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 | * | |
3088dd32 | 17 | * @(#)ufs_vnops.c 7.16 (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 | } | |
3e78e260 | 149 | iput(ip); |
7188ac27 KM |
150 | /* |
151 | * Remove inode so that it will be reloaded by iget and | |
152 | * checked to see if it is an alias of an existing entry | |
153 | * in the inode cache. | |
154 | */ | |
155 | remque(ip); | |
156 | ip->i_forw = ip; | |
157 | ip->i_back = ip; | |
158 | return (0); | |
3e78e260 BJ |
159 | } |
160 | ||
161 | /* | |
7188ac27 KM |
162 | * Open called. |
163 | * | |
164 | * Nothing to do. | |
3e78e260 | 165 | */ |
7188ac27 KM |
166 | /* ARGSUSED */ |
167 | ufs_open(vp, mode, cred) | |
168 | struct vnode *vp; | |
169 | int mode; | |
170 | struct ucred *cred; | |
3e78e260 | 171 | { |
3e78e260 | 172 | |
7188ac27 | 173 | return (0); |
3e78e260 BJ |
174 | } |
175 | ||
176 | /* | |
7188ac27 KM |
177 | * Close called |
178 | * | |
179 | * Update the times on the inode. | |
3e78e260 | 180 | */ |
7188ac27 KM |
181 | /* ARGSUSED */ |
182 | ufs_close(vp, fflag, cred) | |
183 | struct vnode *vp; | |
184 | int fflag; | |
185 | struct ucred *cred; | |
3e78e260 | 186 | { |
7188ac27 | 187 | register struct inode *ip = VTOI(vp); |
3e78e260 | 188 | |
7188ac27 KM |
189 | if (vp->v_count > 1 && !(ip->i_flag & ILOCKED)) |
190 | ITIMES(ip, &time, &time); | |
191 | return (0); | |
3e78e260 BJ |
192 | } |
193 | ||
7188ac27 KM |
194 | ufs_access(vp, mode, cred) |
195 | struct vnode *vp; | |
196 | int mode; | |
197 | struct ucred *cred; | |
3e78e260 | 198 | { |
3e78e260 | 199 | |
7188ac27 | 200 | return (iaccess(VTOI(vp), mode, cred)); |
3e78e260 BJ |
201 | } |
202 | ||
7188ac27 KM |
203 | /* ARGSUSED */ |
204 | ufs_getattr(vp, vap, cred) | |
205 | struct vnode *vp; | |
206 | register struct vattr *vap; | |
207 | struct ucred *cred; | |
3e78e260 | 208 | { |
7188ac27 | 209 | register struct inode *ip = VTOI(vp); |
3e78e260 | 210 | |
7188ac27 | 211 | ITIMES(ip, &time, &time); |
3e78e260 | 212 | /* |
7188ac27 | 213 | * Copy from inode table |
3e78e260 | 214 | */ |
7188ac27 KM |
215 | vap->va_fsid = ip->i_dev; |
216 | vap->va_fileid = ip->i_number; | |
217 | vap->va_mode = ip->i_mode & ~IFMT; | |
218 | vap->va_nlink = ip->i_nlink; | |
219 | vap->va_uid = ip->i_uid; | |
220 | vap->va_gid = ip->i_gid; | |
221 | vap->va_rdev = (dev_t)ip->i_rdev; | |
222 | vap->va_size = ip->i_ic.ic_size.val[0]; | |
223 | vap->va_size1 = ip->i_ic.ic_size.val[1]; | |
224 | vap->va_atime.tv_sec = ip->i_atime; | |
6ef53d70 | 225 | vap->va_atime.tv_usec = 0; |
7188ac27 | 226 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 227 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 228 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 229 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
230 | vap->va_flags = ip->i_flags; |
231 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
232 | /* this doesn't belong here */ |
233 | if (vp->v_type == VBLK) | |
234 | vap->va_blocksize = BLKDEV_IOSIZE; | |
235 | else if (vp->v_type == VCHR) | |
236 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 237 | else |
7188ac27 | 238 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 239 | vap->va_bytes = dbtob(ip->i_blocks); |
7188ac27 KM |
240 | vap->va_bytes1 = -1; |
241 | vap->va_type = vp->v_type; | |
242 | return (0); | |
3e78e260 BJ |
243 | } |
244 | ||
245 | /* | |
7188ac27 | 246 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 247 | */ |
7188ac27 KM |
248 | ufs_setattr(vp, vap, cred) |
249 | register struct vnode *vp; | |
250 | register struct vattr *vap; | |
