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 | * |
dbcf7de6 | 7 | * @(#)vfs_syscalls.c 7.107 (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; |
dbcf7de6 | 863 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
dd4c01c2 | 864 | if (error = namei(&nd)) |
8429d022 | 865 | return (error); |
dd4c01c2 | 866 | vp = nd.ni_vp; |
dbcf7de6 KM |
867 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
868 | VOP_LOCK(vp); | |
fc2aed1e | 869 | if (vp->v_type == VDIR && |
8429d022 | 870 | (error = suser(p->p_ucred, &p->p_acflag))) |
3e78e260 BJ |
871 | goto out; |
872 | /* | |
d4ed1dcd | 873 | * The root of a mounted filesystem cannot be deleted. |
3e78e260 | 874 | */ |
fc2aed1e KM |
875 | if (vp->v_flag & VROOT) { |
876 | error = EBUSY; | |
3e78e260 BJ |
877 | goto out; |
878 | } | |
9db58063 | 879 | (void) vnode_pager_uncache(vp); |
3e78e260 | 880 | out: |
66955caf | 881 | if (!error) { |
dd4c01c2 | 882 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 883 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 884 | } else { |
dd4c01c2 KM |
885 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
886 | if (nd.ni_dvp == vp) | |
887 | vrele(nd.ni_dvp); | |
6c44e83b | 888 | else |
dd4c01c2 | 889 | vput(nd.ni_dvp); |
66955caf KM |
890 | vput(vp); |
891 | } | |
a5368812 | 892 | CHECKREFS("unlink"); |
8429d022 | 893 | return (error); |
3e78e260 BJ |
894 | } |
895 | ||
9e97623a | 896 | struct __lseek_args { |
2f2b3b3d CT |
897 | int fdes; |
898 | int pad; | |
899 | off_t off; | |
900 | int sbase; | |
901 | }; | |
902 | ||
8932276d | 903 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
3e78e260 | 904 | /* |
d4ed1dcd | 905 | * Seek system call. |
3e78e260 | 906 | */ |
9e97623a CT |
907 | struct lseek_args { |
908 | int fdes; | |
909 | long off; | |
910 | int sbase; | |
911 | }; | |
6a6a1e5f | 912 | lseek(p, uap, retval) |
be320a2b | 913 | struct proc *p; |
9e97623a CT |
914 | register struct lseek_args *uap; |
915 | int *retval; | |
be320a2b | 916 | { |
9e97623a | 917 | struct __lseek_args nuap; |
2f2b3b3d | 918 | off_t qret; |
be320a2b KM |
919 | int error; |
920 | ||
921 | nuap.fdes = uap->fdes; | |
922 | nuap.off = uap->off; | |
923 | nuap.sbase = uap->sbase; | |
ae9b6dc3 | 924 | error = __lseek(p, &nuap, &qret); |
9e97623a | 925 | *(long *)retval = qret; |
be320a2b KM |
926 | return (error); |
927 | } | |
8932276d | 928 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
929 | |
930 | /* | |
931 | * Seek system call. | |
932 | */ | |
ae9b6dc3 | 933 | __lseek(p, uap, retval) |
5e00df3b | 934 | struct proc *p; |
9e97623a CT |
935 | register struct __lseek_args *uap; |
936 | int *retval; | |
6a6a1e5f | 937 | { |
8429d022 | 938 | struct ucred *cred = p->p_ucred; |
5e00df3b | 939 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 940 | register struct file *fp; |
fc2aed1e KM |
941 | struct vattr vattr; |
942 | int error; | |
943 | ||
8429d022 | 944 | if ((unsigned)uap->fdes >= fdp->fd_nfiles || |
78eeb014 | 945 | (fp = fdp->fd_ofiles[uap->fdes]) == NULL) |
8429d022 | 946 | return (EBADF); |
fc2aed1e | 947 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 948 | return (ESPIPE); |
b4d1aee9 SL |
949 | switch (uap->sbase) { |
950 | ||
951 | case L_INCR: | |
952 | fp->f_offset += uap->off; | |
953 | break; | |
954 | ||
955 | case L_XTND: | |
fc2aed1e | 956 | if (error = VOP_GETATTR((struct vnode *)fp->f_data, |
2c69fe14 | 957 | &vattr, cred, p)) |
8429d022 | 958 | return (error); |
fc2aed1e | 959 | fp->f_offset = uap->off + vattr.va_size; |
b4d1aee9 SL |
960 | break; |
961 | ||
962 | case L_SET: | |
963 | fp->f_offset = uap->off; | |
964 | break; | |
965 | ||
966 | default: | |
8429d022 | 967 | return (EINVAL); |
b4d1aee9 | 968 | } |
9e97623a | 969 | *(off_t *)retval = fp->f_offset; |
8429d022 | 970 | return (0); |
3e78e260 BJ |
971 | } |
972 | ||
973 | /* | |
d4ed1dcd | 974 | * Check access permissions. |
3e78e260 | 975 | */ |
9e97623a CT |
976 | struct saccess_args { |
977 | char *fname; | |
978 | int fmode; | |
979 | }; | |
6a6a1e5f KM |
980 | /* ARGSUSED */ |
981 | saccess(p, uap, retval) | |
5e00df3b | 982 | struct proc *p; |
9e97623a | 983 | register struct saccess_args *uap; |
6a6a1e5f KM |
984 | int *retval; |
985 | { | |
8429d022 | 986 | register struct ucred *cred = p->p_ucred; |
fc2aed1e KM |
987 | register struct vnode *vp; |
988 | int error, mode, svuid, svgid; | |
8429d022 | 989 | struct nameidata nd; |
3e78e260 | 990 | |
6a6a1e5f KM |
991 | svuid = cred->cr_uid; |
992 | svgid = cred->cr_groups[0]; | |
8429d022 MK |
993 | cred->cr_uid = p->p_cred->p_ruid; |
994 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
dd4c01c2 KM |
995 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
996 | if (error = namei(&nd)) | |
fc2aed1e | 997 | goto out1; |
dd4c01c2 | 998 | vp = nd.ni_vp; |
fc2aed1e KM |
999 | /* |
1000 | * fmode == 0 means only check for exist | |
1001 | */ | |
1002 | if (uap->fmode) { | |
1003 | mode = 0; | |
1004 | if (uap->fmode & R_OK) | |
1005 | mode |= VREAD; | |
1006 | if (uap->fmode & W_OK) | |
1007 | mode |= VWRITE; | |
1008 | if (uap->fmode & X_OK) | |
1009 | mode |= VEXEC; | |
9230ead4 | 1010 | if ((mode & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) |
2c69fe14 | 1011 | error = VOP_ACCESS(vp, mode, cred, p); |
3e78e260 | 1012 | } |
