Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
fc2aed1e KM |
2 | * Copyright (c) 1989 The Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
fc2aed1e | 6 | * |
8e88b0cd | 7 | * @(#)vfs_syscalls.c 7.105 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
38a01dbe KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/namei.h> | |
13 | #include <sys/filedesc.h> | |
14 | #include <sys/kernel.h> | |
15 | #include <sys/file.h> | |
16 | #include <sys/stat.h> | |
17 | #include <sys/vnode.h> | |
18 | #include <sys/mount.h> | |
19 | #include <sys/proc.h> | |
20 | #include <sys/uio.h> | |
21 | #include <sys/malloc.h> | |
22 | #include <sys/dirent.h> | |
23 | ||
be320a2b | 24 | #include <vm/vm.h> |
88a7a62a | 25 | |
a5368812 KM |
26 | #ifdef REF_DIAGNOSTIC |
27 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
28 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
29 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
30 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
31 | #else | |
32 | #define CHECKPOINTREF | |
33 | #define CHECKREFS(D) | |
34 | #endif | |
35 | ||
fc2aed1e KM |
36 | /* |
37 | * Virtual File System System Calls | |
38 | */ | |
3e78e260 | 39 | |
4f083fd7 | 40 | /* |
d4ed1dcd | 41 | * Mount system call. |
4f083fd7 | 42 | */ |
9e97623a CT |
43 | struct mount_args { |
44 | int type; | |
45 | char *dir; | |
46 | int flags; | |
47 | caddr_t data; | |
48 | }; | |
6a6a1e5f KM |
49 | /* ARGSUSED */ |
50 | mount(p, uap, retval) | |
5e00df3b | 51 | struct proc *p; |
9e97623a | 52 | register struct mount_args *uap; |
6a6a1e5f KM |
53 | int *retval; |
54 | { | |
d48157d5 KM |
55 | register struct vnode *vp; |
56 | register struct mount *mp; | |
47971887 | 57 | int error, flag; |
8429d022 | 58 | struct nameidata nd; |
3e78e260 | 59 | |
fc2aed1e KM |
60 | /* |
61 | * Must be super user | |
62 | */ | |
8429d022 MK |
63 | if (error = suser(p->p_ucred, &p->p_acflag)) |
64 | return (error); | |
fc2aed1e KM |
65 | /* |
66 | * Get vnode to be covered | |
67 | */ | |
dd4c01c2 KM |
68 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->dir, p); |
69 | if (error = namei(&nd)) | |
8429d022 | 70 | return (error); |
dd4c01c2 | 71 | vp = nd.ni_vp; |
54fb9dc2 | 72 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
73 | if ((vp->v_flag & VROOT) == 0) { |
74 | vput(vp); | |
8429d022 | 75 | return (EINVAL); |
d48157d5 KM |
76 | } |
77 | mp = vp->v_mount; | |
db62a40f | 78 | flag = mp->mnt_flag; |
d48157d5 | 79 | /* |
db62a40f KM |
80 | * We only allow the filesystem to be reloaded if it |
81 | * is currently mounted read-only. | |
d48157d5 | 82 | */ |
db62a40f KM |
83 | if ((uap->flags & MNT_RELOAD) && |
84 | ((mp->mnt_flag & MNT_RDONLY) == 0)) { | |
d48157d5 | 85 | vput(vp); |
8429d022 | 86 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 87 | } |
db62a40f KM |
88 | mp->mnt_flag |= |
89 | uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); | |
d48157d5 KM |
90 | VOP_UNLOCK(vp); |
91 | goto update; | |
92 | } | |
95a9cadb | 93 | if (vp->v_usecount != 1 && (uap->flags & MNT_UNION) == 0) { |
fc2aed1e | 94 | vput(vp); |
8429d022 | 95 | return (EBUSY); |
fc2aed1e | 96 | } |
c05286bd | 97 | if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) |
09d2ef1a | 98 | return (error); |
fc2aed1e KM |
99 | if (vp->v_type != VDIR) { |
100 | vput(vp); | |
8429d022 | 101 | return (ENOTDIR); |
fc2aed1e | 102 | } |
62d239e5 | 103 | if ((unsigned long)uap->type > MOUNT_MAXTYPE || |
fc2aed1e KM |
104 | vfssw[uap->type] == (struct vfsops *)0) { |
105 | vput(vp); | |
8429d022 | 106 | return (ENODEV); |
fc2aed1e KM |
107 | } |
108 | ||
109 | /* | |
d48157d5 | 110 | * Allocate and initialize the file system. |
fc2aed1e KM |
111 | */ |
112 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
113 | M_MOUNT, M_WAITOK); | |
b1341251 | 114 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 115 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
116 | if (error = vfs_lock(mp)) { |
117 | free((caddr_t)mp, M_MOUNT); | |
118 | vput(vp); | |
8429d022 | 119 | return (error); |
d48157d5 KM |
120 | } |
121 | if (vp->v_mountedhere != (struct mount *)0) { | |
122 | vfs_unlock(mp); | |
123 | free((caddr_t)mp, M_MOUNT); | |
124 | vput(vp); | |
8429d022 | 125 | return (EBUSY); |
d48157d5 | 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; | |
db62a40f KM |
135 | else if (mp->mnt_flag & MNT_RDONLY) |
136 | mp->mnt_flag |= MNT_WANTRDWR; | |
137 | mp->mnt_flag &=~ | |
138 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
139 | mp->mnt_flag |= uap->flags & | |
140 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
d48157d5 KM |
141 | /* |
142 | * Mount the filesystem. | |
143 | */ | |
dd4c01c2 | 144 | error = VFS_MOUNT(mp, uap->dir, uap->data, &nd, p); |
54fb9dc2 | 145 | if (mp->mnt_flag & MNT_UPDATE) { |
d48157d5 | 146 | vrele(vp); |
db62a40f KM |
147 | if (mp->mnt_flag & MNT_WANTRDWR) |
148 | mp->mnt_flag &= ~MNT_RDONLY; | |
149 | mp->mnt_flag &=~ | |
150 | (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); | |
47971887 | 151 | if (error) |
54fb9dc2 | 152 | mp->mnt_flag = flag; |
8429d022 | 153 | return (error); |
d48157d5 | 154 | } |
92d0de98 KM |
155 | /* |
156 | * Put the new filesystem on the mount list after root. | |
157 | */ | |
54fb9dc2 KM |
158 | mp->mnt_next = rootfs->mnt_next; |
159 | mp->mnt_prev = rootfs; | |
160 | rootfs->mnt_next = mp; | |
161 | mp->mnt_next->mnt_prev = mp; | |
fc2aed1e | 162 | cache_purge(vp); |
fc2aed1e | 163 | if (!error) { |
d48157d5 | 164 | VOP_UNLOCK(vp); |
fc2aed1e | 165 | vfs_unlock(mp); |
2c69fe14 | 166 | error = VFS_START(mp, 0, p); |
fc2aed1e KM |
167 | } else { |
168 | vfs_remove(mp); | |
169 | free((caddr_t)mp, M_MOUNT); | |
d48157d5 | 170 | vput(vp); |
fc2aed1e | 171 | } |
8429d022 | 172 | return (error); |
3e78e260 BJ |
173 | } |
174 | ||
4f083fd7 | 175 | /* |
fc2aed1e KM |
176 | * Unmount system call. |
177 | * | |
178 | * Note: unmount takes a path to the vnode mounted on as argument, | |
179 | * not special file (as before). | |
4f083fd7 | 180 | */ |
9e97623a CT |
181 | struct unmount_args { |
182 | char *pathp; | |
183 | int flags; | |
184 | }; | |
6a6a1e5f KM |
185 | /* ARGSUSED */ |
186 | unmount(p, uap, retval) | |
5e00df3b | 187 | struct proc *p; |
9e97623a | 188 | register struct unmount_args *uap; |
6a6a1e5f KM |
189 | int *retval; |
190 | { | |
fc2aed1e | 191 | register struct vnode *vp; |
9151110e | 192 | struct mount *mp; |
fc2aed1e | 193 | int error; |
8429d022 | 194 | struct nameidata nd; |
fc2aed1e KM |
195 | |
196 | /* | |
197 | * Must be super user | |
198 | */ | |
8429d022 MK |
199 | if (error = suser(p->p_ucred, &p->p_acflag)) |
200 | return (error); | |
fc2aed1e | 201 | |
dd4c01c2 KM |
202 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->pathp, p); |
203 | if (error = namei(&nd)) | |
8429d022 | 204 | return (error); |
dd4c01c2 | 205 | vp = nd.ni_vp; |
fc2aed1e KM |
206 | /* |
207 | * Must be the root of the filesystem | |
208 | */ | |
209 | if ((vp->v_flag & VROOT) == 0) { | |
210 | vput(vp); | |
8429d022 | 211 | return (EINVAL); |
fc2aed1e KM |
212 | } |
213 | mp = vp->v_mount; | |
214 | vput(vp); | |
2c69fe14 | 215 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
216 | } |
217 | ||
218 | /* | |
219 | * Do an unmount. | |
220 | */ | |
2c69fe14 | 221 | dounmount(mp, flags, p) |
9151110e KM |
222 | register struct mount *mp; |
223 | int flags; | |
2c69fe14 | 224 | struct proc *p; |
9151110e KM |
225 | { |
226 | struct vnode *coveredvp; | |
227 | int error; | |
228 | ||
54fb9dc2 | 229 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
230 | if (vfs_busy(mp)) |
231 | return (EBUSY); | |
54fb9dc2 | 232 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 233 | if (error = vfs_lock(mp)) |
9151110e | 234 | return (error); |
fc2aed1e | 235 | |
9db58063 | 236 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 237 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
238 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
239 | (flags & MNT_FORCE)) | |
2c69fe14 | 240 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 241 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 242 | vfs_unbusy(mp); |
fc2aed1e KM |
243 | if (error) { |
244 | vfs_unlock(mp); | |
245 | } else { | |
246 | vrele(coveredvp); | |
247 | vfs_remove(mp); | |
ea2761aa KM |
248 | if (mp->mnt_mounth != NULL) |
249 | panic("unmount: dangling vnode"); | |
fc2aed1e KM |
250 | free((caddr_t)mp, M_MOUNT); |
251 | } | |
9151110e | 252 | return (error); |
fc2aed1e KM |
253 | } |
254 | ||
255 | /* | |
256 | * Sync system call. | |
257 | * Sync each mounted filesystem. | |
258 | */ | |
0649728d KM |
259 | #ifdef DIAGNOSTIC |
260 | int syncprt = 0; | |
261 | #endif | |
262 | ||
9e97623a CT |
263 | struct sync_args { |
264 | int dummy; | |
265 | }; | |
ff4fb102 | 266 | /* ARGSUSED */ |
6a6a1e5f | 267 | sync(p, uap, retval) |
