Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
fc2aed1e KM |
2 | * Copyright (c) 1989 The Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
fc2aed1e KM |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * | |
6a6a1e5f | 17 | * @(#)vfs_syscalls.c 7.48 (Berkeley) %G% |
da7c5cc6 | 18 | */ |
6459ebe0 | 19 | |
94368568 JB |
20 | #include "param.h" |
21 | #include "systm.h" | |
fc2aed1e | 22 | #include "syscontext.h" |
94368568 JB |
23 | #include "kernel.h" |
24 | #include "file.h" | |
25 | #include "stat.h" | |
fc2aed1e | 26 | #include "vnode.h" |
fc2aed1e | 27 | #include "mount.h" |
94368568 | 28 | #include "proc.h" |
94368568 | 29 | #include "uio.h" |
fc2aed1e | 30 | #include "malloc.h" |
88a7a62a | 31 | |
7ec65699 | 32 | #undef RETURN |
6a6a1e5f | 33 | #define RETURN(val) { u.u_error = (val); if (u.u_spare[0] != 0) panic("lock count"); return (u.u_error); } |
7ec65699 | 34 | |
fc2aed1e KM |
35 | /* |
36 | * Virtual File System System Calls | |
37 | */ | |
3e78e260 | 38 | |
4f083fd7 | 39 | /* |
fc2aed1e | 40 | * mount system call |
4f083fd7 | 41 | */ |
6a6a1e5f KM |
42 | /* ARGSUSED */ |
43 | mount(p, uap, retval) | |
44 | register struct proc *p; | |
45 | register struct args { | |
fc2aed1e KM |
46 | int type; |
47 | char *dir; | |
48 | int flags; | |
49 | caddr_t data; | |
6a6a1e5f KM |
50 | } *uap; |
51 | int *retval; | |
52 | { | |
53 | register struct nameidata *ndp = &u.u_nd; | |
d48157d5 KM |
54 | register struct vnode *vp; |
55 | register struct mount *mp; | |
47971887 | 56 | int error, flag; |
3e78e260 | 57 | |
fc2aed1e KM |
58 | /* |
59 | * Must be super user | |
60 | */ | |
6a6a1e5f | 61 | if (error = suser(ndp->ni_cred, &u.u_acflag)) |
fc2aed1e KM |
62 | RETURN (error); |
63 | /* | |
64 | * Get vnode to be covered | |
65 | */ | |
66 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; | |
67 | ndp->ni_segflg = UIO_USERSPACE; | |
68 | ndp->ni_dirp = uap->dir; | |
69 | if (error = namei(ndp)) | |
70 | RETURN (error); | |
71 | vp = ndp->ni_vp; | |
54fb9dc2 | 72 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
73 | if ((vp->v_flag & VROOT) == 0) { |
74 | vput(vp); | |
75 | RETURN (EINVAL); | |
76 | } | |
77 | mp = vp->v_mount; | |
78 | /* | |
79 | * We allow going from read-only to read-write, | |
80 | * but not from read-write to read-only. | |
81 | */ | |
54fb9dc2 KM |
82 | if ((mp->mnt_flag & MNT_RDONLY) == 0 && |
83 | (uap->flags & MNT_RDONLY) != 0) { | |
d48157d5 KM |
84 | vput(vp); |
85 | RETURN (EOPNOTSUPP); /* Needs translation */ | |
86 | } | |
54fb9dc2 KM |
87 | flag = mp->mnt_flag; |
88 | mp->mnt_flag |= MNT_UPDATE; | |
d48157d5 KM |
89 | VOP_UNLOCK(vp); |
90 | goto update; | |
91 | } | |
89cdb378 | 92 | vinvalbuf(vp, 1); |
8b81d198 | 93 | if (vp->v_usecount != 1) { |
fc2aed1e KM |
94 | vput(vp); |
95 | RETURN (EBUSY); | |
96 | } | |
97 | if (vp->v_type != VDIR) { | |
98 | vput(vp); | |
99 | RETURN (ENOTDIR); | |
100 | } | |
62d239e5 | 101 | if ((unsigned long)uap->type > MOUNT_MAXTYPE || |
fc2aed1e KM |
102 | vfssw[uap->type] == (struct vfsops *)0) { |
103 | vput(vp); | |
104 | RETURN (ENODEV); | |
105 | } | |
106 | ||
107 | /* | |
d48157d5 | 108 | * Allocate and initialize the file system. |
fc2aed1e KM |
109 | */ |
110 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
111 | M_MOUNT, M_WAITOK); | |
54fb9dc2 KM |
112 | mp->mnt_op = vfssw[uap->type]; |
113 | mp->mnt_flag = 0; | |
114 | mp->mnt_exroot = 0; | |
115 | mp->mnt_mounth = NULLVP; | |
d48157d5 KM |
116 | if (error = vfs_lock(mp)) { |
117 | free((caddr_t)mp, M_MOUNT); | |
118 | vput(vp); | |
119 | RETURN (error); | |
120 | } | |
121 | if (vp->v_mountedhere != (struct mount *)0) { | |
122 | vfs_unlock(mp); | |
123 | free((caddr_t)mp, M_MOUNT); | |
124 | vput(vp); | |
125 | RETURN (EBUSY); | |
126 | } | |
d48157d5 | 127 | vp->v_mountedhere = mp; |
54fb9dc2 | 128 | mp->mnt_vnodecovered = vp; |
d48157d5 KM |
129 | update: |
130 | /* | |
131 | * Set the mount level flags. | |
132 | */ | |
54fb9dc2 KM |
133 | if (uap->flags & MNT_RDONLY) |
134 | mp->mnt_flag |= MNT_RDONLY; | |
d48157d5 | 135 | else |
54fb9dc2 KM |
136 | mp->mnt_flag &= ~MNT_RDONLY; |
137 | if (uap->flags & MNT_NOSUID) | |
138 | mp->mnt_flag |= MNT_NOSUID; | |
d48157d5 | 139 | else |
54fb9dc2 KM |
140 | mp->mnt_flag &= ~MNT_NOSUID; |
141 | if (uap->flags & MNT_NOEXEC) | |
142 | mp->mnt_flag |= MNT_NOEXEC; | |
d48157d5 | 143 | else |
54fb9dc2 KM |
144 | mp->mnt_flag &= ~MNT_NOEXEC; |
145 | if (uap->flags & MNT_NODEV) | |
146 | mp->mnt_flag |= MNT_NODEV; | |
d48157d5 | 147 | else |
54fb9dc2 KM |
148 | mp->mnt_flag &= ~MNT_NODEV; |
149 | if (uap->flags & MNT_SYNCHRONOUS) | |
150 | mp->mnt_flag |= MNT_SYNCHRONOUS; | |
d48157d5 | 151 | else |
54fb9dc2 | 152 | mp->mnt_flag &= ~MNT_SYNCHRONOUS; |
d48157d5 KM |
153 | /* |
154 | * Mount the filesystem. | |
155 | */ | |
156 | error = VFS_MOUNT(mp, uap->dir, uap->data, ndp); | |
54fb9dc2 KM |
157 | if (mp->mnt_flag & MNT_UPDATE) { |
158 | mp->mnt_flag &= ~MNT_UPDATE; | |
d48157d5 | 159 | vrele(vp); |
47971887 | 160 | if (error) |
54fb9dc2 | 161 | mp->mnt_flag = flag; |
d48157d5 KM |
162 | RETURN (error); |
163 | } | |
92d0de98 KM |
164 | /* |
165 | * Put the new filesystem on the mount list after root. | |
166 | */ | |
54fb9dc2 KM |
167 | mp->mnt_next = rootfs->mnt_next; |
168 | mp->mnt_prev = rootfs; | |
169 | rootfs->mnt_next = mp; | |
170 | mp->mnt_next->mnt_prev = mp; | |
fc2aed1e | 171 | cache_purge(vp); |
fc2aed1e | 172 | if (!error) { |
d48157d5 | 173 | VOP_UNLOCK(vp); |
fc2aed1e | 174 | vfs_unlock(mp); |
97d8a528 | 175 | error = VFS_START(mp, 0); |
fc2aed1e KM |
176 | } else { |
177 | vfs_remove(mp); | |
178 | free((caddr_t)mp, M_MOUNT); | |
d48157d5 | 179 | vput(vp); |
fc2aed1e KM |
180 | } |
181 | RETURN (error); | |
3e78e260 BJ |
182 | } |
183 | ||
4f083fd7 | 184 | /* |
fc2aed1e KM |
185 | * Unmount system call. |
186 | * | |
187 | * Note: unmount takes a path to the vnode mounted on as argument, | |
188 | * not special file (as before). | |
4f083fd7 | 189 | */ |
6a6a1e5f KM |
190 | /* ARGSUSED */ |
191 | unmount(p, uap, retval) | |
192 | register struct proc *p; | |
193 | register struct args { | |
fc2aed1e KM |
194 | char *pathp; |
195 | int flags; | |
6a6a1e5f KM |
196 | } *uap; |
197 | int *retval; | |
198 | { | |
fc2aed1e | 199 | register struct vnode *vp; |
6a6a1e5f | 200 | register struct nameidata *ndp = &u.u_nd; |
9151110e | 201 | struct mount *mp; |
fc2aed1e KM |
202 | int error; |
203 | ||
204 | /* | |
205 | * Must be super user | |
206 | */ | |
6a6a1e5f | 207 | if (error = suser(ndp->ni_cred, &u.u_acflag)) |
fc2aed1e KM |
208 | RETURN (error); |
209 | ||
210 | ndp->ni_nameiop = LOOKUP | LOCKLEAF | FOLLOW; | |
211 | ndp->ni_segflg = UIO_USERSPACE; | |
