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. | |
adb35f79 KB |
4 | * (c) UNIX System Laboratories, Inc. |
5 | * All or some portions of this file are derived from material licensed | |
6 | * to the University of California by American Telephone and Telegraph | |
7 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
8 | * the permission of UNIX System Laboratories, Inc. | |
da7c5cc6 | 9 | * |
dbf0c423 | 10 | * %sccs.include.redist.c% |
fc2aed1e | 11 | * |
0f12de9d | 12 | * @(#)vfs_syscalls.c 8.27 (Berkeley) %G% |
da7c5cc6 | 13 | */ |
6459ebe0 | 14 | |
38a01dbe KB |
15 | #include <sys/param.h> |
16 | #include <sys/systm.h> | |
17 | #include <sys/namei.h> | |
18 | #include <sys/filedesc.h> | |
19 | #include <sys/kernel.h> | |
20 | #include <sys/file.h> | |
21 | #include <sys/stat.h> | |
22 | #include <sys/vnode.h> | |
23 | #include <sys/mount.h> | |
24 | #include <sys/proc.h> | |
25 | #include <sys/uio.h> | |
26 | #include <sys/malloc.h> | |
27 | #include <sys/dirent.h> | |
28 | ||
be320a2b | 29 | #include <vm/vm.h> |
6aecdd4c | 30 | #include <sys/sysctl.h> |
88a7a62a | 31 | |
7121fdf0 KB |
32 | static int change_dir __P((struct nameidata *ndp, struct proc *p)); |
33 | ||
a5368812 KM |
34 | #ifdef REF_DIAGNOSTIC |
35 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
36 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
37 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
38 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
39 | #else | |
40 | #define CHECKPOINTREF | |
41 | #define CHECKREFS(D) | |
42 | #endif | |
43 | ||
fc2aed1e KM |
44 | /* |
45 | * Virtual File System System Calls | |
46 | */ | |
3e78e260 | 47 | |
4f083fd7 | 48 | /* |
7121fdf0 | 49 | * Mount a file system. |
4f083fd7 | 50 | */ |
9e97623a CT |
51 | struct mount_args { |
52 | int type; | |
7121fdf0 | 53 | char *path; |
9e97623a CT |
54 | int flags; |
55 | caddr_t data; | |
56 | }; | |
6a6a1e5f KM |
57 | /* ARGSUSED */ |
58 | mount(p, uap, retval) | |
5e00df3b | 59 | struct proc *p; |
9e97623a | 60 | register struct mount_args *uap; |
6a6a1e5f KM |
61 | int *retval; |
62 | { | |
d48157d5 KM |
63 | register struct vnode *vp; |
64 | register struct mount *mp; | |
47971887 | 65 | int error, flag; |
c5208eda | 66 | struct vattr va; |
8429d022 | 67 | struct nameidata nd; |
3e78e260 | 68 | |
fc2aed1e KM |
69 | /* |
70 | * Get vnode to be covered | |
71 | */ | |
7121fdf0 | 72 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 73 | if (error = namei(&nd)) |
8429d022 | 74 | return (error); |
dd4c01c2 | 75 | vp = nd.ni_vp; |
54fb9dc2 | 76 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
77 | if ((vp->v_flag & VROOT) == 0) { |
78 | vput(vp); | |
8429d022 | 79 | return (EINVAL); |
d48157d5 KM |
80 | } |
81 | mp = vp->v_mount; | |
db62a40f | 82 | flag = mp->mnt_flag; |
d48157d5 | 83 | /* |
db62a40f KM |
84 | * We only allow the filesystem to be reloaded if it |
85 | * is currently mounted read-only. | |
d48157d5 | 86 | */ |
db62a40f KM |
87 | if ((uap->flags & MNT_RELOAD) && |
88 | ((mp->mnt_flag & MNT_RDONLY) == 0)) { | |
d48157d5 | 89 | vput(vp); |
8429d022 | 90 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 91 | } |
db62a40f KM |
92 | mp->mnt_flag |= |
93 | uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); | |
c5208eda KM |
94 | /* |
95 | * Only root, or the user that did the original mount is | |
96 | * permitted to update it. | |
97 | */ | |
98 | if (mp->mnt_stat.f_owner != p->p_ucred->cr_uid && | |
99 | (error = suser(p->p_ucred, &p->p_acflag))) { | |
100 | vput(vp); | |
101 | return (error); | |
102 | } | |
103 | /* | |
104 | * Do not allow NFS export by non-root users. Silently | |
105 | * enforce MNT_NOSUID and MNT_NODEV for non-root users. | |
106 | */ | |
107 | if (p->p_ucred->cr_uid != 0) { | |
108 | if (uap->flags & MNT_EXPORTED) { | |
109 | vput(vp); | |
110 | return (EPERM); | |
111 | } | |
112 | uap->flags |= MNT_NOSUID | MNT_NODEV; | |
113 | } | |
d48157d5 KM |
114 | VOP_UNLOCK(vp); |
115 | goto update; | |
116 | } | |
c5208eda KM |
117 | /* |
118 | * If the user is not root, ensure that they own the directory | |
119 | * onto which we are attempting to mount. | |
120 | */ | |
121 | if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) || | |
122 | (va.va_uid != p->p_ucred->cr_uid && | |
123 | (error = suser(p->p_ucred, &p->p_acflag)))) { | |
124 | vput(vp); | |
125 | return (error); | |
126 | } | |
127 | /* | |
128 | * Do not allow NFS export by non-root users. Silently | |
129 | * enforce MNT_NOSUID and MNT_NODEV for non-root users. | |
130 | */ | |
131 | if (p->p_ucred->cr_uid != 0) { | |
132 | if (uap->flags & MNT_EXPORTED) { | |
133 | vput(vp); | |
134 | return (EPERM); | |
135 | } | |
136 | uap->flags |= MNT_NOSUID | MNT_NODEV; | |
137 | } | |
c05286bd | 138 | if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) |
09d2ef1a | 139 | return (error); |
fc2aed1e KM |
140 | if (vp->v_type != VDIR) { |
141 | vput(vp); | |
8429d022 | 142 | return (ENOTDIR); |
fc2aed1e | 143 | } |
7121fdf0 | 144 | if ((u_long)uap->type > MOUNT_MAXTYPE || vfssw[uap->type] == NULL) { |
fc2aed1e | 145 | vput(vp); |
8429d022 | 146 | return (ENODEV); |
fc2aed1e | 147 | } |
bfb44088 | 148 | if (vp->v_mountedhere != NULL) { |
7a191a21 KM |
149 | vput(vp); |
150 | return (EBUSY); | |
151 | } | |
fc2aed1e KM |
152 | |
153 | /* | |
d48157d5 | 154 | * Allocate and initialize the file system. |
fc2aed1e KM |
155 | */ |
156 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
157 | M_MOUNT, M_WAITOK); | |
b1341251 | 158 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 159 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
160 | if (error = vfs_lock(mp)) { |
161 | free((caddr_t)mp, M_MOUNT); | |
162 | vput(vp); | |
8429d022 | 163 | return (error); |
d48157d5 | 164 | } |
d48157d5 | 165 | vp->v_mountedhere = mp; |
54fb9dc2 | 166 | mp->mnt_vnodecovered = vp; |
c5208eda | 167 | mp->mnt_stat.f_owner = p->p_ucred->cr_uid; |
d48157d5 KM |
168 | update: |
169 | /* | |
170 | * Set the mount level flags. | |
171 | */ | |
54fb9dc2 KM |
172 | if (uap->flags & MNT_RDONLY) |
173 | mp->mnt_flag |= MNT_RDONLY; | |
db62a40f KM |
174 | else if (mp->mnt_flag & MNT_RDONLY) |
175 | mp->mnt_flag |= MNT_WANTRDWR; | |
ac85da8a KM |
176 | mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | |
177 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
178 | mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | | |
179 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
d48157d5 KM |
180 | /* |
181 | * Mount the filesystem. | |
182 | */ | |
7121fdf0 | 183 | error = VFS_MOUNT(mp, uap->path, uap->data, &nd, p); |
54fb9dc2 | 184 | if (mp->mnt_flag & MNT_UPDATE) { |
d48157d5 | 185 | vrele(vp); |
db62a40f KM |
186 | if (mp->mnt_flag & MNT_WANTRDWR) |
187 | mp->mnt_flag &= ~MNT_RDONLY; | |
188 | mp->mnt_flag &=~ | |
189 | (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); | |
47971887 | 190 | if (error) |
54fb9dc2 | 191 | mp->mnt_flag = flag; |
8429d022 | 192 | return (error); |
d48157d5 | 193 | } |
92d0de98 KM |
194 | /* |
195 | * Put the new filesystem on the mount list after root. | |
196 | */ | |
fc2aed1e | 197 | cache_purge(vp); |
fc2aed1e | 198 | if (!error) { |
0f66cdec | 199 | TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); |
0f12de9d | 200 | checkdirs(vp); |
d48157d5 | 201 | VOP_UNLOCK(vp); |
fc2aed1e | 202 | vfs_unlock(mp); |
2c69fe14 | 203 | error = VFS_START(mp, 0, p); |
fc2aed1e | 204 | } else { |
0f66cdec KM |
205 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; |
206 | vfs_unlock(mp); | |
fc2aed1e | 207 | free((caddr_t)mp, M_MOUNT); |
d48157d5 | 208 | vput(vp); |
fc2aed1e | 209 | } |
8429d022 | 210 | return (error); |
3e78e260 BJ |
211 | } |
212 | ||
0f12de9d KM |
213 | /* |
214 | * Scan all active processes to see if any of them have a current | |
215 | * or root directory onto which the new filesystem has just been | |
216 | * mounted. If so, replace them with the new mount point. | |
217 | */ | |
218 | checkdirs(olddp) | |
219 | struct vnode *olddp; | |
220 | { | |
221 | struct filedesc *fdp; | |
222 | struct vnode *newdp; | |
223 | struct proc *p; | |
224 | ||
225 | if (olddp->v_usecount == 1) | |
226 | return; | |
227 | if (VFS_ROOT(olddp->v_mountedhere, &newdp)) | |
228 | panic("mount: lost mount"); | |
229 | for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) { | |
230 | fdp = p->p_fd; | |
231 | if (fdp->fd_cdir == olddp) { | |
232 | vrele(fdp->fd_cdir); | |
233 | VREF(newdp); | |
234 | fdp->fd_cdir = newdp; | |
235 | printf("patch cdir for proc %d\n", p->p_pid); | |
236 | } | |
237 | if (fdp->fd_rdir == olddp) { | |
238 | vrele(fdp->fd_rdir); | |
239 | VREF(newdp); | |
240 | fdp->fd_rdir = newdp; | |
241 | } | |
242 | } | |
243 | if (rootvnode == olddp) { | |
244 | vrele(rootvnode); | |
245 | VREF(newdp); | |
246 | rootvnode = newdp; | |
247 | } | |
248 | vput(newdp); | |
249 | } | |
250 | ||
4f083fd7 | 251 | /* |
7121fdf0 | 252 | * Unmount a file system. |
fc2aed1e KM |
253 | * |
254 | * Note: unmount takes a path to the vnode mounted on as argument, | |
255 | * not special file (as before). | |
4f083fd7 | 256 | */ |
9e97623a | 257 | struct unmount_args { |
7121fdf0 | 258 | char *path; |
9e97623a CT |
259 | int flags; |
260 | }; | |
6a6a1e5f KM |
261 | /* ARGSUSED */ |
262 | unmount(p, uap, retval) | |
5e00df3b | 263 | struct proc *p; |
9e97623a | 264 | register struct unmount_args *uap; |
6a6a1e5f KM |
265 | int *retval; |
266 | { | |
fc2aed1e | 267 | register struct vnode *vp; |
9151110e | 268 | struct mount *mp; |
fc2aed1e | 269 | int error; |
8429d022 | 270 | struct nameidata nd; |
fc2aed1e | 271 | |
7121fdf0 | 272 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 273 | if (error = namei(&nd)) |
8429d022 | 274 | return (error); |
dd4c01c2 | 275 | vp = nd.ni_vp; |
c5208eda | 276 | mp = vp->v_mount; |
f0e827e3 JSP |
277 | |
278 | /* | |
c5208eda KM |
279 | * Only root, or the user that did the original mount is |
280 | * permitted to unmount this filesystem. | |
f0e827e3 | 281 | */ |
c5208eda | 282 | if ((mp->mnt_stat.f_owner != p->p_ucred->cr_uid) && |
f0e827e3 JSP |
283 | (error = suser(p->p_ucred, &p->p_acflag))) { |
284 | vput(vp); | |
285 | return (error); | |
286 | } | |
287 | ||
fc2aed1e KM |
288 | /* |
289 | * Must be the root of the filesystem | |
290 | */ | |
291 | if ((vp->v_flag & VROOT) == 0) { | |
292 | vput(vp); | |
8429d022 | 293 | return (EINVAL); |