5e00df3b | 268 | struct proc *p; |
9e97623a | 269 | struct sync_args *uap; |
6a6a1e5f | 270 | int *retval; |
3e78e260 | 271 | { |
fc2aed1e | 272 | register struct mount *mp; |
c001b1c3 | 273 | struct mount *omp; |
fc2aed1e KM |
274 | |
275 | mp = rootfs; | |
276 | do { | |
62e35d50 KM |
277 | /* |
278 | * The lock check below is to avoid races with mount | |
279 | * and unmount. | |
280 | */ | |
54fb9dc2 | 281 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 282 | !vfs_busy(mp)) { |
09d2ef1a | 283 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
c001b1c3 | 284 | omp = mp; |
54fb9dc2 | 285 | mp = mp->mnt_next; |
c001b1c3 KM |
286 | vfs_unbusy(omp); |
287 | } else | |
54fb9dc2 | 288 | mp = mp->mnt_next; |
fc2aed1e | 289 | } while (mp != rootfs); |
0649728d KM |
290 | #ifdef DIAGNOSTIC |
291 | if (syncprt) | |
292 | vfs_bufstats(); | |
293 | #endif /* DIAGNOSTIC */ | |
78eeb014 | 294 | return (0); |
fc2aed1e KM |
295 | } |
296 | ||
c001b1c3 | 297 | /* |
d4ed1dcd | 298 | * Operate on filesystem quotas. |
c001b1c3 | 299 | */ |
9e97623a CT |
300 | struct quotactl_args { |
301 | char *path; | |
302 | int cmd; | |
303 | int uid; | |
304 | caddr_t arg; | |
305 | }; | |
6a6a1e5f KM |
306 | /* ARGSUSED */ |
307 | quotactl(p, uap, retval) | |
5e00df3b | 308 | struct proc *p; |
9e97623a | 309 | register struct quotactl_args *uap; |
6a6a1e5f KM |
310 | int *retval; |
311 | { | |
c001b1c3 | 312 | register struct mount *mp; |
c001b1c3 | 313 | int error; |
8429d022 | 314 | struct nameidata nd; |
c001b1c3 | 315 | |
dd4c01c2 KM |
316 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
317 | if (error = namei(&nd)) | |
8429d022 | 318 | return (error); |
dd4c01c2 KM |
319 | mp = nd.ni_vp->v_mount; |
320 | vrele(nd.ni_vp); | |
2c69fe14 | 321 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
322 | } |
323 | ||
fc2aed1e | 324 | /* |
d4ed1dcd | 325 | * Get filesystem statistics. |
fc2aed1e | 326 | */ |
9e97623a CT |
327 | struct statfs_args { |
328 | char *path; | |
329 | struct statfs *buf; | |
330 | }; | |
6a6a1e5f KM |
331 | /* ARGSUSED */ |
332 | statfs(p, uap, retval) | |
5e00df3b | 333 | struct proc *p; |
9e97623a | 334 | register struct statfs_args *uap; |
6a6a1e5f KM |
335 | int *retval; |
336 | { | |
3f705640 | 337 | register struct mount *mp; |
62e35d50 | 338 | register struct statfs *sp; |
fc2aed1e | 339 | int error; |
8429d022 | 340 | struct nameidata nd; |
3e78e260 | 341 | |
dd4c01c2 KM |
342 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
343 | if (error = namei(&nd)) | |
8429d022 | 344 | return (error); |
dd4c01c2 | 345 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 346 | sp = &mp->mnt_stat; |
dd4c01c2 | 347 | vrele(nd.ni_vp); |
2c69fe14 | 348 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 349 | return (error); |
54fb9dc2 | 350 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 351 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
352 | } |
353 | ||
6a6a1e5f | 354 | /* |
d4ed1dcd | 355 | * Get filesystem statistics. |
6a6a1e5f | 356 | */ |
9e97623a CT |
357 | struct fstatfs_args { |
358 | int fd; | |
359 | struct statfs *buf; | |
360 | }; | |
6a6a1e5f KM |
361 | /* ARGSUSED */ |
362 | fstatfs(p, uap, retval) | |
5e00df3b | 363 | struct proc *p; |
9e97623a | 364 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
365 | int *retval; |
366 | { | |
fc2aed1e | 367 | struct file *fp; |
3f705640 | 368 | struct mount *mp; |
62e35d50 | 369 | register struct statfs *sp; |
fc2aed1e KM |
370 | int error; |
371 | ||
5e00df3b | 372 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 373 | return (error); |
3f705640 | 374 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 375 | sp = &mp->mnt_stat; |
2c69fe14 | 376 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 377 | return (error); |
54fb9dc2 | 378 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 379 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
380 | } |
381 | ||
bfcdbfbf | 382 | /* |
d4ed1dcd | 383 | * Get statistics on all filesystems. |
bfcdbfbf | 384 | */ |
9e97623a CT |
385 | struct getfsstat_args { |
386 | struct statfs *buf; | |
387 | long bufsize; | |
388 | int flags; | |
389 | }; | |
6a6a1e5f | 390 | getfsstat(p, uap, retval) |
5e00df3b | 391 | struct proc *p; |
9e97623a | 392 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
393 | int *retval; |
394 | { | |
bfcdbfbf | 395 | register struct mount *mp; |
62e35d50 | 396 | register struct statfs *sp; |
f62fad9a | 397 | caddr_t sfsp; |
bfcdbfbf KM |
398 | long count, maxcount, error; |
399 | ||
400 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 401 | sfsp = (caddr_t)uap->buf; |
bfcdbfbf KM |
402 | mp = rootfs; |
403 | count = 0; | |
404 | do { | |
54fb9dc2 KM |
405 | if (sfsp && count < maxcount && |
406 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
407 | sp = &mp->mnt_stat; | |
62e35d50 KM |
408 | /* |
409 | * If MNT_NOWAIT is specified, do not refresh the | |
410 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
411 | */ | |
412 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
413 | (uap->flags & MNT_WAIT)) && | |
2c69fe14 | 414 | (error = VFS_STATFS(mp, sp, p))) { |
54fb9dc2 | 415 | mp = mp->mnt_prev; |
fd8516be KM |
416 | continue; |
417 | } | |
54fb9dc2 | 418 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 419 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 420 | return (error); |
62e35d50 | 421 | sfsp += sizeof(*sp); |
bfcdbfbf | 422 | } |
f62fad9a | 423 | count++; |
54fb9dc2 | 424 | mp = mp->mnt_prev; |
bfcdbfbf KM |
425 | } while (mp != rootfs); |
426 | if (sfsp && count > maxcount) | |
6a6a1e5f | 427 | *retval = maxcount; |
bfcdbfbf | 428 | else |
6a6a1e5f | 429 | *retval = count; |
8429d022 | 430 | return (0); |
bfcdbfbf KM |
431 | } |
432 | ||
6995a2cb KM |
433 | /* |
434 | * Change current working directory to a given file descriptor. | |
435 | */ | |
9e97623a CT |
436 | struct fchdir_args { |
437 | int fd; | |
438 | }; | |
6a6a1e5f KM |
439 | /* ARGSUSED */ |
440 | fchdir(p, uap, retval) | |
5e00df3b | 441 | struct proc *p; |
9e97623a | 442 | struct fchdir_args *uap; |
6a6a1e5f KM |
443 | int *retval; |
444 | { | |
5e00df3b | 445 | register struct filedesc *fdp = p->p_fd; |
6995a2cb KM |
446 | register struct vnode *vp; |
447 | struct file *fp; | |
448 | int error; | |
449 | ||
5e00df3b | 450 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 451 | return (error); |
6995a2cb KM |
452 | vp = (struct vnode *)fp->f_data; |
453 | VOP_LOCK(vp); | |
454 | if (vp->v_type != VDIR) | |
455 | error = ENOTDIR; | |
456 | else | |
2c69fe14 | 457 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
6995a2cb | 458 | VOP_UNLOCK(vp); |
ab214c34 | 459 | if (error) |
8429d022 | 460 | return (error); |
ab214c34 | 461 | VREF(vp); |
5e00df3b KM |
462 | vrele(fdp->fd_cdir); |
463 | fdp->fd_cdir = vp; | |
8429d022 | 464 | return (0); |
6995a2cb KM |
465 | } |
466 | ||
4f083fd7 | 467 | /* |
fc2aed1e | 468 | * Change current working directory (``.''). |
4f083fd7 | 469 | */ |
9e97623a CT |
470 | struct chdir_args { |
471 | char *fname; | |
472 | }; | |
6a6a1e5f KM |
473 | /* ARGSUSED */ |
474 | chdir(p, uap, retval) | |
5e00df3b | 475 | struct proc *p; |
9e97623a | 476 | struct chdir_args *uap; |
6a6a1e5f KM |
477 | int *retval; |
478 | { | |
5e00df3b | 479 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 480 | int error; |
8429d022 | 481 | struct nameidata nd; |
3e78e260 | 482 | |
dd4c01c2 | 483 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 484 | if (error = chdirec(&nd, p)) |
8429d022 | 485 | return (error); |
5e00df3b | 486 | vrele(fdp->fd_cdir); |
dd4c01c2 | 487 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 488 | return (0); |
fc2aed1e KM |
489 | } |
490 | ||
491 | /* | |
492 | * Change notion of root (``/'') directory. | |
493 | */ | |
9e97623a CT |
494 | struct chroot_args { |
495 | char *fname; | |
496 | }; | |
6a6a1e5f KM |
497 | /* ARGSUSED */ |
498 | chroot(p, uap, retval) | |
5e00df3b | 499 | struct proc *p; |
9e97623a | 500 | struct chroot_args *uap; |
6a6a1e5f KM |
501 | int *retval; |
502 | { | |
5e00df3b | 503 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 504 | int error; |
8429d022 | 505 | struct nameidata nd; |
fc2aed1e | 506 | |
8429d022 MK |
507 | if (error = suser(p->p_ucred, &p->p_acflag)) |
508 | return (error); | |
dd4c01c2 | 509 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 510 | if (error = chdirec(&nd, p)) |
8429d022 | 511 | return (error); |
5e00df3b KM |
512 | if (fdp->fd_rdir != NULL) |
513 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 514 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 515 | return (0); |
fc2aed1e KM |
516 | } |
517 | ||
518 | /* | |
519 | * Common routine for chroot and chdir. | |
520 | */ | |
8429d022 | 521 | chdirec(ndp, p) |
dd4c01c2 | 522 | register struct nameidata *ndp; |
