root / hw / virtio-9p.c @ f7613bee
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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 | c494dd6f | Anthony Liguori | static int v9fs_do_mknod(V9fsState *s, V9fsString *path, mode_t mode, dev_t dev) |
164 | c494dd6f | Anthony Liguori | { |
165 | c494dd6f | Anthony Liguori | return s->ops->mknod(&s->ctx, path->data, mode, dev);
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166 | c494dd6f | Anthony Liguori | } |
167 | c494dd6f | Anthony Liguori | |
168 | c494dd6f | Anthony Liguori | static int v9fs_do_mksock(V9fsState *s, V9fsString *path) |
169 | c494dd6f | Anthony Liguori | { |
170 | c494dd6f | Anthony Liguori | return s->ops->mksock(&s->ctx, path->data);
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171 | c494dd6f | Anthony Liguori | } |
172 | c494dd6f | Anthony Liguori | |
173 | c494dd6f | Anthony Liguori | static int v9fs_do_mkdir(V9fsState *s, V9fsString *path, mode_t mode) |
174 | c494dd6f | Anthony Liguori | { |
175 | c494dd6f | Anthony Liguori | return s->ops->mkdir(&s->ctx, path->data, mode);
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176 | c494dd6f | Anthony Liguori | } |
177 | c494dd6f | Anthony Liguori | |
178 | c494dd6f | Anthony Liguori | static int v9fs_do_fstat(V9fsState *s, int fd, struct stat *stbuf) |
179 | c494dd6f | Anthony Liguori | { |
180 | c494dd6f | Anthony Liguori | return s->ops->fstat(&s->ctx, fd, stbuf);
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181 | c494dd6f | Anthony Liguori | } |
182 | c494dd6f | Anthony Liguori | |
183 | c494dd6f | Anthony Liguori | static int v9fs_do_open2(V9fsState *s, V9fsString *path, int flags, mode_t mode) |
184 | c494dd6f | Anthony Liguori | { |
185 | c494dd6f | Anthony Liguori | return s->ops->open2(&s->ctx, path->data, flags, mode);
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186 | c494dd6f | Anthony Liguori | } |
187 | c494dd6f | Anthony Liguori | |
188 | c494dd6f | Anthony Liguori | static int v9fs_do_symlink(V9fsState *s, V9fsString *oldpath, |
189 | c494dd6f | Anthony Liguori | V9fsString *newpath) |
190 | c494dd6f | Anthony Liguori | { |
191 | c494dd6f | Anthony Liguori | return s->ops->symlink(&s->ctx, oldpath->data, newpath->data);
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192 | c494dd6f | Anthony Liguori | } |
193 | c494dd6f | Anthony Liguori | |
194 | c494dd6f | Anthony Liguori | static int v9fs_do_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath) |
195 | c494dd6f | Anthony Liguori | { |
196 | c494dd6f | Anthony Liguori | return s->ops->link(&s->ctx, oldpath->data, newpath->data);
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197 | c494dd6f | Anthony Liguori | } |
198 | c494dd6f | Anthony Liguori | |
199 | 8cf89e00 | Anthony Liguori | static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size) |
200 | 8cf89e00 | Anthony Liguori | { |
201 | 8cf89e00 | Anthony Liguori | return s->ops->truncate(&s->ctx, path->data, size);
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202 | 8cf89e00 | Anthony Liguori | } |
203 | 8cf89e00 | Anthony Liguori | |
204 | 8cf89e00 | Anthony Liguori | static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath, |
205 | 8cf89e00 | Anthony Liguori | V9fsString *newpath) |
206 | 8cf89e00 | Anthony Liguori | { |
207 | 8cf89e00 | Anthony Liguori | return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
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208 | 8cf89e00 | Anthony Liguori | } |
209 | 8cf89e00 | Anthony Liguori | |
210 | 8cf89e00 | Anthony Liguori | static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid) |
211 | 8cf89e00 | Anthony Liguori | { |
212 | f7613bee | Venkateswararao Jujjuri (JV) | FsCred cred; |
213 | f7613bee | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
214 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
215 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
216 | f7613bee | Venkateswararao Jujjuri (JV) | |
217 | f7613bee | Venkateswararao Jujjuri (JV) | return s->ops->chown(&s->ctx, path->data, &cred);
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218 | 8cf89e00 | Anthony Liguori | } |
219 | 8cf89e00 | Anthony Liguori | |
220 | 8cf89e00 | Anthony Liguori | static int v9fs_do_utime(V9fsState *s, V9fsString *path, |
221 | 8cf89e00 | Anthony Liguori | const struct utimbuf *buf) |
222 | 8cf89e00 | Anthony Liguori | { |
223 | 8cf89e00 | Anthony Liguori | return s->ops->utime(&s->ctx, path->data, buf);
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224 | 8cf89e00 | Anthony Liguori | } |
225 | 8cf89e00 | Anthony Liguori | |
226 | 5bae1900 | Anthony Liguori | static int v9fs_do_remove(V9fsState *s, V9fsString *path) |
227 | 5bae1900 | Anthony Liguori | { |
228 | 5bae1900 | Anthony Liguori | return s->ops->remove(&s->ctx, path->data);
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229 | 5bae1900 | Anthony Liguori | } |
230 | 5bae1900 | Anthony Liguori | |
231 | 8cf89e00 | Anthony Liguori | static int v9fs_do_fsync(V9fsState *s, int fd) |
232 | 8cf89e00 | Anthony Liguori | { |
233 | 8cf89e00 | Anthony Liguori | return s->ops->fsync(&s->ctx, fd);
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234 | 8cf89e00 | Anthony Liguori | } |
235 | 8cf89e00 | Anthony Liguori | |
236 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
237 | a03f7874 | Anthony Liguori | { |
238 | a03f7874 | Anthony Liguori | str->data = NULL;
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239 | a03f7874 | Anthony Liguori | str->size = 0;
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240 | a03f7874 | Anthony Liguori | } |
241 | a03f7874 | Anthony Liguori | |
242 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
243 | a03f7874 | Anthony Liguori | { |
244 | a03f7874 | Anthony Liguori | qemu_free(str->data); |
245 | a03f7874 | Anthony Liguori | str->data = NULL;
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246 | a03f7874 | Anthony Liguori | str->size = 0;
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247 | a03f7874 | Anthony Liguori | } |
248 | a03f7874 | Anthony Liguori | |
249 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
250 | a03f7874 | Anthony Liguori | { |
251 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
252 | a03f7874 | Anthony Liguori | } |
253 | a03f7874 | Anthony Liguori | |
254 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
255 | a03f7874 | Anthony Liguori | { |
256 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
257 | a03f7874 | Anthony Liguori | |
258 | a03f7874 | Anthony Liguori | switch (type) {
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259 | a03f7874 | Anthony Liguori | case 'u': { |
260 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
261 | a03f7874 | Anthony Liguori | |
262 | a03f7874 | Anthony Liguori | do {
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263 | a03f7874 | Anthony Liguori | ret++; |
264 | a03f7874 | Anthony Liguori | num = num/10;
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265 | a03f7874 | Anthony Liguori | } while (num);
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266 | a03f7874 | Anthony Liguori | break;
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267 | a03f7874 | Anthony Liguori | } |
268 | a03f7874 | Anthony Liguori | default:
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269 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
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270 | a03f7874 | Anthony Liguori | return -1; |
271 | a03f7874 | Anthony Liguori | } |
272 | a03f7874 | Anthony Liguori | |
273 | a03f7874 | Anthony Liguori | return ret;
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274 | a03f7874 | Anthony Liguori | } |
275 | a03f7874 | Anthony Liguori | |
276 | a03f7874 | Anthony Liguori | static int v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
277 | a03f7874 | Anthony Liguori | { |
278 | a03f7874 | Anthony Liguori | va_list ap2; |
279 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
280 | a03f7874 | Anthony Liguori | int len = 0; |
281 | a03f7874 | Anthony Liguori | int nr_args = 0; |
282 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
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283 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
284 | a03f7874 | Anthony Liguori | |
285 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
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286 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
287 | a03f7874 | Anthony Liguori | nr_args++; |
288 | a03f7874 | Anthony Liguori | iter++; |
289 | a03f7874 | Anthony Liguori | } |
290 | a03f7874 | Anthony Liguori | |
291 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
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292 | a03f7874 | Anthony Liguori | |
293 | a03f7874 | Anthony Liguori | if (!nr_args) {
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294 | a03f7874 | Anthony Liguori | goto alloc_print;
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295 | a03f7874 | Anthony Liguori | } |
296 | a03f7874 | Anthony Liguori | |
297 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
298 | a03f7874 | Anthony Liguori | |
299 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
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300 | a03f7874 | Anthony Liguori | |
301 | a03f7874 | Anthony Liguori | /* Now parse the format string */
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302 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
303 | a03f7874 | Anthony Liguori | iter++; |
304 | a03f7874 | Anthony Liguori | switch (*iter) {
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305 | a03f7874 | Anthony Liguori | case 'u': |
306 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
307 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
308 | a03f7874 | Anthony Liguori | break;
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309 | a03f7874 | Anthony Liguori | case 's': |
310 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
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311 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
312 | a03f7874 | Anthony Liguori | break;
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313 | a03f7874 | Anthony Liguori | case 'c': |
314 | a03f7874 | Anthony Liguori | len += 1;
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315 | a03f7874 | Anthony Liguori | break;
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316 | a03f7874 | Anthony Liguori | default:
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317 | a03f7874 | Anthony Liguori | fprintf(stderr, |
318 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
|
319 | a03f7874 | Anthony Liguori | return -1; |
320 | a03f7874 | Anthony Liguori | } |
321 | a03f7874 | Anthony Liguori | iter++; |
322 | a03f7874 | Anthony Liguori | } |
323 | a03f7874 | Anthony Liguori | |
324 | a03f7874 | Anthony Liguori | alloc_print:
|
325 | a03f7874 | Anthony Liguori | *strp = qemu_malloc((len + 1) * sizeof(**strp)); |
326 | a03f7874 | Anthony Liguori | |
327 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
|
328 | a03f7874 | Anthony Liguori | } |
329 | a03f7874 | Anthony Liguori | |
330 | a03f7874 | Anthony Liguori | static void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
331 | a03f7874 | Anthony Liguori | { |
332 | a03f7874 | Anthony Liguori | va_list ap; |
333 | a03f7874 | Anthony Liguori | int err;
|
334 | a03f7874 | Anthony Liguori | |
335 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
336 | a03f7874 | Anthony Liguori | |
337 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
338 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
339 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
|
340 | a03f7874 | Anthony Liguori | va_end(ap); |
341 | a03f7874 | Anthony Liguori | |
342 | a03f7874 | Anthony Liguori | str->size = err; |
343 | a03f7874 | Anthony Liguori | } |
344 | a03f7874 | Anthony Liguori | |
345 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
346 | a03f7874 | Anthony Liguori | { |
347 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
348 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
|
349 | a03f7874 | Anthony Liguori | } |
350 | a03f7874 | Anthony Liguori | |
351 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
|
352 | a03f7874 | Anthony Liguori | { |
353 | a03f7874 | Anthony Liguori | return str->size;
|
354 | a03f7874 | Anthony Liguori | } |
355 | a03f7874 | Anthony Liguori | |
356 | 286d5652 | Anthony Liguori | static V9fsFidState *lookup_fid(V9fsState *s, int32_t fid)
|
357 | 286d5652 | Anthony Liguori | { |
358 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
359 | 286d5652 | Anthony Liguori | |
360 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
|
361 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
|
362 | 286d5652 | Anthony Liguori | return f;
|
363 | 286d5652 | Anthony Liguori | } |
364 | 286d5652 | Anthony Liguori | } |
365 | 286d5652 | Anthony Liguori | |
366 | 286d5652 | Anthony Liguori | return NULL; |
367 | 286d5652 | Anthony Liguori | } |
368 | 286d5652 | Anthony Liguori | |
369 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
|
370 | 286d5652 | Anthony Liguori | { |
371 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
372 | 286d5652 | Anthony Liguori | |
373 | 286d5652 | Anthony Liguori | f = lookup_fid(s, fid); |
374 | 286d5652 | Anthony Liguori | if (f) {
|
375 | 286d5652 | Anthony Liguori | return NULL; |
376 | 286d5652 | Anthony Liguori | } |
377 | 286d5652 | Anthony Liguori | |
378 | 286d5652 | Anthony Liguori | f = qemu_mallocz(sizeof(V9fsFidState));
|
379 | 286d5652 | Anthony Liguori | |
380 | 286d5652 | Anthony Liguori | f->fid = fid; |
381 | 286d5652 | Anthony Liguori | f->fd = -1;
|
382 | 286d5652 | Anthony Liguori | f->dir = NULL;
|
383 | 286d5652 | Anthony Liguori | |
384 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
385 | 286d5652 | Anthony Liguori | s->fid_list = f; |
386 | 286d5652 | Anthony Liguori | |
387 | 286d5652 | Anthony Liguori | return f;
|
388 | 286d5652 | Anthony Liguori | } |
389 | 286d5652 | Anthony Liguori | |
390 | 286d5652 | Anthony Liguori | static int free_fid(V9fsState *s, int32_t fid) |
391 | 286d5652 | Anthony Liguori | { |
392 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
393 | 286d5652 | Anthony Liguori | |
394 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
395 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
396 | 286d5652 | Anthony Liguori | break;
|
397 | 286d5652 | Anthony Liguori | } |
398 | 286d5652 | Anthony Liguori | } |
399 | 286d5652 | Anthony Liguori | |
400 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
401 | 286d5652 | Anthony Liguori | return -ENOENT;