fc2aed1e | 294 | } |
fc2aed1e | 295 | vput(vp); |
2c69fe14 | 296 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
297 | } |
298 | ||
299 | /* | |
7121fdf0 | 300 | * Do the actual file system unmount. |
9151110e | 301 | */ |
2c69fe14 | 302 | dounmount(mp, flags, p) |
9151110e KM |
303 | register struct mount *mp; |
304 | int flags; | |
2c69fe14 | 305 | struct proc *p; |
9151110e KM |
306 | { |
307 | struct vnode *coveredvp; | |
308 | int error; | |
309 | ||
54fb9dc2 | 310 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
311 | if (vfs_busy(mp)) |
312 | return (EBUSY); | |
54fb9dc2 | 313 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 314 | if (error = vfs_lock(mp)) |
9151110e | 315 | return (error); |
fc2aed1e | 316 | |
1c295f6f | 317 | mp->mnt_flag &=~ MNT_ASYNC; |
9db58063 | 318 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 319 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
320 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
321 | (flags & MNT_FORCE)) | |
2c69fe14 | 322 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 323 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 324 | vfs_unbusy(mp); |
fc2aed1e KM |
325 | if (error) { |
326 | vfs_unlock(mp); | |
327 | } else { | |
328 | vrele(coveredvp); | |
0f66cdec KM |
329 | TAILQ_REMOVE(&mountlist, mp, mnt_list); |
330 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; | |
331 | vfs_unlock(mp); | |
332 | if (mp->mnt_vnodelist.lh_first != NULL) | |
ea2761aa | 333 | panic("unmount: dangling vnode"); |
fc2aed1e KM |
334 | free((caddr_t)mp, M_MOUNT); |
335 | } | |
9151110e | 336 | return (error); |
fc2aed1e KM |
337 | } |
338 | ||
339 | /* | |
fc2aed1e KM |
340 | * Sync each mounted filesystem. |
341 | */ | |
b5e5c792 | 342 | #ifdef DEBUG |
0649728d | 343 | int syncprt = 0; |
6aecdd4c | 344 | struct ctldebug debug0 = { "syncprt", &syncprt }; |
0649728d KM |
345 | #endif |
346 | ||
9e97623a CT |
347 | struct sync_args { |
348 | int dummy; | |
349 | }; | |
ff4fb102 | 350 | /* ARGSUSED */ |
6a6a1e5f | 351 | sync(p, uap, retval) |
5e00df3b | 352 | struct proc *p; |
9e97623a | 353 | struct sync_args *uap; |
6a6a1e5f | 354 | int *retval; |
3e78e260 | 355 | { |
0f66cdec | 356 | register struct mount *mp, *nmp; |
1c295f6f | 357 | int asyncflag; |
fc2aed1e | 358 | |
0f66cdec | 359 | for (mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
1a7bccf6 KM |
360 | /* |
361 | * Get the next pointer in case we hang on vfs_busy | |
362 | * while we are being unmounted. | |
363 | */ | |
0f66cdec | 364 | nmp = mp->mnt_list.tqe_next; |
62e35d50 KM |
365 | /* |
366 | * The lock check below is to avoid races with mount | |
367 | * and unmount. | |
368 | */ | |
54fb9dc2 | 369 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 370 | !vfs_busy(mp)) { |
1c295f6f KM |
371 | asyncflag = mp->mnt_flag & MNT_ASYNC; |
372 | mp->mnt_flag &= ~MNT_ASYNC; | |
09d2ef1a | 373 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
1c295f6f KM |
374 | if (asyncflag) |
375 | mp->mnt_flag |= MNT_ASYNC; | |
1a7bccf6 KM |
376 | /* |
377 | * Get the next pointer again, as the next filesystem | |
378 | * might have been unmounted while we were sync'ing. | |
379 | */ | |
380 | nmp = mp->mnt_list.tqe_next; | |
0f66cdec KM |
381 | vfs_unbusy(mp); |
382 | } | |
383 | } | |
0649728d KM |
384 | #ifdef DIAGNOSTIC |
385 | if (syncprt) | |
386 | vfs_bufstats(); | |
387 | #endif /* DIAGNOSTIC */ | |
78eeb014 | 388 | return (0); |
fc2aed1e KM |
389 | } |
390 | ||
c001b1c3 | 391 | /* |
7121fdf0 | 392 | * Change filesystem quotas. |
c001b1c3 | 393 | */ |
9e97623a CT |
394 | struct quotactl_args { |
395 | char *path; | |
396 | int cmd; | |
397 | int uid; | |
398 | caddr_t arg; | |
399 | }; | |
6a6a1e5f KM |
400 | /* ARGSUSED */ |
401 | quotactl(p, uap, retval) | |
5e00df3b | 402 | struct proc *p; |
9e97623a | 403 | register struct quotactl_args *uap; |
6a6a1e5f KM |
404 | int *retval; |
405 | { | |
c001b1c3 | 406 | register struct mount *mp; |
c001b1c3 | 407 | int error; |
8429d022 | 408 | struct nameidata nd; |
c001b1c3 | 409 | |
dd4c01c2 KM |
410 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
411 | if (error = namei(&nd)) | |
8429d022 | 412 | return (error); |
dd4c01c2 KM |
413 | mp = nd.ni_vp->v_mount; |
414 | vrele(nd.ni_vp); | |
2c69fe14 | 415 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
416 | } |
417 | ||
fc2aed1e | 418 | /* |
d4ed1dcd | 419 | * Get filesystem statistics. |
fc2aed1e | 420 | */ |
9e97623a CT |
421 | struct statfs_args { |
422 | char *path; | |
423 | struct statfs *buf; | |
424 | }; | |
6a6a1e5f KM |
425 | /* ARGSUSED */ |
426 | statfs(p, uap, retval) | |
5e00df3b | 427 | struct proc *p; |
9e97623a | 428 | register struct statfs_args *uap; |
6a6a1e5f KM |
429 | int *retval; |
430 | { | |
3f705640 | 431 | register struct mount *mp; |
62e35d50 | 432 | register struct statfs *sp; |
fc2aed1e | 433 | int error; |
8429d022 | 434 | struct nameidata nd; |
3e78e260 | 435 | |
dd4c01c2 KM |
436 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
437 | if (error = namei(&nd)) | |
8429d022 | 438 | return (error); |
dd4c01c2 | 439 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 440 | sp = &mp->mnt_stat; |
dd4c01c2 | 441 | vrele(nd.ni_vp); |
2c69fe14 | 442 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 443 | return (error); |
54fb9dc2 | 444 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 445 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
446 | } |
447 | ||
6a6a1e5f | 448 | /* |
d4ed1dcd | 449 | * Get filesystem statistics. |
6a6a1e5f | 450 | */ |
9e97623a CT |
451 | struct fstatfs_args { |
452 | int fd; | |
453 | struct statfs *buf; | |
454 | }; | |
6a6a1e5f KM |
455 | /* ARGSUSED */ |
456 | fstatfs(p, uap, retval) | |
5e00df3b | 457 | struct proc *p; |
9e97623a | 458 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
459 | int *retval; |
460 | { | |
fc2aed1e | 461 | struct file *fp; |
3f705640 | 462 | struct mount *mp; |
62e35d50 | 463 | register struct statfs *sp; |
fc2aed1e KM |
464 | int error; |
465 | ||
5e00df3b | 466 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 467 | return (error); |
3f705640 | 468 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 469 | sp = &mp->mnt_stat; |
2c69fe14 | 470 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 471 | return (error); |
54fb9dc2 | 472 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 473 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
474 | } |
475 | ||
bfcdbfbf | 476 | /* |
d4ed1dcd | 477 | * Get statistics on all filesystems. |
bfcdbfbf | 478 | */ |
9e97623a CT |
479 | struct getfsstat_args { |
480 | struct statfs *buf; | |
481 | long bufsize; | |
482 | int flags; | |
483 | }; | |
6a6a1e5f | 484 | getfsstat(p, uap, retval) |
5e00df3b | 485 | struct proc *p; |
9e97623a | 486 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
487 | int *retval; |
488 | { | |
0f66cdec | 489 | register struct mount *mp, *nmp; |
62e35d50 | 490 | register struct statfs *sp; |
f62fad9a | 491 | caddr_t sfsp; |
bfcdbfbf KM |
492 | long count, maxcount, error; |
493 | ||
494 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 495 | sfsp = (caddr_t)uap->buf; |
0f66cdec KM |
496 | for (count = 0, mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
497 | nmp = mp->mnt_list.tqe_next; | |
54fb9dc2 KM |
498 | if (sfsp && count < maxcount && |
499 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
500 | sp = &mp->mnt_stat; | |
62e35d50 KM |
501 | /* |
502 | * If MNT_NOWAIT is specified, do not refresh the | |
503 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
504 | */ | |
505 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
506 | (uap->flags & MNT_WAIT)) && | |
0f66cdec | 507 | (error = VFS_STATFS(mp, sp, p))) |
fd8516be | 508 | continue; |
54fb9dc2 | 509 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 510 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 511 | return (error); |
62e35d50 | 512 | sfsp += sizeof(*sp); |
bfcdbfbf | 513 | } |
f62fad9a | 514 | count++; |
0f66cdec | 515 | } |
bfcdbfbf | 516 | if (sfsp && count > maxcount) |
6a6a1e5f | 517 | *retval = maxcount; |
bfcdbfbf | 518 | else |
6a6a1e5f | 519 | *retval = count; |
8429d022 | 520 | return (0); |
bfcdbfbf KM |
521 | } |
522 | ||
6995a2cb KM |
523 | /* |
524 | * Change current working directory to a given file descriptor. | |
525 | */ | |
9e97623a CT |
526 | struct fchdir_args { |
527 | int fd; | |
528 | }; | |
6a6a1e5f KM |
529 | /* ARGSUSED */ |
530 | fchdir(p, uap, retval) | |
5e00df3b | 531 | struct proc *p; |
9e97623a | 532 | struct fchdir_args *uap; |
6a6a1e5f KM |
533 | int *retval; |
534 | { | |
5e00df3b | 535 | register struct filedesc *fdp = p->p_fd; |
0f12de9d KM |
536 | struct vnode *vp, *tdp; |
537 | struct mount *mp; | |
6995a2cb KM |
538 | struct file *fp; |
539 | int error; | |
540 | ||
5e00df3b | 541 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 542 | return (error); |
6995a2cb | 543 | vp = (struct vnode *)fp->f_data; |
0f12de9d | 544 | VREF(vp); |
6995a2cb KM |
545 | VOP_LOCK(vp); |
546 | if (vp->v_type != VDIR) | |
547 | error = ENOTDIR; | |
548 | else | |
2c69fe14 | 549 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
0f12de9d KM |
550 | while (!error && (mp = vp->v_mountedhere) != NULL) { |
551 | if (mp->mnt_flag & MNT_MLOCK) { | |
552 | mp->mnt_flag |= MNT_MWAIT; | |
553 | sleep((caddr_t)mp, PVFS); | |
554 | continue; | |
555 | } | |
556 | if (error = VFS_ROOT(mp, &tdp)) | |
557 | break; | |
558 | vput(vp); | |
559 | vp = tdp; | |
560 | } | |
6995a2cb | 561 | VOP_UNLOCK(vp); |
0f12de9d KM |
562 | if (error) { |
563 | vrele(vp); | |
8429d022 | 564 | return (error); |
0f12de9d | 565 | } |
5e00df3b KM |
566 | vrele(fdp->fd_cdir); |
567 | fdp->fd_cdir = vp; | |
8429d022 | 568 | return (0); |
6995a2cb KM |
569 | } |
570 | ||
4f083fd7 | 571 | /* |
fc2aed1e | 572 | * Change current working directory (``.''). |
4f083fd7 | 573 | */ |
9e97623a | 574 | struct chdir_args { |
7121fdf0 | 575 | char *path; |
9e97623a | 576 | }; |
6a6a1e5f KM |
577 | /* ARGSUSED */ |
578 | chdir(p, uap, retval) | |
5e00df3b | 579 | struct proc *p; |
9e97623a | 580 | struct chdir_args *uap; |
6a6a1e5f KM |
581 | int *retval; |
582 | { | |
5e00df3b | 583 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 584 | int error; |
8429d022 | 585 | struct nameidata nd; |
3e78e260 | 586 | |
7121fdf0 KB |
587 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
