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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 dotu = 1; |
22 | 9f107513 | Anthony Liguori | int debug_9p_pdu;
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23 | 9f107513 | Anthony Liguori | |
24 | fac4f111 | Venkateswararao Jujjuri (JV) | enum {
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25 | fac4f111 | Venkateswararao Jujjuri (JV) | Oread = 0x00,
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26 | fac4f111 | Venkateswararao Jujjuri (JV) | Owrite = 0x01,
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27 | fac4f111 | Venkateswararao Jujjuri (JV) | Ordwr = 0x02,
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28 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexec = 0x03,
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29 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexcl = 0x04,
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30 | fac4f111 | Venkateswararao Jujjuri (JV) | Otrunc = 0x10,
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31 | fac4f111 | Venkateswararao Jujjuri (JV) | Orexec = 0x20,
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32 | fac4f111 | Venkateswararao Jujjuri (JV) | Orclose = 0x40,
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33 | fac4f111 | Venkateswararao Jujjuri (JV) | Oappend = 0x80,
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34 | fac4f111 | Venkateswararao Jujjuri (JV) | }; |
35 | fac4f111 | Venkateswararao Jujjuri (JV) | |
36 | fac4f111 | Venkateswararao Jujjuri (JV) | static int omode_to_uflags(int8_t mode) |
37 | fac4f111 | Venkateswararao Jujjuri (JV) | { |
38 | fac4f111 | Venkateswararao Jujjuri (JV) | int ret = 0; |
39 | fac4f111 | Venkateswararao Jujjuri (JV) | |
40 | fac4f111 | Venkateswararao Jujjuri (JV) | switch (mode & 3) { |
41 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oread:
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42 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
43 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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44 | fac4f111 | Venkateswararao Jujjuri (JV) | case Ordwr:
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45 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDWR; |
46 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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47 | fac4f111 | Venkateswararao Jujjuri (JV) | case Owrite:
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48 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_WRONLY; |
49 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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50 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oexec:
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51 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
52 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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53 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
54 | fac4f111 | Venkateswararao Jujjuri (JV) | |
55 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Otrunc) {
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56 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_TRUNC; |
57 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
58 | fac4f111 | Venkateswararao Jujjuri (JV) | |
59 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oappend) {
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60 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_APPEND; |
61 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
62 | fac4f111 | Venkateswararao Jujjuri (JV) | |
63 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oexcl) {
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64 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_EXCL; |
65 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
66 | fac4f111 | Venkateswararao Jujjuri (JV) | |
67 | fac4f111 | Venkateswararao Jujjuri (JV) | return ret;
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68 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
69 | fac4f111 | Venkateswararao Jujjuri (JV) | |
70 | 758e8e38 | Venkateswararao Jujjuri (JV) | void cred_init(FsCred *credp)
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71 | 131dcb25 | Anthony Liguori | { |
72 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_uid = -1;
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73 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_gid = -1;
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74 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_mode = -1;
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75 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_rdev = -1;
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76 | 131dcb25 | Anthony Liguori | } |
77 | 131dcb25 | Anthony Liguori | |
78 | 758e8e38 | Venkateswararao Jujjuri (JV) | static int v9fs_do_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf) |
79 | 131dcb25 | Anthony Liguori | { |
80 | 758e8e38 | Venkateswararao Jujjuri (JV) | return s->ops->lstat(&s->ctx, path->data, stbuf);
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81 | 131dcb25 | Anthony Liguori | } |
82 | 131dcb25 | Anthony Liguori | |
83 | 131dcb25 | Anthony Liguori | static ssize_t v9fs_do_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
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84 | 131dcb25 | Anthony Liguori | { |
85 | 131dcb25 | Anthony Liguori | ssize_t len; |
86 | 131dcb25 | Anthony Liguori | |
87 | 131dcb25 | Anthony Liguori | buf->data = qemu_malloc(1024);
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88 | 131dcb25 | Anthony Liguori | |
89 | 131dcb25 | Anthony Liguori | len = s->ops->readlink(&s->ctx, path->data, buf->data, 1024 - 1); |
90 | 131dcb25 | Anthony Liguori | if (len > -1) { |
91 | 131dcb25 | Anthony Liguori | buf->size = len; |
92 | 131dcb25 | Anthony Liguori | buf->data[len] = 0;
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93 | 131dcb25 | Anthony Liguori | } |
94 | 131dcb25 | Anthony Liguori | |
95 | 131dcb25 | Anthony Liguori | return len;
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96 | 131dcb25 | Anthony Liguori | } |
97 | 131dcb25 | Anthony Liguori | |
98 | 131dcb25 | Anthony Liguori | static int v9fs_do_close(V9fsState *s, int fd) |
99 | 131dcb25 | Anthony Liguori | { |
100 | 131dcb25 | Anthony Liguori | return s->ops->close(&s->ctx, fd);
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101 | 131dcb25 | Anthony Liguori | } |
102 | 131dcb25 | Anthony Liguori | |
103 | 131dcb25 | Anthony Liguori | static int v9fs_do_closedir(V9fsState *s, DIR *dir) |
104 | 131dcb25 | Anthony Liguori | { |
105 | 131dcb25 | Anthony Liguori | return s->ops->closedir(&s->ctx, dir);
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106 | 131dcb25 | Anthony Liguori | } |
107 | 131dcb25 | Anthony Liguori | |
108 | a6568fe2 | Anthony Liguori | static int v9fs_do_open(V9fsState *s, V9fsString *path, int flags) |
109 | a6568fe2 | Anthony Liguori | { |
110 | a6568fe2 | Anthony Liguori | return s->ops->open(&s->ctx, path->data, flags);
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111 | a6568fe2 | Anthony Liguori | } |
112 | a6568fe2 | Anthony Liguori | |
113 | a6568fe2 | Anthony Liguori | static DIR *v9fs_do_opendir(V9fsState *s, V9fsString *path)
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114 | a6568fe2 | Anthony Liguori | { |
115 | a6568fe2 | Anthony Liguori | return s->ops->opendir(&s->ctx, path->data);
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116 | a6568fe2 | Anthony Liguori | } |
117 | a6568fe2 | Anthony Liguori | |
118 | a9231555 | Anthony Liguori | static void v9fs_do_rewinddir(V9fsState *s, DIR *dir) |
119 | a9231555 | Anthony Liguori | { |
120 | a9231555 | Anthony Liguori | return s->ops->rewinddir(&s->ctx, dir);
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121 | a9231555 | Anthony Liguori | } |
122 | a9231555 | Anthony Liguori | |
123 | a9231555 | Anthony Liguori | static off_t v9fs_do_telldir(V9fsState *s, DIR *dir)
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124 | a9231555 | Anthony Liguori | { |
125 | a9231555 | Anthony Liguori | return s->ops->telldir(&s->ctx, dir);
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126 | a9231555 | Anthony Liguori | } |
127 | a9231555 | Anthony Liguori | |
128 | a9231555 | Anthony Liguori | static struct dirent *v9fs_do_readdir(V9fsState *s, DIR *dir) |
129 | a9231555 | Anthony Liguori | { |
130 | a9231555 | Anthony Liguori | return s->ops->readdir(&s->ctx, dir);
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131 | a9231555 | Anthony Liguori | } |
132 | a9231555 | Anthony Liguori | |
133 | a9231555 | Anthony Liguori | static void v9fs_do_seekdir(V9fsState *s, DIR *dir, off_t off) |
134 | a9231555 | Anthony Liguori | { |
135 | a9231555 | Anthony Liguori | return s->ops->seekdir(&s->ctx, dir, off);
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136 | a9231555 | Anthony Liguori | } |
137 | a9231555 | Anthony Liguori | |
138 | a9231555 | Anthony Liguori | static int v9fs_do_readv(V9fsState *s, int fd, const struct iovec *iov, |
139 | a9231555 | Anthony Liguori | int iovcnt)
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140 | a9231555 | Anthony Liguori | { |
141 | a9231555 | Anthony Liguori | return s->ops->readv(&s->ctx, fd, iov, iovcnt);
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142 | a9231555 | Anthony Liguori | } |
143 | a9231555 | Anthony Liguori | |
144 | a9231555 | Anthony Liguori | static off_t v9fs_do_lseek(V9fsState *s, int fd, off_t offset, int whence) |
145 | a9231555 | Anthony Liguori | { |
146 | a9231555 | Anthony Liguori | return s->ops->lseek(&s->ctx, fd, offset, whence);
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147 | a9231555 | Anthony Liguori | } |
148 | a9231555 | Anthony Liguori | |
149 | 8449360c | Anthony Liguori | static int v9fs_do_writev(V9fsState *s, int fd, const struct iovec *iov, |
150 | 8449360c | Anthony Liguori | int iovcnt)
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151 | 8449360c | Anthony Liguori | { |
152 | 8449360c | Anthony Liguori | return s->ops->writev(&s->ctx, fd, iov, iovcnt);
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153 | 8449360c | Anthony Liguori | } |
154 | 8449360c | Anthony Liguori | |
155 | c494dd6f | Anthony Liguori | static int v9fs_do_chmod(V9fsState *s, V9fsString *path, mode_t mode) |
156 | c494dd6f | Anthony Liguori | { |
157 | e95ead32 | Venkateswararao Jujjuri (JV) | FsCred cred; |
158 | e95ead32 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
159 | e95ead32 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
160 | e95ead32 | Venkateswararao Jujjuri (JV) | return s->ops->chmod(&s->ctx, path->data, &cred);
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161 | c494dd6f | Anthony Liguori | } |
162 | c494dd6f | Anthony Liguori | |
163 | 1c293312 | Venkateswararao Jujjuri (JV) | static int v9fs_do_mknod(V9fsState *s, V9fsCreateState *vs, mode_t mode, |
164 | 1c293312 | Venkateswararao Jujjuri (JV) | dev_t dev) |
165 | c494dd6f | Anthony Liguori | { |
166 | 1c293312 | Venkateswararao Jujjuri (JV) | FsCred cred; |
167 | 1c293312 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
168 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_uid = vs->fidp->uid; |
169 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
170 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_rdev = dev; |
171 | 1c293312 | Venkateswararao Jujjuri (JV) | return s->ops->mknod(&s->ctx, vs->fullname.data, &cred);
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172 | c494dd6f | Anthony Liguori | } |
173 | c494dd6f | Anthony Liguori | |
174 | 00ec5c37 | Venkateswararao Jujjuri (JV) | static int v9fs_do_mkdir(V9fsState *s, V9fsCreateState *vs) |
175 | c494dd6f | Anthony Liguori | { |
176 | 00ec5c37 | Venkateswararao Jujjuri (JV) | FsCred cred; |
177 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
178 | 00ec5c37 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
179 | 00ec5c37 | Venkateswararao Jujjuri (JV) | cred.fc_uid = vs->fidp->uid; |
180 | 00ec5c37 | Venkateswararao Jujjuri (JV) | cred.fc_mode = vs->perm & 0777;
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181 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
182 | 00ec5c37 | Venkateswararao Jujjuri (JV) | return s->ops->mkdir(&s->ctx, vs->fullname.data, &cred);
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183 | c494dd6f | Anthony Liguori | } |
184 | c494dd6f | Anthony Liguori | |
185 | c494dd6f | Anthony Liguori | static int v9fs_do_fstat(V9fsState *s, int fd, struct stat *stbuf) |
186 | c494dd6f | Anthony Liguori | { |
187 | c494dd6f | Anthony Liguori | return s->ops->fstat(&s->ctx, fd, stbuf);
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188 | c494dd6f | Anthony Liguori | } |
189 | c494dd6f | Anthony Liguori | |
190 | 4750a96f | Venkateswararao Jujjuri (JV) | static int v9fs_do_open2(V9fsState *s, V9fsCreateState *vs) |
191 | c494dd6f | Anthony Liguori | { |
192 | 4750a96f | Venkateswararao Jujjuri (JV) | FsCred cred; |
193 | 4750a96f | Venkateswararao Jujjuri (JV) | int flags;
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194 | 4750a96f | Venkateswararao Jujjuri (JV) | |
195 | 4750a96f | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
196 | 4750a96f | Venkateswararao Jujjuri (JV) | cred.fc_uid = vs->fidp->uid; |
197 | 4750a96f | Venkateswararao Jujjuri (JV) | cred.fc_mode = vs->perm & 0777;
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198 | 4750a96f | Venkateswararao Jujjuri (JV) | flags = omode_to_uflags(vs->mode) | O_CREAT; |
199 | 4750a96f | Venkateswararao Jujjuri (JV) | |
200 | 4750a96f | Venkateswararao Jujjuri (JV) | return s->ops->open2(&s->ctx, vs->fullname.data, flags, &cred);
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201 | c494dd6f | Anthony Liguori | } |
202 | c494dd6f | Anthony Liguori | |
203 | 879c2813 | Venkateswararao Jujjuri (JV) | static int v9fs_do_symlink(V9fsState *s, V9fsCreateState *vs) |
204 | c494dd6f | Anthony Liguori | { |
205 | 879c2813 | Venkateswararao Jujjuri (JV) | FsCred cred; |
206 | 879c2813 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
207 | 879c2813 | Venkateswararao Jujjuri (JV) | cred.fc_uid = vs->fidp->uid; |
208 | 879c2813 | Venkateswararao Jujjuri (JV) | cred.fc_mode = vs->perm | 0777;
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209 | 879c2813 | Venkateswararao Jujjuri (JV) | |
210 | 879c2813 | Venkateswararao Jujjuri (JV) | return s->ops->symlink(&s->ctx, vs->extension.data, vs->fullname.data,
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211 | 879c2813 | Venkateswararao Jujjuri (JV) | &cred); |
212 | c494dd6f | Anthony Liguori | } |
213 | c494dd6f | Anthony Liguori | |
214 | c494dd6f | Anthony Liguori | static int v9fs_do_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath) |
215 | c494dd6f | Anthony Liguori | { |
216 | c494dd6f | Anthony Liguori | return s->ops->link(&s->ctx, oldpath->data, newpath->data);
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217 | c494dd6f | Anthony Liguori | } |
218 | c494dd6f | Anthony Liguori | |
219 | 8cf89e00 | Anthony Liguori | static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size) |
220 | 8cf89e00 | Anthony Liguori | { |
221 | 8cf89e00 | Anthony Liguori | return s->ops->truncate(&s->ctx, path->data, size);
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222 | 8cf89e00 | Anthony Liguori | } |
223 | 8cf89e00 | Anthony Liguori | |
224 | 8cf89e00 | Anthony Liguori | static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath, |
225 | 8cf89e00 | Anthony Liguori | V9fsString *newpath) |
226 | 8cf89e00 | Anthony Liguori | { |
227 | 8cf89e00 | Anthony Liguori | return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
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228 | 8cf89e00 | Anthony Liguori | } |
229 | 8cf89e00 | Anthony Liguori | |
230 | 8cf89e00 | Anthony Liguori | static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid) |
231 | 8cf89e00 | Anthony Liguori | { |
232 | f7613bee | Venkateswararao Jujjuri (JV) | FsCred cred; |
233 | f7613bee | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
234 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
235 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
236 | f7613bee | Venkateswararao Jujjuri (JV) | |
237 | f7613bee | Venkateswararao Jujjuri (JV) | return s->ops->chown(&s->ctx, path->data, &cred);
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238 | 8cf89e00 | Anthony Liguori | } |
239 | 8cf89e00 | Anthony Liguori | |
240 | 8fc39ae4 | Sripathi Kodi | static int v9fs_do_utimensat(V9fsState *s, V9fsString *path, |
241 | 8fc39ae4 | Sripathi Kodi | const struct timespec times[2]) |
242 | 8cf89e00 | Anthony Liguori | { |
243 | 8fc39ae4 | Sripathi Kodi | return s->ops->utimensat(&s->ctx, path->data, times);
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244 | 8cf89e00 | Anthony Liguori | } |
245 | 8cf89e00 | Anthony Liguori | |
246 | 5bae1900 | Anthony Liguori | static int v9fs_do_remove(V9fsState *s, V9fsString *path) |
247 | 5bae1900 | Anthony Liguori | { |
248 | 5bae1900 | Anthony Liguori | return s->ops->remove(&s->ctx, path->data);
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249 | 5bae1900 | Anthony Liguori | } |
250 | 5bae1900 | Anthony Liguori | |
251 | 8cf89e00 | Anthony Liguori | static int v9fs_do_fsync(V9fsState *s, int fd) |
252 | 8cf89e00 | Anthony Liguori | { |
253 | 8cf89e00 | Anthony Liguori | return s->ops->fsync(&s->ctx, fd);
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254 | 8cf89e00 | Anthony Liguori | } |
255 | 8cf89e00 | Anthony Liguori | |
256 | 5e94c103 | M. Mohan Kumar | static int v9fs_do_statfs(V9fsState *s, V9fsString *path, struct statfs *stbuf) |
257 | 5e94c103 | M. Mohan Kumar | { |
258 | 5e94c103 | M. Mohan Kumar | return s->ops->statfs(&s->ctx, path->data, stbuf);
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259 | 5e94c103 | M. Mohan Kumar | } |
260 | 5e94c103 | M. Mohan Kumar | |
261 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
262 | a03f7874 | Anthony Liguori | { |
263 | a03f7874 | Anthony Liguori | str->data = NULL;
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264 | a03f7874 | Anthony Liguori | str->size = 0;
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265 | a03f7874 | Anthony Liguori | } |
266 | a03f7874 | Anthony Liguori | |
267 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
268 | a03f7874 | Anthony Liguori | { |
269 | a03f7874 | Anthony Liguori | qemu_free(str->data); |
270 | a03f7874 | Anthony Liguori | str->data = NULL;
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271 | a03f7874 | Anthony Liguori | str->size = 0;
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272 | a03f7874 | Anthony Liguori | } |
273 | a03f7874 | Anthony Liguori | |
274 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
275 | a03f7874 | Anthony Liguori | { |
276 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
277 | a03f7874 | Anthony Liguori | } |
278 | a03f7874 | Anthony Liguori | |
279 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
280 | a03f7874 | Anthony Liguori | { |
281 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
282 | a03f7874 | Anthony Liguori | |
283 | a03f7874 | Anthony Liguori | switch (type) {
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284 | a03f7874 | Anthony Liguori | case 'u': { |
285 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
286 | a03f7874 | Anthony Liguori | |
287 | a03f7874 | Anthony Liguori | do {
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288 | a03f7874 | Anthony Liguori | ret++; |
289 | a03f7874 | Anthony Liguori | num = num/10;
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290 | a03f7874 | Anthony Liguori | } while (num);
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291 | a03f7874 | Anthony Liguori | break;
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292 | a03f7874 | Anthony Liguori | } |
293 | a03f7874 | Anthony Liguori | default:
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294 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
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295 | a03f7874 | Anthony Liguori | return -1; |
296 | a03f7874 | Anthony Liguori | } |
297 | a03f7874 | Anthony Liguori | |
298 | a03f7874 | Anthony Liguori | return ret;
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299 | a03f7874 | Anthony Liguori | } |
300 | a03f7874 | Anthony Liguori | |
301 | a03f7874 | Anthony Liguori | static int v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
302 | a03f7874 | Anthony Liguori | { |
303 | a03f7874 | Anthony Liguori | va_list ap2; |
304 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
305 | a03f7874 | Anthony Liguori | int len = 0; |
306 | a03f7874 | Anthony Liguori | int nr_args = 0; |
307 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
|
308 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
309 | a03f7874 | Anthony Liguori | |
310 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
|
311 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
312 | a03f7874 | Anthony Liguori | nr_args++; |
313 | a03f7874 | Anthony Liguori | iter++; |
314 | a03f7874 | Anthony Liguori | } |
315 | a03f7874 | Anthony Liguori | |
316 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
|
317 | a03f7874 | Anthony Liguori | |
318 | a03f7874 | Anthony Liguori | if (!nr_args) {
|
319 | a03f7874 | Anthony Liguori | goto alloc_print;
|
320 | a03f7874 | Anthony Liguori | } |
321 | a03f7874 | Anthony Liguori | |
322 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
323 | a03f7874 | Anthony Liguori | |
324 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
|
325 | a03f7874 | Anthony Liguori | |
326 | a03f7874 | Anthony Liguori | /* Now parse the format string */
|
327 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
328 | a03f7874 | Anthony Liguori | iter++; |
329 | a03f7874 | Anthony Liguori | switch (*iter) {
|
330 | a03f7874 | Anthony Liguori | case 'u': |
331 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
332 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
333 | a03f7874 | Anthony Liguori | break;
|
334 | a03f7874 | Anthony Liguori | case 's': |
335 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
|
336 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
337 | a03f7874 | Anthony Liguori | break;
|
338 | a03f7874 | Anthony Liguori | case 'c': |
339 | a03f7874 | Anthony Liguori | len += 1;
|
340 | a03f7874 | Anthony Liguori | break;
|
341 | a03f7874 | Anthony Liguori | default:
|
342 | a03f7874 | Anthony Liguori | fprintf(stderr, |
343 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
|
344 | a03f7874 | Anthony Liguori | return -1; |
345 | a03f7874 | Anthony Liguori | } |
346 | a03f7874 | Anthony Liguori | iter++; |
347 | a03f7874 | Anthony Liguori | } |
348 | a03f7874 | Anthony Liguori | |
349 | a03f7874 | Anthony Liguori | alloc_print:
|
350 | a03f7874 | Anthony Liguori | *strp = qemu_malloc((len + 1) * sizeof(**strp)); |
351 | a03f7874 | Anthony Liguori | |
352 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
|
353 | a03f7874 | Anthony Liguori | } |
354 | a03f7874 | Anthony Liguori | |
