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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 | 131dcb25 | Anthony Liguori | static int v9fs_do_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf) |
25 | 131dcb25 | Anthony Liguori | { |
26 | 131dcb25 | Anthony Liguori | return s->ops->lstat(&s->ctx, path->data, stbuf);
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27 | 131dcb25 | Anthony Liguori | } |
28 | 131dcb25 | Anthony Liguori | |
29 | 131dcb25 | Anthony Liguori | static int v9fs_do_setuid(V9fsState *s, uid_t uid) |
30 | 131dcb25 | Anthony Liguori | { |
31 | 131dcb25 | Anthony Liguori | return s->ops->setuid(&s->ctx, uid);
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32 | 131dcb25 | Anthony Liguori | } |
33 | 131dcb25 | Anthony Liguori | |
34 | 131dcb25 | Anthony Liguori | static ssize_t v9fs_do_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
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35 | 131dcb25 | Anthony Liguori | { |
36 | 131dcb25 | Anthony Liguori | ssize_t len; |
37 | 131dcb25 | Anthony Liguori | |
38 | 131dcb25 | Anthony Liguori | buf->data = qemu_malloc(1024);
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39 | 131dcb25 | Anthony Liguori | |
40 | 131dcb25 | Anthony Liguori | len = s->ops->readlink(&s->ctx, path->data, buf->data, 1024 - 1); |
41 | 131dcb25 | Anthony Liguori | if (len > -1) { |
42 | 131dcb25 | Anthony Liguori | buf->size = len; |
43 | 131dcb25 | Anthony Liguori | buf->data[len] = 0;
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44 | 131dcb25 | Anthony Liguori | } |
45 | 131dcb25 | Anthony Liguori | |
46 | 131dcb25 | Anthony Liguori | return len;
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47 | 131dcb25 | Anthony Liguori | } |
48 | 131dcb25 | Anthony Liguori | |
49 | 131dcb25 | Anthony Liguori | static int v9fs_do_close(V9fsState *s, int fd) |
50 | 131dcb25 | Anthony Liguori | { |
51 | 131dcb25 | Anthony Liguori | return s->ops->close(&s->ctx, fd);
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52 | 131dcb25 | Anthony Liguori | } |
53 | 131dcb25 | Anthony Liguori | |
54 | 131dcb25 | Anthony Liguori | static int v9fs_do_closedir(V9fsState *s, DIR *dir) |
55 | 131dcb25 | Anthony Liguori | { |
56 | 131dcb25 | Anthony Liguori | return s->ops->closedir(&s->ctx, dir);
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57 | 131dcb25 | Anthony Liguori | } |
58 | 131dcb25 | Anthony Liguori | |
59 | a6568fe2 | Anthony Liguori | static int v9fs_do_open(V9fsState *s, V9fsString *path, int flags) |
60 | a6568fe2 | Anthony Liguori | { |
61 | a6568fe2 | Anthony Liguori | return s->ops->open(&s->ctx, path->data, flags);
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62 | a6568fe2 | Anthony Liguori | } |
63 | a6568fe2 | Anthony Liguori | |
64 | a6568fe2 | Anthony Liguori | static DIR *v9fs_do_opendir(V9fsState *s, V9fsString *path)
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65 | a6568fe2 | Anthony Liguori | { |
66 | a6568fe2 | Anthony Liguori | return s->ops->opendir(&s->ctx, path->data);
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67 | a6568fe2 | Anthony Liguori | } |
68 | a6568fe2 | Anthony Liguori | |
69 | a9231555 | Anthony Liguori | static void v9fs_do_rewinddir(V9fsState *s, DIR *dir) |
70 | a9231555 | Anthony Liguori | { |
71 | a9231555 | Anthony Liguori | return s->ops->rewinddir(&s->ctx, dir);
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72 | a9231555 | Anthony Liguori | } |
73 | a9231555 | Anthony Liguori | |
74 | a9231555 | Anthony Liguori | static off_t v9fs_do_telldir(V9fsState *s, DIR *dir)
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75 | a9231555 | Anthony Liguori | { |
76 | a9231555 | Anthony Liguori | return s->ops->telldir(&s->ctx, dir);
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77 | a9231555 | Anthony Liguori | } |
78 | a9231555 | Anthony Liguori | |
79 | a9231555 | Anthony Liguori | static struct dirent *v9fs_do_readdir(V9fsState *s, DIR *dir) |
80 | a9231555 | Anthony Liguori | { |
81 | a9231555 | Anthony Liguori | return s->ops->readdir(&s->ctx, dir);
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82 | a9231555 | Anthony Liguori | } |
83 | a9231555 | Anthony Liguori | |
84 | a9231555 | Anthony Liguori | static void v9fs_do_seekdir(V9fsState *s, DIR *dir, off_t off) |
85 | a9231555 | Anthony Liguori | { |
86 | a9231555 | Anthony Liguori | return s->ops->seekdir(&s->ctx, dir, off);
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87 | a9231555 | Anthony Liguori | } |
88 | a9231555 | Anthony Liguori | |
89 | a9231555 | Anthony Liguori | static int v9fs_do_readv(V9fsState *s, int fd, const struct iovec *iov, |
90 | a9231555 | Anthony Liguori | int iovcnt)
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91 | a9231555 | Anthony Liguori | { |
92 | a9231555 | Anthony Liguori | return s->ops->readv(&s->ctx, fd, iov, iovcnt);
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93 | a9231555 | Anthony Liguori | } |
94 | a9231555 | Anthony Liguori | |
95 | a9231555 | Anthony Liguori | static off_t v9fs_do_lseek(V9fsState *s, int fd, off_t offset, int whence) |
96 | a9231555 | Anthony Liguori | { |
97 | a9231555 | Anthony Liguori | return s->ops->lseek(&s->ctx, fd, offset, whence);
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98 | a9231555 | Anthony Liguori | } |
99 | a9231555 | Anthony Liguori | |
100 | 8449360c | Anthony Liguori | static int v9fs_do_writev(V9fsState *s, int fd, const struct iovec *iov, |
101 | 8449360c | Anthony Liguori | int iovcnt)
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102 | 8449360c | Anthony Liguori | { |
103 | 8449360c | Anthony Liguori | return s->ops->writev(&s->ctx, fd, iov, iovcnt);
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104 | 8449360c | Anthony Liguori | } |
105 | 8449360c | Anthony Liguori | |
106 | c494dd6f | Anthony Liguori | static int v9fs_do_chmod(V9fsState *s, V9fsString *path, mode_t mode) |
107 | c494dd6f | Anthony Liguori | { |
108 | c494dd6f | Anthony Liguori | return s->ops->chmod(&s->ctx, path->data, mode);
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109 | c494dd6f | Anthony Liguori | } |
110 | c494dd6f | Anthony Liguori | |
111 | c494dd6f | Anthony Liguori | static int v9fs_do_mknod(V9fsState *s, V9fsString *path, mode_t mode, dev_t dev) |
112 | c494dd6f | Anthony Liguori | { |
113 | c494dd6f | Anthony Liguori | return s->ops->mknod(&s->ctx, path->data, mode, dev);
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114 | c494dd6f | Anthony Liguori | } |
115 | c494dd6f | Anthony Liguori | |
116 | c494dd6f | Anthony Liguori | static int v9fs_do_mksock(V9fsState *s, V9fsString *path) |
117 | c494dd6f | Anthony Liguori | { |
118 | c494dd6f | Anthony Liguori | return s->ops->mksock(&s->ctx, path->data);
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119 | c494dd6f | Anthony Liguori | } |
120 | c494dd6f | Anthony Liguori | |
121 | c494dd6f | Anthony Liguori | static int v9fs_do_mkdir(V9fsState *s, V9fsString *path, mode_t mode) |
122 | c494dd6f | Anthony Liguori | { |
123 | c494dd6f | Anthony Liguori | return s->ops->mkdir(&s->ctx, path->data, mode);
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124 | c494dd6f | Anthony Liguori | } |
125 | c494dd6f | Anthony Liguori | |
126 | c494dd6f | Anthony Liguori | static int v9fs_do_fstat(V9fsState *s, int fd, struct stat *stbuf) |
127 | c494dd6f | Anthony Liguori | { |
128 | c494dd6f | Anthony Liguori | return s->ops->fstat(&s->ctx, fd, stbuf);
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129 | c494dd6f | Anthony Liguori | } |
130 | c494dd6f | Anthony Liguori | |
131 | c494dd6f | Anthony Liguori | static int v9fs_do_open2(V9fsState *s, V9fsString *path, int flags, mode_t mode) |
132 | c494dd6f | Anthony Liguori | { |
133 | c494dd6f | Anthony Liguori | return s->ops->open2(&s->ctx, path->data, flags, mode);
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134 | c494dd6f | Anthony Liguori | } |
135 | c494dd6f | Anthony Liguori | |
136 | c494dd6f | Anthony Liguori | static int v9fs_do_symlink(V9fsState *s, V9fsString *oldpath, |
137 | c494dd6f | Anthony Liguori | V9fsString *newpath) |
138 | c494dd6f | Anthony Liguori | { |
139 | c494dd6f | Anthony Liguori | return s->ops->symlink(&s->ctx, oldpath->data, newpath->data);
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140 | c494dd6f | Anthony Liguori | } |
141 | c494dd6f | Anthony Liguori | |
142 | c494dd6f | Anthony Liguori | static int v9fs_do_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath) |
143 | c494dd6f | Anthony Liguori | { |
144 | c494dd6f | Anthony Liguori | return s->ops->link(&s->ctx, oldpath->data, newpath->data);
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145 | c494dd6f | Anthony Liguori | } |
146 | c494dd6f | Anthony Liguori | |
147 | 8cf89e00 | Anthony Liguori | static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size) |
148 | 8cf89e00 | Anthony Liguori | { |
149 | 8cf89e00 | Anthony Liguori | return s->ops->truncate(&s->ctx, path->data, size);
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150 | 8cf89e00 | Anthony Liguori | } |
151 | 8cf89e00 | Anthony Liguori | |
152 | 8cf89e00 | Anthony Liguori | static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath, |
153 | 8cf89e00 | Anthony Liguori | V9fsString *newpath) |
154 | 8cf89e00 | Anthony Liguori | { |
155 | 8cf89e00 | Anthony Liguori | return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
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156 | 8cf89e00 | Anthony Liguori | } |
157 | 8cf89e00 | Anthony Liguori | |
158 | 8cf89e00 | Anthony Liguori | static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid) |
159 | 8cf89e00 | Anthony Liguori | { |
160 | 8cf89e00 | Anthony Liguori | return s->ops->chown(&s->ctx, path->data, uid, gid);
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161 | 8cf89e00 | Anthony Liguori | } |
162 | 8cf89e00 | Anthony Liguori | |
163 | 8cf89e00 | Anthony Liguori | static int v9fs_do_utime(V9fsState *s, V9fsString *path, |
164 | 8cf89e00 | Anthony Liguori | const struct utimbuf *buf) |
165 | 8cf89e00 | Anthony Liguori | { |
166 | 8cf89e00 | Anthony Liguori | return s->ops->utime(&s->ctx, path->data, buf);
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167 | 8cf89e00 | Anthony Liguori | } |
168 | 8cf89e00 | Anthony Liguori | |
169 | 5bae1900 | Anthony Liguori | static int v9fs_do_remove(V9fsState *s, V9fsString *path) |
170 | 5bae1900 | Anthony Liguori | { |
171 | 5bae1900 | Anthony Liguori | return s->ops->remove(&s->ctx, path->data);
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172 | 5bae1900 | Anthony Liguori | } |
173 | 5bae1900 | Anthony Liguori | |
174 | 8cf89e00 | Anthony Liguori | static int v9fs_do_fsync(V9fsState *s, int fd) |
175 | 8cf89e00 | Anthony Liguori | { |
176 | 8cf89e00 | Anthony Liguori | return s->ops->fsync(&s->ctx, fd);
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177 | 8cf89e00 | Anthony Liguori | } |
178 | 8cf89e00 | Anthony Liguori | |
179 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
180 | a03f7874 | Anthony Liguori | { |
181 | a03f7874 | Anthony Liguori | str->data = NULL;
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182 | a03f7874 | Anthony Liguori | str->size = 0;
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183 | a03f7874 | Anthony Liguori | } |
184 | a03f7874 | Anthony Liguori | |
185 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
186 | a03f7874 | Anthony Liguori | { |
187 | a03f7874 | Anthony Liguori | qemu_free(str->data); |
188 | a03f7874 | Anthony Liguori | str->data = NULL;
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189 | a03f7874 | Anthony Liguori | str->size = 0;
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190 | a03f7874 | Anthony Liguori | } |
191 | a03f7874 | Anthony Liguori | |
192 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
193 | a03f7874 | Anthony Liguori | { |
194 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
195 | a03f7874 | Anthony Liguori | } |
196 | a03f7874 | Anthony Liguori | |
197 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
198 | a03f7874 | Anthony Liguori | { |
199 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
200 | a03f7874 | Anthony Liguori | |
201 | a03f7874 | Anthony Liguori | switch (type) {
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202 | a03f7874 | Anthony Liguori | case 'u': { |
203 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
204 | a03f7874 | Anthony Liguori | |
205 | a03f7874 | Anthony Liguori | do {
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206 | a03f7874 | Anthony Liguori | ret++; |
207 | a03f7874 | Anthony Liguori | num = num/10;
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208 | a03f7874 | Anthony Liguori | } while (num);
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209 | a03f7874 | Anthony Liguori | break;
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210 | a03f7874 | Anthony Liguori | } |
211 | a03f7874 | Anthony Liguori | default:
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212 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
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213 | a03f7874 | Anthony Liguori | return -1; |
214 | a03f7874 | Anthony Liguori | } |
215 | a03f7874 | Anthony Liguori | |
216 | a03f7874 | Anthony Liguori | return ret;
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217 | a03f7874 | Anthony Liguori | } |
218 | a03f7874 | Anthony Liguori | |
219 | a03f7874 | Anthony Liguori | static int v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
220 | a03f7874 | Anthony Liguori | { |
221 | a03f7874 | Anthony Liguori | va_list ap2; |
222 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
223 | a03f7874 | Anthony Liguori | int len = 0; |
224 | a03f7874 | Anthony Liguori | int nr_args = 0; |
225 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
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226 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
227 | a03f7874 | Anthony Liguori | |
228 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
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229 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
230 | a03f7874 | Anthony Liguori | nr_args++; |
231 | a03f7874 | Anthony Liguori | iter++; |
232 | a03f7874 | Anthony Liguori | } |
233 | a03f7874 | Anthony Liguori | |
234 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
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235 | a03f7874 | Anthony Liguori | |
236 | a03f7874 | Anthony Liguori | if (!nr_args) {
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237 | a03f7874 | Anthony Liguori | goto alloc_print;
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238 | a03f7874 | Anthony Liguori | } |
239 | a03f7874 | Anthony Liguori | |
240 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
241 | a03f7874 | Anthony Liguori | |
242 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
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243 | a03f7874 | Anthony Liguori | |
244 | a03f7874 | Anthony Liguori | /* Now parse the format string */
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245 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
246 | a03f7874 | Anthony Liguori | iter++; |
247 | a03f7874 | Anthony Liguori | switch (*iter) {
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248 | a03f7874 | Anthony Liguori | case 'u': |
249 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
250 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
251 | a03f7874 | Anthony Liguori | break;
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252 | a03f7874 | Anthony Liguori | case 's': |
253 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
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254 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
255 | a03f7874 | Anthony Liguori | break;
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256 | a03f7874 | Anthony Liguori | case 'c': |
257 | a03f7874 | Anthony Liguori | len += 1;
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258 | a03f7874 | Anthony Liguori | break;
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259 | a03f7874 | Anthony Liguori | default:
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260 | a03f7874 | Anthony Liguori | fprintf(stderr, |
