Commit | Line | Data |
---|---|---|
b688fc87 WJ |
1 | /* |
2 | * Copyright (c) 1982, 1986, 1989 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | * | |
33 | * @(#)ufs_vnops.c 7.64 (Berkeley) 5/16/91 | |
34 | */ | |
35 | ||
36 | #include "param.h" | |
37 | #include "systm.h" | |
38 | #include "namei.h" | |
39 | #include "resourcevar.h" | |
40 | #include "kernel.h" | |
41 | #include "file.h" | |
42 | #include "stat.h" | |
43 | #include "buf.h" | |
44 | #include "proc.h" | |
45 | #include "conf.h" | |
46 | #include "mount.h" | |
47 | #include "vnode.h" | |
48 | #include "specdev.h" | |
49 | #include "fifo.h" | |
50 | #include "malloc.h" | |
51 | ||
52 | #include "lockf.h" | |
53 | #include "quota.h" | |
54 | #include "inode.h" | |
55 | #include "dir.h" | |
56 | #include "fs.h" | |
57 | ||
58 | /* | |
59 | * Create a regular file | |
60 | */ | |
61 | ufs_create(ndp, vap, p) | |
62 | struct nameidata *ndp; | |
63 | struct vattr *vap; | |
64 | struct proc *p; | |
65 | { | |
66 | struct inode *ip; | |
67 | int error; | |
68 | ||
69 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) | |
70 | return (error); | |
71 | ndp->ni_vp = ITOV(ip); | |
72 | return (0); | |
73 | } | |
74 | ||
75 | /* | |
76 | * Mknod vnode call | |
77 | */ | |
78 | /* ARGSUSED */ | |
79 | ufs_mknod(ndp, vap, cred, p) | |
80 | struct nameidata *ndp; | |
81 | struct ucred *cred; | |
82 | struct vattr *vap; | |
83 | struct proc *p; | |
84 | { | |
85 | register struct vnode *vp; | |
86 | struct inode *ip; | |
87 | int error; | |
88 | ||
89 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) | |
90 | return (error); | |
91 | ip->i_flag |= IACC|IUPD|ICHG; | |
92 | if (vap->va_rdev != VNOVAL) { | |
93 | /* | |
94 | * Want to be able to use this to make badblock | |
95 | * inodes, so don't truncate the dev number. | |
96 | */ | |
97 | ip->i_rdev = vap->va_rdev; | |
98 | } | |
99 | /* | |
100 | * Remove inode so that it will be reloaded by iget and | |
101 | * checked to see if it is an alias of an existing entry | |
102 | * in the inode cache. | |
103 | */ | |
104 | vp = ITOV(ip); | |
105 | vput(vp); | |
106 | vp->v_type = VNON; | |
107 | vgone(vp); | |
108 | return (0); | |
109 | } | |
110 | ||
111 | /* | |
112 | * Open called. | |
113 | * | |
114 | * Nothing to do. | |
115 | */ | |
116 | /* ARGSUSED */ | |
117 | ufs_open(vp, mode, cred, p) | |
118 | struct vnode *vp; | |
119 | int mode; | |
120 | struct ucred *cred; | |
121 | struct proc *p; | |
122 | { | |
123 | ||
124 | return (0); | |
125 | } | |
126 | ||
127 | /* | |
128 | * Close called | |
129 | * | |
130 | * Update the times on the inode. | |
131 | */ | |
132 | /* ARGSUSED */ | |
133 | ufs_close(vp, fflag, cred, p) | |
134 | struct vnode *vp; | |
135 | int fflag; | |
136 | struct ucred *cred; | |
137 | struct proc *p; | |
138 | { | |
139 | register struct inode *ip = VTOI(vp); | |
140 | ||
141 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
142 | ITIMES(ip, &time, &time); | |
143 | return (0); | |
144 | } | |
145 | ||
146 | /* | |
147 | * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. | |
148 | * The mode is shifted to select the owner/group/other fields. The | |
149 | * super user is granted all permissions. | |
150 | */ | |
151 | ufs_access(vp, mode, cred, p) | |
152 | struct vnode *vp; | |
153 | register int mode; | |
154 | struct ucred *cred; | |
155 | struct proc *p; | |
156 | { | |
157 | register struct inode *ip = VTOI(vp); | |
158 | register gid_t *gp; | |
159 | int i, error; | |
160 | ||
161 | #ifdef DIAGNOSTIC | |
162 | if (!VOP_ISLOCKED(vp)) { | |
163 | vprint("ufs_access: not locked", vp); | |
164 | panic("ufs_access: not locked"); | |
165 | } | |
166 | #endif | |
167 | #ifdef QUOTA | |
168 | if (mode & VWRITE) { | |
169 | switch (vp->v_type) { | |
170 | case VREG: case VDIR: case VLNK: | |
171 | if (error = getinoquota(ip)) | |
172 | return (error); | |
173 | } | |
174 | } | |
175 | #endif /* QUOTA */ | |
176 | /* | |
177 | * If you're the super-user, you always get access. | |
178 | */ | |
179 | if (cred->cr_uid == 0) | |
180 | return (0); | |
181 | /* | |
182 | * Access check is based on only one of owner, group, public. | |
183 | * If not owner, then check group. If not a member of the | |
184 | * group, then check public access. | |
185 | */ | |
186 | if (cred->cr_uid != ip->i_uid) { | |
187 | mode >>= 3; | |
188 | gp = cred->cr_groups; | |
189 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
190 | if (ip->i_gid == *gp) | |
191 | goto found; | |
192 | mode >>= 3; | |
193 | found: | |
194 | ; | |
195 | } | |
196 | if ((ip->i_mode & mode) != 0) | |
197 | return (0); | |
198 | return (EACCES); | |
199 | } | |
200 | ||
201 | /* ARGSUSED */ | |
202 | ufs_getattr(vp, vap, cred, p) | |
203 | struct vnode *vp; | |
204 | register struct vattr *vap; | |
205 | struct ucred *cred; | |
206 | struct proc *p; | |
207 | { | |
208 | register struct inode *ip = VTOI(vp); | |
209 | ||
210 | ITIMES(ip, &time, &time); | |
211 | /* | |
212 | * Copy from inode table | |
213 | */ | |
214 | vap->va_fsid = ip->i_dev; | |
215 | vap->va_fileid = ip->i_number; | |
216 | vap->va_mode = ip->i_mode & ~IFMT; | |
217 | vap->va_nlink = ip->i_nlink; | |
218 | vap->va_uid = ip->i_uid; | |
219 | vap->va_gid = ip->i_gid; | |
220 | vap->va_rdev = (dev_t)ip->i_rdev; | |
221 | #ifdef tahoe | |
222 | vap->va_size = ip->i_size; | |
223 | vap->va_size_rsv = 0; | |
224 | #else | |
225 | vap->va_qsize = ip->i_din.di_qsize; | |
226 | #endif | |
227 | vap->va_atime.tv_sec = ip->i_atime; | |
228 | vap->va_atime.tv_usec = 0; | |
229 | vap->va_mtime.tv_sec = ip->i_mtime; | |
230 | vap->va_mtime.tv_usec = 0; | |
231 | vap->va_ctime.tv_sec = ip->i_ctime; | |
232 | vap->va_ctime.tv_usec = 0; | |
233 | vap->va_flags = ip->i_flags; | |
234 | vap->va_gen = ip->i_gen; | |
235 | /* this doesn't belong here */ | |
236 | if (vp->v_type == VBLK) | |
237 | vap->va_blocksize = BLKDEV_IOSIZE; | |
238 | else if (vp->v_type == VCHR) | |
239 | vap->va_blocksize = MAXBSIZE; | |
240 | else | |
241 | vap->va_blocksize = ip->i_fs->fs_bsize; | |
242 | vap->va_bytes = dbtob(ip->i_blocks); | |
243 | vap->va_bytes_rsv = 0; | |
244 | vap->va_type = vp->v_type; | |
245 | return (0); | |
246 | } | |
247 | ||
248 | /* | |
249 | * Set attribute vnode op. called from several syscalls | |
250 | */ | |
251 | ufs_setattr(vp, vap, cred, p) | |
252 | register struct vnode *vp; | |
253 | register struct vattr *vap; | |
254 | register struct ucred *cred; | |
255 | struct proc *p; | |
256 | { | |
257 | register struct inode *ip = VTOI(vp); | |
258 | int error = 0; | |
259 | ||
260 | /* | |
261 | * Check for unsetable attributes. | |
262 | */ | |
263 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
264 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
265 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
266 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { | |
267 | return (EINVAL); | |
268 | } | |
269 | /* | |
270 | * Go through the fields and update iff not VNOVAL. | |
271 | */ | |
272 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
273 | if (error = chown1(vp, vap->va_uid, vap->va_gid, p)) | |