|
402 | 286d5652 | Anthony Liguori | } |
403 | 286d5652 | Anthony Liguori | |
404 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
405 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
406 | 286d5652 | Anthony Liguori | |
407 | 286d5652 | Anthony Liguori | if (fidp->fd != -1) { |
408 | 286d5652 | Anthony Liguori | v9fs_do_close(s, fidp->fd); |
409 | 286d5652 | Anthony Liguori | } |
410 | 286d5652 | Anthony Liguori | if (fidp->dir) {
|
411 | 286d5652 | Anthony Liguori | v9fs_do_closedir(s, fidp->dir); |
412 | 286d5652 | Anthony Liguori | } |
413 | 286d5652 | Anthony Liguori | v9fs_string_free(&fidp->path); |
414 | 286d5652 | Anthony Liguori | qemu_free(fidp); |
415 | 286d5652 | Anthony Liguori | |
416 | 286d5652 | Anthony Liguori | return 0; |
417 | 286d5652 | Anthony Liguori | } |
418 | 286d5652 | Anthony Liguori | |
419 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
420 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
421 | 286d5652 | Anthony Liguori | |
422 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
423 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
424 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
425 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
426 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
427 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
428 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
429 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
430 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
431 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
432 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
433 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
434 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
435 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
436 | 286d5652 | Anthony Liguori | |
437 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
438 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
439 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
440 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
441 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
442 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
443 | 286d5652 | Anthony Liguori | |
444 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
445 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
446 | 286d5652 | Anthony Liguori | { |
447 | 286d5652 | Anthony Liguori | size_t size; |
448 | 286d5652 | Anthony Liguori | |
449 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
450 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
451 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
452 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
453 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
454 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
455 | 286d5652 | Anthony Liguori | } |
456 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
457 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
458 | 286d5652 | Anthony Liguori | } |
459 | 286d5652 | Anthony Liguori | } |
460 | 286d5652 | Anthony Liguori | |
461 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
462 | 286d5652 | Anthony Liguori | { |
463 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
464 | 286d5652 | Anthony Liguori | int err;
|
465 | 286d5652 | Anthony Liguori | |
466 | 286d5652 | Anthony Liguori | err = v9fs_do_lstat(s, &fidp->path, &stbuf); |
467 | 286d5652 | Anthony Liguori | if (err) {
|
468 | 286d5652 | Anthony Liguori | return err;
|
469 | 286d5652 | Anthony Liguori | } |
470 | 286d5652 | Anthony Liguori | |
471 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
472 | 286d5652 | Anthony Liguori | return 0; |
473 | 286d5652 | Anthony Liguori | } |
474 | 286d5652 | Anthony Liguori | |
475 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
476 | 9f107513 | Anthony Liguori | { |
477 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
478 | 9f107513 | Anthony Liguori | |
479 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
480 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
481 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
482 | 9f107513 | Anthony Liguori | } |
483 | 9f107513 | Anthony Liguori | return pdu;
|
484 | 9f107513 | Anthony Liguori | } |
485 | 9f107513 | Anthony Liguori | |
486 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
487 | 9f107513 | Anthony Liguori | { |
488 | 9f107513 | Anthony Liguori | if (pdu) {
|
489 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
490 | 9f107513 | Anthony Liguori | } |
491 | 9f107513 | Anthony Liguori | } |
492 | 9f107513 | Anthony Liguori | |
493 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
494 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
495 | 9f107513 | Anthony Liguori | { |
496 | 9f107513 | Anthony Liguori | int i = 0; |
497 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
498 | 9f107513 | Anthony Liguori | |
499 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
500 | 9f107513 | Anthony Liguori | size_t len; |
501 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
502 | 9f107513 | Anthony Liguori | /* skip this sg */
|
503 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
504 | 9f107513 | Anthony Liguori | continue;
|
505 | 9f107513 | Anthony Liguori | } else {
|
506 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
507 | 9f107513 | Anthony Liguori | if (pack) {
|
508 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
509 | 9f107513 | Anthony Liguori | } else {
|
510 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
511 | 9f107513 | Anthony Liguori | } |
512 | 9f107513 | Anthony Liguori | size -= len; |
513 | 9f107513 | Anthony Liguori | copied += len; |
514 | 9f107513 | Anthony Liguori | addr += len; |
515 | 9f107513 | Anthony Liguori | if (size) {
|
516 | 9f107513 | Anthony Liguori | offset = 0;
|
517 | 9f107513 | Anthony Liguori | continue;
|
518 | 9f107513 | Anthony Liguori | } |
519 | 9f107513 | Anthony Liguori | } |
520 | 9f107513 | Anthony Liguori | } |
521 | 9f107513 | Anthony Liguori | |
522 | 9f107513 | Anthony Liguori | return copied;
|
523 | 9f107513 | Anthony Liguori | } |
524 | 9f107513 | Anthony Liguori | |
525 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
526 | 405a549a | Anthony Liguori | { |
527 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
528 | 405a549a | Anthony Liguori | offset, size, 0);
|
529 | 405a549a | Anthony Liguori | } |
530 | 405a549a | Anthony Liguori | |
531 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
532 | 405a549a | Anthony Liguori | size_t size) |
533 | 405a549a | Anthony Liguori | { |
534 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
535 | 405a549a | Anthony Liguori | offset, size, 1);
|
536 | 405a549a | Anthony Liguori | } |
537 | 405a549a | Anthony Liguori | |
538 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
539 | 405a549a | Anthony Liguori | { |
540 | 405a549a | Anthony Liguori | size_t pos = 0;
|
541 | 405a549a | Anthony Liguori | int i, j;
|
542 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
543 | 405a549a | Anthony Liguori | unsigned int num; |
544 | 405a549a | Anthony Liguori | |
545 | 405a549a | Anthony Liguori | if (rx) {
|
546 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
547 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
548 | 405a549a | Anthony Liguori | } else {
|
549 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
550 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
551 | 405a549a | Anthony Liguori | } |
552 | 405a549a | Anthony Liguori | |
553 | 405a549a | Anthony Liguori | j = 0;
|
554 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
555 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
556 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
557 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
558 | 405a549a | Anthony Liguori | j++; |
559 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
560 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
561 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
562 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
563 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
564 | 405a549a | Anthony Liguori | j++; |
565 | 405a549a | Anthony Liguori | } |
566 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
567 | 405a549a | Anthony Liguori | } |
568 | 405a549a | Anthony Liguori | |
569 | 405a549a | Anthony Liguori | return j;
|
570 | 405a549a | Anthony Liguori | } |
571 | 405a549a | Anthony Liguori | |
572 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
573 | 405a549a | Anthony Liguori | { |
574 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
575 | 405a549a | Anthony Liguori | va_list ap; |
576 | 405a549a | Anthony Liguori | int i;
|
577 | 405a549a | Anthony Liguori | |
578 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
579 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
580 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
581 | 405a549a | Anthony Liguori | case 'b': { |
582 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
583 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
584 | 405a549a | Anthony Liguori | break;
|
585 | 405a549a | Anthony Liguori | } |
586 | 405a549a | Anthony Liguori | case 'w': { |
587 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
588 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
589 | 405a549a | Anthony Liguori | val = le16_to_cpupu(valp); |
590 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
591 | 405a549a | Anthony Liguori | *valp = val; |
592 | 405a549a | Anthony Liguori | break;
|
593 | 405a549a | Anthony Liguori | } |
594 | 405a549a | Anthony Liguori | case 'd': { |
595 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
596 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
597 | 405a549a | Anthony Liguori | val = le32_to_cpupu(valp); |
598 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
599 | 405a549a | Anthony Liguori | *valp = val; |
600 | 405a549a | Anthony Liguori | break;
|
601 | 405a549a | Anthony Liguori | } |
602 | 405a549a | Anthony Liguori | case 'q': { |
603 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
604 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
605 | 405a549a | Anthony Liguori | val = le64_to_cpup(valp); |
606 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
607 | 405a549a | Anthony Liguori | *valp = val; |
608 | 405a549a | Anthony Liguori | break;
|
609 | 405a549a | Anthony Liguori | } |
610 | 405a549a | Anthony Liguori | case 'v': { |
611 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
612 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
613 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
614 | 405a549a | Anthony Liguori | break;
|
615 | 405a549a | Anthony Liguori | } |
616 | 405a549a | Anthony Liguori | case 's': { |
617 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
618 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
619 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
620 | 405a549a | Anthony Liguori | str->data = qemu_malloc(str->size + 1);
|
621 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
622 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
623 | 405a549a | Anthony Liguori | break;
|
624 | 405a549a | Anthony Liguori | } |
625 | 405a549a | Anthony Liguori | case 'Q': { |
626 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
627 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
628 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
629 | 405a549a | Anthony Liguori | break;
|
630 | 405a549a | Anthony Liguori | } |
631 | 405a549a | Anthony Liguori | case 'S': { |
632 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
633 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
634 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
635 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
636 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
637 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
638 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
639 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
640 | 405a549a | Anthony Liguori | &statp->n_muid); |
641 | 405a549a | Anthony Liguori | break;
|
642 | 405a549a | Anthony Liguori | } |
643 | 405a549a | Anthony Liguori | default:
|
644 | 405a549a | Anthony Liguori | break;
|
645 | 405a549a | Anthony Liguori | } |
646 | 405a549a | Anthony Liguori | } |
647 | 405a549a | Anthony Liguori | |
648 | 405a549a | Anthony Liguori | va_end(ap); |
649 | 405a549a | Anthony Liguori | |
650 | 405a549a | Anthony Liguori | return offset - old_offset;
|
651 | 405a549a | Anthony Liguori | } |
652 | 405a549a | Anthony Liguori | |
653 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
654 | 405a549a | Anthony Liguori | { |
655 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
656 | 405a549a | Anthony Liguori | va_list ap; |
657 | 405a549a | Anthony Liguori | int i;
|
658 | 405a549a | Anthony Liguori | |
659 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
660 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
661 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
662 | 405a549a | Anthony Liguori | case 'b': { |
663 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
664 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
665 | 405a549a | Anthony Liguori | break;
|
666 | 405a549a | Anthony Liguori | } |
667 | 405a549a | Anthony Liguori | case 'w': { |
668 | 405a549a | Anthony Liguori | uint16_t val; |
669 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
670 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
671 | 405a549a | Anthony Liguori | break;
|
672 | 405a549a | Anthony Liguori | } |
673 | 405a549a | Anthony Liguori | case 'd': { |
674 | 405a549a | Anthony Liguori | uint32_t val; |
675 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
676 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
677 | 405a549a | Anthony Liguori | break;
|
678 | 405a549a | Anthony Liguori | } |
679 | 405a549a | Anthony Liguori | case 'q': { |
680 | 405a549a | Anthony Liguori | uint64_t val; |
681 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
682 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
683 | 405a549a | Anthony Liguori | break;
|
684 | 405a549a | Anthony Liguori | } |
685 | 405a549a | Anthony Liguori | case 'v': { |
686 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
687 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
688 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
689 | 405a549a | Anthony Liguori | break;
|
690 | 405a549a | Anthony Liguori | } |
691 | 405a549a | Anthony Liguori | case 's': { |
692 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