355 | a03f7874 | Anthony Liguori | static void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
356 | a03f7874 | Anthony Liguori | { |
357 | a03f7874 | Anthony Liguori | va_list ap; |
358 | a03f7874 | Anthony Liguori | int err;
|
359 | a03f7874 | Anthony Liguori | |
360 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
361 | a03f7874 | Anthony Liguori | |
362 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
363 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
364 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
|
365 | a03f7874 | Anthony Liguori | va_end(ap); |
366 | a03f7874 | Anthony Liguori | |
367 | a03f7874 | Anthony Liguori | str->size = err; |
368 | a03f7874 | Anthony Liguori | } |
369 | a03f7874 | Anthony Liguori | |
370 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
371 | a03f7874 | Anthony Liguori | { |
372 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
373 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
|
374 | a03f7874 | Anthony Liguori | } |
375 | a03f7874 | Anthony Liguori | |
376 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
|
377 | a03f7874 | Anthony Liguori | { |
378 | a03f7874 | Anthony Liguori | return str->size;
|
379 | a03f7874 | Anthony Liguori | } |
380 | a03f7874 | Anthony Liguori | |
381 | 286d5652 | Anthony Liguori | static V9fsFidState *lookup_fid(V9fsState *s, int32_t fid)
|
382 | 286d5652 | Anthony Liguori | { |
383 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
384 | 286d5652 | Anthony Liguori | |
385 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
|
386 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
|
387 | 286d5652 | Anthony Liguori | return f;
|
388 | 286d5652 | Anthony Liguori | } |
389 | 286d5652 | Anthony Liguori | } |
390 | 286d5652 | Anthony Liguori | |
391 | 286d5652 | Anthony Liguori | return NULL; |
392 | 286d5652 | Anthony Liguori | } |
393 | 286d5652 | Anthony Liguori | |
394 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
|
395 | 286d5652 | Anthony Liguori | { |
396 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
397 | 286d5652 | Anthony Liguori | |
398 | 286d5652 | Anthony Liguori | f = lookup_fid(s, fid); |
399 | 286d5652 | Anthony Liguori | if (f) {
|
400 | 286d5652 | Anthony Liguori | return NULL; |
401 | 286d5652 | Anthony Liguori | } |
402 | 286d5652 | Anthony Liguori | |
403 | 286d5652 | Anthony Liguori | f = qemu_mallocz(sizeof(V9fsFidState));
|
404 | 286d5652 | Anthony Liguori | |
405 | 286d5652 | Anthony Liguori | f->fid = fid; |
406 | 286d5652 | Anthony Liguori | f->fd = -1;
|
407 | 286d5652 | Anthony Liguori | f->dir = NULL;
|
408 | 286d5652 | Anthony Liguori | |
409 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
410 | 286d5652 | Anthony Liguori | s->fid_list = f; |
411 | 286d5652 | Anthony Liguori | |
412 | 286d5652 | Anthony Liguori | return f;
|
413 | 286d5652 | Anthony Liguori | } |
414 | 286d5652 | Anthony Liguori | |
415 | 286d5652 | Anthony Liguori | static int free_fid(V9fsState *s, int32_t fid) |
416 | 286d5652 | Anthony Liguori | { |
417 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
418 | 286d5652 | Anthony Liguori | |
419 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
420 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
421 | 286d5652 | Anthony Liguori | break;
|
422 | 286d5652 | Anthony Liguori | } |
423 | 286d5652 | Anthony Liguori | } |
424 | 286d5652 | Anthony Liguori | |
425 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
426 | 286d5652 | Anthony Liguori | return -ENOENT;
|
427 | 286d5652 | Anthony Liguori | } |
428 | 286d5652 | Anthony Liguori | |
429 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
430 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
431 | 286d5652 | Anthony Liguori | |
432 | 286d5652 | Anthony Liguori | if (fidp->fd != -1) { |
433 | 286d5652 | Anthony Liguori | v9fs_do_close(s, fidp->fd); |
434 | 286d5652 | Anthony Liguori | } |
435 | 286d5652 | Anthony Liguori | if (fidp->dir) {
|
436 | 286d5652 | Anthony Liguori | v9fs_do_closedir(s, fidp->dir); |
437 | 286d5652 | Anthony Liguori | } |
438 | 286d5652 | Anthony Liguori | v9fs_string_free(&fidp->path); |
439 | 286d5652 | Anthony Liguori | qemu_free(fidp); |
440 | 286d5652 | Anthony Liguori | |
441 | 286d5652 | Anthony Liguori | return 0; |
442 | 286d5652 | Anthony Liguori | } |
443 | 286d5652 | Anthony Liguori | |
444 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
445 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
446 | 286d5652 | Anthony Liguori | |
447 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
448 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
449 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
450 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
451 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
452 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
453 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
454 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
455 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
456 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
457 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
458 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
459 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
460 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
461 | 286d5652 | Anthony Liguori | |
462 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
463 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
464 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
465 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
466 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
467 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
468 | 286d5652 | Anthony Liguori | |
469 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
470 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
471 | 286d5652 | Anthony Liguori | { |
472 | 286d5652 | Anthony Liguori | size_t size; |
473 | 286d5652 | Anthony Liguori | |
474 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
475 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
476 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
477 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
478 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
479 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
480 | 286d5652 | Anthony Liguori | } |
481 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
482 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
483 | 286d5652 | Anthony Liguori | } |
484 | 286d5652 | Anthony Liguori | } |
485 | 286d5652 | Anthony Liguori | |
486 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
487 | 286d5652 | Anthony Liguori | { |
488 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
489 | 286d5652 | Anthony Liguori | int err;
|
490 | 286d5652 | Anthony Liguori | |
491 | 286d5652 | Anthony Liguori | err = v9fs_do_lstat(s, &fidp->path, &stbuf); |
492 | 286d5652 | Anthony Liguori | if (err) {
|
493 | 286d5652 | Anthony Liguori | return err;
|
494 | 286d5652 | Anthony Liguori | } |
495 | 286d5652 | Anthony Liguori | |
496 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
497 | 286d5652 | Anthony Liguori | return 0; |
498 | 286d5652 | Anthony Liguori | } |
499 | 286d5652 | Anthony Liguori | |
500 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
501 | 9f107513 | Anthony Liguori | { |
502 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
503 | 9f107513 | Anthony Liguori | |
504 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
505 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
506 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
507 | 9f107513 | Anthony Liguori | } |
508 | 9f107513 | Anthony Liguori | return pdu;
|
509 | 9f107513 | Anthony Liguori | } |
510 | 9f107513 | Anthony Liguori | |
511 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
512 | 9f107513 | Anthony Liguori | { |
513 | 9f107513 | Anthony Liguori | if (pdu) {
|
514 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
515 | 9f107513 | Anthony Liguori | } |
516 | 9f107513 | Anthony Liguori | } |
517 | 9f107513 | Anthony Liguori | |
518 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
519 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
520 | 9f107513 | Anthony Liguori | { |
521 | 9f107513 | Anthony Liguori | int i = 0; |
522 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
523 | 9f107513 | Anthony Liguori | |
524 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
525 | 9f107513 | Anthony Liguori | size_t len; |
526 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
527 | 9f107513 | Anthony Liguori | /* skip this sg */
|
528 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
529 | 9f107513 | Anthony Liguori | continue;
|
530 | 9f107513 | Anthony Liguori | } else {
|
531 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
532 | 9f107513 | Anthony Liguori | if (pack) {
|
533 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
534 | 9f107513 | Anthony Liguori | } else {
|
535 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
536 | 9f107513 | Anthony Liguori | } |
537 | 9f107513 | Anthony Liguori | size -= len; |
538 | 9f107513 | Anthony Liguori | copied += len; |
539 | 9f107513 | Anthony Liguori | addr += len; |
540 | 9f107513 | Anthony Liguori | if (size) {
|
541 | 9f107513 | Anthony Liguori | offset = 0;
|
542 | 9f107513 | Anthony Liguori | continue;
|
543 | 9f107513 | Anthony Liguori | } |
544 | 9f107513 | Anthony Liguori | } |
545 | 9f107513 | Anthony Liguori | } |
546 | 9f107513 | Anthony Liguori | |
547 | 9f107513 | Anthony Liguori | return copied;
|
548 | 9f107513 | Anthony Liguori | } |
549 | 9f107513 | Anthony Liguori | |
550 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
551 | 405a549a | Anthony Liguori | { |
552 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
553 | 405a549a | Anthony Liguori | offset, size, 0);
|
554 | 405a549a | Anthony Liguori | } |
555 | 405a549a | Anthony Liguori | |
556 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
557 | 405a549a | Anthony Liguori | size_t size) |
558 | 405a549a | Anthony Liguori | { |
559 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
560 | 405a549a | Anthony Liguori | offset, size, 1);
|
561 | 405a549a | Anthony Liguori | } |
562 | 405a549a | Anthony Liguori | |
563 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
564 | 405a549a | Anthony Liguori | { |
565 | 405a549a | Anthony Liguori | size_t pos = 0;
|
566 | 405a549a | Anthony Liguori | int i, j;
|
567 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
568 | 405a549a | Anthony Liguori | unsigned int num; |
569 | 405a549a | Anthony Liguori | |
570 | 405a549a | Anthony Liguori | if (rx) {
|
571 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
572 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
573 | 405a549a | Anthony Liguori | } else {
|
574 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
575 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
576 | 405a549a | Anthony Liguori | } |
577 | 405a549a | Anthony Liguori | |
578 | 405a549a | Anthony Liguori | j = 0;
|
579 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
580 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
581 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
582 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
583 | 405a549a | Anthony Liguori | j++; |
584 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
585 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
586 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
587 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
588 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
589 | 405a549a | Anthony Liguori | j++; |
590 | 405a549a | Anthony Liguori | } |
591 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
592 | 405a549a | Anthony Liguori | } |
593 | 405a549a | Anthony Liguori | |
594 | 405a549a | Anthony Liguori | return j;
|
595 | 405a549a | Anthony Liguori | } |
596 | 405a549a | Anthony Liguori | |
597 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
598 | 405a549a | Anthony Liguori | { |
599 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
600 | 405a549a | Anthony Liguori | va_list ap; |
601 | 405a549a | Anthony Liguori | int i;
|
602 | 405a549a | Anthony Liguori | |
603 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
604 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
605 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
606 | 405a549a | Anthony Liguori | case 'b': { |
607 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
608 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
609 | 405a549a | Anthony Liguori | break;
|
610 | 405a549a | Anthony Liguori | } |
611 | 405a549a | Anthony Liguori | case 'w': { |
612 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
613 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
614 | 405a549a | Anthony Liguori | val = le16_to_cpupu(valp); |
615 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
616 | 405a549a | Anthony Liguori | *valp = val; |
617 | 405a549a | Anthony Liguori | break;
|
618 | 405a549a | Anthony Liguori | } |
619 | 405a549a | Anthony Liguori | case 'd': { |
620 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
621 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
622 | 405a549a | Anthony Liguori | val = le32_to_cpupu(valp); |
623 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
624 | 405a549a | Anthony Liguori | *valp = val; |
625 | 405a549a | Anthony Liguori | break;
|
626 | 405a549a | Anthony Liguori | } |
627 | 405a549a | Anthony Liguori | case 'q': { |
628 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
629 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
630 | 405a549a | Anthony Liguori | val = le64_to_cpup(valp); |
631 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
632 | 405a549a | Anthony Liguori | *valp = val; |
633 | 405a549a | Anthony Liguori | break;
|
634 | 405a549a | Anthony Liguori | } |
635 | 405a549a | Anthony Liguori | case 'v': { |
636 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
637 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
638 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
639 | 405a549a | Anthony Liguori | break;
|
640 | 405a549a | Anthony Liguori | } |
641 | 405a549a | Anthony Liguori | case 's': { |
642 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
643 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
644 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
645 | 405a549a | Anthony Liguori | str->data = qemu_malloc(str->size + 1);
|
646 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
647 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
648 | 405a549a | Anthony Liguori | break;
|
649 | 405a549a | Anthony Liguori | } |
650 | 405a549a | Anthony Liguori | case 'Q': { |
651 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
652 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
653 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
654 | 405a549a | Anthony Liguori | break;
|
655 | 405a549a | Anthony Liguori | } |
656 | 405a549a | Anthony Liguori | case 'S': { |
657 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
658 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
659 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
660 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
661 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
662 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
663 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
664 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
665 | 405a549a | Anthony Liguori | &statp->n_muid); |
666 | 405a549a | Anthony Liguori | break;
|
667 | 405a549a | Anthony Liguori | } |
668 | c79ce737 | Sripathi Kodi | case 'I': { |
669 | c79ce737 | Sripathi Kodi | V9fsIattr *iattr = va_arg(ap, V9fsIattr *); |
670 | c79ce737 | Sripathi Kodi | offset += pdu_unmarshal(pdu, offset, "ddddqqqqq",
|
671 | c79ce737 | Sripathi Kodi | &iattr->valid, &iattr->mode, |
672 | c79ce737 | Sripathi Kodi | &iattr->uid, &iattr->gid, &iattr->size, |
673 | c79ce737 | Sripathi Kodi | &iattr->atime_sec, &iattr->atime_nsec, |
674 | c79ce737 | Sripathi Kodi | &iattr->mtime_sec, &iattr->mtime_nsec); |
675 | c79ce737 | Sripathi Kodi | break;
|
676 | c79ce737 | Sripathi Kodi | } |
677 | 405a549a | Anthony Liguori | default:
|
678 | 405a549a | Anthony Liguori | break;
|
679 | 405a549a | Anthony Liguori | } |
680 | 405a549a | Anthony Liguori | } |
681 | 405a549a | Anthony Liguori | |
682 | 405a549a | Anthony Liguori | va_end(ap); |
683 | 405a549a | Anthony Liguori | |
684 | 405a549a | Anthony Liguori | return offset - old_offset;
|
685 | 405a549a | Anthony Liguori | } |
686 | 405a549a | Anthony Liguori | |
687 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
688 | 405a549a | Anthony Liguori | { |
689 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
690 | 405a549a | Anthony Liguori | va_list ap; |
691 | 405a549a | Anthony Liguori | int i;
|
692 | 405a549a | Anthony Liguori | |
693 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
694 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
695 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
696 | 405a549a | Anthony Liguori | case 'b': { |
697 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
698 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
699 | 405a549a | Anthony Liguori | break;
|
700 | 405a549a | Anthony Liguori | } |
701 | 405a549a | Anthony Liguori | case 'w': { |
702 | 405a549a | Anthony Liguori | uint16_t val; |
703 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
704 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
705 | 405a549a | Anthony Liguori | break;
|
706 | 405a549a | Anthony Liguori | } |
707 | 405a549a | Anthony Liguori | case 'd': { |
708 | 405a549a | Anthony Liguori | uint32_t val; |
709 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
710 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
711 | 405a549a | Anthony Liguori | break;
|
712 | 405a549a | Anthony Liguori | } |
713 | 405a549a | Anthony Liguori | case 'q': { |
714 | 405a549a | Anthony Liguori | uint64_t val; |
715 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
716 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
717 | 405a549a | Anthony Liguori | break;
|
718 | 405a549a | Anthony Liguori | } |
719 | 405a549a | Anthony Liguori | case 'v': { |
720 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
721 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
722 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
723 | 405a549a | Anthony Liguori | break;
|
724 | 405a549a | Anthony Liguori | } |
725 | 405a549a | Anthony Liguori | case 's': { |
726 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
727 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
728 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
729 | 405a549a | Anthony Liguori | break;
|
730 | 405a549a | Anthony Liguori | } |
731 | 405a549a | Anthony Liguori | case 'Q': { |
732 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
733 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
734 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
735 | 405a549a | Anthony Liguori | break;
|
736 | 405a549a | Anthony Liguori | } |
737 | 405a549a | Anthony Liguori | case 'S': { |
738 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
739 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
740 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
741 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
742 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
743 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
744 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
745 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
746 | 405a549a | Anthony Liguori | break;
|
747 | 405a549a | Anthony Liguori | } |
748 | 00ede4c2 | Sripathi Kodi | case 'A': { |
749 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *statp = va_arg(ap, V9fsStatDotl *); |
750 | 00ede4c2 | Sripathi Kodi | offset += pdu_marshal(pdu, offset, "qQdddqqqqqqqqqqqqqqq",
|
751 | 00ede4c2 | Sripathi Kodi | statp->st_result_mask, |
752 | 00ede4c2 | Sripathi Kodi | &statp->qid, statp->st_mode, |
753 | 00ede4c2 | Sripathi Kodi | statp->st_uid, statp->st_gid, |
754 | 00ede4c2 | Sripathi Kodi | statp->st_nlink, statp->st_rdev, |
755 | 00ede4c2 | Sripathi Kodi | statp->st_size, statp->st_blksize, statp->st_blocks, |
756 | 00ede4c2 | Sripathi Kodi | statp->st_atime_sec, statp->st_atime_nsec, |
757 | 00ede4c2 | Sripathi Kodi | statp->st_mtime_sec, statp->st_mtime_nsec, |
758 | 00ede4c2 | Sripathi Kodi | statp->st_ctime_sec, statp->st_ctime_nsec, |
759 | 00ede4c2 | Sripathi Kodi | statp->st_btime_sec, statp->st_btime_nsec, |
760 | 00ede4c2 | Sripathi Kodi | statp->st_gen, statp->st_data_version); |
761 | 00ede4c2 | Sripathi Kodi | break;
|
762 | 00ede4c2 | Sripathi Kodi | } |
763 | 405a549a | Anthony Liguori | default:
|
764 | 405a549a | Anthony Liguori | break;
|
765 | 405a549a | Anthony Liguori | } |
766 | 405a549a | Anthony Liguori | } |
767 | 405a549a | Anthony Liguori | va_end(ap); |
768 | 405a549a | Anthony Liguori | |
769 | 405a549a | Anthony Liguori | return offset - old_offset;
|
770 | 405a549a | Anthony Liguori | } |
771 | 405a549a | Anthony Liguori | |
772 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
773 | 405a549a | Anthony Liguori | { |
774 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
775 | 405a549a | Anthony Liguori | |
776 | 405a549a | Anthony Liguori | if (len < 0) { |
777 | 405a549a | Anthony Liguori | V9fsString str; |
778 | 405a549a | Anthony Liguori | int err = -len;
|
779 | 405a549a | Anthony Liguori | |
780 | 405a549a | Anthony Liguori | str.data = strerror(err); |
781 | 405a549a | Anthony Liguori | str.size = strlen(str.data); |
782 | 405a549a | Anthony Liguori | |
783 | 405a549a | Anthony Liguori | len = 7;
|
784 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "s", &str);
|
785 | 405a549a | Anthony Liguori | if (dotu) {
|
786 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "d", err);
|
787 | 405a549a | Anthony Liguori | } |
788 | 405a549a | Anthony Liguori | |
789 | 405a549a | Anthony Liguori | id = P9_RERROR; |
790 | 405a549a | Anthony Liguori | } |
791 | 405a549a | Anthony Liguori | |
792 | 405a549a | Anthony Liguori | /* fill out the header */
|
793 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
794 | 405a549a | Anthony Liguori | |
795 | 405a549a | Anthony Liguori | /* keep these in sync */
|
796 | 405a549a | Anthony Liguori | pdu->size = len; |
797 | 405a549a | Anthony Liguori | pdu->id = id; |
798 | 405a549a | Anthony Liguori | |
799 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
800 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
801 | 405a549a | Anthony Liguori | |
802 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
803 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
804 | 405a549a | Anthony Liguori | |
805 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
806 | 405a549a | Anthony Liguori | } |
807 | 405a549a | Anthony Liguori | |
808 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
809 | bb9e3216 | Anthony Liguori | { |
810 | bb9e3216 | Anthony Liguori | mode_t ret; |
811 | bb9e3216 | Anthony Liguori | |
812 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