274 | return (error); | |
275 | if (vap->va_size != VNOVAL) { | |
276 | if (vp->v_type == VDIR) | |
277 | return (EISDIR); | |
278 | if (error = itrunc(ip, vap->va_size, 0)) /* XXX IO_SYNC? */ | |
279 | return (error); | |
280 | } | |
281 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { | |
282 | if (cred->cr_uid != ip->i_uid && | |
283 | (error = suser(cred, &p->p_acflag))) | |
284 | return (error); | |
285 | if (vap->va_atime.tv_sec != VNOVAL) | |
286 | ip->i_flag |= IACC; | |
287 | if (vap->va_mtime.tv_sec != VNOVAL) | |
288 | ip->i_flag |= IUPD; | |
289 | ip->i_flag |= ICHG; | |
290 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
291 | return (error); | |
292 | } | |
293 | if (vap->va_mode != (u_short)VNOVAL) | |
294 | error = chmod1(vp, (int)vap->va_mode, p); | |
295 | if (vap->va_flags != VNOVAL) { | |
296 | if (cred->cr_uid != ip->i_uid && | |
297 | (error = suser(cred, &p->p_acflag))) | |
298 | return (error); | |
299 | if (cred->cr_uid == 0) { | |
300 | ip->i_flags = vap->va_flags; | |
301 | } else { | |
302 | ip->i_flags &= 0xffff0000; | |
303 | ip->i_flags |= (vap->va_flags & 0xffff); | |
304 | } | |
305 | ip->i_flag |= ICHG; | |
306 | } | |
307 | return (error); | |
308 | } | |
309 | ||
310 | /* | |
311 | * Change the mode on a file. | |
312 | * Inode must be locked before calling. | |
313 | */ | |
314 | chmod1(vp, mode, p) | |
315 | register struct vnode *vp; | |
316 | register int mode; | |
317 | struct proc *p; | |
318 | { | |
319 | register struct ucred *cred = p->p_ucred; | |
320 | register struct inode *ip = VTOI(vp); | |
321 | int error; | |
322 | ||
323 | if (cred->cr_uid != ip->i_uid && | |
324 | (error = suser(cred, &p->p_acflag))) | |
325 | return (error); | |
326 | if (cred->cr_uid) { | |
327 | if (vp->v_type != VDIR && (mode & ISVTX)) | |
328 | return (EFTYPE); | |
329 | if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) | |
330 | return (EPERM); | |
331 | } | |
332 | ip->i_mode &= ~07777; | |
333 | ip->i_mode |= mode & 07777; | |
334 | ip->i_flag |= ICHG; | |
335 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) | |
336 | (void) vnode_pager_uncache(vp); | |
337 | return (0); | |
338 | } | |
339 | ||
340 | /* | |
341 | * Perform chown operation on inode ip; | |
342 | * inode must be locked prior to call. | |
343 | */ | |
344 | chown1(vp, uid, gid, p) | |
345 | register struct vnode *vp; | |
346 | uid_t uid; | |
347 | gid_t gid; | |
348 | struct proc *p; | |
349 | { | |
350 | register struct inode *ip = VTOI(vp); | |
351 | register struct ucred *cred = p->p_ucred; | |
352 | uid_t ouid; | |
353 | gid_t ogid; | |
354 | int error = 0; | |
355 | #ifdef QUOTA | |
356 | register int i; | |
357 | long change; | |
358 | #endif | |
359 | ||
360 | if (uid == (u_short)VNOVAL) | |
361 | uid = ip->i_uid; | |
362 | if (gid == (u_short)VNOVAL) | |
363 | gid = ip->i_gid; | |
364 | /* | |
365 | * If we don't own the file, are trying to change the owner | |
366 | * of the file, or are not a member of the target group, | |
367 | * the caller must be superuser or the call fails. | |
368 | */ | |
369 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || | |
370 | !groupmember((gid_t)gid, cred)) && | |
371 | (error = suser(cred, &p->p_acflag))) | |
372 | return (error); | |
373 | ouid = ip->i_uid; | |
374 | ogid = ip->i_gid; | |
375 | #ifdef QUOTA | |
376 | if (error = getinoquota(ip)) | |
377 | return (error); | |
378 | if (ouid == uid) { | |
379 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
380 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
381 | } | |
382 | if (ogid == gid) { | |
383 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
384 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
385 | } | |
386 | change = ip->i_blocks; | |
387 | (void) chkdq(ip, -change, cred, CHOWN); | |
388 | (void) chkiq(ip, -1, cred, CHOWN); | |
389 | for (i = 0; i < MAXQUOTAS; i++) { | |
390 | dqrele(vp, ip->i_dquot[i]); | |
391 | ip->i_dquot[i] = NODQUOT; | |
392 | } | |
393 | #endif | |
394 | ip->i_uid = uid; | |
395 | ip->i_gid = gid; | |
396 | #ifdef QUOTA | |
397 | if ((error = getinoquota(ip)) == 0) { | |
398 | if (ouid == uid) { | |
399 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
400 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
401 | } | |
402 | if (ogid == gid) { | |
403 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
404 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
405 | } | |
406 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
407 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
408 | goto good; | |
409 | else | |
410 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
411 | } | |
412 | for (i = 0; i < MAXQUOTAS; i++) { | |
413 | dqrele(vp, ip->i_dquot[i]); | |
414 | ip->i_dquot[i] = NODQUOT; | |
415 | } | |
416 | } | |
417 | ip->i_uid = ouid; | |
418 | ip->i_gid = ogid; | |
419 | if (getinoquota(ip) == 0) { | |
420 | if (ouid == uid) { | |
421 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
422 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
423 | } | |
424 | if (ogid == gid) { | |
425 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
426 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
427 | } | |
428 | (void) chkdq(ip, change, cred, FORCE|CHOWN); | |
429 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
430 | (void) getinoquota(ip); | |
431 | } | |
432 | return (error); | |
433 | good: | |
434 | if (getinoquota(ip)) | |
435 | panic("chown: lost quota"); | |
436 | #endif /* QUOTA */ | |
437 | if (ouid != uid || ogid != gid) | |
438 | ip->i_flag |= ICHG; | |
439 | if (ouid != uid && cred->cr_uid != 0) | |
440 | ip->i_mode &= ~ISUID; | |
441 | if (ogid != gid && cred->cr_uid != 0) | |
442 | ip->i_mode &= ~ISGID; | |
443 | return (0); | |
444 | } | |
445 | ||
446 | /* | |
447 | * Vnode op for reading. | |
448 | */ | |
449 | /* ARGSUSED */ | |
450 | ufs_read(vp, uio, ioflag, cred) | |
451 | struct vnode *vp; | |
452 | register struct uio *uio; | |
453 | int ioflag; | |
454 | struct ucred *cred; | |
455 | { | |
456 | register struct inode *ip = VTOI(vp); | |
457 | register struct fs *fs; | |
458 | struct buf *bp; | |
459 | daddr_t lbn, bn, rablock; | |
460 | int size, diff, error = 0; | |
461 | long n, on, type; | |
462 | ||
463 | #ifdef DIAGNOSTIC | |
464 | if (uio->uio_rw != UIO_READ) | |
465 | panic("ufs_read mode"); | |
466 | type = ip->i_mode & IFMT; | |
467 | if (type != IFDIR && type != IFREG && type != IFLNK) | |
468 | panic("ufs_read type"); | |
469 | #endif | |
470 | if (uio->uio_resid == 0) | |
471 | return (0); | |
472 | if (uio->uio_offset < 0) | |
473 | return (EINVAL); | |
474 | ip->i_flag |= IACC; | |
475 | fs = ip->i_fs; | |
476 | do { | |
477 | lbn = lblkno(fs, uio->uio_offset); | |
478 | on = blkoff(fs, uio->uio_offset); | |
479 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
480 | diff = ip->i_size - uio->uio_offset; | |
481 | if (diff <= 0) | |
482 | return (0); | |
483 | if (diff < n) | |
484 | n = diff; | |
485 | size = blksize(fs, ip, lbn); | |
486 | rablock = lbn + 1; | |
487 | if (vp->v_lastr + 1 == lbn && | |
488 | lblktosize(fs, rablock) < ip->i_size) | |