fc2aed1e KM |
1013 | vput(vp); |
1014 | out1: | |
6a6a1e5f KM |
1015 | cred->cr_uid = svuid; |
1016 | cred->cr_groups[0] = svgid; | |
8429d022 | 1017 | return (error); |
3e78e260 | 1018 | } |
d67a03eb | 1019 | |
8932276d | 1020 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1021 | /* |
d4ed1dcd KM |
1022 | * Stat system call. |
1023 | * This version follows links. | |
d67a03eb | 1024 | */ |
9e97623a CT |
1025 | struct ostat_args { |
1026 | char *fname; | |
1027 | struct ostat *ub; | |
1028 | }; | |
6a6a1e5f | 1029 | /* ARGSUSED */ |
ae9b6dc3 | 1030 | ostat(p, uap, retval) |
be320a2b | 1031 | struct proc *p; |
9e97623a | 1032 | register struct ostat_args *uap; |
be320a2b KM |
1033 | int *retval; |
1034 | { | |
1035 | struct stat sb; | |
1036 | struct ostat osb; | |
1037 | int error; | |
1038 | struct nameidata nd; | |
1039 | ||
1040 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1041 | if (error = namei(&nd)) | |
1042 | return (error); | |
1043 | error = vn_stat(nd.ni_vp, &sb, p); | |
1044 | vput(nd.ni_vp); | |
1045 | if (error) | |
1046 | return (error); | |
1047 | cvtstat(&sb, &osb); | |
1048 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1049 | return (error); | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * Lstat system call. | |
1054 | * This version does not follow links. | |
1055 | */ | |
9e97623a CT |
1056 | struct olstat_args { |
1057 | char *fname; | |
1058 | struct ostat *ub; | |
1059 | }; | |
be320a2b | 1060 | /* ARGSUSED */ |
ae9b6dc3 | 1061 | olstat(p, uap, retval) |
be320a2b | 1062 | struct proc *p; |
9e97623a | 1063 | register struct olstat_args *uap; |
be320a2b KM |
1064 | int *retval; |
1065 | { | |
1066 | struct stat sb; | |
1067 | struct ostat osb; | |
1068 | int error; | |
1069 | struct nameidata nd; | |
1070 | ||
1071 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1072 | if (error = namei(&nd)) | |
1073 | return (error); | |
1074 | error = vn_stat(nd.ni_vp, &sb, p); | |
1075 | vput(nd.ni_vp); | |
1076 | if (error) | |
1077 | return (error); | |
1078 | cvtstat(&sb, &osb); | |
1079 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1080 | return (error); | |
1081 | } | |
1082 | ||
1083 | /* | |
1084 | * convert from an old to a new stat structure. | |
1085 | */ | |
1086 | cvtstat(st, ost) | |
1087 | struct stat *st; | |
1088 | struct ostat *ost; | |
1089 | { | |
1090 | ||
1091 | ost->st_dev = st->st_dev; | |
1092 | ost->st_ino = st->st_ino; | |
1093 | ost->st_mode = st->st_mode; | |
1094 | ost->st_nlink = st->st_nlink; | |
1095 | ost->st_uid = st->st_uid; | |
1096 | ost->st_gid = st->st_gid; | |
1097 | ost->st_rdev = st->st_rdev; | |
1098 | if (st->st_size < (quad_t)1 << 32) | |
1099 | ost->st_size = st->st_size; | |
1100 | else | |
1101 | ost->st_size = -2; | |
1102 | ost->st_atime = st->st_atime; | |
1103 | ost->st_mtime = st->st_mtime; | |
1104 | ost->st_ctime = st->st_ctime; | |
1105 | ost->st_blksize = st->st_blksize; | |
1106 | ost->st_blocks = st->st_blocks; | |
1107 | ost->st_flags = st->st_flags; | |
1108 | ost->st_gen = st->st_gen; | |
1109 | } | |
8932276d | 1110 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1111 | |
1112 | /* | |
1113 | * Stat system call. | |
1114 | * This version follows links. | |
1115 | */ | |
9e97623a CT |
1116 | struct stat_args { |
1117 | char *fname; | |
1118 | struct stat *ub; | |
1119 | }; | |
be320a2b | 1120 | /* ARGSUSED */ |
ae9b6dc3 | 1121 | stat(p, uap, retval) |
5e00df3b | 1122 | struct proc *p; |
9e97623a | 1123 | register struct stat_args *uap; |
6a6a1e5f | 1124 | int *retval; |
d67a03eb | 1125 | { |
6a6a1e5f KM |
1126 | struct stat sb; |
1127 | int error; | |
8429d022 | 1128 | struct nameidata nd; |
d67a03eb | 1129 | |
dd4c01c2 KM |
1130 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1131 | if (error = namei(&nd)) | |
8429d022 | 1132 | return (error); |
dd4c01c2 KM |
1133 | error = vn_stat(nd.ni_vp, &sb, p); |
1134 | vput(nd.ni_vp); | |
6a6a1e5f | 1135 | if (error) |
8429d022 | 1136 | return (error); |
6a6a1e5f | 1137 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1138 | return (error); |
d67a03eb BJ |
1139 | } |
1140 | ||
5485e062 | 1141 | /* |
d4ed1dcd KM |
1142 | * Lstat system call. |
1143 | * This version does not follow links. | |
5485e062 | 1144 | */ |
9e97623a CT |
1145 | struct lstat_args { |
1146 | char *fname; | |
1147 | struct stat *ub; | |
1148 | }; | |
6a6a1e5f | 1149 | /* ARGSUSED */ |
ae9b6dc3 | 1150 | lstat(p, uap, retval) |
5e00df3b | 1151 | struct proc *p; |
9e97623a | 1152 | register struct lstat_args *uap; |
6a6a1e5f KM |
1153 | int *retval; |
1154 | { | |
fc2aed1e | 1155 | int error; |
49f762b8 KM |
1156 | struct vnode *vp, *dvp; |
1157 | struct stat sb, sb1; | |
8429d022 | 1158 | struct nameidata nd; |
5485e062 | 1159 | |
49f762b8 KM |
1160 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
1161 | uap->fname, p); | |
dd4c01c2 | 1162 | if (error = namei(&nd)) |
8429d022 | 1163 | return (error); |
49f762b8 KM |
1164 | /* |
1165 | * For symbolic links, always return the attributes of its | |
1166 | * containing directory, except for mode, size, and links. | |
1167 | */ | |
1168 | vp = nd.ni_vp; | |
1169 | dvp = nd.ni_dvp; | |
1170 | if (vp->v_type != VLNK) { | |
1171 | if (dvp == vp) | |
1172 | vrele(dvp); | |
1173 | else | |