212 | ndp->ni_dirp = uap->pathp; | |
213 | if (error = namei(ndp)) | |
214 | RETURN (error); | |
215 | vp = ndp->ni_vp; | |
216 | /* | |
217 | * Must be the root of the filesystem | |
218 | */ | |
219 | if ((vp->v_flag & VROOT) == 0) { | |
220 | vput(vp); | |
221 | RETURN (EINVAL); | |
222 | } | |
223 | mp = vp->v_mount; | |
224 | vput(vp); | |
9151110e KM |
225 | RETURN (dounmount(mp, uap->flags)); |
226 | } | |
227 | ||
228 | /* | |
229 | * Do an unmount. | |
230 | */ | |
231 | dounmount(mp, flags) | |
232 | register struct mount *mp; | |
233 | int flags; | |
234 | { | |
235 | struct vnode *coveredvp; | |
236 | int error; | |
237 | ||
54fb9dc2 | 238 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
239 | if (vfs_busy(mp)) |
240 | return (EBUSY); | |
54fb9dc2 | 241 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 242 | if (error = vfs_lock(mp)) |
9151110e | 243 | return (error); |
fc2aed1e KM |
244 | |
245 | xumount(mp); /* remove unused sticky files from text table */ | |
246 | cache_purgevfs(mp); /* remove cache entries for this file sys */ | |
a99a44da KM |
247 | if ((error = VFS_SYNC(mp, MNT_WAIT)) == 0 || (flags & MNT_FORCE)) |
248 | error = VFS_UNMOUNT(mp, flags); | |
54fb9dc2 | 249 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 250 | vfs_unbusy(mp); |
fc2aed1e KM |
251 | if (error) { |
252 | vfs_unlock(mp); | |
253 | } else { | |
254 | vrele(coveredvp); | |
255 | vfs_remove(mp); | |
256 | free((caddr_t)mp, M_MOUNT); | |
257 | } | |
9151110e | 258 | return (error); |
fc2aed1e KM |
259 | } |
260 | ||
261 | /* | |
262 | * Sync system call. | |
263 | * Sync each mounted filesystem. | |
264 | */ | |
ff4fb102 | 265 | /* ARGSUSED */ |
6a6a1e5f KM |
266 | sync(p, uap, retval) |
267 | register struct proc *p; | |
268 | struct args *uap; | |
269 | int *retval; | |
3e78e260 | 270 | { |
fc2aed1e | 271 | register struct mount *mp; |
c001b1c3 | 272 | struct mount *omp; |
fc2aed1e KM |
273 | |
274 | mp = rootfs; | |
275 | do { | |
62e35d50 KM |
276 | /* |
277 | * The lock check below is to avoid races with mount | |
278 | * and unmount. | |
279 | */ | |
54fb9dc2 | 280 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 281 | !vfs_busy(mp)) { |
fc2aed1e | 282 | VFS_SYNC(mp, MNT_NOWAIT); |
c001b1c3 | 283 | omp = mp; |
54fb9dc2 | 284 | mp = mp->mnt_next; |
c001b1c3 KM |
285 | vfs_unbusy(omp); |
286 | } else | |
54fb9dc2 | 287 | mp = mp->mnt_next; |
fc2aed1e KM |
288 | } while (mp != rootfs); |
289 | } | |
290 | ||
c001b1c3 KM |
291 | /* |
292 | * operate on filesystem quotas | |
293 | */ | |
6a6a1e5f KM |
294 | /* ARGSUSED */ |
295 | quotactl(p, uap, retval) | |
296 | register struct proc *p; | |
297 | register struct args { | |
c001b1c3 KM |
298 | char *path; |
299 | int cmd; | |
300 | int uid; | |
301 | caddr_t arg; | |
6a6a1e5f KM |
302 | } *uap; |
303 | int *retval; | |
304 | { | |
c001b1c3 | 305 | register struct mount *mp; |
6a6a1e5f | 306 | register struct nameidata *ndp = &u.u_nd; |
c001b1c3 KM |
307 | int error; |
308 | ||
309 | ndp->ni_nameiop = LOOKUP | FOLLOW; | |
310 | ndp->ni_segflg = UIO_USERSPACE; | |
311 | ndp->ni_dirp = uap->path; | |
312 | if (error = namei(ndp)) | |
313 | RETURN (error); | |
314 | mp = ndp->ni_vp->v_mount; | |
315 | vrele(ndp->ni_vp); | |
316 | RETURN (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg)); | |
317 | } | |
318 | ||
fc2aed1e KM |
319 | /* |
320 | * get filesystem statistics | |
321 | */ | |
6a6a1e5f KM |
322 | /* ARGSUSED */ |
323 | statfs(p, uap, retval) | |
324 | register struct proc *p; | |
325 | register struct args { | |
fc2aed1e KM |
326 | char *path; |
327 | struct statfs *buf; | |
6a6a1e5f KM |
328 | } *uap; |
329 | int *retval; | |
330 | { | |
3f705640 | 331 | register struct mount *mp; |
6a6a1e5f | 332 | register struct nameidata *ndp = &u.u_nd; |
62e35d50 | 333 | register struct statfs *sp; |
fc2aed1e | 334 | int error; |
3e78e260 | 335 | |
e114af99 | 336 | ndp->ni_nameiop = LOOKUP | FOLLOW; |
fc2aed1e KM |
337 | ndp->ni_segflg = UIO_USERSPACE; |
338 | ndp->ni_dirp = uap->path; | |
339 | if (error = namei(ndp)) | |
340 | RETURN (error); | |
e114af99 | 341 | mp = ndp->ni_vp->v_mount; |
54fb9dc2 | 342 | sp = &mp->mnt_stat; |
e114af99 | 343 | vrele(ndp->ni_vp); |
62e35d50 | 344 | if (error = VFS_STATFS(mp, sp)) |
e114af99 | 345 | RETURN (error); |
54fb9dc2 | 346 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 347 | RETURN (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
348 | } |
349 | ||
6a6a1e5f KM |
350 | /* |
351 | * get filesystem statistics | |
352 | */ | |
353 | /* ARGSUSED */ | |
354 | fstatfs(p, uap, retval) | |
355 | register struct proc *p; | |
356 | register struct args { | |
fc2aed1e KM |
357 | int fd; |
358 | struct statfs *buf; | |
6a6a1e5f KM |
359 | } *uap; |
360 | int *retval; | |
361 | { | |
fc2aed1e | 362 | struct file *fp; |
3f705640 | 363 | struct mount *mp; |
62e35d50 | 364 | register struct statfs *sp; |
fc2aed1e KM |
365 | int error; |
366 | ||
6a6a1e5f | 367 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e | 368 | RETURN (error); |
3f705640 | 369 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 370 | sp = &mp->mnt_stat; |
62e35d50 | 371 | if (error = VFS_STATFS(mp, sp)) |
fc2aed1e | 372 | RETURN (error); |
54fb9dc2 | 373 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 374 | RETURN (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
375 | } |
376 | ||
bfcdbfbf KM |
377 | /* |
378 | * get statistics on all filesystems | |
379 | */ | |
6a6a1e5f KM |
380 | getfsstat(p, uap, retval) |
381 | register struct proc *p; | |
382 | register struct args { | |
bfcdbfbf KM |
383 | struct statfs *buf; |
384 | long bufsize; | |
62e35d50 | 385 | int flags; |
6a6a1e5f KM |
386 | } *uap; |
387 | int *retval; | |
388 | { | |
bfcdbfbf | 389 | register struct mount *mp; |
62e35d50 | 390 | register struct statfs *sp; |
f62fad9a | 391 | caddr_t sfsp; |
bfcdbfbf KM |
392 | long count, maxcount, error; |
393 | ||
394 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 395 | sfsp = (caddr_t)uap->buf; |
bfcdbfbf KM |
396 | mp = rootfs; |
397 | count = 0; | |
398 | do { | |
54fb9dc2 KM |
399 | if (sfsp && count < maxcount && |
400 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
401 | sp = &mp->mnt_stat; | |
62e35d50 KM |
402 | /* |
403 | * If MNT_NOWAIT is specified, do not refresh the | |
404 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
405 | */ | |
406 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
407 | (uap->flags & MNT_WAIT)) && | |
408 | (error = VFS_STATFS(mp, sp))) { | |
54fb9dc2 | 409 | mp = mp->mnt_prev; |
fd8516be KM |
410 | continue; |
411 | } | |
54fb9dc2 | 412 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 413 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