8429d022 | 523 | struct proc *p; |
fc2aed1e KM |
524 | { |
525 | struct vnode *vp; | |
526 | int error; | |
527 | ||
dd4c01c2 | 528 | if (error = namei(ndp)) |
fc2aed1e KM |
529 | return (error); |
530 | vp = ndp->ni_vp; | |
531 | if (vp->v_type != VDIR) | |
532 | error = ENOTDIR; | |
533 | else | |
2c69fe14 | 534 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
535 | VOP_UNLOCK(vp); |
536 | if (error) | |
537 | vrele(vp); | |
538 | return (error); | |
3e78e260 BJ |
539 | } |
540 | ||
541 | /* | |
542 | * Open system call. | |
6a6a1e5f KM |
543 | * Check permissions, allocate an open file structure, |
544 | * and call the device open routine if any. | |
3e78e260 | 545 | */ |
9e97623a CT |
546 | struct open_args { |
547 | char *fname; | |
548 | int mode; | |
549 | int crtmode; | |
550 | }; | |
6a6a1e5f | 551 | open(p, uap, retval) |
5e00df3b | 552 | struct proc *p; |
9e97623a | 553 | register struct open_args *uap; |
6a6a1e5f | 554 | int *retval; |
3e78e260 | 555 | { |
5e00df3b | 556 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 557 | register struct file *fp; |
6aaf085a | 558 | register struct vnode *vp; |
6a6a1e5f | 559 | int fmode, cmode; |
fc2aed1e | 560 | struct file *nfp; |
ff8d1617 KM |
561 | int type, indx, error; |
562 | struct flock lf; | |
8429d022 | 563 | struct nameidata nd; |
fc2aed1e KM |
564 | extern struct fileops vnops; |
565 | ||
5e00df3b | 566 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 567 | return (error); |
fc2aed1e | 568 | fp = nfp; |
13b8b20b | 569 | fmode = FFLAGS(uap->mode); |
5e00df3b | 570 | cmode = ((uap->crtmode &~ fdp->fd_cmask) & 07777) &~ S_ISVTX; |
dd4c01c2 | 571 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
03951846 | 572 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
dd4c01c2 | 573 | if (error = vn_open(&nd, fmode, cmode)) { |
336f999d | 574 | ffree(fp); |
f0e12026 KM |
575 | if ((error == ENODEV || error == ENXIO) && |
576 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
da5acac3 JSP |
577 | (error = dupfdopen(fdp, indx, p->p_dupfd, |
578 | fmode, error)) == 0) { | |
6a6a1e5f | 579 | *retval = indx; |
8429d022 | 580 | return (0); |
6a6a1e5f | 581 | } |
b10521d6 KM |
582 | if (error == ERESTART) |
583 | error = EINTR; | |
78eeb014 | 584 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 585 | return (error); |
528f664c | 586 | } |
da5acac3 | 587 | p->p_dupfd = 0; |
dd4c01c2 | 588 | vp = nd.ni_vp; |
b40ecf6f | 589 | fp->f_flag = fmode & FMASK; |
8932276d KM |
590 | fp->f_type = DTYPE_VNODE; |
591 | fp->f_ops = &vnops; | |
592 | fp->f_data = (caddr_t)vp; | |
ff8d1617 KM |
593 | if (fmode & (O_EXLOCK | O_SHLOCK)) { |
594 | lf.l_whence = SEEK_SET; | |
595 | lf.l_start = 0; | |
596 | lf.l_len = 0; | |
597 | if (fmode & O_EXLOCK) | |
598 | lf.l_type = F_WRLCK; | |
599 | else | |
600 | lf.l_type = F_RDLCK; | |
601 | type = F_FLOCK; | |
602 | if ((fmode & FNONBLOCK) == 0) | |
603 | type |= F_WAIT; | |
6aaf085a KM |
604 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
605 | VOP_UNLOCK(vp); | |
606 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); | |
336f999d | 607 | ffree(fp); |
ff8d1617 KM |
608 | fdp->fd_ofiles[indx] = NULL; |
609 | return (error); | |
610 | } | |
b40ecf6f | 611 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 612 | } |
6aaf085a | 613 | VOP_UNLOCK(vp); |
6a6a1e5f | 614 | *retval = indx; |
8429d022 | 615 | return (0); |
3e78e260 BJ |
616 | } |
617 | ||
4fde03dc | 618 | #ifdef COMPAT_43 |
3e78e260 | 619 | /* |
6a6a1e5f | 620 | * Creat system call. |
3e78e260 | 621 | */ |
9e97623a CT |
622 | struct ocreat_args { |
623 | char *fname; | |
624 | int fmode; | |
625 | }; | |
4fde03dc | 626 | ocreat(p, uap, retval) |
6a6a1e5f | 627 | struct proc *p; |
9e97623a | 628 | register struct ocreat_args *uap; |
6a6a1e5f | 629 | int *retval; |
3e78e260 | 630 | { |
9e97623a | 631 | struct open_args openuap; |
6a6a1e5f KM |
632 | |
633 | openuap.fname = uap->fname; | |
634 | openuap.crtmode = uap->fmode; | |
635 | openuap.mode = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 636 | return (open(p, &openuap, retval)); |
6a6a1e5f | 637 | } |
4fde03dc | 638 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
639 | |
640 | /* | |
d4ed1dcd | 641 | * Mknod system call. |
6a6a1e5f | 642 | */ |
9e97623a CT |
643 | struct mknod_args { |
644 | char *fname; | |
645 | int fmode; | |
646 | int dev; | |
647 | }; | |
6a6a1e5f KM |
648 | /* ARGSUSED */ |
649 | mknod(p, uap, retval) | |
5e00df3b | 650 | struct proc *p; |
9e97623a | 651 | register struct mknod_args *uap; |
6a6a1e5f KM |
652 | int *retval; |
653 | { | |
fc2aed1e KM |
654 | register struct vnode *vp; |
655 | struct vattr vattr; | |
656 | int error; | |
8429d022 | 657 | struct nameidata nd; |
3e78e260 | 658 | |
a5368812 | 659 | CHECKPOINTREF; |
8429d022 MK |
660 | if (error = suser(p->p_ucred, &p->p_acflag)) |
661 | return (error); | |
dd4c01c2 KM |
662 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
663 | if (error = namei(&nd)) | |
8429d022 | 664 | return (error); |
dd4c01c2 | 665 | vp = nd.ni_vp; |
fc2aed1e KM |
666 | if (vp != NULL) { |
667 | error = EEXIST; | |
88a7a62a | 668 | goto out; |
3e78e260 | 669 | } |
3ee1461b | 670 | VATTR_NULL(&vattr); |
ab389897 | 671 | switch (uap->fmode & S_IFMT) { |
88a7a62a | 672 | |
ab389897 | 673 | case S_IFMT: /* used by badsect to flag bad sectors */ |
fc2aed1e KM |
674 | vattr.va_type = VBAD; |
675 | break; | |
ab389897 | 676 | case S_IFCHR: |
fc2aed1e KM |
677 | vattr.va_type = VCHR; |
678 | break; | |
ab389897 | 679 | case S_IFBLK: |
fc2aed1e KM |
680 | vattr.va_type = VBLK; |
681 | break; | |
682 | default: | |
683 | error = EINVAL; | |
684 | goto out; | |
3e78e260 | 685 | } |
5e00df3b | 686 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
fc2aed1e | 687 | vattr.va_rdev = uap->dev; |
3e78e260 | 688 | out: |
66955caf | 689 | if (!error) { |
dd4c01c2 KM |
690 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
691 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 692 | } else { |
dd4c01c2 KM |
693 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
694 | if (nd.ni_dvp == vp) | |
695 | vrele(nd.ni_dvp); | |
6c44e83b | 696 | else |
dd4c01c2 | 697 | vput(nd.ni_dvp); |
66955caf KM |
698 | if (vp) |
699 | vrele(vp); | |
700 | } | |
a5368812 | 701 | CHECKREFS("mknod"); |
8429d022 | 702 | return (error); |
3e78e260 BJ |
703 | } |
704 | ||
4751dd21 | 705 | /* |
d4ed1dcd | 706 | * Mkfifo system call. |
4751dd21 | 707 | */ |
9e97623a CT |
708 | struct mkfifo_args { |
709 | char *fname; | |
710 | int fmode; | |
711 | }; | |
6a6a1e5f KM |
712 | /* ARGSUSED */ |
713 | mkfifo(p, uap, retval) | |
5e00df3b | 714 | struct proc *p; |
9e97623a | 715 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
716 | int *retval; |
717 | { | |
4751dd21 KM |
718 | struct vattr vattr; |
719 | int error; | |
8429d022 | 720 | struct nameidata nd; |
4751dd21 KM |
721 | |
722 | #ifndef FIFO | |
8429d022 | 723 | return (EOPNOTSUPP); |
4751dd21 | 724 | #else |
dd4c01c2 KM |
725 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
726 | if (error = namei(&nd)) | |
8429d022 | 727 | return (error); |
dd4c01c2 KM |
728 | if (nd.ni_vp != NULL) { |
729 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
730 | if (nd.ni_dvp == nd.ni_vp) | |
731 | vrele(nd.ni_dvp); | |
6c44e83b | 732 | else |
dd4c01c2 KM |
733 | vput(nd.ni_dvp); |
734 | vrele(nd.ni_vp); | |
8429d022 | 735 | return (EEXIST); |
4751dd21 | 736 | } |
3658f091 KB |
737 | VATTR_NULL(&vattr); |
738 | vattr.va_type = VFIFO; | |
5e00df3b | 739 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
740 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
741 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
742 | #endif /* FIFO */ |
743 | } | |
744 | ||
3e78e260 | 745 | /* |
d4ed1dcd | 746 | * Link system call. |
3e78e260 | 747 | */ |
9e97623a CT |
748 | struct link_args { |
749 | char *target; | |
750 | char *linkname; | |
751 | }; | |
6a6a1e5f KM |
752 | /* ARGSUSED */ |
753 | link(p, uap, retval) | |
5e00df3b | 754 | struct proc *p; |
9e97623a | 755 | register struct link_args *uap; |
6a6a1e5f KM |
756 | int *retval; |
757 | { | |
fc2aed1e KM |
758 | register struct vnode *vp, *xp; |
759 | int error; | |
8429d022 | 760 | struct nameidata nd; |
3e78e260 | 761 | |
a5368812 | 762 | CHECKPOINTREF; |
dd4c01c2 KM |
763 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->target, p); |
764 | if (error = namei(&nd)) | |
8429d022 | 765 | return (error); |
dd4c01c2 | 766 | vp = nd.ni_vp; |
fc2aed1e | 767 | if (vp->v_type == VDIR && |
8429d022 | 768 | (error = suser(p->p_ucred, &p->p_acflag))) |
fc2aed1e | 769 | goto out1; |
dd4c01c2 KM |
770 | nd.ni_cnd.cn_nameiop = CREATE; |
771 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
772 | nd.ni_dirp = (caddr_t)uap->linkname; | |
773 | if (error = namei(&nd)) | |
