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 | * |
64deb204 | 7 | * @(#)vfs_syscalls.c 7.109 (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 | |
a5368812 KM |
27 | #ifdef REF_DIAGNOSTIC |
28 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
29 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
30 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
31 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
32 | #else | |
33 | #define CHECKPOINTREF | |
34 | #define CHECKREFS(D) | |
35 | #endif | |
36 | ||
fc2aed1e KM |
37 | /* |
38 | * Virtual File System System Calls | |
39 | */ | |
3e78e260 | 40 | |
4f083fd7 | 41 | /* |
d4ed1dcd | 42 | * Mount system call. |
4f083fd7 | 43 | */ |
9e97623a CT |
44 | struct mount_args { |
45 | int type; | |
46 | char *dir; | |
47 | int flags; | |
48 | caddr_t data; | |
49 | }; | |
6a6a1e5f KM |
50 | /* ARGSUSED */ |
51 | mount(p, uap, retval) | |
5e00df3b | 52 | struct proc *p; |
9e97623a | 53 | register struct mount_args *uap; |
6a6a1e5f KM |
54 | int *retval; |
55 | { | |
d48157d5 KM |
56 | register struct vnode *vp; |
57 | register struct mount *mp; | |
47971887 | 58 | int error, flag; |
8429d022 | 59 | struct nameidata nd; |
3e78e260 | 60 | |
fc2aed1e KM |
61 | /* |
62 | * Must be super user | |
63 | */ | |
8429d022 MK |
64 | if (error = suser(p->p_ucred, &p->p_acflag)) |
65 | return (error); | |
fc2aed1e KM |
66 | /* |
67 | * Get vnode to be covered | |
68 | */ | |
dd4c01c2 KM |
69 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->dir, p); |
70 | if (error = namei(&nd)) | |
8429d022 | 71 | return (error); |
dd4c01c2 | 72 | vp = nd.ni_vp; |
54fb9dc2 | 73 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
74 | if ((vp->v_flag & VROOT) == 0) { |
75 | vput(vp); | |
8429d022 | 76 | return (EINVAL); |
d48157d5 KM |
77 | } |
78 | mp = vp->v_mount; | |
db62a40f | 79 | flag = mp->mnt_flag; |
d48157d5 | 80 | /* |
db62a40f KM |
81 | * We only allow the filesystem to be reloaded if it |
82 | * is currently mounted read-only. | |
d48157d5 | 83 | */ |
db62a40f KM |
84 | if ((uap->flags & MNT_RELOAD) && |
85 | ((mp->mnt_flag & MNT_RDONLY) == 0)) { | |
d48157d5 | 86 | vput(vp); |
8429d022 | 87 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 88 | } |
db62a40f KM |
89 | mp->mnt_flag |= |
90 | uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); | |
d48157d5 KM |
91 | VOP_UNLOCK(vp); |
92 | goto update; | |
93 | } | |
95a9cadb | 94 | if (vp->v_usecount != 1 && (uap->flags & MNT_UNION) == 0) { |
fc2aed1e | 95 | vput(vp); |
8429d022 | 96 | return (EBUSY); |
fc2aed1e | 97 | } |
c05286bd | 98 | if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) |
09d2ef1a | 99 | return (error); |
fc2aed1e KM |
100 | if (vp->v_type != VDIR) { |
101 | vput(vp); | |
8429d022 | 102 | return (ENOTDIR); |
fc2aed1e | 103 | } |
62d239e5 | 104 | if ((unsigned long)uap->type > MOUNT_MAXTYPE || |
fc2aed1e KM |
105 | vfssw[uap->type] == (struct vfsops *)0) { |
106 | vput(vp); | |
8429d022 | 107 | return (ENODEV); |
fc2aed1e KM |
108 | } |
109 | ||
110 | /* | |
d48157d5 | 111 | * Allocate and initialize the file system. |
fc2aed1e KM |
112 | */ |
113 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
114 | M_MOUNT, M_WAITOK); | |
b1341251 | 115 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 116 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
117 | if (error = vfs_lock(mp)) { |
118 | free((caddr_t)mp, M_MOUNT); | |
119 | vput(vp); | |
8429d022 | 120 | return (error); |
d48157d5 KM |
121 | } |
122 | if (vp->v_mountedhere != (struct mount *)0) { | |
123 | vfs_unlock(mp); | |
124 | free((caddr_t)mp, M_MOUNT); | |
125 | vput(vp); | |
8429d022 | 126 | return (EBUSY); |
d48157d5 | 127 | } |
d48157d5 | 128 | vp->v_mountedhere = mp; |
54fb9dc2 | 129 | mp->mnt_vnodecovered = vp; |
d48157d5 KM |
130 | update: |
131 | /* | |
132 | * Set the mount level flags. | |
133 | */ | |
54fb9dc2 KM |
134 | if (uap->flags & MNT_RDONLY) |
135 | mp->mnt_flag |= MNT_RDONLY; | |
db62a40f KM |
136 | else if (mp->mnt_flag & MNT_RDONLY) |
137 | mp->mnt_flag |= MNT_WANTRDWR; | |
138 | mp->mnt_flag &=~ | |
139 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
140 | mp->mnt_flag |= uap->flags & | |
141 | (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION); | |
d48157d5 KM |
142 | /* |
143 | * Mount the filesystem. | |
144 | */ | |
dd4c01c2 | 145 | error = VFS_MOUNT(mp, uap->dir, uap->data, &nd, p); |
54fb9dc2 | 146 | if (mp->mnt_flag & MNT_UPDATE) { |
d48157d5 | 147 | vrele(vp); |
db62a40f KM |
148 | if (mp->mnt_flag & MNT_WANTRDWR) |
149 | mp->mnt_flag &= ~MNT_RDONLY; | |
150 | mp->mnt_flag &=~ | |
151 | (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); | |
47971887 | 152 | if (error) |
54fb9dc2 | 153 | mp->mnt_flag = flag; |
8429d022 | 154 | return (error); |
d48157d5 | 155 | } |
92d0de98 KM |
156 | /* |
157 | * Put the new filesystem on the mount list after root. | |
158 | */ | |
54fb9dc2 KM |
159 | mp->mnt_next = rootfs->mnt_next; |
160 | mp->mnt_prev = rootfs; | |
161 | rootfs->mnt_next = mp; | |
162 | mp->mnt_next->mnt_prev = mp; | |
fc2aed1e | 163 | cache_purge(vp); |
fc2aed1e | 164 | if (!error) { |
d48157d5 | 165 | VOP_UNLOCK(vp); |
fc2aed1e | 166 | vfs_unlock(mp); |
2c69fe14 | 167 | error = VFS_START(mp, 0, p); |
fc2aed1e KM |
168 | } else { |
169 | vfs_remove(mp); | |
170 | free((caddr_t)mp, M_MOUNT); | |
d48157d5 | 171 | vput(vp); |
fc2aed1e | 172 | } |
8429d022 | 173 | return (error); |
3e78e260 BJ |
174 | } |
175 | ||
4f083fd7 | 176 | /* |
fc2aed1e KM |
177 | * Unmount system call. |
178 | * | |
179 | * Note: unmount takes a path to the vnode mounted on as argument, | |
180 | * not special file (as before). | |
4f083fd7 | 181 | */ |
9e97623a CT |
182 | struct unmount_args { |
183 | char *pathp; | |
184 | int flags; | |
185 | }; | |
6a6a1e5f KM |
186 | /* ARGSUSED */ |
187 | unmount(p, uap, retval) | |
5e00df3b | 188 | struct proc *p; |
9e97623a | 189 | register struct unmount_args *uap; |
6a6a1e5f KM |
190 | int *retval; |
191 | { | |
fc2aed1e | 192 | register struct vnode *vp; |
9151110e | 193 | struct mount *mp; |
fc2aed1e | 194 | int error; |
8429d022 | 195 | struct nameidata nd; |
fc2aed1e KM |
196 | |
197 | /* | |
198 | * Must be super user | |
199 | */ | |
8429d022 MK |
200 | if (error = suser(p->p_ucred, &p->p_acflag)) |
201 | return (error); | |
fc2aed1e | 202 | |
dd4c01c2 KM |
203 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->pathp, p); |
204 | if (error = namei(&nd)) | |
8429d022 | 205 | return (error); |
dd4c01c2 | 206 | vp = nd.ni_vp; |
fc2aed1e KM |
207 | /* |
208 | * Must be the root of the filesystem | |
209 | */ | |
210 | if ((vp->v_flag & VROOT) == 0) { | |
211 | vput(vp); | |
8429d022 | 212 | return (EINVAL); |
fc2aed1e KM |
213 | } |
214 | mp = vp->v_mount; | |
215 | vput(vp); | |
2c69fe14 | 216 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
217 | } |
218 | ||
219 | /* | |
220 | * Do an unmount. | |
221 | */ | |
2c69fe14 | 222 | dounmount(mp, flags, p) |
9151110e KM |
223 | register struct mount *mp; |
224 | int flags; | |
2c69fe14 | 225 | struct proc *p; |
9151110e KM |
226 | { |
227 | struct vnode *coveredvp; | |
228 | int error; | |
229 | ||
54fb9dc2 | 230 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
231 | if (vfs_busy(mp)) |
232 | return (EBUSY); | |
54fb9dc2 | 233 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 234 | if (error = vfs_lock(mp)) |
9151110e | 235 | return (error); |
fc2aed1e | 236 | |
9db58063 | 237 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 238 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
