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1 | 9f107513 | Anthony Liguori | /*
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2 | 9f107513 | Anthony Liguori | * Virtio 9p backend
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3 | 9f107513 | Anthony Liguori | *
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4 | 9f107513 | Anthony Liguori | * Copyright IBM, Corp. 2010
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5 | 9f107513 | Anthony Liguori | *
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6 | 9f107513 | Anthony Liguori | * Authors:
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7 | 9f107513 | Anthony Liguori | * Anthony Liguori <aliguori@us.ibm.com>
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8 | 9f107513 | Anthony Liguori | *
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9 | 9f107513 | Anthony Liguori | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 9f107513 | Anthony Liguori | * the COPYING file in the top-level directory.
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11 | 9f107513 | Anthony Liguori | *
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12 | 9f107513 | Anthony Liguori | */
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13 | 9f107513 | Anthony Liguori | |
14 | 9f107513 | Anthony Liguori | #include "virtio.h" |
15 | 9f107513 | Anthony Liguori | #include "pc.h" |
16 | 9f107513 | Anthony Liguori | #include "qemu_socket.h" |
17 | 9f107513 | Anthony Liguori | #include "virtio-9p.h" |
18 | 9f107513 | Anthony Liguori | #include "fsdev/qemu-fsdev.h" |
19 | 9f107513 | Anthony Liguori | #include "virtio-9p-debug.h" |
20 | 9f107513 | Anthony Liguori | |
21 | 9f107513 | Anthony Liguori | int debug_9p_pdu;
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22 | 9f107513 | Anthony Liguori | |
23 | fac4f111 | Venkateswararao Jujjuri (JV) | enum {
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24 | fac4f111 | Venkateswararao Jujjuri (JV) | Oread = 0x00,
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25 | fac4f111 | Venkateswararao Jujjuri (JV) | Owrite = 0x01,
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26 | fac4f111 | Venkateswararao Jujjuri (JV) | Ordwr = 0x02,
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27 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexec = 0x03,
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28 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexcl = 0x04,
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29 | fac4f111 | Venkateswararao Jujjuri (JV) | Otrunc = 0x10,
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30 | fac4f111 | Venkateswararao Jujjuri (JV) | Orexec = 0x20,
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31 | fac4f111 | Venkateswararao Jujjuri (JV) | Orclose = 0x40,
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32 | fac4f111 | Venkateswararao Jujjuri (JV) | Oappend = 0x80,
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33 | fac4f111 | Venkateswararao Jujjuri (JV) | }; |
34 | fac4f111 | Venkateswararao Jujjuri (JV) | |
35 | fac4f111 | Venkateswararao Jujjuri (JV) | static int omode_to_uflags(int8_t mode) |
36 | fac4f111 | Venkateswararao Jujjuri (JV) | { |
37 | fac4f111 | Venkateswararao Jujjuri (JV) | int ret = 0; |
38 | fac4f111 | Venkateswararao Jujjuri (JV) | |
39 | fac4f111 | Venkateswararao Jujjuri (JV) | switch (mode & 3) { |
40 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oread:
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41 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
42 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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43 | fac4f111 | Venkateswararao Jujjuri (JV) | case Ordwr:
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44 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDWR; |
45 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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46 | fac4f111 | Venkateswararao Jujjuri (JV) | case Owrite:
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47 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_WRONLY; |
48 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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49 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oexec:
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50 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
51 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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52 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
53 | fac4f111 | Venkateswararao Jujjuri (JV) | |
54 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Otrunc) {
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55 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_TRUNC; |
56 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
57 | fac4f111 | Venkateswararao Jujjuri (JV) | |
58 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oappend) {
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59 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_APPEND; |
60 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
61 | fac4f111 | Venkateswararao Jujjuri (JV) | |
62 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oexcl) {
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63 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_EXCL; |
64 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
65 | fac4f111 | Venkateswararao Jujjuri (JV) | |
66 | fac4f111 | Venkateswararao Jujjuri (JV) | return ret;
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67 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
68 | fac4f111 | Venkateswararao Jujjuri (JV) | |
69 | 758e8e38 | Venkateswararao Jujjuri (JV) | void cred_init(FsCred *credp)
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70 | 131dcb25 | Anthony Liguori | { |
71 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_uid = -1;
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72 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_gid = -1;
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73 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_mode = -1;
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74 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_rdev = -1;
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75 | 131dcb25 | Anthony Liguori | } |
76 | 131dcb25 | Anthony Liguori | |
77 | 758e8e38 | Venkateswararao Jujjuri (JV) | static int v9fs_do_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf) |
78 | 131dcb25 | Anthony Liguori | { |
79 | 758e8e38 | Venkateswararao Jujjuri (JV) | return s->ops->lstat(&s->ctx, path->data, stbuf);
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80 | 131dcb25 | Anthony Liguori | } |
81 | 131dcb25 | Anthony Liguori | |
82 | 131dcb25 | Anthony Liguori | static ssize_t v9fs_do_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
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83 | 131dcb25 | Anthony Liguori | { |
84 | 131dcb25 | Anthony Liguori | ssize_t len; |
85 | 131dcb25 | Anthony Liguori | |
86 | 131dcb25 | Anthony Liguori | buf->data = qemu_malloc(1024);
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87 | 131dcb25 | Anthony Liguori | |
88 | 131dcb25 | Anthony Liguori | len = s->ops->readlink(&s->ctx, path->data, buf->data, 1024 - 1); |
89 | 131dcb25 | Anthony Liguori | if (len > -1) { |
90 | 131dcb25 | Anthony Liguori | buf->size = len; |
91 | 131dcb25 | Anthony Liguori | buf->data[len] = 0;
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92 | 131dcb25 | Anthony Liguori | } |
93 | 131dcb25 | Anthony Liguori | |
94 | 131dcb25 | Anthony Liguori | return len;
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95 | 131dcb25 | Anthony Liguori | } |
96 | 131dcb25 | Anthony Liguori | |
97 | 131dcb25 | Anthony Liguori | static int v9fs_do_close(V9fsState *s, int fd) |
98 | 131dcb25 | Anthony Liguori | { |
99 | 131dcb25 | Anthony Liguori | return s->ops->close(&s->ctx, fd);
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100 | 131dcb25 | Anthony Liguori | } |
101 | 131dcb25 | Anthony Liguori | |
102 | 131dcb25 | Anthony Liguori | static int v9fs_do_closedir(V9fsState *s, DIR *dir) |
103 | 131dcb25 | Anthony Liguori | { |
104 | 131dcb25 | Anthony Liguori | return s->ops->closedir(&s->ctx, dir);
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105 | 131dcb25 | Anthony Liguori | } |
106 | 131dcb25 | Anthony Liguori | |
107 | a6568fe2 | Anthony Liguori | static int v9fs_do_open(V9fsState *s, V9fsString *path, int flags) |
108 | a6568fe2 | Anthony Liguori | { |
109 | a6568fe2 | Anthony Liguori | return s->ops->open(&s->ctx, path->data, flags);
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110 | a6568fe2 | Anthony Liguori | } |
111 | a6568fe2 | Anthony Liguori | |
112 | a6568fe2 | Anthony Liguori | static DIR *v9fs_do_opendir(V9fsState *s, V9fsString *path)
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113 | a6568fe2 | Anthony Liguori | { |
114 | a6568fe2 | Anthony Liguori | return s->ops->opendir(&s->ctx, path->data);
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115 | a6568fe2 | Anthony Liguori | } |
116 | a6568fe2 | Anthony Liguori | |
117 | a9231555 | Anthony Liguori | static void v9fs_do_rewinddir(V9fsState *s, DIR *dir) |
118 | a9231555 | Anthony Liguori | { |
119 | a9231555 | Anthony Liguori | return s->ops->rewinddir(&s->ctx, dir);
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120 | a9231555 | Anthony Liguori | } |
121 | a9231555 | Anthony Liguori | |
122 | a9231555 | Anthony Liguori | static off_t v9fs_do_telldir(V9fsState *s, DIR *dir)
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123 | a9231555 | Anthony Liguori | { |
124 | a9231555 | Anthony Liguori | return s->ops->telldir(&s->ctx, dir);
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125 | a9231555 | Anthony Liguori | } |
126 | a9231555 | Anthony Liguori | |
127 | a9231555 | Anthony Liguori | static struct dirent *v9fs_do_readdir(V9fsState *s, DIR *dir) |
128 | a9231555 | Anthony Liguori | { |
129 | a9231555 | Anthony Liguori | return s->ops->readdir(&s->ctx, dir);
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130 | a9231555 | Anthony Liguori | } |
131 | a9231555 | Anthony Liguori | |
132 | a9231555 | Anthony Liguori | static void v9fs_do_seekdir(V9fsState *s, DIR *dir, off_t off) |
133 | a9231555 | Anthony Liguori | { |
134 | a9231555 | Anthony Liguori | return s->ops->seekdir(&s->ctx, dir, off);
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135 | a9231555 | Anthony Liguori | } |
136 | a9231555 | Anthony Liguori | |
137 | a9231555 | Anthony Liguori | static int v9fs_do_readv(V9fsState *s, int fd, const struct iovec *iov, |
138 | a9231555 | Anthony Liguori | int iovcnt)
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139 | a9231555 | Anthony Liguori | { |
140 | a9231555 | Anthony Liguori | return s->ops->readv(&s->ctx, fd, iov, iovcnt);
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141 | a9231555 | Anthony Liguori | } |
142 | a9231555 | Anthony Liguori | |
143 | a9231555 | Anthony Liguori | static off_t v9fs_do_lseek(V9fsState *s, int fd, off_t offset, int whence) |
144 | a9231555 | Anthony Liguori | { |
145 | a9231555 | Anthony Liguori | return s->ops->lseek(&s->ctx, fd, offset, whence);
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146 | a9231555 | Anthony Liguori | } |
147 | a9231555 | Anthony Liguori | |
148 | 8449360c | Anthony Liguori | static int v9fs_do_writev(V9fsState *s, int fd, const struct iovec *iov, |
149 | 8449360c | Anthony Liguori | int iovcnt)
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150 | 8449360c | Anthony Liguori | { |
151 | 8449360c | Anthony Liguori | return s->ops->writev(&s->ctx, fd, iov, iovcnt);
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152 | 8449360c | Anthony Liguori | } |
153 | 8449360c | Anthony Liguori | |
154 | c494dd6f | Anthony Liguori | static int v9fs_do_chmod(V9fsState *s, V9fsString *path, mode_t mode) |
155 | c494dd6f | Anthony Liguori | { |
156 | e95ead32 | Venkateswararao Jujjuri (JV) | FsCred cred; |
157 | e95ead32 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
158 | e95ead32 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
159 | e95ead32 | Venkateswararao Jujjuri (JV) | return s->ops->chmod(&s->ctx, path->data, &cred);
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160 | c494dd6f | Anthony Liguori | } |
161 | c494dd6f | Anthony Liguori | |
162 | 5268cecc | M. Mohan Kumar | static int v9fs_do_mknod(V9fsState *s, char *name, |
163 | 5268cecc | M. Mohan Kumar | mode_t mode, dev_t dev, uid_t uid, gid_t gid) |
164 | c494dd6f | Anthony Liguori | { |
165 | 1c293312 | Venkateswararao Jujjuri (JV) | FsCred cred; |
166 | 1c293312 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
167 | 5268cecc | M. Mohan Kumar | cred.fc_uid = uid; |
168 | 5268cecc | M. Mohan Kumar | cred.fc_gid = gid; |
169 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
170 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_rdev = dev; |
171 | 5268cecc | M. Mohan Kumar | return s->ops->mknod(&s->ctx, name, &cred);
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172 | c494dd6f | Anthony Liguori | } |
173 | c494dd6f | Anthony Liguori | |
174 | b67592ea | M. Mohan Kumar | static int v9fs_do_mkdir(V9fsState *s, char *name, mode_t mode, |
175 | b67592ea | M. Mohan Kumar | uid_t uid, gid_t gid) |
176 | c494dd6f | Anthony Liguori | { |
177 | 00ec5c37 | Venkateswararao Jujjuri (JV) | FsCred cred; |
178 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
179 | 00ec5c37 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
180 | b67592ea | M. Mohan Kumar | cred.fc_uid = uid; |
181 | b67592ea | M. Mohan Kumar | cred.fc_gid = gid; |
182 | b67592ea | M. Mohan Kumar | cred.fc_mode = mode; |
183 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
184 | b67592ea | M. Mohan Kumar | return s->ops->mkdir(&s->ctx, name, &cred);
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185 | c494dd6f | Anthony Liguori | } |
186 | c494dd6f | Anthony Liguori | |
187 | c494dd6f | Anthony Liguori | static int v9fs_do_fstat(V9fsState *s, int fd, struct stat *stbuf) |
188 | c494dd6f | Anthony Liguori | { |
189 | c494dd6f | Anthony Liguori | return s->ops->fstat(&s->ctx, fd, stbuf);
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190 | c494dd6f | Anthony Liguori | } |
191 | c494dd6f | Anthony Liguori | |
192 | c1568af5 | Venkateswararao Jujjuri (JV) | static int v9fs_do_open2(V9fsState *s, char *fullname, uid_t uid, gid_t gid, |
193 | c1568af5 | Venkateswararao Jujjuri (JV) | int flags, int mode) |
194 | c494dd6f | Anthony Liguori | { |
195 | 4750a96f | Venkateswararao Jujjuri (JV) | FsCred cred; |
196 | 4750a96f | Venkateswararao Jujjuri (JV) | |
197 | 4750a96f | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
198 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
199 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
200 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode & 07777;
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201 | c1568af5 | Venkateswararao Jujjuri (JV) | flags = flags; |
202 | 4750a96f | Venkateswararao Jujjuri (JV) | |
203 | c1568af5 | Venkateswararao Jujjuri (JV) | return s->ops->open2(&s->ctx, fullname, flags, &cred);
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204 | c494dd6f | Anthony Liguori | } |
205 | c494dd6f | Anthony Liguori | |
206 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static int v9fs_do_symlink(V9fsState *s, V9fsFidState *fidp, |
207 | 08c60fc9 | Venkateswararao Jujjuri (JV) | const char *oldpath, const char *newpath, gid_t gid) |
208 | c494dd6f | Anthony Liguori | { |
209 | 879c2813 | Venkateswararao Jujjuri (JV) | FsCred cred; |
210 | 879c2813 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
211 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_uid = fidp->uid; |
212 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
213 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_mode = 0777;
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214 | 879c2813 | Venkateswararao Jujjuri (JV) | |
215 | 08c60fc9 | Venkateswararao Jujjuri (JV) | return s->ops->symlink(&s->ctx, oldpath, newpath, &cred);
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216 | c494dd6f | Anthony Liguori | } |
217 | c494dd6f | Anthony Liguori | |
218 | c494dd6f | Anthony Liguori | static int v9fs_do_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath) |
219 | c494dd6f | Anthony Liguori | { |
220 | c494dd6f | Anthony Liguori | return s->ops->link(&s->ctx, oldpath->data, newpath->data);
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221 | c494dd6f | Anthony Liguori | } |
222 | c494dd6f | Anthony Liguori | |
223 | 8cf89e00 | Anthony Liguori | static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size) |
224 | 8cf89e00 | Anthony Liguori | { |
225 | 8cf89e00 | Anthony Liguori | return s->ops->truncate(&s->ctx, path->data, size);
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226 | 8cf89e00 | Anthony Liguori | } |
227 | 8cf89e00 | Anthony Liguori | |
228 | 8cf89e00 | Anthony Liguori | static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath, |
229 | 8cf89e00 | Anthony Liguori | V9fsString *newpath) |
230 | 8cf89e00 | Anthony Liguori | { |
231 | 8cf89e00 | Anthony Liguori | return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
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232 | 8cf89e00 | Anthony Liguori | } |
233 | 8cf89e00 | Anthony Liguori | |
234 | 8cf89e00 | Anthony Liguori | static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid) |
235 | 8cf89e00 | Anthony Liguori | { |
236 | f7613bee | Venkateswararao Jujjuri (JV) | FsCred cred; |
237 | f7613bee | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
238 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
239 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
240 | f7613bee | Venkateswararao Jujjuri (JV) | |
241 | f7613bee | Venkateswararao Jujjuri (JV) | return s->ops->chown(&s->ctx, path->data, &cred);
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242 | 8cf89e00 | Anthony Liguori | } |
243 | 8cf89e00 | Anthony Liguori | |
244 | 8fc39ae4 | Sripathi Kodi | static int v9fs_do_utimensat(V9fsState *s, V9fsString *path, |
245 | 8fc39ae4 | Sripathi Kodi | const struct timespec times[2]) |
246 | 8cf89e00 | Anthony Liguori | { |
247 | 8fc39ae4 | Sripathi Kodi | return s->ops->utimensat(&s->ctx, path->data, times);
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248 | 8cf89e00 | Anthony Liguori | } |
249 | 8cf89e00 | Anthony Liguori | |
250 | 5bae1900 | Anthony Liguori | static int v9fs_do_remove(V9fsState *s, V9fsString *path) |
251 | 5bae1900 | Anthony Liguori | { |
252 | 5bae1900 | Anthony Liguori | return s->ops->remove(&s->ctx, path->data);
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253 | 5bae1900 | Anthony Liguori | } |
254 | 5bae1900 | Anthony Liguori | |
255 | 8cf89e00 | Anthony Liguori | static int v9fs_do_fsync(V9fsState *s, int fd) |
256 | 8cf89e00 | Anthony Liguori | { |
257 | 8cf89e00 | Anthony Liguori | return s->ops->fsync(&s->ctx, fd);
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258 | 8cf89e00 | Anthony Liguori | } |
259 | 8cf89e00 | Anthony Liguori | |
260 | 5e94c103 | M. Mohan Kumar | static int v9fs_do_statfs(V9fsState *s, V9fsString *path, struct statfs *stbuf) |
261 | 5e94c103 | M. Mohan Kumar | { |
262 | 5e94c103 | M. Mohan Kumar | return s->ops->statfs(&s->ctx, path->data, stbuf);
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263 | 5e94c103 | M. Mohan Kumar | } |
264 | 5e94c103 | M. Mohan Kumar | |
265 | fa32ef88 | Aneesh Kumar K.V | static ssize_t v9fs_do_lgetxattr(V9fsState *s, V9fsString *path,
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266 | fa32ef88 | Aneesh Kumar K.V | V9fsString *xattr_name, |
267 | fa32ef88 | Aneesh Kumar K.V | void *value, size_t size)
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268 | fa32ef88 | Aneesh Kumar K.V | { |
269 | fa32ef88 | Aneesh Kumar K.V | return s->ops->lgetxattr(&s->ctx, path->data,
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270 | fa32ef88 | Aneesh Kumar K.V | xattr_name->data, value, size); |
271 | fa32ef88 | Aneesh Kumar K.V | } |
272 | fa32ef88 | Aneesh Kumar K.V | |
273 | fa32ef88 | Aneesh Kumar K.V | static ssize_t v9fs_do_llistxattr(V9fsState *s, V9fsString *path,
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274 | fa32ef88 | Aneesh Kumar K.V | void *value, size_t size)
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275 | fa32ef88 | Aneesh Kumar K.V | { |
276 | fa32ef88 | Aneesh Kumar K.V | return s->ops->llistxattr(&s->ctx, path->data,
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277 | fa32ef88 | Aneesh Kumar K.V | value, size); |
278 | fa32ef88 | Aneesh Kumar K.V | } |
279 | fa32ef88 | Aneesh Kumar K.V | |
280 | 10b468bd | Aneesh Kumar K.V | static int v9fs_do_lsetxattr(V9fsState *s, V9fsString *path, |
281 | 10b468bd | Aneesh Kumar K.V | V9fsString *xattr_name, |
282 | 10b468bd | Aneesh Kumar K.V | void *value, size_t size, int flags) |
283 | 10b468bd | Aneesh Kumar K.V | { |
284 | 10b468bd | Aneesh Kumar K.V | return s->ops->lsetxattr(&s->ctx, path->data,
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285 | 10b468bd | Aneesh Kumar K.V | xattr_name->data, value, size, flags); |
286 | 10b468bd | Aneesh Kumar K.V | } |
287 | 10b468bd | Aneesh Kumar K.V | |
288 | 9ed3ef26 | Aneesh Kumar K.V | static int v9fs_do_lremovexattr(V9fsState *s, V9fsString *path, |
289 | 9ed3ef26 | Aneesh Kumar K.V | V9fsString *xattr_name) |
290 | 9ed3ef26 | Aneesh Kumar K.V | { |
291 | 9ed3ef26 | Aneesh Kumar K.V | return s->ops->lremovexattr(&s->ctx, path->data,
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292 | 9ed3ef26 | Aneesh Kumar K.V | xattr_name->data); |
293 | 9ed3ef26 | Aneesh Kumar K.V | } |
294 | 9ed3ef26 | Aneesh Kumar K.V | |
295 | 9ed3ef26 | Aneesh Kumar K.V | |
296 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
297 | a03f7874 | Anthony Liguori | { |
298 | a03f7874 | Anthony Liguori | str->data = NULL;
|
299 | a03f7874 | Anthony Liguori | str->size = 0;
|
300 | a03f7874 | Anthony Liguori | } |
301 | a03f7874 | Anthony Liguori | |
302 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
303 | a03f7874 | Anthony Liguori | { |
304 | a03f7874 | Anthony Liguori | qemu_free(str->data); |
305 | a03f7874 | Anthony Liguori | str->data = NULL;
|
306 | a03f7874 | Anthony Liguori | str->size = 0;
|
307 | a03f7874 | Anthony Liguori | } |
308 | a03f7874 | Anthony Liguori | |
309 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
310 | a03f7874 | Anthony Liguori | { |
311 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
312 | a03f7874 | Anthony Liguori | } |
313 | a03f7874 | Anthony Liguori | |
314 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
315 | a03f7874 | Anthony Liguori | { |
316 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
317 | a03f7874 | Anthony Liguori | |
318 | a03f7874 | Anthony Liguori | switch (type) {
|
319 | a03f7874 | Anthony Liguori | case 'u': { |
320 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
321 | a03f7874 | Anthony Liguori | |
322 | a03f7874 | Anthony Liguori | do {
|
323 | a03f7874 | Anthony Liguori | ret++; |
324 | a03f7874 | Anthony Liguori | num = num/10;
|
325 | a03f7874 | Anthony Liguori | } while (num);
|
326 | a03f7874 | Anthony Liguori | break;
|
327 | a03f7874 | Anthony Liguori | } |
328 | a03f7874 | Anthony Liguori | default:
|
329 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
|
330 | a03f7874 | Anthony Liguori | return -1; |
331 | a03f7874 | Anthony Liguori | } |
332 | a03f7874 | Anthony Liguori | |
333 | a03f7874 | Anthony Liguori | return ret;
|
334 | a03f7874 | Anthony Liguori | } |
335 | a03f7874 | Anthony Liguori | |
336 | c9ba47dc | Stefan Weil | static int GCC_FMT_ATTR(2, 0) |
337 | c9ba47dc | Stefan Weil | v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
338 | a03f7874 | Anthony Liguori | { |
339 | a03f7874 | Anthony Liguori | va_list ap2; |
340 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
341 | a03f7874 | Anthony Liguori | int len = 0; |
342 | a03f7874 | Anthony Liguori | int nr_args = 0; |
343 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
|
344 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
345 | a03f7874 | Anthony Liguori | |
346 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
|
347 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
348 | a03f7874 | Anthony Liguori | nr_args++; |
349 | a03f7874 | Anthony Liguori | iter++; |
350 | a03f7874 | Anthony Liguori | } |
351 | a03f7874 | Anthony Liguori | |
352 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
|
353 | a03f7874 | Anthony Liguori | |
354 | a03f7874 | Anthony Liguori | if (!nr_args) {
|
355 | a03f7874 | Anthony Liguori | goto alloc_print;
|
356 | a03f7874 | Anthony Liguori | } |
357 | a03f7874 | Anthony Liguori | |
358 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
359 | a03f7874 | Anthony Liguori | |
360 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
|
361 | a03f7874 | Anthony Liguori | |
362 | a03f7874 | Anthony Liguori | /* Now parse the format string */
|
363 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
364 | a03f7874 | Anthony Liguori | iter++; |
365 | a03f7874 | Anthony Liguori | switch (*iter) {
|
366 | a03f7874 | Anthony Liguori | case 'u': |
367 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
368 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
369 | a03f7874 | Anthony Liguori | break;
|
370 | a03f7874 | Anthony Liguori | case 's': |
371 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
|
372 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
373 | a03f7874 | Anthony Liguori | break;
|
374 | a03f7874 | Anthony Liguori | case 'c': |
375 | a03f7874 | Anthony Liguori | len += 1;
|
376 | a03f7874 | Anthony Liguori | break;
|
377 | a03f7874 | Anthony Liguori | default:
|
378 | a03f7874 | Anthony Liguori | fprintf(stderr, |
379 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
|
380 | a03f7874 | Anthony Liguori | return -1; |
381 | a03f7874 | Anthony Liguori | } |
382 | a03f7874 | Anthony Liguori | iter++; |
383 | a03f7874 | Anthony Liguori | } |
384 | a03f7874 | Anthony Liguori | |
385 | a03f7874 | Anthony Liguori | alloc_print:
|
386 | a03f7874 | Anthony Liguori | *strp = qemu_malloc((len + 1) * sizeof(**strp)); |
387 | a03f7874 | Anthony Liguori | |
