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 | * |
70b7fe1d | 7 | * @(#)vfs_syscalls.c 8.6 (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; | |
ac85da8a KM |
139 | mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | |
140 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
141 | mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | | |
142 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); | |
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 | */ | |
fc2aed1e | 160 | cache_purge(vp); |
fc2aed1e | 161 | if (!error) { |
0f66cdec | 162 | TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); |
d48157d5 | 163 | VOP_UNLOCK(vp); |
fc2aed1e | 164 | vfs_unlock(mp); |
2c69fe14 | 165 | error = VFS_START(mp, 0, p); |
fc2aed1e | 166 | } else { |
0f66cdec KM |
167 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; |
168 | vfs_unlock(mp); | |
fc2aed1e | 169 | free((caddr_t)mp, M_MOUNT); |
d48157d5 | 170 | vput(vp); |
fc2aed1e | 171 | } |
8429d022 | 172 | return (error); |
3e78e260 BJ |
173 | } |
174 | ||
4f083fd7 | 175 | /* |
7121fdf0 | 176 | * Unmount a file system. |
fc2aed1e KM |
177 | * |
178 | * Note: unmount takes a path to the vnode mounted on as argument, | |
179 | * not special file (as before). | |
4f083fd7 | 180 | */ |
9e97623a | 181 | struct unmount_args { |
7121fdf0 | 182 | char *path; |
9e97623a CT |
183 | int flags; |
184 | }; | |
6a6a1e5f KM |
185 | /* ARGSUSED */ |
186 | unmount(p, uap, retval) | |
5e00df3b | 187 | struct proc *p; |
9e97623a | 188 | register struct unmount_args *uap; |
6a6a1e5f KM |
189 | int *retval; |
190 | { | |
fc2aed1e | 191 | register struct vnode *vp; |
9151110e | 192 | struct mount *mp; |
fc2aed1e | 193 | int error; |
8429d022 | 194 | struct nameidata nd; |
fc2aed1e KM |
195 | |
196 | /* | |
197 | * Must be super user | |
198 | */ | |
8429d022 MK |
199 | if (error = suser(p->p_ucred, &p->p_acflag)) |
200 | return (error); | |
fc2aed1e | 201 | |
7121fdf0 | 202 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 203 | if (error = namei(&nd)) |
8429d022 | 204 | return (error); |
dd4c01c2 | 205 | vp = nd.ni_vp; |
fc2aed1e KM |
206 | /* |
207 | * Must be the root of the filesystem | |
208 | */ | |
209 | if ((vp->v_flag & VROOT) == 0) { | |
210 | vput(vp); | |
8429d022 | 211 | return (EINVAL); |
fc2aed1e KM |
212 | } |
213 | mp = vp->v_mount; | |
214 | vput(vp); | |
2c69fe14 | 215 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
216 | } |
217 | ||
218 | /* | |
7121fdf0 | 219 | * Do the actual file system unmount. |
9151110e | 220 | */ |
2c69fe14 | 221 | dounmount(mp, flags, p) |
9151110e KM |
222 | register struct mount *mp; |
223 | int flags; | |
2c69fe14 | 224 | struct proc *p; |
9151110e KM |
225 | { |
226 | struct vnode *coveredvp; | |
227 | int error; | |
228 | ||
54fb9dc2 | 229 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
230 | if (vfs_busy(mp)) |
231 | return (EBUSY); | |
54fb9dc2 | 232 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 233 | if (error = vfs_lock(mp)) |
9151110e | 234 | return (error); |
fc2aed1e | 235 | |
9db58063 | 236 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 237 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
238 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
239 | (flags & MNT_FORCE)) | |
2c69fe14 | 240 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 241 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 242 | vfs_unbusy(mp); |
fc2aed1e KM |
243 | if (error) { |
244 | vfs_unlock(mp); | |
245 | } else { | |
246 | vrele(coveredvp); | |
0f66cdec KM |
247 | TAILQ_REMOVE(&mountlist, mp, mnt_list); |
248 | mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; | |
249 | vfs_unlock(mp); | |
250 | if (mp->mnt_vnodelist.lh_first != NULL) | |
ea2761aa | 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 | { |
0f66cdec | 274 | register struct mount *mp, *nmp; |
fc2aed1e | 275 | |
0f66cdec KM |
276 | for (mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
277 | nmp = mp->mnt_list.tqe_next; | |
62e35d50 KM |
278 | /* |
279 | * The lock check below is to avoid races with mount | |
280 | * and unmount. | |
281 | */ | |
54fb9dc2 | 282 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 283 | !vfs_busy(mp)) { |
09d2ef1a | 284 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
0f66cdec KM |
285 | vfs_unbusy(mp); |
286 | } | |
287 | } | |
0649728d KM |
288 | #ifdef DIAGNOSTIC |
289 | if (syncprt) | |
290 | vfs_bufstats(); | |
291 | #endif /* DIAGNOSTIC */ | |
78eeb014 | 292 | return (0); |
fc2aed1e KM |
293 | } |
294 | ||
c001b1c3 | 295 | /* |
7121fdf0 | 296 | * Change filesystem quotas. |
c001b1c3 | 297 | */ |
9e97623a CT |
298 | struct quotactl_args { |
299 | char *path; | |
300 | int cmd; | |
301 | int uid; | |
302 | caddr_t arg; | |
303 | }; | |
6a6a1e5f KM |
304 | /* ARGSUSED */ |
305 | quotactl(p, uap, retval) | |
5e00df3b | 306 | struct proc *p; |
9e97623a | 307 | register struct quotactl_args *uap; |
6a6a1e5f KM |
308 | int *retval; |
309 | { | |
c001b1c3 | 310 | register struct mount *mp; |
c001b1c3 | 311 | int error; |
8429d022 | 312 | struct nameidata nd; |
c001b1c3 | 313 | |
dd4c01c2 KM |
314 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
315 | if (error = namei(&nd)) | |
8429d022 | 316 | return (error); |
dd4c01c2 KM |
317 | mp = nd.ni_vp->v_mount; |
318 | vrele(nd.ni_vp); | |
2c69fe14 | 319 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
320 | } |
321 | ||
fc2aed1e | 322 | /* |
d4ed1dcd | 323 | * Get filesystem statistics. |
fc2aed1e | 324 | */ |
9e97623a CT |
325 | struct statfs_args { |
326 | char *path; | |
327 | struct statfs *buf; | |
328 | }; | |
6a6a1e5f KM |
329 | /* ARGSUSED */ |
330 | statfs(p, uap, retval) | |
5e00df3b | 331 | struct proc *p; |
9e97623a | 332 | register struct statfs_args *uap; |
6a6a1e5f KM |
333 | int *retval; |
334 | { | |
3f705640 | 335 | register struct mount *mp; |
62e35d50 | 336 | register struct statfs *sp; |
fc2aed1e | 337 | int error; |
8429d022 | 338 | struct nameidata nd; |
3e78e260 | 339 | |
dd4c01c2 KM |
340 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
341 | if (error = namei(&nd)) | |
8429d022 | 342 | return (error); |
dd4c01c2 | 343 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 344 | sp = &mp->mnt_stat; |
dd4c01c2 | 345 | vrele(nd.ni_vp); |
2c69fe14 | 346 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 347 | return (error); |
54fb9dc2 | 348 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 349 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
350 | } |
351 | ||
6a6a1e5f | 352 | /* |
d4ed1dcd | 353 | * Get filesystem statistics. |
6a6a1e5f | 354 | */ |
9e97623a CT |
355 | struct fstatfs_args { |
356 | int fd; | |
357 | struct statfs *buf; | |
358 | }; | |
6a6a1e5f KM |
359 | /* ARGSUSED */ |
360 | fstatfs(p, uap, retval) | |
5e00df3b | 361 | struct proc *p; |
9e97623a | 362 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
363 | int *retval; |
364 | { | |
fc2aed1e | 365 | struct file *fp; |
3f705640 | 366 | struct mount *mp; |
62e35d50 | 367 | register struct statfs *sp; |
fc2aed1e KM |
368 | int error; |
369 | ||
5e00df3b | 370 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 371 | return (error); |
3f705640 | 372 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 373 | sp = &mp->mnt_stat; |
2c69fe14 | 374 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 375 | return (error); |
54fb9dc2 | 376 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 377 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
378 | } |
379 | ||
bfcdbfbf | 380 | /* |
d4ed1dcd | 381 | * Get statistics on all filesystems. |
bfcdbfbf | 382 | */ |
9e97623a CT |
383 | struct getfsstat_args { |
384 | struct statfs *buf; | |
385 | long bufsize; | |
386 | int flags; | |
387 | }; | |
6a6a1e5f | 388 | getfsstat(p, uap, retval) |
5e00df3b | 389 | struct proc *p; |
9e97623a | 390 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
391 | int *retval; |
392 | { | |
0f66cdec | 393 | register struct mount *mp, *nmp; |
62e35d50 | 394 | register struct statfs *sp; |
f62fad9a | 395 | caddr_t sfsp; |
bfcdbfbf KM |
396 | long count, maxcount, error; |
397 | ||
398 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 399 | sfsp = (caddr_t)uap->buf; |
0f66cdec KM |
400 | for (count = 0, mp = mountlist.tqh_first; mp != NULL; mp = nmp) { |