f62fad9a | 414 | RETURN (error); |
62e35d50 | 415 | sfsp += sizeof(*sp); |
bfcdbfbf | 416 | } |
f62fad9a | 417 | count++; |
54fb9dc2 | 418 | mp = mp->mnt_prev; |
bfcdbfbf KM |
419 | } while (mp != rootfs); |
420 | if (sfsp && count > maxcount) | |
6a6a1e5f | 421 | *retval = maxcount; |
bfcdbfbf | 422 | else |
6a6a1e5f | 423 | *retval = count; |
bfcdbfbf KM |
424 | RETURN (0); |
425 | } | |
426 | ||
6995a2cb KM |
427 | /* |
428 | * Change current working directory to a given file descriptor. | |
429 | */ | |
6a6a1e5f KM |
430 | /* ARGSUSED */ |
431 | fchdir(p, uap, retval) | |
432 | register struct proc *p; | |
433 | struct args { | |
6995a2cb | 434 | int fd; |
6a6a1e5f KM |
435 | } *uap; |
436 | int *retval; | |
437 | { | |
438 | register struct nameidata *ndp = &u.u_nd; | |
6995a2cb KM |
439 | register struct vnode *vp; |
440 | struct file *fp; | |
441 | int error; | |
442 | ||
6a6a1e5f | 443 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
6995a2cb KM |
444 | RETURN (error); |
445 | vp = (struct vnode *)fp->f_data; | |
446 | VOP_LOCK(vp); | |
447 | if (vp->v_type != VDIR) | |
448 | error = ENOTDIR; | |
449 | else | |
6a6a1e5f | 450 | error = VOP_ACCESS(vp, VEXEC, ndp->ni_cred); |
6995a2cb | 451 | VOP_UNLOCK(vp); |
ab214c34 KM |
452 | if (error) |
453 | RETURN (error); | |
454 | VREF(vp); | |
6a6a1e5f KM |
455 | vrele(ndp->ni_cdir); |
456 | ndp->ni_cdir = vp; | |
ab214c34 | 457 | RETURN (0); |
6995a2cb KM |
458 | } |
459 | ||
4f083fd7 | 460 | /* |
fc2aed1e | 461 | * Change current working directory (``.''). |
4f083fd7 | 462 | */ |
6a6a1e5f KM |
463 | /* ARGSUSED */ |
464 | chdir(p, uap, retval) | |
465 | register struct proc *p; | |
466 | struct args { | |
3e78e260 | 467 | char *fname; |
6a6a1e5f KM |
468 | } *uap; |
469 | int *retval; | |
470 | { | |
471 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e | 472 | int error; |
3e78e260 | 473 | |
fc2aed1e | 474 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; |
715baff1 KM |
475 | ndp->ni_segflg = UIO_USERSPACE; |
476 | ndp->ni_dirp = uap->fname; | |
fc2aed1e KM |
477 | if (error = chdirec(ndp)) |
478 | RETURN (error); | |
6a6a1e5f KM |
479 | vrele(ndp->ni_cdir); |
480 | ndp->ni_cdir = ndp->ni_vp; | |
fc2aed1e KM |
481 | RETURN (0); |
482 | } | |
483 | ||
484 | /* | |
485 | * Change notion of root (``/'') directory. | |
486 | */ | |
6a6a1e5f KM |
487 | /* ARGSUSED */ |
488 | chroot(p, uap, retval) | |
489 | register struct proc *p; | |
490 | struct args { | |
fc2aed1e | 491 | char *fname; |
6a6a1e5f KM |
492 | } *uap; |
493 | int *retval; | |
494 | { | |
495 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
496 | int error; |
497 | ||
6a6a1e5f | 498 | if (error = suser(ndp->ni_cred, &u.u_acflag)) |
fc2aed1e KM |
499 | RETURN (error); |
500 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; | |
501 | ndp->ni_segflg = UIO_USERSPACE; | |
502 | ndp->ni_dirp = uap->fname; | |
503 | if (error = chdirec(ndp)) | |
504 | RETURN (error); | |
6a6a1e5f KM |
505 | if (ndp->ni_rdir != NULL) |
506 | vrele(ndp->ni_rdir); | |
507 | ndp->ni_rdir = ndp->ni_vp; | |
fc2aed1e KM |
508 | RETURN (0); |
509 | } | |
510 | ||
511 | /* | |
512 | * Common routine for chroot and chdir. | |
513 | */ | |
514 | chdirec(ndp) | |
515 | register struct nameidata *ndp; | |
516 | { | |
517 | struct vnode *vp; | |
518 | int error; | |
519 | ||
520 | if (error = namei(ndp)) | |
521 | return (error); | |
522 | vp = ndp->ni_vp; | |
523 | if (vp->v_type != VDIR) | |
524 | error = ENOTDIR; | |
525 | else | |
d7b2a16c | 526 | error = VOP_ACCESS(vp, VEXEC, ndp->ni_cred); |
fc2aed1e KM |
527 | VOP_UNLOCK(vp); |
528 | if (error) | |
529 | vrele(vp); | |
530 | return (error); | |
3e78e260 BJ |
531 | } |
532 | ||
533 | /* | |
534 | * Open system call. | |
6a6a1e5f KM |
535 | * Check permissions, allocate an open file structure, |
536 | * and call the device open routine if any. | |
3e78e260 | 537 | */ |
6a6a1e5f KM |
538 | open(p, uap, retval) |
539 | register struct proc *p; | |
540 | register struct args { | |
3e78e260 | 541 | char *fname; |
528f664c | 542 | int mode; |
88a7a62a | 543 | int crtmode; |
6a6a1e5f KM |
544 | } *uap; |
545 | int *retval; | |
3e78e260 | 546 | { |
6a6a1e5f | 547 | struct nameidata *ndp = &u.u_nd; |
3e78e260 | 548 | register struct file *fp; |
6a6a1e5f | 549 | int fmode, cmode; |
fc2aed1e KM |
550 | struct file *nfp; |
551 | int indx, error; | |
552 | extern struct fileops vnops; | |
553 | ||
554 | if (error = falloc(&nfp, &indx)) | |
6a6a1e5f | 555 | RETURN (error); |
fc2aed1e | 556 | fp = nfp; |
6a6a1e5f KM |
557 | fmode = uap->mode - FOPEN; |
558 | cmode = ((uap->crtmode &~ u.u_cmask) & 07777) &~ S_ISVTX; | |
559 | ndp->ni_segflg = UIO_USERSPACE; | |
560 | ndp->ni_dirp = uap->fname; | |
561 | u.u_r.u_rv.R_val1 = indx; /* XXX for fdopen() */ | |
562 | if (error = vn_open(ndp, fmode, cmode)) { | |
fc2aed1e KM |
563 | crfree(fp->f_cred); |
564 | fp->f_count--; | |
6a6a1e5f KM |
565 | if (error == EJUSTRETURN) { /* XXX from fdopen */ |
566 | *retval = indx; | |
567 | RETURN (0); | |
568 | } | |
b10521d6 KM |
569 | if (error == ERESTART) |
570 | error = EINTR; | |
6a6a1e5f KM |
571 | u.u_ofile[indx] = NULL; |
572 | RETURN (error); | |
528f664c | 573 | } |
fc2aed1e KM |
574 | fp->f_flag = fmode & FMASK; |
575 | fp->f_type = DTYPE_VNODE; | |
576 | fp->f_ops = &vnops; | |
577 | fp->f_data = (caddr_t)ndp->ni_vp; | |
6a6a1e5f KM |
578 | *retval = indx; |
579 | RETURN (0); | |
3e78e260 BJ |
580 | } |
581 | ||
582 | /* | |
6a6a1e5f | 583 | * Creat system call. |
3e78e260 | 584 | */ |
6a6a1e5f KM |
585 | creat(p, uap, retval) |
586 | struct proc *p; | |
587 | register struct args { | |
588 | char *fname; | |
589 | int fmode; | |
590 | } *uap; | |
591 | int *retval; | |
3e78e260 | 592 | { |
6a6a1e5f KM |
593 | struct args { |
594 | char *fname; | |
595 | int mode; | |
596 | int crtmode; | |
597 | } openuap; | |
598 | ||
599 | openuap.fname = uap->fname; | |
600 | openuap.crtmode = uap->fmode; | |
601 | openuap.mode = O_WRONLY | O_CREAT | O_TRUNC; | |
602 | RETURN (open(p, &openuap, retval)); | |
603 | } | |
604 | ||
605 | /* | |
606 | * Mknod system call | |
607 | */ | |
608 | /* ARGSUSED */ | |
609 | mknod(p, uap, retval) | |
610 | register struct proc *p; | |
611 | register struct args { | |
3e78e260 BJ |
612 | char *fname; |
613 | int fmode; | |
614 | int dev; | |
6a6a1e5f KM |
615 | } *uap; |
616 | int *retval; | |
617 | { | |
618 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
619 | register struct vnode *vp; |
620 | struct vattr vattr; | |
621 | int error; | |
3e78e260 | 622 | |
6a6a1e5f | 623 | if (error = suser(ndp->ni_cred, &u.u_acflag)) |
fc2aed1e KM |
624 | RETURN (error); |