251 | register struct ucred *cred; | |
3e78e260 | 252 | { |
7188ac27 KM |
253 | register struct inode *ip = VTOI(vp); |
254 | int error = 0; | |
b4d1aee9 | 255 | |
7188ac27 KM |
256 | /* |
257 | * Check for unsetable attributes. | |
258 | */ | |
259 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
260 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
261 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 262 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 263 | return (EINVAL); |
b4d1aee9 | 264 | } |
7188ac27 KM |
265 | /* |
266 | * Go through the fields and update iff not VNOVAL. | |
267 | */ | |
268 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
269 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
270 | return (error); | |
271 | if (vap->va_size != VNOVAL) { | |
272 | if (vp->v_type == VDIR) | |
273 | return (EISDIR); | |
7188ac27 KM |
274 | if (error = itrunc(ip, vap->va_size)) |
275 | return (error); | |
3e78e260 | 276 | } |
7188ac27 | 277 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
278 | if (cred->cr_uid != ip->i_uid && |
279 | (error = suser(cred, &u.u_acflag))) | |
280 | return (error); | |
7188ac27 KM |
281 | if (vap->va_atime.tv_sec != VNOVAL) |
282 | ip->i_flag |= IACC; | |
283 | if (vap->va_mtime.tv_sec != VNOVAL) | |
284 | ip->i_flag |= IUPD; | |
285 | ip->i_flag |= ICHG; | |
286 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
287 | return (error); | |
5485e062 | 288 | } |
7188ac27 KM |
289 | if (vap->va_mode != (u_short)VNOVAL) |
290 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
291 | if (vap->va_flags != VNOVAL) { |
292 | if (cred->cr_uid != ip->i_uid && | |
293 | (error = suser(cred, &u.u_acflag))) | |
294 | return (error); | |
295 | if (cred->cr_uid == 0) { | |
296 | ip->i_flags = vap->va_flags; | |
297 | } else { | |
298 | ip->i_flags &= 0xffff0000; | |
299 | ip->i_flags |= (vap->va_flags & 0xffff); | |
300 | } | |
301 | ip->i_flag |= ICHG; | |
302 | } | |
7188ac27 | 303 | return (error); |
528f664c SL |
304 | } |
305 | ||
4f083fd7 SL |
306 | /* |
307 | * Change the mode on a file. | |
308 | * Inode must be locked before calling. | |
309 | */ | |
7188ac27 KM |
310 | chmod1(vp, mode, cred) |
311 | register struct vnode *vp; | |
528f664c | 312 | register int mode; |
7188ac27 | 313 | struct ucred *cred; |
528f664c | 314 | { |
7188ac27 | 315 | register struct inode *ip = VTOI(vp); |
de412887 | 316 | int error; |
197da11b | 317 | |
de412887 KM |
318 | if (cred->cr_uid != ip->i_uid && |
319 | (error = suser(cred, &u.u_acflag))) | |
320 | return (error); | |
3e78e260 | 321 | ip->i_mode &= ~07777; |
7188ac27 KM |
322 | if (cred->cr_uid) { |
323 | if (vp->v_type != VDIR) | |
47af7174 | 324 | mode &= ~ISVTX; |
7188ac27 | 325 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 326 | mode &= ~ISGID; |
f94ceb3b | 327 | } |
7188ac27 | 328 | ip->i_mode |= mode & 07777; |
3e78e260 | 329 | ip->i_flag |= ICHG; |
7188ac27 KM |
330 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
331 | xrele(vp); | |
47af7174 | 332 | return (0); |
5485e062 BJ |
333 | } |
334 | ||
528f664c SL |
335 | /* |
336 | * Perform chown operation on inode ip; | |
337 | * inode must be locked prior to call. | |
338 | */ | |
7188ac27 KM |
339 | chown1(vp, uid, gid, cred) |
340 | register struct vnode *vp; | |
341 | uid_t uid; | |
342 | gid_t gid; | |
343 | struct ucred *cred; | |
528f664c | 344 | { |
7188ac27 | 345 | register struct inode *ip = VTOI(vp); |
528f664c SL |
346 | #ifdef QUOTA |
347 | register long change; | |
bb1b75f4 | 348 | #endif |
7188ac27 | 349 | int error; |
528f664c | 350 | |