401 | nmp = mp->mnt_list.tqe_next; | |
54fb9dc2 KM |
402 | if (sfsp && count < maxcount && |
403 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
404 | sp = &mp->mnt_stat; | |
62e35d50 KM |
405 | /* |
406 | * If MNT_NOWAIT is specified, do not refresh the | |
407 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
408 | */ | |
409 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
410 | (uap->flags & MNT_WAIT)) && | |
0f66cdec | 411 | (error = VFS_STATFS(mp, sp, p))) |
fd8516be | 412 | continue; |
54fb9dc2 | 413 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 414 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 415 | return (error); |
62e35d50 | 416 | sfsp += sizeof(*sp); |
bfcdbfbf | 417 | } |
f62fad9a | 418 | count++; |
0f66cdec | 419 | } |
bfcdbfbf | 420 | if (sfsp && count > maxcount) |
6a6a1e5f | 421 | *retval = maxcount; |
bfcdbfbf | 422 | else |
6a6a1e5f | 423 | *retval = count; |
8429d022 | 424 | return (0); |
bfcdbfbf KM |
425 | } |
426 | ||
6995a2cb KM |
427 | /* |
428 | * Change current working directory to a given file descriptor. | |
429 | */ | |
9e97623a CT |
430 | struct fchdir_args { |
431 | int fd; | |
432 | }; | |
6a6a1e5f KM |
433 | /* ARGSUSED */ |
434 | fchdir(p, uap, retval) | |
5e00df3b | 435 | struct proc *p; |
9e97623a | 436 | struct fchdir_args *uap; |
6a6a1e5f KM |
437 | int *retval; |
438 | { | |
5e00df3b | 439 | register struct filedesc *fdp = p->p_fd; |
6995a2cb KM |
440 | register struct vnode *vp; |
441 | struct file *fp; | |
442 | int error; | |
443 | ||
5e00df3b | 444 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 445 | return (error); |
6995a2cb KM |
446 | vp = (struct vnode *)fp->f_data; |
447 | VOP_LOCK(vp); | |
448 | if (vp->v_type != VDIR) | |
449 | error = ENOTDIR; | |
450 | else | |
2c69fe14 | 451 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
6995a2cb | 452 | VOP_UNLOCK(vp); |
ab214c34 | 453 | if (error) |
8429d022 | 454 | return (error); |
ab214c34 | 455 | VREF(vp); |
5e00df3b KM |
456 | vrele(fdp->fd_cdir); |
457 | fdp->fd_cdir = vp; | |
8429d022 | 458 | return (0); |
6995a2cb KM |
459 | } |
460 | ||
4f083fd7 | 461 | /* |
fc2aed1e | 462 | * Change current working directory (``.''). |
4f083fd7 | 463 | */ |
9e97623a | 464 | struct chdir_args { |
7121fdf0 | 465 | char *path; |
9e97623a | 466 | }; |
6a6a1e5f KM |
467 | /* ARGSUSED */ |
468 | chdir(p, uap, retval) | |
5e00df3b | 469 | struct proc *p; |
9e97623a | 470 | struct chdir_args *uap; |
6a6a1e5f KM |
471 | int *retval; |
472 | { | |
5e00df3b | 473 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 474 | int error; |
8429d022 | 475 | struct nameidata nd; |
3e78e260 | 476 | |
7121fdf0 KB |
477 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
478 | if (error = change_dir(&nd, p)) | |
8429d022 | 479 | return (error); |
5e00df3b | 480 | vrele(fdp->fd_cdir); |
dd4c01c2 | 481 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 482 | return (0); |
fc2aed1e KM |
483 | } |
484 | ||
485 | /* | |
486 | * Change notion of root (``/'') directory. | |
487 | */ | |
9e97623a | 488 | struct chroot_args { |
7121fdf0 | 489 | char *path; |
9e97623a | 490 | }; |
6a6a1e5f KM |
491 | /* ARGSUSED */ |
492 | chroot(p, uap, retval) | |
5e00df3b | 493 | struct proc *p; |
9e97623a | 494 | struct chroot_args *uap; |
6a6a1e5f KM |
495 | int *retval; |
496 | { | |
5e00df3b | 497 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 498 | int error; |
8429d022 | 499 | struct nameidata nd; |
fc2aed1e | 500 | |
8429d022 MK |
501 | if (error = suser(p->p_ucred, &p->p_acflag)) |
502 | return (error); | |
7121fdf0 KB |
503 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
504 | if (error = change_dir(&nd, p)) | |
8429d022 | 505 | return (error); |
5e00df3b KM |
506 | if (fdp->fd_rdir != NULL) |
507 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 508 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 509 | return (0); |
fc2aed1e KM |
510 | } |
511 | ||
512 | /* | |
513 | * Common routine for chroot and chdir. | |
514 | */ | |
7121fdf0 KB |
515 | static int |
516 | change_dir(ndp, p) | |
dd4c01c2 | 517 | register struct nameidata *ndp; |
8429d022 | 518 | struct proc *p; |
fc2aed1e KM |
519 | { |
520 | struct vnode *vp; | |
521 | int error; | |
522 | ||
dd4c01c2 | 523 | if (error = namei(ndp)) |
fc2aed1e KM |
524 | return (error); |
525 | vp = ndp->ni_vp; | |
526 | if (vp->v_type != VDIR) | |
527 | error = ENOTDIR; | |
528 | else | |
2c69fe14 | 529 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
530 | VOP_UNLOCK(vp); |
531 | if (error) | |
532 | vrele(vp); | |
533 | return (error); | |
3e78e260 BJ |
534 | } |
535 | ||
536 | /* | |
6a6a1e5f KM |
537 | * Check permissions, allocate an open file structure, |
538 | * and call the device open routine if any. | |
3e78e260 | 539 | */ |
9e97623a | 540 | struct open_args { |
7121fdf0 KB |
541 | char *path; |
542 | int flags; | |
9e97623a | 543 | int mode; |
9e97623a | 544 | }; |
6a6a1e5f | 545 | open(p, uap, retval) |
5e00df3b | 546 | struct proc *p; |
9e97623a | 547 | register struct open_args *uap; |
6a6a1e5f | 548 | int *retval; |
3e78e260 | 549 | { |
5e00df3b | 550 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 551 | register struct file *fp; |
6aaf085a | 552 | register struct vnode *vp; |
7121fdf0 | 553 | int flags, cmode; |
fc2aed1e | 554 | struct file *nfp; |
ff8d1617 KM |
555 | int type, indx, error; |
556 | struct flock lf; | |
8429d022 | 557 | struct nameidata nd; |
fc2aed1e KM |
558 | extern struct fileops vnops; |
559 | ||
5e00df3b | 560 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 561 | return (error); |
fc2aed1e | 562 | fp = nfp; |
7121fdf0 KB |
563 | flags = FFLAGS(uap->flags); |
564 | cmode = ((uap->mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; | |
565 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); | |
03951846 | 566 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
7121fdf0 | 567 | if (error = vn_open(&nd, flags, cmode)) { |
336f999d | 568 | ffree(fp); |
f0e12026 KM |
569 | if ((error == ENODEV || error == ENXIO) && |
570 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
7121fdf0 KB |
571 | (error = |
572 | dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) { | |
6a6a1e5f | 573 | *retval = indx; |
8429d022 | 574 | return (0); |
6a6a1e5f | 575 | } |
b10521d6 KM |
576 | if (error == ERESTART) |
577 | error = EINTR; | |
78eeb014 | 578 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 579 | return (error); |
528f664c | 580 | } |
da5acac3 | 581 | p->p_dupfd = 0; |
dd4c01c2 | 582 | vp = nd.ni_vp; |
7121fdf0 | 583 | fp->f_flag = flags & FMASK; |
8932276d KM |
584 | fp->f_type = DTYPE_VNODE; |
585 | fp->f_ops = &vnops; | |
586 | fp->f_data = (caddr_t)vp; | |
7121fdf0 | 587 | if (flags & (O_EXLOCK | O_SHLOCK)) { |
ff8d1617 KM |
588 | lf.l_whence = SEEK_SET; |
589 | lf.l_start = 0; | |
590 | lf.l_len = 0; | |
7121fdf0 | 591 | if (flags & O_EXLOCK) |
ff8d1617 KM |
592 | lf.l_type = F_WRLCK; |
593 | else | |
594 | lf.l_type = F_RDLCK; | |
595 | type = F_FLOCK; | |
7121fdf0 | 596 | if ((flags & FNONBLOCK) == 0) |
ff8d1617 | 597 | type |= F_WAIT; |
70b7fe1d | 598 | VOP_UNLOCK(vp); |
6aaf085a | 599 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
6aaf085a | 600 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); |
336f999d | 601 | ffree(fp); |
ff8d1617 KM |
602 | fdp->fd_ofiles[indx] = NULL; |
603 | return (error); | |
604 | } | |
70b7fe1d | 605 | VOP_LOCK(vp); |
b40ecf6f | 606 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 607 | } |
6aaf085a | 608 | VOP_UNLOCK(vp); |
6a6a1e5f | 609 | *retval = indx; |
8429d022 | 610 | return (0); |
3e78e260 BJ |
611 | } |
612 | ||
4fde03dc | 613 | #ifdef COMPAT_43 |
3e78e260 | 614 | /* |
7121fdf0 | 615 | * Create a file. |
3e78e260 | 616 | */ |
9e97623a | 617 | struct ocreat_args { |
7121fdf0 KB |
618 | char *path; |
619 | int mode; | |
9e97623a | 620 | }; |
4fde03dc | 621 | ocreat(p, uap, retval) |
6a6a1e5f | 622 | struct proc *p; |
9e97623a | 623 | register struct ocreat_args *uap; |
6a6a1e5f | 624 | int *retval; |
3e78e260 | 625 | { |
9e97623a | 626 | struct open_args openuap; |
6a6a1e5f | 627 | |
7121fdf0 KB |
628 | openuap.path = uap->path; |
629 | openuap.mode = uap->mode; | |