489 | error = breada(ITOV(ip), lbn, size, rablock, | |
490 | blksize(fs, ip, rablock), NOCRED, &bp); | |
491 | else | |
492 | error = bread(ITOV(ip), lbn, size, NOCRED, &bp); | |
493 | vp->v_lastr = lbn; | |
494 | n = MIN(n, size - bp->b_resid); | |
495 | if (error) { | |
496 | brelse(bp); | |
497 | return (error); | |
498 | } | |
499 | error = uiomove(bp->b_un.b_addr + on, (int)n, uio); | |
500 | if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size) | |
501 | bp->b_flags |= B_AGE; | |
502 | brelse(bp); | |
503 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
504 | return (error); | |
505 | } | |
506 | ||
507 | /* | |
508 | * Vnode op for writing. | |
509 | */ | |
510 | ufs_write(vp, uio, ioflag, cred) | |
511 | register struct vnode *vp; | |
512 | struct uio *uio; | |
513 | int ioflag; | |
514 | struct ucred *cred; | |
515 | { | |
516 | struct proc *p = uio->uio_procp; | |
517 | register struct inode *ip = VTOI(vp); | |
518 | register struct fs *fs; | |
519 | struct buf *bp; | |
520 | daddr_t lbn, bn; | |
521 | u_long osize; | |
522 | int n, on, flags; | |
523 | int size, resid, error = 0; | |
524 | ||
525 | #ifdef DIAGNOSTIC | |
526 | if (uio->uio_rw != UIO_WRITE) | |
527 | panic("ufs_write mode"); | |
528 | #endif | |
529 | switch (vp->v_type) { | |
530 | case VREG: | |
531 | if (ioflag & IO_APPEND) | |
532 | uio->uio_offset = ip->i_size; | |
533 | /* fall through */ | |
534 | case VLNK: | |
535 | break; | |
536 | ||
537 | case VDIR: | |
538 | if ((ioflag & IO_SYNC) == 0) | |
539 | panic("ufs_write nonsync dir write"); | |
540 | break; | |
541 | ||
542 | default: | |
543 | panic("ufs_write type"); | |
544 | } | |
545 | if (uio->uio_offset < 0) | |
546 | return (EINVAL); | |
547 | if (uio->uio_resid == 0) | |
548 | return (0); | |
549 | /* | |
550 | * Maybe this should be above the vnode op call, but so long as | |
551 | * file servers have no limits, i don't think it matters | |
552 | */ | |
553 | if (vp->v_type == VREG && p && | |
554 | uio->uio_offset + uio->uio_resid > | |
555 | p->p_rlimit[RLIMIT_FSIZE].rlim_cur) { | |
556 | psignal(p, SIGXFSZ); | |
557 | return (EFBIG); | |
558 | } | |
559 | resid = uio->uio_resid; | |
560 | osize = ip->i_size; | |
561 | fs = ip->i_fs; | |
562 | flags = 0; | |
563 | if (ioflag & IO_SYNC) | |
564 | flags = B_SYNC; | |
565 | do { | |
566 | lbn = lblkno(fs, uio->uio_offset); | |
567 | on = blkoff(fs, uio->uio_offset); | |
568 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
569 | if (n < fs->fs_bsize) | |
570 | flags |= B_CLRBUF; | |
571 | else | |
572 | flags &= ~B_CLRBUF; | |
573 | if (error = balloc(ip, lbn, (int)(on + n), &bp, flags)) | |
574 | break; | |
575 | bn = bp->b_blkno; | |
576 | if (uio->uio_offset + n > ip->i_size) { | |
577 | ip->i_size = uio->uio_offset + n; | |
578 | vnode_pager_setsize(vp, ip->i_size); | |
579 | } | |
580 | size = blksize(fs, ip, lbn); | |
581 | (void) vnode_pager_uncache(vp); | |
582 | n = MIN(n, size - bp->b_resid); | |
583 | error = uiomove(bp->b_un.b_addr + on, n, uio); | |
584 | if (ioflag & IO_SYNC) | |
585 | (void) bwrite(bp); | |
586 | else if (n + on == fs->fs_bsize) { | |
587 | bp->b_flags |= B_AGE; | |
588 | bawrite(bp); | |
589 | } else | |
590 | bdwrite(bp); | |
591 | ip->i_flag |= IUPD|ICHG; | |
592 | if (cred->cr_uid != 0) | |
593 | ip->i_mode &= ~(ISUID|ISGID); | |
594 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
595 | if (error && (ioflag & IO_UNIT)) { | |
596 | (void) itrunc(ip, osize, ioflag & IO_SYNC); | |
597 | uio->uio_offset -= resid - uio->uio_resid; | |
598 | uio->uio_resid = resid; | |
599 | } | |
600 | if (!error && (ioflag & IO_SYNC)) | |
601 | error = iupdat(ip, &time, &time, 1); | |
602 | return (error); | |
603 | } | |
604 | ||
605 | /* ARGSUSED */ | |
606 | ufs_ioctl(vp, com, data, fflag, cred, p) | |
607 | struct vnode *vp; | |
608 | int com; | |
609 | caddr_t data; | |
610 | int fflag; | |
611 | struct ucred *cred; | |
612 | struct proc *p; | |
613 | { | |
614 | ||
615 | return (ENOTTY); | |
616 | } | |
617 | ||
618 | /* ARGSUSED */ | |
619 | ufs_select(vp, which, fflags, cred, p) | |
620 | struct vnode *vp; | |
621 | int which, fflags; | |
622 | struct ucred *cred; | |
623 | struct proc *p; | |
624 | { | |
625 | ||
626 | /* | |
627 | * We should really check to see if I/O is possible. | |
628 | */ | |
629 | return (1); | |
630 | } | |
631 | ||
632 | /* | |
633 | * Mmap a file | |
634 | * | |
635 | * NB Currently unsupported. | |
636 | */ | |
637 | /* ARGSUSED */ | |
638 | ufs_mmap(vp, fflags, cred, p) | |
639 | struct vnode *vp; | |
640 | int fflags; | |
641 | struct ucred *cred; | |
642 | struct proc *p; | |
643 | { | |
644 | ||
645 | return (EINVAL); | |
646 | } | |
647 | ||
648 | /* | |
649 | * Synch an open file. | |
650 | */ | |
651 | /* ARGSUSED */ | |
652 | ufs_fsync(vp, fflags, cred, waitfor, p) | |
653 | struct vnode *vp; | |
654 | int fflags; | |
655 | struct ucred *cred; | |
656 | int waitfor; | |
657 | struct proc *p; | |
658 | { | |
659 | struct inode *ip = VTOI(vp); | |
660 | ||
661 | if (fflags & FWRITE) | |
662 | ip->i_flag |= ICHG; | |
663 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); | |
664 | return (iupdat(ip, &time, &time, waitfor == MNT_WAIT)); | |
665 | } | |
666 | ||
667 | /* | |
668 | * Seek on a file | |
669 | * | |
670 | * Nothing to do, so just return. | |
671 | */ | |
672 | /* ARGSUSED */ | |
673 | ufs_seek(vp, oldoff, newoff, cred) | |
674 | struct vnode *vp; | |
675 | off_t oldoff, newoff; | |
676 | struct ucred *cred; | |
677 | { | |
678 | ||
679 | return (0); | |
680 | } | |
681 | ||
682 | /* | |
683 | * ufs remove | |
684 | * Hard to avoid races here, especially | |
685 | * in unlinking directories. | |
686 | */ | |
687 | ufs_remove(ndp, p) | |
688 | struct nameidata *ndp; | |
689 | struct proc *p; | |
690 | { | |
691 | register struct inode *ip, *dp; | |
692 | int error; | |
693 | ||
694 | ip = VTOI(ndp->ni_vp); | |
695 | dp = VTOI(ndp->ni_dvp); | |
696 | error = dirremove(ndp); | |
697 | if (!error) { | |
698 | ip->i_nlink--; | |
699 | ip->i_flag |= ICHG; | |
700 | } | |
701 | if (dp == ip) | |
702 | vrele(ITOV(ip)); | |
703 | else | |
704 | iput(ip); | |
705 | iput(dp); | |
706 | return (error); | |
707 | } | |
708 | ||
709 | /* | |
710 | * link vnode call | |
711 | */ | |
712 | ufs_link(vp, ndp, p) | |
713 | register struct vnode *vp; | |
714 | register struct nameidata *ndp; | |
715 | struct proc *p; | |
716 | { | |
717 | register struct inode *ip = VTOI(vp); | |
718 | int error; | |
719 | ||
720 | #ifdef DIANOSTIC | |
721 | if ((ndp->ni_nameiop & HASBUF) == 0) | |
722 | panic("ufs_link: no name"); | |
723 | #endif | |
724 | if ((unsigned short)ip->i_nlink >= LINK_MAX) { | |
725 | free(ndp->ni_pnbuf, M_NAMEI); | |
726 | return (EMLINK); | |
727 | } | |
728 | if (ndp->ni_dvp != vp) | |
729 | ILOCK(ip); | |
730 | ip->i_nlink++; | |
731 | ip->i_flag |= ICHG; | |
732 | error = iupdat(ip, &time, &time, 1); | |
733 | if (!error) | |
734 | error = direnter(ip, ndp); | |
735 | if (ndp->ni_dvp != vp) | |
736 | IUNLOCK(ip); | |
737 | FREE(ndp->ni_pnbuf, M_NAMEI); | |
738 | vput(ndp->ni_dvp); | |
739 | if (error) { | |