813 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
814 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
815 | bb9e3216 | Anthony Liguori | } |
816 | bb9e3216 | Anthony Liguori | |
817 | bb9e3216 | Anthony Liguori | if (dotu) {
|
818 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SYMLINK) {
|
819 | bb9e3216 | Anthony Liguori | ret |= S_IFLNK; |
820 | bb9e3216 | Anthony Liguori | } |
821 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SOCKET) {
|
822 | bb9e3216 | Anthony Liguori | ret |= S_IFSOCK; |
823 | bb9e3216 | Anthony Liguori | } |
824 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
825 | bb9e3216 | Anthony Liguori | ret |= S_IFIFO; |
826 | bb9e3216 | Anthony Liguori | } |
827 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DEVICE) {
|
828 | bb9e3216 | Anthony Liguori | if (extension && extension->data[0] == 'c') { |
829 | bb9e3216 | Anthony Liguori | ret |= S_IFCHR; |
830 | bb9e3216 | Anthony Liguori | } else {
|
831 | bb9e3216 | Anthony Liguori | ret |= S_IFBLK; |
832 | bb9e3216 | Anthony Liguori | } |
833 | bb9e3216 | Anthony Liguori | } |
834 | bb9e3216 | Anthony Liguori | } |
835 | bb9e3216 | Anthony Liguori | |
836 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
837 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
838 | bb9e3216 | Anthony Liguori | } |
839 | bb9e3216 | Anthony Liguori | |
840 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
841 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
842 | bb9e3216 | Anthony Liguori | } |
843 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
844 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
845 | bb9e3216 | Anthony Liguori | } |
846 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
847 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
848 | bb9e3216 | Anthony Liguori | } |
849 | bb9e3216 | Anthony Liguori | |
850 | bb9e3216 | Anthony Liguori | return ret;
|
851 | bb9e3216 | Anthony Liguori | } |
852 | bb9e3216 | Anthony Liguori | |
853 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
854 | bb9e3216 | Anthony Liguori | { |
855 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
856 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
857 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
858 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
859 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
860 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
861 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
862 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
863 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
864 | bb9e3216 | Anthony Liguori | !stat->name.size && |
865 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
866 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
867 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
868 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
869 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
870 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
871 | bb9e3216 | Anthony Liguori | return 1; |
872 | bb9e3216 | Anthony Liguori | } |
873 | bb9e3216 | Anthony Liguori | |
874 | bb9e3216 | Anthony Liguori | return 0; |
875 | bb9e3216 | Anthony Liguori | } |
876 | bb9e3216 | Anthony Liguori | |
877 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
878 | bb9e3216 | Anthony Liguori | { |
879 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
880 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
881 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
882 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
883 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
884 | bb9e3216 | Anthony Liguori | } |
885 | bb9e3216 | Anthony Liguori | |
886 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
887 | bb9e3216 | Anthony Liguori | { |
888 | bb9e3216 | Anthony Liguori | uint32_t mode; |
889 | bb9e3216 | Anthony Liguori | |
890 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
891 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
892 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
893 | bb9e3216 | Anthony Liguori | } |
894 | bb9e3216 | Anthony Liguori | |
895 | bb9e3216 | Anthony Liguori | if (dotu) {
|
896 | bb9e3216 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
897 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SYMLINK; |
898 | bb9e3216 | Anthony Liguori | } |
899 | bb9e3216 | Anthony Liguori | |
900 | bb9e3216 | Anthony Liguori | if (S_ISSOCK(stbuf->st_mode)) {
|
901 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SOCKET; |
902 | bb9e3216 | Anthony Liguori | } |
903 | bb9e3216 | Anthony Liguori | |
904 | bb9e3216 | Anthony Liguori | if (S_ISFIFO(stbuf->st_mode)) {
|
905 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_NAMED_PIPE; |
906 | bb9e3216 | Anthony Liguori | } |
907 | bb9e3216 | Anthony Liguori | |
908 | bb9e3216 | Anthony Liguori | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
909 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DEVICE; |
910 | bb9e3216 | Anthony Liguori | } |
911 | bb9e3216 | Anthony Liguori | |
912 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISUID) {
|
913 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETUID; |
914 | bb9e3216 | Anthony Liguori | } |
915 | bb9e3216 | Anthony Liguori | |
916 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISGID) {
|
917 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETGID; |
918 | bb9e3216 | Anthony Liguori | } |
919 | bb9e3216 | Anthony Liguori | |
920 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISVTX) {
|
921 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETVTX; |
922 | bb9e3216 | Anthony Liguori | } |
923 | bb9e3216 | Anthony Liguori | } |
924 | bb9e3216 | Anthony Liguori | |
925 | bb9e3216 | Anthony Liguori | return mode;
|
926 | bb9e3216 | Anthony Liguori | } |
927 | bb9e3216 | Anthony Liguori | |
928 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
929 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
930 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
931 | bb9e3216 | Anthony Liguori | { |
932 | bb9e3216 | Anthony Liguori | int err;
|
933 | bb9e3216 | Anthony Liguori | const char *str; |
934 | bb9e3216 | Anthony Liguori | |
935 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
936 | bb9e3216 | Anthony Liguori | |
937 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
938 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
939 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
940 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
941 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
942 | bb9e3216 | Anthony Liguori | |
943 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
944 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
945 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
946 | bb9e3216 | Anthony Liguori | |
947 | bb9e3216 | Anthony Liguori | if (dotu) {
|
948 | bb9e3216 | Anthony Liguori | v9stat->n_uid = stbuf->st_uid; |
949 | bb9e3216 | Anthony Liguori | v9stat->n_gid = stbuf->st_gid; |
950 | bb9e3216 | Anthony Liguori | v9stat->n_muid = 0;
|
951 | bb9e3216 | Anthony Liguori | |
952 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->extension); |
953 | bb9e3216 | Anthony Liguori | |
954 | bb9e3216 | Anthony Liguori | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
955 | bb9e3216 | Anthony Liguori | err = v9fs_do_readlink(s, name, &v9stat->extension); |
956 | bb9e3216 | Anthony Liguori | if (err == -1) { |
957 | bb9e3216 | Anthony Liguori | err = -errno; |
958 | bb9e3216 | Anthony Liguori | return err;
|
959 | bb9e3216 | Anthony Liguori | } |
960 | bb9e3216 | Anthony Liguori | v9stat->extension.data[err] = 0;
|
961 | bb9e3216 | Anthony Liguori | v9stat->extension.size = err; |
962 | bb9e3216 | Anthony Liguori | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
963 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
964 | bb9e3216 | Anthony Liguori | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
965 | bb9e3216 | Anthony Liguori | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
966 | bb9e3216 | Anthony Liguori | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
967 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%s %u",
|
968 | bb9e3216 | Anthony Liguori | "HARDLINKCOUNT", stbuf->st_nlink);
|
969 | bb9e3216 | Anthony Liguori | } |
970 | bb9e3216 | Anthony Liguori | } |
971 | bb9e3216 | Anthony Liguori | |
972 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
973 | bb9e3216 | Anthony Liguori | if (str) {
|
974 | bb9e3216 | Anthony Liguori | str += 1;
|
975 | bb9e3216 | Anthony Liguori | } else {
|
976 | bb9e3216 | Anthony Liguori | str = name->data; |
977 | bb9e3216 | Anthony Liguori | } |
978 | bb9e3216 | Anthony Liguori | |
979 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
980 | bb9e3216 | Anthony Liguori | |
981 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
982 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
983 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
984 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
985 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
986 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
987 | bb9e3216 | Anthony Liguori | return 0; |
988 | bb9e3216 | Anthony Liguori | } |
989 | bb9e3216 | Anthony Liguori | |
990 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MODE 0x00000001ULL |
991 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_NLINK 0x00000002ULL |
992 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_UID 0x00000004ULL |
993 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GID 0x00000008ULL |
994 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_RDEV 0x00000010ULL |
995 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ATIME 0x00000020ULL |
996 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MTIME 0x00000040ULL |
997 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_CTIME 0x00000080ULL |
998 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_INO 0x00000100ULL |
999 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_SIZE 0x00000200ULL |
1000 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BLOCKS 0x00000400ULL |
1001 | 00ede4c2 | Sripathi Kodi | |
1002 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BTIME 0x00000800ULL |
1003 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GEN 0x00001000ULL |
1004 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_DATA_VERSION 0x00002000ULL |
1005 | 00ede4c2 | Sripathi Kodi | |
1006 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ |
1007 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ |
1008 | 00ede4c2 | Sripathi Kodi | |
1009 | 00ede4c2 | Sripathi Kodi | |
1010 | 00ede4c2 | Sripathi Kodi | static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, |
1011 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *v9lstat) |
1012 | 00ede4c2 | Sripathi Kodi | { |
1013 | 00ede4c2 | Sripathi Kodi | memset(v9lstat, 0, sizeof(*v9lstat)); |
1014 | 00ede4c2 | Sripathi Kodi | |
1015 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mode = stbuf->st_mode; |
1016 | 00ede4c2 | Sripathi Kodi | v9lstat->st_nlink = stbuf->st_nlink; |
1017 | 00ede4c2 | Sripathi Kodi | v9lstat->st_uid = stbuf->st_uid; |
1018 | 00ede4c2 | Sripathi Kodi | v9lstat->st_gid = stbuf->st_gid; |
1019 | 00ede4c2 | Sripathi Kodi | v9lstat->st_rdev = stbuf->st_rdev; |
1020 | 00ede4c2 | Sripathi Kodi | v9lstat->st_size = stbuf->st_size; |
1021 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blksize = stbuf->st_blksize; |
1022 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blocks = stbuf->st_blocks; |
1023 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_sec = stbuf->st_atime; |
1024 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; |
1025 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_sec = stbuf->st_mtime; |
1026 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; |
1027 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_sec = stbuf->st_ctime; |
1028 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; |
1029 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat */
|
1030 | 00ede4c2 | Sripathi Kodi | v9lstat->st_result_mask = P9_STATS_BASIC; |
1031 | 00ede4c2 | Sripathi Kodi | |
1032 | 00ede4c2 | Sripathi Kodi | stat_to_qid(stbuf, &v9lstat->qid); |
1033 | 00ede4c2 | Sripathi Kodi | } |
1034 | 00ede4c2 | Sripathi Kodi | |
1035 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
1036 | 1f5a89bf | Anthony Liguori | { |
1037 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
1038 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
1039 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
1040 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
1041 | 1f5a89bf | Anthony Liguori | len = 0;
|
1042 | 1f5a89bf | Anthony Liguori | } else {
|
1043 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
1044 | 1f5a89bf | Anthony Liguori | sg++; |
1045 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
1046 | 1f5a89bf | Anthony Liguori | } |
1047 | 1f5a89bf | Anthony Liguori | } |
1048 | 1f5a89bf | Anthony Liguori | |
1049 | 1f5a89bf | Anthony Liguori | return sg;
|
1050 | 1f5a89bf | Anthony Liguori | } |
1051 | 1f5a89bf | Anthony Liguori | |
1052 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
1053 | 1f5a89bf | Anthony Liguori | { |
1054 | 1f5a89bf | Anthony Liguori | int i;
|
1055 | 1f5a89bf | Anthony Liguori | int total = 0; |
1056 | 1f5a89bf | Anthony Liguori | |
1057 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
1058 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
1059 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
1060 | 1f5a89bf | Anthony Liguori | i++; |
1061 | 1f5a89bf | Anthony Liguori | break;
|
1062 | 1f5a89bf | Anthony Liguori | } |
1063 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
1064 | 1f5a89bf | Anthony Liguori | } |
1065 | 1f5a89bf | Anthony Liguori | |
1066 | 1f5a89bf | Anthony Liguori | *cnt = i; |
1067 | 1f5a89bf | Anthony Liguori | |
1068 | 1f5a89bf | Anthony Liguori | return sg;
|
1069 | 1f5a89bf | Anthony Liguori | } |
1070 | 1f5a89bf | Anthony Liguori | |
1071 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
1072 | 1f5a89bf | Anthony Liguori | { |
1073 | 1f5a89bf | Anthony Liguori | int i;
|
1074 | 1f5a89bf | Anthony Liguori | |
1075 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
1076 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
1077 | 1f5a89bf | Anthony Liguori | if (i) {
|
1078 | 1f5a89bf | Anthony Liguori | printf(", ");
|
1079 | 1f5a89bf | Anthony Liguori | } |
1080 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
1081 | 1f5a89bf | Anthony Liguori | } |
1082 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
1083 | 1f5a89bf | Anthony Liguori | } |
1084 | 1f5a89bf | Anthony Liguori | |
1085 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
1086 | 8cf89e00 | Anthony Liguori | { |
1087 | 8cf89e00 | Anthony Liguori | V9fsString str; |
1088 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
1089 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
1090 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
1091 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
1092 | 8cf89e00 | Anthony Liguori | } |
1093 | 8cf89e00 | Anthony Liguori | |
1094 | 9f107513 | Anthony Liguori | static void v9fs_version(V9fsState *s, V9fsPDU *pdu) |
1095 | 9f107513 | Anthony Liguori | { |
1096 | 92c1ad03 | Anthony Liguori | V9fsString version; |
1097 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
1098 | 92c1ad03 | Anthony Liguori | |
1099 | 5e94c103 | M. Mohan Kumar | pdu_unmarshal(pdu, offset, "ds", &s->msize, &version);
|
1100 | 92c1ad03 | Anthony Liguori | |
1101 | 84151514 | M. Mohan Kumar | if (!strcmp(version.data, "9P2000.u")) { |
1102 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000U; |
1103 | 84151514 | M. Mohan Kumar | } else if (!strcmp(version.data, "9P2000.L")) { |
1104 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000L; |
1105 | 84151514 | M. Mohan Kumar | } else {
|
1106 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
1107 | 9f107513 | Anthony Liguori | } |
1108 | 92c1ad03 | Anthony Liguori | |
1109 | 5e94c103 | M. Mohan Kumar | offset += pdu_marshal(pdu, offset, "ds", s->msize, &version);
|
1110 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
1111 | 92c1ad03 | Anthony Liguori | |
1112 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
1113 | 9f107513 | Anthony Liguori | } |
1114 | 9f107513 | Anthony Liguori | |
1115 | 9f107513 | Anthony Liguori | static void v9fs_attach(V9fsState *s, V9fsPDU *pdu) |
1116 | 9f107513 | Anthony Liguori | { |
1117 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
1118 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
1119 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
1120 | 955efc47 | Anthony Liguori | V9fsQID qid; |
1121 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
1122 | 955efc47 | Anthony Liguori | ssize_t err; |
1123 | 955efc47 | Anthony Liguori | |
1124 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
1125 | 955efc47 | Anthony Liguori | |
1126 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
1127 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
1128 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1129 | 955efc47 | Anthony Liguori | goto out;
|
1130 | 9f107513 | Anthony Liguori | } |
1131 | 955efc47 | Anthony Liguori | |
1132 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
1133 | 955efc47 | Anthony Liguori | |
1134 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
1135 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
1136 | 955efc47 | Anthony Liguori | if (err) {
|
1137 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1138 | 955efc47 | Anthony Liguori | free_fid(s, fid); |
1139 | 955efc47 | Anthony Liguori | goto out;
|
1140 | 955efc47 | Anthony Liguori | } |
1141 | 955efc47 | Anthony Liguori | |
1142 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
1143 | 955efc47 | Anthony Liguori | |
1144 | 955efc47 | Anthony Liguori | err = offset; |
1145 | 955efc47 | Anthony Liguori | out:
|
1146 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
1147 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
1148 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1149 | 9f107513 | Anthony Liguori | } |
1150 | 9f107513 | Anthony Liguori | |
1151 | 4da7d3fa | Anthony Liguori | static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err) |
1152 | 4da7d3fa | Anthony Liguori | { |
1153 | 4da7d3fa | Anthony Liguori | if (err == -1) { |
1154 | 4da7d3fa | Anthony Liguori | err = -errno; |
1155 | 4da7d3fa | Anthony Liguori | goto out;
|
1156 | 4da7d3fa | Anthony Liguori | } |
1157 | 4da7d3fa | Anthony Liguori | |
1158 | 4da7d3fa | Anthony Liguori | err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat); |
1159 | 4da7d3fa | Anthony Liguori | if (err) {
|
1160 | 4da7d3fa | Anthony Liguori | goto out;
|
1161 | 4da7d3fa | Anthony Liguori | } |
1162 | 4da7d3fa | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat); |
1163 | 4da7d3fa | Anthony Liguori | err = vs->offset; |
1164 | 4da7d3fa | Anthony Liguori | |
1165 | 4da7d3fa | Anthony Liguori | out:
|
1166 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1167 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1168 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1169 | 4da7d3fa | Anthony Liguori | } |
1170 | 4da7d3fa | Anthony Liguori | |
1171 | 9f107513 | Anthony Liguori | static void v9fs_stat(V9fsState *s, V9fsPDU *pdu) |
1172 | 9f107513 | Anthony Liguori | { |
1173 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1174 | 4da7d3fa | Anthony Liguori | V9fsStatState *vs; |
1175 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1176 | 4da7d3fa | Anthony Liguori | |
1177 | 4da7d3fa | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1178 | 4da7d3fa | Anthony Liguori | vs->pdu = pdu; |
1179 | 4da7d3fa | Anthony Liguori | vs->offset = 7;
|
1180 | 4da7d3fa | Anthony Liguori | |
1181 | 4da7d3fa | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1182 | 4da7d3fa | Anthony Liguori | |
1183 | 4da7d3fa | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1184 | 4da7d3fa | Anthony Liguori | |
1185 | 4da7d3fa | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1186 | 4da7d3fa | Anthony Liguori | if (vs->fidp == NULL) { |
1187 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1188 | 4da7d3fa | Anthony Liguori | goto out;
|
1189 | 9f107513 | Anthony Liguori | } |
1190 | 4da7d3fa | Anthony Liguori | |
1191 | 4da7d3fa | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1192 | 4da7d3fa | Anthony Liguori | v9fs_stat_post_lstat(s, vs, err); |
1193 | 4da7d3fa | Anthony Liguori | return;
|
1194 | 4da7d3fa | Anthony Liguori | |
1195 | 4da7d3fa | Anthony Liguori | out:
|
1196 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1197 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1198 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1199 | 9f107513 | Anthony Liguori | } |
1200 | 9f107513 | Anthony Liguori | |
1201 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr_post_lstat(V9fsState *s, V9fsStatStateDotl *vs, |
1202 | 00ede4c2 | Sripathi Kodi | int err)
|
1203 | 00ede4c2 | Sripathi Kodi | { |
1204 | 00ede4c2 | Sripathi Kodi | if (err == -1) { |
1205 | 00ede4c2 | Sripathi Kodi | err = -errno; |
1206 | 00ede4c2 | Sripathi Kodi | goto out;
|
1207 | 00ede4c2 | Sripathi Kodi | } |
1208 | 00ede4c2 | Sripathi Kodi | |
1209 | 00ede4c2 | Sripathi Kodi | stat_to_v9stat_dotl(s, &vs->stbuf, &vs->v9stat_dotl); |
1210 | 00ede4c2 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "A", &vs->v9stat_dotl);
|
1211 | 00ede4c2 | Sripathi Kodi | err = vs->offset; |
1212 | 00ede4c2 | Sripathi Kodi | |
1213 | 00ede4c2 | Sripathi Kodi | out:
|
1214 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1215 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1216 | 00ede4c2 | Sripathi Kodi | } |
1217 | 00ede4c2 | Sripathi Kodi | |
1218 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr(V9fsState *s, V9fsPDU *pdu) |
1219 | 00ede4c2 | Sripathi Kodi | { |
1220 | 00ede4c2 | Sripathi Kodi | int32_t fid; |
1221 | 00ede4c2 | Sripathi Kodi | V9fsStatStateDotl *vs; |
1222 | 00ede4c2 | Sripathi Kodi | ssize_t err = 0;
|
1223 | 00ede4c2 | Sripathi Kodi | V9fsFidState *fidp; |
1224 | 00ede4c2 | Sripathi Kodi | uint64_t request_mask; |
1225 | 00ede4c2 | Sripathi Kodi | |
1226 | 00ede4c2 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1227 | 00ede4c2 | Sripathi Kodi | vs->pdu = pdu; |
1228 | 00ede4c2 | Sripathi Kodi | vs->offset = 7;
|
1229 | 00ede4c2 | Sripathi Kodi | |
1230 | 00ede4c2 | Sripathi Kodi | memset(&vs->v9stat_dotl, 0, sizeof(vs->v9stat_dotl)); |
1231 | 00ede4c2 | Sripathi Kodi | |
1232 | 00ede4c2 | Sripathi Kodi | pdu_unmarshal(vs->pdu, vs->offset, "dq", &fid, &request_mask);
|
1233 | 00ede4c2 | Sripathi Kodi | |
1234 | 00ede4c2 | Sripathi Kodi | fidp = lookup_fid(s, fid); |
1235 | 00ede4c2 | Sripathi Kodi | if (fidp == NULL) { |
1236 | 00ede4c2 | Sripathi Kodi | err = -ENOENT; |
1237 | 00ede4c2 | Sripathi Kodi | goto out;
|
1238 | 00ede4c2 | Sripathi Kodi | } |
1239 | 00ede4c2 | Sripathi Kodi | |
1240 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat, so there is no
|
1241 | 00ede4c2 | Sripathi Kodi | * need to look at request_mask.
