Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
7188ac27 KM |
2 | * Copyright (c) 1982, 1986, 1989 Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
7188ac27 KM |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * | |
b440c2b9 | 17 | * @(#)ffs_vnops.c 7.18 (Berkeley) %G% |
da7c5cc6 | 18 | */ |
6459ebe0 | 19 | |
94368568 JB |
20 | #include "param.h" |
21 | #include "systm.h" | |
94368568 JB |
22 | #include "user.h" |
23 | #include "kernel.h" | |
24 | #include "file.h" | |
25 | #include "stat.h" | |
94368568 JB |
26 | #include "buf.h" |
27 | #include "proc.h" | |
94368568 JB |
28 | #include "uio.h" |
29 | #include "socket.h" | |
30 | #include "socketvar.h" | |
7188ac27 | 31 | #include "conf.h" |
94368568 | 32 | #include "mount.h" |
7188ac27 KM |
33 | #include "vnode.h" |
34 | #include "../ufs/inode.h" | |
35 | #include "../ufs/fs.h" | |
36 | #include "../ufs/quota.h" | |
3e78e260 | 37 | |
4f083fd7 | 38 | /* |
7188ac27 | 39 | * Global vfs data structures for ufs |
4f083fd7 | 40 | */ |
3e78e260 | 41 | |
7188ac27 KM |
42 | int ufs_lookup(), |
43 | ufs_create(), | |
44 | ufs_mknod(), | |
45 | ufs_open(), | |
46 | ufs_close(), | |
47 | ufs_access(), | |
48 | ufs_getattr(), | |
49 | ufs_setattr(), | |
50 | ufs_read(), | |
51 | ufs_write(), | |
52 | ufs_ioctl(), | |
53 | ufs_select(), | |
54 | ufs_mmap(), | |
55 | ufs_fsync(), | |
56 | ufs_seek(), | |
57 | ufs_remove(), | |
58 | ufs_link(), | |
59 | ufs_rename(), | |
60 | ufs_mkdir(), | |
61 | ufs_rmdir(), | |
62 | ufs_symlink(), | |
63 | ufs_readdir(), | |
64 | ufs_readlink(), | |
65 | ufs_abortop(), | |
66 | ufs_inactive(), | |
67 | ufs_lock(), | |
68 | ufs_unlock(), | |
69 | ufs_bmap(), | |
70 | ufs_strategy(); | |
71 | ||
72 | struct vnodeops ufs_vnodeops = { | |
73 | ufs_lookup, | |
74 | ufs_create, | |
75 | ufs_mknod, | |
76 | ufs_open, | |
77 | ufs_close, | |
78 | ufs_access, | |
79 | ufs_getattr, | |
80 | ufs_setattr, | |
81 | ufs_read, | |
82 | ufs_write, | |
83 | ufs_ioctl, | |
84 | ufs_select, | |
85 | ufs_mmap, | |
86 | ufs_fsync, | |
87 | ufs_seek, | |
88 | ufs_remove, | |
89 | ufs_link, | |
90 | ufs_rename, | |
91 | ufs_mkdir, | |
92 | ufs_rmdir, | |
93 | ufs_symlink, | |
94 | ufs_readdir, | |
95 | ufs_readlink, | |
96 | ufs_abortop, | |
97 | ufs_inactive, | |
98 | ufs_lock, | |
99 | ufs_unlock, | |
100 | ufs_bmap, | |
101 | ufs_strategy, | |
102 | }; | |
103 | ||
104 | enum vtype iftovt_tab[8] = { | |
105 | VNON, VCHR, VDIR, VBLK, VREG, VLNK, VSOCK, VBAD, | |
106 | }; | |
107 | int vttoif_tab[8] = { | |
108 | 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFMT, | |
109 | }; | |
3e78e260 | 110 | |
4f083fd7 | 111 | /* |
7188ac27 | 112 | * Create a regular file |
4f083fd7 | 113 | */ |
7188ac27 KM |
114 | ufs_create(ndp, vap) |
115 | struct nameidata *ndp; | |
116 | struct vattr *vap; | |
3e78e260 | 117 | { |
7188ac27 KM |
118 | struct inode *ip; |
119 | int error; | |
3e78e260 | 120 | |
7188ac27 KM |
121 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
122 | return (error); | |
123 | ndp->ni_vp = ITOV(ip); | |
124 | return (0); | |
3e78e260 BJ |
125 | } |
126 | ||
4f083fd7 | 127 | /* |
7188ac27 | 128 | * Mknod vnode call |
4f083fd7 | 129 | */ |
7188ac27 KM |
130 | /* ARGSUSED */ |
131 | ufs_mknod(ndp, vap, cred) | |
132 | struct nameidata *ndp; | |
133 | struct ucred *cred; | |
134 | struct vattr *vap; | |
3e78e260 | 135 | { |
7188ac27 KM |
136 | struct inode *ip; |
137 | int error; | |
3e78e260 | 138 | |
7188ac27 KM |
139 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
140 | return (error); | |
141 | if (vap->va_rdev) { | |
142 | /* | |
143 | * Want to be able to use this to make badblock | |
144 | * inodes, so don't truncate the dev number. | |
145 | */ | |
146 | ITOV(ip)->v_rdev = ip->i_rdev = vap->va_rdev; | |
147 | ip->i_flag |= IACC|IUPD|ICHG; | |
148 | } | |
7188ac27 KM |
149 | /* |
150 | * Remove inode so that it will be reloaded by iget and | |
151 | * checked to see if it is an alias of an existing entry | |
152 | * in the inode cache. | |
153 | */ | |
154 | remque(ip); | |
155 | ip->i_forw = ip; | |
156 | ip->i_back = ip; | |
9ed9b473 KM |
157 | ITOV(ip)->v_type = VNON; |
158 | iput(ip); | |
7188ac27 | 159 | return (0); |
3e78e260 BJ |
160 | } |
161 | ||
162 | /* | |
7188ac27 KM |
163 | * Open called. |
164 | * | |
165 | * Nothing to do. | |
3e78e260 | 166 | */ |
7188ac27 KM |
167 | /* ARGSUSED */ |
168 | ufs_open(vp, mode, cred) | |
169 | struct vnode *vp; | |
170 | int mode; | |
171 | struct ucred *cred; | |
3e78e260 | 172 | { |
3e78e260 | 173 | |
7188ac27 | 174 | return (0); |
3e78e260 BJ |
175 | } |
176 | ||
177 | /* | |
7188ac27 KM |
178 | * Close called |
179 | * | |
180 | * Update the times on the inode. | |
3e78e260 | 181 | */ |
7188ac27 KM |
182 | /* ARGSUSED */ |
183 | ufs_close(vp, fflag, cred) | |