693 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
694 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
695 | 405a549a | Anthony Liguori | break;
|
696 | 405a549a | Anthony Liguori | } |
697 | 405a549a | Anthony Liguori | case 'Q': { |
698 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
699 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
700 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
701 | 405a549a | Anthony Liguori | break;
|
702 | 405a549a | Anthony Liguori | } |
703 | 405a549a | Anthony Liguori | case 'S': { |
704 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
705 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
706 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
707 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
708 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
709 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
710 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
711 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
712 | 405a549a | Anthony Liguori | break;
|
713 | 405a549a | Anthony Liguori | } |
714 | 405a549a | Anthony Liguori | default:
|
715 | 405a549a | Anthony Liguori | break;
|
716 | 405a549a | Anthony Liguori | } |
717 | 405a549a | Anthony Liguori | } |
718 | 405a549a | Anthony Liguori | va_end(ap); |
719 | 405a549a | Anthony Liguori | |
720 | 405a549a | Anthony Liguori | return offset - old_offset;
|
721 | 405a549a | Anthony Liguori | } |
722 | 405a549a | Anthony Liguori | |
723 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
724 | 405a549a | Anthony Liguori | { |
725 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
726 | 405a549a | Anthony Liguori | |
727 | 405a549a | Anthony Liguori | if (len < 0) { |
728 | 405a549a | Anthony Liguori | V9fsString str; |
729 | 405a549a | Anthony Liguori | int err = -len;
|
730 | 405a549a | Anthony Liguori | |
731 | 405a549a | Anthony Liguori | str.data = strerror(err); |
732 | 405a549a | Anthony Liguori | str.size = strlen(str.data); |
733 | 405a549a | Anthony Liguori | |
734 | 405a549a | Anthony Liguori | len = 7;
|
735 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "s", &str);
|
736 | 405a549a | Anthony Liguori | if (dotu) {
|
737 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "d", err);
|
738 | 405a549a | Anthony Liguori | } |
739 | 405a549a | Anthony Liguori | |
740 | 405a549a | Anthony Liguori | id = P9_RERROR; |
741 | 405a549a | Anthony Liguori | } |
742 | 405a549a | Anthony Liguori | |
743 | 405a549a | Anthony Liguori | /* fill out the header */
|
744 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
745 | 405a549a | Anthony Liguori | |
746 | 405a549a | Anthony Liguori | /* keep these in sync */
|
747 | 405a549a | Anthony Liguori | pdu->size = len; |
748 | 405a549a | Anthony Liguori | pdu->id = id; |
749 | 405a549a | Anthony Liguori | |
750 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
751 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
752 | 405a549a | Anthony Liguori | |
753 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
754 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
755 | 405a549a | Anthony Liguori | |
756 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
757 | 405a549a | Anthony Liguori | } |
758 | 405a549a | Anthony Liguori | |
759 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
760 | bb9e3216 | Anthony Liguori | { |
761 | bb9e3216 | Anthony Liguori | mode_t ret; |
762 | bb9e3216 | Anthony Liguori | |
763 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
764 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
765 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
766 | bb9e3216 | Anthony Liguori | } |
767 | bb9e3216 | Anthony Liguori | |
768 | bb9e3216 | Anthony Liguori | if (dotu) {
|
769 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SYMLINK) {
|
770 | bb9e3216 | Anthony Liguori | ret |= S_IFLNK; |
771 | bb9e3216 | Anthony Liguori | } |
772 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SOCKET) {
|
773 | bb9e3216 | Anthony Liguori | ret |= S_IFSOCK; |
774 | bb9e3216 | Anthony Liguori | } |
775 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
776 | bb9e3216 | Anthony Liguori | ret |= S_IFIFO; |
777 | bb9e3216 | Anthony Liguori | } |
778 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DEVICE) {
|
779 | bb9e3216 | Anthony Liguori | if (extension && extension->data[0] == 'c') { |
780 | bb9e3216 | Anthony Liguori | ret |= S_IFCHR; |
781 | bb9e3216 | Anthony Liguori | } else {
|
782 | bb9e3216 | Anthony Liguori | ret |= S_IFBLK; |
783 | bb9e3216 | Anthony Liguori | } |
784 | bb9e3216 | Anthony Liguori | } |
785 | bb9e3216 | Anthony Liguori | } |
786 | bb9e3216 | Anthony Liguori | |
787 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
788 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
789 | bb9e3216 | Anthony Liguori | } |
790 | bb9e3216 | Anthony Liguori | |
791 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
792 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
793 | bb9e3216 | Anthony Liguori | } |
794 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
795 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
796 | bb9e3216 | Anthony Liguori | } |
797 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
798 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
799 | bb9e3216 | Anthony Liguori | } |
800 | bb9e3216 | Anthony Liguori | |
801 | bb9e3216 | Anthony Liguori | return ret;
|
802 | bb9e3216 | Anthony Liguori | } |
803 | bb9e3216 | Anthony Liguori | |
804 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
805 | bb9e3216 | Anthony Liguori | { |
806 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
807 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
808 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
809 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
810 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
811 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
812 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
813 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
814 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
815 | bb9e3216 | Anthony Liguori | !stat->name.size && |
816 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
817 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
818 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
819 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
820 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
821 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
822 | bb9e3216 | Anthony Liguori | return 1; |
823 | bb9e3216 | Anthony Liguori | } |
824 | bb9e3216 | Anthony Liguori | |
825 | bb9e3216 | Anthony Liguori | return 0; |
826 | bb9e3216 | Anthony Liguori | } |
827 | bb9e3216 | Anthony Liguori | |
828 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
829 | bb9e3216 | Anthony Liguori | { |
830 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
831 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
832 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
833 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
834 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
835 | bb9e3216 | Anthony Liguori | } |
836 | bb9e3216 | Anthony Liguori | |
837 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
838 | bb9e3216 | Anthony Liguori | { |
839 | bb9e3216 | Anthony Liguori | uint32_t mode; |
840 | bb9e3216 | Anthony Liguori | |
841 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
842 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
843 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
844 | bb9e3216 | Anthony Liguori | } |
845 | bb9e3216 | Anthony Liguori | |
846 | bb9e3216 | Anthony Liguori | if (dotu) {
|
847 | bb9e3216 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
848 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SYMLINK; |
849 | bb9e3216 | Anthony Liguori | } |
850 | bb9e3216 | Anthony Liguori | |
851 | bb9e3216 | Anthony Liguori | if (S_ISSOCK(stbuf->st_mode)) {
|
852 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SOCKET; |
853 | bb9e3216 | Anthony Liguori | } |
854 | bb9e3216 | Anthony Liguori | |
855 | bb9e3216 | Anthony Liguori | if (S_ISFIFO(stbuf->st_mode)) {
|
856 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_NAMED_PIPE; |
857 | bb9e3216 | Anthony Liguori | } |
858 | bb9e3216 | Anthony Liguori | |
859 | bb9e3216 | Anthony Liguori | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
860 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DEVICE; |
861 | bb9e3216 | Anthony Liguori | } |
862 | bb9e3216 | Anthony Liguori | |
863 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISUID) {
|
864 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETUID; |
865 | bb9e3216 | Anthony Liguori | } |
866 | bb9e3216 | Anthony Liguori | |
867 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISGID) {
|
868 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETGID; |
869 | bb9e3216 | Anthony Liguori | } |
870 | bb9e3216 | Anthony Liguori | |
871 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISVTX) {
|
872 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETVTX; |
873 | bb9e3216 | Anthony Liguori | } |
874 | bb9e3216 | Anthony Liguori | } |
875 | bb9e3216 | Anthony Liguori | |
876 | bb9e3216 | Anthony Liguori | return mode;
|
877 | bb9e3216 | Anthony Liguori | } |
878 | bb9e3216 | Anthony Liguori | |
879 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
880 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
881 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
882 | bb9e3216 | Anthony Liguori | { |
883 | bb9e3216 | Anthony Liguori | int err;
|
884 | bb9e3216 | Anthony Liguori | const char *str; |
885 | bb9e3216 | Anthony Liguori | |
886 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
887 | bb9e3216 | Anthony Liguori | |
888 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
889 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
890 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
891 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
892 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
893 | bb9e3216 | Anthony Liguori | |
894 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
895 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
896 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
897 | bb9e3216 | Anthony Liguori | |
898 | bb9e3216 | Anthony Liguori | if (dotu) {
|
899 | bb9e3216 | Anthony Liguori | v9stat->n_uid = stbuf->st_uid; |
900 | bb9e3216 | Anthony Liguori | v9stat->n_gid = stbuf->st_gid; |
901 | bb9e3216 | Anthony Liguori | v9stat->n_muid = 0;
|
902 | bb9e3216 | Anthony Liguori | |
903 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->extension); |
904 | bb9e3216 | Anthony Liguori | |
905 | bb9e3216 | Anthony Liguori | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
906 | bb9e3216 | Anthony Liguori | err = v9fs_do_readlink(s, name, &v9stat->extension); |
907 | bb9e3216 | Anthony Liguori | if (err == -1) { |
908 | bb9e3216 | Anthony Liguori | err = -errno; |
909 | bb9e3216 | Anthony Liguori | return err;
|
910 | bb9e3216 | Anthony Liguori | } |
911 | bb9e3216 | Anthony Liguori | v9stat->extension.data[err] = 0;
|
912 | bb9e3216 | Anthony Liguori | v9stat->extension.size = err; |
913 | bb9e3216 | Anthony Liguori | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
914 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
915 | bb9e3216 | Anthony Liguori | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
916 | bb9e3216 | Anthony Liguori | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
917 | bb9e3216 | Anthony Liguori | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
918 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%s %u",
|
919 | bb9e3216 | Anthony Liguori | "HARDLINKCOUNT", stbuf->st_nlink);
|
920 | bb9e3216 | Anthony Liguori | } |
921 | bb9e3216 | Anthony Liguori | } |
922 | bb9e3216 | Anthony Liguori | |
923 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
924 | bb9e3216 | Anthony Liguori | if (str) {
|
925 | bb9e3216 | Anthony Liguori | str += 1;
|
926 | bb9e3216 | Anthony Liguori | } else {
|
927 | bb9e3216 | Anthony Liguori | str = name->data; |
928 | bb9e3216 | Anthony Liguori | } |
929 | bb9e3216 | Anthony Liguori | |
930 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
931 | bb9e3216 | Anthony Liguori | |
932 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
933 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
934 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
935 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
936 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
937 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
938 | bb9e3216 | Anthony Liguori | return 0; |
939 | bb9e3216 | Anthony Liguori | } |
940 | bb9e3216 | Anthony Liguori | |
941 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
942 | 1f5a89bf | Anthony Liguori | { |
943 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
944 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
945 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
946 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
947 | 1f5a89bf | Anthony Liguori | len = 0;
|
948 | 1f5a89bf | Anthony Liguori | } else {
|
949 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
950 | 1f5a89bf | Anthony Liguori | sg++; |
951 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
952 | 1f5a89bf | Anthony Liguori | } |
953 | 1f5a89bf | Anthony Liguori | } |
954 | 1f5a89bf | Anthony Liguori | |
955 | 1f5a89bf | Anthony Liguori | return sg;
|
956 | 1f5a89bf | Anthony Liguori | } |
957 | 1f5a89bf | Anthony Liguori | |
958 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
959 | 1f5a89bf | Anthony Liguori | { |
960 | 1f5a89bf | Anthony Liguori | int i;
|
961 | 1f5a89bf | Anthony Liguori | int total = 0; |
962 | 1f5a89bf | Anthony Liguori | |
963 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
964 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
965 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
966 | 1f5a89bf | Anthony Liguori | i++; |
967 | 1f5a89bf | Anthony Liguori | break;
|
968 | 1f5a89bf | Anthony Liguori | } |
969 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
970 | 1f5a89bf | Anthony Liguori | } |
971 | 1f5a89bf | Anthony Liguori | |
972 | 1f5a89bf | Anthony Liguori | *cnt = i; |
973 | 1f5a89bf | Anthony Liguori | |
974 | 1f5a89bf | Anthony Liguori | return sg;
|
975 | 1f5a89bf | Anthony Liguori | } |
976 | 1f5a89bf | Anthony Liguori | |
977 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
978 | 1f5a89bf | Anthony Liguori | { |
979 | 1f5a89bf | Anthony Liguori | int i;