1174 | vput(dvp); | |
1175 | error = vn_stat(vp, &sb, p); | |
1176 | vput(vp); | |
1177 | if (error) | |
1178 | return (error); | |
1179 | } else { | |
1180 | error = vn_stat(dvp, &sb, p); | |
1181 | vput(dvp); | |
1182 | if (error) { | |
1183 | vput(vp); | |
1184 | return (error); | |
1185 | } | |
1186 | error = vn_stat(vp, &sb1, p); | |
1187 | vput(vp); | |
1188 | if (error) | |
1189 | return (error); | |
1190 | sb.st_mode &= ~S_IFDIR; | |
1191 | sb.st_mode |= S_IFLNK; | |
1192 | sb.st_nlink = sb1.st_nlink; | |
1193 | sb.st_size = sb1.st_size; | |
1194 | sb.st_blocks = sb1.st_blocks; | |
1195 | } | |
fc2aed1e | 1196 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1197 | return (error); |
d67a03eb BJ |
1198 | } |
1199 | ||
1200 | /* | |
d4ed1dcd | 1201 | * Return target name of a symbolic link. |
5485e062 | 1202 | */ |
9e97623a CT |
1203 | struct readlink_args { |
1204 | char *name; | |
1205 | char *buf; | |
1206 | int count; | |
1207 | }; | |
6a6a1e5f KM |
1208 | /* ARGSUSED */ |
1209 | readlink(p, uap, retval) | |
5e00df3b | 1210 | struct proc *p; |
9e97623a | 1211 | register struct readlink_args *uap; |
6a6a1e5f KM |
1212 | int *retval; |
1213 | { | |
fc2aed1e KM |
1214 | register struct vnode *vp; |
1215 | struct iovec aiov; | |
1216 | struct uio auio; | |
1217 | int error; | |
8429d022 | 1218 | struct nameidata nd; |
5485e062 | 1219 | |
a5368812 | 1220 | CHECKPOINTREF; |
dd4c01c2 KM |
1221 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1222 | if (error = namei(&nd)) | |
8429d022 | 1223 | return (error); |
dd4c01c2 | 1224 | vp = nd.ni_vp; |
fc2aed1e KM |
1225 | if (vp->v_type != VLNK) { |
1226 | error = EINVAL; | |
5485e062 BJ |
1227 | goto out; |
1228 | } | |
fc2aed1e KM |
1229 | aiov.iov_base = uap->buf; |
1230 | aiov.iov_len = uap->count; | |
1231 | auio.uio_iov = &aiov; | |
1232 | auio.uio_iovcnt = 1; | |
1233 | auio.uio_offset = 0; | |
1234 | auio.uio_rw = UIO_READ; | |
1235 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1236 | auio.uio_procp = p; |
fc2aed1e | 1237 | auio.uio_resid = uap->count; |
8429d022 | 1238 | error = VOP_READLINK(vp, &auio, p->p_ucred); |
5485e062 | 1239 | out: |
fc2aed1e | 1240 | vput(vp); |
6a6a1e5f | 1241 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1242 | CHECKREFS("readlink"); |
8429d022 | 1243 | return (error); |
5485e062 BJ |
1244 | } |
1245 | ||
6995a2cb KM |
1246 | /* |
1247 | * Change flags of a file given path name. | |
1248 | */ | |
9e97623a CT |
1249 | struct chflags_args { |
1250 | char *fname; | |
1251 | int flags; | |
1252 | }; | |
6a6a1e5f KM |
1253 | /* ARGSUSED */ |
1254 | chflags(p, uap, retval) | |
5e00df3b | 1255 | struct proc *p; |
9e97623a | 1256 | register struct chflags_args *uap; |
6a6a1e5f KM |
1257 | int *retval; |
1258 | { | |
6995a2cb KM |
1259 | register struct vnode *vp; |
1260 | struct vattr vattr; | |
1261 | int error; | |
8429d022 | 1262 | struct nameidata nd; |
6995a2cb | 1263 | |
dbcf7de6 | 1264 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1265 | if (error = namei(&nd)) |
8429d022 | 1266 | return (error); |
dd4c01c2 | 1267 | vp = nd.ni_vp; |
dbcf7de6 KM |
1268 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1269 | VOP_LOCK(vp); | |
54fb9dc2 | 1270 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1271 | error = EROFS; |
1272 | goto out; | |
1273 | } | |
3658f091 KB |
1274 | VATTR_NULL(&vattr); |
1275 | vattr.va_flags = uap->flags; | |
2c69fe14 | 1276 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1277 | out: |
1278 | vput(vp); | |
8429d022 | 1279 | return (error); |
6995a2cb KM |
1280 | } |
1281 | ||
1282 | /* | |
1283 | * Change flags of a file given a file descriptor. | |
1284 | */ | |
9e97623a CT |
1285 | struct fchflags_args { |
1286 | int fd; | |
1287 | int flags; | |
1288 | }; | |
6a6a1e5f KM |
1289 | /* ARGSUSED */ |
1290 | fchflags(p, uap, retval) | |
5e00df3b | 1291 | struct proc *p; |
9e97623a | 1292 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1293 | int *retval; |
1294 | { | |
6995a2cb KM |
1295 | struct vattr vattr; |
1296 | struct vnode *vp; | |
1297 | struct file *fp; | |
1298 | int error; | |
1299 | ||
5e00df3b | 1300 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1301 | return (error); |
6995a2cb | 1302 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1303 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1304 | VOP_LOCK(vp); |
54fb9dc2 | 1305 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1306 | error = EROFS; |
1307 | goto out; | |
1308 | } | |
3658f091 KB |
1309 | VATTR_NULL(&vattr); |
1310 | vattr.va_flags = uap->flags; | |
2c69fe14 | 1311 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1312 | out: |
1313 | VOP_UNLOCK(vp); | |
8429d022 | 1314 | return (error); |
6995a2cb KM |
1315 | } |
1316 | ||
4f083fd7 SL |
1317 | /* |
1318 | * Change mode of a file given path name. | |
1319 | */ | |
9e97623a CT |
1320 | struct chmod_args { |
1321 | char *fname; | |
1322 | int fmode; | |
1323 | }; | |
6a6a1e5f KM |
1324 | /* ARGSUSED */ |
1325 | chmod(p, uap, retval) | |
5e00df3b | 1326 | struct proc *p; |
9e97623a | 1327 | register struct chmod_args *uap; |
6a6a1e5f KM |
1328 | int *retval; |
1329 | { | |
fc2aed1e KM |
1330 | register struct vnode *vp; |
1331 | struct vattr vattr; | |
1332 | int error; | |
8429d022 | 1333 | struct nameidata nd; |