239 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
240 | (flags & MNT_FORCE)) | |
2c69fe14 | 241 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 242 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 243 | vfs_unbusy(mp); |
fc2aed1e KM |
244 | if (error) { |
245 | vfs_unlock(mp); | |
246 | } else { | |
247 | vrele(coveredvp); | |
248 | vfs_remove(mp); | |
ea2761aa KM |
249 | if (mp->mnt_mounth != NULL) |
250 | panic("unmount: dangling vnode"); | |
fc2aed1e KM |
251 | free((caddr_t)mp, M_MOUNT); |
252 | } | |
9151110e | 253 | return (error); |
fc2aed1e KM |
254 | } |
255 | ||
256 | /* | |
257 | * Sync system call. | |
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 | /* |
d4ed1dcd | 300 | * Operate on 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 CT |
472 | struct chdir_args { |
473 | char *fname; | |
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 | |
dd4c01c2 | 485 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 486 | if (error = chdirec(&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 CT |
496 | struct chroot_args { |
497 | char *fname; | |
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); | |
dd4c01c2 | 511 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 512 | if (error = chdirec(&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 | */ | |
8429d022 | 523 | chdirec(ndp, p) |
dd4c01c2 | 524 | register struct nameidata *ndp; |
8429d022 | 525 | struct proc *p; |
fc2aed1e KM |
526 | { |
527 | struct vnode *vp; | |
528 | int error; | |
529 | ||
dd4c01c2 | 530 | if (error = namei(ndp)) |
fc2aed1e KM |
531 | return (error); |
532 | vp = ndp->ni_vp; | |
533 | if (vp->v_type != VDIR) | |
534 | error = ENOTDIR; | |
535 | else | |
2c69fe14 | 536 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
537 | VOP_UNLOCK(vp); |
538 | if (error) | |
539 | vrele(vp); | |
540 | return (error); | |
3e78e260 BJ |
541 | } |
542 | ||
543 | /* | |
544 | * Open system call. | |
6a6a1e5f KM |
545 | * Check permissions, allocate an open file structure, |
546 | * and call the device open routine if any. | |
3e78e260 | 547 | */ |
9e97623a CT |
548 | struct open_args { |
549 | char *fname; | |
550 | int mode; | |
551 | int crtmode; | |
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; |
6a6a1e5f | 561 | int fmode, 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; |
13b8b20b | 571 | fmode = FFLAGS(uap->mode); |
5e00df3b | 572 | cmode = ((uap->crtmode &~ fdp->fd_cmask) & 07777) &~ S_ISVTX; |
dd4c01c2 | 573 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
03951846 | 574 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
dd4c01c2 | 575 | if (error = vn_open(&nd, fmode, cmode)) { |
336f999d | 576 | ffree(fp); |
f0e12026 KM |
577 | if ((error == ENODEV || error == ENXIO) && |
578 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
da5acac3 JSP |
579 | (error = dupfdopen(fdp, indx, p->p_dupfd, |
580 | fmode, 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; |
b40ecf6f | 591 | fp->f_flag = fmode & FMASK; |
8932276d KM |
592 | fp->f_type = DTYPE_VNODE; |
593 | fp->f_ops = &vnops; | |
594 | fp->f_data = (caddr_t)vp; | |
ff8d1617 KM |
595 | if (fmode & (O_EXLOCK | O_SHLOCK)) { |
596 | lf.l_whence = SEEK_SET; | |
597 | lf.l_start = 0; | |
598 | lf.l_len = 0; | |
599 | if (fmode & O_EXLOCK) | |
600 | lf.l_type = F_WRLCK; | |
601 | else | |
602 | lf.l_type = F_RDLCK; | |
603 | type = F_FLOCK; | |
604 | if ((fmode & FNONBLOCK) == 0) | |
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 | /* |
6a6a1e5f | 622 | * Creat system call. |
3e78e260 | 623 | */ |
9e97623a CT |
624 | struct ocreat_args { |
625 | char *fname; | |
626 | int fmode; | |
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 KM |
634 | |
635 | openuap.fname = uap->fname; | |
636 | openuap.crtmode = uap->fmode; | |
637 | openuap.mode = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 638 | return (open(p, &openuap, retval)); |
6a6a1e5f | 639 | } |
4fde03dc | 640 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
641 | |
642 | /* | |
d4ed1dcd | 643 | * Mknod system call. |
6a6a1e5f | 644 | */ |
9e97623a CT |
645 | struct mknod_args { |
646 | char *fname; | |
647 | int fmode; | |
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); | |
dd4c01c2 KM |
664 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
665 | if (error = namei(&nd)) | |
8429d022 | 666 | return (error); |
dd4c01c2 | 667 | vp = nd.ni_vp; |
fc2aed1e KM |
668 | if (vp != NULL) { |
669 | error = EEXIST; | |
88a7a62a | 670 | goto out; |
3e78e260 | 671 | } |
3ee1461b | 672 | VATTR_NULL(&vattr); |
ab389897 | 673 | switch (uap->fmode & S_IFMT) { |
88a7a62a | 674 | |
ab389897 | 675 | case S_IFMT: /* used by badsect to flag bad sectors */ |
fc2aed1e KM |
676 | vattr.va_type = VBAD; |
677 | break; | |
ab389897 | 678 | case S_IFCHR: |
fc2aed1e KM |
679 | vattr.va_type = VCHR; |
680 | break; | |
ab389897 | 681 | case S_IFBLK: |
fc2aed1e KM |
682 | vattr.va_type = VBLK; |
683 | break; | |
684 | default: | |
685 | error = EINVAL; | |
686 | goto out; | |
3e78e260 | 687 | } |
5e00df3b | 688 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
fc2aed1e | 689 | vattr.va_rdev = uap->dev; |
3e78e260 | 690 | out: |
66955caf | 691 | if (!error) { |
dd4c01c2 KM |
692 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
693 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 694 | } else { |
dd4c01c2 KM |
695 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
696 | if (nd.ni_dvp == vp) | |
697 | vrele(nd.ni_dvp); | |
6c44e83b | 698 | else |
dd4c01c2 | 699 | vput(nd.ni_dvp); |
66955caf KM |
700 | if (vp) |
701 | vrele(vp); | |
702 | } | |
a5368812 | 703 | CHECKREFS("mknod"); |
8429d022 | 704 | return (error); |
3e78e260 BJ |
705 | } |
706 | ||
4751dd21 | 707 | /* |
d4ed1dcd | 708 | * Mkfifo system call. |
4751dd21 | 709 | */ |
9e97623a CT |
710 | struct mkfifo_args { |
711 | char *fname; | |
712 | int fmode; | |
713 | }; | |
6a6a1e5f KM |
714 | /* ARGSUSED */ |
715 | mkfifo(p, uap, retval) | |
5e00df3b | 716 | struct proc *p; |
9e97623a | 717 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
718 | int *retval; |
719 | { | |
4751dd21 KM |
720 | struct vattr vattr; |
721 | int error; | |
8429d022 | 722 | struct nameidata nd; |
4751dd21 KM |
723 | |
724 | #ifndef FIFO | |
8429d022 | 725 | return (EOPNOTSUPP); |
4751dd21 | 726 | #else |
dd4c01c2 KM |
727 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
728 | if (error = namei(&nd)) | |
8429d022 | 729 | return (error); |
dd4c01c2 KM |
730 | if (nd.ni_vp != NULL) { |
731 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
732 | if (nd.ni_dvp == nd.ni_vp) | |
733 | vrele(nd.ni_dvp); | |
6c44e83b | 734 | else |
dd4c01c2 KM |
735 | vput(nd.ni_dvp); |
736 | vrele(nd.ni_vp); | |
8429d022 | 737 | return (EEXIST); |
4751dd21 | 738 | } |
3658f091 KB |
739 | VATTR_NULL(&vattr); |
740 | vattr.va_type = VFIFO; | |
5e00df3b | 741 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
742 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
743 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
744 | #endif /* FIFO */ |
745 | } | |
746 | ||
3e78e260 | 747 | /* |
d4ed1dcd | 748 | * Link system call. |
3e78e260 | 749 | */ |
9e97623a CT |
750 | struct link_args { |
751 | char *target; | |
752 | char *linkname; | |
753 | }; | |
6a6a1e5f KM |
754 | /* ARGSUSED */ |
755 | link(p, uap, retval) | |
5e00df3b | 756 | struct proc *p; |
9e97623a | 757 | register struct link_args *uap; |
6a6a1e5f KM |
758 | int *retval; |
759 | { | |
fc2aed1e KM |
760 | register struct vnode *vp, *xp; |
761 | int error; | |
8429d022 | 762 | struct nameidata nd; |