630 | openuap.flags = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 631 | return (open(p, &openuap, retval)); |
6a6a1e5f | 632 | } |
4fde03dc | 633 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
634 | |
635 | /* | |
7121fdf0 | 636 | * Create a special file. |
6a6a1e5f | 637 | */ |
9e97623a | 638 | struct mknod_args { |
7121fdf0 KB |
639 | char *path; |
640 | int mode; | |
9e97623a CT |
641 | int dev; |
642 | }; | |
6a6a1e5f KM |
643 | /* ARGSUSED */ |
644 | mknod(p, uap, retval) | |
5e00df3b | 645 | struct proc *p; |
9e97623a | 646 | register struct mknod_args *uap; |
6a6a1e5f KM |
647 | int *retval; |
648 | { | |
fc2aed1e KM |
649 | register struct vnode *vp; |
650 | struct vattr vattr; | |
651 | int error; | |
8429d022 | 652 | struct nameidata nd; |
3e78e260 | 653 | |
a5368812 | 654 | CHECKPOINTREF; |
8429d022 MK |
655 | if (error = suser(p->p_ucred, &p->p_acflag)) |
656 | return (error); | |
7121fdf0 | 657 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 658 | if (error = namei(&nd)) |
8429d022 | 659 | return (error); |
dd4c01c2 | 660 | vp = nd.ni_vp; |
cf5ef508 | 661 | if (vp != NULL) |
fc2aed1e | 662 | error = EEXIST; |
cf5ef508 KB |
663 | else { |
664 | VATTR_NULL(&vattr); | |
665 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; | |
666 | vattr.va_rdev = uap->dev; | |
667 | ||
668 | switch (uap->mode & S_IFMT) { | |
669 | case S_IFMT: /* used by badsect to flag bad sectors */ | |
670 | vattr.va_type = VBAD; | |
671 | break; | |
672 | case S_IFCHR: | |
673 | vattr.va_type = VCHR; | |
674 | break; | |
675 | case S_IFBLK: | |
676 | vattr.va_type = VBLK; | |
677 | break; | |
678 | default: | |
679 | error = EINVAL; | |
680 | break; | |
681 | } | |
3e78e260 | 682 | } |
66955caf | 683 | if (!error) { |
dd4c01c2 KM |
684 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
685 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 686 | } else { |
dd4c01c2 KM |
687 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
688 | if (nd.ni_dvp == vp) | |
689 | vrele(nd.ni_dvp); | |
6c44e83b | 690 | else |
dd4c01c2 | 691 | vput(nd.ni_dvp); |
66955caf KM |
692 | if (vp) |
693 | vrele(vp); | |
694 | } | |
a5368812 | 695 | CHECKREFS("mknod"); |
8429d022 | 696 | return (error); |
3e78e260 BJ |
697 | } |
698 | ||
4751dd21 | 699 | /* |
7121fdf0 | 700 | * Create named pipe. |
4751dd21 | 701 | */ |
9e97623a | 702 | struct mkfifo_args { |
7121fdf0 KB |
703 | char *path; |
704 | int mode; | |
9e97623a | 705 | }; |
6a6a1e5f KM |
706 | /* ARGSUSED */ |
707 | mkfifo(p, uap, retval) | |
5e00df3b | 708 | struct proc *p; |
9e97623a | 709 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
710 | int *retval; |
711 | { | |
4751dd21 KM |
712 | struct vattr vattr; |
713 | int error; | |
8429d022 | 714 | struct nameidata nd; |
4751dd21 KM |
715 | |
716 | #ifndef FIFO | |
8429d022 | 717 | return (EOPNOTSUPP); |
4751dd21 | 718 | #else |
7121fdf0 | 719 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 720 | if (error = namei(&nd)) |
8429d022 | 721 | return (error); |
dd4c01c2 KM |
722 | if (nd.ni_vp != NULL) { |
723 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
724 | if (nd.ni_dvp == nd.ni_vp) | |
725 | vrele(nd.ni_dvp); | |
6c44e83b | 726 | else |
dd4c01c2 KM |
727 | vput(nd.ni_dvp); |
728 | vrele(nd.ni_vp); | |
8429d022 | 729 | return (EEXIST); |
4751dd21 | 730 | } |
3658f091 KB |
731 | VATTR_NULL(&vattr); |
732 | vattr.va_type = VFIFO; | |
7121fdf0 | 733 | vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
734 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
735 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
736 | #endif /* FIFO */ |
737 | } | |
738 | ||
3e78e260 | 739 | /* |
7121fdf0 | 740 | * Make a hard file link. |
3e78e260 | 741 | */ |
9e97623a | 742 | struct link_args { |
7121fdf0 KB |
743 | char *path; |
744 | char *link; | |
9e97623a | 745 | }; |
6a6a1e5f KM |
746 | /* ARGSUSED */ |
747 | link(p, uap, retval) | |
5e00df3b | 748 | struct proc *p; |
9e97623a | 749 | register struct link_args *uap; |
6a6a1e5f KM |
750 | int *retval; |
751 | { | |
7121fdf0 | 752 | register struct vnode *vp; |
8429d022 | 753 | struct nameidata nd; |
7121fdf0 | 754 | int error; |
3e78e260 | 755 | |
a5368812 | 756 | CHECKPOINTREF; |
7121fdf0 | 757 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 758 | if (error = namei(&nd)) |
8429d022 | 759 | return (error); |
dd4c01c2 | 760 | vp = nd.ni_vp; |
cf5ef508 KB |
761 | if (vp->v_type != VDIR || |
762 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
763 | nd.ni_cnd.cn_nameiop = CREATE; | |
764 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
765 | nd.ni_dirp = uap->link; | |
766 | if ((error = namei(&nd)) == 0) { | |
767 | if (nd.ni_vp != NULL) | |
768 | error = EEXIST; | |
769 | if (!error) { | |
770 | LEASE_CHECK(nd.ni_dvp, | |
771 | p, p->p_ucred, LEASE_WRITE); | |
772 | LEASE_CHECK(vp, | |
773 | p, p->p_ucred, LEASE_WRITE); | |
774 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); | |
775 | } else { | |
776 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
777 | if (nd.ni_dvp == nd.ni_vp) | |
778 | vrele(nd.ni_dvp); | |
779 | else | |
780 | vput(nd.ni_dvp); | |
781 | if (nd.ni_vp) | |
782 | vrele(nd.ni_vp); | |
783 | } | |
784 | } | |
66955caf | 785 | } |
cf5ef508 | 786 | vrele(vp); |
a5368812 | 787 | CHECKREFS("link"); |
8429d022 | 788 | return (error); |
3e78e260 BJ |
789 | } |
790 | ||
791 | /* | |
d4ed1dcd | 792 | * Make a symbolic link. |
3e78e260 | 793 | */ |
9e97623a | 794 | struct symlink_args { |
7121fdf0 KB |
795 | char *path; |
796 | char *link; | |
9e97623a | 797 | }; |
6a6a1e5f KM |
798 | /* ARGSUSED */ |
799 | symlink(p, uap, retval) | |
5e00df3b | 800 | struct proc *p; |
9e97623a | 801 | register struct symlink_args *uap; |
6a6a1e5f KM |
802 | int *retval; |
803 | { | |
fc2aed1e | 804 | struct vattr vattr; |
7121fdf0 | 805 | char *path; |
fc2aed1e | 806 | int error; |
8429d022 | 807 | struct nameidata nd; |
3e78e260 | 808 | |
a5368812 | 809 | CHECKPOINTREF; |
7121fdf0 KB |
810 | MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
811 | if (error = copyinstr(uap->path, path, MAXPATHLEN, NULL)) | |
66955caf | 812 | goto out; |
7121fdf0 | 813 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->link, p); |
dd4c01c2 | 814 | if (error = namei(&nd)) |
66955caf | 815 | goto out; |
dd4c01c2 KM |
816 | if (nd.ni_vp) { |
817 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
818 | if (nd.ni_dvp == nd.ni_vp) | |
819 | vrele(nd.ni_dvp); | |
6c44e83b | 820 | else |
dd4c01c2 KM |
821 | vput(nd.ni_dvp); |
822 | vrele(nd.ni_vp); | |
fc2aed1e KM |
823 | error = EEXIST; |
824 | goto out; | |
3e78e260 | 825 | } |
3ee1461b | 826 | VATTR_NULL(&vattr); |
7121fdf0 | 827 | vattr.va_mode = ACCESSPERMS &~ p->p_fd->fd_cmask; |
dd4c01c2 | 828 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
7121fdf0 | 829 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, path); |
fc2aed1e | 830 | out: |
7121fdf0 | 831 | FREE(path, M_NAMEI); |
a5368812 | 832 | CHECKREFS("symlink"); |
8429d022 | 833 | return (error); |
3e78e260 BJ |
834 | } |
835 | ||
836 | /* | |
d4ed1dcd | 837 | * Delete a name from the filesystem. |
3e78e260 | 838 | */ |
9e97623a | 839 | struct unlink_args { |
7121fdf0 | 840 | char *path; |
9e97623a | 841 | }; |
6a6a1e5f KM |
842 | /* ARGSUSED */ |
843 | unlink(p, uap, retval) | |
5e00df3b | 844 | struct proc *p; |
9e97623a | 845 | struct unlink_args *uap; |
6a6a1e5f KM |
846 | int *retval; |
847 | { | |
fc2aed1e KM |
848 | register struct vnode *vp; |
849 | int error; | |
8429d022 | 850 | struct nameidata nd; |
3e78e260 | 851 | |
a5368812 | 852 | CHECKPOINTREF; |
7121fdf0 | 853 | NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 854 | if (error = namei(&nd)) |
8429d022 | 855 | return (error); |
dd4c01c2 | 856 | vp = nd.ni_vp; |
dbcf7de6 KM |
857 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
858 | VOP_LOCK(vp); | |
7121fdf0 | 859 | |
cf5ef508 KB |
860 | if (vp->v_type != VDIR || |
861 | (error = suser(p->p_ucred, &p->p_acflag)) == 0) { | |
862 | /* | |
863 | * The root of a mounted filesystem cannot be deleted. | |
864 | */ | |
865 | if (vp->v_flag & VROOT) | |
866 | error = EBUSY; | |
867 | else | |
868 | (void)vnode_pager_uncache(vp); | |
869 | } | |
870 | ||
871 | if (!error) { | |
dd4c01c2 | 872 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 873 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 874 | } else { |