388 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
|
389 | a03f7874 | Anthony Liguori | } |
390 | a03f7874 | Anthony Liguori | |
391 | c9ba47dc | Stefan Weil | static void GCC_FMT_ATTR(2, 3) |
392 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
393 | a03f7874 | Anthony Liguori | { |
394 | a03f7874 | Anthony Liguori | va_list ap; |
395 | a03f7874 | Anthony Liguori | int err;
|
396 | a03f7874 | Anthony Liguori | |
397 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
398 | a03f7874 | Anthony Liguori | |
399 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
400 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
401 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
|
402 | a03f7874 | Anthony Liguori | va_end(ap); |
403 | a03f7874 | Anthony Liguori | |
404 | a03f7874 | Anthony Liguori | str->size = err; |
405 | a03f7874 | Anthony Liguori | } |
406 | a03f7874 | Anthony Liguori | |
407 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
408 | a03f7874 | Anthony Liguori | { |
409 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
410 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
|
411 | a03f7874 | Anthony Liguori | } |
412 | a03f7874 | Anthony Liguori | |
413 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
|
414 | a03f7874 | Anthony Liguori | { |
415 | a03f7874 | Anthony Liguori | return str->size;
|
416 | a03f7874 | Anthony Liguori | } |
417 | a03f7874 | Anthony Liguori | |
418 | 286d5652 | Anthony Liguori | static V9fsFidState *lookup_fid(V9fsState *s, int32_t fid)
|
419 | 286d5652 | Anthony Liguori | { |
420 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
421 | 286d5652 | Anthony Liguori | |
422 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
|
423 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
|
424 | 286d5652 | Anthony Liguori | return f;
|
425 | 286d5652 | Anthony Liguori | } |
426 | 286d5652 | Anthony Liguori | } |
427 | 286d5652 | Anthony Liguori | |
428 | 286d5652 | Anthony Liguori | return NULL; |
429 | 286d5652 | Anthony Liguori | } |
430 | 286d5652 | Anthony Liguori | |
431 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
|
432 | 286d5652 | Anthony Liguori | { |
433 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
434 | 286d5652 | Anthony Liguori | |
435 | 286d5652 | Anthony Liguori | f = lookup_fid(s, fid); |
436 | 286d5652 | Anthony Liguori | if (f) {
|
437 | 286d5652 | Anthony Liguori | return NULL; |
438 | 286d5652 | Anthony Liguori | } |
439 | 286d5652 | Anthony Liguori | |
440 | 286d5652 | Anthony Liguori | f = qemu_mallocz(sizeof(V9fsFidState));
|
441 | 286d5652 | Anthony Liguori | |
442 | 286d5652 | Anthony Liguori | f->fid = fid; |
443 | d62dbb51 | Aneesh Kumar K.V | f->fid_type = P9_FID_NONE; |
444 | 286d5652 | Anthony Liguori | |
445 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
446 | 286d5652 | Anthony Liguori | s->fid_list = f; |
447 | 286d5652 | Anthony Liguori | |
448 | 286d5652 | Anthony Liguori | return f;
|
449 | 286d5652 | Anthony Liguori | } |
450 | 286d5652 | Anthony Liguori | |
451 | 10b468bd | Aneesh Kumar K.V | static int v9fs_xattr_fid_clunk(V9fsState *s, V9fsFidState *fidp) |
452 | 10b468bd | Aneesh Kumar K.V | { |
453 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
454 | 10b468bd | Aneesh Kumar K.V | |
455 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.copied_len == -1) { |
456 | 10b468bd | Aneesh Kumar K.V | /* getxattr/listxattr fid */
|
457 | 10b468bd | Aneesh Kumar K.V | goto free_value;
|
458 | 10b468bd | Aneesh Kumar K.V | } |
459 | 10b468bd | Aneesh Kumar K.V | /*
|
460 | 10b468bd | Aneesh Kumar K.V | * if this is fid for setxattr. clunk should
|
461 | 10b468bd | Aneesh Kumar K.V | * result in setxattr localcall
|
462 | 10b468bd | Aneesh Kumar K.V | */
|
463 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.len != fidp->fs.xattr.copied_len) {
|
464 | 10b468bd | Aneesh Kumar K.V | /* clunk after partial write */
|
465 | 10b468bd | Aneesh Kumar K.V | retval = -EINVAL; |
466 | 10b468bd | Aneesh Kumar K.V | goto free_out;
|
467 | 10b468bd | Aneesh Kumar K.V | } |
468 | 9ed3ef26 | Aneesh Kumar K.V | if (fidp->fs.xattr.len) {
|
469 | 9ed3ef26 | Aneesh Kumar K.V | retval = v9fs_do_lsetxattr(s, &fidp->path, &fidp->fs.xattr.name, |
470 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.value, |
471 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.len, |
472 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.flags); |
473 | 9ed3ef26 | Aneesh Kumar K.V | } else {
|
474 | 9ed3ef26 | Aneesh Kumar K.V | retval = v9fs_do_lremovexattr(s, &fidp->path, &fidp->fs.xattr.name); |
475 | 9ed3ef26 | Aneesh Kumar K.V | } |
476 | 10b468bd | Aneesh Kumar K.V | free_out:
|
477 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&fidp->fs.xattr.name); |
478 | 10b468bd | Aneesh Kumar K.V | free_value:
|
479 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.value) {
|
480 | 10b468bd | Aneesh Kumar K.V | qemu_free(fidp->fs.xattr.value); |
481 | 10b468bd | Aneesh Kumar K.V | } |
482 | 10b468bd | Aneesh Kumar K.V | return retval;
|
483 | 10b468bd | Aneesh Kumar K.V | } |
484 | 10b468bd | Aneesh Kumar K.V | |
485 | 286d5652 | Anthony Liguori | static int free_fid(V9fsState *s, int32_t fid) |
486 | 286d5652 | Anthony Liguori | { |
487 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
488 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
489 | 286d5652 | Anthony Liguori | |
490 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
491 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
492 | 286d5652 | Anthony Liguori | break;
|
493 | 286d5652 | Anthony Liguori | } |
494 | 286d5652 | Anthony Liguori | } |
495 | 286d5652 | Anthony Liguori | |
496 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
497 | 286d5652 | Anthony Liguori | return -ENOENT;
|
498 | 286d5652 | Anthony Liguori | } |
499 | 286d5652 | Anthony Liguori | |
500 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
501 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
502 | 286d5652 | Anthony Liguori | |
503 | d62dbb51 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
504 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_close(s, fidp->fs.fd); |
505 | d62dbb51 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_DIR) { |
506 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_closedir(s, fidp->fs.dir); |
507 | d62dbb51 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
508 | 10b468bd | Aneesh Kumar K.V | retval = v9fs_xattr_fid_clunk(s, fidp); |
509 | 286d5652 | Anthony Liguori | } |
510 | 286d5652 | Anthony Liguori | v9fs_string_free(&fidp->path); |
511 | 286d5652 | Anthony Liguori | qemu_free(fidp); |
512 | 286d5652 | Anthony Liguori | |
513 | 10b468bd | Aneesh Kumar K.V | return retval;
|
514 | 286d5652 | Anthony Liguori | } |
515 | 286d5652 | Anthony Liguori | |
516 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
517 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
518 | 286d5652 | Anthony Liguori | |
519 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
520 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
521 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
522 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
523 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
524 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
525 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
526 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
527 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
528 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
529 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
530 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
531 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
532 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
533 | 286d5652 | Anthony Liguori | |
534 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
535 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
536 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
537 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
538 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
539 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
540 | 286d5652 | Anthony Liguori | |
541 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
542 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
543 | 286d5652 | Anthony Liguori | { |
544 | 286d5652 | Anthony Liguori | size_t size; |
545 | 286d5652 | Anthony Liguori | |
546 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
547 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
548 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
549 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
550 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
551 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
552 | 286d5652 | Anthony Liguori | } |
553 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
554 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
555 | 286d5652 | Anthony Liguori | } |
556 | 286d5652 | Anthony Liguori | } |
557 | 286d5652 | Anthony Liguori | |
558 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
559 | 286d5652 | Anthony Liguori | { |
560 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
561 | 286d5652 | Anthony Liguori | int err;
|
562 | 286d5652 | Anthony Liguori | |
563 | 286d5652 | Anthony Liguori | err = v9fs_do_lstat(s, &fidp->path, &stbuf); |
564 | 286d5652 | Anthony Liguori | if (err) {
|
565 | 286d5652 | Anthony Liguori | return err;
|
566 | 286d5652 | Anthony Liguori | } |
567 | 286d5652 | Anthony Liguori | |
568 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
569 | 286d5652 | Anthony Liguori | return 0; |
570 | 286d5652 | Anthony Liguori | } |
571 | 286d5652 | Anthony Liguori | |
572 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
573 | 9f107513 | Anthony Liguori | { |
574 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
575 | 9f107513 | Anthony Liguori | |
576 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
577 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
578 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
579 | 9f107513 | Anthony Liguori | } |
580 | 9f107513 | Anthony Liguori | return pdu;
|
581 | 9f107513 | Anthony Liguori | } |
582 | 9f107513 | Anthony Liguori | |
583 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
584 | 9f107513 | Anthony Liguori | { |
585 | 9f107513 | Anthony Liguori | if (pdu) {
|
586 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
587 | 9f107513 | Anthony Liguori | } |
588 | 9f107513 | Anthony Liguori | } |
589 | 9f107513 | Anthony Liguori | |
590 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
591 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
592 | 9f107513 | Anthony Liguori | { |
593 | 9f107513 | Anthony Liguori | int i = 0; |
594 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
595 | 9f107513 | Anthony Liguori | |
596 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
597 | 9f107513 | Anthony Liguori | size_t len; |
598 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
599 | 9f107513 | Anthony Liguori | /* skip this sg */
|
600 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
601 | 9f107513 | Anthony Liguori | continue;
|
602 | 9f107513 | Anthony Liguori | } else {
|
603 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
604 | 9f107513 | Anthony Liguori | if (pack) {
|
605 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
606 | 9f107513 | Anthony Liguori | } else {
|
607 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
608 | 9f107513 | Anthony Liguori | } |
609 | 9f107513 | Anthony Liguori | size -= len; |
610 | 9f107513 | Anthony Liguori | copied += len; |
611 | 9f107513 | Anthony Liguori | addr += len; |
612 | 9f107513 | Anthony Liguori | if (size) {
|
613 | 9f107513 | Anthony Liguori | offset = 0;
|
614 | 9f107513 | Anthony Liguori | continue;
|
615 | 9f107513 | Anthony Liguori | } |
616 | 9f107513 | Anthony Liguori | } |
617 | 9f107513 | Anthony Liguori | } |
618 | 9f107513 | Anthony Liguori | |
619 | 9f107513 | Anthony Liguori | return copied;
|
620 | 9f107513 | Anthony Liguori | } |
621 | 9f107513 | Anthony Liguori | |
622 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
623 | 405a549a | Anthony Liguori | { |
624 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
625 | 405a549a | Anthony Liguori | offset, size, 0);
|
626 | 405a549a | Anthony Liguori | } |
627 | 405a549a | Anthony Liguori | |
628 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
629 | 405a549a | Anthony Liguori | size_t size) |
630 | 405a549a | Anthony Liguori | { |
631 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
632 | 405a549a | Anthony Liguori | offset, size, 1);
|
633 | 405a549a | Anthony Liguori | } |
634 | 405a549a | Anthony Liguori | |
635 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
636 | 405a549a | Anthony Liguori | { |
637 | 405a549a | Anthony Liguori | size_t pos = 0;
|
638 | 405a549a | Anthony Liguori | int i, j;
|
639 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
640 | 405a549a | Anthony Liguori | unsigned int num; |
641 | 405a549a | Anthony Liguori | |
642 | 405a549a | Anthony Liguori | if (rx) {
|
643 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
644 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
645 | 405a549a | Anthony Liguori | } else {
|
646 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
647 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
648 | 405a549a | Anthony Liguori | } |
649 | 405a549a | Anthony Liguori | |
650 | 405a549a | Anthony Liguori | j = 0;
|
651 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
652 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
653 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
654 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
655 | 405a549a | Anthony Liguori | j++; |
656 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
657 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
658 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
659 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
660 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
661 | 405a549a | Anthony Liguori | j++; |
662 | 405a549a | Anthony Liguori | } |
663 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
664 | 405a549a | Anthony Liguori | } |
665 | 405a549a | Anthony Liguori | |
666 | 405a549a | Anthony Liguori | return j;
|
667 | 405a549a | Anthony Liguori | } |
668 | 405a549a | Anthony Liguori | |
669 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
670 | 405a549a | Anthony Liguori | { |
671 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
672 | 405a549a | Anthony Liguori | va_list ap; |
673 | 405a549a | Anthony Liguori | int i;
|
674 | 405a549a | Anthony Liguori | |
675 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
676 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
677 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
678 | 405a549a | Anthony Liguori | case 'b': { |
679 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
680 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
681 | 405a549a | Anthony Liguori | break;
|
682 | 405a549a | Anthony Liguori | } |
683 | 405a549a | Anthony Liguori | case 'w': { |
684 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
685 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
686 | 405a549a | Anthony Liguori | val = le16_to_cpupu(valp); |
687 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
688 | 405a549a | Anthony Liguori | *valp = val; |
689 | 405a549a | Anthony Liguori | break;
|
690 | 405a549a | Anthony Liguori | } |
691 | 405a549a | Anthony Liguori | case 'd': { |
692 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
693 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
694 | 405a549a | Anthony Liguori | val = le32_to_cpupu(valp); |
695 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
696 | 405a549a | Anthony Liguori | *valp = val; |
697 | 405a549a | Anthony Liguori | break;
|
698 | 405a549a | Anthony Liguori | } |
699 | 405a549a | Anthony Liguori | case 'q': { |
700 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
701 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
702 | 405a549a | Anthony Liguori | val = le64_to_cpup(valp); |
703 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
704 | 405a549a | Anthony Liguori | *valp = val; |
705 | 405a549a | Anthony Liguori | break;
|
706 | 405a549a | Anthony Liguori | } |
707 | 405a549a | Anthony Liguori | case 'v': { |
708 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
709 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
710 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
711 | 405a549a | Anthony Liguori | break;
|
712 | 405a549a | Anthony Liguori | } |
713 | 405a549a | Anthony Liguori | case 's': { |
714 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
715 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
716 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
717 | 405a549a | Anthony Liguori | str->data = qemu_malloc(str->size + 1);
|
718 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
719 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
720 | 405a549a | Anthony Liguori | break;
|
721 | 405a549a | Anthony Liguori | } |
722 | 405a549a | Anthony Liguori | case 'Q': { |
723 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
724 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
725 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
726 | 405a549a | Anthony Liguori | break;
|
727 | 405a549a | Anthony Liguori | } |
728 | 405a549a | Anthony Liguori | case 'S': { |
729 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
730 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
731 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
732 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
733 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
734 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
735 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
736 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
737 | 405a549a | Anthony Liguori | &statp->n_muid); |
738 | 405a549a | Anthony Liguori | break;
|
739 | 405a549a | Anthony Liguori | } |
740 | c79ce737 | Sripathi Kodi | case 'I': { |
741 | c79ce737 | Sripathi Kodi | V9fsIattr *iattr = va_arg(ap, V9fsIattr *); |
742 | c79ce737 | Sripathi Kodi | offset += pdu_unmarshal(pdu, offset, "ddddqqqqq",
|
743 | c79ce737 | Sripathi Kodi | &iattr->valid, &iattr->mode, |
744 | c79ce737 | Sripathi Kodi | &iattr->uid, &iattr->gid, &iattr->size, |
745 | c79ce737 | Sripathi Kodi | &iattr->atime_sec, &iattr->atime_nsec, |
746 | c79ce737 | Sripathi Kodi | &iattr->mtime_sec, &iattr->mtime_nsec); |
747 | c79ce737 | Sripathi Kodi | break;
|
748 | c79ce737 | Sripathi Kodi | } |
749 | 405a549a | Anthony Liguori | default:
|
750 | 405a549a | Anthony Liguori | break;
|
751 | 405a549a | Anthony Liguori | } |
752 | 405a549a | Anthony Liguori | } |
753 | 405a549a | Anthony Liguori | |
754 | 405a549a | Anthony Liguori | va_end(ap); |
755 | 405a549a | Anthony Liguori | |
756 | 405a549a | Anthony Liguori | return offset - old_offset;
|
757 | 405a549a | Anthony Liguori | } |
758 | 405a549a | Anthony Liguori | |
759 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
760 | 405a549a | Anthony Liguori | { |
761 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
762 | 405a549a | Anthony Liguori | va_list ap; |
763 | 405a549a | Anthony Liguori | int i;
|
764 | 405a549a | Anthony Liguori | |
765 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
766 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
767 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
768 | 405a549a | Anthony Liguori | case 'b': { |
769 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
770 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
771 | 405a549a | Anthony Liguori | break;
|
772 | 405a549a | Anthony Liguori | } |
773 | 405a549a | Anthony Liguori | case 'w': { |
774 | 405a549a | Anthony Liguori | uint16_t val; |
775 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
776 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
777 | 405a549a | Anthony Liguori | break;
|
778 | 405a549a | Anthony Liguori | } |
779 | 405a549a | Anthony Liguori | case 'd': { |
780 | 405a549a | Anthony Liguori | uint32_t val; |
781 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
782 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
783 | 405a549a | Anthony Liguori | break;
|
784 | 405a549a | Anthony Liguori | } |
785 | 405a549a | Anthony Liguori | case 'q': { |
786 | 405a549a | Anthony Liguori | uint64_t val; |
787 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
788 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
789 | 405a549a | Anthony Liguori | break;
|
790 | 405a549a | Anthony Liguori | } |
791 | 405a549a | Anthony Liguori | case 'v': { |
792 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
793 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
794 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
795 | 405a549a | Anthony Liguori | break;
|
796 | 405a549a | Anthony Liguori | } |
797 | 405a549a | Anthony Liguori | case 's': { |
798 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
799 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
800 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
801 | 405a549a | Anthony Liguori | break;
|
802 | 405a549a | Anthony Liguori | } |
803 | 405a549a | Anthony Liguori | case 'Q': { |
804 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
805 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
806 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
807 | 405a549a | Anthony Liguori | break;
|
808 | 405a549a | Anthony Liguori | } |
809 | 405a549a | Anthony Liguori | case 'S': { |
810 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
811 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
812 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
813 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
814 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
815 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
816 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
817 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
818 | 405a549a | Anthony Liguori | break;
|
819 | 405a549a | Anthony Liguori | } |
820 | 00ede4c2 | Sripathi Kodi | case 'A': { |
821 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *statp = va_arg(ap, V9fsStatDotl *); |
822 | 00ede4c2 | Sripathi Kodi | offset += pdu_marshal(pdu, offset, "qQdddqqqqqqqqqqqqqqq",
|
823 | 00ede4c2 | Sripathi Kodi | statp->st_result_mask, |
824 | 00ede4c2 | Sripathi Kodi | &statp->qid, statp->st_mode, |
825 | 00ede4c2 | Sripathi Kodi | statp->st_uid, statp->st_gid, |
826 | 00ede4c2 | Sripathi Kodi | statp->st_nlink, statp->st_rdev, |
827 | 00ede4c2 | Sripathi Kodi | statp->st_size, statp->st_blksize, statp->st_blocks, |
828 | 00ede4c2 | Sripathi Kodi | statp->st_atime_sec, statp->st_atime_nsec, |
829 | 00ede4c2 | Sripathi Kodi | statp->st_mtime_sec, statp->st_mtime_nsec, |
830 | 00ede4c2 | Sripathi Kodi | statp->st_ctime_sec, statp->st_ctime_nsec, |
831 | 00ede4c2 | Sripathi Kodi | statp->st_btime_sec, statp->st_btime_nsec, |
832 | 00ede4c2 | Sripathi Kodi | statp->st_gen, statp->st_data_version); |
833 | 00ede4c2 | Sripathi Kodi | break;
|
834 | 00ede4c2 | Sripathi Kodi | } |
835 | 405a549a | Anthony Liguori | default:
|
836 | 405a549a | Anthony Liguori | break;
|
837 | 405a549a | Anthony Liguori | } |
838 | 405a549a | Anthony Liguori | } |
839 | 405a549a | Anthony Liguori | va_end(ap); |
840 | 405a549a | Anthony Liguori | |
841 | 405a549a | Anthony Liguori | return offset - old_offset;
|
842 | 405a549a | Anthony Liguori | } |
843 | 405a549a | Anthony Liguori | |
844 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
845 | 405a549a | Anthony Liguori | { |
846 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
847 | 405a549a | Anthony Liguori | |
848 | 405a549a | Anthony Liguori | if (len < 0) { |
849 | 405a549a | Anthony Liguori | int err = -len;
|
850 | 8f4d1ca5 | Arun R Bharadwaj | len = 7;
|
851 | 405a549a | Anthony Liguori | |
852 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version != V9FS_PROTO_2000L) {
|
853 | 8f4d1ca5 | Arun R Bharadwaj | V9fsString str; |
854 | 8f4d1ca5 | Arun R Bharadwaj | |
855 | 8f4d1ca5 | Arun R Bharadwaj | str.data = strerror(err); |
856 | 8f4d1ca5 | Arun R Bharadwaj | str.size = strlen(str.data); |
857 | 8f4d1ca5 | Arun R Bharadwaj | |
858 | 8f4d1ca5 | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "s", &str);
|
859 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RERROR; |
860 | 8f4d1ca5 | Arun R Bharadwaj | } |
861 | 405a549a | Anthony Liguori | |
862 | cf03eb2c | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "d", err);
|
863 | 405a549a | Anthony Liguori | |
864 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version == V9FS_PROTO_2000L) {
|
865 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RLERROR; |
866 | 8f4d1ca5 | Arun R Bharadwaj | } |
867 | 405a549a | Anthony Liguori | } |
868 | 405a549a | Anthony Liguori | |
869 | 405a549a | Anthony Liguori | /* fill out the header */
|
870 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
871 | 405a549a | Anthony Liguori | |
872 | 405a549a | Anthony Liguori | /* keep these in sync */
|
873 | 405a549a | Anthony Liguori | pdu->size = len; |
874 | 405a549a | Anthony Liguori | pdu->id = id; |
875 | 405a549a | Anthony Liguori | |
876 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
877 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
878 | 405a549a | Anthony Liguori | |
879 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
880 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
881 | 405a549a | Anthony Liguori | |
882 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
883 | 405a549a | Anthony Liguori | } |
884 | 405a549a | Anthony Liguori | |
885 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
886 | bb9e3216 | Anthony Liguori | { |
887 | bb9e3216 | Anthony Liguori | mode_t ret; |
888 | bb9e3216 | Anthony Liguori | |
889 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
890 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
891 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
892 | bb9e3216 | Anthony Liguori | } |
893 | bb9e3216 | Anthony Liguori | |
894 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SYMLINK) {
|
895 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFLNK; |
896 | cf03eb2c | Arun R Bharadwaj | } |