7188ac27 | 351 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 352 | uid = ip->i_uid; |
7188ac27 | 353 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 354 | gid = ip->i_gid; |
18b0bce6 KB |
355 | /* |
356 | * If we don't own the file, are trying to change the owner | |
357 | * of the file, or are not a member of the target group, | |
358 | * the caller must be superuser or the call fails. | |
359 | */ | |
7188ac27 KM |
360 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
361 | !groupmember((gid_t)gid, cred)) && | |
362 | (error = suser(cred, &u.u_acflag))) | |
363 | return (error); | |
bb1b75f4 | 364 | #ifdef QUOTA |
3809bf69 | 365 | if (ip->i_uid == uid) /* this just speeds things a little */ |
0a77f278 | 366 | change = 0; |
2e073567 SL |
367 | else |
368 | change = ip->i_blocks; | |
369 | (void) chkdq(ip, -change, 1); | |
370 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 371 | dqrele(ip->i_dquot); |
f94ceb3b | 372 | #endif |
bb1b75f4 SL |
373 | ip->i_uid = uid; |
374 | ip->i_gid = gid; | |
3e78e260 | 375 | ip->i_flag |= ICHG; |
3088dd32 | 376 | ip->i_mode &= ~(ISUID|ISGID); |
528f664c | 377 | #ifdef QUOTA |
0a77f278 | 378 | ip->i_dquot = inoquota(ip); |
2e073567 | 379 | (void) chkdq(ip, change, 1); |
8011f5df | 380 | (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1); |
2e073567 SL |
381 | return (u.u_error); /* should == 0 ALWAYS !! */ |
382 | #else | |
bb1b75f4 | 383 | return (0); |
2e073567 | 384 | #endif |
d67a03eb BJ |
385 | } |
386 | ||
7188ac27 KM |
387 | /* ARGSUSED */ |
388 | ufs_ioctl(vp, com, data, fflag, cred) | |
389 | struct vnode *vp; | |
390 | int com; | |
391 | caddr_t data; | |
392 | int fflag; | |
393 | struct ucred *cred; | |
bb1b75f4 | 394 | { |
bb1b75f4 | 395 | |
7188ac27 KM |
396 | printf("ufs_ioctl called with type %d\n", vp->v_type); |
397 | return (ENOTTY); | |
398 | } | |
399 | ||
400 | /* ARGSUSED */ | |
401 | ufs_select(vp, which, cred) | |
402 | struct vnode *vp; | |
403 | int which; | |
404 | struct ucred *cred; | |
405 | { | |
406 | ||
407 | printf("ufs_select called with type %d\n", vp->v_type); | |
408 | return (1); /* XXX */ | |
bb1b75f4 | 409 | } |
d67a03eb | 410 | |
4f083fd7 | 411 | /* |
7188ac27 KM |
412 | * Mmap a file |
413 | * | |
414 | * NB Currently unsupported. | |
4f083fd7 | 415 | */ |
7188ac27 KM |
416 | /* ARGSUSED */ |
417 | ufs_mmap(vp, fflags, cred) | |
418 | struct vnode *vp; | |
419 | int fflags; | |
420 | struct ucred *cred; | |
d67a03eb | 421 | { |
d67a03eb | 422 | |
7188ac27 | 423 | return (EINVAL); |
d67a03eb | 424 | } |
64d3a787 | 425 | |
4f083fd7 | 426 | /* |
7188ac27 | 427 | * Synch an open file. |
4f083fd7 | 428 | */ |
7188ac27 KM |
429 | /* ARGSUSED */ |
430 | ufs_fsync(vp, fflags, cred) | |
431 | struct vnode *vp; | |
432 | int fflags; | |
433 | struct ucred *cred; | |
528f664c | 434 | { |
7188ac27 KM |
435 | register struct inode *ip = VTOI(vp); |
436 | int error; | |
437 | ||
438 | ILOCK(ip); | |
439 | if (fflags&FWRITE) | |
440 | ip->i_flag |= ICHG; | |
441 | error = syncip(ip); | |
442 | IUNLOCK(ip); | |
443 | return (error); | |
528f664c SL |
444 | } |
445 | ||
4f083fd7 | 446 | /* |
7188ac27 KM |
447 | * Seek on a file |
448 | * | |
449 | * Nothing to do, so just return. | |
4f083fd7 | 450 | */ |
7188ac27 KM |
451 | /* ARGSUSED */ |
452 | ufs_seek(vp, oldoff, newoff, cred) | |
453 | struct vnode *vp; | |
454 | off_t oldoff, newoff; | |
455 | struct ucred *cred; | |
528f664c | 456 | { |
7188ac27 KM |
457 | |
458 | return (0); | |
459 | } | |
460 | ||
461 | /* | |
462 | * ufs remove | |
463 | * Hard to avoid races here, especially | |
464 | * in unlinking directories. | |
