Commit | Line | Data |
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da7c5cc6 | 1 | /* |
47a73614 KB |
2 | * Copyright (c) 1989, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
da7c5cc6 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
fc2aed1e | 6 | * |
cf5ef508 | 7 | * @(#)vfs_syscalls.c 8.3 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
38a01dbe KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/namei.h> | |
13 | #include <sys/filedesc.h> | |
14 | #include <sys/kernel.h> | |
15 | #include <sys/file.h> | |
16 | #include <sys/stat.h> | |
17 | #include <sys/vnode.h> | |
18 | #include <sys/mount.h> | |
19 | #include <sys/proc.h> | |
20 | #include <sys/uio.h> | |
21 | #include <sys/malloc.h> | |
22 | #include <sys/dirent.h> | |
23 | ||
be320a2b | 24 | #include <vm/vm.h> |
6aecdd4c | 25 | #include <sys/sysctl.h> |
88a7a62a | 26 | |
7121fdf0 KB |
27 | static int change_dir __P((struct nameidata *ndp, struct proc *p)); |
28 | ||
a5368812 KM |
29 | #ifdef REF_DIAGNOSTIC |
30 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
31 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
32 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
33 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
34 | #else | |
35 | #define CHECKPOINTREF | |
36 | #define CHECKREFS(D) | |
37 | #endif | |
38 | ||
fc2aed1e KM |
39 | /* |
40 | * Virtual File System System Calls | |
41 | */ | |
3e78e260 | 42 | |
4f083fd7 | 43 | /* |
7121fdf0 | 44 | * Mount a file system. |
4f083fd7 | 45 | */ |
9e97623a CT |
46 | struct mount_args { |
47 | int type; | |
7121fdf0 | 48 | char *path; |
9e97623a CT |
49 | int flags; |
50 | caddr_t data; | |
51 | }; | |
6a6a1e5f KM |
52 | /* ARGSUSED */ |
53 | mount(p, uap, retval) | |
5e00df3b | 54 | struct proc *p; |
9e97623a | 55 | register struct mount_args *uap; |
6a6a1e5f KM |
56 | int *retval; |
57 | { | |
d48157d5 KM |
58 | register struct vnode *vp; |
59 | register struct mount *mp; | |
47971887 | 60 | int error, flag; |
8429d022 | 61 | struct nameidata nd; |
3e78e260 | 62 | |
fc2aed1e KM |
63 | /* |
64 | * Must be super user | |
65 | */ | |
8429d022 MK |
66 | if (error = suser(p->p_ucred, &p->p_acflag)) |
67 | return (error); | |
fc2aed1e KM |
68 | /* |
69 | * Get vnode to be covered | |
70 | */ | |
7121fdf0 | 71 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 72 | if (error = namei(&nd)) |
8429d022 | 73 | return (error); |
dd4c01c2 | 74 | vp = nd.ni_vp; |
54fb9dc2 | 75 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
76 | if ((vp->v_flag & VROOT) == 0) { |
77 | vput(vp); | |
8429d022 | 78 | return (EINVAL); |
d48157d5 KM |
79 | } |
80 | mp = vp->v_mount; | |
db62a40f | 81 | flag = mp->mnt_flag; |
d48157d5 | 82 | /* |
db62a40f KM |
83 | * We only allow the filesystem to be reloaded if it |
84 | * is currently mounted read-only. | |
d48157d5 | 85 | */ |
db62a40f KM |
86 | if ((uap->flags & MNT_RELOAD) && |
87 | ((mp->mnt_flag & MNT_RDONLY) == 0)) { | |
d48157d5 | 88 | vput(vp); |
8429d022 | 89 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 90 | } |
db62a40f KM |
91 | mp->mnt_flag |= |
92 | uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); | |
d48157d5 KM |
93 | VOP_UNLOCK(vp); |
94 | goto update; | |
95 | } | |
95a9cadb | 96 | if (vp->v_usecount != 1 && (uap->flags & MNT_UNION) == 0) { |
fc2aed1e | 97 | vput(vp); |
8429d022 | 98 | return (EBUSY); |
fc2aed1e | 99 | } |
c05286bd | 100 | if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) |
09d2ef1a | 101 | return (error); |
fc2aed1e KM |
102 | if (vp->v_type != VDIR) { |
103 | vput(vp); | |
8429d022 | 104 | return (ENOTDIR); |
fc2aed1e | 105 | } |
7121fdf0 | 106 | if ((u_long)uap->type > MOUNT_MAXTYPE || vfssw[uap->type] == NULL) { |
fc2aed1e | 107 | vput(vp); |
8429d022 | 108 | return (ENODEV); |
fc2aed1e KM |
109 | } |
110 | ||
111 | /* | |
d48157d5 | 112 | * Allocate and initialize the file system. |
fc2aed1e KM |
113 | */ |
114 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
115 | M_MOUNT, M_WAITOK); | |
b1341251 | 116 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 117 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
118 | if (error = vfs_lock(mp)) { |
119 | free((caddr_t)mp, M_MOUNT); | |
120 | vput(vp); | |
8429d022 | 121 | return (error); |
d48157d5 | 122 | } |
7121fdf0 | 123 | if (vp->v_mountedhere != NULL) { |
d48157d5 KM |
124 | vfs_unlock(mp); |
125 | free((caddr_t)mp, M_MOUNT); | |
126 | vput(vp); | |
8429d022 | 127 | return (EBUSY); |
d48157d5 | 128 | } |
d48157d5 | 129 | vp->v_mountedhere = mp; |
54fb9dc2 | 130 | mp->mnt_vnodecovered = vp; |
d48157d5 KM |
131 | update: |
132 | /* | |
133 | * Set the mount level flags. | |
134 | */ | |
54fb9dc2 KM |
135 | if (uap->flags & MNT_RDONLY) |
136 | mp->mnt_flag |= MNT_RDONLY; | |
db62a40f KM |
137 | else if (mp->mnt_flag & MNT_RDONLY) |
138 | mp->mnt_flag |= MNT_WANTRDWR; | |
139 | mp->mnt_flag &=~ | |
140 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
141 | mp->mnt_flag |= uap->flags & | |
142 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
d48157d5 KM |
143 | /* |
144 | * Mount the filesystem. | |
145 | */ | |
7121fdf0 | 146 | error = VFS_MOUNT(mp, uap->path, uap->data, &nd, p); |
54fb9dc2 | 147 | if (mp->mnt_flag & MNT_UPDATE) { |
d48157d5 | 148 | vrele(vp); |
db62a40f KM |
149 | if (mp->mnt_flag & MNT_WANTRDWR) |
150 | mp->mnt_flag &= ~MNT_RDONLY; | |
151 | mp->mnt_flag &=~ | |
152 | (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); | |
47971887 | 153 | if (error) |
54fb9dc2 | 154 | mp->mnt_flag = flag; |
8429d022 | 155 | return (error); |
d48157d5 | 156 | } |
92d0de98 KM |
157 | /* |
158 | * Put the new filesystem on the mount list after root. | |
159 | */ | |
54fb9dc2 KM |
160 | mp->mnt_next = rootfs->mnt_next; |
161 | mp->mnt_prev = rootfs; | |
162 | rootfs->mnt_next = mp; | |
163 | mp->mnt_next->mnt_prev = mp; | |
fc2aed1e | 164 | cache_purge(vp); |
fc2aed1e | 165 | if (!error) { |
d48157d5 | 166 | VOP_UNLOCK(vp); |
fc2aed1e | 167 | vfs_unlock(mp); |
2c69fe14 | 168 | error = VFS_START(mp, 0, p); |
fc2aed1e KM |
169 | } else { |
170 | vfs_remove(mp); | |
171 | free((caddr_t)mp, M_MOUNT); | |
d48157d5 | 172 | vput(vp); |
fc2aed1e | 173 | } |
8429d022 | 174 | return (error); |
3e78e260 BJ |
175 | } |
176 | ||
4f083fd7 | 177 | /* |
7121fdf0 | 178 | * Unmount a file system. |
fc2aed1e KM |
179 | * |
180 | * Note: unmount takes a path to the vnode mounted on as argument, | |
181 | * not special file (as before). | |
4f083fd7 | 182 | */ |
9e97623a | 183 | struct unmount_args { |
7121fdf0 | 184 | char *path; |
9e97623a CT |
185 | int flags; |
186 | }; | |
6a6a1e5f KM |
187 | /* ARGSUSED */ |
188 | unmount(p, uap, retval) | |
5e00df3b | 189 | struct proc *p; |
9e97623a | 190 | register struct unmount_args *uap; |
6a6a1e5f KM |
191 | int *retval; |
192 | { | |
fc2aed1e | 193 | register struct vnode *vp; |
9151110e | 194 | struct mount *mp; |
fc2aed1e | 195 | int error; |
8429d022 | 196 | struct nameidata nd; |
fc2aed1e KM |
197 | |
198 | /* | |
199 | * Must be super user | |
200 | */ | |
8429d022 MK |
201 | if (error = suser(p->p_ucred, &p->p_acflag)) |
202 | return (error); | |
fc2aed1e | 203 | |
7121fdf0 | 204 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 205 | if (error = namei(&nd)) |
8429d022 | 206 | return (error); |
dd4c01c2 | 207 | vp = nd.ni_vp; |
fc2aed1e KM |
208 | /* |
209 | * Must be the root of the filesystem | |
210 | */ | |
211 | if ((vp->v_flag & VROOT) == 0) { | |
212 | vput(vp); | |
8429d022 | 213 | return (EINVAL); |
fc2aed1e KM |
214 | } |
215 | mp = vp->v_mount; | |
216 | vput(vp); | |
2c69fe14 | 217 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
218 | } |
219 | ||
220 | /* | |
7121fdf0 | 221 | * Do the actual file system unmount. |
9151110e | 222 | */ |
2c69fe14 | 223 | dounmount(mp, flags, p) |
9151110e KM |
224 | register struct mount *mp; |
225 | int flags; | |
2c69fe14 | 226 | struct proc *p; |
9151110e KM |
227 | { |
228 | struct vnode *coveredvp; | |
229 | int error; | |
230 | ||
54fb9dc2 | 231 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
232 | if (vfs_busy(mp)) |
233 | return (EBUSY); | |
54fb9dc2 | 234 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 235 | if (error = vfs_lock(mp)) |
9151110e | 236 | return (error); |
fc2aed1e | 237 | |
9db58063 | 238 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 239 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
240 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
241 | (flags & MNT_FORCE)) | |
2c69fe14 | 242 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 243 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 244 | vfs_unbusy(mp); |
fc2aed1e KM |
245 | if (error) { |
246 | vfs_unlock(mp); | |
247 | } else { | |
248 | vrele(coveredvp); | |
249 | vfs_remove(mp); | |
ea2761aa KM |
250 | if (mp->mnt_mounth != NULL) |
251 | panic("unmount: dangling vnode"); | |
fc2aed1e KM |
252 | free((caddr_t)mp, M_MOUNT); |
253 | } | |
9151110e | 254 | return (error); |
fc2aed1e KM |
255 | } |
256 | ||
257 | /* | |
fc2aed1e KM |
258 | * Sync each mounted filesystem. |
259 | */ | |
0649728d KM |
260 | #ifdef DIAGNOSTIC |