740 | ip->i_nlink--; | |
741 | ip->i_flag |= ICHG; | |
742 | } | |
743 | return (error); | |
744 | } | |
745 | ||
746 | /* | |
747 | * Rename system call. | |
748 | * rename("foo", "bar"); | |
749 | * is essentially | |
750 | * unlink("bar"); | |
751 | * link("foo", "bar"); | |
752 | * unlink("foo"); | |
753 | * but ``atomically''. Can't do full commit without saving state in the | |
754 | * inode on disk which isn't feasible at this time. Best we can do is | |
755 | * always guarantee the target exists. | |
756 | * | |
757 | * Basic algorithm is: | |
758 | * | |
759 | * 1) Bump link count on source while we're linking it to the | |
760 | * target. This also ensure the inode won't be deleted out | |
761 | * from underneath us while we work (it may be truncated by | |
762 | * a concurrent `trunc' or `open' for creation). | |
763 | * 2) Link source to destination. If destination already exists, | |
764 | * delete it first. | |
765 | * 3) Unlink source reference to inode if still around. If a | |
766 | * directory was moved and the parent of the destination | |
767 | * is different from the source, patch the ".." entry in the | |
768 | * directory. | |
769 | */ | |
770 | ufs_rename(fndp, tndp, p) | |
771 | register struct nameidata *fndp, *tndp; | |
772 | struct proc *p; | |
773 | { | |
774 | register struct inode *ip, *xp, *dp; | |
775 | struct dirtemplate dirbuf; | |
776 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
777 | int error = 0; | |
778 | ||
779 | #ifdef DIANOSTIC | |
780 | if ((tndp->ni_nameiop & HASBUF) == 0 || | |
781 | (fndp->ni_nameiop & HASBUF) == 0) | |
782 | panic("ufs_rename: no name"); | |
783 | #endif | |
784 | dp = VTOI(fndp->ni_dvp); | |
785 | ip = VTOI(fndp->ni_vp); | |
786 | /* | |
787 | * Check if just deleting a link name. | |
788 | */ | |
789 | if (fndp->ni_vp == tndp->ni_vp) { | |
790 | VOP_ABORTOP(tndp); | |
791 | vput(tndp->ni_dvp); | |
792 | vput(tndp->ni_vp); | |
793 | vrele(fndp->ni_dvp); | |
794 | if ((ip->i_mode&IFMT) == IFDIR) { | |
795 | VOP_ABORTOP(fndp); | |
796 | vrele(fndp->ni_vp); | |
797 | return (EINVAL); | |
798 | } | |
799 | doingdirectory = 0; | |
800 | goto unlinkit; | |
801 | } | |
802 | ILOCK(ip); | |
803 | if ((ip->i_mode&IFMT) == IFDIR) { | |
804 | /* | |
805 | * Avoid ".", "..", and aliases of "." for obvious reasons. | |
806 | */ | |
807 | if ((fndp->ni_namelen == 1 && fndp->ni_ptr[0] == '.') || | |
808 | dp == ip || fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
809 | VOP_ABORTOP(tndp); | |
810 | vput(tndp->ni_dvp); | |
811 | if (tndp->ni_vp) | |
812 | vput(tndp->ni_vp); | |
813 | VOP_ABORTOP(fndp); | |
814 | vrele(fndp->ni_dvp); | |
815 | vput(fndp->ni_vp); | |
816 | return (EINVAL); | |
817 | } | |
818 | ip->i_flag |= IRENAME; | |
819 | oldparent = dp->i_number; | |
820 | doingdirectory++; | |
821 | } | |
822 | vrele(fndp->ni_dvp); | |
823 | ||
824 | /* | |
825 | * 1) Bump link count while we're moving stuff | |
826 | * around. If we crash somewhere before | |
827 | * completing our work, the link count | |
828 | * may be wrong, but correctable. | |
829 | */ | |
830 | ip->i_nlink++; | |
831 | ip->i_flag |= ICHG; | |
832 | error = iupdat(ip, &time, &time, 1); | |
833 | IUNLOCK(ip); | |
834 | ||
835 | /* | |
836 | * When the target exists, both the directory | |
837 | * and target vnodes are returned locked. | |
838 | */ | |
839 | dp = VTOI(tndp->ni_dvp); | |
840 | xp = NULL; | |
841 | if (tndp->ni_vp) | |
842 | xp = VTOI(tndp->ni_vp); | |
843 | /* | |
844 | * If ".." must be changed (ie the directory gets a new | |
845 | * parent) then the source directory must not be in the | |
846 | * directory heirarchy above the target, as this would | |
847 | * orphan everything below the source directory. Also | |
848 | * the user must have write permission in the source so | |
849 | * as to be able to change "..". We must repeat the call | |
850 | * to namei, as the parent directory is unlocked by the | |
851 | * call to checkpath(). | |
852 | */ | |
853 | if (oldparent != dp->i_number) | |
854 | newparent = dp->i_number; | |
855 | if (doingdirectory && newparent) { | |
856 | VOP_LOCK(fndp->ni_vp); | |
857 | error = ufs_access(fndp->ni_vp, VWRITE, tndp->ni_cred, p); | |
858 | VOP_UNLOCK(fndp->ni_vp); | |
859 | if (error) | |
860 | goto bad; | |
861 | if (xp != NULL) | |
862 | iput(xp); | |
863 | if (error = checkpath(ip, dp, tndp->ni_cred)) | |
864 | goto out; | |
865 | if ((tndp->ni_nameiop & SAVESTART) == 0) | |
866 | panic("ufs_rename: lost to startdir"); | |
867 | if (error = lookup(tndp, p)) | |
868 | goto out; | |
869 | dp = VTOI(tndp->ni_dvp); | |
870 | xp = NULL; | |
871 | if (tndp->ni_vp) | |
872 | xp = VTOI(tndp->ni_vp); | |
873 | } | |
874 | /* | |
875 | * 2) If target doesn't exist, link the target | |
876 | * to the source and unlink the source. | |
877 | * Otherwise, rewrite the target directory | |
878 | * entry to reference the source inode and | |
879 | * expunge the original entry's existence. | |
880 | */ | |
881 | if (xp == NULL) { | |
882 | if (dp->i_dev != ip->i_dev) | |
883 | panic("rename: EXDEV"); | |
884 | /* | |
885 | * Account for ".." in new directory. | |
886 | * When source and destination have the same | |
887 | * parent we don't fool with the link count. | |
888 | */ | |
889 | if (doingdirectory && newparent) { | |
890 | if ((unsigned short)dp->i_nlink >= LINK_MAX) { | |
891 | error = EMLINK; | |
892 | goto bad; | |
893 | } | |
894 | dp->i_nlink++; | |
895 | dp->i_flag |= ICHG; | |
896 | if (error = iupdat(dp, &time, &time, 1)) | |
897 | goto bad; | |
898 | } | |
899 | if (error = direnter(ip, tndp)) { | |
900 | if (doingdirectory && newparent) { | |
901 | dp->i_nlink--; | |
902 | dp->i_flag |= ICHG; | |
903 | (void) iupdat(dp, &time, &time, 1); | |
904 | } | |
905 | goto bad; | |
906 | } | |
907 | iput(dp); | |
908 | } else { | |
909 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) | |
910 | panic("rename: EXDEV"); | |
911 | /* | |
912 | * Short circuit rename(foo, foo). | |
913 | */ | |
914 | if (xp->i_number == ip->i_number) | |
915 | panic("rename: same file"); | |
916 | /* | |
917 | * If the parent directory is "sticky", then the user must | |
918 | * own the parent directory, or the destination of the rename, | |
919 | * otherwise the destination may not be changed (except by | |
920 | * root). This implements append-only directories. | |
921 | */ | |
922 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && | |
923 | tndp->ni_cred->cr_uid != dp->i_uid && | |
924 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
925 | error = EPERM; | |
926 | goto bad; | |
927 | } | |
928 | /* | |
929 | * Target must be empty if a directory and have no links | |
930 | * to it. Also, ensure source and target are compatible | |
931 | * (both directories, or both not directories). | |
932 | */ | |
933 | if ((xp->i_mode&IFMT) == IFDIR) { | |
934 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || | |
935 | xp->i_nlink > 2) { | |
936 | error = ENOTEMPTY; | |
937 | goto bad; | |
938 | } | |
939 | if (!doingdirectory) { | |
940 | error = ENOTDIR; | |
941 | goto bad; | |
942 | } | |
943 | cache_purge(ITOV(dp)); | |
