Commit | Line | Data |
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da7c5cc6 | 1 | /* |
47a73614 KB |
2 | * Copyright (c) 1989, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
da7c5cc6 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
fc2aed1e | 6 | * |
ac85da8a | 7 | * @(#)vfs_syscalls.c 8.5 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
38a01dbe KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/namei.h> | |
13 | #include <sys/filedesc.h> | |
14 | #include <sys/kernel.h> | |
15 | #include <sys/file.h> | |
16 | #include <sys/stat.h> | |
17 | #include <sys/vnode.h> | |
18 | #include <sys/mount.h> | |
19 | #include <sys/proc.h> | |
20 | #include <sys/uio.h> | |
21 | #include <sys/malloc.h> | |
22 | #include <sys/dirent.h> | |
23 | ||
be320a2b | 24 | #include <vm/vm.h> |
6aecdd4c | 25 | #include <sys/sysctl.h> |
88a7a62a | 26 | |
7121fdf0 KB |
27 | static int change_dir __P((struct nameidata *ndp, struct proc *p)); |
28 | ||
a5368812 KM |
29 | #ifdef REF_DIAGNOSTIC |
30 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
31 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
32 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
33 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
34 | #else | |
35 | #define CHECKPOINTREF | |
36 | #define CHECKREFS(D) | |
37 | #endif | |
38 | ||
fc2aed1e KM |
39 | /* |
40 | * Virtual File System System Calls | |
41 | */ | |
3e78e260 | 42 | |
4f083fd7 | 43 | /* |
7121fdf0 | 44 | * Mount a file system. |
4f083fd7 | 45 | */ |
9e97623a CT |
46 | struct mount_args { |
47 | int type; | |
7121fdf0 | 48 | char *path; |
9e97623a CT |
49 | int flags; |
50 | caddr_t data; | |
51 | }; | |
6a6a1e5f KM |
52 | /* ARGSUSED */ |
53 | mount(p, uap, retval) | |
5e00df3b | 54 | struct proc *p; |
9e97623a | 55 | register struct mount_args *uap; |
6a6a1e5f KM |
56 | int *retval; |
57 | { | |
d48157d5 KM |
58 | register struct vnode *vp; |
59 | register struct mount *mp; | |
47971887 | 60 | int error, flag; |
8429d022 | 61 | struct nameidata nd; |
3e78e260 | 62 | |
fc2aed1e KM |
63 | /* |
64 | * Must be super user | |
65 | */ | |
8429d022 MK |
66 | if (error = suser(p->p_ucred, &p->p_acflag)) |
67 | return (error); | |
fc2aed1e KM |
68 | /* |
69 | * Get vnode to be covered | |
70 | */ | |
7121fdf0 | 71 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 72 | if (error = namei(&nd)) |
8429d022 | 73 | return (error); |
dd4c01c2 | 74 | vp = nd.ni_vp; |
54fb9dc2 | 75 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
76 | if ((vp->v_flag & VROOT) == 0) { |
77 | vput(vp); | |
8429d022 | 78 | return (EINVAL); |
d48157d5 KM |
79 | } |
80 | mp = vp->v_mount; | |
db62a40f | 81 | flag = mp->mnt_flag; |
d48157d5 | 82 | /* |
db62a40f KM |
83 | * We only allow the filesystem to be reloaded if it |
84 | * is currently mounted read-only. | |
d48157d5 | 85 | */ |
db62a40f KM |
86 | if ((uap->flags & MNT_RELOAD) && |
87 | ((mp->mnt_flag & MNT_RDONLY) == 0)) { | |
d48157d5 | 88 | vput(vp); |
8429d022 | 89 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 90 | } |
db62a40f KM |
91 | mp->mnt_flag |= |
92 | uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); | |
d48157d5 KM |
93 | VOP_UNLOCK(vp); |
94 | goto update; | |
95 | } | |
95a9cadb | 96 | if (vp->v_usecount != 1 && (uap->flags & MNT_UNION) == 0) { |
fc2aed1e | 97 | vput(vp); |
8429d022 | 98 | return (EBUSY); |
fc2aed1e | 99 | } |
c05286bd | 100 | if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) |
09d2ef1a | 101 | return (error); |
fc2aed1e KM |
102 | if (vp->v_type != VDIR) { |
103 | vput(vp); | |
8429d022 | 104 | return (ENOTDIR); |
fc2aed1e | 105 | } |
7121fdf0 | 106 | if ((u_long)uap->type > MOUNT_MAXTYPE || vfssw[uap->type] == NULL) { |
fc2aed1e | 107 | vput(vp); |
8429d022 | 108 | return (ENODEV); |
fc2aed1e KM |
109 | } |
110 | ||
111 | /* | |
d48157d5 | 112 | * Allocate and initialize the file system. |
fc2aed1e KM |
113 | */ |
114 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
115 | M_MOUNT, M_WAITOK); | |
b1341251 | 116 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 117 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
118 | if (error = vfs_lock(mp)) { |
119 | free((caddr_t)mp, M_MOUNT); | |
120 | vput(vp); | |
8429d022 | 121 | return (error); |
d48157d5 | 122 | } |
7121fdf0 | 123 | if (vp->v_mountedhere != NULL) { |
d48157d5 KM |
124 | vfs_unlock(mp); |
125 | free((caddr_t)mp, M_MOUNT); | |
126 | vput(vp); | |
8429d022 | 127 | return (EBUSY); |
d48157d5 | 128 | } |
d48157d5 | 129 | vp->v_mountedhere = mp; |
54fb9dc2 | 130 | mp->mnt_vnodecovered = vp; |
d48157d5 KM |
131 | update: |
132 | /* | |
133 | * Set the mount level flags. | |
134 | */ | |
54fb9dc2 KM |
135 | if (uap->flags & MNT_RDONLY) |
136 | mp->mnt_flag |= MNT_RDONLY; | |
db62a40f KM |
137 | else if (mp->mnt_flag & MNT_RDONLY) |
138 | mp->mnt_flag |= MNT_WANTRDWR; | |
ac85da8a KM |
139 | mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | |
140 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
141 | mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | | |
142 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
d48157d5 KM |
143 | /* |
144 | * Mount the filesystem. | |
145 | */ | |
7121fdf0 | 146 | error = VFS_MOUNT(mp, uap->path, uap->data, &nd, p); |
54fb9dc2 | 147 | if (mp->mnt_flag & MNT_UPDATE) { |
d48157d5 | 148 | vrele(vp); |
db62a40f KM |
149 | if (mp->mnt_flag & MNT_WANTRDWR) |
150 | mp->mnt_flag &= ~MNT_RDONLY; | |
151 | mp->mnt_flag &=~ | |
152 | (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); | |
47971887 | 153 | if (error) |
54fb9dc2 | 154 | mp->mnt_flag = flag; |
8429d022 | 155 | return (error); |
d48157d5 | 156 | } |
92d0de98 KM |
157 | /* |
158 | * Put the new filesystem on the mount list after root. | |
159 | */ | |
fc2aed1e | 160 | cache_purge(vp); |
fc2aed1e | 161 | if (!error) { |
0f66cdec | 162 | TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); |
d48157d5 | 163 | VOP_UNLOCK(vp); |
fc2aed1e | 164 | vfs_unlock(mp); |
2c69fe14 | 165 | error = VFS_START(mp, 0, p); |
fc2aed1e | 166 | } else { |
0f66cdec KM |
167 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; |
168 | vfs_unlock(mp); | |
fc2aed1e | 169 | free((caddr_t)mp, M_MOUNT); |
d48157d5 | 170 | vput(vp); |
fc2aed1e | 171 | } |
8429d022 | 172 | return (error); |
3e78e260 BJ |
173 | } |
174 | ||
4f083fd7 | 175 | /* |
7121fdf0 | 176 | * Unmount a file system. |
fc2aed1e KM |
177 | * |
178 | * Note: unmount takes a path to the vnode mounted on as argument, | |
179 | * not special file (as before). | |
4f083fd7 | 180 | */ |
9e97623a | 181 | struct unmount_args { |
7121fdf0 | 182 | char *path; |
9e97623a CT |
183 | int flags; |
184 | }; | |
6a6a1e5f KM |
185 | /* ARGSUSED */ |
186 | unmount(p, uap, retval) | |
5e00df3b | 187 | struct proc *p; |
9e97623a | 188 | register struct unmount_args *uap; |
6a6a1e5f KM |
189 | int *retval; |
190 | { | |
fc2aed1e | 191 | register struct vnode *vp; |
9151110e | 192 | struct mount *mp; |
fc2aed1e | 193 | int error; |
8429d022 | 194 | struct nameidata nd; |
fc2aed1e KM |
195 | |
196 | /* | |
197 | * Must be super user | |
198 | */ | |
8429d022 MK |
199 | if (error = suser(p->p_ucred, &p->p_acflag)) |
200 | return (error); | |
fc2aed1e | 201 | |
7121fdf0 | 202 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 203 | if (error = namei(&nd)) |
8429d022 | 204 | return (error); |
dd4c01c2 | 205 | vp = nd.ni_vp; |
fc2aed1e KM |
206 | /* |
207 | * Must be the root of the filesystem | |
208 | */ | |
209 | if ((vp->v_flag & VROOT) == 0) { | |
210 | vput(vp); | |
8429d022 | 211 | return (EINVAL); |
fc2aed1e KM |
212 | } |
213 | mp = vp->v_mount; | |
214 | vput(vp); | |
2c69fe14 | 215 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
216 | } |
217 | ||
218 | /* | |
7121fdf0 | 219 | * Do the actual file system unmount. |
9151110e | 220 | */ |
2c69fe14 | 221 | dounmount(mp, flags, p) |
9151110e KM |
222 | register struct mount *mp; |
223 | int flags; | |
2c69fe14 | 224 | struct proc *p; |
9151110e KM |
225 | { |
226 | struct vnode *coveredvp; | |
227 | int error; | |
228 | ||
54fb9dc2 | 229 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
230 | if (vfs_busy(mp)) |
231 | return (EBUSY); | |
54fb9dc2 | 232 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 233 | if (error = vfs_lock(mp)) |
9151110e | 234 | return (error); |
fc2aed1e | 235 | |
9db58063 | 236 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 237 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
238 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
239 | (flags & MNT_FORCE)) | |
2c69fe14 | 240 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 241 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 242 | vfs_unbusy(mp); |
fc2aed1e KM |
243 | if (error) { |
244 | vfs_unlock(mp); | |
245 | } else { | |
246 | vrele(coveredvp); | |
0f66cdec KM |
247 | TAILQ_REMOVE(&mountlist, mp, mnt_list); |
248 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; | |
249 | vfs_unlock(mp); | |
250 | if (mp->mnt_vnodelist.lh_first != NULL) | |
ea2761aa | 251 | panic("unmount: dangling vnode"); |
fc2aed1e KM |
252 | free((caddr_t)mp, M_MOUNT); |
