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 | * |
a801b5ab | 7 | * @(#)vfs_syscalls.c 7.97 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
94368568 JB |
10 | #include "param.h" |
11 | #include "systm.h" | |
8429d022 | 12 | #include "namei.h" |
5e00df3b | 13 | #include "filedesc.h" |
94368568 JB |
14 | #include "kernel.h" |
15 | #include "file.h" | |
16 | #include "stat.h" | |
fc2aed1e | 17 | #include "vnode.h" |
fc2aed1e | 18 | #include "mount.h" |
94368568 | 19 | #include "proc.h" |
94368568 | 20 | #include "uio.h" |
fc2aed1e | 21 | #include "malloc.h" |
3d92fa10 | 22 | #include "dirent.h" |
be320a2b | 23 | #include <vm/vm.h> |
88a7a62a | 24 | |
a5368812 KM |
25 | #ifdef REF_DIAGNOSTIC |
26 | #define CURCOUNT (curproc ? curproc->p_spare[0] : 0) | |
27 | #define CHECKPOINTREF int oldrefcount = CURCOUNT; | |
28 | #define CHECKREFS(F) if (oldrefcount != CURCOUNT) \ | |
29 | printf("REFCOUNT: %s, old=%d, new=%d\n", (F), oldrefcount, CURCOUNT); | |
30 | #else | |
31 | #define CHECKPOINTREF | |
32 | #define CHECKREFS(D) | |
33 | #endif | |
34 | ||
fc2aed1e KM |
35 | /* |
36 | * Virtual File System System Calls | |
37 | */ | |
3e78e260 | 38 | |
4f083fd7 | 39 | /* |
d4ed1dcd | 40 | * Mount system call. |
4f083fd7 | 41 | */ |
9e97623a CT |
42 | struct mount_args { |
43 | int type; | |
44 | char *dir; | |
45 | int flags; | |
46 | caddr_t data; | |
47 | }; | |
6a6a1e5f KM |
48 | /* ARGSUSED */ |
49 | mount(p, uap, retval) | |
5e00df3b | 50 | struct proc *p; |
9e97623a | 51 | register struct mount_args *uap; |
6a6a1e5f KM |
52 | int *retval; |
53 | { | |
d48157d5 KM |
54 | register struct vnode *vp; |
55 | register struct mount *mp; | |
47971887 | 56 | int error, flag; |
8429d022 | 57 | struct nameidata nd; |
3e78e260 | 58 | |
fc2aed1e KM |
59 | /* |
60 | * Must be super user | |
61 | */ | |
8429d022 MK |
62 | if (error = suser(p->p_ucred, &p->p_acflag)) |
63 | return (error); | |
fc2aed1e KM |
64 | /* |
65 | * Get vnode to be covered | |
66 | */ | |
dd4c01c2 KM |
67 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->dir, p); |
68 | if (error = namei(&nd)) | |
8429d022 | 69 | return (error); |
dd4c01c2 | 70 | vp = nd.ni_vp; |
54fb9dc2 | 71 | if (uap->flags & MNT_UPDATE) { |
d48157d5 KM |
72 | if ((vp->v_flag & VROOT) == 0) { |
73 | vput(vp); | |
8429d022 | 74 | return (EINVAL); |
d48157d5 KM |
75 | } |
76 | mp = vp->v_mount; | |
77 | /* | |
78 | * We allow going from read-only to read-write, | |
79 | * but not from read-write to read-only. | |
80 | */ | |
54fb9dc2 KM |
81 | if ((mp->mnt_flag & MNT_RDONLY) == 0 && |
82 | (uap->flags & MNT_RDONLY) != 0) { | |
d48157d5 | 83 | vput(vp); |
8429d022 | 84 | return (EOPNOTSUPP); /* Needs translation */ |
d48157d5 | 85 | } |
54fb9dc2 KM |
86 | flag = mp->mnt_flag; |
87 | mp->mnt_flag |= MNT_UPDATE; | |
d48157d5 KM |
88 | VOP_UNLOCK(vp); |
89 | goto update; | |
90 | } | |
95a9cadb | 91 | if (vp->v_usecount != 1 && (uap->flags & MNT_UNION) == 0) { |
fc2aed1e | 92 | vput(vp); |
8429d022 | 93 | return (EBUSY); |
fc2aed1e | 94 | } |
09d2ef1a KM |
95 | if (error = vinvalbuf(vp, 1, p->p_ucred, p)) |
96 | return (error); | |
fc2aed1e KM |
97 | if (vp->v_type != VDIR) { |
98 | vput(vp); | |
8429d022 | 99 | return (ENOTDIR); |
fc2aed1e | 100 | } |
62d239e5 | 101 | if ((unsigned long)uap->type > MOUNT_MAXTYPE || |
fc2aed1e KM |
102 | vfssw[uap->type] == (struct vfsops *)0) { |
103 | vput(vp); | |
8429d022 | 104 | return (ENODEV); |
fc2aed1e KM |
105 | } |
106 | ||
107 | /* | |
d48157d5 | 108 | * Allocate and initialize the file system. |
fc2aed1e KM |
109 | */ |
110 | mp = (struct mount *)malloc((u_long)sizeof(struct mount), | |
111 | M_MOUNT, M_WAITOK); | |
b1341251 | 112 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
54fb9dc2 | 113 | mp->mnt_op = vfssw[uap->type]; |
d48157d5 KM |
114 | if (error = vfs_lock(mp)) { |
115 | free((caddr_t)mp, M_MOUNT); | |
116 | vput(vp); | |
8429d022 | 117 | return (error); |
d48157d5 KM |
118 | } |
119 | if (vp->v_mountedhere != (struct mount *)0) { | |
120 | vfs_unlock(mp); | |
121 | free((caddr_t)mp, M_MOUNT); | |
122 | vput(vp); | |
8429d022 | 123 | return (EBUSY); |
d48157d5 | 124 | } |
d48157d5 | 125 | vp->v_mountedhere = mp; |
54fb9dc2 | 126 | mp->mnt_vnodecovered = vp; |
d48157d5 KM |
127 | update: |
128 | /* | |
129 | * Set the mount level flags. | |
130 | */ | |
54fb9dc2 KM |
131 | if (uap->flags & MNT_RDONLY) |
132 | mp->mnt_flag |= MNT_RDONLY; | |
d48157d5 | 133 | else |
54fb9dc2 KM |
134 | mp->mnt_flag &= ~MNT_RDONLY; |
135 | if (uap->flags & MNT_NOSUID) | |
136 | mp->mnt_flag |= MNT_NOSUID; | |
d48157d5 | 137 | else |
54fb9dc2 KM |
138 | mp->mnt_flag &= ~MNT_NOSUID; |
139 | if (uap->flags & MNT_NOEXEC) | |
140 | mp->mnt_flag |= MNT_NOEXEC; | |
d48157d5 | 141 | else |
54fb9dc2 KM |
142 | mp->mnt_flag &= ~MNT_NOEXEC; |
143 | if (uap->flags & MNT_NODEV) | |
144 | mp->mnt_flag |= MNT_NODEV; | |
d48157d5 | 145 | else |
54fb9dc2 KM |
146 | mp->mnt_flag &= ~MNT_NODEV; |
147 | if (uap->flags & MNT_SYNCHRONOUS) | |
148 | mp->mnt_flag |= MNT_SYNCHRONOUS; | |
d48157d5 | 149 | else |
54fb9dc2 | 150 | mp->mnt_flag &= ~MNT_SYNCHRONOUS; |
95a9cadb JSP |
151 | if (uap->flags & MNT_UNION) |
152 | mp->mnt_flag |= MNT_UNION; | |
153 | else | |
154 | mp->mnt_flag &= ~MNT_UNION; | |
d48157d5 KM |
155 | /* |
156 | * Mount the filesystem. | |
157 | */ | |
dd4c01c2 | 158 | error = VFS_MOUNT(mp, uap->dir, uap->data, &nd, p); |
54fb9dc2 KM |
159 | if (mp->mnt_flag & MNT_UPDATE) { |
160 | mp->mnt_flag &= ~MNT_UPDATE; | |
d48157d5 | 161 | vrele(vp); |
47971887 | 162 | if (error) |
54fb9dc2 | 163 | mp->mnt_flag = flag; |
8429d022 | 164 | return (error); |
d48157d5 | 165 | } |
92d0de98 KM |
166 | /* |
167 | * Put the new filesystem on the mount list after root. | |
168 | */ | |
54fb9dc2 KM |
169 | mp->mnt_next = rootfs->mnt_next; |
170 | mp->mnt_prev = rootfs; | |
171 | rootfs->mnt_next = mp; | |
172 | mp->mnt_next->mnt_prev = mp; | |
fc2aed1e | 173 | cache_purge(vp); |
fc2aed1e | 174 | if (!error) { |
d48157d5 | 175 | VOP_UNLOCK(vp); |
fc2aed1e | 176 | vfs_unlock(mp); |
2c69fe14 | 177 | error = VFS_START(mp, 0, p); |
fc2aed1e KM |
178 | } else { |
179 | vfs_remove(mp); | |
180 | free((caddr_t)mp, M_MOUNT); | |
d48157d5 | 181 | vput(vp); |
fc2aed1e | 182 | } |
8429d022 | 183 | return (error); |
3e78e260 BJ |
184 | } |
185 | ||
4f083fd7 | 186 | /* |
fc2aed1e KM |
187 | * Unmount system call. |
188 | * | |
189 | * Note: unmount takes a path to the vnode mounted on as argument, | |
190 | * not special file (as before). | |
4f083fd7 | 191 | */ |
9e97623a CT |
192 | struct unmount_args { |
193 | char *pathp; | |
194 | int flags; | |
195 | }; | |
6a6a1e5f KM |
196 | /* ARGSUSED */ |
197 | unmount(p, uap, retval) | |
5e00df3b | 198 | struct proc *p; |
9e97623a | 199 | register struct unmount_args *uap; |
6a6a1e5f KM |
200 | int *retval; |
201 | { | |
fc2aed1e | 202 | register struct vnode *vp; |
9151110e | 203 | struct mount *mp; |
fc2aed1e | 204 | int error; |
8429d022 | 205 | struct nameidata nd; |
fc2aed1e KM |
206 | |
207 | /* | |
208 | * Must be super user | |
209 | */ | |
8429d022 MK |
210 | if (error = suser(p->p_ucred, &p->p_acflag)) |
211 | return (error); | |
fc2aed1e | 212 | |
dd4c01c2 KM |
213 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->pathp, p); |
214 | if (error = namei(&nd)) | |
8429d022 | 215 | return (error); |
dd4c01c2 | 216 | vp = nd.ni_vp; |
fc2aed1e KM |
217 | /* |
218 | * Must be the root of the filesystem | |
219 | */ | |
220 | if ((vp->v_flag & VROOT) == 0) { | |
221 | vput(vp); | |
8429d022 | 222 | return (EINVAL); |
fc2aed1e KM |
223 | } |
224 | mp = vp->v_mount; | |
225 | vput(vp); | |
2c69fe14 | 226 | return (dounmount(mp, uap->flags, p)); |
9151110e KM |
227 | } |
228 | ||
229 | /* | |
230 | * Do an unmount. | |
231 | */ | |
2c69fe14 | 232 | dounmount(mp, flags, p) |
9151110e KM |
233 | register struct mount *mp; |
234 | int flags; | |
2c69fe14 | 235 | struct proc *p; |
9151110e KM |
236 | { |
237 | struct vnode *coveredvp; | |
238 | int error; | |
239 | ||
54fb9dc2 | 240 | coveredvp = mp->mnt_vnodecovered; |
c001b1c3 KM |
241 | if (vfs_busy(mp)) |