184 | struct vnode *vp; | |
185 | int fflag; | |
186 | struct ucred *cred; | |
3e78e260 | 187 | { |
7188ac27 | 188 | register struct inode *ip = VTOI(vp); |
3e78e260 | 189 | |
7188ac27 KM |
190 | if (vp->v_count > 1 && !(ip->i_flag & ILOCKED)) |
191 | ITIMES(ip, &time, &time); | |
192 | return (0); | |
3e78e260 BJ |
193 | } |
194 | ||
7188ac27 KM |
195 | ufs_access(vp, mode, cred) |
196 | struct vnode *vp; | |
197 | int mode; | |
198 | struct ucred *cred; | |
3e78e260 | 199 | { |
3e78e260 | 200 | |
7188ac27 | 201 | return (iaccess(VTOI(vp), mode, cred)); |
3e78e260 BJ |
202 | } |
203 | ||
7188ac27 KM |
204 | /* ARGSUSED */ |
205 | ufs_getattr(vp, vap, cred) | |
206 | struct vnode *vp; | |
207 | register struct vattr *vap; | |
208 | struct ucred *cred; | |
3e78e260 | 209 | { |
7188ac27 | 210 | register struct inode *ip = VTOI(vp); |
3e78e260 | 211 | |
7188ac27 | 212 | ITIMES(ip, &time, &time); |
3e78e260 | 213 | /* |
7188ac27 | 214 | * Copy from inode table |
3e78e260 | 215 | */ |
7188ac27 KM |
216 | vap->va_fsid = ip->i_dev; |
217 | vap->va_fileid = ip->i_number; | |
218 | vap->va_mode = ip->i_mode & ~IFMT; | |
219 | vap->va_nlink = ip->i_nlink; | |
220 | vap->va_uid = ip->i_uid; | |
221 | vap->va_gid = ip->i_gid; | |
222 | vap->va_rdev = (dev_t)ip->i_rdev; | |
223 | vap->va_size = ip->i_ic.ic_size.val[0]; | |
224 | vap->va_size1 = ip->i_ic.ic_size.val[1]; | |
225 | vap->va_atime.tv_sec = ip->i_atime; | |
6ef53d70 | 226 | vap->va_atime.tv_usec = 0; |
7188ac27 | 227 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 228 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 229 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 230 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
231 | vap->va_flags = ip->i_flags; |
232 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
233 | /* this doesn't belong here */ |
234 | if (vp->v_type == VBLK) | |
235 | vap->va_blocksize = BLKDEV_IOSIZE; | |
236 | else if (vp->v_type == VCHR) | |
237 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 238 | else |
7188ac27 | 239 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 240 | vap->va_bytes = dbtob(ip->i_blocks); |
7188ac27 KM |
241 | vap->va_bytes1 = -1; |
242 | vap->va_type = vp->v_type; | |
243 | return (0); | |
3e78e260 BJ |
244 | } |
245 | ||
246 | /* | |
7188ac27 | 247 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 248 | */ |
7188ac27 KM |
249 | ufs_setattr(vp, vap, cred) |
250 | register struct vnode *vp; | |
251 | register struct vattr *vap; | |
252 | register struct ucred *cred; | |
3e78e260 | 253 | { |
7188ac27 KM |
254 | register struct inode *ip = VTOI(vp); |
255 | int error = 0; | |
b4d1aee9 | 256 | |
7188ac27 KM |
257 | /* |
258 | * Check for unsetable attributes. | |
259 | */ | |
260 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
261 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
262 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 263 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 264 | return (EINVAL); |
b4d1aee9 | 265 | } |
7188ac27 KM |
266 | /* |
267 | * Go through the fields and update iff not VNOVAL. | |
268 | */ | |
269 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
270 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
271 | return (error); | |
272 | if (vap->va_size != VNOVAL) { | |
273 | if (vp->v_type == VDIR) | |
274 | return (EISDIR); | |
7188ac27 KM |
275 | if (error = itrunc(ip, vap->va_size)) |
276 | return (error); | |
3e78e260 | 277 | } |
7188ac27 | 278 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
279 | if (cred->cr_uid != ip->i_uid && |
280 | (error = suser(cred, &u.u_acflag))) | |
281 | return (error); | |
7188ac27 KM |
282 | if (vap->va_atime.tv_sec != VNOVAL) |
283 | ip->i_flag |= IACC; | |
284 | if (vap->va_mtime.tv_sec != VNOVAL) | |
285 | ip->i_flag |= IUPD; | |
286 | ip->i_flag |= ICHG; | |
287 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
288 | return (error); | |
5485e062 | 289 | } |
7188ac27 KM |
290 | if (vap->va_mode != (u_short)VNOVAL) |
291 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
292 | if (vap->va_flags != VNOVAL) { |
293 | if (cred->cr_uid != ip->i_uid && | |
294 | (error = suser(cred, &u.u_acflag))) | |
295 | return (error); | |
296 | if (cred->cr_uid == 0) { | |
297 | ip->i_flags = vap->va_flags; | |
298 | } else { | |
299 | ip->i_flags &= 0xffff0000; | |
300 | ip->i_flags |= (vap->va_flags & 0xffff); | |
301 | } | |
302 | ip->i_flag |= ICHG; | |
303 | } | |
7188ac27 | 304 | return (error); |
528f664c SL |
305 | } |
306 | ||
4f083fd7 SL |
307 | /* |
308 | * Change the mode on a file. | |
309 | * Inode must be locked before calling. | |
310 | */ | |
7188ac27 KM |
311 | chmod1(vp, mode, cred) |
312 | register struct vnode *vp; | |
528f664c | 313 | register int mode; |
7188ac27 | 314 | struct ucred *cred; |