261 | int syncprt = 0; | |
6aecdd4c | 262 | struct ctldebug debug0 = { "syncprt", &syncprt }; |
0649728d KM |
263 | #endif |
264 | ||
9e97623a CT |
265 | struct sync_args { |
266 | int dummy; | |
267 | }; | |
ff4fb102 | 268 | /* ARGSUSED */ |
6a6a1e5f | 269 | sync(p, uap, retval) |
5e00df3b | 270 | struct proc *p; |
9e97623a | 271 | struct sync_args *uap; |
6a6a1e5f | 272 | int *retval; |
3e78e260 | 273 | { |
fc2aed1e | 274 | register struct mount *mp; |
c001b1c3 | 275 | struct mount *omp; |
fc2aed1e KM |
276 | |
277 | mp = rootfs; | |
278 | do { | |
62e35d50 KM |
279 | /* |
280 | * The lock check below is to avoid races with mount | |
281 | * and unmount. | |
282 | */ | |
54fb9dc2 | 283 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 284 | !vfs_busy(mp)) { |
09d2ef1a | 285 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
c001b1c3 | 286 | omp = mp; |
54fb9dc2 | 287 | mp = mp->mnt_next; |
c001b1c3 KM |
288 | vfs_unbusy(omp); |
289 | } else | |
54fb9dc2 | 290 | mp = mp->mnt_next; |
fc2aed1e | 291 | } while (mp != rootfs); |
0649728d KM |
292 | #ifdef DIAGNOSTIC |
293 | if (syncprt) | |
294 | vfs_bufstats(); | |
295 | #endif /* DIAGNOSTIC */ | |
78eeb014 | 296 | return (0); |
fc2aed1e KM |
297 | } |
298 | ||
c001b1c3 | 299 | /* |
7121fdf0 | 300 | * Change filesystem quotas. |
c001b1c3 | 301 | */ |
9e97623a CT |
302 | struct quotactl_args { |
303 | char *path; | |
304 | int cmd; | |
305 | int uid; | |
306 | caddr_t arg; | |
307 | }; | |
6a6a1e5f KM |
308 | /* ARGSUSED */ |
309 | quotactl(p, uap, retval) | |
5e00df3b | 310 | struct proc *p; |
9e97623a | 311 | register struct quotactl_args *uap; |
6a6a1e5f KM |
312 | int *retval; |
313 | { | |
c001b1c3 | 314 | register struct mount *mp; |
c001b1c3 | 315 | int error; |
8429d022 | 316 | struct nameidata nd; |
c001b1c3 | 317 | |
dd4c01c2 KM |
318 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
319 | if (error = namei(&nd)) | |
8429d022 | 320 | return (error); |
dd4c01c2 KM |
321 | mp = nd.ni_vp->v_mount; |
322 | vrele(nd.ni_vp); | |
2c69fe14 | 323 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
324 | } |
325 | ||
fc2aed1e | 326 | /* |
d4ed1dcd | 327 | * Get filesystem statistics. |
fc2aed1e | 328 | */ |
9e97623a CT |
329 | struct statfs_args { |
330 | char *path; | |
331 | struct statfs *buf; | |
332 | }; | |
6a6a1e5f KM |
333 | /* ARGSUSED */ |
334 | statfs(p, uap, retval) | |
5e00df3b | 335 | struct proc *p; |
9e97623a | 336 | register struct statfs_args *uap; |
6a6a1e5f KM |
337 | int *retval; |
338 | { | |
3f705640 | 339 | register struct mount *mp; |
62e35d50 | 340 | register struct statfs *sp; |
fc2aed1e | 341 | int error; |
8429d022 | 342 | struct nameidata nd; |
3e78e260 | 343 | |
dd4c01c2 KM |
344 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
345 | if (error = namei(&nd)) | |
8429d022 | 346 | return (error); |
dd4c01c2 | 347 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 348 | sp = &mp->mnt_stat; |
dd4c01c2 | 349 | vrele(nd.ni_vp); |
2c69fe14 | 350 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 351 | return (error); |
54fb9dc2 | 352 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 353 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
354 | } |
355 | ||
6a6a1e5f | 356 | /* |
d4ed1dcd | 357 | * Get filesystem statistics. |
6a6a1e5f | 358 | */ |
9e97623a CT |
359 | struct fstatfs_args { |
360 | int fd; | |
361 | struct statfs *buf; | |
362 | }; | |
6a6a1e5f KM |
363 | /* ARGSUSED */ |
364 | fstatfs(p, uap, retval) | |
5e00df3b | 365 | struct proc *p; |
9e97623a | 366 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
367 | int *retval; |
368 | { | |
fc2aed1e | 369 | struct file *fp; |
3f705640 | 370 | struct mount *mp; |
62e35d50 | 371 | register struct statfs *sp; |
fc2aed1e KM |
372 | int error; |
373 | ||
5e00df3b | 374 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 375 | return (error); |
3f705640 | 376 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 377 | sp = &mp->mnt_stat; |
2c69fe14 | 378 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 379 | return (error); |
54fb9dc2 | 380 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 381 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
382 | } |
383 | ||
bfcdbfbf | 384 | /* |
d4ed1dcd | 385 | * Get statistics on all filesystems. |
bfcdbfbf | 386 | */ |
9e97623a CT |
387 | struct getfsstat_args { |
388 | struct statfs *buf; | |
389 | long bufsize; | |
390 | int flags; | |
391 | }; | |
6a6a1e5f | 392 | getfsstat(p, uap, retval) |
5e00df3b | 393 | struct proc *p; |
9e97623a | 394 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
395 | int *retval; |
396 | { | |
bfcdbfbf | 397 | register struct mount *mp; |
62e35d50 | 398 | register struct statfs *sp; |
f62fad9a | 399 | caddr_t sfsp; |
bfcdbfbf KM |
400 | long count, maxcount, error; |
401 | ||
402 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 403 | sfsp = (caddr_t)uap->buf; |
bfcdbfbf KM |
404 | mp = rootfs; |
405 | count = 0; | |
406 | do { | |
54fb9dc2 KM |
407 | if (sfsp && count < maxcount && |
408 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
409 | sp = &mp->mnt_stat; | |
62e35d50 KM |
410 | /* |
411 | * If MNT_NOWAIT is specified, do not refresh the | |
412 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
413 | */ | |
414 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
415 | (uap->flags & MNT_WAIT)) && | |
2c69fe14 | 416 | (error = VFS_STATFS(mp, sp, p))) { |
54fb9dc2 | 417 | mp = mp->mnt_prev; |
fd8516be KM |
418 | continue; |
419 | } | |
54fb9dc2 | 420 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 421 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 422 | return (error); |
62e35d50 | 423 | sfsp += sizeof(*sp); |
bfcdbfbf | 424 | } |
f62fad9a | 425 | count++; |
54fb9dc2 | 426 | mp = mp->mnt_prev; |
bfcdbfbf KM |
427 | } while (mp != rootfs); |
428 | if (sfsp && count > maxcount) | |
6a6a1e5f | 429 | *retval = maxcount; |
bfcdbfbf | 430 | else |
6a6a1e5f | 431 | *retval = count; |
8429d022 | 432 | return (0); |
bfcdbfbf KM |
433 | } |
434 | ||
6995a2cb KM |
435 | /* |
436 | * Change current working directory to a given file descriptor. | |
437 | */ | |
9e97623a CT |
438 | struct fchdir_args { |
439 | int fd; | |
440 | }; | |
6a6a1e5f KM |
441 | /* ARGSUSED */ |
442 | fchdir(p, uap, retval) | |
5e00df3b | 443 | struct proc *p; |
9e97623a | 444 | struct fchdir_args *uap; |
6a6a1e5f KM |
445 | int *retval; |
446 | { | |
5e00df3b | 447 | register struct filedesc *fdp = p->p_fd; |
6995a2cb KM |
448 | register struct vnode *vp; |
449 | struct file *fp; | |
450 | int error; | |
451 | ||
5e00df3b | 452 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 453 | return (error); |
6995a2cb KM |
454 | vp = (struct vnode *)fp->f_data; |
455 | VOP_LOCK(vp); | |
456 | if (vp->v_type != VDIR) | |
457 | error = ENOTDIR; | |
458 | else | |
2c69fe14 | 459 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
6995a2cb | 460 | VOP_UNLOCK(vp); |
ab214c34 | 461 | if (error) |
8429d022 | 462 | return (error); |
ab214c34 | 463 | VREF(vp); |
5e00df3b KM |
464 | vrele(fdp->fd_cdir); |
465 | fdp->fd_cdir = vp; | |
8429d022 | 466 | return (0); |
6995a2cb KM |
467 | } |
468 | ||
4f083fd7 | 469 | /* |
fc2aed1e | 470 | * Change current working directory (``.''). |
4f083fd7 | 471 | */ |
9e97623a | 472 | struct chdir_args { |
7121fdf0 | 473 | char *path; |
9e97623a | 474 | }; |
6a6a1e5f KM |
475 | /* ARGSUSED */ |
476 | chdir(p, uap, retval) | |
5e00df3b | 477 | struct proc *p; |
9e97623a | 478 | struct chdir_args *uap; |
6a6a1e5f KM |
479 | int *retval; |
480 | { | |
5e00df3b | 481 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 482 | int error; |
8429d022 | 483 | struct nameidata nd; |
3e78e260 | 484 | |
7121fdf0 KB |
485 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
486 | if (error = change_dir(&nd, p)) | |
8429d022 | 487 | return (error); |
5e00df3b | 488 | vrele(fdp->fd_cdir); |
dd4c01c2 | 489 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 490 | return (0); |
fc2aed1e KM |
491 | } |
492 | ||
493 | /* | |
494 | * Change notion of root (``/'') directory. | |
495 | */ | |
9e97623a | 496 | struct chroot_args { |
7121fdf0 | 497 | char *path; |
9e97623a | 498 | }; |
6a6a1e5f KM |
499 | /* ARGSUSED */ |
500 | chroot(p, uap, retval) | |
5e00df3b | 501 | struct proc *p; |
9e97623a | 502 | struct chroot_args *uap; |
6a6a1e5f KM |
503 | int *retval; |
504 | { | |
5e00df3b | 505 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 506 | int error; |
8429d022 | 507 | struct nameidata nd; |
fc2aed1e | 508 | |
8429d022 MK |
509 | if (error = suser(p->p_ucred, &p->p_acflag)) |
510 | return (error); | |
7121fdf0 KB |
511 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
512 | if (error = change_dir(&nd, p)) | |
8429d022 | 513 | return (error); |
5e00df3b KM |
514 | if (fdp->fd_rdir != NULL) |
515 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 516 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 517 | return (0); |
fc2aed1e KM |
518 | } |
519 | ||
520 | /* | |
521 | * Common routine for chroot and chdir. | |
522 | */ | |
7121fdf0 KB |
523 | static int |