588 | if (error = change_dir(&nd, p)) | |
8429d022 | 589 | return (error); |
5e00df3b | 590 | vrele(fdp->fd_cdir); |
dd4c01c2 | 591 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 592 | return (0); |
fc2aed1e KM |
593 | } |
594 | ||
595 | /* | |
596 | * Change notion of root (``/'') directory. | |
597 | */ | |
9e97623a | 598 | struct chroot_args { |
7121fdf0 | 599 | char *path; |
9e97623a | 600 | }; |
6a6a1e5f KM |
601 | /* ARGSUSED */ |
602 | chroot(p, uap, retval) | |
5e00df3b | 603 | struct proc *p; |
9e97623a | 604 | struct chroot_args *uap; |
6a6a1e5f KM |
605 | int *retval; |
606 | { | |
5e00df3b | 607 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 608 | int error; |
8429d022 | 609 | struct nameidata nd; |
fc2aed1e | 610 | |
8429d022 MK |
611 | if (error = suser(p->p_ucred, &p->p_acflag)) |
612 | return (error); | |
7121fdf0 KB |
613 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
614 | if (error = change_dir(&nd, p)) | |
8429d022 | 615 | return (error); |
5e00df3b KM |
616 | if (fdp->fd_rdir != NULL) |
617 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 618 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 619 | return (0); |
fc2aed1e KM |
620 | } |
621 | ||
622 | /* | |
623 | * Common routine for chroot and chdir. | |
624 | */ | |
7121fdf0 KB |
625 | static int |
626 | change_dir(ndp, p) | |
dd4c01c2 | 627 | register struct nameidata *ndp; |
8429d022 | 628 | struct proc *p; |
fc2aed1e KM |
629 | { |
630 | struct vnode *vp; | |
631 | int error; | |
632 | ||
dd4c01c2 | 633 | if (error = namei(ndp)) |
fc2aed1e KM |
634 | return (error); |
635 | vp = ndp->ni_vp; | |
636 | if (vp->v_type != VDIR) | |
637 | error = ENOTDIR; | |
638 | else | |
2c69fe14 | 639 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
640 | VOP_UNLOCK(vp); |
641 | if (error) | |
642 | vrele(vp); | |
643 | return (error); | |
3e78e260 BJ |
644 | } |
645 | ||
646 | /* | |
6a6a1e5f KM |
647 | * Check permissions, allocate an open file structure, |
648 | * and call the device open routine if any. | |
3e78e260 | 649 | */ |
9e97623a | 650 | struct open_args { |
7121fdf0 KB |
651 | char *path; |
652 | int flags; | |
9e97623a | 653 | int mode; |
9e97623a | 654 | }; |
6a6a1e5f | 655 | open(p, uap, retval) |
5e00df3b | 656 | struct proc *p; |
9e97623a | 657 | register struct open_args *uap; |
6a6a1e5f | 658 | int *retval; |
3e78e260 | 659 | { |
5e00df3b | 660 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 661 | register struct file *fp; |
6aaf085a | 662 | register struct vnode *vp; |
7121fdf0 | 663 | int flags, cmode; |
fc2aed1e | 664 | struct file *nfp; |
ff8d1617 KM |
665 | int type, indx, error; |
666 | struct flock lf; | |
8429d022 | 667 | struct nameidata nd; |
fc2aed1e KM |
668 | extern struct fileops vnops; |
669 | ||
5e00df3b | 670 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 671 | return (error); |
fc2aed1e | 672 | fp = nfp; |
7121fdf0 KB |
673 | flags = FFLAGS(uap->flags); |
674 | cmode = ((uap->mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; | |
675 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); | |
03951846 | 676 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
7121fdf0 | 677 | if (error = vn_open(&nd, flags, cmode)) { |
336f999d | 678 | ffree(fp); |
f0e12026 KM |
679 | if ((error == ENODEV || error == ENXIO) && |
680 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
7121fdf0 KB |
681 | (error = |
682 | dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) { | |
6a6a1e5f | 683 | *retval = indx; |
8429d022 | 684 | return (0); |
6a6a1e5f | 685 | } |
b10521d6 KM |
686 | if (error == ERESTART) |
687 | error = EINTR; | |
78eeb014 | 688 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 689 | return (error); |
528f664c | 690 | } |
da5acac3 | 691 | p->p_dupfd = 0; |
dd4c01c2 | 692 | vp = nd.ni_vp; |
7121fdf0 | 693 | fp->f_flag = flags & FMASK; |
8932276d KM |
694 | fp->f_type = DTYPE_VNODE; |
695 | fp->f_ops = &vnops; | |
696 | fp->f_data = (caddr_t)vp; | |
7121fdf0 | 697 | if (flags & (O_EXLOCK | O_SHLOCK)) { |
ff8d1617 KM |
698 | lf.l_whence = SEEK_SET; |
699 | lf.l_start = 0; | |
700 | lf.l_len = 0; | |
7121fdf0 | 701 | if (flags & O_EXLOCK) |
ff8d1617 KM |
702 | lf.l_type = F_WRLCK; |
703 | else | |
704 | lf.l_type = F_RDLCK; | |
705 | type = F_FLOCK; | |
7121fdf0 | 706 | if ((flags & FNONBLOCK) == 0) |
ff8d1617 | 707 | type |= F_WAIT; |
70b7fe1d | 708 | VOP_UNLOCK(vp); |
6aaf085a | 709 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
6aaf085a | 710 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); |
336f999d | 711 | ffree(fp); |
ff8d1617 KM |
712 | fdp->fd_ofiles[indx] = NULL; |
713 | return (error); | |
714 | } | |
70b7fe1d | 715 | VOP_LOCK(vp); |
b40ecf6f | 716 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 717 | } |
6aaf085a | 718 | VOP_UNLOCK(vp); |
6a6a1e5f | 719 | *retval = indx; |
8429d022 | 720 | return (0); |
3e78e260 BJ |
721 | } |
722 | ||
4fde03dc | 723 | #ifdef COMPAT_43 |
3e78e260 | 724 | /* |
7121fdf0 | 725 | * Create a file. |
3e78e260 | 726 | */ |
9e97623a | 727 | struct ocreat_args { |
7121fdf0 KB |
728 | char *path; |
729 | int mode; | |
9e97623a | 730 | }; |
4fde03dc | 731 | ocreat(p, uap, retval) |
6a6a1e5f | 732 | struct proc *p; |
9e97623a | 733 | register struct ocreat_args *uap; |
6a6a1e5f | 734 | int *retval; |
3e78e260 | 735 | { |
9e97623a | 736 | struct open_args openuap; |
6a6a1e5f | 737 | |
7121fdf0 KB |
738 | openuap.path = uap->path; |
739 | openuap.mode = uap->mode; | |
740 | openuap.flags = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 741 | return (open(p, &openuap, retval)); |
6a6a1e5f | 742 | } |
4fde03dc | 743 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
744 | |
745 | /* | |
7121fdf0 | 746 | * Create a special file. |
6a6a1e5f | 747 | */ |
9e97623a | 748 | struct mknod_args { |
7121fdf0 KB |
749 | char *path; |
750 | int mode; | |
9e97623a CT |
751 | int dev; |
752 | }; | |
6a6a1e5f KM |
753 | /* ARGSUSED */ |
754 | mknod(p, uap, retval) | |
5e00df3b | 755 | struct proc *p; |
9e97623a | 756 | register struct mknod_args *uap; |
6a6a1e5f KM |
757 | int *retval; |
758 | { | |
fc2aed1e KM |
759 | register struct vnode *vp; |
760 | struct vattr vattr; | |
761 | int error; | |
88edbcd4 | 762 | int whiteout; |
8429d022 | 763 | struct nameidata nd; |
3e78e260 | 764 | |
a5368812 | 765 | CHECKPOINTREF; |
8429d022 MK |
766 | if (error = suser(p->p_ucred, &p->p_acflag)) |
767 | return (error); | |
7121fdf0 | 768 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 769 | if (error = namei(&nd)) |
8429d022 | 770 | return (error); |
dd4c01c2 | 771 | vp = nd.ni_vp; |
cf5ef508 | 772 | if (vp != NULL) |
fc2aed1e | 773 | error = EEXIST; |
cf5ef508 KB |
774 | else { |
775 | VATTR_NULL(&vattr); | |
776 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; | |
777 | vattr.va_rdev = uap->dev; | |
88edbcd4 | 778 | whiteout = 0; |
cf5ef508 KB |
779 | |
780 | switch (uap->mode & S_IFMT) { | |
781 | case S_IFMT: /* used by badsect to flag bad sectors */ | |
782 | vattr.va_type = VBAD; | |
783 | break; | |
784 | case S_IFCHR: | |
785 | vattr.va_type = VCHR; | |
786 | break; | |
787 | case S_IFBLK: | |
788 | vattr.va_type = VBLK; | |
789 | break; | |
88edbcd4 JSP |
790 | case S_IFWHT: |
791 | whiteout = 1; | |
792 | break; | |
cf5ef508 KB |
793 | default: |
794 | error = EINVAL; | |
795 | break; | |
796 | } | |
3e78e260 | 797 | } |
0a33da3f | 798 | if (!error) { |
4c5d3e43 | 799 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
0a33da3f JSP |
800 | if (whiteout) { |
801 | error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE); | |
802 | if (error) | |
803 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
804 | vput(nd.ni_dvp); | |
805 | } else { | |
806 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, | |
807 | &nd.ni_cnd, &vattr); | |
808 | } | |
66955caf | 809 | } else { |
dd4c01c2 KM |
810 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
811 | if (nd.ni_dvp == vp) | |
812 | vrele(nd.ni_dvp); | |
6c44e83b | 813 | else |
dd4c01c2 | 814 | vput(nd.ni_dvp); |
66955caf KM |
815 | if (vp) |
816 | vrele(vp); | |
817 | } | |
a5368812 | 818 | CHECKREFS("mknod"); |
8429d022 | 819 | return (error); |
3e78e260 BJ |
820 | } |
821 | ||
4751dd21 | 822 | /* |
7121fdf0 | 823 | * Create named pipe. |
4751dd21 | 824 | */ |
9e97623a | 825 | struct mkfifo_args { |
7121fdf0 KB |
826 | char *path; |
827 | int mode; | |
9e97623a | 828 | }; |
6a6a1e5f KM |
829 | /* ARGSUSED */ |
830 | mkfifo(p, uap, retval) | |
5e00df3b | 831 | struct proc *p; |
9e97623a | 832 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
833 | int *retval; |
834 | { | |
4751dd21 KM |
835 | struct vattr vattr; |
836 | int error; | |
8429d022 | 837 | struct nameidata nd; |
4751dd21 KM |
838 | |
839 | #ifndef FIFO | |
8429d022 | 840 | return (EOPNOTSUPP); |
4751dd21 | 841 | #else |
7121fdf0 | 842 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 843 | if (error = namei(&nd)) |
8429d022 | 844 | return (error); |
dd4c01c2 KM |
845 | if (nd.ni_vp != NULL) { |
846 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
847 | if (nd.ni_dvp == nd.ni_vp) | |
848 | vrele(nd.ni_dvp); | |
6c44e83b | 849 | else |
dd4c01c2 KM |
850 | vput(nd.ni_dvp); |
851 | vrele(nd.ni_vp); | |
8429d022 | 852 | return (EEXIST); |
4751dd21 | 853 | } |
3658f091 KB |
854 | VATTR_NULL(&vattr); |
855 | vattr.va_type = VFIFO; | |
7121fdf0 | 856 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; |
4c5d3e43 | 857 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 858 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); |
4751dd21 KM |
859 | #endif /* FIFO */ |
860 | } | |
861 | ||
3e78e260 | 862 | /* |
7121fdf0 | 863 | * Make a hard file link. |
3e78e260 | 864 | */ |
9e97623a | 865 | struct link_args { |
7121fdf0 KB |
866 | char *path; |
867 | char *link; | |
9e97623a | 868 | }; |
6a6a1e5f KM |
869 | /* ARGSUSED */ |
870 | link(p, uap, retval) | |
5e00df3b | 871 | struct proc *p; |
9e97623a | 872 | register struct link_args *uap; |
6a6a1e5f KM |
873 | int *retval; |
874 | { | |
7121fdf0 | 875 | register struct vnode *vp; |
8429d022 | 876 | struct nameidata nd; |
7121fdf0 | 877 | int error; |
3e78e260 | 878 | |
a5368812 | 879 | CHECKPOINTREF; |
7121fdf0 | 880 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 881 | if (error = namei(&nd)) |
8429d022 | 882 | return (error); |
dd4c01c2 | 883 | vp = nd.ni_vp; |
cf5ef508 KB |
884 | if (vp->v_type != VDIR || |