897 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SOCKET) {
|
898 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFSOCK; |
899 | cf03eb2c | Arun R Bharadwaj | } |
900 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
901 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFIFO; |
902 | cf03eb2c | Arun R Bharadwaj | } |
903 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_DEVICE) {
|
904 | cf03eb2c | Arun R Bharadwaj | if (extension && extension->data[0] == 'c') { |
905 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFCHR; |
906 | cf03eb2c | Arun R Bharadwaj | } else {
|
907 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFBLK; |
908 | bb9e3216 | Anthony Liguori | } |
909 | bb9e3216 | Anthony Liguori | } |
910 | bb9e3216 | Anthony Liguori | |
911 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
912 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
913 | bb9e3216 | Anthony Liguori | } |
914 | bb9e3216 | Anthony Liguori | |
915 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
916 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
917 | bb9e3216 | Anthony Liguori | } |
918 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
919 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
920 | bb9e3216 | Anthony Liguori | } |
921 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
922 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
923 | bb9e3216 | Anthony Liguori | } |
924 | bb9e3216 | Anthony Liguori | |
925 | bb9e3216 | Anthony Liguori | return ret;
|
926 | bb9e3216 | Anthony Liguori | } |
927 | bb9e3216 | Anthony Liguori | |
928 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
929 | bb9e3216 | Anthony Liguori | { |
930 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
931 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
932 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
933 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
934 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
935 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
936 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
937 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
938 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
939 | bb9e3216 | Anthony Liguori | !stat->name.size && |
940 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
941 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
942 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
943 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
944 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
945 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
946 | bb9e3216 | Anthony Liguori | return 1; |
947 | bb9e3216 | Anthony Liguori | } |
948 | bb9e3216 | Anthony Liguori | |
949 | bb9e3216 | Anthony Liguori | return 0; |
950 | bb9e3216 | Anthony Liguori | } |
951 | bb9e3216 | Anthony Liguori | |
952 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
953 | bb9e3216 | Anthony Liguori | { |
954 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
955 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
956 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
957 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
958 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
959 | bb9e3216 | Anthony Liguori | } |
960 | bb9e3216 | Anthony Liguori | |
961 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
962 | bb9e3216 | Anthony Liguori | { |
963 | bb9e3216 | Anthony Liguori | uint32_t mode; |
964 | bb9e3216 | Anthony Liguori | |
965 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
966 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
967 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
968 | bb9e3216 | Anthony Liguori | } |
969 | bb9e3216 | Anthony Liguori | |
970 | cf03eb2c | Arun R Bharadwaj | if (S_ISLNK(stbuf->st_mode)) {
|
971 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SYMLINK; |
972 | cf03eb2c | Arun R Bharadwaj | } |
973 | bb9e3216 | Anthony Liguori | |
974 | cf03eb2c | Arun R Bharadwaj | if (S_ISSOCK(stbuf->st_mode)) {
|
975 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SOCKET; |
976 | cf03eb2c | Arun R Bharadwaj | } |
977 | bb9e3216 | Anthony Liguori | |
978 | cf03eb2c | Arun R Bharadwaj | if (S_ISFIFO(stbuf->st_mode)) {
|
979 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_NAMED_PIPE; |
980 | cf03eb2c | Arun R Bharadwaj | } |
981 | bb9e3216 | Anthony Liguori | |
982 | cf03eb2c | Arun R Bharadwaj | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
983 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_DEVICE; |
984 | cf03eb2c | Arun R Bharadwaj | } |
985 | bb9e3216 | Anthony Liguori | |
986 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISUID) {
|
987 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETUID; |
988 | cf03eb2c | Arun R Bharadwaj | } |
989 | bb9e3216 | Anthony Liguori | |
990 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISGID) {
|
991 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETGID; |
992 | cf03eb2c | Arun R Bharadwaj | } |
993 | bb9e3216 | Anthony Liguori | |
994 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISVTX) {
|
995 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETVTX; |
996 | bb9e3216 | Anthony Liguori | } |
997 | bb9e3216 | Anthony Liguori | |
998 | bb9e3216 | Anthony Liguori | return mode;
|
999 | bb9e3216 | Anthony Liguori | } |
1000 | bb9e3216 | Anthony Liguori | |
1001 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
1002 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
1003 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
1004 | bb9e3216 | Anthony Liguori | { |
1005 | bb9e3216 | Anthony Liguori | int err;
|
1006 | bb9e3216 | Anthony Liguori | const char *str; |
1007 | bb9e3216 | Anthony Liguori | |
1008 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
1009 | bb9e3216 | Anthony Liguori | |
1010 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
1011 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
1012 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
1013 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
1014 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
1015 | bb9e3216 | Anthony Liguori | |
1016 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
1017 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
1018 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
1019 | bb9e3216 | Anthony Liguori | |
1020 | cf03eb2c | Arun R Bharadwaj | v9stat->n_uid = stbuf->st_uid; |
1021 | cf03eb2c | Arun R Bharadwaj | v9stat->n_gid = stbuf->st_gid; |
1022 | cf03eb2c | Arun R Bharadwaj | v9stat->n_muid = 0;
|
1023 | bb9e3216 | Anthony Liguori | |
1024 | cf03eb2c | Arun R Bharadwaj | v9fs_string_null(&v9stat->extension); |
1025 | bb9e3216 | Anthony Liguori | |
1026 | cf03eb2c | Arun R Bharadwaj | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
1027 | cf03eb2c | Arun R Bharadwaj | err = v9fs_do_readlink(s, name, &v9stat->extension); |
1028 | cf03eb2c | Arun R Bharadwaj | if (err == -1) { |
1029 | cf03eb2c | Arun R Bharadwaj | err = -errno; |
1030 | cf03eb2c | Arun R Bharadwaj | return err;
|
1031 | bb9e3216 | Anthony Liguori | } |
1032 | cf03eb2c | Arun R Bharadwaj | v9stat->extension.data[err] = 0;
|
1033 | cf03eb2c | Arun R Bharadwaj | v9stat->extension.size = err; |
1034 | cf03eb2c | Arun R Bharadwaj | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
1035 | cf03eb2c | Arun R Bharadwaj | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
1036 | cf03eb2c | Arun R Bharadwaj | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
1037 | cf03eb2c | Arun R Bharadwaj | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
1038 | cf03eb2c | Arun R Bharadwaj | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
1039 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(&v9stat->extension, "%s %lu",
|
1040 | c9ba47dc | Stefan Weil | "HARDLINKCOUNT", (unsigned long)stbuf->st_nlink); |
1041 | bb9e3216 | Anthony Liguori | } |
1042 | bb9e3216 | Anthony Liguori | |
1043 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
1044 | bb9e3216 | Anthony Liguori | if (str) {
|
1045 | bb9e3216 | Anthony Liguori | str += 1;
|
1046 | bb9e3216 | Anthony Liguori | } else {
|
1047 | bb9e3216 | Anthony Liguori | str = name->data; |
1048 | bb9e3216 | Anthony Liguori | } |
1049 | bb9e3216 | Anthony Liguori | |
1050 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
1051 | bb9e3216 | Anthony Liguori | |
1052 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
1053 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
1054 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
1055 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
1056 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
1057 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
1058 | bb9e3216 | Anthony Liguori | return 0; |
1059 | bb9e3216 | Anthony Liguori | } |
1060 | bb9e3216 | Anthony Liguori | |
1061 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MODE 0x00000001ULL |
1062 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_NLINK 0x00000002ULL |
1063 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_UID 0x00000004ULL |
1064 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GID 0x00000008ULL |
1065 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_RDEV 0x00000010ULL |
1066 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ATIME 0x00000020ULL |
1067 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MTIME 0x00000040ULL |
1068 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_CTIME 0x00000080ULL |
1069 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_INO 0x00000100ULL |
1070 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_SIZE 0x00000200ULL |
1071 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BLOCKS 0x00000400ULL |
1072 | 00ede4c2 | Sripathi Kodi | |
1073 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BTIME 0x00000800ULL |
1074 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GEN 0x00001000ULL |
1075 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_DATA_VERSION 0x00002000ULL |
1076 | 00ede4c2 | Sripathi Kodi | |
1077 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ |
1078 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ |
1079 | 00ede4c2 | Sripathi Kodi | |
1080 | 00ede4c2 | Sripathi Kodi | |
1081 | 00ede4c2 | Sripathi Kodi | static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, |
1082 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *v9lstat) |
1083 | 00ede4c2 | Sripathi Kodi | { |
1084 | 00ede4c2 | Sripathi Kodi | memset(v9lstat, 0, sizeof(*v9lstat)); |
1085 | 00ede4c2 | Sripathi Kodi | |
1086 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mode = stbuf->st_mode; |
1087 | 00ede4c2 | Sripathi Kodi | v9lstat->st_nlink = stbuf->st_nlink; |
1088 | 00ede4c2 | Sripathi Kodi | v9lstat->st_uid = stbuf->st_uid; |
1089 | 00ede4c2 | Sripathi Kodi | v9lstat->st_gid = stbuf->st_gid; |
1090 | 00ede4c2 | Sripathi Kodi | v9lstat->st_rdev = stbuf->st_rdev; |
1091 | 00ede4c2 | Sripathi Kodi | v9lstat->st_size = stbuf->st_size; |
1092 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blksize = stbuf->st_blksize; |
1093 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blocks = stbuf->st_blocks; |
1094 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_sec = stbuf->st_atime; |
1095 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; |
1096 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_sec = stbuf->st_mtime; |
1097 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; |
1098 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_sec = stbuf->st_ctime; |
1099 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; |
1100 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat */
|
1101 | 00ede4c2 | Sripathi Kodi | v9lstat->st_result_mask = P9_STATS_BASIC; |
1102 | 00ede4c2 | Sripathi Kodi | |
1103 | 00ede4c2 | Sripathi Kodi | stat_to_qid(stbuf, &v9lstat->qid); |
1104 | 00ede4c2 | Sripathi Kodi | } |
1105 | 00ede4c2 | Sripathi Kodi | |
1106 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
1107 | 1f5a89bf | Anthony Liguori | { |
1108 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
1109 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
1110 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
1111 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
1112 | 1f5a89bf | Anthony Liguori | len = 0;
|
1113 | 1f5a89bf | Anthony Liguori | } else {
|
1114 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
1115 | 1f5a89bf | Anthony Liguori | sg++; |
1116 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
1117 | 1f5a89bf | Anthony Liguori | } |
1118 | 1f5a89bf | Anthony Liguori | } |
1119 | 1f5a89bf | Anthony Liguori | |
1120 | 1f5a89bf | Anthony Liguori | return sg;
|
1121 | 1f5a89bf | Anthony Liguori | } |
1122 | 1f5a89bf | Anthony Liguori | |
1123 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
1124 | 1f5a89bf | Anthony Liguori | { |
1125 | 1f5a89bf | Anthony Liguori | int i;
|
1126 | 1f5a89bf | Anthony Liguori | int total = 0; |
1127 | 1f5a89bf | Anthony Liguori | |
1128 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
1129 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
1130 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
1131 | 1f5a89bf | Anthony Liguori | i++; |
1132 | 1f5a89bf | Anthony Liguori | break;
|
1133 | 1f5a89bf | Anthony Liguori | } |
1134 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
1135 | 1f5a89bf | Anthony Liguori | } |
1136 | 1f5a89bf | Anthony Liguori | |
1137 | 1f5a89bf | Anthony Liguori | *cnt = i; |
1138 | 1f5a89bf | Anthony Liguori | |
1139 | 1f5a89bf | Anthony Liguori | return sg;
|
1140 | 1f5a89bf | Anthony Liguori | } |
1141 | 1f5a89bf | Anthony Liguori | |
1142 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
1143 | 1f5a89bf | Anthony Liguori | { |
1144 | 1f5a89bf | Anthony Liguori | int i;
|
1145 | 1f5a89bf | Anthony Liguori | |
1146 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
1147 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
1148 | 1f5a89bf | Anthony Liguori | if (i) {
|
1149 | 1f5a89bf | Anthony Liguori | printf(", ");
|
1150 | 1f5a89bf | Anthony Liguori | } |
1151 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
1152 | 1f5a89bf | Anthony Liguori | } |
1153 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
1154 | 1f5a89bf | Anthony Liguori | } |
1155 | 1f5a89bf | Anthony Liguori | |
1156 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
1157 | 8cf89e00 | Anthony Liguori | { |
1158 | 8cf89e00 | Anthony Liguori | V9fsString str; |
1159 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
1160 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
1161 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
1162 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
1163 | 8cf89e00 | Anthony Liguori | } |
1164 | 8cf89e00 | Anthony Liguori | |
1165 | 9f107513 | Anthony Liguori | static void v9fs_version(V9fsState *s, V9fsPDU *pdu) |
1166 | 9f107513 | Anthony Liguori | { |
1167 | 92c1ad03 | Anthony Liguori | V9fsString version; |
1168 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
1169 | 92c1ad03 | Anthony Liguori | |
1170 | 5e94c103 | M. Mohan Kumar | pdu_unmarshal(pdu, offset, "ds", &s->msize, &version);
|
1171 | 92c1ad03 | Anthony Liguori | |
1172 | 84151514 | M. Mohan Kumar | if (!strcmp(version.data, "9P2000.u")) { |
1173 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000U; |
1174 | 84151514 | M. Mohan Kumar | } else if (!strcmp(version.data, "9P2000.L")) { |
1175 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000L; |
1176 | 84151514 | M. Mohan Kumar | } else {
|
1177 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
1178 | 9f107513 | Anthony Liguori | } |
1179 | 92c1ad03 | Anthony Liguori | |
1180 | 5e94c103 | M. Mohan Kumar | offset += pdu_marshal(pdu, offset, "ds", s->msize, &version);
|
1181 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
1182 | 92c1ad03 | Anthony Liguori | |
1183 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
1184 | 9f107513 | Anthony Liguori | } |
1185 | 9f107513 | Anthony Liguori | |
1186 | 9f107513 | Anthony Liguori | static void v9fs_attach(V9fsState *s, V9fsPDU *pdu) |
1187 | 9f107513 | Anthony Liguori | { |
1188 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
1189 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
1190 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
1191 | 955efc47 | Anthony Liguori | V9fsQID qid; |
1192 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
1193 | 955efc47 | Anthony Liguori | ssize_t err; |
1194 | 955efc47 | Anthony Liguori | |
1195 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
1196 | 955efc47 | Anthony Liguori | |
1197 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
1198 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
1199 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1200 | 955efc47 | Anthony Liguori | goto out;
|
1201 | 9f107513 | Anthony Liguori | } |
1202 | 955efc47 | Anthony Liguori | |
1203 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
1204 | 955efc47 | Anthony Liguori | |
1205 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
1206 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
1207 | 955efc47 | Anthony Liguori | if (err) {
|
1208 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1209 | 955efc47 | Anthony Liguori | free_fid(s, fid); |
1210 | 955efc47 | Anthony Liguori | goto out;
|
1211 | 955efc47 | Anthony Liguori | } |
1212 | 955efc47 | Anthony Liguori | |
1213 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
1214 | 955efc47 | Anthony Liguori | |
1215 | 955efc47 | Anthony Liguori | err = offset; |
1216 | 955efc47 | Anthony Liguori | out:
|
1217 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
1218 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
1219 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1220 | 9f107513 | Anthony Liguori | } |
1221 | 9f107513 | Anthony Liguori | |
1222 | 4da7d3fa | Anthony Liguori | static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err) |
1223 | 4da7d3fa | Anthony Liguori | { |
1224 | 4da7d3fa | Anthony Liguori | if (err == -1) { |
1225 | 4da7d3fa | Anthony Liguori | err = -errno; |
1226 | 4da7d3fa | Anthony Liguori | goto out;
|
1227 | 4da7d3fa | Anthony Liguori | } |
1228 | 4da7d3fa | Anthony Liguori | |
1229 | 4da7d3fa | Anthony Liguori | err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat); |
1230 | 4da7d3fa | Anthony Liguori | if (err) {
|
1231 | 4da7d3fa | Anthony Liguori | goto out;
|
1232 | 4da7d3fa | Anthony Liguori | } |
1233 | 4da7d3fa | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat); |
1234 | 4da7d3fa | Anthony Liguori | err = vs->offset; |
1235 | 4da7d3fa | Anthony Liguori | |
1236 | 4da7d3fa | Anthony Liguori | out:
|
1237 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1238 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1239 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1240 | 4da7d3fa | Anthony Liguori | } |
1241 | 4da7d3fa | Anthony Liguori | |
1242 | 9f107513 | Anthony Liguori | static void v9fs_stat(V9fsState *s, V9fsPDU *pdu) |
1243 | 9f107513 | Anthony Liguori | { |
1244 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1245 | 4da7d3fa | Anthony Liguori | V9fsStatState *vs; |
1246 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1247 | 4da7d3fa | Anthony Liguori | |
1248 | 4da7d3fa | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1249 | 4da7d3fa | Anthony Liguori | vs->pdu = pdu; |
1250 | 4da7d3fa | Anthony Liguori | vs->offset = 7;
|
1251 | 4da7d3fa | Anthony Liguori | |
1252 | 4da7d3fa | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1253 | 4da7d3fa | Anthony Liguori | |
1254 | 4da7d3fa | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1255 | 4da7d3fa | Anthony Liguori | |
1256 | 4da7d3fa | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1257 | 4da7d3fa | Anthony Liguori | if (vs->fidp == NULL) { |
1258 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1259 | 4da7d3fa | Anthony Liguori | goto out;
|
1260 | 9f107513 | Anthony Liguori | } |
1261 | 4da7d3fa | Anthony Liguori | |
1262 | 4da7d3fa | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1263 | 4da7d3fa | Anthony Liguori | v9fs_stat_post_lstat(s, vs, err); |
1264 | 4da7d3fa | Anthony Liguori | return;
|
1265 | 4da7d3fa | Anthony Liguori | |
1266 | 4da7d3fa | Anthony Liguori | out:
|
1267 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1268 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1269 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1270 | 9f107513 | Anthony Liguori | } |
1271 | 9f107513 | Anthony Liguori | |
1272 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr_post_lstat(V9fsState *s, V9fsStatStateDotl *vs, |
1273 | 00ede4c2 | Sripathi Kodi | int err)
|
1274 | 00ede4c2 | Sripathi Kodi | { |
1275 | 00ede4c2 | Sripathi Kodi | if (err == -1) { |
1276 | 00ede4c2 | Sripathi Kodi | err = -errno; |
1277 | 00ede4c2 | Sripathi Kodi | goto out;
|
1278 | 00ede4c2 | Sripathi Kodi | } |
1279 | 00ede4c2 | Sripathi Kodi | |
1280 | 00ede4c2 | Sripathi Kodi | stat_to_v9stat_dotl(s, &vs->stbuf, &vs->v9stat_dotl); |
1281 | 00ede4c2 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "A", &vs->v9stat_dotl);
|
1282 | 00ede4c2 | Sripathi Kodi | err = vs->offset; |
1283 | 00ede4c2 | Sripathi Kodi | |
1284 | 00ede4c2 | Sripathi Kodi | out:
|
1285 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1286 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1287 | 00ede4c2 | Sripathi Kodi | } |
1288 | 00ede4c2 | Sripathi Kodi | |
1289 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr(V9fsState *s, V9fsPDU *pdu) |
1290 | 00ede4c2 | Sripathi Kodi | { |
1291 | 00ede4c2 | Sripathi Kodi | int32_t fid; |
1292 | 00ede4c2 | Sripathi Kodi | V9fsStatStateDotl *vs; |
1293 | 00ede4c2 | Sripathi Kodi | ssize_t err = 0;
|
1294 | 00ede4c2 | Sripathi Kodi | V9fsFidState *fidp; |
1295 | 00ede4c2 | Sripathi Kodi | uint64_t request_mask; |
1296 | 00ede4c2 | Sripathi Kodi | |
1297 | 00ede4c2 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1298 | 00ede4c2 | Sripathi Kodi | vs->pdu = pdu; |
1299 | 00ede4c2 | Sripathi Kodi | vs->offset = 7;
|
1300 | 00ede4c2 | Sripathi Kodi | |
1301 | 00ede4c2 | Sripathi Kodi | memset(&vs->v9stat_dotl, 0, sizeof(vs->v9stat_dotl)); |
1302 | 00ede4c2 | Sripathi Kodi | |
1303 | 00ede4c2 | Sripathi Kodi | pdu_unmarshal(vs->pdu, vs->offset, "dq", &fid, &request_mask);
|
1304 | 00ede4c2 | Sripathi Kodi | |
1305 | 00ede4c2 | Sripathi Kodi | fidp = lookup_fid(s, fid); |
1306 | 00ede4c2 | Sripathi Kodi | if (fidp == NULL) { |
1307 | 00ede4c2 | Sripathi Kodi | err = -ENOENT; |
1308 | 00ede4c2 | Sripathi Kodi | goto out;
|
1309 | 00ede4c2 | Sripathi Kodi | } |
1310 | 00ede4c2 | Sripathi Kodi | |
1311 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat, so there is no
|
1312 | 00ede4c2 | Sripathi Kodi | * need to look at request_mask.
|
1313 | 00ede4c2 | Sripathi Kodi | */
|
1314 | 00ede4c2 | Sripathi Kodi | err = v9fs_do_lstat(s, &fidp->path, &vs->stbuf); |
1315 | 00ede4c2 | Sripathi Kodi | v9fs_getattr_post_lstat(s, vs, err); |
1316 | 00ede4c2 | Sripathi Kodi | return;
|
1317 | 00ede4c2 | Sripathi Kodi | |
1318 | 00ede4c2 | Sripathi Kodi | out:
|
1319 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1320 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1321 | 00ede4c2 | Sripathi Kodi | } |
1322 | 00ede4c2 | Sripathi Kodi | |
1323 | c79ce737 | Sripathi Kodi | /* From Linux kernel code */
|
1324 | c79ce737 | Sripathi Kodi | #define ATTR_MODE (1 << 0) |
1325 | c79ce737 | Sripathi Kodi | #define ATTR_UID (1 << 1) |
1326 | c79ce737 | Sripathi Kodi | #define ATTR_GID (1 << 2) |
1327 | c79ce737 | Sripathi Kodi | #define ATTR_SIZE (1 << 3) |
1328 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME (1 << 4) |
1329 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME (1 << 5) |
1330 | c79ce737 | Sripathi Kodi | #define ATTR_CTIME (1 << 6) |
1331 | c79ce737 | Sripathi Kodi | #define ATTR_MASK 127 |
1332 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME_SET (1 << 7) |
1333 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME_SET (1 << 8) |
1334 | c79ce737 | Sripathi Kodi | |
1335 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_truncate(V9fsState *s, V9fsSetattrState *vs, |
1336 | c79ce737 | Sripathi Kodi | int err)
|
1337 | c79ce737 | Sripathi Kodi | { |
1338 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1339 | c79ce737 | Sripathi Kodi | err = -errno; |
1340 | c79ce737 | Sripathi Kodi | goto out;
|
1341 | c79ce737 | Sripathi Kodi | } |
1342 | c79ce737 | Sripathi Kodi | err = vs->offset; |
1343 | c79ce737 | Sripathi Kodi | |
1344 | c79ce737 | Sripathi Kodi | out:
|
1345 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1346 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1347 | c79ce737 | Sripathi Kodi | } |
1348 | c79ce737 | Sripathi Kodi | |
1349 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chown(V9fsState *s, V9fsSetattrState *vs, int err) |
1350 | c79ce737 | Sripathi Kodi | { |
1351 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1352 | c79ce737 | Sripathi Kodi | err = -errno; |
1353 | c79ce737 | Sripathi Kodi | goto out;
|
1354 | c79ce737 | Sripathi Kodi | } |
1355 | c79ce737 | Sripathi Kodi | |
1356 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_SIZE)) {
|
1357 | c79ce737 | Sripathi Kodi | err = v9fs_do_truncate(s, &vs->fidp->path, vs->v9iattr.size); |
1358 | c79ce737 | Sripathi Kodi | } |
1359 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_truncate(s, vs, err); |
1360 | c79ce737 | Sripathi Kodi | return;
|
1361 | c79ce737 | Sripathi Kodi | |
1362 | c79ce737 | Sripathi Kodi | out:
|
1363 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1364 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1365 | c79ce737 | Sripathi Kodi | } |
1366 | c79ce737 | Sripathi Kodi | |
1367 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_utimensat(V9fsState *s, V9fsSetattrState *vs, |
1368 | c79ce737 | Sripathi Kodi | int err)
|
1369 | c79ce737 | Sripathi Kodi | { |
1370 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1371 | c79ce737 | Sripathi Kodi | err = -errno; |
1372 | c79ce737 | Sripathi Kodi | goto out;
|
1373 | c79ce737 | Sripathi Kodi | } |
1374 | c79ce737 | Sripathi Kodi | |
1375 | c79ce737 | Sripathi Kodi | /* If the only valid entry in iattr is ctime we can call
|
1376 | c79ce737 | Sripathi Kodi | * chown(-1,-1) to update the ctime of the file
|
1377 | c79ce737 | Sripathi Kodi | */
|