242 | return (EBUSY); | |
54fb9dc2 | 243 | mp->mnt_flag |= MNT_UNMOUNT; |
fc2aed1e | 244 | if (error = vfs_lock(mp)) |
9151110e | 245 | return (error); |
fc2aed1e | 246 | |
9db58063 | 247 | vnode_pager_umount(mp); /* release cached vnodes */ |
fc2aed1e | 248 | cache_purgevfs(mp); /* remove cache entries for this file sys */ |
09d2ef1a KM |
249 | if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || |
250 | (flags & MNT_FORCE)) | |
2c69fe14 | 251 | error = VFS_UNMOUNT(mp, flags, p); |
54fb9dc2 | 252 | mp->mnt_flag &= ~MNT_UNMOUNT; |
c001b1c3 | 253 | vfs_unbusy(mp); |
fc2aed1e KM |
254 | if (error) { |
255 | vfs_unlock(mp); | |
256 | } else { | |
257 | vrele(coveredvp); | |
258 | vfs_remove(mp); | |
ea2761aa KM |
259 | if (mp->mnt_mounth != NULL) |
260 | panic("unmount: dangling vnode"); | |
fc2aed1e KM |
261 | free((caddr_t)mp, M_MOUNT); |
262 | } | |
9151110e | 263 | return (error); |
fc2aed1e KM |
264 | } |
265 | ||
266 | /* | |
267 | * Sync system call. | |
268 | * Sync each mounted filesystem. | |
269 | */ | |
9e97623a CT |
270 | struct sync_args { |
271 | int dummy; | |
272 | }; | |
ff4fb102 | 273 | /* ARGSUSED */ |
6a6a1e5f | 274 | sync(p, uap, retval) |
5e00df3b | 275 | struct proc *p; |
9e97623a | 276 | struct sync_args *uap; |
6a6a1e5f | 277 | int *retval; |
3e78e260 | 278 | { |
fc2aed1e | 279 | register struct mount *mp; |
c001b1c3 | 280 | struct mount *omp; |
fc2aed1e KM |
281 | |
282 | mp = rootfs; | |
283 | do { | |
62e35d50 KM |
284 | /* |
285 | * The lock check below is to avoid races with mount | |
286 | * and unmount. | |
287 | */ | |
54fb9dc2 | 288 | if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && |
c001b1c3 | 289 | !vfs_busy(mp)) { |
09d2ef1a | 290 | VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); |
c001b1c3 | 291 | omp = mp; |
54fb9dc2 | 292 | mp = mp->mnt_next; |
c001b1c3 KM |
293 | vfs_unbusy(omp); |
294 | } else | |
54fb9dc2 | 295 | mp = mp->mnt_next; |
fc2aed1e | 296 | } while (mp != rootfs); |
78eeb014 | 297 | return (0); |
fc2aed1e KM |
298 | } |
299 | ||
c001b1c3 | 300 | /* |
d4ed1dcd | 301 | * Operate on filesystem quotas. |
c001b1c3 | 302 | */ |
9e97623a CT |
303 | struct quotactl_args { |
304 | char *path; | |
305 | int cmd; | |
306 | int uid; | |
307 | caddr_t arg; | |
308 | }; | |
6a6a1e5f KM |
309 | /* ARGSUSED */ |
310 | quotactl(p, uap, retval) | |
5e00df3b | 311 | struct proc *p; |
9e97623a | 312 | register struct quotactl_args *uap; |
6a6a1e5f KM |
313 | int *retval; |
314 | { | |
c001b1c3 | 315 | register struct mount *mp; |
c001b1c3 | 316 | int error; |
8429d022 | 317 | struct nameidata nd; |
c001b1c3 | 318 | |
dd4c01c2 KM |
319 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
320 | if (error = namei(&nd)) | |
8429d022 | 321 | return (error); |
dd4c01c2 KM |
322 | mp = nd.ni_vp->v_mount; |
323 | vrele(nd.ni_vp); | |
2c69fe14 | 324 | return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); |
c001b1c3 KM |
325 | } |
326 | ||
fc2aed1e | 327 | /* |
d4ed1dcd | 328 | * Get filesystem statistics. |
fc2aed1e | 329 | */ |
9e97623a CT |
330 | struct statfs_args { |
331 | char *path; | |
332 | struct statfs *buf; | |
333 | }; | |
6a6a1e5f KM |
334 | /* ARGSUSED */ |
335 | statfs(p, uap, retval) | |
5e00df3b | 336 | struct proc *p; |
9e97623a | 337 | register struct statfs_args *uap; |
6a6a1e5f KM |
338 | int *retval; |
339 | { | |
3f705640 | 340 | register struct mount *mp; |
62e35d50 | 341 | register struct statfs *sp; |
fc2aed1e | 342 | int error; |
8429d022 | 343 | struct nameidata nd; |
3e78e260 | 344 | |
dd4c01c2 KM |
345 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); |
346 | if (error = namei(&nd)) | |
8429d022 | 347 | return (error); |
dd4c01c2 | 348 | mp = nd.ni_vp->v_mount; |
54fb9dc2 | 349 | sp = &mp->mnt_stat; |
dd4c01c2 | 350 | vrele(nd.ni_vp); |
2c69fe14 | 351 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 352 | return (error); |
54fb9dc2 | 353 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 354 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
fc2aed1e KM |
355 | } |
356 | ||
6a6a1e5f | 357 | /* |
d4ed1dcd | 358 | * Get filesystem statistics. |
6a6a1e5f | 359 | */ |
9e97623a CT |
360 | struct fstatfs_args { |
361 | int fd; | |
362 | struct statfs *buf; | |
363 | }; | |
6a6a1e5f KM |
364 | /* ARGSUSED */ |
365 | fstatfs(p, uap, retval) | |
5e00df3b | 366 | struct proc *p; |
9e97623a | 367 | register struct fstatfs_args *uap; |
6a6a1e5f KM |
368 | int *retval; |
369 | { | |
fc2aed1e | 370 | struct file *fp; |
3f705640 | 371 | struct mount *mp; |
62e35d50 | 372 | register struct statfs *sp; |
fc2aed1e KM |
373 | int error; |
374 | ||
5e00df3b | 375 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 376 | return (error); |
3f705640 | 377 | mp = ((struct vnode *)fp->f_data)->v_mount; |
54fb9dc2 | 378 | sp = &mp->mnt_stat; |
2c69fe14 | 379 | if (error = VFS_STATFS(mp, sp, p)) |
8429d022 | 380 | return (error); |
54fb9dc2 | 381 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
8429d022 | 382 | return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); |
3e78e260 BJ |
383 | } |
384 | ||
bfcdbfbf | 385 | /* |
d4ed1dcd | 386 | * Get statistics on all filesystems. |
bfcdbfbf | 387 | */ |
9e97623a CT |
388 | struct getfsstat_args { |
389 | struct statfs *buf; | |
390 | long bufsize; | |
391 | int flags; | |
392 | }; | |
6a6a1e5f | 393 | getfsstat(p, uap, retval) |
5e00df3b | 394 | struct proc *p; |
9e97623a | 395 | register struct getfsstat_args *uap; |
6a6a1e5f KM |
396 | int *retval; |
397 | { | |
bfcdbfbf | 398 | register struct mount *mp; |
62e35d50 | 399 | register struct statfs *sp; |
f62fad9a | 400 | caddr_t sfsp; |
bfcdbfbf KM |
401 | long count, maxcount, error; |
402 | ||
403 | maxcount = uap->bufsize / sizeof(struct statfs); | |
f62fad9a | 404 | sfsp = (caddr_t)uap->buf; |
bfcdbfbf KM |
405 | mp = rootfs; |
406 | count = 0; | |
407 | do { | |
54fb9dc2 KM |
408 | if (sfsp && count < maxcount && |
409 | ((mp->mnt_flag & MNT_MLOCK) == 0)) { | |
410 | sp = &mp->mnt_stat; | |
62e35d50 KM |
411 | /* |
412 | * If MNT_NOWAIT is specified, do not refresh the | |
413 | * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. | |
414 | */ | |
415 | if (((uap->flags & MNT_NOWAIT) == 0 || | |
416 | (uap->flags & MNT_WAIT)) && | |
2c69fe14 | 417 | (error = VFS_STATFS(mp, sp, p))) { |
54fb9dc2 | 418 | mp = mp->mnt_prev; |
fd8516be KM |
419 | continue; |
420 | } | |
54fb9dc2 | 421 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; |
62e35d50 | 422 | if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) |
8429d022 | 423 | return (error); |
62e35d50 | 424 | sfsp += sizeof(*sp); |
bfcdbfbf | 425 | } |
f62fad9a | 426 | count++; |
54fb9dc2 | 427 | mp = mp->mnt_prev; |
bfcdbfbf KM |
428 | } while (mp != rootfs); |
429 | if (sfsp && count > maxcount) | |
6a6a1e5f | 430 | *retval = maxcount; |
bfcdbfbf | 431 | else |
6a6a1e5f | 432 | *retval = count; |
8429d022 | 433 | return (0); |
bfcdbfbf KM |
434 | } |
435 | ||
6995a2cb KM |
436 | /* |
437 | * Change current working directory to a given file descriptor. | |
438 | */ | |
9e97623a CT |
439 | struct fchdir_args { |
440 | int fd; | |
441 | }; | |
6a6a1e5f KM |
442 | /* ARGSUSED */ |
443 | fchdir(p, uap, retval) | |
5e00df3b | 444 | struct proc *p; |
9e97623a | 445 | struct fchdir_args *uap; |
6a6a1e5f KM |
446 | int *retval; |
447 | { | |
5e00df3b | 448 | register struct filedesc *fdp = p->p_fd; |
6995a2cb KM |
449 | register struct vnode *vp; |
450 | struct file *fp; | |
451 | int error; | |
452 | ||
5e00df3b | 453 | if (error = getvnode(fdp, uap->fd, &fp)) |
8429d022 | 454 | return (error); |
6995a2cb KM |
455 | vp = (struct vnode *)fp->f_data; |
456 | VOP_LOCK(vp); | |
457 | if (vp->v_type != VDIR) | |
458 | error = ENOTDIR; | |
459 | else | |
2c69fe14 | 460 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
6995a2cb | 461 | VOP_UNLOCK(vp); |
ab214c34 | 462 | if (error) |
8429d022 | 463 | return (error); |
ab214c34 | 464 | VREF(vp); |
5e00df3b KM |
465 | vrele(fdp->fd_cdir); |
466 | fdp->fd_cdir = vp; | |
8429d022 | 467 | return (0); |
6995a2cb KM |
468 | } |
469 | ||
4f083fd7 | 470 | /* |
fc2aed1e | 471 | * Change current working directory (``.''). |