528f664c | 315 | { |
7188ac27 | 316 | register struct inode *ip = VTOI(vp); |
de412887 | 317 | int error; |
197da11b | 318 | |
de412887 KM |
319 | if (cred->cr_uid != ip->i_uid && |
320 | (error = suser(cred, &u.u_acflag))) | |
321 | return (error); | |
3e78e260 | 322 | ip->i_mode &= ~07777; |
7188ac27 KM |
323 | if (cred->cr_uid) { |
324 | if (vp->v_type != VDIR) | |
47af7174 | 325 | mode &= ~ISVTX; |
7188ac27 | 326 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 327 | mode &= ~ISGID; |
f94ceb3b | 328 | } |
7188ac27 | 329 | ip->i_mode |= mode & 07777; |
3e78e260 | 330 | ip->i_flag |= ICHG; |
7188ac27 KM |
331 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
332 | xrele(vp); | |
47af7174 | 333 | return (0); |
5485e062 BJ |
334 | } |
335 | ||
528f664c SL |
336 | /* |
337 | * Perform chown operation on inode ip; | |
338 | * inode must be locked prior to call. | |
339 | */ | |
7188ac27 KM |
340 | chown1(vp, uid, gid, cred) |
341 | register struct vnode *vp; | |
342 | uid_t uid; | |
343 | gid_t gid; | |
344 | struct ucred *cred; | |
528f664c | 345 | { |
7188ac27 | 346 | register struct inode *ip = VTOI(vp); |
528f664c SL |
347 | #ifdef QUOTA |
348 | register long change; | |
bb1b75f4 | 349 | #endif |
7188ac27 | 350 | int error; |
528f664c | 351 | |
7188ac27 | 352 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 353 | uid = ip->i_uid; |
7188ac27 | 354 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 355 | gid = ip->i_gid; |
18b0bce6 KB |
356 | /* |
357 | * If we don't own the file, are trying to change the owner | |
358 | * of the file, or are not a member of the target group, | |
359 | * the caller must be superuser or the call fails. | |
360 | */ | |
7188ac27 KM |
361 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
362 | !groupmember((gid_t)gid, cred)) && | |
363 | (error = suser(cred, &u.u_acflag))) | |
364 | return (error); | |
bb1b75f4 | 365 | #ifdef QUOTA |
3809bf69 | 366 | if (ip->i_uid == uid) /* this just speeds things a little */ |
0a77f278 | 367 | change = 0; |
2e073567 SL |
368 | else |
369 | change = ip->i_blocks; | |
370 | (void) chkdq(ip, -change, 1); | |
371 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 372 | dqrele(ip->i_dquot); |
f94ceb3b | 373 | #endif |
b440c2b9 KM |
374 | if (ip->i_uid != uid && cred->cr_uid != 0) |
375 | ip->i_mode &= ~ISUID; | |
376 | if (ip->i_gid != gid && cred->cr_uid != 0) | |
377 | ip->i_mode &= ~ISGID; | |
bb1b75f4 SL |
378 | ip->i_uid = uid; |
379 | ip->i_gid = gid; | |
3e78e260 | 380 | ip->i_flag |= ICHG; |
528f664c | 381 | #ifdef QUOTA |
0a77f278 | 382 | ip->i_dquot = inoquota(ip); |
2e073567 | 383 | (void) chkdq(ip, change, 1); |
8011f5df | 384 | (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1); |
2e073567 SL |
385 | return (u.u_error); /* should == 0 ALWAYS !! */ |
386 | #else | |
bb1b75f4 | 387 | return (0); |
2e073567 | 388 | #endif |
d67a03eb BJ |
389 | } |
390 | ||
7188ac27 KM |
391 | /* ARGSUSED */ |
392 | ufs_ioctl(vp, com, data, fflag, cred) | |
393 | struct vnode *vp; | |
394 | int com; | |
395 | caddr_t data; | |
396 | int fflag; | |
397 | struct ucred *cred; | |
bb1b75f4 | 398 | { |
bb1b75f4 | 399 | |
7188ac27 KM |
400 | printf("ufs_ioctl called with type %d\n", vp->v_type); |
401 | return (ENOTTY); | |
402 | } | |
403 | ||
404 | /* ARGSUSED */ | |
405 | ufs_select(vp, which, cred) | |
406 | struct vnode *vp; | |
407 | int which; | |
408 | struct ucred *cred; | |
409 | { | |
410 | ||
411 | printf("ufs_select called with type %d\n", vp->v_type); | |
412 | return (1); /* XXX */ | |
bb1b75f4 | 413 | } |
d67a03eb | 414 | |
4f083fd7 | 415 | /* |
7188ac27 KM |
416 | * Mmap a file |
417 | * | |
418 | * NB Currently unsupported. | |
4f083fd7 | 419 | */ |
7188ac27 KM |
420 | /* ARGSUSED */ |
421 | ufs_mmap(vp, fflags, cred) | |
422 | struct vnode *vp; | |
423 | int fflags; | |
424 | struct ucred *cred; | |
d67a03eb | 425 | { |
d67a03eb | 426 | |
7188ac27 | 427 | return (EINVAL); |
d67a03eb | 428 | } |
64d3a787 | 429 | |
4f083fd7 | 430 | /* |
7188ac27 | 431 | * Synch an open file. |
4f083fd7 | 432 | */ |
7188ac27 KM |
433 | /* ARGSUSED */ |
434 | ufs_fsync(vp, fflags, cred) | |
435 | struct vnode *vp; | |
436 | int fflags; | |
437 | struct ucred *cred; | |
528f664c | 438 | { |
7188ac27 KM |
439 | register struct inode *ip = VTOI(vp); |
440 | int error; | |
441 | ||
442 | ILOCK(ip); | |
443 | if (fflags&FWRITE) | |
444 | ip->i_flag |= ICHG; | |
445 | error = syncip(ip); | |
446 | IUNLOCK(ip); | |
447 | return (error); | |
528f664c SL |
448 | } |
449 | ||
4f083fd7 | 450 | /* |
7188ac27 KM |
451 | * Seek on a file |
452 | * | |
453 | * Nothing to do, so just return. | |
4f083fd7 | 454 | */ |
7188ac27 KM |
455 | /* ARGSUSED */ |
456 | ufs_seek(vp, oldoff, newoff, cred) | |
457 | struct vnode *vp; | |