465 | */ | |
466 | ufs_remove(ndp) | |
467 | struct nameidata *ndp; | |
468 | { | |
469 | register struct inode *ip, *dp; | |
470 | int error; | |
471 | ||
472 | ip = VTOI(ndp->ni_vp); | |
473 | dp = VTOI(ndp->ni_dvp); | |
474 | error = dirremove(ndp); | |
475 | if (!error) { | |
476 | ip->i_nlink--; | |
477 | ip->i_flag |= ICHG; | |
528f664c | 478 | } |
7188ac27 KM |
479 | if (dp == ip) |
480 | vrele(ITOV(ip)); | |
481 | else | |
482 | iput(ip); | |
483 | iput(dp); | |
484 | return (error); | |
4f083fd7 SL |
485 | } |
486 | ||
487 | /* | |
7188ac27 | 488 | * link vnode call |
4f083fd7 | 489 | */ |
7188ac27 KM |
490 | ufs_link(vp, ndp) |
491 | register struct vnode *vp; | |
492 | register struct nameidata *ndp; | |
4f083fd7 | 493 | { |
7188ac27 KM |
494 | register struct inode *ip = VTOI(vp); |
495 | int error; | |
4f083fd7 | 496 | |
7188ac27 KM |
497 | if (ndp->ni_dvp != vp) |
498 | ILOCK(ip); | |
499 | if (ip->i_nlink == LINK_MAX - 1) { | |
500 | error = EMLINK; | |
501 | goto out; | |
502 | } | |
503 | ip->i_nlink++; | |
504 | ip->i_flag |= ICHG; | |
505 | error = iupdat(ip, &time, &time, 1); | |
506 | if (!error) | |
507 | error = direnter(ip, ndp); | |
508 | out: | |
509 | if (ndp->ni_dvp != vp) | |
510 | IUNLOCK(ip); | |
511 | if (error) { | |
512 | ip->i_nlink--; | |
82252d2b | 513 | ip->i_flag |= ICHG; |
7188ac27 KM |
514 | } |
515 | return (error); | |
528f664c SL |
516 | } |
517 | ||
4f083fd7 SL |
518 | /* |
519 | * Rename system call. | |
520 | * rename("foo", "bar"); | |
521 | * is essentially | |
522 | * unlink("bar"); | |
523 | * link("foo", "bar"); | |
524 | * unlink("foo"); | |
525 | * but ``atomically''. Can't do full commit without saving state in the | |
526 | * inode on disk which isn't feasible at this time. Best we can do is | |
527 | * always guarantee the target exists. | |
528 | * | |
529 | * Basic algorithm is: | |
530 | * | |
531 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 532 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
533 | * from underneath us while we work (it may be truncated by |
534 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
535 | * 2) Link source to destination. If destination already exists, |
536 | * delete it first. | |
68f21562 KM |
537 | * 3) Unlink source reference to inode if still around. If a |
538 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
539 | * is different from the source, patch the ".." entry in the |
540 | * directory. | |
4f083fd7 | 541 | */ |
7188ac27 KM |
542 | ufs_rename(fndp, tndp) |
543 | register struct nameidata *fndp, *tndp; | |
528f664c | 544 | { |
4f083fd7 | 545 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
546 | struct dirtemplate dirbuf; |
547 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 548 | int error = 0; |
4f083fd7 | 549 | |
7188ac27 KM |
550 | dp = VTOI(fndp->ni_dvp); |
551 | ip = VTOI(fndp->ni_vp); | |
552 | ILOCK(ip); | |
4f083fd7 | 553 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 554 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 555 | |
4f083fd7 | 556 | /* |
046f18d1 | 557 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 558 | */ |
7188ac27 KM |
559 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
560 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
561 | IUNLOCK(ip); | |
562 | ufs_abortop(fndp); | |
563 | ufs_abortop(tndp); | |
564 | return (EINVAL); | |
4f083fd7 | 565 | } |
68f21562 | 566 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
567 | oldparent = dp->i_number; |
568 | doingdirectory++; | |
569 | } | |
7188ac27 | 570 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