944 | } else if (doingdirectory) { | |
945 | error = EISDIR; | |
946 | goto bad; | |
947 | } | |
948 | if (error = dirrewrite(dp, ip, tndp)) | |
949 | goto bad; | |
950 | /* | |
951 | * If the target directory is in the same | |
952 | * directory as the source directory, | |
953 | * decrement the link count on the parent | |
954 | * of the target directory. | |
955 | */ | |
956 | if (doingdirectory && !newparent) { | |
957 | dp->i_nlink--; | |
958 | dp->i_flag |= ICHG; | |
959 | } | |
960 | vput(ITOV(dp)); | |
961 | /* | |
962 | * Adjust the link count of the target to | |
963 | * reflect the dirrewrite above. If this is | |
964 | * a directory it is empty and there are | |
965 | * no links to it, so we can squash the inode and | |
966 | * any space associated with it. We disallowed | |
967 | * renaming over top of a directory with links to | |
968 | * it above, as the remaining link would point to | |
969 | * a directory without "." or ".." entries. | |
970 | */ | |
971 | xp->i_nlink--; | |
972 | if (doingdirectory) { | |
973 | if (--xp->i_nlink != 0) | |
974 | panic("rename: linked directory"); | |
975 | error = itrunc(xp, (u_long)0, IO_SYNC); | |
976 | } | |
977 | xp->i_flag |= ICHG; | |
978 | iput(xp); | |
979 | xp = NULL; | |
980 | } | |
981 | ||
982 | /* | |
983 | * 3) Unlink the source. | |
984 | */ | |
985 | unlinkit: | |
986 | fndp->ni_nameiop &= ~MODMASK; | |
987 | fndp->ni_nameiop |= LOCKPARENT | LOCKLEAF; | |
988 | if ((fndp->ni_nameiop & SAVESTART) == 0) | |
989 | panic("ufs_rename: lost from startdir"); | |
990 | (void) lookup(fndp, p); | |
991 | if (fndp->ni_vp != NULL) { | |
992 | xp = VTOI(fndp->ni_vp); | |
993 | dp = VTOI(fndp->ni_dvp); | |
994 | } else { | |
995 | /* | |
996 | * From name has disappeared. | |
997 | */ | |
998 | if (doingdirectory) | |
999 | panic("rename: lost dir entry"); | |
1000 | vrele(ITOV(ip)); | |
1001 | return (0); | |
1002 | } | |
1003 | /* | |
1004 | * Ensure that the directory entry still exists and has not | |
1005 | * changed while the new name has been entered. If the source is | |
1006 | * a file then the entry may have been unlinked or renamed. In | |
1007 | * either case there is no further work to be done. If the source | |
1008 | * is a directory then it cannot have been rmdir'ed; its link | |
1009 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
1010 | * The IRENAME flag ensures that it cannot be moved by another | |
1011 | * rename. | |
1012 | */ | |
1013 | if (xp != ip) { | |
1014 | if (doingdirectory) | |
1015 | panic("rename: lost dir entry"); | |
1016 | } else { | |
1017 | /* | |
1018 | * If the source is a directory with a | |
1019 | * new parent, the link count of the old | |
1020 | * parent directory must be decremented | |
1021 | * and ".." set to point to the new parent. | |
1022 | */ | |
1023 | if (doingdirectory && newparent) { | |
1024 | dp->i_nlink--; | |
1025 | dp->i_flag |= ICHG; | |
1026 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, | |
1027 | sizeof (struct dirtemplate), (off_t)0, | |
1028 | UIO_SYSSPACE, IO_NODELOCKED, | |
1029 | tndp->ni_cred, (int *)0, (struct proc *)0); | |
1030 | if (error == 0) { | |
1031 | if (dirbuf.dotdot_namlen != 2 || | |
1032 | dirbuf.dotdot_name[0] != '.' || | |
1033 | dirbuf.dotdot_name[1] != '.') { | |
1034 | dirbad(xp, 12, "rename: mangled dir"); | |
1035 | } else { | |
1036 | dirbuf.dotdot_ino = newparent; | |
1037 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), | |
1038 | (caddr_t)&dirbuf, | |
1039 | sizeof (struct dirtemplate), | |
1040 | (off_t)0, UIO_SYSSPACE, | |
1041 | IO_NODELOCKED|IO_SYNC, | |
1042 | tndp->ni_cred, (int *)0, | |
1043 | (struct proc *)0); | |
1044 | cache_purge(ITOV(dp)); | |
1045 | } | |
1046 | } | |
1047 | } | |
1048 | error = dirremove(fndp); | |
1049 | if (!error) { | |
1050 | xp->i_nlink--; | |
1051 | xp->i_flag |= ICHG; | |
1052 | } | |
1053 | xp->i_flag &= ~IRENAME; | |
1054 | } | |
1055 | if (dp) | |
1056 | vput(ITOV(dp)); | |
1057 | if (xp) | |
1058 | vput(ITOV(xp)); | |
1059 | vrele(ITOV(ip)); | |
1060 | return (error); | |
1061 | ||
1062 | bad: | |
1063 | if (xp) | |
1064 | vput(ITOV(xp)); | |
1065 | vput(ITOV(dp)); | |
1066 | out: | |
1067 | ip->i_nlink--; | |
1068 | ip->i_flag |= ICHG; | |
1069 | vrele(ITOV(ip)); | |
1070 | return (error); | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * A virgin directory (no blushing please). | |
1075 | */ | |
1076 | struct dirtemplate mastertemplate = { | |
1077 | 0, 12, 1, ".", | |
1078 | 0, DIRBLKSIZ - 12, 2, ".." | |
1079 | }; | |
1080 | ||
1081 | /* | |
1082 | * Mkdir system call | |
1083 | */ | |
1084 | ufs_mkdir(ndp, vap, p) | |
1085 | struct nameidata *ndp; | |
1086 | struct vattr *vap; | |
1087 | struct proc *p; | |
1088 | { | |
1089 | register struct inode *ip, *dp; | |
1090 | struct inode *tip; | |
1091 | struct vnode *dvp; | |
1092 | struct dirtemplate dirtemplate; | |
1093 | int error; | |
1094 | int dmode; | |
1095 | ||
1096 | #ifdef DIANOSTIC | |
1097 | if ((ndp->ni_nameiop & HASBUF) == 0) | |
1098 | panic("ufs_mkdir: no name"); | |
1099 | #endif | |
1100 | dvp = ndp->ni_dvp; | |
1101 | dp = VTOI(dvp); | |
1102 | if ((unsigned short)dp->i_nlink >= LINK_MAX) { | |
1103 | free(ndp->ni_pnbuf, M_NAMEI); | |
1104 | iput(dp); | |
1105 | return (EMLINK); | |
1106 | } | |
1107 | dmode = vap->va_mode&0777; | |
1108 | dmode |= IFDIR; | |
1109 | /* | |
1110 | * Must simulate part of maknode here to acquire the inode, but | |
1111 | * not have it entered in the parent directory. The entry is made | |
1112 | * later after writing "." and ".." entries. | |
1113 | */ | |
1114 | if (error = ialloc(dp, dirpref(dp->i_fs), dmode, ndp->ni_cred, &tip)) { | |
1115 | free(ndp->ni_pnbuf, M_NAMEI); | |
1116 | iput(dp); | |
1117 | return (error); | |
1118 | } | |
1119 | ip = tip; | |
1120 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1121 | ip->i_gid = dp->i_gid; | |
1122 | #ifdef QUOTA | |
1123 | if ((error = getinoquota(ip)) || | |
1124 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1125 | free(ndp->ni_pnbuf, M_NAMEI); | |
1126 | ifree(ip, ip->i_number, dmode); | |
1127 | iput(ip); | |
1128 | iput(dp); | |
1129 | return (error); | |
1130 | } | |
1131 | #endif | |
1132 | ip->i_flag |= IACC|IUPD|ICHG; | |
1133 | ip->i_mode = dmode; | |
1134 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
1135 | ip->i_nlink = 2; | |
1136 | error = iupdat(ip, &time, &time, 1); | |
1137 | ||
1138 | /* | |
1139 | * Bump link count in parent directory | |
1140 | * to reflect work done below. Should | |
1141 | * be done before reference is created | |
1142 | * so reparation is possible if we crash. | |
1143 | */ | |
1144 | dp->i_nlink++; | |
1145 | dp->i_flag |= ICHG; | |
1146 | if (error = iupdat(dp, &time, &time, 1)) | |
1147 | goto bad; | |
1148 | ||
1149 | /* | |
1150 | * Initialize directory with "." | |
1151 | * and ".." from static template. | |
1152 | */ | |
1153 | dirtemplate = mastertemplate; | |
1154 | dirtemplate.dot_ino = ip->i_number; | |
1155 | dirtemplate.dotdot_ino = dp->i_number; | |
1156 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, | |