253 | } | |
9151110e | 254 | return (error); |
fc2aed1e KM |
255 | } |
256 | ||
257 | /* | |
fc2aed1e KM |
258 | * Sync each mounted filesystem. |
259 | */ | |
0649728d KM |
260 | #ifdef DIAGNOSTIC |
261 | int syncprt = 0; | |
6aecdd4c | 262 | struct ctldebug debug0 = { "syncprt", &syncprt }; |
0649728d KM |
263 | #endif |
264 | ||
9e97623a CT |
265 | struct sync_args { |
266 | int dummy; | |
267 | }; | |
ff4fb102 | 268 | /* ARGSUSED */ |
6a6a1e5f | 269 | sync(p, uap, retval) |
5e00df3b | 270 | struct proc *p; |
9e97623a | 271 | struct sync_args *uap; |
6a6a1e5f | 272 | int *retval; |
3e78e260 | 273 | { |
0f66cdec | 274 | register struct mount *mp, *nmp; |
fc2aed1e | 275 | |
0f66cdec KM |
276 | for (mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
277 | nmp = mp->mnt_list.tqe_next; | |
62e35d50 KM |
278 | /* |
279 | * The lock check below is to avoid races with mount | |
280 | * and unmount. | |
281 | */ | |
54fb9dc2 | 282 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 283 | !vfs_busy(mp)) { |
09d2ef1a | 284 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
0f66cdec KM |
285 | vfs_unbusy(mp); |
286 | } | |
287 | } | |
0649728d KM |
288 | #ifdef DIAGNOSTIC |
289 | if (syncprt) | |
290 | vfs_bufstats(); | |
291 | #endif /* DIAGNOSTIC */ | |
78eeb014 | 292 | return (0); |
fc2aed1e KM |
293 | } |
294 | ||
c001b1c3 | 295 | /* |
7121fdf0 | 296 | * Change filesystem quotas. |
c001b1c3 | 297 | */ |
9e97623a CT |
298 | struct quotactl_args { |
299 | char *path; | |
300 | int cmd; | |
301 | int uid; | |
302 | caddr_t arg; | |
303 | }; | |
6a6a1e5f KM |
304 | /* ARGSUSED */ |
305 | quotactl(p, uap, retval) | |
5e00df3b | 306 | struct proc *p; |
9e97623a | 307 | register struct quotactl_args *uap; |
6a6a1e5f KM |
308 | int *retval; |
309 | { | |
c001b1c3 | 310 | register struct mount *mp; |
c001b1c3 | 311 | int error; |
8429d022 | 312 | struct nameidata nd; |
c001b1c3 | 313 | |
dd4c01c2 KM |
314 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
315 | if (error = namei(&nd)) | |
8429d022 | 316 | return (error); |
dd4c01c2 KM |
317 | mp = nd.ni_vp->v_mount; |
318 | vrele(nd.ni_vp); | |
2c69fe14 | 319 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
320 | } |
321 | ||
fc2aed1e | 322 | /* |
d4ed1dcd | 323 | * Get filesystem statistics. |
fc2aed1e | 324 | */ |
9e97623a CT |
325 | struct statfs_args { |
326 | char *path; | |
327 | struct statfs *buf; | |
328 | }; | |
6a6a1e5f KM |
329 | /* ARGSUSED */ |
330 | statfs(p, uap, retval) | |
5e00df3b | 331 | struct proc *p; |
9e97623a | 332 | register struct statfs_args *uap; |
6a6a1e5f KM |
333 | int *retval; |
334 | { | |
3f705640 | 335 | register struct mount *mp; |
62e35d50 | 336 | register struct statfs *sp; |
fc2aed1e | 337 | int error; |
8429d022 | 338 | struct nameidata nd; |
3e78e260 | 339 | |
dd4c01c2 KM |
340 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
341 | if (error = namei(&nd)) | |
8429d022 | 342 | return (error); |
dd4c01c2 | 343 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 344 | sp = &mp->mnt_stat; |
dd4c01c2 | 345 | vrele(nd.ni_vp); |
2c69fe14 | 346 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 347 | return (error); |
54fb9dc2 | 348 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 349 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
350 | } |
351 | ||
6a6a1e5f | 352 | /* |
d4ed1dcd | 353 | * Get filesystem statistics. |
6a6a1e5f | 354 | */ |
9e97623a CT |
355 | struct fstatfs_args { |
356 | int fd; | |
357 | struct statfs *buf; | |
358 | }; | |
6a6a1e5f KM |
359 | /* ARGSUSED */ |
360 | fstatfs(p, uap, retval) | |
5e00df3b | 361 | struct proc *p; |
9e97623a | 362 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
363 | int *retval; |
364 | { | |
fc2aed1e | 365 | struct file *fp; |
3f705640 | 366 | struct mount *mp; |
62e35d50 | 367 | register struct statfs *sp; |
fc2aed1e KM |
368 | int error; |
369 | ||
5e00df3b | 370 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 371 | return (error); |
3f705640 | 372 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 373 | sp = &mp->mnt_stat; |
2c69fe14 | 374 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 375 | return (error); |
54fb9dc2 | 376 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 377 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
378 | } |
379 | ||
bfcdbfbf | 380 | /* |
d4ed1dcd | 381 | * Get statistics on all filesystems. |
bfcdbfbf | 382 | */ |
9e97623a CT |
383 | struct getfsstat_args { |
384 | struct statfs *buf; | |
385 | long bufsize; | |
386 | int flags; | |
387 | }; | |
6a6a1e5f | 388 | getfsstat(p, uap, retval) |
5e00df3b | 389 | struct proc *p; |
9e97623a | 390 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
391 | int *retval; |
392 | { | |
0f66cdec | 393 | register struct mount *mp, *nmp; |
62e35d50 | 394 | register struct statfs *sp; |
f62fad9a | 395 | caddr_t sfsp; |
bfcdbfbf KM |
396 | long count, maxcount, error; |
397 | ||
398 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 399 | sfsp = (caddr_t)uap->buf; |
0f66cdec KM |
400 | for (count = 0, mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
401 | nmp = mp->mnt_list.tqe_next; | |
54fb9dc2 KM |
402 | if (sfsp && count < maxcount && |
403 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
404 | sp = &mp->mnt_stat; | |
62e35d50 KM |
405 | /* |
406 | * If MNT_NOWAIT is specified, do not refresh the | |
407 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
408 | */ | |
409 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
410 | (uap->flags & MNT_WAIT)) && | |
0f66cdec | 411 | (error = VFS_STATFS(mp, sp, p))) |
fd8516be | 412 | continue; |
54fb9dc2 | 413 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 414 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 415 | return (error); |
62e35d50 | 416 | sfsp += sizeof(*sp); |
bfcdbfbf | 417 | } |
f62fad9a | 418 | count++; |
0f66cdec | 419 | } |
bfcdbfbf | 420 | if (sfsp && count > maxcount) |
6a6a1e5f | 421 | *retval = maxcount; |
bfcdbfbf | 422 | else |
6a6a1e5f | 423 | *retval = count; |
8429d022 | 424 | return (0); |
bfcdbfbf KM |
425 | } |
426 | ||
6995a2cb KM |
427 | /* |
428 | * Change current working directory to a given file descriptor. | |
429 | */ | |
9e97623a CT |
430 | struct fchdir_args { |
431 | int fd; | |
432 | }; | |
6a6a1e5f KM |
433 | /* ARGSUSED */ |
434 | fchdir(p, uap, retval) | |
5e00df3b | 435 | struct proc *p; |
9e97623a | 436 | struct fchdir_args *uap; |
6a6a1e5f KM |
437 | int *retval; |
438 | { | |
5e00df3b | 439 | register struct filedesc *fdp = p->p_fd; |
6995a2cb KM |
440 | register struct vnode *vp; |
441 | struct file *fp; | |
442 | int error; | |
443 | ||
5e00df3b | 444 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 445 | return (error); |
6995a2cb KM |
446 | vp = (struct vnode *)fp->f_data; |
447 | VOP_LOCK(vp); | |
448 | if (vp->v_type != VDIR) | |
449 | error = ENOTDIR; | |
450 | else | |
2c69fe14 | 451 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
6995a2cb | 452 | VOP_UNLOCK(vp); |
ab214c34 | 453 | if (error) |
8429d022 | 454 | return (error); |
ab214c34 | 455 | VREF(vp); |
5e00df3b KM |
456 | vrele(fdp->fd_cdir); |
457 | fdp->fd_cdir = vp; | |
8429d022 | 458 | return (0); |
6995a2cb KM |
459 | } |
460 | ||
4f083fd7 | 461 | /* |
fc2aed1e | 462 | * Change current working directory (``.''). |
4f083fd7 | 463 | */ |
9e97623a | 464 | struct chdir_args { |
7121fdf0 | 465 | char *path; |
9e97623a | 466 | }; |
6a6a1e5f KM |
467 | /* ARGSUSED */ |
468 | chdir(p, uap, retval) | |
5e00df3b | 469 | struct proc *p; |
9e97623a | 470 | struct chdir_args *uap; |
6a6a1e5f KM |
471 | int *retval; |
472 | { | |
5e00df3b | 473 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 474 | int error; |
8429d022 | 475 | struct nameidata nd; |
3e78e260 | 476 | |
7121fdf0 KB |
477 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
478 | if (error = change_dir(&nd, p)) | |
8429d022 | 479 | return (error); |
5e00df3b | 480 | vrele(fdp->fd_cdir); |
dd4c01c2 | 481 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 482 | return (0); |
fc2aed1e KM |
483 | } |
484 | ||
485 | /* | |
486 | * Change notion of root (``/'') directory. | |
487 | */ | |
9e97623a | 488 | struct chroot_args { |
7121fdf0 | 489 | char *path; |
9e97623a | 490 | }; |
6a6a1e5f KM |
491 | /* ARGSUSED */ |
492 | chroot(p, uap, retval) | |
5e00df3b | 493 | struct proc *p; |
9e97623a | 494 | struct chroot_args *uap; |
6a6a1e5f KM |
495 | int *retval; |
496 | { | |
5e00df3b | 497 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 498 | int error; |
8429d022 | 499 | struct nameidata nd; |
fc2aed1e | 500 | |
8429d022 MK |
501 | if (error = suser(p->p_ucred, &p->p_acflag)) |
502 | return (error); | |
7121fdf0 KB |
503 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
504 | if (error = change_dir(&nd, p)) | |
8429d022 | 505 | return (error); |
5e00df3b KM |
506 | if (fdp->fd_rdir != NULL) |
507 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 508 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 509 | return (0); |
fc2aed1e KM |
510 | } |
511 | ||
512 | /* | |
513 | * Common routine for chroot and chdir. | |