1378 | c79ce737 | Sripathi Kodi | if ((vs->v9iattr.valid & (ATTR_UID | ATTR_GID)) ||
|
1379 | c79ce737 | Sripathi Kodi | ((vs->v9iattr.valid & ATTR_CTIME) |
1380 | c79ce737 | Sripathi Kodi | && !((vs->v9iattr.valid & ATTR_MASK) & ~ATTR_CTIME))) { |
1381 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_UID)) {
|
1382 | c79ce737 | Sripathi Kodi | vs->v9iattr.uid = -1;
|
1383 | c79ce737 | Sripathi Kodi | } |
1384 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_GID)) {
|
1385 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid = -1;
|
1386 | c79ce737 | Sripathi Kodi | } |
1387 | c79ce737 | Sripathi Kodi | err = v9fs_do_chown(s, &vs->fidp->path, vs->v9iattr.uid, |
1388 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid); |
1389 | c79ce737 | Sripathi Kodi | } |
1390 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chown(s, vs, err); |
1391 | c79ce737 | Sripathi Kodi | return;
|
1392 | c79ce737 | Sripathi Kodi | |
1393 | c79ce737 | Sripathi Kodi | out:
|
1394 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1395 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1396 | c79ce737 | Sripathi Kodi | } |
1397 | c79ce737 | Sripathi Kodi | |
1398 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chmod(V9fsState *s, V9fsSetattrState *vs, int err) |
1399 | c79ce737 | Sripathi Kodi | { |
1400 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1401 | c79ce737 | Sripathi Kodi | err = -errno; |
1402 | c79ce737 | Sripathi Kodi | goto out;
|
1403 | c79ce737 | Sripathi Kodi | } |
1404 | c79ce737 | Sripathi Kodi | |
1405 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_ATIME | ATTR_MTIME)) {
|
1406 | c79ce737 | Sripathi Kodi | struct timespec times[2]; |
1407 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME) {
|
1408 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME_SET) {
|
1409 | c79ce737 | Sripathi Kodi | times[0].tv_sec = vs->v9iattr.atime_sec;
|
1410 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = vs->v9iattr.atime_nsec;
|
1411 | c79ce737 | Sripathi Kodi | } else {
|
1412 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_NOW;
|
1413 | c79ce737 | Sripathi Kodi | } |
1414 | c79ce737 | Sripathi Kodi | } else {
|
1415 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
1416 | c79ce737 | Sripathi Kodi | } |
1417 | c79ce737 | Sripathi Kodi | |
1418 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME) {
|
1419 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME_SET) {
|
1420 | c79ce737 | Sripathi Kodi | times[1].tv_sec = vs->v9iattr.mtime_sec;
|
1421 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = vs->v9iattr.mtime_nsec;
|
1422 | c79ce737 | Sripathi Kodi | } else {
|
1423 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_NOW;
|
1424 | c79ce737 | Sripathi Kodi | } |
1425 | c79ce737 | Sripathi Kodi | } else {
|
1426 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
1427 | c79ce737 | Sripathi Kodi | } |
1428 | c79ce737 | Sripathi Kodi | err = v9fs_do_utimensat(s, &vs->fidp->path, times); |
1429 | c79ce737 | Sripathi Kodi | } |
1430 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_utimensat(s, vs, err); |
1431 | c79ce737 | Sripathi Kodi | return;
|
1432 | c79ce737 | Sripathi Kodi | |
1433 | c79ce737 | Sripathi Kodi | out:
|
1434 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1435 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1436 | c79ce737 | Sripathi Kodi | } |
1437 | c79ce737 | Sripathi Kodi | |
1438 | c79ce737 | Sripathi Kodi | static void v9fs_setattr(V9fsState *s, V9fsPDU *pdu) |
1439 | c79ce737 | Sripathi Kodi | { |
1440 | c79ce737 | Sripathi Kodi | int32_t fid; |
1441 | c79ce737 | Sripathi Kodi | V9fsSetattrState *vs; |
1442 | c79ce737 | Sripathi Kodi | int err = 0; |
1443 | c79ce737 | Sripathi Kodi | |
1444 | c79ce737 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1445 | c79ce737 | Sripathi Kodi | vs->pdu = pdu; |
1446 | c79ce737 | Sripathi Kodi | vs->offset = 7;
|
1447 | c79ce737 | Sripathi Kodi | |
1448 | c79ce737 | Sripathi Kodi | pdu_unmarshal(pdu, vs->offset, "dI", &fid, &vs->v9iattr);
|
1449 | c79ce737 | Sripathi Kodi | |
1450 | c79ce737 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
1451 | c79ce737 | Sripathi Kodi | if (vs->fidp == NULL) { |
1452 | c79ce737 | Sripathi Kodi | err = -EINVAL; |
1453 | c79ce737 | Sripathi Kodi | goto out;
|
1454 | c79ce737 | Sripathi Kodi | } |
1455 | c79ce737 | Sripathi Kodi | |
1456 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MODE) {
|
1457 | c79ce737 | Sripathi Kodi | err = v9fs_do_chmod(s, &vs->fidp->path, vs->v9iattr.mode); |
1458 | c79ce737 | Sripathi Kodi | } |
1459 | c79ce737 | Sripathi Kodi | |
1460 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chmod(s, vs, err); |
1461 | c79ce737 | Sripathi Kodi | return;
|
1462 | c79ce737 | Sripathi Kodi | |
1463 | c79ce737 | Sripathi Kodi | out:
|
1464 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1465 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1466 | c79ce737 | Sripathi Kodi | } |
1467 | c79ce737 | Sripathi Kodi | |
1468 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_complete(V9fsState *s, V9fsWalkState *vs, int err) |
1469 | ff5e54c9 | Anthony Liguori | { |
1470 | ff5e54c9 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1471 | ff5e54c9 | Anthony Liguori | |
1472 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1473 | ff5e54c9 | Anthony Liguori | for (vs->name_idx = 0; vs->name_idx < vs->nwnames; vs->name_idx++) { |
1474 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->wnames[vs->name_idx]); |
1475 | ff5e54c9 | Anthony Liguori | } |
1476 | ff5e54c9 | Anthony Liguori | |
1477 | ff5e54c9 | Anthony Liguori | qemu_free(vs->wnames); |
1478 | ff5e54c9 | Anthony Liguori | qemu_free(vs->qids); |
1479 | ff5e54c9 | Anthony Liguori | } |
1480 | ff5e54c9 | Anthony Liguori | } |
1481 | ff5e54c9 | Anthony Liguori | |
1482 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_marshal(V9fsWalkState *vs) |
1483 | ff5e54c9 | Anthony Liguori | { |
1484 | ff5e54c9 | Anthony Liguori | int i;
|
1485 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1486 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "w", vs->nwnames);
|
1487 | ff5e54c9 | Anthony Liguori | |
1488 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1489 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qids[i]);
|
1490 | ff5e54c9 | Anthony Liguori | } |
1491 | ff5e54c9 | Anthony Liguori | } |
1492 | ff5e54c9 | Anthony Liguori | |
1493 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_newfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1494 | ff5e54c9 | Anthony Liguori | int err)
|
1495 | ff5e54c9 | Anthony Liguori | { |
1496 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1497 | ff5e54c9 | Anthony Liguori | free_fid(s, vs->newfidp->fid); |
1498 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1499 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1500 | ff5e54c9 | Anthony Liguori | goto out;
|
1501 | ff5e54c9 | Anthony Liguori | } |
1502 | ff5e54c9 | Anthony Liguori | |
1503 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1504 | ff5e54c9 | Anthony Liguori | |
1505 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1506 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1507 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1508 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1509 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1510 | ff5e54c9 | Anthony Liguori | |
1511 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1512 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1513 | ff5e54c9 | Anthony Liguori | return;
|
1514 | ff5e54c9 | Anthony Liguori | } |
1515 | ff5e54c9 | Anthony Liguori | |
1516 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1517 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1518 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1519 | ff5e54c9 | Anthony Liguori | out:
|
1520 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1521 | ff5e54c9 | Anthony Liguori | } |
1522 | ff5e54c9 | Anthony Liguori | |
1523 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_oldfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1524 | ff5e54c9 | Anthony Liguori | int err)
|
1525 | ff5e54c9 | Anthony Liguori | { |
1526 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1527 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1528 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1529 | ff5e54c9 | Anthony Liguori | goto out;
|
1530 | ff5e54c9 | Anthony Liguori | } |
1531 | ff5e54c9 | Anthony Liguori | |
1532 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1533 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1534 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1535 | ff5e54c9 | Anthony Liguori | |
1536 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1537 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1538 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1539 | ff5e54c9 | Anthony Liguori | |
1540 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1541 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1542 | ff5e54c9 | Anthony Liguori | return;
|
1543 | ff5e54c9 | Anthony Liguori | } |
1544 | ff5e54c9 | Anthony Liguori | |
1545 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1546 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1547 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1548 | ff5e54c9 | Anthony Liguori | out:
|
1549 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1550 | ff5e54c9 | Anthony Liguori | } |
1551 | ff5e54c9 | Anthony Liguori | |
1552 | 9f107513 | Anthony Liguori | static void v9fs_walk(V9fsState *s, V9fsPDU *pdu) |
1553 | 9f107513 | Anthony Liguori | { |
1554 | ff5e54c9 | Anthony Liguori | int32_t fid, newfid; |
1555 | ff5e54c9 | Anthony Liguori | V9fsWalkState *vs; |
1556 | ff5e54c9 | Anthony Liguori | int err = 0; |
1557 | ff5e54c9 | Anthony Liguori | int i;
|
1558 | ff5e54c9 | Anthony Liguori | |
1559 | ff5e54c9 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1560 | ff5e54c9 | Anthony Liguori | vs->pdu = pdu; |
1561 | ff5e54c9 | Anthony Liguori | vs->wnames = NULL;
|
1562 | ff5e54c9 | Anthony Liguori | vs->qids = NULL;
|
1563 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1564 | ff5e54c9 | Anthony Liguori | |
1565 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "ddw", &fid,
|
1566 | ff5e54c9 | Anthony Liguori | &newfid, &vs->nwnames); |
1567 | ff5e54c9 | Anthony Liguori | |
1568 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1569 | ff5e54c9 | Anthony Liguori | vs->wnames = qemu_mallocz(sizeof(vs->wnames[0]) * vs->nwnames); |
1570 | ff5e54c9 | Anthony Liguori | |
1571 | ff5e54c9 | Anthony Liguori | vs->qids = qemu_mallocz(sizeof(vs->qids[0]) * vs->nwnames); |
1572 | ff5e54c9 | Anthony Liguori | |
1573 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1574 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "s",
|
1575 | ff5e54c9 | Anthony Liguori | &vs->wnames[i]); |
1576 | ff5e54c9 | Anthony Liguori | } |
1577 | ff5e54c9 | Anthony Liguori | } |
1578 | ff5e54c9 | Anthony Liguori | |
1579 | ff5e54c9 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1580 | ff5e54c9 | Anthony Liguori | if (vs->fidp == NULL) { |
1581 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1582 | ff5e54c9 | Anthony Liguori | goto out;
|
1583 | ff5e54c9 | Anthony Liguori | } |
1584 | ff5e54c9 | Anthony Liguori | |
1585 | ff5e54c9 | Anthony Liguori | /* FIXME: is this really valid? */
|
1586 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1587 | ff5e54c9 | Anthony Liguori | |
1588 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
1589 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1590 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1591 | ff5e54c9 | Anthony Liguori | |
1592 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1593 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1594 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1595 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1596 | ff5e54c9 | Anthony Liguori | |
1597 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1598 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1599 | ff5e54c9 | Anthony Liguori | return;
|
1600 | ff5e54c9 | Anthony Liguori | } |
1601 | ff5e54c9 | Anthony Liguori | } else {
|
1602 | ff5e54c9 | Anthony Liguori | vs->newfidp = alloc_fid(s, newfid); |
1603 | ff5e54c9 | Anthony Liguori | if (vs->newfidp == NULL) { |
1604 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1605 | ff5e54c9 | Anthony Liguori | goto out;
|
1606 | ff5e54c9 | Anthony Liguori | } |
1607 | ff5e54c9 | Anthony Liguori | |
1608 | ff5e54c9 | Anthony Liguori | vs->newfidp->uid = vs->fidp->uid; |
1609 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1610 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1611 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->fidp->path); |
1612 | ff5e54c9 | Anthony Liguori | |
1613 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1614 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1615 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1616 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1617 | ff5e54c9 | Anthony Liguori | |
1618 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1619 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1620 | ff5e54c9 | Anthony Liguori | return;
|
1621 | ff5e54c9 | Anthony Liguori | } |
1622 | 9f107513 | Anthony Liguori | } |
1623 | ff5e54c9 | Anthony Liguori | |
1624 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1625 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1626 | ff5e54c9 | Anthony Liguori | out:
|
1627 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1628 | 9f107513 | Anthony Liguori | } |
1629 | 9f107513 | Anthony Liguori | |
1630 | 5e94c103 | M. Mohan Kumar | static int32_t get_iounit(V9fsState *s, V9fsString *name)
|
1631 | 5e94c103 | M. Mohan Kumar | { |
1632 | 5e94c103 | M. Mohan Kumar | struct statfs stbuf;
|
1633 | 5e94c103 | M. Mohan Kumar | int32_t iounit = 0;
|
1634 | 5e94c103 | M. Mohan Kumar | |
1635 | 5e94c103 | M. Mohan Kumar | /*
|
1636 | 5e94c103 | M. Mohan Kumar | * iounit should be multiples of f_bsize (host filesystem block size
|
1637 | 5e94c103 | M. Mohan Kumar | * and as well as less than (client msize - P9_IOHDRSZ))
|
1638 | 5e94c103 | M. Mohan Kumar | */
|
1639 | 5e94c103 | M. Mohan Kumar | if (!v9fs_do_statfs(s, name, &stbuf)) {
|
1640 | 5e94c103 | M. Mohan Kumar | iounit = stbuf.f_bsize; |
1641 | 5e94c103 | M. Mohan Kumar | iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; |
1642 | 5e94c103 | M. Mohan Kumar | } |
1643 | 5e94c103 | M. Mohan Kumar | |
1644 | 5e94c103 | M. Mohan Kumar | if (!iounit) {
|
1645 | 5e94c103 | M. Mohan Kumar | iounit = s->msize - P9_IOHDRSZ; |
1646 | 5e94c103 | M. Mohan Kumar | } |
1647 | 5e94c103 | M. Mohan Kumar | return iounit;
|
1648 | 5e94c103 | M. Mohan Kumar | } |
1649 | 5e94c103 | M. Mohan Kumar | |
1650 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_opendir(V9fsState *s, V9fsOpenState *vs, int err) |
1651 | a6568fe2 | Anthony Liguori | { |
1652 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.dir == NULL) { |
1653 | a6568fe2 | Anthony Liguori | err = -errno; |
1654 | a6568fe2 | Anthony Liguori | goto out;
|
1655 | a6568fe2 | Anthony Liguori | } |
1656 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_DIR; |
1657 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1658 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1659 | a6568fe2 | Anthony Liguori | out:
|
1660 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1661 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1662 | a6568fe2 | Anthony Liguori | |
1663 | a6568fe2 | Anthony Liguori | } |
1664 | a6568fe2 | Anthony Liguori | |
1665 | 5e94c103 | M. Mohan Kumar | static void v9fs_open_post_getiounit(V9fsState *s, V9fsOpenState *vs) |
1666 | 5e94c103 | M. Mohan Kumar | { |
1667 | 5e94c103 | M. Mohan Kumar | int err;
|
1668 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
1669 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
1670 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
1671 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
1672 | 5e94c103 | M. Mohan Kumar | } |
1673 | 5e94c103 | M. Mohan Kumar | |
1674 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_open(V9fsState *s, V9fsOpenState *vs, int err) |
1675 | a6568fe2 | Anthony Liguori | { |
1676 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
1677 | a6568fe2 | Anthony Liguori | err = -errno; |
1678 | a6568fe2 | Anthony Liguori | goto out;
|
1679 | a6568fe2 | Anthony Liguori | } |
1680 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
1681 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
1682 | 5e94c103 | M. Mohan Kumar | v9fs_open_post_getiounit(s, vs); |
1683 | 5e94c103 | M. Mohan Kumar | return;
|
1684 | a6568fe2 | Anthony Liguori | out:
|
1685 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1686 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1687 | a6568fe2 | Anthony Liguori | } |
1688 | a6568fe2 | Anthony Liguori | |
1689 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) |
1690 | a6568fe2 | Anthony Liguori | { |
1691 | 771e9d4c | M. Mohan Kumar | int flags;
|
1692 | 771e9d4c | M. Mohan Kumar | |
1693 | a6568fe2 | Anthony Liguori | if (err) {
|
1694 | a6568fe2 | Anthony Liguori | err = -errno; |
1695 | a6568fe2 | Anthony Liguori | goto out;
|
1696 | a6568fe2 | Anthony Liguori | } |
1697 | a6568fe2 | Anthony Liguori | |
1698 | a6568fe2 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1699 | a6568fe2 | Anthony Liguori | |
1700 | a6568fe2 | Anthony Liguori | if (S_ISDIR(vs->stbuf.st_mode)) {
|
1701 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.dir = v9fs_do_opendir(s, &vs->fidp->path); |
1702 | a6568fe2 | Anthony Liguori | v9fs_open_post_opendir(s, vs, err); |
1703 | a6568fe2 | Anthony Liguori | } else {
|
1704 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1705 | 771e9d4c | M. Mohan Kumar | flags = vs->mode; |
1706 | 630c2689 | Sripathi Kodi | flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); |
1707 | 771e9d4c | M. Mohan Kumar | } else {
|
1708 | 771e9d4c | M. Mohan Kumar | flags = omode_to_uflags(vs->mode); |
1709 | 771e9d4c | M. Mohan Kumar | } |
1710 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open(s, &vs->fidp->path, flags); |
1711 | a6568fe2 | Anthony Liguori | v9fs_open_post_open(s, vs, err); |
1712 | a6568fe2 | Anthony Liguori | } |
1713 | a6568fe2 | Anthony Liguori | return;
|
1714 | a6568fe2 | Anthony Liguori | out:
|
1715 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1716 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1717 | 9f107513 | Anthony Liguori | } |
1718 | 9f107513 | Anthony Liguori | |
1719 | 9f107513 | Anthony Liguori | static void v9fs_open(V9fsState *s, V9fsPDU *pdu) |
1720 | a6568fe2 | Anthony Liguori | { |
1721 | a6568fe2 | Anthony Liguori | int32_t fid; |
1722 | a6568fe2 | Anthony Liguori | V9fsOpenState *vs; |
1723 | a6568fe2 | Anthony Liguori | ssize_t err = 0;
|
1724 | a6568fe2 | Anthony Liguori | |
1725 | a6568fe2 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1726 | a6568fe2 | Anthony Liguori | vs->pdu = pdu; |
1727 | a6568fe2 | Anthony Liguori | vs->offset = 7;
|
1728 | 771e9d4c | M. Mohan Kumar | vs->mode = 0;
|
1729 | a6568fe2 | Anthony Liguori | |
1730 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1731 | 771e9d4c | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dd", &fid, &vs->mode);
|
1732 | 771e9d4c | M. Mohan Kumar | } else {
|
1733 | 771e9d4c | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "db", &fid, &vs->mode);
|
1734 | 771e9d4c | M. Mohan Kumar | } |
1735 | a6568fe2 | Anthony Liguori | |
1736 | a6568fe2 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1737 | a6568fe2 | Anthony Liguori | if (vs->fidp == NULL) { |
1738 | a6568fe2 | Anthony Liguori | err = -ENOENT; |
1739 | a6568fe2 | Anthony Liguori | goto out;
|
1740 | a6568fe2 | Anthony Liguori | } |
1741 | a6568fe2 | Anthony Liguori | |
1742 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
1743 | a6568fe2 | Anthony Liguori | |
1744 | a6568fe2 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1745 | a6568fe2 | Anthony Liguori | |
1746 | a6568fe2 | Anthony Liguori | v9fs_open_post_lstat(s, vs, err); |
1747 | a6568fe2 | Anthony Liguori | return;
|
1748 | a6568fe2 | Anthony Liguori | out:
|
1749 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1750 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1751 | a6568fe2 | Anthony Liguori | } |
1752 | a6568fe2 | Anthony Liguori | |
1753 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_post_lcreate(V9fsState *s, V9fsLcreateState *vs, int err) |
1754 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1755 | c1568af5 | Venkateswararao Jujjuri (JV) | if (err == 0) { |
1756 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
1757 | c1568af5 | Venkateswararao Jujjuri (JV) | stat_to_qid(&vs->stbuf, &vs->qid); |
1758 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid,
|
1759 | c1568af5 | Venkateswararao Jujjuri (JV) | &vs->iounit); |
1760 | c1568af5 | Venkateswararao Jujjuri (JV) | err = vs->offset; |
1761 | c1568af5 | Venkateswararao Jujjuri (JV) | } else {
|
1762 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_NONE; |
1763 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1764 | ab03b63d | Sripathi Kodi | if (vs->fidp->fs.fd > 0) { |
1765 | ab03b63d | Sripathi Kodi | close(vs->fidp->fs.fd); |
1766 | ab03b63d | Sripathi Kodi | } |
1767 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1768 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1769 | c1568af5 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
1770 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
1771 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->fullname); |
1772 | c1568af5 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
1773 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1774 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1775 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate_post_get_iounit(V9fsState *s, V9fsLcreateState *vs, |
1776 | c1568af5 | Venkateswararao Jujjuri (JV) | int err)
|
1777 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1778 | c1568af5 | Venkateswararao Jujjuri (JV) | if (err) {
|
1779 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1780 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1781 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1782 | c1568af5 | Venkateswararao Jujjuri (JV) | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1783 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1784 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1785 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_post_lcreate(s, vs, err); |
1786 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1787 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1788 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate_post_do_open2(V9fsState *s, V9fsLcreateState *vs, |
1789 | c1568af5 | Venkateswararao Jujjuri (JV) | int err)
|
1790 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1791 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
1792 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1793 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1794 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1795 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
1796 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->iounit = get_iounit(s, &vs->fullname); |
1797 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_lcreate_post_get_iounit(s, vs, err); |
1798 | c1568af5 | Venkateswararao Jujjuri (JV) | return;
|
1799 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1800 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1801 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_post_lcreate(s, vs, err); |
1802 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1803 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1804 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate(V9fsState *s, V9fsPDU *pdu) |
1805 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1806 | c1568af5 | Venkateswararao Jujjuri (JV) | int32_t dfid, flags, mode; |
1807 | c1568af5 | Venkateswararao Jujjuri (JV) | gid_t gid; |
1808 | c1568af5 | Venkateswararao Jujjuri (JV) | V9fsLcreateState *vs; |
1809 | c1568af5 | Venkateswararao Jujjuri (JV) | ssize_t err = 0;
|
1810 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1811 | c1568af5 | Venkateswararao Jujjuri (JV) | vs = qemu_malloc(sizeof(*vs));
|
1812 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->pdu = pdu; |
1813 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->offset = 7;
|
1814 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1815 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_init(&vs->fullname); |
1816 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1817 | c1568af5 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(vs->pdu, vs->offset, "dsddd", &dfid, &vs->name, &flags,
|
1818 | c1568af5 | Venkateswararao Jujjuri (JV) | &mode, &gid); |
1819 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1820 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->fidp = lookup_fid(s, dfid); |
1821 | c1568af5 | Venkateswararao Jujjuri (JV) | if (vs->fidp == NULL) { |
1822 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1823 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1824 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1825 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1826 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
1827 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->name.data); |
1828 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1829 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open2(s, vs->fullname.data, vs->fidp->uid, |
1830 | c1568af5 | Venkateswararao Jujjuri (JV) | gid, flags, mode); |
1831 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_lcreate_post_do_open2(s, vs, err); |
1832 | c1568af5 | Venkateswararao Jujjuri (JV) | return;
|
1833 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1834 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1835 | c1568af5 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
1836 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
1837 | c1568af5 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
1838 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1839 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1840 | a6568fe2 | Anthony Liguori | static void v9fs_clunk(V9fsState *s, V9fsPDU *pdu) |