|
1242 | 00ede4c2 | Sripathi Kodi | */
|
1243 | 00ede4c2 | Sripathi Kodi | err = v9fs_do_lstat(s, &fidp->path, &vs->stbuf); |
1244 | 00ede4c2 | Sripathi Kodi | v9fs_getattr_post_lstat(s, vs, err); |
1245 | 00ede4c2 | Sripathi Kodi | return;
|
1246 | 00ede4c2 | Sripathi Kodi | |
1247 | 00ede4c2 | Sripathi Kodi | out:
|
1248 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1249 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1250 | 00ede4c2 | Sripathi Kodi | } |
1251 | 00ede4c2 | Sripathi Kodi | |
1252 | c79ce737 | Sripathi Kodi | /* From Linux kernel code */
|
1253 | c79ce737 | Sripathi Kodi | #define ATTR_MODE (1 << 0) |
1254 | c79ce737 | Sripathi Kodi | #define ATTR_UID (1 << 1) |
1255 | c79ce737 | Sripathi Kodi | #define ATTR_GID (1 << 2) |
1256 | c79ce737 | Sripathi Kodi | #define ATTR_SIZE (1 << 3) |
1257 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME (1 << 4) |
1258 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME (1 << 5) |
1259 | c79ce737 | Sripathi Kodi | #define ATTR_CTIME (1 << 6) |
1260 | c79ce737 | Sripathi Kodi | #define ATTR_MASK 127 |
1261 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME_SET (1 << 7) |
1262 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME_SET (1 << 8) |
1263 | c79ce737 | Sripathi Kodi | |
1264 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_truncate(V9fsState *s, V9fsSetattrState *vs, |
1265 | c79ce737 | Sripathi Kodi | int err)
|
1266 | c79ce737 | Sripathi Kodi | { |
1267 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1268 | c79ce737 | Sripathi Kodi | err = -errno; |
1269 | c79ce737 | Sripathi Kodi | goto out;
|
1270 | c79ce737 | Sripathi Kodi | } |
1271 | c79ce737 | Sripathi Kodi | err = vs->offset; |
1272 | c79ce737 | Sripathi Kodi | |
1273 | c79ce737 | Sripathi Kodi | out:
|
1274 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1275 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1276 | c79ce737 | Sripathi Kodi | } |
1277 | c79ce737 | Sripathi Kodi | |
1278 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chown(V9fsState *s, V9fsSetattrState *vs, int err) |
1279 | c79ce737 | Sripathi Kodi | { |
1280 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1281 | c79ce737 | Sripathi Kodi | err = -errno; |
1282 | c79ce737 | Sripathi Kodi | goto out;
|
1283 | c79ce737 | Sripathi Kodi | } |
1284 | c79ce737 | Sripathi Kodi | |
1285 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_SIZE)) {
|
1286 | c79ce737 | Sripathi Kodi | err = v9fs_do_truncate(s, &vs->fidp->path, vs->v9iattr.size); |
1287 | c79ce737 | Sripathi Kodi | } |
1288 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_truncate(s, vs, err); |
1289 | c79ce737 | Sripathi Kodi | return;
|
1290 | c79ce737 | Sripathi Kodi | |
1291 | c79ce737 | Sripathi Kodi | out:
|
1292 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1293 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1294 | c79ce737 | Sripathi Kodi | } |
1295 | c79ce737 | Sripathi Kodi | |
1296 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_utimensat(V9fsState *s, V9fsSetattrState *vs, |
1297 | c79ce737 | Sripathi Kodi | int err)
|
1298 | c79ce737 | Sripathi Kodi | { |
1299 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1300 | c79ce737 | Sripathi Kodi | err = -errno; |
1301 | c79ce737 | Sripathi Kodi | goto out;
|
1302 | c79ce737 | Sripathi Kodi | } |
1303 | c79ce737 | Sripathi Kodi | |
1304 | c79ce737 | Sripathi Kodi | /* If the only valid entry in iattr is ctime we can call
|
1305 | c79ce737 | Sripathi Kodi | * chown(-1,-1) to update the ctime of the file
|
1306 | c79ce737 | Sripathi Kodi | */
|
1307 | c79ce737 | Sripathi Kodi | if ((vs->v9iattr.valid & (ATTR_UID | ATTR_GID)) ||
|
1308 | c79ce737 | Sripathi Kodi | ((vs->v9iattr.valid & ATTR_CTIME) |
1309 | c79ce737 | Sripathi Kodi | && !((vs->v9iattr.valid & ATTR_MASK) & ~ATTR_CTIME))) { |
1310 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_UID)) {
|
1311 | c79ce737 | Sripathi Kodi | vs->v9iattr.uid = -1;
|
1312 | c79ce737 | Sripathi Kodi | } |
1313 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_GID)) {
|
1314 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid = -1;
|
1315 | c79ce737 | Sripathi Kodi | } |
1316 | c79ce737 | Sripathi Kodi | err = v9fs_do_chown(s, &vs->fidp->path, vs->v9iattr.uid, |
1317 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid); |
1318 | c79ce737 | Sripathi Kodi | } |
1319 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chown(s, vs, err); |
1320 | c79ce737 | Sripathi Kodi | return;
|
1321 | c79ce737 | Sripathi Kodi | |
1322 | c79ce737 | Sripathi Kodi | out:
|
1323 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1324 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1325 | c79ce737 | Sripathi Kodi | } |
1326 | c79ce737 | Sripathi Kodi | |
1327 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chmod(V9fsState *s, V9fsSetattrState *vs, int err) |
1328 | c79ce737 | Sripathi Kodi | { |
1329 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1330 | c79ce737 | Sripathi Kodi | err = -errno; |
1331 | c79ce737 | Sripathi Kodi | goto out;
|
1332 | c79ce737 | Sripathi Kodi | } |
1333 | c79ce737 | Sripathi Kodi | |
1334 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_ATIME | ATTR_MTIME)) {
|
1335 | c79ce737 | Sripathi Kodi | struct timespec times[2]; |
1336 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME) {
|
1337 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME_SET) {
|
1338 | c79ce737 | Sripathi Kodi | times[0].tv_sec = vs->v9iattr.atime_sec;
|
1339 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = vs->v9iattr.atime_nsec;
|
1340 | c79ce737 | Sripathi Kodi | } else {
|
1341 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_NOW;
|
1342 | c79ce737 | Sripathi Kodi | } |
1343 | c79ce737 | Sripathi Kodi | } else {
|
1344 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
1345 | c79ce737 | Sripathi Kodi | } |
1346 | c79ce737 | Sripathi Kodi | |
1347 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME) {
|
1348 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME_SET) {
|
1349 | c79ce737 | Sripathi Kodi | times[1].tv_sec = vs->v9iattr.mtime_sec;
|
1350 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = vs->v9iattr.mtime_nsec;
|
1351 | c79ce737 | Sripathi Kodi | } else {
|
1352 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_NOW;
|
1353 | c79ce737 | Sripathi Kodi | } |
1354 | c79ce737 | Sripathi Kodi | } else {
|
1355 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
1356 | c79ce737 | Sripathi Kodi | } |
1357 | c79ce737 | Sripathi Kodi | err = v9fs_do_utimensat(s, &vs->fidp->path, times); |
1358 | c79ce737 | Sripathi Kodi | } |
1359 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_utimensat(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(V9fsState *s, V9fsPDU *pdu) |
1368 | c79ce737 | Sripathi Kodi | { |
1369 | c79ce737 | Sripathi Kodi | int32_t fid; |
1370 | c79ce737 | Sripathi Kodi | V9fsSetattrState *vs; |
1371 | c79ce737 | Sripathi Kodi | int err = 0; |
1372 | c79ce737 | Sripathi Kodi | |
1373 | c79ce737 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1374 | c79ce737 | Sripathi Kodi | vs->pdu = pdu; |
1375 | c79ce737 | Sripathi Kodi | vs->offset = 7;
|
1376 | c79ce737 | Sripathi Kodi | |
1377 | c79ce737 | Sripathi Kodi | pdu_unmarshal(pdu, vs->offset, "dI", &fid, &vs->v9iattr);
|
1378 | c79ce737 | Sripathi Kodi | |
1379 | c79ce737 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
1380 | c79ce737 | Sripathi Kodi | if (vs->fidp == NULL) { |
1381 | c79ce737 | Sripathi Kodi | err = -EINVAL; |
1382 | c79ce737 | Sripathi Kodi | goto out;
|
1383 | c79ce737 | Sripathi Kodi | } |
1384 | c79ce737 | Sripathi Kodi | |
1385 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MODE) {
|
1386 | c79ce737 | Sripathi Kodi | err = v9fs_do_chmod(s, &vs->fidp->path, vs->v9iattr.mode); |
1387 | c79ce737 | Sripathi Kodi | } |
1388 | c79ce737 | Sripathi Kodi | |
1389 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chmod(s, vs, err); |
1390 | c79ce737 | Sripathi Kodi | return;
|
1391 | c79ce737 | Sripathi Kodi | |
1392 | c79ce737 | Sripathi Kodi | out:
|
1393 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1394 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1395 | c79ce737 | Sripathi Kodi | } |
1396 | c79ce737 | Sripathi Kodi | |
1397 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_complete(V9fsState *s, V9fsWalkState *vs, int err) |
1398 | ff5e54c9 | Anthony Liguori | { |
1399 | ff5e54c9 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1400 | ff5e54c9 | Anthony Liguori | |
1401 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1402 | ff5e54c9 | Anthony Liguori | for (vs->name_idx = 0; vs->name_idx < vs->nwnames; vs->name_idx++) { |
1403 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->wnames[vs->name_idx]); |
1404 | ff5e54c9 | Anthony Liguori | } |
1405 | ff5e54c9 | Anthony Liguori | |
1406 | ff5e54c9 | Anthony Liguori | qemu_free(vs->wnames); |
1407 | ff5e54c9 | Anthony Liguori | qemu_free(vs->qids); |
1408 | ff5e54c9 | Anthony Liguori | } |
1409 | ff5e54c9 | Anthony Liguori | } |
1410 | ff5e54c9 | Anthony Liguori | |
1411 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_marshal(V9fsWalkState *vs) |
1412 | ff5e54c9 | Anthony Liguori | { |
1413 | ff5e54c9 | Anthony Liguori | int i;
|
1414 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1415 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "w", vs->nwnames);
|
1416 | ff5e54c9 | Anthony Liguori | |
1417 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1418 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qids[i]);
|
1419 | ff5e54c9 | Anthony Liguori | } |
1420 | ff5e54c9 | Anthony Liguori | } |
1421 | ff5e54c9 | Anthony Liguori | |
1422 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_newfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1423 | ff5e54c9 | Anthony Liguori | int err)
|
1424 | ff5e54c9 | Anthony Liguori | { |
1425 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1426 | ff5e54c9 | Anthony Liguori | free_fid(s, vs->newfidp->fid); |
1427 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1428 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1429 | ff5e54c9 | Anthony Liguori | goto out;
|
1430 | ff5e54c9 | Anthony Liguori | } |
1431 | ff5e54c9 | Anthony Liguori | |
1432 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1433 | ff5e54c9 | Anthony Liguori | |
1434 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1435 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1436 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1437 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1438 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1439 | ff5e54c9 | Anthony Liguori | |
1440 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1441 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1442 | ff5e54c9 | Anthony Liguori | return;
|
1443 | ff5e54c9 | Anthony Liguori | } |
1444 | ff5e54c9 | Anthony Liguori | |
1445 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1446 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1447 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1448 | ff5e54c9 | Anthony Liguori | out:
|
1449 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1450 | ff5e54c9 | Anthony Liguori | } |
1451 | ff5e54c9 | Anthony Liguori | |
1452 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_oldfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1453 | ff5e54c9 | Anthony Liguori | int err)
|
1454 | ff5e54c9 | Anthony Liguori | { |
1455 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1456 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1457 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1458 | ff5e54c9 | Anthony Liguori | goto out;
|
1459 | ff5e54c9 | Anthony Liguori | } |
1460 | ff5e54c9 | Anthony Liguori | |
1461 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1462 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1463 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1464 | ff5e54c9 | Anthony Liguori | |
1465 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1466 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1467 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1468 | ff5e54c9 | Anthony Liguori | |
1469 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1470 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1471 | ff5e54c9 | Anthony Liguori | return;
|
1472 | ff5e54c9 | Anthony Liguori | } |
1473 | ff5e54c9 | Anthony Liguori | |
1474 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1475 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1476 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1477 | ff5e54c9 | Anthony Liguori | out:
|
1478 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1479 | ff5e54c9 | Anthony Liguori | } |
1480 | ff5e54c9 | Anthony Liguori | |
1481 | 9f107513 | Anthony Liguori | static void v9fs_walk(V9fsState *s, V9fsPDU *pdu) |
1482 | 9f107513 | Anthony Liguori | { |
1483 | ff5e54c9 | Anthony Liguori | int32_t fid, newfid; |
1484 | ff5e54c9 | Anthony Liguori | V9fsWalkState *vs; |
1485 | ff5e54c9 | Anthony Liguori | int err = 0; |
1486 | ff5e54c9 | Anthony Liguori | int i;
|
1487 | ff5e54c9 | Anthony Liguori | |
1488 | ff5e54c9 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1489 | ff5e54c9 | Anthony Liguori | vs->pdu = pdu; |
1490 | ff5e54c9 | Anthony Liguori | vs->wnames = NULL;
|
1491 | ff5e54c9 | Anthony Liguori | vs->qids = NULL;
|
1492 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1493 | ff5e54c9 | Anthony Liguori | |
1494 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "ddw", &fid,
|
1495 | ff5e54c9 | Anthony Liguori | &newfid, &vs->nwnames); |
1496 | ff5e54c9 | Anthony Liguori | |
1497 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1498 | ff5e54c9 | Anthony Liguori | vs->wnames = qemu_mallocz(sizeof(vs->wnames[0]) * vs->nwnames); |
1499 | ff5e54c9 | Anthony Liguori | |
1500 | ff5e54c9 | Anthony Liguori | vs->qids = qemu_mallocz(sizeof(vs->qids[0]) * vs->nwnames); |
1501 | ff5e54c9 | Anthony Liguori | |
1502 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1503 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "s",
|
1504 | ff5e54c9 | Anthony Liguori | &vs->wnames[i]); |
1505 | ff5e54c9 | Anthony Liguori | } |
1506 | ff5e54c9 | Anthony Liguori | } |
1507 | ff5e54c9 | Anthony Liguori | |
1508 | ff5e54c9 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1509 | ff5e54c9 | Anthony Liguori | if (vs->fidp == NULL) { |
1510 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1511 | ff5e54c9 | Anthony Liguori | goto out;
|
1512 | ff5e54c9 | Anthony Liguori | } |
1513 | ff5e54c9 | Anthony Liguori | |
1514 | ff5e54c9 | Anthony Liguori | /* FIXME: is this really valid? */
|
1515 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1516 | ff5e54c9 | Anthony Liguori | |
1517 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1518 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1519 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1520 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1521 | ff5e54c9 | Anthony Liguori | |
1522 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1523 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1524 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1525 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1526 | ff5e54c9 | Anthony Liguori | |
1527 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1528 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1529 | ff5e54c9 | Anthony Liguori | return;
|
1530 | ff5e54c9 | Anthony Liguori | } |
1531 | ff5e54c9 | Anthony Liguori | } else {
|
1532 | ff5e54c9 | Anthony Liguori | vs->newfidp = alloc_fid(s, newfid); |
1533 | ff5e54c9 | Anthony Liguori | if (vs->newfidp == NULL) { |
1534 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1535 | ff5e54c9 | Anthony Liguori | goto out;
|
1536 | ff5e54c9 | Anthony Liguori | } |
1537 | ff5e54c9 | Anthony Liguori | |
1538 | ff5e54c9 | Anthony Liguori | vs->newfidp->uid = vs->fidp->uid; |
1539 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1540 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1541 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->fidp->path); |
1542 | ff5e54c9 | Anthony Liguori | |
1543 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1544 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1545 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1546 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1547 | ff5e54c9 | Anthony Liguori | |
1548 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1549 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1550 | ff5e54c9 | Anthony Liguori | return;
|
1551 | ff5e54c9 | Anthony Liguori | } |
1552 | 9f107513 | Anthony Liguori | } |
1553 | ff5e54c9 | Anthony Liguori | |
1554 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1555 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1556 | ff5e54c9 | Anthony Liguori | out:
|
1557 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1558 | 9f107513 | Anthony Liguori | } |
1559 | 9f107513 | Anthony Liguori | |
1560 | 5e94c103 | M. Mohan Kumar | static int32_t get_iounit(V9fsState *s, V9fsString *name)
|
1561 | 5e94c103 | M. Mohan Kumar | { |
1562 | 5e94c103 | M. Mohan Kumar | struct statfs stbuf;
|
1563 | 5e94c103 | M. Mohan Kumar | int32_t iounit = 0;
|
1564 | 5e94c103 | M. Mohan Kumar | |
1565 | 5e94c103 | M. Mohan Kumar | /*
|
1566 | 5e94c103 | M. Mohan Kumar | * iounit should be multiples of f_bsize (host filesystem block size
|
1567 | 5e94c103 | M. Mohan Kumar | * and as well as less than (client msize - P9_IOHDRSZ))
|
1568 | 5e94c103 | M. Mohan Kumar | */
|
1569 | 5e94c103 | M. Mohan Kumar | if (!v9fs_do_statfs(s, name, &stbuf)) {
|
1570 | 5e94c103 | M. Mohan Kumar | iounit = stbuf.f_bsize; |
1571 | 5e94c103 | M. Mohan Kumar | iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; |