514 | */ | |
7121fdf0 KB |
515 | static int |
516 | change_dir(ndp, p) | |
dd4c01c2 | 517 | register struct nameidata *ndp; |
8429d022 | 518 | struct proc *p; |
fc2aed1e KM |
519 | { |
520 | struct vnode *vp; | |
521 | int error; | |
522 | ||
dd4c01c2 | 523 | if (error = namei(ndp)) |
fc2aed1e KM |
524 | return (error); |
525 | vp = ndp->ni_vp; | |
526 | if (vp->v_type != VDIR) | |
527 | error = ENOTDIR; | |
528 | else | |
2c69fe14 | 529 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
530 | VOP_UNLOCK(vp); |
531 | if (error) | |
532 | vrele(vp); | |
533 | return (error); | |
3e78e260 BJ |
534 | } |
535 | ||
536 | /* | |
6a6a1e5f KM |
537 | * Check permissions, allocate an open file structure, |
538 | * and call the device open routine if any. | |
3e78e260 | 539 | */ |
9e97623a | 540 | struct open_args { |
7121fdf0 KB |
541 | char *path; |
542 | int flags; | |
9e97623a | 543 | int mode; |
9e97623a | 544 | }; |
6a6a1e5f | 545 | open(p, uap, retval) |
5e00df3b | 546 | struct proc *p; |
9e97623a | 547 | register struct open_args *uap; |
6a6a1e5f | 548 | int *retval; |
3e78e260 | 549 | { |
5e00df3b | 550 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 551 | register struct file *fp; |
6aaf085a | 552 | register struct vnode *vp; |
7121fdf0 | 553 | int flags, cmode; |
fc2aed1e | 554 | struct file *nfp; |
ff8d1617 KM |
555 | int type, indx, error; |
556 | struct flock lf; | |
8429d022 | 557 | struct nameidata nd; |
fc2aed1e KM |
558 | extern struct fileops vnops; |
559 | ||
5e00df3b | 560 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 561 | return (error); |
fc2aed1e | 562 | fp = nfp; |
7121fdf0 KB |
563 | flags = FFLAGS(uap->flags); |
564 | cmode = ((uap->mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; | |
565 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); | |
03951846 | 566 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
7121fdf0 | 567 | if (error = vn_open(&nd, flags, cmode)) { |
336f999d | 568 | ffree(fp); |
f0e12026 KM |
569 | if ((error == ENODEV || error == ENXIO) && |
570 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
7121fdf0 KB |
571 | (error = |
572 | dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) { | |
6a6a1e5f | 573 | *retval = indx; |
8429d022 | 574 | return (0); |
6a6a1e5f | 575 | } |
b10521d6 KM |
576 | if (error == ERESTART) |
577 | error = EINTR; | |
78eeb014 | 578 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 579 | return (error); |
528f664c | 580 | } |
da5acac3 | 581 | p->p_dupfd = 0; |
dd4c01c2 | 582 | vp = nd.ni_vp; |
7121fdf0 | 583 | fp->f_flag = flags & FMASK; |
8932276d KM |
584 | fp->f_type = DTYPE_VNODE; |
585 | fp->f_ops = &vnops; | |
586 | fp->f_data = (caddr_t)vp; | |
7121fdf0 | 587 | if (flags & (O_EXLOCK | O_SHLOCK)) { |
ff8d1617 KM |
588 | lf.l_whence = SEEK_SET; |
589 | lf.l_start = 0; | |
590 | lf.l_len = 0; | |
7121fdf0 | 591 | if (flags & O_EXLOCK) |
ff8d1617 KM |
592 | lf.l_type = F_WRLCK; |
593 | else | |
594 | lf.l_type = F_RDLCK; | |
595 | type = F_FLOCK; | |
7121fdf0 | 596 | if ((flags & FNONBLOCK) == 0) |
ff8d1617 | 597 | type |= F_WAIT; |
6aaf085a KM |
598 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
599 | VOP_UNLOCK(vp); | |
600 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); | |
336f999d | 601 | ffree(fp); |
ff8d1617 KM |
602 | fdp->fd_ofiles[indx] = NULL; |
603 | return (error); | |
604 | } | |
b40ecf6f | 605 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 606 | } |
6aaf085a | 607 | VOP_UNLOCK(vp); |
6a6a1e5f | 608 | *retval = indx; |
8429d022 | 609 | return (0); |
3e78e260 BJ |
610 | } |
611 | ||
4fde03dc | 612 | #ifdef COMPAT_43 |
3e78e260 | 613 | /* |
7121fdf0 | 614 | * Create a file. |
3e78e260 | 615 | */ |
9e97623a | 616 | struct ocreat_args { |
7121fdf0 KB |
617 | char *path; |
618 | int mode; | |
9e97623a | 619 | }; |
4fde03dc | 620 | ocreat(p, uap, retval) |
6a6a1e5f | 621 | struct proc *p; |
9e97623a | 622 | register struct ocreat_args *uap; |
6a6a1e5f | 623 | int *retval; |
3e78e260 | 624 | { |
9e97623a | 625 | struct open_args openuap; |
6a6a1e5f | 626 | |
7121fdf0 KB |
627 | openuap.path = uap->path; |
628 | openuap.mode = uap->mode; | |
629 | openuap.flags = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 630 | return (open(p, &openuap, retval)); |
6a6a1e5f | 631 | } |
4fde03dc | 632 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
633 | |
634 | /* | |
7121fdf0 | 635 | * Create a special file. |
6a6a1e5f | 636 | */ |
9e97623a | 637 | struct mknod_args { |
7121fdf0 KB |
638 | char *path; |
639 | int mode; | |
9e97623a CT |
640 | int dev; |
641 | }; | |
6a6a1e5f KM |
642 | /* ARGSUSED */ |
643 | mknod(p, uap, retval) | |
5e00df3b | 644 | struct proc *p; |
9e97623a | 645 | register struct mknod_args *uap; |
6a6a1e5f KM |
646 | int *retval; |
647 | { | |
fc2aed1e KM |
648 | register struct vnode *vp; |
649 | struct vattr vattr; | |
650 | int error; | |
8429d022 | 651 | struct nameidata nd; |
3e78e260 | 652 | |
a5368812 | 653 | CHECKPOINTREF; |
8429d022 MK |
654 | if (error = suser(p->p_ucred, &p->p_acflag)) |
655 | return (error); | |
7121fdf0 | 656 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 657 | if (error = namei(&nd)) |
8429d022 | 658 | return (error); |
dd4c01c2 | 659 | vp = nd.ni_vp; |
cf5ef508 | 660 | if (vp != NULL) |
fc2aed1e | 661 | error = EEXIST; |
cf5ef508 KB |
662 | else { |
663 | VATTR_NULL(&vattr); | |
664 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; | |
665 | vattr.va_rdev = uap->dev; | |
666 | ||
667 | switch (uap->mode & S_IFMT) { | |
668 | case S_IFMT: /* used by badsect to flag bad sectors */ | |
669 | vattr.va_type = VBAD; | |
670 | break; | |
671 | case S_IFCHR: | |
672 | vattr.va_type = VCHR; | |
673 | break; | |
674 | case S_IFBLK: | |
675 | vattr.va_type = VBLK; | |
676 | break; | |
677 | default: | |
678 | error = EINVAL; | |
679 | break; | |
680 | } | |
3e78e260 | 681 | } |
66955caf | 682 | if (!error) { |
dd4c01c2 KM |
683 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
684 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 685 | } else { |
dd4c01c2 KM |
686 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
687 | if (nd.ni_dvp == vp) | |
688 | vrele(nd.ni_dvp); | |
6c44e83b | 689 | else |
dd4c01c2 | 690 | vput(nd.ni_dvp); |
66955caf KM |
691 | if (vp) |
692 | vrele(vp); | |
693 | } | |
a5368812 | 694 | CHECKREFS("mknod"); |
8429d022 | 695 | return (error); |
3e78e260 BJ |
696 | } |
697 | ||
4751dd21 | 698 | /* |
7121fdf0 | 699 | * Create named pipe. |
4751dd21 | 700 | */ |
9e97623a | 701 | struct mkfifo_args { |
7121fdf0 KB |
702 | char *path; |
703 | int mode; | |
9e97623a | 704 | }; |
6a6a1e5f KM |
705 | /* ARGSUSED */ |
706 | mkfifo(p, uap, retval) | |
5e00df3b | 707 | struct proc *p; |
9e97623a | 708 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
709 | int *retval; |
710 | { | |
4751dd21 KM |
711 | struct vattr vattr; |
712 | int error; | |
8429d022 | 713 | struct nameidata nd; |
4751dd21 KM |
714 | |
715 | #ifndef FIFO | |
8429d022 | 716 | return (EOPNOTSUPP); |
4751dd21 | 717 | #else |
7121fdf0 | 718 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 719 | if (error = namei(&nd)) |
8429d022 | 720 | return (error); |
dd4c01c2 KM |
721 | if (nd.ni_vp != NULL) { |
722 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
723 | if (nd.ni_dvp == nd.ni_vp) | |
724 | vrele(nd.ni_dvp); | |
6c44e83b | 725 | else |
dd4c01c2 KM |
726 | vput(nd.ni_dvp); |
727 | vrele(nd.ni_vp); | |
8429d022 | 728 | return (EEXIST); |
4751dd21 | 729 | } |
3658f091 KB |
730 | VATTR_NULL(&vattr); |
731 | vattr.va_type = VFIFO; | |
7121fdf0 | 732 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
733 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
734 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
735 | #endif /* FIFO */ |
736 | } | |
737 | ||
3e78e260 | 738 | /* |
7121fdf0 | 739 | * Make a hard file link. |
3e78e260 | 740 | */ |
9e97623a | 741 | struct link_args { |
7121fdf0 KB |
742 | char *path; |
743 | char *link; | |
9e97623a | 744 | }; |
6a6a1e5f KM |
745 | /* ARGSUSED */ |
746 | link(p, uap, retval) | |
5e00df3b | 747 | struct proc *p; |
9e97623a | 748 | register struct link_args *uap; |
6a6a1e5f KM |
749 | int *retval; |
750 | { | |
7121fdf0 | 751 | register struct vnode *vp; |
8429d022 | 752 | struct nameidata nd; |
7121fdf0 | 753 | int error; |
3e78e260 | 754 | |
a5368812 | 755 | CHECKPOINTREF; |
7121fdf0 | 756 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 757 | if (error = namei(&nd)) |
8429d022 | 758 | return (error); |
dd4c01c2 | 759 | vp = nd.ni_vp; |
cf5ef508 KB |
760 | if (vp->v_type != VDIR || |
761 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
762 | nd.ni_cnd.cn_nameiop = CREATE; | |
763 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
764 | nd.ni_dirp = uap->link; | |
765 | if ((error = namei(&nd)) == 0) { | |
766 | if (nd.ni_vp != NULL) | |
767 | error = EEXIST; | |
768 | if (!error) { | |
769 | LEASE_CHECK(nd.ni_dvp, | |
770 | p, p->p_ucred, LEASE_WRITE); | |
771 | LEASE_CHECK(vp, | |
772 | p, p->p_ucred, LEASE_WRITE); | |
773 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); | |