3e78e260 | 763 | |
a5368812 | 764 | CHECKPOINTREF; |
dd4c01c2 KM |
765 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->target, p); |
766 | if (error = namei(&nd)) | |
8429d022 | 767 | return (error); |
dd4c01c2 | 768 | vp = nd.ni_vp; |
fc2aed1e | 769 | if (vp->v_type == VDIR && |
8429d022 | 770 | (error = suser(p->p_ucred, &p->p_acflag))) |
fc2aed1e | 771 | goto out1; |
dd4c01c2 KM |
772 | nd.ni_cnd.cn_nameiop = CREATE; |
773 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
774 | nd.ni_dirp = (caddr_t)uap->linkname; | |
775 | if (error = namei(&nd)) | |
fc2aed1e | 776 | goto out1; |
dd4c01c2 | 777 | xp = nd.ni_vp; |
3e78e260 | 778 | if (xp != NULL) { |
fc2aed1e | 779 | error = EEXIST; |
3e78e260 BJ |
780 | goto out; |
781 | } | |
dd4c01c2 | 782 | xp = nd.ni_dvp; |
3e78e260 | 783 | out: |
66955caf | 784 | if (!error) { |
e62d4143 KM |
785 | LEASE_CHECK(xp, p, p->p_ucred, LEASE_WRITE); |
786 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); | |
532a2b44 | 787 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); |
66955caf | 788 | } else { |
dd4c01c2 KM |
789 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
790 | if (nd.ni_dvp == nd.ni_vp) | |
791 | vrele(nd.ni_dvp); | |
6c44e83b | 792 | else |
dd4c01c2 KM |
793 | vput(nd.ni_dvp); |
794 | if (nd.ni_vp) | |
795 | vrele(nd.ni_vp); | |
66955caf | 796 | } |
fc2aed1e KM |
797 | out1: |
798 | vrele(vp); | |
a5368812 | 799 | CHECKREFS("link"); |
8429d022 | 800 | return (error); |
3e78e260 BJ |
801 | } |
802 | ||
803 | /* | |
d4ed1dcd | 804 | * Make a symbolic link. |
3e78e260 | 805 | */ |
9e97623a CT |
806 | struct symlink_args { |
807 | char *target; | |
808 | char *linkname; | |
809 | }; | |
6a6a1e5f KM |
810 | /* ARGSUSED */ |
811 | symlink(p, uap, retval) | |
5e00df3b | 812 | struct proc *p; |
9e97623a | 813 | register struct symlink_args *uap; |
6a6a1e5f KM |
814 | int *retval; |
815 | { | |
fc2aed1e KM |
816 | struct vattr vattr; |
817 | char *target; | |
818 | int error; | |
8429d022 | 819 | struct nameidata nd; |
3e78e260 | 820 | |
a5368812 | 821 | CHECKPOINTREF; |
fc2aed1e KM |
822 | MALLOC(target, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
823 | if (error = copyinstr(uap->target, target, MAXPATHLEN, (u_int *)0)) | |
66955caf | 824 | goto out; |
dd4c01c2 KM |
825 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->linkname, p); |
826 | if (error = namei(&nd)) | |
66955caf | 827 | goto out; |
dd4c01c2 KM |
828 | if (nd.ni_vp) { |
829 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
830 | if (nd.ni_dvp == nd.ni_vp) | |
831 | vrele(nd.ni_dvp); | |
6c44e83b | 832 | else |
dd4c01c2 KM |
833 | vput(nd.ni_dvp); |
834 | vrele(nd.ni_vp); | |
fc2aed1e KM |
835 | error = EEXIST; |
836 | goto out; | |
3e78e260 | 837 | } |
3ee1461b | 838 | VATTR_NULL(&vattr); |
5e00df3b | 839 | vattr.va_mode = 0777 &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
840 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
841 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, target); | |
fc2aed1e | 842 | out: |
fc2aed1e | 843 | FREE(target, M_NAMEI); |
a5368812 | 844 | CHECKREFS("symlink"); |
8429d022 | 845 | return (error); |
3e78e260 BJ |
846 | } |
847 | ||
848 | /* | |
d4ed1dcd | 849 | * Delete a name from the filesystem. |
3e78e260 | 850 | */ |
9e97623a CT |
851 | struct unlink_args { |
852 | char *name; | |
853 | }; | |
6a6a1e5f KM |
854 | /* ARGSUSED */ |
855 | unlink(p, uap, retval) | |
5e00df3b | 856 | struct proc *p; |
9e97623a | 857 | struct unlink_args *uap; |
6a6a1e5f KM |
858 | int *retval; |
859 | { | |
fc2aed1e KM |
860 | register struct vnode *vp; |
861 | int error; | |
8429d022 | 862 | struct nameidata nd; |
3e78e260 | 863 | |
a5368812 | 864 | CHECKPOINTREF; |
dbcf7de6 | 865 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
dd4c01c2 | 866 | if (error = namei(&nd)) |
8429d022 | 867 | return (error); |
dd4c01c2 | 868 | vp = nd.ni_vp; |
dbcf7de6 KM |
869 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
870 | VOP_LOCK(vp); | |
fc2aed1e | 871 | if (vp->v_type == VDIR && |
8429d022 | 872 | (error = suser(p->p_ucred, &p->p_acflag))) |
3e78e260 BJ |
873 | goto out; |
874 | /* | |
d4ed1dcd | 875 | * The root of a mounted filesystem cannot be deleted. |
3e78e260 | 876 | */ |
fc2aed1e KM |
877 | if (vp->v_flag & VROOT) { |
878 | error = EBUSY; | |
3e78e260 BJ |
879 | goto out; |
880 | } | |
9db58063 | 881 | (void) vnode_pager_uncache(vp); |
3e78e260 | 882 | out: |
66955caf | 883 | if (!error) { |
dd4c01c2 | 884 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 885 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 886 | } else { |
dd4c01c2 KM |
887 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
888 | if (nd.ni_dvp == vp) | |
889 | vrele(nd.ni_dvp); | |
6c44e83b | 890 | else |
dd4c01c2 | 891 | vput(nd.ni_dvp); |
66955caf KM |
892 | vput(vp); |
893 | } | |
a5368812 | 894 | CHECKREFS("unlink"); |
8429d022 | 895 | return (error); |
3e78e260 BJ |
896 | } |
897 | ||
9e97623a | 898 | struct __lseek_args { |
2f2b3b3d CT |
899 | int fdes; |
900 | int pad; | |
901 | off_t off; | |
902 | int sbase; | |
903 | }; | |
904 | ||
be320a2b KM |
905 | /* |
906 | * Seek system call. | |
907 | */ | |
ae9b6dc3 | 908 | __lseek(p, uap, retval) |
5e00df3b | 909 | struct proc *p; |
9e97623a CT |
910 | register struct __lseek_args *uap; |
911 | int *retval; | |
6a6a1e5f | 912 | { |
8429d022 | 913 | struct ucred *cred = p->p_ucred; |
5e00df3b | 914 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 915 | register struct file *fp; |
fc2aed1e KM |
916 | struct vattr vattr; |
917 | int error; | |
918 | ||
8429d022 | 919 | if ((unsigned)uap->fdes >= fdp->fd_nfiles || |
78eeb014 | 920 | (fp = fdp->fd_ofiles[uap->fdes]) == NULL) |
8429d022 | 921 | return (EBADF); |
fc2aed1e | 922 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 923 | return (ESPIPE); |
b4d1aee9 SL |
924 | switch (uap->sbase) { |
925 | ||
926 | case L_INCR: | |
927 | fp->f_offset += uap->off; | |
928 | break; | |
929 | ||
930 | case L_XTND: | |
fc2aed1e | 931 | if (error = VOP_GETATTR((struct vnode *)fp->f_data, |
2c69fe14 | 932 | &vattr, cred, p)) |
8429d022 | 933 | return (error); |
fc2aed1e | 934 | fp->f_offset = uap->off + vattr.va_size; |
b4d1aee9 SL |
935 | break; |
936 | ||
937 | case L_SET: | |
938 | fp->f_offset = uap->off; | |
939 | break; | |
940 | ||
941 | default: | |
8429d022 | 942 | return (EINVAL); |
b4d1aee9 | 943 | } |
9e97623a | 944 | *(off_t *)retval = fp->f_offset; |
8429d022 | 945 | return (0); |
3e78e260 BJ |
946 | } |
947 | ||
64deb204 KM |
948 | /* |
949 | * Old lseek system call. | |
950 | * | |
951 | * XXX should be COMPAT_43, but too much breaks. | |
952 | */ | |
953 | struct lseek_args { | |
954 | int fdes; | |
955 | long off; | |
956 | int sbase; | |
957 | }; | |
958 | lseek(p, uap, retval) | |
959 | struct proc *p; | |
960 | register struct lseek_args *uap; | |
961 | int *retval; | |
962 | { | |
963 | struct __lseek_args nuap; | |
964 | off_t qret; | |
965 | int error; | |
966 | ||
967 | nuap.fdes = uap->fdes; | |
968 | nuap.off = uap->off; | |
969 | nuap.sbase = uap->sbase; | |
970 | error = __lseek(p, &nuap, &qret); | |
971 | *(long *)retval = qret; | |
972 | return (error); | |
973 | } | |
974 | ||
3e78e260 | 975 | /* |
d4ed1dcd | 976 | * Check access permissions. |
3e78e260 | 977 | */ |
9e97623a CT |
978 | struct saccess_args { |
979 | char *fname; | |
980 | int fmode; | |
981 | }; | |
6a6a1e5f KM |
982 | /* ARGSUSED */ |
983 | saccess(p, uap, retval) | |
5e00df3b | 984 | struct proc *p; |
9e97623a | 985 | register struct saccess_args *uap; |
6a6a1e5f KM |
986 | int *retval; |