261 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
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262 | a03f7874 | Anthony Liguori | return -1; |
263 | a03f7874 | Anthony Liguori | } |
264 | a03f7874 | Anthony Liguori | iter++; |
265 | a03f7874 | Anthony Liguori | } |
266 | a03f7874 | Anthony Liguori | |
267 | a03f7874 | Anthony Liguori | alloc_print:
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268 | a03f7874 | Anthony Liguori | *strp = qemu_malloc((len + 1) * sizeof(**strp)); |
269 | a03f7874 | Anthony Liguori | |
270 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
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271 | a03f7874 | Anthony Liguori | } |
272 | a03f7874 | Anthony Liguori | |
273 | a03f7874 | Anthony Liguori | static void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
274 | a03f7874 | Anthony Liguori | { |
275 | a03f7874 | Anthony Liguori | va_list ap; |
276 | a03f7874 | Anthony Liguori | int err;
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277 | a03f7874 | Anthony Liguori | |
278 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
279 | a03f7874 | Anthony Liguori | |
280 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
281 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
282 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
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283 | a03f7874 | Anthony Liguori | va_end(ap); |
284 | a03f7874 | Anthony Liguori | |
285 | a03f7874 | Anthony Liguori | str->size = err; |
286 | a03f7874 | Anthony Liguori | } |
287 | a03f7874 | Anthony Liguori | |
288 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
289 | a03f7874 | Anthony Liguori | { |
290 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
291 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
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292 | a03f7874 | Anthony Liguori | } |
293 | a03f7874 | Anthony Liguori | |
294 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
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295 | a03f7874 | Anthony Liguori | { |
296 | a03f7874 | Anthony Liguori | return str->size;
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297 | a03f7874 | Anthony Liguori | } |
298 | a03f7874 | Anthony Liguori | |
299 | 286d5652 | Anthony Liguori | static V9fsFidState *lookup_fid(V9fsState *s, int32_t fid)
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300 | 286d5652 | Anthony Liguori | { |
301 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
302 | 286d5652 | Anthony Liguori | |
303 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
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304 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
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305 | 286d5652 | Anthony Liguori | v9fs_do_setuid(s, f->uid); |
306 | 286d5652 | Anthony Liguori | return f;
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307 | 286d5652 | Anthony Liguori | } |
308 | 286d5652 | Anthony Liguori | } |
309 | 286d5652 | Anthony Liguori | |
310 | 286d5652 | Anthony Liguori | return NULL; |
311 | 286d5652 | Anthony Liguori | } |
312 | 286d5652 | Anthony Liguori | |
313 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
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314 | 286d5652 | Anthony Liguori | { |
315 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
316 | 286d5652 | Anthony Liguori | |
317 | 286d5652 | Anthony Liguori | f = lookup_fid(s, fid); |
318 | 286d5652 | Anthony Liguori | if (f) {
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319 | 286d5652 | Anthony Liguori | return NULL; |
320 | 286d5652 | Anthony Liguori | } |
321 | 286d5652 | Anthony Liguori | |
322 | 286d5652 | Anthony Liguori | f = qemu_mallocz(sizeof(V9fsFidState));
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323 | 286d5652 | Anthony Liguori | |
324 | 286d5652 | Anthony Liguori | f->fid = fid; |
325 | 286d5652 | Anthony Liguori | f->fd = -1;
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326 | 286d5652 | Anthony Liguori | f->dir = NULL;
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327 | 286d5652 | Anthony Liguori | |
328 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
329 | 286d5652 | Anthony Liguori | s->fid_list = f; |
330 | 286d5652 | Anthony Liguori | |
331 | 286d5652 | Anthony Liguori | return f;
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332 | 286d5652 | Anthony Liguori | } |
333 | 286d5652 | Anthony Liguori | |
334 | 286d5652 | Anthony Liguori | static int free_fid(V9fsState *s, int32_t fid) |
335 | 286d5652 | Anthony Liguori | { |
336 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
337 | 286d5652 | Anthony Liguori | |
338 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
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339 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
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340 | 286d5652 | Anthony Liguori | break;
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341 | 286d5652 | Anthony Liguori | } |
342 | 286d5652 | Anthony Liguori | } |
343 | 286d5652 | Anthony Liguori | |
344 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
345 | 286d5652 | Anthony Liguori | return -ENOENT;
|
346 | 286d5652 | Anthony Liguori | } |
347 | 286d5652 | Anthony Liguori | |
348 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
349 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
350 | 286d5652 | Anthony Liguori | |
351 | 286d5652 | Anthony Liguori | if (fidp->fd != -1) { |
352 | 286d5652 | Anthony Liguori | v9fs_do_close(s, fidp->fd); |
353 | 286d5652 | Anthony Liguori | } |
354 | 286d5652 | Anthony Liguori | if (fidp->dir) {
|
355 | 286d5652 | Anthony Liguori | v9fs_do_closedir(s, fidp->dir); |
356 | 286d5652 | Anthony Liguori | } |
357 | 286d5652 | Anthony Liguori | v9fs_string_free(&fidp->path); |
358 | 286d5652 | Anthony Liguori | qemu_free(fidp); |
359 | 286d5652 | Anthony Liguori | |
360 | 286d5652 | Anthony Liguori | return 0; |
361 | 286d5652 | Anthony Liguori | } |
362 | 286d5652 | Anthony Liguori | |
363 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
364 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
365 | 286d5652 | Anthony Liguori | |
366 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
367 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
368 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
369 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
370 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
371 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
372 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
373 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
374 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
375 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
376 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
377 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
378 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
379 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
380 | 286d5652 | Anthony Liguori | |
381 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
382 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
383 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
384 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
385 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
386 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
387 | 286d5652 | Anthony Liguori | |
388 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
389 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
390 | 286d5652 | Anthony Liguori | { |
391 | 286d5652 | Anthony Liguori | size_t size; |
392 | 286d5652 | Anthony Liguori | |
393 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
394 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
395 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
396 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
397 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
398 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
399 | 286d5652 | Anthony Liguori | } |
400 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
401 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
402 | 286d5652 | Anthony Liguori | } |
403 | 286d5652 | Anthony Liguori | } |
404 | 286d5652 | Anthony Liguori | |
405 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
406 | 286d5652 | Anthony Liguori | { |
407 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
408 | 286d5652 | Anthony Liguori | int err;
|
409 | 286d5652 | Anthony Liguori | |
410 | 286d5652 | Anthony Liguori | err = v9fs_do_lstat(s, &fidp->path, &stbuf); |
411 | 286d5652 | Anthony Liguori | if (err) {
|
412 | 286d5652 | Anthony Liguori | return err;
|
413 | 286d5652 | Anthony Liguori | } |
414 | 286d5652 | Anthony Liguori | |
415 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
416 | 286d5652 | Anthony Liguori | return 0; |
417 | 286d5652 | Anthony Liguori | } |
418 | 286d5652 | Anthony Liguori | |
419 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
420 | 9f107513 | Anthony Liguori | { |
421 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
422 | 9f107513 | Anthony Liguori | |
423 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
424 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
425 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
426 | 9f107513 | Anthony Liguori | } |
427 | 9f107513 | Anthony Liguori | return pdu;
|
428 | 9f107513 | Anthony Liguori | } |
429 | 9f107513 | Anthony Liguori | |
430 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
431 | 9f107513 | Anthony Liguori | { |
432 | 9f107513 | Anthony Liguori | if (pdu) {
|
433 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
434 | 9f107513 | Anthony Liguori | } |
435 | 9f107513 | Anthony Liguori | } |
436 | 9f107513 | Anthony Liguori | |
437 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
438 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
439 | 9f107513 | Anthony Liguori | { |
440 | 9f107513 | Anthony Liguori | int i = 0; |
441 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
442 | 9f107513 | Anthony Liguori | |
443 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
444 | 9f107513 | Anthony Liguori | size_t len; |
445 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
446 | 9f107513 | Anthony Liguori | /* skip this sg */
|
447 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
448 | 9f107513 | Anthony Liguori | continue;
|
449 | 9f107513 | Anthony Liguori | } else {
|
450 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
451 | 9f107513 | Anthony Liguori | if (pack) {
|
452 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
453 | 9f107513 | Anthony Liguori | } else {
|
454 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
455 | 9f107513 | Anthony Liguori | } |
456 | 9f107513 | Anthony Liguori | size -= len; |
457 | 9f107513 | Anthony Liguori | copied += len; |
458 | 9f107513 | Anthony Liguori | addr += len; |
459 | 9f107513 | Anthony Liguori | if (size) {
|
460 | 9f107513 | Anthony Liguori | offset = 0;
|
461 | 9f107513 | Anthony Liguori | continue;
|
462 | 9f107513 | Anthony Liguori | } |
463 | 9f107513 | Anthony Liguori | } |
464 | 9f107513 | Anthony Liguori | } |
465 | 9f107513 | Anthony Liguori | |
466 | 9f107513 | Anthony Liguori | return copied;
|
467 | 9f107513 | Anthony Liguori | } |
468 | 9f107513 | Anthony Liguori | |
469 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
470 | 405a549a | Anthony Liguori | { |
471 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
472 | 405a549a | Anthony Liguori | offset, size, 0);
|
473 | 405a549a | Anthony Liguori | } |
474 | 405a549a | Anthony Liguori | |
475 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
476 | 405a549a | Anthony Liguori | size_t size) |
477 | 405a549a | Anthony Liguori | { |
478 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
479 | 405a549a | Anthony Liguori | offset, size, 1);
|
480 | 405a549a | Anthony Liguori | } |
481 | 405a549a | Anthony Liguori | |
482 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
483 | 405a549a | Anthony Liguori | { |
484 | 405a549a | Anthony Liguori | size_t pos = 0;
|
485 | 405a549a | Anthony Liguori | int i, j;
|
486 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
487 | 405a549a | Anthony Liguori | unsigned int num; |
488 | 405a549a | Anthony Liguori | |
489 | 405a549a | Anthony Liguori | if (rx) {
|
490 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
491 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
492 | 405a549a | Anthony Liguori | } else {
|
493 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
494 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
495 | 405a549a | Anthony Liguori | } |
496 | 405a549a | Anthony Liguori | |
497 | 405a549a | Anthony Liguori | j = 0;
|
498 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
499 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
500 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
501 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
502 | 405a549a | Anthony Liguori | j++; |
503 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
504 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
505 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
506 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
507 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
508 | 405a549a | Anthony Liguori | j++; |
509 | 405a549a | Anthony Liguori | } |
510 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
511 | 405a549a | Anthony Liguori | } |
512 | 405a549a | Anthony Liguori | |
513 | 405a549a | Anthony Liguori | return j;
|
514 | 405a549a | Anthony Liguori | } |
515 | 405a549a | Anthony Liguori | |
516 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
517 | 405a549a | Anthony Liguori | { |
518 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
519 | 405a549a | Anthony Liguori | va_list ap; |
520 | 405a549a | Anthony Liguori | int i;
|
521 | 405a549a | Anthony Liguori | |
522 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
523 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
524 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
525 | 405a549a | Anthony Liguori | case 'b': { |
526 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
527 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
528 | 405a549a | Anthony Liguori | break;
|
529 | 405a549a | Anthony Liguori | } |
530 | 405a549a | Anthony Liguori | case 'w': { |
531 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
532 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
533 | 405a549a | Anthony Liguori | val = le16_to_cpupu(valp); |
534 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
535 | 405a549a | Anthony Liguori | *valp = val; |
536 | 405a549a | Anthony Liguori | break;
|
537 | 405a549a | Anthony Liguori | } |
538 | 405a549a | Anthony Liguori | case 'd': { |
539 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
540 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
541 | 405a549a | Anthony Liguori | val = le32_to_cpupu(valp); |
542 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
543 | 405a549a | Anthony Liguori | *valp = val; |
544 | 405a549a | Anthony Liguori | break;
|
545 | 405a549a | Anthony Liguori | } |
546 | 405a549a | Anthony Liguori | case 'q': { |
547 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
548 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
549 | 405a549a | Anthony Liguori | val = le64_to_cpup(valp); |
550 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
551 | 405a549a | Anthony Liguori | *valp = val; |
552 | 405a549a | Anthony Liguori | break;
|
553 | 405a549a | Anthony Liguori | } |
554 | 405a549a | Anthony Liguori | case 'v': { |
555 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
556 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
557 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
558 | 405a549a | Anthony Liguori | break;
|
559 | 405a549a | Anthony Liguori | } |
560 | 405a549a | Anthony Liguori | case 's': { |
561 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
562 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
563 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
564 | 405a549a | Anthony Liguori | str->data = qemu_malloc(str->size + 1);