fc2aed1e | 774 | goto out1; |
dd4c01c2 | 775 | xp = nd.ni_vp; |
3e78e260 | 776 | if (xp != NULL) { |
fc2aed1e | 777 | error = EEXIST; |
3e78e260 BJ |
778 | goto out; |
779 | } | |
dd4c01c2 | 780 | xp = nd.ni_dvp; |
3e78e260 | 781 | out: |
66955caf | 782 | if (!error) { |
e62d4143 KM |
783 | LEASE_CHECK(xp, p, p->p_ucred, LEASE_WRITE); |
784 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); | |
532a2b44 | 785 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); |
66955caf | 786 | } else { |
dd4c01c2 KM |
787 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
788 | if (nd.ni_dvp == nd.ni_vp) | |
789 | vrele(nd.ni_dvp); | |
6c44e83b | 790 | else |
dd4c01c2 KM |
791 | vput(nd.ni_dvp); |
792 | if (nd.ni_vp) | |
793 | vrele(nd.ni_vp); | |
66955caf | 794 | } |
fc2aed1e KM |
795 | out1: |
796 | vrele(vp); | |
a5368812 | 797 | CHECKREFS("link"); |
8429d022 | 798 | return (error); |
3e78e260 BJ |
799 | } |
800 | ||
801 | /* | |
d4ed1dcd | 802 | * Make a symbolic link. |
3e78e260 | 803 | */ |
9e97623a CT |
804 | struct symlink_args { |
805 | char *target; | |
806 | char *linkname; | |
807 | }; | |
6a6a1e5f KM |
808 | /* ARGSUSED */ |
809 | symlink(p, uap, retval) | |
5e00df3b | 810 | struct proc *p; |
9e97623a | 811 | register struct symlink_args *uap; |
6a6a1e5f KM |
812 | int *retval; |
813 | { | |
fc2aed1e KM |
814 | struct vattr vattr; |
815 | char *target; | |
816 | int error; | |
8429d022 | 817 | struct nameidata nd; |
3e78e260 | 818 | |
a5368812 | 819 | CHECKPOINTREF; |
fc2aed1e KM |
820 | MALLOC(target, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
821 | if (error = copyinstr(uap->target, target, MAXPATHLEN, (u_int *)0)) | |
66955caf | 822 | goto out; |
dd4c01c2 KM |
823 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->linkname, p); |
824 | if (error = namei(&nd)) | |
66955caf | 825 | goto out; |
dd4c01c2 KM |
826 | if (nd.ni_vp) { |
827 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
828 | if (nd.ni_dvp == nd.ni_vp) | |
829 | vrele(nd.ni_dvp); | |
6c44e83b | 830 | else |
dd4c01c2 KM |
831 | vput(nd.ni_dvp); |
832 | vrele(nd.ni_vp); | |
fc2aed1e KM |
833 | error = EEXIST; |
834 | goto out; | |
3e78e260 | 835 | } |
3ee1461b | 836 | VATTR_NULL(&vattr); |
5e00df3b | 837 | vattr.va_mode = 0777 &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
838 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
839 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, target); | |
fc2aed1e | 840 | out: |
fc2aed1e | 841 | FREE(target, M_NAMEI); |
a5368812 | 842 | CHECKREFS("symlink"); |
8429d022 | 843 | return (error); |
3e78e260 BJ |
844 | } |
845 | ||
846 | /* | |
d4ed1dcd | 847 | * Delete a name from the filesystem. |
3e78e260 | 848 | */ |
9e97623a CT |
849 | struct unlink_args { |
850 | char *name; | |
851 | }; | |
6a6a1e5f KM |
852 | /* ARGSUSED */ |
853 | unlink(p, uap, retval) | |
5e00df3b | 854 | struct proc *p; |
9e97623a | 855 | struct unlink_args *uap; |
6a6a1e5f KM |
856 | int *retval; |
857 | { | |
fc2aed1e KM |
858 | register struct vnode *vp; |
859 | int error; | |
8429d022 | 860 | struct nameidata nd; |
3e78e260 | 861 | |
a5368812 | 862 | CHECKPOINTREF; |
dd4c01c2 KM |
863 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
864 | if (error = namei(&nd)) | |
8429d022 | 865 | return (error); |
dd4c01c2 | 866 | vp = nd.ni_vp; |
fc2aed1e | 867 | if (vp->v_type == VDIR && |
8429d022 | 868 | (error = suser(p->p_ucred, &p->p_acflag))) |
3e78e260 BJ |
869 | goto out; |
870 | /* | |
d4ed1dcd | 871 | * The root of a mounted filesystem cannot be deleted. |
3e78e260 | 872 | */ |
fc2aed1e KM |
873 | if (vp->v_flag & VROOT) { |
874 | error = EBUSY; | |
3e78e260 BJ |
875 | goto out; |
876 | } | |
9db58063 | 877 | (void) vnode_pager_uncache(vp); |
3e78e260 | 878 | out: |
66955caf | 879 | if (!error) { |
dd4c01c2 | 880 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 881 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 882 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 883 | } else { |
dd4c01c2 KM |
884 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
885 | if (nd.ni_dvp == vp) | |
886 | vrele(nd.ni_dvp); | |
6c44e83b | 887 | else |
dd4c01c2 | 888 | vput(nd.ni_dvp); |
66955caf KM |
889 | vput(vp); |
890 | } | |
a5368812 | 891 | CHECKREFS("unlink"); |
8429d022 | 892 | return (error); |
3e78e260 BJ |
893 | } |
894 | ||
9e97623a | 895 | struct __lseek_args { |
2f2b3b3d CT |
896 | int fdes; |
897 | int pad; | |
898 | off_t off; | |
899 | int sbase; | |
900 | }; | |
901 | ||
8932276d | 902 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
3e78e260 | 903 | /* |
d4ed1dcd | 904 | * Seek system call. |
3e78e260 | 905 | */ |
9e97623a CT |
906 | struct lseek_args { |
907 | int fdes; | |
908 | long off; | |
909 | int sbase; | |
910 | }; | |
6a6a1e5f | 911 | lseek(p, uap, retval) |
be320a2b | 912 | struct proc *p; |
9e97623a CT |
913 | register struct lseek_args *uap; |
914 | int *retval; | |
be320a2b | 915 | { |
9e97623a | 916 | struct __lseek_args nuap; |
2f2b3b3d | 917 | off_t qret; |
be320a2b KM |
918 | int error; |
919 | ||
920 | nuap.fdes = uap->fdes; | |
921 | nuap.off = uap->off; | |
922 | nuap.sbase = uap->sbase; | |
ae9b6dc3 | 923 | error = __lseek(p, &nuap, &qret); |
9e97623a | 924 | *(long *)retval = qret; |
be320a2b KM |
925 | return (error); |
926 | } | |
8932276d | 927 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
928 | |
929 | /* | |
930 | * Seek system call. | |
931 | */ | |
ae9b6dc3 | 932 | __lseek(p, uap, retval) |
5e00df3b | 933 | struct proc *p; |
9e97623a CT |
934 | register struct __lseek_args *uap; |
935 | int *retval; | |
6a6a1e5f | 936 | { |
8429d022 | 937 | struct ucred *cred = p->p_ucred; |
5e00df3b | 938 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 939 | register struct file *fp; |
fc2aed1e KM |
940 | struct vattr vattr; |
941 | int error; | |
942 | ||
8429d022 | 943 | if ((unsigned)uap->fdes >= fdp->fd_nfiles || |
78eeb014 | 944 | (fp = fdp->fd_ofiles[uap->fdes]) == NULL) |
8429d022 | 945 | return (EBADF); |
fc2aed1e | 946 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 947 | return (ESPIPE); |
b4d1aee9 SL |
948 | switch (uap->sbase) { |
949 | ||
950 | case L_INCR: | |
951 | fp->f_offset += uap->off; | |
952 | break; | |
953 | ||
954 | case L_XTND: | |
fc2aed1e | 955 | if (error = VOP_GETATTR((struct vnode *)fp->f_data, |
2c69fe14 | 956 | &vattr, cred, p)) |
8429d022 | 957 | return (error); |
fc2aed1e | 958 | fp->f_offset = uap->off + vattr.va_size; |
b4d1aee9 SL |
959 | break; |
960 | ||
961 | case L_SET: | |
962 | fp->f_offset = uap->off; | |
963 | break; | |
964 | ||
965 | default: | |
8429d022 | 966 | return (EINVAL); |
b4d1aee9 | 967 | } |
9e97623a | 968 | *(off_t *)retval = fp->f_offset; |
8429d022 | 969 | return (0); |
3e78e260 BJ |
970 | } |
971 | ||
972 | /* | |
d4ed1dcd | 973 | * Check access permissions. |
3e78e260 | 974 | */ |
9e97623a CT |
975 | struct saccess_args { |
976 | char *fname; | |
977 | int fmode; | |
978 | }; | |
6a6a1e5f KM |
979 | /* ARGSUSED */ |
980 | saccess(p, uap, retval) | |
5e00df3b | 981 | struct proc *p; |
9e97623a | 982 | register struct saccess_args *uap; |
6a6a1e5f KM |
983 | int *retval; |
984 | { | |
8429d022 | 985 | register struct ucred *cred = p->p_ucred; |
fc2aed1e KM |
986 | register struct vnode *vp; |
987 | int error, mode, svuid, svgid; | |
8429d022 | 988 | struct nameidata nd; |
3e78e260 | 989 | |
6a6a1e5f KM |
990 | svuid = cred->cr_uid; |
991 | svgid = cred->cr_groups[0]; | |
8429d022 MK |
992 | cred->cr_uid = p->p_cred->p_ruid; |
993 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
dd4c01c2 KM |
994 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
995 | if (error = namei(&nd)) | |
fc2aed1e | 996 | goto out1; |
dd4c01c2 | 997 | vp = nd.ni_vp; |
fc2aed1e KM |
998 | /* |
999 | * fmode == 0 means only check for exist | |
1000 | */ | |
1001 | if (uap->fmode) { | |
1002 | mode = 0; | |
1003 | if (uap->fmode & R_OK) | |
1004 | mode |= VREAD; | |
1005 | if (uap->fmode & W_OK) | |
1006 | mode |= VWRITE; | |
1007 | if (uap->fmode & X_OK) | |
1008 | mode |= VEXEC; | |
9230ead4 | 1009 | if ((mode & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) |
2c69fe14 | 1010 | error = VOP_ACCESS(vp, mode, cred, p); |
3e78e260 | 1011 | } |
fc2aed1e KM |
1012 | vput(vp); |
1013 | out1: | |
6a6a1e5f KM |
1014 | cred->cr_uid = svuid; |
1015 | cred->cr_groups[0] = svgid; | |
8429d022 | 1016 | return (error); |
3e78e260 | 1017 | } |
d67a03eb | 1018 | |
8932276d | 1019 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1020 | /* |
d4ed1dcd KM |
1021 | * Stat system call. |
1022 | * This version follows links. | |
d67a03eb | 1023 | */ |
9e97623a CT |
1024 | struct ostat_args { |
1025 | char *fname; | |
1026 | struct ostat *ub; | |
1027 | }; | |
6a6a1e5f | 1028 | /* ARGSUSED */ |
ae9b6dc3 | 1029 | ostat(p, uap, retval) |