987 | { | |
8429d022 | 988 | register struct ucred *cred = p->p_ucred; |
fc2aed1e KM |
989 | register struct vnode *vp; |
990 | int error, mode, svuid, svgid; | |
8429d022 | 991 | struct nameidata nd; |
3e78e260 | 992 | |
6a6a1e5f KM |
993 | svuid = cred->cr_uid; |
994 | svgid = cred->cr_groups[0]; | |
8429d022 MK |
995 | cred->cr_uid = p->p_cred->p_ruid; |
996 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
dd4c01c2 KM |
997 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
998 | if (error = namei(&nd)) | |
fc2aed1e | 999 | goto out1; |
dd4c01c2 | 1000 | vp = nd.ni_vp; |
fc2aed1e KM |
1001 | /* |
1002 | * fmode == 0 means only check for exist | |
1003 | */ | |
1004 | if (uap->fmode) { | |
1005 | mode = 0; | |
1006 | if (uap->fmode & R_OK) | |
1007 | mode |= VREAD; | |
1008 | if (uap->fmode & W_OK) | |
1009 | mode |= VWRITE; | |
1010 | if (uap->fmode & X_OK) | |
1011 | mode |= VEXEC; | |
9230ead4 | 1012 | if ((mode & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) |
2c69fe14 | 1013 | error = VOP_ACCESS(vp, mode, cred, p); |
3e78e260 | 1014 | } |
fc2aed1e KM |
1015 | vput(vp); |
1016 | out1: | |
6a6a1e5f KM |
1017 | cred->cr_uid = svuid; |
1018 | cred->cr_groups[0] = svgid; | |
8429d022 | 1019 | return (error); |
3e78e260 | 1020 | } |
d67a03eb | 1021 | |
8932276d | 1022 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1023 | /* |
d4ed1dcd KM |
1024 | * Stat system call. |
1025 | * This version follows links. | |
d67a03eb | 1026 | */ |
9e97623a CT |
1027 | struct ostat_args { |
1028 | char *fname; | |
1029 | struct ostat *ub; | |
1030 | }; | |
6a6a1e5f | 1031 | /* ARGSUSED */ |
ae9b6dc3 | 1032 | ostat(p, uap, retval) |
be320a2b | 1033 | struct proc *p; |
9e97623a | 1034 | register struct ostat_args *uap; |
be320a2b KM |
1035 | int *retval; |
1036 | { | |
1037 | struct stat sb; | |
1038 | struct ostat osb; | |
1039 | int error; | |
1040 | struct nameidata nd; | |
1041 | ||
1042 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1043 | if (error = namei(&nd)) | |
1044 | return (error); | |
1045 | error = vn_stat(nd.ni_vp, &sb, p); | |
1046 | vput(nd.ni_vp); | |
1047 | if (error) | |
1048 | return (error); | |
1049 | cvtstat(&sb, &osb); | |
1050 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1051 | return (error); | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * Lstat system call. | |
1056 | * This version does not follow links. | |
1057 | */ | |
9e97623a CT |
1058 | struct olstat_args { |
1059 | char *fname; | |
1060 | struct ostat *ub; | |
1061 | }; | |
be320a2b | 1062 | /* ARGSUSED */ |
ae9b6dc3 | 1063 | olstat(p, uap, retval) |
be320a2b | 1064 | struct proc *p; |
9e97623a | 1065 | register struct olstat_args *uap; |
be320a2b KM |
1066 | int *retval; |
1067 | { | |
1068 | struct stat sb; | |
1069 | struct ostat osb; | |
1070 | int error; | |
1071 | struct nameidata nd; | |
1072 | ||
1073 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); | |
1074 | if (error = namei(&nd)) | |
1075 | return (error); | |
1076 | error = vn_stat(nd.ni_vp, &sb, p); | |
1077 | vput(nd.ni_vp); | |
1078 | if (error) | |
1079 | return (error); | |
1080 | cvtstat(&sb, &osb); | |
1081 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1082 | return (error); | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * convert from an old to a new stat structure. | |
1087 | */ | |
1088 | cvtstat(st, ost) | |
1089 | struct stat *st; | |
1090 | struct ostat *ost; | |
1091 | { | |
1092 | ||
1093 | ost->st_dev = st->st_dev; | |
1094 | ost->st_ino = st->st_ino; | |
1095 | ost->st_mode = st->st_mode; | |
1096 | ost->st_nlink = st->st_nlink; | |
1097 | ost->st_uid = st->st_uid; | |
1098 | ost->st_gid = st->st_gid; | |
1099 | ost->st_rdev = st->st_rdev; | |
1100 | if (st->st_size < (quad_t)1 << 32) | |
1101 | ost->st_size = st->st_size; | |
1102 | else | |
1103 | ost->st_size = -2; | |
1104 | ost->st_atime = st->st_atime; | |
1105 | ost->st_mtime = st->st_mtime; | |
1106 | ost->st_ctime = st->st_ctime; | |
1107 | ost->st_blksize = st->st_blksize; | |
1108 | ost->st_blocks = st->st_blocks; | |
1109 | ost->st_flags = st->st_flags; | |
1110 | ost->st_gen = st->st_gen; | |
1111 | } | |
8932276d | 1112 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1113 | |
1114 | /* | |
1115 | * Stat system call. | |
1116 | * This version follows links. | |
1117 | */ | |
9e97623a CT |
1118 | struct stat_args { |
1119 | char *fname; | |
1120 | struct stat *ub; | |
1121 | }; | |
be320a2b | 1122 | /* ARGSUSED */ |
ae9b6dc3 | 1123 | stat(p, uap, retval) |
5e00df3b | 1124 | struct proc *p; |
9e97623a | 1125 | register struct stat_args *uap; |
6a6a1e5f | 1126 | int *retval; |
d67a03eb | 1127 | { |
6a6a1e5f KM |
1128 | struct stat sb; |
1129 | int error; | |
8429d022 | 1130 | struct nameidata nd; |
d67a03eb | 1131 | |
dd4c01c2 KM |
1132 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1133 | if (error = namei(&nd)) | |
8429d022 | 1134 | return (error); |
dd4c01c2 KM |
1135 | error = vn_stat(nd.ni_vp, &sb, p); |
1136 | vput(nd.ni_vp); | |
6a6a1e5f | 1137 | if (error) |
8429d022 | 1138 | return (error); |
6a6a1e5f | 1139 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1140 | return (error); |
d67a03eb BJ |
1141 | } |
1142 | ||
5485e062 | 1143 | /* |
d4ed1dcd KM |
1144 | * Lstat system call. |
1145 | * This version does not follow links. | |
5485e062 | 1146 | */ |
9e97623a CT |
1147 | struct lstat_args { |
1148 | char *fname; | |
1149 | struct stat *ub; | |
1150 | }; | |
6a6a1e5f | 1151 | /* ARGSUSED */ |
ae9b6dc3 | 1152 | lstat(p, uap, retval) |
5e00df3b | 1153 | struct proc *p; |
9e97623a | 1154 | register struct lstat_args *uap; |
6a6a1e5f KM |
1155 | int *retval; |
1156 | { | |
fc2aed1e | 1157 | int error; |
49f762b8 KM |
1158 | struct vnode *vp, *dvp; |
1159 | struct stat sb, sb1; | |
8429d022 | 1160 | struct nameidata nd; |
5485e062 | 1161 | |
49f762b8 KM |
1162 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
1163 | uap->fname, p); | |
dd4c01c2 | 1164 | if (error = namei(&nd)) |
8429d022 | 1165 | return (error); |
49f762b8 KM |
1166 | /* |
1167 | * For symbolic links, always return the attributes of its | |
1168 | * containing directory, except for mode, size, and links. | |
1169 | */ | |
1170 | vp = nd.ni_vp; | |
1171 | dvp = nd.ni_dvp; | |
1172 | if (vp->v_type != VLNK) { | |
1173 | if (dvp == vp) | |
1174 | vrele(dvp); | |
1175 | else | |
1176 | vput(dvp); | |
1177 | error = vn_stat(vp, &sb, p); | |
1178 | vput(vp); | |
1179 | if (error) | |
1180 | return (error); | |
1181 | } else { | |
1182 | error = vn_stat(dvp, &sb, p); | |
1183 | vput(dvp); | |
1184 | if (error) { | |
1185 | vput(vp); | |
1186 | return (error); | |
1187 | } | |
1188 | error = vn_stat(vp, &sb1, p); | |
1189 | vput(vp); | |
1190 | if (error) | |
1191 | return (error); | |
1192 | sb.st_mode &= ~S_IFDIR; | |
1193 | sb.st_mode |= S_IFLNK; | |
1194 | sb.st_nlink = sb1.st_nlink; | |
1195 | sb.st_size = sb1.st_size; | |
1196 | sb.st_blocks = sb1.st_blocks; | |
1197 | } | |
fc2aed1e | 1198 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1199 | return (error); |
d67a03eb BJ |
1200 | } |
1201 | ||
1202 | /* | |
d4ed1dcd | 1203 | * Return target name of a symbolic link. |
5485e062 | 1204 | */ |
9e97623a CT |
1205 | struct readlink_args { |
1206 | char *name; | |
1207 | char *buf; | |
1208 | int count; | |
1209 | }; | |
6a6a1e5f KM |
1210 | /* ARGSUSED */ |
1211 | readlink(p, uap, retval) | |
5e00df3b | 1212 | struct proc *p; |
9e97623a | 1213 | register struct readlink_args *uap; |
6a6a1e5f KM |
1214 | int *retval; |
1215 | { | |
fc2aed1e KM |
1216 | register struct vnode *vp; |