|
980 | 1f5a89bf | Anthony Liguori | |
981 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
982 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
983 | 1f5a89bf | Anthony Liguori | if (i) {
|
984 | 1f5a89bf | Anthony Liguori | printf(", ");
|
985 | 1f5a89bf | Anthony Liguori | } |
986 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
987 | 1f5a89bf | Anthony Liguori | } |
988 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
989 | 1f5a89bf | Anthony Liguori | } |
990 | 1f5a89bf | Anthony Liguori | |
991 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
992 | 8cf89e00 | Anthony Liguori | { |
993 | 8cf89e00 | Anthony Liguori | V9fsString str; |
994 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
995 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
996 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
997 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
998 | 8cf89e00 | Anthony Liguori | } |
999 | 8cf89e00 | Anthony Liguori | |
1000 | 9f107513 | Anthony Liguori | static void v9fs_version(V9fsState *s, V9fsPDU *pdu) |
1001 | 9f107513 | Anthony Liguori | { |
1002 | 92c1ad03 | Anthony Liguori | int32_t msize; |
1003 | 92c1ad03 | Anthony Liguori | V9fsString version; |
1004 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
1005 | 92c1ad03 | Anthony Liguori | |
1006 | 92c1ad03 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ds", &msize, &version);
|
1007 | 92c1ad03 | Anthony Liguori | |
1008 | 92c1ad03 | Anthony Liguori | if (strcmp(version.data, "9P2000.u")) { |
1009 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
1010 | 9f107513 | Anthony Liguori | } |
1011 | 92c1ad03 | Anthony Liguori | |
1012 | 92c1ad03 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "ds", msize, &version);
|
1013 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
1014 | 92c1ad03 | Anthony Liguori | |
1015 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
1016 | 9f107513 | Anthony Liguori | } |
1017 | 9f107513 | Anthony Liguori | |
1018 | 9f107513 | Anthony Liguori | static void v9fs_attach(V9fsState *s, V9fsPDU *pdu) |
1019 | 9f107513 | Anthony Liguori | { |
1020 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
1021 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
1022 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
1023 | 955efc47 | Anthony Liguori | V9fsQID qid; |
1024 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
1025 | 955efc47 | Anthony Liguori | ssize_t err; |
1026 | 955efc47 | Anthony Liguori | |
1027 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
1028 | 955efc47 | Anthony Liguori | |
1029 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
1030 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
1031 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1032 | 955efc47 | Anthony Liguori | goto out;
|
1033 | 9f107513 | Anthony Liguori | } |
1034 | 955efc47 | Anthony Liguori | |
1035 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
1036 | 955efc47 | Anthony Liguori | |
1037 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
1038 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
1039 | 955efc47 | Anthony Liguori | if (err) {
|
1040 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1041 | 955efc47 | Anthony Liguori | free_fid(s, fid); |
1042 | 955efc47 | Anthony Liguori | goto out;
|
1043 | 955efc47 | Anthony Liguori | } |
1044 | 955efc47 | Anthony Liguori | |
1045 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
1046 | 955efc47 | Anthony Liguori | |
1047 | 955efc47 | Anthony Liguori | err = offset; |
1048 | 955efc47 | Anthony Liguori | out:
|
1049 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
1050 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
1051 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1052 | 9f107513 | Anthony Liguori | } |
1053 | 9f107513 | Anthony Liguori | |
1054 | 4da7d3fa | Anthony Liguori | static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err) |
1055 | 4da7d3fa | Anthony Liguori | { |
1056 | 4da7d3fa | Anthony Liguori | if (err == -1) { |
1057 | 4da7d3fa | Anthony Liguori | err = -errno; |
1058 | 4da7d3fa | Anthony Liguori | goto out;
|
1059 | 4da7d3fa | Anthony Liguori | } |
1060 | 4da7d3fa | Anthony Liguori | |
1061 | 4da7d3fa | Anthony Liguori | err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat); |
1062 | 4da7d3fa | Anthony Liguori | if (err) {
|
1063 | 4da7d3fa | Anthony Liguori | goto out;
|
1064 | 4da7d3fa | Anthony Liguori | } |
1065 | 4da7d3fa | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat); |
1066 | 4da7d3fa | Anthony Liguori | err = vs->offset; |
1067 | 4da7d3fa | Anthony Liguori | |
1068 | 4da7d3fa | Anthony Liguori | out:
|
1069 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1070 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1071 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1072 | 4da7d3fa | Anthony Liguori | } |
1073 | 4da7d3fa | Anthony Liguori | |
1074 | 9f107513 | Anthony Liguori | static void v9fs_stat(V9fsState *s, V9fsPDU *pdu) |
1075 | 9f107513 | Anthony Liguori | { |
1076 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1077 | 4da7d3fa | Anthony Liguori | V9fsStatState *vs; |
1078 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1079 | 4da7d3fa | Anthony Liguori | |
1080 | 4da7d3fa | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1081 | 4da7d3fa | Anthony Liguori | vs->pdu = pdu; |
1082 | 4da7d3fa | Anthony Liguori | vs->offset = 7;
|
1083 | 4da7d3fa | Anthony Liguori | |
1084 | 4da7d3fa | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1085 | 4da7d3fa | Anthony Liguori | |
1086 | 4da7d3fa | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1087 | 4da7d3fa | Anthony Liguori | |
1088 | 4da7d3fa | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1089 | 4da7d3fa | Anthony Liguori | if (vs->fidp == NULL) { |
1090 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1091 | 4da7d3fa | Anthony Liguori | goto out;
|
1092 | 9f107513 | Anthony Liguori | } |
1093 | 4da7d3fa | Anthony Liguori | |
1094 | 4da7d3fa | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1095 | 4da7d3fa | Anthony Liguori | v9fs_stat_post_lstat(s, vs, err); |
1096 | 4da7d3fa | Anthony Liguori | return;
|
1097 | 4da7d3fa | Anthony Liguori | |
1098 | 4da7d3fa | Anthony Liguori | out:
|
1099 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1100 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1101 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1102 | 9f107513 | Anthony Liguori | } |
1103 | 9f107513 | Anthony Liguori | |
1104 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_complete(V9fsState *s, V9fsWalkState *vs, int err) |
1105 | ff5e54c9 | Anthony Liguori | { |
1106 | ff5e54c9 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1107 | ff5e54c9 | Anthony Liguori | |
1108 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1109 | ff5e54c9 | Anthony Liguori | for (vs->name_idx = 0; vs->name_idx < vs->nwnames; vs->name_idx++) { |
1110 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->wnames[vs->name_idx]); |
1111 | ff5e54c9 | Anthony Liguori | } |
1112 | ff5e54c9 | Anthony Liguori | |
1113 | ff5e54c9 | Anthony Liguori | qemu_free(vs->wnames); |
1114 | ff5e54c9 | Anthony Liguori | qemu_free(vs->qids); |
1115 | ff5e54c9 | Anthony Liguori | } |
1116 | ff5e54c9 | Anthony Liguori | } |
1117 | ff5e54c9 | Anthony Liguori | |
1118 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_marshal(V9fsWalkState *vs) |
1119 | ff5e54c9 | Anthony Liguori | { |
1120 | ff5e54c9 | Anthony Liguori | int i;
|
1121 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1122 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "w", vs->nwnames);
|
1123 | ff5e54c9 | Anthony Liguori | |
1124 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1125 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qids[i]);
|
1126 | ff5e54c9 | Anthony Liguori | } |
1127 | ff5e54c9 | Anthony Liguori | } |
1128 | ff5e54c9 | Anthony Liguori | |
1129 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_newfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1130 | ff5e54c9 | Anthony Liguori | int err)
|
1131 | ff5e54c9 | Anthony Liguori | { |
1132 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1133 | ff5e54c9 | Anthony Liguori | free_fid(s, vs->newfidp->fid); |
1134 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1135 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1136 | ff5e54c9 | Anthony Liguori | goto out;
|
1137 | ff5e54c9 | Anthony Liguori | } |
1138 | ff5e54c9 | Anthony Liguori | |
1139 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1140 | ff5e54c9 | Anthony Liguori | |
1141 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1142 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1143 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1144 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1145 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1146 | ff5e54c9 | Anthony Liguori | |
1147 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1148 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1149 | ff5e54c9 | Anthony Liguori | return;
|
1150 | ff5e54c9 | Anthony Liguori | } |
1151 | ff5e54c9 | Anthony Liguori | |
1152 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1153 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1154 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1155 | ff5e54c9 | Anthony Liguori | out:
|
1156 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1157 | ff5e54c9 | Anthony Liguori | } |
1158 | ff5e54c9 | Anthony Liguori | |
1159 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_oldfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1160 | ff5e54c9 | Anthony Liguori | int err)
|
1161 | ff5e54c9 | Anthony Liguori | { |
1162 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1163 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1164 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1165 | ff5e54c9 | Anthony Liguori | goto out;
|
1166 | ff5e54c9 | Anthony Liguori | } |
1167 | ff5e54c9 | Anthony Liguori | |
1168 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1169 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1170 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1171 | ff5e54c9 | Anthony Liguori | |
1172 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1173 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1174 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1175 | ff5e54c9 | Anthony Liguori | |
1176 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1177 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1178 | ff5e54c9 | Anthony Liguori | return;
|
1179 | ff5e54c9 | Anthony Liguori | } |
1180 | ff5e54c9 | Anthony Liguori | |
1181 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1182 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1183 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1184 | ff5e54c9 | Anthony Liguori | out:
|
1185 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1186 | ff5e54c9 | Anthony Liguori | } |
1187 | ff5e54c9 | Anthony Liguori | |
1188 | 9f107513 | Anthony Liguori | static void v9fs_walk(V9fsState *s, V9fsPDU *pdu) |
1189 | 9f107513 | Anthony Liguori | { |
1190 | ff5e54c9 | Anthony Liguori | int32_t fid, newfid; |
1191 | ff5e54c9 | Anthony Liguori | V9fsWalkState *vs; |
1192 | ff5e54c9 | Anthony Liguori | int err = 0; |
1193 | ff5e54c9 | Anthony Liguori | int i;
|
1194 | ff5e54c9 | Anthony Liguori | |
1195 | ff5e54c9 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1196 | ff5e54c9 | Anthony Liguori | vs->pdu = pdu; |
1197 | ff5e54c9 | Anthony Liguori | vs->wnames = NULL;
|
1198 | ff5e54c9 | Anthony Liguori | vs->qids = NULL;
|
1199 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1200 | ff5e54c9 | Anthony Liguori | |
1201 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "ddw", &fid,
|
1202 | ff5e54c9 | Anthony Liguori | &newfid, &vs->nwnames); |
1203 | ff5e54c9 | Anthony Liguori | |
1204 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1205 | ff5e54c9 | Anthony Liguori | vs->wnames = qemu_mallocz(sizeof(vs->wnames[0]) * vs->nwnames); |
1206 | ff5e54c9 | Anthony Liguori | |
1207 | ff5e54c9 | Anthony Liguori | vs->qids = qemu_mallocz(sizeof(vs->qids[0]) * vs->nwnames); |
1208 | ff5e54c9 | Anthony Liguori | |
1209 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1210 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "s",
|
1211 | ff5e54c9 | Anthony Liguori | &vs->wnames[i]); |
1212 | ff5e54c9 | Anthony Liguori | } |
1213 | ff5e54c9 | Anthony Liguori | } |
1214 | ff5e54c9 | Anthony Liguori | |
1215 | ff5e54c9 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1216 | ff5e54c9 | Anthony Liguori | if (vs->fidp == NULL) { |
1217 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1218 | ff5e54c9 | Anthony Liguori | goto out;
|
1219 | ff5e54c9 | Anthony Liguori | } |
1220 | ff5e54c9 | Anthony Liguori | |
1221 | ff5e54c9 | Anthony Liguori | /* FIXME: is this really valid? */
|
1222 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1223 | ff5e54c9 | Anthony Liguori | |
1224 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1225 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1226 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1227 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1228 | ff5e54c9 | Anthony Liguori | |
1229 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1230 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1231 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1232 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1233 | ff5e54c9 | Anthony Liguori | |
1234 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1235 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1236 | ff5e54c9 | Anthony Liguori | return;
|
1237 | ff5e54c9 | Anthony Liguori | } |
1238 | ff5e54c9 | Anthony Liguori | } else {
|
1239 | ff5e54c9 | Anthony Liguori | vs->newfidp = alloc_fid(s, newfid); |
1240 | ff5e54c9 | Anthony Liguori | if (vs->newfidp == NULL) { |
1241 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1242 | ff5e54c9 | Anthony Liguori | goto out;
|
1243 | ff5e54c9 | Anthony Liguori | } |
1244 | ff5e54c9 | Anthony Liguori | |
1245 | ff5e54c9 | Anthony Liguori | vs->newfidp->uid = vs->fidp->uid; |
1246 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1247 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1248 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->fidp->path); |
1249 | ff5e54c9 | Anthony Liguori | |
1250 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1251 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1252 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1253 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1254 | ff5e54c9 | Anthony Liguori | |