1841 | a6568fe2 | Anthony Liguori | { |
1842 | bbd5697b | Anthony Liguori | int32_t fid; |
1843 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1844 | bbd5697b | Anthony Liguori | int err;
|
1845 | bbd5697b | Anthony Liguori | |
1846 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1847 | bbd5697b | Anthony Liguori | |
1848 | bbd5697b | Anthony Liguori | err = free_fid(s, fid); |
1849 | bbd5697b | Anthony Liguori | if (err < 0) { |
1850 | bbd5697b | Anthony Liguori | goto out;
|
1851 | a6568fe2 | Anthony Liguori | } |
1852 | bbd5697b | Anthony Liguori | |
1853 | bbd5697b | Anthony Liguori | offset = 7;
|
1854 | bbd5697b | Anthony Liguori | err = offset; |
1855 | bbd5697b | Anthony Liguori | out:
|
1856 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1857 | 9f107513 | Anthony Liguori | } |
1858 | 9f107513 | Anthony Liguori | |
1859 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *, V9fsReadState *, ssize_t); |
1860 | a9231555 | Anthony Liguori | |
1861 | a9231555 | Anthony Liguori | static void v9fs_read_post_seekdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1862 | a9231555 | Anthony Liguori | { |
1863 | a9231555 | Anthony Liguori | if (err) {
|
1864 | a9231555 | Anthony Liguori | goto out;
|
1865 | a9231555 | Anthony Liguori | } |
1866 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1867 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1868 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1869 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1870 | a9231555 | Anthony Liguori | err = vs->offset; |
1871 | a9231555 | Anthony Liguori | out:
|
1872 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1873 | a9231555 | Anthony Liguori | qemu_free(vs); |
1874 | a9231555 | Anthony Liguori | return;
|
1875 | a9231555 | Anthony Liguori | } |
1876 | a9231555 | Anthony Liguori | |
1877 | a9231555 | Anthony Liguori | static void v9fs_read_post_dir_lstat(V9fsState *s, V9fsReadState *vs, |
1878 | a9231555 | Anthony Liguori | ssize_t err) |
1879 | a9231555 | Anthony Liguori | { |
1880 | a9231555 | Anthony Liguori | if (err) {
|
1881 | a9231555 | Anthony Liguori | err = -errno; |
1882 | a9231555 | Anthony Liguori | goto out;
|
1883 | a9231555 | Anthony Liguori | } |
1884 | a9231555 | Anthony Liguori | err = stat_to_v9stat(s, &vs->name, &vs->stbuf, &vs->v9stat); |
1885 | a9231555 | Anthony Liguori | if (err) {
|
1886 | a9231555 | Anthony Liguori | goto out;
|
1887 | a9231555 | Anthony Liguori | } |
1888 | a9231555 | Anthony Liguori | |
1889 | a9231555 | Anthony Liguori | vs->len = pdu_marshal(vs->pdu, vs->offset + 4 + vs->count, "S", |
1890 | a9231555 | Anthony Liguori | &vs->v9stat); |
1891 | a9231555 | Anthony Liguori | if ((vs->len != (vs->v9stat.size + 2)) || |
1892 | a9231555 | Anthony Liguori | ((vs->count + vs->len) > vs->max_count)) { |
1893 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->dir_pos); |
1894 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1895 | a9231555 | Anthony Liguori | return;
|
1896 | a9231555 | Anthony Liguori | } |
1897 | a9231555 | Anthony Liguori | vs->count += vs->len; |
1898 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1899 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1900 | a9231555 | Anthony Liguori | vs->dir_pos = vs->dent->d_off; |
1901 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
1902 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1903 | a9231555 | Anthony Liguori | return;
|
1904 | a9231555 | Anthony Liguori | out:
|
1905 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->dir_pos); |
1906 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1907 | a9231555 | Anthony Liguori | return;
|
1908 | a9231555 | Anthony Liguori | |
1909 | a9231555 | Anthony Liguori | } |
1910 | a9231555 | Anthony Liguori | |
1911 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1912 | a9231555 | Anthony Liguori | { |
1913 | a9231555 | Anthony Liguori | if (vs->dent) {
|
1914 | a9231555 | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1915 | a9231555 | Anthony Liguori | v9fs_string_init(&vs->name); |
1916 | a9231555 | Anthony Liguori | v9fs_string_sprintf(&vs->name, "%s/%s", vs->fidp->path.data,
|
1917 | a9231555 | Anthony Liguori | vs->dent->d_name); |
1918 | a9231555 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->name, &vs->stbuf); |
1919 | a9231555 | Anthony Liguori | v9fs_read_post_dir_lstat(s, vs, err); |
1920 | a9231555 | Anthony Liguori | return;
|
1921 | a9231555 | Anthony Liguori | } |
1922 | a9231555 | Anthony Liguori | |
1923 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1924 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1925 | a9231555 | Anthony Liguori | err = vs->offset; |
1926 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1927 | a9231555 | Anthony Liguori | qemu_free(vs); |
1928 | a9231555 | Anthony Liguori | return;
|
1929 | a9231555 | Anthony Liguori | } |
1930 | a9231555 | Anthony Liguori | |
1931 | a9231555 | Anthony Liguori | static void v9fs_read_post_telldir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1932 | a9231555 | Anthony Liguori | { |
1933 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
1934 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1935 | a9231555 | Anthony Liguori | return;
|
1936 | a9231555 | Anthony Liguori | } |
1937 | a9231555 | Anthony Liguori | |
1938 | a9231555 | Anthony Liguori | static void v9fs_read_post_rewinddir(V9fsState *s, V9fsReadState *vs, |
1939 | a9231555 | Anthony Liguori | ssize_t err) |
1940 | a9231555 | Anthony Liguori | { |
1941 | d62dbb51 | Aneesh Kumar K.V | vs->dir_pos = v9fs_do_telldir(s, vs->fidp->fs.dir); |
1942 | a9231555 | Anthony Liguori | v9fs_read_post_telldir(s, vs, err); |
1943 | a9231555 | Anthony Liguori | return;
|
1944 | a9231555 | Anthony Liguori | } |
1945 | a9231555 | Anthony Liguori | |
1946 | a9231555 | Anthony Liguori | static void v9fs_read_post_readv(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1947 | a9231555 | Anthony Liguori | { |
1948 | a9231555 | Anthony Liguori | if (err < 0) { |
1949 | a9231555 | Anthony Liguori | /* IO error return the error */
|
1950 | a9231555 | Anthony Liguori | err = -errno; |
1951 | a9231555 | Anthony Liguori | goto out;
|
1952 | a9231555 | Anthony Liguori | } |
1953 | a9231555 | Anthony Liguori | vs->total += vs->len; |
1954 | a9231555 | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1955 | a9231555 | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1956 | a9231555 | Anthony Liguori | do {
|
1957 | a9231555 | Anthony Liguori | if (0) { |
1958 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1959 | a9231555 | Anthony Liguori | } |
1960 | d62dbb51 | Aneesh Kumar K.V | vs->len = v9fs_do_readv(s, vs->fidp->fs.fd, vs->sg, vs->cnt); |
1961 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1962 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1963 | a9231555 | Anthony Liguori | err = -errno; |
1964 | a9231555 | Anthony Liguori | } |
1965 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1966 | a9231555 | Anthony Liguori | return;
|
1967 | a9231555 | Anthony Liguori | } |
1968 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1969 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1970 | a9231555 | Anthony Liguori | err = vs->offset; |
1971 | a9231555 | Anthony Liguori | |
1972 | a9231555 | Anthony Liguori | out:
|
1973 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1974 | a9231555 | Anthony Liguori | qemu_free(vs); |
1975 | a9231555 | Anthony Liguori | } |
1976 | a9231555 | Anthony Liguori | |
1977 | a9231555 | Anthony Liguori | static void v9fs_read_post_lseek(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1978 | a9231555 | Anthony Liguori | { |
1979 | a9231555 | Anthony Liguori | if (err == -1) { |
1980 | a9231555 | Anthony Liguori | err = -errno; |
1981 | a9231555 | Anthony Liguori | goto out;
|
1982 | a9231555 | Anthony Liguori | } |
1983 | a9231555 | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1984 | a9231555 | Anthony Liguori | |
1985 | a9231555 | Anthony Liguori | if (vs->total < vs->count) {
|
1986 | a9231555 | Anthony Liguori | do {
|
1987 | a9231555 | Anthony Liguori | if (0) { |
1988 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1989 | a9231555 | Anthony Liguori | } |
1990 | d62dbb51 | Aneesh Kumar K.V | vs->len = v9fs_do_readv(s, vs->fidp->fs.fd, vs->sg, vs->cnt); |
1991 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1992 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1993 | a9231555 | Anthony Liguori | err = -errno; |
1994 | a9231555 | Anthony Liguori | } |
1995 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1996 | a9231555 | Anthony Liguori | return;
|
1997 | a9231555 | Anthony Liguori | } |
1998 | a9231555 | Anthony Liguori | out:
|
1999 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2000 | a9231555 | Anthony Liguori | qemu_free(vs); |
2001 | a9231555 | Anthony Liguori | } |
2002 | a9231555 | Anthony Liguori | |
2003 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_xattr_read(V9fsState *s, V9fsReadState *vs) |
2004 | fa32ef88 | Aneesh Kumar K.V | { |
2005 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
2006 | fa32ef88 | Aneesh Kumar K.V | int read_count;
|
2007 | fa32ef88 | Aneesh Kumar K.V | int64_t xattr_len; |
2008 | fa32ef88 | Aneesh Kumar K.V | |
2009 | fa32ef88 | Aneesh Kumar K.V | xattr_len = vs->fidp->fs.xattr.len; |
2010 | fa32ef88 | Aneesh Kumar K.V | read_count = xattr_len - vs->off; |
2011 | fa32ef88 | Aneesh Kumar K.V | if (read_count > vs->count) {
|
2012 | fa32ef88 | Aneesh Kumar K.V | read_count = vs->count; |
2013 | fa32ef88 | Aneesh Kumar K.V | } else if (read_count < 0) { |
2014 | fa32ef88 | Aneesh Kumar K.V | /*
|
2015 | fa32ef88 | Aneesh Kumar K.V | * read beyond XATTR value
|
2016 | fa32ef88 | Aneesh Kumar K.V | */
|
2017 | fa32ef88 | Aneesh Kumar K.V | read_count = 0;
|
2018 | fa32ef88 | Aneesh Kumar K.V | } |
2019 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", read_count);
|
2020 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_pack(vs->pdu, vs->offset, |
2021 | fa32ef88 | Aneesh Kumar K.V | ((char *)vs->fidp->fs.xattr.value) + vs->off,
|
2022 | fa32ef88 | Aneesh Kumar K.V | read_count); |
2023 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
2024 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
2025 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
2026 | fa32ef88 | Aneesh Kumar K.V | } |
2027 | fa32ef88 | Aneesh Kumar K.V | |
2028 | 9f107513 | Anthony Liguori | static void v9fs_read(V9fsState *s, V9fsPDU *pdu) |
2029 | 9f107513 | Anthony Liguori | { |
2030 | a9231555 | Anthony Liguori | int32_t fid; |
2031 | a9231555 | Anthony Liguori | V9fsReadState *vs; |
2032 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
2033 | a9231555 | Anthony Liguori | |
2034 | a9231555 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2035 | a9231555 | Anthony Liguori | vs->pdu = pdu; |
2036 | a9231555 | Anthony Liguori | vs->offset = 7;
|
2037 | a9231555 | Anthony Liguori | vs->total = 0;
|
2038 | a9231555 | Anthony Liguori | vs->len = 0;
|
2039 | a9231555 | Anthony Liguori | vs->count = 0;
|
2040 | a9231555 | Anthony Liguori | |
2041 | a9231555 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqd", &fid, &vs->off, &vs->count);
|
2042 | a9231555 | Anthony Liguori | |
2043 | a9231555 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2044 | a9231555 | Anthony Liguori | if (vs->fidp == NULL) { |
2045 | a9231555 | Anthony Liguori | err = -EINVAL; |
2046 | a9231555 | Anthony Liguori | goto out;
|
2047 | a9231555 | Anthony Liguori | } |
2048 | a9231555 | Anthony Liguori | |
2049 | fa32ef88 | Aneesh Kumar K.V | if (vs->fidp->fid_type == P9_FID_DIR) {
|
2050 | a9231555 | Anthony Liguori | vs->max_count = vs->count; |
2051 | a9231555 | Anthony Liguori | vs->count = 0;
|
2052 | a9231555 | Anthony Liguori | if (vs->off == 0) { |
2053 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_rewinddir(s, vs->fidp->fs.dir); |
2054 | a9231555 | Anthony Liguori | } |
2055 | a9231555 | Anthony Liguori | v9fs_read_post_rewinddir(s, vs, err); |
2056 | a9231555 | Anthony Liguori | return;
|
2057 | fa32ef88 | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_FILE) { |
2058 | a9231555 | Anthony Liguori | vs->sg = vs->iov; |
2059 | a9231555 | Anthony Liguori | pdu_marshal(vs->pdu, vs->offset + 4, "v", vs->sg, &vs->cnt); |
2060 | d62dbb51 | Aneesh Kumar K.V | err = v9fs_do_lseek(s, vs->fidp->fs.fd, vs->off, SEEK_SET); |
2061 | a9231555 | Anthony Liguori | v9fs_read_post_lseek(s, vs, err); |
2062 | a9231555 | Anthony Liguori | return;
|
2063 | fa32ef88 | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_XATTR) { |
2064 | fa32ef88 | Aneesh Kumar K.V | v9fs_xattr_read(s, vs); |
2065 | fa32ef88 | Aneesh Kumar K.V | return;
|
2066 | a9231555 | Anthony Liguori | } else {
|
2067 | a9231555 | Anthony Liguori | err = -EINVAL; |
2068 | 9f107513 | Anthony Liguori | } |
2069 | a9231555 | Anthony Liguori | out:
|
2070 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
2071 | a9231555 | Anthony Liguori | qemu_free(vs); |
2072 | 9f107513 | Anthony Liguori | } |
2073 | 9f107513 | Anthony Liguori | |
2074 | c18e2f94 | Sripathi Kodi | typedef struct V9fsReadDirState { |
2075 | c18e2f94 | Sripathi Kodi | V9fsPDU *pdu; |
2076 | c18e2f94 | Sripathi Kodi | V9fsFidState *fidp; |
2077 | c18e2f94 | Sripathi Kodi | V9fsQID qid; |
2078 | c18e2f94 | Sripathi Kodi | off_t saved_dir_pos; |
2079 | c18e2f94 | Sripathi Kodi | struct dirent *dent;
|
2080 | c18e2f94 | Sripathi Kodi | int32_t count; |
2081 | c18e2f94 | Sripathi Kodi | int32_t max_count; |
2082 | c18e2f94 | Sripathi Kodi | size_t offset; |
2083 | c18e2f94 | Sripathi Kodi | int64_t initial_offset; |
2084 | c18e2f94 | Sripathi Kodi | V9fsString name; |
2085 | c18e2f94 | Sripathi Kodi | } V9fsReadDirState; |
2086 | c18e2f94 | Sripathi Kodi | |
2087 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_seekdir(V9fsState *s, V9fsReadDirState *vs) |
2088 | c18e2f94 | Sripathi Kodi | { |
2089 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
2090 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
2091 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
2092 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2093 | c18e2f94 | Sripathi Kodi | return;
|
2094 | c18e2f94 | Sripathi Kodi | } |
2095 | c18e2f94 | Sripathi Kodi | |
2096 | c18e2f94 | Sripathi Kodi | /* Size of each dirent on the wire: size of qid (13) + size of offset (8)
|
2097 | c18e2f94 | Sripathi Kodi | * size of type (1) + size of name.size (2) + strlen(name.data)
|
2098 | c18e2f94 | Sripathi Kodi | */
|
2099 | c18e2f94 | Sripathi Kodi | #define V9_READDIR_DATA_SZ (24 + strlen(vs->name.data)) |
2100 | c18e2f94 | Sripathi Kodi | |
2101 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_readdir(V9fsState *s, V9fsReadDirState *vs) |
2102 | c18e2f94 | Sripathi Kodi | { |
2103 | c18e2f94 | Sripathi Kodi | int len;
|
2104 | c18e2f94 | Sripathi Kodi | size_t size; |
2105 | c18e2f94 | Sripathi Kodi | |
2106 | c18e2f94 | Sripathi Kodi | if (vs->dent) {
|
2107 | c18e2f94 | Sripathi Kodi | v9fs_string_init(&vs->name); |
2108 | c18e2f94 | Sripathi Kodi | v9fs_string_sprintf(&vs->name, "%s", vs->dent->d_name);
|
2109 | c18e2f94 | Sripathi Kodi | |
2110 | c18e2f94 | Sripathi Kodi | if ((vs->count + V9_READDIR_DATA_SZ) > vs->max_count) {
|
2111 | c18e2f94 | Sripathi Kodi | /* Ran out of buffer. Set dir back to old position and return */
|
2112 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->saved_dir_pos); |
2113 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_seekdir(s, vs); |
2114 | c18e2f94 | Sripathi Kodi | return;
|
2115 | c18e2f94 | Sripathi Kodi | } |
2116 | c18e2f94 | Sripathi Kodi | |
2117 | c18e2f94 | Sripathi Kodi | /* Fill up just the path field of qid because the client uses
|
2118 | c18e2f94 | Sripathi Kodi | * only that. To fill the entire qid structure we will have
|
2119 | c18e2f94 | Sripathi Kodi | * to stat each dirent found, which is expensive
|
2120 | c18e2f94 | Sripathi Kodi | */
|
2121 | c18e2f94 | Sripathi Kodi | size = MIN(sizeof(vs->dent->d_ino), sizeof(vs->qid.path)); |
2122 | c18e2f94 | Sripathi Kodi | memcpy(&vs->qid.path, &vs->dent->d_ino, size); |
2123 | c18e2f94 | Sripathi Kodi | /* Fill the other fields with dummy values */
|
2124 | c18e2f94 | Sripathi Kodi | vs->qid.type = 0;
|
2125 | c18e2f94 | Sripathi Kodi | vs->qid.version = 0;
|
2126 | c18e2f94 | Sripathi Kodi | |
2127 | c18e2f94 | Sripathi Kodi | len = pdu_marshal(vs->pdu, vs->offset+4+vs->count, "Qqbs", |
2128 | c18e2f94 | Sripathi Kodi | &vs->qid, vs->dent->d_off, |
2129 | c18e2f94 | Sripathi Kodi | vs->dent->d_type, &vs->name); |
2130 | c18e2f94 | Sripathi Kodi | vs->count += len; |
2131 | c18e2f94 | Sripathi Kodi | v9fs_string_free(&vs->name); |
2132 | c18e2f94 | Sripathi Kodi | vs->saved_dir_pos = vs->dent->d_off; |
2133 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
2134 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
2135 | c18e2f94 | Sripathi Kodi | return;
|
2136 | c18e2f94 | Sripathi Kodi | } |
2137 | c18e2f94 | Sripathi Kodi | |
2138 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
2139 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
2140 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
2141 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2142 | c18e2f94 | Sripathi Kodi | return;
|
2143 | c18e2f94 | Sripathi Kodi | } |
2144 | c18e2f94 | Sripathi Kodi | |
2145 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_telldir(V9fsState *s, V9fsReadDirState *vs) |
2146 | c18e2f94 | Sripathi Kodi | { |
2147 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
2148 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
2149 | c18e2f94 | Sripathi Kodi | return;
|
2150 | c18e2f94 | Sripathi Kodi | } |
2151 | c18e2f94 | Sripathi Kodi | |
2152 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_setdir(V9fsState *s, V9fsReadDirState *vs) |
2153 | c18e2f94 | Sripathi Kodi | { |
2154 | d62dbb51 | Aneesh Kumar K.V | vs->saved_dir_pos = v9fs_do_telldir(s, vs->fidp->fs.dir); |
2155 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_telldir(s, vs); |
2156 | c18e2f94 | Sripathi Kodi | return;
|
2157 | c18e2f94 | Sripathi Kodi | } |
2158 | c18e2f94 | Sripathi Kodi | |
2159 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir(V9fsState *s, V9fsPDU *pdu) |
2160 | c18e2f94 | Sripathi Kodi | { |
2161 | c18e2f94 | Sripathi Kodi | int32_t fid; |
2162 | c18e2f94 | Sripathi Kodi | V9fsReadDirState *vs; |
2163 | c18e2f94 | Sripathi Kodi | ssize_t err = 0;
|
2164 | c18e2f94 | Sripathi Kodi | size_t offset = 7;
|
2165 | c18e2f94 | Sripathi Kodi | |
2166 | c18e2f94 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
2167 | c18e2f94 | Sripathi Kodi | vs->pdu = pdu; |
2168 | c18e2f94 | Sripathi Kodi | vs->offset = 7;
|
2169 | c18e2f94 | Sripathi Kodi | vs->count = 0;
|
2170 | c18e2f94 | Sripathi Kodi | |
2171 | c18e2f94 | Sripathi Kodi | pdu_unmarshal(vs->pdu, offset, "dqd", &fid, &vs->initial_offset,
|
2172 | c18e2f94 | Sripathi Kodi | &vs->max_count); |
2173 | c18e2f94 | Sripathi Kodi | |
2174 | c18e2f94 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
2175 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp == NULL || !(vs->fidp->fs.dir)) { |
2176 | c18e2f94 | Sripathi Kodi | err = -EINVAL; |
2177 | c18e2f94 | Sripathi Kodi | goto out;
|
2178 | c18e2f94 | Sripathi Kodi | } |
2179 | c18e2f94 | Sripathi Kodi | |
2180 | c18e2f94 | Sripathi Kodi | if (vs->initial_offset == 0) { |
2181 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_rewinddir(s, vs->fidp->fs.dir); |
2182 | c18e2f94 | Sripathi Kodi | } else {
|
2183 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->initial_offset); |
2184 | c18e2f94 | Sripathi Kodi | } |
2185 | c18e2f94 | Sripathi Kodi | |
2186 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_setdir(s, vs); |
2187 | c18e2f94 | Sripathi Kodi | return;
|
2188 | c18e2f94 | Sripathi Kodi | |
2189 | c18e2f94 | Sripathi Kodi | out:
|
2190 | c18e2f94 | Sripathi Kodi | complete_pdu(s, pdu, err); |
2191 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2192 | c18e2f94 | Sripathi Kodi | return;
|
2193 | c18e2f94 | Sripathi Kodi | } |
2194 | c18e2f94 | Sripathi Kodi | |
2195 | 8449360c | Anthony Liguori | static void v9fs_write_post_writev(V9fsState *s, V9fsWriteState *vs, |
2196 | 8449360c | Anthony Liguori | ssize_t err) |
2197 | 8449360c | Anthony Liguori | { |
2198 | 8449360c | Anthony Liguori | if (err < 0) { |
2199 | 8449360c | Anthony Liguori | /* IO error return the error */
|
2200 | 8449360c | Anthony Liguori | err = -errno; |
2201 | 8449360c | Anthony Liguori | goto out;
|
2202 | 8449360c | Anthony Liguori | } |
2203 | 8449360c | Anthony Liguori | vs->total += vs->len; |
2204 | 8449360c | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
2205 | 8449360c | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
2206 | 8449360c | Anthony Liguori | do {
|
2207 | 8449360c | Anthony Liguori | if (0) { |
2208 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2209 | 8449360c | Anthony Liguori | } |
2210 | d62dbb51 | Aneesh Kumar K.V | vs->len = v9fs_do_writev(s, vs->fidp->fs.fd, vs->sg, vs->cnt); |
2211 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2212 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
2213 | 8449360c | Anthony Liguori | err = -errno; |
2214 | 8449360c | Anthony Liguori | } |
2215 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
2216 | 8449360c | Anthony Liguori | return;
|
2217 | 8449360c | Anthony Liguori | } |
2218 | 8449360c | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
2219 | 8449360c | Anthony Liguori | |
2220 | 8449360c | Anthony Liguori | err = vs->offset; |
2221 | 8449360c | Anthony Liguori | out:
|
2222 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2223 | 8449360c | Anthony Liguori | qemu_free(vs); |
2224 | 8449360c | Anthony Liguori | } |
2225 | 8449360c | Anthony Liguori | |
2226 | 8449360c | Anthony Liguori | static void v9fs_write_post_lseek(V9fsState *s, V9fsWriteState *vs, ssize_t err) |
2227 | 8449360c | Anthony Liguori | { |
2228 | 8449360c | Anthony Liguori | if (err == -1) { |
2229 | 8449360c | Anthony Liguori | err = -errno; |
2230 | 8449360c | Anthony Liguori | goto out;
|
2231 | 8449360c | Anthony Liguori | } |
2232 | 8449360c | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
2233 | 8449360c | Anthony Liguori | |
2234 | 8449360c | Anthony Liguori | if (vs->total < vs->count) {
|
2235 | 8449360c | Anthony Liguori | do {
|
2236 | 8449360c | Anthony Liguori | if (0) { |
2237 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2238 | 8449360c | Anthony Liguori | } |
2239 | d62dbb51 | Aneesh Kumar K.V | vs->len = v9fs_do_writev(s, vs->fidp->fs.fd, vs->sg, vs->cnt); |
2240 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2241 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
2242 | 8449360c | Anthony Liguori | err = -errno; |
2243 | 8449360c | Anthony Liguori | } |
2244 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
2245 | 8449360c | Anthony Liguori | return;
|
2246 | 8449360c | Anthony Liguori | } |
2247 | 8449360c | Anthony Liguori | |
2248 | 8449360c | Anthony Liguori | out:
|
2249 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2250 | 8449360c | Anthony Liguori | qemu_free(vs); |
2251 | 8449360c | Anthony Liguori | } |
2252 | 8449360c | Anthony Liguori | |
2253 | 10b468bd | Aneesh Kumar K.V | static void v9fs_xattr_write(V9fsState *s, V9fsWriteState *vs) |
2254 | 10b468bd | Aneesh Kumar K.V | { |
2255 | 10b468bd | Aneesh Kumar K.V | int i, to_copy;
|
2256 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
2257 | 10b468bd | Aneesh Kumar K.V | int write_count;
|
2258 | 10b468bd | Aneesh Kumar K.V | int64_t xattr_len; |
2259 | 10b468bd | Aneesh Kumar K.V | |
2260 | 10b468bd | Aneesh Kumar K.V | xattr_len = vs->fidp->fs.xattr.len; |
2261 | 10b468bd | Aneesh Kumar K.V | write_count = xattr_len - vs->off; |
2262 | 10b468bd | Aneesh Kumar K.V | if (write_count > vs->count) {
|
2263 | 10b468bd | Aneesh Kumar K.V | write_count = vs->count; |
2264 | 10b468bd | Aneesh Kumar K.V | } else if (write_count < 0) { |
2265 | 10b468bd | Aneesh Kumar K.V | /*
|
2266 | 10b468bd | Aneesh Kumar K.V | * write beyond XATTR value len specified in
|
2267 | 10b468bd | Aneesh Kumar K.V | * xattrcreate
|
2268 | 10b468bd | Aneesh Kumar K.V | */
|
2269 | 10b468bd | Aneesh Kumar K.V | err = -ENOSPC; |
2270 | 10b468bd | Aneesh Kumar K.V | goto out;
|
2271 | 10b468bd | Aneesh Kumar K.V | } |
2272 | 10b468bd | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", write_count);
|
2273 | 10b468bd | Aneesh Kumar K.V | err = vs->offset; |
2274 | 10b468bd | Aneesh Kumar K.V | vs->fidp->fs.xattr.copied_len += write_count; |
2275 | 10b468bd | Aneesh Kumar K.V | /*
|
2276 | 10b468bd | Aneesh Kumar K.V | * Now copy the content from sg list
|
2277 | 10b468bd | Aneesh Kumar K.V | */
|
2278 | 10b468bd | Aneesh Kumar K.V | for (i = 0; i < vs->cnt; i++) { |
2279 | 10b468bd | Aneesh Kumar K.V | if (write_count > vs->sg[i].iov_len) {
|
2280 | 10b468bd | Aneesh Kumar K.V | to_copy = vs->sg[i].iov_len; |
2281 | 10b468bd | Aneesh Kumar K.V | } else {
|
2282 | 10b468bd | Aneesh Kumar K.V | to_copy = write_count; |
2283 | 10b468bd | Aneesh Kumar K.V | } |
2284 | 10b468bd | Aneesh Kumar K.V | memcpy((char *)vs->fidp->fs.xattr.value + vs->off,
|
2285 | 10b468bd | Aneesh Kumar K.V | vs->sg[i].iov_base, to_copy); |
2286 | 10b468bd | Aneesh Kumar K.V | /* updating vs->off since we are not using below */
|
2287 | 10b468bd | Aneesh Kumar K.V | vs->off += to_copy; |
2288 | 10b468bd | Aneesh Kumar K.V | write_count -= to_copy; |
2289 | 10b468bd | Aneesh Kumar K.V | } |
2290 | 10b468bd | Aneesh Kumar K.V | out:
|
2291 | 10b468bd | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
2292 | 10b468bd | Aneesh Kumar K.V | qemu_free(vs); |
2293 | 10b468bd | Aneesh Kumar K.V | } |
2294 | 10b468bd | Aneesh Kumar K.V | |
2295 | 9f107513 | Anthony Liguori | static void v9fs_write(V9fsState *s, V9fsPDU *pdu) |
2296 | 9f107513 | Anthony Liguori | { |
2297 | 8449360c | Anthony Liguori | int32_t fid; |
2298 | 8449360c | Anthony Liguori | V9fsWriteState *vs; |
2299 | 8449360c | Anthony Liguori | ssize_t err; |
2300 | 8449360c | Anthony Liguori | |
2301 | 8449360c | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2302 | 8449360c | Anthony Liguori | |
2303 | 8449360c | Anthony Liguori | vs->pdu = pdu; |
2304 | 8449360c | Anthony Liguori | vs->offset = 7;
|