1217 | struct iovec aiov; | |
1218 | struct uio auio; | |
1219 | int error; | |
8429d022 | 1220 | struct nameidata nd; |
5485e062 | 1221 | |
a5368812 | 1222 | CHECKPOINTREF; |
dd4c01c2 KM |
1223 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1224 | if (error = namei(&nd)) | |
8429d022 | 1225 | return (error); |
dd4c01c2 | 1226 | vp = nd.ni_vp; |
fc2aed1e KM |
1227 | if (vp->v_type != VLNK) { |
1228 | error = EINVAL; | |
5485e062 BJ |
1229 | goto out; |
1230 | } | |
fc2aed1e KM |
1231 | aiov.iov_base = uap->buf; |
1232 | aiov.iov_len = uap->count; | |
1233 | auio.uio_iov = &aiov; | |
1234 | auio.uio_iovcnt = 1; | |
1235 | auio.uio_offset = 0; | |
1236 | auio.uio_rw = UIO_READ; | |
1237 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1238 | auio.uio_procp = p; |
fc2aed1e | 1239 | auio.uio_resid = uap->count; |
8429d022 | 1240 | error = VOP_READLINK(vp, &auio, p->p_ucred); |
5485e062 | 1241 | out: |
fc2aed1e | 1242 | vput(vp); |
6a6a1e5f | 1243 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1244 | CHECKREFS("readlink"); |
8429d022 | 1245 | return (error); |
5485e062 BJ |
1246 | } |
1247 | ||
6995a2cb KM |
1248 | /* |
1249 | * Change flags of a file given path name. | |
1250 | */ | |
9e97623a CT |
1251 | struct chflags_args { |
1252 | char *fname; | |
1253 | int flags; | |
1254 | }; | |
6a6a1e5f KM |
1255 | /* ARGSUSED */ |
1256 | chflags(p, uap, retval) | |
5e00df3b | 1257 | struct proc *p; |
9e97623a | 1258 | register struct chflags_args *uap; |
6a6a1e5f KM |
1259 | int *retval; |
1260 | { | |
6995a2cb KM |
1261 | register struct vnode *vp; |
1262 | struct vattr vattr; | |
1263 | int error; | |
8429d022 | 1264 | struct nameidata nd; |
6995a2cb | 1265 | |
dbcf7de6 | 1266 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1267 | if (error = namei(&nd)) |
8429d022 | 1268 | return (error); |
dd4c01c2 | 1269 | vp = nd.ni_vp; |
dbcf7de6 KM |
1270 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1271 | VOP_LOCK(vp); | |
54fb9dc2 | 1272 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1273 | error = EROFS; |
1274 | goto out; | |
1275 | } | |
3658f091 KB |
1276 | VATTR_NULL(&vattr); |
1277 | vattr.va_flags = uap->flags; | |
2c69fe14 | 1278 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1279 | out: |
1280 | vput(vp); | |
8429d022 | 1281 | return (error); |
6995a2cb KM |
1282 | } |
1283 | ||
1284 | /* | |
1285 | * Change flags of a file given a file descriptor. | |
1286 | */ | |
9e97623a CT |
1287 | struct fchflags_args { |
1288 | int fd; | |
1289 | int flags; | |
1290 | }; | |
6a6a1e5f KM |
1291 | /* ARGSUSED */ |
1292 | fchflags(p, uap, retval) | |
5e00df3b | 1293 | struct proc *p; |
9e97623a | 1294 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1295 | int *retval; |
1296 | { | |
6995a2cb KM |
1297 | struct vattr vattr; |
1298 | struct vnode *vp; | |
1299 | struct file *fp; | |
1300 | int error; | |
1301 | ||
5e00df3b | 1302 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1303 | return (error); |
6995a2cb | 1304 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1305 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1306 | VOP_LOCK(vp); |
54fb9dc2 | 1307 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1308 | error = EROFS; |
1309 | goto out; | |
1310 | } | |
3658f091 KB |
1311 | VATTR_NULL(&vattr); |
1312 | vattr.va_flags = uap->flags; | |
2c69fe14 | 1313 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1314 | out: |
1315 | VOP_UNLOCK(vp); | |
8429d022 | 1316 | return (error); |
6995a2cb KM |
1317 | } |
1318 | ||
4f083fd7 SL |
1319 | /* |
1320 | * Change mode of a file given path name. | |
1321 | */ | |
9e97623a CT |
1322 | struct chmod_args { |
1323 | char *fname; | |
1324 | int fmode; | |
1325 | }; | |
6a6a1e5f KM |
1326 | /* ARGSUSED */ |
1327 | chmod(p, uap, retval) | |
5e00df3b | 1328 | struct proc *p; |
9e97623a | 1329 | register struct chmod_args *uap; |
6a6a1e5f KM |
1330 | int *retval; |
1331 | { | |
fc2aed1e KM |
1332 | register struct vnode *vp; |
1333 | struct vattr vattr; | |
1334 | int error; | |
8429d022 | 1335 | struct nameidata nd; |
5485e062 | 1336 | |
dbcf7de6 | 1337 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1338 | if (error = namei(&nd)) |
8429d022 | 1339 | return (error); |
dd4c01c2 | 1340 | vp = nd.ni_vp; |
dbcf7de6 KM |
1341 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1342 | VOP_LOCK(vp); | |
54fb9dc2 | 1343 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1344 | error = EROFS; |
1345 | goto out; | |
1346 | } | |
3658f091 KB |
1347 | VATTR_NULL(&vattr); |
1348 | vattr.va_mode = uap->fmode & 07777; | |
2c69fe14 | 1349 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1350 | out: |
1351 | vput(vp); | |
8429d022 | 1352 | return (error); |
528f664c | 1353 | } |
f94ceb3b | 1354 | |
4f083fd7 SL |
1355 | /* |
1356 | * Change mode of a file given a file descriptor. | |
1357 | */ | |
9e97623a CT |
1358 | struct fchmod_args { |
1359 | int fd; | |
1360 | int fmode; | |
1361 | }; | |
6a6a1e5f KM |
1362 | /* ARGSUSED */ |
1363 | fchmod(p, uap, retval) | |
5e00df3b | 1364 | struct proc *p; |
9e97623a | 1365 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1366 | int *retval; |
1367 | { | |
fc2aed1e KM |
1368 | struct vattr vattr; |
1369 | struct vnode *vp; | |
1370 | struct file *fp; | |
1371 | int error; | |
1372 | ||
5e00df3b | 1373 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1374 | return (error); |
fc2aed1e | 1375 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1376 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1377 | VOP_LOCK(vp); |
54fb9dc2 | 1378 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1379 | error = EROFS; |
1380 | goto out; | |
f94ceb3b | 1381 | } |
3658f091 KB |
1382 | VATTR_NULL(&vattr); |
1383 | vattr.va_mode = uap->fmode & 07777; | |
2c69fe14 | 1384 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1385 | out: |
1386 | VOP_UNLOCK(vp); | |
8429d022 | 1387 | return (error); |
5485e062 BJ |
1388 | } |
1389 | ||
4f083fd7 SL |
1390 | /* |
1391 | * Set ownership given a path name. | |
1392 | */ | |
9e97623a CT |
1393 | struct chown_args { |
1394 | char *fname; | |
1395 | int uid; | |
1396 | int gid; | |
1397 | }; | |
6a6a1e5f KM |
1398 | /* ARGSUSED */ |
1399 | chown(p, uap, retval) | |
5e00df3b | 1400 | struct proc *p; |
9e97623a | 1401 | register struct chown_args *uap; |
6a6a1e5f KM |
1402 | int *retval; |
1403 | { | |
fc2aed1e KM |
1404 | register struct vnode *vp; |
1405 | struct vattr vattr; | |
1406 | int error; | |
8429d022 | 1407 | struct nameidata nd; |
d67a03eb | 1408 | |
dbcf7de6 | 1409 | NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1410 | if (error = namei(&nd)) |
8429d022 | 1411 | return (error); |
dd4c01c2 | 1412 | vp = nd.ni_vp; |
dbcf7de6 KM |
1413 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1414 | VOP_LOCK(vp); | |
54fb9dc2 | 1415 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1416 | error = EROFS; |
1417 | goto out; | |
1418 | } | |
3658f091 KB |
1419 | VATTR_NULL(&vattr); |
1420 | vattr.va_uid = uap->uid; | |
1421 | vattr.va_gid = uap->gid; | |
2c69fe14 | 1422 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1423 | out: |
1424 | vput(vp); | |
8429d022 | 1425 | return (error); |
528f664c | 1426 | } |
f94ceb3b | 1427 | |
4f083fd7 SL |
1428 | /* |
1429 | * Set ownership given a file descriptor. | |
1430 | */ | |
9e97623a CT |
1431 | struct fchown_args { |
1432 | int fd; | |
1433 | int uid; | |
1434 | int gid; | |
1435 | }; | |
6a6a1e5f KM |
1436 | /* ARGSUSED */ |
1437 | fchown(p, uap, retval) | |
5e00df3b | 1438 | struct proc *p; |