625 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
715baff1 KM |
626 | ndp->ni_segflg = UIO_USERSPACE; |
627 | ndp->ni_dirp = uap->fname; | |
fc2aed1e KM |
628 | if (error = namei(ndp)) |
629 | RETURN (error); | |
630 | vp = ndp->ni_vp; | |
631 | if (vp != NULL) { | |
632 | error = EEXIST; | |
88a7a62a | 633 | goto out; |
3e78e260 | 634 | } |
3ee1461b | 635 | VATTR_NULL(&vattr); |
ab389897 | 636 | switch (uap->fmode & S_IFMT) { |
88a7a62a | 637 | |
ab389897 | 638 | case S_IFMT: /* used by badsect to flag bad sectors */ |
fc2aed1e KM |
639 | vattr.va_type = VBAD; |
640 | break; | |
ab389897 | 641 | case S_IFCHR: |
fc2aed1e KM |
642 | vattr.va_type = VCHR; |
643 | break; | |
ab389897 | 644 | case S_IFBLK: |
fc2aed1e KM |
645 | vattr.va_type = VBLK; |
646 | break; | |
647 | default: | |
648 | error = EINVAL; | |
649 | goto out; | |
3e78e260 | 650 | } |
6a6a1e5f | 651 | vattr.va_mode = (uap->fmode & 07777) &~ u.u_cmask; |
fc2aed1e | 652 | vattr.va_rdev = uap->dev; |
3e78e260 | 653 | out: |
fc2aed1e KM |
654 | if (error) |
655 | VOP_ABORTOP(ndp); | |
656 | else | |
657 | error = VOP_MKNOD(ndp, &vattr, ndp->ni_cred); | |
658 | RETURN (error); | |
3e78e260 BJ |
659 | } |
660 | ||
4751dd21 KM |
661 | /* |
662 | * Mkfifo system call | |
663 | */ | |
6a6a1e5f KM |
664 | /* ARGSUSED */ |
665 | mkfifo(p, uap, retval) | |
666 | register struct proc *p; | |
667 | register struct args { | |
4751dd21 KM |
668 | char *fname; |
669 | int fmode; | |
6a6a1e5f KM |
670 | } *uap; |
671 | int *retval; | |
672 | { | |
673 | register struct nameidata *ndp = &u.u_nd; | |
4751dd21 KM |
674 | struct vattr vattr; |
675 | int error; | |
676 | ||
677 | #ifndef FIFO | |
678 | RETURN (EOPNOTSUPP); | |
679 | #else | |
680 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
681 | ndp->ni_segflg = UIO_USERSPACE; | |
682 | ndp->ni_dirp = uap->fname; | |
683 | if (error = namei(ndp)) | |
684 | RETURN (error); | |
685 | if (ndp->ni_vp != NULL) { | |
686 | VOP_ABORTOP(ndp); | |
687 | RETURN (EEXIST); | |
688 | } else { | |
3ee1461b | 689 | VATTR_NULL(&vattr); |
4751dd21 | 690 | vattr.va_type = VFIFO; |
6a6a1e5f | 691 | vattr.va_mode = (uap->fmode & 07777) &~ u.u_cmask; |
4751dd21 KM |
692 | } |
693 | RETURN (VOP_MKNOD(ndp, &vattr, ndp->ni_cred)); | |
694 | #endif /* FIFO */ | |
695 | } | |
696 | ||
3e78e260 BJ |
697 | /* |
698 | * link system call | |
699 | */ | |
6a6a1e5f KM |
700 | /* ARGSUSED */ |
701 | link(p, uap, retval) | |
702 | register struct proc *p; | |
703 | register struct args { | |
3e78e260 BJ |
704 | char *target; |
705 | char *linkname; | |
6a6a1e5f KM |
706 | } *uap; |
707 | int *retval; | |
708 | { | |
709 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
710 | register struct vnode *vp, *xp; |
711 | int error; | |
3e78e260 | 712 | |
715baff1 KM |
713 | ndp->ni_nameiop = LOOKUP | FOLLOW; |
714 | ndp->ni_segflg = UIO_USERSPACE; | |
715 | ndp->ni_dirp = uap->target; | |
fc2aed1e KM |
716 | if (error = namei(ndp)) |
717 | RETURN (error); | |
718 | vp = ndp->ni_vp; | |
719 | if (vp->v_type == VDIR && | |
6a6a1e5f | 720 | (error = suser(ndp->ni_cred, &u.u_acflag))) |
fc2aed1e KM |
721 | goto out1; |
722 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
715baff1 | 723 | ndp->ni_dirp = (caddr_t)uap->linkname; |
fc2aed1e KM |
724 | if (error = namei(ndp)) |
725 | goto out1; | |
726 | xp = ndp->ni_vp; | |
3e78e260 | 727 | if (xp != NULL) { |
fc2aed1e | 728 | error = EEXIST; |
3e78e260 BJ |
729 | goto out; |
730 | } | |
fc2aed1e KM |
731 | xp = ndp->ni_dvp; |
732 | if (vp->v_mount != xp->v_mount) | |
733 | error = EXDEV; | |
3e78e260 | 734 | out: |
fc2aed1e KM |
735 | if (error) |
736 | VOP_ABORTOP(ndp); | |
737 | else | |
738 | error = VOP_LINK(vp, ndp); | |
739 | out1: | |
740 | vrele(vp); | |
741 | RETURN (error); | |
3e78e260 BJ |
742 | } |
743 | ||
744 | /* | |
745 | * symlink -- make a symbolic link | |
746 | */ | |
6a6a1e5f KM |
747 | /* ARGSUSED */ |
748 | symlink(p, uap, retval) | |
749 | register struct proc *p; | |
750 | register struct args { | |
3e78e260 BJ |
751 | char *target; |
752 | char *linkname; | |
6a6a1e5f KM |
753 | } *uap; |
754 | int *retval; | |
755 | { | |
756 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
757 | register struct vnode *vp; |
758 | struct vattr vattr; | |
759 | char *target; | |
760 | int error; | |
3e78e260 | 761 | |
715baff1 KM |
762 | ndp->ni_segflg = UIO_USERSPACE; |
763 | ndp->ni_dirp = uap->linkname; | |
fc2aed1e KM |
764 | MALLOC(target, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
765 | if (error = copyinstr(uap->target, target, MAXPATHLEN, (u_int *)0)) | |
766 | goto out1; | |
767 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
768 | if (error = namei(ndp)) | |
769 | goto out1; | |
770 | vp = ndp->ni_vp; | |
771 | if (vp) { | |
772 | error = EEXIST; | |
773 | goto out; | |
3e78e260 | 774 | } |
fc2aed1e | 775 | vp = ndp->ni_dvp; |
3ee1461b | 776 | VATTR_NULL(&vattr); |
6a6a1e5f | 777 | vattr.va_mode = 0777 &~ u.u_cmask; |
fc2aed1e KM |
778 | out: |
779 | if (error) | |
780 | VOP_ABORTOP(ndp); | |
781 | else | |
782 | error = VOP_SYMLINK(ndp, &vattr, target); | |
783 | out1: | |
784 | FREE(target, M_NAMEI); | |
785 | RETURN (error); | |
3e78e260 BJ |
786 | } |
787 | ||
788 | /* | |
789 | * Unlink system call. | |
790 | * Hard to avoid races here, especially | |
791 | * in unlinking directories. | |
792 | */ | |
6a6a1e5f KM |
793 | /* ARGSUSED */ |
794 | unlink(p, uap, retval) | |
795 | register struct proc *p; | |
796 | struct args { | |
3e78e260 | 797 | char *fname; |
6a6a1e5f KM |
798 | } *uap; |
799 | int *retval; | |
800 | { | |
801 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
802 | register struct vnode *vp; |
803 | int error; | |
3e78e260 | 804 | |
fc2aed1e | 805 | ndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
715baff1 KM |
806 | ndp->ni_segflg = UIO_USERSPACE; |
807 | ndp->ni_dirp = uap->fname; | |
fc2aed1e KM |
808 | if (error = namei(ndp)) |
809 | RETURN (error); | |
810 | vp = ndp->ni_vp; | |
811 | if (vp->v_type == VDIR && | |
6a6a1e5f | 812 | (error = suser(ndp->ni_cred, &u.u_acflag))) |
3e78e260 BJ |
813 | goto out; |
814 | /* | |
815 | * Don't unlink a mounted file. | |
816 | */ | |
fc2aed1e KM |
817 | if (vp->v_flag & VROOT) { |
818 | error = EBUSY; | |
3e78e260 BJ |
819 | goto out; |
820 | } | |
fc2aed1e KM |
821 | if (vp->v_flag & VTEXT) |
822 | xrele(vp); /* try once to free text */ | |
3e78e260 | 823 | out: |
fc2aed1e KM |
824 | if (error) |
825 | VOP_ABORTOP(ndp); | |
8eee8525 | 826 | else |
fc2aed1e KM |
827 | error = VOP_REMOVE(ndp); |
828 | RETURN (error); | |
3e78e260 BJ |
829 | } |
830 | ||
831 | /* | |
832 | * Seek system call | |
833 | */ | |
6a6a1e5f KM |