4f083fd7 | 472 | */ |
9e97623a CT |
473 | struct chdir_args { |
474 | char *fname; | |
475 | }; | |
6a6a1e5f KM |
476 | /* ARGSUSED */ |
477 | chdir(p, uap, retval) | |
5e00df3b | 478 | struct proc *p; |
9e97623a | 479 | struct chdir_args *uap; |
6a6a1e5f KM |
480 | int *retval; |
481 | { | |
5e00df3b | 482 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 483 | int error; |
8429d022 | 484 | struct nameidata nd; |
3e78e260 | 485 | |
dd4c01c2 | 486 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 487 | if (error = chdirec(&nd, p)) |
8429d022 | 488 | return (error); |
5e00df3b | 489 | vrele(fdp->fd_cdir); |
dd4c01c2 | 490 | fdp->fd_cdir = nd.ni_vp; |
8429d022 | 491 | return (0); |
fc2aed1e KM |
492 | } |
493 | ||
494 | /* | |
495 | * Change notion of root (``/'') directory. | |
496 | */ | |
9e97623a CT |
497 | struct chroot_args { |
498 | char *fname; | |
499 | }; | |
6a6a1e5f KM |
500 | /* ARGSUSED */ |
501 | chroot(p, uap, retval) | |
5e00df3b | 502 | struct proc *p; |
9e97623a | 503 | struct chroot_args *uap; |
6a6a1e5f KM |
504 | int *retval; |
505 | { | |
5e00df3b | 506 | register struct filedesc *fdp = p->p_fd; |
fc2aed1e | 507 | int error; |
8429d022 | 508 | struct nameidata nd; |
fc2aed1e | 509 | |
8429d022 MK |
510 | if (error = suser(p->p_ucred, &p->p_acflag)) |
511 | return (error); | |
dd4c01c2 | 512 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
944f2614 | 513 | if (error = chdirec(&nd, p)) |
8429d022 | 514 | return (error); |
5e00df3b KM |
515 | if (fdp->fd_rdir != NULL) |
516 | vrele(fdp->fd_rdir); | |
dd4c01c2 | 517 | fdp->fd_rdir = nd.ni_vp; |
8429d022 | 518 | return (0); |
fc2aed1e KM |
519 | } |
520 | ||
521 | /* | |
522 | * Common routine for chroot and chdir. | |
523 | */ | |
8429d022 | 524 | chdirec(ndp, p) |
dd4c01c2 | 525 | register struct nameidata *ndp; |
8429d022 | 526 | struct proc *p; |
fc2aed1e KM |
527 | { |
528 | struct vnode *vp; | |
529 | int error; | |
530 | ||
dd4c01c2 | 531 | if (error = namei(ndp)) |
fc2aed1e KM |
532 | return (error); |
533 | vp = ndp->ni_vp; | |
534 | if (vp->v_type != VDIR) | |
535 | error = ENOTDIR; | |
536 | else | |
2c69fe14 | 537 | error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); |
fc2aed1e KM |
538 | VOP_UNLOCK(vp); |
539 | if (error) | |
540 | vrele(vp); | |
541 | return (error); | |
3e78e260 BJ |
542 | } |
543 | ||
544 | /* | |
545 | * Open system call. | |
6a6a1e5f KM |
546 | * Check permissions, allocate an open file structure, |
547 | * and call the device open routine if any. | |
3e78e260 | 548 | */ |
9e97623a CT |
549 | struct open_args { |
550 | char *fname; | |
551 | int mode; | |
552 | int crtmode; | |
553 | }; | |
6a6a1e5f | 554 | open(p, uap, retval) |
5e00df3b | 555 | struct proc *p; |
9e97623a | 556 | register struct open_args *uap; |
6a6a1e5f | 557 | int *retval; |
3e78e260 | 558 | { |
5e00df3b | 559 | register struct filedesc *fdp = p->p_fd; |
3e78e260 | 560 | register struct file *fp; |
6aaf085a | 561 | register struct vnode *vp; |
6a6a1e5f | 562 | int fmode, cmode; |
fc2aed1e | 563 | struct file *nfp; |
ff8d1617 KM |
564 | int type, indx, error; |
565 | struct flock lf; | |
8429d022 | 566 | struct nameidata nd; |
fc2aed1e KM |
567 | extern struct fileops vnops; |
568 | ||
5e00df3b | 569 | if (error = falloc(p, &nfp, &indx)) |
8429d022 | 570 | return (error); |
fc2aed1e | 571 | fp = nfp; |
13b8b20b | 572 | fmode = FFLAGS(uap->mode); |
5e00df3b | 573 | cmode = ((uap->crtmode &~ fdp->fd_cmask) & 07777) &~ S_ISVTX; |
dd4c01c2 | 574 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
03951846 | 575 | p->p_dupfd = -indx - 1; /* XXX check for fdopen */ |
dd4c01c2 | 576 | if (error = vn_open(&nd, fmode, cmode)) { |
336f999d | 577 | ffree(fp); |
f0e12026 KM |
578 | if ((error == ENODEV || error == ENXIO) && |
579 | p->p_dupfd >= 0 && /* XXX from fdopen */ | |
da5acac3 JSP |
580 | (error = dupfdopen(fdp, indx, p->p_dupfd, |
581 | fmode, error)) == 0) { | |
6a6a1e5f | 582 | *retval = indx; |
8429d022 | 583 | return (0); |
6a6a1e5f | 584 | } |
b10521d6 KM |
585 | if (error == ERESTART) |
586 | error = EINTR; | |
78eeb014 | 587 | fdp->fd_ofiles[indx] = NULL; |
8429d022 | 588 | return (error); |
528f664c | 589 | } |
da5acac3 | 590 | p->p_dupfd = 0; |
dd4c01c2 | 591 | vp = nd.ni_vp; |
b40ecf6f | 592 | fp->f_flag = fmode & FMASK; |
8932276d KM |
593 | fp->f_type = DTYPE_VNODE; |
594 | fp->f_ops = &vnops; | |
595 | fp->f_data = (caddr_t)vp; | |
ff8d1617 KM |
596 | if (fmode & (O_EXLOCK | O_SHLOCK)) { |
597 | lf.l_whence = SEEK_SET; | |
598 | lf.l_start = 0; | |
599 | lf.l_len = 0; | |
600 | if (fmode & O_EXLOCK) | |
601 | lf.l_type = F_WRLCK; | |
602 | else | |
603 | lf.l_type = F_RDLCK; | |
604 | type = F_FLOCK; | |
605 | if ((fmode & FNONBLOCK) == 0) | |
606 | type |= F_WAIT; | |
6aaf085a KM |
607 | if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { |
608 | VOP_UNLOCK(vp); | |
609 | (void) vn_close(vp, fp->f_flag, fp->f_cred, p); | |
336f999d | 610 | ffree(fp); |
ff8d1617 KM |
611 | fdp->fd_ofiles[indx] = NULL; |
612 | return (error); | |
613 | } | |
b40ecf6f | 614 | fp->f_flag |= FHASLOCK; |
ff8d1617 | 615 | } |
6aaf085a | 616 | VOP_UNLOCK(vp); |
6a6a1e5f | 617 | *retval = indx; |
8429d022 | 618 | return (0); |
3e78e260 BJ |
619 | } |
620 | ||
4fde03dc | 621 | #ifdef COMPAT_43 |
3e78e260 | 622 | /* |
6a6a1e5f | 623 | * Creat system call. |
3e78e260 | 624 | */ |
9e97623a CT |
625 | struct ocreat_args { |
626 | char *fname; | |
627 | int fmode; | |
628 | }; | |
4fde03dc | 629 | ocreat(p, uap, retval) |
6a6a1e5f | 630 | struct proc *p; |
9e97623a | 631 | register struct ocreat_args *uap; |
6a6a1e5f | 632 | int *retval; |
3e78e260 | 633 | { |
9e97623a | 634 | struct open_args openuap; |
6a6a1e5f KM |
635 | |
636 | openuap.fname = uap->fname; | |
637 | openuap.crtmode = uap->fmode; | |
638 | openuap.mode = O_WRONLY | O_CREAT | O_TRUNC; | |
8429d022 | 639 | return (open(p, &openuap, retval)); |
6a6a1e5f | 640 | } |
4fde03dc | 641 | #endif /* COMPAT_43 */ |
6a6a1e5f KM |
642 | |
643 | /* | |
d4ed1dcd | 644 | * Mknod system call. |
6a6a1e5f | 645 | */ |
9e97623a CT |
646 | struct mknod_args { |
647 | char *fname; | |
648 | int fmode; | |
649 | int dev; | |
650 | }; | |
6a6a1e5f KM |
651 | /* ARGSUSED */ |
652 | mknod(p, uap, retval) | |
5e00df3b | 653 | struct proc *p; |
9e97623a | 654 | register struct mknod_args *uap; |
6a6a1e5f KM |
655 | int *retval; |
656 | { | |
fc2aed1e KM |
657 | register struct vnode *vp; |
658 | struct vattr vattr; | |
659 | int error; | |
8429d022 | 660 | struct nameidata nd; |
3e78e260 | 661 | |
a5368812 | 662 | CHECKPOINTREF; |
8429d022 MK |
663 | if (error = suser(p->p_ucred, &p->p_acflag)) |
664 | return (error); | |
dd4c01c2 KM |
665 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
666 | if (error = namei(&nd)) | |
8429d022 | 667 | return (error); |
dd4c01c2 | 668 | vp = nd.ni_vp; |
fc2aed1e KM |
669 | if (vp != NULL) { |
670 | error = EEXIST; | |
88a7a62a | 671 | goto out; |
3e78e260 | 672 | } |
3ee1461b | 673 | VATTR_NULL(&vattr); |
ab389897 | 674 | switch (uap->fmode & S_IFMT) { |
88a7a62a | 675 | |
ab389897 | 676 | case S_IFMT: /* used by badsect to flag bad sectors */ |
fc2aed1e KM |
677 | vattr.va_type = VBAD; |
678 | break; | |
ab389897 | 679 | case S_IFCHR: |
fc2aed1e KM |
680 | vattr.va_type = VCHR; |
681 | break; | |
ab389897 | 682 | case S_IFBLK: |
fc2aed1e KM |
683 | vattr.va_type = VBLK; |
684 | break; | |
685 | default: | |
686 | error = EINVAL; | |
687 | goto out; | |
3e78e260 | 688 | } |
5e00df3b | 689 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
fc2aed1e | 690 | vattr.va_rdev = uap->dev; |
3e78e260 | 691 | out: |
66955caf | 692 | if (!error) { |
dd4c01c2 KM |
693 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
694 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
66955caf | 695 | } else { |
dd4c01c2 KM |
696 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
697 | if (nd.ni_dvp == vp) | |
698 | vrele(nd.ni_dvp); | |
6c44e83b | 699 | else |
dd4c01c2 | 700 | vput(nd.ni_dvp); |
66955caf KM |
701 | if (vp) |
702 | vrele(vp); | |
703 | } | |
a5368812 | 704 | CHECKREFS("mknod"); |