524 | change_dir(ndp, p) | |
dd4c01c2 | 525 | register struct nameidata *ndp; |
8429d022 | 526 | struct proc *p; |
fc2aed1e KM |
527 | { |
528 | struct vnode *vp; | |
529 | int error; | |
530 | ||
dd4c01c2 | 531 | if (error = namei(ndp)) |
fc2aed1e KM |
532 | return (error); |
533 | vp = ndp->ni_vp; | |
534 | if (vp->v_type != VDIR) | |
535 | error = ENOTDIR; | |
536 | else | |
2c69fe14 | 537 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
538 | VOP_UNLOCK(vp); |
539 | if (error) | |
540 | vrele(vp); | |
541 | return (error); | |
3e78e260 BJ |
542 | } |
543 | ||
544 | /* | |
6a6a1e5f KM |
545 | * Check permissions, allocate an open file structure, |
546 | * and call the device open routine if any. | |
3e78e260 | 547 | */ |
9e97623a | 548 | struct open_args { |
7121fdf0 KB |
549 | char *path; |
550 | int flags; | |
9e97623a | 551 | int mode; |
9e97623a | 552 | }; |
6a6a1e5f | 553 | open(p, uap, retval) |
5e00df3b | 554 | struct proc *p; |
9e97623a | 555 | register struct open_args *uap; |
6a6a1e5f | 556 | int *retval; |
3e78e260 | 557 | { |
5e00df3b | 558 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 559 | register struct file *fp; |
6aaf085a | 560 | register struct vnode *vp; |
7121fdf0 | 561 | int flags, cmode; |
fc2aed1e | 562 | struct file *nfp; |
ff8d1617 KM |
563 | int type, indx, error; |
564 | struct flock lf; | |
8429d022 | 565 | struct nameidata nd; |
fc2aed1e KM |
566 | extern struct fileops vnops; |
567 | ||
5e00df3b | 568 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 569 | return (error); |
fc2aed1e | 570 | fp = nfp; |
7121fdf0 KB |
571 | flags = FFLAGS(uap->flags); |
572 | cmode = ((uap->mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; | |
573 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); | |
03951846 | 574 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
7121fdf0 | 575 | if (error = vn_open(&nd, flags, cmode)) { |
336f999d | 576 | ffree(fp); |
f0e12026 KM |
577 | if ((error == ENODEV || error == ENXIO) && |
578 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
7121fdf0 KB |
579 | (error = |
580 | dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) { | |
6a6a1e5f | 581 | *retval = indx; |
8429d022 | 582 | return (0); |
6a6a1e5f | 583 | } |
b10521d6 KM |
584 | if (error == ERESTART) |
585 | error = EINTR; | |
78eeb014 | 586 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 587 | return (error); |
528f664c | 588 | } |
da5acac3 | 589 | p->p_dupfd = 0; |
dd4c01c2 | 590 | vp = nd.ni_vp; |
7121fdf0 | 591 | fp->f_flag = flags & FMASK; |
8932276d KM |
592 | fp->f_type = DTYPE_VNODE; |
593 | fp->f_ops = &vnops; | |
594 | fp->f_data = (caddr_t)vp; | |
7121fdf0 | 595 | if (flags & (O_EXLOCK | O_SHLOCK)) { |
ff8d1617 KM |
596 | lf.l_whence = SEEK_SET; |
597 | lf.l_start = 0; | |
598 | lf.l_len = 0; | |
7121fdf0 | 599 | if (flags & O_EXLOCK) |
ff8d1617 KM |
600 | lf.l_type = F_WRLCK; |
601 | else | |
602 | lf.l_type = F_RDLCK; | |
603 | type = F_FLOCK; | |
7121fdf0 | 604 | if ((flags & FNONBLOCK) == 0) |
ff8d1617 | 605 | type |= F_WAIT; |
6aaf085a KM |
606 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
607 | VOP_UNLOCK(vp); | |
608 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); | |
336f999d | 609 | ffree(fp); |
ff8d1617 KM |
610 | fdp->fd_ofiles[indx] = NULL; |
611 | return (error); | |
612 | } | |
b40ecf6f | 613 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 614 | } |
6aaf085a | 615 | VOP_UNLOCK(vp); |
6a6a1e5f | 616 | *retval = indx; |
8429d022 | 617 | return (0); |
3e78e260 BJ |
618 | } |
619 | ||
4fde03dc | 620 | #ifdef COMPAT_43 |
3e78e260 | 621 | /* |
7121fdf0 | 622 | * Create a file. |
3e78e260 | 623 | */ |
9e97623a | 624 | struct ocreat_args { |
7121fdf0 KB |
625 | char *path; |
626 | int mode; | |
9e97623a | 627 | }; |
4fde03dc | 628 | ocreat(p, uap, retval) |
6a6a1e5f | 629 | struct proc *p; |
9e97623a | 630 | register struct ocreat_args *uap; |
6a6a1e5f | 631 | int *retval; |
3e78e260 | 632 | { |
9e97623a | 633 | struct open_args openuap; |
6a6a1e5f | 634 | |
7121fdf0 KB |
635 | openuap.path = uap->path; |
636 | openuap.mode = uap->mode; | |
637 | openuap.flags = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 638 | return (open(p, &openuap, retval)); |
6a6a1e5f | 639 | } |
4fde03dc | 640 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
641 | |
642 | /* | |
7121fdf0 | 643 | * Create a special file. |
6a6a1e5f | 644 | */ |
9e97623a | 645 | struct mknod_args { |
7121fdf0 KB |
646 | char *path; |
647 | int mode; | |
9e97623a CT |
648 | int dev; |
649 | }; | |
6a6a1e5f KM |
650 | /* ARGSUSED */ |
651 | mknod(p, uap, retval) | |
5e00df3b | 652 | struct proc *p; |
9e97623a | 653 | register struct mknod_args *uap; |
6a6a1e5f KM |
654 | int *retval; |
655 | { | |
fc2aed1e KM |
656 | register struct vnode *vp; |
657 | struct vattr vattr; | |
658 | int error; | |
8429d022 | 659 | struct nameidata nd; |
3e78e260 | 660 | |
a5368812 | 661 | CHECKPOINTREF; |
8429d022 MK |
662 | if (error = suser(p->p_ucred, &p->p_acflag)) |
663 | return (error); | |
7121fdf0 | 664 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 665 | if (error = namei(&nd)) |
8429d022 | 666 | return (error); |
dd4c01c2 | 667 | vp = nd.ni_vp; |
cf5ef508 | 668 | if (vp != NULL) |
fc2aed1e | 669 | error = EEXIST; |
cf5ef508 KB |
670 | else { |
671 | VATTR_NULL(&vattr); | |
672 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; | |
673 | vattr.va_rdev = uap->dev; | |
674 | ||
675 | switch (uap->mode & S_IFMT) { | |
676 | case S_IFMT: /* used by badsect to flag bad sectors */ | |
677 | vattr.va_type = VBAD; | |
678 | break; | |
679 | case S_IFCHR: | |
680 | vattr.va_type = VCHR; | |
681 | break; | |
682 | case S_IFBLK: | |
683 | vattr.va_type = VBLK; | |
684 | break; | |
685 | default: | |
686 | error = EINVAL; | |
687 | break; | |
688 | } | |
3e78e260 | 689 | } |
66955caf | 690 | if (!error) { |
dd4c01c2 KM |
691 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
692 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 693 | } else { |
dd4c01c2 KM |
694 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
695 | if (nd.ni_dvp == vp) | |
696 | vrele(nd.ni_dvp); | |
6c44e83b | 697 | else |
dd4c01c2 | 698 | vput(nd.ni_dvp); |
66955caf KM |
699 | if (vp) |
700 | vrele(vp); | |
701 | } | |
a5368812 | 702 | CHECKREFS("mknod"); |
8429d022 | 703 | return (error); |
3e78e260 BJ |
704 | } |
705 | ||
4751dd21 | 706 | /* |
7121fdf0 | 707 | * Create named pipe. |
4751dd21 | 708 | */ |
9e97623a | 709 | struct mkfifo_args { |
7121fdf0 KB |
710 | char *path; |
711 | int mode; | |
9e97623a | 712 | }; |
6a6a1e5f KM |
713 | /* ARGSUSED */ |
714 | mkfifo(p, uap, retval) | |
5e00df3b | 715 | struct proc *p; |
9e97623a | 716 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
717 | int *retval; |
718 | { | |
4751dd21 KM |
719 | struct vattr vattr; |
720 | int error; | |
8429d022 | 721 | struct nameidata nd; |
4751dd21 KM |
722 | |
723 | #ifndef FIFO | |
8429d022 | 724 | return (EOPNOTSUPP); |
4751dd21 | 725 | #else |
7121fdf0 | 726 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 727 | if (error = namei(&nd)) |
8429d022 | 728 | return (error); |
dd4c01c2 KM |
729 | if (nd.ni_vp != NULL) { |
730 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
731 | if (nd.ni_dvp == nd.ni_vp) | |
732 | vrele(nd.ni_dvp); | |
6c44e83b | 733 | else |
dd4c01c2 KM |
734 | vput(nd.ni_dvp); |
735 | vrele(nd.ni_vp); | |
8429d022 | 736 | return (EEXIST); |
4751dd21 | 737 | } |
3658f091 KB |
738 | VATTR_NULL(&vattr); |
739 | vattr.va_type = VFIFO; | |
7121fdf0 | 740 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
741 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
742 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
743 | #endif /* FIFO */ |
744 | } | |
745 | ||
3e78e260 | 746 | /* |
7121fdf0 | 747 | * Make a hard file link. |
3e78e260 | 748 | */ |
9e97623a | 749 | struct link_args { |
7121fdf0 KB |
750 | char *path; |
751 | char *link; | |
9e97623a | 752 | }; |
6a6a1e5f KM |
753 | /* ARGSUSED */ |
754 | link(p, uap, retval) | |
5e00df3b | 755 | struct proc *p; |
9e97623a | 756 | register struct link_args *uap; |
6a6a1e5f KM |
757 | int *retval; |
758 | { | |
7121fdf0 | 759 | register struct vnode *vp; |
8429d022 | 760 | struct nameidata nd; |
7121fdf0 | 761 | int error; |
3e78e260 | 762 | |
a5368812 | 763 | CHECKPOINTREF; |
7121fdf0 | 764 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 765 | if (error = namei(&nd)) |
8429d022 | 766 | return (error); |
dd4c01c2 | 767 | vp = nd.ni_vp; |
cf5ef508 KB |
768 | if (vp->v_type != VDIR || |
769 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
770 | nd.ni_cnd.cn_nameiop = CREATE; | |
771 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
772 | nd.ni_dirp = uap->link; | |
773 | if ((error = namei(&nd)) == 0) { | |
774 | if (nd.ni_vp != NULL) | |
775 | error = EEXIST; | |
776 | if (!error) { | |
777 | LEASE_CHECK(nd.ni_dvp, | |
778 | p, p->p_ucred, LEASE_WRITE); | |
779 | LEASE_CHECK(vp, | |
780 | p, p->p_ucred, LEASE_WRITE); | |
781 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); | |
782 | } else { | |