1572 | 5e94c103 | M. Mohan Kumar | } |
1573 | 5e94c103 | M. Mohan Kumar | |
1574 | 5e94c103 | M. Mohan Kumar | if (!iounit) {
|
1575 | 5e94c103 | M. Mohan Kumar | iounit = s->msize - P9_IOHDRSZ; |
1576 | 5e94c103 | M. Mohan Kumar | } |
1577 | 5e94c103 | M. Mohan Kumar | return iounit;
|
1578 | 5e94c103 | M. Mohan Kumar | } |
1579 | 5e94c103 | M. Mohan Kumar | |
1580 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_opendir(V9fsState *s, V9fsOpenState *vs, int err) |
1581 | a6568fe2 | Anthony Liguori | { |
1582 | a6568fe2 | Anthony Liguori | if (vs->fidp->dir == NULL) { |
1583 | a6568fe2 | Anthony Liguori | err = -errno; |
1584 | a6568fe2 | Anthony Liguori | goto out;
|
1585 | a6568fe2 | Anthony Liguori | } |
1586 | a6568fe2 | Anthony Liguori | |
1587 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1588 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1589 | a6568fe2 | Anthony Liguori | out:
|
1590 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1591 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1592 | a6568fe2 | Anthony Liguori | |
1593 | a6568fe2 | Anthony Liguori | } |
1594 | a6568fe2 | Anthony Liguori | |
1595 | 5e94c103 | M. Mohan Kumar | static void v9fs_open_post_getiounit(V9fsState *s, V9fsOpenState *vs) |
1596 | 5e94c103 | M. Mohan Kumar | { |
1597 | 5e94c103 | M. Mohan Kumar | int err;
|
1598 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
1599 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
1600 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
1601 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
1602 | 5e94c103 | M. Mohan Kumar | } |
1603 | 5e94c103 | M. Mohan Kumar | |
1604 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_open(V9fsState *s, V9fsOpenState *vs, int err) |
1605 | a6568fe2 | Anthony Liguori | { |
1606 | a6568fe2 | Anthony Liguori | if (vs->fidp->fd == -1) { |
1607 | a6568fe2 | Anthony Liguori | err = -errno; |
1608 | a6568fe2 | Anthony Liguori | goto out;
|
1609 | a6568fe2 | Anthony Liguori | } |
1610 | a6568fe2 | Anthony Liguori | |
1611 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
1612 | 5e94c103 | M. Mohan Kumar | v9fs_open_post_getiounit(s, vs); |
1613 | 5e94c103 | M. Mohan Kumar | return;
|
1614 | a6568fe2 | Anthony Liguori | out:
|
1615 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1616 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1617 | a6568fe2 | Anthony Liguori | } |
1618 | a6568fe2 | Anthony Liguori | |
1619 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) |
1620 | a6568fe2 | Anthony Liguori | { |
1621 | a6568fe2 | Anthony Liguori | if (err) {
|
1622 | a6568fe2 | Anthony Liguori | err = -errno; |
1623 | a6568fe2 | Anthony Liguori | goto out;
|
1624 | a6568fe2 | Anthony Liguori | } |
1625 | a6568fe2 | Anthony Liguori | |
1626 | a6568fe2 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1627 | a6568fe2 | Anthony Liguori | |
1628 | a6568fe2 | Anthony Liguori | if (S_ISDIR(vs->stbuf.st_mode)) {
|
1629 | a6568fe2 | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fidp->path); |
1630 | a6568fe2 | Anthony Liguori | v9fs_open_post_opendir(s, vs, err); |
1631 | a6568fe2 | Anthony Liguori | } else {
|
1632 | a6568fe2 | Anthony Liguori | vs->fidp->fd = v9fs_do_open(s, &vs->fidp->path, |
1633 | a6568fe2 | Anthony Liguori | omode_to_uflags(vs->mode)); |
1634 | a6568fe2 | Anthony Liguori | v9fs_open_post_open(s, vs, err); |
1635 | a6568fe2 | Anthony Liguori | } |
1636 | a6568fe2 | Anthony Liguori | return;
|
1637 | a6568fe2 | Anthony Liguori | out:
|
1638 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1639 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1640 | 9f107513 | Anthony Liguori | } |
1641 | 9f107513 | Anthony Liguori | |
1642 | 9f107513 | Anthony Liguori | static void v9fs_open(V9fsState *s, V9fsPDU *pdu) |
1643 | a6568fe2 | Anthony Liguori | { |
1644 | a6568fe2 | Anthony Liguori | int32_t fid; |
1645 | a6568fe2 | Anthony Liguori | V9fsOpenState *vs; |
1646 | a6568fe2 | Anthony Liguori | ssize_t err = 0;
|
1647 | a6568fe2 | Anthony Liguori | |
1648 | a6568fe2 | Anthony Liguori | |
1649 | a6568fe2 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1650 | a6568fe2 | Anthony Liguori | vs->pdu = pdu; |
1651 | a6568fe2 | Anthony Liguori | vs->offset = 7;
|
1652 | a6568fe2 | Anthony Liguori | |
1653 | a6568fe2 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "db", &fid, &vs->mode);
|
1654 | a6568fe2 | Anthony Liguori | |
1655 | a6568fe2 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1656 | a6568fe2 | Anthony Liguori | if (vs->fidp == NULL) { |
1657 | a6568fe2 | Anthony Liguori | err = -ENOENT; |
1658 | a6568fe2 | Anthony Liguori | goto out;
|
1659 | a6568fe2 | Anthony Liguori | } |
1660 | a6568fe2 | Anthony Liguori | |
1661 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1662 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1663 | a6568fe2 | Anthony Liguori | |
1664 | a6568fe2 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1665 | a6568fe2 | Anthony Liguori | |
1666 | a6568fe2 | Anthony Liguori | v9fs_open_post_lstat(s, vs, err); |
1667 | a6568fe2 | Anthony Liguori | return;
|
1668 | a6568fe2 | Anthony Liguori | out:
|
1669 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1670 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1671 | a6568fe2 | Anthony Liguori | } |
1672 | a6568fe2 | Anthony Liguori | |
1673 | a6568fe2 | Anthony Liguori | static void v9fs_clunk(V9fsState *s, V9fsPDU *pdu) |
1674 | a6568fe2 | Anthony Liguori | { |
1675 | bbd5697b | Anthony Liguori | int32_t fid; |
1676 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1677 | bbd5697b | Anthony Liguori | int err;
|
1678 | bbd5697b | Anthony Liguori | |
1679 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1680 | bbd5697b | Anthony Liguori | |
1681 | bbd5697b | Anthony Liguori | err = free_fid(s, fid); |
1682 | bbd5697b | Anthony Liguori | if (err < 0) { |
1683 | bbd5697b | Anthony Liguori | goto out;
|
1684 | a6568fe2 | Anthony Liguori | } |
1685 | bbd5697b | Anthony Liguori | |
1686 | bbd5697b | Anthony Liguori | offset = 7;
|
1687 | bbd5697b | Anthony Liguori | err = offset; |
1688 | bbd5697b | Anthony Liguori | out:
|
1689 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1690 | 9f107513 | Anthony Liguori | } |
1691 | 9f107513 | Anthony Liguori | |
1692 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *, V9fsReadState *, ssize_t); |
1693 | a9231555 | Anthony Liguori | |
1694 | a9231555 | Anthony Liguori | static void v9fs_read_post_seekdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1695 | a9231555 | Anthony Liguori | { |
1696 | a9231555 | Anthony Liguori | if (err) {
|
1697 | a9231555 | Anthony Liguori | goto out;
|
1698 | a9231555 | Anthony Liguori | } |
1699 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1700 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1701 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1702 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1703 | a9231555 | Anthony Liguori | err = vs->offset; |
1704 | a9231555 | Anthony Liguori | out:
|
1705 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1706 | a9231555 | Anthony Liguori | qemu_free(vs); |
1707 | a9231555 | Anthony Liguori | return;
|
1708 | a9231555 | Anthony Liguori | } |
1709 | a9231555 | Anthony Liguori | |
1710 | a9231555 | Anthony Liguori | static void v9fs_read_post_dir_lstat(V9fsState *s, V9fsReadState *vs, |
1711 | a9231555 | Anthony Liguori | ssize_t err) |
1712 | a9231555 | Anthony Liguori | { |
1713 | a9231555 | Anthony Liguori | if (err) {
|
1714 | a9231555 | Anthony Liguori | err = -errno; |
1715 | a9231555 | Anthony Liguori | goto out;
|
1716 | a9231555 | Anthony Liguori | } |
1717 | a9231555 | Anthony Liguori | err = stat_to_v9stat(s, &vs->name, &vs->stbuf, &vs->v9stat); |
1718 | a9231555 | Anthony Liguori | if (err) {
|
1719 | a9231555 | Anthony Liguori | goto out;
|
1720 | a9231555 | Anthony Liguori | } |
1721 | a9231555 | Anthony Liguori | |
1722 | a9231555 | Anthony Liguori | vs->len = pdu_marshal(vs->pdu, vs->offset + 4 + vs->count, "S", |
1723 | a9231555 | Anthony Liguori | &vs->v9stat); |
1724 | a9231555 | Anthony Liguori | if ((vs->len != (vs->v9stat.size + 2)) || |
1725 | a9231555 | Anthony Liguori | ((vs->count + vs->len) > vs->max_count)) { |
1726 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1727 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1728 | a9231555 | Anthony Liguori | return;
|
1729 | a9231555 | Anthony Liguori | } |
1730 | a9231555 | Anthony Liguori | vs->count += vs->len; |
1731 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1732 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1733 | a9231555 | Anthony Liguori | vs->dir_pos = vs->dent->d_off; |
1734 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1735 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1736 | a9231555 | Anthony Liguori | return;
|
1737 | a9231555 | Anthony Liguori | out:
|
1738 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1739 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1740 | a9231555 | Anthony Liguori | return;
|
1741 | a9231555 | Anthony Liguori | |
1742 | a9231555 | Anthony Liguori | } |
1743 | a9231555 | Anthony Liguori | |
1744 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1745 | a9231555 | Anthony Liguori | { |
1746 | a9231555 | Anthony Liguori | if (vs->dent) {
|
1747 | a9231555 | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1748 | a9231555 | Anthony Liguori | v9fs_string_init(&vs->name); |
1749 | a9231555 | Anthony Liguori | v9fs_string_sprintf(&vs->name, "%s/%s", vs->fidp->path.data,
|
1750 | a9231555 | Anthony Liguori | vs->dent->d_name); |
1751 | a9231555 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->name, &vs->stbuf); |
1752 | a9231555 | Anthony Liguori | v9fs_read_post_dir_lstat(s, vs, err); |
1753 | a9231555 | Anthony Liguori | return;
|
1754 | a9231555 | Anthony Liguori | } |
1755 | a9231555 | Anthony Liguori | |
1756 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1757 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1758 | a9231555 | Anthony Liguori | err = vs->offset; |
1759 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1760 | a9231555 | Anthony Liguori | qemu_free(vs); |
1761 | a9231555 | Anthony Liguori | return;
|
1762 | a9231555 | Anthony Liguori | } |
1763 | a9231555 | Anthony Liguori | |
1764 | a9231555 | Anthony Liguori | static void v9fs_read_post_telldir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1765 | a9231555 | Anthony Liguori | { |
1766 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1767 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1768 | a9231555 | Anthony Liguori | return;
|
1769 | a9231555 | Anthony Liguori | } |
1770 | a9231555 | Anthony Liguori | |
1771 | a9231555 | Anthony Liguori | static void v9fs_read_post_rewinddir(V9fsState *s, V9fsReadState *vs, |
1772 | a9231555 | Anthony Liguori | ssize_t err) |
1773 | a9231555 | Anthony Liguori | { |
1774 | a9231555 | Anthony Liguori | vs->dir_pos = v9fs_do_telldir(s, vs->fidp->dir); |
1775 | a9231555 | Anthony Liguori | v9fs_read_post_telldir(s, vs, err); |
1776 | a9231555 | Anthony Liguori | return;
|
1777 | a9231555 | Anthony Liguori | } |
1778 | a9231555 | Anthony Liguori | |
1779 | a9231555 | Anthony Liguori | static void v9fs_read_post_readv(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1780 | a9231555 | Anthony Liguori | { |
1781 | a9231555 | Anthony Liguori | if (err < 0) { |
1782 | a9231555 | Anthony Liguori | /* IO error return the error */
|
1783 | a9231555 | Anthony Liguori | err = -errno; |
1784 | a9231555 | Anthony Liguori | goto out;
|
1785 | a9231555 | Anthony Liguori | } |
1786 | a9231555 | Anthony Liguori | vs->total += vs->len; |
1787 | a9231555 | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1788 | a9231555 | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1789 | a9231555 | Anthony Liguori | do {
|
1790 | a9231555 | Anthony Liguori | if (0) { |
1791 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1792 | a9231555 | Anthony Liguori | } |
1793 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1794 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1795 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1796 | a9231555 | Anthony Liguori | err = -errno; |
1797 | a9231555 | Anthony Liguori | } |
1798 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1799 | a9231555 | Anthony Liguori | return;
|
1800 | a9231555 | Anthony Liguori | } |
1801 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1802 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1803 | a9231555 | Anthony Liguori | err = vs->offset; |
1804 | a9231555 | Anthony Liguori | |
1805 | a9231555 | Anthony Liguori | out:
|
1806 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1807 | a9231555 | Anthony Liguori | qemu_free(vs); |
1808 | a9231555 | Anthony Liguori | } |
1809 | a9231555 | Anthony Liguori | |
1810 | a9231555 | Anthony Liguori | static void v9fs_read_post_lseek(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1811 | a9231555 | Anthony Liguori | { |
1812 | a9231555 | Anthony Liguori | if (err == -1) { |
1813 | a9231555 | Anthony Liguori | err = -errno; |
1814 | a9231555 | Anthony Liguori | goto out;
|
1815 | a9231555 | Anthony Liguori | } |
1816 | a9231555 | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1817 | a9231555 | Anthony Liguori | |
1818 | a9231555 | Anthony Liguori | if (vs->total < vs->count) {
|
1819 | a9231555 | Anthony Liguori | do {
|
1820 | a9231555 | Anthony Liguori | if (0) { |
1821 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1822 | a9231555 | Anthony Liguori | } |
1823 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1824 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1825 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1826 | a9231555 | Anthony Liguori | err = -errno; |
1827 | a9231555 | Anthony Liguori | } |
1828 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1829 | a9231555 | Anthony Liguori | return;
|
1830 | a9231555 | Anthony Liguori | } |
1831 | a9231555 | Anthony Liguori | out:
|
1832 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1833 | a9231555 | Anthony Liguori | qemu_free(vs); |
1834 | a9231555 | Anthony Liguori | } |
1835 | a9231555 | Anthony Liguori | |
1836 | 9f107513 | Anthony Liguori | static void v9fs_read(V9fsState *s, V9fsPDU *pdu) |
1837 | 9f107513 | Anthony Liguori | { |
1838 | a9231555 | Anthony Liguori | int32_t fid; |
1839 | a9231555 | Anthony Liguori | V9fsReadState *vs; |
1840 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
1841 | a9231555 | Anthony Liguori | |
1842 | a9231555 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1843 | a9231555 | Anthony Liguori | vs->pdu = pdu; |
1844 | a9231555 | Anthony Liguori | vs->offset = 7;
|
1845 | a9231555 | Anthony Liguori | vs->total = 0;
|
1846 | a9231555 | Anthony Liguori | vs->len = 0;
|
1847 | a9231555 | Anthony Liguori | vs->count = 0;
|
1848 | a9231555 | Anthony Liguori | |
1849 | a9231555 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqd", &fid, &vs->off, &vs->count);
|
1850 | a9231555 | Anthony Liguori | |
1851 | a9231555 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1852 | a9231555 | Anthony Liguori | if (vs->fidp == NULL) { |
1853 | a9231555 | Anthony Liguori | err = -EINVAL; |
1854 | a9231555 | Anthony Liguori | goto out;
|
1855 | a9231555 | Anthony Liguori | } |
1856 | a9231555 | Anthony Liguori | |
1857 | a9231555 | Anthony Liguori | if (vs->fidp->dir) {
|
1858 | a9231555 | Anthony Liguori | vs->max_count = vs->count; |
1859 | a9231555 | Anthony Liguori | vs->count = 0;
|
1860 | a9231555 | Anthony Liguori | if (vs->off == 0) { |
1861 | a9231555 | Anthony Liguori | v9fs_do_rewinddir(s, vs->fidp->dir); |
1862 | a9231555 | Anthony Liguori | } |
1863 | a9231555 | Anthony Liguori | v9fs_read_post_rewinddir(s, vs, err); |
1864 | a9231555 | Anthony Liguori | return;
|
1865 | a9231555 | Anthony Liguori | } else if (vs->fidp->fd != -1) { |
1866 | a9231555 | Anthony Liguori | vs->sg = vs->iov; |
1867 | a9231555 | Anthony Liguori | pdu_marshal(vs->pdu, vs->offset + 4, "v", vs->sg, &vs->cnt); |
1868 | a9231555 | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
1869 | a9231555 | Anthony Liguori | v9fs_read_post_lseek(s, vs, err); |
1870 | a9231555 | Anthony Liguori | return;
|
1871 | a9231555 | Anthony Liguori | } else {
|
1872 | a9231555 | Anthony Liguori | err = -EINVAL; |
1873 | 9f107513 | Anthony Liguori | } |
1874 | a9231555 | Anthony Liguori | out:
|
1875 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
1876 | a9231555 | Anthony Liguori | qemu_free(vs); |
1877 | 9f107513 | Anthony Liguori | } |
1878 | 9f107513 | Anthony Liguori | |
1879 | c18e2f94 | Sripathi Kodi | typedef struct V9fsReadDirState { |
1880 | c18e2f94 | Sripathi Kodi | V9fsPDU *pdu; |
1881 | c18e2f94 | Sripathi Kodi | V9fsFidState *fidp; |
1882 | c18e2f94 | Sripathi Kodi | V9fsQID qid; |
1883 | c18e2f94 | Sripathi Kodi | off_t saved_dir_pos; |
1884 | c18e2f94 | Sripathi Kodi | struct dirent *dent;
|
1885 | c18e2f94 | Sripathi Kodi | int32_t count; |
1886 | c18e2f94 | Sripathi Kodi | int32_t max_count; |
1887 | c18e2f94 | Sripathi Kodi | size_t offset; |
1888 | c18e2f94 | Sripathi Kodi | int64_t initial_offset; |
1889 | c18e2f94 | Sripathi Kodi | V9fsString name; |
1890 | c18e2f94 | Sripathi Kodi | } V9fsReadDirState; |
1891 | c18e2f94 | Sripathi Kodi | |
1892 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_seekdir(V9fsState *s, V9fsReadDirState *vs) |
1893 | c18e2f94 | Sripathi Kodi | { |
1894 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1895 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
1896 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
1897 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
1898 | c18e2f94 | Sripathi Kodi | return;
|
1899 | c18e2f94 | Sripathi Kodi | } |