458 | off_t oldoff, newoff; | |
459 | struct ucred *cred; | |
528f664c | 460 | { |
7188ac27 KM |
461 | |
462 | return (0); | |
463 | } | |
464 | ||
465 | /* | |
466 | * ufs remove | |
467 | * Hard to avoid races here, especially | |
468 | * in unlinking directories. | |
469 | */ | |
470 | ufs_remove(ndp) | |
471 | struct nameidata *ndp; | |
472 | { | |
473 | register struct inode *ip, *dp; | |
474 | int error; | |
475 | ||
476 | ip = VTOI(ndp->ni_vp); | |
477 | dp = VTOI(ndp->ni_dvp); | |
478 | error = dirremove(ndp); | |
479 | if (!error) { | |
480 | ip->i_nlink--; | |
481 | ip->i_flag |= ICHG; | |
528f664c | 482 | } |
7188ac27 KM |
483 | if (dp == ip) |
484 | vrele(ITOV(ip)); | |
485 | else | |
486 | iput(ip); | |
487 | iput(dp); | |
488 | return (error); | |
4f083fd7 SL |
489 | } |
490 | ||
491 | /* | |
7188ac27 | 492 | * link vnode call |
4f083fd7 | 493 | */ |
7188ac27 KM |
494 | ufs_link(vp, ndp) |
495 | register struct vnode *vp; | |
496 | register struct nameidata *ndp; | |
4f083fd7 | 497 | { |
7188ac27 KM |
498 | register struct inode *ip = VTOI(vp); |
499 | int error; | |
4f083fd7 | 500 | |
7188ac27 KM |
501 | if (ndp->ni_dvp != vp) |
502 | ILOCK(ip); | |
503 | if (ip->i_nlink == LINK_MAX - 1) { | |
504 | error = EMLINK; | |
505 | goto out; | |
506 | } | |
507 | ip->i_nlink++; | |
508 | ip->i_flag |= ICHG; | |
509 | error = iupdat(ip, &time, &time, 1); | |
510 | if (!error) | |
511 | error = direnter(ip, ndp); | |
512 | out: | |
513 | if (ndp->ni_dvp != vp) | |
514 | IUNLOCK(ip); | |
515 | if (error) { | |
516 | ip->i_nlink--; | |
82252d2b | 517 | ip->i_flag |= ICHG; |
7188ac27 KM |
518 | } |
519 | return (error); | |
528f664c SL |
520 | } |
521 | ||
4f083fd7 SL |
522 | /* |
523 | * Rename system call. | |
524 | * rename("foo", "bar"); | |
525 | * is essentially | |
526 | * unlink("bar"); | |
527 | * link("foo", "bar"); | |
528 | * unlink("foo"); | |
529 | * but ``atomically''. Can't do full commit without saving state in the | |
530 | * inode on disk which isn't feasible at this time. Best we can do is | |
531 | * always guarantee the target exists. | |
532 | * | |
533 | * Basic algorithm is: | |
534 | * | |
535 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 536 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
537 | * from underneath us while we work (it may be truncated by |
538 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
539 | * 2) Link source to destination. If destination already exists, |
540 | * delete it first. | |
68f21562 KM |
541 | * 3) Unlink source reference to inode if still around. If a |
542 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
543 | * is different from the source, patch the ".." entry in the |
544 | * directory. | |
4f083fd7 | 545 | */ |
7188ac27 KM |
546 | ufs_rename(fndp, tndp) |
547 | register struct nameidata *fndp, *tndp; | |
528f664c | 548 | { |
4f083fd7 | 549 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
550 | struct dirtemplate dirbuf; |
551 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 552 | int error = 0; |
4f083fd7 | 553 | |
7188ac27 KM |
554 | dp = VTOI(fndp->ni_dvp); |
555 | ip = VTOI(fndp->ni_vp); | |
556 | ILOCK(ip); | |
4f083fd7 | 557 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 558 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 559 | |
4f083fd7 | 560 | /* |
046f18d1 | 561 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 562 | */ |
7188ac27 KM |
563 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
564 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
565 | IUNLOCK(ip); | |
566 | ufs_abortop(fndp); | |
567 | ufs_abortop(tndp); | |
568 | return (EINVAL); | |
4f083fd7 | 569 | } |
68f21562 | 570 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
571 | oldparent = dp->i_number; |
572 | doingdirectory++; | |
573 | } | |
7188ac27 | 574 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
575 | |
576 | /* | |
577 | * 1) Bump link count while we're moving stuff | |
578 | * around. If we crash somewhere before | |
579 | * completing our work, the link count | |
580 | * may be wrong, but correctable. | |
581 | */ | |
582 | ip->i_nlink++; | |
583 | ip->i_flag |= ICHG; | |
7188ac27 | 584 | error = iupdat(ip, &time, &time, 1); |
a388503d | 585 | IUNLOCK(ip); |
4f083fd7 SL |
586 | |
587 | /* | |
588 | * When the target exists, both the directory | |
7188ac27 | 589 | * and target vnodes are returned locked. |
4f083fd7 | 590 | */ |
7188ac27 KM |
591 | dp = VTOI(tndp->ni_dvp); |
592 | xp = NULL; | |
593 | if (tndp->ni_vp) | |
594 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
595 | /* |
596 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
597 | * parent) then the source directory must not be in the |
598 | * directory heirarchy above the target, as this would | |
599 | * orphan everything below the source directory. Also | |