783 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
784 | if (nd.ni_dvp == nd.ni_vp) | |
785 | vrele(nd.ni_dvp); | |
786 | else | |
787 | vput(nd.ni_dvp); | |
788 | if (nd.ni_vp) | |
789 | vrele(nd.ni_vp); | |
790 | } | |
791 | } | |
66955caf | 792 | } |
cf5ef508 | 793 | vrele(vp); |
a5368812 | 794 | CHECKREFS("link"); |
8429d022 | 795 | return (error); |
3e78e260 BJ |
796 | } |
797 | ||
798 | /* | |
d4ed1dcd | 799 | * Make a symbolic link. |
3e78e260 | 800 | */ |
9e97623a | 801 | struct symlink_args { |
7121fdf0 KB |
802 | char *path; |
803 | char *link; | |
9e97623a | 804 | }; |
6a6a1e5f KM |
805 | /* ARGSUSED */ |
806 | symlink(p, uap, retval) | |
5e00df3b | 807 | struct proc *p; |
9e97623a | 808 | register struct symlink_args *uap; |
6a6a1e5f KM |
809 | int *retval; |
810 | { | |
fc2aed1e | 811 | struct vattr vattr; |
7121fdf0 | 812 | char *path; |
fc2aed1e | 813 | int error; |
8429d022 | 814 | struct nameidata nd; |
3e78e260 | 815 | |
a5368812 | 816 | CHECKPOINTREF; |
7121fdf0 KB |
817 | MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
818 | if (error = copyinstr(uap->path, path, MAXPATHLEN, NULL)) | |
66955caf | 819 | goto out; |
7121fdf0 | 820 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->link, p); |
dd4c01c2 | 821 | if (error = namei(&nd)) |
66955caf | 822 | goto out; |
dd4c01c2 KM |
823 | if (nd.ni_vp) { |
824 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
825 | if (nd.ni_dvp == nd.ni_vp) | |
826 | vrele(nd.ni_dvp); | |
6c44e83b | 827 | else |
dd4c01c2 KM |
828 | vput(nd.ni_dvp); |
829 | vrele(nd.ni_vp); | |
fc2aed1e KM |
830 | error = EEXIST; |
831 | goto out; | |
3e78e260 | 832 | } |
3ee1461b | 833 | VATTR_NULL(&vattr); |
7121fdf0 | 834 | vattr.va_mode = ACCESSPERMS &~ p->p_fd->fd_cmask; |
dd4c01c2 | 835 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
7121fdf0 | 836 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, path); |
fc2aed1e | 837 | out: |
7121fdf0 | 838 | FREE(path, M_NAMEI); |
a5368812 | 839 | CHECKREFS("symlink"); |
8429d022 | 840 | return (error); |
3e78e260 BJ |
841 | } |
842 | ||
843 | /* | |
d4ed1dcd | 844 | * Delete a name from the filesystem. |
3e78e260 | 845 | */ |
9e97623a | 846 | struct unlink_args { |
7121fdf0 | 847 | char *path; |
9e97623a | 848 | }; |
6a6a1e5f KM |
849 | /* ARGSUSED */ |
850 | unlink(p, uap, retval) | |
5e00df3b | 851 | struct proc *p; |
9e97623a | 852 | struct unlink_args *uap; |
6a6a1e5f KM |
853 | int *retval; |
854 | { | |
fc2aed1e KM |
855 | register struct vnode *vp; |
856 | int error; | |
8429d022 | 857 | struct nameidata nd; |
3e78e260 | 858 | |
a5368812 | 859 | CHECKPOINTREF; |
7121fdf0 | 860 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 861 | if (error = namei(&nd)) |
8429d022 | 862 | return (error); |
dd4c01c2 | 863 | vp = nd.ni_vp; |
dbcf7de6 KM |
864 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
865 | VOP_LOCK(vp); | |
7121fdf0 | 866 | |
cf5ef508 KB |
867 | if (vp->v_type != VDIR || |
868 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
869 | /* | |
870 | * The root of a mounted filesystem cannot be deleted. | |
871 | */ | |
872 | if (vp->v_flag & VROOT) | |
873 | error = EBUSY; | |
874 | else | |
875 | (void)vnode_pager_uncache(vp); | |
876 | } | |
877 | ||
878 | if (!error) { | |
dd4c01c2 | 879 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 880 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 881 | } else { |
dd4c01c2 KM |
882 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
883 | if (nd.ni_dvp == vp) | |
884 | vrele(nd.ni_dvp); | |
6c44e83b | 885 | else |
dd4c01c2 | 886 | vput(nd.ni_dvp); |
66955caf KM |
887 | vput(vp); |
888 | } | |
a5368812 | 889 | CHECKREFS("unlink"); |
8429d022 | 890 | return (error); |
3e78e260 BJ |
891 | } |
892 | ||
7121fdf0 KB |
893 | /* |
894 | * Reposition read/write file offset. | |
895 | */ | |
95c0eb1e | 896 | struct lseek_args { |
7121fdf0 | 897 | int fd; |
2f2b3b3d | 898 | int pad; |
7121fdf0 KB |
899 | off_t offset; |
900 | int whence; | |
2f2b3b3d | 901 | }; |
201e5411 | 902 | lseek(p, uap, retval) |
5e00df3b | 903 | struct proc *p; |
95c0eb1e | 904 | register struct lseek_args *uap; |
9e97623a | 905 | int *retval; |
6a6a1e5f | 906 | { |
8429d022 | 907 | struct ucred *cred = p->p_ucred; |
5e00df3b | 908 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 909 | register struct file *fp; |
fc2aed1e KM |
910 | struct vattr vattr; |
911 | int error; | |
912 | ||
7121fdf0 KB |
913 | if ((u_int)uap->fd >= fdp->fd_nfiles || |
914 | (fp = fdp->fd_ofiles[uap->fd]) == NULL) | |
8429d022 | 915 | return (EBADF); |
fc2aed1e | 916 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 917 | return (ESPIPE); |
7121fdf0 | 918 | switch (uap->whence) { |
b4d1aee9 | 919 | case L_INCR: |
7121fdf0 | 920 | fp->f_offset += uap->offset; |
b4d1aee9 | 921 | break; |
b4d1aee9 | 922 | case L_XTND: |
7121fdf0 KB |
923 | if (error = |
924 | VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p)) | |
8429d022 | 925 | return (error); |
7121fdf0 | 926 | fp->f_offset = uap->offset + vattr.va_size; |
b4d1aee9 | 927 | break; |
b4d1aee9 | 928 | case L_SET: |
7121fdf0 | 929 | fp->f_offset = uap->offset; |
b4d1aee9 | 930 | break; |
b4d1aee9 | 931 | default: |
8429d022 | 932 | return (EINVAL); |
b4d1aee9 | 933 | } |
9e97623a | 934 | *(off_t *)retval = fp->f_offset; |
8429d022 | 935 | return (0); |
3e78e260 BJ |
936 | } |
937 | ||
201e5411 | 938 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
64deb204 | 939 | /* |
7121fdf0 | 940 | * Reposition read/write file offset. |
64deb204 | 941 | */ |
95c0eb1e | 942 | struct olseek_args { |
7121fdf0 KB |
943 | int fd; |
944 | long offset; | |
945 | int whence; | |
64deb204 | 946 | }; |
201e5411 | 947 | olseek(p, uap, retval) |
64deb204 | 948 | struct proc *p; |
95c0eb1e | 949 | register struct olseek_args *uap; |
64deb204 KM |
950 | int *retval; |
951 | { | |
95c0eb1e | 952 | struct lseek_args nuap; |
64deb204 KM |
953 | off_t qret; |
954 | int error; | |
955 | ||
7121fdf0 KB |
956 | nuap.fd = uap->fd; |
957 | nuap.offset = uap->offset; | |
958 | nuap.whence = uap->whence; | |
95c0eb1e | 959 | error = lseek(p, &nuap, &qret); |
64deb204 KM |
960 | *(long *)retval = qret; |
961 | return (error); | |
962 | } | |
201e5411 | 963 | #endif /* COMPAT_43 */ |
64deb204 | 964 | |
3e78e260 | 965 | /* |
d4ed1dcd | 966 | * Check access permissions. |
3e78e260 | 967 | */ |
b54e8954 | 968 | struct access_args { |
7121fdf0 KB |
969 | char *path; |
970 | int flags; | |
9e97623a | 971 | }; |
b54e8954 | 972 | access(p, uap, retval) |
5e00df3b | 973 | struct proc *p; |
b54e8954 | 974 | register struct access_args *uap; |
6a6a1e5f KM |
975 | int *retval; |
976 | { | |
8429d022 | 977 | register struct ucred *cred = p->p_ucred; |
fc2aed1e | 978 | register struct vnode *vp; |
cf5ef508 | 979 | int error, flags, t_gid, t_uid; |
8429d022 | 980 | struct nameidata nd; |
3e78e260 | 981 | |
cf5ef508 KB |
982 | t_uid = cred->cr_uid; |
983 | t_gid = cred->cr_groups[0]; | |
8429d022 MK |
984 | cred->cr_uid = p->p_cred->p_ruid; |
985 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
7121fdf0 | 986 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 987 | if (error = namei(&nd)) |
fc2aed1e | 988 | goto out1; |
dd4c01c2 | 989 | vp = nd.ni_vp; |
7121fdf0 KB |
990 | |
991 | /* Flags == 0 means only check for existence. */ | |
992 | if (uap->flags) { | |
993 | flags = 0; | |
994 | if (uap->flags & R_OK) | |
995 | flags |= VREAD; | |
996 | if (uap->flags & W_OK) | |
997 | flags |= VWRITE; | |
998 | if (uap->flags & X_OK) | |
999 | flags |= VEXEC; | |
1000 | if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) | |
1001 | error = VOP_ACCESS(vp, flags, cred, p); | |
3e78e260 | 1002 | } |
fc2aed1e KM |
1003 | vput(vp); |
1004 | out1: | |
cf5ef508 KB |
1005 | cred->cr_uid = t_uid; |
1006 | cred->cr_groups[0] = t_gid; | |
8429d022 | 1007 | return (error); |
3e78e260 | 1008 | } |
d67a03eb | 1009 | |
8932276d | 1010 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1011 | /* |
7121fdf0 | 1012 | * Get file status; this version follows links. |
d67a03eb | 1013 | */ |
9e97623a | 1014 | struct ostat_args { |
7121fdf0 | 1015 | char *path; |
9e97623a CT |
1016 | struct ostat *ub; |
1017 | }; | |
6a6a1e5f | 1018 | /* ARGSUSED */ |
ae9b6dc3 | 1019 | ostat(p, uap, retval) |
be320a2b | 1020 | struct proc *p; |
9e97623a | 1021 | register struct ostat_args *uap; |
be320a2b KM |
1022 | int *retval; |
1023 | { | |
1024 | struct stat sb; | |
1025 | struct ostat osb; | |
1026 | int error; | |
1027 | struct nameidata nd; | |
1028 | ||
7121fdf0 | 1029 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1030 | if (error = namei(&nd)) |
1031 | return (error); | |
1032 | error = vn_stat(nd.ni_vp, &sb, p); | |
1033 | vput(nd.ni_vp); | |
1034 | if (error) | |
1035 | return (error); | |
1036 | cvtstat(&sb, &osb); | |
1037 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1038 | return (error); | |
1039 | } | |
1040 | ||
1041 | /* | |
7121fdf0 | 1042 | * Get file status; this version does not follow links. |
be320a2b | 1043 | */ |
9e97623a | 1044 | struct olstat_args { |
7121fdf0 | 1045 | char *path; |