1900 | c18e2f94 | Sripathi Kodi | |
1901 | c18e2f94 | Sripathi Kodi | /* Size of each dirent on the wire: size of qid (13) + size of offset (8)
|
1902 | c18e2f94 | Sripathi Kodi | * size of type (1) + size of name.size (2) + strlen(name.data)
|
1903 | c18e2f94 | Sripathi Kodi | */
|
1904 | c18e2f94 | Sripathi Kodi | #define V9_READDIR_DATA_SZ (24 + strlen(vs->name.data)) |
1905 | c18e2f94 | Sripathi Kodi | |
1906 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_readdir(V9fsState *s, V9fsReadDirState *vs) |
1907 | c18e2f94 | Sripathi Kodi | { |
1908 | c18e2f94 | Sripathi Kodi | int len;
|
1909 | c18e2f94 | Sripathi Kodi | size_t size; |
1910 | c18e2f94 | Sripathi Kodi | |
1911 | c18e2f94 | Sripathi Kodi | if (vs->dent) {
|
1912 | c18e2f94 | Sripathi Kodi | v9fs_string_init(&vs->name); |
1913 | c18e2f94 | Sripathi Kodi | v9fs_string_sprintf(&vs->name, "%s", vs->dent->d_name);
|
1914 | c18e2f94 | Sripathi Kodi | |
1915 | c18e2f94 | Sripathi Kodi | if ((vs->count + V9_READDIR_DATA_SZ) > vs->max_count) {
|
1916 | c18e2f94 | Sripathi Kodi | /* Ran out of buffer. Set dir back to old position and return */
|
1917 | c18e2f94 | Sripathi Kodi | v9fs_do_seekdir(s, vs->fidp->dir, vs->saved_dir_pos); |
1918 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_seekdir(s, vs); |
1919 | c18e2f94 | Sripathi Kodi | return;
|
1920 | c18e2f94 | Sripathi Kodi | } |
1921 | c18e2f94 | Sripathi Kodi | |
1922 | c18e2f94 | Sripathi Kodi | /* Fill up just the path field of qid because the client uses
|
1923 | c18e2f94 | Sripathi Kodi | * only that. To fill the entire qid structure we will have
|
1924 | c18e2f94 | Sripathi Kodi | * to stat each dirent found, which is expensive
|
1925 | c18e2f94 | Sripathi Kodi | */
|
1926 | c18e2f94 | Sripathi Kodi | size = MIN(sizeof(vs->dent->d_ino), sizeof(vs->qid.path)); |
1927 | c18e2f94 | Sripathi Kodi | memcpy(&vs->qid.path, &vs->dent->d_ino, size); |
1928 | c18e2f94 | Sripathi Kodi | /* Fill the other fields with dummy values */
|
1929 | c18e2f94 | Sripathi Kodi | vs->qid.type = 0;
|
1930 | c18e2f94 | Sripathi Kodi | vs->qid.version = 0;
|
1931 | c18e2f94 | Sripathi Kodi | |
1932 | c18e2f94 | Sripathi Kodi | len = pdu_marshal(vs->pdu, vs->offset+4+vs->count, "Qqbs", |
1933 | c18e2f94 | Sripathi Kodi | &vs->qid, vs->dent->d_off, |
1934 | c18e2f94 | Sripathi Kodi | vs->dent->d_type, &vs->name); |
1935 | c18e2f94 | Sripathi Kodi | vs->count += len; |
1936 | c18e2f94 | Sripathi Kodi | v9fs_string_free(&vs->name); |
1937 | c18e2f94 | Sripathi Kodi | vs->saved_dir_pos = vs->dent->d_off; |
1938 | c18e2f94 | Sripathi Kodi | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1939 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
1940 | c18e2f94 | Sripathi Kodi | return;
|
1941 | c18e2f94 | Sripathi Kodi | } |
1942 | c18e2f94 | Sripathi Kodi | |
1943 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1944 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
1945 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
1946 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
1947 | c18e2f94 | Sripathi Kodi | return;
|
1948 | c18e2f94 | Sripathi Kodi | } |
1949 | c18e2f94 | Sripathi Kodi | |
1950 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_telldir(V9fsState *s, V9fsReadDirState *vs) |
1951 | c18e2f94 | Sripathi Kodi | { |
1952 | c18e2f94 | Sripathi Kodi | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1953 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
1954 | c18e2f94 | Sripathi Kodi | return;
|
1955 | c18e2f94 | Sripathi Kodi | } |
1956 | c18e2f94 | Sripathi Kodi | |
1957 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_setdir(V9fsState *s, V9fsReadDirState *vs) |
1958 | c18e2f94 | Sripathi Kodi | { |
1959 | c18e2f94 | Sripathi Kodi | vs->saved_dir_pos = v9fs_do_telldir(s, vs->fidp->dir); |
1960 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_telldir(s, vs); |
1961 | c18e2f94 | Sripathi Kodi | return;
|
1962 | c18e2f94 | Sripathi Kodi | } |
1963 | c18e2f94 | Sripathi Kodi | |
1964 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir(V9fsState *s, V9fsPDU *pdu) |
1965 | c18e2f94 | Sripathi Kodi | { |
1966 | c18e2f94 | Sripathi Kodi | int32_t fid; |
1967 | c18e2f94 | Sripathi Kodi | V9fsReadDirState *vs; |
1968 | c18e2f94 | Sripathi Kodi | ssize_t err = 0;
|
1969 | c18e2f94 | Sripathi Kodi | size_t offset = 7;
|
1970 | c18e2f94 | Sripathi Kodi | |
1971 | c18e2f94 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1972 | c18e2f94 | Sripathi Kodi | vs->pdu = pdu; |
1973 | c18e2f94 | Sripathi Kodi | vs->offset = 7;
|
1974 | c18e2f94 | Sripathi Kodi | vs->count = 0;
|
1975 | c18e2f94 | Sripathi Kodi | |
1976 | c18e2f94 | Sripathi Kodi | pdu_unmarshal(vs->pdu, offset, "dqd", &fid, &vs->initial_offset,
|
1977 | c18e2f94 | Sripathi Kodi | &vs->max_count); |
1978 | c18e2f94 | Sripathi Kodi | |
1979 | c18e2f94 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
1980 | c18e2f94 | Sripathi Kodi | if (vs->fidp == NULL || !(vs->fidp->dir)) { |
1981 | c18e2f94 | Sripathi Kodi | err = -EINVAL; |
1982 | c18e2f94 | Sripathi Kodi | goto out;
|
1983 | c18e2f94 | Sripathi Kodi | } |
1984 | c18e2f94 | Sripathi Kodi | |
1985 | c18e2f94 | Sripathi Kodi | if (vs->initial_offset == 0) { |
1986 | c18e2f94 | Sripathi Kodi | v9fs_do_rewinddir(s, vs->fidp->dir); |
1987 | c18e2f94 | Sripathi Kodi | } else {
|
1988 | c18e2f94 | Sripathi Kodi | v9fs_do_seekdir(s, vs->fidp->dir, vs->initial_offset); |
1989 | c18e2f94 | Sripathi Kodi | } |
1990 | c18e2f94 | Sripathi Kodi | |
1991 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_setdir(s, vs); |
1992 | c18e2f94 | Sripathi Kodi | return;
|
1993 | c18e2f94 | Sripathi Kodi | |
1994 | c18e2f94 | Sripathi Kodi | out:
|
1995 | c18e2f94 | Sripathi Kodi | complete_pdu(s, pdu, err); |
1996 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
1997 | c18e2f94 | Sripathi Kodi | return;
|
1998 | c18e2f94 | Sripathi Kodi | } |
1999 | c18e2f94 | Sripathi Kodi | |
2000 | 8449360c | Anthony Liguori | static void v9fs_write_post_writev(V9fsState *s, V9fsWriteState *vs, |
2001 | 8449360c | Anthony Liguori | ssize_t err) |
2002 | 8449360c | Anthony Liguori | { |
2003 | 8449360c | Anthony Liguori | if (err < 0) { |
2004 | 8449360c | Anthony Liguori | /* IO error return the error */
|
2005 | 8449360c | Anthony Liguori | err = -errno; |
2006 | 8449360c | Anthony Liguori | goto out;
|
2007 | 8449360c | Anthony Liguori | } |
2008 | 8449360c | Anthony Liguori | vs->total += vs->len; |
2009 | 8449360c | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
2010 | 8449360c | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
2011 | 8449360c | Anthony Liguori | do {
|
2012 | 8449360c | Anthony Liguori | if (0) { |
2013 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2014 | 8449360c | Anthony Liguori | } |
2015 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
2016 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2017 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
2018 | 8449360c | Anthony Liguori | err = -errno; |
2019 | 8449360c | Anthony Liguori | } |
2020 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
2021 | 8449360c | Anthony Liguori | return;
|
2022 | 8449360c | Anthony Liguori | } |
2023 | 8449360c | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
2024 | 8449360c | Anthony Liguori | |
2025 | 8449360c | Anthony Liguori | err = vs->offset; |
2026 | 8449360c | Anthony Liguori | out:
|
2027 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2028 | 8449360c | Anthony Liguori | qemu_free(vs); |
2029 | 8449360c | Anthony Liguori | } |
2030 | 8449360c | Anthony Liguori | |
2031 | 8449360c | Anthony Liguori | static void v9fs_write_post_lseek(V9fsState *s, V9fsWriteState *vs, ssize_t err) |
2032 | 8449360c | Anthony Liguori | { |
2033 | 8449360c | Anthony Liguori | if (err == -1) { |
2034 | 8449360c | Anthony Liguori | err = -errno; |
2035 | 8449360c | Anthony Liguori | goto out;
|
2036 | 8449360c | Anthony Liguori | } |
2037 | 8449360c | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
2038 | 8449360c | Anthony Liguori | |
2039 | 8449360c | Anthony Liguori | if (vs->total < vs->count) {
|
2040 | 8449360c | Anthony Liguori | do {
|
2041 | 8449360c | Anthony Liguori | if (0) { |
2042 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2043 | 8449360c | Anthony Liguori | } |
2044 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
2045 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2046 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
2047 | 8449360c | Anthony Liguori | err = -errno; |
2048 | 8449360c | Anthony Liguori | } |
2049 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
2050 | 8449360c | Anthony Liguori | return;
|
2051 | 8449360c | Anthony Liguori | } |
2052 | 8449360c | Anthony Liguori | |
2053 | 8449360c | Anthony Liguori | out:
|
2054 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2055 | 8449360c | Anthony Liguori | qemu_free(vs); |
2056 | 8449360c | Anthony Liguori | } |
2057 | 8449360c | Anthony Liguori | |
2058 | 9f107513 | Anthony Liguori | static void v9fs_write(V9fsState *s, V9fsPDU *pdu) |
2059 | 9f107513 | Anthony Liguori | { |
2060 | 8449360c | Anthony Liguori | int32_t fid; |
2061 | 8449360c | Anthony Liguori | V9fsWriteState *vs; |
2062 | 8449360c | Anthony Liguori | ssize_t err; |
2063 | 8449360c | Anthony Liguori | |
2064 | 8449360c | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2065 | 8449360c | Anthony Liguori | |
2066 | 8449360c | Anthony Liguori | vs->pdu = pdu; |
2067 | 8449360c | Anthony Liguori | vs->offset = 7;
|
2068 | 8449360c | Anthony Liguori | vs->sg = vs->iov; |
2069 | 8449360c | Anthony Liguori | vs->total = 0;
|
2070 | 8449360c | Anthony Liguori | vs->len = 0;
|
2071 | 8449360c | Anthony Liguori | |
2072 | 8449360c | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqdv", &fid, &vs->off, &vs->count,
|
2073 | 8449360c | Anthony Liguori | vs->sg, &vs->cnt); |
2074 | 8449360c | Anthony Liguori | |
2075 | 8449360c | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2076 | 8449360c | Anthony Liguori | if (vs->fidp == NULL) { |
2077 | 8449360c | Anthony Liguori | err = -EINVAL; |
2078 | 8449360c | Anthony Liguori | goto out;
|
2079 | 9f107513 | Anthony Liguori | } |
2080 | 8449360c | Anthony Liguori | |
2081 | 8449360c | Anthony Liguori | if (vs->fidp->fd == -1) { |
2082 | 8449360c | Anthony Liguori | err = -EINVAL; |
2083 | 8449360c | Anthony Liguori | goto out;
|
2084 | 8449360c | Anthony Liguori | } |
2085 | 8449360c | Anthony Liguori | |
2086 | 8449360c | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
2087 | 8449360c | Anthony Liguori | |
2088 | 8449360c | Anthony Liguori | v9fs_write_post_lseek(s, vs, err); |
2089 | 8449360c | Anthony Liguori | return;
|
2090 | 8449360c | Anthony Liguori | |
2091 | 8449360c | Anthony Liguori | out:
|
2092 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2093 | 8449360c | Anthony Liguori | qemu_free(vs); |
2094 | 9f107513 | Anthony Liguori | } |
2095 | 9f107513 | Anthony Liguori | |
2096 | 5e94c103 | M. Mohan Kumar | static void v9fs_create_post_getiounit(V9fsState *s, V9fsCreateState *vs) |
2097 | c494dd6f | Anthony Liguori | { |
2098 | 5e94c103 | M. Mohan Kumar | int err;
|
2099 | 5e94c103 | M. Mohan Kumar | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
2100 | 5e94c103 | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
2101 | c494dd6f | Anthony Liguori | |
2102 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
2103 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
2104 | c494dd6f | Anthony Liguori | |
2105 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2106 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2107 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->extension); |
2108 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
2109 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
2110 | 5e94c103 | M. Mohan Kumar | } |
2111 | 5e94c103 | M. Mohan Kumar | |
2112 | 5e94c103 | M. Mohan Kumar | static void v9fs_post_create(V9fsState *s, V9fsCreateState *vs, int err) |
2113 | 5e94c103 | M. Mohan Kumar | { |
2114 | 5e94c103 | M. Mohan Kumar | if (err == 0) { |
2115 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
2116 | 5e94c103 | M. Mohan Kumar | v9fs_create_post_getiounit(s, vs); |
2117 | 5e94c103 | M. Mohan Kumar | return;
|
2118 | c494dd6f | Anthony Liguori | } |
2119 | c494dd6f | Anthony Liguori | |
2120 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2121 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2122 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2123 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->fullname); |
2124 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2125 | c494dd6f | Anthony Liguori | } |
2126 | c494dd6f | Anthony Liguori | |
2127 | c494dd6f | Anthony Liguori | static void v9fs_create_post_perms(V9fsState *s, V9fsCreateState *vs, int err) |
2128 | c494dd6f | Anthony Liguori | { |
2129 | c494dd6f | Anthony Liguori | if (err) {
|
2130 | c494dd6f | Anthony Liguori | err = -errno; |
2131 | c494dd6f | Anthony Liguori | } |
2132 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2133 | c494dd6f | Anthony Liguori | } |
2134 | c494dd6f | Anthony Liguori | |
2135 | c494dd6f | Anthony Liguori | static void v9fs_create_post_opendir(V9fsState *s, V9fsCreateState *vs, |
2136 | c494dd6f | Anthony Liguori | int err)
|
2137 | c494dd6f | Anthony Liguori | { |
2138 | c494dd6f | Anthony Liguori | if (!vs->fidp->dir) {
|
2139 | c494dd6f | Anthony Liguori | err = -errno; |
2140 | c494dd6f | Anthony Liguori | } |
2141 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2142 | c494dd6f | Anthony Liguori | } |
2143 | c494dd6f | Anthony Liguori | |
2144 | c494dd6f | Anthony Liguori | static void v9fs_create_post_dir_lstat(V9fsState *s, V9fsCreateState *vs, |
2145 | c494dd6f | Anthony Liguori | int err)
|
2146 | c494dd6f | Anthony Liguori | { |
2147 | c494dd6f | Anthony Liguori | if (err) {
|
2148 | c494dd6f | Anthony Liguori | err = -errno; |
2149 | c494dd6f | Anthony Liguori | goto out;
|
2150 | c494dd6f | Anthony Liguori | } |
2151 | c494dd6f | Anthony Liguori | |
2152 | c494dd6f | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fullname); |
2153 | c494dd6f | Anthony Liguori | v9fs_create_post_opendir(s, vs, err); |
2154 | c494dd6f | Anthony Liguori | return;
|
2155 | c494dd6f | Anthony Liguori | |
2156 | c494dd6f | Anthony Liguori | out:
|
2157 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2158 | c494dd6f | Anthony Liguori | } |
2159 | c494dd6f | Anthony Liguori | |
2160 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mkdir(V9fsState *s, V9fsCreateState *vs, int err) |
2161 | c494dd6f | Anthony Liguori | { |
2162 | c494dd6f | Anthony Liguori | if (err) {
|
2163 | c494dd6f | Anthony Liguori | err = -errno; |
2164 | c494dd6f | Anthony Liguori | goto out;
|
2165 | c494dd6f | Anthony Liguori | } |
2166 | c494dd6f | Anthony Liguori | |
2167 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2168 | c494dd6f | Anthony Liguori | v9fs_create_post_dir_lstat(s, vs, err); |
2169 | c494dd6f | Anthony Liguori | return;
|
2170 | c494dd6f | Anthony Liguori | |
2171 | c494dd6f | Anthony Liguori | out:
|
2172 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2173 | c494dd6f | Anthony Liguori | } |
2174 | c494dd6f | Anthony Liguori | |
2175 | c494dd6f | Anthony Liguori | static void v9fs_create_post_fstat(V9fsState *s, V9fsCreateState *vs, int err) |
2176 | c494dd6f | Anthony Liguori | { |
2177 | c494dd6f | Anthony Liguori | if (err) {
|
2178 | c494dd6f | Anthony Liguori | vs->fidp->fd = -1;
|
2179 | c494dd6f | Anthony Liguori | err = -errno; |
2180 | c494dd6f | Anthony Liguori | } |
2181 | c494dd6f | Anthony Liguori | |
2182 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2183 | c494dd6f | Anthony Liguori | return;
|
2184 | c494dd6f | Anthony Liguori | } |
2185 | c494dd6f | Anthony Liguori | |
2186 | c494dd6f | Anthony Liguori | static void v9fs_create_post_open2(V9fsState *s, V9fsCreateState *vs, int err) |
2187 | c494dd6f | Anthony Liguori | { |
2188 | c494dd6f | Anthony Liguori | if (vs->fidp->fd == -1) { |
2189 | c494dd6f | Anthony Liguori | err = -errno; |
2190 | c494dd6f | Anthony Liguori | goto out;
|
2191 | c494dd6f | Anthony Liguori | } |
2192 | c494dd6f | Anthony Liguori | |
2193 | c494dd6f | Anthony Liguori | err = v9fs_do_fstat(s, vs->fidp->fd, &vs->stbuf); |
2194 | c494dd6f | Anthony Liguori | v9fs_create_post_fstat(s, vs, err); |
2195 | c494dd6f | Anthony Liguori | |
2196 | c494dd6f | Anthony Liguori | return;
|
2197 | c494dd6f | Anthony Liguori | |
2198 | c494dd6f | Anthony Liguori | out:
|
2199 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2200 | c494dd6f | Anthony Liguori | |
2201 | c494dd6f | Anthony Liguori | } |
2202 | c494dd6f | Anthony Liguori | |
2203 | c494dd6f | Anthony Liguori | static void v9fs_create_post_lstat(V9fsState *s, V9fsCreateState *vs, int err) |
2204 | c494dd6f | Anthony Liguori | { |
2205 | c494dd6f | Anthony Liguori | |
2206 | c494dd6f | Anthony Liguori | if (err == 0 || errno != ENOENT) { |
2207 | c494dd6f | Anthony Liguori | err = -errno; |
2208 | c494dd6f | Anthony Liguori | goto out;
|
2209 | c494dd6f | Anthony Liguori | } |
2210 | c494dd6f | Anthony Liguori | |
2211 | c494dd6f | Anthony Liguori | if (vs->perm & P9_STAT_MODE_DIR) {
|
2212 | 00ec5c37 | Venkateswararao Jujjuri (JV) | err = v9fs_do_mkdir(s, vs); |
2213 | c494dd6f | Anthony Liguori | v9fs_create_post_mkdir(s, vs, err); |
2214 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SYMLINK) { |
2215 | 879c2813 | Venkateswararao Jujjuri (JV) | err = v9fs_do_symlink(s, vs); |
2216 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2217 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_LINK) { |
2218 | c494dd6f | Anthony Liguori | int32_t nfid = atoi(vs->extension.data); |