1255 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1256 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1257 | ff5e54c9 | Anthony Liguori | return;
|
1258 | ff5e54c9 | Anthony Liguori | } |
1259 | 9f107513 | Anthony Liguori | } |
1260 | ff5e54c9 | Anthony Liguori | |
1261 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1262 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1263 | ff5e54c9 | Anthony Liguori | out:
|
1264 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1265 | 9f107513 | Anthony Liguori | } |
1266 | 9f107513 | Anthony Liguori | |
1267 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_opendir(V9fsState *s, V9fsOpenState *vs, int err) |
1268 | a6568fe2 | Anthony Liguori | { |
1269 | a6568fe2 | Anthony Liguori | if (vs->fidp->dir == NULL) { |
1270 | a6568fe2 | Anthony Liguori | err = -errno; |
1271 | a6568fe2 | Anthony Liguori | goto out;
|
1272 | a6568fe2 | Anthony Liguori | } |
1273 | a6568fe2 | Anthony Liguori | |
1274 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1275 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1276 | a6568fe2 | Anthony Liguori | out:
|
1277 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1278 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1279 | a6568fe2 | Anthony Liguori | |
1280 | a6568fe2 | Anthony Liguori | } |
1281 | a6568fe2 | Anthony Liguori | |
1282 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_open(V9fsState *s, V9fsOpenState *vs, int err) |
1283 | a6568fe2 | Anthony Liguori | { |
1284 | a6568fe2 | Anthony Liguori | if (vs->fidp->fd == -1) { |
1285 | a6568fe2 | Anthony Liguori | err = -errno; |
1286 | a6568fe2 | Anthony Liguori | goto out;
|
1287 | a6568fe2 | Anthony Liguori | } |
1288 | a6568fe2 | Anthony Liguori | |
1289 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1290 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1291 | a6568fe2 | Anthony Liguori | out:
|
1292 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1293 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1294 | a6568fe2 | Anthony Liguori | } |
1295 | a6568fe2 | Anthony Liguori | |
1296 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) |
1297 | a6568fe2 | Anthony Liguori | { |
1298 | a6568fe2 | Anthony Liguori | if (err) {
|
1299 | a6568fe2 | Anthony Liguori | err = -errno; |
1300 | a6568fe2 | Anthony Liguori | goto out;
|
1301 | a6568fe2 | Anthony Liguori | } |
1302 | a6568fe2 | Anthony Liguori | |
1303 | a6568fe2 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1304 | a6568fe2 | Anthony Liguori | |
1305 | a6568fe2 | Anthony Liguori | if (S_ISDIR(vs->stbuf.st_mode)) {
|
1306 | a6568fe2 | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fidp->path); |
1307 | a6568fe2 | Anthony Liguori | v9fs_open_post_opendir(s, vs, err); |
1308 | a6568fe2 | Anthony Liguori | } else {
|
1309 | a6568fe2 | Anthony Liguori | vs->fidp->fd = v9fs_do_open(s, &vs->fidp->path, |
1310 | a6568fe2 | Anthony Liguori | omode_to_uflags(vs->mode)); |
1311 | a6568fe2 | Anthony Liguori | v9fs_open_post_open(s, vs, err); |
1312 | a6568fe2 | Anthony Liguori | } |
1313 | a6568fe2 | Anthony Liguori | return;
|
1314 | a6568fe2 | Anthony Liguori | out:
|
1315 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1316 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1317 | 9f107513 | Anthony Liguori | } |
1318 | 9f107513 | Anthony Liguori | |
1319 | 9f107513 | Anthony Liguori | static void v9fs_open(V9fsState *s, V9fsPDU *pdu) |
1320 | a6568fe2 | Anthony Liguori | { |
1321 | a6568fe2 | Anthony Liguori | int32_t fid; |
1322 | a6568fe2 | Anthony Liguori | V9fsOpenState *vs; |
1323 | a6568fe2 | Anthony Liguori | ssize_t err = 0;
|
1324 | a6568fe2 | Anthony Liguori | |
1325 | a6568fe2 | Anthony Liguori | |
1326 | a6568fe2 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1327 | a6568fe2 | Anthony Liguori | vs->pdu = pdu; |
1328 | a6568fe2 | Anthony Liguori | vs->offset = 7;
|
1329 | a6568fe2 | Anthony Liguori | |
1330 | a6568fe2 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "db", &fid, &vs->mode);
|
1331 | a6568fe2 | Anthony Liguori | |
1332 | a6568fe2 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1333 | a6568fe2 | Anthony Liguori | if (vs->fidp == NULL) { |
1334 | a6568fe2 | Anthony Liguori | err = -ENOENT; |
1335 | a6568fe2 | Anthony Liguori | goto out;
|
1336 | a6568fe2 | Anthony Liguori | } |
1337 | a6568fe2 | Anthony Liguori | |
1338 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1339 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1340 | a6568fe2 | Anthony Liguori | |
1341 | a6568fe2 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1342 | a6568fe2 | Anthony Liguori | |
1343 | a6568fe2 | Anthony Liguori | v9fs_open_post_lstat(s, vs, err); |
1344 | a6568fe2 | Anthony Liguori | return;
|
1345 | a6568fe2 | Anthony Liguori | out:
|
1346 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1347 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1348 | a6568fe2 | Anthony Liguori | } |
1349 | a6568fe2 | Anthony Liguori | |
1350 | a6568fe2 | Anthony Liguori | static void v9fs_clunk(V9fsState *s, V9fsPDU *pdu) |
1351 | a6568fe2 | Anthony Liguori | { |
1352 | bbd5697b | Anthony Liguori | int32_t fid; |
1353 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1354 | bbd5697b | Anthony Liguori | int err;
|
1355 | bbd5697b | Anthony Liguori | |
1356 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1357 | bbd5697b | Anthony Liguori | |
1358 | bbd5697b | Anthony Liguori | err = free_fid(s, fid); |
1359 | bbd5697b | Anthony Liguori | if (err < 0) { |
1360 | bbd5697b | Anthony Liguori | goto out;
|
1361 | a6568fe2 | Anthony Liguori | } |
1362 | bbd5697b | Anthony Liguori | |
1363 | bbd5697b | Anthony Liguori | offset = 7;
|
1364 | bbd5697b | Anthony Liguori | err = offset; |
1365 | bbd5697b | Anthony Liguori | out:
|
1366 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1367 | 9f107513 | Anthony Liguori | } |
1368 | 9f107513 | Anthony Liguori | |
1369 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *, V9fsReadState *, ssize_t); |
1370 | a9231555 | Anthony Liguori | |
1371 | a9231555 | Anthony Liguori | static void v9fs_read_post_seekdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1372 | a9231555 | Anthony Liguori | { |
1373 | a9231555 | Anthony Liguori | if (err) {
|
1374 | a9231555 | Anthony Liguori | goto out;
|
1375 | a9231555 | Anthony Liguori | } |
1376 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1377 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1378 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1379 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1380 | a9231555 | Anthony Liguori | err = vs->offset; |
1381 | a9231555 | Anthony Liguori | out:
|
1382 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1383 | a9231555 | Anthony Liguori | qemu_free(vs); |
1384 | a9231555 | Anthony Liguori | return;
|
1385 | a9231555 | Anthony Liguori | } |
1386 | a9231555 | Anthony Liguori | |
1387 | a9231555 | Anthony Liguori | static void v9fs_read_post_dir_lstat(V9fsState *s, V9fsReadState *vs, |
1388 | a9231555 | Anthony Liguori | ssize_t err) |
1389 | a9231555 | Anthony Liguori | { |
1390 | a9231555 | Anthony Liguori | if (err) {
|
1391 | a9231555 | Anthony Liguori | err = -errno; |
1392 | a9231555 | Anthony Liguori | goto out;
|
1393 | a9231555 | Anthony Liguori | } |
1394 | a9231555 | Anthony Liguori | err = stat_to_v9stat(s, &vs->name, &vs->stbuf, &vs->v9stat); |
1395 | a9231555 | Anthony Liguori | if (err) {
|
1396 | a9231555 | Anthony Liguori | goto out;
|
1397 | a9231555 | Anthony Liguori | } |
1398 | a9231555 | Anthony Liguori | |
1399 | a9231555 | Anthony Liguori | vs->len = pdu_marshal(vs->pdu, vs->offset + 4 + vs->count, "S", |
1400 | a9231555 | Anthony Liguori | &vs->v9stat); |
1401 | a9231555 | Anthony Liguori | if ((vs->len != (vs->v9stat.size + 2)) || |
1402 | a9231555 | Anthony Liguori | ((vs->count + vs->len) > vs->max_count)) { |
1403 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1404 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1405 | a9231555 | Anthony Liguori | return;
|
1406 | a9231555 | Anthony Liguori | } |
1407 | a9231555 | Anthony Liguori | vs->count += vs->len; |
1408 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1409 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1410 | a9231555 | Anthony Liguori | vs->dir_pos = vs->dent->d_off; |
1411 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1412 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1413 | a9231555 | Anthony Liguori | return;
|
1414 | a9231555 | Anthony Liguori | out:
|
1415 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1416 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1417 | a9231555 | Anthony Liguori | return;
|
1418 | a9231555 | Anthony Liguori | |
1419 | a9231555 | Anthony Liguori | } |
1420 | a9231555 | Anthony Liguori | |
1421 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1422 | a9231555 | Anthony Liguori | { |
1423 | a9231555 | Anthony Liguori | if (vs->dent) {
|
1424 | a9231555 | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1425 | a9231555 | Anthony Liguori | v9fs_string_init(&vs->name); |
1426 | a9231555 | Anthony Liguori | v9fs_string_sprintf(&vs->name, "%s/%s", vs->fidp->path.data,
|
1427 | a9231555 | Anthony Liguori | vs->dent->d_name); |
1428 | a9231555 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->name, &vs->stbuf); |
1429 | a9231555 | Anthony Liguori | v9fs_read_post_dir_lstat(s, vs, err); |
1430 | a9231555 | Anthony Liguori | return;
|
1431 | a9231555 | Anthony Liguori | } |
1432 | a9231555 | Anthony Liguori | |
1433 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1434 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1435 | a9231555 | Anthony Liguori | err = vs->offset; |
1436 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1437 | a9231555 | Anthony Liguori | qemu_free(vs); |
1438 | a9231555 | Anthony Liguori | return;
|
1439 | a9231555 | Anthony Liguori | } |
1440 | a9231555 | Anthony Liguori | |
1441 | a9231555 | Anthony Liguori | static void v9fs_read_post_telldir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1442 | a9231555 | Anthony Liguori | { |
1443 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1444 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1445 | a9231555 | Anthony Liguori | return;
|
1446 | a9231555 | Anthony Liguori | } |
1447 | a9231555 | Anthony Liguori | |
1448 | a9231555 | Anthony Liguori | static void v9fs_read_post_rewinddir(V9fsState *s, V9fsReadState *vs, |
1449 | a9231555 | Anthony Liguori | ssize_t err) |
1450 | a9231555 | Anthony Liguori | { |
1451 | a9231555 | Anthony Liguori | vs->dir_pos = v9fs_do_telldir(s, vs->fidp->dir); |
1452 | a9231555 | Anthony Liguori | v9fs_read_post_telldir(s, vs, err); |
1453 | a9231555 | Anthony Liguori | return;
|
1454 | a9231555 | Anthony Liguori | } |
1455 | a9231555 | Anthony Liguori | |
1456 | a9231555 | Anthony Liguori | static void v9fs_read_post_readv(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1457 | a9231555 | Anthony Liguori | { |
1458 | a9231555 | Anthony Liguori | if (err < 0) { |
1459 | a9231555 | Anthony Liguori | /* IO error return the error */
|
1460 | a9231555 | Anthony Liguori | err = -errno; |
1461 | a9231555 | Anthony Liguori | goto out;
|
1462 | a9231555 | Anthony Liguori | } |
1463 | a9231555 | Anthony Liguori | vs->total += vs->len; |
1464 | a9231555 | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1465 | a9231555 | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1466 | a9231555 | Anthony Liguori | do {
|
1467 | a9231555 | Anthony Liguori | if (0) { |
1468 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1469 | a9231555 | Anthony Liguori | } |
1470 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1471 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1472 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1473 | a9231555 | Anthony Liguori | err = -errno; |
1474 | a9231555 | Anthony Liguori | } |
1475 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1476 | a9231555 | Anthony Liguori | return;
|
1477 | a9231555 | Anthony Liguori | } |
1478 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1479 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1480 | a9231555 | Anthony Liguori | err = vs->offset; |
1481 | a9231555 | Anthony Liguori | |
1482 | a9231555 | Anthony Liguori | out:
|
1483 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1484 | a9231555 | Anthony Liguori | qemu_free(vs); |
1485 | a9231555 | Anthony Liguori | } |
1486 | a9231555 | Anthony Liguori | |
1487 | a9231555 | Anthony Liguori | static void v9fs_read_post_lseek(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1488 | a9231555 | Anthony Liguori | { |
1489 | a9231555 | Anthony Liguori | if (err == -1) { |
1490 | a9231555 | Anthony Liguori | err = -errno; |
1491 | a9231555 | Anthony Liguori | goto out;
|
1492 | a9231555 | Anthony Liguori | } |
1493 | a9231555 | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1494 | a9231555 | Anthony Liguori | |
1495 | a9231555 | Anthony Liguori | if (vs->total < vs->count) {
|
1496 | a9231555 | Anthony Liguori | do {
|
1497 | a9231555 | Anthony Liguori | if (0) { |
1498 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1499 | a9231555 | Anthony Liguori | } |
1500 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1501 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1502 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1503 | a9231555 | Anthony Liguori | err = -errno; |
1504 | a9231555 | Anthony Liguori | } |
1505 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1506 | a9231555 | Anthony Liguori | return;
|
1507 | a9231555 | Anthony Liguori | } |
1508 | a9231555 | Anthony Liguori | out:
|
1509 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1510 | a9231555 | Anthony Liguori | qemu_free(vs); |
1511 | a9231555 | Anthony Liguori | } |
1512 | a9231555 | Anthony Liguori | |
1513 | 9f107513 | Anthony Liguori | static void v9fs_read(V9fsState *s, V9fsPDU *pdu) |
1514 | 9f107513 | Anthony Liguori | { |
1515 | a9231555 | Anthony Liguori | int32_t fid; |
1516 | a9231555 | Anthony Liguori | V9fsReadState *vs; |
1517 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
1518 | a9231555 | Anthony Liguori | |
1519 | a9231555 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1520 | a9231555 | Anthony Liguori | vs->pdu = pdu; |
1521 | a9231555 | Anthony Liguori | vs->offset = 7;
|
1522 | a9231555 | Anthony Liguori | vs->total = 0;
|
1523 | a9231555 | Anthony Liguori | vs->len = 0;
|
1524 | a9231555 | Anthony Liguori | vs->count = 0;
|
1525 | a9231555 | Anthony Liguori | |