885 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
886 | nd.ni_cnd.cn_nameiop = CREATE; | |
887 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
888 | nd.ni_dirp = uap->link; | |
889 | if ((error = namei(&nd)) == 0) { | |
890 | if (nd.ni_vp != NULL) | |
891 | error = EEXIST; | |
892 | if (!error) { | |
4c5d3e43 KM |
893 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, |
894 | LEASE_WRITE); | |
895 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); | |
cf5ef508 KB |
896 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); |
897 | } else { | |
898 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
899 | if (nd.ni_dvp == nd.ni_vp) | |
900 | vrele(nd.ni_dvp); | |
901 | else | |
902 | vput(nd.ni_dvp); | |
903 | if (nd.ni_vp) | |
904 | vrele(nd.ni_vp); | |
905 | } | |
906 | } | |
66955caf | 907 | } |
cf5ef508 | 908 | vrele(vp); |
a5368812 | 909 | CHECKREFS("link"); |
8429d022 | 910 | return (error); |
3e78e260 BJ |
911 | } |
912 | ||
913 | /* | |
d4ed1dcd | 914 | * Make a symbolic link. |
3e78e260 | 915 | */ |
9e97623a | 916 | struct symlink_args { |
7121fdf0 KB |
917 | char *path; |
918 | char *link; | |
9e97623a | 919 | }; |
6a6a1e5f KM |
920 | /* ARGSUSED */ |
921 | symlink(p, uap, retval) | |
5e00df3b | 922 | struct proc *p; |
9e97623a | 923 | register struct symlink_args *uap; |
6a6a1e5f KM |
924 | int *retval; |
925 | { | |
fc2aed1e | 926 | struct vattr vattr; |
7121fdf0 | 927 | char *path; |
fc2aed1e | 928 | int error; |
8429d022 | 929 | struct nameidata nd; |
3e78e260 | 930 | |
a5368812 | 931 | CHECKPOINTREF; |
7121fdf0 KB |
932 | MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
933 | if (error = copyinstr(uap->path, path, MAXPATHLEN, NULL)) | |
66955caf | 934 | goto out; |
7121fdf0 | 935 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->link, p); |
dd4c01c2 | 936 | if (error = namei(&nd)) |
66955caf | 937 | goto out; |
dd4c01c2 KM |
938 | if (nd.ni_vp) { |
939 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
940 | if (nd.ni_dvp == nd.ni_vp) | |
941 | vrele(nd.ni_dvp); | |
6c44e83b | 942 | else |
dd4c01c2 KM |
943 | vput(nd.ni_dvp); |
944 | vrele(nd.ni_vp); | |
fc2aed1e KM |
945 | error = EEXIST; |
946 | goto out; | |
3e78e260 | 947 | } |
3ee1461b | 948 | VATTR_NULL(&vattr); |
7121fdf0 | 949 | vattr.va_mode = ACCESSPERMS &~ p->p_fd->fd_cmask; |
4c5d3e43 | 950 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
7121fdf0 | 951 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, path); |
fc2aed1e | 952 | out: |
7121fdf0 | 953 | FREE(path, M_NAMEI); |
a5368812 | 954 | CHECKREFS("symlink"); |
8429d022 | 955 | return (error); |
3e78e260 BJ |
956 | } |
957 | ||
0411e53b JSP |
958 | /* |
959 | * Delete a whiteout from the filesystem. | |
960 | */ | |
e90b20e5 | 961 | struct undelete_args { |
0411e53b JSP |
962 | char *path; |
963 | }; | |
964 | /* ARGSUSED */ | |
e90b20e5 | 965 | undelete(p, uap, retval) |
0411e53b | 966 | struct proc *p; |
e90b20e5 | 967 | struct undelete_args *uap; |
0411e53b JSP |
968 | int *retval; |
969 | { | |
970 | int error; | |
971 | struct nameidata nd; | |
972 | ||
88edbcd4 JSP |
973 | NDINIT(&nd, DELETE, LOCKPARENT|DOWHITEOUT, UIO_USERSPACE, uap->path, p); |
974 | error = namei(&nd); | |
975 | if (error) | |
0411e53b | 976 | return (error); |
88edbcd4 JSP |
977 | |
978 | if (nd.ni_vp != NULLVP || !(nd.ni_cnd.cn_flags & ISWHITEOUT)) { | |
0411e53b JSP |
979 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
980 | if (nd.ni_dvp == nd.ni_vp) | |
981 | vrele(nd.ni_dvp); | |
982 | else | |
983 | vput(nd.ni_dvp); | |
984 | if (nd.ni_vp) | |
985 | vrele(nd.ni_vp); | |
986 | return (EEXIST); | |
987 | } | |
88edbcd4 | 988 | |
4c5d3e43 | 989 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
0a33da3f | 990 | if (error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, DELETE)) |
88edbcd4 | 991 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
0411e53b JSP |
992 | vput(nd.ni_dvp); |
993 | return (error); | |
994 | } | |
995 | ||
3e78e260 | 996 | /* |
d4ed1dcd | 997 | * Delete a name from the filesystem. |
3e78e260 | 998 | */ |
9e97623a | 999 | struct unlink_args { |
7121fdf0 | 1000 | char *path; |
9e97623a | 1001 | }; |
6a6a1e5f KM |
1002 | /* ARGSUSED */ |
1003 | unlink(p, uap, retval) | |
5e00df3b | 1004 | struct proc *p; |
9e97623a | 1005 | struct unlink_args *uap; |
6a6a1e5f KM |
1006 | int *retval; |
1007 | { | |
fc2aed1e KM |
1008 | register struct vnode *vp; |
1009 | int error; | |
8429d022 | 1010 | struct nameidata nd; |
3e78e260 | 1011 | |
a5368812 | 1012 | CHECKPOINTREF; |
7121fdf0 | 1013 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1014 | if (error = namei(&nd)) |
8429d022 | 1015 | return (error); |
dd4c01c2 | 1016 | vp = nd.ni_vp; |
4c5d3e43 | 1017 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1018 | VOP_LOCK(vp); |
7121fdf0 | 1019 | |
cf5ef508 KB |
1020 | if (vp->v_type != VDIR || |
1021 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
1022 | /* | |
1023 | * The root of a mounted filesystem cannot be deleted. | |
1024 | */ | |
1025 | if (vp->v_flag & VROOT) | |
1026 | error = EBUSY; | |
1027 | else | |
1028 | (void)vnode_pager_uncache(vp); | |
1029 | } | |
1030 | ||
1031 | if (!error) { | |
4c5d3e43 | 1032 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1033 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1034 | } else { |
dd4c01c2 KM |
1035 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1036 | if (nd.ni_dvp == vp) | |
1037 | vrele(nd.ni_dvp); | |
6c44e83b | 1038 | else |
dd4c01c2 | 1039 | vput(nd.ni_dvp); |
88edbcd4 JSP |
1040 | if (vp != NULLVP) |
1041 | vput(vp); | |
66955caf | 1042 | } |
a5368812 | 1043 | CHECKREFS("unlink"); |
8429d022 | 1044 | return (error); |
3e78e260 BJ |
1045 | } |
1046 | ||
7121fdf0 KB |
1047 | /* |
1048 | * Reposition read/write file offset. | |
1049 | */ | |
95c0eb1e | 1050 | struct lseek_args { |
7121fdf0 | 1051 | int fd; |
2f2b3b3d | 1052 | int pad; |
7121fdf0 KB |
1053 | off_t offset; |
1054 | int whence; | |
2f2b3b3d | 1055 | }; |
201e5411 | 1056 | lseek(p, uap, retval) |
5e00df3b | 1057 | struct proc *p; |
95c0eb1e | 1058 | register struct lseek_args *uap; |
9e97623a | 1059 | int *retval; |
6a6a1e5f | 1060 | { |
8429d022 | 1061 | struct ucred *cred = p->p_ucred; |
5e00df3b | 1062 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 1063 | register struct file *fp; |
fc2aed1e KM |
1064 | struct vattr vattr; |
1065 | int error; | |
1066 | ||
7121fdf0 KB |
1067 | if ((u_int)uap->fd >= fdp->fd_nfiles || |
1068 | (fp = fdp->fd_ofiles[uap->fd]) == NULL) | |
8429d022 | 1069 | return (EBADF); |
fc2aed1e | 1070 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 1071 | return (ESPIPE); |
7121fdf0 | 1072 | switch (uap->whence) { |
b4d1aee9 | 1073 | case L_INCR: |
7121fdf0 | 1074 | fp->f_offset += uap->offset; |
b4d1aee9 | 1075 | break; |
b4d1aee9 | 1076 | case L_XTND: |
7121fdf0 KB |
1077 | if (error = |
1078 | VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p)) | |
8429d022 | 1079 | return (error); |
7121fdf0 | 1080 | fp->f_offset = uap->offset + vattr.va_size; |
b4d1aee9 | 1081 | break; |
b4d1aee9 | 1082 | case L_SET: |
7121fdf0 | 1083 | fp->f_offset = uap->offset; |
b4d1aee9 | 1084 | break; |
b4d1aee9 | 1085 | default: |
8429d022 | 1086 | return (EINVAL); |
b4d1aee9 | 1087 | } |
9e97623a | 1088 | *(off_t *)retval = fp->f_offset; |
8429d022 | 1089 | return (0); |
3e78e260 BJ |
1090 | } |
1091 | ||
201e5411 | 1092 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
64deb204 | 1093 | /* |
7121fdf0 | 1094 | * Reposition read/write file offset. |
64deb204 | 1095 | */ |
95c0eb1e | 1096 | struct olseek_args { |
7121fdf0 KB |
1097 | int fd; |
1098 | long offset; | |
1099 | int whence; | |
64deb204 | 1100 | }; |
201e5411 | 1101 | olseek(p, uap, retval) |
64deb204 | 1102 | struct proc *p; |
95c0eb1e | 1103 | register struct olseek_args *uap; |
64deb204 KM |
1104 | int *retval; |
1105 | { | |
95c0eb1e | 1106 | struct lseek_args nuap; |
64deb204 KM |
1107 | off_t qret; |
1108 | int error; | |
1109 | ||
7121fdf0 KB |
1110 | nuap.fd = uap->fd; |
1111 | nuap.offset = uap->offset; | |
1112 | nuap.whence = uap->whence; | |
95c0eb1e | 1113 | error = lseek(p, &nuap, &qret); |
64deb204 KM |
1114 | *(long *)retval = qret; |
1115 | return (error); | |
1116 | } | |
201e5411 | 1117 | #endif /* COMPAT_43 */ |
64deb204 | 1118 | |
3e78e260 | 1119 | /* |
d4ed1dcd | 1120 | * Check access permissions. |
3e78e260 | 1121 | */ |
b54e8954 | 1122 | struct access_args { |
7121fdf0 KB |
1123 | char *path; |
1124 | int flags; | |
9e97623a | 1125 | }; |
b54e8954 | 1126 | access(p, uap, retval) |
5e00df3b | 1127 | struct proc *p; |
b54e8954 | 1128 | register struct access_args *uap; |
6a6a1e5f KM |
1129 | int *retval; |
1130 | { | |
8429d022 | 1131 | register struct ucred *cred = p->p_ucred; |
fc2aed1e | 1132 | register struct vnode *vp; |
cf5ef508 | 1133 | int error, flags, t_gid, t_uid; |
8429d022 | 1134 | struct nameidata nd; |
3e78e260 | 1135 | |
cf5ef508 KB |
1136 | t_uid = cred->cr_uid; |
1137 | t_gid = cred->cr_groups[0]; | |
8429d022 MK |
1138 | cred->cr_uid = p->p_cred->p_ruid; |
1139 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
7121fdf0 | 1140 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1141 | if (error = namei(&nd)) |
fc2aed1e | 1142 | goto out1; |
dd4c01c2 | 1143 | vp = nd.ni_vp; |
7121fdf0 KB |
1144 | |
1145 | /* Flags == 0 means only check for existence. */ | |
1146 | if (uap->flags) { | |
1147 | flags = 0; | |
1148 | if (uap->flags & R_OK) | |
1149 | flags |= VREAD; | |
1150 | if (uap->flags & W_OK) | |
1151 | flags |= VWRITE; | |
1152 | if (uap->flags & X_OK) | |
1153 | flags |= VEXEC; | |
1154 | if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) | |
1155 | error = VOP_ACCESS(vp, flags, cred, p); | |
3e78e260 | 1156 | } |
fc2aed1e KM |
1157 | vput(vp); |
1158 | out1: | |
cf5ef508 KB |
1159 | cred->cr_uid = t_uid; |
1160 | cred->cr_groups[0] = t_gid; | |
8429d022 | 1161 | return (error); |
3e78e260 | 1162 | } |
d67a03eb | 1163 | |
8932276d | 1164 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1165 | /* |
7121fdf0 | 1166 | * Get file status; this version follows links. |
d67a03eb | 1167 | */ |
9e97623a | 1168 | struct ostat_args { |
7121fdf0 | 1169 | char *path; |
9e97623a CT |
1170 | struct ostat *ub; |
1171 | }; | |
6a6a1e5f | 1172 | /* ARGSUSED */ |
ae9b6dc3 | 1173 | ostat(p, uap, retval) |
be320a2b | 1174 | struct proc *p; |