8429d022 | 705 | return (error); |
3e78e260 BJ |
706 | } |
707 | ||
4751dd21 | 708 | /* |
d4ed1dcd | 709 | * Mkfifo system call. |
4751dd21 | 710 | */ |
9e97623a CT |
711 | struct mkfifo_args { |
712 | char *fname; | |
713 | int fmode; | |
714 | }; | |
6a6a1e5f KM |
715 | /* ARGSUSED */ |
716 | mkfifo(p, uap, retval) | |
5e00df3b | 717 | struct proc *p; |
9e97623a | 718 | register struct mkfifo_args *uap; |
6a6a1e5f KM |
719 | int *retval; |
720 | { | |
4751dd21 KM |
721 | struct vattr vattr; |
722 | int error; | |
8429d022 | 723 | struct nameidata nd; |
4751dd21 KM |
724 | |
725 | #ifndef FIFO | |
8429d022 | 726 | return (EOPNOTSUPP); |
4751dd21 | 727 | #else |
dd4c01c2 KM |
728 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->fname, p); |
729 | if (error = namei(&nd)) | |
8429d022 | 730 | return (error); |
dd4c01c2 KM |
731 | if (nd.ni_vp != NULL) { |
732 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
733 | if (nd.ni_dvp == nd.ni_vp) | |
734 | vrele(nd.ni_dvp); | |
6c44e83b | 735 | else |
dd4c01c2 KM |
736 | vput(nd.ni_dvp); |
737 | vrele(nd.ni_vp); | |
8429d022 | 738 | return (EEXIST); |
4751dd21 | 739 | } |
3658f091 KB |
740 | VATTR_NULL(&vattr); |
741 | vattr.va_type = VFIFO; | |
5e00df3b | 742 | vattr.va_mode = (uap->fmode & 07777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
743 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
744 | return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); | |
4751dd21 KM |
745 | #endif /* FIFO */ |
746 | } | |
747 | ||
3e78e260 | 748 | /* |
d4ed1dcd | 749 | * Link system call. |
3e78e260 | 750 | */ |
9e97623a CT |
751 | struct link_args { |
752 | char *target; | |
753 | char *linkname; | |
754 | }; | |
6a6a1e5f KM |
755 | /* ARGSUSED */ |
756 | link(p, uap, retval) | |
5e00df3b | 757 | struct proc *p; |
9e97623a | 758 | register struct link_args *uap; |
6a6a1e5f KM |
759 | int *retval; |
760 | { | |
fc2aed1e KM |
761 | register struct vnode *vp, *xp; |
762 | int error; | |
8429d022 | 763 | struct nameidata nd; |
3e78e260 | 764 | |
a5368812 | 765 | CHECKPOINTREF; |
dd4c01c2 KM |
766 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->target, p); |
767 | if (error = namei(&nd)) | |
8429d022 | 768 | return (error); |
dd4c01c2 | 769 | vp = nd.ni_vp; |
fc2aed1e | 770 | if (vp->v_type == VDIR && |
8429d022 | 771 | (error = suser(p->p_ucred, &p->p_acflag))) |
fc2aed1e | 772 | goto out1; |
dd4c01c2 KM |
773 | nd.ni_cnd.cn_nameiop = CREATE; |
774 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
775 | nd.ni_dirp = (caddr_t)uap->linkname; | |
776 | if (error = namei(&nd)) | |
fc2aed1e | 777 | goto out1; |
dd4c01c2 | 778 | xp = nd.ni_vp; |
3e78e260 | 779 | if (xp != NULL) { |
fc2aed1e | 780 | error = EEXIST; |
3e78e260 BJ |
781 | goto out; |
782 | } | |
dd4c01c2 | 783 | xp = nd.ni_dvp; |
3e78e260 | 784 | out: |
66955caf | 785 | if (!error) { |
e62d4143 KM |
786 | LEASE_CHECK(xp, p, p->p_ucred, LEASE_WRITE); |
787 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); | |
532a2b44 | 788 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); |
66955caf | 789 | } else { |
dd4c01c2 KM |
790 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
791 | if (nd.ni_dvp == nd.ni_vp) | |
792 | vrele(nd.ni_dvp); | |
6c44e83b | 793 | else |
dd4c01c2 KM |
794 | vput(nd.ni_dvp); |
795 | if (nd.ni_vp) | |
796 | vrele(nd.ni_vp); | |
66955caf | 797 | } |
fc2aed1e KM |
798 | out1: |
799 | vrele(vp); | |
a5368812 | 800 | CHECKREFS("link"); |
8429d022 | 801 | return (error); |
3e78e260 BJ |
802 | } |
803 | ||
804 | /* | |
d4ed1dcd | 805 | * Make a symbolic link. |
3e78e260 | 806 | */ |
9e97623a CT |
807 | struct symlink_args { |
808 | char *target; | |
809 | char *linkname; | |
810 | }; | |
6a6a1e5f KM |
811 | /* ARGSUSED */ |
812 | symlink(p, uap, retval) | |
5e00df3b | 813 | struct proc *p; |
9e97623a | 814 | register struct symlink_args *uap; |
6a6a1e5f KM |
815 | int *retval; |
816 | { | |
fc2aed1e KM |
817 | struct vattr vattr; |
818 | char *target; | |
819 | int error; | |
8429d022 | 820 | struct nameidata nd; |
3e78e260 | 821 | |
a5368812 | 822 | CHECKPOINTREF; |
fc2aed1e KM |
823 | MALLOC(target, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); |
824 | if (error = copyinstr(uap->target, target, MAXPATHLEN, (u_int *)0)) | |
66955caf | 825 | goto out; |
dd4c01c2 KM |
826 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->linkname, p); |
827 | if (error = namei(&nd)) | |
66955caf | 828 | goto out; |
dd4c01c2 KM |
829 | if (nd.ni_vp) { |
830 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); | |
831 | if (nd.ni_dvp == nd.ni_vp) | |
832 | vrele(nd.ni_dvp); | |
6c44e83b | 833 | else |
dd4c01c2 KM |
834 | vput(nd.ni_dvp); |
835 | vrele(nd.ni_vp); | |
fc2aed1e KM |
836 | error = EEXIST; |
837 | goto out; | |
3e78e260 | 838 | } |
3ee1461b | 839 | VATTR_NULL(&vattr); |
5e00df3b | 840 | vattr.va_mode = 0777 &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
841 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
842 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, target); | |
fc2aed1e | 843 | out: |
fc2aed1e | 844 | FREE(target, M_NAMEI); |
a5368812 | 845 | CHECKREFS("symlink"); |
8429d022 | 846 | return (error); |
3e78e260 BJ |
847 | } |
848 | ||
849 | /* | |
d4ed1dcd | 850 | * Delete a name from the filesystem. |
3e78e260 | 851 | */ |
9e97623a CT |
852 | struct unlink_args { |
853 | char *name; | |
854 | }; | |
6a6a1e5f KM |
855 | /* ARGSUSED */ |
856 | unlink(p, uap, retval) | |
5e00df3b | 857 | struct proc *p; |
9e97623a | 858 | struct unlink_args *uap; |
6a6a1e5f KM |
859 | int *retval; |
860 | { | |
fc2aed1e KM |
861 | register struct vnode *vp; |
862 | int error; | |
8429d022 | 863 | struct nameidata nd; |
3e78e260 | 864 | |
a5368812 | 865 | CHECKPOINTREF; |
dd4c01c2 KM |
866 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
867 | if (error = namei(&nd)) | |
8429d022 | 868 | return (error); |
dd4c01c2 | 869 | vp = nd.ni_vp; |
fc2aed1e | 870 | if (vp->v_type == VDIR && |
8429d022 | 871 | (error = suser(p->p_ucred, &p->p_acflag))) |
3e78e260 BJ |
872 | goto out; |
873 | /* | |
d4ed1dcd | 874 | * The root of a mounted filesystem cannot be deleted. |
3e78e260 | 875 | */ |
fc2aed1e KM |
876 | if (vp->v_flag & VROOT) { |
877 | error = EBUSY; | |
3e78e260 BJ |
878 | goto out; |
879 | } | |
9db58063 | 880 | (void) vnode_pager_uncache(vp); |
3e78e260 | 881 | out: |
66955caf | 882 | if (!error) { |
dd4c01c2 | 883 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 884 | LEASE_CHECK(vp, 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 | ||
8932276d | 905 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
3e78e260 | 906 | /* |
d4ed1dcd | 907 | * Seek system call. |
3e78e260 | 908 | */ |
9e97623a CT |
909 | struct lseek_args { |
910 | int fdes; | |
911 | long off; | |
912 | int sbase; | |
913 | }; | |
6a6a1e5f | 914 | lseek(p, uap, retval) |
be320a2b | 915 | struct proc *p; |
9e97623a CT |
916 | register struct lseek_args *uap; |
917 | int *retval; | |
be320a2b | 918 | { |
9e97623a | 919 | struct __lseek_args nuap; |
2f2b3b3d | 920 | off_t qret; |
be320a2b KM |
921 | int error; |
922 | ||
923 | nuap.fdes = uap->fdes; | |
924 | nuap.off = uap->off; | |
925 | nuap.sbase = uap->sbase; | |
ae9b6dc3 | 926 | error = __lseek(p, &nuap, &qret); |
9e97623a | 927 | *(long *)retval = qret; |
be320a2b KM |
928 | return (error); |
929 | } | |
8932276d | 930 | #endif /* COMPAT_43 || COMPAT_SUNOS */ |
be320a2b KM |
931 | |
932 | /* | |
933 | * Seek system call. | |
934 | */ | |
ae9b6dc3 | 935 | __lseek(p, uap, retval) |
5e00df3b | 936 | struct proc *p; |
9e97623a CT |
937 | register struct __lseek_args *uap; |
938 | int *retval; | |
6a6a1e5f | 939 | { |
8429d022 | 940 | struct ucred *cred = p->p_ucred; |
5e00df3b | 941 | register struct filedesc *fdp = p->p_fd; |
6a6a1e5f | 942 | register struct file *fp; |
fc2aed1e KM |
943 | struct vattr vattr; |
944 | int error; | |
945 | ||
8429d022 | 946 | if ((unsigned)uap->fdes >= fdp->fd_nfiles || |
78eeb014 | 947 | (fp = fdp->fd_ofiles[uap->fdes]) == NULL) |
8429d022 | 948 | return (EBADF); |
fc2aed1e | 949 | if (fp->f_type != DTYPE_VNODE) |