9e97623a CT |
1046 | struct ostat *ub; |
1047 | }; | |
be320a2b | 1048 | /* ARGSUSED */ |
ae9b6dc3 | 1049 | olstat(p, uap, retval) |
be320a2b | 1050 | struct proc *p; |
9e97623a | 1051 | register struct olstat_args *uap; |
be320a2b KM |
1052 | int *retval; |
1053 | { | |
1054 | struct stat sb; | |
1055 | struct ostat osb; | |
1056 | int error; | |
1057 | struct nameidata nd; | |
1058 | ||
7121fdf0 | 1059 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1060 | if (error = namei(&nd)) |
1061 | return (error); | |
1062 | error = vn_stat(nd.ni_vp, &sb, p); | |
1063 | vput(nd.ni_vp); | |
1064 | if (error) | |
1065 | return (error); | |
1066 | cvtstat(&sb, &osb); | |
1067 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1068 | return (error); | |
1069 | } | |
1070 | ||
1071 | /* | |
7121fdf0 | 1072 | * Convert from an old to a new stat structure. |
be320a2b KM |
1073 | */ |
1074 | cvtstat(st, ost) | |
1075 | struct stat *st; | |
1076 | struct ostat *ost; | |
1077 | { | |
1078 | ||
1079 | ost->st_dev = st->st_dev; | |
1080 | ost->st_ino = st->st_ino; | |
1081 | ost->st_mode = st->st_mode; | |
1082 | ost->st_nlink = st->st_nlink; | |
1083 | ost->st_uid = st->st_uid; | |
1084 | ost->st_gid = st->st_gid; | |
1085 | ost->st_rdev = st->st_rdev; | |
1086 | if (st->st_size < (quad_t)1 << 32) | |
1087 | ost->st_size = st->st_size; | |
1088 | else | |
1089 | ost->st_size = -2; | |
1090 | ost->st_atime = st->st_atime; | |
1091 | ost->st_mtime = st->st_mtime; | |
1092 | ost->st_ctime = st->st_ctime; | |
1093 | ost->st_blksize = st->st_blksize; | |
1094 | ost->st_blocks = st->st_blocks; | |
1095 | ost->st_flags = st->st_flags; | |
1096 | ost->st_gen = st->st_gen; | |
1097 | } | |
8932276d | 1098 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1099 | |
1100 | /* | |
7121fdf0 | 1101 | * Get file status; this version follows links. |
be320a2b | 1102 | */ |
9e97623a | 1103 | struct stat_args { |
7121fdf0 | 1104 | char *path; |
9e97623a CT |
1105 | struct stat *ub; |
1106 | }; | |
be320a2b | 1107 | /* ARGSUSED */ |
ae9b6dc3 | 1108 | stat(p, uap, retval) |
5e00df3b | 1109 | struct proc *p; |
9e97623a | 1110 | register struct stat_args *uap; |
6a6a1e5f | 1111 | int *retval; |
d67a03eb | 1112 | { |
6a6a1e5f KM |
1113 | struct stat sb; |
1114 | int error; | |
8429d022 | 1115 | struct nameidata nd; |
d67a03eb | 1116 | |
7121fdf0 | 1117 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1118 | if (error = namei(&nd)) |
8429d022 | 1119 | return (error); |
dd4c01c2 KM |
1120 | error = vn_stat(nd.ni_vp, &sb, p); |
1121 | vput(nd.ni_vp); | |
6a6a1e5f | 1122 | if (error) |
8429d022 | 1123 | return (error); |
6a6a1e5f | 1124 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1125 | return (error); |
d67a03eb BJ |
1126 | } |
1127 | ||
5485e062 | 1128 | /* |
7121fdf0 | 1129 | * Get file status; this version does not follow links. |
5485e062 | 1130 | */ |
9e97623a | 1131 | struct lstat_args { |
7121fdf0 | 1132 | char *path; |
9e97623a CT |
1133 | struct stat *ub; |
1134 | }; | |
6a6a1e5f | 1135 | /* ARGSUSED */ |
ae9b6dc3 | 1136 | lstat(p, uap, retval) |
5e00df3b | 1137 | struct proc *p; |
9e97623a | 1138 | register struct lstat_args *uap; |
6a6a1e5f KM |
1139 | int *retval; |
1140 | { | |
fc2aed1e | 1141 | int error; |
49f762b8 KM |
1142 | struct vnode *vp, *dvp; |
1143 | struct stat sb, sb1; | |
8429d022 | 1144 | struct nameidata nd; |
5485e062 | 1145 | |
49f762b8 | 1146 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
7121fdf0 | 1147 | uap->path, p); |
dd4c01c2 | 1148 | if (error = namei(&nd)) |
8429d022 | 1149 | return (error); |
49f762b8 KM |
1150 | /* |
1151 | * For symbolic links, always return the attributes of its | |
1152 | * containing directory, except for mode, size, and links. | |
1153 | */ | |
1154 | vp = nd.ni_vp; | |
1155 | dvp = nd.ni_dvp; | |
1156 | if (vp->v_type != VLNK) { | |
1157 | if (dvp == vp) | |
1158 | vrele(dvp); | |
1159 | else | |
1160 | vput(dvp); | |
1161 | error = vn_stat(vp, &sb, p); | |
1162 | vput(vp); | |
1163 | if (error) | |
1164 | return (error); | |
1165 | } else { | |
1166 | error = vn_stat(dvp, &sb, p); | |
1167 | vput(dvp); | |
1168 | if (error) { | |
1169 | vput(vp); | |
1170 | return (error); | |
1171 | } | |
1172 | error = vn_stat(vp, &sb1, p); | |
1173 | vput(vp); | |
1174 | if (error) | |
1175 | return (error); | |
1176 | sb.st_mode &= ~S_IFDIR; | |
1177 | sb.st_mode |= S_IFLNK; | |
1178 | sb.st_nlink = sb1.st_nlink; | |
1179 | sb.st_size = sb1.st_size; | |
1180 | sb.st_blocks = sb1.st_blocks; | |
1181 | } | |
fc2aed1e | 1182 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1183 | return (error); |
d67a03eb BJ |
1184 | } |
1185 | ||
201e5411 | 1186 | /* |
7121fdf0 | 1187 | * Get configurable pathname variables. |
201e5411 KM |
1188 | */ |
1189 | struct pathconf_args { | |
7121fdf0 | 1190 | char *path; |
201e5411 KM |
1191 | int name; |
1192 | }; | |
1193 | /* ARGSUSED */ | |
1194 | pathconf(p, uap, retval) | |
1195 | struct proc *p; | |
1196 | register struct pathconf_args *uap; | |
1197 | int *retval; | |
1198 | { | |
1199 | int error; | |
1200 | struct nameidata nd; | |
1201 | ||
7121fdf0 | 1202 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
201e5411 KM |
1203 | if (error = namei(&nd)) |
1204 | return (error); | |
1205 | error = VOP_PATHCONF(nd.ni_vp, uap->name, retval); | |
1206 | vput(nd.ni_vp); | |
1207 | return (error); | |
1208 | } | |
1209 | ||
d67a03eb | 1210 | /* |
d4ed1dcd | 1211 | * Return target name of a symbolic link. |
5485e062 | 1212 | */ |
9e97623a | 1213 | struct readlink_args { |
7121fdf0 | 1214 | char *path; |
9e97623a CT |
1215 | char *buf; |
1216 | int count; | |
1217 | }; | |
6a6a1e5f KM |
1218 | /* ARGSUSED */ |
1219 | readlink(p, uap, retval) | |
5e00df3b | 1220 | struct proc *p; |
9e97623a | 1221 | register struct readlink_args *uap; |
6a6a1e5f KM |
1222 | int *retval; |
1223 | { | |
fc2aed1e KM |
1224 | register struct vnode *vp; |
1225 | struct iovec aiov; | |
1226 | struct uio auio; | |
1227 | int error; | |
8429d022 | 1228 | struct nameidata nd; |
5485e062 | 1229 | |
a5368812 | 1230 | CHECKPOINTREF; |
7121fdf0 | 1231 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1232 | if (error = namei(&nd)) |
8429d022 | 1233 | return (error); |
dd4c01c2 | 1234 | vp = nd.ni_vp; |
7121fdf0 | 1235 | if (vp->v_type != VLNK) |
fc2aed1e | 1236 | error = EINVAL; |
7121fdf0 KB |
1237 | else { |
1238 | aiov.iov_base = uap->buf; | |
1239 | aiov.iov_len = uap->count; | |
1240 | auio.uio_iov = &aiov; | |
1241 | auio.uio_iovcnt = 1; | |
1242 | auio.uio_offset = 0; | |
1243 | auio.uio_rw = UIO_READ; | |
1244 | auio.uio_segflg = UIO_USERSPACE; | |
1245 | auio.uio_procp = p; | |
1246 | auio.uio_resid = uap->count; | |
1247 | error = VOP_READLINK(vp, &auio, p->p_ucred); | |
5485e062 | 1248 | } |
fc2aed1e | 1249 | vput(vp); |
6a6a1e5f | 1250 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1251 | CHECKREFS("readlink"); |
8429d022 | 1252 | return (error); |
5485e062 BJ |
1253 | } |
1254 | ||
6995a2cb | 1255 | /* |
7121fdf0 | 1256 | * Change flags of a file given a path name. |
6995a2cb | 1257 | */ |
9e97623a | 1258 | struct chflags_args { |
7121fdf0 | 1259 | char *path; |
9e97623a CT |
1260 | int flags; |
1261 | }; | |
6a6a1e5f KM |
1262 | /* ARGSUSED */ |
1263 | chflags(p, uap, retval) | |
5e00df3b | 1264 | struct proc *p; |
9e97623a | 1265 | register struct chflags_args *uap; |
6a6a1e5f KM |
1266 | int *retval; |
1267 | { | |
6995a2cb KM |
1268 | register struct vnode *vp; |
1269 | struct vattr vattr; | |
1270 | int error; | |
8429d022 | 1271 | struct nameidata nd; |
6995a2cb | 1272 | |
7121fdf0 | 1273 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1274 | if (error = namei(&nd)) |
8429d022 | 1275 | return (error); |
dd4c01c2 | 1276 | vp = nd.ni_vp; |
dbcf7de6 KM |
1277 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1278 | VOP_LOCK(vp); | |
7121fdf0 | 1279 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1280 | error = EROFS; |
7121fdf0 KB |
1281 | else { |
1282 | VATTR_NULL(&vattr); | |
1283 | vattr.va_flags = uap->flags; | |
1284 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1285 | } |
6995a2cb | 1286 | vput(vp); |
8429d022 | 1287 | return (error); |
6995a2cb KM |
1288 | } |
1289 | ||
1290 | /* | |
1291 | * Change flags of a file given a file descriptor. | |
1292 | */ | |
9e97623a CT |
1293 | struct fchflags_args { |
1294 | int fd; | |
1295 | int flags; | |
1296 | }; | |
6a6a1e5f KM |
1297 | /* ARGSUSED */ |
1298 | fchflags(p, uap, retval) | |
5e00df3b | 1299 | struct proc *p; |
9e97623a | 1300 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1301 | int *retval; |
1302 | { | |
6995a2cb KM |
1303 | struct vattr vattr; |
1304 | struct vnode *vp; | |
1305 | struct file *fp; | |
1306 | int error; | |
1307 | ||
5e00df3b | 1308 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1309 | return (error); |
6995a2cb | 1310 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1311 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1312 | VOP_LOCK(vp); |
7121fdf0 | 1313 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1314 | error = EROFS; |
7121fdf0 KB |