9e97623a | 1439 | register struct fchown_args *uap; |
6a6a1e5f KM |
1440 | int *retval; |
1441 | { | |
fc2aed1e KM |
1442 | struct vattr vattr; |
1443 | struct vnode *vp; | |
1444 | struct file *fp; | |
1445 | int error; | |
1446 | ||
5e00df3b | 1447 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1448 | return (error); |
fc2aed1e | 1449 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1450 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1451 | VOP_LOCK(vp); |
54fb9dc2 | 1452 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1453 | error = EROFS; |
1454 | goto out; | |
1455 | } | |
3658f091 KB |
1456 | VATTR_NULL(&vattr); |
1457 | vattr.va_uid = uap->uid; | |
1458 | vattr.va_gid = uap->gid; | |
2c69fe14 | 1459 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1460 | out: |
1461 | VOP_UNLOCK(vp); | |
8429d022 | 1462 | return (error); |
d67a03eb BJ |
1463 | } |
1464 | ||
6a6a1e5f KM |
1465 | /* |
1466 | * Set the access and modification times of a file. | |
1467 | */ | |
9e97623a CT |
1468 | struct utimes_args { |
1469 | char *fname; | |
1470 | struct timeval *tptr; | |
1471 | }; | |
6a6a1e5f KM |
1472 | /* ARGSUSED */ |
1473 | utimes(p, uap, retval) | |
5e00df3b | 1474 | struct proc *p; |
9e97623a | 1475 | register struct utimes_args *uap; |
6a6a1e5f KM |
1476 | int *retval; |
1477 | { | |
fc2aed1e | 1478 | register struct vnode *vp; |
bb1b75f4 | 1479 | struct timeval tv[2]; |
fc2aed1e | 1480 | struct vattr vattr; |
8e88b0cd | 1481 | int error; |
8429d022 | 1482 | struct nameidata nd; |
bb1b75f4 | 1483 | |
f8ee9a49 KB |
1484 | VATTR_NULL(&vattr); |
1485 | if (uap->tptr == NULL) { | |
1486 | microtime(&tv[0]); | |
1487 | tv[1] = tv[0]; | |
fcba749b | 1488 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1489 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1490 | return (error); | |
dbcf7de6 | 1491 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1492 | if (error = namei(&nd)) |
8429d022 | 1493 | return (error); |
dd4c01c2 | 1494 | vp = nd.ni_vp; |
dbcf7de6 KM |
1495 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1496 | VOP_LOCK(vp); | |
54fb9dc2 | 1497 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1498 | error = EROFS; |
1499 | goto out; | |
bb1b75f4 | 1500 | } |
7e11a0c9 KM |
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; | |
2c69fe14 | 1505 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1506 | out: |
1507 | vput(vp); | |
8429d022 | 1508 | return (error); |
d67a03eb | 1509 | } |
64d3a787 | 1510 | |
9e97623a | 1511 | struct __truncate_args { |
2f2b3b3d CT |
1512 | char *fname; |
1513 | int pad; | |
1514 | off_t length; | |
1515 | }; | |
be320a2b KM |
1516 | |
1517 | /* | |
1518 | * Truncate a file given its path name. | |
1519 | */ | |
1520 | /* ARGSUSED */ | |
ae9b6dc3 | 1521 | __truncate(p, uap, retval) |
5e00df3b | 1522 | struct proc *p; |
9e97623a | 1523 | register struct __truncate_args *uap; |
6a6a1e5f KM |
1524 | int *retval; |
1525 | { | |
fc2aed1e KM |
1526 | register struct vnode *vp; |
1527 | struct vattr vattr; | |
1528 | int error; | |
8429d022 | 1529 | struct nameidata nd; |
528f664c | 1530 | |
dbcf7de6 | 1531 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
dd4c01c2 | 1532 | if (error = namei(&nd)) |
8429d022 | 1533 | return (error); |
dd4c01c2 | 1534 | vp = nd.ni_vp; |
dbcf7de6 KM |
1535 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1536 | VOP_LOCK(vp); | |
fc2aed1e KM |
1537 | if (vp->v_type == VDIR) { |
1538 | error = EISDIR; | |
1539 | goto out; | |
528f664c | 1540 | } |
d7b2a16c | 1541 | if ((error = vn_writechk(vp)) || |
2c69fe14 | 1542 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p))) |
fc2aed1e | 1543 | goto out; |
3658f091 KB |
1544 | VATTR_NULL(&vattr); |
1545 | vattr.va_size = uap->length; | |
2c69fe14 | 1546 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1547 | out: |
1548 | vput(vp); | |
8429d022 | 1549 | return (error); |
528f664c SL |
1550 | } |
1551 | ||
9e97623a | 1552 | struct __ftruncate_args { |
2f2b3b3d CT |
1553 | int fd; |
1554 | int pad; | |
1555 | off_t length; | |
1556 | }; | |
1557 | ||
4f083fd7 SL |
1558 | /* |
1559 | * Truncate a file given a file descriptor. | |
1560 | */ | |
6a6a1e5f | 1561 | /* ARGSUSED */ |
ae9b6dc3 | 1562 | __ftruncate(p, uap, retval) |
5e00df3b | 1563 | struct proc *p; |
9e97623a | 1564 | register struct __ftruncate_args *uap; |
6a6a1e5f KM |
1565 | int *retval; |
1566 | { | |
fc2aed1e KM |
1567 | struct vattr vattr; |
1568 | struct vnode *vp; | |
528f664c | 1569 | struct file *fp; |
fc2aed1e KM |
1570 | int error; |
1571 | ||
5e00df3b | 1572 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1573 | return (error); |
fc2aed1e | 1574 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1575 | return (EINVAL); |
fc2aed1e | 1576 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1577 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e KM |
1578 | VOP_LOCK(vp); |
1579 | if (vp->v_type == VDIR) { | |
1580 | error = EISDIR; | |
1581 | goto out; | |
528f664c | 1582 | } |
d7b2a16c | 1583 | if (error = vn_writechk(vp)) |
fc2aed1e | 1584 | goto out; |
3658f091 KB |
1585 | VATTR_NULL(&vattr); |
1586 | vattr.va_size = uap->length; | |
2c69fe14 | 1587 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); |
fc2aed1e KM |
1588 | out: |
1589 | VOP_UNLOCK(vp); | |
8429d022 | 1590 | return (error); |
4f083fd7 SL |
1591 | } |
1592 | ||
2f2b3b3d CT |
1593 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1594 | /* | |
1595 | * Truncate a file given its path name. | |
1596 | */ | |
9e97623a CT |
1597 | struct truncate_args { |
1598 | char *fname; | |
1599 | long length; | |
1600 | }; | |
2f2b3b3d CT |
1601 | /* ARGSUSED */ |
1602 | truncate(p, uap, retval) | |
1603 | struct proc *p; | |
9e97623a | 1604 | register struct truncate_args *uap; |
2f2b3b3d CT |
1605 | int *retval; |
1606 | { | |
9e97623a | 1607 | struct __truncate_args nuap; |
2f2b3b3d CT |
1608 | |
1609 | nuap.fname = uap->fname; | |
1610 | nuap.length = uap->length; | |
1611 | return (__truncate(p, &nuap, retval)); | |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * Truncate a file given a file descriptor. | |
1616 | */ | |
9e97623a CT |
1617 | struct ftruncate_args { |
1618 | int fd; | |
1619 | long length; | |
1620 | }; | |
2f2b3b3d CT |
1621 | /* ARGSUSED */ |
1622 | ftruncate(p, uap, retval) | |
1623 | struct proc *p; | |
9e97623a | 1624 | register struct ftruncate_args *uap; |
2f2b3b3d CT |
1625 | int *retval; |
1626 | { | |
d80c3f56 | 1627 | struct __ftruncate_args nuap; |
2f2b3b3d CT |
1628 | |
1629 | nuap.fd = uap->fd; | |
1630 | nuap.length = uap->length; | |
1631 | return (__ftruncate(p, &nuap, retval)); | |
1632 | } | |
1633 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1634 | ||
4f083fd7 SL |
1635 | /* |
1636 | * Synch an open file. | |
1637 | */ | |
9e97623a CT |
1638 | struct fsync_args { |
1639 | int fd; | |
1640 | }; | |
6a6a1e5f KM |
1641 | /* ARGSUSED */ |
1642 | fsync(p, uap, retval) | |
5e00df3b | 1643 | struct proc *p; |
9e97623a | 1644 | struct fsync_args *uap; |
6a6a1e5f KM |
1645 | int *retval; |
1646 | { | |
e79467ea | 1647 | register struct vnode *vp; |
4f083fd7 | 1648 | struct file *fp; |
fc2aed1e | 1649 | int error; |
4f083fd7 | 1650 | |
5e00df3b | 1651 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1652 | return (error); |
e79467ea KM |
1653 | vp = (struct vnode *)fp->f_data; |
1654 | VOP_LOCK(vp); | |
09d2ef1a | 1655 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1656 | VOP_UNLOCK(vp); |
8429d022 | 1657 | return (error); |
528f664c SL |
1658 | } |
1659 | ||
4f083fd7 SL |
1660 | /* |