be320a2b | 1030 | struct proc *p; |
9e97623a | 1031 | register struct ostat_args *uap; |
be320a2b KM |
1032 | int *retval; |
1033 | { | |
1034 | struct stat sb; | |
1035 | struct ostat osb; | |
1036 | int error; | |
1037 | struct nameidata nd; | |
1038 | ||
1039 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1040 | if (error = namei(&nd)) | |
1041 | return (error); | |
1042 | error = vn_stat(nd.ni_vp, &sb, p); | |
1043 | vput(nd.ni_vp); | |
1044 | if (error) | |
1045 | return (error); | |
1046 | cvtstat(&sb, &osb); | |
1047 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1048 | return (error); | |
1049 | } | |
1050 | ||
1051 | /* | |
1052 | * Lstat system call. | |
1053 | * This version does not follow links. | |
1054 | */ | |
9e97623a CT |
1055 | struct olstat_args { |
1056 | char *fname; | |
1057 | struct ostat *ub; | |
1058 | }; | |
be320a2b | 1059 | /* ARGSUSED */ |
ae9b6dc3 | 1060 | olstat(p, uap, retval) |
be320a2b | 1061 | struct proc *p; |
9e97623a | 1062 | register struct olstat_args *uap; |
be320a2b KM |
1063 | int *retval; |
1064 | { | |
1065 | struct stat sb; | |
1066 | struct ostat osb; | |
1067 | int error; | |
1068 | struct nameidata nd; | |
1069 | ||
1070 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1071 | if (error = namei(&nd)) | |
1072 | return (error); | |
1073 | error = vn_stat(nd.ni_vp, &sb, p); | |
1074 | vput(nd.ni_vp); | |
1075 | if (error) | |
1076 | return (error); | |
1077 | cvtstat(&sb, &osb); | |
1078 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1079 | return (error); | |
1080 | } | |
1081 | ||
1082 | /* | |
1083 | * convert from an old to a new stat structure. | |
1084 | */ | |
1085 | cvtstat(st, ost) | |
1086 | struct stat *st; | |
1087 | struct ostat *ost; | |
1088 | { | |
1089 | ||
1090 | ost->st_dev = st->st_dev; | |
1091 | ost->st_ino = st->st_ino; | |
1092 | ost->st_mode = st->st_mode; | |
1093 | ost->st_nlink = st->st_nlink; | |
1094 | ost->st_uid = st->st_uid; | |
1095 | ost->st_gid = st->st_gid; | |
1096 | ost->st_rdev = st->st_rdev; | |
1097 | if (st->st_size < (quad_t)1 << 32) | |
1098 | ost->st_size = st->st_size; | |
1099 | else | |
1100 | ost->st_size = -2; | |
1101 | ost->st_atime = st->st_atime; | |
1102 | ost->st_mtime = st->st_mtime; | |
1103 | ost->st_ctime = st->st_ctime; | |
1104 | ost->st_blksize = st->st_blksize; | |
1105 | ost->st_blocks = st->st_blocks; | |
1106 | ost->st_flags = st->st_flags; | |
1107 | ost->st_gen = st->st_gen; | |
1108 | } | |
8932276d | 1109 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1110 | |
1111 | /* | |
1112 | * Stat system call. | |
1113 | * This version follows links. | |
1114 | */ | |
9e97623a CT |
1115 | struct stat_args { |
1116 | char *fname; | |
1117 | struct stat *ub; | |
1118 | }; | |
be320a2b | 1119 | /* ARGSUSED */ |
ae9b6dc3 | 1120 | stat(p, uap, retval) |
5e00df3b | 1121 | struct proc *p; |
9e97623a | 1122 | register struct stat_args *uap; |
6a6a1e5f | 1123 | int *retval; |
d67a03eb | 1124 | { |
6a6a1e5f KM |
1125 | struct stat sb; |
1126 | int error; | |
8429d022 | 1127 | struct nameidata nd; |
d67a03eb | 1128 | |
dd4c01c2 KM |
1129 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1130 | if (error = namei(&nd)) | |
8429d022 | 1131 | return (error); |
dd4c01c2 KM |
1132 | error = vn_stat(nd.ni_vp, &sb, p); |
1133 | vput(nd.ni_vp); | |
6a6a1e5f | 1134 | if (error) |
8429d022 | 1135 | return (error); |
6a6a1e5f | 1136 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1137 | return (error); |
d67a03eb BJ |
1138 | } |
1139 | ||
5485e062 | 1140 | /* |
d4ed1dcd KM |
1141 | * Lstat system call. |
1142 | * This version does not follow links. | |
5485e062 | 1143 | */ |
9e97623a CT |
1144 | struct lstat_args { |
1145 | char *fname; | |
1146 | struct stat *ub; | |
1147 | }; | |
6a6a1e5f | 1148 | /* ARGSUSED */ |
ae9b6dc3 | 1149 | lstat(p, uap, retval) |
5e00df3b | 1150 | struct proc *p; |
9e97623a | 1151 | register struct lstat_args *uap; |
6a6a1e5f KM |
1152 | int *retval; |
1153 | { | |
fc2aed1e KM |
1154 | struct stat sb; |
1155 | int error; | |
8429d022 | 1156 | struct nameidata nd; |
5485e062 | 1157 | |
dd4c01c2 KM |
1158 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1159 | if (error = namei(&nd)) | |
8429d022 | 1160 | return (error); |
dd4c01c2 KM |
1161 | error = vn_stat(nd.ni_vp, &sb, p); |
1162 | vput(nd.ni_vp); | |
fc2aed1e | 1163 | if (error) |
8429d022 | 1164 | return (error); |
fc2aed1e | 1165 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1166 | return (error); |
d67a03eb BJ |
1167 | } |
1168 | ||
1169 | /* | |
d4ed1dcd | 1170 | * Return target name of a symbolic link. |
5485e062 | 1171 | */ |
9e97623a CT |
1172 | struct readlink_args { |
1173 | char *name; | |
1174 | char *buf; | |
1175 | int count; | |
1176 | }; | |
6a6a1e5f KM |
1177 | /* ARGSUSED */ |
1178 | readlink(p, uap, retval) | |
5e00df3b | 1179 | struct proc *p; |
9e97623a | 1180 | register struct readlink_args *uap; |
6a6a1e5f KM |
1181 | int *retval; |
1182 | { | |
fc2aed1e KM |
1183 | register struct vnode *vp; |
1184 | struct iovec aiov; | |
1185 | struct uio auio; | |
1186 | int error; | |
8429d022 | 1187 | struct nameidata nd; |
5485e062 | 1188 | |
a5368812 | 1189 | CHECKPOINTREF; |
dd4c01c2 KM |
1190 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1191 | if (error = namei(&nd)) | |
8429d022 | 1192 | return (error); |
dd4c01c2 | 1193 | vp = nd.ni_vp; |
fc2aed1e KM |
1194 | if (vp->v_type != VLNK) { |
1195 | error = EINVAL; | |
5485e062 BJ |
1196 | goto out; |
1197 | } | |
fc2aed1e KM |
1198 | aiov.iov_base = uap->buf; |
1199 | aiov.iov_len = uap->count; | |
1200 | auio.uio_iov = &aiov; | |
1201 | auio.uio_iovcnt = 1; | |
1202 | auio.uio_offset = 0; | |
1203 | auio.uio_rw = UIO_READ; | |
1204 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1205 | auio.uio_procp = p; |
fc2aed1e | 1206 | auio.uio_resid = uap->count; |
8429d022 | 1207 | error = VOP_READLINK(vp, &auio, p->p_ucred); |
5485e062 | 1208 | out: |
fc2aed1e | 1209 | vput(vp); |
6a6a1e5f | 1210 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1211 | CHECKREFS("readlink"); |
8429d022 | 1212 | return (error); |
5485e062 BJ |
1213 | } |
1214 | ||
6995a2cb KM |
1215 | /* |
1216 | * Change flags of a file given path name. | |
1217 | */ | |
9e97623a CT |
1218 | struct chflags_args { |
1219 | char *fname; | |
1220 | int flags; | |
1221 | }; | |
6a6a1e5f KM |
1222 | /* ARGSUSED */ |
1223 | chflags(p, uap, retval) | |
5e00df3b | 1224 | struct proc *p; |
9e97623a | 1225 | register struct chflags_args *uap; |
6a6a1e5f KM |
1226 | int *retval; |
1227 | { | |
6995a2cb KM |
1228 | register struct vnode *vp; |
1229 | struct vattr vattr; | |
1230 | int error; | |
8429d022 | 1231 | struct nameidata nd; |
6995a2cb | 1232 | |
dd4c01c2 KM |
1233 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1234 | if (error = namei(&nd)) | |
8429d022 | 1235 | return (error); |
dd4c01c2 | 1236 | vp = nd.ni_vp; |
54fb9dc2 | 1237 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1238 | error = EROFS; |
1239 | goto out; | |
1240 | } | |
3658f091 KB |
1241 | VATTR_NULL(&vattr); |
1242 | vattr.va_flags = uap->flags; | |
e62d4143 | 1243 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1244 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1245 | out: |
1246 | vput(vp); | |
8429d022 | 1247 | return (error); |
6995a2cb KM |
1248 | } |
1249 | ||
1250 | /* | |
1251 | * Change flags of a file given a file descriptor. | |
1252 | */ | |
9e97623a CT |
1253 | struct fchflags_args { |
1254 | int fd; | |
1255 | int flags; | |
1256 | }; | |
6a6a1e5f KM |
1257 | /* ARGSUSED */ |
1258 | fchflags(p, uap, retval) | |
5e00df3b | 1259 | struct proc *p; |
9e97623a | 1260 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1261 | int *retval; |
1262 | { | |
6995a2cb KM |
1263 | struct vattr vattr; |
1264 | struct vnode *vp; | |
1265 | struct file *fp; | |
1266 | int error; | |
1267 | ||
5e00df3b | 1268 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1269 | return (error); |
6995a2cb KM |
1270 | vp = (struct vnode *)fp->f_data; |
1271 | VOP_LOCK(vp); | |
54fb9dc2 | 1272 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1273 | error = EROFS; |
1274 | goto out; | |
1275 | } | |
3658f091 KB |
1276 | VATTR_NULL(&vattr); |
1277 | vattr.va_flags = uap->flags; | |
e62d4143 | 1278 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1279 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1280 | out: |
1281 | VOP_UNLOCK(vp); | |
8429d022 | 1282 | return (error); |
6995a2cb KM |
1283 | } |
1284 | ||
4f083fd7 SL |
1285 | /* |
1286 | * Change mode of a file given path name. | |
1287 | */ | |
9e97623a CT |
1288 | struct chmod_args { |
1289 | char *fname; | |
1290 | int fmode; | |
1291 | }; | |
6a6a1e5f KM |
1292 | /* ARGSUSED */ |
1293 | chmod(p, uap, retval) | |
5e00df3b | 1294 | struct proc *p; |