5485e062 | 1334 | |
dbcf7de6 | 1335 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1336 | if (error = namei(&nd)) |
8429d022 | 1337 | return (error); |
dd4c01c2 | 1338 | vp = nd.ni_vp; |
dbcf7de6 KM |
1339 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1340 | VOP_LOCK(vp); | |
54fb9dc2 | 1341 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1342 | error = EROFS; |
1343 | goto out; | |
1344 | } | |
3658f091 KB |
1345 | VATTR_NULL(&vattr); |
1346 | vattr.va_mode = uap->fmode & 07777; | |
2c69fe14 | 1347 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1348 | out: |
1349 | vput(vp); | |
8429d022 | 1350 | return (error); |
528f664c | 1351 | } |
f94ceb3b | 1352 | |
4f083fd7 SL |
1353 | /* |
1354 | * Change mode of a file given a file descriptor. | |
1355 | */ | |
9e97623a CT |
1356 | struct fchmod_args { |
1357 | int fd; | |
1358 | int fmode; | |
1359 | }; | |
6a6a1e5f KM |
1360 | /* ARGSUSED */ |
1361 | fchmod(p, uap, retval) | |
5e00df3b | 1362 | struct proc *p; |
9e97623a | 1363 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1364 | int *retval; |
1365 | { | |
fc2aed1e KM |
1366 | struct vattr vattr; |
1367 | struct vnode *vp; | |
1368 | struct file *fp; | |
1369 | int error; | |
1370 | ||
5e00df3b | 1371 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1372 | return (error); |
fc2aed1e | 1373 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1374 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1375 | VOP_LOCK(vp); |
54fb9dc2 | 1376 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1377 | error = EROFS; |
1378 | goto out; | |
f94ceb3b | 1379 | } |
3658f091 KB |
1380 | VATTR_NULL(&vattr); |
1381 | vattr.va_mode = uap->fmode & 07777; | |
2c69fe14 | 1382 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1383 | out: |
1384 | VOP_UNLOCK(vp); | |
8429d022 | 1385 | return (error); |
5485e062 BJ |
1386 | } |
1387 | ||
4f083fd7 SL |
1388 | /* |
1389 | * Set ownership given a path name. | |
1390 | */ | |
9e97623a CT |
1391 | struct chown_args { |
1392 | char *fname; | |
1393 | int uid; | |
1394 | int gid; | |
1395 | }; | |
6a6a1e5f KM |
1396 | /* ARGSUSED */ |
1397 | chown(p, uap, retval) | |
5e00df3b | 1398 | struct proc *p; |
9e97623a | 1399 | register struct chown_args *uap; |
6a6a1e5f KM |
1400 | int *retval; |
1401 | { | |
fc2aed1e KM |
1402 | register struct vnode *vp; |
1403 | struct vattr vattr; | |
1404 | int error; | |
8429d022 | 1405 | struct nameidata nd; |
d67a03eb | 1406 | |
dbcf7de6 | 1407 | NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1408 | if (error = namei(&nd)) |
8429d022 | 1409 | return (error); |
dd4c01c2 | 1410 | vp = nd.ni_vp; |
dbcf7de6 KM |
1411 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1412 | VOP_LOCK(vp); | |
54fb9dc2 | 1413 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1414 | error = EROFS; |
1415 | goto out; | |
1416 | } | |
3658f091 KB |
1417 | VATTR_NULL(&vattr); |
1418 | vattr.va_uid = uap->uid; | |
1419 | vattr.va_gid = uap->gid; | |
2c69fe14 | 1420 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1421 | out: |
1422 | vput(vp); | |
8429d022 | 1423 | return (error); |
528f664c | 1424 | } |
f94ceb3b | 1425 | |
4f083fd7 SL |
1426 | /* |
1427 | * Set ownership given a file descriptor. | |
1428 | */ | |
9e97623a CT |
1429 | struct fchown_args { |
1430 | int fd; | |
1431 | int uid; | |
1432 | int gid; | |
1433 | }; | |
6a6a1e5f KM |
1434 | /* ARGSUSED */ |
1435 | fchown(p, uap, retval) | |
5e00df3b | 1436 | struct proc *p; |
9e97623a | 1437 | register struct fchown_args *uap; |
6a6a1e5f KM |
1438 | int *retval; |
1439 | { | |
fc2aed1e KM |
1440 | struct vattr vattr; |
1441 | struct vnode *vp; | |
1442 | struct file *fp; | |
1443 | int error; | |
1444 | ||
5e00df3b | 1445 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1446 | return (error); |
fc2aed1e | 1447 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1448 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1449 | VOP_LOCK(vp); |
54fb9dc2 | 1450 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1451 | error = EROFS; |
1452 | goto out; | |
1453 | } | |
3658f091 KB |
1454 | VATTR_NULL(&vattr); |
1455 | vattr.va_uid = uap->uid; | |
1456 | vattr.va_gid = uap->gid; | |
2c69fe14 | 1457 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1458 | out: |
1459 | VOP_UNLOCK(vp); | |
8429d022 | 1460 | return (error); |
d67a03eb BJ |
1461 | } |
1462 | ||
6a6a1e5f KM |
1463 | /* |
1464 | * Set the access and modification times of a file. | |
1465 | */ | |
9e97623a CT |
1466 | struct utimes_args { |
1467 | char *fname; | |
1468 | struct timeval *tptr; | |
1469 | }; | |
6a6a1e5f KM |
1470 | /* ARGSUSED */ |
1471 | utimes(p, uap, retval) | |
5e00df3b | 1472 | struct proc *p; |
9e97623a | 1473 | register struct utimes_args *uap; |
6a6a1e5f KM |
1474 | int *retval; |
1475 | { | |
fc2aed1e | 1476 | register struct vnode *vp; |
bb1b75f4 | 1477 | struct timeval tv[2]; |
fc2aed1e | 1478 | struct vattr vattr; |
8e88b0cd | 1479 | int error; |
8429d022 | 1480 | struct nameidata nd; |
bb1b75f4 | 1481 | |
f8ee9a49 KB |
1482 | VATTR_NULL(&vattr); |
1483 | if (uap->tptr == NULL) { | |
1484 | microtime(&tv[0]); | |
1485 | tv[1] = tv[0]; | |
fcba749b | 1486 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1487 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1488 | return (error); | |