2305 | 8449360c | Anthony Liguori | vs->sg = vs->iov; |
2306 | 8449360c | Anthony Liguori | vs->total = 0;
|
2307 | 8449360c | Anthony Liguori | vs->len = 0;
|
2308 | 8449360c | Anthony Liguori | |
2309 | 8449360c | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqdv", &fid, &vs->off, &vs->count,
|
2310 | 10b468bd | Aneesh Kumar K.V | vs->sg, &vs->cnt); |
2311 | 8449360c | Anthony Liguori | |
2312 | 8449360c | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2313 | 8449360c | Anthony Liguori | if (vs->fidp == NULL) { |
2314 | 8449360c | Anthony Liguori | err = -EINVAL; |
2315 | 8449360c | Anthony Liguori | goto out;
|
2316 | 9f107513 | Anthony Liguori | } |
2317 | 8449360c | Anthony Liguori | |
2318 | 10b468bd | Aneesh Kumar K.V | if (vs->fidp->fid_type == P9_FID_FILE) {
|
2319 | 10b468bd | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
2320 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
2321 | 10b468bd | Aneesh Kumar K.V | goto out;
|
2322 | 10b468bd | Aneesh Kumar K.V | } |
2323 | 10b468bd | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_XATTR) { |
2324 | 10b468bd | Aneesh Kumar K.V | /*
|
2325 | 10b468bd | Aneesh Kumar K.V | * setxattr operation
|
2326 | 10b468bd | Aneesh Kumar K.V | */
|
2327 | 10b468bd | Aneesh Kumar K.V | v9fs_xattr_write(s, vs); |
2328 | 10b468bd | Aneesh Kumar K.V | return;
|
2329 | 10b468bd | Aneesh Kumar K.V | } else {
|
2330 | 8449360c | Anthony Liguori | err = -EINVAL; |
2331 | 8449360c | Anthony Liguori | goto out;
|
2332 | 8449360c | Anthony Liguori | } |
2333 | d62dbb51 | Aneesh Kumar K.V | err = v9fs_do_lseek(s, vs->fidp->fs.fd, vs->off, SEEK_SET); |
2334 | 8449360c | Anthony Liguori | |
2335 | 8449360c | Anthony Liguori | v9fs_write_post_lseek(s, vs, err); |
2336 | 8449360c | Anthony Liguori | return;
|
2337 | 8449360c | Anthony Liguori | |
2338 | 8449360c | Anthony Liguori | out:
|
2339 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2340 | 8449360c | Anthony Liguori | qemu_free(vs); |
2341 | 9f107513 | Anthony Liguori | } |
2342 | 9f107513 | Anthony Liguori | |
2343 | 5e94c103 | M. Mohan Kumar | static void v9fs_create_post_getiounit(V9fsState *s, V9fsCreateState *vs) |
2344 | c494dd6f | Anthony Liguori | { |
2345 | 5e94c103 | M. Mohan Kumar | int err;
|
2346 | 5e94c103 | M. Mohan Kumar | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
2347 | 5e94c103 | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
2348 | c494dd6f | Anthony Liguori | |
2349 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
2350 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
2351 | c494dd6f | Anthony Liguori | |
2352 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2353 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2354 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->extension); |
2355 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
2356 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
2357 | 5e94c103 | M. Mohan Kumar | } |
2358 | 5e94c103 | M. Mohan Kumar | |
2359 | 5e94c103 | M. Mohan Kumar | static void v9fs_post_create(V9fsState *s, V9fsCreateState *vs, int err) |
2360 | 5e94c103 | M. Mohan Kumar | { |
2361 | 5e94c103 | M. Mohan Kumar | if (err == 0) { |
2362 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
2363 | 5e94c103 | M. Mohan Kumar | v9fs_create_post_getiounit(s, vs); |
2364 | 5e94c103 | M. Mohan Kumar | return;
|
2365 | c494dd6f | Anthony Liguori | } |
2366 | c494dd6f | Anthony Liguori | |
2367 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2368 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2369 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2370 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->fullname); |
2371 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2372 | c494dd6f | Anthony Liguori | } |
2373 | c494dd6f | Anthony Liguori | |
2374 | c494dd6f | Anthony Liguori | static void v9fs_create_post_perms(V9fsState *s, V9fsCreateState *vs, int err) |
2375 | c494dd6f | Anthony Liguori | { |
2376 | c494dd6f | Anthony Liguori | if (err) {
|
2377 | c494dd6f | Anthony Liguori | err = -errno; |
2378 | c494dd6f | Anthony Liguori | } |
2379 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2380 | c494dd6f | Anthony Liguori | } |
2381 | c494dd6f | Anthony Liguori | |
2382 | c494dd6f | Anthony Liguori | static void v9fs_create_post_opendir(V9fsState *s, V9fsCreateState *vs, |
2383 | c494dd6f | Anthony Liguori | int err)
|
2384 | c494dd6f | Anthony Liguori | { |
2385 | d62dbb51 | Aneesh Kumar K.V | if (!vs->fidp->fs.dir) {
|
2386 | c494dd6f | Anthony Liguori | err = -errno; |
2387 | c494dd6f | Anthony Liguori | } |
2388 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_DIR; |
2389 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2390 | c494dd6f | Anthony Liguori | } |
2391 | c494dd6f | Anthony Liguori | |
2392 | c494dd6f | Anthony Liguori | static void v9fs_create_post_dir_lstat(V9fsState *s, V9fsCreateState *vs, |
2393 | c494dd6f | Anthony Liguori | int err)
|
2394 | c494dd6f | Anthony Liguori | { |
2395 | c494dd6f | Anthony Liguori | if (err) {
|
2396 | c494dd6f | Anthony Liguori | err = -errno; |
2397 | c494dd6f | Anthony Liguori | goto out;
|
2398 | c494dd6f | Anthony Liguori | } |
2399 | c494dd6f | Anthony Liguori | |
2400 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.dir = v9fs_do_opendir(s, &vs->fullname); |
2401 | c494dd6f | Anthony Liguori | v9fs_create_post_opendir(s, vs, err); |
2402 | c494dd6f | Anthony Liguori | return;
|
2403 | c494dd6f | Anthony Liguori | |
2404 | c494dd6f | Anthony Liguori | out:
|
2405 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2406 | c494dd6f | Anthony Liguori | } |
2407 | c494dd6f | Anthony Liguori | |
2408 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mkdir(V9fsState *s, V9fsCreateState *vs, int err) |
2409 | c494dd6f | Anthony Liguori | { |
2410 | c494dd6f | Anthony Liguori | if (err) {
|
2411 | c494dd6f | Anthony Liguori | err = -errno; |
2412 | c494dd6f | Anthony Liguori | goto out;
|
2413 | c494dd6f | Anthony Liguori | } |
2414 | c494dd6f | Anthony Liguori | |
2415 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2416 | c494dd6f | Anthony Liguori | v9fs_create_post_dir_lstat(s, vs, err); |
2417 | c494dd6f | Anthony Liguori | return;
|
2418 | c494dd6f | Anthony Liguori | |
2419 | c494dd6f | Anthony Liguori | out:
|
2420 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2421 | c494dd6f | Anthony Liguori | } |
2422 | c494dd6f | Anthony Liguori | |
2423 | c494dd6f | Anthony Liguori | static void v9fs_create_post_fstat(V9fsState *s, V9fsCreateState *vs, int err) |
2424 | c494dd6f | Anthony Liguori | { |
2425 | c494dd6f | Anthony Liguori | if (err) {
|
2426 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_NONE; |
2427 | d62dbb51 | Aneesh Kumar K.V | close(vs->fidp->fs.fd); |
2428 | c494dd6f | Anthony Liguori | err = -errno; |
2429 | c494dd6f | Anthony Liguori | } |
2430 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2431 | c494dd6f | Anthony Liguori | return;
|
2432 | c494dd6f | Anthony Liguori | } |
2433 | c494dd6f | Anthony Liguori | |
2434 | c494dd6f | Anthony Liguori | static void v9fs_create_post_open2(V9fsState *s, V9fsCreateState *vs, int err) |
2435 | c494dd6f | Anthony Liguori | { |
2436 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
2437 | c494dd6f | Anthony Liguori | err = -errno; |
2438 | c494dd6f | Anthony Liguori | goto out;
|
2439 | c494dd6f | Anthony Liguori | } |
2440 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
2441 | d62dbb51 | Aneesh Kumar K.V | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
2442 | c494dd6f | Anthony Liguori | v9fs_create_post_fstat(s, vs, err); |
2443 | c494dd6f | Anthony Liguori | |
2444 | c494dd6f | Anthony Liguori | return;
|
2445 | c494dd6f | Anthony Liguori | |
2446 | c494dd6f | Anthony Liguori | out:
|
2447 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2448 | c494dd6f | Anthony Liguori | |
2449 | c494dd6f | Anthony Liguori | } |
2450 | c494dd6f | Anthony Liguori | |
2451 | c494dd6f | Anthony Liguori | static void v9fs_create_post_lstat(V9fsState *s, V9fsCreateState *vs, int err) |
2452 | c494dd6f | Anthony Liguori | { |
2453 | c494dd6f | Anthony Liguori | |
2454 | c494dd6f | Anthony Liguori | if (err == 0 || errno != ENOENT) { |
2455 | c494dd6f | Anthony Liguori | err = -errno; |
2456 | c494dd6f | Anthony Liguori | goto out;
|
2457 | c494dd6f | Anthony Liguori | } |
2458 | c494dd6f | Anthony Liguori | |
2459 | c494dd6f | Anthony Liguori | if (vs->perm & P9_STAT_MODE_DIR) {
|
2460 | b67592ea | M. Mohan Kumar | err = v9fs_do_mkdir(s, vs->fullname.data, vs->perm & 0777,
|
2461 | b67592ea | M. Mohan Kumar | vs->fidp->uid, -1);
|
2462 | c494dd6f | Anthony Liguori | v9fs_create_post_mkdir(s, vs, err); |
2463 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SYMLINK) { |
2464 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_symlink(s, vs->fidp, vs->extension.data, |
2465 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->fullname.data, -1);
|
2466 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2467 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_LINK) { |
2468 | c494dd6f | Anthony Liguori | int32_t nfid = atoi(vs->extension.data); |
2469 | c494dd6f | Anthony Liguori | V9fsFidState *nfidp = lookup_fid(s, nfid); |
2470 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
2471 | c494dd6f | Anthony Liguori | err = -errno; |
2472 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2473 | c494dd6f | Anthony Liguori | } |
2474 | c494dd6f | Anthony Liguori | err = v9fs_do_link(s, &nfidp->path, &vs->fullname); |
2475 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2476 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_DEVICE) { |
2477 | c494dd6f | Anthony Liguori | char ctype;
|
2478 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
2479 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
2480 | c494dd6f | Anthony Liguori | |
2481 | c494dd6f | Anthony Liguori | if (sscanf(vs->extension.data, "%c %u %u", &ctype, &major, |
2482 | c494dd6f | Anthony Liguori | &minor) != 3) {
|
2483 | c494dd6f | Anthony Liguori | err = -errno; |
2484 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2485 | c494dd6f | Anthony Liguori | } |
2486 | c494dd6f | Anthony Liguori | |
2487 | c494dd6f | Anthony Liguori | switch (ctype) {
|
2488 | c494dd6f | Anthony Liguori | case 'c': |
2489 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
2490 | c494dd6f | Anthony Liguori | break;
|
2491 | c494dd6f | Anthony Liguori | case 'b': |
2492 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
2493 | c494dd6f | Anthony Liguori | break;
|
2494 | c494dd6f | Anthony Liguori | default:
|
2495 | c494dd6f | Anthony Liguori | err = -EIO; |
2496 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2497 | c494dd6f | Anthony Liguori | } |
2498 | c494dd6f | Anthony Liguori | |
2499 | c494dd6f | Anthony Liguori | nmode |= vs->perm & 0777;
|
2500 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, nmode, |
2501 | 5268cecc | M. Mohan Kumar | makedev(major, minor), vs->fidp->uid, -1);
|
2502 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2503 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_NAMED_PIPE) { |
2504 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, S_IFIFO | (vs->perm & 0777),
|
2505 | 5268cecc | M. Mohan Kumar | 0, vs->fidp->uid, -1); |
2506 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2507 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SOCKET) { |
2508 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, S_IFSOCK | (vs->perm & 0777),
|
2509 | 5268cecc | M. Mohan Kumar | 0, vs->fidp->uid, -1); |
2510 | 63729c36 | Venkateswararao Jujjuri (JV) | v9fs_post_create(s, vs, err); |
2511 | c494dd6f | Anthony Liguori | } else {
|
2512 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open2(s, vs->fullname.data, vs->fidp->uid, |
2513 | c1568af5 | Venkateswararao Jujjuri (JV) | -1, omode_to_uflags(vs->mode)|O_CREAT, vs->perm);
|
2514 | c1568af5 | Venkateswararao Jujjuri (JV) | |
2515 | c494dd6f | Anthony Liguori | v9fs_create_post_open2(s, vs, err); |
2516 | c494dd6f | Anthony Liguori | } |
2517 | c494dd6f | Anthony Liguori | |
2518 | c494dd6f | Anthony Liguori | return;
|
2519 | c494dd6f | Anthony Liguori | |
2520 | c494dd6f | Anthony Liguori | out:
|
2521 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2522 | c494dd6f | Anthony Liguori | } |
2523 | c494dd6f | Anthony Liguori | |
2524 | 9f107513 | Anthony Liguori | static void v9fs_create(V9fsState *s, V9fsPDU *pdu) |
2525 | 9f107513 | Anthony Liguori | { |
2526 | c494dd6f | Anthony Liguori | int32_t fid; |
2527 | c494dd6f | Anthony Liguori | V9fsCreateState *vs; |
2528 | c494dd6f | Anthony Liguori | int err = 0; |
2529 | c494dd6f | Anthony Liguori | |
2530 | c494dd6f | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2531 | c494dd6f | Anthony Liguori | vs->pdu = pdu; |
2532 | c494dd6f | Anthony Liguori | vs->offset = 7;
|
2533 | c494dd6f | Anthony Liguori | |
2534 | c494dd6f | Anthony Liguori | v9fs_string_init(&vs->fullname); |
2535 | c494dd6f | Anthony Liguori | |
2536 | c494dd6f | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dsdbs", &fid, &vs->name,
|
2537 | c494dd6f | Anthony Liguori | &vs->perm, &vs->mode, &vs->extension); |
2538 | c494dd6f | Anthony Liguori | |
2539 | c494dd6f | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2540 | c494dd6f | Anthony Liguori | if (vs->fidp == NULL) { |
2541 | c494dd6f | Anthony Liguori | err = -EINVAL; |
2542 | c494dd6f | Anthony Liguori | goto out;
|
2543 | 9f107513 | Anthony Liguori | } |
2544 | c494dd6f | Anthony Liguori | |
2545 | c494dd6f | Anthony Liguori | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
2546 | c494dd6f | Anthony Liguori | vs->name.data); |
2547 | c494dd6f | Anthony Liguori | |
2548 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2549 | c494dd6f | Anthony Liguori | v9fs_create_post_lstat(s, vs, err); |
2550 | c494dd6f | Anthony Liguori | return;
|
2551 | c494dd6f | Anthony Liguori | |
2552 | c494dd6f | Anthony Liguori | out:
|
2553 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2554 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2555 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2556 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2557 | 9f107513 | Anthony Liguori | } |
2558 | 9f107513 | Anthony Liguori | |
2559 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_post_symlink(V9fsState *s, V9fsSymlinkState *vs, int err) |
2560 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2561 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (err == 0) { |
2562 | 08c60fc9 | Venkateswararao Jujjuri (JV) | stat_to_qid(&vs->stbuf, &vs->qid); |
2563 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
2564 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = vs->offset; |
2565 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } else {
|
2566 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -errno; |
2567 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2568 | 08c60fc9 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
2569 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
2570 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->symname); |
2571 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->fullname); |
2572 | 08c60fc9 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
2573 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2574 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2575 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_symlink_post_do_symlink(V9fsState *s, V9fsSymlinkState *vs, |
2576 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err)
|
2577 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2578 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (err) {
|
2579 | 08c60fc9 | Venkateswararao Jujjuri (JV) | goto out;
|
2580 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2581 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2582 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2583 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_post_symlink(s, vs, err); |
2584 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2585 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2586 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_symlink(V9fsState *s, V9fsPDU *pdu) |
2587 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2588 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int32_t dfid; |
2589 | 08c60fc9 | Venkateswararao Jujjuri (JV) | V9fsSymlinkState *vs; |
2590 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err = 0; |
2591 | 08c60fc9 | Venkateswararao Jujjuri (JV) | gid_t gid; |
2592 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2593 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs = qemu_malloc(sizeof(*vs));
|
2594 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->pdu = pdu; |
2595 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->offset = 7;
|
2596 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2597 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_init(&vs->fullname); |
2598 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2599 | 08c60fc9 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(vs->pdu, vs->offset, "dssd", &dfid, &vs->name,
|
2600 | 08c60fc9 | Venkateswararao Jujjuri (JV) | &vs->symname, &gid); |
2601 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2602 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->dfidp = lookup_fid(s, dfid); |
2603 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (vs->dfidp == NULL) { |
2604 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -EINVAL; |
2605 | 08c60fc9 | Venkateswararao Jujjuri (JV) | goto out;
|
2606 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2607 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2608 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->dfidp->path.data,
|
2609 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->name.data); |
2610 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_symlink(s, vs->dfidp, vs->symname.data, |
2611 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->fullname.data, gid); |
2612 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_symlink_post_do_symlink(s, vs, err); |
2613 | 08c60fc9 | Venkateswararao Jujjuri (JV) | return;
|
2614 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2615 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2616 | 08c60fc9 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
2617 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
2618 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->symname); |
2619 | 08c60fc9 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
2620 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2621 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2622 | 9f107513 | Anthony Liguori | static void v9fs_flush(V9fsState *s, V9fsPDU *pdu) |
2623 | 9f107513 | Anthony Liguori | { |
2624 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
2625 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
2626 | 9f107513 | Anthony Liguori | } |
2627 | 9f107513 | Anthony Liguori | |
2628 | b2c224be | Venkateswararao Jujjuri (JV) | static void v9fs_link(V9fsState *s, V9fsPDU *pdu) |
2629 | b2c224be | Venkateswararao Jujjuri (JV) | { |
2630 | b2c224be | Venkateswararao Jujjuri (JV) | int32_t dfid, oldfid; |
2631 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsFidState *dfidp, *oldfidp; |
2632 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsString name, fullname; |
2633 | b2c224be | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
2634 | b2c224be | Venkateswararao Jujjuri (JV) | int err = 0; |
2635 | b2c224be | Venkateswararao Jujjuri (JV) | |
2636 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_init(&fullname); |
2637 | b2c224be | Venkateswararao Jujjuri (JV) | |
2638 | b2c224be | Venkateswararao Jujjuri (JV) | pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name);
|
2639 | b2c224be | Venkateswararao Jujjuri (JV) | |
2640 | b2c224be | Venkateswararao Jujjuri (JV) | dfidp = lookup_fid(s, dfid); |
2641 | b2c224be | Venkateswararao Jujjuri (JV) | if (dfidp == NULL) { |
2642 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2643 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2644 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2645 | b2c224be | Venkateswararao Jujjuri (JV) | |
2646 | b2c224be | Venkateswararao Jujjuri (JV) | oldfidp = lookup_fid(s, oldfid); |
2647 | b2c224be | Venkateswararao Jujjuri (JV) | if (oldfidp == NULL) { |
2648 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2649 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2650 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2651 | b2c224be | Venkateswararao Jujjuri (JV) | |
2652 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&fullname, "%s/%s", dfidp->path.data, name.data);
|
2653 | b2c224be | Venkateswararao Jujjuri (JV) | err = offset; |
2654 | b2c224be | Venkateswararao Jujjuri (JV) | err = v9fs_do_link(s, &oldfidp->path, &fullname); |
2655 | b2c224be | Venkateswararao Jujjuri (JV) | if (err) {
|
2656 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2657 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2658 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&fullname); |
2659 | b2c224be | Venkateswararao Jujjuri (JV) | |
2660 | b2c224be | Venkateswararao Jujjuri (JV) | out:
|
2661 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&name); |
2662 | b2c224be | Venkateswararao Jujjuri (JV) | complete_pdu(s, pdu, err); |
2663 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2664 | b2c224be | Venkateswararao Jujjuri (JV) | |
2665 | 5bae1900 | Anthony Liguori | static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs, |
2666 | 5bae1900 | Anthony Liguori | int err)
|
2667 | 5bae1900 | Anthony Liguori | { |
2668 | 5bae1900 | Anthony Liguori | if (err < 0) { |
2669 | 926487b7 | Sripathi Kodi | err = -errno; |
2670 | 926487b7 | Sripathi Kodi | } else {
|
2671 | 926487b7 | Sripathi Kodi | err = vs->offset; |
2672 | 5bae1900 | Anthony Liguori | } |
2673 | 5bae1900 | Anthony Liguori | |
2674 | 926487b7 | Sripathi Kodi | /* For TREMOVE we need to clunk the fid even on failed remove */
|
2675 | 926487b7 | Sripathi Kodi | free_fid(s, vs->fidp->fid); |
2676 | 926487b7 | Sripathi Kodi | |
2677 | 5bae1900 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2678 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2679 | 5bae1900 | Anthony Liguori | } |
2680 | 5bae1900 | Anthony Liguori | |
2681 | 9f107513 | Anthony Liguori | static void v9fs_remove(V9fsState *s, V9fsPDU *pdu) |
2682 | 9f107513 | Anthony Liguori | { |
2683 | 5bae1900 | Anthony Liguori | int32_t fid; |
2684 | 5bae1900 | Anthony Liguori | V9fsRemoveState *vs; |
2685 | 5bae1900 | Anthony Liguori | int err = 0; |
2686 | 5bae1900 | Anthony Liguori | |
2687 | 5bae1900 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2688 | 5bae1900 | Anthony Liguori | vs->pdu = pdu; |
2689 | 5bae1900 | Anthony Liguori | vs->offset = 7;
|
2690 | 5bae1900 | Anthony Liguori | |
2691 | 5bae1900 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
2692 | 5bae1900 | Anthony Liguori | |
2693 | 5bae1900 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2694 | 5bae1900 | Anthony Liguori | if (vs->fidp == NULL) { |
2695 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
2696 | 5bae1900 | Anthony Liguori | goto out;
|
2697 | 9f107513 | Anthony Liguori | } |
2698 | 5bae1900 | Anthony Liguori | |
2699 | 5bae1900 | Anthony Liguori | err = v9fs_do_remove(s, &vs->fidp->path); |
2700 | 5bae1900 | Anthony Liguori | v9fs_remove_post_remove(s, vs, err); |
2701 | 5bae1900 | Anthony Liguori | return;
|
2702 | 5bae1900 | Anthony Liguori | |
2703 | 5bae1900 | Anthony Liguori | out:
|
2704 | 5bae1900 | Anthony Liguori | complete_pdu(s, pdu, err); |
2705 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2706 | 9f107513 | Anthony Liguori | } |
2707 | 9f107513 | Anthony Liguori | |
2708 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err) |
2709 | 8cf89e00 | Anthony Liguori | { |
2710 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2711 | 8cf89e00 | Anthony Liguori | goto out;
|
2712 | 8cf89e00 | Anthony Liguori | } |
2713 | 8cf89e00 | Anthony Liguori | |
2714 | 8cf89e00 | Anthony Liguori | err = vs->offset; |
2715 | 8cf89e00 | Anthony Liguori | |
2716 | 8cf89e00 | Anthony Liguori | out:
|
2717 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2718 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2719 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2720 | 8cf89e00 | Anthony Liguori | } |
2721 | 8cf89e00 | Anthony Liguori | |
2722 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err) |
2723 | 8cf89e00 | Anthony Liguori | { |
2724 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2725 | 8cf89e00 | Anthony Liguori | goto out;
|
2726 | 8cf89e00 | Anthony Liguori | } |
2727 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.length != -1) { |
2728 | 8cf89e00 | Anthony Liguori | if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) { |
2729 | 8cf89e00 | Anthony Liguori | err = -errno; |
2730 | 8cf89e00 | Anthony Liguori | } |
2731 | 8cf89e00 | Anthony Liguori | } |
2732 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_truncate(s, vs, err); |
2733 | 8cf89e00 | Anthony Liguori | return;
|
2734 | 8cf89e00 | Anthony Liguori | |
2735 | 8cf89e00 | Anthony Liguori | out:
|
2736 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2737 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2738 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2739 | 8cf89e00 | Anthony Liguori | } |
2740 | 8cf89e00 | Anthony Liguori | |
2741 | c7b4b0b3 | M. Mohan Kumar | static int v9fs_complete_rename(V9fsState *s, V9fsRenameState *vs) |
2742 | 8cf89e00 | Anthony Liguori | { |
2743 | c7b4b0b3 | M. Mohan Kumar | int err = 0; |
2744 | c7b4b0b3 | M. Mohan Kumar | char *old_name, *new_name;
|
2745 | c7b4b0b3 | M. Mohan Kumar | char *end;
|
2746 | 8cf89e00 | Anthony Liguori | |
2747 | c7b4b0b3 | M. Mohan Kumar | if (vs->newdirfid != -1) { |
2748 | c7b4b0b3 | M. Mohan Kumar | V9fsFidState *dirfidp; |
2749 | c7b4b0b3 | M. Mohan Kumar | dirfidp = lookup_fid(s, vs->newdirfid); |
2750 | c7b4b0b3 | M. Mohan Kumar | |
2751 | c7b4b0b3 | M. Mohan Kumar | if (dirfidp == NULL) { |
2752 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2753 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2754 | c7b4b0b3 | M. Mohan Kumar | } |
2755 | c7b4b0b3 | M. Mohan Kumar | |