1526 | a9231555 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqd", &fid, &vs->off, &vs->count);
|
1527 | a9231555 | Anthony Liguori | |
1528 | a9231555 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1529 | a9231555 | Anthony Liguori | if (vs->fidp == NULL) { |
1530 | a9231555 | Anthony Liguori | err = -EINVAL; |
1531 | a9231555 | Anthony Liguori | goto out;
|
1532 | a9231555 | Anthony Liguori | } |
1533 | a9231555 | Anthony Liguori | |
1534 | a9231555 | Anthony Liguori | if (vs->fidp->dir) {
|
1535 | a9231555 | Anthony Liguori | vs->max_count = vs->count; |
1536 | a9231555 | Anthony Liguori | vs->count = 0;
|
1537 | a9231555 | Anthony Liguori | if (vs->off == 0) { |
1538 | a9231555 | Anthony Liguori | v9fs_do_rewinddir(s, vs->fidp->dir); |
1539 | a9231555 | Anthony Liguori | } |
1540 | a9231555 | Anthony Liguori | v9fs_read_post_rewinddir(s, vs, err); |
1541 | a9231555 | Anthony Liguori | return;
|
1542 | a9231555 | Anthony Liguori | } else if (vs->fidp->fd != -1) { |
1543 | a9231555 | Anthony Liguori | vs->sg = vs->iov; |
1544 | a9231555 | Anthony Liguori | pdu_marshal(vs->pdu, vs->offset + 4, "v", vs->sg, &vs->cnt); |
1545 | a9231555 | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
1546 | a9231555 | Anthony Liguori | v9fs_read_post_lseek(s, vs, err); |
1547 | a9231555 | Anthony Liguori | return;
|
1548 | a9231555 | Anthony Liguori | } else {
|
1549 | a9231555 | Anthony Liguori | err = -EINVAL; |
1550 | 9f107513 | Anthony Liguori | } |
1551 | a9231555 | Anthony Liguori | out:
|
1552 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
1553 | a9231555 | Anthony Liguori | qemu_free(vs); |
1554 | 9f107513 | Anthony Liguori | } |
1555 | 9f107513 | Anthony Liguori | |
1556 | 8449360c | Anthony Liguori | static void v9fs_write_post_writev(V9fsState *s, V9fsWriteState *vs, |
1557 | 8449360c | Anthony Liguori | ssize_t err) |
1558 | 8449360c | Anthony Liguori | { |
1559 | 8449360c | Anthony Liguori | if (err < 0) { |
1560 | 8449360c | Anthony Liguori | /* IO error return the error */
|
1561 | 8449360c | Anthony Liguori | err = -errno; |
1562 | 8449360c | Anthony Liguori | goto out;
|
1563 | 8449360c | Anthony Liguori | } |
1564 | 8449360c | Anthony Liguori | vs->total += vs->len; |
1565 | 8449360c | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1566 | 8449360c | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1567 | 8449360c | Anthony Liguori | do {
|
1568 | 8449360c | Anthony Liguori | if (0) { |
1569 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1570 | 8449360c | Anthony Liguori | } |
1571 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
1572 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1573 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
1574 | 8449360c | Anthony Liguori | err = -errno; |
1575 | 8449360c | Anthony Liguori | } |
1576 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
1577 | 8449360c | Anthony Liguori | return;
|
1578 | 8449360c | Anthony Liguori | } |
1579 | 8449360c | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1580 | 8449360c | Anthony Liguori | |
1581 | 8449360c | Anthony Liguori | err = vs->offset; |
1582 | 8449360c | Anthony Liguori | out:
|
1583 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1584 | 8449360c | Anthony Liguori | qemu_free(vs); |
1585 | 8449360c | Anthony Liguori | } |
1586 | 8449360c | Anthony Liguori | |
1587 | 8449360c | Anthony Liguori | static void v9fs_write_post_lseek(V9fsState *s, V9fsWriteState *vs, ssize_t err) |
1588 | 8449360c | Anthony Liguori | { |
1589 | 8449360c | Anthony Liguori | if (err == -1) { |
1590 | 8449360c | Anthony Liguori | err = -errno; |
1591 | 8449360c | Anthony Liguori | goto out;
|
1592 | 8449360c | Anthony Liguori | } |
1593 | 8449360c | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1594 | 8449360c | Anthony Liguori | |
1595 | 8449360c | Anthony Liguori | if (vs->total < vs->count) {
|
1596 | 8449360c | Anthony Liguori | do {
|
1597 | 8449360c | Anthony Liguori | if (0) { |
1598 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1599 | 8449360c | Anthony Liguori | } |
1600 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
1601 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1602 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
1603 | 8449360c | Anthony Liguori | err = -errno; |
1604 | 8449360c | Anthony Liguori | } |
1605 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
1606 | 8449360c | Anthony Liguori | return;
|
1607 | 8449360c | Anthony Liguori | } |
1608 | 8449360c | Anthony Liguori | |
1609 | 8449360c | Anthony Liguori | out:
|
1610 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1611 | 8449360c | Anthony Liguori | qemu_free(vs); |
1612 | 8449360c | Anthony Liguori | } |
1613 | 8449360c | Anthony Liguori | |
1614 | 9f107513 | Anthony Liguori | static void v9fs_write(V9fsState *s, V9fsPDU *pdu) |
1615 | 9f107513 | Anthony Liguori | { |
1616 | 8449360c | Anthony Liguori | int32_t fid; |
1617 | 8449360c | Anthony Liguori | V9fsWriteState *vs; |
1618 | 8449360c | Anthony Liguori | ssize_t err; |
1619 | 8449360c | Anthony Liguori | |
1620 | 8449360c | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1621 | 8449360c | Anthony Liguori | |
1622 | 8449360c | Anthony Liguori | vs->pdu = pdu; |
1623 | 8449360c | Anthony Liguori | vs->offset = 7;
|
1624 | 8449360c | Anthony Liguori | vs->sg = vs->iov; |
1625 | 8449360c | Anthony Liguori | vs->total = 0;
|
1626 | 8449360c | Anthony Liguori | vs->len = 0;
|
1627 | 8449360c | Anthony Liguori | |
1628 | 8449360c | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqdv", &fid, &vs->off, &vs->count,
|
1629 | 8449360c | Anthony Liguori | vs->sg, &vs->cnt); |
1630 | 8449360c | Anthony Liguori | |
1631 | 8449360c | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1632 | 8449360c | Anthony Liguori | if (vs->fidp == NULL) { |
1633 | 8449360c | Anthony Liguori | err = -EINVAL; |
1634 | 8449360c | Anthony Liguori | goto out;
|
1635 | 9f107513 | Anthony Liguori | } |
1636 | 8449360c | Anthony Liguori | |
1637 | 8449360c | Anthony Liguori | if (vs->fidp->fd == -1) { |
1638 | 8449360c | Anthony Liguori | err = -EINVAL; |
1639 | 8449360c | Anthony Liguori | goto out;
|
1640 | 8449360c | Anthony Liguori | } |
1641 | 8449360c | Anthony Liguori | |
1642 | 8449360c | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
1643 | 8449360c | Anthony Liguori | |
1644 | 8449360c | Anthony Liguori | v9fs_write_post_lseek(s, vs, err); |
1645 | 8449360c | Anthony Liguori | return;
|
1646 | 8449360c | Anthony Liguori | |
1647 | 8449360c | Anthony Liguori | out:
|
1648 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1649 | 8449360c | Anthony Liguori | qemu_free(vs); |
1650 | 9f107513 | Anthony Liguori | } |
1651 | 9f107513 | Anthony Liguori | |
1652 | c494dd6f | Anthony Liguori | static void v9fs_post_create(V9fsState *s, V9fsCreateState *vs, int err) |
1653 | c494dd6f | Anthony Liguori | { |
1654 | c494dd6f | Anthony Liguori | if (err == 0) { |
1655 | c494dd6f | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
1656 | c494dd6f | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1657 | c494dd6f | Anthony Liguori | |
1658 | c494dd6f | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1659 | c494dd6f | Anthony Liguori | |
1660 | c494dd6f | Anthony Liguori | err = vs->offset; |
1661 | c494dd6f | Anthony Liguori | } |
1662 | c494dd6f | Anthony Liguori | |
1663 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1664 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
1665 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
1666 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->fullname); |
1667 | c494dd6f | Anthony Liguori | qemu_free(vs); |
1668 | c494dd6f | Anthony Liguori | } |
1669 | c494dd6f | Anthony Liguori | |
1670 | c494dd6f | Anthony Liguori | static void v9fs_create_post_perms(V9fsState *s, V9fsCreateState *vs, int err) |
1671 | c494dd6f | Anthony Liguori | { |
1672 | c494dd6f | Anthony Liguori | if (err) {
|
1673 | c494dd6f | Anthony Liguori | err = -errno; |
1674 | c494dd6f | Anthony Liguori | } |
1675 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1676 | c494dd6f | Anthony Liguori | } |
1677 | c494dd6f | Anthony Liguori | |
1678 | c494dd6f | Anthony Liguori | static void v9fs_create_post_opendir(V9fsState *s, V9fsCreateState *vs, |
1679 | c494dd6f | Anthony Liguori | int err)
|
1680 | c494dd6f | Anthony Liguori | { |
1681 | c494dd6f | Anthony Liguori | if (!vs->fidp->dir) {
|
1682 | c494dd6f | Anthony Liguori | err = -errno; |
1683 | c494dd6f | Anthony Liguori | } |
1684 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1685 | c494dd6f | Anthony Liguori | } |
1686 | c494dd6f | Anthony Liguori | |
1687 | c494dd6f | Anthony Liguori | static void v9fs_create_post_dir_lstat(V9fsState *s, V9fsCreateState *vs, |
1688 | c494dd6f | Anthony Liguori | int err)
|
1689 | c494dd6f | Anthony Liguori | { |
1690 | c494dd6f | Anthony Liguori | if (err) {
|
1691 | c494dd6f | Anthony Liguori | err = -errno; |
1692 | c494dd6f | Anthony Liguori | goto out;
|
1693 | c494dd6f | Anthony Liguori | } |
1694 | c494dd6f | Anthony Liguori | |
1695 | c494dd6f | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fullname); |
1696 | c494dd6f | Anthony Liguori | v9fs_create_post_opendir(s, vs, err); |
1697 | c494dd6f | Anthony Liguori | return;
|
1698 | c494dd6f | Anthony Liguori | |
1699 | c494dd6f | Anthony Liguori | out:
|
1700 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1701 | c494dd6f | Anthony Liguori | } |
1702 | c494dd6f | Anthony Liguori | |
1703 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mkdir(V9fsState *s, V9fsCreateState *vs, int err) |
1704 | c494dd6f | Anthony Liguori | { |
1705 | c494dd6f | Anthony Liguori | if (err) {
|
1706 | c494dd6f | Anthony Liguori | err = -errno; |
1707 | c494dd6f | Anthony Liguori | goto out;
|
1708 | c494dd6f | Anthony Liguori | } |
1709 | c494dd6f | Anthony Liguori | |
1710 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1711 | c494dd6f | Anthony Liguori | v9fs_create_post_dir_lstat(s, vs, err); |
1712 | c494dd6f | Anthony Liguori | return;
|
1713 | c494dd6f | Anthony Liguori | |
1714 | c494dd6f | Anthony Liguori | out:
|
1715 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1716 | c494dd6f | Anthony Liguori | } |
1717 | c494dd6f | Anthony Liguori | |
1718 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mksock(V9fsState *s, V9fsCreateState *vs, |
1719 | c494dd6f | Anthony Liguori | int err)
|
1720 | c494dd6f | Anthony Liguori | { |
1721 | c494dd6f | Anthony Liguori | if (err) {
|
1722 | c494dd6f | Anthony Liguori | err = -errno; |
1723 | c494dd6f | Anthony Liguori | goto out;
|
1724 | c494dd6f | Anthony Liguori | } |
1725 | c494dd6f | Anthony Liguori | |
1726 | c494dd6f | Anthony Liguori | err = v9fs_do_chmod(s, &vs->fullname, vs->perm & 0777);
|
1727 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1728 | c494dd6f | Anthony Liguori | return;
|
1729 | c494dd6f | Anthony Liguori | |
1730 | c494dd6f | Anthony Liguori | out:
|
1731 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1732 | c494dd6f | Anthony Liguori | } |
1733 | c494dd6f | Anthony Liguori | |
1734 | c494dd6f | Anthony Liguori | static void v9fs_create_post_fstat(V9fsState *s, V9fsCreateState *vs, int err) |
1735 | c494dd6f | Anthony Liguori | { |
1736 | c494dd6f | Anthony Liguori | if (err) {
|
1737 | c494dd6f | Anthony Liguori | vs->fidp->fd = -1;
|
1738 | c494dd6f | Anthony Liguori | err = -errno; |
1739 | c494dd6f | Anthony Liguori | } |
1740 | c494dd6f | Anthony Liguori | |
1741 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1742 | c494dd6f | Anthony Liguori | return;
|
1743 | c494dd6f | Anthony Liguori | } |
1744 | c494dd6f | Anthony Liguori | |
1745 | c494dd6f | Anthony Liguori | static void v9fs_create_post_open2(V9fsState *s, V9fsCreateState *vs, int err) |
1746 | c494dd6f | Anthony Liguori | { |
1747 | c494dd6f | Anthony Liguori | if (vs->fidp->fd == -1) { |
1748 | c494dd6f | Anthony Liguori | err = -errno; |
1749 | c494dd6f | Anthony Liguori | goto out;
|
1750 | c494dd6f | Anthony Liguori | } |
1751 | c494dd6f | Anthony Liguori | |
1752 | c494dd6f | Anthony Liguori | err = v9fs_do_fstat(s, vs->fidp->fd, &vs->stbuf); |
1753 | c494dd6f | Anthony Liguori | v9fs_create_post_fstat(s, vs, err); |
1754 | c494dd6f | Anthony Liguori | |
1755 | c494dd6f | Anthony Liguori | return;
|
1756 | c494dd6f | Anthony Liguori | |
1757 | c494dd6f | Anthony Liguori | out:
|
1758 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1759 | c494dd6f | Anthony Liguori | |
1760 | c494dd6f | Anthony Liguori | } |
1761 | c494dd6f | Anthony Liguori | |
1762 | c494dd6f | Anthony Liguori | static void v9fs_create_post_lstat(V9fsState *s, V9fsCreateState *vs, int err) |
1763 | c494dd6f | Anthony Liguori | { |
1764 | c494dd6f | Anthony Liguori | |
1765 | c494dd6f | Anthony Liguori | if (err == 0 || errno != ENOENT) { |
1766 | c494dd6f | Anthony Liguori | err = -errno; |
1767 | c494dd6f | Anthony Liguori | goto out;
|
1768 | c494dd6f | Anthony Liguori | } |
1769 | c494dd6f | Anthony Liguori | |
1770 | c494dd6f | Anthony Liguori | if (vs->perm & P9_STAT_MODE_DIR) {
|
1771 | c494dd6f | Anthony Liguori | err = v9fs_do_mkdir(s, &vs->fullname, vs->perm & 0777);
|
1772 | c494dd6f | Anthony Liguori | v9fs_create_post_mkdir(s, vs, err); |
1773 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SYMLINK) { |
1774 | c494dd6f | Anthony Liguori | err = v9fs_do_symlink(s, &vs->extension, &vs->fullname); |
1775 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1776 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_LINK) { |
1777 | c494dd6f | Anthony Liguori | int32_t nfid = atoi(vs->extension.data); |
1778 | c494dd6f | Anthony Liguori | V9fsFidState *nfidp = lookup_fid(s, nfid); |
1779 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
1780 | c494dd6f | Anthony Liguori | err = -errno; |
1781 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1782 | c494dd6f | Anthony Liguori | } |
1783 | c494dd6f | Anthony Liguori | err = v9fs_do_link(s, &nfidp->path, &vs->fullname); |
1784 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1785 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_DEVICE) { |
1786 | c494dd6f | Anthony Liguori | char ctype;
|
1787 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
1788 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
1789 | c494dd6f | Anthony Liguori | |
1790 | c494dd6f | Anthony Liguori | if (sscanf(vs->extension.data, "%c %u %u", &ctype, &major, |
1791 | c494dd6f | Anthony Liguori | &minor) != 3) {
|
1792 | c494dd6f | Anthony Liguori | err = -errno; |
1793 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1794 | c494dd6f | Anthony Liguori | } |