|
565 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
566 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
567 | 405a549a | Anthony Liguori | break;
|
568 | 405a549a | Anthony Liguori | } |
569 | 405a549a | Anthony Liguori | case 'Q': { |
570 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
571 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
572 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
573 | 405a549a | Anthony Liguori | break;
|
574 | 405a549a | Anthony Liguori | } |
575 | 405a549a | Anthony Liguori | case 'S': { |
576 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
577 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
578 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
579 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
580 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
581 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
582 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
583 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
584 | 405a549a | Anthony Liguori | &statp->n_muid); |
585 | 405a549a | Anthony Liguori | break;
|
586 | 405a549a | Anthony Liguori | } |
587 | 405a549a | Anthony Liguori | default:
|
588 | 405a549a | Anthony Liguori | break;
|
589 | 405a549a | Anthony Liguori | } |
590 | 405a549a | Anthony Liguori | } |
591 | 405a549a | Anthony Liguori | |
592 | 405a549a | Anthony Liguori | va_end(ap); |
593 | 405a549a | Anthony Liguori | |
594 | 405a549a | Anthony Liguori | return offset - old_offset;
|
595 | 405a549a | Anthony Liguori | } |
596 | 405a549a | Anthony Liguori | |
597 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
598 | 405a549a | Anthony Liguori | { |
599 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
600 | 405a549a | Anthony Liguori | va_list ap; |
601 | 405a549a | Anthony Liguori | int i;
|
602 | 405a549a | Anthony Liguori | |
603 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
604 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
605 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
606 | 405a549a | Anthony Liguori | case 'b': { |
607 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
608 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
609 | 405a549a | Anthony Liguori | break;
|
610 | 405a549a | Anthony Liguori | } |
611 | 405a549a | Anthony Liguori | case 'w': { |
612 | 405a549a | Anthony Liguori | uint16_t val; |
613 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
614 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
615 | 405a549a | Anthony Liguori | break;
|
616 | 405a549a | Anthony Liguori | } |
617 | 405a549a | Anthony Liguori | case 'd': { |
618 | 405a549a | Anthony Liguori | uint32_t val; |
619 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
620 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
621 | 405a549a | Anthony Liguori | break;
|
622 | 405a549a | Anthony Liguori | } |
623 | 405a549a | Anthony Liguori | case 'q': { |
624 | 405a549a | Anthony Liguori | uint64_t val; |
625 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
626 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
627 | 405a549a | Anthony Liguori | break;
|
628 | 405a549a | Anthony Liguori | } |
629 | 405a549a | Anthony Liguori | case 'v': { |
630 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
631 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
632 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
633 | 405a549a | Anthony Liguori | break;
|
634 | 405a549a | Anthony Liguori | } |
635 | 405a549a | Anthony Liguori | case 's': { |
636 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
637 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
638 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
639 | 405a549a | Anthony Liguori | break;
|
640 | 405a549a | Anthony Liguori | } |
641 | 405a549a | Anthony Liguori | case 'Q': { |
642 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
643 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
644 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
645 | 405a549a | Anthony Liguori | break;
|
646 | 405a549a | Anthony Liguori | } |
647 | 405a549a | Anthony Liguori | case 'S': { |
648 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
649 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
650 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
651 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
652 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
653 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
654 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
655 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
656 | 405a549a | Anthony Liguori | break;
|
657 | 405a549a | Anthony Liguori | } |
658 | 405a549a | Anthony Liguori | default:
|
659 | 405a549a | Anthony Liguori | break;
|
660 | 405a549a | Anthony Liguori | } |
661 | 405a549a | Anthony Liguori | } |
662 | 405a549a | Anthony Liguori | va_end(ap); |
663 | 405a549a | Anthony Liguori | |
664 | 405a549a | Anthony Liguori | return offset - old_offset;
|
665 | 405a549a | Anthony Liguori | } |
666 | 405a549a | Anthony Liguori | |
667 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
668 | 405a549a | Anthony Liguori | { |
669 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
670 | 405a549a | Anthony Liguori | |
671 | 405a549a | Anthony Liguori | if (len < 0) { |
672 | 405a549a | Anthony Liguori | V9fsString str; |
673 | 405a549a | Anthony Liguori | int err = -len;
|
674 | 405a549a | Anthony Liguori | |
675 | 405a549a | Anthony Liguori | str.data = strerror(err); |
676 | 405a549a | Anthony Liguori | str.size = strlen(str.data); |
677 | 405a549a | Anthony Liguori | |
678 | 405a549a | Anthony Liguori | len = 7;
|
679 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "s", &str);
|
680 | 405a549a | Anthony Liguori | if (dotu) {
|
681 | 405a549a | Anthony Liguori | len += pdu_marshal(pdu, len, "d", err);
|
682 | 405a549a | Anthony Liguori | } |
683 | 405a549a | Anthony Liguori | |
684 | 405a549a | Anthony Liguori | id = P9_RERROR; |
685 | 405a549a | Anthony Liguori | } |
686 | 405a549a | Anthony Liguori | |
687 | 405a549a | Anthony Liguori | /* fill out the header */
|
688 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
689 | 405a549a | Anthony Liguori | |
690 | 405a549a | Anthony Liguori | /* keep these in sync */
|
691 | 405a549a | Anthony Liguori | pdu->size = len; |
692 | 405a549a | Anthony Liguori | pdu->id = id; |
693 | 405a549a | Anthony Liguori | |
694 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
695 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
696 | 405a549a | Anthony Liguori | |
697 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
698 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
699 | 405a549a | Anthony Liguori | |
700 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
701 | 405a549a | Anthony Liguori | } |
702 | 405a549a | Anthony Liguori | |
703 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
704 | bb9e3216 | Anthony Liguori | { |
705 | bb9e3216 | Anthony Liguori | mode_t ret; |
706 | bb9e3216 | Anthony Liguori | |
707 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
708 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
709 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
710 | bb9e3216 | Anthony Liguori | } |
711 | bb9e3216 | Anthony Liguori | |
712 | bb9e3216 | Anthony Liguori | if (dotu) {
|
713 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SYMLINK) {
|
714 | bb9e3216 | Anthony Liguori | ret |= S_IFLNK; |
715 | bb9e3216 | Anthony Liguori | } |
716 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SOCKET) {
|
717 | bb9e3216 | Anthony Liguori | ret |= S_IFSOCK; |
718 | bb9e3216 | Anthony Liguori | } |
719 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
720 | bb9e3216 | Anthony Liguori | ret |= S_IFIFO; |
721 | bb9e3216 | Anthony Liguori | } |
722 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DEVICE) {
|
723 | bb9e3216 | Anthony Liguori | if (extension && extension->data[0] == 'c') { |
724 | bb9e3216 | Anthony Liguori | ret |= S_IFCHR; |
725 | bb9e3216 | Anthony Liguori | } else {
|
726 | bb9e3216 | Anthony Liguori | ret |= S_IFBLK; |
727 | bb9e3216 | Anthony Liguori | } |
728 | bb9e3216 | Anthony Liguori | } |
729 | bb9e3216 | Anthony Liguori | } |
730 | bb9e3216 | Anthony Liguori | |
731 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
732 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
733 | bb9e3216 | Anthony Liguori | } |
734 | bb9e3216 | Anthony Liguori | |
735 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
736 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
737 | bb9e3216 | Anthony Liguori | } |
738 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
739 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
740 | bb9e3216 | Anthony Liguori | } |
741 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
742 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
743 | bb9e3216 | Anthony Liguori | } |
744 | bb9e3216 | Anthony Liguori | |
745 | bb9e3216 | Anthony Liguori | return ret;
|
746 | bb9e3216 | Anthony Liguori | } |
747 | bb9e3216 | Anthony Liguori | |
748 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
749 | bb9e3216 | Anthony Liguori | { |
750 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
751 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
752 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
753 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
754 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
755 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
756 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
757 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
758 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
759 | bb9e3216 | Anthony Liguori | !stat->name.size && |
760 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
761 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
762 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
763 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
764 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
765 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
766 | bb9e3216 | Anthony Liguori | return 1; |
767 | bb9e3216 | Anthony Liguori | } |
768 | bb9e3216 | Anthony Liguori | |
769 | bb9e3216 | Anthony Liguori | return 0; |
770 | bb9e3216 | Anthony Liguori | } |
771 | bb9e3216 | Anthony Liguori | |
772 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
773 | bb9e3216 | Anthony Liguori | { |
774 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
775 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
776 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
777 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
778 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
779 | bb9e3216 | Anthony Liguori | } |
780 | bb9e3216 | Anthony Liguori | |
781 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
782 | bb9e3216 | Anthony Liguori | { |
783 | bb9e3216 | Anthony Liguori | uint32_t mode; |
784 | bb9e3216 | Anthony Liguori | |
785 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
786 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
787 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
788 | bb9e3216 | Anthony Liguori | } |
789 | bb9e3216 | Anthony Liguori | |
790 | bb9e3216 | Anthony Liguori | if (dotu) {
|
791 | bb9e3216 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
792 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SYMLINK; |
793 | bb9e3216 | Anthony Liguori | } |
794 | bb9e3216 | Anthony Liguori | |
795 | bb9e3216 | Anthony Liguori | if (S_ISSOCK(stbuf->st_mode)) {
|
796 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SOCKET; |
797 | bb9e3216 | Anthony Liguori | } |
798 | bb9e3216 | Anthony Liguori | |
799 | bb9e3216 | Anthony Liguori | if (S_ISFIFO(stbuf->st_mode)) {
|
800 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_NAMED_PIPE; |
801 | bb9e3216 | Anthony Liguori | } |
802 | bb9e3216 | Anthony Liguori | |
803 | bb9e3216 | Anthony Liguori | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
804 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DEVICE; |
805 | bb9e3216 | Anthony Liguori | } |
806 | bb9e3216 | Anthony Liguori | |
807 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISUID) {
|
808 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETUID; |
809 | bb9e3216 | Anthony Liguori | } |
810 | bb9e3216 | Anthony Liguori | |
811 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISGID) {
|
812 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETGID; |
813 | bb9e3216 | Anthony Liguori | } |
814 | bb9e3216 | Anthony Liguori | |
815 | bb9e3216 | Anthony Liguori | if (stbuf->st_mode & S_ISVTX) {
|
816 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_SETVTX; |
817 | bb9e3216 | Anthony Liguori | } |
818 | bb9e3216 | Anthony Liguori | } |
819 | bb9e3216 | Anthony Liguori | |
820 | bb9e3216 | Anthony Liguori | return mode;
|
821 | bb9e3216 | Anthony Liguori | } |
822 | bb9e3216 | Anthony Liguori | |
823 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
824 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
825 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
826 | bb9e3216 | Anthony Liguori | { |
827 | bb9e3216 | Anthony Liguori | int err;
|
828 | bb9e3216 | Anthony Liguori | const char *str; |
829 | bb9e3216 | Anthony Liguori | |
830 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
831 | bb9e3216 | Anthony Liguori | |
832 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
833 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
834 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
835 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
836 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
837 | bb9e3216 | Anthony Liguori | |
838 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
839 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
840 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
841 | bb9e3216 | Anthony Liguori | |
842 | bb9e3216 | Anthony Liguori | if (dotu) {
|
843 | bb9e3216 | Anthony Liguori | v9stat->n_uid = stbuf->st_uid; |
844 | bb9e3216 | Anthony Liguori | v9stat->n_gid = stbuf->st_gid; |
845 | bb9e3216 | Anthony Liguori | v9stat->n_muid = 0;
|
846 | bb9e3216 | Anthony Liguori | |
847 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->extension); |
848 | bb9e3216 | Anthony Liguori | |
849 | bb9e3216 | Anthony Liguori | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
850 | bb9e3216 | Anthony Liguori | err = v9fs_do_readlink(s, name, &v9stat->extension); |
851 | bb9e3216 | Anthony Liguori | if (err == -1) { |
852 | bb9e3216 | Anthony Liguori | err = -errno; |
853 | bb9e3216 | Anthony Liguori | return err;
|
854 | bb9e3216 | Anthony Liguori | } |
855 | bb9e3216 | Anthony Liguori | v9stat->extension.data[err] = 0;
|
856 | bb9e3216 | Anthony Liguori | v9stat->extension.size = err; |
857 | bb9e3216 | Anthony Liguori | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
858 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
859 | bb9e3216 | Anthony Liguori | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
860 | bb9e3216 | Anthony Liguori | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
861 | bb9e3216 | Anthony Liguori | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
862 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->extension, "%s %u",
|
863 | bb9e3216 | Anthony Liguori | "HARDLINKCOUNT", stbuf->st_nlink);
|
864 | bb9e3216 | Anthony Liguori | } |
865 | bb9e3216 | Anthony Liguori | } |
866 | bb9e3216 | Anthony Liguori | |
867 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
868 | bb9e3216 | Anthony Liguori | if (str) {
|
869 | bb9e3216 | Anthony Liguori | str += 1;
|
870 | bb9e3216 | Anthony Liguori | } else {
|
871 | bb9e3216 | Anthony Liguori | str = name->data; |
872 | bb9e3216 | Anthony Liguori | } |
873 | bb9e3216 | Anthony Liguori | |
874 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
875 | bb9e3216 | Anthony Liguori | |
876 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
877 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
878 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
879 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