dbcf7de6 | 1489 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1490 | if (error = namei(&nd)) |
8429d022 | 1491 | return (error); |
dd4c01c2 | 1492 | vp = nd.ni_vp; |
dbcf7de6 KM |
1493 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1494 | VOP_LOCK(vp); | |
54fb9dc2 | 1495 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1496 | error = EROFS; |
1497 | goto out; | |
bb1b75f4 | 1498 | } |
7e11a0c9 KM |
1499 | vattr.va_atime.ts_sec = tv[0].tv_sec; |
1500 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1501 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1502 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
2c69fe14 | 1503 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1504 | out: |
1505 | vput(vp); | |
8429d022 | 1506 | return (error); |
d67a03eb | 1507 | } |
64d3a787 | 1508 | |
9e97623a | 1509 | struct __truncate_args { |
2f2b3b3d CT |
1510 | char *fname; |
1511 | int pad; | |
1512 | off_t length; | |
1513 | }; | |
be320a2b KM |
1514 | |
1515 | /* | |
1516 | * Truncate a file given its path name. | |
1517 | */ | |
1518 | /* ARGSUSED */ | |
ae9b6dc3 | 1519 | __truncate(p, uap, retval) |
5e00df3b | 1520 | struct proc *p; |
9e97623a | 1521 | register struct __truncate_args *uap; |
6a6a1e5f KM |
1522 | int *retval; |
1523 | { | |
fc2aed1e KM |
1524 | register struct vnode *vp; |
1525 | struct vattr vattr; | |
1526 | int error; | |
8429d022 | 1527 | struct nameidata nd; |
528f664c | 1528 | |
dbcf7de6 | 1529 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1530 | if (error = namei(&nd)) |
8429d022 | 1531 | return (error); |
dd4c01c2 | 1532 | vp = nd.ni_vp; |
dbcf7de6 KM |
1533 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1534 | VOP_LOCK(vp); | |
fc2aed1e KM |
1535 | if (vp->v_type == VDIR) { |
1536 | error = EISDIR; | |
1537 | goto out; | |
528f664c | 1538 | } |
d7b2a16c | 1539 | if ((error = vn_writechk(vp)) || |
2c69fe14 | 1540 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p))) |
fc2aed1e | 1541 | goto out; |
3658f091 KB |
1542 | VATTR_NULL(&vattr); |
1543 | vattr.va_size = uap->length; | |
2c69fe14 | 1544 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1545 | out: |
1546 | vput(vp); | |
8429d022 | 1547 | return (error); |
528f664c SL |
1548 | } |
1549 | ||
9e97623a | 1550 | struct __ftruncate_args { |
2f2b3b3d CT |
1551 | int fd; |
1552 | int pad; | |
1553 | off_t length; | |
1554 | }; | |
1555 | ||
4f083fd7 SL |
1556 | /* |
1557 | * Truncate a file given a file descriptor. | |
1558 | */ | |
6a6a1e5f | 1559 | /* ARGSUSED */ |
ae9b6dc3 | 1560 | __ftruncate(p, uap, retval) |
5e00df3b | 1561 | struct proc *p; |
9e97623a | 1562 | register struct __ftruncate_args *uap; |
6a6a1e5f KM |
1563 | int *retval; |
1564 | { | |
fc2aed1e KM |
1565 | struct vattr vattr; |
1566 | struct vnode *vp; | |
528f664c | 1567 | struct file *fp; |
fc2aed1e KM |
1568 | int error; |
1569 | ||
5e00df3b | 1570 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1571 | return (error); |
fc2aed1e | 1572 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1573 | return (EINVAL); |
fc2aed1e | 1574 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1575 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e KM |
1576 | VOP_LOCK(vp); |
1577 | if (vp->v_type == VDIR) { | |
1578 | error = EISDIR; | |
1579 | goto out; | |
528f664c | 1580 | } |
d7b2a16c | 1581 | if (error = vn_writechk(vp)) |
fc2aed1e | 1582 | goto out; |
3658f091 KB |
1583 | VATTR_NULL(&vattr); |
1584 | vattr.va_size = uap->length; | |
2c69fe14 | 1585 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); |
fc2aed1e KM |
1586 | out: |
1587 | VOP_UNLOCK(vp); | |
8429d022 | 1588 | return (error); |
4f083fd7 SL |
1589 | } |
1590 | ||
2f2b3b3d CT |
1591 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1592 | /* | |
1593 | * Truncate a file given its path name. | |
1594 | */ | |
9e97623a CT |
1595 | struct truncate_args { |
1596 | char *fname; | |
1597 | long length; | |
1598 | }; | |
2f2b3b3d CT |
1599 | /* ARGSUSED */ |
1600 | truncate(p, uap, retval) | |
1601 | struct proc *p; | |
9e97623a | 1602 | register struct truncate_args *uap; |
2f2b3b3d CT |
1603 | int *retval; |
1604 | { | |
9e97623a | 1605 | struct __truncate_args nuap; |
2f2b3b3d CT |
1606 | |
1607 | nuap.fname = uap->fname; | |
1608 | nuap.length = uap->length; | |
1609 | return (__truncate(p, &nuap, retval)); | |
1610 | } | |
1611 | ||
1612 | /* | |
1613 | * Truncate a file given a file descriptor. | |
1614 | */ | |
9e97623a CT |
1615 | struct ftruncate_args { |
1616 | int fd; | |
1617 | long length; | |
1618 | }; | |
2f2b3b3d CT |
1619 | /* ARGSUSED */ |
1620 | ftruncate(p, uap, retval) | |
1621 | struct proc *p; | |
9e97623a | 1622 | register struct ftruncate_args *uap; |
2f2b3b3d CT |
1623 | int *retval; |
1624 | { | |
d80c3f56 | 1625 | struct __ftruncate_args nuap; |
2f2b3b3d CT |
1626 | |
1627 | nuap.fd = uap->fd; | |
1628 | nuap.length = uap->length; | |
1629 | return (__ftruncate(p, &nuap, retval)); | |
1630 | } | |
1631 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1632 | ||
4f083fd7 SL |
1633 | /* |
1634 | * Synch an open file. | |
1635 | */ | |
9e97623a CT |
1636 | struct fsync_args { |
1637 | int fd; | |
1638 | }; | |
6a6a1e5f KM |
1639 | /* ARGSUSED */ |