1795 | c494dd6f | Anthony Liguori | |
1796 | c494dd6f | Anthony Liguori | switch (ctype) {
|
1797 | c494dd6f | Anthony Liguori | case 'c': |
1798 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
1799 | c494dd6f | Anthony Liguori | break;
|
1800 | c494dd6f | Anthony Liguori | case 'b': |
1801 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
1802 | c494dd6f | Anthony Liguori | break;
|
1803 | c494dd6f | Anthony Liguori | default:
|
1804 | c494dd6f | Anthony Liguori | err = -EIO; |
1805 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1806 | c494dd6f | Anthony Liguori | } |
1807 | c494dd6f | Anthony Liguori | |
1808 | c494dd6f | Anthony Liguori | nmode |= vs->perm & 0777;
|
1809 | c494dd6f | Anthony Liguori | err = v9fs_do_mknod(s, &vs->fullname, nmode, makedev(major, minor)); |
1810 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1811 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_NAMED_PIPE) { |
1812 | c494dd6f | Anthony Liguori | err = v9fs_do_mknod(s, &vs->fullname, S_IFIFO | (vs->mode & 0777), 0); |
1813 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1814 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SOCKET) { |
1815 | c494dd6f | Anthony Liguori | err = v9fs_do_mksock(s, &vs->fullname); |
1816 | c494dd6f | Anthony Liguori | v9fs_create_post_mksock(s, vs, err); |
1817 | c494dd6f | Anthony Liguori | } else {
|
1818 | c494dd6f | Anthony Liguori | vs->fidp->fd = v9fs_do_open2(s, &vs->fullname, |
1819 | c494dd6f | Anthony Liguori | omode_to_uflags(vs->mode) | O_CREAT, |
1820 | c494dd6f | Anthony Liguori | vs->perm & 0777);
|
1821 | c494dd6f | Anthony Liguori | v9fs_create_post_open2(s, vs, err); |
1822 | c494dd6f | Anthony Liguori | } |
1823 | c494dd6f | Anthony Liguori | |
1824 | c494dd6f | Anthony Liguori | return;
|
1825 | c494dd6f | Anthony Liguori | |
1826 | c494dd6f | Anthony Liguori | out:
|
1827 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1828 | c494dd6f | Anthony Liguori | } |
1829 | c494dd6f | Anthony Liguori | |
1830 | 9f107513 | Anthony Liguori | static void v9fs_create(V9fsState *s, V9fsPDU *pdu) |
1831 | 9f107513 | Anthony Liguori | { |
1832 | c494dd6f | Anthony Liguori | int32_t fid; |
1833 | c494dd6f | Anthony Liguori | V9fsCreateState *vs; |
1834 | c494dd6f | Anthony Liguori | int err = 0; |
1835 | c494dd6f | Anthony Liguori | |
1836 | c494dd6f | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1837 | c494dd6f | Anthony Liguori | vs->pdu = pdu; |
1838 | c494dd6f | Anthony Liguori | vs->offset = 7;
|
1839 | c494dd6f | Anthony Liguori | |
1840 | c494dd6f | Anthony Liguori | v9fs_string_init(&vs->fullname); |
1841 | c494dd6f | Anthony Liguori | |
1842 | c494dd6f | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dsdbs", &fid, &vs->name,
|
1843 | c494dd6f | Anthony Liguori | &vs->perm, &vs->mode, &vs->extension); |
1844 | c494dd6f | Anthony Liguori | |
1845 | c494dd6f | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1846 | c494dd6f | Anthony Liguori | if (vs->fidp == NULL) { |
1847 | c494dd6f | Anthony Liguori | err = -EINVAL; |
1848 | c494dd6f | Anthony Liguori | goto out;
|
1849 | 9f107513 | Anthony Liguori | } |
1850 | c494dd6f | Anthony Liguori | |
1851 | c494dd6f | Anthony Liguori | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
1852 | c494dd6f | Anthony Liguori | vs->name.data); |
1853 | c494dd6f | Anthony Liguori | |
1854 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1855 | c494dd6f | Anthony Liguori | v9fs_create_post_lstat(s, vs, err); |
1856 | c494dd6f | Anthony Liguori | return;
|
1857 | c494dd6f | Anthony Liguori | |
1858 | c494dd6f | Anthony Liguori | out:
|
1859 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1860 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
1861 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
1862 | c494dd6f | Anthony Liguori | qemu_free(vs); |
1863 | 9f107513 | Anthony Liguori | } |
1864 | 9f107513 | Anthony Liguori | |
1865 | 9f107513 | Anthony Liguori | static void v9fs_flush(V9fsState *s, V9fsPDU *pdu) |
1866 | 9f107513 | Anthony Liguori | { |
1867 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
1868 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
1869 | 9f107513 | Anthony Liguori | } |
1870 | 9f107513 | Anthony Liguori | |
1871 | 5bae1900 | Anthony Liguori | static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs, |
1872 | 5bae1900 | Anthony Liguori | int err)
|
1873 | 5bae1900 | Anthony Liguori | { |
1874 | 5bae1900 | Anthony Liguori | /* For TREMOVE we need to clunk the fid even on failed remove */
|
1875 | 5bae1900 | Anthony Liguori | err = free_fid(s, vs->fidp->fid); |
1876 | 5bae1900 | Anthony Liguori | if (err < 0) { |
1877 | 5bae1900 | Anthony Liguori | goto out;
|
1878 | 5bae1900 | Anthony Liguori | } |
1879 | 5bae1900 | Anthony Liguori | |
1880 | 5bae1900 | Anthony Liguori | err = vs->offset; |
1881 | 5bae1900 | Anthony Liguori | out:
|
1882 | 5bae1900 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1883 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
1884 | 5bae1900 | Anthony Liguori | } |
1885 | 5bae1900 | Anthony Liguori | |
1886 | 9f107513 | Anthony Liguori | static void v9fs_remove(V9fsState *s, V9fsPDU *pdu) |
1887 | 9f107513 | Anthony Liguori | { |
1888 | 5bae1900 | Anthony Liguori | int32_t fid; |
1889 | 5bae1900 | Anthony Liguori | V9fsRemoveState *vs; |
1890 | 5bae1900 | Anthony Liguori | int err = 0; |
1891 | 5bae1900 | Anthony Liguori | |
1892 | 5bae1900 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1893 | 5bae1900 | Anthony Liguori | vs->pdu = pdu; |
1894 | 5bae1900 | Anthony Liguori | vs->offset = 7;
|
1895 | 5bae1900 | Anthony Liguori | |
1896 | 5bae1900 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1897 | 5bae1900 | Anthony Liguori | |
1898 | 5bae1900 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1899 | 5bae1900 | Anthony Liguori | if (vs->fidp == NULL) { |
1900 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
1901 | 5bae1900 | Anthony Liguori | goto out;
|
1902 | 9f107513 | Anthony Liguori | } |
1903 | 5bae1900 | Anthony Liguori | |
1904 | 5bae1900 | Anthony Liguori | err = v9fs_do_remove(s, &vs->fidp->path); |
1905 | 5bae1900 | Anthony Liguori | v9fs_remove_post_remove(s, vs, err); |
1906 | 5bae1900 | Anthony Liguori | return;
|
1907 | 5bae1900 | Anthony Liguori | |
1908 | 5bae1900 | Anthony Liguori | out:
|
1909 | 5bae1900 | Anthony Liguori | complete_pdu(s, pdu, err); |
1910 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
1911 | 9f107513 | Anthony Liguori | } |
1912 | 9f107513 | Anthony Liguori | |
1913 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err) |
1914 | 8cf89e00 | Anthony Liguori | { |
1915 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
1916 | 8cf89e00 | Anthony Liguori | goto out;
|
1917 | 8cf89e00 | Anthony Liguori | } |
1918 | 8cf89e00 | Anthony Liguori | |
1919 | 8cf89e00 | Anthony Liguori | err = vs->offset; |
1920 | 8cf89e00 | Anthony Liguori | |
1921 | 8cf89e00 | Anthony Liguori | out:
|
1922 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1923 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1924 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
1925 | 8cf89e00 | Anthony Liguori | } |
1926 | 8cf89e00 | Anthony Liguori | |
1927 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err) |
1928 | 8cf89e00 | Anthony Liguori | { |
1929 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
1930 | 8cf89e00 | Anthony Liguori | goto out;
|
1931 | 8cf89e00 | Anthony Liguori | } |
1932 | 8cf89e00 | Anthony Liguori | |
1933 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
1934 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&vs->nname); |
1935 | 8cf89e00 | Anthony Liguori | } |
1936 | 8cf89e00 | Anthony Liguori | |
1937 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.length != -1) { |
1938 | 8cf89e00 | Anthony Liguori | if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) { |
1939 | 8cf89e00 | Anthony Liguori | err = -errno; |
1940 | 8cf89e00 | Anthony Liguori | } |
1941 | 8cf89e00 | Anthony Liguori | } |
1942 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_truncate(s, vs, err); |
1943 | 8cf89e00 | Anthony Liguori | return;
|
1944 | 8cf89e00 | Anthony Liguori | |
1945 | 8cf89e00 | Anthony Liguori | out:
|
1946 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1947 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1948 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
1949 | 8cf89e00 | Anthony Liguori | } |
1950 | 8cf89e00 | Anthony Liguori | |
1951 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err) |
1952 | 8cf89e00 | Anthony Liguori | { |
1953 | 8cf89e00 | Anthony Liguori | V9fsFidState *fidp; |
1954 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
1955 | 8cf89e00 | Anthony Liguori | goto out;
|
1956 | 8cf89e00 | Anthony Liguori | } |
1957 | 8cf89e00 | Anthony Liguori | |
1958 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
1959 | 8cf89e00 | Anthony Liguori | char *old_name, *new_name;
|
1960 | 8cf89e00 | Anthony Liguori | char *end;
|
1961 | 8cf89e00 | Anthony Liguori | |
1962 | 8cf89e00 | Anthony Liguori | old_name = vs->fidp->path.data; |
1963 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
1964 | 8cf89e00 | Anthony Liguori | if (end) {
|
1965 | 8cf89e00 | Anthony Liguori | end++; |
1966 | 8cf89e00 | Anthony Liguori | } else {
|
1967 | 8cf89e00 | Anthony Liguori | end = old_name; |
1968 | 8cf89e00 | Anthony Liguori | } |
1969 | 8cf89e00 | Anthony Liguori | |
1970 | 8cf89e00 | Anthony Liguori | new_name = qemu_malloc(end - old_name + vs->v9stat.name.size + 1);
|
1971 | 8cf89e00 | Anthony Liguori | |
1972 | 8cf89e00 | Anthony Liguori | memset(new_name, 0, end - old_name + vs->v9stat.name.size + 1); |
1973 | 8cf89e00 | Anthony Liguori | memcpy(new_name, old_name, end - old_name); |
1974 | 8cf89e00 | Anthony Liguori | memcpy(new_name + (end - old_name), vs->v9stat.name.data, |
1975 | 8cf89e00 | Anthony Liguori | vs->v9stat.name.size); |
1976 | 8cf89e00 | Anthony Liguori | vs->nname.data = new_name; |
1977 | 8cf89e00 | Anthony Liguori | vs->nname.size = strlen(new_name); |
1978 | 8cf89e00 | Anthony Liguori | |
1979 | 8cf89e00 | Anthony Liguori | if (strcmp(new_name, vs->fidp->path.data) != 0) { |
1980 | 8cf89e00 | Anthony Liguori | if (v9fs_do_rename(s, &vs->fidp->path, &vs->nname)) {
|
1981 | 8cf89e00 | Anthony Liguori | err = -errno; |
1982 | 8cf89e00 | Anthony Liguori | } else {
|
1983 | 8cf89e00 | Anthony Liguori | /*
|
1984 | 8cf89e00 | Anthony Liguori | * Fixup fid's pointing to the old name to
|
1985 | 8cf89e00 | Anthony Liguori | * start pointing to the new name
|
1986 | 8cf89e00 | Anthony Liguori | */
|
1987 | 8cf89e00 | Anthony Liguori | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
1988 | 8cf89e00 | Anthony Liguori | |
1989 | 8cf89e00 | Anthony Liguori | if (vs->fidp == fidp) {
|
1990 | 8cf89e00 | Anthony Liguori | /*
|
1991 | 8cf89e00 | Anthony Liguori | * we replace name of this fid towards the end
|
1992 | 8cf89e00 | Anthony Liguori | * so that our below strcmp will work
|
1993 | 8cf89e00 | Anthony Liguori | */
|
1994 | 8cf89e00 | Anthony Liguori | continue;
|
1995 | 8cf89e00 | Anthony Liguori | } |
1996 | 8cf89e00 | Anthony Liguori | if (!strncmp(vs->fidp->path.data, fidp->path.data,
|
1997 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data))) { |
1998 | 8cf89e00 | Anthony Liguori | /* replace the name */
|
1999 | 8cf89e00 | Anthony Liguori | v9fs_fix_path(&fidp->path, &vs->nname, |
2000 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data)); |
2001 | 8cf89e00 | Anthony Liguori | } |
2002 | 8cf89e00 | Anthony Liguori | } |
2003 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->nname); |
2004 | 8cf89e00 | Anthony Liguori | } |
2005 | 8cf89e00 | Anthony Liguori | } |
2006 | 8cf89e00 | Anthony Liguori | } |
2007 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_rename(s, vs, err); |
2008 | 8cf89e00 | Anthony Liguori | return;
|
2009 | 8cf89e00 | Anthony Liguori | |
2010 | 8cf89e00 | Anthony Liguori | out:
|
2011 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2012 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2013 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2014 | 8cf89e00 | Anthony Liguori | } |
2015 | 8cf89e00 | Anthony Liguori | |
2016 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err) |
2017 | 8cf89e00 | Anthony Liguori | { |
2018 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2019 | 8cf89e00 | Anthony Liguori | goto out;
|
2020 | 8cf89e00 | Anthony Liguori | } |
2021 | 8cf89e00 | Anthony Liguori | |
2022 | f7613bee | Venkateswararao Jujjuri (JV) | if (vs->v9stat.n_gid != -1 || vs->v9stat.n_uid != -1) { |
2023 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chown(s, &vs->fidp->path, vs->v9stat.n_uid,
|
2024 | 8cf89e00 | Anthony Liguori | vs->v9stat.n_gid)) { |
2025 | 8cf89e00 | Anthony Liguori | err = -errno; |
2026 | 8cf89e00 | Anthony Liguori | } |
2027 | 8cf89e00 | Anthony Liguori | } |
2028 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chown(s, vs, err); |
2029 | 8cf89e00 | Anthony Liguori | return;
|
2030 | 8cf89e00 | Anthony Liguori | |
2031 | 8cf89e00 | Anthony Liguori | out:
|
2032 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2033 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2034 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2035 | 8cf89e00 | Anthony Liguori | } |
2036 | 8cf89e00 | Anthony Liguori | |
2037 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chmod(V9fsState *s, V9fsWstatState *vs, int err) |
2038 | 8cf89e00 | Anthony Liguori | { |
2039 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2040 | 8cf89e00 | Anthony Liguori | goto out;
|
2041 | 8cf89e00 | Anthony Liguori | } |
2042 | 8cf89e00 | Anthony Liguori | |
2043 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mtime != -1) { |
2044 | 8cf89e00 | Anthony Liguori | struct utimbuf tb;
|
2045 | 8cf89e00 | Anthony Liguori | tb.actime = 0;
|
2046 | 8cf89e00 | Anthony Liguori | tb.modtime = vs->v9stat.mtime; |
2047 | 8cf89e00 | Anthony Liguori | if (v9fs_do_utime(s, &vs->fidp->path, &tb)) {
|
2048 | 8cf89e00 | Anthony Liguori | err = -errno; |
2049 | 8cf89e00 | Anthony Liguori | } |
2050 | 8cf89e00 | Anthony Liguori | } |
2051 | 8cf89e00 | Anthony Liguori | |
2052 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_utime(s, vs, err); |
2053 | 8cf89e00 | Anthony Liguori | return;
|
2054 | 8cf89e00 | Anthony Liguori | |
2055 | 8cf89e00 | Anthony Liguori | out:
|
2056 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2057 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2058 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2059 | 8cf89e00 | Anthony Liguori | } |