600 | * the user must have write permission in the source so | |
601 | * as to be able to change "..". We must repeat the call | |
602 | * to namei, as the parent directory is unlocked by the | |
603 | * call to checkpath(). | |
046f18d1 | 604 | */ |
68f21562 KM |
605 | if (oldparent != dp->i_number) |
606 | newparent = dp->i_number; | |
607 | if (doingdirectory && newparent) { | |
7188ac27 | 608 | if (error = iaccess(ip, IWRITE, tndp->ni_cred)) |
81552f0f | 609 | goto bad; |
7188ac27 | 610 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 611 | do { |
7188ac27 | 612 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 613 | if (xp != NULL) |
79cf21e2 | 614 | iput(xp); |
7188ac27 | 615 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 616 | goto out; |
7188ac27 | 617 | if (error = namei(tndp)) |
81552f0f | 618 | goto out; |
7188ac27 KM |
619 | xp = NULL; |
620 | if (tndp->ni_vp) | |
621 | xp = VTOI(tndp->ni_vp); | |
622 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 623 | } |
4f083fd7 SL |
624 | /* |
625 | * 2) If target doesn't exist, link the target | |
626 | * to the source and unlink the source. | |
627 | * Otherwise, rewrite the target directory | |
628 | * entry to reference the source inode and | |
629 | * expunge the original entry's existence. | |
630 | */ | |
4f083fd7 | 631 | if (xp == NULL) { |
7188ac27 KM |
632 | if (dp->i_dev != ip->i_dev) |
633 | panic("rename: EXDEV"); | |
4f083fd7 | 634 | /* |
68f21562 KM |
635 | * Account for ".." in new directory. |
636 | * When source and destination have the same | |
637 | * parent we don't fool with the link count. | |
4f083fd7 | 638 | */ |
68f21562 | 639 | if (doingdirectory && newparent) { |
4f083fd7 SL |
640 | dp->i_nlink++; |
641 | dp->i_flag |= ICHG; | |
7188ac27 | 642 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 643 | } |
7188ac27 | 644 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
645 | goto out; |
646 | } else { | |
7188ac27 KM |
647 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
648 | panic("rename: EXDEV"); | |
e69c3c9c SL |
649 | /* |
650 | * Short circuit rename(foo, foo). | |
651 | */ | |
652 | if (xp->i_number == ip->i_number) | |
7188ac27 | 653 | panic("rename: same file"); |
80cee150 JB |
654 | /* |
655 | * If the parent directory is "sticky", then the user must | |
656 | * own the parent directory, or the destination of the rename, | |
657 | * otherwise the destination may not be changed (except by | |
658 | * root). This implements append-only directories. | |
659 | */ | |
7188ac27 KM |
660 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
661 | tndp->ni_cred->cr_uid != dp->i_uid && | |
662 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
663 | error = EPERM; |
664 | goto bad; | |
665 | } | |
4f083fd7 | 666 | /* |
a5390dce SL |
667 | * Target must be empty if a directory |
668 | * and have no links to it. | |
4f083fd7 SL |
669 | * Also, insure source and target are |
670 | * compatible (both directories, or both | |
671 | * not directories). | |
672 | */ | |
673 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
674 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
675 | xp->i_nlink > 2) { | |
a5390dce | 676 | error = ENOTEMPTY; |
4f083fd7 SL |
677 | goto bad; |
678 | } | |
679 | if (!doingdirectory) { | |
a5390dce | 680 | error = ENOTDIR; |
4f083fd7 SL |
681 | goto bad; |
682 | } | |
7188ac27 | 683 | cache_purge(ITOV(dp)); |
4f083fd7 | 684 | } else if (doingdirectory) { |
a5390dce | 685 | error = EISDIR; |
4f083fd7 SL |
686 | goto bad; |
687 | } | |
7188ac27 KM |
688 | if (error = dirrewrite(dp, ip, tndp)) |
689 | goto bad; | |
690 | vput(ITOV(dp)); | |
4f083fd7 | 691 | /* |
a5390dce SL |
692 | * Adjust the link count of the target to |
693 | * reflect the dirrewrite above. If this is | |
694 | * a directory it is empty and there are | |
695 | * no links to it, so we can squash the inode and | |
696 | * any space associated with it. We disallowed | |
697 | * renaming over top of a directory with links to | |
68f21562 KM |
698 | * it above, as the remaining link would point to |
699 | * a directory without "." or ".." entries. | |
4f083fd7 | 700 | */ |
a5390dce | 701 | xp->i_nlink--; |
4f083fd7 | 702 | if (doingdirectory) { |
a5390dce SL |
703 | if (--xp->i_nlink != 0) |
704 | panic("rename: linked directory"); | |
7188ac27 | 705 | error = itrunc(xp, (u_long)0); |
a5390dce | 706 | } |
4f083fd7 | 707 | xp->i_flag |= ICHG; |
88d931ba | 708 | iput(xp); |
31db12cb | 709 | xp = NULL; |
4f083fd7 SL |
710 | } |
711 | ||
712 | /* | |
713 | * 3) Unlink the source. | |
714 | */ | |
7188ac27 KM |
715 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
716 | (void)namei(fndp); | |
717 | if (fndp->ni_vp != NULL) { | |
718 | xp = VTOI(fndp->ni_vp); | |
719 | dp = VTOI(fndp->ni_dvp); | |