1157 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, | |
1158 | IO_NODELOCKED|IO_SYNC, ndp->ni_cred, (int *)0, (struct proc *)0); | |
1159 | if (error) { | |
1160 | dp->i_nlink--; | |
1161 | dp->i_flag |= ICHG; | |
1162 | goto bad; | |
1163 | } | |
1164 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) { | |
1165 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
1166 | } else { | |
1167 | ip->i_size = DIRBLKSIZ; | |
1168 | ip->i_flag |= ICHG; | |
1169 | } | |
1170 | /* | |
1171 | * Directory all set up, now | |
1172 | * install the entry for it in | |
1173 | * the parent directory. | |
1174 | */ | |
1175 | if (error = direnter(ip, ndp)) { | |
1176 | dp->i_nlink--; | |
1177 | dp->i_flag |= ICHG; | |
1178 | } | |
1179 | bad: | |
1180 | /* | |
1181 | * No need to do an explicit itrunc here, | |
1182 | * vrele will do this for us because we set | |
1183 | * the link count to 0. | |
1184 | */ | |
1185 | if (error) { | |
1186 | ip->i_nlink = 0; | |
1187 | ip->i_flag |= ICHG; | |
1188 | iput(ip); | |
1189 | } else | |
1190 | ndp->ni_vp = ITOV(ip); | |
1191 | FREE(ndp->ni_pnbuf, M_NAMEI); | |
1192 | iput(dp); | |
1193 | return (error); | |
1194 | } | |
1195 | ||
1196 | /* | |
1197 | * Rmdir system call. | |
1198 | */ | |
1199 | ufs_rmdir(ndp, p) | |
1200 | register struct nameidata *ndp; | |
1201 | struct proc *p; | |
1202 | { | |
1203 | register struct inode *ip, *dp; | |
1204 | int error = 0; | |
1205 | ||
1206 | ip = VTOI(ndp->ni_vp); | |
1207 | dp = VTOI(ndp->ni_dvp); | |
1208 | /* | |
1209 | * No rmdir "." please. | |
1210 | */ | |
1211 | if (dp == ip) { | |
1212 | vrele(ITOV(dp)); | |
1213 | iput(ip); | |
1214 | return (EINVAL); | |
1215 | } | |
1216 | /* | |
1217 | * Verify the directory is empty (and valid). | |
1218 | * (Rmdir ".." won't be valid since | |
1219 | * ".." will contain a reference to | |
1220 | * the current directory and thus be | |
1221 | * non-empty.) | |
1222 | */ | |
1223 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { | |
1224 | error = ENOTEMPTY; | |
1225 | goto out; | |
1226 | } | |
1227 | /* | |
1228 | * Delete reference to directory before purging | |
1229 | * inode. If we crash in between, the directory | |
1230 | * will be reattached to lost+found, | |
1231 | */ | |
1232 | if (error = dirremove(ndp)) | |
1233 | goto out; | |
1234 | dp->i_nlink--; | |
1235 | dp->i_flag |= ICHG; | |
1236 | cache_purge(ITOV(dp)); | |
1237 | iput(dp); | |
1238 | ndp->ni_dvp = NULL; | |
1239 | /* | |
1240 | * Truncate inode. The only stuff left | |
1241 | * in the directory is "." and "..". The | |
1242 | * "." reference is inconsequential since | |
1243 | * we're quashing it. The ".." reference | |
1244 | * has already been adjusted above. We've | |
1245 | * removed the "." reference and the reference | |
1246 | * in the parent directory, but there may be | |
1247 | * other hard links so decrement by 2 and | |
1248 | * worry about them later. | |
1249 | */ | |
1250 | ip->i_nlink -= 2; | |
1251 | error = itrunc(ip, (u_long)0, IO_SYNC); | |
1252 | cache_purge(ITOV(ip)); | |
1253 | out: | |
1254 | if (ndp->ni_dvp) | |
1255 | iput(dp); | |
1256 | iput(ip); | |
1257 | return (error); | |
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * symlink -- make a symbolic link | |
1262 | */ | |
1263 | ufs_symlink(ndp, vap, target, p) | |
1264 | struct nameidata *ndp; | |
1265 | struct vattr *vap; | |
1266 | char *target; | |
1267 | struct proc *p; | |
1268 | { | |
1269 | struct inode *ip; | |
1270 | int error; | |
1271 | ||
1272 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
1273 | if (error) | |
1274 | return (error); | |
1275 | error = vn_rdwr(UIO_WRITE, ITOV(ip), target, strlen(target), (off_t)0, | |
1276 | UIO_SYSSPACE, IO_NODELOCKED, ndp->ni_cred, (int *)0, | |
1277 | (struct proc *)0); | |
1278 | iput(ip); | |
1279 | return (error); | |
1280 | } | |
1281 | ||
1282 | /* | |
1283 | * Vnode op for read and write | |
1284 | */ | |
1285 | ufs_readdir(vp, uio, cred, eofflagp) | |
1286 | struct vnode *vp; | |
1287 | register struct uio *uio; | |
1288 | struct ucred *cred; | |
1289 | int *eofflagp; | |
1290 | { | |
1291 | int count, lost, error; | |
1292 | ||
1293 | count = uio->uio_resid; | |
1294 | count &= ~(DIRBLKSIZ - 1); | |
1295 | lost = uio->uio_resid - count; | |
1296 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
1297 | return (EINVAL); | |
1298 | uio->uio_resid = count; | |
1299 | uio->uio_iov->iov_len = count; | |
1300 | error = ufs_read(vp, uio, 0, cred); | |
1301 | uio->uio_resid += lost; | |
1302 | if ((VTOI(vp)->i_size - uio->uio_offset) <= 0) | |
1303 | *eofflagp = 1; | |
1304 | else | |
1305 | *eofflagp = 0; | |
1306 | return (error); | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * Return target name of a symbolic link | |
1311 | */ | |
1312 | ufs_readlink(vp, uiop, cred) | |
1313 | struct vnode *vp; | |
1314 | struct uio *uiop; | |
1315 | struct ucred *cred; | |
1316 | { | |
1317 | ||
1318 | return (ufs_read(vp, uiop, 0, cred)); | |
1319 | } | |
1320 | ||
1321 | /* | |
1322 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1323 | * done. If a buffer has been saved in anticipation of a CREATE, delete it. | |
1324 | */ | |
1325 | /* ARGSUSED */ | |
1326 | ufs_abortop(ndp) | |
1327 | struct nameidata *ndp; | |
1328 | { | |
1329 | ||
1330 | if ((ndp->ni_nameiop & (HASBUF | SAVESTART)) == HASBUF) | |
1331 | FREE(ndp->ni_pnbuf, M_NAMEI); | |
1332 | return (0); | |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Lock an inode. | |
1337 | */ | |
1338 | ufs_lock(vp) | |
1339 | struct vnode *vp; | |
1340 | { | |
1341 | register struct inode *ip = VTOI(vp); | |
1342 | ||
1343 | ILOCK(ip); | |
1344 | return (0); | |
1345 | } | |
1346 | ||
1347 | /* | |
1348 | * Unlock an inode. | |
1349 | */ | |
1350 | ufs_unlock(vp) | |
1351 | struct vnode *vp; | |
1352 | { | |
1353 | register struct inode *ip = VTOI(vp); | |
1354 | ||
1355 | if (!(ip->i_flag & ILOCKED)) | |
1356 | panic("ufs_unlock NOT LOCKED"); | |
1357 | IUNLOCK(ip); | |
1358 | return (0); | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * Check for a locked inode. | |
1363 | */ | |
1364 | ufs_islocked(vp) | |
1365 | struct vnode *vp; | |
1366 | { | |
1367 | ||
1368 | if (VTOI(vp)->i_flag & ILOCKED) | |
1369 | return (1); | |
1370 | return (0); | |
1371 | } | |
1372 | ||
1373 | /* | |
1374 | * Get access to bmap | |
1375 | */ | |
1376 | ufs_bmap(vp, bn, vpp, bnp) | |
1377 | struct vnode *vp; | |
1378 | daddr_t bn; | |
1379 | struct vnode **vpp; | |
1380 | daddr_t *bnp; | |
1381 | { | |
1382 | struct inode *ip = VTOI(vp); | |
1383 | ||
1384 | if (vpp != NULL) | |
1385 | *vpp = ip->i_devvp; | |
1386 | if (bnp == NULL) | |
1387 | return (0); | |
1388 | return (bmap(ip, bn, bnp)); | |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | * Calculate the logical to physical mapping if not done already, | |
1393 | * then call the device strategy routine. | |
1394 | */ | |
1395 | int checkoverlap = 0; | |
1396 | ||
1397 | ufs_strategy(bp) | |
1398 | register struct buf *bp; | |
1399 | { | |
1400 | register struct inode *ip = VTOI(bp->b_vp); | |
1401 | struct vnode *vp; | |
1402 | int error; | |
1403 | ||