dd4c01c2 KM |
875 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
876 | if (nd.ni_dvp == vp) | |
877 | vrele(nd.ni_dvp); | |
6c44e83b | 878 | else |
dd4c01c2 | 879 | vput(nd.ni_dvp); |
66955caf KM |
880 | vput(vp); |
881 | } | |
a5368812 | 882 | CHECKREFS("unlink"); |
8429d022 | 883 | return (error); |
3e78e260 BJ |
884 | } |
885 | ||
7121fdf0 KB |
886 | /* |
887 | * Reposition read/write file offset. | |
888 | */ | |
95c0eb1e | 889 | struct lseek_args { |
7121fdf0 | 890 | int fd; |
2f2b3b3d | 891 | int pad; |
7121fdf0 KB |
892 | off_t offset; |
893 | int whence; | |
2f2b3b3d | 894 | }; |
201e5411 | 895 | lseek(p, uap, retval) |
5e00df3b | 896 | struct proc *p; |
95c0eb1e | 897 | register struct lseek_args *uap; |
9e97623a | 898 | int *retval; |
6a6a1e5f | 899 | { |
8429d022 | 900 | struct ucred *cred = p->p_ucred; |
5e00df3b | 901 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 902 | register struct file *fp; |
fc2aed1e KM |
903 | struct vattr vattr; |
904 | int error; | |
905 | ||
7121fdf0 KB |
906 | if ((u_int)uap->fd >= fdp->fd_nfiles || |
907 | (fp = fdp->fd_ofiles[uap->fd]) == NULL) | |
8429d022 | 908 | return (EBADF); |
fc2aed1e | 909 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 910 | return (ESPIPE); |
7121fdf0 | 911 | switch (uap->whence) { |
b4d1aee9 | 912 | case L_INCR: |
7121fdf0 | 913 | fp->f_offset += uap->offset; |
b4d1aee9 | 914 | break; |
b4d1aee9 | 915 | case L_XTND: |
7121fdf0 KB |
916 | if (error = |
917 | VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p)) | |
8429d022 | 918 | return (error); |
7121fdf0 | 919 | fp->f_offset = uap->offset + vattr.va_size; |
b4d1aee9 | 920 | break; |
b4d1aee9 | 921 | case L_SET: |
7121fdf0 | 922 | fp->f_offset = uap->offset; |
b4d1aee9 | 923 | break; |
b4d1aee9 | 924 | default: |
8429d022 | 925 | return (EINVAL); |
b4d1aee9 | 926 | } |
9e97623a | 927 | *(off_t *)retval = fp->f_offset; |
8429d022 | 928 | return (0); |
3e78e260 BJ |
929 | } |
930 | ||
201e5411 | 931 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
64deb204 | 932 | /* |
7121fdf0 | 933 | * Reposition read/write file offset. |
64deb204 | 934 | */ |
95c0eb1e | 935 | struct olseek_args { |
7121fdf0 KB |
936 | int fd; |
937 | long offset; | |
938 | int whence; | |
64deb204 | 939 | }; |
201e5411 | 940 | olseek(p, uap, retval) |
64deb204 | 941 | struct proc *p; |
95c0eb1e | 942 | register struct olseek_args *uap; |
64deb204 KM |
943 | int *retval; |
944 | { | |
95c0eb1e | 945 | struct lseek_args nuap; |
64deb204 KM |
946 | off_t qret; |
947 | int error; | |
948 | ||
7121fdf0 KB |
949 | nuap.fd = uap->fd; |
950 | nuap.offset = uap->offset; | |
951 | nuap.whence = uap->whence; | |
95c0eb1e | 952 | error = lseek(p, &nuap, &qret); |
64deb204 KM |
953 | *(long *)retval = qret; |
954 | return (error); | |
955 | } | |
201e5411 | 956 | #endif /* COMPAT_43 */ |
64deb204 | 957 | |
3e78e260 | 958 | /* |
d4ed1dcd | 959 | * Check access permissions. |
3e78e260 | 960 | */ |
b54e8954 | 961 | struct access_args { |
7121fdf0 KB |
962 | char *path; |
963 | int flags; | |
9e97623a | 964 | }; |
b54e8954 | 965 | access(p, uap, retval) |
5e00df3b | 966 | struct proc *p; |
b54e8954 | 967 | register struct access_args *uap; |
6a6a1e5f KM |
968 | int *retval; |
969 | { | |
8429d022 | 970 | register struct ucred *cred = p->p_ucred; |
fc2aed1e | 971 | register struct vnode *vp; |
cf5ef508 | 972 | int error, flags, t_gid, t_uid; |
8429d022 | 973 | struct nameidata nd; |
3e78e260 | 974 | |
cf5ef508 KB |
975 | t_uid = cred->cr_uid; |
976 | t_gid = cred->cr_groups[0]; | |
8429d022 MK |
977 | cred->cr_uid = p->p_cred->p_ruid; |
978 | cred->cr_groups[0] = p->p_cred->p_rgid; | |
7121fdf0 | 979 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 980 | if (error = namei(&nd)) |
fc2aed1e | 981 | goto out1; |
dd4c01c2 | 982 | vp = nd.ni_vp; |
7121fdf0 KB |
983 | |
984 | /* Flags == 0 means only check for existence. */ | |
985 | if (uap->flags) { | |
986 | flags = 0; | |
987 | if (uap->flags & R_OK) | |
988 | flags |= VREAD; | |
989 | if (uap->flags & W_OK) | |
990 | flags |= VWRITE; | |
991 | if (uap->flags & X_OK) | |
992 | flags |= VEXEC; | |
993 | if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) | |
994 | error = VOP_ACCESS(vp, flags, cred, p); | |
3e78e260 | 995 | } |
fc2aed1e KM |
996 | vput(vp); |
997 | out1: | |
cf5ef508 KB |
998 | cred->cr_uid = t_uid; |
999 | cred->cr_groups[0] = t_gid; | |
8429d022 | 1000 | return (error); |
3e78e260 | 1001 | } |
d67a03eb | 1002 | |
8932276d | 1003 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
d67a03eb | 1004 | /* |
7121fdf0 | 1005 | * Get file status; this version follows links. |
d67a03eb | 1006 | */ |
9e97623a | 1007 | struct ostat_args { |
7121fdf0 | 1008 | char *path; |
9e97623a CT |
1009 | struct ostat *ub; |
1010 | }; | |
6a6a1e5f | 1011 | /* ARGSUSED */ |
ae9b6dc3 | 1012 | ostat(p, uap, retval) |
be320a2b | 1013 | struct proc *p; |
9e97623a | 1014 | register struct ostat_args *uap; |
be320a2b KM |
1015 | int *retval; |
1016 | { | |
1017 | struct stat sb; | |
1018 | struct ostat osb; | |
1019 | int error; | |
1020 | struct nameidata nd; | |
1021 | ||
7121fdf0 | 1022 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1023 | if (error = namei(&nd)) |
1024 | return (error); | |
1025 | error = vn_stat(nd.ni_vp, &sb, p); | |
1026 | vput(nd.ni_vp); | |
1027 | if (error) | |
1028 | return (error); | |
1029 | cvtstat(&sb, &osb); | |
1030 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1031 | return (error); | |
1032 | } | |
1033 | ||
1034 | /* | |
7121fdf0 | 1035 | * Get file status; this version does not follow links. |
be320a2b | 1036 | */ |
9e97623a | 1037 | struct olstat_args { |
7121fdf0 | 1038 | char *path; |
9e97623a CT |
1039 | struct ostat *ub; |
1040 | }; | |
be320a2b | 1041 | /* ARGSUSED */ |
ae9b6dc3 | 1042 | olstat(p, uap, retval) |
be320a2b | 1043 | struct proc *p; |
9e97623a | 1044 | register struct olstat_args *uap; |
be320a2b KM |
1045 | int *retval; |
1046 | { | |
1047 | struct stat sb; | |
1048 | struct ostat osb; | |
1049 | int error; | |
1050 | struct nameidata nd; | |
1051 | ||
7121fdf0 | 1052 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
be320a2b KM |
1053 | if (error = namei(&nd)) |
1054 | return (error); | |
1055 | error = vn_stat(nd.ni_vp, &sb, p); | |
1056 | vput(nd.ni_vp); | |
1057 | if (error) | |
1058 | return (error); | |
1059 | cvtstat(&sb, &osb); | |
1060 | error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); | |
1061 | return (error); | |
1062 | } | |
1063 | ||
1064 | /* | |
7121fdf0 | 1065 | * Convert from an old to a new stat structure. |
be320a2b KM |
1066 | */ |
1067 | cvtstat(st, ost) | |
1068 | struct stat *st; | |
1069 | struct ostat *ost; | |
1070 | { | |
1071 | ||
1072 | ost->st_dev = st->st_dev; | |
1073 | ost->st_ino = st->st_ino; | |
1074 | ost->st_mode = st->st_mode; | |
1075 | ost->st_nlink = st->st_nlink; | |
1076 | ost->st_uid = st->st_uid; | |
1077 | ost->st_gid = st->st_gid; | |
1078 | ost->st_rdev = st->st_rdev; | |
1079 | if (st->st_size < (quad_t)1 << 32) | |
1080 | ost->st_size = st->st_size; | |
1081 | else | |
1082 | ost->st_size = -2; | |
1083 | ost->st_atime = st->st_atime; | |
1084 | ost->st_mtime = st->st_mtime; | |
1085 | ost->st_ctime = st->st_ctime; | |
1086 | ost->st_blksize = st->st_blksize; | |
1087 | ost->st_blocks = st->st_blocks; | |
1088 | ost->st_flags = st->st_flags; | |
1089 | ost->st_gen = st->st_gen; | |
1090 | } | |
8932276d | 1091 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
1092 | |
1093 | /* | |
7121fdf0 | 1094 | * Get file status; this version follows links. |
be320a2b | 1095 | */ |
9e97623a | 1096 | struct stat_args { |
7121fdf0 | 1097 | char *path; |
9e97623a CT |
1098 | struct stat *ub; |
1099 | }; | |
be320a2b | 1100 | /* ARGSUSED */ |
ae9b6dc3 | 1101 | stat(p, uap, retval) |
5e00df3b | 1102 | struct proc *p; |
9e97623a | 1103 | register struct stat_args *uap; |
6a6a1e5f | 1104 | int *retval; |
d67a03eb | 1105 | { |
6a6a1e5f KM |
1106 | struct stat sb; |
1107 | int error; | |
8429d022 | 1108 | struct nameidata nd; |
d67a03eb | 1109 | |
7121fdf0 | 1110 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1111 | if (error = namei(&nd)) |
8429d022 | 1112 | return (error); |
dd4c01c2 KM |