2219 | c494dd6f | Anthony Liguori | V9fsFidState *nfidp = lookup_fid(s, nfid); |
2220 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
2221 | c494dd6f | Anthony Liguori | err = -errno; |
2222 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2223 | c494dd6f | Anthony Liguori | } |
2224 | c494dd6f | Anthony Liguori | err = v9fs_do_link(s, &nfidp->path, &vs->fullname); |
2225 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2226 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_DEVICE) { |
2227 | c494dd6f | Anthony Liguori | char ctype;
|
2228 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
2229 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
2230 | c494dd6f | Anthony Liguori | |
2231 | c494dd6f | Anthony Liguori | if (sscanf(vs->extension.data, "%c %u %u", &ctype, &major, |
2232 | c494dd6f | Anthony Liguori | &minor) != 3) {
|
2233 | c494dd6f | Anthony Liguori | err = -errno; |
2234 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2235 | c494dd6f | Anthony Liguori | } |
2236 | c494dd6f | Anthony Liguori | |
2237 | c494dd6f | Anthony Liguori | switch (ctype) {
|
2238 | c494dd6f | Anthony Liguori | case 'c': |
2239 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
2240 | c494dd6f | Anthony Liguori | break;
|
2241 | c494dd6f | Anthony Liguori | case 'b': |
2242 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
2243 | c494dd6f | Anthony Liguori | break;
|
2244 | c494dd6f | Anthony Liguori | default:
|
2245 | c494dd6f | Anthony Liguori | err = -EIO; |
2246 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2247 | c494dd6f | Anthony Liguori | } |
2248 | c494dd6f | Anthony Liguori | |
2249 | c494dd6f | Anthony Liguori | nmode |= vs->perm & 0777;
|
2250 | 1c293312 | Venkateswararao Jujjuri (JV) | err = v9fs_do_mknod(s, vs, nmode, makedev(major, minor)); |
2251 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2252 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_NAMED_PIPE) { |
2253 | 1c293312 | Venkateswararao Jujjuri (JV) | err = v9fs_do_mknod(s, vs, S_IFIFO | (vs->perm & 0777), 0); |
2254 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2255 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SOCKET) { |
2256 | 63729c36 | Venkateswararao Jujjuri (JV) | err = v9fs_do_mknod(s, vs, S_IFSOCK | (vs->perm & 0777), 0); |
2257 | 63729c36 | Venkateswararao Jujjuri (JV) | v9fs_post_create(s, vs, err); |
2258 | c494dd6f | Anthony Liguori | } else {
|
2259 | 4750a96f | Venkateswararao Jujjuri (JV) | vs->fidp->fd = v9fs_do_open2(s, vs); |
2260 | c494dd6f | Anthony Liguori | v9fs_create_post_open2(s, vs, err); |
2261 | c494dd6f | Anthony Liguori | } |
2262 | c494dd6f | Anthony Liguori | |
2263 | c494dd6f | Anthony Liguori | return;
|
2264 | c494dd6f | Anthony Liguori | |
2265 | c494dd6f | Anthony Liguori | out:
|
2266 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2267 | c494dd6f | Anthony Liguori | } |
2268 | c494dd6f | Anthony Liguori | |
2269 | 9f107513 | Anthony Liguori | static void v9fs_create(V9fsState *s, V9fsPDU *pdu) |
2270 | 9f107513 | Anthony Liguori | { |
2271 | c494dd6f | Anthony Liguori | int32_t fid; |
2272 | c494dd6f | Anthony Liguori | V9fsCreateState *vs; |
2273 | c494dd6f | Anthony Liguori | int err = 0; |
2274 | c494dd6f | Anthony Liguori | |
2275 | c494dd6f | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2276 | c494dd6f | Anthony Liguori | vs->pdu = pdu; |
2277 | c494dd6f | Anthony Liguori | vs->offset = 7;
|
2278 | c494dd6f | Anthony Liguori | |
2279 | c494dd6f | Anthony Liguori | v9fs_string_init(&vs->fullname); |
2280 | c494dd6f | Anthony Liguori | |
2281 | c494dd6f | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dsdbs", &fid, &vs->name,
|
2282 | c494dd6f | Anthony Liguori | &vs->perm, &vs->mode, &vs->extension); |
2283 | c494dd6f | Anthony Liguori | |
2284 | c494dd6f | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2285 | c494dd6f | Anthony Liguori | if (vs->fidp == NULL) { |
2286 | c494dd6f | Anthony Liguori | err = -EINVAL; |
2287 | c494dd6f | Anthony Liguori | goto out;
|
2288 | 9f107513 | Anthony Liguori | } |
2289 | c494dd6f | Anthony Liguori | |
2290 | c494dd6f | Anthony Liguori | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
2291 | c494dd6f | Anthony Liguori | vs->name.data); |
2292 | c494dd6f | Anthony Liguori | |
2293 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2294 | c494dd6f | Anthony Liguori | v9fs_create_post_lstat(s, vs, err); |
2295 | c494dd6f | Anthony Liguori | return;
|
2296 | c494dd6f | Anthony Liguori | |
2297 | c494dd6f | Anthony Liguori | out:
|
2298 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2299 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2300 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2301 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2302 | 9f107513 | Anthony Liguori | } |
2303 | 9f107513 | Anthony Liguori | |
2304 | 9f107513 | Anthony Liguori | static void v9fs_flush(V9fsState *s, V9fsPDU *pdu) |
2305 | 9f107513 | Anthony Liguori | { |
2306 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
2307 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
2308 | 9f107513 | Anthony Liguori | } |
2309 | 9f107513 | Anthony Liguori | |
2310 | 5bae1900 | Anthony Liguori | static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs, |
2311 | 5bae1900 | Anthony Liguori | int err)
|
2312 | 5bae1900 | Anthony Liguori | { |
2313 | 5bae1900 | Anthony Liguori | if (err < 0) { |
2314 | 926487b7 | Sripathi Kodi | err = -errno; |
2315 | 926487b7 | Sripathi Kodi | } else {
|
2316 | 926487b7 | Sripathi Kodi | err = vs->offset; |
2317 | 5bae1900 | Anthony Liguori | } |
2318 | 5bae1900 | Anthony Liguori | |
2319 | 926487b7 | Sripathi Kodi | /* For TREMOVE we need to clunk the fid even on failed remove */
|
2320 | 926487b7 | Sripathi Kodi | free_fid(s, vs->fidp->fid); |
2321 | 926487b7 | Sripathi Kodi | |
2322 | 5bae1900 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2323 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2324 | 5bae1900 | Anthony Liguori | } |
2325 | 5bae1900 | Anthony Liguori | |
2326 | 9f107513 | Anthony Liguori | static void v9fs_remove(V9fsState *s, V9fsPDU *pdu) |
2327 | 9f107513 | Anthony Liguori | { |
2328 | 5bae1900 | Anthony Liguori | int32_t fid; |
2329 | 5bae1900 | Anthony Liguori | V9fsRemoveState *vs; |
2330 | 5bae1900 | Anthony Liguori | int err = 0; |
2331 | 5bae1900 | Anthony Liguori | |
2332 | 5bae1900 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2333 | 5bae1900 | Anthony Liguori | vs->pdu = pdu; |
2334 | 5bae1900 | Anthony Liguori | vs->offset = 7;
|
2335 | 5bae1900 | Anthony Liguori | |
2336 | 5bae1900 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
2337 | 5bae1900 | Anthony Liguori | |
2338 | 5bae1900 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2339 | 5bae1900 | Anthony Liguori | if (vs->fidp == NULL) { |
2340 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
2341 | 5bae1900 | Anthony Liguori | goto out;
|
2342 | 9f107513 | Anthony Liguori | } |
2343 | 5bae1900 | Anthony Liguori | |
2344 | 5bae1900 | Anthony Liguori | err = v9fs_do_remove(s, &vs->fidp->path); |
2345 | 5bae1900 | Anthony Liguori | v9fs_remove_post_remove(s, vs, err); |
2346 | 5bae1900 | Anthony Liguori | return;
|
2347 | 5bae1900 | Anthony Liguori | |
2348 | 5bae1900 | Anthony Liguori | out:
|
2349 | 5bae1900 | Anthony Liguori | complete_pdu(s, pdu, err); |
2350 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2351 | 9f107513 | Anthony Liguori | } |
2352 | 9f107513 | Anthony Liguori | |
2353 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err) |
2354 | 8cf89e00 | Anthony Liguori | { |
2355 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2356 | 8cf89e00 | Anthony Liguori | goto out;
|
2357 | 8cf89e00 | Anthony Liguori | } |
2358 | 8cf89e00 | Anthony Liguori | |
2359 | 8cf89e00 | Anthony Liguori | err = vs->offset; |
2360 | 8cf89e00 | Anthony Liguori | |
2361 | 8cf89e00 | Anthony Liguori | out:
|
2362 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2363 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2364 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2365 | 8cf89e00 | Anthony Liguori | } |
2366 | 8cf89e00 | Anthony Liguori | |
2367 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err) |
2368 | 8cf89e00 | Anthony Liguori | { |
2369 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2370 | 8cf89e00 | Anthony Liguori | goto out;
|
2371 | 8cf89e00 | Anthony Liguori | } |
2372 | 8cf89e00 | Anthony Liguori | |
2373 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
2374 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&vs->nname); |
2375 | 8cf89e00 | Anthony Liguori | } |
2376 | 8cf89e00 | Anthony Liguori | |
2377 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.length != -1) { |
2378 | 8cf89e00 | Anthony Liguori | if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) { |
2379 | 8cf89e00 | Anthony Liguori | err = -errno; |
2380 | 8cf89e00 | Anthony Liguori | } |
2381 | 8cf89e00 | Anthony Liguori | } |
2382 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_truncate(s, vs, err); |
2383 | 8cf89e00 | Anthony Liguori | return;
|
2384 | 8cf89e00 | Anthony Liguori | |
2385 | 8cf89e00 | Anthony Liguori | out:
|
2386 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2387 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2388 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2389 | 8cf89e00 | Anthony Liguori | } |
2390 | 8cf89e00 | Anthony Liguori | |
2391 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err) |
2392 | 8cf89e00 | Anthony Liguori | { |
2393 | 8cf89e00 | Anthony Liguori | V9fsFidState *fidp; |
2394 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2395 | 8cf89e00 | Anthony Liguori | goto out;
|
2396 | 8cf89e00 | Anthony Liguori | } |
2397 | 8cf89e00 | Anthony Liguori | |
2398 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
2399 | 8cf89e00 | Anthony Liguori | char *old_name, *new_name;
|
2400 | 8cf89e00 | Anthony Liguori | char *end;
|
2401 | 8cf89e00 | Anthony Liguori | |
2402 | 8cf89e00 | Anthony Liguori | old_name = vs->fidp->path.data; |
2403 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2404 | 8cf89e00 | Anthony Liguori | if (end) {
|
2405 | 8cf89e00 | Anthony Liguori | end++; |
2406 | 8cf89e00 | Anthony Liguori | } else {
|
2407 | 8cf89e00 | Anthony Liguori | end = old_name; |
2408 | 8cf89e00 | Anthony Liguori | } |
2409 | 8cf89e00 | Anthony Liguori | |
2410 | cc597832 | Blue Swirl | new_name = qemu_mallocz(end - old_name + vs->v9stat.name.size + 1);
|
2411 | 8cf89e00 | Anthony Liguori | |
2412 | 8cf89e00 | Anthony Liguori | memcpy(new_name, old_name, end - old_name); |
2413 | 8cf89e00 | Anthony Liguori | memcpy(new_name + (end - old_name), vs->v9stat.name.data, |
2414 | 8cf89e00 | Anthony Liguori | vs->v9stat.name.size); |
2415 | 8cf89e00 | Anthony Liguori | vs->nname.data = new_name; |
2416 | 8cf89e00 | Anthony Liguori | vs->nname.size = strlen(new_name); |
2417 | 8cf89e00 | Anthony Liguori | |
2418 | 8cf89e00 | Anthony Liguori | if (strcmp(new_name, vs->fidp->path.data) != 0) { |
2419 | 8cf89e00 | Anthony Liguori | if (v9fs_do_rename(s, &vs->fidp->path, &vs->nname)) {
|
2420 | 8cf89e00 | Anthony Liguori | err = -errno; |
2421 | 8cf89e00 | Anthony Liguori | } else {
|
2422 | 8cf89e00 | Anthony Liguori | /*
|
2423 | 8cf89e00 | Anthony Liguori | * Fixup fid's pointing to the old name to
|
2424 | 8cf89e00 | Anthony Liguori | * start pointing to the new name
|
2425 | 8cf89e00 | Anthony Liguori | */
|
2426 | 8cf89e00 | Anthony Liguori | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
2427 | 8cf89e00 | Anthony Liguori | |
2428 | 8cf89e00 | Anthony Liguori | if (vs->fidp == fidp) {
|
2429 | 8cf89e00 | Anthony Liguori | /*
|
2430 | 8cf89e00 | Anthony Liguori | * we replace name of this fid towards the end
|
2431 | 8cf89e00 | Anthony Liguori | * so that our below strcmp will work
|
2432 | 8cf89e00 | Anthony Liguori | */
|
2433 | 8cf89e00 | Anthony Liguori | continue;
|
2434 | 8cf89e00 | Anthony Liguori | } |
2435 | 8cf89e00 | Anthony Liguori | if (!strncmp(vs->fidp->path.data, fidp->path.data,
|
2436 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data))) { |
2437 | 8cf89e00 | Anthony Liguori | /* replace the name */
|
2438 | 8cf89e00 | Anthony Liguori | v9fs_fix_path(&fidp->path, &vs->nname, |
2439 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data)); |
2440 | 8cf89e00 | Anthony Liguori | } |
2441 | 8cf89e00 | Anthony Liguori | } |
2442 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->nname); |
2443 | 8cf89e00 | Anthony Liguori | } |
2444 | 8cf89e00 | Anthony Liguori | } |
2445 | 8cf89e00 | Anthony Liguori | } |
2446 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_rename(s, vs, err); |
2447 | 8cf89e00 | Anthony Liguori | return;
|
2448 | 8cf89e00 | Anthony Liguori | |
2449 | 8cf89e00 | Anthony Liguori | out:
|
2450 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2451 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2452 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2453 | 8cf89e00 | Anthony Liguori | } |
2454 | 8cf89e00 | Anthony Liguori | |
2455 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err) |
2456 | 8cf89e00 | Anthony Liguori | { |
2457 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2458 | 8cf89e00 | Anthony Liguori | goto out;
|
2459 | 8cf89e00 | Anthony Liguori | } |
2460 | 8cf89e00 | Anthony Liguori | |
2461 | f7613bee | Venkateswararao Jujjuri (JV) | if (vs->v9stat.n_gid != -1 || vs->v9stat.n_uid != -1) { |
2462 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chown(s, &vs->fidp->path, vs->v9stat.n_uid,
|
2463 | 8cf89e00 | Anthony Liguori | vs->v9stat.n_gid)) { |
2464 | 8cf89e00 | Anthony Liguori | err = -errno; |
2465 | 8cf89e00 | Anthony Liguori | } |
2466 | 8cf89e00 | Anthony Liguori | } |
2467 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chown(s, vs, err); |
2468 | 8cf89e00 | Anthony Liguori | return;
|
2469 | 8cf89e00 | Anthony Liguori | |
2470 | 8cf89e00 | Anthony Liguori | out:
|
2471 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2472 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2473 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2474 | 8cf89e00 | Anthony Liguori | } |
2475 | 8cf89e00 | Anthony Liguori | |
2476 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chmod(V9fsState *s, V9fsWstatState *vs, int err) |
2477 | 8cf89e00 | Anthony Liguori | { |
2478 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2479 | 8cf89e00 | Anthony Liguori | goto out;
|
2480 | 8cf89e00 | Anthony Liguori | } |
2481 | 8cf89e00 | Anthony Liguori | |
2482 | 74bc02b2 | M. Mohan Kumar | if (vs->v9stat.mtime != -1 || vs->v9stat.atime != -1) { |
2483 | 8fc39ae4 | Sripathi Kodi | struct timespec times[2]; |
2484 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.atime != -1) { |
2485 | 8fc39ae4 | Sripathi Kodi | times[0].tv_sec = vs->v9stat.atime;
|
2486 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = 0; |
2487 | 8fc39ae4 | Sripathi Kodi | } else {
|
2488 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
2489 | 8fc39ae4 | Sripathi Kodi | } |
2490 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.mtime != -1) { |
2491 | 8fc39ae4 | Sripathi Kodi | times[1].tv_sec = vs->v9stat.mtime;
|
2492 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = 0; |
2493 | 8fc39ae4 | Sripathi Kodi | } else {
|
2494 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
2495 | 8fc39ae4 | Sripathi Kodi | } |
2496 | 8fc39ae4 | Sripathi Kodi | |
2497 | 8fc39ae4 | Sripathi Kodi | if (v9fs_do_utimensat(s, &vs->fidp->path, times)) {
|
2498 | 8cf89e00 | Anthony Liguori | err = -errno; |
2499 | 8cf89e00 | Anthony Liguori | } |
2500 | 8cf89e00 | Anthony Liguori | } |
2501 | 8cf89e00 | Anthony Liguori | |
2502 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_utime(s, vs, err); |
2503 | 8cf89e00 | Anthony Liguori | return;
|
2504 | 8cf89e00 | Anthony Liguori | |
2505 | 8cf89e00 | Anthony Liguori | out:
|
2506 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2507 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2508 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2509 | 8cf89e00 | Anthony Liguori | } |
2510 | 8cf89e00 | Anthony Liguori | |
2511 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_fsync(V9fsState *s, V9fsWstatState *vs, int err) |
2512 | 8cf89e00 | Anthony Liguori | { |
2513 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2514 | 8cf89e00 | Anthony Liguori | err = -errno; |
2515 | 8cf89e00 | Anthony Liguori | } |
2516 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2517 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2518 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2519 | 8cf89e00 | Anthony Liguori | } |
2520 | 8cf89e00 | Anthony Liguori | |
2521 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_lstat(V9fsState *s, V9fsWstatState *vs, int err) |
2522 | 8cf89e00 | Anthony Liguori | { |
2523 | 8cf89e00 | Anthony Liguori | uint32_t v9_mode; |
2524 | 8cf89e00 | Anthony Liguori | |
2525 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2526 | 8cf89e00 | Anthony Liguori | err = -errno; |
2527 | 8cf89e00 | Anthony Liguori | goto out;
|
2528 | 8cf89e00 | Anthony Liguori | } |
2529 | 8cf89e00 | Anthony Liguori | |
2530 | 8cf89e00 | Anthony Liguori | v9_mode = stat_to_v9mode(&vs->stbuf); |
2531 | 8cf89e00 | Anthony Liguori | |
2532 | 8cf89e00 | Anthony Liguori | if ((vs->v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2533 | 8cf89e00 | Anthony Liguori | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2534 | 8cf89e00 | Anthony Liguori | /* Attempting to change the type */
|
2535 | 8cf89e00 | Anthony Liguori | err = -EIO; |
2536 | 8cf89e00 | Anthony Liguori | goto out;
|
2537 | 8cf89e00 | Anthony Liguori | } |
2538 | 8cf89e00 | Anthony Liguori | |
2539 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chmod(s, &vs->fidp->path, v9mode_to_mode(vs->v9stat.mode,