774 | } else { | |
775 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
776 | if (nd.ni_dvp == nd.ni_vp) | |
777 | vrele(nd.ni_dvp); | |
778 | else | |
779 | vput(nd.ni_dvp); | |
780 | if (nd.ni_vp) | |
781 | vrele(nd.ni_vp); | |
782 | } | |
783 | } | |
66955caf | 784 | } |
cf5ef508 | 785 | vrele(vp); |
a5368812 | 786 | CHECKREFS("link"); |
8429d022 | 787 | return (error); |
3e78e260 BJ |
788 | } |
789 | ||
790 | /* | |
d4ed1dcd | 791 | * Make a symbolic link. |
3e78e260 | 792 | */ |
9e97623a | 793 | struct symlink_args { |
7121fdf0 KB |
794 | char *path; |
795 | char *link; | |
9e97623a | 796 | }; |
6a6a1e5f KM |
797 | /* ARGSUSED */ |
798 | symlink(p, uap, retval) | |
5e00df3b | 799 | struct proc *p; |
9e97623a | 800 | register struct symlink_args *uap; |
6a6a1e5f KM |
801 | int *retval; |
802 | { | |
fc2aed1e | 803 | struct vattr vattr; |
7121fdf0 | 804 | char *path; |
fc2aed1e | 805 | int error; |
8429d022 | 806 | struct nameidata nd; |
3e78e260 | 807 | |
a5368812 | 808 | CHECKPOINTREF; |
7121fdf0 KB |
809 | MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
810 | if (error = copyinstr(uap->path, path, MAXPATHLEN, NULL)) | |
66955caf | 811 | goto out; |
7121fdf0 | 812 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->link, p); |
dd4c01c2 | 813 | if (error = namei(&nd)) |
66955caf | 814 | goto out; |
dd4c01c2 KM |
815 | if (nd.ni_vp) { |
816 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
817 | if (nd.ni_dvp == nd.ni_vp) | |
818 | vrele(nd.ni_dvp); | |
6c44e83b | 819 | else |
dd4c01c2 KM |
820 | vput(nd.ni_dvp); |
821 | vrele(nd.ni_vp); | |
fc2aed1e KM |
822 | error = EEXIST; |
823 | goto out; | |
3e78e260 | 824 | } |
3ee1461b | 825 | VATTR_NULL(&vattr); |
7121fdf0 | 826 | vattr.va_mode = ACCESSPERMS &~ p->p_fd->fd_cmask; |
dd4c01c2 | 827 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
7121fdf0 | 828 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, path); |
fc2aed1e | 829 | out: |
7121fdf0 | 830 | FREE(path, M_NAMEI); |
a5368812 | 831 | CHECKREFS("symlink"); |
8429d022 | 832 | return (error); |
3e78e260 BJ |
833 | } |
834 | ||
835 | /* | |
d4ed1dcd | 836 | * Delete a name from the filesystem. |
3e78e260 | 837 | */ |
9e97623a | 838 | struct unlink_args { |
7121fdf0 | 839 | char *path; |
9e97623a | 840 | }; |
6a6a1e5f KM |
841 | /* ARGSUSED */ |
842 | unlink(p, uap, retval) | |
5e00df3b | 843 | struct proc *p; |
9e97623a | 844 | struct unlink_args *uap; |
6a6a1e5f KM |
845 | int *retval; |
846 | { | |
fc2aed1e KM |
847 | register struct vnode *vp; |
848 | int error; | |
8429d022 | 849 | struct nameidata nd; |
3e78e260 | 850 | |
a5368812 | 851 | CHECKPOINTREF; |
7121fdf0 | 852 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 853 | if (error = namei(&nd)) |
8429d022 | 854 | return (error); |
dd4c01c2 | 855 | vp = nd.ni_vp; |
dbcf7de6 KM |
856 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
857 | VOP_LOCK(vp); | |
7121fdf0 | 858 | |
cf5ef508 KB |
859 | if (vp->v_type != VDIR || |
860 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
861 | /* | |
862 | * The root of a mounted filesystem cannot be deleted. | |
863 | */ | |
864 | if (vp->v_flag & VROOT) | |
865 | error = EBUSY; | |
866 | else | |
867 | (void)vnode_pager_uncache(vp); | |
868 | } | |
869 | ||
870 | if (!error) { | |
dd4c01c2 | 871 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 872 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 873 | } else { |
dd4c01c2 KM |
874 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
875 | if (nd.ni_dvp == vp) | |
876 | vrele(nd.ni_dvp); | |
6c44e83b | 877 | else |
dd4c01c2 | 878 | vput(nd.ni_dvp); |
66955caf KM |
879 | vput(vp); |
880 | } | |
a5368812 | 881 | CHECKREFS("unlink"); |
8429d022 | 882 | return (error); |
3e78e260 BJ |
883 | } |
884 | ||
7121fdf0 KB |
885 | /* |
886 | * Reposition read/write file offset. | |
887 | */ | |
95c0eb1e | 888 | struct lseek_args { |
7121fdf0 | 889 | int fd; |
2f2b3b3d | 890 | int pad; |
7121fdf0 KB |
891 | off_t offset; |
892 | int whence; | |
2f2b3b3d | 893 | }; |
201e5411 | 894 | lseek(p, uap, retval) |
5e00df3b | 895 | struct proc *p; |
95c0eb1e | 896 | register struct lseek_args *uap; |
9e97623a | 897 | int *retval; |
6a6a1e5f | 898 | { |
8429d022 | 899 | struct ucred *cred = p->p_ucred; |
5e00df3b | 900 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 901 | register struct file *fp; |
fc2aed1e KM |
902 | struct vattr vattr; |
903 | int error; | |
904 | ||
7121fdf0 KB |
905 | if ((u_int)uap->fd >= fdp->fd_nfiles || |
906 | (fp = fdp->fd_ofiles[uap->fd]) == NULL) | |
8429d022 | 907 | return (EBADF); |
fc2aed1e | 908 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 909 | return (ESPIPE); |
7121fdf0 | 910 | switch (uap->whence) { |
b4d1aee9 | 911 | case L_INCR: |
7121fdf0 | 912 | fp->f_offset += uap->offset; |
b4d1aee9 | 913 | break; |
b4d1aee9 | 914 | case L_XTND: |
7121fdf0 KB |
915 | if (error = |
916 | VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p)) | |
8429d022 | 917 | return (error); |
7121fdf0 | 918 | fp->f_offset = uap->offset + vattr.va_size; |
b4d1aee9 | 919 | break; |
b4d1aee9 | 920 | case L_SET: |
7121fdf0 | 921 | fp->f_offset = uap->offset; |
b4d1aee9 | 922 | break; |
b4d1aee9 | 923 | default: |
8429d022 | 924 | return (EINVAL); |
b4d1aee9 | 925 | } |
9e97623a | 926 | *(off_t *)retval = fp->f_offset; |
8429d022 | 927 | return (0); |
3e78e260 BJ |
928 | } |
929 | ||
201e5411 | 930 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
64deb204 | 931 | /* |
7121fdf0 | 932 | * Reposition read/write file offset. |
64deb204 | 933 | */ |
95c0eb1e | 934 | struct olseek_args { |
7121fdf0 KB |
935 | int fd; |
936 | long offset; | |
937 | int whence; | |
64deb204 | 938 | }; |
201e5411 | 939 | olseek(p, uap, retval) |
64deb204 | 940 | struct proc *p; |
95c0eb1e | 941 | register struct olseek_args *uap; |
64deb204 KM |
942 | int *retval; |
943 | { | |
95c0eb1e | 944 | struct lseek_args nuap; |
64deb204 KM |
945 | off_t qret; |
946 | int error; | |
947 | ||
7121fdf0 KB |
948 | nuap.fd = uap->fd; |
949 | nuap.offset = uap->offset; | |
950 | nuap.whence = uap->whence; | |
95c0eb1e | 951 | error = lseek(p, &nuap, &qret); |
64deb204 KM |
952 | *(long *)retval = qret; |
953 | return (error); | |
954 | } | |
201e5411 | 955 | #endif /* COMPAT_43 */ |
64deb204 | 956 | |
3e78e260 | 957 | /* |
d4ed1dcd | 958 | * Check access permissions. |
3e78e260 | 959 | */ |
b54e8954 | 960 | struct access_args { |
7121fdf0 KB |
961 | char *path; |
962 | int flags; | |
9e97623a | 963 | }; |
b54e8954 | 964 | access(p, uap, retval) |
5e00df3b | 965 | struct proc *p; |
b54e8954 | 966 | register struct access_args *uap; |
6a6a1e5f KM |
967 | int *retval; |
968 | { | |
8429d022 | 969 | register struct ucred *cred = p->p_ucred; |
fc2aed1e | 970 | register struct vnode *vp; |
cf5ef508 | 971 | int error, flags, t_gid, t_uid; |
8429d022 | 972 | struct nameidata nd; |
3e78e260 | 973 | |
cf5ef508 KB |
974 | t_uid = cred->cr_uid; |
975 | t_gid = cred->cr_groups[0]; | |
8429d022 MK |
976 | cred->cr_uid = p->p_cred->p_ruid; |
977 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
7121fdf0 | 978 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 979 | if (error = namei(&nd)) |
fc2aed1e | 980 | goto out1; |
dd4c01c2 | 981 | vp = nd.ni_vp; |
7121fdf0 KB |
982 | |
983 | /* Flags == 0 means only check for existence. */ | |
984 | if (uap->flags) { | |
985 | flags = 0; | |
986 | if (uap->flags & R_OK) | |
987 | flags |= VREAD; | |
988 | if (uap->flags & W_OK) | |
989 | flags |= VWRITE; | |
990 | if (uap->flags & X_OK) | |
991 | flags |= VEXEC; | |
992 | if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) | |
993 | error = VOP_ACCESS(vp, flags, cred, p); | |
3e78e260 | 994 | } |
fc2aed1e KM |
995 | vput(vp); |
996 | out1: | |
cf5ef508 KB |
997 | cred->cr_uid = t_uid; |
998 | cred->cr_groups[0] = t_gid; | |
8429d022 | 999 | return (error); |
3e78e260 | 1000 | } |
d67a03eb | 1001 | |
8932276d | 1002 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1003 | /* |
7121fdf0 | 1004 | * Get file status; this version follows links. |
d67a03eb | 1005 | */ |
9e97623a | 1006 | struct ostat_args { |
7121fdf0 | 1007 | char *path; |
9e97623a CT |
1008 | struct ostat *ub; |
1009 | }; | |
6a6a1e5f | 1010 | /* ARGSUSED */ |
ae9b6dc3 | 1011 | ostat(p, uap, retval) |
be320a2b | 1012 | struct proc *p; |
9e97623a | 1013 | register struct ostat_args *uap; |
be320a2b KM |
1014 | int *retval; |
1015 | { | |
1016 | struct stat sb; | |
1017 | struct ostat osb; | |
1018 | int error; | |
1019 | struct nameidata nd; | |
1020 | ||
7121fdf0 | 1021 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1022 | if (error = namei(&nd)) |
1023 | return (error); | |
1024 | error = vn_stat(nd.ni_vp, &sb, p); | |
1025 | vput(nd.ni_vp); | |
1026 | if (error) | |
1027 | return (error); | |
1028 | cvtstat(&sb, &osb); | |
1029 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1030 | return (error); | |
1031 | } | |
1032 | ||
1033 | /* | |
7121fdf0 | 1034 | * Get file status; this version does not follow links. |
be320a2b | 1035 | */ |
9e97623a | 1036 | struct olstat_args { |