9e97623a | 1175 | register struct ostat_args *uap; |
be320a2b KM |
1176 | int *retval; |
1177 | { | |
1178 | struct stat sb; | |
1179 | struct ostat osb; | |
1180 | int error; | |
1181 | struct nameidata nd; | |
1182 | ||
7121fdf0 | 1183 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1184 | if (error = namei(&nd)) |
1185 | return (error); | |
1186 | error = vn_stat(nd.ni_vp, &sb, p); | |
1187 | vput(nd.ni_vp); | |
1188 | if (error) | |
1189 | return (error); | |
1190 | cvtstat(&sb, &osb); | |
1191 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1192 | return (error); | |
1193 | } | |
1194 | ||
1195 | /* | |
7121fdf0 | 1196 | * Get file status; this version does not follow links. |
be320a2b | 1197 | */ |
9e97623a | 1198 | struct olstat_args { |
7121fdf0 | 1199 | char *path; |
9e97623a CT |
1200 | struct ostat *ub; |
1201 | }; | |
be320a2b | 1202 | /* ARGSUSED */ |
ae9b6dc3 | 1203 | olstat(p, uap, retval) |
be320a2b | 1204 | struct proc *p; |
9e97623a | 1205 | register struct olstat_args *uap; |
be320a2b KM |
1206 | int *retval; |
1207 | { | |
1d4d1402 KM |
1208 | struct vnode *vp, *dvp; |
1209 | struct stat sb, sb1; | |
be320a2b KM |
1210 | struct ostat osb; |
1211 | int error; | |
1212 | struct nameidata nd; | |
1213 | ||
1d4d1402 KM |
1214 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
1215 | uap->path, p); | |
be320a2b KM |
1216 | if (error = namei(&nd)) |
1217 | return (error); | |
1d4d1402 KM |
1218 | /* |
1219 | * For symbolic links, always return the attributes of its | |
1220 | * containing directory, except for mode, size, and links. | |
1221 | */ | |
1222 | vp = nd.ni_vp; | |
1223 | dvp = nd.ni_dvp; | |
1224 | if (vp->v_type != VLNK) { | |
1225 | if (dvp == vp) | |
1226 | vrele(dvp); | |
1227 | else | |
1228 | vput(dvp); | |
1229 | error = vn_stat(vp, &sb, p); | |
1230 | vput(vp); | |
1231 | if (error) | |
1232 | return (error); | |
1233 | } else { | |
1234 | error = vn_stat(dvp, &sb, p); | |
1235 | vput(dvp); | |
1236 | if (error) { | |
1237 | vput(vp); | |
1238 | return (error); | |
1239 | } | |
1240 | error = vn_stat(vp, &sb1, p); | |
1241 | vput(vp); | |
1242 | if (error) | |
1243 | return (error); | |
1244 | sb.st_mode &= ~S_IFDIR; | |
1245 | sb.st_mode |= S_IFLNK; | |
1246 | sb.st_nlink = sb1.st_nlink; | |
1247 | sb.st_size = sb1.st_size; | |
1248 | sb.st_blocks = sb1.st_blocks; | |
1249 | } | |
be320a2b KM |
1250 | cvtstat(&sb, &osb); |
1251 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1252 | return (error); | |
1253 | } | |
1254 | ||
1255 | /* | |
7121fdf0 | 1256 | * Convert from an old to a new stat structure. |
be320a2b KM |
1257 | */ |
1258 | cvtstat(st, ost) | |
1259 | struct stat *st; | |
1260 | struct ostat *ost; | |
1261 | { | |
1262 | ||
1263 | ost->st_dev = st->st_dev; | |
1264 | ost->st_ino = st->st_ino; | |
1265 | ost->st_mode = st->st_mode; | |
1266 | ost->st_nlink = st->st_nlink; | |
1267 | ost->st_uid = st->st_uid; | |
1268 | ost->st_gid = st->st_gid; | |
1269 | ost->st_rdev = st->st_rdev; | |
1270 | if (st->st_size < (quad_t)1 << 32) | |
1271 | ost->st_size = st->st_size; | |
1272 | else | |
1273 | ost->st_size = -2; | |
1274 | ost->st_atime = st->st_atime; | |
1275 | ost->st_mtime = st->st_mtime; | |
1276 | ost->st_ctime = st->st_ctime; | |
1277 | ost->st_blksize = st->st_blksize; | |
1278 | ost->st_blocks = st->st_blocks; | |
1279 | ost->st_flags = st->st_flags; | |
1280 | ost->st_gen = st->st_gen; | |
1281 | } | |
8932276d | 1282 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1283 | |
1284 | /* | |
7121fdf0 | 1285 | * Get file status; this version follows links. |
be320a2b | 1286 | */ |
9e97623a | 1287 | struct stat_args { |
7121fdf0 | 1288 | char *path; |
9e97623a CT |
1289 | struct stat *ub; |
1290 | }; | |
be320a2b | 1291 | /* ARGSUSED */ |
ae9b6dc3 | 1292 | stat(p, uap, retval) |
5e00df3b | 1293 | struct proc *p; |
9e97623a | 1294 | register struct stat_args *uap; |
6a6a1e5f | 1295 | int *retval; |
d67a03eb | 1296 | { |
6a6a1e5f KM |
1297 | struct stat sb; |
1298 | int error; | |
8429d022 | 1299 | struct nameidata nd; |
d67a03eb | 1300 | |
7121fdf0 | 1301 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1302 | if (error = namei(&nd)) |
8429d022 | 1303 | return (error); |
dd4c01c2 KM |
1304 | error = vn_stat(nd.ni_vp, &sb, p); |
1305 | vput(nd.ni_vp); | |
6a6a1e5f | 1306 | if (error) |
8429d022 | 1307 | return (error); |
6a6a1e5f | 1308 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1309 | return (error); |
d67a03eb BJ |
1310 | } |
1311 | ||
5485e062 | 1312 | /* |
7121fdf0 | 1313 | * Get file status; this version does not follow links. |
5485e062 | 1314 | */ |
9e97623a | 1315 | struct lstat_args { |
7121fdf0 | 1316 | char *path; |
9e97623a CT |
1317 | struct stat *ub; |
1318 | }; | |
6a6a1e5f | 1319 | /* ARGSUSED */ |
ae9b6dc3 | 1320 | lstat(p, uap, retval) |
5e00df3b | 1321 | struct proc *p; |
9e97623a | 1322 | register struct lstat_args *uap; |
6a6a1e5f KM |
1323 | int *retval; |
1324 | { | |
fc2aed1e | 1325 | int error; |
49f762b8 KM |
1326 | struct vnode *vp, *dvp; |
1327 | struct stat sb, sb1; | |
8429d022 | 1328 | struct nameidata nd; |
5485e062 | 1329 | |
49f762b8 | 1330 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
7121fdf0 | 1331 | uap->path, p); |
dd4c01c2 | 1332 | if (error = namei(&nd)) |
8429d022 | 1333 | return (error); |
49f762b8 KM |
1334 | /* |
1335 | * For symbolic links, always return the attributes of its | |
1336 | * containing directory, except for mode, size, and links. | |
1337 | */ | |
1338 | vp = nd.ni_vp; | |
1339 | dvp = nd.ni_dvp; | |
1340 | if (vp->v_type != VLNK) { | |
1341 | if (dvp == vp) | |
1342 | vrele(dvp); | |
1343 | else | |
1344 | vput(dvp); | |
1345 | error = vn_stat(vp, &sb, p); | |
1346 | vput(vp); | |
1347 | if (error) | |
1348 | return (error); | |
1349 | } else { | |
1350 | error = vn_stat(dvp, &sb, p); | |
1351 | vput(dvp); | |
1352 | if (error) { | |
1353 | vput(vp); | |
1354 | return (error); | |
1355 | } | |
1356 | error = vn_stat(vp, &sb1, p); | |
1357 | vput(vp); | |
1358 | if (error) | |
1359 | return (error); | |
1360 | sb.st_mode &= ~S_IFDIR; | |
1361 | sb.st_mode |= S_IFLNK; | |
1362 | sb.st_nlink = sb1.st_nlink; | |
1363 | sb.st_size = sb1.st_size; | |
1364 | sb.st_blocks = sb1.st_blocks; | |
1365 | } | |
fc2aed1e | 1366 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1367 | return (error); |
d67a03eb BJ |
1368 | } |
1369 | ||
201e5411 | 1370 | /* |
7121fdf0 | 1371 | * Get configurable pathname variables. |
201e5411 KM |
1372 | */ |
1373 | struct pathconf_args { | |
7121fdf0 | 1374 | char *path; |
201e5411 KM |
1375 | int name; |
1376 | }; | |
1377 | /* ARGSUSED */ | |
1378 | pathconf(p, uap, retval) | |
1379 | struct proc *p; | |
1380 | register struct pathconf_args *uap; | |
1381 | int *retval; | |
1382 | { | |
1383 | int error; | |
1384 | struct nameidata nd; | |
1385 | ||
7121fdf0 | 1386 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
201e5411 KM |
1387 | if (error = namei(&nd)) |
1388 | return (error); | |
1389 | error = VOP_PATHCONF(nd.ni_vp, uap->name, retval); | |
1390 | vput(nd.ni_vp); | |
1391 | return (error); | |
1392 | } | |
1393 | ||
d67a03eb | 1394 | /* |
d4ed1dcd | 1395 | * Return target name of a symbolic link. |
5485e062 | 1396 | */ |
9e97623a | 1397 | struct readlink_args { |
7121fdf0 | 1398 | char *path; |
9e97623a CT |
1399 | char *buf; |
1400 | int count; | |
1401 | }; | |
6a6a1e5f KM |
1402 | /* ARGSUSED */ |
1403 | readlink(p, uap, retval) | |
5e00df3b | 1404 | struct proc *p; |
9e97623a | 1405 | register struct readlink_args *uap; |
6a6a1e5f KM |
1406 | int *retval; |
1407 | { | |
fc2aed1e KM |
1408 | register struct vnode *vp; |
1409 | struct iovec aiov; | |
1410 | struct uio auio; | |
1411 | int error; | |
8429d022 | 1412 | struct nameidata nd; |
5485e062 | 1413 | |
a5368812 | 1414 | CHECKPOINTREF; |
7121fdf0 | 1415 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1416 | if (error = namei(&nd)) |
8429d022 | 1417 | return (error); |
dd4c01c2 | 1418 | vp = nd.ni_vp; |
7121fdf0 | 1419 | if (vp->v_type != VLNK) |
fc2aed1e | 1420 | error = EINVAL; |
7121fdf0 KB |
1421 | else { |
1422 | aiov.iov_base = uap->buf; | |
1423 | aiov.iov_len = uap->count; | |
1424 | auio.uio_iov = &aiov; | |
1425 | auio.uio_iovcnt = 1; | |
1426 | auio.uio_offset = 0; | |
1427 | auio.uio_rw = UIO_READ; | |
1428 | auio.uio_segflg = UIO_USERSPACE; | |
1429 | auio.uio_procp = p; | |
1430 | auio.uio_resid = uap->count; | |
1431 | error = VOP_READLINK(vp, &auio, p->p_ucred); | |
5485e062 | 1432 | } |
fc2aed1e | 1433 | vput(vp); |
6a6a1e5f | 1434 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1435 | CHECKREFS("readlink"); |
8429d022 | 1436 | return (error); |
5485e062 BJ |
1437 | } |
1438 | ||
6995a2cb | 1439 | /* |
7121fdf0 | 1440 | * Change flags of a file given a path name. |
6995a2cb | 1441 | */ |
9e97623a | 1442 | struct chflags_args { |
7121fdf0 | 1443 | char *path; |
9e97623a CT |
1444 | int flags; |
1445 | }; | |
6a6a1e5f KM |
1446 | /* ARGSUSED */ |
1447 | chflags(p, uap, retval) | |
5e00df3b | 1448 | struct proc *p; |
9e97623a | 1449 | register struct chflags_args *uap; |
6a6a1e5f KM |
1450 | int *retval; |
1451 | { | |
6995a2cb KM |
1452 | register struct vnode *vp; |
1453 | struct vattr vattr; | |
1454 | int error; | |
8429d022 | 1455 | struct nameidata nd; |
6995a2cb | 1456 | |
7121fdf0 | 1457 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1458 | if (error = namei(&nd)) |
8429d022 | 1459 | return (error); |
dd4c01c2 | 1460 | vp = nd.ni_vp; |
4c5d3e43 | 1461 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1462 | VOP_LOCK(vp); |
7121fdf0 | 1463 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1464 | error = EROFS; |
7121fdf0 KB |
1465 | else { |
1466 | VATTR_NULL(&vattr); | |
1467 | vattr.va_flags = uap->flags; | |
1468 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1469 | } |
6995a2cb | 1470 | vput(vp); |
8429d022 | 1471 | return (error); |
6995a2cb KM |
1472 | } |
1473 | ||
1474 | /* | |
1475 | * Change flags of a file given a file descriptor. | |
1476 | */ | |
9e97623a CT |
1477 | struct fchflags_args { |
1478 | int fd; | |
1479 | int flags; | |
1480 | }; | |
6a6a1e5f KM |
1481 | /* ARGSUSED */ |
1482 | fchflags(p, uap, retval) | |
5e00df3b | 1483 | struct proc *p; |
9e97623a | 1484 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1485 | int *retval; |
1486 | { | |
6995a2cb KM |