834 | lseek(p, uap, retval) |
835 | register struct proc *p; | |
836 | register struct args { | |
fc2aed1e | 837 | int fdes; |
3e78e260 BJ |
838 | off_t off; |
839 | int sbase; | |
6a6a1e5f KM |
840 | } *uap; |
841 | off_t *retval; | |
842 | { | |
843 | struct ucred *cred = u.u_nd.ni_cred; | |
844 | register struct file *fp; | |
fc2aed1e KM |
845 | struct vattr vattr; |
846 | int error; | |
847 | ||
848 | if ((unsigned)uap->fdes >= NOFILE || | |
6a6a1e5f | 849 | (fp = u.u_ofile[uap->fdes]) == NULL) |
fc2aed1e KM |
850 | RETURN (EBADF); |
851 | if (fp->f_type != DTYPE_VNODE) | |
852 | RETURN (ESPIPE); | |
b4d1aee9 SL |
853 | switch (uap->sbase) { |
854 | ||
855 | case L_INCR: | |
856 | fp->f_offset += uap->off; | |
857 | break; | |
858 | ||
859 | case L_XTND: | |
fc2aed1e | 860 | if (error = VOP_GETATTR((struct vnode *)fp->f_data, |
6a6a1e5f | 861 | &vattr, cred)) |
fc2aed1e KM |
862 | RETURN (error); |
863 | fp->f_offset = uap->off + vattr.va_size; | |
b4d1aee9 SL |
864 | break; |
865 | ||
866 | case L_SET: | |
867 | fp->f_offset = uap->off; | |
868 | break; | |
869 | ||
870 | default: | |
fc2aed1e | 871 | RETURN (EINVAL); |
b4d1aee9 | 872 | } |
6a6a1e5f | 873 | *retval = fp->f_offset; |
fc2aed1e | 874 | RETURN (0); |
3e78e260 BJ |
875 | } |
876 | ||
877 | /* | |
878 | * Access system call | |
879 | */ | |
6a6a1e5f KM |
880 | /* ARGSUSED */ |
881 | saccess(p, uap, retval) | |
882 | register struct proc *p; | |
883 | register struct args { | |
3e78e260 BJ |
884 | char *fname; |
885 | int fmode; | |
6a6a1e5f KM |
886 | } *uap; |
887 | int *retval; | |
888 | { | |
889 | register struct nameidata *ndp = &u.u_nd; | |
890 | register struct ucred *cred = ndp->ni_cred; | |
fc2aed1e KM |
891 | register struct vnode *vp; |
892 | int error, mode, svuid, svgid; | |
3e78e260 | 893 | |
6a6a1e5f KM |
894 | svuid = cred->cr_uid; |
895 | svgid = cred->cr_groups[0]; | |
896 | cred->cr_uid = p->p_ruid; | |
897 | cred->cr_groups[0] = p->p_rgid; | |
fc2aed1e | 898 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; |
715baff1 KM |
899 | ndp->ni_segflg = UIO_USERSPACE; |
900 | ndp->ni_dirp = uap->fname; | |
fc2aed1e KM |
901 | if (error = namei(ndp)) |
902 | goto out1; | |
903 | vp = ndp->ni_vp; | |
904 | /* | |
905 | * fmode == 0 means only check for exist | |
906 | */ | |
907 | if (uap->fmode) { | |
908 | mode = 0; | |
909 | if (uap->fmode & R_OK) | |
910 | mode |= VREAD; | |
911 | if (uap->fmode & W_OK) | |
912 | mode |= VWRITE; | |
913 | if (uap->fmode & X_OK) | |
914 | mode |= VEXEC; | |
9230ead4 | 915 | if ((mode & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) |
d7b2a16c | 916 | error = VOP_ACCESS(vp, mode, ndp->ni_cred); |
3e78e260 | 917 | } |
fc2aed1e KM |
918 | vput(vp); |
919 | out1: | |
6a6a1e5f KM |
920 | cred->cr_uid = svuid; |
921 | cred->cr_groups[0] = svgid; | |
fc2aed1e | 922 | RETURN (error); |
3e78e260 | 923 | } |
d67a03eb | 924 | |
d67a03eb | 925 | /* |
6459ebe0 | 926 | * Stat system call. This version follows links. |
d67a03eb | 927 | */ |
6a6a1e5f KM |
928 | /* ARGSUSED */ |
929 | stat(p, uap, retval) | |
930 | register struct proc *p; | |
931 | register struct args { | |
932 | char *fname; | |
933 | struct stat *ub; | |
934 | } *uap; | |
935 | int *retval; | |
d67a03eb | 936 | { |
6a6a1e5f KM |
937 | register struct nameidata *ndp = &u.u_nd; |
938 | struct stat sb; | |
939 | int error; | |
d67a03eb | 940 | |
6a6a1e5f KM |
941 | ndp->ni_nameiop = LOOKUP | LOCKLEAF | FOLLOW; |
942 | ndp->ni_segflg = UIO_USERSPACE; | |
943 | ndp->ni_dirp = uap->fname; | |
944 | if (error = namei(ndp)) | |
945 | RETURN (error); | |
946 | error = vn_stat(ndp->ni_vp, &sb); | |
947 | vput(ndp->ni_vp); | |
948 | if (error) | |
949 | RETURN (error); | |
950 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); | |
951 | RETURN (error); | |
d67a03eb BJ |
952 | } |
953 | ||
5485e062 | 954 | /* |
6459ebe0 | 955 | * Lstat system call. This version does not follow links. |
5485e062 | 956 | */ |
6a6a1e5f KM |
957 | /* ARGSUSED */ |
958 | lstat(p, uap, retval) | |
959 | register struct proc *p; | |
960 | register struct args { | |
5485e062 | 961 | char *fname; |
88a7a62a | 962 | struct stat *ub; |
6a6a1e5f KM |
963 | } *uap; |
964 | int *retval; | |
965 | { | |
966 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
967 | struct stat sb; |
968 | int error; | |
5485e062 | 969 | |
6a6a1e5f | 970 | ndp->ni_nameiop = LOOKUP | LOCKLEAF | NOFOLLOW; |
715baff1 KM |
971 | ndp->ni_segflg = UIO_USERSPACE; |
972 | ndp->ni_dirp = uap->fname; | |
fc2aed1e KM |
973 | if (error = namei(ndp)) |
974 | RETURN (error); | |
975 | error = vn_stat(ndp->ni_vp, &sb); | |
976 | vput(ndp->ni_vp); | |
977 | if (error) | |
978 | RETURN (error); | |
979 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); | |
980 | RETURN (error); | |
d67a03eb BJ |
981 | } |
982 | ||
983 | /* | |
5485e062 BJ |
984 | * Return target name of a symbolic link |
985 | */ | |
6a6a1e5f KM |
986 | /* ARGSUSED */ |
987 | readlink(p, uap, retval) | |
988 | register struct proc *p; | |
989 | register struct args { | |
5485e062 BJ |
990 | char *name; |
991 | char *buf; | |
992 | int count; | |
6a6a1e5f KM |
993 | } *uap; |
994 | int *retval; | |
995 | { | |
996 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
997 | register struct vnode *vp; |
998 | struct iovec aiov; | |
999 | struct uio auio; | |
1000 | int error; | |
5485e062 | 1001 | |
fc2aed1e | 1002 | ndp->ni_nameiop = LOOKUP | LOCKLEAF; |
715baff1 KM |
1003 | ndp->ni_segflg = UIO_USERSPACE; |
1004 | ndp->ni_dirp = uap->name; | |
fc2aed1e KM |
1005 | if (error = namei(ndp)) |
1006 | RETURN (error); | |
1007 | vp = ndp->ni_vp; | |
1008 | if (vp->v_type != VLNK) { | |
1009 | error = EINVAL; | |
5485e062 BJ |
1010 | goto out; |
1011 | } | |
fc2aed1e KM |
1012 | aiov.iov_base = uap->buf; |
1013 | aiov.iov_len = uap->count; | |
1014 | auio.uio_iov = &aiov; | |
1015 | auio.uio_iovcnt = 1; | |
1016 | auio.uio_offset = 0; | |
1017 | auio.uio_rw = UIO_READ; | |
1018 | auio.uio_segflg = UIO_USERSPACE; | |
1019 | auio.uio_resid = uap->count; | |
1020 | error = VOP_READLINK(vp, &auio, ndp->ni_cred); | |
5485e062 | 1021 | out: |
fc2aed1e | 1022 | vput(vp); |
6a6a1e5f | 1023 | *retval = uap->count - auio.uio_resid; |
fc2aed1e | 1024 | RETURN (error); |
5485e062 BJ |
1025 | } |
1026 | ||
6995a2cb KM |
1027 | /* |
1028 | * Change flags of a file given path name. | |
1029 | */ | |
6a6a1e5f KM |
1030 | /* ARGSUSED */ |
1031 | chflags(p, uap, retval) | |
1032 | register struct proc *p; | |
1033 | register struct args { | |
6995a2cb KM |
1034 | char *fname; |
1035 | int flags; | |
6a6a1e5f KM |
1036 | } *uap; |
1037 | int *retval; | |
1038 | { | |
1039 | register struct nameidata *ndp = &u.u_nd; | |
6995a2cb KM |