1113 | error = vn_stat(nd.ni_vp, &sb, p); |
1114 | vput(nd.ni_vp); | |
6a6a1e5f | 1115 | if (error) |
8429d022 | 1116 | return (error); |
6a6a1e5f | 1117 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1118 | return (error); |
d67a03eb BJ |
1119 | } |
1120 | ||
5485e062 | 1121 | /* |
7121fdf0 | 1122 | * Get file status; this version does not follow links. |
5485e062 | 1123 | */ |
9e97623a | 1124 | struct lstat_args { |
7121fdf0 | 1125 | char *path; |
9e97623a CT |
1126 | struct stat *ub; |
1127 | }; | |
6a6a1e5f | 1128 | /* ARGSUSED */ |
ae9b6dc3 | 1129 | lstat(p, uap, retval) |
5e00df3b | 1130 | struct proc *p; |
9e97623a | 1131 | register struct lstat_args *uap; |
6a6a1e5f KM |
1132 | int *retval; |
1133 | { | |
fc2aed1e | 1134 | int error; |
49f762b8 KM |
1135 | struct vnode *vp, *dvp; |
1136 | struct stat sb, sb1; | |
8429d022 | 1137 | struct nameidata nd; |
5485e062 | 1138 | |
49f762b8 | 1139 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, |
7121fdf0 | 1140 | uap->path, p); |
dd4c01c2 | 1141 | if (error = namei(&nd)) |
8429d022 | 1142 | return (error); |
49f762b8 KM |
1143 | /* |
1144 | * For symbolic links, always return the attributes of its | |
1145 | * containing directory, except for mode, size, and links. | |
1146 | */ | |
1147 | vp = nd.ni_vp; | |
1148 | dvp = nd.ni_dvp; | |
1149 | if (vp->v_type != VLNK) { | |
1150 | if (dvp == vp) | |
1151 | vrele(dvp); | |
1152 | else | |
1153 | vput(dvp); | |
1154 | error = vn_stat(vp, &sb, p); | |
1155 | vput(vp); | |
1156 | if (error) | |
1157 | return (error); | |
1158 | } else { | |
1159 | error = vn_stat(dvp, &sb, p); | |
1160 | vput(dvp); | |
1161 | if (error) { | |
1162 | vput(vp); | |
1163 | return (error); | |
1164 | } | |
1165 | error = vn_stat(vp, &sb1, p); | |
1166 | vput(vp); | |
1167 | if (error) | |
1168 | return (error); | |
1169 | sb.st_mode &= ~S_IFDIR; | |
1170 | sb.st_mode |= S_IFLNK; | |
1171 | sb.st_nlink = sb1.st_nlink; | |
1172 | sb.st_size = sb1.st_size; | |
1173 | sb.st_blocks = sb1.st_blocks; | |
1174 | } | |
fc2aed1e | 1175 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1176 | return (error); |
d67a03eb BJ |
1177 | } |
1178 | ||
201e5411 | 1179 | /* |
7121fdf0 | 1180 | * Get configurable pathname variables. |
201e5411 KM |
1181 | */ |
1182 | struct pathconf_args { | |
7121fdf0 | 1183 | char *path; |
201e5411 KM |
1184 | int name; |
1185 | }; | |
1186 | /* ARGSUSED */ | |
1187 | pathconf(p, uap, retval) | |
1188 | struct proc *p; | |
1189 | register struct pathconf_args *uap; | |
1190 | int *retval; | |
1191 | { | |
1192 | int error; | |
1193 | struct nameidata nd; | |
1194 | ||
7121fdf0 | 1195 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
201e5411 KM |
1196 | if (error = namei(&nd)) |
1197 | return (error); | |
1198 | error = VOP_PATHCONF(nd.ni_vp, uap->name, retval); | |
1199 | vput(nd.ni_vp); | |
1200 | return (error); | |
1201 | } | |
1202 | ||
d67a03eb | 1203 | /* |
d4ed1dcd | 1204 | * Return target name of a symbolic link. |
5485e062 | 1205 | */ |
9e97623a | 1206 | struct readlink_args { |
7121fdf0 | 1207 | char *path; |
9e97623a CT |
1208 | char *buf; |
1209 | int count; | |
1210 | }; | |
6a6a1e5f KM |
1211 | /* ARGSUSED */ |
1212 | readlink(p, uap, retval) | |
5e00df3b | 1213 | struct proc *p; |
9e97623a | 1214 | register struct readlink_args *uap; |
6a6a1e5f KM |
1215 | int *retval; |
1216 | { | |
fc2aed1e KM |
1217 | register struct vnode *vp; |
1218 | struct iovec aiov; | |
1219 | struct uio auio; | |
1220 | int error; | |
8429d022 | 1221 | struct nameidata nd; |
5485e062 | 1222 | |
a5368812 | 1223 | CHECKPOINTREF; |
7121fdf0 | 1224 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1225 | if (error = namei(&nd)) |
8429d022 | 1226 | return (error); |
dd4c01c2 | 1227 | vp = nd.ni_vp; |
7121fdf0 | 1228 | if (vp->v_type != VLNK) |
fc2aed1e | 1229 | error = EINVAL; |
7121fdf0 KB |
1230 | else { |
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; | |
1238 | auio.uio_procp = p; | |
1239 | auio.uio_resid = uap->count; | |
1240 | error = VOP_READLINK(vp, &auio, p->p_ucred); | |
5485e062 | 1241 | } |
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 | 1248 | /* |
7121fdf0 | 1249 | * Change flags of a file given a path name. |
6995a2cb | 1250 | */ |
9e97623a | 1251 | struct chflags_args { |
7121fdf0 | 1252 | char *path; |
9e97623a CT |
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 | |
7121fdf0 | 1266 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, 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); | |
7121fdf0 | 1272 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1273 | error = EROFS; |
7121fdf0 KB |
1274 | else { |
1275 | VATTR_NULL(&vattr); | |
1276 | vattr.va_flags = uap->flags; | |
1277 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1278 | } |
6995a2cb | 1279 | vput(vp); |
8429d022 | 1280 | return (error); |
6995a2cb KM |
1281 | } |
1282 | ||
1283 | /* | |
1284 | * Change flags of a file given a file descriptor. | |
1285 | */ | |
9e97623a CT |
1286 | struct fchflags_args { |
1287 | int fd; | |
1288 | int flags; | |
1289 | }; | |
6a6a1e5f KM |
1290 | /* ARGSUSED */ |
1291 | fchflags(p, uap, retval) | |
5e00df3b | 1292 | struct proc *p; |
9e97623a | 1293 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1294 | int *retval; |
1295 | { | |
6995a2cb KM |
1296 | struct vattr vattr; |
1297 | struct vnode *vp; | |
1298 | struct file *fp; | |
1299 | int error; | |
1300 | ||
5e00df3b | 1301 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1302 | return (error); |
6995a2cb | 1303 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1304 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
6995a2cb | 1305 | VOP_LOCK(vp); |
7121fdf0 | 1306 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
6995a2cb | 1307 | error = EROFS; |
7121fdf0 KB |
1308 | else { |
1309 | VATTR_NULL(&vattr); | |
1310 | vattr.va_flags = uap->flags; | |
1311 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
6995a2cb | 1312 | } |
6995a2cb | 1313 | VOP_UNLOCK(vp); |
8429d022 | 1314 | return (error); |
6995a2cb KM |
1315 | } |
1316 | ||
4f083fd7 SL |
1317 | /* |
1318 | * Change mode of a file given path name. | |
1319 | */ | |
9e97623a | 1320 | struct chmod_args { |
7121fdf0 KB |
1321 | char *path; |
1322 | int mode; | |
9e97623a | 1323 | }; |
6a6a1e5f KM |
1324 | /* ARGSUSED */ |
1325 | chmod(p, uap, retval) | |
5e00df3b | 1326 | struct proc *p; |
9e97623a | 1327 | register struct chmod_args *uap; |
6a6a1e5f KM |
1328 | int *retval; |
1329 | { | |
fc2aed1e KM |
1330 | register struct vnode *vp; |
1331 | struct vattr vattr; | |
1332 | int error; | |
8429d022 | 1333 | struct nameidata nd; |
5485e062 | 1334 | |
7121fdf0 | 1335 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1336 | if (error = namei(&nd)) |
8429d022 | 1337 | return (error); |
dd4c01c2 | 1338 | vp = nd.ni_vp; |
dbcf7de6 KM |
1339 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1340 | VOP_LOCK(vp); | |
7121fdf0 | 1341 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1342 | error = EROFS; |
7121fdf0 KB |
1343 | else { |
1344 | VATTR_NULL(&vattr); | |
1345 | vattr.va_mode = uap->mode & ALLPERMS; | |
1346 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1347 | } |
fc2aed1e | 1348 | vput(vp); |
8429d022 | 1349 | return (error); |
528f664c | 1350 | } |
f94ceb3b | 1351 | |
4f083fd7 SL |
1352 | /* |
1353 | * Change mode of a file given a file descriptor. | |
1354 | */ | |
9e97623a CT |
1355 | struct fchmod_args { |
1356 | int fd; | |
7121fdf0 | 1357 | int mode; |
9e97623a | 1358 | }; |
6a6a1e5f KM |
1359 | /* ARGSUSED */ |
1360 | fchmod(p, uap, retval) | |
5e00df3b | 1361 | struct proc *p; |
9e97623a | 1362 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1363 | int *retval; |
1364 | { | |
fc2aed1e KM |
1365 | struct vattr vattr; |
1366 | struct vnode *vp; | |
1367 | struct file *fp; | |
1368 | int error; | |
1369 | ||
5e00df3b | 1370 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1371 | return (error); |
fc2aed1e | 1372 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1373 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1374 | VOP_LOCK(vp); |
7121fdf0 | 1375 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1376 | error = EROFS; |
7121fdf0 KB |
1377 | else { |
1378 | VATTR_NULL(&vattr); | |
1379 | vattr.va_mode = uap->mode & ALLPERMS; | |