1661 | * Rename system call. | |
4f083fd7 SL |
1662 | * |
1663 | * Source and destination must either both be directories, or both | |
1664 | * not be directories. If target is a directory, it must be empty. | |
1665 | */ | |
9e97623a CT |
1666 | struct rename_args { |
1667 | char *from; | |
1668 | char *to; | |
1669 | }; | |
6a6a1e5f KM |
1670 | /* ARGSUSED */ |
1671 | rename(p, uap, retval) | |
5e00df3b | 1672 | struct proc *p; |
9e97623a | 1673 | register struct rename_args *uap; |
6a6a1e5f KM |
1674 | int *retval; |
1675 | { | |
fc2aed1e | 1676 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1677 | struct nameidata fromnd, tond; |
fc2aed1e | 1678 | int error; |
4f083fd7 | 1679 | |
a5368812 | 1680 | CHECKPOINTREF; |
dd4c01c2 KM |
1681 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1682 | uap->from, p); | |
1683 | if (error = namei(&fromnd)) | |
8429d022 | 1684 | return (error); |
5718fad3 | 1685 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1686 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1687 | UIO_USERSPACE, uap->to, p); | |
1688 | if (error = namei(&tond)) { | |
cfef4373 | 1689 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1690 | vrele(fromnd.ni_dvp); |
66955caf KM |
1691 | vrele(fvp); |
1692 | goto out1; | |
1693 | } | |
fc2aed1e KM |
1694 | tdvp = tond.ni_dvp; |
1695 | tvp = tond.ni_vp; | |
1696 | if (tvp != NULL) { | |
1697 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1698 | error = ENOTDIR; |
fc2aed1e KM |
1699 | goto out; |
1700 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1701 | error = EISDIR; |
fc2aed1e | 1702 | goto out; |
a5390dce | 1703 | } |
64d3a787 | 1704 | } |
fe562f32 | 1705 | if (fvp == tdvp) |
fc2aed1e | 1706 | error = EINVAL; |
fe562f32 | 1707 | /* |
5718fad3 KM |
1708 | * If source is the same as the destination (that is the |
1709 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1710 | * then there is nothing to do. |
1711 | */ | |
5718fad3 | 1712 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1713 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1714 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1715 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1716 | error = -1; |
fc2aed1e | 1717 | out: |
66955caf | 1718 | if (!error) { |
e62d4143 KM |
1719 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1720 | if (fromnd.ni_dvp != tdvp) | |
1721 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1722 | if (tvp) | |
1723 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1724 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1725 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1726 | } else { |
cfef4373 | 1727 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1728 | if (tdvp == tvp) |
1729 | vrele(tdvp); | |
1730 | else | |
1731 | vput(tdvp); | |
66955caf KM |
1732 | if (tvp) |
1733 | vput(tvp); | |
cfef4373 | 1734 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1735 | vrele(fromnd.ni_dvp); |
66955caf | 1736 | vrele(fvp); |
64d3a787 | 1737 | } |
c03959f9 | 1738 | p->p_spare[1]--; |
5718fad3 | 1739 | vrele(tond.ni_startdir); |
dd4c01c2 | 1740 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1741 | out1: |
c03959f9 | 1742 | p->p_spare[1]--; |
5718fad3 | 1743 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1744 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1745 | CHECKREFS("rename"); |
fe562f32 | 1746 | if (error == -1) |
8429d022 MK |
1747 | return (0); |
1748 | return (error); | |
64d3a787 | 1749 | } |
88a7a62a | 1750 | |
88a7a62a | 1751 | /* |
d4ed1dcd | 1752 | * Mkdir system call. |
88a7a62a | 1753 | */ |
9e97623a CT |
1754 | struct mkdir_args { |
1755 | char *name; | |
1756 | int dmode; | |
1757 | }; | |
6a6a1e5f KM |
1758 | /* ARGSUSED */ |
1759 | mkdir(p, uap, retval) | |
5e00df3b | 1760 | struct proc *p; |
9e97623a | 1761 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1762 | int *retval; |
1763 | { | |
fc2aed1e KM |
1764 | register struct vnode *vp; |
1765 | struct vattr vattr; | |
1766 | int error; | |
8429d022 | 1767 | struct nameidata nd; |
88a7a62a | 1768 | |
a5368812 | 1769 | CHECKPOINTREF; |
dd4c01c2 KM |
1770 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
1771 | if (error = namei(&nd)) | |
8429d022 | 1772 | return (error); |
dd4c01c2 | 1773 | vp = nd.ni_vp; |
fc2aed1e | 1774 | if (vp != NULL) { |
dd4c01c2 KM |
1775 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1776 | if (nd.ni_dvp == vp) | |
1777 | vrele(nd.ni_dvp); | |
6c44e83b | 1778 | else |
dd4c01c2 | 1779 | vput(nd.ni_dvp); |
66955caf | 1780 | vrele(vp); |
a5368812 | 1781 | CHECKREFS("mkdir1"); |
8429d022 | 1782 | return (EEXIST); |
88a7a62a | 1783 | } |
3ee1461b | 1784 | VATTR_NULL(&vattr); |
fc2aed1e | 1785 | vattr.va_type = VDIR; |
5e00df3b | 1786 | vattr.va_mode = (uap->dmode & 0777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1787 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1788 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1789 | if (!error) |
dd4c01c2 | 1790 | vput(nd.ni_vp); |
a5368812 | 1791 | CHECKREFS("mkdir2"); |
8429d022 | 1792 | return (error); |
88a7a62a SL |
1793 | } |
1794 | ||
1795 | /* | |
1796 | * Rmdir system call. | |
1797 | */ | |
9e97623a CT |
1798 | struct rmdir_args { |
1799 | char *name; | |
1800 | }; | |
6a6a1e5f KM |
1801 | /* ARGSUSED */ |
1802 | rmdir(p, uap, retval) | |
5e00df3b | 1803 | struct proc *p; |
9e97623a | 1804 | struct rmdir_args *uap; |
6a6a1e5f KM |
1805 | int *retval; |
1806 | { | |
fc2aed1e KM |
1807 | register struct vnode *vp; |
1808 | int error; | |
8429d022 | 1809 | struct nameidata nd; |
88a7a62a | 1810 | |
a5368812 | 1811 | CHECKPOINTREF; |
dd4c01c2 KM |
1812 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1813 | if (error = namei(&nd)) | |
8429d022 | 1814 | return (error); |
dd4c01c2 | 1815 | vp = nd.ni_vp; |
fc2aed1e KM |
1816 | if (vp->v_type != VDIR) { |
1817 | error = ENOTDIR; | |
88a7a62a SL |
1818 | goto out; |
1819 | } | |
1820 | /* | |
fc2aed1e | 1821 | * No rmdir "." please. |
88a7a62a | 1822 | */ |
dd4c01c2 | 1823 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1824 | error = EINVAL; |
88a7a62a SL |
1825 | goto out; |
1826 | } | |
1827 | /* | |
d4ed1dcd | 1828 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1829 | */ |
fc2aed1e KM |
1830 | if (vp->v_flag & VROOT) |
1831 | error = EBUSY; | |
88a7a62a | 1832 | out: |
66955caf | 1833 | if (!error) { |
dd4c01c2 | 1834 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1835 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1836 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1837 | } else { |
dd4c01c2 KM |
1838 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1839 | if (nd.ni_dvp == vp) | |
1840 | vrele(nd.ni_dvp); | |
6c44e83b | 1841 | else |
dd4c01c2 | 1842 | vput(nd.ni_dvp); |
66955caf KM |
1843 | vput(vp); |
1844 | } | |
a5368812 | 1845 | CHECKREFS("rmdir"); |
8429d022 | 1846 | return (error); |
88a7a62a SL |
1847 | } |
1848 | ||
3d92fa10 KM |
1849 | #ifdef COMPAT_43 |
1850 | /* | |
1851 | * Read a block of directory entries in a file system independent format. | |
1852 | */ | |
9e97623a CT |
1853 | struct ogetdirentries_args { |
1854 | int fd; | |
1855 | char *buf; | |
1856 | unsigned count; | |
1857 | long *basep; | |
1858 | }; | |
3d92fa10 KM |
1859 | ogetdirentries(p, uap, retval) |
1860 | struct proc *p; | |
9e97623a | 1861 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1862 | int *retval; |
1863 | { | |
3d92fa10 KM |
1864 | register struct vnode *vp; |
1865 | struct file *fp; | |
1866 | struct uio auio, kuio; | |
1867 | struct iovec aiov, kiov; | |