720 | } else { | |
79cf21e2 KM |
721 | if (fndp->ni_dvp != NULL) |
722 | vput(fndp->ni_dvp); | |
7188ac27 | 723 | xp = NULL; |
4f1a9037 | 724 | dp = NULL; |
7188ac27 | 725 | } |
4f083fd7 | 726 | /* |
7188ac27 | 727 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
728 | * changed while the new name has been entered. If the source is |
729 | * a file then the entry may have been unlinked or renamed. In | |
730 | * either case there is no further work to be done. If the source | |
731 | * is a directory then it cannot have been rmdir'ed; its link | |
732 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 733 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 734 | * rename. |
4f083fd7 | 735 | */ |
4f1a9037 | 736 | if (xp != ip) { |
68f21562 | 737 | if (doingdirectory) |
4f1a9037 | 738 | panic("rename: lost dir entry"); |
68f21562 | 739 | } else { |
4f083fd7 | 740 | /* |
68f21562 KM |
741 | * If the source is a directory with a |
742 | * new parent, the link count of the old | |
743 | * parent directory must be decremented | |
744 | * and ".." set to point to the new parent. | |
4f083fd7 | 745 | */ |
68f21562 | 746 | if (doingdirectory && newparent) { |
4f083fd7 SL |
747 | dp->i_nlink--; |
748 | dp->i_flag |= ICHG; | |
68f21562 | 749 | error = rdwri(UIO_READ, xp, (caddr_t)&dirbuf, |
7188ac27 | 750 | sizeof (struct dirtemplate), (off_t)0, |
93e273b9 | 751 | UIO_SYSSPACE, tndp->ni_cred, (int *)0); |
68f21562 KM |
752 | if (error == 0) { |
753 | if (dirbuf.dotdot_namlen != 2 || | |
754 | dirbuf.dotdot_name[0] != '.' || | |
755 | dirbuf.dotdot_name[1] != '.') { | |
756 | printf("rename: mangled dir\n"); | |
757 | } else { | |
758 | dirbuf.dotdot_ino = newparent; | |
759 | (void) rdwri(UIO_WRITE, xp, | |
760 | (caddr_t)&dirbuf, | |
761 | sizeof (struct dirtemplate), | |
93e273b9 | 762 | (off_t)0, UIO_SYSSPACE, |
7188ac27 KM |
763 | tndp->ni_cred, (int *)0); |
764 | cache_purge(ITOV(dp)); | |
68f21562 KM |
765 | } |
766 | } | |
4f083fd7 | 767 | } |
7188ac27 KM |
768 | error = dirremove(fndp); |
769 | if (!error) { | |
68f21562 KM |
770 | xp->i_nlink--; |
771 | xp->i_flag |= ICHG; | |
4f083fd7 | 772 | } |
68f21562 | 773 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 774 | } |
4f083fd7 | 775 | if (dp) |
7188ac27 | 776 | vput(ITOV(dp)); |
68f21562 | 777 | if (xp) |
7188ac27 KM |
778 | vput(ITOV(xp)); |
779 | vrele(ITOV(ip)); | |
780 | return (error); | |
a5390dce | 781 | |
4f083fd7 | 782 | bad: |
4f083fd7 | 783 | if (xp) |
7188ac27 KM |
784 | vput(ITOV(xp)); |
785 | vput(ITOV(dp)); | |
4f083fd7 SL |
786 | out: |
787 | ip->i_nlink--; | |
788 | ip->i_flag |= ICHG; | |
7188ac27 KM |
789 | vrele(ITOV(ip)); |
790 | return (error); | |
64d3a787 | 791 | } |
88a7a62a SL |
792 | |
793 | /* | |
794 | * A virgin directory (no blushing please). | |
795 | */ | |
796 | struct dirtemplate mastertemplate = { | |
797 | 0, 12, 1, ".", | |
798 | 0, DIRBLKSIZ - 12, 2, ".." | |
799 | }; | |
800 | ||
801 | /* | |
802 | * Mkdir system call | |
803 | */ | |
7188ac27 KM |
804 | ufs_mkdir(ndp, vap) |
805 | struct nameidata *ndp; | |
806 | struct vattr *vap; | |
88a7a62a | 807 | { |
88a7a62a | 808 | register struct inode *ip, *dp; |
7188ac27 KM |
809 | struct inode *tip; |
810 | struct vnode *dvp; | |
88a7a62a | 811 | struct dirtemplate dirtemplate; |
7188ac27 KM |
812 | int error; |
813 | int dmode; | |
814 | ||
815 | dvp = ndp->ni_dvp; | |
816 | dp = VTOI(dvp); | |
817 | dmode = vap->va_mode&0777; | |
818 | dmode |= IFDIR; | |
88a7a62a SL |
819 | /* |
820 | * Must simulate part of maknode here | |
821 | * in order to acquire the inode, but | |
822 | * not have it entered in the parent | |
823 | * directory. The entry is made later | |
824 | * after writing "." and ".." entries out. | |
825 | */ | |
7188ac27 KM |
826 | error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip); |
827 | if (error) { | |
88a7a62a | 828 | iput(dp); |
7188ac27 | 829 | return (error); |
88a7a62a | 830 | } |
7188ac27 | 831 | ip = tip; |
88a7a62a SL |
832 | #ifdef QUOTA |
833 | if (ip->i_dquot != NODQUOT) | |
834 | panic("mkdir: dquot"); | |
835 | #endif | |
836 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
837 | ip->i_mode = dmode; |
838 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 839 | ip->i_nlink = 2; |
7188ac27 | 840 | ip->i_uid = ndp->ni_cred->cr_uid; |
88a7a62a SL |
841 | ip->i_gid = dp->i_gid; |
842 | #ifdef QUOTA | |
843 | ip->i_dquot = inoquota(ip); | |
844 | #endif | |
7188ac27 | 845 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
846 | |
847 | /* | |
848 | * Bump link count in parent directory | |
849 | * to reflect work done below. Should | |
850 | * be done before reference is created | |
851 | * so reparation is possible if we crash. | |
852 | */ | |
853 | dp->i_nlink++; | |
854 | dp->i_flag |= ICHG; | |