880 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
881 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
882 | bb9e3216 | Anthony Liguori | return 0; |
883 | bb9e3216 | Anthony Liguori | } |
884 | bb9e3216 | Anthony Liguori | |
885 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
886 | 1f5a89bf | Anthony Liguori | { |
887 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
888 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
889 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
890 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
891 | 1f5a89bf | Anthony Liguori | len = 0;
|
892 | 1f5a89bf | Anthony Liguori | } else {
|
893 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
894 | 1f5a89bf | Anthony Liguori | sg++; |
895 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
896 | 1f5a89bf | Anthony Liguori | } |
897 | 1f5a89bf | Anthony Liguori | } |
898 | 1f5a89bf | Anthony Liguori | |
899 | 1f5a89bf | Anthony Liguori | return sg;
|
900 | 1f5a89bf | Anthony Liguori | } |
901 | 1f5a89bf | Anthony Liguori | |
902 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
903 | 1f5a89bf | Anthony Liguori | { |
904 | 1f5a89bf | Anthony Liguori | int i;
|
905 | 1f5a89bf | Anthony Liguori | int total = 0; |
906 | 1f5a89bf | Anthony Liguori | |
907 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
908 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
909 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
910 | 1f5a89bf | Anthony Liguori | i++; |
911 | 1f5a89bf | Anthony Liguori | break;
|
912 | 1f5a89bf | Anthony Liguori | } |
913 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
914 | 1f5a89bf | Anthony Liguori | } |
915 | 1f5a89bf | Anthony Liguori | |
916 | 1f5a89bf | Anthony Liguori | *cnt = i; |
917 | 1f5a89bf | Anthony Liguori | |
918 | 1f5a89bf | Anthony Liguori | return sg;
|
919 | 1f5a89bf | Anthony Liguori | } |
920 | 1f5a89bf | Anthony Liguori | |
921 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
922 | 1f5a89bf | Anthony Liguori | { |
923 | 1f5a89bf | Anthony Liguori | int i;
|
924 | 1f5a89bf | Anthony Liguori | |
925 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
926 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
927 | 1f5a89bf | Anthony Liguori | if (i) {
|
928 | 1f5a89bf | Anthony Liguori | printf(", ");
|
929 | 1f5a89bf | Anthony Liguori | } |
930 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
931 | 1f5a89bf | Anthony Liguori | } |
932 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
933 | 1f5a89bf | Anthony Liguori | } |
934 | 1f5a89bf | Anthony Liguori | |
935 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
936 | 8cf89e00 | Anthony Liguori | { |
937 | 8cf89e00 | Anthony Liguori | V9fsString str; |
938 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
939 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
940 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
941 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
942 | 8cf89e00 | Anthony Liguori | } |
943 | 8cf89e00 | Anthony Liguori | |
944 | 9f107513 | Anthony Liguori | static void v9fs_version(V9fsState *s, V9fsPDU *pdu) |
945 | 9f107513 | Anthony Liguori | { |
946 | 92c1ad03 | Anthony Liguori | int32_t msize; |
947 | 92c1ad03 | Anthony Liguori | V9fsString version; |
948 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
949 | 92c1ad03 | Anthony Liguori | |
950 | 92c1ad03 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ds", &msize, &version);
|
951 | 92c1ad03 | Anthony Liguori | |
952 | 92c1ad03 | Anthony Liguori | if (strcmp(version.data, "9P2000.u")) { |
953 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
954 | 9f107513 | Anthony Liguori | } |
955 | 92c1ad03 | Anthony Liguori | |
956 | 92c1ad03 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "ds", msize, &version);
|
957 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
958 | 92c1ad03 | Anthony Liguori | |
959 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
960 | 9f107513 | Anthony Liguori | } |
961 | 9f107513 | Anthony Liguori | |
962 | 9f107513 | Anthony Liguori | static void v9fs_attach(V9fsState *s, V9fsPDU *pdu) |
963 | 9f107513 | Anthony Liguori | { |
964 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
965 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
966 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
967 | 955efc47 | Anthony Liguori | V9fsQID qid; |
968 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
969 | 955efc47 | Anthony Liguori | ssize_t err; |
970 | 955efc47 | Anthony Liguori | |
971 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
972 | 955efc47 | Anthony Liguori | |
973 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
974 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
975 | 955efc47 | Anthony Liguori | err = -EINVAL; |
976 | 955efc47 | Anthony Liguori | goto out;
|
977 | 9f107513 | Anthony Liguori | } |
978 | 955efc47 | Anthony Liguori | |
979 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
980 | 955efc47 | Anthony Liguori | |
981 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
982 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
983 | 955efc47 | Anthony Liguori | if (err) {
|
984 | 955efc47 | Anthony Liguori | err = -EINVAL; |
985 | 955efc47 | Anthony Liguori | free_fid(s, fid); |
986 | 955efc47 | Anthony Liguori | goto out;
|
987 | 955efc47 | Anthony Liguori | } |
988 | 955efc47 | Anthony Liguori | |
989 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
990 | 955efc47 | Anthony Liguori | |
991 | 955efc47 | Anthony Liguori | err = offset; |
992 | 955efc47 | Anthony Liguori | out:
|
993 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
994 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
995 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
996 | 9f107513 | Anthony Liguori | } |
997 | 9f107513 | Anthony Liguori | |
998 | 4da7d3fa | Anthony Liguori | typedef struct V9fsStatState { |
999 | 4da7d3fa | Anthony Liguori | V9fsPDU *pdu; |
1000 | 4da7d3fa | Anthony Liguori | size_t offset; |
1001 | 4da7d3fa | Anthony Liguori | V9fsStat v9stat; |
1002 | 4da7d3fa | Anthony Liguori | V9fsFidState *fidp; |
1003 | 4da7d3fa | Anthony Liguori | struct stat stbuf;
|
1004 | 4da7d3fa | Anthony Liguori | } V9fsStatState; |
1005 | 4da7d3fa | Anthony Liguori | |
1006 | 4da7d3fa | Anthony Liguori | static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err) |
1007 | 4da7d3fa | Anthony Liguori | { |
1008 | 4da7d3fa | Anthony Liguori | if (err == -1) { |
1009 | 4da7d3fa | Anthony Liguori | err = -errno; |
1010 | 4da7d3fa | Anthony Liguori | goto out;
|
1011 | 4da7d3fa | Anthony Liguori | } |
1012 | 4da7d3fa | Anthony Liguori | |
1013 | 4da7d3fa | Anthony Liguori | err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat); |
1014 | 4da7d3fa | Anthony Liguori | if (err) {
|
1015 | 4da7d3fa | Anthony Liguori | goto out;
|
1016 | 4da7d3fa | Anthony Liguori | } |
1017 | 4da7d3fa | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat); |
1018 | 4da7d3fa | Anthony Liguori | err = vs->offset; |
1019 | 4da7d3fa | Anthony Liguori | |
1020 | 4da7d3fa | Anthony Liguori | out:
|
1021 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1022 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1023 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1024 | 4da7d3fa | Anthony Liguori | } |
1025 | 4da7d3fa | Anthony Liguori | |
1026 | 9f107513 | Anthony Liguori | static void v9fs_stat(V9fsState *s, V9fsPDU *pdu) |
1027 | 9f107513 | Anthony Liguori | { |
1028 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1029 | 4da7d3fa | Anthony Liguori | V9fsStatState *vs; |
1030 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1031 | 4da7d3fa | Anthony Liguori | |
1032 | 4da7d3fa | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1033 | 4da7d3fa | Anthony Liguori | vs->pdu = pdu; |
1034 | 4da7d3fa | Anthony Liguori | vs->offset = 7;
|
1035 | 4da7d3fa | Anthony Liguori | |
1036 | 4da7d3fa | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1037 | 4da7d3fa | Anthony Liguori | |
1038 | 4da7d3fa | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1039 | 4da7d3fa | Anthony Liguori | |
1040 | 4da7d3fa | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1041 | 4da7d3fa | Anthony Liguori | if (vs->fidp == NULL) { |
1042 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1043 | 4da7d3fa | Anthony Liguori | goto out;
|
1044 | 9f107513 | Anthony Liguori | } |
1045 | 4da7d3fa | Anthony Liguori | |
1046 | 4da7d3fa | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1047 | 4da7d3fa | Anthony Liguori | v9fs_stat_post_lstat(s, vs, err); |
1048 | 4da7d3fa | Anthony Liguori | return;
|
1049 | 4da7d3fa | Anthony Liguori | |
1050 | 4da7d3fa | Anthony Liguori | out:
|
1051 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1052 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1053 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1054 | 9f107513 | Anthony Liguori | } |
1055 | 9f107513 | Anthony Liguori | |
1056 | ff5e54c9 | Anthony Liguori | typedef struct V9fsWalkState { |
1057 | ff5e54c9 | Anthony Liguori | V9fsPDU *pdu; |
1058 | ff5e54c9 | Anthony Liguori | size_t offset; |
1059 | ff5e54c9 | Anthony Liguori | int16_t nwnames; |
1060 | ff5e54c9 | Anthony Liguori | int name_idx;
|
1061 | ff5e54c9 | Anthony Liguori | V9fsQID *qids; |
1062 | ff5e54c9 | Anthony Liguori | V9fsFidState *fidp; |
1063 | ff5e54c9 | Anthony Liguori | V9fsFidState *newfidp; |
1064 | ff5e54c9 | Anthony Liguori | V9fsString path; |
1065 | ff5e54c9 | Anthony Liguori | V9fsString *wnames; |
1066 | ff5e54c9 | Anthony Liguori | struct stat stbuf;
|
1067 | ff5e54c9 | Anthony Liguori | } V9fsWalkState; |
1068 | ff5e54c9 | Anthony Liguori | |
1069 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_complete(V9fsState *s, V9fsWalkState *vs, int err) |
1070 | ff5e54c9 | Anthony Liguori | { |
1071 | ff5e54c9 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1072 | ff5e54c9 | Anthony Liguori | |
1073 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1074 | ff5e54c9 | Anthony Liguori | for (vs->name_idx = 0; vs->name_idx < vs->nwnames; vs->name_idx++) { |
1075 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->wnames[vs->name_idx]); |
1076 | ff5e54c9 | Anthony Liguori | } |
1077 | ff5e54c9 | Anthony Liguori | |
1078 | ff5e54c9 | Anthony Liguori | qemu_free(vs->wnames); |
1079 | ff5e54c9 | Anthony Liguori | qemu_free(vs->qids); |
1080 | ff5e54c9 | Anthony Liguori | } |
1081 | ff5e54c9 | Anthony Liguori | } |
1082 | ff5e54c9 | Anthony Liguori | |
1083 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_marshal(V9fsWalkState *vs) |
1084 | ff5e54c9 | Anthony Liguori | { |
1085 | ff5e54c9 | Anthony Liguori | int i;
|
1086 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1087 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "w", vs->nwnames);
|
1088 | ff5e54c9 | Anthony Liguori | |
1089 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1090 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qids[i]);
|
1091 | ff5e54c9 | Anthony Liguori | } |
1092 | ff5e54c9 | Anthony Liguori | } |
1093 | ff5e54c9 | Anthony Liguori | |
1094 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_newfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1095 | ff5e54c9 | Anthony Liguori | int err)
|
1096 | ff5e54c9 | Anthony Liguori | { |
1097 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1098 | ff5e54c9 | Anthony Liguori | free_fid(s, vs->newfidp->fid); |
1099 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1100 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1101 | ff5e54c9 | Anthony Liguori | goto out;
|
1102 | ff5e54c9 | Anthony Liguori | } |
1103 | ff5e54c9 | Anthony Liguori | |
1104 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1105 | ff5e54c9 | Anthony Liguori | |
1106 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1107 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1108 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1109 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1110 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1111 | ff5e54c9 | Anthony Liguori | |
1112 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1113 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1114 | ff5e54c9 | Anthony Liguori | return;
|
1115 | ff5e54c9 | Anthony Liguori | } |
1116 | ff5e54c9 | Anthony Liguori | |
1117 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1118 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1119 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1120 | ff5e54c9 | Anthony Liguori | out:
|
1121 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1122 | ff5e54c9 | Anthony Liguori | } |
1123 | ff5e54c9 | Anthony Liguori | |
1124 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_oldfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1125 | ff5e54c9 | Anthony Liguori | int err)
|
1126 | ff5e54c9 | Anthony Liguori | { |
1127 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1128 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1129 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1130 | ff5e54c9 | Anthony Liguori | goto out;
|
1131 | ff5e54c9 | Anthony Liguori | } |
1132 | ff5e54c9 | Anthony Liguori | |
1133 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1134 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1135 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1136 | ff5e54c9 | Anthony Liguori | |
1137 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1138 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1139 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1140 | ff5e54c9 | Anthony Liguori | |
1141 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1142 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1143 | ff5e54c9 | Anthony Liguori | return;
|
1144 | ff5e54c9 | Anthony Liguori | } |
1145 | ff5e54c9 | Anthony Liguori | |
1146 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1147 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1148 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1149 | ff5e54c9 | Anthony Liguori | out:
|
1150 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1151 | ff5e54c9 | Anthony Liguori | } |
1152 | ff5e54c9 | Anthony Liguori | |
1153 | 9f107513 | Anthony Liguori | static void v9fs_walk(V9fsState *s, V9fsPDU *pdu) |
1154 | 9f107513 | Anthony Liguori | { |
1155 | ff5e54c9 | Anthony Liguori | int32_t fid, newfid; |
1156 | ff5e54c9 | Anthony Liguori | V9fsWalkState *vs; |
1157 | ff5e54c9 | Anthony Liguori | int err = 0; |
1158 | ff5e54c9 | Anthony Liguori | int i;
|
1159 | ff5e54c9 | Anthony Liguori | |
1160 | ff5e54c9 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1161 | ff5e54c9 | Anthony Liguori | vs->pdu = pdu; |
1162 | ff5e54c9 | Anthony Liguori | vs->wnames = NULL;
|
1163 | ff5e54c9 | Anthony Liguori | vs->qids = NULL;
|
1164 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1165 | ff5e54c9 | Anthony Liguori | |
1166 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "ddw", &fid,
|
1167 | ff5e54c9 | Anthony Liguori | &newfid, &vs->nwnames); |
1168 | ff5e54c9 | Anthony Liguori | |
1169 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1170 | ff5e54c9 | Anthony Liguori | vs->wnames = qemu_mallocz(sizeof(vs->wnames[0]) * vs->nwnames); |
1171 | ff5e54c9 | Anthony Liguori | |
1172 | ff5e54c9 | Anthony Liguori | vs->qids = qemu_mallocz(sizeof(vs->qids[0]) * vs->nwnames); |
1173 | ff5e54c9 | Anthony Liguori | |
1174 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1175 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "s",
|
1176 | ff5e54c9 | Anthony Liguori | &vs->wnames[i]); |
1177 | ff5e54c9 | Anthony Liguori | } |
1178 | ff5e54c9 | Anthony Liguori | } |
1179 | ff5e54c9 | Anthony Liguori | |
1180 | ff5e54c9 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1181 | ff5e54c9 | Anthony Liguori | if (vs->fidp == NULL) { |
1182 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1183 | ff5e54c9 | Anthony Liguori | goto out;
|
1184 | ff5e54c9 | Anthony Liguori | } |
1185 | ff5e54c9 | Anthony Liguori | |
1186 | ff5e54c9 | Anthony Liguori | /* FIXME: is this really valid? */
|
1187 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1188 | ff5e54c9 | Anthony Liguori | |