1640 | fsync(p, uap, retval) | |
5e00df3b | 1641 | struct proc *p; |
9e97623a | 1642 | struct fsync_args *uap; |
6a6a1e5f KM |
1643 | int *retval; |
1644 | { | |
e79467ea | 1645 | register struct vnode *vp; |
4f083fd7 | 1646 | struct file *fp; |
fc2aed1e | 1647 | int error; |
4f083fd7 | 1648 | |
5e00df3b | 1649 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1650 | return (error); |
e79467ea KM |
1651 | vp = (struct vnode *)fp->f_data; |
1652 | VOP_LOCK(vp); | |
09d2ef1a | 1653 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1654 | VOP_UNLOCK(vp); |
8429d022 | 1655 | return (error); |
528f664c SL |
1656 | } |
1657 | ||
4f083fd7 SL |
1658 | /* |
1659 | * Rename system call. | |
4f083fd7 SL |
1660 | * |
1661 | * Source and destination must either both be directories, or both | |
1662 | * not be directories. If target is a directory, it must be empty. | |
1663 | */ | |
9e97623a CT |
1664 | struct rename_args { |
1665 | char *from; | |
1666 | char *to; | |
1667 | }; | |
6a6a1e5f KM |
1668 | /* ARGSUSED */ |
1669 | rename(p, uap, retval) | |
5e00df3b | 1670 | struct proc *p; |
9e97623a | 1671 | register struct rename_args *uap; |
6a6a1e5f KM |
1672 | int *retval; |
1673 | { | |
fc2aed1e | 1674 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1675 | struct nameidata fromnd, tond; |
fc2aed1e | 1676 | int error; |
4f083fd7 | 1677 | |
a5368812 | 1678 | CHECKPOINTREF; |
dd4c01c2 KM |
1679 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1680 | uap->from, p); | |
1681 | if (error = namei(&fromnd)) | |
8429d022 | 1682 | return (error); |
5718fad3 | 1683 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1684 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1685 | UIO_USERSPACE, uap->to, p); | |
1686 | if (error = namei(&tond)) { | |
cfef4373 | 1687 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1688 | vrele(fromnd.ni_dvp); |
66955caf KM |
1689 | vrele(fvp); |
1690 | goto out1; | |
1691 | } | |
fc2aed1e KM |
1692 | tdvp = tond.ni_dvp; |
1693 | tvp = tond.ni_vp; | |
1694 | if (tvp != NULL) { | |
1695 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1696 | error = ENOTDIR; |
fc2aed1e KM |
1697 | goto out; |
1698 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1699 | error = EISDIR; |
fc2aed1e | 1700 | goto out; |
a5390dce | 1701 | } |
64d3a787 | 1702 | } |
fe562f32 | 1703 | if (fvp == tdvp) |
fc2aed1e | 1704 | error = EINVAL; |
fe562f32 | 1705 | /* |
5718fad3 KM |
1706 | * If source is the same as the destination (that is the |
1707 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1708 | * then there is nothing to do. |
1709 | */ | |
5718fad3 | 1710 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1711 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1712 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1713 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1714 | error = -1; |
fc2aed1e | 1715 | out: |
66955caf | 1716 | if (!error) { |
e62d4143 KM |
1717 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1718 | if (fromnd.ni_dvp != tdvp) | |
1719 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1720 | if (tvp) | |
1721 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1722 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1723 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1724 | } else { |
cfef4373 | 1725 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1726 | if (tdvp == tvp) |
1727 | vrele(tdvp); | |
1728 | else | |
1729 | vput(tdvp); | |
66955caf KM |
1730 | if (tvp) |
1731 | vput(tvp); | |
cfef4373 | 1732 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1733 | vrele(fromnd.ni_dvp); |
66955caf | 1734 | vrele(fvp); |
64d3a787 | 1735 | } |
c03959f9 | 1736 | p->p_spare[1]--; |
5718fad3 | 1737 | vrele(tond.ni_startdir); |
dd4c01c2 | 1738 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1739 | out1: |
c03959f9 | 1740 | p->p_spare[1]--; |
5718fad3 | 1741 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1742 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1743 | CHECKREFS("rename"); |
fe562f32 | 1744 | if (error == -1) |
8429d022 MK |
1745 | return (0); |
1746 | return (error); | |
64d3a787 | 1747 | } |
88a7a62a | 1748 | |
88a7a62a | 1749 | /* |
d4ed1dcd | 1750 | * Mkdir system call. |
88a7a62a | 1751 | */ |
9e97623a CT |
1752 | struct mkdir_args { |
1753 | char *name; | |
1754 | int dmode; | |
1755 | }; | |
6a6a1e5f KM |
1756 | /* ARGSUSED */ |
1757 | mkdir(p, uap, retval) | |
5e00df3b | 1758 | struct proc *p; |
9e97623a | 1759 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1760 | int *retval; |
1761 | { | |
fc2aed1e KM |
1762 | register struct vnode *vp; |
1763 | struct vattr vattr; | |
1764 | int error; | |
8429d022 | 1765 | struct nameidata nd; |
88a7a62a | 1766 | |
a5368812 | 1767 | CHECKPOINTREF; |
dd4c01c2 KM |
1768 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
1769 | if (error = namei(&nd)) | |
8429d022 | 1770 | return (error); |
dd4c01c2 | 1771 | vp = nd.ni_vp; |
fc2aed1e | 1772 | if (vp != NULL) { |
dd4c01c2 KM |
1773 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1774 | if (nd.ni_dvp == vp) | |
1775 | vrele(nd.ni_dvp); | |
6c44e83b | 1776 | else |
dd4c01c2 | 1777 | vput(nd.ni_dvp); |
66955caf | 1778 | vrele(vp); |
a5368812 | 1779 | CHECKREFS("mkdir1"); |
8429d022 | 1780 | return (EEXIST); |