8429d022 | 950 | return (ESPIPE); |
b4d1aee9 SL |
951 | switch (uap->sbase) { |
952 | ||
953 | case L_INCR: | |
954 | fp->f_offset += uap->off; | |
955 | break; | |
956 | ||
957 | case L_XTND: | |
fc2aed1e | 958 | if (error = VOP_GETATTR((struct vnode *)fp->f_data, |
2c69fe14 | 959 | &vattr, cred, p)) |
8429d022 | 960 | return (error); |
fc2aed1e | 961 | fp->f_offset = uap->off + vattr.va_size; |
b4d1aee9 SL |
962 | break; |
963 | ||
964 | case L_SET: | |
965 | fp->f_offset = uap->off; | |
966 | break; | |
967 | ||
968 | default: | |
8429d022 | 969 | return (EINVAL); |
b4d1aee9 | 970 | } |
9e97623a | 971 | *(off_t *)retval = fp->f_offset; |
8429d022 | 972 | return (0); |
3e78e260 BJ |
973 | } |
974 | ||
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 KM |
1157 | struct stat sb; |
1158 | int error; | |
8429d022 | 1159 | struct nameidata nd; |
5485e062 | 1160 | |
dd4c01c2 KM |
1161 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1162 | if (error = namei(&nd)) | |
8429d022 | 1163 | return (error); |
dd4c01c2 KM |
1164 | error = vn_stat(nd.ni_vp, &sb, p); |
1165 | vput(nd.ni_vp); | |
fc2aed1e | 1166 | if (error) |
8429d022 | 1167 | return (error); |
fc2aed1e | 1168 | error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); |
8429d022 | 1169 | return (error); |
d67a03eb BJ |
1170 | } |
1171 | ||
1172 | /* | |
d4ed1dcd | 1173 | * Return target name of a symbolic link. |
5485e062 | 1174 | */ |
9e97623a CT |
1175 | struct readlink_args { |
1176 | char *name; | |
1177 | char *buf; | |
1178 | int count; | |
1179 | }; | |
6a6a1e5f KM |
1180 | /* ARGSUSED */ |
1181 | readlink(p, uap, retval) | |
5e00df3b | 1182 | struct proc *p; |
9e97623a | 1183 | register struct readlink_args *uap; |
6a6a1e5f KM |
1184 | int *retval; |
1185 | { | |
fc2aed1e KM |
1186 | register struct vnode *vp; |
1187 | struct iovec aiov; | |
1188 | struct uio auio; | |
1189 | int error; | |
8429d022 | 1190 | struct nameidata nd; |
5485e062 | 1191 | |
a5368812 | 1192 | CHECKPOINTREF; |
dd4c01c2 KM |
1193 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1194 | if (error = namei(&nd)) | |
8429d022 | 1195 | return (error); |
dd4c01c2 | 1196 | vp = nd.ni_vp; |
fc2aed1e KM |
1197 | if (vp->v_type != VLNK) { |
1198 | error = EINVAL; | |
5485e062 BJ |
1199 | goto out; |
1200 | } | |
fc2aed1e KM |
1201 | aiov.iov_base = uap->buf; |
1202 | aiov.iov_len = uap->count; | |
1203 | auio.uio_iov = &aiov; | |
1204 | auio.uio_iovcnt = 1; | |
1205 | auio.uio_offset = 0; | |
1206 | auio.uio_rw = UIO_READ; | |
1207 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1208 | auio.uio_procp = p; |
fc2aed1e | 1209 | auio.uio_resid = uap->count; |
8429d022 | 1210 | error = VOP_READLINK(vp, &auio, p->p_ucred); |
5485e062 | 1211 | out: |
fc2aed1e | 1212 | vput(vp); |
6a6a1e5f | 1213 | *retval = uap->count - auio.uio_resid; |
a5368812 | 1214 | CHECKREFS("readlink"); |
8429d022 | 1215 | return (error); |
5485e062 BJ |
1216 | } |
1217 | ||
6995a2cb KM |
1218 | /* |
1219 | * Change flags of a file given path name. | |
1220 | */ | |
9e97623a CT |
1221 | struct chflags_args { |
1222 | char *fname; | |
1223 | int flags; | |
1224 | }; | |
6a6a1e5f KM |
1225 | /* ARGSUSED */ |
1226 | chflags(p, uap, retval) | |
5e00df3b | 1227 | struct proc *p; |
9e97623a | 1228 | register struct chflags_args *uap; |
6a6a1e5f KM |
1229 | int *retval; |
1230 | { | |
6995a2cb KM |
1231 | register struct vnode *vp; |
1232 | struct vattr vattr; | |
1233 | int error; | |
8429d022 | 1234 | struct nameidata nd; |
6995a2cb | 1235 | |
dd4c01c2 KM |
1236 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1237 | if (error = namei(&nd)) | |
8429d022 | 1238 | return (error); |
dd4c01c2 | 1239 | vp = nd.ni_vp; |
54fb9dc2 | 1240 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1241 | error = EROFS; |
1242 | goto out; | |
1243 | } | |
3658f091 KB |
1244 | VATTR_NULL(&vattr); |
1245 | vattr.va_flags = uap->flags; | |
e62d4143 | 1246 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1247 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1248 | out: |
1249 | vput(vp); | |
8429d022 | 1250 | return (error); |
6995a2cb KM |
1251 | } |
1252 | ||
1253 | /* | |
1254 | * Change flags of a file given a file descriptor. | |
1255 | */ | |
9e97623a CT |
1256 | struct fchflags_args { |
1257 | int fd; | |
1258 | int flags; | |
1259 | }; | |
6a6a1e5f KM |
1260 | /* ARGSUSED */ |
1261 | fchflags(p, uap, retval) | |
5e00df3b | 1262 | struct proc *p; |
9e97623a | 1263 | register struct fchflags_args *uap; |
6a6a1e5f KM |
1264 | int *retval; |
1265 | { | |
6995a2cb KM |
1266 | struct vattr vattr; |
1267 | struct vnode *vp; | |
1268 | struct file *fp; | |
1269 | int error; | |
1270 | ||
5e00df3b | 1271 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1272 | return (error); |
6995a2cb KM |
1273 | vp = (struct vnode *)fp->f_data; |
1274 | VOP_LOCK(vp); | |
54fb9dc2 | 1275 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
6995a2cb KM |
1276 | error = EROFS; |
1277 | goto out; | |
1278 | } | |
3658f091 KB |
1279 | VATTR_NULL(&vattr); |
1280 | vattr.va_flags = uap->flags; | |
e62d4143 | 1281 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1282 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
6995a2cb KM |
1283 | out: |
1284 | VOP_UNLOCK(vp); | |
8429d022 | 1285 | return (error); |
6995a2cb KM |
1286 | } |
1287 | ||
4f083fd7 SL |
1288 | /* |
1289 | * Change mode of a file given path name. | |
1290 | */ | |
9e97623a CT |
1291 | struct chmod_args { |
1292 | char *fname; | |
1293 | int fmode; | |
1294 | }; | |
6a6a1e5f KM |
1295 | /* ARGSUSED */ |
1296 | chmod(p, uap, retval) | |
5e00df3b | 1297 | struct proc *p; |
9e97623a | 1298 | register struct chmod_args *uap; |
6a6a1e5f KM |
1299 | int *retval; |
1300 | { | |
fc2aed1e KM |
1301 | register struct vnode *vp; |
1302 | struct vattr vattr; | |
1303 | int error; | |
8429d022 | 1304 | struct nameidata nd; |
5485e062 | 1305 | |
dd4c01c2 KM |
1306 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1307 | if (error = namei(&nd)) | |
8429d022 | 1308 | return (error); |
dd4c01c2 | 1309 | vp = nd.ni_vp; |
54fb9dc2 | 1310 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1311 | error = EROFS; |
1312 | goto out; | |
1313 | } | |
3658f091 KB |
1314 | VATTR_NULL(&vattr); |
1315 | vattr.va_mode = uap->fmode & 07777; | |
e62d4143 | 1316 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1317 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1318 | out: |
1319 | vput(vp); | |
8429d022 | 1320 | return (error); |
528f664c | 1321 | } |
f94ceb3b | 1322 | |
4f083fd7 SL |
1323 | /* |
1324 | * Change mode of a file given a file descriptor. | |
1325 | */ | |
9e97623a CT |
1326 | struct fchmod_args { |
1327 | int fd; | |
1328 | int fmode; | |
1329 | }; | |
6a6a1e5f KM |
1330 | /* ARGSUSED */ |
1331 | fchmod(p, uap, retval) | |
5e00df3b | 1332 | struct proc *p; |
9e97623a | 1333 | register struct fchmod_args *uap; |
6a6a1e5f KM |
1334 | int *retval; |
1335 | { | |
fc2aed1e KM |
1336 | struct vattr vattr; |
1337 | struct vnode *vp; | |
1338 | struct file *fp; | |
1339 | int error; | |
1340 | ||
5e00df3b | 1341 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1342 | return (error); |
fc2aed1e KM |
1343 | vp = (struct vnode *)fp->f_data; |
1344 | VOP_LOCK(vp); | |
54fb9dc2 | 1345 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1346 | error = EROFS; |
1347 | goto out; | |
f94ceb3b | 1348 | } |
3658f091 KB |
1349 | VATTR_NULL(&vattr); |
1350 | vattr.va_mode = uap->fmode & 07777; | |
e62d4143 | 1351 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1352 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1353 | out: |
1354 | VOP_UNLOCK(vp); | |
8429d022 | 1355 | return (error); |
5485e062 BJ |
1356 | } |
1357 | ||
4f083fd7 SL |
1358 | /* |
1359 | * Set ownership given a path name. | |
1360 | */ | |
9e97623a CT |
1361 | struct chown_args { |
1362 | char *fname; | |
1363 | int uid; | |
1364 | int gid; | |
1365 | }; | |
6a6a1e5f KM |
1366 | /* ARGSUSED */ |
1367 | chown(p, uap, retval) | |
5e00df3b | 1368 | struct proc *p; |
9e97623a | 1369 | register struct chown_args *uap; |
6a6a1e5f KM |