1189 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1190 | ff5e54c9 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1191 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1192 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1193 | ff5e54c9 | Anthony Liguori | |
1194 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1195 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1196 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1197 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1198 | ff5e54c9 | Anthony Liguori | |
1199 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1200 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1201 | ff5e54c9 | Anthony Liguori | return;
|
1202 | ff5e54c9 | Anthony Liguori | } |
1203 | ff5e54c9 | Anthony Liguori | } else {
|
1204 | ff5e54c9 | Anthony Liguori | vs->newfidp = alloc_fid(s, newfid); |
1205 | ff5e54c9 | Anthony Liguori | if (vs->newfidp == NULL) { |
1206 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1207 | ff5e54c9 | Anthony Liguori | goto out;
|
1208 | ff5e54c9 | Anthony Liguori | } |
1209 | ff5e54c9 | Anthony Liguori | |
1210 | ff5e54c9 | Anthony Liguori | vs->newfidp->uid = vs->fidp->uid; |
1211 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1212 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1213 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->fidp->path); |
1214 | ff5e54c9 | Anthony Liguori | |
1215 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1216 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1217 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1218 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1219 | ff5e54c9 | Anthony Liguori | |
1220 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1221 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1222 | ff5e54c9 | Anthony Liguori | return;
|
1223 | ff5e54c9 | Anthony Liguori | } |
1224 | 9f107513 | Anthony Liguori | } |
1225 | ff5e54c9 | Anthony Liguori | |
1226 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1227 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1228 | ff5e54c9 | Anthony Liguori | out:
|
1229 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1230 | 9f107513 | Anthony Liguori | } |
1231 | 9f107513 | Anthony Liguori | |
1232 | a6568fe2 | Anthony Liguori | typedef struct V9fsOpenState { |
1233 | a6568fe2 | Anthony Liguori | V9fsPDU *pdu; |
1234 | a6568fe2 | Anthony Liguori | size_t offset; |
1235 | a6568fe2 | Anthony Liguori | int8_t mode; |
1236 | a6568fe2 | Anthony Liguori | V9fsFidState *fidp; |
1237 | a6568fe2 | Anthony Liguori | V9fsQID qid; |
1238 | a6568fe2 | Anthony Liguori | struct stat stbuf;
|
1239 | a6568fe2 | Anthony Liguori | |
1240 | a6568fe2 | Anthony Liguori | } V9fsOpenState; |
1241 | a6568fe2 | Anthony Liguori | |
1242 | a6568fe2 | Anthony Liguori | enum {
|
1243 | a6568fe2 | Anthony Liguori | Oread = 0x00,
|
1244 | a6568fe2 | Anthony Liguori | Owrite = 0x01,
|
1245 | a6568fe2 | Anthony Liguori | Ordwr = 0x02,
|
1246 | a6568fe2 | Anthony Liguori | Oexec = 0x03,
|
1247 | a6568fe2 | Anthony Liguori | Oexcl = 0x04,
|
1248 | a6568fe2 | Anthony Liguori | Otrunc = 0x10,
|
1249 | a6568fe2 | Anthony Liguori | Orexec = 0x20,
|
1250 | a6568fe2 | Anthony Liguori | Orclose = 0x40,
|
1251 | a6568fe2 | Anthony Liguori | Oappend = 0x80,
|
1252 | a6568fe2 | Anthony Liguori | }; |
1253 | a6568fe2 | Anthony Liguori | |
1254 | a6568fe2 | Anthony Liguori | static int omode_to_uflags(int8_t mode) |
1255 | 9f107513 | Anthony Liguori | { |
1256 | a6568fe2 | Anthony Liguori | int ret = 0; |
1257 | a6568fe2 | Anthony Liguori | |
1258 | a6568fe2 | Anthony Liguori | switch (mode & 3) { |
1259 | a6568fe2 | Anthony Liguori | case Oread:
|
1260 | a6568fe2 | Anthony Liguori | ret = O_RDONLY; |
1261 | a6568fe2 | Anthony Liguori | break;
|
1262 | a6568fe2 | Anthony Liguori | case Ordwr:
|
1263 | a6568fe2 | Anthony Liguori | ret = O_RDWR; |
1264 | a6568fe2 | Anthony Liguori | break;
|
1265 | a6568fe2 | Anthony Liguori | case Owrite:
|
1266 | a6568fe2 | Anthony Liguori | ret = O_WRONLY; |
1267 | a6568fe2 | Anthony Liguori | break;
|
1268 | a6568fe2 | Anthony Liguori | case Oexec:
|
1269 | a6568fe2 | Anthony Liguori | ret = O_RDONLY; |
1270 | a6568fe2 | Anthony Liguori | break;
|
1271 | a6568fe2 | Anthony Liguori | } |
1272 | a6568fe2 | Anthony Liguori | |
1273 | a6568fe2 | Anthony Liguori | if (mode & Otrunc) {
|
1274 | a6568fe2 | Anthony Liguori | ret |= O_TRUNC; |
1275 | a6568fe2 | Anthony Liguori | } |
1276 | a6568fe2 | Anthony Liguori | |
1277 | a6568fe2 | Anthony Liguori | if (mode & Oappend) {
|
1278 | a6568fe2 | Anthony Liguori | ret |= O_APPEND; |
1279 | 9f107513 | Anthony Liguori | } |
1280 | a6568fe2 | Anthony Liguori | |
1281 | a6568fe2 | Anthony Liguori | if (mode & Oexcl) {
|
1282 | a6568fe2 | Anthony Liguori | ret |= O_EXCL; |
1283 | a6568fe2 | Anthony Liguori | } |
1284 | a6568fe2 | Anthony Liguori | |
1285 | a6568fe2 | Anthony Liguori | return ret;
|
1286 | a6568fe2 | Anthony Liguori | } |
1287 | a6568fe2 | Anthony Liguori | |
1288 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_opendir(V9fsState *s, V9fsOpenState *vs, int err) |
1289 | a6568fe2 | Anthony Liguori | { |
1290 | a6568fe2 | Anthony Liguori | if (vs->fidp->dir == NULL) { |
1291 | a6568fe2 | Anthony Liguori | err = -errno; |
1292 | a6568fe2 | Anthony Liguori | goto out;
|
1293 | a6568fe2 | Anthony Liguori | } |
1294 | a6568fe2 | Anthony Liguori | |
1295 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1296 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1297 | a6568fe2 | Anthony Liguori | out:
|
1298 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1299 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1300 | a6568fe2 | Anthony Liguori | |
1301 | a6568fe2 | Anthony Liguori | } |
1302 | a6568fe2 | Anthony Liguori | |
1303 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_open(V9fsState *s, V9fsOpenState *vs, int err) |
1304 | a6568fe2 | Anthony Liguori | { |
1305 | a6568fe2 | Anthony Liguori | if (vs->fidp->fd == -1) { |
1306 | a6568fe2 | Anthony Liguori | err = -errno; |
1307 | a6568fe2 | Anthony Liguori | goto out;
|
1308 | a6568fe2 | Anthony Liguori | } |
1309 | a6568fe2 | Anthony Liguori | |
1310 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1311 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1312 | a6568fe2 | Anthony Liguori | out:
|
1313 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1314 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1315 | a6568fe2 | Anthony Liguori | } |
1316 | a6568fe2 | Anthony Liguori | |
1317 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) |
1318 | a6568fe2 | Anthony Liguori | { |
1319 | a6568fe2 | Anthony Liguori | if (err) {
|
1320 | a6568fe2 | Anthony Liguori | err = -errno; |
1321 | a6568fe2 | Anthony Liguori | goto out;
|
1322 | a6568fe2 | Anthony Liguori | } |
1323 | a6568fe2 | Anthony Liguori | |
1324 | a6568fe2 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1325 | a6568fe2 | Anthony Liguori | |
1326 | a6568fe2 | Anthony Liguori | if (S_ISDIR(vs->stbuf.st_mode)) {
|
1327 | a6568fe2 | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fidp->path); |
1328 | a6568fe2 | Anthony Liguori | v9fs_open_post_opendir(s, vs, err); |
1329 | a6568fe2 | Anthony Liguori | } else {
|
1330 | a6568fe2 | Anthony Liguori | vs->fidp->fd = v9fs_do_open(s, &vs->fidp->path, |
1331 | a6568fe2 | Anthony Liguori | omode_to_uflags(vs->mode)); |
1332 | a6568fe2 | Anthony Liguori | v9fs_open_post_open(s, vs, err); |
1333 | a6568fe2 | Anthony Liguori | } |
1334 | a6568fe2 | Anthony Liguori | return;
|
1335 | a6568fe2 | Anthony Liguori | out:
|
1336 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1337 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1338 | 9f107513 | Anthony Liguori | } |
1339 | 9f107513 | Anthony Liguori | |
1340 | 9f107513 | Anthony Liguori | static void v9fs_open(V9fsState *s, V9fsPDU *pdu) |
1341 | a6568fe2 | Anthony Liguori | { |
1342 | a6568fe2 | Anthony Liguori | int32_t fid; |
1343 | a6568fe2 | Anthony Liguori | V9fsOpenState *vs; |
1344 | a6568fe2 | Anthony Liguori | ssize_t err = 0;
|
1345 | a6568fe2 | Anthony Liguori | |
1346 | a6568fe2 | Anthony Liguori | |
1347 | a6568fe2 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1348 | a6568fe2 | Anthony Liguori | vs->pdu = pdu; |
1349 | a6568fe2 | Anthony Liguori | vs->offset = 7;
|
1350 | a6568fe2 | Anthony Liguori | |
1351 | a6568fe2 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "db", &fid, &vs->mode);
|
1352 | a6568fe2 | Anthony Liguori | |
1353 | a6568fe2 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1354 | a6568fe2 | Anthony Liguori | if (vs->fidp == NULL) { |
1355 | a6568fe2 | Anthony Liguori | err = -ENOENT; |
1356 | a6568fe2 | Anthony Liguori | goto out;
|
1357 | a6568fe2 | Anthony Liguori | } |
1358 | a6568fe2 | Anthony Liguori | |
1359 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->fd != -1);
|
1360 | a6568fe2 | Anthony Liguori | BUG_ON(vs->fidp->dir); |
1361 | a6568fe2 | Anthony Liguori | |
1362 | a6568fe2 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1363 | a6568fe2 | Anthony Liguori | |
1364 | a6568fe2 | Anthony Liguori | v9fs_open_post_lstat(s, vs, err); |
1365 | a6568fe2 | Anthony Liguori | return;
|
1366 | a6568fe2 | Anthony Liguori | out:
|
1367 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1368 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1369 | a6568fe2 | Anthony Liguori | } |
1370 | a6568fe2 | Anthony Liguori | |
1371 | a6568fe2 | Anthony Liguori | static void v9fs_clunk(V9fsState *s, V9fsPDU *pdu) |
1372 | a6568fe2 | Anthony Liguori | { |
1373 | bbd5697b | Anthony Liguori | int32_t fid; |
1374 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1375 | bbd5697b | Anthony Liguori | int err;
|
1376 | bbd5697b | Anthony Liguori | |
1377 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1378 | bbd5697b | Anthony Liguori | |
1379 | bbd5697b | Anthony Liguori | err = free_fid(s, fid); |
1380 | bbd5697b | Anthony Liguori | if (err < 0) { |
1381 | bbd5697b | Anthony Liguori | goto out;
|
1382 | a6568fe2 | Anthony Liguori | } |
1383 | bbd5697b | Anthony Liguori | |
1384 | bbd5697b | Anthony Liguori | offset = 7;
|
1385 | bbd5697b | Anthony Liguori | err = offset; |
1386 | bbd5697b | Anthony Liguori | out:
|
1387 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1388 | 9f107513 | Anthony Liguori | } |
1389 | 9f107513 | Anthony Liguori | |
1390 | a9231555 | Anthony Liguori | typedef struct V9fsReadState { |
1391 | a9231555 | Anthony Liguori | V9fsPDU *pdu; |
1392 | a9231555 | Anthony Liguori | size_t offset; |
1393 | a9231555 | Anthony Liguori | int32_t count; |
1394 | a9231555 | Anthony Liguori | int32_t total; |
1395 | a9231555 | Anthony Liguori | int64_t off; |
1396 | a9231555 | Anthony Liguori | V9fsFidState *fidp; |
1397 | a9231555 | Anthony Liguori | struct iovec iov[128]; /* FIXME: bad, bad, bad */ |
1398 | a9231555 | Anthony Liguori | struct iovec *sg;
|
1399 | a9231555 | Anthony Liguori | off_t dir_pos; |
1400 | a9231555 | Anthony Liguori | struct dirent *dent;
|
1401 | a9231555 | Anthony Liguori | struct stat stbuf;
|
1402 | a9231555 | Anthony Liguori | V9fsString name; |
1403 | a9231555 | Anthony Liguori | V9fsStat v9stat; |
1404 | a9231555 | Anthony Liguori | int32_t len; |
1405 | a9231555 | Anthony Liguori | int32_t cnt; |
1406 | a9231555 | Anthony Liguori | int32_t max_count; |
1407 | a9231555 | Anthony Liguori | } V9fsReadState; |
1408 | a9231555 | Anthony Liguori | |
1409 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *, V9fsReadState *, ssize_t); |
1410 | a9231555 | Anthony Liguori | |
1411 | a9231555 | Anthony Liguori | static void v9fs_read_post_seekdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1412 | a9231555 | Anthony Liguori | { |
1413 | a9231555 | Anthony Liguori | if (err) {
|
1414 | a9231555 | Anthony Liguori | goto out;
|
1415 | a9231555 | Anthony Liguori | } |
1416 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1417 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1418 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1419 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1420 | a9231555 | Anthony Liguori | err = vs->offset; |
1421 | a9231555 | Anthony Liguori | out:
|
1422 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1423 | a9231555 | Anthony Liguori | qemu_free(vs); |
1424 | a9231555 | Anthony Liguori | return;
|
1425 | a9231555 | Anthony Liguori | } |
1426 | a9231555 | Anthony Liguori | |
1427 | a9231555 | Anthony Liguori | static void v9fs_read_post_dir_lstat(V9fsState *s, V9fsReadState *vs, |
1428 | a9231555 | Anthony Liguori | ssize_t err) |
1429 | a9231555 | Anthony Liguori | { |
1430 | a9231555 | Anthony Liguori | if (err) {
|
1431 | a9231555 | Anthony Liguori | err = -errno; |
1432 | a9231555 | Anthony Liguori | goto out;
|
1433 | a9231555 | Anthony Liguori | } |
1434 | a9231555 | Anthony Liguori | err = stat_to_v9stat(s, &vs->name, &vs->stbuf, &vs->v9stat); |
1435 | a9231555 | Anthony Liguori | if (err) {
|
1436 | a9231555 | Anthony Liguori | goto out;
|
1437 | a9231555 | Anthony Liguori | } |
1438 | a9231555 | Anthony Liguori | |
1439 | a9231555 | Anthony Liguori | vs->len = pdu_marshal(vs->pdu, vs->offset + 4 + vs->count, "S", |
1440 | a9231555 | Anthony Liguori | &vs->v9stat); |
1441 | a9231555 | Anthony Liguori | if ((vs->len != (vs->v9stat.size + 2)) || |
1442 | a9231555 | Anthony Liguori | ((vs->count + vs->len) > vs->max_count)) { |
1443 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1444 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1445 | a9231555 | Anthony Liguori | return;
|
1446 | a9231555 | Anthony Liguori | } |
1447 | a9231555 | Anthony Liguori | vs->count += vs->len; |
1448 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1449 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1450 | a9231555 | Anthony Liguori | vs->dir_pos = vs->dent->d_off; |
1451 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1452 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1453 | a9231555 | Anthony Liguori | return;
|
1454 | a9231555 | Anthony Liguori | out:
|
1455 | a9231555 | Anthony Liguori | v9fs_do_seekdir(s, vs->fidp->dir, vs->dir_pos); |
1456 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1457 | a9231555 | Anthony Liguori | return;
|
1458 | a9231555 | Anthony Liguori | |
1459 | a9231555 | Anthony Liguori | } |
1460 | a9231555 | Anthony Liguori | |
1461 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1462 | a9231555 | Anthony Liguori | { |
1463 | a9231555 | Anthony Liguori | if (vs->dent) {
|
1464 | a9231555 | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1465 | a9231555 | Anthony Liguori | v9fs_string_init(&vs->name); |
1466 | a9231555 | Anthony Liguori | v9fs_string_sprintf(&vs->name, "%s/%s", vs->fidp->path.data,
|
1467 | a9231555 | Anthony Liguori | vs->dent->d_name); |
1468 | a9231555 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->name, &vs->stbuf); |
1469 | a9231555 | Anthony Liguori | v9fs_read_post_dir_lstat(s, vs, err); |
1470 | a9231555 | Anthony Liguori | return;
|
1471 | a9231555 | Anthony Liguori | } |
1472 | a9231555 | Anthony Liguori | |
1473 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1474 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1475 | a9231555 | Anthony Liguori | err = vs->offset; |
1476 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1477 | a9231555 | Anthony Liguori | qemu_free(vs); |
1478 | a9231555 | Anthony Liguori | return;
|
1479 | a9231555 | Anthony Liguori | } |
1480 | a9231555 | Anthony Liguori | |
1481 | a9231555 | Anthony Liguori | static void v9fs_read_post_telldir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1482 | a9231555 | Anthony Liguori | { |
1483 | a9231555 | Anthony Liguori | vs->dent = v9fs_do_readdir(s, vs->fidp->dir); |
1484 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1485 | a9231555 | Anthony Liguori | return;
|
1486 | a9231555 | Anthony Liguori | } |
1487 | a9231555 | Anthony Liguori | |
1488 | a9231555 | Anthony Liguori | static void v9fs_read_post_rewinddir(V9fsState *s, V9fsReadState *vs, |
1489 | a9231555 | Anthony Liguori | ssize_t err) |
1490 | a9231555 | Anthony Liguori | { |
1491 | a9231555 | Anthony Liguori | vs->dir_pos = v9fs_do_telldir(s, vs->fidp->dir); |
1492 | a9231555 | Anthony Liguori | v9fs_read_post_telldir(s, vs, err); |
1493 | a9231555 | Anthony Liguori | return;
|
1494 | a9231555 | Anthony Liguori | } |