1487 | struct vattr vattr; |
1488 | struct vnode *vp; | |
1489 | struct file *fp; | |
1490 | int error; | |
1491 | ||
5e00df3b | 1492 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1493 | return (error); |
6995a2cb | 1494 | vp = (struct vnode *)fp->f_data; |
4c5d3e43 | 1495 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1496 | VOP_LOCK(vp); |
7121fdf0 | 1497 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1498 | error = EROFS; |
7121fdf0 KB |
1499 | else { |
1500 | VATTR_NULL(&vattr); | |
1501 | vattr.va_flags = uap->flags; | |
1502 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1503 | } |
6995a2cb | 1504 | VOP_UNLOCK(vp); |
8429d022 | 1505 | return (error); |
6995a2cb KM |
1506 | } |
1507 | ||
4f083fd7 SL |
1508 | /* |
1509 | * Change mode of a file given path name. | |
1510 | */ | |
9e97623a | 1511 | struct chmod_args { |
7121fdf0 KB |
1512 | char *path; |
1513 | int mode; | |
9e97623a | 1514 | }; |
6a6a1e5f KM |
1515 | /* ARGSUSED */ |
1516 | chmod(p, uap, retval) | |
5e00df3b | 1517 | struct proc *p; |
9e97623a | 1518 | register struct chmod_args *uap; |
6a6a1e5f KM |
1519 | int *retval; |
1520 | { | |
fc2aed1e KM |
1521 | register struct vnode *vp; |
1522 | struct vattr vattr; | |
1523 | int error; | |
8429d022 | 1524 | struct nameidata nd; |
5485e062 | 1525 | |
7121fdf0 | 1526 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1527 | if (error = namei(&nd)) |
8429d022 | 1528 | return (error); |
dd4c01c2 | 1529 | vp = nd.ni_vp; |
4c5d3e43 | 1530 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1531 | VOP_LOCK(vp); |
7121fdf0 | 1532 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1533 | error = EROFS; |
7121fdf0 KB |
1534 | else { |
1535 | VATTR_NULL(&vattr); | |
1536 | vattr.va_mode = uap->mode & ALLPERMS; | |
1537 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1538 | } |
fc2aed1e | 1539 | vput(vp); |
8429d022 | 1540 | return (error); |
528f664c | 1541 | } |
f94ceb3b | 1542 | |
4f083fd7 SL |
1543 | /* |
1544 | * Change mode of a file given a file descriptor. | |
1545 | */ | |
9e97623a CT |
1546 | struct fchmod_args { |
1547 | int fd; | |
7121fdf0 | 1548 | int mode; |
9e97623a | 1549 | }; |
6a6a1e5f KM |
1550 | /* ARGSUSED */ |
1551 | fchmod(p, uap, retval) | |
5e00df3b | 1552 | struct proc *p; |
9e97623a | 1553 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1554 | int *retval; |
1555 | { | |
fc2aed1e KM |
1556 | struct vattr vattr; |
1557 | struct vnode *vp; | |
1558 | struct file *fp; | |
1559 | int error; | |
1560 | ||
5e00df3b | 1561 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1562 | return (error); |
fc2aed1e | 1563 | vp = (struct vnode *)fp->f_data; |
4c5d3e43 | 1564 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1565 | VOP_LOCK(vp); |
7121fdf0 | 1566 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1567 | error = EROFS; |
7121fdf0 KB |
1568 | else { |
1569 | VATTR_NULL(&vattr); | |
1570 | vattr.va_mode = uap->mode & ALLPERMS; | |
1571 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
f94ceb3b | 1572 | } |
fc2aed1e | 1573 | VOP_UNLOCK(vp); |
8429d022 | 1574 | return (error); |
5485e062 BJ |
1575 | } |
1576 | ||
4f083fd7 SL |
1577 | /* |
1578 | * Set ownership given a path name. | |
1579 | */ | |
9e97623a | 1580 | struct chown_args { |
7121fdf0 | 1581 | char *path; |
9e97623a CT |
1582 | int uid; |
1583 | int gid; | |
1584 | }; | |
6a6a1e5f KM |
1585 | /* ARGSUSED */ |
1586 | chown(p, uap, retval) | |
5e00df3b | 1587 | struct proc *p; |
9e97623a | 1588 | register struct chown_args *uap; |
6a6a1e5f KM |
1589 | int *retval; |
1590 | { | |
fc2aed1e KM |
1591 | register struct vnode *vp; |
1592 | struct vattr vattr; | |
1593 | int error; | |
8429d022 | 1594 | struct nameidata nd; |
d67a03eb | 1595 | |
12561664 | 1596 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1597 | if (error = namei(&nd)) |
8429d022 | 1598 | return (error); |
dd4c01c2 | 1599 | vp = nd.ni_vp; |
4c5d3e43 | 1600 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1601 | VOP_LOCK(vp); |
7121fdf0 | 1602 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1603 | error = EROFS; |
7121fdf0 KB |
1604 | else { |
1605 | VATTR_NULL(&vattr); | |
1606 | vattr.va_uid = uap->uid; | |
1607 | vattr.va_gid = uap->gid; | |
1608 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1609 | } |
fc2aed1e | 1610 | vput(vp); |
8429d022 | 1611 | return (error); |
528f664c | 1612 | } |
f94ceb3b | 1613 | |
4f083fd7 SL |
1614 | /* |
1615 | * Set ownership given a file descriptor. | |
1616 | */ | |
9e97623a CT |
1617 | struct fchown_args { |
1618 | int fd; | |
1619 | int uid; | |
1620 | int gid; | |
1621 | }; | |
6a6a1e5f KM |
1622 | /* ARGSUSED */ |
1623 | fchown(p, uap, retval) | |
5e00df3b | 1624 | struct proc *p; |
9e97623a | 1625 | register struct fchown_args *uap; |
6a6a1e5f KM |
1626 | int *retval; |
1627 | { | |
fc2aed1e KM |
1628 | struct vattr vattr; |
1629 | struct vnode *vp; | |
1630 | struct file *fp; | |
1631 | int error; | |
1632 | ||
5e00df3b | 1633 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1634 | return (error); |
fc2aed1e | 1635 | vp = (struct vnode *)fp->f_data; |
4c5d3e43 | 1636 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1637 | VOP_LOCK(vp); |
7121fdf0 | 1638 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1639 | error = EROFS; |
7121fdf0 KB |
1640 | else { |
1641 | VATTR_NULL(&vattr); | |
1642 | vattr.va_uid = uap->uid; | |
1643 | vattr.va_gid = uap->gid; | |
1644 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1645 | } |
fc2aed1e | 1646 | VOP_UNLOCK(vp); |
8429d022 | 1647 | return (error); |
d67a03eb BJ |
1648 | } |
1649 | ||
6a6a1e5f KM |
1650 | /* |
1651 | * Set the access and modification times of a file. | |
1652 | */ | |
9e97623a | 1653 | struct utimes_args { |
7121fdf0 | 1654 | char *path; |
9e97623a CT |
1655 | struct timeval *tptr; |
1656 | }; | |
6a6a1e5f KM |
1657 | /* ARGSUSED */ |
1658 | utimes(p, uap, retval) | |
5e00df3b | 1659 | struct proc *p; |
9e97623a | 1660 | register struct utimes_args *uap; |
6a6a1e5f KM |
1661 | int *retval; |
1662 | { | |
fc2aed1e | 1663 | register struct vnode *vp; |
bb1b75f4 | 1664 | struct timeval tv[2]; |
fc2aed1e | 1665 | struct vattr vattr; |
8e88b0cd | 1666 | int error; |
8429d022 | 1667 | struct nameidata nd; |
bb1b75f4 | 1668 | |
f8ee9a49 KB |
1669 | VATTR_NULL(&vattr); |
1670 | if (uap->tptr == NULL) { | |
1671 | microtime(&tv[0]); | |
1672 | tv[1] = tv[0]; | |
fcba749b | 1673 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1674 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1675 | return (error); | |
7121fdf0 | 1676 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1677 | if (error = namei(&nd)) |
8429d022 | 1678 | return (error); |
dd4c01c2 | 1679 | vp = nd.ni_vp; |
4c5d3e43 | 1680 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1681 | VOP_LOCK(vp); |
7121fdf0 | 1682 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1683 | error = EROFS; |
7121fdf0 KB |
1684 | else { |
1685 | vattr.va_atime.ts_sec = tv[0].tv_sec; | |
1686 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1687 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1688 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
1689 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
bb1b75f4 | 1690 | } |
fc2aed1e | 1691 | vput(vp); |
8429d022 | 1692 | return (error); |
d67a03eb | 1693 | } |
64d3a787 | 1694 | |
7121fdf0 KB |
1695 | /* |
1696 | * Truncate a file given its path name. | |
1697 | */ | |
95c0eb1e | 1698 | struct truncate_args { |
7121fdf0 | 1699 | char *path; |
2f2b3b3d CT |
1700 | int pad; |
1701 | off_t length; | |
1702 | }; | |
be320a2b | 1703 | /* ARGSUSED */ |
201e5411 | 1704 | truncate(p, uap, retval) |
5e00df3b | 1705 | struct proc *p; |
95c0eb1e | 1706 | register struct truncate_args *uap; |
6a6a1e5f KM |
1707 | int *retval; |
1708 | { | |
fc2aed1e KM |
1709 | register struct vnode *vp; |
1710 | struct vattr vattr; | |
1711 | int error; | |
8429d022 | 1712 | struct nameidata nd; |
528f664c | 1713 | |
7121fdf0 | 1714 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1715 | if (error = namei(&nd)) |
8429d022 | 1716 | return (error); |
dd4c01c2 | 1717 | vp = nd.ni_vp; |
4c5d3e43 | 1718 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
dbcf7de6 | 1719 | VOP_LOCK(vp); |
7121fdf0 | 1720 | if (vp->v_type == VDIR) |
fc2aed1e | 1721 | error = EISDIR; |
7121fdf0 KB |
1722 | else if ((error = vn_writechk(vp)) == 0 && |
1723 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p)) == 0) { | |
1724 | VATTR_NULL(&vattr); | |
1725 | vattr.va_size = uap->length; | |
1726 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
528f664c | 1727 | } |
fc2aed1e | 1728 | vput(vp); |
8429d022 | 1729 | return (error); |
528f664c SL |
1730 | } |
1731 | ||
7121fdf0 KB |
1732 | /* |
1733 | * Truncate a file given a file descriptor. | |
1734 | */ | |
95c0eb1e | 1735 | struct ftruncate_args { |
2f2b3b3d CT |
1736 | int fd; |
1737 | int pad; | |
1738 | off_t length; | |
1739 | }; | |
6a6a1e5f | 1740 | /* ARGSUSED */ |
201e5411 | 1741 | ftruncate(p, uap, retval) |
5e00df3b | 1742 | struct proc *p; |
95c0eb1e | 1743 | register struct ftruncate_args *uap; |
6a6a1e5f KM |
1744 | int *retval; |
1745 | { | |
fc2aed1e KM |
1746 | struct vattr vattr; |
1747 | struct vnode *vp; | |
528f664c | 1748 | struct file *fp; |
fc2aed1e KM |
1749 | int error; |
1750 | ||
5e00df3b | 1751 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1752 | return (error); |
fc2aed1e | 1753 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1754 | return (EINVAL); |
fc2aed1e | 1755 | vp = (struct vnode *)fp->f_data; |
4c5d3e43 | 1756 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1757 | VOP_LOCK(vp); |
7121fdf0 | 1758 | if (vp->v_type == VDIR) |
fc2aed1e | 1759 | error = EISDIR; |
7121fdf0 KB |
1760 | else if ((error = vn_writechk(vp)) == 0) { |
1761 | VATTR_NULL(&vattr); | |
1762 | vattr.va_size = uap->length; | |
1763 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); | |
528f664c | 1764 | } |
fc2aed1e | 1765 | VOP_UNLOCK(vp); |
8429d022 | 1766 | return (error); |
4f083fd7 SL |
1767 | } |
1768 | ||
2f2b3b3d CT |
1769 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1770 | /* | |
1771 | * Truncate a file given its path name. | |
1772 | */ | |
95c0eb1e | 1773 | struct otruncate_args { |
7121fdf0 | 1774 | char *path; |
9e97623a CT |
1775 | long length; |
1776 | }; | |
2f2b3b3d | 1777 | /* ARGSUSED */ |