1370 | int *retval; |
1371 | { | |
fc2aed1e KM |
1372 | register struct vnode *vp; |
1373 | struct vattr vattr; | |
1374 | int error; | |
8429d022 | 1375 | struct nameidata nd; |
d67a03eb | 1376 | |
dd4c01c2 KM |
1377 | NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1378 | if (error = namei(&nd)) | |
8429d022 | 1379 | return (error); |
dd4c01c2 | 1380 | vp = nd.ni_vp; |
54fb9dc2 | 1381 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1382 | error = EROFS; |
1383 | goto out; | |
1384 | } | |
3658f091 KB |
1385 | VATTR_NULL(&vattr); |
1386 | vattr.va_uid = uap->uid; | |
1387 | vattr.va_gid = uap->gid; | |
e62d4143 | 1388 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1389 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1390 | out: |
1391 | vput(vp); | |
8429d022 | 1392 | return (error); |
528f664c | 1393 | } |
f94ceb3b | 1394 | |
4f083fd7 SL |
1395 | /* |
1396 | * Set ownership given a file descriptor. | |
1397 | */ | |
9e97623a CT |
1398 | struct fchown_args { |
1399 | int fd; | |
1400 | int uid; | |
1401 | int gid; | |
1402 | }; | |
6a6a1e5f KM |
1403 | /* ARGSUSED */ |
1404 | fchown(p, uap, retval) | |
5e00df3b | 1405 | struct proc *p; |
9e97623a | 1406 | register struct fchown_args *uap; |
6a6a1e5f KM |
1407 | int *retval; |
1408 | { | |
fc2aed1e KM |
1409 | struct vattr vattr; |
1410 | struct vnode *vp; | |
1411 | struct file *fp; | |
1412 | int error; | |
1413 | ||
5e00df3b | 1414 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1415 | return (error); |
fc2aed1e KM |
1416 | vp = (struct vnode *)fp->f_data; |
1417 | VOP_LOCK(vp); | |
54fb9dc2 | 1418 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1419 | error = EROFS; |
1420 | goto out; | |
1421 | } | |
3658f091 KB |
1422 | VATTR_NULL(&vattr); |
1423 | vattr.va_uid = uap->uid; | |
1424 | vattr.va_gid = uap->gid; | |
e62d4143 | 1425 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1426 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1427 | out: |
1428 | VOP_UNLOCK(vp); | |
8429d022 | 1429 | return (error); |
d67a03eb BJ |
1430 | } |
1431 | ||
6a6a1e5f KM |
1432 | /* |
1433 | * Set the access and modification times of a file. | |
1434 | */ | |
9e97623a CT |
1435 | struct utimes_args { |
1436 | char *fname; | |
1437 | struct timeval *tptr; | |
1438 | }; | |
6a6a1e5f KM |
1439 | /* ARGSUSED */ |
1440 | utimes(p, uap, retval) | |
5e00df3b | 1441 | struct proc *p; |
9e97623a | 1442 | register struct utimes_args *uap; |
6a6a1e5f KM |
1443 | int *retval; |
1444 | { | |
fc2aed1e | 1445 | register struct vnode *vp; |
bb1b75f4 | 1446 | struct timeval tv[2]; |
fc2aed1e KM |
1447 | struct vattr vattr; |
1448 | int error; | |
8429d022 | 1449 | struct nameidata nd; |
bb1b75f4 | 1450 | |
fc2aed1e | 1451 | if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) |
8429d022 | 1452 | return (error); |
dd4c01c2 KM |
1453 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1454 | if (error = namei(&nd)) | |
8429d022 | 1455 | return (error); |
dd4c01c2 | 1456 | vp = nd.ni_vp; |
54fb9dc2 | 1457 | if (vp->v_mount->mnt_flag & MNT_RDONLY) { |
fc2aed1e KM |
1458 | error = EROFS; |
1459 | goto out; | |
bb1b75f4 | 1460 | } |
3658f091 | 1461 | VATTR_NULL(&vattr); |
7e11a0c9 KM |
1462 | vattr.va_atime.ts_sec = tv[0].tv_sec; |
1463 | vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; | |
1464 | vattr.va_mtime.ts_sec = tv[1].tv_sec; | |
1465 | vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; | |
e62d4143 | 1466 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1467 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1468 | out: |
1469 | vput(vp); | |
8429d022 | 1470 | return (error); |
d67a03eb | 1471 | } |
64d3a787 | 1472 | |
9e97623a | 1473 | struct __truncate_args { |
2f2b3b3d CT |
1474 | char *fname; |
1475 | int pad; | |
1476 | off_t length; | |
1477 | }; | |
be320a2b KM |
1478 | |
1479 | /* | |
1480 | * Truncate a file given its path name. | |
1481 | */ | |
1482 | /* ARGSUSED */ | |
ae9b6dc3 | 1483 | __truncate(p, uap, retval) |
5e00df3b | 1484 | struct proc *p; |
9e97623a | 1485 | register struct __truncate_args *uap; |
6a6a1e5f KM |
1486 | int *retval; |
1487 | { | |
fc2aed1e KM |
1488 | register struct vnode *vp; |
1489 | struct vattr vattr; | |
1490 | int error; | |
8429d022 | 1491 | struct nameidata nd; |
528f664c | 1492 | |
dd4c01c2 KM |
1493 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); |
1494 | if (error = namei(&nd)) | |
8429d022 | 1495 | return (error); |
dd4c01c2 | 1496 | vp = nd.ni_vp; |
fc2aed1e KM |
1497 | if (vp->v_type == VDIR) { |
1498 | error = EISDIR; | |
1499 | goto out; | |
528f664c | 1500 | } |
d7b2a16c | 1501 | if ((error = vn_writechk(vp)) || |
2c69fe14 | 1502 | (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p))) |
fc2aed1e | 1503 | goto out; |
3658f091 KB |
1504 | VATTR_NULL(&vattr); |
1505 | vattr.va_size = uap->length; | |
e62d4143 | 1506 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1507 | error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); |
fc2aed1e KM |
1508 | out: |
1509 | vput(vp); | |
8429d022 | 1510 | return (error); |
528f664c SL |
1511 | } |
1512 | ||
9e97623a | 1513 | struct __ftruncate_args { |
2f2b3b3d CT |
1514 | int fd; |
1515 | int pad; | |
1516 | off_t length; | |
1517 | }; | |
1518 | ||
4f083fd7 SL |
1519 | /* |
1520 | * Truncate a file given a file descriptor. | |
1521 | */ | |
6a6a1e5f | 1522 | /* ARGSUSED */ |
ae9b6dc3 | 1523 | __ftruncate(p, uap, retval) |
5e00df3b | 1524 | struct proc *p; |
9e97623a | 1525 | register struct __ftruncate_args *uap; |
6a6a1e5f KM |
1526 | int *retval; |
1527 | { | |
fc2aed1e KM |
1528 | struct vattr vattr; |
1529 | struct vnode *vp; | |
528f664c | 1530 | struct file *fp; |
fc2aed1e KM |
1531 | int error; |
1532 | ||
5e00df3b | 1533 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1534 | return (error); |
fc2aed1e | 1535 | if ((fp->f_flag & FWRITE) == 0) |
8429d022 | 1536 | return (EINVAL); |
fc2aed1e KM |
1537 | vp = (struct vnode *)fp->f_data; |
1538 | VOP_LOCK(vp); | |
1539 | if (vp->v_type == VDIR) { | |
1540 | error = EISDIR; | |
1541 | goto out; | |
528f664c | 1542 | } |
d7b2a16c | 1543 | if (error = vn_writechk(vp)) |
fc2aed1e | 1544 | goto out; |
3658f091 KB |
1545 | VATTR_NULL(&vattr); |
1546 | vattr.va_size = uap->length; | |
e62d4143 | 1547 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
2c69fe14 | 1548 | error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); |
fc2aed1e KM |
1549 | out: |
1550 | VOP_UNLOCK(vp); | |
8429d022 | 1551 | return (error); |
4f083fd7 SL |
1552 | } |
1553 | ||
2f2b3b3d CT |
1554 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
1555 | /* | |
1556 | * Truncate a file given its path name. | |
1557 | */ | |
9e97623a CT |
1558 | struct truncate_args { |
1559 | char *fname; | |
1560 | long length; | |
1561 | }; | |
2f2b3b3d CT |
1562 | /* ARGSUSED */ |
1563 | truncate(p, uap, retval) | |
1564 | struct proc *p; | |
9e97623a | 1565 | register struct truncate_args *uap; |
2f2b3b3d CT |
1566 | int *retval; |
1567 | { | |
9e97623a | 1568 | struct __truncate_args nuap; |
2f2b3b3d CT |
1569 | |
1570 | nuap.fname = uap->fname; | |
1571 | nuap.length = uap->length; | |
1572 | return (__truncate(p, &nuap, retval)); | |
1573 | } | |
1574 | ||
1575 | /* | |
1576 | * Truncate a file given a file descriptor. | |
1577 | */ | |
9e97623a CT |
1578 | struct ftruncate_args { |
1579 | int fd; | |
1580 | long length; | |
1581 | }; | |
2f2b3b3d CT |
1582 | /* ARGSUSED */ |
1583 | ftruncate(p, uap, retval) | |
1584 | struct proc *p; | |
9e97623a | 1585 | register struct ftruncate_args *uap; |
2f2b3b3d CT |
1586 | int *retval; |
1587 | { | |
d80c3f56 | 1588 | struct __ftruncate_args nuap; |
2f2b3b3d CT |
1589 | |
1590 | nuap.fd = uap->fd; | |
1591 | nuap.length = uap->length; | |
1592 | return (__ftruncate(p, &nuap, retval)); | |
1593 | } | |
1594 | #endif /* COMPAT_43 || COMPAT_SUNOS */ | |
1595 | ||
4f083fd7 SL |
1596 | /* |
1597 | * Synch an open file. | |
1598 | */ | |
9e97623a CT |
1599 | struct fsync_args { |
1600 | int fd; | |
1601 | }; | |
6a6a1e5f KM |
1602 | /* ARGSUSED */ |
1603 | fsync(p, uap, retval) | |
5e00df3b | 1604 | struct proc *p; |