2060 | 8cf89e00 | Anthony Liguori | |
2061 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_fsync(V9fsState *s, V9fsWstatState *vs, int err) |
2062 | 8cf89e00 | Anthony Liguori | { |
2063 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2064 | 8cf89e00 | Anthony Liguori | err = -errno; |
2065 | 8cf89e00 | Anthony Liguori | } |
2066 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2067 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2068 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2069 | 8cf89e00 | Anthony Liguori | } |
2070 | 8cf89e00 | Anthony Liguori | |
2071 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_lstat(V9fsState *s, V9fsWstatState *vs, int err) |
2072 | 8cf89e00 | Anthony Liguori | { |
2073 | 8cf89e00 | Anthony Liguori | uint32_t v9_mode; |
2074 | 8cf89e00 | Anthony Liguori | |
2075 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2076 | 8cf89e00 | Anthony Liguori | err = -errno; |
2077 | 8cf89e00 | Anthony Liguori | goto out;
|
2078 | 8cf89e00 | Anthony Liguori | } |
2079 | 8cf89e00 | Anthony Liguori | |
2080 | 8cf89e00 | Anthony Liguori | v9_mode = stat_to_v9mode(&vs->stbuf); |
2081 | 8cf89e00 | Anthony Liguori | |
2082 | 8cf89e00 | Anthony Liguori | if ((vs->v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2083 | 8cf89e00 | Anthony Liguori | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2084 | 8cf89e00 | Anthony Liguori | /* Attempting to change the type */
|
2085 | 8cf89e00 | Anthony Liguori | err = -EIO; |
2086 | 8cf89e00 | Anthony Liguori | goto out;
|
2087 | 8cf89e00 | Anthony Liguori | } |
2088 | 8cf89e00 | Anthony Liguori | |
2089 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chmod(s, &vs->fidp->path, v9mode_to_mode(vs->v9stat.mode,
|
2090 | 8cf89e00 | Anthony Liguori | &vs->v9stat.extension))) { |
2091 | 8cf89e00 | Anthony Liguori | err = -errno; |
2092 | 8cf89e00 | Anthony Liguori | } |
2093 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2094 | 8cf89e00 | Anthony Liguori | return;
|
2095 | 8cf89e00 | Anthony Liguori | |
2096 | 8cf89e00 | Anthony Liguori | out:
|
2097 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2098 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2099 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2100 | 8cf89e00 | Anthony Liguori | } |
2101 | 8cf89e00 | Anthony Liguori | |
2102 | 9f107513 | Anthony Liguori | static void v9fs_wstat(V9fsState *s, V9fsPDU *pdu) |
2103 | 9f107513 | Anthony Liguori | { |
2104 | 8cf89e00 | Anthony Liguori | int32_t fid; |
2105 | 8cf89e00 | Anthony Liguori | V9fsWstatState *vs; |
2106 | 8cf89e00 | Anthony Liguori | int err = 0; |
2107 | 8cf89e00 | Anthony Liguori | |
2108 | 8cf89e00 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2109 | 8cf89e00 | Anthony Liguori | vs->pdu = pdu; |
2110 | 8cf89e00 | Anthony Liguori | vs->offset = 7;
|
2111 | 8cf89e00 | Anthony Liguori | |
2112 | 8cf89e00 | Anthony Liguori | pdu_unmarshal(pdu, vs->offset, "dwS", &fid, &vs->unused, &vs->v9stat);
|
2113 | 8cf89e00 | Anthony Liguori | |
2114 | 8cf89e00 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2115 | 8cf89e00 | Anthony Liguori | if (vs->fidp == NULL) { |
2116 | 8cf89e00 | Anthony Liguori | err = -EINVAL; |
2117 | 8cf89e00 | Anthony Liguori | goto out;
|
2118 | 9f107513 | Anthony Liguori | } |
2119 | 8cf89e00 | Anthony Liguori | |
2120 | 8cf89e00 | Anthony Liguori | /* do we need to sync the file? */
|
2121 | 8cf89e00 | Anthony Liguori | if (donttouch_stat(&vs->v9stat)) {
|
2122 | 8cf89e00 | Anthony Liguori | err = v9fs_do_fsync(s, vs->fidp->fd); |
2123 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_fsync(s, vs, err); |
2124 | 8cf89e00 | Anthony Liguori | return;
|
2125 | 8cf89e00 | Anthony Liguori | } |
2126 | 8cf89e00 | Anthony Liguori | |
2127 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mode != -1) { |
2128 | 8cf89e00 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
2129 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_lstat(s, vs, err); |
2130 | 8cf89e00 | Anthony Liguori | return;
|
2131 | 8cf89e00 | Anthony Liguori | } |
2132 | 8cf89e00 | Anthony Liguori | |
2133 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2134 | 8cf89e00 | Anthony Liguori | return;
|
2135 | 8cf89e00 | Anthony Liguori | |
2136 | 8cf89e00 | Anthony Liguori | out:
|
2137 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2138 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2139 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2140 | 9f107513 | Anthony Liguori | } |
2141 | 9f107513 | Anthony Liguori | |
2142 | 9f107513 | Anthony Liguori | typedef void (pdu_handler_t)(V9fsState *s, V9fsPDU *pdu); |
2143 | 9f107513 | Anthony Liguori | |
2144 | 9f107513 | Anthony Liguori | static pdu_handler_t *pdu_handlers[] = {
|
2145 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
2146 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
2147 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
2148 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
2149 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
2150 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
2151 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
2152 | 9f107513 | Anthony Liguori | #if 0
|
2153 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
2154 | 9f107513 | Anthony Liguori | #endif
|
2155 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
2156 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
2157 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
2158 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
2159 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
2160 | 9f107513 | Anthony Liguori | }; |
2161 | 9f107513 | Anthony Liguori | |
2162 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
2163 | 9f107513 | Anthony Liguori | { |
2164 | 9f107513 | Anthony Liguori | pdu_handler_t *handler; |
2165 | 9f107513 | Anthony Liguori | |
2166 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
2167 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
2168 | 9f107513 | Anthony Liguori | } |
2169 | 9f107513 | Anthony Liguori | |
2170 | 9f107513 | Anthony Liguori | BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); |
2171 | 9f107513 | Anthony Liguori | |
2172 | 9f107513 | Anthony Liguori | handler = pdu_handlers[pdu->id]; |
2173 | 9f107513 | Anthony Liguori | BUG_ON(handler == NULL);
|
2174 | 9f107513 | Anthony Liguori | |
2175 | 9f107513 | Anthony Liguori | handler(s, pdu); |
2176 | 9f107513 | Anthony Liguori | } |
2177 | 9f107513 | Anthony Liguori | |
2178 | 9f107513 | Anthony Liguori | static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) |
2179 | 9f107513 | Anthony Liguori | { |
2180 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
2181 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
2182 | 9f107513 | Anthony Liguori | ssize_t len; |
2183 | 9f107513 | Anthony Liguori | |
2184 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
2185 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
2186 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
2187 | 9f107513 | Anthony Liguori | |
2188 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
2189 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
2190 | 9f107513 | Anthony Liguori | |
2191 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
2192 | 9f107513 | Anthony Liguori | |
2193 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
2194 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
2195 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
2196 | 9f107513 | Anthony Liguori | |
2197 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
2198 | 9f107513 | Anthony Liguori | } |
2199 | 9f107513 | Anthony Liguori | |
2200 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
2201 | 9f107513 | Anthony Liguori | } |
2202 | 9f107513 | Anthony Liguori | |
2203 | 9f107513 | Anthony Liguori | static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
|
2204 | 9f107513 | Anthony Liguori | { |
2205 | 9f107513 | Anthony Liguori | features |= 1 << VIRTIO_9P_MOUNT_TAG;
|
2206 | 9f107513 | Anthony Liguori | return features;
|
2207 | 9f107513 | Anthony Liguori | } |
2208 | 9f107513 | Anthony Liguori | |
2209 | 9f107513 | Anthony Liguori | static V9fsState *to_virtio_9p(VirtIODevice *vdev)
|
2210 | 9f107513 | Anthony Liguori | { |
2211 | 9f107513 | Anthony Liguori | return (V9fsState *)vdev;
|
2212 | 9f107513 | Anthony Liguori | } |
2213 | 9f107513 | Anthony Liguori | |
2214 | 9f107513 | Anthony Liguori | static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) |
2215 | 9f107513 | Anthony Liguori | { |
2216 | 9f107513 | Anthony Liguori | struct virtio_9p_config *cfg;
|
2217 | 9f107513 | Anthony Liguori | V9fsState *s = to_virtio_9p(vdev); |
2218 | 9f107513 | Anthony Liguori | |
2219 | 9f107513 | Anthony Liguori | cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + |
2220 | 9f107513 | Anthony Liguori | s->tag_len); |
2221 | 9f107513 | Anthony Liguori | stw_raw(&cfg->tag_len, s->tag_len); |
2222 | 9f107513 | Anthony Liguori | memcpy(cfg->tag, s->tag, s->tag_len); |
2223 | 9f107513 | Anthony Liguori | memcpy(config, cfg, s->config_size); |
2224 | 9f107513 | Anthony Liguori | qemu_free(cfg); |
2225 | 9f107513 | Anthony Liguori | } |
2226 | 9f107513 | Anthony Liguori | |
2227 | 9f107513 | Anthony Liguori | VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) |
2228 | 9f107513 | Anthony Liguori | { |
2229 | 9f107513 | Anthony Liguori | V9fsState *s; |
2230 | 9f107513 | Anthony Liguori | int i, len;
|
2231 | 9f107513 | Anthony Liguori | struct stat stat;
|
2232 | 9f107513 | Anthony Liguori | FsTypeEntry *fse; |
2233 | 9f107513 | Anthony Liguori | |
2234 | 9f107513 | Anthony Liguori | |
2235 | 9f107513 | Anthony Liguori | s = (V9fsState *)virtio_common_init("virtio-9p",
|
2236 | 9f107513 | Anthony Liguori | VIRTIO_ID_9P, |
2237 | 9f107513 | Anthony Liguori | sizeof(struct virtio_9p_config)+ |
2238 | 9f107513 | Anthony Liguori | MAX_TAG_LEN, |
2239 | 9f107513 | Anthony Liguori | sizeof(V9fsState));
|
2240 | 9f107513 | Anthony Liguori | |
2241 | 9f107513 | Anthony Liguori | /* initialize pdu allocator */
|
2242 | 9f107513 | Anthony Liguori | QLIST_INIT(&s->free_list); |
2243 | 9f107513 | Anthony Liguori | for (i = 0; i < (MAX_REQ - 1); i++) { |
2244 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); |
2245 | 9f107513 | Anthony Liguori | } |
2246 | 9f107513 | Anthony Liguori | |
2247 | 9f107513 | Anthony Liguori | s->vq = virtio_add_queue(&s->vdev, MAX_REQ, handle_9p_output); |
2248 | 9f107513 | Anthony Liguori | |
2249 | 9f107513 | Anthony Liguori | fse = get_fsdev_fsentry(conf->fsdev_id); |
2250 | 9f107513 | Anthony Liguori | |
2251 | 9f107513 | Anthony Liguori | if (!fse) {
|
2252 | 9f107513 | Anthony Liguori | /* We don't have a fsdev identified by fsdev_id */
|
2253 | 9f107513 | Anthony Liguori | fprintf(stderr, "Virtio-9p device couldn't find fsdev "
|
2254 | 9f107513 | Anthony Liguori | "with the id %s\n", conf->fsdev_id);
|
2255 | 9f107513 | Anthony Liguori | exit(1);
|
2256 | 9f107513 | Anthony Liguori | } |
2257 | 9f107513 | Anthony Liguori | |
2258 | 9f107513 | Anthony Liguori | if (!fse->path || !conf->tag) {
|
2259 | 9f107513 | Anthony Liguori | /* we haven't specified a mount_tag or the path */
|
2260 | 9f107513 | Anthony Liguori | fprintf(stderr, "fsdev with id %s needs path "
|
2261 | 9f107513 | Anthony Liguori | "and Virtio-9p device needs mount_tag arguments\n",
|
2262 | 9f107513 | Anthony Liguori | conf->fsdev_id); |
2263 | 9f107513 | Anthony Liguori | exit(1);
|
2264 | 9f107513 | Anthony Liguori | } |
2265 | 9f107513 | Anthony Liguori | |
2266 | 758e8e38 | Venkateswararao Jujjuri (JV) | if (!strcmp(fse->security_model, "passthrough")) { |
2267 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the Fileserver set to client user credentials */
|
2268 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_PASSTHROUGH; |
2269 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else if (!strcmp(fse->security_model, "mapped")) { |
2270 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the fileserver are set to QEMU credentials.
|
2271 | 758e8e38 | Venkateswararao Jujjuri (JV) | * Client user credentials are saved in extended attributes.
|
2272 | 758e8e38 | Venkateswararao Jujjuri (JV) | */
|
2273 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_MAPPED; |
2274 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else {
|
2275 | 9ce56db6 | Venkateswararao Jujjuri (JV) | /* user haven't specified a correct security option */
|
2276 | 9ce56db6 | Venkateswararao Jujjuri (JV) | fprintf(stderr, "one of the following must be specified as the"
|
2277 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security option:\n\t security_model=passthrough \n\t "
|
2278 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security_model=mapped\n");
|
2279 | 9ce56db6 | Venkateswararao Jujjuri (JV) | return NULL; |
2280 | 9ce56db6 | Venkateswararao Jujjuri (JV) | } |
2281 | 9ce56db6 | Venkateswararao Jujjuri (JV) | |
2282 | 9f107513 | Anthony Liguori | if (lstat(fse->path, &stat)) {
|
2283 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s does not exist\n", fse->path);
|
2284 | 9f107513 | Anthony Liguori | exit(1);
|
2285 | 9f107513 | Anthony Liguori | } else if (!S_ISDIR(stat.st_mode)) { |
2286 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s is not a directory \n", fse->path);
|
2287 | 9f107513 | Anthony Liguori | exit(1);
|
2288 | 9f107513 | Anthony Liguori | } |
2289 | 9f107513 | Anthony Liguori | |
2290 | 9f107513 | Anthony Liguori | s->ctx.fs_root = qemu_strdup(fse->path); |
2291 | 9f107513 | Anthony Liguori | len = strlen(conf->tag); |
2292 | 9f107513 | Anthony Liguori | if (len > MAX_TAG_LEN) {
|
2293 | 9f107513 | Anthony Liguori | len = MAX_TAG_LEN; |
2294 | 9f107513 | Anthony Liguori | } |
2295 | 9f107513 | Anthony Liguori | /* s->tag is non-NULL terminated string */
|
2296 | 9f107513 | Anthony Liguori | s->tag = qemu_malloc(len); |
2297 | 9f107513 | Anthony Liguori | memcpy(s->tag, conf->tag, len); |
2298 | 9f107513 | Anthony Liguori | s->tag_len = len; |
2299 | 9f107513 | Anthony Liguori | s->ctx.uid = -1;
|
2300 | 9f107513 | Anthony Liguori | |
2301 | 9f107513 | Anthony Liguori | s->ops = fse->ops; |
2302 | 9f107513 | Anthony Liguori | s->vdev.get_features = virtio_9p_get_features; |
2303 | 9f107513 | Anthony Liguori | s->config_size = sizeof(struct virtio_9p_config) + |
2304 | 9f107513 | Anthony Liguori | s->tag_len; |
2305 | 9f107513 | Anthony Liguori | s->vdev.get_config = virtio_9p_get_config; |
2306 | 9f107513 | Anthony Liguori | |
2307 | 9f107513 | Anthony Liguori | return &s->vdev;
|
2308 | 9f107513 | Anthony Liguori | } |