88a7a62a | 1781 | } |
3ee1461b | 1782 | VATTR_NULL(&vattr); |
fc2aed1e | 1783 | vattr.va_type = VDIR; |
5e00df3b | 1784 | vattr.va_mode = (uap->dmode & 0777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1785 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1786 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1787 | if (!error) |
dd4c01c2 | 1788 | vput(nd.ni_vp); |
a5368812 | 1789 | CHECKREFS("mkdir2"); |
8429d022 | 1790 | return (error); |
88a7a62a SL |
1791 | } |
1792 | ||
1793 | /* | |
1794 | * Rmdir system call. | |
1795 | */ | |
9e97623a CT |
1796 | struct rmdir_args { |
1797 | char *name; | |
1798 | }; | |
6a6a1e5f KM |
1799 | /* ARGSUSED */ |
1800 | rmdir(p, uap, retval) | |
5e00df3b | 1801 | struct proc *p; |
9e97623a | 1802 | struct rmdir_args *uap; |
6a6a1e5f KM |
1803 | int *retval; |
1804 | { | |
fc2aed1e KM |
1805 | register struct vnode *vp; |
1806 | int error; | |
8429d022 | 1807 | struct nameidata nd; |
88a7a62a | 1808 | |
a5368812 | 1809 | CHECKPOINTREF; |
dd4c01c2 KM |
1810 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1811 | if (error = namei(&nd)) | |
8429d022 | 1812 | return (error); |
dd4c01c2 | 1813 | vp = nd.ni_vp; |
fc2aed1e KM |
1814 | if (vp->v_type != VDIR) { |
1815 | error = ENOTDIR; | |
88a7a62a SL |
1816 | goto out; |
1817 | } | |
1818 | /* | |
fc2aed1e | 1819 | * No rmdir "." please. |
88a7a62a | 1820 | */ |
dd4c01c2 | 1821 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1822 | error = EINVAL; |
88a7a62a SL |
1823 | goto out; |
1824 | } | |
1825 | /* | |
d4ed1dcd | 1826 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1827 | */ |
fc2aed1e KM |
1828 | if (vp->v_flag & VROOT) |
1829 | error = EBUSY; | |
88a7a62a | 1830 | out: |
66955caf | 1831 | if (!error) { |
dd4c01c2 | 1832 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1833 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1834 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1835 | } else { |
dd4c01c2 KM |
1836 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1837 | if (nd.ni_dvp == vp) | |
1838 | vrele(nd.ni_dvp); | |
6c44e83b | 1839 | else |
dd4c01c2 | 1840 | vput(nd.ni_dvp); |
66955caf KM |
1841 | vput(vp); |
1842 | } | |
a5368812 | 1843 | CHECKREFS("rmdir"); |
8429d022 | 1844 | return (error); |
88a7a62a SL |
1845 | } |
1846 | ||
3d92fa10 KM |
1847 | #ifdef COMPAT_43 |
1848 | /* | |
1849 | * Read a block of directory entries in a file system independent format. | |
1850 | */ | |
9e97623a CT |
1851 | struct ogetdirentries_args { |
1852 | int fd; | |
1853 | char *buf; | |
1854 | unsigned count; | |
1855 | long *basep; | |
1856 | }; | |
3d92fa10 KM |
1857 | ogetdirentries(p, uap, retval) |
1858 | struct proc *p; | |
9e97623a | 1859 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1860 | int *retval; |
1861 | { | |
3d92fa10 KM |
1862 | register struct vnode *vp; |
1863 | struct file *fp; | |
1864 | struct uio auio, kuio; | |
1865 | struct iovec aiov, kiov; | |
1866 | struct dirent *dp, *edp; | |
1867 | caddr_t dirbuf; | |
1868 | int error, readcnt; | |
d80c3f56 | 1869 | long loff; |
3d92fa10 KM |
1870 | |
1871 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1872 | return (error); | |
1873 | if ((fp->f_flag & FREAD) == 0) | |
1874 | return (EBADF); | |
1875 | vp = (struct vnode *)fp->f_data; | |
1876 | if (vp->v_type != VDIR) | |
1877 | return (EINVAL); | |
1878 | aiov.iov_base = uap->buf; | |
1879 | aiov.iov_len = uap->count; | |
1880 | auio.uio_iov = &aiov; | |
1881 | auio.uio_iovcnt = 1; | |
1882 | auio.uio_rw = UIO_READ; | |
1883 | auio.uio_segflg = UIO_USERSPACE; | |
1884 | auio.uio_procp = p; | |
1885 | auio.uio_resid = uap->count; | |
1886 | VOP_LOCK(vp); | |
d80c3f56 | 1887 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1888 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1889 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1890 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1891 | fp->f_offset = auio.uio_offset; |
1892 | } else | |
3d92fa10 KM |
1893 | # endif |
1894 | { | |
1895 | kuio = auio; | |
1896 | kuio.uio_iov = &kiov; | |
1897 | kuio.uio_segflg = UIO_SYSSPACE; | |
1898 | kiov.iov_len = uap->count; | |
1899 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1900 | kiov.iov_base = dirbuf; | |
1901 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1902 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1903 | if (error == 0) { |
1904 | readcnt = uap->count - kuio.uio_resid; | |
1905 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1906 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1907 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1908 | /* |
30445fe6 KM |
1909 | * The expected low byte of |
1910 | * dp->d_namlen is our dp->d_type. | |
1911 | * The high MBZ byte of dp->d_namlen | |
1912 | * is our dp->d_namlen. | |
d80c3f56 | 1913 | */ |
30445fe6 KM |
1914 | dp->d_type = dp->d_namlen; |
1915 | dp->d_namlen = 0; | |
1916 | # else | |
1917 | /* | |
1918 | * The dp->d_type is the high byte | |
1919 | * of the expected dp->d_namlen, | |
1920 | * so must be zero'ed. | |
1921 | */ | |
1922 | dp->d_type = 0; | |
3d92fa10 KM |
1923 | # endif |
1924 | if (dp->d_reclen > 0) { | |
1925 | dp = (struct dirent *) | |
1926 | ((char *)dp + dp->d_reclen); | |
1927 | } else { | |