1315 | else { |
1316 | VATTR_NULL(&vattr); | |
1317 | vattr.va_flags = uap->flags; | |
1318 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1319 | } |
6995a2cb | 1320 | VOP_UNLOCK(vp); |
8429d022 | 1321 | return (error); |
6995a2cb KM |
1322 | } |
1323 | ||
4f083fd7 SL |
1324 | /* |
1325 | * Change mode of a file given path name. | |
1326 | */ | |
9e97623a | 1327 | struct chmod_args { |
7121fdf0 KB |
1328 | char *path; |
1329 | int mode; | |
9e97623a | 1330 | }; |
6a6a1e5f KM |
1331 | /* ARGSUSED */ |
1332 | chmod(p, uap, retval) | |
5e00df3b | 1333 | struct proc *p; |
9e97623a | 1334 | register struct chmod_args *uap; |
6a6a1e5f KM |
1335 | int *retval; |
1336 | { | |
fc2aed1e KM |
1337 | register struct vnode *vp; |
1338 | struct vattr vattr; | |
1339 | int error; | |
8429d022 | 1340 | struct nameidata nd; |
5485e062 | 1341 | |
7121fdf0 | 1342 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1343 | if (error = namei(&nd)) |
8429d022 | 1344 | return (error); |
dd4c01c2 | 1345 | vp = nd.ni_vp; |
dbcf7de6 KM |
1346 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1347 | VOP_LOCK(vp); | |
7121fdf0 | 1348 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1349 | error = EROFS; |
7121fdf0 KB |
1350 | else { |
1351 | VATTR_NULL(&vattr); | |
1352 | vattr.va_mode = uap->mode & ALLPERMS; | |
1353 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1354 | } |
fc2aed1e | 1355 | vput(vp); |
8429d022 | 1356 | return (error); |
528f664c | 1357 | } |
f94ceb3b | 1358 | |
4f083fd7 SL |
1359 | /* |
1360 | * Change mode of a file given a file descriptor. | |
1361 | */ | |
9e97623a CT |
1362 | struct fchmod_args { |
1363 | int fd; | |
7121fdf0 | 1364 | int mode; |
9e97623a | 1365 | }; |
6a6a1e5f KM |
1366 | /* ARGSUSED */ |
1367 | fchmod(p, uap, retval) | |
5e00df3b | 1368 | struct proc *p; |
9e97623a | 1369 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1370 | int *retval; |
1371 | { | |
fc2aed1e KM |
1372 | struct vattr vattr; |
1373 | struct vnode *vp; | |
1374 | struct file *fp; | |
1375 | int error; | |
1376 | ||
5e00df3b | 1377 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1378 | return (error); |
fc2aed1e | 1379 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1380 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1381 | VOP_LOCK(vp); |
7121fdf0 | 1382 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1383 | error = EROFS; |
7121fdf0 KB |
1384 | else { |
1385 | VATTR_NULL(&vattr); | |
1386 | vattr.va_mode = uap->mode & ALLPERMS; | |
1387 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
f94ceb3b | 1388 | } |
fc2aed1e | 1389 | VOP_UNLOCK(vp); |
8429d022 | 1390 | return (error); |
5485e062 BJ |
1391 | } |
1392 | ||
4f083fd7 SL |
1393 | /* |
1394 | * Set ownership given a path name. | |
1395 | */ | |
9e97623a | 1396 | struct chown_args { |
7121fdf0 | 1397 | char *path; |
9e97623a CT |
1398 | int uid; |
1399 | int gid; | |
1400 | }; | |
6a6a1e5f KM |
1401 | /* ARGSUSED */ |
1402 | chown(p, uap, retval) | |
5e00df3b | 1403 | struct proc *p; |
9e97623a | 1404 | register struct chown_args *uap; |
6a6a1e5f KM |
1405 | int *retval; |
1406 | { | |
fc2aed1e KM |
1407 | register struct vnode *vp; |
1408 | struct vattr vattr; | |
1409 | int error; | |
8429d022 | 1410 | struct nameidata nd; |
d67a03eb | 1411 | |
7121fdf0 | 1412 | NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1413 | if (error = namei(&nd)) |
8429d022 | 1414 | return (error); |
dd4c01c2 | 1415 | vp = nd.ni_vp; |
dbcf7de6 KM |
1416 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1417 | VOP_LOCK(vp); | |
7121fdf0 | 1418 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1419 | error = EROFS; |
7121fdf0 KB |
1420 | else { |
1421 | VATTR_NULL(&vattr); | |
1422 | vattr.va_uid = uap->uid; | |
1423 | vattr.va_gid = uap->gid; | |
1424 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1425 | } |
fc2aed1e | 1426 | vput(vp); |
8429d022 | 1427 | return (error); |
528f664c | 1428 | } |
f94ceb3b | 1429 | |
4f083fd7 SL |
1430 | /* |
1431 | * Set ownership given a file descriptor. | |
1432 | */ | |
9e97623a CT |
1433 | struct fchown_args { |
1434 | int fd; | |
1435 | int uid; | |
1436 | int gid; | |
1437 | }; | |
6a6a1e5f KM |
1438 | /* ARGSUSED */ |
1439 | fchown(p, uap, retval) | |
5e00df3b | 1440 | struct proc *p; |
9e97623a | 1441 | register struct fchown_args *uap; |
6a6a1e5f KM |
1442 | int *retval; |
1443 | { | |
fc2aed1e KM |
1444 | struct vattr vattr; |
1445 | struct vnode *vp; | |
1446 | struct file *fp; | |
1447 | int error; | |
1448 | ||
5e00df3b | 1449 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1450 | return (error); |
fc2aed1e | 1451 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1452 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1453 | VOP_LOCK(vp); |
7121fdf0 | 1454 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1455 | error = EROFS; |
7121fdf0 KB |
1456 | else { |
1457 | VATTR_NULL(&vattr); | |
1458 | vattr.va_uid = uap->uid; | |
1459 | vattr.va_gid = uap->gid; | |
1460 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1461 | } |
fc2aed1e | 1462 | VOP_UNLOCK(vp); |
8429d022 | 1463 | return (error); |
d67a03eb BJ |
1464 | } |
1465 | ||
6a6a1e5f KM |
1466 | /* |
1467 | * Set the access and modification times of a file. | |
1468 | */ | |
9e97623a | 1469 | struct utimes_args { |
7121fdf0 | 1470 | char *path; |
9e97623a CT |
1471 | struct timeval *tptr; |
1472 | }; | |
6a6a1e5f KM |
1473 | /* ARGSUSED */ |
1474 | utimes(p, uap, retval) | |
5e00df3b | 1475 | struct proc *p; |
9e97623a | 1476 | register struct utimes_args *uap; |
6a6a1e5f KM |
1477 | int *retval; |
1478 | { | |
fc2aed1e | 1479 | register struct vnode *vp; |
bb1b75f4 | 1480 | struct timeval tv[2]; |
fc2aed1e | 1481 | struct vattr vattr; |
8e88b0cd | 1482 | int error; |
8429d022 | 1483 | struct nameidata nd; |
bb1b75f4 | 1484 | |
f8ee9a49 KB |
1485 | VATTR_NULL(&vattr); |
1486 | if (uap->tptr == NULL) { | |
1487 | microtime(&tv[0]); | |
1488 | tv[1] = tv[0]; | |
fcba749b | 1489 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1490 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1491 | return (error); | |
7121fdf0 | 1492 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1493 | if (error = namei(&nd)) |
8429d022 | 1494 | return (error); |
dd4c01c2 | 1495 | vp = nd.ni_vp; |
dbcf7de6 KM |
1496 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1497 | VOP_LOCK(vp); | |
7121fdf0 | 1498 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1499 | error = EROFS; |
7121fdf0 KB |
1500 | else { |
1501 | vattr.va_atime.ts_sec = tv[0].tv_sec; | |
1502 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1503 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1504 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
1505 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
bb1b75f4 | 1506 | } |
fc2aed1e | 1507 | vput(vp); |
8429d022 | 1508 | return (error); |
d67a03eb | 1509 | } |
64d3a787 | 1510 | |
7121fdf0 KB |
1511 | /* |
1512 | * Truncate a file given its path name. | |
1513 | */ | |
95c0eb1e | 1514 | struct truncate_args { |
7121fdf0 | 1515 | char *path; |
2f2b3b3d CT |
1516 | int pad; |
1517 | off_t length; | |
1518 | }; | |
be320a2b | 1519 | /* ARGSUSED */ |
201e5411 | 1520 | truncate(p, uap, retval) |
5e00df3b | 1521 | struct proc *p; |
95c0eb1e | 1522 | register struct truncate_args *uap; |
6a6a1e5f KM |
1523 | int *retval; |
1524 | { | |
fc2aed1e KM |
1525 | register struct vnode *vp; |
1526 | struct vattr vattr; | |
1527 | int error; | |
8429d022 | 1528 | struct nameidata nd; |
528f664c | 1529 | |
7121fdf0 | 1530 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1531 | if (error = namei(&nd)) |
8429d022 | 1532 | return (error); |
dd4c01c2 | 1533 | vp = nd.ni_vp; |
dbcf7de6 KM |
1534 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1535 | VOP_LOCK(vp); | |
7121fdf0 | 1536 | if (vp->v_type == VDIR) |
fc2aed1e | 1537 | error = EISDIR; |
7121fdf0 KB |
1538 | else if ((error = vn_writechk(vp)) == 0 && |
1539 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p)) == 0) { | |
1540 | VATTR_NULL(&vattr); | |
1541 | vattr.va_size = uap->length; | |
1542 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
528f664c | 1543 | } |
fc2aed1e | 1544 | vput(vp); |
8429d022 | 1545 | return (error); |
528f664c SL |
1546 | } |
1547 | ||
7121fdf0 KB |
1548 | /* |
1549 | * Truncate a file given a file descriptor. | |
1550 | */ | |
95c0eb1e | 1551 | struct ftruncate_args { |
2f2b3b3d CT |
1552 | int fd; |
1553 | int pad; | |
1554 | off_t length; | |
1555 | }; | |
6a6a1e5f | 1556 | /* ARGSUSED */ |
201e5411 | 1557 | ftruncate(p, uap, retval) |
5e00df3b | 1558 | struct proc *p; |
95c0eb1e | 1559 | register struct ftruncate_args *uap; |
6a6a1e5f KM |
1560 | int *retval; |
1561 | { | |
fc2aed1e KM |
1562 | struct vattr vattr; |
1563 | struct vnode *vp; | |
528f664c | 1564 | struct file *fp; |
fc2aed1e KM |
1565 | int error; |
1566 | ||
5e00df3b | 1567 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1568 | return (error); |
fc2aed1e | 1569 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1570 | return (EINVAL); |