1495 | a9231555 | Anthony Liguori | |
1496 | a9231555 | Anthony Liguori | static void v9fs_read_post_readv(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1497 | a9231555 | Anthony Liguori | { |
1498 | a9231555 | Anthony Liguori | if (err < 0) { |
1499 | a9231555 | Anthony Liguori | /* IO error return the error */
|
1500 | a9231555 | Anthony Liguori | err = -errno; |
1501 | a9231555 | Anthony Liguori | goto out;
|
1502 | a9231555 | Anthony Liguori | } |
1503 | a9231555 | Anthony Liguori | vs->total += vs->len; |
1504 | a9231555 | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1505 | a9231555 | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1506 | a9231555 | Anthony Liguori | do {
|
1507 | a9231555 | Anthony Liguori | if (0) { |
1508 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1509 | a9231555 | Anthony Liguori | } |
1510 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1511 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1512 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1513 | a9231555 | Anthony Liguori | err = -errno; |
1514 | a9231555 | Anthony Liguori | } |
1515 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1516 | a9231555 | Anthony Liguori | return;
|
1517 | a9231555 | Anthony Liguori | } |
1518 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1519 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1520 | a9231555 | Anthony Liguori | err = vs->offset; |
1521 | a9231555 | Anthony Liguori | |
1522 | a9231555 | Anthony Liguori | out:
|
1523 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1524 | a9231555 | Anthony Liguori | qemu_free(vs); |
1525 | a9231555 | Anthony Liguori | } |
1526 | a9231555 | Anthony Liguori | |
1527 | a9231555 | Anthony Liguori | static void v9fs_read_post_lseek(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1528 | a9231555 | Anthony Liguori | { |
1529 | a9231555 | Anthony Liguori | if (err == -1) { |
1530 | a9231555 | Anthony Liguori | err = -errno; |
1531 | a9231555 | Anthony Liguori | goto out;
|
1532 | a9231555 | Anthony Liguori | } |
1533 | a9231555 | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1534 | a9231555 | Anthony Liguori | |
1535 | a9231555 | Anthony Liguori | if (vs->total < vs->count) {
|
1536 | a9231555 | Anthony Liguori | do {
|
1537 | a9231555 | Anthony Liguori | if (0) { |
1538 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1539 | a9231555 | Anthony Liguori | } |
1540 | a9231555 | Anthony Liguori | vs->len = v9fs_do_readv(s, vs->fidp->fd, vs->sg, vs->cnt); |
1541 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1542 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
1543 | a9231555 | Anthony Liguori | err = -errno; |
1544 | a9231555 | Anthony Liguori | } |
1545 | a9231555 | Anthony Liguori | v9fs_read_post_readv(s, vs, err); |
1546 | a9231555 | Anthony Liguori | return;
|
1547 | a9231555 | Anthony Liguori | } |
1548 | a9231555 | Anthony Liguori | out:
|
1549 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1550 | a9231555 | Anthony Liguori | qemu_free(vs); |
1551 | a9231555 | Anthony Liguori | } |
1552 | a9231555 | Anthony Liguori | |
1553 | 9f107513 | Anthony Liguori | static void v9fs_read(V9fsState *s, V9fsPDU *pdu) |
1554 | 9f107513 | Anthony Liguori | { |
1555 | a9231555 | Anthony Liguori | int32_t fid; |
1556 | a9231555 | Anthony Liguori | V9fsReadState *vs; |
1557 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
1558 | a9231555 | Anthony Liguori | |
1559 | a9231555 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1560 | a9231555 | Anthony Liguori | vs->pdu = pdu; |
1561 | a9231555 | Anthony Liguori | vs->offset = 7;
|
1562 | a9231555 | Anthony Liguori | vs->total = 0;
|
1563 | a9231555 | Anthony Liguori | vs->len = 0;
|
1564 | a9231555 | Anthony Liguori | vs->count = 0;
|
1565 | a9231555 | Anthony Liguori | |
1566 | a9231555 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqd", &fid, &vs->off, &vs->count);
|
1567 | a9231555 | Anthony Liguori | |
1568 | a9231555 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1569 | a9231555 | Anthony Liguori | if (vs->fidp == NULL) { |
1570 | a9231555 | Anthony Liguori | err = -EINVAL; |
1571 | a9231555 | Anthony Liguori | goto out;
|
1572 | a9231555 | Anthony Liguori | } |
1573 | a9231555 | Anthony Liguori | |
1574 | a9231555 | Anthony Liguori | if (vs->fidp->dir) {
|
1575 | a9231555 | Anthony Liguori | vs->max_count = vs->count; |
1576 | a9231555 | Anthony Liguori | vs->count = 0;
|
1577 | a9231555 | Anthony Liguori | if (vs->off == 0) { |
1578 | a9231555 | Anthony Liguori | v9fs_do_rewinddir(s, vs->fidp->dir); |
1579 | a9231555 | Anthony Liguori | } |
1580 | a9231555 | Anthony Liguori | v9fs_read_post_rewinddir(s, vs, err); |
1581 | a9231555 | Anthony Liguori | return;
|
1582 | a9231555 | Anthony Liguori | } else if (vs->fidp->fd != -1) { |
1583 | a9231555 | Anthony Liguori | vs->sg = vs->iov; |
1584 | a9231555 | Anthony Liguori | pdu_marshal(vs->pdu, vs->offset + 4, "v", vs->sg, &vs->cnt); |
1585 | a9231555 | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
1586 | a9231555 | Anthony Liguori | v9fs_read_post_lseek(s, vs, err); |
1587 | a9231555 | Anthony Liguori | return;
|
1588 | a9231555 | Anthony Liguori | } else {
|
1589 | a9231555 | Anthony Liguori | err = -EINVAL; |
1590 | 9f107513 | Anthony Liguori | } |
1591 | a9231555 | Anthony Liguori | out:
|
1592 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
1593 | a9231555 | Anthony Liguori | qemu_free(vs); |
1594 | 9f107513 | Anthony Liguori | } |
1595 | 9f107513 | Anthony Liguori | |
1596 | 8449360c | Anthony Liguori | typedef struct V9fsWriteState { |
1597 | 8449360c | Anthony Liguori | V9fsPDU *pdu; |
1598 | 8449360c | Anthony Liguori | size_t offset; |
1599 | 8449360c | Anthony Liguori | int32_t len; |
1600 | 8449360c | Anthony Liguori | int32_t count; |
1601 | 8449360c | Anthony Liguori | int32_t total; |
1602 | 8449360c | Anthony Liguori | int64_t off; |
1603 | 8449360c | Anthony Liguori | V9fsFidState *fidp; |
1604 | 8449360c | Anthony Liguori | struct iovec iov[128]; /* FIXME: bad, bad, bad */ |
1605 | 8449360c | Anthony Liguori | struct iovec *sg;
|
1606 | 8449360c | Anthony Liguori | int cnt;
|
1607 | 8449360c | Anthony Liguori | } V9fsWriteState; |
1608 | 8449360c | Anthony Liguori | |
1609 | 8449360c | Anthony Liguori | static void v9fs_write_post_writev(V9fsState *s, V9fsWriteState *vs, |
1610 | 8449360c | Anthony Liguori | ssize_t err) |
1611 | 8449360c | Anthony Liguori | { |
1612 | 8449360c | Anthony Liguori | if (err < 0) { |
1613 | 8449360c | Anthony Liguori | /* IO error return the error */
|
1614 | 8449360c | Anthony Liguori | err = -errno; |
1615 | 8449360c | Anthony Liguori | goto out;
|
1616 | 8449360c | Anthony Liguori | } |
1617 | 8449360c | Anthony Liguori | vs->total += vs->len; |
1618 | 8449360c | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
1619 | 8449360c | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
1620 | 8449360c | Anthony Liguori | do {
|
1621 | 8449360c | Anthony Liguori | if (0) { |
1622 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1623 | 8449360c | Anthony Liguori | } |
1624 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
1625 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1626 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
1627 | 8449360c | Anthony Liguori | err = -errno; |
1628 | 8449360c | Anthony Liguori | } |
1629 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
1630 | 8449360c | Anthony Liguori | return;
|
1631 | 8449360c | Anthony Liguori | } |
1632 | 8449360c | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
1633 | 8449360c | Anthony Liguori | |
1634 | 8449360c | Anthony Liguori | err = vs->offset; |
1635 | 8449360c | Anthony Liguori | out:
|
1636 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1637 | 8449360c | Anthony Liguori | qemu_free(vs); |
1638 | 8449360c | Anthony Liguori | } |
1639 | 8449360c | Anthony Liguori | |
1640 | 8449360c | Anthony Liguori | static void v9fs_write_post_lseek(V9fsState *s, V9fsWriteState *vs, ssize_t err) |
1641 | 8449360c | Anthony Liguori | { |
1642 | 8449360c | Anthony Liguori | if (err == -1) { |
1643 | 8449360c | Anthony Liguori | err = -errno; |
1644 | 8449360c | Anthony Liguori | goto out;
|
1645 | 8449360c | Anthony Liguori | } |
1646 | 8449360c | Anthony Liguori | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
1647 | 8449360c | Anthony Liguori | |
1648 | 8449360c | Anthony Liguori | if (vs->total < vs->count) {
|
1649 | 8449360c | Anthony Liguori | do {
|
1650 | 8449360c | Anthony Liguori | if (0) { |
1651 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
1652 | 8449360c | Anthony Liguori | } |
1653 | 8449360c | Anthony Liguori | vs->len = v9fs_do_writev(s, vs->fidp->fd, vs->sg, vs->cnt); |
1654 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
1655 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
1656 | 8449360c | Anthony Liguori | err = -errno; |
1657 | 8449360c | Anthony Liguori | } |
1658 | 8449360c | Anthony Liguori | v9fs_write_post_writev(s, vs, err); |
1659 | 8449360c | Anthony Liguori | return;
|
1660 | 8449360c | Anthony Liguori | } |
1661 | 8449360c | Anthony Liguori | |
1662 | 8449360c | Anthony Liguori | out:
|
1663 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1664 | 8449360c | Anthony Liguori | qemu_free(vs); |
1665 | 8449360c | Anthony Liguori | } |
1666 | 8449360c | Anthony Liguori | |
1667 | 9f107513 | Anthony Liguori | static void v9fs_write(V9fsState *s, V9fsPDU *pdu) |
1668 | 9f107513 | Anthony Liguori | { |
1669 | 8449360c | Anthony Liguori | int32_t fid; |
1670 | 8449360c | Anthony Liguori | V9fsWriteState *vs; |
1671 | 8449360c | Anthony Liguori | ssize_t err; |
1672 | 8449360c | Anthony Liguori | |
1673 | 8449360c | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1674 | 8449360c | Anthony Liguori | |
1675 | 8449360c | Anthony Liguori | vs->pdu = pdu; |
1676 | 8449360c | Anthony Liguori | vs->offset = 7;
|
1677 | 8449360c | Anthony Liguori | vs->sg = vs->iov; |
1678 | 8449360c | Anthony Liguori | vs->total = 0;
|
1679 | 8449360c | Anthony Liguori | vs->len = 0;
|
1680 | 8449360c | Anthony Liguori | |
1681 | 8449360c | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqdv", &fid, &vs->off, &vs->count,
|
1682 | 8449360c | Anthony Liguori | vs->sg, &vs->cnt); |
1683 | 8449360c | Anthony Liguori | |
1684 | 8449360c | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1685 | 8449360c | Anthony Liguori | if (vs->fidp == NULL) { |
1686 | 8449360c | Anthony Liguori | err = -EINVAL; |
1687 | 8449360c | Anthony Liguori | goto out;
|
1688 | 9f107513 | Anthony Liguori | } |
1689 | 8449360c | Anthony Liguori | |
1690 | 8449360c | Anthony Liguori | if (vs->fidp->fd == -1) { |
1691 | 8449360c | Anthony Liguori | err = -EINVAL; |
1692 | 8449360c | Anthony Liguori | goto out;
|
1693 | 8449360c | Anthony Liguori | } |
1694 | 8449360c | Anthony Liguori | |
1695 | 8449360c | Anthony Liguori | err = v9fs_do_lseek(s, vs->fidp->fd, vs->off, SEEK_SET); |
1696 | 8449360c | Anthony Liguori | |
1697 | 8449360c | Anthony Liguori | v9fs_write_post_lseek(s, vs, err); |
1698 | 8449360c | Anthony Liguori | return;
|
1699 | 8449360c | Anthony Liguori | |
1700 | 8449360c | Anthony Liguori | out:
|
1701 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1702 | 8449360c | Anthony Liguori | qemu_free(vs); |
1703 | 9f107513 | Anthony Liguori | } |
1704 | 9f107513 | Anthony Liguori | |
1705 | c494dd6f | Anthony Liguori | typedef struct V9fsCreateState { |
1706 | c494dd6f | Anthony Liguori | V9fsPDU *pdu; |
1707 | c494dd6f | Anthony Liguori | size_t offset; |
1708 | c494dd6f | Anthony Liguori | V9fsFidState *fidp; |
1709 | c494dd6f | Anthony Liguori | V9fsQID qid; |
1710 | c494dd6f | Anthony Liguori | int32_t perm; |
1711 | c494dd6f | Anthony Liguori | int8_t mode; |
1712 | c494dd6f | Anthony Liguori | struct stat stbuf;
|
1713 | c494dd6f | Anthony Liguori | V9fsString name; |
1714 | c494dd6f | Anthony Liguori | V9fsString extension; |
1715 | c494dd6f | Anthony Liguori | V9fsString fullname; |
1716 | c494dd6f | Anthony Liguori | } V9fsCreateState; |
1717 | c494dd6f | Anthony Liguori | |
1718 | c494dd6f | Anthony Liguori | static void v9fs_post_create(V9fsState *s, V9fsCreateState *vs, int err) |
1719 | c494dd6f | Anthony Liguori | { |
1720 | c494dd6f | Anthony Liguori | if (err == 0) { |
1721 | c494dd6f | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
1722 | c494dd6f | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1723 | c494dd6f | Anthony Liguori | |
1724 | c494dd6f | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1725 | c494dd6f | Anthony Liguori | |
1726 | c494dd6f | Anthony Liguori | err = vs->offset; |
1727 | c494dd6f | Anthony Liguori | } |
1728 | c494dd6f | Anthony Liguori | |
1729 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1730 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
1731 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
1732 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->fullname); |
1733 | c494dd6f | Anthony Liguori | qemu_free(vs); |
1734 | c494dd6f | Anthony Liguori | } |
1735 | c494dd6f | Anthony Liguori | |
1736 | c494dd6f | Anthony Liguori | static void v9fs_create_post_perms(V9fsState *s, V9fsCreateState *vs, int err) |
1737 | c494dd6f | Anthony Liguori | { |
1738 | c494dd6f | Anthony Liguori | if (err) {
|
1739 | c494dd6f | Anthony Liguori | err = -errno; |
1740 | c494dd6f | Anthony Liguori | } |
1741 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1742 | c494dd6f | Anthony Liguori | } |
1743 | c494dd6f | Anthony Liguori | |
1744 | c494dd6f | Anthony Liguori | static void v9fs_create_post_opendir(V9fsState *s, V9fsCreateState *vs, |
1745 | c494dd6f | Anthony Liguori | int err)
|
1746 | c494dd6f | Anthony Liguori | { |
1747 | c494dd6f | Anthony Liguori | if (!vs->fidp->dir) {
|
1748 | c494dd6f | Anthony Liguori | err = -errno; |
1749 | c494dd6f | Anthony Liguori | } |
1750 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1751 | c494dd6f | Anthony Liguori | } |
1752 | c494dd6f | Anthony Liguori | |
1753 | c494dd6f | Anthony Liguori | static void v9fs_create_post_dir_lstat(V9fsState *s, V9fsCreateState *vs, |
1754 | c494dd6f | Anthony Liguori | int err)
|
1755 | c494dd6f | Anthony Liguori | { |
1756 | c494dd6f | Anthony Liguori | if (err) {
|
1757 | c494dd6f | Anthony Liguori | err = -errno; |
1758 | c494dd6f | Anthony Liguori | goto out;
|
1759 | c494dd6f | Anthony Liguori | } |
1760 | c494dd6f | Anthony Liguori | |
1761 | c494dd6f | Anthony Liguori | vs->fidp->dir = v9fs_do_opendir(s, &vs->fullname); |
1762 | c494dd6f | Anthony Liguori | v9fs_create_post_opendir(s, vs, err); |
1763 | c494dd6f | Anthony Liguori | return;
|
1764 | c494dd6f | Anthony Liguori | |
1765 | c494dd6f | Anthony Liguori | out:
|
1766 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1767 | c494dd6f | Anthony Liguori | } |
1768 | c494dd6f | Anthony Liguori | |
1769 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mkdir(V9fsState *s, V9fsCreateState *vs, int err) |
1770 | c494dd6f | Anthony Liguori | { |
1771 | c494dd6f | Anthony Liguori | if (err) {
|
1772 | c494dd6f | Anthony Liguori | err = -errno; |
1773 | c494dd6f | Anthony Liguori | goto out;
|
1774 | c494dd6f | Anthony Liguori | } |
1775 | c494dd6f | Anthony Liguori | |
1776 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1777 | c494dd6f | Anthony Liguori | v9fs_create_post_dir_lstat(s, vs, err); |
1778 | c494dd6f | Anthony Liguori | return;
|
1779 | c494dd6f | Anthony Liguori | |
1780 | c494dd6f | Anthony Liguori | out:
|
1781 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1782 | c494dd6f | Anthony Liguori | } |
1783 | c494dd6f | Anthony Liguori | |
1784 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mksock(V9fsState *s, V9fsCreateState *vs, |
1785 | c494dd6f | Anthony Liguori | int err)
|
1786 | c494dd6f | Anthony Liguori | { |
1787 | c494dd6f | Anthony Liguori | if (err) {
|
1788 | c494dd6f | Anthony Liguori | err = -errno; |
1789 | c494dd6f | Anthony Liguori | goto out;
|
1790 | c494dd6f | Anthony Liguori | } |
1791 | c494dd6f | Anthony Liguori | |
1792 | c494dd6f | Anthony Liguori | err = v9fs_do_chmod(s, &vs->fullname, vs->perm & 0777);
|
1793 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1794 | c494dd6f | Anthony Liguori | return;