7121fdf0 | 1037 | char *path; |
9e97623a CT |
1038 | struct ostat *ub; |
1039 | }; | |
be320a2b | 1040 | /* ARGSUSED */ |
ae9b6dc3 | 1041 | olstat(p, uap, retval) |
be320a2b | 1042 | struct proc *p; |
9e97623a | 1043 | register struct olstat_args *uap; |
be320a2b KM |
1044 | int *retval; |
1045 | { | |
1046 | struct stat sb; | |
1047 | struct ostat osb; | |
1048 | int error; | |
1049 | struct nameidata nd; | |
1050 | ||
7121fdf0 | 1051 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1052 | if (error = namei(&nd)) |
1053 | return (error); | |
1054 | error = vn_stat(nd.ni_vp, &sb, p); | |
1055 | vput(nd.ni_vp); | |
1056 | if (error) | |
1057 | return (error); | |
1058 | cvtstat(&sb, &osb); | |
1059 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1060 | return (error); | |
1061 | } | |
1062 | ||
1063 | /* | |
7121fdf0 | 1064 | * Convert from an old to a new stat structure. |
be320a2b KM |
1065 | */ |
1066 | cvtstat(st, ost) | |
1067 | struct stat *st; | |
1068 | struct ostat *ost; | |
1069 | { | |
1070 | ||
1071 | ost->st_dev = st->st_dev; | |
1072 | ost->st_ino = st->st_ino; | |
1073 | ost->st_mode = st->st_mode; | |
1074 | ost->st_nlink = st->st_nlink; | |
1075 | ost->st_uid = st->st_uid; | |
1076 | ost->st_gid = st->st_gid; | |
1077 | ost->st_rdev = st->st_rdev; | |
1078 | if (st->st_size < (quad_t)1 << 32) | |
1079 | ost->st_size = st->st_size; | |
1080 | else | |
1081 | ost->st_size = -2; | |
1082 | ost->st_atime = st->st_atime; | |
1083 | ost->st_mtime = st->st_mtime; | |
1084 | ost->st_ctime = st->st_ctime; | |
1085 | ost->st_blksize = st->st_blksize; | |
1086 | ost->st_blocks = st->st_blocks; | |
1087 | ost->st_flags = st->st_flags; | |
1088 | ost->st_gen = st->st_gen; | |
1089 | } | |
8932276d | 1090 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1091 | |
1092 | /* | |
7121fdf0 | 1093 | * Get file status; this version follows links. |
be320a2b | 1094 | */ |
9e97623a | 1095 | struct stat_args { |
7121fdf0 | 1096 | char *path; |
9e97623a CT |
1097 | struct stat *ub; |
1098 | }; | |
be320a2b | 1099 | /* ARGSUSED */ |
ae9b6dc3 | 1100 | stat(p, uap, retval) |
5e00df3b | 1101 | struct proc *p; |
9e97623a | 1102 | register struct stat_args *uap; |
6a6a1e5f | 1103 | int *retval; |
d67a03eb | 1104 | { |
6a6a1e5f KM |
1105 | struct stat sb; |
1106 | int error; | |
8429d022 | 1107 | struct nameidata nd; |
d67a03eb | 1108 | |
7121fdf0 | 1109 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1110 | if (error = namei(&nd)) |
8429d022 | 1111 | return (error); |
dd4c01c2 KM |
1112 | error = vn_stat(nd.ni_vp, &sb, p); |
1113 | vput(nd.ni_vp); | |
6a6a1e5f | 1114 | if (error) |
8429d022 | 1115 | return (error); |
6a6a1e5f | 1116 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1117 | return (error); |
d67a03eb BJ |
1118 | } |
1119 | ||
5485e062 | 1120 | /* |
7121fdf0 | 1121 | * Get file status; this version does not follow links. |
5485e062 | 1122 | */ |
9e97623a | 1123 | struct lstat_args { |
7121fdf0 | 1124 | char *path; |
9e97623a CT |
1125 | struct stat *ub; |
1126 | }; | |
6a6a1e5f | 1127 | /* ARGSUSED */ |
ae9b6dc3 | 1128 | lstat(p, uap, retval) |
5e00df3b | 1129 | struct proc *p; |
9e97623a | 1130 | register struct lstat_args *uap; |
6a6a1e5f KM |
1131 | int *retval; |
1132 | { | |
fc2aed1e | 1133 | int error; |
49f762b8 KM |
1134 | struct vnode *vp, *dvp; |
1135 | struct stat sb, sb1; | |
8429d022 | 1136 | struct nameidata nd; |
5485e062 | 1137 | |
49f762b8 | 1138 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
7121fdf0 | 1139 | uap->path, p); |
dd4c01c2 | 1140 | if (error = namei(&nd)) |
8429d022 | 1141 | return (error); |
49f762b8 KM |
1142 | /* |
1143 | * For symbolic links, always return the attributes of its | |
1144 | * containing directory, except for mode, size, and links. | |
1145 | */ | |
1146 | vp = nd.ni_vp; | |
1147 | dvp = nd.ni_dvp; | |
1148 | if (vp->v_type != VLNK) { | |
1149 | if (dvp == vp) | |
1150 | vrele(dvp); | |
1151 | else | |
1152 | vput(dvp); | |
1153 | error = vn_stat(vp, &sb, p); | |
1154 | vput(vp); | |
1155 | if (error) | |
1156 | return (error); | |
1157 | } else { | |
1158 | error = vn_stat(dvp, &sb, p); | |
1159 | vput(dvp); | |
1160 | if (error) { | |
1161 | vput(vp); | |
1162 | return (error); | |
1163 | } | |
1164 | error = vn_stat(vp, &sb1, p); | |
1165 | vput(vp); | |
1166 | if (error) | |
1167 | return (error); | |
1168 | sb.st_mode &= ~S_IFDIR; | |
1169 | sb.st_mode |= S_IFLNK; | |
1170 | sb.st_nlink = sb1.st_nlink; | |
1171 | sb.st_size = sb1.st_size; | |
1172 | sb.st_blocks = sb1.st_blocks; | |
1173 | } | |
fc2aed1e | 1174 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1175 | return (error); |
d67a03eb BJ |
1176 | } |
1177 | ||
201e5411 | 1178 | /* |
7121fdf0 | 1179 | * Get configurable pathname variables. |
201e5411 KM |
1180 | */ |
1181 | struct pathconf_args { | |
7121fdf0 | 1182 | char *path; |
201e5411 KM |
1183 | int name; |
1184 | }; | |
1185 | /* ARGSUSED */ | |
1186 | pathconf(p, uap, retval) | |
1187 | struct proc *p; | |
1188 | register struct pathconf_args *uap; | |
1189 | int *retval; | |
1190 | { | |
1191 | int error; | |
1192 | struct nameidata nd; | |
1193 | ||
7121fdf0 | 1194 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
201e5411 KM |
1195 | if (error = namei(&nd)) |
1196 | return (error); | |
1197 | error = VOP_PATHCONF(nd.ni_vp, uap->name, retval); | |
1198 | vput(nd.ni_vp); | |
1199 | return (error); | |
1200 | } | |
1201 | ||
d67a03eb | 1202 | /* |
d4ed1dcd | 1203 | * Return target name of a symbolic link. |
5485e062 | 1204 | */ |
9e97623a | 1205 | struct readlink_args { |
7121fdf0 | 1206 | char *path; |
9e97623a CT |
1207 | char *buf; |
1208 | int count; | |
1209 | }; | |
6a6a1e5f KM |
1210 | /* ARGSUSED */ |
1211 | readlink(p, uap, retval) | |
5e00df3b | 1212 | struct proc *p; |
9e97623a | 1213 | register struct readlink_args *uap; |
6a6a1e5f KM |
1214 | int *retval; |
1215 | { | |
fc2aed1e KM |
1216 | register struct vnode *vp; |
1217 | struct iovec aiov; | |
1218 | struct uio auio; | |
1219 | int error; | |
8429d022 | 1220 | struct nameidata nd; |
5485e062 | 1221 | |
a5368812 | 1222 | CHECKPOINTREF; |
7121fdf0 | 1223 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1224 | if (error = namei(&nd)) |
8429d022 | 1225 | return (error); |
dd4c01c2 | 1226 | vp = nd.ni_vp; |
7121fdf0 | 1227 | if (vp->v_type != VLNK) |
fc2aed1e | 1228 | error = EINVAL; |
7121fdf0 KB |
1229 | else { |
1230 | aiov.iov_base = uap->buf; | |
1231 | aiov.iov_len = uap->count; | |
1232 | auio.uio_iov = &aiov; | |
1233 | auio.uio_iovcnt = 1; | |
1234 | auio.uio_offset = 0; | |
1235 | auio.uio_rw = UIO_READ; | |
1236 | auio.uio_segflg = UIO_USERSPACE; | |
1237 | auio.uio_procp = p; | |
1238 | auio.uio_resid = uap->count; | |
1239 | error = VOP_READLINK(vp, &auio, p->p_ucred); | |
5485e062 | 1240 | } |
fc2aed1e | 1241 | vput(vp); |
6a6a1e5f | 1242 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1243 | CHECKREFS("readlink"); |
8429d022 | 1244 | return (error); |
5485e062 BJ |
1245 | } |
1246 | ||
6995a2cb | 1247 | /* |
7121fdf0 | 1248 | * Change flags of a file given a path name. |
6995a2cb | 1249 | */ |
9e97623a | 1250 | struct chflags_args { |
7121fdf0 | 1251 | char *path; |
9e97623a CT |
1252 | int flags; |
1253 | }; | |
6a6a1e5f KM |
1254 | /* ARGSUSED */ |
1255 | chflags(p, uap, retval) | |
5e00df3b | 1256 | struct proc *p; |
9e97623a | 1257 | register struct chflags_args *uap; |
6a6a1e5f KM |
1258 | int *retval; |
1259 | { | |
6995a2cb KM |
1260 | register struct vnode *vp; |
1261 | struct vattr vattr; | |
1262 | int error; | |
8429d022 | 1263 | struct nameidata nd; |
6995a2cb | 1264 | |
7121fdf0 | 1265 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1266 | if (error = namei(&nd)) |
8429d022 | 1267 | return (error); |
dd4c01c2 | 1268 | vp = nd.ni_vp; |
dbcf7de6 KM |
1269 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1270 | VOP_LOCK(vp); | |
7121fdf0 | 1271 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1272 | error = EROFS; |
7121fdf0 KB |
1273 | else { |
1274 | VATTR_NULL(&vattr); | |
1275 | vattr.va_flags = uap->flags; | |
1276 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1277 | } |
6995a2cb | 1278 | vput(vp); |
8429d022 | 1279 | return (error); |
6995a2cb KM |
1280 | } |
1281 | ||
1282 | /* | |
1283 | * Change flags of a file given a file descriptor. | |
1284 | */ | |
9e97623a CT |
1285 | struct fchflags_args { |
1286 | int fd; | |
1287 | int flags; | |
1288 | }; | |
6a6a1e5f KM |
1289 | /* ARGSUSED */ |
1290 | fchflags(p, uap, retval) | |
5e00df3b | 1291 | struct proc *p; |
9e97623a | 1292 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1293 | int *retval; |
1294 | { | |
6995a2cb KM |
1295 | struct vattr vattr; |
1296 | struct vnode *vp; | |
1297 | struct file *fp; | |
1298 | int error; | |
1299 | ||
5e00df3b | 1300 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1301 | return (error); |
6995a2cb | 1302 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1303 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1304 | VOP_LOCK(vp); |
7121fdf0 | 1305 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1306 | error = EROFS; |