1868 | struct dirent *dp, *edp; | |
1869 | caddr_t dirbuf; | |
1870 | int error, readcnt; | |
d80c3f56 | 1871 | long loff; |
3d92fa10 KM |
1872 | |
1873 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1874 | return (error); | |
1875 | if ((fp->f_flag & FREAD) == 0) | |
1876 | return (EBADF); | |
1877 | vp = (struct vnode *)fp->f_data; | |
1878 | if (vp->v_type != VDIR) | |
1879 | return (EINVAL); | |
1880 | aiov.iov_base = uap->buf; | |
1881 | aiov.iov_len = uap->count; | |
1882 | auio.uio_iov = &aiov; | |
1883 | auio.uio_iovcnt = 1; | |
1884 | auio.uio_rw = UIO_READ; | |
1885 | auio.uio_segflg = UIO_USERSPACE; | |
1886 | auio.uio_procp = p; | |
1887 | auio.uio_resid = uap->count; | |
1888 | VOP_LOCK(vp); | |
d80c3f56 | 1889 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1890 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1891 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1892 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1893 | fp->f_offset = auio.uio_offset; |
1894 | } else | |
3d92fa10 KM |
1895 | # endif |
1896 | { | |
1897 | kuio = auio; | |
1898 | kuio.uio_iov = &kiov; | |
1899 | kuio.uio_segflg = UIO_SYSSPACE; | |
1900 | kiov.iov_len = uap->count; | |
1901 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1902 | kiov.iov_base = dirbuf; | |
1903 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1904 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1905 | if (error == 0) { |
1906 | readcnt = uap->count - kuio.uio_resid; | |
1907 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1908 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1909 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1910 | /* |
30445fe6 KM |
1911 | * The expected low byte of |
1912 | * dp->d_namlen is our dp->d_type. | |
1913 | * The high MBZ byte of dp->d_namlen | |
1914 | * is our dp->d_namlen. | |
d80c3f56 | 1915 | */ |
30445fe6 KM |
1916 | dp->d_type = dp->d_namlen; |
1917 | dp->d_namlen = 0; | |
1918 | # else | |
1919 | /* | |
1920 | * The dp->d_type is the high byte | |
1921 | * of the expected dp->d_namlen, | |
1922 | * so must be zero'ed. | |
1923 | */ | |
1924 | dp->d_type = 0; | |
3d92fa10 KM |
1925 | # endif |
1926 | if (dp->d_reclen > 0) { | |
1927 | dp = (struct dirent *) | |
1928 | ((char *)dp + dp->d_reclen); | |
1929 | } else { | |
1930 | error = EIO; | |
1931 | break; | |
1932 | } | |
1933 | } | |
1934 | if (dp >= edp) | |
1935 | error = uiomove(dirbuf, readcnt, &auio); | |
1936 | } | |
1937 | FREE(dirbuf, M_TEMP); | |
1938 | } | |
3d92fa10 KM |
1939 | VOP_UNLOCK(vp); |
1940 | if (error) | |
1941 | return (error); | |
d80c3f56 | 1942 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1943 | *retval = uap->count - auio.uio_resid; |
1944 | return (error); | |
1945 | } | |
1946 | #endif | |
1947 | ||
fc2aed1e | 1948 | /* |
d4ed1dcd | 1949 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1950 | */ |
9e97623a CT |
1951 | struct getdirentries_args { |
1952 | int fd; | |
1953 | char *buf; | |
1954 | unsigned count; | |
1955 | long *basep; | |
1956 | }; | |
6a6a1e5f | 1957 | getdirentries(p, uap, retval) |
5e00df3b | 1958 | struct proc *p; |
9e97623a | 1959 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1960 | int *retval; |
1961 | { | |
e79467ea | 1962 | register struct vnode *vp; |
8462a185 | 1963 | struct file *fp; |
fc2aed1e KM |
1964 | struct uio auio; |
1965 | struct iovec aiov; | |
d80c3f56 | 1966 | long loff; |
09d2ef1a | 1967 | int error; |
fc2aed1e | 1968 | |
5e00df3b | 1969 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1970 | return (error); |
fc2aed1e | 1971 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1972 | return (EBADF); |
e79467ea | 1973 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1974 | unionread: |
e79467ea | 1975 | if (vp->v_type != VDIR) |
8429d022 | 1976 | return (EINVAL); |
fc2aed1e KM |
1977 | aiov.iov_base = uap->buf; |
1978 | aiov.iov_len = uap->count; | |
1979 | auio.uio_iov = &aiov; | |
1980 | auio.uio_iovcnt = 1; | |
1981 | auio.uio_rw = UIO_READ; | |
1982 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1983 | auio.uio_procp = p; |
fc2aed1e | 1984 | auio.uio_resid = uap->count; |
e79467ea | 1985 | VOP_LOCK(vp); |
d80c3f56 | 1986 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1987 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1988 | fp->f_offset = auio.uio_offset; |
1989 | VOP_UNLOCK(vp); | |
1990 | if (error) | |
8429d022 | 1991 | return (error); |
95a9cadb JSP |
1992 | if ((uap->count == auio.uio_resid) && |
1993 | (vp->v_flag & VROOT) && | |
1994 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1995 | struct vnode *tvp = vp; | |
1996 | vp = vp->v_mount->mnt_vnodecovered; | |
1997 | VREF(vp); | |
1998 | fp->f_data = (caddr_t) vp; | |
1999 | fp->f_offset = 0; | |
2000 | vrele(tvp); | |
2001 | goto unionread; | |
2002 | } | |
d80c3f56 | 2003 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 2004 | *retval = uap->count - auio.uio_resid; |
8429d022 | 2005 | return (error); |
88a7a62a SL |
2006 | } |
2007 | ||
2008 | /* | |
d4ed1dcd | 2009 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 2010 | */ |
9e97623a CT |
2011 | struct umask_args { |
2012 | int mask; | |
2013 | }; | |
2014 | mode_t /* XXX */ | |
6a6a1e5f | 2015 | umask(p, uap, retval) |
5e00df3b | 2016 | struct proc *p; |
9e97623a | 2017 | struct umask_args *uap; |
6a6a1e5f KM |
2018 | int *retval; |
2019 | { | |
5e00df3b | 2020 | register struct filedesc *fdp = p->p_fd; |
88a7a62a | 2021 | |
5e00df3b KM |
2022 | *retval = fdp->fd_cmask; |
2023 | fdp->fd_cmask = uap->mask & 07777; | |
8429d022 | 2024 | return (0); |
fc2aed1e KM |
2025 | } |
2026 | ||
b0a98f13 MT |
2027 | /* |
2028 | * Void all references to file by ripping underlying filesystem | |
2029 | * away from vnode. | |
2030 | */ | |
9e97623a CT |
2031 | struct revoke_args { |
2032 | char *fname; | |
2033 | }; | |
6a6a1e5f KM |
2034 | /* ARGSUSED */ |
2035 | revoke(p, uap, retval) | |
5e00df3b | 2036 | struct proc *p; |
9e97623a | 2037 | register struct revoke_args *uap; |
6a6a1e5f KM |
2038 | int *retval; |
2039 | { | |
b0a98f13 MT |
2040 | register struct vnode *vp; |
2041 | struct vattr vattr; | |
2042 | int error; | |
8429d022 | 2043 | struct nameidata nd; |
b0a98f13 | 2044 | |
dd4c01c2 KM |
2045 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
2046 | if (error = namei(&nd)) | |
8429d022 | 2047 | return (error); |
dd4c01c2 | 2048 | vp = nd.ni_vp; |
b0a98f13 MT |
2049 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2050 | error = EINVAL; | |
2051 | goto out; | |
2052 | } | |
2c69fe14 | 2053 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2054 | goto out; |
8429d022 MK |
2055 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2056 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2057 | goto out; |
8b81d198 | 2058 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2059 | vgoneall(vp); |
b0a98f13 MT |
2060 | out: |
2061 | vrele(vp); | |
8429d022 | 2062 | return (error); |
b0a98f13 MT |
2063 | } |
2064 | ||
d4ed1dcd KM |
2065 | /* |
2066 | * Convert a user file descriptor to a kernel file entry. | |
2067 | */ | |
5e00df3b KM |
2068 | getvnode(fdp, fdes, fpp) |
2069 | struct filedesc *fdp; | |
fc2aed1e KM |
2070 | struct file **fpp; |
2071 | int fdes; | |
2072 | { | |
2073 | struct file *fp; | |
2074 | ||
8429d022 | 2075 | if ((unsigned)fdes >= fdp->fd_nfiles || |
78eeb014 | 2076 | (fp = fdp->fd_ofiles[fdes]) == NULL) |
fc2aed1e KM |
2077 | return (EBADF); |
2078 | if (fp->f_type != DTYPE_VNODE) | |
2079 | return (EINVAL); | |
2080 | *fpp = fp; | |
2081 | return (0); | |
88a7a62a | 2082 | } |