|
1795 | c494dd6f | Anthony Liguori | |
1796 | c494dd6f | Anthony Liguori | out:
|
1797 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1798 | c494dd6f | Anthony Liguori | } |
1799 | c494dd6f | Anthony Liguori | |
1800 | c494dd6f | Anthony Liguori | static void v9fs_create_post_fstat(V9fsState *s, V9fsCreateState *vs, int err) |
1801 | c494dd6f | Anthony Liguori | { |
1802 | c494dd6f | Anthony Liguori | if (err) {
|
1803 | c494dd6f | Anthony Liguori | vs->fidp->fd = -1;
|
1804 | c494dd6f | Anthony Liguori | err = -errno; |
1805 | c494dd6f | Anthony Liguori | } |
1806 | c494dd6f | Anthony Liguori | |
1807 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1808 | c494dd6f | Anthony Liguori | return;
|
1809 | c494dd6f | Anthony Liguori | } |
1810 | c494dd6f | Anthony Liguori | |
1811 | c494dd6f | Anthony Liguori | static void v9fs_create_post_open2(V9fsState *s, V9fsCreateState *vs, int err) |
1812 | c494dd6f | Anthony Liguori | { |
1813 | c494dd6f | Anthony Liguori | if (vs->fidp->fd == -1) { |
1814 | c494dd6f | Anthony Liguori | err = -errno; |
1815 | c494dd6f | Anthony Liguori | goto out;
|
1816 | c494dd6f | Anthony Liguori | } |
1817 | c494dd6f | Anthony Liguori | |
1818 | c494dd6f | Anthony Liguori | err = v9fs_do_fstat(s, vs->fidp->fd, &vs->stbuf); |
1819 | c494dd6f | Anthony Liguori | v9fs_create_post_fstat(s, vs, err); |
1820 | c494dd6f | Anthony Liguori | |
1821 | c494dd6f | Anthony Liguori | return;
|
1822 | c494dd6f | Anthony Liguori | |
1823 | c494dd6f | Anthony Liguori | out:
|
1824 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1825 | c494dd6f | Anthony Liguori | |
1826 | c494dd6f | Anthony Liguori | } |
1827 | c494dd6f | Anthony Liguori | |
1828 | c494dd6f | Anthony Liguori | static void v9fs_create_post_lstat(V9fsState *s, V9fsCreateState *vs, int err) |
1829 | c494dd6f | Anthony Liguori | { |
1830 | c494dd6f | Anthony Liguori | |
1831 | c494dd6f | Anthony Liguori | if (err == 0 || errno != ENOENT) { |
1832 | c494dd6f | Anthony Liguori | err = -errno; |
1833 | c494dd6f | Anthony Liguori | goto out;
|
1834 | c494dd6f | Anthony Liguori | } |
1835 | c494dd6f | Anthony Liguori | |
1836 | c494dd6f | Anthony Liguori | if (vs->perm & P9_STAT_MODE_DIR) {
|
1837 | c494dd6f | Anthony Liguori | err = v9fs_do_mkdir(s, &vs->fullname, vs->perm & 0777);
|
1838 | c494dd6f | Anthony Liguori | v9fs_create_post_mkdir(s, vs, err); |
1839 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SYMLINK) { |
1840 | c494dd6f | Anthony Liguori | err = v9fs_do_symlink(s, &vs->extension, &vs->fullname); |
1841 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1842 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_LINK) { |
1843 | c494dd6f | Anthony Liguori | int32_t nfid = atoi(vs->extension.data); |
1844 | c494dd6f | Anthony Liguori | V9fsFidState *nfidp = lookup_fid(s, nfid); |
1845 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
1846 | c494dd6f | Anthony Liguori | err = -errno; |
1847 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1848 | c494dd6f | Anthony Liguori | } |
1849 | c494dd6f | Anthony Liguori | err = v9fs_do_link(s, &nfidp->path, &vs->fullname); |
1850 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1851 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_DEVICE) { |
1852 | c494dd6f | Anthony Liguori | char ctype;
|
1853 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
1854 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
1855 | c494dd6f | Anthony Liguori | |
1856 | c494dd6f | Anthony Liguori | if (sscanf(vs->extension.data, "%c %u %u", &ctype, &major, |
1857 | c494dd6f | Anthony Liguori | &minor) != 3) {
|
1858 | c494dd6f | Anthony Liguori | err = -errno; |
1859 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1860 | c494dd6f | Anthony Liguori | } |
1861 | c494dd6f | Anthony Liguori | |
1862 | c494dd6f | Anthony Liguori | switch (ctype) {
|
1863 | c494dd6f | Anthony Liguori | case 'c': |
1864 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
1865 | c494dd6f | Anthony Liguori | break;
|
1866 | c494dd6f | Anthony Liguori | case 'b': |
1867 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
1868 | c494dd6f | Anthony Liguori | break;
|
1869 | c494dd6f | Anthony Liguori | default:
|
1870 | c494dd6f | Anthony Liguori | err = -EIO; |
1871 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1872 | c494dd6f | Anthony Liguori | } |
1873 | c494dd6f | Anthony Liguori | |
1874 | c494dd6f | Anthony Liguori | nmode |= vs->perm & 0777;
|
1875 | c494dd6f | Anthony Liguori | err = v9fs_do_mknod(s, &vs->fullname, nmode, makedev(major, minor)); |
1876 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
1877 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_NAMED_PIPE) { |
1878 | c494dd6f | Anthony Liguori | err = v9fs_do_mknod(s, &vs->fullname, S_IFIFO | (vs->mode & 0777), 0); |
1879 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1880 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SOCKET) { |
1881 | c494dd6f | Anthony Liguori | err = v9fs_do_mksock(s, &vs->fullname); |
1882 | c494dd6f | Anthony Liguori | v9fs_create_post_mksock(s, vs, err); |
1883 | c494dd6f | Anthony Liguori | } else {
|
1884 | c494dd6f | Anthony Liguori | vs->fidp->fd = v9fs_do_open2(s, &vs->fullname, |
1885 | c494dd6f | Anthony Liguori | omode_to_uflags(vs->mode) | O_CREAT, |
1886 | c494dd6f | Anthony Liguori | vs->perm & 0777);
|
1887 | c494dd6f | Anthony Liguori | v9fs_create_post_open2(s, vs, err); |
1888 | c494dd6f | Anthony Liguori | } |
1889 | c494dd6f | Anthony Liguori | |
1890 | c494dd6f | Anthony Liguori | return;
|
1891 | c494dd6f | Anthony Liguori | |
1892 | c494dd6f | Anthony Liguori | out:
|
1893 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
1894 | c494dd6f | Anthony Liguori | } |
1895 | c494dd6f | Anthony Liguori | |
1896 | 9f107513 | Anthony Liguori | static void v9fs_create(V9fsState *s, V9fsPDU *pdu) |
1897 | 9f107513 | Anthony Liguori | { |
1898 | c494dd6f | Anthony Liguori | int32_t fid; |
1899 | c494dd6f | Anthony Liguori | V9fsCreateState *vs; |
1900 | c494dd6f | Anthony Liguori | int err = 0; |
1901 | c494dd6f | Anthony Liguori | |
1902 | c494dd6f | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1903 | c494dd6f | Anthony Liguori | vs->pdu = pdu; |
1904 | c494dd6f | Anthony Liguori | vs->offset = 7;
|
1905 | c494dd6f | Anthony Liguori | |
1906 | c494dd6f | Anthony Liguori | v9fs_string_init(&vs->fullname); |
1907 | c494dd6f | Anthony Liguori | |
1908 | c494dd6f | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dsdbs", &fid, &vs->name,
|
1909 | c494dd6f | Anthony Liguori | &vs->perm, &vs->mode, &vs->extension); |
1910 | c494dd6f | Anthony Liguori | |
1911 | c494dd6f | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1912 | c494dd6f | Anthony Liguori | if (vs->fidp == NULL) { |
1913 | c494dd6f | Anthony Liguori | err = -EINVAL; |
1914 | c494dd6f | Anthony Liguori | goto out;
|
1915 | 9f107513 | Anthony Liguori | } |
1916 | c494dd6f | Anthony Liguori | |
1917 | c494dd6f | Anthony Liguori | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
1918 | c494dd6f | Anthony Liguori | vs->name.data); |
1919 | c494dd6f | Anthony Liguori | |
1920 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1921 | c494dd6f | Anthony Liguori | v9fs_create_post_lstat(s, vs, err); |
1922 | c494dd6f | Anthony Liguori | return;
|
1923 | c494dd6f | Anthony Liguori | |
1924 | c494dd6f | Anthony Liguori | out:
|
1925 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1926 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
1927 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
1928 | c494dd6f | Anthony Liguori | qemu_free(vs); |
1929 | 9f107513 | Anthony Liguori | } |
1930 | 9f107513 | Anthony Liguori | |
1931 | 9f107513 | Anthony Liguori | static void v9fs_flush(V9fsState *s, V9fsPDU *pdu) |
1932 | 9f107513 | Anthony Liguori | { |
1933 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
1934 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
1935 | 9f107513 | Anthony Liguori | } |
1936 | 9f107513 | Anthony Liguori | |
1937 | 5bae1900 | Anthony Liguori | typedef struct V9fsRemoveState { |
1938 | 5bae1900 | Anthony Liguori | V9fsPDU *pdu; |
1939 | 5bae1900 | Anthony Liguori | size_t offset; |
1940 | 5bae1900 | Anthony Liguori | V9fsFidState *fidp; |
1941 | 5bae1900 | Anthony Liguori | } V9fsRemoveState; |
1942 | 5bae1900 | Anthony Liguori | |
1943 | 5bae1900 | Anthony Liguori | static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs, |
1944 | 5bae1900 | Anthony Liguori | int err)
|
1945 | 5bae1900 | Anthony Liguori | { |
1946 | 5bae1900 | Anthony Liguori | /* For TREMOVE we need to clunk the fid even on failed remove */
|
1947 | 5bae1900 | Anthony Liguori | err = free_fid(s, vs->fidp->fid); |
1948 | 5bae1900 | Anthony Liguori | if (err < 0) { |
1949 | 5bae1900 | Anthony Liguori | goto out;
|
1950 | 5bae1900 | Anthony Liguori | } |
1951 | 5bae1900 | Anthony Liguori | |
1952 | 5bae1900 | Anthony Liguori | err = vs->offset; |
1953 | 5bae1900 | Anthony Liguori | out:
|
1954 | 5bae1900 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1955 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
1956 | 5bae1900 | Anthony Liguori | } |
1957 | 5bae1900 | Anthony Liguori | |
1958 | 9f107513 | Anthony Liguori | static void v9fs_remove(V9fsState *s, V9fsPDU *pdu) |
1959 | 9f107513 | Anthony Liguori | { |
1960 | 5bae1900 | Anthony Liguori | int32_t fid; |
1961 | 5bae1900 | Anthony Liguori | V9fsRemoveState *vs; |
1962 | 5bae1900 | Anthony Liguori | int err = 0; |
1963 | 5bae1900 | Anthony Liguori | |
1964 | 5bae1900 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1965 | 5bae1900 | Anthony Liguori | vs->pdu = pdu; |
1966 | 5bae1900 | Anthony Liguori | vs->offset = 7;
|
1967 | 5bae1900 | Anthony Liguori | |
1968 | 5bae1900 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1969 | 5bae1900 | Anthony Liguori | |
1970 | 5bae1900 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1971 | 5bae1900 | Anthony Liguori | if (vs->fidp == NULL) { |
1972 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
1973 | 5bae1900 | Anthony Liguori | goto out;
|
1974 | 9f107513 | Anthony Liguori | } |
1975 | 5bae1900 | Anthony Liguori | |
1976 | 5bae1900 | Anthony Liguori | err = v9fs_do_remove(s, &vs->fidp->path); |
1977 | 5bae1900 | Anthony Liguori | v9fs_remove_post_remove(s, vs, err); |
1978 | 5bae1900 | Anthony Liguori | return;
|
1979 | 5bae1900 | Anthony Liguori | |
1980 | 5bae1900 | Anthony Liguori | out:
|
1981 | 5bae1900 | Anthony Liguori | complete_pdu(s, pdu, err); |
1982 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
1983 | 9f107513 | Anthony Liguori | } |
1984 | 9f107513 | Anthony Liguori | |
1985 | 8cf89e00 | Anthony Liguori | typedef struct V9fsWstatState |
1986 | 8cf89e00 | Anthony Liguori | { |
1987 | 8cf89e00 | Anthony Liguori | V9fsPDU *pdu; |
1988 | 8cf89e00 | Anthony Liguori | size_t offset; |
1989 | 8cf89e00 | Anthony Liguori | int16_t unused; |
1990 | 8cf89e00 | Anthony Liguori | V9fsStat v9stat; |
1991 | 8cf89e00 | Anthony Liguori | V9fsFidState *fidp; |
1992 | 8cf89e00 | Anthony Liguori | struct stat stbuf;
|
1993 | 8cf89e00 | Anthony Liguori | V9fsString nname; |
1994 | 8cf89e00 | Anthony Liguori | } V9fsWstatState; |
1995 | 8cf89e00 | Anthony Liguori | |
1996 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err) |
1997 | 8cf89e00 | Anthony Liguori | { |
1998 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
1999 | 8cf89e00 | Anthony Liguori | goto out;
|
2000 | 8cf89e00 | Anthony Liguori | } |
2001 | 8cf89e00 | Anthony Liguori | |
2002 | 8cf89e00 | Anthony Liguori | err = vs->offset; |
2003 | 8cf89e00 | Anthony Liguori | |
2004 | 8cf89e00 | Anthony Liguori | out:
|
2005 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2006 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2007 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2008 | 8cf89e00 | Anthony Liguori | } |
2009 | 8cf89e00 | Anthony Liguori | |
2010 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err) |
2011 | 8cf89e00 | Anthony Liguori | { |
2012 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2013 | 8cf89e00 | Anthony Liguori | goto out;
|
2014 | 8cf89e00 | Anthony Liguori | } |
2015 | 8cf89e00 | Anthony Liguori | |
2016 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
2017 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&vs->nname); |
2018 | 8cf89e00 | Anthony Liguori | } |
2019 | 8cf89e00 | Anthony Liguori | |
2020 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.length != -1) { |
2021 | 8cf89e00 | Anthony Liguori | if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) { |
2022 | 8cf89e00 | Anthony Liguori | err = -errno; |
2023 | 8cf89e00 | Anthony Liguori | } |
2024 | 8cf89e00 | Anthony Liguori | } |
2025 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_truncate(s, vs, err); |
2026 | 8cf89e00 | Anthony Liguori | return;
|
2027 | 8cf89e00 | Anthony Liguori | |
2028 | 8cf89e00 | Anthony Liguori | out:
|
2029 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2030 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2031 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2032 | 8cf89e00 | Anthony Liguori | } |
2033 | 8cf89e00 | Anthony Liguori | |
2034 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err) |
2035 | 8cf89e00 | Anthony Liguori | { |
2036 | 8cf89e00 | Anthony Liguori | V9fsFidState *fidp; |
2037 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2038 | 8cf89e00 | Anthony Liguori | goto out;
|
2039 | 8cf89e00 | Anthony Liguori | } |
2040 | 8cf89e00 | Anthony Liguori | |
2041 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.name.size != 0) { |
2042 | 8cf89e00 | Anthony Liguori | char *old_name, *new_name;
|
2043 | 8cf89e00 | Anthony Liguori | char *end;
|
2044 | 8cf89e00 | Anthony Liguori | |
2045 | 8cf89e00 | Anthony Liguori | old_name = vs->fidp->path.data; |
2046 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2047 | 8cf89e00 | Anthony Liguori | if (end) {
|
2048 | 8cf89e00 | Anthony Liguori | end++; |
2049 | 8cf89e00 | Anthony Liguori | } else {
|
2050 | 8cf89e00 | Anthony Liguori | end = old_name; |
2051 | 8cf89e00 | Anthony Liguori | } |
2052 | 8cf89e00 | Anthony Liguori | |
2053 | 8cf89e00 | Anthony Liguori | new_name = qemu_malloc(end - old_name + vs->v9stat.name.size + 1);
|
2054 | 8cf89e00 | Anthony Liguori | |
2055 | 8cf89e00 | Anthony Liguori | memset(new_name, 0, end - old_name + vs->v9stat.name.size + 1); |
2056 | 8cf89e00 | Anthony Liguori | memcpy(new_name, old_name, end - old_name); |
2057 | 8cf89e00 | Anthony Liguori | memcpy(new_name + (end - old_name), vs->v9stat.name.data, |
2058 | 8cf89e00 | Anthony Liguori | vs->v9stat.name.size); |
2059 | 8cf89e00 | Anthony Liguori | vs->nname.data = new_name; |
2060 | 8cf89e00 | Anthony Liguori | vs->nname.size = strlen(new_name); |
2061 | 8cf89e00 | Anthony Liguori | |
2062 | 8cf89e00 | Anthony Liguori | if (strcmp(new_name, vs->fidp->path.data) != 0) { |
2063 | 8cf89e00 | Anthony Liguori | if (v9fs_do_rename(s, &vs->fidp->path, &vs->nname)) {
|
2064 | 8cf89e00 | Anthony Liguori | err = -errno; |
2065 | 8cf89e00 | Anthony Liguori | } else {
|
2066 | 8cf89e00 | Anthony Liguori | /*
|
2067 | 8cf89e00 | Anthony Liguori | * Fixup fid's pointing to the old name to
|
2068 | 8cf89e00 | Anthony Liguori | * start pointing to the new name
|
2069 | 8cf89e00 | Anthony Liguori | */
|
2070 | 8cf89e00 | Anthony Liguori | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
2071 | 8cf89e00 | Anthony Liguori | |
2072 | 8cf89e00 | Anthony Liguori | if (vs->fidp == fidp) {
|
2073 | 8cf89e00 | Anthony Liguori | /*
|
2074 | 8cf89e00 | Anthony Liguori | * we replace name of this fid towards the end
|
2075 | 8cf89e00 | Anthony Liguori | * so that our below strcmp will work
|
2076 | 8cf89e00 | Anthony Liguori | */
|
2077 | 8cf89e00 | Anthony Liguori | continue;
|
2078 | 8cf89e00 | Anthony Liguori | } |
2079 | 8cf89e00 | Anthony Liguori | if (!strncmp(vs->fidp->path.data, fidp->path.data,
|
2080 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data))) { |
2081 | 8cf89e00 | Anthony Liguori | /* replace the name */
|
2082 | 8cf89e00 | Anthony Liguori | v9fs_fix_path(&fidp->path, &vs->nname, |
2083 | 8cf89e00 | Anthony Liguori | strlen(vs->fidp->path.data)); |
2084 | 8cf89e00 | Anthony Liguori | } |
2085 | 8cf89e00 | Anthony Liguori | } |