7121fdf0 KB |
1307 | else { |
1308 | VATTR_NULL(&vattr); | |
1309 | vattr.va_flags = uap->flags; | |
1310 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1311 | } |
6995a2cb | 1312 | VOP_UNLOCK(vp); |
8429d022 | 1313 | return (error); |
6995a2cb KM |
1314 | } |
1315 | ||
4f083fd7 SL |
1316 | /* |
1317 | * Change mode of a file given path name. | |
1318 | */ | |
9e97623a | 1319 | struct chmod_args { |
7121fdf0 KB |
1320 | char *path; |
1321 | int mode; | |
9e97623a | 1322 | }; |
6a6a1e5f KM |
1323 | /* ARGSUSED */ |
1324 | chmod(p, uap, retval) | |
5e00df3b | 1325 | struct proc *p; |
9e97623a | 1326 | register struct chmod_args *uap; |
6a6a1e5f KM |
1327 | int *retval; |
1328 | { | |
fc2aed1e KM |
1329 | register struct vnode *vp; |
1330 | struct vattr vattr; | |
1331 | int error; | |
8429d022 | 1332 | struct nameidata nd; |
5485e062 | 1333 | |
7121fdf0 | 1334 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1335 | if (error = namei(&nd)) |
8429d022 | 1336 | return (error); |
dd4c01c2 | 1337 | vp = nd.ni_vp; |
dbcf7de6 KM |
1338 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1339 | VOP_LOCK(vp); | |
7121fdf0 | 1340 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1341 | error = EROFS; |
7121fdf0 KB |
1342 | else { |
1343 | VATTR_NULL(&vattr); | |
1344 | vattr.va_mode = uap->mode & ALLPERMS; | |
1345 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1346 | } |
fc2aed1e | 1347 | vput(vp); |
8429d022 | 1348 | return (error); |
528f664c | 1349 | } |
f94ceb3b | 1350 | |
4f083fd7 SL |
1351 | /* |
1352 | * Change mode of a file given a file descriptor. | |
1353 | */ | |
9e97623a CT |
1354 | struct fchmod_args { |
1355 | int fd; | |
7121fdf0 | 1356 | int mode; |
9e97623a | 1357 | }; |
6a6a1e5f KM |
1358 | /* ARGSUSED */ |
1359 | fchmod(p, uap, retval) | |
5e00df3b | 1360 | struct proc *p; |
9e97623a | 1361 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1362 | int *retval; |
1363 | { | |
fc2aed1e KM |
1364 | struct vattr vattr; |
1365 | struct vnode *vp; | |
1366 | struct file *fp; | |
1367 | int error; | |
1368 | ||
5e00df3b | 1369 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1370 | return (error); |
fc2aed1e | 1371 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1372 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1373 | VOP_LOCK(vp); |
7121fdf0 | 1374 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1375 | error = EROFS; |
7121fdf0 KB |
1376 | else { |
1377 | VATTR_NULL(&vattr); | |
1378 | vattr.va_mode = uap->mode & ALLPERMS; | |
1379 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
f94ceb3b | 1380 | } |
fc2aed1e | 1381 | VOP_UNLOCK(vp); |
8429d022 | 1382 | return (error); |
5485e062 BJ |
1383 | } |
1384 | ||
4f083fd7 SL |
1385 | /* |
1386 | * Set ownership given a path name. | |
1387 | */ | |
9e97623a | 1388 | struct chown_args { |
7121fdf0 | 1389 | char *path; |
9e97623a CT |
1390 | int uid; |
1391 | int gid; | |
1392 | }; | |
6a6a1e5f KM |
1393 | /* ARGSUSED */ |
1394 | chown(p, uap, retval) | |
5e00df3b | 1395 | struct proc *p; |
9e97623a | 1396 | register struct chown_args *uap; |
6a6a1e5f KM |
1397 | int *retval; |
1398 | { | |
fc2aed1e KM |
1399 | register struct vnode *vp; |
1400 | struct vattr vattr; | |
1401 | int error; | |
8429d022 | 1402 | struct nameidata nd; |
d67a03eb | 1403 | |
7121fdf0 | 1404 | NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1405 | if (error = namei(&nd)) |
8429d022 | 1406 | return (error); |
dd4c01c2 | 1407 | vp = nd.ni_vp; |
dbcf7de6 KM |
1408 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1409 | VOP_LOCK(vp); | |
7121fdf0 | 1410 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1411 | error = EROFS; |
7121fdf0 KB |
1412 | else { |
1413 | VATTR_NULL(&vattr); | |
1414 | vattr.va_uid = uap->uid; | |
1415 | vattr.va_gid = uap->gid; | |
1416 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1417 | } |
fc2aed1e | 1418 | vput(vp); |
8429d022 | 1419 | return (error); |
528f664c | 1420 | } |
f94ceb3b | 1421 | |
4f083fd7 SL |
1422 | /* |
1423 | * Set ownership given a file descriptor. | |
1424 | */ | |
9e97623a CT |
1425 | struct fchown_args { |
1426 | int fd; | |
1427 | int uid; | |
1428 | int gid; | |
1429 | }; | |
6a6a1e5f KM |
1430 | /* ARGSUSED */ |
1431 | fchown(p, uap, retval) | |
5e00df3b | 1432 | struct proc *p; |
9e97623a | 1433 | register struct fchown_args *uap; |
6a6a1e5f KM |
1434 | int *retval; |
1435 | { | |
fc2aed1e KM |
1436 | struct vattr vattr; |
1437 | struct vnode *vp; | |
1438 | struct file *fp; | |
1439 | int error; | |
1440 | ||
5e00df3b | 1441 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1442 | return (error); |
fc2aed1e | 1443 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1444 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1445 | VOP_LOCK(vp); |
7121fdf0 | 1446 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1447 | error = EROFS; |
7121fdf0 KB |
1448 | else { |
1449 | VATTR_NULL(&vattr); | |
1450 | vattr.va_uid = uap->uid; | |
1451 | vattr.va_gid = uap->gid; | |
1452 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1453 | } |
fc2aed1e | 1454 | VOP_UNLOCK(vp); |
8429d022 | 1455 | return (error); |
d67a03eb BJ |
1456 | } |
1457 | ||
6a6a1e5f KM |
1458 | /* |
1459 | * Set the access and modification times of a file. | |
1460 | */ | |
9e97623a | 1461 | struct utimes_args { |
7121fdf0 | 1462 | char *path; |
9e97623a CT |
1463 | struct timeval *tptr; |
1464 | }; | |
6a6a1e5f KM |
1465 | /* ARGSUSED */ |
1466 | utimes(p, uap, retval) | |
5e00df3b | 1467 | struct proc *p; |
9e97623a | 1468 | register struct utimes_args *uap; |
6a6a1e5f KM |
1469 | int *retval; |
1470 | { | |
fc2aed1e | 1471 | register struct vnode *vp; |
bb1b75f4 | 1472 | struct timeval tv[2]; |
fc2aed1e | 1473 | struct vattr vattr; |
8e88b0cd | 1474 | int error; |
8429d022 | 1475 | struct nameidata nd; |
bb1b75f4 | 1476 | |
f8ee9a49 KB |
1477 | VATTR_NULL(&vattr); |
1478 | if (uap->tptr == NULL) { | |
1479 | microtime(&tv[0]); | |
1480 | tv[1] = tv[0]; | |
fcba749b | 1481 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1482 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1483 | return (error); | |
7121fdf0 | 1484 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1485 | if (error = namei(&nd)) |
8429d022 | 1486 | return (error); |
dd4c01c2 | 1487 | vp = nd.ni_vp; |
dbcf7de6 KM |
1488 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1489 | VOP_LOCK(vp); | |
7121fdf0 | 1490 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1491 | error = EROFS; |
7121fdf0 KB |
1492 | else { |
1493 | vattr.va_atime.ts_sec = tv[0].tv_sec; | |
1494 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1495 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1496 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
1497 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
bb1b75f4 | 1498 | } |
fc2aed1e | 1499 | vput(vp); |
8429d022 | 1500 | return (error); |
d67a03eb | 1501 | } |
64d3a787 | 1502 | |
7121fdf0 KB |
1503 | /* |
1504 | * Truncate a file given its path name. | |
1505 | */ | |
95c0eb1e | 1506 | struct truncate_args { |
7121fdf0 | 1507 | char *path; |
2f2b3b3d CT |
1508 | int pad; |
1509 | off_t length; | |
1510 | }; | |
be320a2b | 1511 | /* ARGSUSED */ |
201e5411 | 1512 | truncate(p, uap, retval) |
5e00df3b | 1513 | struct proc *p; |
95c0eb1e | 1514 | register struct truncate_args *uap; |
6a6a1e5f KM |
1515 | int *retval; |
1516 | { | |
fc2aed1e KM |
1517 | register struct vnode *vp; |
1518 | struct vattr vattr; | |
1519 | int error; | |
8429d022 | 1520 | struct nameidata nd; |
528f664c | 1521 | |
7121fdf0 | 1522 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1523 | if (error = namei(&nd)) |
8429d022 | 1524 | return (error); |
dd4c01c2 | 1525 | vp = nd.ni_vp; |
dbcf7de6 KM |
1526 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1527 | VOP_LOCK(vp); | |
7121fdf0 | 1528 | if (vp->v_type == VDIR) |
fc2aed1e | 1529 | error = EISDIR; |
7121fdf0 KB |
1530 | else if ((error = vn_writechk(vp)) == 0 && |
1531 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p)) == 0) { | |
1532 | VATTR_NULL(&vattr); | |
1533 | vattr.va_size = uap->length; | |
1534 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
528f664c | 1535 | } |
fc2aed1e | 1536 | vput(vp); |
8429d022 | 1537 | return (error); |
528f664c SL |
1538 | } |
1539 | ||
7121fdf0 KB |
1540 | /* |
1541 | * Truncate a file given a file descriptor. | |
1542 | */ | |
95c0eb1e | 1543 | struct ftruncate_args { |
2f2b3b3d CT |
1544 | int fd; |
1545 | int pad; | |
1546 | off_t length; | |
1547 | }; | |
6a6a1e5f | 1548 | /* ARGSUSED */ |
201e5411 | 1549 | ftruncate(p, uap, retval) |
5e00df3b | 1550 | struct proc *p; |
95c0eb1e | 1551 | register struct ftruncate_args *uap; |
6a6a1e5f KM |
1552 | int *retval; |
1553 | { | |
fc2aed1e KM |
1554 | struct vattr vattr; |
1555 | struct vnode *vp; | |
528f664c | 1556 | struct file *fp; |
fc2aed1e KM |
1557 | int error; |
1558 | ||
5e00df3b | 1559 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1560 | return (error); |
fc2aed1e | 1561 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1562 | return (EINVAL); |