2756 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(dirfidp->fid_type != P9_FID_NONE); |
2757 | 8cf89e00 | Anthony Liguori | |
2758 | c7b4b0b3 | M. Mohan Kumar | new_name = qemu_mallocz(dirfidp->path.size + vs->name.size + 2);
|
2759 | c7b4b0b3 | M. Mohan Kumar | |
2760 | c7b4b0b3 | M. Mohan Kumar | strcpy(new_name, dirfidp->path.data); |
2761 | c7b4b0b3 | M. Mohan Kumar | strcat(new_name, "/");
|
2762 | c7b4b0b3 | M. Mohan Kumar | strcat(new_name + dirfidp->path.size, vs->name.data); |
2763 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2764 | 8cf89e00 | Anthony Liguori | old_name = vs->fidp->path.data; |
2765 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2766 | 8cf89e00 | Anthony Liguori | if (end) {
|
2767 | 8cf89e00 | Anthony Liguori | end++; |
2768 | 8cf89e00 | Anthony Liguori | } else {
|
2769 | 8cf89e00 | Anthony Liguori | end = old_name; |
2770 | 8cf89e00 | Anthony Liguori | } |
2771 | c7b4b0b3 | M. Mohan Kumar | new_name = qemu_mallocz(end - old_name + vs->name.size + 1);
|
2772 | 8cf89e00 | Anthony Liguori | |
2773 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name, old_name, end - old_name); |
2774 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name + (end - old_name), vs->name.data, vs->name.size); |
2775 | c7b4b0b3 | M. Mohan Kumar | } |
2776 | 8cf89e00 | Anthony Liguori | |
2777 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2778 | c7b4b0b3 | M. Mohan Kumar | vs->name.data = qemu_strdup(new_name); |
2779 | c7b4b0b3 | M. Mohan Kumar | vs->name.size = strlen(new_name); |
2780 | 8cf89e00 | Anthony Liguori | |
2781 | c7b4b0b3 | M. Mohan Kumar | if (strcmp(new_name, vs->fidp->path.data) != 0) { |
2782 | c7b4b0b3 | M. Mohan Kumar | if (v9fs_do_rename(s, &vs->fidp->path, &vs->name)) {
|
2783 | c7b4b0b3 | M. Mohan Kumar | err = -errno; |
2784 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2785 | c7b4b0b3 | M. Mohan Kumar | V9fsFidState *fidp; |
2786 | c7b4b0b3 | M. Mohan Kumar | /*
|
2787 | c7b4b0b3 | M. Mohan Kumar | * Fixup fid's pointing to the old name to
|
2788 | c7b4b0b3 | M. Mohan Kumar | * start pointing to the new name
|
2789 | c7b4b0b3 | M. Mohan Kumar | */
|
2790 | c7b4b0b3 | M. Mohan Kumar | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
2791 | c7b4b0b3 | M. Mohan Kumar | if (vs->fidp == fidp) {
|
2792 | c7b4b0b3 | M. Mohan Kumar | /*
|
2793 | c7b4b0b3 | M. Mohan Kumar | * we replace name of this fid towards the end
|
2794 | c7b4b0b3 | M. Mohan Kumar | * so that our below strcmp will work
|
2795 | c7b4b0b3 | M. Mohan Kumar | */
|
2796 | c7b4b0b3 | M. Mohan Kumar | continue;
|
2797 | c7b4b0b3 | M. Mohan Kumar | } |
2798 | c7b4b0b3 | M. Mohan Kumar | if (!strncmp(vs->fidp->path.data, fidp->path.data,
|
2799 | c7b4b0b3 | M. Mohan Kumar | strlen(vs->fidp->path.data))) { |
2800 | c7b4b0b3 | M. Mohan Kumar | /* replace the name */
|
2801 | c7b4b0b3 | M. Mohan Kumar | v9fs_fix_path(&fidp->path, &vs->name, |
2802 | c7b4b0b3 | M. Mohan Kumar | strlen(vs->fidp->path.data)); |
2803 | 8cf89e00 | Anthony Liguori | } |
2804 | 8cf89e00 | Anthony Liguori | } |
2805 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_copy(&vs->fidp->path, &vs->name); |
2806 | 8cf89e00 | Anthony Liguori | } |
2807 | 8cf89e00 | Anthony Liguori | } |
2808 | c7b4b0b3 | M. Mohan Kumar | out:
|
2809 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2810 | c7b4b0b3 | M. Mohan Kumar | return err;
|
2811 | c7b4b0b3 | M. Mohan Kumar | } |
2812 | c7b4b0b3 | M. Mohan Kumar | |
2813 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_rename_post_rename(V9fsState *s, V9fsRenameState *vs, int err) |
2814 | c7b4b0b3 | M. Mohan Kumar | { |
2815 | c7b4b0b3 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2816 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vs); |
2817 | c7b4b0b3 | M. Mohan Kumar | } |
2818 | c7b4b0b3 | M. Mohan Kumar | |
2819 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err) |
2820 | c7b4b0b3 | M. Mohan Kumar | { |
2821 | c7b4b0b3 | M. Mohan Kumar | if (err < 0) { |
2822 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2823 | c7b4b0b3 | M. Mohan Kumar | } |
2824 | c7b4b0b3 | M. Mohan Kumar | |
2825 | c7b4b0b3 | M. Mohan Kumar | if (vs->v9stat.name.size != 0) { |
2826 | c7b4b0b3 | M. Mohan Kumar | V9fsRenameState *vr; |
2827 | c7b4b0b3 | M. Mohan Kumar | |
2828 | 783f04e1 | Aneesh Kumar K.V | vr = qemu_mallocz(sizeof(V9fsRenameState));
|
2829 | c7b4b0b3 | M. Mohan Kumar | vr->newdirfid = -1;
|
2830 | c7b4b0b3 | M. Mohan Kumar | vr->pdu = vs->pdu; |
2831 | c7b4b0b3 | M. Mohan Kumar | vr->fidp = vs->fidp; |
2832 | c7b4b0b3 | M. Mohan Kumar | vr->offset = vs->offset; |
2833 | c7b4b0b3 | M. Mohan Kumar | vr->name.size = vs->v9stat.name.size; |
2834 | c7b4b0b3 | M. Mohan Kumar | vr->name.data = qemu_strdup(vs->v9stat.name.data); |
2835 | c7b4b0b3 | M. Mohan Kumar | |
2836 | c7b4b0b3 | M. Mohan Kumar | err = v9fs_complete_rename(s, vr); |
2837 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vr); |
2838 | c7b4b0b3 | M. Mohan Kumar | } |
2839 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_rename(s, vs, err); |
2840 | 8cf89e00 | Anthony Liguori | return;
|
2841 | 8cf89e00 | Anthony Liguori | |
2842 | 8cf89e00 | Anthony Liguori | out:
|
2843 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2844 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2845 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2846 | 8cf89e00 | Anthony Liguori | } |
2847 | 8cf89e00 | Anthony Liguori | |
2848 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_rename(V9fsState *s, V9fsPDU *pdu) |
2849 | c7b4b0b3 | M. Mohan Kumar | { |
2850 | c7b4b0b3 | M. Mohan Kumar | int32_t fid; |
2851 | c7b4b0b3 | M. Mohan Kumar | V9fsRenameState *vs; |
2852 | c7b4b0b3 | M. Mohan Kumar | ssize_t err = 0;
|
2853 | c7b4b0b3 | M. Mohan Kumar | |
2854 | c7b4b0b3 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
2855 | c7b4b0b3 | M. Mohan Kumar | vs->pdu = pdu; |
2856 | c7b4b0b3 | M. Mohan Kumar | vs->offset = 7;
|
2857 | c7b4b0b3 | M. Mohan Kumar | |
2858 | c7b4b0b3 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &vs->newdirfid, &vs->name);
|
2859 | c7b4b0b3 | M. Mohan Kumar | |
2860 | c7b4b0b3 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
2861 | c7b4b0b3 | M. Mohan Kumar | if (vs->fidp == NULL) { |
2862 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2863 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2864 | c7b4b0b3 | M. Mohan Kumar | } |
2865 | c7b4b0b3 | M. Mohan Kumar | |
2866 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
2867 | c7b4b0b3 | M. Mohan Kumar | |
2868 | c7b4b0b3 | M. Mohan Kumar | err = v9fs_complete_rename(s, vs); |
2869 | c7b4b0b3 | M. Mohan Kumar | v9fs_rename_post_rename(s, vs, err); |
2870 | c7b4b0b3 | M. Mohan Kumar | return;
|
2871 | c7b4b0b3 | M. Mohan Kumar | out:
|
2872 | c7b4b0b3 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2873 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vs); |
2874 | c7b4b0b3 | M. Mohan Kumar | } |
2875 | c7b4b0b3 | M. Mohan Kumar | |
2876 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err) |
2877 | 8cf89e00 | Anthony Liguori | { |
2878 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2879 | 8cf89e00 | Anthony Liguori | goto out;
|
2880 | 8cf89e00 | Anthony Liguori | } |
2881 | 8cf89e00 | Anthony Liguori | |
2882 | f7613bee | Venkateswararao Jujjuri (JV) | if (vs->v9stat.n_gid != -1 || vs->v9stat.n_uid != -1) { |
2883 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chown(s, &vs->fidp->path, vs->v9stat.n_uid,
|
2884 | 8cf89e00 | Anthony Liguori | vs->v9stat.n_gid)) { |
2885 | 8cf89e00 | Anthony Liguori | err = -errno; |
2886 | 8cf89e00 | Anthony Liguori | } |
2887 | 8cf89e00 | Anthony Liguori | } |
2888 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chown(s, vs, err); |
2889 | 8cf89e00 | Anthony Liguori | return;
|
2890 | 8cf89e00 | Anthony Liguori | |
2891 | 8cf89e00 | Anthony Liguori | out:
|
2892 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2893 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2894 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2895 | 8cf89e00 | Anthony Liguori | } |
2896 | 8cf89e00 | Anthony Liguori | |
2897 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chmod(V9fsState *s, V9fsWstatState *vs, int err) |
2898 | 8cf89e00 | Anthony Liguori | { |
2899 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2900 | 8cf89e00 | Anthony Liguori | goto out;
|
2901 | 8cf89e00 | Anthony Liguori | } |
2902 | 8cf89e00 | Anthony Liguori | |
2903 | 74bc02b2 | M. Mohan Kumar | if (vs->v9stat.mtime != -1 || vs->v9stat.atime != -1) { |
2904 | 8fc39ae4 | Sripathi Kodi | struct timespec times[2]; |
2905 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.atime != -1) { |
2906 | 8fc39ae4 | Sripathi Kodi | times[0].tv_sec = vs->v9stat.atime;
|
2907 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = 0; |
2908 | 8fc39ae4 | Sripathi Kodi | } else {
|
2909 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
2910 | 8fc39ae4 | Sripathi Kodi | } |
2911 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.mtime != -1) { |
2912 | 8fc39ae4 | Sripathi Kodi | times[1].tv_sec = vs->v9stat.mtime;
|
2913 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = 0; |
2914 | 8fc39ae4 | Sripathi Kodi | } else {
|
2915 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
2916 | 8fc39ae4 | Sripathi Kodi | } |
2917 | 8fc39ae4 | Sripathi Kodi | |
2918 | 8fc39ae4 | Sripathi Kodi | if (v9fs_do_utimensat(s, &vs->fidp->path, times)) {
|
2919 | 8cf89e00 | Anthony Liguori | err = -errno; |
2920 | 8cf89e00 | Anthony Liguori | } |
2921 | 8cf89e00 | Anthony Liguori | } |
2922 | 8cf89e00 | Anthony Liguori | |
2923 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_utime(s, vs, err); |
2924 | 8cf89e00 | Anthony Liguori | return;
|
2925 | 8cf89e00 | Anthony Liguori | |
2926 | 8cf89e00 | Anthony Liguori | out:
|
2927 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2928 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2929 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2930 | 8cf89e00 | Anthony Liguori | } |
2931 | 8cf89e00 | Anthony Liguori | |
2932 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_fsync(V9fsState *s, V9fsWstatState *vs, int err) |
2933 | 8cf89e00 | Anthony Liguori | { |
2934 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2935 | 8cf89e00 | Anthony Liguori | err = -errno; |
2936 | 8cf89e00 | Anthony Liguori | } |
2937 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2938 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2939 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2940 | 8cf89e00 | Anthony Liguori | } |
2941 | 8cf89e00 | Anthony Liguori | |
2942 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_lstat(V9fsState *s, V9fsWstatState *vs, int err) |
2943 | 8cf89e00 | Anthony Liguori | { |
2944 | 8cf89e00 | Anthony Liguori | uint32_t v9_mode; |
2945 | 8cf89e00 | Anthony Liguori | |
2946 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2947 | 8cf89e00 | Anthony Liguori | err = -errno; |
2948 | 8cf89e00 | Anthony Liguori | goto out;
|
2949 | 8cf89e00 | Anthony Liguori | } |
2950 | 8cf89e00 | Anthony Liguori | |
2951 | 8cf89e00 | Anthony Liguori | v9_mode = stat_to_v9mode(&vs->stbuf); |
2952 | 8cf89e00 | Anthony Liguori | |
2953 | 8cf89e00 | Anthony Liguori | if ((vs->v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2954 | 8cf89e00 | Anthony Liguori | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2955 | 8cf89e00 | Anthony Liguori | /* Attempting to change the type */
|
2956 | 8cf89e00 | Anthony Liguori | err = -EIO; |
2957 | 8cf89e00 | Anthony Liguori | goto out;
|
2958 | 8cf89e00 | Anthony Liguori | } |
2959 | 8cf89e00 | Anthony Liguori | |
2960 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chmod(s, &vs->fidp->path, v9mode_to_mode(vs->v9stat.mode,
|
2961 | 8cf89e00 | Anthony Liguori | &vs->v9stat.extension))) { |
2962 | 8cf89e00 | Anthony Liguori | err = -errno; |
2963 | 8cf89e00 | Anthony Liguori | } |
2964 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2965 | 8cf89e00 | Anthony Liguori | return;
|
2966 | 8cf89e00 | Anthony Liguori | |
2967 | 8cf89e00 | Anthony Liguori | out:
|
2968 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2969 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2970 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2971 | 8cf89e00 | Anthony Liguori | } |
2972 | 8cf89e00 | Anthony Liguori | |
2973 | 9f107513 | Anthony Liguori | static void v9fs_wstat(V9fsState *s, V9fsPDU *pdu) |
2974 | 9f107513 | Anthony Liguori | { |
2975 | 8cf89e00 | Anthony Liguori | int32_t fid; |
2976 | 8cf89e00 | Anthony Liguori | V9fsWstatState *vs; |
2977 | 8cf89e00 | Anthony Liguori | int err = 0; |
2978 | 8cf89e00 | Anthony Liguori | |
2979 | 8cf89e00 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2980 | 8cf89e00 | Anthony Liguori | vs->pdu = pdu; |
2981 | 8cf89e00 | Anthony Liguori | vs->offset = 7;
|
2982 | 8cf89e00 | Anthony Liguori | |
2983 | 8cf89e00 | Anthony Liguori | pdu_unmarshal(pdu, vs->offset, "dwS", &fid, &vs->unused, &vs->v9stat);
|
2984 | 8cf89e00 | Anthony Liguori | |
2985 | 8cf89e00 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2986 | 8cf89e00 | Anthony Liguori | if (vs->fidp == NULL) { |
2987 | 8cf89e00 | Anthony Liguori | err = -EINVAL; |
2988 | 8cf89e00 | Anthony Liguori | goto out;
|
2989 | 9f107513 | Anthony Liguori | } |
2990 | 8cf89e00 | Anthony Liguori | |
2991 | 8cf89e00 | Anthony Liguori | /* do we need to sync the file? */
|
2992 | 8cf89e00 | Anthony Liguori | if (donttouch_stat(&vs->v9stat)) {
|
2993 | d62dbb51 | Aneesh Kumar K.V | err = v9fs_do_fsync(s, vs->fidp->fs.fd); |
2994 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_fsync(s, vs, err); |
2995 | 8cf89e00 | Anthony Liguori | return;
|
2996 | 8cf89e00 | Anthony Liguori | } |
2997 | 8cf89e00 | Anthony Liguori | |
2998 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mode != -1) { |
2999 | 8cf89e00 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
3000 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_lstat(s, vs, err); |
3001 | 8cf89e00 | Anthony Liguori | return;
|
3002 | 8cf89e00 | Anthony Liguori | } |
3003 | 8cf89e00 | Anthony Liguori | |
3004 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
3005 | 8cf89e00 | Anthony Liguori | return;
|
3006 | 8cf89e00 | Anthony Liguori | |
3007 | 8cf89e00 | Anthony Liguori | out:
|
3008 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
3009 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
3010 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
3011 | 9f107513 | Anthony Liguori | } |
3012 | 9f107513 | Anthony Liguori | |
3013 | be940c87 | M. Mohan Kumar | static void v9fs_statfs_post_statfs(V9fsState *s, V9fsStatfsState *vs, int err) |
3014 | be940c87 | M. Mohan Kumar | { |
3015 | 5e94c103 | M. Mohan Kumar | int32_t bsize_factor; |
3016 | 5e94c103 | M. Mohan Kumar | |
3017 | be940c87 | M. Mohan Kumar | if (err) {
|
3018 | be940c87 | M. Mohan Kumar | err = -errno; |
3019 | be940c87 | M. Mohan Kumar | goto out;
|
3020 | be940c87 | M. Mohan Kumar | } |
3021 | be940c87 | M. Mohan Kumar | |
3022 | 5e94c103 | M. Mohan Kumar | /*
|
3023 | 5e94c103 | M. Mohan Kumar | * compute bsize factor based on host file system block size
|
3024 | 5e94c103 | M. Mohan Kumar | * and client msize
|
3025 | 5e94c103 | M. Mohan Kumar | */
|
3026 | 5e94c103 | M. Mohan Kumar | bsize_factor = (s->msize - P9_IOHDRSZ)/vs->stbuf.f_bsize; |
3027 | 5e94c103 | M. Mohan Kumar | if (!bsize_factor) {
|
3028 | 5e94c103 | M. Mohan Kumar | bsize_factor = 1;
|
3029 | 5e94c103 | M. Mohan Kumar | } |
3030 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type = vs->stbuf.f_type; |
3031 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bsize = vs->stbuf.f_bsize; |
3032 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bsize *= bsize_factor; |
3033 | 5e94c103 | M. Mohan Kumar | /*
|
3034 | 5e94c103 | M. Mohan Kumar | * f_bsize is adjusted(multiplied) by bsize factor, so we need to
|
3035 | 5e94c103 | M. Mohan Kumar | * adjust(divide) the number of blocks, free blocks and available
|
3036 | 5e94c103 | M. Mohan Kumar | * blocks by bsize factor
|
3037 | 5e94c103 | M. Mohan Kumar | */
|
3038 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_blocks = vs->stbuf.f_blocks/bsize_factor; |
3039 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bfree = vs->stbuf.f_bfree/bsize_factor; |
3040 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bavail = vs->stbuf.f_bavail/bsize_factor; |
3041 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_files = vs->stbuf.f_files; |
3042 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree = vs->stbuf.f_ffree; |
3043 | be940c87 | M. Mohan Kumar | vs->v9statfs.fsid_val = (unsigned int) vs->stbuf.f_fsid.__val[0] | |
3044 | be940c87 | M. Mohan Kumar | (unsigned long long)vs->stbuf.f_fsid.__val[1] << 32; |
3045 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen = vs->stbuf.f_namelen; |
3046 | be940c87 | M. Mohan Kumar | |
3047 | be940c87 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "ddqqqqqqd",
|
3048 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type, vs->v9statfs.f_bsize, vs->v9statfs.f_blocks, |
3049 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bfree, vs->v9statfs.f_bavail, vs->v9statfs.f_files, |
3050 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree, vs->v9statfs.fsid_val, |
3051 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen); |
3052 | be940c87 | M. Mohan Kumar | |
3053 | be940c87 | M. Mohan Kumar | out:
|
3054 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, vs->offset); |
3055 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
3056 | be940c87 | M. Mohan Kumar | } |
3057 | be940c87 | M. Mohan Kumar | |
3058 | be940c87 | M. Mohan Kumar | static void v9fs_statfs(V9fsState *s, V9fsPDU *pdu) |
3059 | be940c87 | M. Mohan Kumar | { |
3060 | be940c87 | M. Mohan Kumar | V9fsStatfsState *vs; |
3061 | be940c87 | M. Mohan Kumar | ssize_t err = 0;
|
3062 | be940c87 | M. Mohan Kumar | |
3063 | be940c87 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3064 | be940c87 | M. Mohan Kumar | vs->pdu = pdu; |
3065 | be940c87 | M. Mohan Kumar | vs->offset = 7;
|
3066 | be940c87 | M. Mohan Kumar | |
3067 | be940c87 | M. Mohan Kumar | memset(&vs->v9statfs, 0, sizeof(vs->v9statfs)); |
3068 | be940c87 | M. Mohan Kumar | |
3069 | be940c87 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "d", &vs->fid);
|
3070 | be940c87 | M. Mohan Kumar | |
3071 | be940c87 | M. Mohan Kumar | vs->fidp = lookup_fid(s, vs->fid); |
3072 | be940c87 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3073 | be940c87 | M. Mohan Kumar | err = -ENOENT; |
3074 | be940c87 | M. Mohan Kumar | goto out;
|
3075 | be940c87 | M. Mohan Kumar | } |
3076 | be940c87 | M. Mohan Kumar | |
3077 | be940c87 | M. Mohan Kumar | err = v9fs_do_statfs(s, &vs->fidp->path, &vs->stbuf); |
3078 | be940c87 | M. Mohan Kumar | v9fs_statfs_post_statfs(s, vs, err); |
3079 | be940c87 | M. Mohan Kumar | return;
|
3080 | be940c87 | M. Mohan Kumar | |
3081 | be940c87 | M. Mohan Kumar | out:
|
3082 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3083 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
3084 | be940c87 | M. Mohan Kumar | } |
3085 | be940c87 | M. Mohan Kumar | |
3086 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod_post_lstat(V9fsState *s, V9fsMkState *vs, int err) |
3087 | 5268cecc | M. Mohan Kumar | { |
3088 | 5268cecc | M. Mohan Kumar | if (err == -1) { |
3089 | 5268cecc | M. Mohan Kumar | err = -errno; |
3090 | 5268cecc | M. Mohan Kumar | goto out;
|
3091 | 5268cecc | M. Mohan Kumar | } |
3092 | 5268cecc | M. Mohan Kumar | |
3093 | 5268cecc | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
3094 | 5268cecc | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
3095 | 5268cecc | M. Mohan Kumar | err = vs->offset; |
3096 | 5268cecc | M. Mohan Kumar | out:
|
3097 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3098 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3099 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3100 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3101 | 5268cecc | M. Mohan Kumar | } |
3102 | 5268cecc | M. Mohan Kumar | |
3103 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod_post_mknod(V9fsState *s, V9fsMkState *vs, int err) |
3104 | 5268cecc | M. Mohan Kumar | { |
3105 | 5268cecc | M. Mohan Kumar | if (err == -1) { |
3106 | 5268cecc | M. Mohan Kumar | err = -errno; |
3107 | 5268cecc | M. Mohan Kumar | goto out;
|
3108 | 5268cecc | M. Mohan Kumar | } |
3109 | 5268cecc | M. Mohan Kumar | |
3110 | 5268cecc | M. Mohan Kumar | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
3111 | 5268cecc | M. Mohan Kumar | v9fs_mknod_post_lstat(s, vs, err); |
3112 | 5268cecc | M. Mohan Kumar | return;
|
3113 | 5268cecc | M. Mohan Kumar | out:
|
3114 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3115 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3116 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3117 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3118 | 5268cecc | M. Mohan Kumar | } |
3119 | 5268cecc | M. Mohan Kumar | |
3120 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod(V9fsState *s, V9fsPDU *pdu) |
3121 | 5268cecc | M. Mohan Kumar | { |
3122 | 5268cecc | M. Mohan Kumar | int32_t fid; |
3123 | 5268cecc | M. Mohan Kumar | V9fsMkState *vs; |
3124 | 5268cecc | M. Mohan Kumar | int err = 0; |
3125 | 5268cecc | M. Mohan Kumar | V9fsFidState *fidp; |
3126 | 5268cecc | M. Mohan Kumar | gid_t gid; |
3127 | 5268cecc | M. Mohan Kumar | int mode;
|
3128 | 5268cecc | M. Mohan Kumar | int major, minor;
|
3129 | 5268cecc | M. Mohan Kumar | |
3130 | 5268cecc | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3131 | 5268cecc | M. Mohan Kumar | vs->pdu = pdu; |
3132 | 5268cecc | M. Mohan Kumar | vs->offset = 7;
|
3133 | 5268cecc | M. Mohan Kumar | |
3134 | 5268cecc | M. Mohan Kumar | v9fs_string_init(&vs->fullname); |
3135 | 5268cecc | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dsdddd", &fid, &vs->name, &mode,
|
3136 | 5268cecc | M. Mohan Kumar | &major, &minor, &gid); |
3137 | 5268cecc | M. Mohan Kumar | |
3138 | 5268cecc | M. Mohan Kumar | fidp = lookup_fid(s, fid); |
3139 | 5268cecc | M. Mohan Kumar | if (fidp == NULL) { |
3140 | 5268cecc | M. Mohan Kumar | err = -ENOENT; |
3141 | 5268cecc | M. Mohan Kumar | goto out;
|
3142 | 5268cecc | M. Mohan Kumar | } |
3143 | 5268cecc | M. Mohan Kumar | |
3144 | 5268cecc | M. Mohan Kumar | v9fs_string_sprintf(&vs->fullname, "%s/%s", fidp->path.data, vs->name.data);
|
3145 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, mode, makedev(major, minor), |
3146 | 5268cecc | M. Mohan Kumar | fidp->uid, gid); |
3147 | 5268cecc | M. Mohan Kumar | v9fs_mknod_post_mknod(s, vs, err); |
3148 | 5268cecc | M. Mohan Kumar | return;
|
3149 | 5268cecc | M. Mohan Kumar | |
3150 | 5268cecc | M. Mohan Kumar | out:
|
3151 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3152 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3153 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3154 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3155 | 5268cecc | M. Mohan Kumar | } |
3156 | 5268cecc | M. Mohan Kumar | |
3157 | 82cc3ee8 | M. Mohan Kumar | /*
|
3158 | 82cc3ee8 | M. Mohan Kumar | * Implement posix byte range locking code
|
3159 | 82cc3ee8 | M. Mohan Kumar | * Server side handling of locking code is very simple, because 9p server in
|
3160 | 82cc3ee8 | M. Mohan Kumar | * QEMU can handle only one client. And most of the lock handling
|
3161 | 82cc3ee8 | M. Mohan Kumar | * (like conflict, merging) etc is done by the VFS layer itself, so no need to
|
3162 | 82cc3ee8 | M. Mohan Kumar | * do any thing in * qemu 9p server side lock code path.
|
3163 | 82cc3ee8 | M. Mohan Kumar | * So when a TLOCK request comes, always return success
|
3164 | 82cc3ee8 | M. Mohan Kumar | */
|
3165 | 82cc3ee8 | M. Mohan Kumar | |
3166 | 82cc3ee8 | M. Mohan Kumar | static void v9fs_lock(V9fsState *s, V9fsPDU *pdu) |
3167 | 82cc3ee8 | M. Mohan Kumar | { |
3168 | 82cc3ee8 | M. Mohan Kumar | int32_t fid, err = 0;
|
3169 | 82cc3ee8 | M. Mohan Kumar | V9fsLockState *vs; |
3170 | 82cc3ee8 | M. Mohan Kumar | |
3171 | 82cc3ee8 | M. Mohan Kumar | vs = qemu_mallocz(sizeof(*vs));
|
3172 | 82cc3ee8 | M. Mohan Kumar | vs->pdu = pdu; |
3173 | 82cc3ee8 | M. Mohan Kumar | vs->offset = 7;
|
3174 | 82cc3ee8 | M. Mohan Kumar | |
3175 | 82cc3ee8 | M. Mohan Kumar | vs->flock = qemu_malloc(sizeof(*vs->flock));
|
3176 | 82cc3ee8 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dbdqqds", &fid, &vs->flock->type,
|
3177 | 82cc3ee8 | M. Mohan Kumar | &vs->flock->flags, &vs->flock->start, &vs->flock->length, |
3178 | 82cc3ee8 | M. Mohan Kumar | &vs->flock->proc_id, &vs->flock->client_id); |
3179 | 82cc3ee8 | M. Mohan Kumar | |
3180 | 82cc3ee8 | M. Mohan Kumar | vs->status = P9_LOCK_ERROR; |
3181 | 82cc3ee8 | M. Mohan Kumar | |
3182 | 82cc3ee8 | M. Mohan Kumar | /* We support only block flag now (that too ignored currently) */
|
3183 | 82cc3ee8 | M. Mohan Kumar | if (vs->flock->flags & ~P9_LOCK_FLAGS_BLOCK) {
|
3184 | 82cc3ee8 | M. Mohan Kumar | err = -EINVAL; |
3185 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3186 | 82cc3ee8 | M. Mohan Kumar | } |
3187 | 82cc3ee8 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
3188 | 82cc3ee8 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3189 | 82cc3ee8 | M. Mohan Kumar | err = -ENOENT; |
3190 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3191 | 82cc3ee8 | M. Mohan Kumar | } |
3192 | 82cc3ee8 | M. Mohan Kumar | |
3193 | 82cc3ee8 | M. Mohan Kumar | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
3194 | 82cc3ee8 | M. Mohan Kumar | if (err < 0) { |
3195 | 82cc3ee8 | M. Mohan Kumar | err = -errno; |
3196 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3197 | 82cc3ee8 | M. Mohan Kumar | } |
3198 | 82cc3ee8 | M. Mohan Kumar | vs->status = P9_LOCK_SUCCESS; |
3199 | 82cc3ee8 | M. Mohan Kumar | out:
|
3200 | 82cc3ee8 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "b", vs->status);
|
3201 | 82cc3ee8 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3202 | 82cc3ee8 | M. Mohan Kumar | qemu_free(vs->flock); |
3203 | 82cc3ee8 | M. Mohan Kumar | qemu_free(vs); |
3204 | 82cc3ee8 | M. Mohan Kumar | } |
3205 | 82cc3ee8 | M. Mohan Kumar | |
3206 | 8f354003 | M. Mohan Kumar | /*
|
3207 | 8f354003 | M. Mohan Kumar | * When a TGETLOCK request comes, always return success because all lock
|
3208 | 8f354003 | M. Mohan Kumar | * handling is done by client's VFS layer.