7188ac27 | 855 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
856 | |
857 | /* | |
858 | * Initialize directory with "." | |
859 | * and ".." from static template. | |
860 | */ | |
861 | dirtemplate = mastertemplate; | |
862 | dirtemplate.dot_ino = ip->i_number; | |
863 | dirtemplate.dotdot_ino = dp->i_number; | |
7188ac27 KM |
864 | error = rdwri(UIO_WRITE, ip, (caddr_t)&dirtemplate, |
865 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, | |
866 | ndp->ni_cred, (int *)0); | |
867 | if (error) { | |
88a7a62a SL |
868 | dp->i_nlink--; |
869 | dp->i_flag |= ICHG; | |
870 | goto bad; | |
871 | } | |
7188ac27 KM |
872 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
873 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
874 | else |
875 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
876 | /* |
877 | * Directory all set up, now | |
878 | * install the entry for it in | |
879 | * the parent directory. | |
880 | */ | |
7188ac27 | 881 | error = direnter(ip, ndp); |
88a7a62a | 882 | dp = NULL; |
7188ac27 | 883 | if (error) { |
715baff1 | 884 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
885 | error = namei(ndp); |
886 | if (!error) { | |
887 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
888 | dp->i_nlink--; |
889 | dp->i_flag |= ICHG; | |
890 | } | |
891 | } | |
892 | bad: | |
893 | /* | |
894 | * No need to do an explicit itrunc here, | |
7188ac27 | 895 | * vrele will do this for us because we set |
88a7a62a SL |
896 | * the link count to 0. |
897 | */ | |
7188ac27 | 898 | if (error) { |
88a7a62a SL |
899 | ip->i_nlink = 0; |
900 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
901 | iput(ip); |
902 | } else | |
903 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
904 | if (dp) |
905 | iput(dp); | |
7188ac27 | 906 | return (error); |
88a7a62a SL |
907 | } |
908 | ||
909 | /* | |
910 | * Rmdir system call. | |
911 | */ | |
7188ac27 KM |
912 | ufs_rmdir(ndp) |
913 | register struct nameidata *ndp; | |
88a7a62a | 914 | { |
88a7a62a | 915 | register struct inode *ip, *dp; |
7188ac27 KM |
916 | int error = 0; |
917 | ||
918 | ip = VTOI(ndp->ni_vp); | |
919 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
920 | /* |
921 | * No rmdir "." please. | |
922 | */ | |
923 | if (dp == ip) { | |
7188ac27 | 924 | vrele(ITOV(dp)); |
88a7a62a | 925 | iput(ip); |
7188ac27 | 926 | return (EINVAL); |
88a7a62a SL |
927 | } |
928 | /* | |
929 | * Verify the directory is empty (and valid). | |
930 | * (Rmdir ".." won't be valid since | |
931 | * ".." will contain a reference to | |
932 | * the current directory and thus be | |
933 | * non-empty.) | |
934 | */ | |
7188ac27 KM |
935 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
936 | error = ENOTEMPTY; | |
88a7a62a SL |
937 | goto out; |
938 | } | |
939 | /* | |
940 | * Delete reference to directory before purging | |
941 | * inode. If we crash in between, the directory | |
942 | * will be reattached to lost+found, | |
943 | */ | |
7188ac27 | 944 | if (error = dirremove(ndp)) |
88a7a62a SL |
945 | goto out; |
946 | dp->i_nlink--; | |
947 | dp->i_flag |= ICHG; | |
7188ac27 | 948 | cache_purge(ITOV(dp)); |
88a7a62a | 949 | iput(dp); |
7188ac27 | 950 | ndp->ni_dvp = NULL; |
88a7a62a SL |
951 | /* |
952 | * Truncate inode. The only stuff left | |
953 | * in the directory is "." and "..". The | |
954 | * "." reference is inconsequential since | |
955 | * we're quashing it. The ".." reference | |
956 | * has already been adjusted above. We've | |
957 | * removed the "." reference and the reference | |
958 | * in the parent directory, but there may be | |
959 | * other hard links so decrement by 2 and | |
960 | * worry about them later. | |
961 | */ | |
962 | ip->i_nlink -= 2; | |
7188ac27 KM |
963 | error = itrunc(ip, (u_long)0); |
964 | cache_purge(ITOV(ip)); | |
88a7a62a | 965 | out: |
7188ac27 | 966 | if (ndp->ni_dvp) |
88a7a62a SL |
967 | iput(dp); |
968 | iput(ip); | |
7188ac27 | 969 | return (error); |
88a7a62a SL |
970 | } |
971 | ||
7188ac27 KM |
972 | /* |
973 | * symlink -- make a symbolic link | |
974 | */ | |
975 | ufs_symlink(ndp, vap, target) | |
976 | struct nameidata *ndp; | |
977 | struct vattr *vap; | |
978 | char *target; | |
979 | { | |
980 | struct inode *ip; | |
981 | int error; | |
982 | ||
983 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
984 | if (error) | |
985 | return (error); | |
986 | error = rdwri(UIO_WRITE, ip, target, strlen(target), (off_t)0, | |
987 | UIO_SYSSPACE, ndp->ni_cred, (int *)0); | |
988 | iput(ip); | |
989 | return (error); | |
990 | } | |
991 | ||
992 | /* | |
993 | * Vnode op for read and write | |
994 | */ | |
995 | ufs_readdir(vp, uio, offp, cred) | |
996 | struct vnode *vp; | |
997 | register struct uio *uio; | |
998 | off_t *offp; | |
999 | struct ucred *cred; | |