51a9a1cf | 1778 | otruncate(p, uap, retval) |
2f2b3b3d | 1779 | struct proc *p; |
95c0eb1e | 1780 | register struct otruncate_args *uap; |
2f2b3b3d CT |
1781 | int *retval; |
1782 | { | |
95c0eb1e | 1783 | struct truncate_args nuap; |
2f2b3b3d | 1784 | |
7121fdf0 | 1785 | nuap.path = uap->path; |
2f2b3b3d | 1786 | nuap.length = uap->length; |
95c0eb1e | 1787 | return (truncate(p, &nuap, retval)); |
2f2b3b3d CT |
1788 | } |
1789 | ||
1790 | /* | |
1791 | * Truncate a file given a file descriptor. | |
1792 | */ | |
95c0eb1e | 1793 | struct oftruncate_args { |
9e97623a CT |
1794 | int fd; |
1795 | long length; | |
1796 | }; | |
2f2b3b3d | 1797 | /* ARGSUSED */ |
51a9a1cf | 1798 | oftruncate(p, uap, retval) |
2f2b3b3d | 1799 | struct proc *p; |
95c0eb1e | 1800 | register struct oftruncate_args *uap; |
2f2b3b3d CT |
1801 | int *retval; |
1802 | { | |
95c0eb1e | 1803 | struct ftruncate_args nuap; |
2f2b3b3d CT |
1804 | |
1805 | nuap.fd = uap->fd; | |
1806 | nuap.length = uap->length; | |
95c0eb1e | 1807 | return (ftruncate(p, &nuap, retval)); |
2f2b3b3d CT |
1808 | } |
1809 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1810 | ||
4f083fd7 | 1811 | /* |
7121fdf0 | 1812 | * Sync an open file. |
4f083fd7 | 1813 | */ |
9e97623a CT |
1814 | struct fsync_args { |
1815 | int fd; | |
1816 | }; | |
6a6a1e5f KM |
1817 | /* ARGSUSED */ |
1818 | fsync(p, uap, retval) | |
5e00df3b | 1819 | struct proc *p; |
9e97623a | 1820 | struct fsync_args *uap; |
6a6a1e5f KM |
1821 | int *retval; |
1822 | { | |
e79467ea | 1823 | register struct vnode *vp; |
4f083fd7 | 1824 | struct file *fp; |
fc2aed1e | 1825 | int error; |
4f083fd7 | 1826 | |
5e00df3b | 1827 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1828 | return (error); |
e79467ea KM |
1829 | vp = (struct vnode *)fp->f_data; |
1830 | VOP_LOCK(vp); | |
09d2ef1a | 1831 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1832 | VOP_UNLOCK(vp); |
8429d022 | 1833 | return (error); |
528f664c SL |
1834 | } |
1835 | ||
4f083fd7 | 1836 | /* |
7121fdf0 KB |
1837 | * Rename files. Source and destination must either both be directories, |
1838 | * or both not be directories. If target is a directory, it must be empty. | |
4f083fd7 | 1839 | */ |
9e97623a CT |
1840 | struct rename_args { |
1841 | char *from; | |
1842 | char *to; | |
1843 | }; | |
6a6a1e5f KM |
1844 | /* ARGSUSED */ |
1845 | rename(p, uap, retval) | |
5e00df3b | 1846 | struct proc *p; |
9e97623a | 1847 | register struct rename_args *uap; |
6a6a1e5f KM |
1848 | int *retval; |
1849 | { | |
fc2aed1e | 1850 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1851 | struct nameidata fromnd, tond; |
fc2aed1e | 1852 | int error; |
4f083fd7 | 1853 | |
a5368812 | 1854 | CHECKPOINTREF; |
dd4c01c2 KM |
1855 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1856 | uap->from, p); | |
1857 | if (error = namei(&fromnd)) | |
8429d022 | 1858 | return (error); |
5718fad3 | 1859 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1860 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1861 | UIO_USERSPACE, uap->to, p); | |
1862 | if (error = namei(&tond)) { | |
cfef4373 | 1863 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1864 | vrele(fromnd.ni_dvp); |
66955caf KM |
1865 | vrele(fvp); |
1866 | goto out1; | |
1867 | } | |
fc2aed1e KM |
1868 | tdvp = tond.ni_dvp; |
1869 | tvp = tond.ni_vp; | |
1870 | if (tvp != NULL) { | |
1871 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1872 | error = ENOTDIR; |
fc2aed1e KM |
1873 | goto out; |
1874 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1875 | error = EISDIR; |
fc2aed1e | 1876 | goto out; |
a5390dce | 1877 | } |
64d3a787 | 1878 | } |
fe562f32 | 1879 | if (fvp == tdvp) |
fc2aed1e | 1880 | error = EINVAL; |
fe562f32 | 1881 | /* |
5718fad3 KM |
1882 | * If source is the same as the destination (that is the |
1883 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1884 | * then there is nothing to do. |
1885 | */ | |
5718fad3 | 1886 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1887 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1888 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1889 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1890 | error = -1; |
fc2aed1e | 1891 | out: |
66955caf | 1892 | if (!error) { |
4c5d3e43 | 1893 | VOP_LEASE(tdvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1894 | if (fromnd.ni_dvp != tdvp) |
4c5d3e43 | 1895 | VOP_LEASE(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1896 | if (tvp) |
4c5d3e43 | 1897 | VOP_LEASE(tvp, p, p->p_ucred, LEASE_WRITE); |
cfef4373 JH |
1898 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1899 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1900 | } else { |
cfef4373 | 1901 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1902 | if (tdvp == tvp) |
1903 | vrele(tdvp); | |
1904 | else | |
1905 | vput(tdvp); | |
66955caf KM |
1906 | if (tvp) |
1907 | vput(tvp); | |
cfef4373 | 1908 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1909 | vrele(fromnd.ni_dvp); |
66955caf | 1910 | vrele(fvp); |
64d3a787 | 1911 | } |
c03959f9 | 1912 | p->p_spare[1]--; |
5718fad3 | 1913 | vrele(tond.ni_startdir); |
dd4c01c2 | 1914 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1915 | out1: |
c03959f9 | 1916 | p->p_spare[1]--; |
bb9644de KM |
1917 | if (fromnd.ni_startdir) |
1918 | vrele(fromnd.ni_startdir); | |
dd4c01c2 | 1919 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1920 | CHECKREFS("rename"); |
fe562f32 | 1921 | if (error == -1) |
8429d022 MK |
1922 | return (0); |
1923 | return (error); | |
64d3a787 | 1924 | } |
88a7a62a | 1925 | |
88a7a62a | 1926 | /* |
7121fdf0 | 1927 | * Make a directory file. |
88a7a62a | 1928 | */ |
9e97623a | 1929 | struct mkdir_args { |
7121fdf0 KB |
1930 | char *path; |
1931 | int mode; | |
9e97623a | 1932 | }; |
6a6a1e5f KM |
1933 | /* ARGSUSED */ |
1934 | mkdir(p, uap, retval) | |
5e00df3b | 1935 | struct proc *p; |
9e97623a | 1936 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1937 | int *retval; |
1938 | { | |
fc2aed1e KM |
1939 | register struct vnode *vp; |
1940 | struct vattr vattr; | |
1941 | int error; | |
8429d022 | 1942 | struct nameidata nd; |
88a7a62a | 1943 | |
a5368812 | 1944 | CHECKPOINTREF; |
7121fdf0 | 1945 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1946 | if (error = namei(&nd)) |
8429d022 | 1947 | return (error); |
dd4c01c2 | 1948 | vp = nd.ni_vp; |
fc2aed1e | 1949 | if (vp != NULL) { |
dd4c01c2 KM |
1950 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1951 | if (nd.ni_dvp == vp) | |
1952 | vrele(nd.ni_dvp); | |
6c44e83b | 1953 | else |
dd4c01c2 | 1954 | vput(nd.ni_dvp); |
66955caf | 1955 | vrele(vp); |
a5368812 | 1956 | CHECKREFS("mkdir1"); |
8429d022 | 1957 | return (EEXIST); |
88a7a62a | 1958 | } |
3ee1461b | 1959 | VATTR_NULL(&vattr); |
fc2aed1e | 1960 | vattr.va_type = VDIR; |
7121fdf0 | 1961 | vattr.va_mode = (uap->mode & ACCESSPERMS) &~ p->p_fd->fd_cmask; |
4c5d3e43 | 1962 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1963 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); |
5dfd04f0 | 1964 | if (!error) |
dd4c01c2 | 1965 | vput(nd.ni_vp); |
a5368812 | 1966 | CHECKREFS("mkdir2"); |
8429d022 | 1967 | return (error); |
88a7a62a SL |
1968 | } |
1969 | ||
1970 | /* | |
7121fdf0 | 1971 | * Remove a directory file. |
88a7a62a | 1972 | */ |
9e97623a | 1973 | struct rmdir_args { |
7121fdf0 | 1974 | char *path; |
9e97623a | 1975 | }; |
6a6a1e5f KM |
1976 | /* ARGSUSED */ |
1977 | rmdir(p, uap, retval) | |
5e00df3b | 1978 | struct proc *p; |
9e97623a | 1979 | struct rmdir_args *uap; |
6a6a1e5f KM |
1980 | int *retval; |
1981 | { | |
fc2aed1e KM |
1982 | register struct vnode *vp; |
1983 | int error; | |
8429d022 | 1984 | struct nameidata nd; |
88a7a62a | 1985 | |
a5368812 | 1986 | CHECKPOINTREF; |
7121fdf0 | 1987 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1988 | if (error = namei(&nd)) |
8429d022 | 1989 | return (error); |
dd4c01c2 | 1990 | vp = nd.ni_vp; |
fc2aed1e KM |
1991 | if (vp->v_type != VDIR) { |
1992 | error = ENOTDIR; | |
88a7a62a SL |
1993 | goto out; |
1994 | } | |
1995 | /* | |
fc2aed1e | 1996 | * No rmdir "." please. |
88a7a62a | 1997 | */ |
dd4c01c2 | 1998 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1999 | error = EINVAL; |
88a7a62a SL |
2000 | goto out; |
2001 | } | |
2002 | /* | |
d4ed1dcd | 2003 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 2004 | */ |
fc2aed1e KM |
2005 | if (vp->v_flag & VROOT) |
2006 | error = EBUSY; | |
88a7a62a | 2007 | out: |
66955caf | 2008 | if (!error) { |
4c5d3e43 KM |
2009 | VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
2010 | VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE); | |
dd4c01c2 | 2011 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 2012 | } else { |
dd4c01c2 KM |
2013 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
2014 | if (nd.ni_dvp == vp) | |
2015 | vrele(nd.ni_dvp); | |
6c44e83b | 2016 | else |
dd4c01c2 | 2017 | vput(nd.ni_dvp); |
66955caf KM |
2018 | vput(vp); |
2019 | } | |
a5368812 | 2020 | CHECKREFS("rmdir"); |
8429d022 | 2021 | return (error); |
88a7a62a SL |
2022 | } |
2023 | ||
3d92fa10 KM |
2024 | #ifdef COMPAT_43 |
2025 | /* | |
2026 | * Read a block of directory entries in a file system independent format. | |
2027 | */ | |
9e97623a CT |
2028 | struct ogetdirentries_args { |
2029 | int fd; | |
2030 | char *buf; | |
7121fdf0 | 2031 | u_int count; |
9e97623a CT |
2032 | long *basep; |
2033 | }; | |
3d92fa10 KM |
2034 | ogetdirentries(p, uap, retval) |
2035 | struct proc *p; | |
9e97623a | 2036 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
2037 | int *retval; |
2038 | { | |
3d92fa10 KM |
2039 | register struct vnode *vp; |
2040 | struct file *fp; | |
2041 | struct uio auio, kuio; | |
2042 | struct iovec aiov, kiov; | |
2043 | struct dirent *dp, *edp; | |
2044 | caddr_t dirbuf; | |
165bf940 | 2045 | int error, eofflag, readcnt; |
d80c3f56 | 2046 | long loff; |
3d92fa10 KM |
2047 | |
2048 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
2049 | return (error); | |
2050 | if ((fp->f_flag & FREAD) == 0) | |
2051 | return (EBADF); | |
2052 | vp = (struct vnode *)fp->f_data; | |
165bf940 | 2053 | unionread: |
3d92fa10 KM |
2054 | if (vp->v_type != VDIR) |
2055 | return (EINVAL); | |
2056 | aiov.iov_base = uap->buf; | |
2057 | aiov.iov_len = uap->count; | |
2058 | auio.uio_iov = &aiov; | |
2059 | auio.uio_iovcnt = 1; | |
2060 | auio.uio_rw = UIO_READ; | |