|
3209 | 8f354003 | M. Mohan Kumar | */
|
3210 | 8f354003 | M. Mohan Kumar | |
3211 | 8f354003 | M. Mohan Kumar | static void v9fs_getlock(V9fsState *s, V9fsPDU *pdu) |
3212 | 8f354003 | M. Mohan Kumar | { |
3213 | 8f354003 | M. Mohan Kumar | int32_t fid, err = 0;
|
3214 | 8f354003 | M. Mohan Kumar | V9fsGetlockState *vs; |
3215 | 8f354003 | M. Mohan Kumar | |
3216 | 8f354003 | M. Mohan Kumar | vs = qemu_mallocz(sizeof(*vs));
|
3217 | 8f354003 | M. Mohan Kumar | vs->pdu = pdu; |
3218 | 8f354003 | M. Mohan Kumar | vs->offset = 7;
|
3219 | 8f354003 | M. Mohan Kumar | |
3220 | 8f354003 | M. Mohan Kumar | vs->glock = qemu_malloc(sizeof(*vs->glock));
|
3221 | 8f354003 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dbqqds", &fid, &vs->glock->type,
|
3222 | 8f354003 | M. Mohan Kumar | &vs->glock->start, &vs->glock->length, &vs->glock->proc_id, |
3223 | 8f354003 | M. Mohan Kumar | &vs->glock->client_id); |
3224 | 8f354003 | M. Mohan Kumar | |
3225 | 8f354003 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
3226 | 8f354003 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3227 | 8f354003 | M. Mohan Kumar | err = -ENOENT; |
3228 | 8f354003 | M. Mohan Kumar | goto out;
|
3229 | 8f354003 | M. Mohan Kumar | } |
3230 | 8f354003 | M. Mohan Kumar | |
3231 | 8f354003 | M. Mohan Kumar | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
3232 | 8f354003 | M. Mohan Kumar | if (err < 0) { |
3233 | 8f354003 | M. Mohan Kumar | err = -errno; |
3234 | 8f354003 | M. Mohan Kumar | goto out;
|
3235 | 8f354003 | M. Mohan Kumar | } |
3236 | 8f354003 | M. Mohan Kumar | vs->glock->type = F_UNLCK; |
3237 | 8f354003 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "bqqds", vs->glock->type,
|
3238 | 8f354003 | M. Mohan Kumar | vs->glock->start, vs->glock->length, vs->glock->proc_id, |
3239 | 8f354003 | M. Mohan Kumar | &vs->glock->client_id); |
3240 | 8f354003 | M. Mohan Kumar | out:
|
3241 | 8f354003 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3242 | 8f354003 | M. Mohan Kumar | qemu_free(vs->glock); |
3243 | 8f354003 | M. Mohan Kumar | qemu_free(vs); |
3244 | 8f354003 | M. Mohan Kumar | } |
3245 | 8f354003 | M. Mohan Kumar | |
3246 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir_post_lstat(V9fsState *s, V9fsMkState *vs, int err) |
3247 | b67592ea | M. Mohan Kumar | { |
3248 | b67592ea | M. Mohan Kumar | if (err == -1) { |
3249 | b67592ea | M. Mohan Kumar | err = -errno; |
3250 | b67592ea | M. Mohan Kumar | goto out;
|
3251 | b67592ea | M. Mohan Kumar | } |
3252 | b67592ea | M. Mohan Kumar | |
3253 | b67592ea | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
3254 | b67592ea | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
3255 | b67592ea | M. Mohan Kumar | err = vs->offset; |
3256 | b67592ea | M. Mohan Kumar | out:
|
3257 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3258 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3259 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3260 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3261 | b67592ea | M. Mohan Kumar | } |
3262 | b67592ea | M. Mohan Kumar | |
3263 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir_post_mkdir(V9fsState *s, V9fsMkState *vs, int err) |
3264 | b67592ea | M. Mohan Kumar | { |
3265 | b67592ea | M. Mohan Kumar | if (err == -1) { |
3266 | b67592ea | M. Mohan Kumar | err = -errno; |
3267 | b67592ea | M. Mohan Kumar | goto out;
|
3268 | b67592ea | M. Mohan Kumar | } |
3269 | b67592ea | M. Mohan Kumar | |
3270 | b67592ea | M. Mohan Kumar | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
3271 | b67592ea | M. Mohan Kumar | v9fs_mkdir_post_lstat(s, vs, err); |
3272 | b67592ea | M. Mohan Kumar | return;
|
3273 | b67592ea | M. Mohan Kumar | out:
|
3274 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3275 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3276 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3277 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3278 | b67592ea | M. Mohan Kumar | } |
3279 | b67592ea | M. Mohan Kumar | |
3280 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir(V9fsState *s, V9fsPDU *pdu) |
3281 | b67592ea | M. Mohan Kumar | { |
3282 | b67592ea | M. Mohan Kumar | int32_t fid; |
3283 | b67592ea | M. Mohan Kumar | V9fsMkState *vs; |
3284 | b67592ea | M. Mohan Kumar | int err = 0; |
3285 | b67592ea | M. Mohan Kumar | V9fsFidState *fidp; |
3286 | b67592ea | M. Mohan Kumar | gid_t gid; |
3287 | b67592ea | M. Mohan Kumar | int mode;
|
3288 | b67592ea | M. Mohan Kumar | |
3289 | b67592ea | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3290 | b67592ea | M. Mohan Kumar | vs->pdu = pdu; |
3291 | b67592ea | M. Mohan Kumar | vs->offset = 7;
|
3292 | b67592ea | M. Mohan Kumar | |
3293 | b67592ea | M. Mohan Kumar | v9fs_string_init(&vs->fullname); |
3294 | b67592ea | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dsdd", &fid, &vs->name, &mode,
|
3295 | b67592ea | M. Mohan Kumar | &gid); |
3296 | b67592ea | M. Mohan Kumar | |
3297 | b67592ea | M. Mohan Kumar | fidp = lookup_fid(s, fid); |
3298 | b67592ea | M. Mohan Kumar | if (fidp == NULL) { |
3299 | b67592ea | M. Mohan Kumar | err = -ENOENT; |
3300 | b67592ea | M. Mohan Kumar | goto out;
|
3301 | b67592ea | M. Mohan Kumar | } |
3302 | b67592ea | M. Mohan Kumar | |
3303 | b67592ea | M. Mohan Kumar | v9fs_string_sprintf(&vs->fullname, "%s/%s", fidp->path.data, vs->name.data);
|
3304 | b67592ea | M. Mohan Kumar | err = v9fs_do_mkdir(s, vs->fullname.data, mode, fidp->uid, gid); |
3305 | b67592ea | M. Mohan Kumar | v9fs_mkdir_post_mkdir(s, vs, err); |
3306 | b67592ea | M. Mohan Kumar | return;
|
3307 | b67592ea | M. Mohan Kumar | |
3308 | b67592ea | M. Mohan Kumar | out:
|
3309 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3310 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3311 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3312 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3313 | b67592ea | M. Mohan Kumar | } |
3314 | b67592ea | M. Mohan Kumar | |
3315 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_xattr_getvalue(V9fsState *s, V9fsXattrState *vs, int err) |
3316 | fa32ef88 | Aneesh Kumar K.V | { |
3317 | fa32ef88 | Aneesh Kumar K.V | |
3318 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3319 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3320 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3321 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3322 | fa32ef88 | Aneesh Kumar K.V | } |
3323 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "q", vs->size);
|
3324 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
3325 | fa32ef88 | Aneesh Kumar K.V | out:
|
3326 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3327 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3328 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3329 | fa32ef88 | Aneesh Kumar K.V | return;
|
3330 | fa32ef88 | Aneesh Kumar K.V | } |
3331 | fa32ef88 | Aneesh Kumar K.V | |
3332 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_xattr_check(V9fsState *s, V9fsXattrState *vs, ssize_t err) |
3333 | fa32ef88 | Aneesh Kumar K.V | { |
3334 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3335 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3336 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3337 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3338 | fa32ef88 | Aneesh Kumar K.V | } |
3339 | fa32ef88 | Aneesh Kumar K.V | /*
|
3340 | fa32ef88 | Aneesh Kumar K.V | * Read the xattr value
|
3341 | fa32ef88 | Aneesh Kumar K.V | */
|
3342 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3343 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3344 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = -1;
|
3345 | fa32ef88 | Aneesh Kumar K.V | if (vs->size) {
|
3346 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3347 | fa32ef88 | Aneesh Kumar K.V | err = v9fs_do_lgetxattr(s, &vs->xattr_fidp->path, |
3348 | fa32ef88 | Aneesh Kumar K.V | &vs->name, vs->xattr_fidp->fs.xattr.value, |
3349 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len); |
3350 | fa32ef88 | Aneesh Kumar K.V | } |
3351 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_xattr_getvalue(s, vs, err); |
3352 | fa32ef88 | Aneesh Kumar K.V | return;
|
3353 | fa32ef88 | Aneesh Kumar K.V | out:
|
3354 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3355 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3356 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3357 | fa32ef88 | Aneesh Kumar K.V | } |
3358 | fa32ef88 | Aneesh Kumar K.V | |
3359 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_lxattr_getvalue(V9fsState *s, |
3360 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs, int err)
|
3361 | fa32ef88 | Aneesh Kumar K.V | { |
3362 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3363 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3364 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3365 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3366 | fa32ef88 | Aneesh Kumar K.V | } |
3367 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "q", vs->size);
|
3368 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
3369 | fa32ef88 | Aneesh Kumar K.V | out:
|
3370 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3371 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3372 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3373 | fa32ef88 | Aneesh Kumar K.V | return;
|
3374 | fa32ef88 | Aneesh Kumar K.V | } |
3375 | fa32ef88 | Aneesh Kumar K.V | |
3376 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_lxattr_check(V9fsState *s, |
3377 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs, ssize_t err) |
3378 | fa32ef88 | Aneesh Kumar K.V | { |
3379 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3380 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3381 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3382 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3383 | fa32ef88 | Aneesh Kumar K.V | } |
3384 | fa32ef88 | Aneesh Kumar K.V | /*
|
3385 | fa32ef88 | Aneesh Kumar K.V | * Read the xattr value
|
3386 | fa32ef88 | Aneesh Kumar K.V | */
|
3387 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3388 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3389 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = -1;
|
3390 | fa32ef88 | Aneesh Kumar K.V | if (vs->size) {
|
3391 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3392 | fa32ef88 | Aneesh Kumar K.V | err = v9fs_do_llistxattr(s, &vs->xattr_fidp->path, |
3393 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value, |
3394 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len); |
3395 | fa32ef88 | Aneesh Kumar K.V | } |
3396 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_lxattr_getvalue(s, vs, err); |
3397 | fa32ef88 | Aneesh Kumar K.V | return;
|
3398 | fa32ef88 | Aneesh Kumar K.V | out:
|
3399 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3400 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3401 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3402 | fa32ef88 | Aneesh Kumar K.V | } |
3403 | fa32ef88 | Aneesh Kumar K.V | |
3404 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_xattrwalk(V9fsState *s, V9fsPDU *pdu) |
3405 | fa32ef88 | Aneesh Kumar K.V | { |
3406 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
3407 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs; |
3408 | fa32ef88 | Aneesh Kumar K.V | int32_t fid, newfid; |
3409 | fa32ef88 | Aneesh Kumar K.V | |
3410 | fa32ef88 | Aneesh Kumar K.V | vs = qemu_malloc(sizeof(*vs));
|
3411 | fa32ef88 | Aneesh Kumar K.V | vs->pdu = pdu; |
3412 | fa32ef88 | Aneesh Kumar K.V | vs->offset = 7;
|
3413 | fa32ef88 | Aneesh Kumar K.V | |
3414 | fa32ef88 | Aneesh Kumar K.V | pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &newfid, &vs->name);
|
3415 | fa32ef88 | Aneesh Kumar K.V | vs->file_fidp = lookup_fid(s, fid); |
3416 | fa32ef88 | Aneesh Kumar K.V | if (vs->file_fidp == NULL) { |
3417 | fa32ef88 | Aneesh Kumar K.V | err = -ENOENT; |
3418 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3419 | fa32ef88 | Aneesh Kumar K.V | } |
3420 | fa32ef88 | Aneesh Kumar K.V | |
3421 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp = alloc_fid(s, newfid); |
3422 | fa32ef88 | Aneesh Kumar K.V | if (vs->xattr_fidp == NULL) { |
3423 | fa32ef88 | Aneesh Kumar K.V | err = -EINVAL; |
3424 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3425 | fa32ef88 | Aneesh Kumar K.V | } |
3426 | fa32ef88 | Aneesh Kumar K.V | |
3427 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_copy(&vs->xattr_fidp->path, &vs->file_fidp->path); |
3428 | fa32ef88 | Aneesh Kumar K.V | if (vs->name.data[0] == 0) { |
3429 | fa32ef88 | Aneesh Kumar K.V | /*
|
3430 | fa32ef88 | Aneesh Kumar K.V | * listxattr request. Get the size first
|
3431 | fa32ef88 | Aneesh Kumar K.V | */
|
3432 | fa32ef88 | Aneesh Kumar K.V | vs->size = v9fs_do_llistxattr(s, &vs->xattr_fidp->path, |
3433 | fa32ef88 | Aneesh Kumar K.V | NULL, 0); |
3434 | fa32ef88 | Aneesh Kumar K.V | if (vs->size < 0) { |
3435 | fa32ef88 | Aneesh Kumar K.V | err = vs->size; |
3436 | fa32ef88 | Aneesh Kumar K.V | } |
3437 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_lxattr_check(s, vs, err); |
3438 | fa32ef88 | Aneesh Kumar K.V | return;
|
3439 | fa32ef88 | Aneesh Kumar K.V | } else {
|
3440 | fa32ef88 | Aneesh Kumar K.V | /*
|
3441 | fa32ef88 | Aneesh Kumar K.V | * specific xattr fid. We check for xattr
|
3442 | fa32ef88 | Aneesh Kumar K.V | * presence also collect the xattr size
|
3443 | fa32ef88 | Aneesh Kumar K.V | */
|
3444 | fa32ef88 | Aneesh Kumar K.V | vs->size = v9fs_do_lgetxattr(s, &vs->xattr_fidp->path, |
3445 | fa32ef88 | Aneesh Kumar K.V | &vs->name, NULL, 0); |
3446 | fa32ef88 | Aneesh Kumar K.V | if (vs->size < 0) { |
3447 | fa32ef88 | Aneesh Kumar K.V | err = vs->size; |
3448 | fa32ef88 | Aneesh Kumar K.V | } |
3449 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_xattr_check(s, vs, err); |
3450 | fa32ef88 | Aneesh Kumar K.V | return;
|
3451 | fa32ef88 | Aneesh Kumar K.V | } |
3452 | fa32ef88 | Aneesh Kumar K.V | out:
|
3453 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3454 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3455 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3456 | fa32ef88 | Aneesh Kumar K.V | } |
3457 | fa32ef88 | Aneesh Kumar K.V | |
3458 | 10b468bd | Aneesh Kumar K.V | static void v9fs_xattrcreate(V9fsState *s, V9fsPDU *pdu) |
3459 | 10b468bd | Aneesh Kumar K.V | { |
3460 | 10b468bd | Aneesh Kumar K.V | int flags;
|
3461 | 10b468bd | Aneesh Kumar K.V | int32_t fid; |
3462 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
3463 | 10b468bd | Aneesh Kumar K.V | V9fsXattrState *vs; |
3464 | 10b468bd | Aneesh Kumar K.V | |
3465 | 10b468bd | Aneesh Kumar K.V | vs = qemu_malloc(sizeof(*vs));
|
3466 | 10b468bd | Aneesh Kumar K.V | vs->pdu = pdu; |
3467 | 10b468bd | Aneesh Kumar K.V | vs->offset = 7;
|
3468 | 10b468bd | Aneesh Kumar K.V | |
3469 | 10b468bd | Aneesh Kumar K.V | pdu_unmarshal(vs->pdu, vs->offset, "dsqd",
|
3470 | 10b468bd | Aneesh Kumar K.V | &fid, &vs->name, &vs->size, &flags); |
3471 | 10b468bd | Aneesh Kumar K.V | |
3472 | 10b468bd | Aneesh Kumar K.V | vs->file_fidp = lookup_fid(s, fid); |
3473 | 10b468bd | Aneesh Kumar K.V | if (vs->file_fidp == NULL) { |
3474 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
3475 | 10b468bd | Aneesh Kumar K.V | goto out;
|
3476 | 10b468bd | Aneesh Kumar K.V | } |
3477 | 10b468bd | Aneesh Kumar K.V | |
3478 | 10b468bd | Aneesh Kumar K.V | /* Make the file fid point to xattr */
|
3479 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp = vs->file_fidp; |
3480 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3481 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = 0;
|
3482 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3483 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.flags = flags; |
3484 | 10b468bd | Aneesh Kumar K.V | v9fs_string_init(&vs->xattr_fidp->fs.xattr.name); |
3485 | 10b468bd | Aneesh Kumar K.V | v9fs_string_copy(&vs->xattr_fidp->fs.xattr.name, &vs->name); |
3486 | 9ed3ef26 | Aneesh Kumar K.V | if (vs->size)
|
3487 | 9ed3ef26 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3488 | 9ed3ef26 | Aneesh Kumar K.V | else
|
3489 | 9ed3ef26 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = NULL;
|
3490 | 10b468bd | Aneesh Kumar K.V | |
3491 | 10b468bd | Aneesh Kumar K.V | out:
|
3492 | 10b468bd | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3493 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3494 | 10b468bd | Aneesh Kumar K.V | qemu_free(vs); |
3495 | 10b468bd | Aneesh Kumar K.V | } |
3496 | fa32ef88 | Aneesh Kumar K.V | |
3497 | 9f107513 | Anthony Liguori | typedef void (pdu_handler_t)(V9fsState *s, V9fsPDU *pdu); |
3498 | 9f107513 | Anthony Liguori | |
3499 | 9f107513 | Anthony Liguori | static pdu_handler_t *pdu_handlers[] = {
|
3500 | c18e2f94 | Sripathi Kodi | [P9_TREADDIR] = v9fs_readdir, |
3501 | be940c87 | M. Mohan Kumar | [P9_TSTATFS] = v9fs_statfs, |
3502 | 00ede4c2 | Sripathi Kodi | [P9_TGETATTR] = v9fs_getattr, |
3503 | c79ce737 | Sripathi Kodi | [P9_TSETATTR] = v9fs_setattr, |
3504 | fa32ef88 | Aneesh Kumar K.V | [P9_TXATTRWALK] = v9fs_xattrwalk, |
3505 | 10b468bd | Aneesh Kumar K.V | [P9_TXATTRCREATE] = v9fs_xattrcreate, |
3506 | 5268cecc | M. Mohan Kumar | [P9_TMKNOD] = v9fs_mknod, |
3507 | c7b4b0b3 | M. Mohan Kumar | [P9_TRENAME] = v9fs_rename, |
3508 | 82cc3ee8 | M. Mohan Kumar | [P9_TLOCK] = v9fs_lock, |
3509 | 8f354003 | M. Mohan Kumar | [P9_TGETLOCK] = v9fs_getlock, |
3510 | b67592ea | M. Mohan Kumar | [P9_TMKDIR] = v9fs_mkdir, |
3511 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
3512 | 771e9d4c | M. Mohan Kumar | [P9_TLOPEN] = v9fs_open, |
3513 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
3514 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
3515 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
3516 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
3517 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
3518 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
3519 | 9f107513 | Anthony Liguori | #if 0
|
3520 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
3521 | 9f107513 | Anthony Liguori | #endif
|
3522 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
3523 | b2c224be | Venkateswararao Jujjuri (JV) | [P9_TLINK] = v9fs_link, |
3524 | 08c60fc9 | Venkateswararao Jujjuri (JV) | [P9_TSYMLINK] = v9fs_symlink, |
3525 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
3526 | c1568af5 | Venkateswararao Jujjuri (JV) | [P9_TLCREATE] = v9fs_lcreate, |
3527 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
3528 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
3529 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
3530 | 9f107513 | Anthony Liguori | }; |
3531 | 9f107513 | Anthony Liguori | |
3532 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
3533 | 9f107513 | Anthony Liguori | { |
3534 | 9f107513 | Anthony Liguori | pdu_handler_t *handler; |
3535 | 9f107513 | Anthony Liguori | |
3536 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
3537 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
3538 | 9f107513 | Anthony Liguori | } |
3539 | 9f107513 | Anthony Liguori | |
3540 | 9f107513 | Anthony Liguori | BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); |
3541 | 9f107513 | Anthony Liguori | |
3542 | 9f107513 | Anthony Liguori | handler = pdu_handlers[pdu->id]; |
3543 | 9f107513 | Anthony Liguori | BUG_ON(handler == NULL);
|
3544 | 9f107513 | Anthony Liguori | |
3545 | 9f107513 | Anthony Liguori | handler(s, pdu); |
3546 | 9f107513 | Anthony Liguori | } |
3547 | 9f107513 | Anthony Liguori | |
3548 | 9f107513 | Anthony Liguori | static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) |
3549 | 9f107513 | Anthony Liguori | { |
3550 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
3551 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
3552 | 9f107513 | Anthony Liguori | ssize_t len; |
3553 | 9f107513 | Anthony Liguori | |
3554 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
3555 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
3556 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
3557 | 9f107513 | Anthony Liguori | |
3558 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
3559 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
3560 | 9f107513 | Anthony Liguori | |
3561 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
3562 | 9f107513 | Anthony Liguori | |
3563 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
3564 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
3565 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
3566 | 9f107513 | Anthony Liguori | |
3567 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
3568 | 9f107513 | Anthony Liguori | } |
3569 | 9f107513 | Anthony Liguori | |
3570 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
3571 | 9f107513 | Anthony Liguori | } |
3572 | 9f107513 | Anthony Liguori | |
3573 | 9f107513 | Anthony Liguori | static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
|
3574 | 9f107513 | Anthony Liguori | { |
3575 | 9f107513 | Anthony Liguori | features |= 1 << VIRTIO_9P_MOUNT_TAG;
|
3576 | 9f107513 | Anthony Liguori | return features;
|
3577 | 9f107513 | Anthony Liguori | } |
3578 | 9f107513 | Anthony Liguori | |
3579 | 9f107513 | Anthony Liguori | static V9fsState *to_virtio_9p(VirtIODevice *vdev)
|
3580 | 9f107513 | Anthony Liguori | { |
3581 | 9f107513 | Anthony Liguori | return (V9fsState *)vdev;
|
3582 | 9f107513 | Anthony Liguori | } |
3583 | 9f107513 | Anthony Liguori | |
3584 | 9f107513 | Anthony Liguori | static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) |
3585 | 9f107513 | Anthony Liguori | { |
3586 | 9f107513 | Anthony Liguori | struct virtio_9p_config *cfg;
|
3587 | 9f107513 | Anthony Liguori | V9fsState *s = to_virtio_9p(vdev); |
3588 | 9f107513 | Anthony Liguori | |
3589 | 9f107513 | Anthony Liguori | cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + |
3590 | 9f107513 | Anthony Liguori | s->tag_len); |
3591 | 9f107513 | Anthony Liguori | stw_raw(&cfg->tag_len, s->tag_len); |
3592 | 9f107513 | Anthony Liguori | memcpy(cfg->tag, s->tag, s->tag_len); |
3593 | 9f107513 | Anthony Liguori | memcpy(config, cfg, s->config_size); |
3594 | 9f107513 | Anthony Liguori | qemu_free(cfg); |
3595 | 9f107513 | Anthony Liguori | } |
3596 | 9f107513 | Anthony Liguori | |
3597 | 9f107513 | Anthony Liguori | VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) |
3598 | 9f107513 | Anthony Liguori | { |
3599 | 9f107513 | Anthony Liguori | V9fsState *s; |
3600 | 9f107513 | Anthony Liguori | int i, len;
|
3601 | 9f107513 | Anthony Liguori | struct stat stat;
|
3602 | 9f107513 | Anthony Liguori | FsTypeEntry *fse; |
3603 | 9f107513 | Anthony Liguori | |
3604 | 9f107513 | Anthony Liguori | |
3605 | 9f107513 | Anthony Liguori | s = (V9fsState *)virtio_common_init("virtio-9p",
|
3606 | 9f107513 | Anthony Liguori | VIRTIO_ID_9P, |
3607 | 9f107513 | Anthony Liguori | sizeof(struct virtio_9p_config)+ |
3608 | 9f107513 | Anthony Liguori | MAX_TAG_LEN, |
3609 | 9f107513 | Anthony Liguori | sizeof(V9fsState));
|
3610 | 9f107513 | Anthony Liguori | |
3611 | 9f107513 | Anthony Liguori | /* initialize pdu allocator */
|
3612 | 9f107513 | Anthony Liguori | QLIST_INIT(&s->free_list); |
3613 | 9f107513 | Anthony Liguori | for (i = 0; i < (MAX_REQ - 1); i++) { |
3614 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); |
3615 | 9f107513 | Anthony Liguori | } |
3616 | 9f107513 | Anthony Liguori | |
3617 | 9f107513 | Anthony Liguori | s->vq = virtio_add_queue(&s->vdev, MAX_REQ, handle_9p_output); |
3618 | 9f107513 | Anthony Liguori | |
3619 | 9f107513 | Anthony Liguori | fse = get_fsdev_fsentry(conf->fsdev_id); |
3620 | 9f107513 | Anthony Liguori | |
3621 | 9f107513 | Anthony Liguori | if (!fse) {
|
3622 | 9f107513 | Anthony Liguori | /* We don't have a fsdev identified by fsdev_id */
|
3623 | 9f107513 | Anthony Liguori | fprintf(stderr, "Virtio-9p device couldn't find fsdev "
|
3624 | 9f107513 | Anthony Liguori | "with the id %s\n", conf->fsdev_id);
|
3625 | 9f107513 | Anthony Liguori | exit(1);
|
3626 | 9f107513 | Anthony Liguori | } |
3627 | 9f107513 | Anthony Liguori | |
3628 | 9f107513 | Anthony Liguori | if (!fse->path || !conf->tag) {
|
3629 | 9f107513 | Anthony Liguori | /* we haven't specified a mount_tag or the path */
|
3630 | 9f107513 | Anthony Liguori | fprintf(stderr, "fsdev with id %s needs path "
|
3631 | 9f107513 | Anthony Liguori | "and Virtio-9p device needs mount_tag arguments\n",
|
3632 | 9f107513 | Anthony Liguori | conf->fsdev_id); |
3633 | 9f107513 | Anthony Liguori | exit(1);
|
3634 | 9f107513 | Anthony Liguori | } |
3635 | 9f107513 | Anthony Liguori | |
3636 | 758e8e38 | Venkateswararao Jujjuri (JV) | if (!strcmp(fse->security_model, "passthrough")) { |
3637 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the Fileserver set to client user credentials */
|
3638 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_PASSTHROUGH; |
3639 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else if (!strcmp(fse->security_model, "mapped")) { |
3640 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the fileserver are set to QEMU credentials.
|
3641 | 758e8e38 | Venkateswararao Jujjuri (JV) | * Client user credentials are saved in extended attributes.
|
3642 | 758e8e38 | Venkateswararao Jujjuri (JV) | */
|
3643 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_MAPPED; |
3644 | 12848bfc | Aneesh Kumar K.V | } else if (!strcmp(fse->security_model, "none")) { |
3645 | 12848bfc | Aneesh Kumar K.V | /*
|
3646 | 12848bfc | Aneesh Kumar K.V | * Files on the fileserver are set to QEMU credentials.
|
3647 | 12848bfc | Aneesh Kumar K.V | */
|
3648 | 12848bfc | Aneesh Kumar K.V | s->ctx.fs_sm = SM_NONE; |
3649 | 12848bfc | Aneesh Kumar K.V | |
3650 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else {
|
3651 | 12848bfc | Aneesh Kumar K.V | fprintf(stderr, "Default to security_model=none. You may want"
|
3652 | 12848bfc | Aneesh Kumar K.V | " enable advanced security model using "
|
3653 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security option:\n\t security_model=passthrough \n\t "
|
3654 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security_model=mapped\n");
|
3655 | 12848bfc | Aneesh Kumar K.V | s->ctx.fs_sm = SM_NONE; |
3656 | 9ce56db6 | Venkateswararao Jujjuri (JV) | } |
3657 | 9ce56db6 | Venkateswararao Jujjuri (JV) | |
3658 | 9f107513 | Anthony Liguori | if (lstat(fse->path, &stat)) {
|
3659 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s does not exist\n", fse->path);
|
3660 | 9f107513 | Anthony Liguori | exit(1);
|
3661 | 9f107513 | Anthony Liguori | } else if (!S_ISDIR(stat.st_mode)) { |
3662 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s is not a directory \n", fse->path);
|
3663 | 9f107513 | Anthony Liguori | exit(1);
|
3664 | 9f107513 | Anthony Liguori | } |
3665 | 9f107513 | Anthony Liguori | |
3666 | 9f107513 | Anthony Liguori | s->ctx.fs_root = qemu_strdup(fse->path); |
3667 | 9f107513 | Anthony Liguori | len = strlen(conf->tag); |
3668 | 9f107513 | Anthony Liguori | if (len > MAX_TAG_LEN) {
|
3669 | 9f107513 | Anthony Liguori | len = MAX_TAG_LEN; |
3670 | 9f107513 | Anthony Liguori | } |
3671 | 9f107513 | Anthony Liguori | /* s->tag is non-NULL terminated string */
|
3672 | 9f107513 | Anthony Liguori | s->tag = qemu_malloc(len); |
3673 | 9f107513 | Anthony Liguori | memcpy(s->tag, conf->tag, len); |
3674 | 9f107513 | Anthony Liguori | s->tag_len = len; |
3675 | 9f107513 | Anthony Liguori | s->ctx.uid = -1;
|
3676 | 9f107513 | Anthony Liguori | |
3677 | 9f107513 | Anthony Liguori | s->ops = fse->ops; |
3678 | 9f107513 | Anthony Liguori | s->vdev.get_features = virtio_9p_get_features; |
3679 | 9f107513 | Anthony Liguori | s->config_size = sizeof(struct virtio_9p_config) + |
3680 | 9f107513 | Anthony Liguori | s->tag_len; |
3681 | 9f107513 | Anthony Liguori | s->vdev.get_config = virtio_9p_get_config; |
3682 | 9f107513 | Anthony Liguori | |
3683 | 9f107513 | Anthony Liguori | return &s->vdev;
|
3684 | 9f107513 | Anthony Liguori | } |