fc2aed1e | 1571 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1572 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1573 | VOP_LOCK(vp); |
7121fdf0 | 1574 | if (vp->v_type == VDIR) |
fc2aed1e | 1575 | error = EISDIR; |
7121fdf0 KB |
1576 | else if ((error = vn_writechk(vp)) == 0) { |
1577 | VATTR_NULL(&vattr); | |
1578 | vattr.va_size = uap->length; | |
1579 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); | |
528f664c | 1580 | } |
fc2aed1e | 1581 | VOP_UNLOCK(vp); |
8429d022 | 1582 | return (error); |
4f083fd7 SL |
1583 | } |
1584 | ||
2f2b3b3d CT |
1585 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1586 | /* | |
1587 | * Truncate a file given its path name. | |
1588 | */ | |
95c0eb1e | 1589 | struct otruncate_args { |
7121fdf0 | 1590 | char *path; |
9e97623a CT |
1591 | long length; |
1592 | }; | |
2f2b3b3d | 1593 | /* ARGSUSED */ |
51a9a1cf | 1594 | otruncate(p, uap, retval) |
2f2b3b3d | 1595 | struct proc *p; |
95c0eb1e | 1596 | register struct otruncate_args *uap; |
2f2b3b3d CT |
1597 | int *retval; |
1598 | { | |
95c0eb1e | 1599 | struct truncate_args nuap; |
2f2b3b3d | 1600 | |
7121fdf0 | 1601 | nuap.path = uap->path; |
2f2b3b3d | 1602 | nuap.length = uap->length; |
95c0eb1e | 1603 | return (truncate(p, &nuap, retval)); |
2f2b3b3d CT |
1604 | } |
1605 | ||
1606 | /* | |
1607 | * Truncate a file given a file descriptor. | |
1608 | */ | |
95c0eb1e | 1609 | struct oftruncate_args { |
9e97623a CT |
1610 | int fd; |
1611 | long length; | |
1612 | }; | |
2f2b3b3d | 1613 | /* ARGSUSED */ |
51a9a1cf | 1614 | oftruncate(p, uap, retval) |
2f2b3b3d | 1615 | struct proc *p; |
95c0eb1e | 1616 | register struct oftruncate_args *uap; |
2f2b3b3d CT |
1617 | int *retval; |
1618 | { | |
95c0eb1e | 1619 | struct ftruncate_args nuap; |
2f2b3b3d CT |
1620 | |
1621 | nuap.fd = uap->fd; | |
1622 | nuap.length = uap->length; | |
95c0eb1e | 1623 | return (ftruncate(p, &nuap, retval)); |
2f2b3b3d CT |
1624 | } |
1625 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1626 | ||
4f083fd7 | 1627 | /* |
7121fdf0 | 1628 | * Sync an open file. |
4f083fd7 | 1629 | */ |
9e97623a CT |
1630 | struct fsync_args { |
1631 | int fd; | |
1632 | }; | |
6a6a1e5f KM |
1633 | /* ARGSUSED */ |
1634 | fsync(p, uap, retval) | |
5e00df3b | 1635 | struct proc *p; |
9e97623a | 1636 | struct fsync_args *uap; |
6a6a1e5f KM |
1637 | int *retval; |
1638 | { | |
e79467ea | 1639 | register struct vnode *vp; |
4f083fd7 | 1640 | struct file *fp; |
fc2aed1e | 1641 | int error; |
4f083fd7 | 1642 | |
5e00df3b | 1643 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1644 | return (error); |
e79467ea KM |
1645 | vp = (struct vnode *)fp->f_data; |
1646 | VOP_LOCK(vp); | |
09d2ef1a | 1647 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1648 | VOP_UNLOCK(vp); |
8429d022 | 1649 | return (error); |
528f664c SL |
1650 | } |
1651 | ||
4f083fd7 | 1652 | /* |
7121fdf0 KB |
1653 | * Rename files. Source and destination must either both be directories, |
1654 | * or both not be directories. If target is a directory, it must be empty. | |
4f083fd7 | 1655 | */ |
9e97623a CT |
1656 | struct rename_args { |
1657 | char *from; | |
1658 | char *to; | |
1659 | }; | |
6a6a1e5f KM |
1660 | /* ARGSUSED */ |
1661 | rename(p, uap, retval) | |
5e00df3b | 1662 | struct proc *p; |
9e97623a | 1663 | register struct rename_args *uap; |
6a6a1e5f KM |
1664 | int *retval; |
1665 | { | |
fc2aed1e | 1666 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1667 | struct nameidata fromnd, tond; |
fc2aed1e | 1668 | int error; |
4f083fd7 | 1669 | |
a5368812 | 1670 | CHECKPOINTREF; |
dd4c01c2 KM |
1671 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1672 | uap->from, p); | |
1673 | if (error = namei(&fromnd)) | |
8429d022 | 1674 | return (error); |
5718fad3 | 1675 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1676 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1677 | UIO_USERSPACE, uap->to, p); | |
1678 | if (error = namei(&tond)) { | |
cfef4373 | 1679 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1680 | vrele(fromnd.ni_dvp); |
66955caf KM |
1681 | vrele(fvp); |
1682 | goto out1; | |
1683 | } | |
fc2aed1e KM |
1684 | tdvp = tond.ni_dvp; |
1685 | tvp = tond.ni_vp; | |
1686 | if (tvp != NULL) { | |
1687 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1688 | error = ENOTDIR; |
fc2aed1e KM |
1689 | goto out; |
1690 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1691 | error = EISDIR; |
fc2aed1e | 1692 | goto out; |
a5390dce | 1693 | } |
64d3a787 | 1694 | } |
fe562f32 | 1695 | if (fvp == tdvp) |
fc2aed1e | 1696 | error = EINVAL; |
fe562f32 | 1697 | /* |
5718fad3 KM |
1698 | * If source is the same as the destination (that is the |
1699 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1700 | * then there is nothing to do. |
1701 | */ | |
5718fad3 | 1702 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1703 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1704 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1705 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1706 | error = -1; |
fc2aed1e | 1707 | out: |
66955caf | 1708 | if (!error) { |
e62d4143 KM |
1709 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1710 | if (fromnd.ni_dvp != tdvp) | |
1711 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1712 | if (tvp) | |
1713 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1714 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1715 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1716 | } else { |
cfef4373 | 1717 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1718 | if (tdvp == tvp) |
1719 | vrele(tdvp); | |
1720 | else | |
1721 | vput(tdvp); | |
66955caf KM |
1722 | if (tvp) |
1723 | vput(tvp); | |
cfef4373 | 1724 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1725 | vrele(fromnd.ni_dvp); |
66955caf | 1726 | vrele(fvp); |
64d3a787 | 1727 | } |
c03959f9 | 1728 | p->p_spare[1]--; |
5718fad3 | 1729 | vrele(tond.ni_startdir); |
dd4c01c2 | 1730 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1731 | out1: |
c03959f9 | 1732 | p->p_spare[1]--; |
5718fad3 | 1733 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1734 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1735 | CHECKREFS("rename"); |
fe562f32 | 1736 | if (error == -1) |
8429d022 MK |
1737 | return (0); |
1738 | return (error); | |
64d3a787 | 1739 | } |
88a7a62a | 1740 | |
88a7a62a | 1741 | /* |
7121fdf0 | 1742 | * Make a directory file. |
88a7a62a | 1743 | */ |
9e97623a | 1744 | struct mkdir_args { |
7121fdf0 KB |
1745 | char *path; |
1746 | int mode; | |
9e97623a | 1747 | }; |
6a6a1e5f KM |
1748 | /* ARGSUSED */ |
1749 | mkdir(p, uap, retval) | |
5e00df3b | 1750 | struct proc *p; |
9e97623a | 1751 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1752 | int *retval; |
1753 | { | |
fc2aed1e KM |
1754 | register struct vnode *vp; |
1755 | struct vattr vattr; | |
1756 | int error; | |
8429d022 | 1757 | struct nameidata nd; |
88a7a62a | 1758 | |
a5368812 | 1759 | CHECKPOINTREF; |
7121fdf0 | 1760 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1761 | if (error = namei(&nd)) |
8429d022 | 1762 | return (error); |
dd4c01c2 | 1763 | vp = nd.ni_vp; |
fc2aed1e | 1764 | if (vp != NULL) { |
dd4c01c2 KM |
1765 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1766 | if (nd.ni_dvp == vp) | |
1767 | vrele(nd.ni_dvp); | |
6c44e83b | 1768 | else |
dd4c01c2 | 1769 | vput(nd.ni_dvp); |
66955caf | 1770 | vrele(vp); |
a5368812 | 1771 | CHECKREFS("mkdir1"); |
8429d022 | 1772 | return (EEXIST); |
88a7a62a | 1773 | } |
3ee1461b | 1774 | VATTR_NULL(&vattr); |
fc2aed1e | 1775 | vattr.va_type = VDIR; |
7121fdf0 | 1776 | vattr.va_mode = (uap->mode & ACCESSPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1777 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1778 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1779 | if (!error) |
dd4c01c2 | 1780 | vput(nd.ni_vp); |
a5368812 | 1781 | CHECKREFS("mkdir2"); |
8429d022 | 1782 | return (error); |
88a7a62a SL |
1783 | } |
1784 | ||
1785 | /* | |
7121fdf0 | 1786 | * Remove a directory file. |
88a7a62a | 1787 | */ |
9e97623a | 1788 | struct rmdir_args { |
7121fdf0 | 1789 | char *path; |
9e97623a | 1790 | }; |
6a6a1e5f KM |
1791 | /* ARGSUSED */ |
1792 | rmdir(p, uap, retval) | |
5e00df3b | 1793 | struct proc *p; |
9e97623a | 1794 | struct rmdir_args *uap; |
6a6a1e5f KM |
1795 | int *retval; |
1796 | { | |
fc2aed1e KM |
1797 | register struct vnode *vp; |
1798 | int error; | |
8429d022 | 1799 | struct nameidata nd; |
88a7a62a | 1800 | |
a5368812 | 1801 | CHECKPOINTREF; |
7121fdf0 | 1802 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1803 | if (error = namei(&nd)) |
8429d022 | 1804 | return (error); |
dd4c01c2 | 1805 | vp = nd.ni_vp; |
fc2aed1e KM |
1806 | if (vp->v_type != VDIR) { |
1807 | error = ENOTDIR; | |
88a7a62a SL |
1808 | goto out; |
1809 | } | |
1810 | /* | |
fc2aed1e | 1811 | * No rmdir "." please. |
88a7a62a | 1812 | */ |
dd4c01c2 | 1813 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1814 | error = EINVAL; |
88a7a62a SL |
1815 | goto out; |
1816 | } | |
1817 | /* | |