571 | |
572 | /* | |
573 | * 1) Bump link count while we're moving stuff | |
574 | * around. If we crash somewhere before | |
575 | * completing our work, the link count | |
576 | * may be wrong, but correctable. | |
577 | */ | |
578 | ip->i_nlink++; | |
579 | ip->i_flag |= ICHG; | |
7188ac27 | 580 | error = iupdat(ip, &time, &time, 1); |
a388503d | 581 | IUNLOCK(ip); |
4f083fd7 SL |
582 | |
583 | /* | |
584 | * When the target exists, both the directory | |
7188ac27 | 585 | * and target vnodes are returned locked. |
4f083fd7 | 586 | */ |
7188ac27 KM |
587 | dp = VTOI(tndp->ni_dvp); |
588 | xp = NULL; | |
589 | if (tndp->ni_vp) | |
590 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
591 | /* |
592 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
593 | * parent) then the source directory must not be in the |
594 | * directory heirarchy above the target, as this would | |
595 | * orphan everything below the source directory. Also | |
596 | * the user must have write permission in the source so | |
597 | * as to be able to change "..". We must repeat the call | |
598 | * to namei, as the parent directory is unlocked by the | |
599 | * call to checkpath(). | |
046f18d1 | 600 | */ |
68f21562 KM |
601 | if (oldparent != dp->i_number) |
602 | newparent = dp->i_number; | |
603 | if (doingdirectory && newparent) { | |
7188ac27 | 604 | if (error = iaccess(ip, IWRITE, tndp->ni_cred)) |
81552f0f | 605 | goto bad; |
7188ac27 | 606 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 607 | do { |
7188ac27 | 608 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 609 | if (xp != NULL) |
79cf21e2 | 610 | iput(xp); |
7188ac27 | 611 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 612 | goto out; |
7188ac27 | 613 | if (error = namei(tndp)) |
81552f0f | 614 | goto out; |
7188ac27 KM |
615 | xp = NULL; |
616 | if (tndp->ni_vp) | |
617 | xp = VTOI(tndp->ni_vp); | |
618 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 619 | } |
4f083fd7 SL |
620 | /* |
621 | * 2) If target doesn't exist, link the target | |
622 | * to the source and unlink the source. | |
623 | * Otherwise, rewrite the target directory | |
624 | * entry to reference the source inode and | |
625 | * expunge the original entry's existence. | |
626 | */ | |
4f083fd7 | 627 | if (xp == NULL) { |
7188ac27 KM |
628 | if (dp->i_dev != ip->i_dev) |
629 | panic("rename: EXDEV"); | |
4f083fd7 | 630 | /* |
68f21562 KM |
631 | * Account for ".." in new directory. |
632 | * When source and destination have the same | |
633 | * parent we don't fool with the link count. | |
4f083fd7 | 634 | */ |
68f21562 | 635 | if (doingdirectory && newparent) { |
4f083fd7 SL |
636 | dp->i_nlink++; |
637 | dp->i_flag |= ICHG; | |
7188ac27 | 638 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 639 | } |
7188ac27 | 640 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
641 | goto out; |
642 | } else { | |
7188ac27 KM |
643 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
644 | panic("rename: EXDEV"); | |
e69c3c9c SL |
645 | /* |
646 | * Short circuit rename(foo, foo). | |
647 | */ | |
648 | if (xp->i_number == ip->i_number) | |
7188ac27 | 649 | panic("rename: same file"); |
80cee150 JB |
650 | /* |
651 | * If the parent directory is "sticky", then the user must | |
652 | * own the parent directory, or the destination of the rename, | |
653 | * otherwise the destination may not be changed (except by | |
654 | * root). This implements append-only directories. | |
655 | */ | |
7188ac27 KM |
656 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