1040 | register struct vnode *vp; |
1041 | struct vattr vattr; | |
1042 | int error; | |
1043 | ||
1044 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; | |
1045 | ndp->ni_segflg = UIO_USERSPACE; | |
1046 | ndp->ni_dirp = uap->fname; | |
3ee1461b | 1047 | VATTR_NULL(&vattr); |
6995a2cb KM |
1048 | vattr.va_flags = uap->flags; |
1049 | if (error = namei(ndp)) | |
1050 | RETURN (error); | |
1051 | vp = ndp->ni_vp; | |
54fb9dc2 | 1052 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1053 | error = EROFS; |
1054 | goto out; | |
1055 | } | |
1056 | error = VOP_SETATTR(vp, &vattr, ndp->ni_cred); | |
1057 | out: | |
1058 | vput(vp); | |
1059 | RETURN (error); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Change flags of a file given a file descriptor. | |
1064 | */ | |
6a6a1e5f KM |
1065 | /* ARGSUSED */ |
1066 | fchflags(p, uap, retval) | |
1067 | register struct proc *p; | |
1068 | register struct args { | |
6995a2cb KM |
1069 | int fd; |
1070 | int flags; | |
6a6a1e5f KM |
1071 | } *uap; |
1072 | int *retval; | |
1073 | { | |
6995a2cb KM |
1074 | struct vattr vattr; |
1075 | struct vnode *vp; | |
1076 | struct file *fp; | |
1077 | int error; | |
1078 | ||
6a6a1e5f | 1079 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
6995a2cb | 1080 | RETURN (error); |
3ee1461b | 1081 | VATTR_NULL(&vattr); |
6995a2cb KM |
1082 | vattr.va_flags = uap->flags; |
1083 | vp = (struct vnode *)fp->f_data; | |
1084 | VOP_LOCK(vp); | |
54fb9dc2 | 1085 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1086 | error = EROFS; |
1087 | goto out; | |
1088 | } | |
1089 | error = VOP_SETATTR(vp, &vattr, fp->f_cred); | |
1090 | out: | |
1091 | VOP_UNLOCK(vp); | |
1092 | RETURN (error); | |
1093 | } | |
1094 | ||
4f083fd7 SL |
1095 | /* |
1096 | * Change mode of a file given path name. | |
1097 | */ | |
6a6a1e5f KM |
1098 | /* ARGSUSED */ |
1099 | chmod(p, uap, retval) | |
1100 | register struct proc *p; | |
1101 | register struct args { | |
3e78e260 BJ |
1102 | char *fname; |
1103 | int fmode; | |
6a6a1e5f KM |
1104 | } *uap; |
1105 | int *retval; | |
1106 | { | |
1107 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
1108 | register struct vnode *vp; |
1109 | struct vattr vattr; | |
1110 | int error; | |
5485e062 | 1111 | |
fc2aed1e KM |
1112 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; |
1113 | ndp->ni_segflg = UIO_USERSPACE; | |
1114 | ndp->ni_dirp = uap->fname; | |
3ee1461b | 1115 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1116 | vattr.va_mode = uap->fmode & 07777; |
1117 | if (error = namei(ndp)) | |
1118 | RETURN (error); | |
1119 | vp = ndp->ni_vp; | |
54fb9dc2 | 1120 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1121 | error = EROFS; |
1122 | goto out; | |
1123 | } | |
1124 | error = VOP_SETATTR(vp, &vattr, ndp->ni_cred); | |
1125 | out: | |
1126 | vput(vp); | |
1127 | RETURN (error); | |
528f664c | 1128 | } |
f94ceb3b | 1129 | |
4f083fd7 SL |
1130 | /* |
1131 | * Change mode of a file given a file descriptor. | |
1132 | */ | |
6a6a1e5f KM |
1133 | /* ARGSUSED */ |
1134 | fchmod(p, uap, retval) | |
1135 | register struct proc *p; | |
1136 | register struct args { | |
528f664c SL |
1137 | int fd; |
1138 | int fmode; | |
6a6a1e5f KM |
1139 | } *uap; |
1140 | int *retval; | |
1141 | { | |
fc2aed1e KM |
1142 | struct vattr vattr; |
1143 | struct vnode *vp; | |
1144 | struct file *fp; | |
1145 | int error; | |
1146 | ||
6a6a1e5f | 1147 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e | 1148 | RETURN (error); |
3ee1461b | 1149 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1150 | vattr.va_mode = uap->fmode & 07777; |
1151 | vp = (struct vnode *)fp->f_data; | |
1152 | VOP_LOCK(vp); | |
54fb9dc2 | 1153 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1154 | error = EROFS; |
1155 | goto out; | |
f94ceb3b | 1156 | } |
fc2aed1e KM |
1157 | error = VOP_SETATTR(vp, &vattr, fp->f_cred); |
1158 | out: | |
1159 | VOP_UNLOCK(vp); | |
1160 | RETURN (error); | |
5485e062 BJ |
1161 | } |
1162 | ||
4f083fd7 SL |
1163 | /* |
1164 | * Set ownership given a path name. | |
1165 | */ | |
6a6a1e5f KM |
1166 | /* ARGSUSED */ |
1167 | chown(p, uap, retval) | |
1168 | register struct proc *p; | |
1169 | register struct args { | |
3e78e260 BJ |
1170 | char *fname; |
1171 | int uid; | |
1172 | int gid; | |
6a6a1e5f KM |
1173 | } *uap; |
1174 | int *retval; | |
1175 | { | |
1176 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
1177 | register struct vnode *vp; |
1178 | struct vattr vattr; | |
1179 | int error; | |
d67a03eb | 1180 | |
fc2aed1e | 1181 | ndp->ni_nameiop = LOOKUP | NOFOLLOW | LOCKLEAF; |
18b0bce6 KB |
1182 | ndp->ni_segflg = UIO_USERSPACE; |
1183 | ndp->ni_dirp = uap->fname; | |
3ee1461b | 1184 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1185 | vattr.va_uid = uap->uid; |
1186 | vattr.va_gid = uap->gid; | |
1187 | if (error = namei(ndp)) | |
1188 | RETURN (error); | |
1189 | vp = ndp->ni_vp; | |
54fb9dc2 | 1190 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1191 | error = EROFS; |
1192 | goto out; | |
1193 | } | |
1194 | error = VOP_SETATTR(vp, &vattr, ndp->ni_cred); | |
1195 | out: | |
1196 | vput(vp); | |
1197 | RETURN (error); | |
528f664c | 1198 | } |
f94ceb3b | 1199 | |
4f083fd7 SL |
1200 | /* |
1201 | * Set ownership given a file descriptor. | |
1202 | */ | |
6a6a1e5f KM |
1203 | /* ARGSUSED */ |
1204 | fchown(p, uap, retval) | |
1205 | register struct proc *p; | |
1206 | register struct args { | |
528f664c SL |
1207 | int fd; |
1208 | int uid; | |
1209 | int gid; | |
6a6a1e5f KM |
1210 | } *uap; |
1211 | int *retval; | |
1212 | { | |
fc2aed1e KM |
1213 | struct vattr vattr; |
1214 | struct vnode *vp; | |
1215 | struct file *fp; | |
1216 | int error; | |
1217 | ||
6a6a1e5f | 1218 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e | 1219 | RETURN (error); |
3ee1461b | 1220 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1221 | vattr.va_uid = uap->uid; |
1222 | vattr.va_gid = uap->gid; | |
1223 | vp = (struct vnode *)fp->f_data; | |
1224 | VOP_LOCK(vp); | |
54fb9dc2 | 1225 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1226 | error = EROFS; |
1227 | goto out; | |
1228 | } | |
1229 | error = VOP_SETATTR(vp, &vattr, fp->f_cred); | |
1230 | out: | |
1231 | VOP_UNLOCK(vp); | |
1232 | RETURN (error); | |
d67a03eb BJ |
1233 | } |
1234 | ||
6a6a1e5f KM |
1235 | /* |
1236 | * Set the access and modification times of a file. | |
1237 | */ | |
1238 | /* ARGSUSED */ | |
1239 | utimes(p, uap, retval) | |
1240 | register struct proc *p; | |
1241 | register struct args { | |
bb1b75f4 SL |
1242 | char *fname; |
1243 | struct timeval *tptr; | |
6a6a1e5f KM |
1244 | } *uap; |
1245 | int *retval; | |
1246 | { | |