9e97623a | 1605 | struct fsync_args *uap; |
6a6a1e5f KM |
1606 | int *retval; |
1607 | { | |
e79467ea | 1608 | register struct vnode *vp; |
4f083fd7 | 1609 | struct file *fp; |
fc2aed1e | 1610 | int error; |
4f083fd7 | 1611 | |
5e00df3b | 1612 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1613 | return (error); |
e79467ea KM |
1614 | vp = (struct vnode *)fp->f_data; |
1615 | VOP_LOCK(vp); | |
09d2ef1a | 1616 | error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); |
e79467ea | 1617 | VOP_UNLOCK(vp); |
8429d022 | 1618 | return (error); |
528f664c SL |
1619 | } |
1620 | ||
4f083fd7 SL |
1621 | /* |
1622 | * Rename system call. | |
4f083fd7 SL |
1623 | * |
1624 | * Source and destination must either both be directories, or both | |
1625 | * not be directories. If target is a directory, it must be empty. | |
1626 | */ | |
9e97623a CT |
1627 | struct rename_args { |
1628 | char *from; | |
1629 | char *to; | |
1630 | }; | |
6a6a1e5f KM |
1631 | /* ARGSUSED */ |
1632 | rename(p, uap, retval) | |
5e00df3b | 1633 | struct proc *p; |
9e97623a | 1634 | register struct rename_args *uap; |
6a6a1e5f KM |
1635 | int *retval; |
1636 | { | |
fc2aed1e | 1637 | register struct vnode *tvp, *fvp, *tdvp; |
5718fad3 | 1638 | struct nameidata fromnd, tond; |
fc2aed1e | 1639 | int error; |
4f083fd7 | 1640 | |
a5368812 | 1641 | CHECKPOINTREF; |
dd4c01c2 KM |
1642 | NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, |
1643 | uap->from, p); | |
1644 | if (error = namei(&fromnd)) | |
8429d022 | 1645 | return (error); |
5718fad3 | 1646 | fvp = fromnd.ni_vp; |
dd4c01c2 KM |
1647 | NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, |
1648 | UIO_USERSPACE, uap->to, p); | |
1649 | if (error = namei(&tond)) { | |
cfef4373 | 1650 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1651 | vrele(fromnd.ni_dvp); |
66955caf KM |
1652 | vrele(fvp); |
1653 | goto out1; | |
1654 | } | |
fc2aed1e KM |
1655 | tdvp = tond.ni_dvp; |
1656 | tvp = tond.ni_vp; | |
1657 | if (tvp != NULL) { | |
1658 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
9259ee95 | 1659 | error = ENOTDIR; |
fc2aed1e KM |
1660 | goto out; |
1661 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
9259ee95 | 1662 | error = EISDIR; |
fc2aed1e | 1663 | goto out; |
a5390dce | 1664 | } |
64d3a787 | 1665 | } |
fe562f32 | 1666 | if (fvp == tdvp) |
fc2aed1e | 1667 | error = EINVAL; |
fe562f32 | 1668 | /* |
5718fad3 KM |
1669 | * If source is the same as the destination (that is the |
1670 | * same inode number with the same name in the same directory), | |
fe562f32 KM |
1671 | * then there is nothing to do. |
1672 | */ | |
5718fad3 | 1673 | if (fvp == tvp && fromnd.ni_dvp == tdvp && |
dd4c01c2 KM |
1674 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
1675 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
1676 | fromnd.ni_cnd.cn_namelen)) | |
fe562f32 | 1677 | error = -1; |
fc2aed1e | 1678 | out: |
66955caf | 1679 | if (!error) { |
e62d4143 KM |
1680 | LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); |
1681 | if (fromnd.ni_dvp != tdvp) | |
1682 | LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); | |
1683 | if (tvp) | |
1684 | LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); | |
cfef4373 JH |
1685 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
1686 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 1687 | } else { |
cfef4373 | 1688 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
6c44e83b KM |
1689 | if (tdvp == tvp) |
1690 | vrele(tdvp); | |
1691 | else | |
1692 | vput(tdvp); | |
66955caf KM |
1693 | if (tvp) |
1694 | vput(tvp); | |
cfef4373 | 1695 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
5718fad3 | 1696 | vrele(fromnd.ni_dvp); |
66955caf | 1697 | vrele(fvp); |
64d3a787 | 1698 | } |
c03959f9 | 1699 | p->p_spare[1]--; |
5718fad3 | 1700 | vrele(tond.ni_startdir); |
dd4c01c2 | 1701 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
fc2aed1e | 1702 | out1: |
c03959f9 | 1703 | p->p_spare[1]--; |
5718fad3 | 1704 | vrele(fromnd.ni_startdir); |
dd4c01c2 | 1705 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
a5368812 | 1706 | CHECKREFS("rename"); |
fe562f32 | 1707 | if (error == -1) |
8429d022 MK |
1708 | return (0); |
1709 | return (error); | |
64d3a787 | 1710 | } |
88a7a62a | 1711 | |
88a7a62a | 1712 | /* |
d4ed1dcd | 1713 | * Mkdir system call. |
88a7a62a | 1714 | */ |
9e97623a CT |
1715 | struct mkdir_args { |
1716 | char *name; | |
1717 | int dmode; | |
1718 | }; | |
6a6a1e5f KM |
1719 | /* ARGSUSED */ |
1720 | mkdir(p, uap, retval) | |
5e00df3b | 1721 | struct proc *p; |
9e97623a | 1722 | register struct mkdir_args *uap; |
6a6a1e5f KM |
1723 | int *retval; |
1724 | { | |
fc2aed1e KM |
1725 | register struct vnode *vp; |
1726 | struct vattr vattr; | |
1727 | int error; | |
8429d022 | 1728 | struct nameidata nd; |
88a7a62a | 1729 | |
a5368812 | 1730 | CHECKPOINTREF; |
dd4c01c2 KM |
1731 | NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->name, p); |
1732 | if (error = namei(&nd)) | |
8429d022 | 1733 | return (error); |
dd4c01c2 | 1734 | vp = nd.ni_vp; |
fc2aed1e | 1735 | if (vp != NULL) { |
dd4c01c2 KM |
1736 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1737 | if (nd.ni_dvp == vp) | |
1738 | vrele(nd.ni_dvp); | |
6c44e83b | 1739 | else |
dd4c01c2 | 1740 | vput(nd.ni_dvp); |
66955caf | 1741 | vrele(vp); |
a5368812 | 1742 | CHECKREFS("mkdir1"); |
8429d022 | 1743 | return (EEXIST); |
88a7a62a | 1744 | } |
3ee1461b | 1745 | VATTR_NULL(&vattr); |
fc2aed1e | 1746 | vattr.va_type = VDIR; |
5e00df3b | 1747 | vattr.va_mode = (uap->dmode & 0777) &~ p->p_fd->fd_cmask; |
dd4c01c2 KM |
1748 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
1749 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |
5dfd04f0 | 1750 | if (!error) |
dd4c01c2 | 1751 | vput(nd.ni_vp); |
a5368812 | 1752 | CHECKREFS("mkdir2"); |
8429d022 | 1753 | return (error); |
88a7a62a SL |
1754 | } |
1755 | ||
1756 | /* | |
1757 | * Rmdir system call. | |
1758 | */ | |
9e97623a CT |
1759 | struct rmdir_args { |
1760 | char *name; | |
1761 | }; | |
6a6a1e5f KM |
1762 | /* ARGSUSED */ |
1763 | rmdir(p, uap, retval) | |
5e00df3b | 1764 | struct proc *p; |
9e97623a | 1765 | struct rmdir_args *uap; |
6a6a1e5f KM |
1766 | int *retval; |
1767 | { | |
fc2aed1e KM |
1768 | register struct vnode *vp; |
1769 | int error; | |
8429d022 | 1770 | struct nameidata nd; |
88a7a62a | 1771 | |
a5368812 | 1772 | CHECKPOINTREF; |
dd4c01c2 KM |
1773 | NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->name, p); |
1774 | if (error = namei(&nd)) | |
8429d022 | 1775 | return (error); |
dd4c01c2 | 1776 | vp = nd.ni_vp; |
fc2aed1e KM |
1777 | if (vp->v_type != VDIR) { |
1778 | error = ENOTDIR; | |
88a7a62a SL |
1779 | goto out; |
1780 | } | |
1781 | /* | |
fc2aed1e | 1782 | * No rmdir "." please. |
88a7a62a | 1783 | */ |
dd4c01c2 | 1784 | if (nd.ni_dvp == vp) { |
fc2aed1e | 1785 | error = EINVAL; |
88a7a62a SL |
1786 | goto out; |
1787 | } | |
1788 | /* | |
d4ed1dcd | 1789 | * The root of a mounted filesystem cannot be deleted. |
88a7a62a | 1790 | */ |
fc2aed1e KM |
1791 | if (vp->v_flag & VROOT) |
1792 | error = EBUSY; | |
88a7a62a | 1793 | out: |
66955caf | 1794 | if (!error) { |
dd4c01c2 | 1795 | LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); |
e62d4143 | 1796 | LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); |
dd4c01c2 | 1797 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1798 | } else { |
dd4c01c2 KM |
1799 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
1800 | if (nd.ni_dvp == vp) | |
1801 | vrele(nd.ni_dvp); | |
6c44e83b | 1802 | else |
dd4c01c2 | 1803 | vput(nd.ni_dvp); |
66955caf KM |
1804 | vput(vp); |
1805 | } | |
a5368812 | 1806 | CHECKREFS("rmdir"); |
8429d022 | 1807 | return (error); |
88a7a62a SL |
1808 | } |
1809 | ||
3d92fa10 KM |
1810 | #ifdef COMPAT_43 |
1811 | /* | |
1812 | * Read a block of directory entries in a file system independent format. | |
1813 | */ | |
9e97623a CT |
1814 | struct ogetdirentries_args { |
1815 | int fd; | |
1816 | char *buf; | |
1817 | unsigned count; | |
1818 | long *basep; | |
1819 | }; | |
3d92fa10 KM |