2061 | auio.uio_segflg = UIO_USERSPACE; | |
2062 | auio.uio_procp = p; | |
2063 | auio.uio_resid = uap->count; | |
2064 | VOP_LOCK(vp); | |
d80c3f56 | 2065 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 2066 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 2067 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
165bf940 KM |
2068 | error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, |
2069 | (u_long *)0, 0); | |
a801b5ab KM |
2070 | fp->f_offset = auio.uio_offset; |
2071 | } else | |
3d92fa10 KM |
2072 | # endif |
2073 | { | |
2074 | kuio = auio; | |
2075 | kuio.uio_iov = &kiov; | |
2076 | kuio.uio_segflg = UIO_SYSSPACE; | |
2077 | kiov.iov_len = uap->count; | |
2078 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
2079 | kiov.iov_base = dirbuf; | |
165bf940 KM |
2080 | error = VOP_READDIR(vp, &kuio, fp->f_cred, &eofflag, |
2081 | (u_long *)0, 0); | |
a801b5ab | 2082 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
2083 | if (error == 0) { |
2084 | readcnt = uap->count - kuio.uio_resid; | |
2085 | edp = (struct dirent *)&dirbuf[readcnt]; | |
2086 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 2087 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 2088 | /* |
30445fe6 KM |
2089 | * The expected low byte of |
2090 | * dp->d_namlen is our dp->d_type. | |
2091 | * The high MBZ byte of dp->d_namlen | |
2092 | * is our dp->d_namlen. | |
d80c3f56 | 2093 | */ |
30445fe6 KM |
2094 | dp->d_type = dp->d_namlen; |
2095 | dp->d_namlen = 0; | |
2096 | # else | |
2097 | /* | |
2098 | * The dp->d_type is the high byte | |
2099 | * of the expected dp->d_namlen, | |
2100 | * so must be zero'ed. | |
2101 | */ | |
2102 | dp->d_type = 0; | |
3d92fa10 KM |
2103 | # endif |
2104 | if (dp->d_reclen > 0) { | |
2105 | dp = (struct dirent *) | |
2106 | ((char *)dp + dp->d_reclen); | |
2107 | } else { | |
2108 | error = EIO; | |
2109 | break; | |
2110 | } | |
2111 | } | |
2112 | if (dp >= edp) | |
2113 | error = uiomove(dirbuf, readcnt, &auio); | |
2114 | } | |
2115 | FREE(dirbuf, M_TEMP); | |
2116 | } | |
3d92fa10 KM |
2117 | VOP_UNLOCK(vp); |
2118 | if (error) | |
2119 | return (error); | |
165bf940 KM |
2120 | |
2121 | #ifdef UNION | |
2122 | { | |
2123 | extern int (**union_vnodeop_p)(); | |
2124 | extern struct vnode *union_lowervp __P((struct vnode *)); | |
2125 | ||
2126 | if ((uap->count == auio.uio_resid) && | |
2127 | (vp->v_op == union_vnodeop_p)) { | |
2128 | struct vnode *lvp; | |
2129 | ||
2130 | lvp = union_lowervp(vp); | |
88edbcd4 JSP |
2131 | if (lvp != NULLVP) { |
2132 | struct vattr va; | |
2133 | ||
2134 | /* | |
2135 | * If the directory is opaque, | |
2136 | * then don't show lower entries | |
2137 | */ | |
2138 | error = VOP_GETATTR(vp, &va, fp->f_cred, p); | |
2139 | if (va.va_flags & OPAQUE) { | |
2140 | vrele(lvp); | |
2141 | lvp = NULL; | |
2142 | } | |
2143 | } | |
2144 | ||
165bf940 KM |
2145 | if (lvp != NULLVP) { |
2146 | VOP_LOCK(lvp); | |
2147 | error = VOP_OPEN(lvp, FREAD, fp->f_cred, p); | |
2148 | VOP_UNLOCK(lvp); | |
2149 | ||
2150 | if (error) { | |
2151 | vrele(lvp); | |
2152 | return (error); | |
2153 | } | |
2154 | fp->f_data = (caddr_t) lvp; | |
2155 | fp->f_offset = 0; | |
2156 | error = vn_close(vp, FREAD, fp->f_cred, p); | |
2157 | if (error) | |
2158 | return (error); | |
2159 | vp = lvp; | |
2160 | goto unionread; | |
2161 | } | |
2162 | } | |
2163 | } | |
2164 | #endif /* UNION */ | |
2165 | ||
2166 | if ((uap->count == auio.uio_resid) && | |
2167 | (vp->v_flag & VROOT) && | |
2168 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
2169 | struct vnode *tvp = vp; | |
2170 | vp = vp->v_mount->mnt_vnodecovered; | |
2171 | VREF(vp); | |
2172 | fp->f_data = (caddr_t) vp; | |
2173 | fp->f_offset = 0; | |
2174 | vrele(tvp); | |
2175 | goto unionread; | |
2176 | } | |
d80c3f56 | 2177 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
2178 | *retval = uap->count - auio.uio_resid; |
2179 | return (error); | |
2180 | } | |
165bf940 | 2181 | #endif /* COMPAT_43 */ |
3d92fa10 | 2182 | |
fc2aed1e | 2183 | /* |
d4ed1dcd | 2184 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 2185 | */ |
9e97623a CT |
2186 | struct getdirentries_args { |
2187 | int fd; | |
2188 | char *buf; | |
7121fdf0 | 2189 | u_int count; |
9e97623a CT |
2190 | long *basep; |
2191 | }; | |
6a6a1e5f | 2192 | getdirentries(p, uap, retval) |
5e00df3b | 2193 | struct proc *p; |
9e97623a | 2194 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
2195 | int *retval; |
2196 | { | |
e79467ea | 2197 | register struct vnode *vp; |
8462a185 | 2198 | struct file *fp; |
fc2aed1e KM |
2199 | struct uio auio; |
2200 | struct iovec aiov; | |
d80c3f56 | 2201 | long loff; |
165bf940 | 2202 | int error, eofflag; |
fc2aed1e | 2203 | |
5e00df3b | 2204 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 2205 | return (error); |
fc2aed1e | 2206 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 2207 | return (EBADF); |
e79467ea | 2208 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 2209 | unionread: |
e79467ea | 2210 | if (vp->v_type != VDIR) |
8429d022 | 2211 | return (EINVAL); |
fc2aed1e KM |
2212 | aiov.iov_base = uap->buf; |
2213 | aiov.iov_len = uap->count; | |
2214 | auio.uio_iov = &aiov; | |
2215 | auio.uio_iovcnt = 1; | |
2216 | auio.uio_rw = UIO_READ; | |
2217 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 2218 | auio.uio_procp = p; |
fc2aed1e | 2219 | auio.uio_resid = uap->count; |
e79467ea | 2220 | VOP_LOCK(vp); |
d80c3f56 | 2221 | loff = auio.uio_offset = fp->f_offset; |
165bf940 | 2222 | error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, (u_long *)0, 0); |
e79467ea KM |
2223 | fp->f_offset = auio.uio_offset; |
2224 | VOP_UNLOCK(vp); | |
2225 | if (error) | |
8429d022 | 2226 | return (error); |
57b06c10 JSP |
2227 | |
2228 | #ifdef UNION | |
2229 | { | |
2230 | extern int (**union_vnodeop_p)(); | |
2231 | extern struct vnode *union_lowervp __P((struct vnode *)); | |
2232 | ||
2233 | if ((uap->count == auio.uio_resid) && | |
2234 | (vp->v_op == union_vnodeop_p)) { | |
cafc3164 | 2235 | struct vnode *lvp; |
57b06c10 | 2236 | |
cafc3164 | 2237 | lvp = union_lowervp(vp); |
88edbcd4 JSP |
2238 | if (lvp != NULLVP) { |
2239 | struct vattr va; | |
2240 | ||
2241 | /* | |
2242 | * If the directory is opaque, | |
2243 | * then don't show lower entries | |
2244 | */ | |
2245 | error = VOP_GETATTR(vp, &va, fp->f_cred, p); | |
2246 | if (va.va_flags & OPAQUE) { | |
2247 | vrele(lvp); | |
2248 | lvp = NULL; | |
2249 | } | |
2250 | } | |
2251 | ||
cafc3164 JSP |
2252 | if (lvp != NULLVP) { |
2253 | VOP_LOCK(lvp); | |
165bf940 | 2254 | error = VOP_OPEN(lvp, FREAD, fp->f_cred, p); |
cafc3164 | 2255 | VOP_UNLOCK(lvp); |
57b06c10 JSP |
2256 | |
2257 | if (error) { | |
cafc3164 | 2258 | vrele(lvp); |
57b06c10 JSP |
2259 | return (error); |
2260 | } | |
cafc3164 | 2261 | fp->f_data = (caddr_t) lvp; |
57b06c10 | 2262 | fp->f_offset = 0; |
cafc3164 | 2263 | error = vn_close(vp, FREAD, fp->f_cred, p); |
57b06c10 JSP |
2264 | if (error) |
2265 | return (error); | |
cafc3164 | 2266 | vp = lvp; |
57b06c10 JSP |
2267 | goto unionread; |
2268 | } | |
2269 | } | |
2270 | } | |
2271 | #endif | |
2272 | ||
95a9cadb JSP |
2273 | if ((uap->count == auio.uio_resid) && |
2274 | (vp->v_flag & VROOT) && | |
2275 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
2276 | struct vnode *tvp = vp; | |
2277 | vp = vp->v_mount->mnt_vnodecovered; | |
2278 | VREF(vp); | |
2279 | fp->f_data = (caddr_t) vp; | |
2280 | fp->f_offset = 0; | |
2281 | vrele(tvp); | |
2282 | goto unionread; | |
2283 | } | |
d80c3f56 | 2284 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 2285 | *retval = uap->count - auio.uio_resid; |
8429d022 | 2286 | return (error); |
88a7a62a SL |
2287 | } |
2288 | ||
2289 | /* | |
d4ed1dcd | 2290 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 2291 | */ |
9e97623a | 2292 | struct umask_args { |
7121fdf0 | 2293 | int newmask; |
9e97623a CT |
2294 | }; |
2295 | mode_t /* XXX */ | |
6a6a1e5f | 2296 | umask(p, uap, retval) |
5e00df3b | 2297 | struct proc *p; |
9e97623a | 2298 | struct umask_args *uap; |
6a6a1e5f KM |
2299 | int *retval; |
2300 | { | |
7121fdf0 | 2301 | register struct filedesc *fdp; |
88a7a62a | 2302 | |
7121fdf0 | 2303 | fdp = p->p_fd; |
5e00df3b | 2304 | *retval = fdp->fd_cmask; |
7121fdf0 | 2305 | fdp->fd_cmask = uap->newmask & ALLPERMS; |
8429d022 | 2306 | return (0); |
fc2aed1e KM |
2307 | } |
2308 | ||
b0a98f13 MT |
2309 | /* |
2310 | * Void all references to file by ripping underlying filesystem | |
2311 | * away from vnode. | |
2312 | */ | |
9e97623a | 2313 | struct revoke_args { |
7121fdf0 | 2314 | char *path; |
9e97623a | 2315 | }; |
6a6a1e5f KM |
2316 | /* ARGSUSED */ |
2317 | revoke(p, uap, retval) | |
5e00df3b | 2318 | struct proc *p; |
9e97623a | 2319 | register struct revoke_args *uap; |
6a6a1e5f KM |
2320 | int *retval; |
2321 | { | |
b0a98f13 MT |
2322 | register struct vnode *vp; |
2323 | struct vattr vattr; | |
2324 | int error; | |
8429d022 | 2325 | struct nameidata nd; |
b0a98f13 | 2326 | |
7121fdf0 | 2327 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 2328 | if (error = namei(&nd)) |
8429d022 | 2329 | return (error); |
dd4c01c2 | 2330 | vp = nd.ni_vp; |
b0a98f13 MT |
2331 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2332 | error = EINVAL; | |
2333 | goto out; | |
2334 | } | |
2c69fe14 | 2335 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2336 | goto out; |
8429d022 MK |
2337 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2338 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2339 | goto out; |
8b81d198 | 2340 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2341 | vgoneall(vp); |
b0a98f13 MT |
2342 | out: |
2343 | vrele(vp); | |
8429d022 | 2344 | return (error); |
b0a98f13 MT |
2345 | } |
2346 | ||
d4ed1dcd KM |
2347 | /* |
2348 | * Convert a user file descriptor to a kernel file entry. | |
2349 | */ | |
7121fdf0 | 2350 | getvnode(fdp, fd, fpp) |
5e00df3b | 2351 | struct filedesc *fdp; |
fc2aed1e | 2352 | struct file **fpp; |
7121fdf0 | 2353 | int fd; |
fc2aed1e KM |
2354 | { |
2355 | struct file *fp; | |
2356 | ||
7121fdf0 KB |
2357 | if ((u_int)fd >= fdp->fd_nfiles || |
2358 | (fp = fdp->fd_ofiles[fd]) == NULL) | |
fc2aed1e KM |
2359 | return (EBADF); |
2360 | if (fp->f_type != DTYPE_VNODE) | |
2361 | return (EINVAL); | |
2362 | *fpp = fp; | |
2363 | return (0); | |
88a7a62a | 2364 | } |