2086 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->nname); |
2087 | 8cf89e00 | Anthony Liguori | } |
2088 | 8cf89e00 | Anthony Liguori | } |
2089 | 8cf89e00 | Anthony Liguori | } |
2090 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_rename(s, vs, err); |
2091 | 8cf89e00 | Anthony Liguori | return;
|
2092 | 8cf89e00 | Anthony Liguori | |
2093 | 8cf89e00 | Anthony Liguori | out:
|
2094 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2095 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2096 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2097 | 8cf89e00 | Anthony Liguori | } |
2098 | 8cf89e00 | Anthony Liguori | |
2099 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err) |
2100 | 8cf89e00 | Anthony Liguori | { |
2101 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2102 | 8cf89e00 | Anthony Liguori | goto out;
|
2103 | 8cf89e00 | Anthony Liguori | } |
2104 | 8cf89e00 | Anthony Liguori | |
2105 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.n_gid != -1) { |
2106 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chown(s, &vs->fidp->path, vs->v9stat.n_uid,
|
2107 | 8cf89e00 | Anthony Liguori | vs->v9stat.n_gid)) { |
2108 | 8cf89e00 | Anthony Liguori | err = -errno; |
2109 | 8cf89e00 | Anthony Liguori | } |
2110 | 8cf89e00 | Anthony Liguori | } |
2111 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chown(s, vs, err); |
2112 | 8cf89e00 | Anthony Liguori | return;
|
2113 | 8cf89e00 | Anthony Liguori | |
2114 | 8cf89e00 | Anthony Liguori | out:
|
2115 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2116 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2117 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2118 | 8cf89e00 | Anthony Liguori | } |
2119 | 8cf89e00 | Anthony Liguori | |
2120 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chmod(V9fsState *s, V9fsWstatState *vs, int err) |
2121 | 8cf89e00 | Anthony Liguori | { |
2122 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2123 | 8cf89e00 | Anthony Liguori | goto out;
|
2124 | 8cf89e00 | Anthony Liguori | } |
2125 | 8cf89e00 | Anthony Liguori | |
2126 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mtime != -1) { |
2127 | 8cf89e00 | Anthony Liguori | struct utimbuf tb;
|
2128 | 8cf89e00 | Anthony Liguori | tb.actime = 0;
|
2129 | 8cf89e00 | Anthony Liguori | tb.modtime = vs->v9stat.mtime; |
2130 | 8cf89e00 | Anthony Liguori | if (v9fs_do_utime(s, &vs->fidp->path, &tb)) {
|
2131 | 8cf89e00 | Anthony Liguori | err = -errno; |
2132 | 8cf89e00 | Anthony Liguori | } |
2133 | 8cf89e00 | Anthony Liguori | } |
2134 | 8cf89e00 | Anthony Liguori | |
2135 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_utime(s, vs, err); |
2136 | 8cf89e00 | Anthony Liguori | return;
|
2137 | 8cf89e00 | Anthony Liguori | |
2138 | 8cf89e00 | Anthony Liguori | out:
|
2139 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2140 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2141 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2142 | 8cf89e00 | Anthony Liguori | } |
2143 | 8cf89e00 | Anthony Liguori | |
2144 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_fsync(V9fsState *s, V9fsWstatState *vs, int err) |
2145 | 8cf89e00 | Anthony Liguori | { |
2146 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2147 | 8cf89e00 | Anthony Liguori | err = -errno; |
2148 | 8cf89e00 | Anthony Liguori | } |
2149 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2150 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2151 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2152 | 8cf89e00 | Anthony Liguori | } |
2153 | 8cf89e00 | Anthony Liguori | |
2154 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_lstat(V9fsState *s, V9fsWstatState *vs, int err) |
2155 | 8cf89e00 | Anthony Liguori | { |
2156 | 8cf89e00 | Anthony Liguori | uint32_t v9_mode; |
2157 | 8cf89e00 | Anthony Liguori | |
2158 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2159 | 8cf89e00 | Anthony Liguori | err = -errno; |
2160 | 8cf89e00 | Anthony Liguori | goto out;
|
2161 | 8cf89e00 | Anthony Liguori | } |
2162 | 8cf89e00 | Anthony Liguori | |
2163 | 8cf89e00 | Anthony Liguori | v9_mode = stat_to_v9mode(&vs->stbuf); |
2164 | 8cf89e00 | Anthony Liguori | |
2165 | 8cf89e00 | Anthony Liguori | if ((vs->v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2166 | 8cf89e00 | Anthony Liguori | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2167 | 8cf89e00 | Anthony Liguori | /* Attempting to change the type */
|
2168 | 8cf89e00 | Anthony Liguori | err = -EIO; |
2169 | 8cf89e00 | Anthony Liguori | goto out;
|
2170 | 8cf89e00 | Anthony Liguori | } |
2171 | 8cf89e00 | Anthony Liguori | |
2172 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chmod(s, &vs->fidp->path, v9mode_to_mode(vs->v9stat.mode,
|
2173 | 8cf89e00 | Anthony Liguori | &vs->v9stat.extension))) { |
2174 | 8cf89e00 | Anthony Liguori | err = -errno; |
2175 | 8cf89e00 | Anthony Liguori | } |
2176 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2177 | 8cf89e00 | Anthony Liguori | return;
|
2178 | 8cf89e00 | Anthony Liguori | |
2179 | 8cf89e00 | Anthony Liguori | out:
|
2180 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2181 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2182 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2183 | 8cf89e00 | Anthony Liguori | } |
2184 | 8cf89e00 | Anthony Liguori | |
2185 | 9f107513 | Anthony Liguori | static void v9fs_wstat(V9fsState *s, V9fsPDU *pdu) |
2186 | 9f107513 | Anthony Liguori | { |
2187 | 8cf89e00 | Anthony Liguori | int32_t fid; |
2188 | 8cf89e00 | Anthony Liguori | V9fsWstatState *vs; |
2189 | 8cf89e00 | Anthony Liguori | int err = 0; |
2190 | 8cf89e00 | Anthony Liguori | |
2191 | 8cf89e00 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2192 | 8cf89e00 | Anthony Liguori | vs->pdu = pdu; |
2193 | 8cf89e00 | Anthony Liguori | vs->offset = 7;
|
2194 | 8cf89e00 | Anthony Liguori | |
2195 | 8cf89e00 | Anthony Liguori | pdu_unmarshal(pdu, vs->offset, "dwS", &fid, &vs->unused, &vs->v9stat);
|
2196 | 8cf89e00 | Anthony Liguori | |
2197 | 8cf89e00 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2198 | 8cf89e00 | Anthony Liguori | if (vs->fidp == NULL) { |
2199 | 8cf89e00 | Anthony Liguori | err = -EINVAL; |
2200 | 8cf89e00 | Anthony Liguori | goto out;
|
2201 | 9f107513 | Anthony Liguori | } |
2202 | 8cf89e00 | Anthony Liguori | |
2203 | 8cf89e00 | Anthony Liguori | /* do we need to sync the file? */
|
2204 | 8cf89e00 | Anthony Liguori | if (donttouch_stat(&vs->v9stat)) {
|
2205 | 8cf89e00 | Anthony Liguori | err = v9fs_do_fsync(s, vs->fidp->fd); |
2206 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_fsync(s, vs, err); |
2207 | 8cf89e00 | Anthony Liguori | return;
|
2208 | 8cf89e00 | Anthony Liguori | } |
2209 | 8cf89e00 | Anthony Liguori | |
2210 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mode != -1) { |
2211 | 8cf89e00 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
2212 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_lstat(s, vs, err); |
2213 | 8cf89e00 | Anthony Liguori | return;
|
2214 | 8cf89e00 | Anthony Liguori | } |
2215 | 8cf89e00 | Anthony Liguori | |
2216 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2217 | 8cf89e00 | Anthony Liguori | return;
|
2218 | 8cf89e00 | Anthony Liguori | |
2219 | 8cf89e00 | Anthony Liguori | out:
|
2220 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2221 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2222 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2223 | 9f107513 | Anthony Liguori | } |
2224 | 9f107513 | Anthony Liguori | |
2225 | 9f107513 | Anthony Liguori | typedef void (pdu_handler_t)(V9fsState *s, V9fsPDU *pdu); |
2226 | 9f107513 | Anthony Liguori | |
2227 | 9f107513 | Anthony Liguori | static pdu_handler_t *pdu_handlers[] = {
|
2228 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
2229 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
2230 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
2231 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
2232 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
2233 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
2234 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
2235 | 9f107513 | Anthony Liguori | #if 0
|
2236 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
2237 | 9f107513 | Anthony Liguori | #endif
|
2238 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
2239 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
2240 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
2241 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
2242 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
2243 | 9f107513 | Anthony Liguori | }; |
2244 | 9f107513 | Anthony Liguori | |
2245 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
2246 | 9f107513 | Anthony Liguori | { |
2247 | 9f107513 | Anthony Liguori | pdu_handler_t *handler; |
2248 | 9f107513 | Anthony Liguori | |
2249 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
2250 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
2251 | 9f107513 | Anthony Liguori | } |
2252 | 9f107513 | Anthony Liguori | |
2253 | 9f107513 | Anthony Liguori | BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); |
2254 | 9f107513 | Anthony Liguori | |
2255 | 9f107513 | Anthony Liguori | handler = pdu_handlers[pdu->id]; |
2256 | 9f107513 | Anthony Liguori | BUG_ON(handler == NULL);
|
2257 | 9f107513 | Anthony Liguori | |
2258 | 9f107513 | Anthony Liguori | handler(s, pdu); |
2259 | 9f107513 | Anthony Liguori | } |
2260 | 9f107513 | Anthony Liguori | |
2261 | 9f107513 | Anthony Liguori | static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) |
2262 | 9f107513 | Anthony Liguori | { |
2263 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
2264 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
2265 | 9f107513 | Anthony Liguori | ssize_t len; |
2266 | 9f107513 | Anthony Liguori | |
2267 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
2268 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
2269 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
2270 | 9f107513 | Anthony Liguori | |
2271 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
2272 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
2273 | 9f107513 | Anthony Liguori | |
2274 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
2275 | 9f107513 | Anthony Liguori | |
2276 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
2277 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
2278 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
2279 | 9f107513 | Anthony Liguori | |
2280 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
2281 | 9f107513 | Anthony Liguori | } |
2282 | 9f107513 | Anthony Liguori | |
2283 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
2284 | 9f107513 | Anthony Liguori | } |
2285 | 9f107513 | Anthony Liguori | |
2286 | 9f107513 | Anthony Liguori | static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
|
2287 | 9f107513 | Anthony Liguori | { |
2288 | 9f107513 | Anthony Liguori | features |= 1 << VIRTIO_9P_MOUNT_TAG;
|
2289 | 9f107513 | Anthony Liguori | return features;
|
2290 | 9f107513 | Anthony Liguori | } |
2291 | 9f107513 | Anthony Liguori | |
2292 | 9f107513 | Anthony Liguori | static V9fsState *to_virtio_9p(VirtIODevice *vdev)
|
2293 | 9f107513 | Anthony Liguori | { |
2294 | 9f107513 | Anthony Liguori | return (V9fsState *)vdev;
|
2295 | 9f107513 | Anthony Liguori | } |
2296 | 9f107513 | Anthony Liguori | |
2297 | 9f107513 | Anthony Liguori | static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) |
2298 | 9f107513 | Anthony Liguori | { |
2299 | 9f107513 | Anthony Liguori | struct virtio_9p_config *cfg;
|
2300 | 9f107513 | Anthony Liguori | V9fsState *s = to_virtio_9p(vdev); |
2301 | 9f107513 | Anthony Liguori | |
2302 | 9f107513 | Anthony Liguori | cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + |
2303 | 9f107513 | Anthony Liguori | s->tag_len); |
2304 | 9f107513 | Anthony Liguori | stw_raw(&cfg->tag_len, s->tag_len); |
2305 | 9f107513 | Anthony Liguori | memcpy(cfg->tag, s->tag, s->tag_len); |
2306 | 9f107513 | Anthony Liguori | memcpy(config, cfg, s->config_size); |
2307 | 9f107513 | Anthony Liguori | qemu_free(cfg); |
2308 | 9f107513 | Anthony Liguori | } |
2309 | 9f107513 | Anthony Liguori | |
2310 | 9f107513 | Anthony Liguori | VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) |
2311 | 9f107513 | Anthony Liguori | { |
2312 | 9f107513 | Anthony Liguori | V9fsState *s; |
2313 | 9f107513 | Anthony Liguori | int i, len;
|
2314 | 9f107513 | Anthony Liguori | struct stat stat;
|
2315 | 9f107513 | Anthony Liguori | FsTypeEntry *fse; |
2316 | 9f107513 | Anthony Liguori | |
2317 | 9f107513 | Anthony Liguori | |
2318 | 9f107513 | Anthony Liguori | s = (V9fsState *)virtio_common_init("virtio-9p",
|
2319 | 9f107513 | Anthony Liguori | VIRTIO_ID_9P, |
2320 | 9f107513 | Anthony Liguori | sizeof(struct virtio_9p_config)+ |
2321 | 9f107513 | Anthony Liguori | MAX_TAG_LEN, |
2322 | 9f107513 | Anthony Liguori | sizeof(V9fsState));
|
2323 | 9f107513 | Anthony Liguori | |
2324 | 9f107513 | Anthony Liguori | /* initialize pdu allocator */
|
2325 | 9f107513 | Anthony Liguori | QLIST_INIT(&s->free_list); |
2326 | 9f107513 | Anthony Liguori | for (i = 0; i < (MAX_REQ - 1); i++) { |
2327 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); |
2328 | 9f107513 | Anthony Liguori | } |
2329 | 9f107513 | Anthony Liguori | |
2330 | 9f107513 | Anthony Liguori | s->vq = virtio_add_queue(&s->vdev, MAX_REQ, handle_9p_output); |
2331 | 9f107513 | Anthony Liguori | |
2332 | 9f107513 | Anthony Liguori | fse = get_fsdev_fsentry(conf->fsdev_id); |
2333 | 9f107513 | Anthony Liguori | |
2334 | 9f107513 | Anthony Liguori | if (!fse) {
|
2335 | 9f107513 | Anthony Liguori | /* We don't have a fsdev identified by fsdev_id */
|
2336 | 9f107513 | Anthony Liguori | fprintf(stderr, "Virtio-9p device couldn't find fsdev "
|
2337 | 9f107513 | Anthony Liguori | "with the id %s\n", conf->fsdev_id);
|
2338 | 9f107513 | Anthony Liguori | exit(1);
|
2339 | 9f107513 | Anthony Liguori | } |
2340 | 9f107513 | Anthony Liguori | |
2341 | 9f107513 | Anthony Liguori | if (!fse->path || !conf->tag) {
|
2342 | 9f107513 | Anthony Liguori | /* we haven't specified a mount_tag or the path */
|
2343 | 9f107513 | Anthony Liguori | fprintf(stderr, "fsdev with id %s needs path "
|
2344 | 9f107513 | Anthony Liguori | "and Virtio-9p device needs mount_tag arguments\n",
|
2345 | 9f107513 | Anthony Liguori | conf->fsdev_id); |
2346 | 9f107513 | Anthony Liguori | exit(1);
|
2347 | 9f107513 | Anthony Liguori | } |
2348 | 9f107513 | Anthony Liguori | |
2349 | 9f107513 | Anthony Liguori | if (lstat(fse->path, &stat)) {
|
2350 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s does not exist\n", fse->path);
|
2351 | 9f107513 | Anthony Liguori | exit(1);
|
2352 | 9f107513 | Anthony Liguori | } else if (!S_ISDIR(stat.st_mode)) { |
2353 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s is not a directory \n", fse->path);
|
2354 | 9f107513 | Anthony Liguori | exit(1);
|
2355 | 9f107513 | Anthony Liguori | } |
2356 | 9f107513 | Anthony Liguori | |
2357 | 9f107513 | Anthony Liguori | s->ctx.fs_root = qemu_strdup(fse->path); |
2358 | 9f107513 | Anthony Liguori | len = strlen(conf->tag); |
2359 | 9f107513 | Anthony Liguori | if (len > MAX_TAG_LEN) {
|
2360 | 9f107513 | Anthony Liguori | len = MAX_TAG_LEN; |
2361 | 9f107513 | Anthony Liguori | } |
2362 | 9f107513 | Anthony Liguori | /* s->tag is non-NULL terminated string */
|
2363 | 9f107513 | Anthony Liguori | s->tag = qemu_malloc(len); |
2364 | 9f107513 | Anthony Liguori | memcpy(s->tag, conf->tag, len); |
2365 | 9f107513 | Anthony Liguori | s->tag_len = len; |
2366 | 9f107513 | Anthony Liguori | s->ctx.uid = -1;
|
2367 | 9f107513 | Anthony Liguori | |
2368 | 9f107513 | Anthony Liguori | s->ops = fse->ops; |
2369 | 9f107513 | Anthony Liguori | s->vdev.get_features = virtio_9p_get_features; |
2370 | 9f107513 | Anthony Liguori | s->config_size = sizeof(struct virtio_9p_config) + |
2371 | 9f107513 | Anthony Liguori | s->tag_len; |
2372 | 9f107513 | Anthony Liguori | s->vdev.get_config = virtio_9p_get_config; |
2373 | 9f107513 | Anthony Liguori | |
2374 | 9f107513 | Anthony Liguori | return &s->vdev;
|
2375 | 9f107513 | Anthony Liguori | } |