1820 | ogetdirentries(p, uap, retval) |
1821 | struct proc *p; | |
9e97623a | 1822 | register struct ogetdirentries_args *uap; |
3d92fa10 KM |
1823 | int *retval; |
1824 | { | |
3d92fa10 KM |
1825 | register struct vnode *vp; |
1826 | struct file *fp; | |
1827 | struct uio auio, kuio; | |
1828 | struct iovec aiov, kiov; | |
1829 | struct dirent *dp, *edp; | |
1830 | caddr_t dirbuf; | |
1831 | int error, readcnt; | |
d80c3f56 | 1832 | long loff; |
3d92fa10 KM |
1833 | |
1834 | if (error = getvnode(p->p_fd, uap->fd, &fp)) | |
1835 | return (error); | |
1836 | if ((fp->f_flag & FREAD) == 0) | |
1837 | return (EBADF); | |
1838 | vp = (struct vnode *)fp->f_data; | |
1839 | if (vp->v_type != VDIR) | |
1840 | return (EINVAL); | |
1841 | aiov.iov_base = uap->buf; | |
1842 | aiov.iov_len = uap->count; | |
1843 | auio.uio_iov = &aiov; | |
1844 | auio.uio_iovcnt = 1; | |
1845 | auio.uio_rw = UIO_READ; | |
1846 | auio.uio_segflg = UIO_USERSPACE; | |
1847 | auio.uio_procp = p; | |
1848 | auio.uio_resid = uap->count; | |
1849 | VOP_LOCK(vp); | |
d80c3f56 | 1850 | loff = auio.uio_offset = fp->f_offset; |
3d92fa10 | 1851 | # if (BYTE_ORDER != LITTLE_ENDIAN) |
a801b5ab | 1852 | if (vp->v_mount->mnt_maxsymlinklen <= 0) { |
3d92fa10 | 1853 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
a801b5ab KM |
1854 | fp->f_offset = auio.uio_offset; |
1855 | } else | |
3d92fa10 KM |
1856 | # endif |
1857 | { | |
1858 | kuio = auio; | |
1859 | kuio.uio_iov = &kiov; | |
1860 | kuio.uio_segflg = UIO_SYSSPACE; | |
1861 | kiov.iov_len = uap->count; | |
1862 | MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); | |
1863 | kiov.iov_base = dirbuf; | |
1864 | error = VOP_READDIR(vp, &kuio, fp->f_cred); | |
a801b5ab | 1865 | fp->f_offset = kuio.uio_offset; |
3d92fa10 KM |
1866 | if (error == 0) { |
1867 | readcnt = uap->count - kuio.uio_resid; | |
1868 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1869 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
3d92fa10 | 1870 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
d80c3f56 | 1871 | /* |
30445fe6 KM |
1872 | * The expected low byte of |
1873 | * dp->d_namlen is our dp->d_type. | |
1874 | * The high MBZ byte of dp->d_namlen | |
1875 | * is our dp->d_namlen. | |
d80c3f56 | 1876 | */ |
30445fe6 KM |
1877 | dp->d_type = dp->d_namlen; |
1878 | dp->d_namlen = 0; | |
1879 | # else | |
1880 | /* | |
1881 | * The dp->d_type is the high byte | |
1882 | * of the expected dp->d_namlen, | |
1883 | * so must be zero'ed. | |
1884 | */ | |
1885 | dp->d_type = 0; | |
3d92fa10 KM |
1886 | # endif |
1887 | if (dp->d_reclen > 0) { | |
1888 | dp = (struct dirent *) | |
1889 | ((char *)dp + dp->d_reclen); | |
1890 | } else { | |
1891 | error = EIO; | |
1892 | break; | |
1893 | } | |
1894 | } | |
1895 | if (dp >= edp) | |
1896 | error = uiomove(dirbuf, readcnt, &auio); | |
1897 | } | |
1898 | FREE(dirbuf, M_TEMP); | |
1899 | } | |
3d92fa10 KM |
1900 | VOP_UNLOCK(vp); |
1901 | if (error) | |
1902 | return (error); | |
d80c3f56 | 1903 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
3d92fa10 KM |
1904 | *retval = uap->count - auio.uio_resid; |
1905 | return (error); | |
1906 | } | |
1907 | #endif | |
1908 | ||
fc2aed1e | 1909 | /* |
d4ed1dcd | 1910 | * Read a block of directory entries in a file system independent format. |
fc2aed1e | 1911 | */ |
9e97623a CT |
1912 | struct getdirentries_args { |
1913 | int fd; | |
1914 | char *buf; | |
1915 | unsigned count; | |
1916 | long *basep; | |
1917 | }; | |
6a6a1e5f | 1918 | getdirentries(p, uap, retval) |
5e00df3b | 1919 | struct proc *p; |
9e97623a | 1920 | register struct getdirentries_args *uap; |
6a6a1e5f KM |
1921 | int *retval; |
1922 | { | |
e79467ea | 1923 | register struct vnode *vp; |
8462a185 | 1924 | struct file *fp; |
fc2aed1e KM |
1925 | struct uio auio; |
1926 | struct iovec aiov; | |
d80c3f56 | 1927 | long loff; |
09d2ef1a | 1928 | int error; |
fc2aed1e | 1929 | |
5e00df3b | 1930 | if (error = getvnode(p->p_fd, uap->fd, &fp)) |
8429d022 | 1931 | return (error); |
fc2aed1e | 1932 | if ((fp->f_flag & FREAD) == 0) |
8429d022 | 1933 | return (EBADF); |
e79467ea | 1934 | vp = (struct vnode *)fp->f_data; |
95a9cadb | 1935 | unionread: |
e79467ea | 1936 | if (vp->v_type != VDIR) |
8429d022 | 1937 | return (EINVAL); |
fc2aed1e KM |
1938 | aiov.iov_base = uap->buf; |
1939 | aiov.iov_len = uap->count; | |
1940 | auio.uio_iov = &aiov; | |
1941 | auio.uio_iovcnt = 1; | |
1942 | auio.uio_rw = UIO_READ; | |
1943 | auio.uio_segflg = UIO_USERSPACE; | |
2c69fe14 | 1944 | auio.uio_procp = p; |
fc2aed1e | 1945 | auio.uio_resid = uap->count; |
e79467ea | 1946 | VOP_LOCK(vp); |
d80c3f56 | 1947 | loff = auio.uio_offset = fp->f_offset; |
09d2ef1a | 1948 | error = VOP_READDIR(vp, &auio, fp->f_cred); |
e79467ea KM |
1949 | fp->f_offset = auio.uio_offset; |
1950 | VOP_UNLOCK(vp); | |
1951 | if (error) | |
8429d022 | 1952 | return (error); |
95a9cadb JSP |
1953 | if ((uap->count == auio.uio_resid) && |
1954 | (vp->v_flag & VROOT) && | |
1955 | (vp->v_mount->mnt_flag & MNT_UNION)) { | |
1956 | struct vnode *tvp = vp; | |
1957 | vp = vp->v_mount->mnt_vnodecovered; | |
1958 | VREF(vp); | |
1959 | fp->f_data = (caddr_t) vp; | |
1960 | fp->f_offset = 0; | |
1961 | vrele(tvp); | |
1962 | goto unionread; | |
1963 | } | |
d80c3f56 | 1964 | error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); |
6a6a1e5f | 1965 | *retval = uap->count - auio.uio_resid; |
8429d022 | 1966 | return (error); |
88a7a62a SL |
1967 | } |
1968 | ||
1969 | /* | |
d4ed1dcd | 1970 | * Set the mode mask for creation of filesystem nodes. |
88a7a62a | 1971 | */ |
9e97623a CT |
1972 | struct umask_args { |
1973 | int mask; | |
1974 | }; | |
1975 | mode_t /* XXX */ | |
6a6a1e5f | 1976 | umask(p, uap, retval) |
5e00df3b | 1977 | struct proc *p; |
9e97623a | 1978 | struct umask_args *uap; |
6a6a1e5f KM |
1979 | int *retval; |
1980 | { | |
5e00df3b | 1981 | register struct filedesc *fdp = p->p_fd; |
88a7a62a | 1982 | |
5e00df3b KM |
1983 | *retval = fdp->fd_cmask; |
1984 | fdp->fd_cmask = uap->mask & 07777; | |
8429d022 | 1985 | return (0); |
fc2aed1e KM |
1986 | } |
1987 | ||
b0a98f13 MT |
1988 | /* |
1989 | * Void all references to file by ripping underlying filesystem | |
1990 | * away from vnode. | |
1991 | */ | |
9e97623a CT |
1992 | struct revoke_args { |
1993 | char *fname; | |
1994 | }; | |
6a6a1e5f KM |
1995 | /* ARGSUSED */ |
1996 | revoke(p, uap, retval) | |
5e00df3b | 1997 | struct proc *p; |
9e97623a | 1998 | register struct revoke_args *uap; |
6a6a1e5f KM |
1999 | int *retval; |
2000 | { | |
b0a98f13 MT |
2001 | register struct vnode *vp; |
2002 | struct vattr vattr; | |
2003 | int error; | |
8429d022 | 2004 | struct nameidata nd; |
b0a98f13 | 2005 | |
dd4c01c2 KM |
2006 | NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->fname, p); |
2007 | if (error = namei(&nd)) | |
8429d022 | 2008 | return (error); |
dd4c01c2 | 2009 | vp = nd.ni_vp; |
b0a98f13 MT |
2010 | if (vp->v_type != VCHR && vp->v_type != VBLK) { |
2011 | error = EINVAL; | |
2012 | goto out; | |
2013 | } | |
2c69fe14 | 2014 | if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) |
b0a98f13 | 2015 | goto out; |
8429d022 MK |
2016 | if (p->p_ucred->cr_uid != vattr.va_uid && |
2017 | (error = suser(p->p_ucred, &p->p_acflag))) | |
b0a98f13 | 2018 | goto out; |
8b81d198 | 2019 | if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) |
c9345cca | 2020 | vgoneall(vp); |
b0a98f13 MT |
2021 | out: |
2022 | vrele(vp); | |
8429d022 | 2023 | return (error); |
b0a98f13 MT |
2024 | } |
2025 | ||
d4ed1dcd KM |
2026 | /* |
2027 | * Convert a user file descriptor to a kernel file entry. | |
2028 | */ | |
5e00df3b KM |
2029 | getvnode(fdp, fdes, fpp) |
2030 | struct filedesc *fdp; | |
fc2aed1e KM |
2031 | struct file **fpp; |
2032 | int fdes; | |
2033 | { | |
2034 | struct file *fp; | |
2035 | ||
8429d022 | 2036 | if ((unsigned)fdes >= fdp->fd_nfiles || |
78eeb014 | 2037 | (fp = fdp->fd_ofiles[fdes]) == NULL) |
fc2aed1e KM |
2038 | return (EBADF); |
2039 | if (fp->f_type != DTYPE_VNODE) | |
2040 | return (EINVAL); | |
2041 | *fpp = fp; | |
2042 | return (0); | |
88a7a62a | 2043 | } |