88a7a62a | 1000 | { |
7188ac27 KM |
1001 | register struct inode *ip = VTOI(vp); |
1002 | int count, error; | |
88a7a62a | 1003 | |
7188ac27 KM |
1004 | ILOCK(ip); |
1005 | uio->uio_offset = *offp; | |
1006 | count = uio->uio_resid; | |
1007 | count &= ~(DIRBLKSIZ - 1); | |
1008 | if (vp->v_type != VDIR || uio->uio_iovcnt != 1 || | |
1009 | (count < DIRBLKSIZ) || (uio->uio_offset & (DIRBLKSIZ -1))) { | |
1010 | IUNLOCK(ip); | |
1011 | return (EINVAL); | |
1012 | } | |
1013 | uio->uio_resid = count; | |
1014 | uio->uio_iov->iov_len = count; | |
1015 | error = readip(ip, uio, cred); | |
1016 | *offp += count - uio->uio_resid; | |
1017 | IUNLOCK(ip); | |
1018 | return (error); | |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * Return target name of a symbolic link | |
1023 | */ | |
1024 | ufs_readlink(vp, uiop, cred) | |
1025 | struct vnode *vp; | |
1026 | struct uio *uiop; | |
1027 | struct ucred *cred; | |
1028 | { | |
1029 | ||
1030 | return (readip(VTOI(vp), uiop, cred)); | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1035 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1036 | */ | |
1037 | ufs_abortop(ndp) | |
1038 | register struct nameidata *ndp; | |
1039 | { | |
1040 | register struct inode *ip; | |
1041 | ||
1042 | if (ndp->ni_vp) { | |
1043 | ip = VTOI(ndp->ni_vp); | |
1044 | if (ip->i_flag & ILOCKED) | |
1045 | IUNLOCK(ip); | |
1046 | vrele(ndp->ni_vp); | |
8462a185 | 1047 | } |
7188ac27 KM |
1048 | if (ndp->ni_dvp) { |
1049 | ip = VTOI(ndp->ni_dvp); | |
1050 | if (ip->i_flag & ILOCKED) | |
1051 | IUNLOCK(ip); | |
1052 | vrele(ndp->ni_dvp); | |
88a7a62a | 1053 | } |
7188ac27 KM |
1054 | return; |
1055 | } | |
1056 | ||
1057 | ufs_lock(vp) | |
1058 | struct vnode *vp; | |
1059 | { | |
1060 | register struct inode *ip = VTOI(vp); | |
1061 | ||
1062 | ILOCK(ip); | |
1063 | return (0); | |
1064 | } | |
1065 | ||
1066 | ufs_unlock(vp) | |
1067 | struct vnode *vp; | |
1068 | { | |
1069 | register struct inode *ip = VTOI(vp); | |
1070 | ||
1071 | if (!(ip->i_flag & ILOCKED)) | |
1072 | panic("ufs_unlock NOT LOCKED"); | |
1073 | IUNLOCK(ip); | |
1074 | return (0); | |
1075 | } | |
1076 | ||
1077 | /* | |
1078 | * Get access to bmap | |
1079 | */ | |
1080 | ufs_bmap(vp, bn, vpp, bnp) | |
1081 | struct vnode *vp; | |
1082 | daddr_t bn; | |
1083 | struct vnode **vpp; | |
1084 | daddr_t *bnp; | |
1085 | { | |
1086 | struct inode *ip = VTOI(vp); | |
1087 | ||
1088 | if (vpp != NULL) | |
1089 | *vpp = ip->i_devvp; | |
1090 | if (bnp == NULL) | |
1091 | return (0); | |
1092 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1093 | } |
1094 | ||
1095 | /* | |
7188ac27 | 1096 | * Just call the device strategy routine |
88a7a62a | 1097 | */ |
7188ac27 KM |
1098 | ufs_strategy(bp) |
1099 | register struct buf *bp; | |
88a7a62a | 1100 | { |
7188ac27 KM |
1101 | (*bdevsw[major(bp->b_dev)].d_strategy)(bp); |
1102 | return (0); | |
1103 | } | |
88a7a62a | 1104 | |
7188ac27 KM |
1105 | /* |
1106 | * Make a new file. | |
1107 | */ | |
1108 | maknode(mode, ndp, ipp) | |
1109 | int mode; | |
1110 | register struct nameidata *ndp; | |
1111 | struct inode **ipp; | |
1112 | { | |
1113 | register struct inode *ip; | |
1114 | struct inode *tip; | |
1115 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1116 | ino_t ipref; | |
1117 | int error; | |
1118 | ||
1119 | *ipp = 0; | |
1120 | if ((mode & IFMT) == IFDIR) | |
1121 | ipref = dirpref(pdir->i_fs); | |
1122 | else | |
1123 | ipref = pdir->i_number; | |
1124 | error = ialloc(pdir, ipref, mode, &tip); | |
1125 | if (error) { | |
1126 | iput(pdir); | |
1127 | return (error); | |
1128 | } | |
1129 | ip = tip; | |
1130 | #ifdef QUOTA | |
1131 | if (ip->i_dquot != NODQUOT) | |
1132 | panic("maknode: dquot"); | |
1133 | #endif | |
1134 | ip->i_flag |= IACC|IUPD|ICHG; | |
1135 | if ((mode & IFMT) == 0) | |
1136 | mode |= IFREG; | |
1137 | ip->i_mode = mode; | |
1138 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1139 | ip->i_nlink = 1; | |
1140 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1141 | ip->i_gid = pdir->i_gid; | |
1142 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1143 | suser(ndp->ni_cred, NULL)) | |
1144 | ip->i_mode &= ~ISGID; | |
1145 | #ifdef QUOTA | |
1146 | ip->i_dquot = inoquota(ip); | |
1147 | #endif | |
1148 | ||
1149 | /* | |
1150 | * Make sure inode goes to disk before directory entry. | |
1151 | */ | |
1152 | if ((error = iupdat(ip, &time, &time, 1)) || | |
1153 | (error = direnter(ip, ndp))) { | |
1154 | /* | |
1155 | * Write error occurred trying to update the inode | |
1156 | * or the directory so must deallocate the inode. | |
1157 | */ | |
1158 | ip->i_nlink = 0; | |
1159 | ip->i_flag |= ICHG; | |
1160 | iput(ip); | |
1161 | return (error); | |
1162 | } | |
1163 | *ipp = ip; | |
1164 | return (0); | |
88a7a62a | 1165 | } |