d4ed1dcd | 1818 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1819 | */ |
fc2aed1e KM |
1820 | if (vp->v_flag & VROOT) |
1821 | error = EBUSY; | |
88a7a62a | 1822 | out: |
66955caf | 1823 | if (!error) { |
dd4c01c2 | 1824 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1825 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1826 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1827 | } else { |
dd4c01c2 KM |
1828 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1829 | if (nd.ni_dvp == vp) | |
1830 | vrele(nd.ni_dvp); | |
6c44e83b | 1831 | else |
dd4c01c2 | 1832 | vput(nd.ni_dvp); |
66955caf KM |
1833 | vput(vp); |
1834 | } | |
a5368812 | 1835 | CHECKREFS("rmdir"); |
8429d022 | 1836 | return (error); |
88a7a62a SL |
1837 | } |
1838 | ||
3d92fa10 KM |
1839 | #ifdef COMPAT_43 |
1840 | /* | |
1841 | * Read a block of directory entries in a file system independent format. | |
1842 | */ | |
9e97623a CT |
1843 | struct ogetdirentries_args { |
1844 | int fd; | |
1845 | char *buf; | |
7121fdf0 | 1846 | u_int count; |
9e97623a CT |
1847 | long *basep; |
1848 | }; | |
3d92fa10 KM |
1849 | ogetdirentries(p, uap, retval) |
1850 | struct proc *p; | |
9e97623a | 1851 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1852 | int *retval; |
1853 | { | |
3d92fa10 KM |
1854 | register struct vnode *vp; |
1855 | struct file *fp; | |
1856 | struct uio auio, kuio; | |
1857 | struct iovec aiov, kiov; | |
1858 | struct dirent *dp, *edp; | |
1859 | caddr_t dirbuf; | |
1860 | int error, readcnt; | |
d80c3f56 | 1861 | long loff; |
3d92fa10 KM |
1862 | |
1863 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1864 | return (error); | |
1865 | if ((fp->f_flag & FREAD) == 0) | |
1866 | return (EBADF); | |
1867 | vp = (struct vnode *)fp->f_data; | |
1868 | if (vp->v_type != VDIR) | |
1869 | return (EINVAL); | |
1870 | aiov.iov_base = uap->buf; | |
1871 | aiov.iov_len = uap->count; | |
1872 | auio.uio_iov = &aiov; | |
1873 | auio.uio_iovcnt = 1; | |
1874 | auio.uio_rw = UIO_READ; | |
1875 | auio.uio_segflg = UIO_USERSPACE; | |
1876 | auio.uio_procp = p; | |
1877 | auio.uio_resid = uap->count; | |
1878 | VOP_LOCK(vp); | |
d80c3f56 | 1879 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1880 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1881 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1882 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1883 | fp->f_offset = auio.uio_offset; |
1884 | } else | |
3d92fa10 KM |
1885 | # endif |
1886 | { | |
1887 | kuio = auio; | |
1888 | kuio.uio_iov = &kiov; | |
1889 | kuio.uio_segflg = UIO_SYSSPACE; | |
1890 | kiov.iov_len = uap->count; | |
1891 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1892 | kiov.iov_base = dirbuf; | |
1893 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1894 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1895 | if (error == 0) { |
1896 | readcnt = uap->count - kuio.uio_resid; | |
1897 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1898 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1899 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1900 | /* |
30445fe6 KM |
1901 | * The expected low byte of |
1902 | * dp->d_namlen is our dp->d_type. | |
1903 | * The high MBZ byte of dp->d_namlen | |
1904 | * is our dp->d_namlen. | |
d80c3f56 | 1905 | */ |
30445fe6 KM |
1906 | dp->d_type = dp->d_namlen; |
1907 | dp->d_namlen = 0; | |
1908 | # else | |
1909 | /* | |
1910 | * The dp->d_type is the high byte | |
1911 | * of the expected dp->d_namlen, | |
1912 | * so must be zero'ed. | |
1913 | */ | |
1914 | dp->d_type = 0; | |
3d92fa10 KM |
1915 | # endif |
1916 | if (dp->d_reclen > 0) { | |
1917 | dp = (struct dirent *) | |
1918 | ((char *)dp + dp->d_reclen); | |
1919 | } else { | |
1920 | error = EIO; | |
1921 | break; | |
1922 | } | |
1923 | } | |
1924 | if (dp >= edp) | |
1925 | error = uiomove(dirbuf, readcnt, &auio); | |
1926 | } | |
1927 | FREE(dirbuf, M_TEMP); | |
1928 | } | |
3d92fa10 KM |
1929 | VOP_UNLOCK(vp); |
1930 | if (error) | |
1931 | return (error); | |
d80c3f56 | 1932 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1933 | *retval = uap->count - auio.uio_resid; |
1934 | return (error); | |
1935 | } | |
1936 | #endif | |
1937 | ||
fc2aed1e | 1938 | /* |
d4ed1dcd | 1939 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1940 | */ |
9e97623a CT |
1941 | struct getdirentries_args { |
1942 | int fd; | |
1943 | char *buf; | |
7121fdf0 | 1944 | u_int count; |
9e97623a CT |
1945 | long *basep; |
1946 | }; | |
6a6a1e5f | 1947 | getdirentries(p, uap, retval) |
5e00df3b | 1948 | struct proc *p; |
9e97623a | 1949 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1950 | int *retval; |
1951 | { | |
e79467ea | 1952 | register struct vnode *vp; |
8462a185 | 1953 | struct file *fp; |
fc2aed1e KM |
1954 | struct uio auio; |
1955 | struct iovec aiov; | |
d80c3f56 | 1956 | long loff; |
09d2ef1a | 1957 | int error; |
fc2aed1e | 1958 | |
5e00df3b | 1959 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1960 | return (error); |
fc2aed1e | 1961 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1962 | return (EBADF); |
e79467ea | 1963 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1964 | unionread: |
e79467ea | 1965 | if (vp->v_type != VDIR) |
8429d022 | 1966 | return (EINVAL); |
fc2aed1e KM |
1967 | aiov.iov_base = uap->buf; |
1968 | aiov.iov_len = uap->count; | |
1969 | auio.uio_iov = &aiov; | |
1970 | auio.uio_iovcnt = 1; | |
1971 | auio.uio_rw = UIO_READ; | |
1972 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1973 | auio.uio_procp = p; |
fc2aed1e | 1974 | auio.uio_resid = uap->count; |
e79467ea | 1975 | VOP_LOCK(vp); |
d80c3f56 | 1976 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1977 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1978 | fp->f_offset = auio.uio_offset; |
1979 | VOP_UNLOCK(vp); | |
1980 | if (error) | |
8429d022 | 1981 | return (error); |
95a9cadb JSP |
1982 | if ((uap->count == auio.uio_resid) && |
1983 | (vp->v_flag & VROOT) && | |
1984 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1985 | struct vnode *tvp = vp; | |
1986 | vp = vp->v_mount->mnt_vnodecovered; | |
1987 | VREF(vp); | |
1988 | fp->f_data = (caddr_t) vp; | |
1989 | fp->f_offset = 0; | |
1990 | vrele(tvp); | |
1991 | goto unionread; | |
1992 | } | |
d80c3f56 | 1993 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1994 | *retval = uap->count - auio.uio_resid; |
8429d022 | 1995 | return (error); |
88a7a62a SL |
1996 | } |
1997 | ||
1998 | /* | |
d4ed1dcd | 1999 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 2000 | */ |
9e97623a | 2001 | struct umask_args { |
7121fdf0 | 2002 | int newmask; |
9e97623a CT |
2003 | }; |
2004 | mode_t /* XXX */ | |
6a6a1e5f | 2005 | umask(p, uap, retval) |
5e00df3b | 2006 | struct proc *p; |
9e97623a | 2007 | struct umask_args *uap; |
6a6a1e5f KM |
2008 | int *retval; |
2009 | { | |
7121fdf0 | 2010 | register struct filedesc *fdp; |
88a7a62a | 2011 | |
7121fdf0 | 2012 | fdp = p->p_fd; |
5e00df3b | 2013 | *retval = fdp->fd_cmask; |
7121fdf0 | 2014 | fdp->fd_cmask = uap->newmask & ALLPERMS; |
8429d022 | 2015 | return (0); |
fc2aed1e KM |
2016 | } |
2017 | ||
b0a98f13 MT |
2018 | /* |
2019 | * Void all references to file by ripping underlying filesystem | |
2020 | * away from vnode. | |
2021 | */ | |
9e97623a | 2022 | struct revoke_args { |
7121fdf0 | 2023 | char *path; |
9e97623a | 2024 | }; |
6a6a1e5f KM |
2025 | /* ARGSUSED */ |
2026 | revoke(p, uap, retval) | |
5e00df3b | 2027 | struct proc *p; |
9e97623a | 2028 | register struct revoke_args *uap; |
6a6a1e5f KM |
2029 | int *retval; |
2030 | { | |
b0a98f13 MT |
2031 | register struct vnode *vp; |
2032 | struct vattr vattr; | |
2033 | int error; | |
8429d022 | 2034 | struct nameidata nd; |
b0a98f13 | 2035 | |
7121fdf0 | 2036 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 2037 | if (error = namei(&nd)) |
8429d022 | 2038 | return (error); |
dd4c01c2 | 2039 | vp = nd.ni_vp; |
b0a98f13 MT |
2040 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2041 | error = EINVAL; | |
2042 | goto out; | |
2043 | } | |
2c69fe14 | 2044 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2045 | goto out; |
8429d022 MK |
2046 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2047 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2048 | goto out; |
8b81d198 | 2049 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2050 | vgoneall(vp); |
b0a98f13 MT |
2051 | out: |
2052 | vrele(vp); | |
8429d022 | 2053 | return (error); |
b0a98f13 MT |
2054 | } |
2055 | ||
d4ed1dcd KM |
2056 | /* |
2057 | * Convert a user file descriptor to a kernel file entry. | |
2058 | */ | |
7121fdf0 | 2059 | getvnode(fdp, fd, fpp) |
5e00df3b | 2060 | struct filedesc *fdp; |
fc2aed1e | 2061 | struct file **fpp; |
7121fdf0 | 2062 | int fd; |
fc2aed1e KM |
2063 | { |
2064 | struct file *fp; | |
2065 | ||
7121fdf0 KB |
2066 | if ((u_int)fd >= fdp->fd_nfiles || |
2067 | (fp = fdp->fd_ofiles[fd]) == NULL) | |
fc2aed1e KM |
2068 | return (EBADF); |
2069 | if (fp->f_type != DTYPE_VNODE) | |
2070 | return (EINVAL); | |
2071 | *fpp = fp; | |
2072 | return (0); | |
88a7a62a | 2073 | } |