|
2540 | 8cf89e00 | Anthony Liguori | &vs->v9stat.extension))) { |
2541 | 8cf89e00 | Anthony Liguori | err = -errno; |
2542 | 8cf89e00 | Anthony Liguori | } |
2543 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2544 | 8cf89e00 | Anthony Liguori | return;
|
2545 | 8cf89e00 | Anthony Liguori | |
2546 | 8cf89e00 | Anthony Liguori | out:
|
2547 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2548 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2549 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2550 | 8cf89e00 | Anthony Liguori | } |
2551 | 8cf89e00 | Anthony Liguori | |
2552 | 9f107513 | Anthony Liguori | static void v9fs_wstat(V9fsState *s, V9fsPDU *pdu) |
2553 | 9f107513 | Anthony Liguori | { |
2554 | 8cf89e00 | Anthony Liguori | int32_t fid; |
2555 | 8cf89e00 | Anthony Liguori | V9fsWstatState *vs; |
2556 | 8cf89e00 | Anthony Liguori | int err = 0; |
2557 | 8cf89e00 | Anthony Liguori | |
2558 | 8cf89e00 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2559 | 8cf89e00 | Anthony Liguori | vs->pdu = pdu; |
2560 | 8cf89e00 | Anthony Liguori | vs->offset = 7;
|
2561 | 8cf89e00 | Anthony Liguori | |
2562 | 8cf89e00 | Anthony Liguori | pdu_unmarshal(pdu, vs->offset, "dwS", &fid, &vs->unused, &vs->v9stat);
|
2563 | 8cf89e00 | Anthony Liguori | |
2564 | 8cf89e00 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2565 | 8cf89e00 | Anthony Liguori | if (vs->fidp == NULL) { |
2566 | 8cf89e00 | Anthony Liguori | err = -EINVAL; |
2567 | 8cf89e00 | Anthony Liguori | goto out;
|
2568 | 9f107513 | Anthony Liguori | } |
2569 | 8cf89e00 | Anthony Liguori | |
2570 | 8cf89e00 | Anthony Liguori | /* do we need to sync the file? */
|
2571 | 8cf89e00 | Anthony Liguori | if (donttouch_stat(&vs->v9stat)) {
|
2572 | 8cf89e00 | Anthony Liguori | err = v9fs_do_fsync(s, vs->fidp->fd); |
2573 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_fsync(s, vs, err); |
2574 | 8cf89e00 | Anthony Liguori | return;
|
2575 | 8cf89e00 | Anthony Liguori | } |
2576 | 8cf89e00 | Anthony Liguori | |
2577 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mode != -1) { |
2578 | 8cf89e00 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
2579 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_lstat(s, vs, err); |
2580 | 8cf89e00 | Anthony Liguori | return;
|
2581 | 8cf89e00 | Anthony Liguori | } |
2582 | 8cf89e00 | Anthony Liguori | |
2583 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2584 | 8cf89e00 | Anthony Liguori | return;
|
2585 | 8cf89e00 | Anthony Liguori | |
2586 | 8cf89e00 | Anthony Liguori | out:
|
2587 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2588 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2589 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2590 | 9f107513 | Anthony Liguori | } |
2591 | 9f107513 | Anthony Liguori | |
2592 | be940c87 | M. Mohan Kumar | static void v9fs_statfs_post_statfs(V9fsState *s, V9fsStatfsState *vs, int err) |
2593 | be940c87 | M. Mohan Kumar | { |
2594 | 5e94c103 | M. Mohan Kumar | int32_t bsize_factor; |
2595 | 5e94c103 | M. Mohan Kumar | |
2596 | be940c87 | M. Mohan Kumar | if (err) {
|
2597 | be940c87 | M. Mohan Kumar | err = -errno; |
2598 | be940c87 | M. Mohan Kumar | goto out;
|
2599 | be940c87 | M. Mohan Kumar | } |
2600 | be940c87 | M. Mohan Kumar | |
2601 | 5e94c103 | M. Mohan Kumar | /*
|
2602 | 5e94c103 | M. Mohan Kumar | * compute bsize factor based on host file system block size
|
2603 | 5e94c103 | M. Mohan Kumar | * and client msize
|
2604 | 5e94c103 | M. Mohan Kumar | */
|
2605 | 5e94c103 | M. Mohan Kumar | bsize_factor = (s->msize - P9_IOHDRSZ)/vs->stbuf.f_bsize; |
2606 | 5e94c103 | M. Mohan Kumar | if (!bsize_factor) {
|
2607 | 5e94c103 | M. Mohan Kumar | bsize_factor = 1;
|
2608 | 5e94c103 | M. Mohan Kumar | } |
2609 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type = vs->stbuf.f_type; |
2610 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bsize = vs->stbuf.f_bsize; |
2611 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bsize *= bsize_factor; |
2612 | 5e94c103 | M. Mohan Kumar | /*
|
2613 | 5e94c103 | M. Mohan Kumar | * f_bsize is adjusted(multiplied) by bsize factor, so we need to
|
2614 | 5e94c103 | M. Mohan Kumar | * adjust(divide) the number of blocks, free blocks and available
|
2615 | 5e94c103 | M. Mohan Kumar | * blocks by bsize factor
|
2616 | 5e94c103 | M. Mohan Kumar | */
|
2617 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_blocks = vs->stbuf.f_blocks/bsize_factor; |
2618 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bfree = vs->stbuf.f_bfree/bsize_factor; |
2619 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bavail = vs->stbuf.f_bavail/bsize_factor; |
2620 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_files = vs->stbuf.f_files; |
2621 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree = vs->stbuf.f_ffree; |
2622 | be940c87 | M. Mohan Kumar | vs->v9statfs.fsid_val = (unsigned int) vs->stbuf.f_fsid.__val[0] | |
2623 | be940c87 | M. Mohan Kumar | (unsigned long long)vs->stbuf.f_fsid.__val[1] << 32; |
2624 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen = vs->stbuf.f_namelen; |
2625 | be940c87 | M. Mohan Kumar | |
2626 | be940c87 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "ddqqqqqqd",
|
2627 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type, vs->v9statfs.f_bsize, vs->v9statfs.f_blocks, |
2628 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bfree, vs->v9statfs.f_bavail, vs->v9statfs.f_files, |
2629 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree, vs->v9statfs.fsid_val, |
2630 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen); |
2631 | be940c87 | M. Mohan Kumar | |
2632 | be940c87 | M. Mohan Kumar | out:
|
2633 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, vs->offset); |
2634 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
2635 | be940c87 | M. Mohan Kumar | } |
2636 | be940c87 | M. Mohan Kumar | |
2637 | be940c87 | M. Mohan Kumar | static void v9fs_statfs(V9fsState *s, V9fsPDU *pdu) |
2638 | be940c87 | M. Mohan Kumar | { |
2639 | be940c87 | M. Mohan Kumar | V9fsStatfsState *vs; |
2640 | be940c87 | M. Mohan Kumar | ssize_t err = 0;
|
2641 | be940c87 | M. Mohan Kumar | |
2642 | be940c87 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
2643 | be940c87 | M. Mohan Kumar | vs->pdu = pdu; |
2644 | be940c87 | M. Mohan Kumar | vs->offset = 7;
|
2645 | be940c87 | M. Mohan Kumar | |
2646 | be940c87 | M. Mohan Kumar | memset(&vs->v9statfs, 0, sizeof(vs->v9statfs)); |
2647 | be940c87 | M. Mohan Kumar | |
2648 | be940c87 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "d", &vs->fid);
|
2649 | be940c87 | M. Mohan Kumar | |
2650 | be940c87 | M. Mohan Kumar | vs->fidp = lookup_fid(s, vs->fid); |
2651 | be940c87 | M. Mohan Kumar | if (vs->fidp == NULL) { |
2652 | be940c87 | M. Mohan Kumar | err = -ENOENT; |
2653 | be940c87 | M. Mohan Kumar | goto out;
|
2654 | be940c87 | M. Mohan Kumar | } |
2655 | be940c87 | M. Mohan Kumar | |
2656 | be940c87 | M. Mohan Kumar | err = v9fs_do_statfs(s, &vs->fidp->path, &vs->stbuf); |
2657 | be940c87 | M. Mohan Kumar | v9fs_statfs_post_statfs(s, vs, err); |
2658 | be940c87 | M. Mohan Kumar | return;
|
2659 | be940c87 | M. Mohan Kumar | |
2660 | be940c87 | M. Mohan Kumar | out:
|
2661 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2662 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
2663 | be940c87 | M. Mohan Kumar | } |
2664 | be940c87 | M. Mohan Kumar | |
2665 | 9f107513 | Anthony Liguori | typedef void (pdu_handler_t)(V9fsState *s, V9fsPDU *pdu); |
2666 | 9f107513 | Anthony Liguori | |
2667 | 9f107513 | Anthony Liguori | static pdu_handler_t *pdu_handlers[] = {
|
2668 | c18e2f94 | Sripathi Kodi | [P9_TREADDIR] = v9fs_readdir, |
2669 | be940c87 | M. Mohan Kumar | [P9_TSTATFS] = v9fs_statfs, |
2670 | 00ede4c2 | Sripathi Kodi | [P9_TGETATTR] = v9fs_getattr, |
2671 | c79ce737 | Sripathi Kodi | [P9_TSETATTR] = v9fs_setattr, |
2672 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
2673 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
2674 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
2675 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
2676 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
2677 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
2678 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
2679 | 9f107513 | Anthony Liguori | #if 0
|
2680 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
2681 | 9f107513 | Anthony Liguori | #endif
|
2682 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
2683 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
2684 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
2685 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
2686 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
2687 | 9f107513 | Anthony Liguori | }; |
2688 | 9f107513 | Anthony Liguori | |
2689 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
2690 | 9f107513 | Anthony Liguori | { |
2691 | 9f107513 | Anthony Liguori | pdu_handler_t *handler; |
2692 | 9f107513 | Anthony Liguori | |
2693 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
2694 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
2695 | 9f107513 | Anthony Liguori | } |
2696 | 9f107513 | Anthony Liguori | |
2697 | 9f107513 | Anthony Liguori | BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); |
2698 | 9f107513 | Anthony Liguori | |
2699 | 9f107513 | Anthony Liguori | handler = pdu_handlers[pdu->id]; |
2700 | 9f107513 | Anthony Liguori | BUG_ON(handler == NULL);
|
2701 | 9f107513 | Anthony Liguori | |
2702 | 9f107513 | Anthony Liguori | handler(s, pdu); |
2703 | 9f107513 | Anthony Liguori | } |
2704 | 9f107513 | Anthony Liguori | |
2705 | 9f107513 | Anthony Liguori | static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) |
2706 | 9f107513 | Anthony Liguori | { |
2707 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
2708 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
2709 | 9f107513 | Anthony Liguori | ssize_t len; |
2710 | 9f107513 | Anthony Liguori | |
2711 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
2712 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
2713 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
2714 | 9f107513 | Anthony Liguori | |
2715 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
2716 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
2717 | 9f107513 | Anthony Liguori | |
2718 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
2719 | 9f107513 | Anthony Liguori | |
2720 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
2721 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
2722 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
2723 | 9f107513 | Anthony Liguori | |
2724 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
2725 | 9f107513 | Anthony Liguori | } |
2726 | 9f107513 | Anthony Liguori | |
2727 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
2728 | 9f107513 | Anthony Liguori | } |
2729 | 9f107513 | Anthony Liguori | |
2730 | 9f107513 | Anthony Liguori | static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
|
2731 | 9f107513 | Anthony Liguori | { |
2732 | 9f107513 | Anthony Liguori | features |= 1 << VIRTIO_9P_MOUNT_TAG;
|
2733 | 9f107513 | Anthony Liguori | return features;
|
2734 | 9f107513 | Anthony Liguori | } |
2735 | 9f107513 | Anthony Liguori | |
2736 | 9f107513 | Anthony Liguori | static V9fsState *to_virtio_9p(VirtIODevice *vdev)
|
2737 | 9f107513 | Anthony Liguori | { |
2738 | 9f107513 | Anthony Liguori | return (V9fsState *)vdev;
|
2739 | 9f107513 | Anthony Liguori | } |
2740 | 9f107513 | Anthony Liguori | |
2741 | 9f107513 | Anthony Liguori | static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) |
2742 | 9f107513 | Anthony Liguori | { |
2743 | 9f107513 | Anthony Liguori | struct virtio_9p_config *cfg;
|
2744 | 9f107513 | Anthony Liguori | V9fsState *s = to_virtio_9p(vdev); |
2745 | 9f107513 | Anthony Liguori | |
2746 | 9f107513 | Anthony Liguori | cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + |
2747 | 9f107513 | Anthony Liguori | s->tag_len); |
2748 | 9f107513 | Anthony Liguori | stw_raw(&cfg->tag_len, s->tag_len); |
2749 | 9f107513 | Anthony Liguori | memcpy(cfg->tag, s->tag, s->tag_len); |
2750 | 9f107513 | Anthony Liguori | memcpy(config, cfg, s->config_size); |
2751 | 9f107513 | Anthony Liguori | qemu_free(cfg); |
2752 | 9f107513 | Anthony Liguori | } |
2753 | 9f107513 | Anthony Liguori | |
2754 | 9f107513 | Anthony Liguori | VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) |
2755 | 9f107513 | Anthony Liguori | { |
2756 | 9f107513 | Anthony Liguori | V9fsState *s; |
2757 | 9f107513 | Anthony Liguori | int i, len;
|
2758 | 9f107513 | Anthony Liguori | struct stat stat;
|
2759 | 9f107513 | Anthony Liguori | FsTypeEntry *fse; |
2760 | 9f107513 | Anthony Liguori | |
2761 | 9f107513 | Anthony Liguori | |
2762 | 9f107513 | Anthony Liguori | s = (V9fsState *)virtio_common_init("virtio-9p",
|
2763 | 9f107513 | Anthony Liguori | VIRTIO_ID_9P, |
2764 | 9f107513 | Anthony Liguori | sizeof(struct virtio_9p_config)+ |
2765 | 9f107513 | Anthony Liguori | MAX_TAG_LEN, |
2766 | 9f107513 | Anthony Liguori | sizeof(V9fsState));
|
2767 | 9f107513 | Anthony Liguori | |
2768 | 9f107513 | Anthony Liguori | /* initialize pdu allocator */
|
2769 | 9f107513 | Anthony Liguori | QLIST_INIT(&s->free_list); |
2770 | 9f107513 | Anthony Liguori | for (i = 0; i < (MAX_REQ - 1); i++) { |
2771 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); |
2772 | 9f107513 | Anthony Liguori | } |
2773 | 9f107513 | Anthony Liguori | |
2774 | 9f107513 | Anthony Liguori | s->vq = virtio_add_queue(&s->vdev, MAX_REQ, handle_9p_output); |
2775 | 9f107513 | Anthony Liguori | |
2776 | 9f107513 | Anthony Liguori | fse = get_fsdev_fsentry(conf->fsdev_id); |
2777 | 9f107513 | Anthony Liguori | |
2778 | 9f107513 | Anthony Liguori | if (!fse) {
|
2779 | 9f107513 | Anthony Liguori | /* We don't have a fsdev identified by fsdev_id */
|
2780 | 9f107513 | Anthony Liguori | fprintf(stderr, "Virtio-9p device couldn't find fsdev "
|
2781 | 9f107513 | Anthony Liguori | "with the id %s\n", conf->fsdev_id);
|
2782 | 9f107513 | Anthony Liguori | exit(1);
|
2783 | 9f107513 | Anthony Liguori | } |
2784 | 9f107513 | Anthony Liguori | |
2785 | 9f107513 | Anthony Liguori | if (!fse->path || !conf->tag) {
|
2786 | 9f107513 | Anthony Liguori | /* we haven't specified a mount_tag or the path */
|
2787 | 9f107513 | Anthony Liguori | fprintf(stderr, "fsdev with id %s needs path "
|
2788 | 9f107513 | Anthony Liguori | "and Virtio-9p device needs mount_tag arguments\n",
|
2789 | 9f107513 | Anthony Liguori | conf->fsdev_id); |
2790 | 9f107513 | Anthony Liguori | exit(1);
|
2791 | 9f107513 | Anthony Liguori | } |
2792 | 9f107513 | Anthony Liguori | |
2793 | 758e8e38 | Venkateswararao Jujjuri (JV) | if (!strcmp(fse->security_model, "passthrough")) { |
2794 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the Fileserver set to client user credentials */
|
2795 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_PASSTHROUGH; |
2796 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else if (!strcmp(fse->security_model, "mapped")) { |
2797 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the fileserver are set to QEMU credentials.
|
2798 | 758e8e38 | Venkateswararao Jujjuri (JV) | * Client user credentials are saved in extended attributes.
|
2799 | 758e8e38 | Venkateswararao Jujjuri (JV) | */
|
2800 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_MAPPED; |
2801 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else {
|
2802 | 9ce56db6 | Venkateswararao Jujjuri (JV) | /* user haven't specified a correct security option */
|
2803 | 9ce56db6 | Venkateswararao Jujjuri (JV) | fprintf(stderr, "one of the following must be specified as the"
|
2804 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security option:\n\t security_model=passthrough \n\t "
|
2805 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security_model=mapped\n");
|
2806 | 9ce56db6 | Venkateswararao Jujjuri (JV) | return NULL; |
2807 | 9ce56db6 | Venkateswararao Jujjuri (JV) | } |
2808 | 9ce56db6 | Venkateswararao Jujjuri (JV) | |
2809 | 9f107513 | Anthony Liguori | if (lstat(fse->path, &stat)) {
|
2810 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s does not exist\n", fse->path);
|
2811 | 9f107513 | Anthony Liguori | exit(1);
|
2812 | 9f107513 | Anthony Liguori | } else if (!S_ISDIR(stat.st_mode)) { |
2813 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s is not a directory \n", fse->path);
|
2814 | 9f107513 | Anthony Liguori | exit(1);
|
2815 | 9f107513 | Anthony Liguori | } |
2816 | 9f107513 | Anthony Liguori | |
2817 | 9f107513 | Anthony Liguori | s->ctx.fs_root = qemu_strdup(fse->path); |
2818 | 9f107513 | Anthony Liguori | len = strlen(conf->tag); |
2819 | 9f107513 | Anthony Liguori | if (len > MAX_TAG_LEN) {
|
2820 | 9f107513 | Anthony Liguori | len = MAX_TAG_LEN; |
2821 | 9f107513 | Anthony Liguori | } |
2822 | 9f107513 | Anthony Liguori | /* s->tag is non-NULL terminated string */
|
2823 | 9f107513 | Anthony Liguori | s->tag = qemu_malloc(len); |
2824 | 9f107513 | Anthony Liguori | memcpy(s->tag, conf->tag, len); |
2825 | 9f107513 | Anthony Liguori | s->tag_len = len; |
2826 | 9f107513 | Anthony Liguori | s->ctx.uid = -1;
|
2827 | 9f107513 | Anthony Liguori | |
2828 | 9f107513 | Anthony Liguori | s->ops = fse->ops; |
2829 | 9f107513 | Anthony Liguori | s->vdev.get_features = virtio_9p_get_features; |
2830 | 9f107513 | Anthony Liguori | s->config_size = sizeof(struct virtio_9p_config) + |
2831 | 9f107513 | Anthony Liguori | s->tag_len; |
2832 | 9f107513 | Anthony Liguori | s->vdev.get_config = virtio_9p_get_config; |
2833 | 9f107513 | Anthony Liguori | |
2834 | 9f107513 | Anthony Liguori | return &s->vdev;
|
2835 | 9f107513 | Anthony Liguori | } |