fc2aed1e | 1563 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1564 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1565 | VOP_LOCK(vp); |
7121fdf0 | 1566 | if (vp->v_type == VDIR) |
fc2aed1e | 1567 | error = EISDIR; |
7121fdf0 KB |
1568 | else if ((error = vn_writechk(vp)) == 0) { |
1569 | VATTR_NULL(&vattr); | |
1570 | vattr.va_size = uap->length; | |
1571 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); | |
528f664c | 1572 | } |
fc2aed1e | 1573 | VOP_UNLOCK(vp); |
8429d022 | 1574 | return (error); |
4f083fd7 SL |
1575 | } |
1576 | ||
2f2b3b3d CT |
1577 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1578 | /* | |
1579 | * Truncate a file given its path name. | |
1580 | */ | |
95c0eb1e | 1581 | struct otruncate_args { |
7121fdf0 | 1582 | char *path; |
9e97623a CT |
1583 | long length; |
1584 | }; | |
2f2b3b3d | 1585 | /* ARGSUSED */ |
51a9a1cf | 1586 | otruncate(p, uap, retval) |
2f2b3b3d | 1587 | struct proc *p; |
95c0eb1e | 1588 | register struct otruncate_args *uap; |
2f2b3b3d CT |
1589 | int *retval; |
1590 | { | |
95c0eb1e | 1591 | struct truncate_args nuap; |
2f2b3b3d | 1592 | |
7121fdf0 | 1593 | nuap.path = uap->path; |
2f2b3b3d | 1594 | nuap.length = uap->length; |
95c0eb1e | 1595 | return (truncate(p, &nuap, retval)); |
2f2b3b3d CT |
1596 | } |
1597 | ||
1598 | /* | |
1599 | * Truncate a file given a file descriptor. | |
1600 | */ | |
95c0eb1e | 1601 | struct oftruncate_args { |
9e97623a CT |
1602 | int fd; |
1603 | long length; | |
1604 | }; | |
2f2b3b3d | 1605 | /* ARGSUSED */ |
51a9a1cf | 1606 | oftruncate(p, uap, retval) |
2f2b3b3d | 1607 | struct proc *p; |
95c0eb1e | 1608 | register struct oftruncate_args *uap; |
2f2b3b3d CT |
1609 | int *retval; |
1610 | { | |
95c0eb1e | 1611 | struct ftruncate_args nuap; |
2f2b3b3d CT |
1612 | |
1613 | nuap.fd = uap->fd; | |
1614 | nuap.length = uap->length; | |
95c0eb1e | 1615 | return (ftruncate(p, &nuap, retval)); |
2f2b3b3d CT |
1616 | } |
1617 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1618 | ||
4f083fd7 | 1619 | /* |
7121fdf0 | 1620 | * Sync an open file. |
4f083fd7 | 1621 | */ |
9e97623a CT |
1622 | struct fsync_args { |
1623 | int fd; | |
1624 | }; | |
6a6a1e5f KM |
1625 | /* ARGSUSED */ |
1626 | fsync(p, uap, retval) | |
5e00df3b | 1627 | struct proc *p; |
9e97623a | 1628 | struct fsync_args *uap; |
6a6a1e5f KM |
1629 | int *retval; |
1630 | { | |
e79467ea | 1631 | register struct vnode *vp; |
4f083fd7 | 1632 | struct file *fp; |
fc2aed1e | 1633 | int error; |
4f083fd7 | 1634 | |
5e00df3b | 1635 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1636 | return (error); |
e79467ea KM |
1637 | vp = (struct vnode *)fp->f_data; |
1638 | VOP_LOCK(vp); | |
09d2ef1a | 1639 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1640 | VOP_UNLOCK(vp); |
8429d022 | 1641 | return (error); |
528f664c SL |
1642 | } |
1643 | ||
4f083fd7 | 1644 | /* |
7121fdf0 KB |
1645 | * Rename files. Source and destination must either both be directories, |
1646 | * or both not be directories. If target is a directory, it must be empty. | |
4f083fd7 | 1647 | */ |
9e97623a CT |
1648 | struct rename_args { |
1649 | char *from; | |
1650 | char *to; | |
1651 | }; | |
6a6a1e5f KM |
1652 | /* ARGSUSED */ |
1653 | rename(p, uap, retval) | |
5e00df3b | 1654 | struct proc *p; |
9e97623a | 1655 | register struct rename_args *uap; |
6a6a1e5f KM |
1656 | int *retval; |
1657 | { | |
fc2aed1e | 1658 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1659 | struct nameidata fromnd, tond; |
fc2aed1e | 1660 | int error; |
4f083fd7 | 1661 | |
a5368812 | 1662 | CHECKPOINTREF; |
dd4c01c2 KM |
1663 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1664 | uap->from, p); | |
1665 | if (error = namei(&fromnd)) | |
8429d022 | 1666 | return (error); |
5718fad3 | 1667 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1668 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1669 | UIO_USERSPACE, uap->to, p); | |
1670 | if (error = namei(&tond)) { | |
cfef4373 | 1671 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1672 | vrele(fromnd.ni_dvp); |
66955caf KM |
1673 | vrele(fvp); |
1674 | goto out1; | |
1675 | } | |
fc2aed1e KM |
1676 | tdvp = tond.ni_dvp; |
1677 | tvp = tond.ni_vp; | |
1678 | if (tvp != NULL) { | |
1679 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1680 | error = ENOTDIR; |
fc2aed1e KM |
1681 | goto out; |
1682 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1683 | error = EISDIR; |
fc2aed1e | 1684 | goto out; |
a5390dce | 1685 | } |
64d3a787 | 1686 | } |
fe562f32 | 1687 | if (fvp == tdvp) |
fc2aed1e | 1688 | error = EINVAL; |
fe562f32 | 1689 | /* |
5718fad3 KM |
1690 | * If source is the same as the destination (that is the |
1691 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1692 | * then there is nothing to do. |
1693 | */ | |
5718fad3 | 1694 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1695 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1696 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1697 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1698 | error = -1; |
fc2aed1e | 1699 | out: |
66955caf | 1700 | if (!error) { |
e62d4143 KM |
1701 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1702 | if (fromnd.ni_dvp != tdvp) | |
1703 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1704 | if (tvp) | |
1705 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1706 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1707 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1708 | } else { |
cfef4373 | 1709 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1710 | if (tdvp == tvp) |
1711 | vrele(tdvp); | |
1712 | else | |
1713 | vput(tdvp); | |
66955caf KM |
1714 | if (tvp) |
1715 | vput(tvp); | |
cfef4373 | 1716 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1717 | vrele(fromnd.ni_dvp); |
66955caf | 1718 | vrele(fvp); |
64d3a787 | 1719 | } |
c03959f9 | 1720 | p->p_spare[1]--; |
5718fad3 | 1721 | vrele(tond.ni_startdir); |
dd4c01c2 | 1722 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1723 | out1: |
c03959f9 | 1724 | p->p_spare[1]--; |
5718fad3 | 1725 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1726 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1727 | CHECKREFS("rename"); |
fe562f32 | 1728 | if (error == -1) |
8429d022 MK |
1729 | return (0); |
1730 | return (error); | |
64d3a787 | 1731 | } |
88a7a62a | 1732 | |
88a7a62a | 1733 | /* |
7121fdf0 | 1734 | * Make a directory file. |
88a7a62a | 1735 | */ |
9e97623a | 1736 | struct mkdir_args { |
7121fdf0 KB |
1737 | char *path; |
1738 | int mode; | |
9e97623a | 1739 | }; |
6a6a1e5f KM |
1740 | /* ARGSUSED */ |
1741 | mkdir(p, uap, retval) | |
5e00df3b | 1742 | struct proc *p; |
9e97623a | 1743 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1744 | int *retval; |
1745 | { | |
fc2aed1e KM |
1746 | register struct vnode *vp; |
1747 | struct vattr vattr; | |
1748 | int error; | |
8429d022 | 1749 | struct nameidata nd; |
88a7a62a | 1750 | |
a5368812 | 1751 | CHECKPOINTREF; |
7121fdf0 | 1752 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1753 | if (error = namei(&nd)) |
8429d022 | 1754 | return (error); |
dd4c01c2 | 1755 | vp = nd.ni_vp; |
fc2aed1e | 1756 | if (vp != NULL) { |
dd4c01c2 KM |
1757 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1758 | if (nd.ni_dvp == vp) | |
1759 | vrele(nd.ni_dvp); | |
6c44e83b | 1760 | else |
dd4c01c2 | 1761 | vput(nd.ni_dvp); |
66955caf | 1762 | vrele(vp); |
a5368812 | 1763 | CHECKREFS("mkdir1"); |
8429d022 | 1764 | return (EEXIST); |
88a7a62a | 1765 | } |
3ee1461b | 1766 | VATTR_NULL(&vattr); |
fc2aed1e | 1767 | vattr.va_type = VDIR; |
7121fdf0 | 1768 | vattr.va_mode = (uap->mode & ACCESSPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1769 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1770 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1771 | if (!error) |
dd4c01c2 | 1772 | vput(nd.ni_vp); |
a5368812 | 1773 | CHECKREFS("mkdir2"); |
8429d022 | 1774 | return (error); |
88a7a62a SL |
1775 | } |
1776 | ||
1777 | /* | |
7121fdf0 | 1778 | * Remove a directory file. |
88a7a62a | 1779 | */ |
9e97623a | 1780 | struct rmdir_args { |
7121fdf0 | 1781 | char *path; |
9e97623a | 1782 | }; |
6a6a1e5f KM |
1783 | /* ARGSUSED */ |
1784 | rmdir(p, uap, retval) | |
5e00df3b | 1785 | struct proc *p; |
9e97623a | 1786 | struct rmdir_args *uap; |
6a6a1e5f KM |
1787 | int *retval; |
1788 | { | |
fc2aed1e KM |
1789 | register struct vnode *vp; |
1790 | int error; | |
8429d022 | 1791 | struct nameidata nd; |
88a7a62a | 1792 | |
a5368812 | 1793 | CHECKPOINTREF; |
7121fdf0 | 1794 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1795 | if (error = namei(&nd)) |
8429d022 | 1796 | return (error); |
dd4c01c2 | 1797 | vp = nd.ni_vp; |
fc2aed1e KM |
1798 | if (vp->v_type != VDIR) { |
1799 | error = ENOTDIR; | |
88a7a62a SL |
1800 | goto out; |
1801 | } | |
1802 | /* | |
fc2aed1e | 1803 | * No rmdir "." please. |
88a7a62a | 1804 | */ |
dd4c01c2 | 1805 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1806 | error = EINVAL; |
88a7a62a SL |
1807 | goto out; |
1808 | } | |
1809 | /* | |