657 | tndp->ni_cred->cr_uid != dp->i_uid && | |
658 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
659 | error = EPERM; |
660 | goto bad; | |
661 | } | |
4f083fd7 | 662 | /* |
a5390dce SL |
663 | * Target must be empty if a directory |
664 | * and have no links to it. | |
4f083fd7 SL |
665 | * Also, insure source and target are |
666 | * compatible (both directories, or both | |
667 | * not directories). | |
668 | */ | |
669 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
670 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
671 | xp->i_nlink > 2) { | |
a5390dce | 672 | error = ENOTEMPTY; |
4f083fd7 SL |
673 | goto bad; |
674 | } | |
675 | if (!doingdirectory) { | |
a5390dce | 676 | error = ENOTDIR; |
4f083fd7 SL |
677 | goto bad; |
678 | } | |
7188ac27 | 679 | cache_purge(ITOV(dp)); |
4f083fd7 | 680 | } else if (doingdirectory) { |
a5390dce | 681 | error = EISDIR; |
4f083fd7 SL |
682 | goto bad; |
683 | } | |
7188ac27 KM |
684 | if (error = dirrewrite(dp, ip, tndp)) |
685 | goto bad; | |
686 | vput(ITOV(dp)); | |
4f083fd7 | 687 | /* |
a5390dce SL |
688 | * Adjust the link count of the target to |
689 | * reflect the dirrewrite above. If this is | |
690 | * a directory it is empty and there are | |
691 | * no links to it, so we can squash the inode and | |
692 | * any space associated with it. We disallowed | |
693 | * renaming over top of a directory with links to | |
68f21562 KM |
694 | * it above, as the remaining link would point to |
695 | * a directory without "." or ".." entries. | |
4f083fd7 | 696 | */ |
a5390dce | 697 | xp->i_nlink--; |
4f083fd7 | 698 | if (doingdirectory) { |
a5390dce SL |
699 | if (--xp->i_nlink != 0) |
700 | panic("rename: linked directory"); | |
7188ac27 | 701 | error = itrunc(xp, (u_long)0); |
a5390dce | 702 | } |
4f083fd7 | 703 | xp->i_flag |= ICHG; |
88d931ba | 704 | iput(xp); |
31db12cb | 705 | xp = NULL; |
4f083fd7 SL |
706 | } |
707 | ||
708 | /* | |
709 | * 3) Unlink the source. | |
710 | */ | |
7188ac27 KM |
711 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
712 | (void)namei(fndp); | |
713 | if (fndp->ni_vp != NULL) { | |
714 | xp = VTOI(fndp->ni_vp); | |
715 | dp = VTOI(fndp->ni_dvp); | |
716 | } else { | |
79cf21e2 KM |
717 | if (fndp->ni_dvp != NULL) |
718 | vput(fndp->ni_dvp); | |
7188ac27 | 719 | xp = NULL; |
4f1a9037 | 720 | dp = NULL; |
7188ac27 | 721 | } |
4f083fd7 | 722 | /* |
7188ac27 | 723 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
724 | * changed while the new name has been entered. If the source is |
725 | * a file then the entry may have been unlinked or renamed. In | |
726 | * either case there is no further work to be done. If the source | |
727 | * is a directory then it cannot have been rmdir'ed; its link | |
728 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 729 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 730 | * rename. |
4f083fd7 | 731 | */ |
4f1a9037 | 732 | if (xp != ip) { |
68f21562 | 733 | if (doingdirectory) |
4f1a9037 | 734 | panic("rename: lost dir entry"); |
68f21562 | 735 | } else { |
4f083fd7 | 736 | /* |
68f21562 KM |
737 | * If the source is a directory with a |
738 | * new parent, the link count of the old | |
739 | * parent directory must be decremented | |
740 | * and ".." set to point to the new parent. | |
4f083fd7 | 741 | */ |
68f21562 | 742 | if (doingdirectory && newparent) { |
4f083fd7 SL |
743 | dp->i_nlink--; |
744 | dp->i_flag |= ICHG; | |
68f21562 | 745 | error = rdwri(UIO_READ, xp, (caddr_t)&dirbuf, |
7188ac27 | 746 | sizeof (struct dirtemplate), (off_t)0, |
93e273b9 | 747 | UIO_SYSSPACE, tndp->ni_cred, (int *)0); |