9e97623a | 1295 | register struct chmod_args *uap; |
6a6a1e5f KM |
1296 | int *retval; |
1297 | { | |
fc2aed1e KM |
1298 | register struct vnode *vp; |
1299 | struct vattr vattr; | |
1300 | int error; | |
8429d022 | 1301 | struct nameidata nd; |
5485e062 | 1302 | |
dd4c01c2 KM |
1303 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1304 | if (error = namei(&nd)) | |
8429d022 | 1305 | return (error); |
dd4c01c2 | 1306 | vp = nd.ni_vp; |
54fb9dc2 | 1307 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1308 | error = EROFS; |
1309 | goto out; | |
1310 | } | |
3658f091 KB |
1311 | VATTR_NULL(&vattr); |
1312 | vattr.va_mode = uap->fmode & 07777; | |
e62d4143 | 1313 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1314 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1315 | out: |
1316 | vput(vp); | |
8429d022 | 1317 | return (error); |
528f664c | 1318 | } |
f94ceb3b | 1319 | |
4f083fd7 SL |
1320 | /* |
1321 | * Change mode of a file given a file descriptor. | |
1322 | */ | |
9e97623a CT |
1323 | struct fchmod_args { |
1324 | int fd; | |
1325 | int fmode; | |
1326 | }; | |
6a6a1e5f KM |
1327 | /* ARGSUSED */ |
1328 | fchmod(p, uap, retval) | |
5e00df3b | 1329 | struct proc *p; |
9e97623a | 1330 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1331 | int *retval; |
1332 | { | |
fc2aed1e KM |
1333 | struct vattr vattr; |
1334 | struct vnode *vp; | |
1335 | struct file *fp; | |
1336 | int error; | |
1337 | ||
5e00df3b | 1338 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1339 | return (error); |
fc2aed1e KM |
1340 | vp = (struct vnode *)fp->f_data; |
1341 | VOP_LOCK(vp); | |
54fb9dc2 | 1342 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1343 | error = EROFS; |
1344 | goto out; | |
f94ceb3b | 1345 | } |
3658f091 KB |
1346 | VATTR_NULL(&vattr); |
1347 | vattr.va_mode = uap->fmode & 07777; | |
e62d4143 | 1348 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1349 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1350 | out: |
1351 | VOP_UNLOCK(vp); | |
8429d022 | 1352 | return (error); |
5485e062 BJ |
1353 | } |
1354 | ||
4f083fd7 SL |
1355 | /* |
1356 | * Set ownership given a path name. | |
1357 | */ | |
9e97623a CT |
1358 | struct chown_args { |
1359 | char *fname; | |
1360 | int uid; | |
1361 | int gid; | |
1362 | }; | |
6a6a1e5f KM |
1363 | /* ARGSUSED */ |
1364 | chown(p, uap, retval) | |
5e00df3b | 1365 | struct proc *p; |
9e97623a | 1366 | register struct chown_args *uap; |
6a6a1e5f KM |
1367 | int *retval; |
1368 | { | |
fc2aed1e KM |
1369 | register struct vnode *vp; |
1370 | struct vattr vattr; | |
1371 | int error; | |
8429d022 | 1372 | struct nameidata nd; |
d67a03eb | 1373 | |
dd4c01c2 KM |
1374 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1375 | if (error = namei(&nd)) | |
8429d022 | 1376 | return (error); |
dd4c01c2 | 1377 | vp = nd.ni_vp; |
54fb9dc2 | 1378 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1379 | error = EROFS; |
1380 | goto out; | |
1381 | } | |
3658f091 KB |
1382 | VATTR_NULL(&vattr); |
1383 | vattr.va_uid = uap->uid; | |
1384 | vattr.va_gid = uap->gid; | |
e62d4143 | 1385 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1386 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1387 | out: |
1388 | vput(vp); | |
8429d022 | 1389 | return (error); |
528f664c | 1390 | } |
f94ceb3b | 1391 | |
4f083fd7 SL |
1392 | /* |
1393 | * Set ownership given a file descriptor. | |
1394 | */ | |
9e97623a CT |
1395 | struct fchown_args { |
1396 | int fd; | |
1397 | int uid; | |
1398 | int gid; | |
1399 | }; | |
6a6a1e5f KM |
1400 | /* ARGSUSED */ |
1401 | fchown(p, uap, retval) | |
5e00df3b | 1402 | struct proc *p; |
9e97623a | 1403 | register struct fchown_args *uap; |
6a6a1e5f KM |
1404 | int *retval; |
1405 | { | |
fc2aed1e KM |
1406 | struct vattr vattr; |
1407 | struct vnode *vp; | |
1408 | struct file *fp; | |
1409 | int error; | |
1410 | ||
5e00df3b | 1411 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1412 | return (error); |
fc2aed1e KM |
1413 | vp = (struct vnode *)fp->f_data; |
1414 | VOP_LOCK(vp); | |
54fb9dc2 | 1415 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1416 | error = EROFS; |
1417 | goto out; | |
1418 | } | |
3658f091 KB |
1419 | VATTR_NULL(&vattr); |
1420 | vattr.va_uid = uap->uid; | |
1421 | vattr.va_gid = uap->gid; | |
e62d4143 | 1422 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1423 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1424 | out: |
1425 | VOP_UNLOCK(vp); | |
8429d022 | 1426 | return (error); |
d67a03eb BJ |
1427 | } |
1428 | ||
6a6a1e5f KM |
1429 | /* |
1430 | * Set the access and modification times of a file. | |
1431 | */ | |
9e97623a CT |
1432 | struct utimes_args { |
1433 | char *fname; | |
1434 | struct timeval *tptr; | |
1435 | }; | |
6a6a1e5f KM |
1436 | /* ARGSUSED */ |
1437 | utimes(p, uap, retval) | |
5e00df3b | 1438 | struct proc *p; |
9e97623a | 1439 | register struct utimes_args *uap; |
6a6a1e5f KM |
1440 | int *retval; |
1441 | { | |
fc2aed1e | 1442 | register struct vnode *vp; |
bb1b75f4 | 1443 | struct timeval tv[2]; |
fc2aed1e | 1444 | struct vattr vattr; |
8e88b0cd | 1445 | int error; |
8429d022 | 1446 | struct nameidata nd; |
bb1b75f4 | 1447 | |
f8ee9a49 KB |
1448 | VATTR_NULL(&vattr); |
1449 | if (uap->tptr == NULL) { | |
1450 | microtime(&tv[0]); | |
1451 | tv[1] = tv[0]; | |
fcba749b | 1452 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1453 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1454 | return (error); | |
dd4c01c2 KM |
1455 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1456 | if (error = namei(&nd)) | |
8429d022 | 1457 | return (error); |
dd4c01c2 | 1458 | vp = nd.ni_vp; |
54fb9dc2 | 1459 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1460 | error = EROFS; |
1461 | goto out; | |
bb1b75f4 | 1462 | } |
7e11a0c9 KM |
1463 | vattr.va_atime.ts_sec = tv[0].tv_sec; |
1464 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1465 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1466 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
e62d4143 | 1467 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1468 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1469 | out: |
1470 | vput(vp); | |
8429d022 | 1471 | return (error); |
d67a03eb | 1472 | } |
64d3a787 | 1473 | |
9e97623a | 1474 | struct __truncate_args { |
2f2b3b3d CT |
1475 | char *fname; |
1476 | int pad; | |
1477 | off_t length; | |
1478 | }; | |
be320a2b KM |
1479 | |
1480 | /* | |
1481 | * Truncate a file given its path name. | |
1482 | */ | |
1483 | /* ARGSUSED */ | |
ae9b6dc3 | 1484 | __truncate(p, uap, retval) |
5e00df3b | 1485 | struct proc *p; |
9e97623a | 1486 | register struct __truncate_args *uap; |
6a6a1e5f KM |
1487 | int *retval; |
1488 | { | |
fc2aed1e KM |
1489 | register struct vnode *vp; |
1490 | struct vattr vattr; | |
1491 | int error; | |
8429d022 | 1492 | struct nameidata nd; |
528f664c | 1493 | |
dd4c01c2 KM |
1494 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1495 | if (error = namei(&nd)) | |
8429d022 | 1496 | return (error); |
dd4c01c2 | 1497 | vp = nd.ni_vp; |
fc2aed1e KM |
1498 | if (vp->v_type == VDIR) { |
1499 | error = EISDIR; | |
1500 | goto out; | |
528f664c | 1501 | } |
d7b2a16c | 1502 | if ((error = vn_writechk(vp)) || |
2c69fe14 | 1503 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p))) |
fc2aed1e | 1504 | goto out; |
3658f091 KB |
1505 | VATTR_NULL(&vattr); |
1506 | vattr.va_size = uap->length; | |
e62d4143 | 1507 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1508 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1509 | out: |
1510 | vput(vp); | |
8429d022 | 1511 | return (error); |
528f664c SL |
1512 | } |
1513 | ||
9e97623a | 1514 | struct __ftruncate_args { |
2f2b3b3d CT |
1515 | int fd; |
1516 | int pad; | |
1517 | off_t length; | |
1518 | }; | |
1519 | ||
4f083fd7 SL |
1520 | /* |
1521 | * Truncate a file given a file descriptor. | |
1522 | */ | |
6a6a1e5f | 1523 | /* ARGSUSED */ |
ae9b6dc3 | 1524 | __ftruncate(p, uap, retval) |
5e00df3b | 1525 | struct proc *p; |
9e97623a | 1526 | register struct __ftruncate_args *uap; |
6a6a1e5f KM |
1527 | int *retval; |
1528 | { | |
fc2aed1e KM |
1529 | struct vattr vattr; |
1530 | struct vnode *vp; | |
528f664c | 1531 | struct file *fp; |
fc2aed1e KM |
1532 | int error; |
1533 | ||
5e00df3b | 1534 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1535 | return (error); |
fc2aed1e | 1536 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1537 | return (EINVAL); |
fc2aed1e KM |
1538 | vp = (struct vnode *)fp->f_data; |
1539 | VOP_LOCK(vp); | |
1540 | if (vp->v_type == VDIR) { | |
1541 | error = EISDIR; | |
1542 | goto out; | |
528f664c | 1543 | } |
d7b2a16c | 1544 | if (error = vn_writechk(vp)) |
fc2aed1e | 1545 | goto out; |
3658f091 KB |
1546 | VATTR_NULL(&vattr); |
1547 | vattr.va_size = uap->length; | |