1247 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e | 1248 | register struct vnode *vp; |
bb1b75f4 | 1249 | struct timeval tv[2]; |
fc2aed1e KM |
1250 | struct vattr vattr; |
1251 | int error; | |
bb1b75f4 | 1252 | |
fc2aed1e KM |
1253 | if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1254 | RETURN (error); | |
1255 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; | |
1256 | ndp->ni_segflg = UIO_USERSPACE; | |
1257 | ndp->ni_dirp = uap->fname; | |
3ee1461b | 1258 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1259 | vattr.va_atime = tv[0]; |
1260 | vattr.va_mtime = tv[1]; | |
1261 | if (error = namei(ndp)) | |
1262 | RETURN (error); | |
1263 | vp = ndp->ni_vp; | |
54fb9dc2 | 1264 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1265 | error = EROFS; |
1266 | goto out; | |
bb1b75f4 | 1267 | } |
fc2aed1e KM |
1268 | error = VOP_SETATTR(vp, &vattr, ndp->ni_cred); |
1269 | out: | |
1270 | vput(vp); | |
1271 | RETURN (error); | |
d67a03eb | 1272 | } |
64d3a787 | 1273 | |
4f083fd7 SL |
1274 | /* |
1275 | * Truncate a file given its path name. | |
1276 | */ | |
6a6a1e5f KM |
1277 | /* ARGSUSED */ |
1278 | truncate(p, uap, retval) | |
1279 | register struct proc *p; | |
1280 | register struct args { | |
528f664c | 1281 | char *fname; |
c979c6ce | 1282 | off_t length; |
6a6a1e5f KM |
1283 | } *uap; |
1284 | int *retval; | |
1285 | { | |
1286 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
1287 | register struct vnode *vp; |
1288 | struct vattr vattr; | |
1289 | int error; | |
528f664c | 1290 | |
fc2aed1e | 1291 | ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF; |
715baff1 KM |
1292 | ndp->ni_segflg = UIO_USERSPACE; |
1293 | ndp->ni_dirp = uap->fname; | |
3ee1461b | 1294 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1295 | vattr.va_size = uap->length; |
1296 | if (error = namei(ndp)) | |
1297 | RETURN (error); | |
1298 | vp = ndp->ni_vp; | |
1299 | if (vp->v_type == VDIR) { | |
1300 | error = EISDIR; | |
1301 | goto out; | |
528f664c | 1302 | } |
d7b2a16c KM |
1303 | if ((error = vn_writechk(vp)) || |
1304 | (error = VOP_ACCESS(vp, VWRITE, ndp->ni_cred))) | |
fc2aed1e KM |
1305 | goto out; |
1306 | error = VOP_SETATTR(vp, &vattr, ndp->ni_cred); | |
1307 | out: | |
1308 | vput(vp); | |
1309 | RETURN (error); | |
528f664c SL |
1310 | } |
1311 | ||
4f083fd7 SL |
1312 | /* |
1313 | * Truncate a file given a file descriptor. | |
1314 | */ | |
6a6a1e5f KM |
1315 | /* ARGSUSED */ |
1316 | ftruncate(p, uap, retval) | |
1317 | register struct proc *p; | |
1318 | register struct args { | |
528f664c | 1319 | int fd; |
c979c6ce | 1320 | off_t length; |
6a6a1e5f KM |
1321 | } *uap; |
1322 | int *retval; | |
1323 | { | |
fc2aed1e KM |
1324 | struct vattr vattr; |
1325 | struct vnode *vp; | |
528f664c | 1326 | struct file *fp; |
fc2aed1e KM |
1327 | int error; |
1328 | ||
6a6a1e5f | 1329 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e KM |
1330 | RETURN (error); |
1331 | if ((fp->f_flag & FWRITE) == 0) | |
1332 | RETURN (EINVAL); | |
3ee1461b | 1333 | VATTR_NULL(&vattr); |
fc2aed1e KM |
1334 | vattr.va_size = uap->length; |
1335 | vp = (struct vnode *)fp->f_data; | |
1336 | VOP_LOCK(vp); | |
1337 | if (vp->v_type == VDIR) { | |
1338 | error = EISDIR; | |
1339 | goto out; | |
528f664c | 1340 | } |
d7b2a16c | 1341 | if (error = vn_writechk(vp)) |
fc2aed1e KM |
1342 | goto out; |
1343 | error = VOP_SETATTR(vp, &vattr, fp->f_cred); | |
1344 | out: | |
1345 | VOP_UNLOCK(vp); | |
1346 | RETURN (error); | |
4f083fd7 SL |
1347 | } |
1348 | ||
1349 | /* | |
1350 | * Synch an open file. | |
1351 | */ | |
6a6a1e5f KM |
1352 | /* ARGSUSED */ |
1353 | fsync(p, uap, retval) | |
1354 | register struct proc *p; | |
1355 | struct args { | |
4f083fd7 | 1356 | int fd; |
6a6a1e5f KM |
1357 | } *uap; |
1358 | int *retval; | |
1359 | { | |
e79467ea | 1360 | register struct vnode *vp; |
4f083fd7 | 1361 | struct file *fp; |
fc2aed1e | 1362 | int error; |
4f083fd7 | 1363 | |
6a6a1e5f | 1364 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e | 1365 | RETURN (error); |
e79467ea KM |
1366 | vp = (struct vnode *)fp->f_data; |
1367 | VOP_LOCK(vp); | |
1368 | error = VOP_FSYNC(vp, fp->f_flag, fp->f_cred, MNT_WAIT); | |
1369 | VOP_UNLOCK(vp); | |
fc2aed1e | 1370 | RETURN (error); |
528f664c SL |
1371 | } |
1372 | ||
4f083fd7 SL |
1373 | /* |
1374 | * Rename system call. | |
4f083fd7 SL |
1375 | * |
1376 | * Source and destination must either both be directories, or both | |
1377 | * not be directories. If target is a directory, it must be empty. | |
1378 | */ | |
6a6a1e5f KM |
1379 | /* ARGSUSED */ |
1380 | rename(p, uap, retval) | |
1381 | register struct proc *p; | |
1382 | register struct args { | |
528f664c SL |
1383 | char *from; |
1384 | char *to; | |
6a6a1e5f KM |
1385 | } *uap; |
1386 | int *retval; | |
1387 | { | |
fc2aed1e | 1388 | register struct vnode *tvp, *fvp, *tdvp; |
6a6a1e5f | 1389 | register struct nameidata *ndp = &u.u_nd; |
fc2aed1e KM |
1390 | struct nameidata tond; |
1391 | int error; | |
4f083fd7 | 1392 | |
fc2aed1e | 1393 | ndp->ni_nameiop = DELETE | WANTPARENT; |
715baff1 KM |
1394 | ndp->ni_segflg = UIO_USERSPACE; |
1395 | ndp->ni_dirp = uap->from; | |
fc2aed1e KM |
1396 | if (error = namei(ndp)) |
1397 | RETURN (error); | |
1398 | fvp = ndp->ni_vp; | |
41eb2f3d | 1399 | nddup(ndp, &tond); |
fc2aed1e KM |
1400 | tond.ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
1401 | tond.ni_segflg = UIO_USERSPACE; | |
1402 | tond.ni_dirp = uap->to; | |
fc2aed1e KM |
1403 | error = namei(&tond); |
1404 | tdvp = tond.ni_dvp; | |
1405 | tvp = tond.ni_vp; | |
1406 | if (tvp != NULL) { | |
1407 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1408 | error = ENOTDIR; |
fc2aed1e KM |
1409 | goto out; |
1410 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1411 | error = EISDIR; |
fc2aed1e | 1412 | goto out; |
a5390dce | 1413 | } |
4f083fd7 | 1414 | } |
fc2aed1e KM |
1415 | if (error) { |
1416 | VOP_ABORTOP(ndp); | |
1417 | goto out1; | |
4f083fd7 | 1418 | } |
fc2aed1e KM |
1419 | if (fvp->v_mount != tdvp->v_mount) { |
1420 | error = EXDEV; | |
1421 | goto out; | |
64d3a787 | 1422 | } |
fe562f32 | 1423 | if (fvp == tdvp) |
fc2aed1e | 1424 | error = EINVAL; |
fe562f32 KM |
1425 | /* |
1426 | * If source is the same as the destination, | |
1427 | * then there is nothing to do. | |
1428 | */ | |
1429 | if (fvp == tvp) | |
1430 | error = -1; | |
fc2aed1e KM |
1431 | out: |
1432 | if (error) { | |
1433 | VOP_ABORTOP(&tond); | |
1434 | VOP_ABORTOP(ndp); | |
1435 | } else { | |
1436 | error = VOP_RENAME(ndp, &tond); | |
64d3a787 | 1437 | } |
fc2aed1e | 1438 | out1: |
41eb2f3d | 1439 | ndrele(&tond); |
fe562f32 KM |
1440 | if (error == -1) |
1441 | RETURN (0); | |