1380 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
f94ceb3b | 1381 | } |
fc2aed1e | 1382 | VOP_UNLOCK(vp); |
8429d022 | 1383 | return (error); |
5485e062 BJ |
1384 | } |
1385 | ||
4f083fd7 SL |
1386 | /* |
1387 | * Set ownership given a path name. | |
1388 | */ | |
9e97623a | 1389 | struct chown_args { |
7121fdf0 | 1390 | char *path; |
9e97623a CT |
1391 | int uid; |
1392 | int gid; | |
1393 | }; | |
6a6a1e5f KM |
1394 | /* ARGSUSED */ |
1395 | chown(p, uap, retval) | |
5e00df3b | 1396 | struct proc *p; |
9e97623a | 1397 | register struct chown_args *uap; |
6a6a1e5f KM |
1398 | int *retval; |
1399 | { | |
fc2aed1e KM |
1400 | register struct vnode *vp; |
1401 | struct vattr vattr; | |
1402 | int error; | |
8429d022 | 1403 | struct nameidata nd; |
d67a03eb | 1404 | |
7121fdf0 | 1405 | NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1406 | if (error = namei(&nd)) |
8429d022 | 1407 | return (error); |
dd4c01c2 | 1408 | vp = nd.ni_vp; |
dbcf7de6 KM |
1409 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1410 | VOP_LOCK(vp); | |
7121fdf0 | 1411 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1412 | error = EROFS; |
7121fdf0 KB |
1413 | else { |
1414 | VATTR_NULL(&vattr); | |
1415 | vattr.va_uid = uap->uid; | |
1416 | vattr.va_gid = uap->gid; | |
1417 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1418 | } |
fc2aed1e | 1419 | vput(vp); |
8429d022 | 1420 | return (error); |
528f664c | 1421 | } |
f94ceb3b | 1422 | |
4f083fd7 SL |
1423 | /* |
1424 | * Set ownership given a file descriptor. | |
1425 | */ | |
9e97623a CT |
1426 | struct fchown_args { |
1427 | int fd; | |
1428 | int uid; | |
1429 | int gid; | |
1430 | }; | |
6a6a1e5f KM |
1431 | /* ARGSUSED */ |
1432 | fchown(p, uap, retval) | |
5e00df3b | 1433 | struct proc *p; |
9e97623a | 1434 | register struct fchown_args *uap; |
6a6a1e5f KM |
1435 | int *retval; |
1436 | { | |
fc2aed1e KM |
1437 | struct vattr vattr; |
1438 | struct vnode *vp; | |
1439 | struct file *fp; | |
1440 | int error; | |
1441 | ||
5e00df3b | 1442 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1443 | return (error); |
fc2aed1e | 1444 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1445 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1446 | VOP_LOCK(vp); |
7121fdf0 | 1447 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1448 | error = EROFS; |
7121fdf0 KB |
1449 | else { |
1450 | VATTR_NULL(&vattr); | |
1451 | vattr.va_uid = uap->uid; | |
1452 | vattr.va_gid = uap->gid; | |
1453 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
fc2aed1e | 1454 | } |
fc2aed1e | 1455 | VOP_UNLOCK(vp); |
8429d022 | 1456 | return (error); |
d67a03eb BJ |
1457 | } |
1458 | ||
6a6a1e5f KM |
1459 | /* |
1460 | * Set the access and modification times of a file. | |
1461 | */ | |
9e97623a | 1462 | struct utimes_args { |
7121fdf0 | 1463 | char *path; |
9e97623a CT |
1464 | struct timeval *tptr; |
1465 | }; | |
6a6a1e5f KM |
1466 | /* ARGSUSED */ |
1467 | utimes(p, uap, retval) | |
5e00df3b | 1468 | struct proc *p; |
9e97623a | 1469 | register struct utimes_args *uap; |
6a6a1e5f KM |
1470 | int *retval; |
1471 | { | |
fc2aed1e | 1472 | register struct vnode *vp; |
bb1b75f4 | 1473 | struct timeval tv[2]; |
fc2aed1e | 1474 | struct vattr vattr; |
8e88b0cd | 1475 | int error; |
8429d022 | 1476 | struct nameidata nd; |
bb1b75f4 | 1477 | |
f8ee9a49 KB |
1478 | VATTR_NULL(&vattr); |
1479 | if (uap->tptr == NULL) { | |
1480 | microtime(&tv[0]); | |
1481 | tv[1] = tv[0]; | |
fcba749b | 1482 | vattr.va_vaflags |= VA_UTIMES_NULL; |
f8ee9a49 KB |
1483 | } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
1484 | return (error); | |
7121fdf0 | 1485 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1486 | if (error = namei(&nd)) |
8429d022 | 1487 | return (error); |
dd4c01c2 | 1488 | vp = nd.ni_vp; |
dbcf7de6 KM |
1489 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1490 | VOP_LOCK(vp); | |
7121fdf0 | 1491 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
fc2aed1e | 1492 | error = EROFS; |
7121fdf0 KB |
1493 | else { |
1494 | vattr.va_atime.ts_sec = tv[0].tv_sec; | |
1495 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1496 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1497 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
1498 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
bb1b75f4 | 1499 | } |
fc2aed1e | 1500 | vput(vp); |
8429d022 | 1501 | return (error); |
d67a03eb | 1502 | } |
64d3a787 | 1503 | |
7121fdf0 KB |
1504 | /* |
1505 | * Truncate a file given its path name. | |
1506 | */ | |
95c0eb1e | 1507 | struct truncate_args { |
7121fdf0 | 1508 | char *path; |
2f2b3b3d CT |
1509 | int pad; |
1510 | off_t length; | |
1511 | }; | |
be320a2b | 1512 | /* ARGSUSED */ |
201e5411 | 1513 | truncate(p, uap, retval) |
5e00df3b | 1514 | struct proc *p; |
95c0eb1e | 1515 | register struct truncate_args *uap; |
6a6a1e5f KM |
1516 | int *retval; |
1517 | { | |
fc2aed1e KM |
1518 | register struct vnode *vp; |
1519 | struct vattr vattr; | |
1520 | int error; | |
8429d022 | 1521 | struct nameidata nd; |
528f664c | 1522 | |
7121fdf0 | 1523 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1524 | if (error = namei(&nd)) |
8429d022 | 1525 | return (error); |
dd4c01c2 | 1526 | vp = nd.ni_vp; |
dbcf7de6 KM |
1527 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
1528 | VOP_LOCK(vp); | |
7121fdf0 | 1529 | if (vp->v_type == VDIR) |
fc2aed1e | 1530 | error = EISDIR; |
7121fdf0 KB |
1531 | else if ((error = vn_writechk(vp)) == 0 && |
1532 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p)) == 0) { | |
1533 | VATTR_NULL(&vattr); | |
1534 | vattr.va_size = uap->length; | |
1535 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); | |
528f664c | 1536 | } |
fc2aed1e | 1537 | vput(vp); |
8429d022 | 1538 | return (error); |
528f664c SL |
1539 | } |
1540 | ||
7121fdf0 KB |
1541 | /* |
1542 | * Truncate a file given a file descriptor. | |
1543 | */ | |
95c0eb1e | 1544 | struct ftruncate_args { |
2f2b3b3d CT |
1545 | int fd; |
1546 | int pad; | |
1547 | off_t length; | |
1548 | }; | |
6a6a1e5f | 1549 | /* ARGSUSED */ |
201e5411 | 1550 | ftruncate(p, uap, retval) |
5e00df3b | 1551 | struct proc *p; |
95c0eb1e | 1552 | register struct ftruncate_args *uap; |
6a6a1e5f KM |
1553 | int *retval; |
1554 | { | |
fc2aed1e KM |
1555 | struct vattr vattr; |
1556 | struct vnode *vp; | |
528f664c | 1557 | struct file *fp; |
fc2aed1e KM |
1558 | int error; |
1559 | ||
5e00df3b | 1560 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1561 | return (error); |
fc2aed1e | 1562 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1563 | return (EINVAL); |
fc2aed1e | 1564 | vp = (struct vnode *)fp->f_data; |
dbcf7de6 | 1565 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
fc2aed1e | 1566 | VOP_LOCK(vp); |
7121fdf0 | 1567 | if (vp->v_type == VDIR) |
fc2aed1e | 1568 | error = EISDIR; |
7121fdf0 KB |
1569 | else if ((error = vn_writechk(vp)) == 0) { |
1570 | VATTR_NULL(&vattr); | |
1571 | vattr.va_size = uap->length; | |
1572 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); | |
528f664c | 1573 | } |
fc2aed1e | 1574 | VOP_UNLOCK(vp); |
8429d022 | 1575 | return (error); |
4f083fd7 SL |
1576 | } |
1577 | ||
2f2b3b3d CT |
1578 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1579 | /* | |
1580 | * Truncate a file given its path name. | |
1581 | */ | |
95c0eb1e | 1582 | struct otruncate_args { |
7121fdf0 | 1583 | char *path; |
9e97623a CT |
1584 | long length; |
1585 | }; | |
2f2b3b3d | 1586 | /* ARGSUSED */ |
51a9a1cf | 1587 | otruncate(p, uap, retval) |
2f2b3b3d | 1588 | struct proc *p; |
95c0eb1e | 1589 | register struct otruncate_args *uap; |
2f2b3b3d CT |
1590 | int *retval; |
1591 | { | |
95c0eb1e | 1592 | struct truncate_args nuap; |
2f2b3b3d | 1593 | |
7121fdf0 | 1594 | nuap.path = uap->path; |
2f2b3b3d | 1595 | nuap.length = uap->length; |
95c0eb1e | 1596 | return (truncate(p, &nuap, retval)); |
2f2b3b3d CT |
1597 | } |
1598 | ||
1599 | /* | |
1600 | * Truncate a file given a file descriptor. | |
1601 | */ | |
95c0eb1e | 1602 | struct oftruncate_args { |
9e97623a CT |
1603 | int fd; |
1604 | long length; | |
1605 | }; | |
2f2b3b3d | 1606 | /* ARGSUSED */ |
51a9a1cf | 1607 | oftruncate(p, uap, retval) |
2f2b3b3d | 1608 | struct proc *p; |