1928 | error = EIO; | |
1929 | break; | |
1930 | } | |
1931 | } | |
1932 | if (dp >= edp) | |
1933 | error = uiomove(dirbuf, readcnt, &auio); | |
1934 | } | |
1935 | FREE(dirbuf, M_TEMP); | |
1936 | } | |
3d92fa10 KM |
1937 | VOP_UNLOCK(vp); |
1938 | if (error) | |
1939 | return (error); | |
d80c3f56 | 1940 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1941 | *retval = uap->count - auio.uio_resid; |
1942 | return (error); | |
1943 | } | |
1944 | #endif | |
1945 | ||
fc2aed1e | 1946 | /* |
d4ed1dcd | 1947 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1948 | */ |
9e97623a CT |
1949 | struct getdirentries_args { |
1950 | int fd; | |
1951 | char *buf; | |
1952 | unsigned count; | |
1953 | long *basep; | |
1954 | }; | |
6a6a1e5f | 1955 | getdirentries(p, uap, retval) |
5e00df3b | 1956 | struct proc *p; |
9e97623a | 1957 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1958 | int *retval; |
1959 | { | |
e79467ea | 1960 | register struct vnode *vp; |
8462a185 | 1961 | struct file *fp; |
fc2aed1e KM |
1962 | struct uio auio; |
1963 | struct iovec aiov; | |
d80c3f56 | 1964 | long loff; |
09d2ef1a | 1965 | int error; |
fc2aed1e | 1966 | |
5e00df3b | 1967 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1968 | return (error); |
fc2aed1e | 1969 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1970 | return (EBADF); |
e79467ea | 1971 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1972 | unionread: |
e79467ea | 1973 | if (vp->v_type != VDIR) |
8429d022 | 1974 | return (EINVAL); |
fc2aed1e KM |
1975 | aiov.iov_base = uap->buf; |
1976 | aiov.iov_len = uap->count; | |
1977 | auio.uio_iov = &aiov; | |
1978 | auio.uio_iovcnt = 1; | |
1979 | auio.uio_rw = UIO_READ; | |
1980 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1981 | auio.uio_procp = p; |
fc2aed1e | 1982 | auio.uio_resid = uap->count; |
e79467ea | 1983 | VOP_LOCK(vp); |
d80c3f56 | 1984 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1985 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1986 | fp->f_offset = auio.uio_offset; |
1987 | VOP_UNLOCK(vp); | |
1988 | if (error) | |
8429d022 | 1989 | return (error); |
95a9cadb JSP |
1990 | if ((uap->count == auio.uio_resid) && |
1991 | (vp->v_flag & VROOT) && | |
1992 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1993 | struct vnode *tvp = vp; | |
1994 | vp = vp->v_mount->mnt_vnodecovered; | |
1995 | VREF(vp); | |
1996 | fp->f_data = (caddr_t) vp; | |
1997 | fp->f_offset = 0; | |
1998 | vrele(tvp); | |
1999 | goto unionread; | |
2000 | } | |
d80c3f56 | 2001 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 2002 | *retval = uap->count - auio.uio_resid; |
8429d022 | 2003 | return (error); |
88a7a62a SL |
2004 | } |
2005 | ||
2006 | /* | |
d4ed1dcd | 2007 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 2008 | */ |
9e97623a CT |
2009 | struct umask_args { |
2010 | int mask; | |
2011 | }; | |
2012 | mode_t /* XXX */ | |
6a6a1e5f | 2013 | umask(p, uap, retval) |
5e00df3b | 2014 | struct proc *p; |
9e97623a | 2015 | struct umask_args *uap; |
6a6a1e5f KM |
2016 | int *retval; |
2017 | { | |
5e00df3b | 2018 | register struct filedesc *fdp = p->p_fd; |
88a7a62a | 2019 | |
5e00df3b KM |
2020 | *retval = fdp->fd_cmask; |
2021 | fdp->fd_cmask = uap->mask & 07777; | |
8429d022 | 2022 | return (0); |
fc2aed1e KM |
2023 | } |
2024 | ||
b0a98f13 MT |
2025 | /* |
2026 | * Void all references to file by ripping underlying filesystem | |
2027 | * away from vnode. | |
2028 | */ | |
9e97623a CT |
2029 | struct revoke_args { |
2030 | char *fname; | |
2031 | }; | |
6a6a1e5f KM |
2032 | /* ARGSUSED */ |
2033 | revoke(p, uap, retval) | |
5e00df3b | 2034 | struct proc *p; |
9e97623a | 2035 | register struct revoke_args *uap; |
6a6a1e5f KM |
2036 | int *retval; |
2037 | { | |
b0a98f13 MT |
2038 | register struct vnode *vp; |
2039 | struct vattr vattr; | |
2040 | int error; | |
8429d022 | 2041 | struct nameidata nd; |
b0a98f13 | 2042 | |
dd4c01c2 KM |
2043 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
2044 | if (error = namei(&nd)) | |
8429d022 | 2045 | return (error); |
dd4c01c2 | 2046 | vp = nd.ni_vp; |
b0a98f13 MT |
2047 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2048 | error = EINVAL; | |
2049 | goto out; | |
2050 | } | |
2c69fe14 | 2051 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2052 | goto out; |
8429d022 MK |
2053 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2054 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2055 | goto out; |
8b81d198 | 2056 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2057 | vgoneall(vp); |
b0a98f13 MT |
2058 | out: |
2059 | vrele(vp); | |
8429d022 | 2060 | return (error); |
b0a98f13 MT |
2061 | } |
2062 | ||
d4ed1dcd KM |
2063 | /* |
2064 | * Convert a user file descriptor to a kernel file entry. | |
2065 | */ | |
5e00df3b KM |
2066 | getvnode(fdp, fdes, fpp) |
2067 | struct filedesc *fdp; | |
fc2aed1e KM |
2068 | struct file **fpp; |
2069 | int fdes; | |
2070 | { | |
2071 | struct file *fp; | |
2072 | ||
8429d022 | 2073 | if ((unsigned)fdes >= fdp->fd_nfiles || |
78eeb014 | 2074 | (fp = fdp->fd_ofiles[fdes]) == NULL) |
fc2aed1e KM |
2075 | return (EBADF); |
2076 | if (fp->f_type != DTYPE_VNODE) | |
2077 | return (EINVAL); | |
2078 | *fpp = fp; | |
2079 | return (0); | |
88a7a62a | 2080 | } |