1404 | if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR) | |
1405 | panic("ufs_strategy: spec"); | |
1406 | if (bp->b_blkno == bp->b_lblkno) { | |
1407 | if (error = bmap(ip, bp->b_lblkno, &bp->b_blkno)) | |
1408 | return (error); | |
1409 | if ((long)bp->b_blkno == -1) | |
1410 | clrbuf(bp); | |
1411 | } | |
1412 | if ((long)bp->b_blkno == -1) { | |
1413 | biodone(bp); | |
1414 | return (0); | |
1415 | } | |
1416 | #ifdef DIAGNOSTIC | |
1417 | if (checkoverlap) { | |
1418 | register struct buf *ep; | |
1419 | struct buf *ebp; | |
1420 | daddr_t start, last; | |
1421 | ||
1422 | ebp = &buf[nbuf]; | |
1423 | start = bp->b_blkno; | |
1424 | last = start + btodb(bp->b_bcount) - 1; | |
1425 | for (ep = buf; ep < ebp; ep++) { | |
1426 | if (ep == bp || (ep->b_flags & B_INVAL) || | |
1427 | ep->b_vp == NULLVP) | |
1428 | continue; | |
1429 | if (VOP_BMAP(ep->b_vp, (daddr_t)0, &vp, (daddr_t)0)) | |
1430 | continue; | |
1431 | if (vp != ip->i_devvp) | |
1432 | continue; | |
1433 | /* look for overlap */ | |
1434 | if (ep->b_bcount == 0 || ep->b_blkno > last || | |
1435 | ep->b_blkno + btodb(ep->b_bcount) <= start) | |
1436 | continue; | |
1437 | vprint("Disk overlap", vp); | |
1438 | printf("\tstart %d, end %d overlap start %d, end %d\n", | |
1439 | start, last, ep->b_blkno, | |
1440 | ep->b_blkno + btodb(ep->b_bcount) - 1); | |
1441 | panic("Disk buffer overlap"); | |
1442 | } | |
1443 | } | |
1444 | #endif /* DIAGNOSTIC */ | |
1445 | vp = ip->i_devvp; | |
1446 | bp->b_dev = vp->v_rdev; | |
1447 | (*(vp->v_op->vop_strategy))(bp); | |
1448 | return (0); | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Print out the contents of an inode. | |
1453 | */ | |
1454 | ufs_print(vp) | |
1455 | struct vnode *vp; | |
1456 | { | |
1457 | register struct inode *ip = VTOI(vp); | |
1458 | ||
1459 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, | |
1460 | major(ip->i_dev), minor(ip->i_dev)); | |
1461 | #ifdef FIFO | |
1462 | if (vp->v_type == VFIFO) | |
1463 | fifo_printinfo(vp); | |
1464 | #endif /* FIFO */ | |
1465 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
1466 | if (ip->i_spare0 == 0) | |
1467 | return; | |
1468 | printf("\towner pid %d", ip->i_spare0); | |
1469 | if (ip->i_spare1) | |
1470 | printf(" waiting pid %d", ip->i_spare1); | |
1471 | printf("\n"); | |
1472 | } | |
1473 | ||
1474 | /* | |
1475 | * Read wrapper for special devices. | |
1476 | */ | |
1477 | ufsspec_read(vp, uio, ioflag, cred) | |
1478 | struct vnode *vp; | |
1479 | struct uio *uio; | |
1480 | int ioflag; | |
1481 | struct ucred *cred; | |
1482 | { | |
1483 | ||
1484 | /* | |
1485 | * Set access flag. | |
1486 | */ | |
1487 | VTOI(vp)->i_flag |= IACC; | |
1488 | return (spec_read(vp, uio, ioflag, cred)); | |
1489 | } | |
1490 | ||
1491 | /* | |
1492 | * Write wrapper for special devices. | |
1493 | */ | |
1494 | ufsspec_write(vp, uio, ioflag, cred) | |
1495 | struct vnode *vp; | |
1496 | struct uio *uio; | |
1497 | int ioflag; | |
1498 | struct ucred *cred; | |
1499 | { | |
1500 | ||
1501 | /* | |
1502 | * Set update and change flags. | |
1503 | */ | |
1504 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1505 | return (spec_write(vp, uio, ioflag, cred)); | |
1506 | } | |
1507 | ||
1508 | /* | |
1509 | * Close wrapper for special devices. | |
1510 | * | |
1511 | * Update the times on the inode then do device close. | |
1512 | */ | |
1513 | ufsspec_close(vp, fflag, cred, p) | |
1514 | struct vnode *vp; | |
1515 | int fflag; | |
1516 | struct ucred *cred; | |
1517 | struct proc *p; | |
1518 | { | |
1519 | register struct inode *ip = VTOI(vp); | |
1520 | ||
1521 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
1522 | ITIMES(ip, &time, &time); | |
1523 | return (spec_close(vp, fflag, cred, p)); | |
1524 | } | |
1525 | ||
1526 | #ifdef FIFO | |
1527 | /* | |
1528 | * Read wrapper for fifo's | |
1529 | */ | |
1530 | ufsfifo_read(vp, uio, ioflag, cred) | |
1531 | struct vnode *vp; | |
1532 | struct uio *uio; | |
1533 | int ioflag; | |
1534 | struct ucred *cred; | |
1535 | { | |
1536 | ||
1537 | /* | |
1538 | * Set access flag. | |
1539 | */ | |
1540 | VTOI(vp)->i_flag |= IACC; | |
1541 | return (fifo_read(vp, uio, ioflag, cred)); | |
1542 | } | |
1543 | ||
1544 | /* | |
1545 | * Write wrapper for fifo's. | |
1546 | */ | |
1547 | ufsfifo_write(vp, uio, ioflag, cred) | |
1548 | struct vnode *vp; | |
1549 | struct uio *uio; | |
1550 | int ioflag; | |
1551 | struct ucred *cred; | |
1552 | { | |
1553 | ||
1554 | /* | |
1555 | * Set update and change flags. | |
1556 | */ | |
1557 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1558 | return (fifo_write(vp, uio, ioflag, cred)); | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Close wrapper for fifo's. | |
1563 | * | |
1564 | * Update the times on the inode then do device close. | |
1565 | */ | |
1566 | ufsfifo_close(vp, fflag, cred, p) | |
1567 | struct vnode *vp; | |
1568 | int fflag; | |
1569 | struct ucred *cred; | |
1570 | struct proc *p; | |
1571 | { | |
1572 | register struct inode *ip = VTOI(vp); | |
1573 | ||
1574 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
1575 | ITIMES(ip, &time, &time); | |
1576 | return (fifo_close(vp, fflag, cred, p)); | |
1577 | } | |
1578 | #endif /* FIFO */ | |
1579 | ||
1580 | /* | |
1581 | * Allocate a new inode. | |
1582 | */ | |
1583 | maknode(mode, ndp, ipp) | |
1584 | int mode; | |
1585 | register struct nameidata *ndp; | |
1586 | struct inode **ipp; | |
1587 | { | |
1588 | register struct inode *ip; | |
1589 | struct inode *tip; | |
1590 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1591 | ino_t ipref; | |
1592 | int error; | |
1593 | ||
1594 | #ifdef DIANOSTIC | |
1595 | if ((ndp->ni_nameiop & HASBUF) == 0) | |
1596 | panic("maknode: no name"); | |
1597 | #endif | |
1598 | *ipp = 0; | |
1599 | if ((mode & IFMT) == 0) | |
1600 | mode |= IFREG; | |
1601 | if ((mode & IFMT) == IFDIR) | |
1602 | ipref = dirpref(pdir->i_fs); | |
1603 | else | |
1604 | ipref = pdir->i_number; | |
1605 | if (error = ialloc(pdir, ipref, mode, ndp->ni_cred, &tip)) { | |
1606 | free(ndp->ni_pnbuf, M_NAMEI); | |
1607 | iput(pdir); | |
1608 | return (error); | |
1609 | } | |
1610 | ip = tip; | |
1611 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1612 | ip->i_gid = pdir->i_gid; | |
1613 | #ifdef QUOTA | |
1614 | if ((error = getinoquota(ip)) || | |
1615 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1616 | free(ndp->ni_pnbuf, M_NAMEI); | |
1617 | ifree(ip, ip->i_number, mode); | |
1618 | iput(ip); | |
1619 | iput(pdir); | |
1620 | return (error); | |
1621 | } | |
1622 | #endif | |
1623 | ip->i_flag |= IACC|IUPD|ICHG; | |
1624 | ip->i_mode = mode; | |
1625 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1626 | ip->i_nlink = 1; | |
1627 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1628 | suser(ndp->ni_cred, NULL)) | |
1629 | ip->i_mode &= ~ISGID; | |
1630 | ||
1631 | /* | |
1632 | * Make sure inode goes to disk before directory entry. | |
1633 | */ | |
1634 | if (error = iupdat(ip, &time, &time, 1)) | |
1635 | goto bad; | |
1636 | if (error = direnter(ip, ndp)) | |
1637 | goto bad; | |