95c0eb1e | 1609 | register struct oftruncate_args *uap; |
2f2b3b3d CT |
1610 | int *retval; |
1611 | { | |
95c0eb1e | 1612 | struct ftruncate_args nuap; |
2f2b3b3d CT |
1613 | |
1614 | nuap.fd = uap->fd; | |
1615 | nuap.length = uap->length; | |
95c0eb1e | 1616 | return (ftruncate(p, &nuap, retval)); |
2f2b3b3d CT |
1617 | } |
1618 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1619 | ||
4f083fd7 | 1620 | /* |
7121fdf0 | 1621 | * Sync an open file. |
4f083fd7 | 1622 | */ |
9e97623a CT |
1623 | struct fsync_args { |
1624 | int fd; | |
1625 | }; | |
6a6a1e5f KM |
1626 | /* ARGSUSED */ |
1627 | fsync(p, uap, retval) | |
5e00df3b | 1628 | struct proc *p; |
9e97623a | 1629 | struct fsync_args *uap; |
6a6a1e5f KM |
1630 | int *retval; |
1631 | { | |
e79467ea | 1632 | register struct vnode *vp; |
4f083fd7 | 1633 | struct file *fp; |
fc2aed1e | 1634 | int error; |
4f083fd7 | 1635 | |
5e00df3b | 1636 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1637 | return (error); |
e79467ea KM |
1638 | vp = (struct vnode *)fp->f_data; |
1639 | VOP_LOCK(vp); | |
09d2ef1a | 1640 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1641 | VOP_UNLOCK(vp); |
8429d022 | 1642 | return (error); |
528f664c SL |
1643 | } |
1644 | ||
4f083fd7 | 1645 | /* |
7121fdf0 KB |
1646 | * Rename files. Source and destination must either both be directories, |
1647 | * or both not be directories. If target is a directory, it must be empty. | |
4f083fd7 | 1648 | */ |
9e97623a CT |
1649 | struct rename_args { |
1650 | char *from; | |
1651 | char *to; | |
1652 | }; | |
6a6a1e5f KM |
1653 | /* ARGSUSED */ |
1654 | rename(p, uap, retval) | |
5e00df3b | 1655 | struct proc *p; |
9e97623a | 1656 | register struct rename_args *uap; |
6a6a1e5f KM |
1657 | int *retval; |
1658 | { | |
fc2aed1e | 1659 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1660 | struct nameidata fromnd, tond; |
fc2aed1e | 1661 | int error; |
4f083fd7 | 1662 | |
a5368812 | 1663 | CHECKPOINTREF; |
dd4c01c2 KM |
1664 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1665 | uap->from, p); | |
1666 | if (error = namei(&fromnd)) | |
8429d022 | 1667 | return (error); |
5718fad3 | 1668 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1669 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1670 | UIO_USERSPACE, uap->to, p); | |
1671 | if (error = namei(&tond)) { | |
cfef4373 | 1672 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1673 | vrele(fromnd.ni_dvp); |
66955caf KM |
1674 | vrele(fvp); |
1675 | goto out1; | |
1676 | } | |
fc2aed1e KM |
1677 | tdvp = tond.ni_dvp; |
1678 | tvp = tond.ni_vp; | |
1679 | if (tvp != NULL) { | |
1680 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1681 | error = ENOTDIR; |
fc2aed1e KM |
1682 | goto out; |
1683 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1684 | error = EISDIR; |
fc2aed1e | 1685 | goto out; |
a5390dce | 1686 | } |
64d3a787 | 1687 | } |
fe562f32 | 1688 | if (fvp == tdvp) |
fc2aed1e | 1689 | error = EINVAL; |
fe562f32 | 1690 | /* |
5718fad3 KM |
1691 | * If source is the same as the destination (that is the |
1692 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1693 | * then there is nothing to do. |
1694 | */ | |
5718fad3 | 1695 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1696 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1697 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1698 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1699 | error = -1; |
fc2aed1e | 1700 | out: |
66955caf | 1701 | if (!error) { |
e62d4143 KM |
1702 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1703 | if (fromnd.ni_dvp != tdvp) | |
1704 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1705 | if (tvp) | |
1706 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1707 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1708 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1709 | } else { |
cfef4373 | 1710 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1711 | if (tdvp == tvp) |
1712 | vrele(tdvp); | |
1713 | else | |
1714 | vput(tdvp); | |
66955caf KM |
1715 | if (tvp) |
1716 | vput(tvp); | |
cfef4373 | 1717 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1718 | vrele(fromnd.ni_dvp); |
66955caf | 1719 | vrele(fvp); |
64d3a787 | 1720 | } |
c03959f9 | 1721 | p->p_spare[1]--; |
5718fad3 | 1722 | vrele(tond.ni_startdir); |
dd4c01c2 | 1723 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1724 | out1: |
c03959f9 | 1725 | p->p_spare[1]--; |
5718fad3 | 1726 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1727 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1728 | CHECKREFS("rename"); |
fe562f32 | 1729 | if (error == -1) |
8429d022 MK |
1730 | return (0); |
1731 | return (error); | |
64d3a787 | 1732 | } |
88a7a62a | 1733 | |
88a7a62a | 1734 | /* |
7121fdf0 | 1735 | * Make a directory file. |
88a7a62a | 1736 | */ |
9e97623a | 1737 | struct mkdir_args { |
7121fdf0 KB |
1738 | char *path; |
1739 | int mode; | |
9e97623a | 1740 | }; |
6a6a1e5f KM |
1741 | /* ARGSUSED */ |
1742 | mkdir(p, uap, retval) | |
5e00df3b | 1743 | struct proc *p; |
9e97623a | 1744 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1745 | int *retval; |
1746 | { | |
fc2aed1e KM |
1747 | register struct vnode *vp; |
1748 | struct vattr vattr; | |
1749 | int error; | |
8429d022 | 1750 | struct nameidata nd; |
88a7a62a | 1751 | |
a5368812 | 1752 | CHECKPOINTREF; |
7121fdf0 | 1753 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1754 | if (error = namei(&nd)) |
8429d022 | 1755 | return (error); |
dd4c01c2 | 1756 | vp = nd.ni_vp; |
fc2aed1e | 1757 | if (vp != NULL) { |
dd4c01c2 KM |
1758 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1759 | if (nd.ni_dvp == vp) | |
1760 | vrele(nd.ni_dvp); | |
6c44e83b | 1761 | else |
dd4c01c2 | 1762 | vput(nd.ni_dvp); |
66955caf | 1763 | vrele(vp); |
a5368812 | 1764 | CHECKREFS("mkdir1"); |
8429d022 | 1765 | return (EEXIST); |
88a7a62a | 1766 | } |
3ee1461b | 1767 | VATTR_NULL(&vattr); |
fc2aed1e | 1768 | vattr.va_type = VDIR; |
7121fdf0 | 1769 | vattr.va_mode = (uap->mode & ACCESSPERMS) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1770 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1771 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1772 | if (!error) |
dd4c01c2 | 1773 | vput(nd.ni_vp); |
a5368812 | 1774 | CHECKREFS("mkdir2"); |
8429d022 | 1775 | return (error); |
88a7a62a SL |
1776 | } |
1777 | ||
1778 | /* | |
7121fdf0 | 1779 | * Remove a directory file. |
88a7a62a | 1780 | */ |
9e97623a | 1781 | struct rmdir_args { |
7121fdf0 | 1782 | char *path; |
9e97623a | 1783 | }; |
6a6a1e5f KM |
1784 | /* ARGSUSED */ |
1785 | rmdir(p, uap, retval) | |
5e00df3b | 1786 | struct proc *p; |
9e97623a | 1787 | struct rmdir_args *uap; |
6a6a1e5f KM |
1788 | int *retval; |
1789 | { | |
fc2aed1e KM |
1790 | register struct vnode *vp; |
1791 | int error; | |
8429d022 | 1792 | struct nameidata nd; |
88a7a62a | 1793 | |
a5368812 | 1794 | CHECKPOINTREF; |
7121fdf0 | 1795 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 1796 | if (error = namei(&nd)) |
8429d022 | 1797 | return (error); |
dd4c01c2 | 1798 | vp = nd.ni_vp; |
fc2aed1e KM |
1799 | if (vp->v_type != VDIR) { |
1800 | error = ENOTDIR; | |
88a7a62a SL |
1801 | goto out; |
1802 | } | |
1803 | /* | |
fc2aed1e | 1804 | * No rmdir "." please. |
88a7a62a | 1805 | */ |
dd4c01c2 | 1806 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1807 | error = EINVAL; |
88a7a62a SL |
1808 | goto out; |
1809 | } | |
1810 | /* | |
d4ed1dcd | 1811 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1812 | */ |
fc2aed1e KM |
1813 | if (vp->v_flag & VROOT) |
1814 | error = EBUSY; | |
88a7a62a | 1815 | out: |
66955caf | 1816 | if (!error) { |
dd4c01c2 | 1817 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1818 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1819 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1820 | } else { |
dd4c01c2 KM |
1821 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1822 | if (nd.ni_dvp == vp) | |
1823 | vrele(nd.ni_dvp); | |
6c44e83b | 1824 | else |
dd4c01c2 | 1825 | vput(nd.ni_dvp); |
66955caf KM |
1826 | vput(vp); |
1827 | } | |
a5368812 | 1828 | CHECKREFS("rmdir"); |
8429d022 | 1829 | return (error); |
88a7a62a SL |
1830 | } |
1831 | ||
3d92fa10 KM |
1832 | #ifdef COMPAT_43 |
1833 | /* | |