d4ed1dcd | 1810 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1811 | */ |
fc2aed1e KM |
1812 | if (vp->v_flag & VROOT) |
1813 | error = EBUSY; | |
88a7a62a | 1814 | out: |
66955caf | 1815 | if (!error) { |
dd4c01c2 | 1816 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1817 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1818 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1819 | } else { |
dd4c01c2 KM |
1820 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1821 | if (nd.ni_dvp == vp) | |
1822 | vrele(nd.ni_dvp); | |
6c44e83b | 1823 | else |
dd4c01c2 | 1824 | vput(nd.ni_dvp); |
66955caf KM |
1825 | vput(vp); |
1826 | } | |
a5368812 | 1827 | CHECKREFS("rmdir"); |
8429d022 | 1828 | return (error); |
88a7a62a SL |
1829 | } |
1830 | ||
3d92fa10 KM |
1831 | #ifdef COMPAT_43 |
1832 | /* | |
1833 | * Read a block of directory entries in a file system independent format. | |
1834 | */ | |
9e97623a CT |
1835 | struct ogetdirentries_args { |
1836 | int fd; | |
1837 | char *buf; | |
7121fdf0 | 1838 | u_int count; |
9e97623a CT |
1839 | long *basep; |
1840 | }; | |
3d92fa10 KM |
1841 | ogetdirentries(p, uap, retval) |
1842 | struct proc *p; | |
9e97623a | 1843 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1844 | int *retval; |
1845 | { | |
3d92fa10 KM |
1846 | register struct vnode *vp; |
1847 | struct file *fp; | |
1848 | struct uio auio, kuio; | |
1849 | struct iovec aiov, kiov; | |
1850 | struct dirent *dp, *edp; | |
1851 | caddr_t dirbuf; | |
1852 | int error, readcnt; | |
d80c3f56 | 1853 | long loff; |
3d92fa10 KM |
1854 | |
1855 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1856 | return (error); | |
1857 | if ((fp->f_flag & FREAD) == 0) | |
1858 | return (EBADF); | |
1859 | vp = (struct vnode *)fp->f_data; | |
1860 | if (vp->v_type != VDIR) | |
1861 | return (EINVAL); | |
1862 | aiov.iov_base = uap->buf; | |
1863 | aiov.iov_len = uap->count; | |
1864 | auio.uio_iov = &aiov; | |
1865 | auio.uio_iovcnt = 1; | |
1866 | auio.uio_rw = UIO_READ; | |
1867 | auio.uio_segflg = UIO_USERSPACE; | |
1868 | auio.uio_procp = p; | |
1869 | auio.uio_resid = uap->count; | |
1870 | VOP_LOCK(vp); | |
d80c3f56 | 1871 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1872 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1873 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1874 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1875 | fp->f_offset = auio.uio_offset; |
1876 | } else | |
3d92fa10 KM |
1877 | # endif |
1878 | { | |
1879 | kuio = auio; | |
1880 | kuio.uio_iov = &kiov; | |
1881 | kuio.uio_segflg = UIO_SYSSPACE; | |
1882 | kiov.iov_len = uap->count; | |
1883 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1884 | kiov.iov_base = dirbuf; | |
1885 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1886 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1887 | if (error == 0) { |
1888 | readcnt = uap->count - kuio.uio_resid; | |
1889 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1890 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1891 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1892 | /* |
30445fe6 KM |
1893 | * The expected low byte of |
1894 | * dp->d_namlen is our dp->d_type. | |
1895 | * The high MBZ byte of dp->d_namlen | |
1896 | * is our dp->d_namlen. | |
d80c3f56 | 1897 | */ |
30445fe6 KM |
1898 | dp->d_type = dp->d_namlen; |
1899 | dp->d_namlen = 0; | |
1900 | # else | |
1901 | /* | |
1902 | * The dp->d_type is the high byte | |
1903 | * of the expected dp->d_namlen, | |
1904 | * so must be zero'ed. | |
1905 | */ | |
1906 | dp->d_type = 0; | |
3d92fa10 KM |
1907 | # endif |
1908 | if (dp->d_reclen > 0) { | |
1909 | dp = (struct dirent *) | |
1910 | ((char *)dp + dp->d_reclen); | |
1911 | } else { | |
1912 | error = EIO; | |
1913 | break; | |
1914 | } | |
1915 | } | |
1916 | if (dp >= edp) | |
1917 | error = uiomove(dirbuf, readcnt, &auio); | |
1918 | } | |
1919 | FREE(dirbuf, M_TEMP); | |
1920 | } | |
3d92fa10 KM |
1921 | VOP_UNLOCK(vp); |
1922 | if (error) | |
1923 | return (error); | |
d80c3f56 | 1924 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1925 | *retval = uap->count - auio.uio_resid; |
1926 | return (error); | |
1927 | } | |
1928 | #endif | |
1929 | ||
fc2aed1e | 1930 | /* |
d4ed1dcd | 1931 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1932 | */ |
9e97623a CT |
1933 | struct getdirentries_args { |
1934 | int fd; | |
1935 | char *buf; | |
7121fdf0 | 1936 | u_int count; |
9e97623a CT |
1937 | long *basep; |
1938 | }; | |
6a6a1e5f | 1939 | getdirentries(p, uap, retval) |
5e00df3b | 1940 | struct proc *p; |
9e97623a | 1941 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1942 | int *retval; |
1943 | { | |
e79467ea | 1944 | register struct vnode *vp; |
8462a185 | 1945 | struct file *fp; |
fc2aed1e KM |
1946 | struct uio auio; |
1947 | struct iovec aiov; | |
d80c3f56 | 1948 | long loff; |
09d2ef1a | 1949 | int error; |
fc2aed1e | 1950 | |
5e00df3b | 1951 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1952 | return (error); |
fc2aed1e | 1953 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1954 | return (EBADF); |
e79467ea | 1955 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1956 | unionread: |
e79467ea | 1957 | if (vp->v_type != VDIR) |
8429d022 | 1958 | return (EINVAL); |
fc2aed1e KM |
1959 | aiov.iov_base = uap->buf; |
1960 | aiov.iov_len = uap->count; | |
1961 | auio.uio_iov = &aiov; | |
1962 | auio.uio_iovcnt = 1; | |
1963 | auio.uio_rw = UIO_READ; | |
1964 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1965 | auio.uio_procp = p; |
fc2aed1e | 1966 | auio.uio_resid = uap->count; |
e79467ea | 1967 | VOP_LOCK(vp); |
d80c3f56 | 1968 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1969 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1970 | fp->f_offset = auio.uio_offset; |
1971 | VOP_UNLOCK(vp); | |
1972 | if (error) | |
8429d022 | 1973 | return (error); |
95a9cadb JSP |
1974 | if ((uap->count == auio.uio_resid) && |
1975 | (vp->v_flag & VROOT) && | |
1976 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1977 | struct vnode *tvp = vp; | |
1978 | vp = vp->v_mount->mnt_vnodecovered; | |
1979 | VREF(vp); | |
1980 | fp->f_data = (caddr_t) vp; | |
1981 | fp->f_offset = 0; | |
1982 | vrele(tvp); | |
1983 | goto unionread; | |
1984 | } | |
d80c3f56 | 1985 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1986 | *retval = uap->count - auio.uio_resid; |
8429d022 | 1987 | return (error); |
88a7a62a SL |
1988 | } |
1989 | ||
1990 | /* | |
d4ed1dcd | 1991 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 1992 | */ |
9e97623a | 1993 | struct umask_args { |
7121fdf0 | 1994 | int newmask; |
9e97623a CT |
1995 | }; |
1996 | mode_t /* XXX */ | |
6a6a1e5f | 1997 | umask(p, uap, retval) |
5e00df3b | 1998 | struct proc *p; |
9e97623a | 1999 | struct umask_args *uap; |
6a6a1e5f KM |
2000 | int *retval; |
2001 | { | |
7121fdf0 | 2002 | register struct filedesc *fdp; |
88a7a62a | 2003 | |
7121fdf0 | 2004 | fdp = p->p_fd; |
5e00df3b | 2005 | *retval = fdp->fd_cmask; |
7121fdf0 | 2006 | fdp->fd_cmask = uap->newmask & ALLPERMS; |
8429d022 | 2007 | return (0); |
fc2aed1e KM |
2008 | } |
2009 | ||
b0a98f13 MT |
2010 | /* |
2011 | * Void all references to file by ripping underlying filesystem | |
2012 | * away from vnode. | |
2013 | */ | |
9e97623a | 2014 | struct revoke_args { |
7121fdf0 | 2015 | char *path; |
9e97623a | 2016 | }; |
6a6a1e5f KM |
2017 | /* ARGSUSED */ |
2018 | revoke(p, uap, retval) | |
5e00df3b | 2019 | struct proc *p; |
9e97623a | 2020 | register struct revoke_args *uap; |
6a6a1e5f KM |
2021 | int *retval; |
2022 | { | |
b0a98f13 MT |
2023 | register struct vnode *vp; |
2024 | struct vattr vattr; | |
2025 | int error; | |
8429d022 | 2026 | struct nameidata nd; |
b0a98f13 | 2027 | |
7121fdf0 | 2028 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 2029 | if (error = namei(&nd)) |
8429d022 | 2030 | return (error); |
dd4c01c2 | 2031 | vp = nd.ni_vp; |
b0a98f13 MT |
2032 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2033 | error = EINVAL; | |
2034 | goto out; | |
2035 | } | |
2c69fe14 | 2036 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2037 | goto out; |
8429d022 MK |
2038 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2039 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2040 | goto out; |
8b81d198 | 2041 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2042 | vgoneall(vp); |
b0a98f13 MT |
2043 | out: |
2044 | vrele(vp); | |
8429d022 | 2045 | return (error); |
b0a98f13 MT |
2046 | } |
2047 | ||
d4ed1dcd KM |
2048 | /* |
2049 | * Convert a user file descriptor to a kernel file entry. | |
2050 | */ | |
7121fdf0 | 2051 | getvnode(fdp, fd, fpp) |
5e00df3b | 2052 | struct filedesc *fdp; |
fc2aed1e | 2053 | struct file **fpp; |
7121fdf0 | 2054 | int fd; |
fc2aed1e KM |
2055 | { |
2056 | struct file *fp; | |
2057 | ||
7121fdf0 KB |
2058 | if ((u_int)fd >= fdp->fd_nfiles || |
2059 | (fp = fdp->fd_ofiles[fd]) == NULL) | |
fc2aed1e KM |
2060 | return (EBADF); |
2061 | if (fp->f_type != DTYPE_VNODE) | |
2062 | return (EINVAL); | |
2063 | *fpp = fp; | |
2064 | return (0); | |
88a7a62a | 2065 | } |