e62d4143 | 1548 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1549 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); |
fc2aed1e KM |
1550 | out: |
1551 | VOP_UNLOCK(vp); | |
8429d022 | 1552 | return (error); |
4f083fd7 SL |
1553 | } |
1554 | ||
2f2b3b3d CT |
1555 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1556 | /* | |
1557 | * Truncate a file given its path name. | |
1558 | */ | |
9e97623a CT |
1559 | struct truncate_args { |
1560 | char *fname; | |
1561 | long length; | |
1562 | }; | |
2f2b3b3d CT |
1563 | /* ARGSUSED */ |
1564 | truncate(p, uap, retval) | |
1565 | struct proc *p; | |
9e97623a | 1566 | register struct truncate_args *uap; |
2f2b3b3d CT |
1567 | int *retval; |
1568 | { | |
9e97623a | 1569 | struct __truncate_args nuap; |
2f2b3b3d CT |
1570 | |
1571 | nuap.fname = uap->fname; | |
1572 | nuap.length = uap->length; | |
1573 | return (__truncate(p, &nuap, retval)); | |
1574 | } | |
1575 | ||
1576 | /* | |
1577 | * Truncate a file given a file descriptor. | |
1578 | */ | |
9e97623a CT |
1579 | struct ftruncate_args { |
1580 | int fd; | |
1581 | long length; | |
1582 | }; | |
2f2b3b3d CT |
1583 | /* ARGSUSED */ |
1584 | ftruncate(p, uap, retval) | |
1585 | struct proc *p; | |
9e97623a | 1586 | register struct ftruncate_args *uap; |
2f2b3b3d CT |
1587 | int *retval; |
1588 | { | |
d80c3f56 | 1589 | struct __ftruncate_args nuap; |
2f2b3b3d CT |
1590 | |
1591 | nuap.fd = uap->fd; | |
1592 | nuap.length = uap->length; | |
1593 | return (__ftruncate(p, &nuap, retval)); | |
1594 | } | |
1595 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1596 | ||
4f083fd7 SL |
1597 | /* |
1598 | * Synch an open file. | |
1599 | */ | |
9e97623a CT |
1600 | struct fsync_args { |
1601 | int fd; | |
1602 | }; | |
6a6a1e5f KM |
1603 | /* ARGSUSED */ |
1604 | fsync(p, uap, retval) | |
5e00df3b | 1605 | struct proc *p; |
9e97623a | 1606 | struct fsync_args *uap; |
6a6a1e5f KM |
1607 | int *retval; |
1608 | { | |
e79467ea | 1609 | register struct vnode *vp; |
4f083fd7 | 1610 | struct file *fp; |
fc2aed1e | 1611 | int error; |
4f083fd7 | 1612 | |
5e00df3b | 1613 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1614 | return (error); |
e79467ea KM |
1615 | vp = (struct vnode *)fp->f_data; |
1616 | VOP_LOCK(vp); | |
09d2ef1a | 1617 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1618 | VOP_UNLOCK(vp); |
8429d022 | 1619 | return (error); |
528f664c SL |
1620 | } |
1621 | ||
4f083fd7 SL |
1622 | /* |
1623 | * Rename system call. | |
4f083fd7 SL |
1624 | * |
1625 | * Source and destination must either both be directories, or both | |
1626 | * not be directories. If target is a directory, it must be empty. | |
1627 | */ | |
9e97623a CT |
1628 | struct rename_args { |
1629 | char *from; | |
1630 | char *to; | |
1631 | }; | |
6a6a1e5f KM |
1632 | /* ARGSUSED */ |
1633 | rename(p, uap, retval) | |
5e00df3b | 1634 | struct proc *p; |
9e97623a | 1635 | register struct rename_args *uap; |
6a6a1e5f KM |
1636 | int *retval; |
1637 | { | |
fc2aed1e | 1638 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1639 | struct nameidata fromnd, tond; |
fc2aed1e | 1640 | int error; |
4f083fd7 | 1641 | |
a5368812 | 1642 | CHECKPOINTREF; |
dd4c01c2 KM |
1643 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1644 | uap->from, p); | |
1645 | if (error = namei(&fromnd)) | |
8429d022 | 1646 | return (error); |
5718fad3 | 1647 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1648 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1649 | UIO_USERSPACE, uap->to, p); | |
1650 | if (error = namei(&tond)) { | |
cfef4373 | 1651 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1652 | vrele(fromnd.ni_dvp); |
66955caf KM |
1653 | vrele(fvp); |
1654 | goto out1; | |
1655 | } | |
fc2aed1e KM |
1656 | tdvp = tond.ni_dvp; |
1657 | tvp = tond.ni_vp; | |
1658 | if (tvp != NULL) { | |
1659 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1660 | error = ENOTDIR; |
fc2aed1e KM |
1661 | goto out; |
1662 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1663 | error = EISDIR; |
fc2aed1e | 1664 | goto out; |
a5390dce | 1665 | } |
64d3a787 | 1666 | } |
fe562f32 | 1667 | if (fvp == tdvp) |
fc2aed1e | 1668 | error = EINVAL; |
fe562f32 | 1669 | /* |
5718fad3 KM |
1670 | * If source is the same as the destination (that is the |
1671 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1672 | * then there is nothing to do. |
1673 | */ | |
5718fad3 | 1674 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1675 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1676 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1677 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1678 | error = -1; |
fc2aed1e | 1679 | out: |
66955caf | 1680 | if (!error) { |
e62d4143 KM |
1681 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1682 | if (fromnd.ni_dvp != tdvp) | |
1683 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1684 | if (tvp) | |
1685 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1686 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1687 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1688 | } else { |
cfef4373 | 1689 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1690 | if (tdvp == tvp) |
1691 | vrele(tdvp); | |
1692 | else | |
1693 | vput(tdvp); | |
66955caf KM |
1694 | if (tvp) |
1695 | vput(tvp); | |
cfef4373 | 1696 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1697 | vrele(fromnd.ni_dvp); |
66955caf | 1698 | vrele(fvp); |
64d3a787 | 1699 | } |
c03959f9 | 1700 | p->p_spare[1]--; |
5718fad3 | 1701 | vrele(tond.ni_startdir); |
dd4c01c2 | 1702 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1703 | out1: |
c03959f9 | 1704 | p->p_spare[1]--; |
5718fad3 | 1705 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1706 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1707 | CHECKREFS("rename"); |
fe562f32 | 1708 | if (error == -1) |
8429d022 MK |
1709 | return (0); |
1710 | return (error); | |
64d3a787 | 1711 | } |
88a7a62a | 1712 | |
88a7a62a | 1713 | /* |
d4ed1dcd | 1714 | * Mkdir system call. |
88a7a62a | 1715 | */ |
9e97623a CT |
1716 | struct mkdir_args { |
1717 | char *name; | |
1718 | int dmode; | |
1719 | }; | |
6a6a1e5f KM |
1720 | /* ARGSUSED */ |
1721 | mkdir(p, uap, retval) | |
5e00df3b | 1722 | struct proc *p; |
9e97623a | 1723 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1724 | int *retval; |
1725 | { | |
fc2aed1e KM |
1726 | register struct vnode *vp; |
1727 | struct vattr vattr; | |
1728 | int error; | |
8429d022 | 1729 | struct nameidata nd; |
88a7a62a | 1730 | |
a5368812 | 1731 | CHECKPOINTREF; |
dd4c01c2 KM |
1732 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
1733 | if (error = namei(&nd)) | |
8429d022 | 1734 | return (error); |
dd4c01c2 | 1735 | vp = nd.ni_vp; |
fc2aed1e | 1736 | if (vp != NULL) { |
dd4c01c2 KM |
1737 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1738 | if (nd.ni_dvp == vp) | |
1739 | vrele(nd.ni_dvp); | |
6c44e83b | 1740 | else |
dd4c01c2 | 1741 | vput(nd.ni_dvp); |
66955caf | 1742 | vrele(vp); |
a5368812 | 1743 | CHECKREFS("mkdir1"); |
8429d022 | 1744 | return (EEXIST); |
88a7a62a | 1745 | } |
3ee1461b | 1746 | VATTR_NULL(&vattr); |
fc2aed1e | 1747 | vattr.va_type = VDIR; |
5e00df3b | 1748 | vattr.va_mode = (uap->dmode & 0777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1749 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1750 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1751 | if (!error) |
dd4c01c2 | 1752 | vput(nd.ni_vp); |
a5368812 | 1753 | CHECKREFS("mkdir2"); |
8429d022 | 1754 | return (error); |
88a7a62a SL |
1755 | } |
1756 | ||
1757 | /* | |
1758 | * Rmdir system call. | |
1759 | */ | |
9e97623a CT |
1760 | struct rmdir_args { |
1761 | char *name; | |
1762 | }; | |
6a6a1e5f KM |
1763 | /* ARGSUSED */ |
1764 | rmdir(p, uap, retval) | |
5e00df3b | 1765 | struct proc *p; |
9e97623a | 1766 | struct rmdir_args *uap; |
6a6a1e5f KM |
1767 | int *retval; |
1768 | { | |
fc2aed1e KM |
1769 | register struct vnode *vp; |
1770 | int error; | |
8429d022 | 1771 | struct nameidata nd; |
88a7a62a | 1772 | |
a5368812 | 1773 | CHECKPOINTREF; |
dd4c01c2 KM |
1774 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1775 | if (error = namei(&nd)) | |
8429d022 | 1776 | return (error); |
dd4c01c2 | 1777 | vp = nd.ni_vp; |
fc2aed1e KM |
1778 | if (vp->v_type != VDIR) { |
1779 | error = ENOTDIR; | |
88a7a62a SL |
1780 | goto out; |
1781 | } | |
1782 | /* | |
fc2aed1e | 1783 | * No rmdir "." please. |
88a7a62a | 1784 | */ |
dd4c01c2 | 1785 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1786 | error = EINVAL; |
88a7a62a SL |
1787 | goto out; |
1788 | } | |
1789 | /* | |
d4ed1dcd | 1790 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1791 | */ |
fc2aed1e KM |
1792 | if (vp->v_flag & VROOT) |
1793 | error = EBUSY; | |
88a7a62a | 1794 | out: |