1638 | if ((ndp->ni_nameiop & SAVESTART) == 0) | |
1639 | FREE(ndp->ni_pnbuf, M_NAMEI); | |
1640 | iput(pdir); | |
1641 | *ipp = ip; | |
1642 | return (0); | |
1643 | ||
1644 | bad: | |
1645 | /* | |
1646 | * Write error occurred trying to update the inode | |
1647 | * or the directory so must deallocate the inode. | |
1648 | */ | |
1649 | free(ndp->ni_pnbuf, M_NAMEI); | |
1650 | iput(pdir); | |
1651 | ip->i_nlink = 0; | |
1652 | ip->i_flag |= ICHG; | |
1653 | iput(ip); | |
1654 | return (error); | |
1655 | } | |
1656 | ||
1657 | /* | |
1658 | * Advisory record locking support | |
1659 | */ | |
1660 | ufs_advlock(vp, id, op, fl, flags) | |
1661 | struct vnode *vp; | |
1662 | caddr_t id; | |
1663 | int op; | |
1664 | register struct flock *fl; | |
1665 | int flags; | |
1666 | { | |
1667 | register struct inode *ip = VTOI(vp); | |
1668 | register struct lockf *lock; | |
1669 | off_t start, end; | |
1670 | int error; | |
1671 | ||
1672 | /* | |
1673 | * Avoid the common case of unlocking when inode has no locks. | |
1674 | */ | |
1675 | if (ip->i_lockf == (struct lockf *)0) { | |
1676 | if (op != F_SETLK) { | |
1677 | fl->l_type = F_UNLCK; | |
1678 | return (0); | |
1679 | } | |
1680 | } | |
1681 | /* | |
1682 | * Convert the flock structure into a start and end. | |
1683 | */ | |
1684 | switch (fl->l_whence) { | |
1685 | ||
1686 | case SEEK_SET: | |
1687 | case SEEK_CUR: | |
1688 | /* | |
1689 | * Caller is responsible for adding any necessary offset | |
1690 | * when SEEK_CUR is used. | |
1691 | */ | |
1692 | start = fl->l_start; | |
1693 | break; | |
1694 | ||
1695 | case SEEK_END: | |
1696 | start = ip->i_size + fl->l_start; | |
1697 | break; | |
1698 | ||
1699 | default: | |
1700 | return (EINVAL); | |
1701 | } | |
1702 | if (start < 0) | |
1703 | return (EINVAL); | |
1704 | if (fl->l_len == 0) | |
1705 | end = -1; | |
1706 | else | |
1707 | end = start + fl->l_len - 1; | |
1708 | /* | |
1709 | * Create the lockf structure | |
1710 | */ | |
1711 | MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK); | |
1712 | lock->lf_start = start; | |
1713 | lock->lf_end = end; | |
1714 | lock->lf_id = id; | |
1715 | lock->lf_inode = ip; | |
1716 | lock->lf_type = fl->l_type; | |
1717 | lock->lf_next = (struct lockf *)0; | |
1718 | lock->lf_block = (struct lockf *)0; | |
1719 | lock->lf_flags = flags; | |
1720 | /* | |
1721 | * Do the requested operation. | |
1722 | */ | |
1723 | switch(op) { | |
1724 | case F_SETLK: | |
1725 | return (lf_setlock(lock)); | |
1726 | ||
1727 | case F_UNLCK: | |
1728 | error = lf_clearlock(lock); | |
1729 | FREE(lock, M_LOCKF); | |
1730 | return (error); | |
1731 | ||
1732 | case F_GETLK: | |
1733 | error = lf_getlock(lock, fl); | |
1734 | FREE(lock, M_LOCKF); | |
1735 | return (error); | |
1736 | ||
1737 | default: | |
1738 | free(lock, M_LOCKF); | |
1739 | return (EINVAL); | |
1740 | } | |
1741 | /* NOTREACHED */ | |
1742 | } | |
1743 | ||
1744 | /* | |
1745 | * Global vfs data structures for ufs | |
1746 | */ | |
1747 | struct vnodeops ufs_vnodeops = { | |
1748 | ufs_lookup, /* lookup */ | |
1749 | ufs_create, /* create */ | |
1750 | ufs_mknod, /* mknod */ | |
1751 | ufs_open, /* open */ | |
1752 | ufs_close, /* close */ | |
1753 | ufs_access, /* access */ | |
1754 | ufs_getattr, /* getattr */ | |
1755 | ufs_setattr, /* setattr */ | |
1756 | ufs_read, /* read */ | |
1757 | ufs_write, /* write */ | |
1758 | ufs_ioctl, /* ioctl */ | |
1759 | ufs_select, /* select */ | |
1760 | ufs_mmap, /* mmap */ | |
1761 | ufs_fsync, /* fsync */ | |
1762 | ufs_seek, /* seek */ | |
1763 | ufs_remove, /* remove */ | |
1764 | ufs_link, /* link */ | |
1765 | ufs_rename, /* rename */ | |
1766 | ufs_mkdir, /* mkdir */ | |
1767 | ufs_rmdir, /* rmdir */ | |
1768 | ufs_symlink, /* symlink */ | |
1769 | ufs_readdir, /* readdir */ | |
1770 | ufs_readlink, /* readlink */ | |
1771 | ufs_abortop, /* abortop */ | |
1772 | ufs_inactive, /* inactive */ | |
1773 | ufs_reclaim, /* reclaim */ | |
1774 | ufs_lock, /* lock */ | |
1775 | ufs_unlock, /* unlock */ | |
1776 | ufs_bmap, /* bmap */ | |
1777 | ufs_strategy, /* strategy */ | |
1778 | ufs_print, /* print */ | |
1779 | ufs_islocked, /* islocked */ | |
1780 | ufs_advlock, /* advlock */ | |
1781 | }; | |
1782 | ||
1783 | struct vnodeops spec_inodeops = { | |
1784 | spec_lookup, /* lookup */ | |
1785 | spec_create, /* create */ | |
1786 | spec_mknod, /* mknod */ | |
1787 | spec_open, /* open */ | |
1788 | ufsspec_close, /* close */ | |
1789 | ufs_access, /* access */ | |
1790 | ufs_getattr, /* getattr */ | |
1791 | ufs_setattr, /* setattr */ | |
1792 | ufsspec_read, /* read */ | |
1793 | ufsspec_write, /* write */ | |
1794 | spec_ioctl, /* ioctl */ | |
1795 | spec_select, /* select */ | |
1796 | spec_mmap, /* mmap */ | |
1797 | spec_fsync, /* fsync */ | |
1798 | spec_seek, /* seek */ | |
1799 | spec_remove, /* remove */ | |
1800 | spec_link, /* link */ | |
1801 | spec_rename, /* rename */ | |
1802 | spec_mkdir, /* mkdir */ | |
1803 | spec_rmdir, /* rmdir */ | |
1804 | spec_symlink, /* symlink */ | |
1805 | spec_readdir, /* readdir */ | |
1806 | spec_readlink, /* readlink */ | |
1807 | spec_abortop, /* abortop */ | |
1808 | ufs_inactive, /* inactive */ | |
1809 | ufs_reclaim, /* reclaim */ | |
1810 | ufs_lock, /* lock */ | |
1811 | ufs_unlock, /* unlock */ | |
1812 | spec_bmap, /* bmap */ | |
1813 | spec_strategy, /* strategy */ | |
1814 | ufs_print, /* print */ | |
1815 | ufs_islocked, /* islocked */ | |
1816 | spec_advlock, /* advlock */ | |
1817 | }; | |
1818 | ||
1819 | #ifdef FIFO | |
1820 | struct vnodeops fifo_inodeops = { | |
1821 | fifo_lookup, /* lookup */ | |
1822 | fifo_create, /* create */ | |
1823 | fifo_mknod, /* mknod */ | |
1824 | fifo_open, /* open */ | |
1825 | ufsfifo_close, /* close */ | |
1826 | ufs_access, /* access */ | |
1827 | ufs_getattr, /* getattr */ | |
1828 | ufs_setattr, /* setattr */ | |
1829 | ufsfifo_read, /* read */ | |
1830 | ufsfifo_write, /* write */ | |
1831 | fifo_ioctl, /* ioctl */ | |
1832 | fifo_select, /* select */ | |
1833 | fifo_mmap, /* mmap */ | |
1834 | fifo_fsync, /* fsync */ | |
1835 | fifo_seek, /* seek */ | |
1836 | fifo_remove, /* remove */ | |
1837 | fifo_link, /* link */ | |
1838 | fifo_rename, /* rename */ | |
1839 | fifo_mkdir, /* mkdir */ | |
1840 | fifo_rmdir, /* rmdir */ | |
1841 | fifo_symlink, /* symlink */ | |
1842 | fifo_readdir, /* readdir */ | |
1843 | fifo_readlink, /* readlink */ | |
1844 | fifo_abortop, /* abortop */ | |
1845 | ufs_inactive, /* inactive */ | |
1846 | ufs_reclaim, /* reclaim */ | |
1847 | ufs_lock, /* lock */ | |
1848 | ufs_unlock, /* unlock */ | |
1849 | fifo_bmap, /* bmap */ | |
1850 | fifo_strategy, /* strategy */ | |
1851 | ufs_print, /* print */ | |
1852 | ufs_islocked, /* islocked */ | |
1853 | fifo_advlock, /* advlock */ | |
1854 | }; | |
1855 | #endif /* FIFO */ | |
1856 | ||
1857 | enum vtype iftovt_tab[16] = { | |
1858 | VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON, | |
1859 | VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD, | |
1860 | }; | |
1861 | int vttoif_tab[9] = { | |
1862 | 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFIFO, IFMT, | |
1863 | }; |