1834 | * Read a block of directory entries in a file system independent format. | |
1835 | */ | |
9e97623a CT |
1836 | struct ogetdirentries_args { |
1837 | int fd; | |
1838 | char *buf; | |
7121fdf0 | 1839 | u_int count; |
9e97623a CT |
1840 | long *basep; |
1841 | }; | |
3d92fa10 KM |
1842 | ogetdirentries(p, uap, retval) |
1843 | struct proc *p; | |
9e97623a | 1844 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1845 | int *retval; |
1846 | { | |
3d92fa10 KM |
1847 | register struct vnode *vp; |
1848 | struct file *fp; | |
1849 | struct uio auio, kuio; | |
1850 | struct iovec aiov, kiov; | |
1851 | struct dirent *dp, *edp; | |
1852 | caddr_t dirbuf; | |
1853 | int error, readcnt; | |
d80c3f56 | 1854 | long loff; |
3d92fa10 KM |
1855 | |
1856 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1857 | return (error); | |
1858 | if ((fp->f_flag & FREAD) == 0) | |
1859 | return (EBADF); | |
1860 | vp = (struct vnode *)fp->f_data; | |
1861 | if (vp->v_type != VDIR) | |
1862 | return (EINVAL); | |
1863 | aiov.iov_base = uap->buf; | |
1864 | aiov.iov_len = uap->count; | |
1865 | auio.uio_iov = &aiov; | |
1866 | auio.uio_iovcnt = 1; | |
1867 | auio.uio_rw = UIO_READ; | |
1868 | auio.uio_segflg = UIO_USERSPACE; | |
1869 | auio.uio_procp = p; | |
1870 | auio.uio_resid = uap->count; | |
1871 | VOP_LOCK(vp); | |
d80c3f56 | 1872 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1873 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1874 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1875 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1876 | fp->f_offset = auio.uio_offset; |
1877 | } else | |
3d92fa10 KM |
1878 | # endif |
1879 | { | |
1880 | kuio = auio; | |
1881 | kuio.uio_iov = &kiov; | |
1882 | kuio.uio_segflg = UIO_SYSSPACE; | |
1883 | kiov.iov_len = uap->count; | |
1884 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1885 | kiov.iov_base = dirbuf; | |
1886 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1887 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1888 | if (error == 0) { |
1889 | readcnt = uap->count - kuio.uio_resid; | |
1890 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1891 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1892 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1893 | /* |
30445fe6 KM |
1894 | * The expected low byte of |
1895 | * dp->d_namlen is our dp->d_type. | |
1896 | * The high MBZ byte of dp->d_namlen | |
1897 | * is our dp->d_namlen. | |
d80c3f56 | 1898 | */ |
30445fe6 KM |
1899 | dp->d_type = dp->d_namlen; |
1900 | dp->d_namlen = 0; | |
1901 | # else | |
1902 | /* | |
1903 | * The dp->d_type is the high byte | |
1904 | * of the expected dp->d_namlen, | |
1905 | * so must be zero'ed. | |
1906 | */ | |
1907 | dp->d_type = 0; | |
3d92fa10 KM |
1908 | # endif |
1909 | if (dp->d_reclen > 0) { | |
1910 | dp = (struct dirent *) | |
1911 | ((char *)dp + dp->d_reclen); | |
1912 | } else { | |
1913 | error = EIO; | |
1914 | break; | |
1915 | } | |
1916 | } | |
1917 | if (dp >= edp) | |
1918 | error = uiomove(dirbuf, readcnt, &auio); | |
1919 | } | |
1920 | FREE(dirbuf, M_TEMP); | |
1921 | } | |
3d92fa10 KM |
1922 | VOP_UNLOCK(vp); |
1923 | if (error) | |
1924 | return (error); | |
d80c3f56 | 1925 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1926 | *retval = uap->count - auio.uio_resid; |
1927 | return (error); | |
1928 | } | |
1929 | #endif | |
1930 | ||
fc2aed1e | 1931 | /* |
d4ed1dcd | 1932 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1933 | */ |
9e97623a CT |
1934 | struct getdirentries_args { |
1935 | int fd; | |
1936 | char *buf; | |
7121fdf0 | 1937 | u_int count; |
9e97623a CT |
1938 | long *basep; |
1939 | }; | |
6a6a1e5f | 1940 | getdirentries(p, uap, retval) |
5e00df3b | 1941 | struct proc *p; |
9e97623a | 1942 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1943 | int *retval; |
1944 | { | |
e79467ea | 1945 | register struct vnode *vp; |
8462a185 | 1946 | struct file *fp; |
fc2aed1e KM |
1947 | struct uio auio; |
1948 | struct iovec aiov; | |
d80c3f56 | 1949 | long loff; |
09d2ef1a | 1950 | int error; |
fc2aed1e | 1951 | |
5e00df3b | 1952 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1953 | return (error); |
fc2aed1e | 1954 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1955 | return (EBADF); |
e79467ea | 1956 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1957 | unionread: |
e79467ea | 1958 | if (vp->v_type != VDIR) |
8429d022 | 1959 | return (EINVAL); |
fc2aed1e KM |
1960 | aiov.iov_base = uap->buf; |
1961 | aiov.iov_len = uap->count; | |
1962 | auio.uio_iov = &aiov; | |
1963 | auio.uio_iovcnt = 1; | |
1964 | auio.uio_rw = UIO_READ; | |
1965 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1966 | auio.uio_procp = p; |
fc2aed1e | 1967 | auio.uio_resid = uap->count; |
e79467ea | 1968 | VOP_LOCK(vp); |
d80c3f56 | 1969 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1970 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1971 | fp->f_offset = auio.uio_offset; |
1972 | VOP_UNLOCK(vp); | |
1973 | if (error) | |
8429d022 | 1974 | return (error); |
95a9cadb JSP |
1975 | if ((uap->count == auio.uio_resid) && |
1976 | (vp->v_flag & VROOT) && | |
1977 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1978 | struct vnode *tvp = vp; | |
1979 | vp = vp->v_mount->mnt_vnodecovered; | |
1980 | VREF(vp); | |
1981 | fp->f_data = (caddr_t) vp; | |
1982 | fp->f_offset = 0; | |
1983 | vrele(tvp); | |
1984 | goto unionread; | |
1985 | } | |
d80c3f56 | 1986 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1987 | *retval = uap->count - auio.uio_resid; |
8429d022 | 1988 | return (error); |
88a7a62a SL |
1989 | } |
1990 | ||
1991 | /* | |
d4ed1dcd | 1992 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 1993 | */ |
9e97623a | 1994 | struct umask_args { |
7121fdf0 | 1995 | int newmask; |
9e97623a CT |
1996 | }; |
1997 | mode_t /* XXX */ | |
6a6a1e5f | 1998 | umask(p, uap, retval) |
5e00df3b | 1999 | struct proc *p; |
9e97623a | 2000 | struct umask_args *uap; |
6a6a1e5f KM |
2001 | int *retval; |
2002 | { | |
7121fdf0 | 2003 | register struct filedesc *fdp; |
88a7a62a | 2004 | |
7121fdf0 | 2005 | fdp = p->p_fd; |
5e00df3b | 2006 | *retval = fdp->fd_cmask; |
7121fdf0 | 2007 | fdp->fd_cmask = uap->newmask & ALLPERMS; |
8429d022 | 2008 | return (0); |
fc2aed1e KM |
2009 | } |
2010 | ||
b0a98f13 MT |
2011 | /* |
2012 | * Void all references to file by ripping underlying filesystem | |
2013 | * away from vnode. | |
2014 | */ | |
9e97623a | 2015 | struct revoke_args { |
7121fdf0 | 2016 | char *path; |
9e97623a | 2017 | }; |
6a6a1e5f KM |
2018 | /* ARGSUSED */ |
2019 | revoke(p, uap, retval) | |
5e00df3b | 2020 | struct proc *p; |
9e97623a | 2021 | register struct revoke_args *uap; |
6a6a1e5f KM |
2022 | int *retval; |
2023 | { | |
b0a98f13 MT |
2024 | register struct vnode *vp; |
2025 | struct vattr vattr; | |
2026 | int error; | |
8429d022 | 2027 | struct nameidata nd; |
b0a98f13 | 2028 | |
7121fdf0 | 2029 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
dd4c01c2 | 2030 | if (error = namei(&nd)) |
8429d022 | 2031 | return (error); |
dd4c01c2 | 2032 | vp = nd.ni_vp; |
b0a98f13 MT |
2033 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2034 | error = EINVAL; | |
2035 | goto out; | |
2036 | } | |
2c69fe14 | 2037 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2038 | goto out; |
8429d022 MK |
2039 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2040 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2041 | goto out; |
8b81d198 | 2042 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2043 | vgoneall(vp); |
b0a98f13 MT |
2044 | out: |
2045 | vrele(vp); | |
8429d022 | 2046 | return (error); |
b0a98f13 MT |
2047 | } |
2048 | ||
d4ed1dcd KM |
2049 | /* |
2050 | * Convert a user file descriptor to a kernel file entry. | |
2051 | */ | |
7121fdf0 | 2052 | getvnode(fdp, fd, fpp) |
5e00df3b | 2053 | struct filedesc *fdp; |
fc2aed1e | 2054 | struct file **fpp; |
7121fdf0 | 2055 | int fd; |
fc2aed1e KM |
2056 | { |
2057 | struct file *fp; | |
2058 | ||
7121fdf0 KB |
2059 | if ((u_int)fd >= fdp->fd_nfiles || |
2060 | (fp = fdp->fd_ofiles[fd]) == NULL) | |
fc2aed1e KM |
2061 | return (EBADF); |
2062 | if (fp->f_type != DTYPE_VNODE) | |
2063 | return (EINVAL); | |
2064 | *fpp = fp; | |
2065 | return (0); | |
88a7a62a | 2066 | } |