66955caf | 1795 | if (!error) { |
dd4c01c2 | 1796 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1797 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1798 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1799 | } else { |
dd4c01c2 KM |
1800 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1801 | if (nd.ni_dvp == vp) | |
1802 | vrele(nd.ni_dvp); | |
6c44e83b | 1803 | else |
dd4c01c2 | 1804 | vput(nd.ni_dvp); |
66955caf KM |
1805 | vput(vp); |
1806 | } | |
a5368812 | 1807 | CHECKREFS("rmdir"); |
8429d022 | 1808 | return (error); |
88a7a62a SL |
1809 | } |
1810 | ||
3d92fa10 KM |
1811 | #ifdef COMPAT_43 |
1812 | /* | |
1813 | * Read a block of directory entries in a file system independent format. | |
1814 | */ | |
9e97623a CT |
1815 | struct ogetdirentries_args { |
1816 | int fd; | |
1817 | char *buf; | |
1818 | unsigned count; | |
1819 | long *basep; | |
1820 | }; | |
3d92fa10 KM |
1821 | ogetdirentries(p, uap, retval) |
1822 | struct proc *p; | |
9e97623a | 1823 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1824 | int *retval; |
1825 | { | |
3d92fa10 KM |
1826 | register struct vnode *vp; |
1827 | struct file *fp; | |
1828 | struct uio auio, kuio; | |
1829 | struct iovec aiov, kiov; | |
1830 | struct dirent *dp, *edp; | |
1831 | caddr_t dirbuf; | |
1832 | int error, readcnt; | |
d80c3f56 | 1833 | long loff; |
3d92fa10 KM |
1834 | |
1835 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1836 | return (error); | |
1837 | if ((fp->f_flag & FREAD) == 0) | |
1838 | return (EBADF); | |
1839 | vp = (struct vnode *)fp->f_data; | |
1840 | if (vp->v_type != VDIR) | |
1841 | return (EINVAL); | |
1842 | aiov.iov_base = uap->buf; | |
1843 | aiov.iov_len = uap->count; | |
1844 | auio.uio_iov = &aiov; | |
1845 | auio.uio_iovcnt = 1; | |
1846 | auio.uio_rw = UIO_READ; | |
1847 | auio.uio_segflg = UIO_USERSPACE; | |
1848 | auio.uio_procp = p; | |
1849 | auio.uio_resid = uap->count; | |
1850 | VOP_LOCK(vp); | |
d80c3f56 | 1851 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1852 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1853 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1854 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1855 | fp->f_offset = auio.uio_offset; |
1856 | } else | |
3d92fa10 KM |
1857 | # endif |
1858 | { | |
1859 | kuio = auio; | |
1860 | kuio.uio_iov = &kiov; | |
1861 | kuio.uio_segflg = UIO_SYSSPACE; | |
1862 | kiov.iov_len = uap->count; | |
1863 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1864 | kiov.iov_base = dirbuf; | |
1865 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1866 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1867 | if (error == 0) { |
1868 | readcnt = uap->count - kuio.uio_resid; | |
1869 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1870 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1871 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1872 | /* |
30445fe6 KM |
1873 | * The expected low byte of |
1874 | * dp->d_namlen is our dp->d_type. | |
1875 | * The high MBZ byte of dp->d_namlen | |
1876 | * is our dp->d_namlen. | |
d80c3f56 | 1877 | */ |
30445fe6 KM |
1878 | dp->d_type = dp->d_namlen; |
1879 | dp->d_namlen = 0; | |
1880 | # else | |
1881 | /* | |
1882 | * The dp->d_type is the high byte | |
1883 | * of the expected dp->d_namlen, | |
1884 | * so must be zero'ed. | |
1885 | */ | |
1886 | dp->d_type = 0; | |
3d92fa10 KM |
1887 | # endif |
1888 | if (dp->d_reclen > 0) { | |
1889 | dp = (struct dirent *) | |
1890 | ((char *)dp + dp->d_reclen); | |
1891 | } else { | |
1892 | error = EIO; | |
1893 | break; | |
1894 | } | |
1895 | } | |
1896 | if (dp >= edp) | |
1897 | error = uiomove(dirbuf, readcnt, &auio); | |
1898 | } | |
1899 | FREE(dirbuf, M_TEMP); | |
1900 | } | |
3d92fa10 KM |
1901 | VOP_UNLOCK(vp); |
1902 | if (error) | |
1903 | return (error); | |
d80c3f56 | 1904 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1905 | *retval = uap->count - auio.uio_resid; |
1906 | return (error); | |
1907 | } | |
1908 | #endif | |
1909 | ||
fc2aed1e | 1910 | /* |
d4ed1dcd | 1911 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1912 | */ |
9e97623a CT |
1913 | struct getdirentries_args { |
1914 | int fd; | |
1915 | char *buf; | |
1916 | unsigned count; | |
1917 | long *basep; | |
1918 | }; | |
6a6a1e5f | 1919 | getdirentries(p, uap, retval) |
5e00df3b | 1920 | struct proc *p; |
9e97623a | 1921 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1922 | int *retval; |
1923 | { | |
e79467ea | 1924 | register struct vnode *vp; |
8462a185 | 1925 | struct file *fp; |
fc2aed1e KM |
1926 | struct uio auio; |
1927 | struct iovec aiov; | |
d80c3f56 | 1928 | long loff; |
09d2ef1a | 1929 | int error; |
fc2aed1e | 1930 | |
5e00df3b | 1931 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1932 | return (error); |
fc2aed1e | 1933 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1934 | return (EBADF); |
e79467ea | 1935 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1936 | unionread: |
e79467ea | 1937 | if (vp->v_type != VDIR) |
8429d022 | 1938 | return (EINVAL); |
fc2aed1e KM |
1939 | aiov.iov_base = uap->buf; |
1940 | aiov.iov_len = uap->count; | |
1941 | auio.uio_iov = &aiov; | |
1942 | auio.uio_iovcnt = 1; | |
1943 | auio.uio_rw = UIO_READ; | |
1944 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1945 | auio.uio_procp = p; |
fc2aed1e | 1946 | auio.uio_resid = uap->count; |
e79467ea | 1947 | VOP_LOCK(vp); |
d80c3f56 | 1948 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1949 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1950 | fp->f_offset = auio.uio_offset; |
1951 | VOP_UNLOCK(vp); | |
1952 | if (error) | |
8429d022 | 1953 | return (error); |
95a9cadb JSP |
1954 | if ((uap->count == auio.uio_resid) && |
1955 | (vp->v_flag & VROOT) && | |
1956 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1957 | struct vnode *tvp = vp; | |
1958 | vp = vp->v_mount->mnt_vnodecovered; | |
1959 | VREF(vp); | |
1960 | fp->f_data = (caddr_t) vp; | |
1961 | fp->f_offset = 0; | |
1962 | vrele(tvp); | |
1963 | goto unionread; | |
1964 | } | |
d80c3f56 | 1965 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1966 | *retval = uap->count - auio.uio_resid; |
8429d022 | 1967 | return (error); |
88a7a62a SL |
1968 | } |
1969 | ||
1970 | /* | |
d4ed1dcd | 1971 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 1972 | */ |
9e97623a CT |
1973 | struct umask_args { |
1974 | int mask; | |
1975 | }; | |
1976 | mode_t /* XXX */ | |
6a6a1e5f | 1977 | umask(p, uap, retval) |
5e00df3b | 1978 | struct proc *p; |
9e97623a | 1979 | struct umask_args *uap; |
6a6a1e5f KM |
1980 | int *retval; |
1981 | { | |
5e00df3b | 1982 | register struct filedesc *fdp = p->p_fd; |
88a7a62a | 1983 | |
5e00df3b KM |
1984 | *retval = fdp->fd_cmask; |
1985 | fdp->fd_cmask = uap->mask & 07777; | |
8429d022 | 1986 | return (0); |
fc2aed1e KM |
1987 | } |
1988 | ||
b0a98f13 MT |
1989 | /* |
1990 | * Void all references to file by ripping underlying filesystem | |
1991 | * away from vnode. | |
1992 | */ | |
9e97623a CT |
1993 | struct revoke_args { |
1994 | char *fname; | |
1995 | }; | |
6a6a1e5f KM |
1996 | /* ARGSUSED */ |
1997 | revoke(p, uap, retval) | |
5e00df3b | 1998 | struct proc *p; |
9e97623a | 1999 | register struct revoke_args *uap; |
6a6a1e5f KM |
2000 | int *retval; |
2001 | { | |
b0a98f13 MT |
2002 | register struct vnode *vp; |
2003 | struct vattr vattr; | |
2004 | int error; | |
8429d022 | 2005 | struct nameidata nd; |
b0a98f13 | 2006 | |
dd4c01c2 KM |
2007 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
2008 | if (error = namei(&nd)) | |
8429d022 | 2009 | return (error); |
dd4c01c2 | 2010 | vp = nd.ni_vp; |
b0a98f13 MT |
2011 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2012 | error = EINVAL; | |
2013 | goto out; | |
2014 | } | |
2c69fe14 | 2015 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2016 | goto out; |
8429d022 MK |
2017 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2018 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2019 | goto out; |
8b81d198 | 2020 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2021 | vgoneall(vp); |
b0a98f13 MT |
2022 | out: |
2023 | vrele(vp); | |
8429d022 | 2024 | return (error); |
b0a98f13 MT |
2025 | } |
2026 | ||
d4ed1dcd KM |
2027 | /* |
2028 | * Convert a user file descriptor to a kernel file entry. | |
2029 | */ | |
5e00df3b KM |
2030 | getvnode(fdp, fdes, fpp) |
2031 | struct filedesc *fdp; | |
fc2aed1e KM |
2032 | struct file **fpp; |
2033 | int fdes; | |
2034 | { | |
2035 | struct file *fp; | |
2036 | ||
8429d022 | 2037 | if ((unsigned)fdes >= fdp->fd_nfiles || |
78eeb014 | 2038 | (fp = fdp->fd_ofiles[fdes]) == NULL) |
fc2aed1e KM |
2039 | return (EBADF); |
2040 | if (fp->f_type != DTYPE_VNODE) | |
2041 | return (EINVAL); | |
2042 | *fpp = fp; | |
2043 | return (0); | |
88a7a62a | 2044 | } |