fc2aed1e | 1442 | RETURN (error); |
64d3a787 | 1443 | } |
88a7a62a | 1444 | |
88a7a62a SL |
1445 | /* |
1446 | * Mkdir system call | |
1447 | */ | |
6a6a1e5f KM |
1448 | /* ARGSUSED */ |
1449 | mkdir(p, uap, retval) | |
1450 | register struct proc *p; | |
1451 | register struct args { | |
88a7a62a SL |
1452 | char *name; |
1453 | int dmode; | |
6a6a1e5f KM |
1454 | } *uap; |
1455 | int *retval; | |
1456 | { | |
1457 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
1458 | register struct vnode *vp; |
1459 | struct vattr vattr; | |
1460 | int error; | |
88a7a62a | 1461 | |
fc2aed1e | 1462 | ndp->ni_nameiop = CREATE | LOCKPARENT; |
715baff1 KM |
1463 | ndp->ni_segflg = UIO_USERSPACE; |
1464 | ndp->ni_dirp = uap->name; | |
fc2aed1e KM |
1465 | if (error = namei(ndp)) |
1466 | RETURN (error); | |
1467 | vp = ndp->ni_vp; | |
1468 | if (vp != NULL) { | |
1469 | VOP_ABORTOP(ndp); | |
1470 | RETURN (EEXIST); | |
88a7a62a | 1471 | } |
3ee1461b | 1472 | VATTR_NULL(&vattr); |
fc2aed1e | 1473 | vattr.va_type = VDIR; |
6a6a1e5f | 1474 | vattr.va_mode = (uap->dmode & 0777) &~ u.u_cmask; |
fc2aed1e | 1475 | error = VOP_MKDIR(ndp, &vattr); |
5dfd04f0 KM |
1476 | if (!error) |
1477 | vput(ndp->ni_vp); | |
fc2aed1e | 1478 | RETURN (error); |
88a7a62a SL |
1479 | } |
1480 | ||
1481 | /* | |
1482 | * Rmdir system call. | |
1483 | */ | |
6a6a1e5f KM |
1484 | /* ARGSUSED */ |
1485 | rmdir(p, uap, retval) | |
1486 | register struct proc *p; | |
1487 | struct args { | |
88a7a62a | 1488 | char *name; |
6a6a1e5f KM |
1489 | } *uap; |
1490 | int *retval; | |
1491 | { | |
1492 | register struct nameidata *ndp = &u.u_nd; | |
fc2aed1e KM |
1493 | register struct vnode *vp; |
1494 | int error; | |
88a7a62a | 1495 | |
fc2aed1e | 1496 | ndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
715baff1 KM |
1497 | ndp->ni_segflg = UIO_USERSPACE; |
1498 | ndp->ni_dirp = uap->name; | |
fc2aed1e KM |
1499 | if (error = namei(ndp)) |
1500 | RETURN (error); | |
1501 | vp = ndp->ni_vp; | |
1502 | if (vp->v_type != VDIR) { | |
1503 | error = ENOTDIR; | |
88a7a62a SL |
1504 | goto out; |
1505 | } | |
1506 | /* | |
fc2aed1e | 1507 | * No rmdir "." please. |
88a7a62a | 1508 | */ |
fc2aed1e KM |
1509 | if (ndp->ni_dvp == vp) { |
1510 | error = EINVAL; | |
88a7a62a SL |
1511 | goto out; |
1512 | } | |
1513 | /* | |
fc2aed1e | 1514 | * Don't unlink a mounted file. |
88a7a62a | 1515 | */ |
fc2aed1e KM |
1516 | if (vp->v_flag & VROOT) |
1517 | error = EBUSY; | |
88a7a62a | 1518 | out: |
fc2aed1e KM |
1519 | if (error) |
1520 | VOP_ABORTOP(ndp); | |
1521 | else | |
1522 | error = VOP_RMDIR(ndp); | |
1523 | RETURN (error); | |
88a7a62a SL |
1524 | } |
1525 | ||
fc2aed1e KM |
1526 | /* |
1527 | * Read a block of directory entries in a file system independent format | |
1528 | */ | |
6a6a1e5f KM |
1529 | getdirentries(p, uap, retval) |
1530 | register struct proc *p; | |
1531 | register struct args { | |
fc2aed1e KM |
1532 | int fd; |
1533 | char *buf; | |
1534 | unsigned count; | |
1535 | long *basep; | |
6a6a1e5f KM |
1536 | } *uap; |
1537 | int *retval; | |
1538 | { | |
e79467ea | 1539 | register struct vnode *vp; |
8462a185 | 1540 | struct file *fp; |
fc2aed1e KM |
1541 | struct uio auio; |
1542 | struct iovec aiov; | |
58030ad2 | 1543 | off_t off; |
c242ace6 | 1544 | int error, eofflag; |
fc2aed1e | 1545 | |
6a6a1e5f | 1546 | if (error = getvnode(u.u_ofile, uap->fd, &fp)) |
fc2aed1e KM |
1547 | RETURN (error); |
1548 | if ((fp->f_flag & FREAD) == 0) | |
1549 | RETURN (EBADF); | |
e79467ea KM |
1550 | vp = (struct vnode *)fp->f_data; |
1551 | if (vp->v_type != VDIR) | |
1552 | RETURN (EINVAL); | |
fc2aed1e KM |
1553 | aiov.iov_base = uap->buf; |
1554 | aiov.iov_len = uap->count; | |
1555 | auio.uio_iov = &aiov; | |
1556 | auio.uio_iovcnt = 1; | |
1557 | auio.uio_rw = UIO_READ; | |
1558 | auio.uio_segflg = UIO_USERSPACE; | |
1559 | auio.uio_resid = uap->count; | |
e79467ea KM |
1560 | VOP_LOCK(vp); |
1561 | auio.uio_offset = off = fp->f_offset; | |
c242ace6 | 1562 | error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag); |
e79467ea KM |
1563 | fp->f_offset = auio.uio_offset; |
1564 | VOP_UNLOCK(vp); | |
1565 | if (error) | |
fc2aed1e | 1566 | RETURN (error); |
e79467ea | 1567 | error = copyout((caddr_t)&off, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1568 | *retval = uap->count - auio.uio_resid; |
fc2aed1e | 1569 | RETURN (error); |
88a7a62a SL |
1570 | } |
1571 | ||
1572 | /* | |
1573 | * mode mask for creation of files | |
1574 | */ | |
6a6a1e5f KM |
1575 | mode_t |
1576 | umask(p, uap, retval) | |
1577 | register struct proc *p; | |
1578 | struct args { | |
88a7a62a | 1579 | int mask; |
6a6a1e5f KM |
1580 | } *uap; |
1581 | int *retval; | |
1582 | { | |
88a7a62a | 1583 | |
6a6a1e5f KM |
1584 | *retval = u.u_cmask; |
1585 | u.u_cmask = uap->mask & 07777; | |
fc2aed1e KM |
1586 | RETURN (0); |
1587 | } | |
1588 | ||
b0a98f13 MT |
1589 | /* |
1590 | * Void all references to file by ripping underlying filesystem | |
1591 | * away from vnode. | |
1592 | */ | |
6a6a1e5f KM |
1593 | /* ARGSUSED */ |
1594 | revoke(p, uap, retval) | |
1595 | register struct proc *p; | |
1596 | register struct args { | |
b0a98f13 | 1597 | char *fname; |
a99a44da | 1598 | int flags; |
6a6a1e5f KM |
1599 | } *uap; |
1600 | int *retval; | |
1601 | { | |
1602 | register struct nameidata *ndp = &u.u_nd; | |
b0a98f13 MT |
1603 | register struct vnode *vp; |
1604 | struct vattr vattr; | |
1605 | int error; | |
1606 | ||
1607 | ndp->ni_nameiop = LOOKUP | FOLLOW; | |
1608 | ndp->ni_segflg = UIO_USERSPACE; | |
1609 | ndp->ni_dirp = uap->fname; | |
1610 | if (error = namei(ndp)) | |
1611 | RETURN (error); | |
1612 | vp = ndp->ni_vp; | |
1613 | if (vp->v_type != VCHR && vp->v_type != VBLK) { | |
1614 | error = EINVAL; | |
1615 | goto out; | |
1616 | } | |
6a6a1e5f | 1617 | if (error = VOP_GETATTR(vp, &vattr, ndp->ni_cred)) |
b0a98f13 | 1618 | goto out; |
6a6a1e5f KM |
1619 | if (ndp->ni_cred->cr_uid != vattr.va_uid || |
1620 | (error = suser(ndp->ni_cred, &u.u_acflag))) | |
b0a98f13 | 1621 | goto out; |
8b81d198 | 1622 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 1623 | vgoneall(vp); |
b0a98f13 MT |
1624 | out: |
1625 | vrele(vp); | |
1626 | RETURN (error); | |
1627 | } | |
1628 | ||
601de38e KM |
1629 | getvnode(ofile, fdes, fpp) |
1630 | struct file *ofile[]; | |
fc2aed1e KM |
1631 | struct file **fpp; |
1632 | int fdes; | |
1633 | { | |
1634 | struct file *fp; | |
1635 | ||
601de38e | 1636 | if ((unsigned)fdes >= NOFILE || (fp = ofile[fdes]) == NULL) |
fc2aed1e KM |
1637 | return (EBADF); |
1638 | if (fp->f_type != DTYPE_VNODE) | |
1639 | return (EINVAL); | |
1640 | *fpp = fp; | |
1641 | return (0); | |
88a7a62a | 1642 | } |