68f21562 KM |
748 | if (error == 0) { |
749 | if (dirbuf.dotdot_namlen != 2 || | |
750 | dirbuf.dotdot_name[0] != '.' || | |
751 | dirbuf.dotdot_name[1] != '.') { | |
752 | printf("rename: mangled dir\n"); | |
753 | } else { | |
754 | dirbuf.dotdot_ino = newparent; | |
755 | (void) rdwri(UIO_WRITE, xp, | |
756 | (caddr_t)&dirbuf, | |
757 | sizeof (struct dirtemplate), | |
93e273b9 | 758 | (off_t)0, UIO_SYSSPACE, |
7188ac27 KM |
759 | tndp->ni_cred, (int *)0); |
760 | cache_purge(ITOV(dp)); | |
68f21562 KM |
761 | } |
762 | } | |
4f083fd7 | 763 | } |
7188ac27 KM |
764 | error = dirremove(fndp); |
765 | if (!error) { | |
68f21562 KM |
766 | xp->i_nlink--; |
767 | xp->i_flag |= ICHG; | |
4f083fd7 | 768 | } |
68f21562 | 769 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 770 | } |
4f083fd7 | 771 | if (dp) |
7188ac27 | 772 | vput(ITOV(dp)); |
68f21562 | 773 | if (xp) |
7188ac27 KM |
774 | vput(ITOV(xp)); |
775 | vrele(ITOV(ip)); | |
776 | return (error); | |
a5390dce | 777 | |
4f083fd7 | 778 | bad: |
4f083fd7 | 779 | if (xp) |
7188ac27 KM |
780 | vput(ITOV(xp)); |
781 | vput(ITOV(dp)); | |
4f083fd7 SL |
782 | out: |
783 | ip->i_nlink--; | |
784 | ip->i_flag |= ICHG; | |
7188ac27 KM |
785 | vrele(ITOV(ip)); |
786 | return (error); | |
64d3a787 | 787 | } |
88a7a62a SL |
788 | |
789 | /* | |
790 | * A virgin directory (no blushing please). | |
791 | */ | |
792 | struct dirtemplate mastertemplate = { | |
793 | 0, 12, 1, ".", | |
794 | 0, DIRBLKSIZ - 12, 2, ".." | |
795 | }; | |
796 | ||
797 | /* | |
798 | * Mkdir system call | |
799 | */ | |
7188ac27 KM |
800 | ufs_mkdir(ndp, vap) |
801 | struct nameidata *ndp; | |
802 | struct vattr *vap; | |
88a7a62a | 803 | { |
88a7a62a | 804 | register struct inode *ip, *dp; |
7188ac27 KM |
805 | struct inode *tip; |
806 | struct vnode *dvp; | |
88a7a62a | 807 | struct dirtemplate dirtemplate; |
7188ac27 KM |
808 | int error; |
809 | int dmode; | |
810 | ||
811 | dvp = ndp->ni_dvp; | |
812 | dp = VTOI(dvp); | |
813 | dmode = vap->va_mode&0777; | |
814 | dmode |= IFDIR; | |
88a7a62a SL |
815 | /* |
816 | * Must simulate part of maknode here | |
817 | * in order to acquire the inode, but | |
818 | * not have it entered in the parent | |
819 | * directory. The entry is made later | |
820 | * after writing "." and ".." entries out. | |
821 | */ | |
7188ac27 KM |
822 | error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip); |
823 | if (error) { | |
88a7a62a | 824 | iput(dp); |
7188ac27 | 825 | return (error); |
88a7a62a | 826 | } |
7188ac27 | 827 | ip = tip; |
88a7a62a SL |
828 | #ifdef QUOTA |
829 | if (ip->i_dquot != NODQUOT) | |
830 | panic("mkdir: dquot"); | |
831 | #endif | |
832 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
833 | ip->i_mode = dmode; |
834 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 835 | ip->i_nlink = 2; |
7188ac27 | 836 | ip->i_uid = ndp->ni_cred->cr_uid; |
88a7a62a SL |
837 | ip->i_gid = dp->i_gid; |
838 | #ifdef QUOTA | |
839 | ip->i_dquot = inoquota(ip); | |
840 | #endif | |
7188ac27 | 841 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
842 | |
843 | /* | |
844 | * Bump link count in parent directory | |
845 | * to reflect work done below. Should | |
846 | * be done before reference is created | |
847 | * so reparation is possible if we crash. | |
848 | */ | |
849 | dp->i_nlink++; | |
850 | dp->i_flag |= ICHG; | |
7188ac27 | 851 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
852 | |
853 | /* | |
854 | * Initialize directory with "." | |
855 | * and ".." from static template. | |
856 | */ | |
857 | dirtemplate = mastertemplate; | |
858 | dirtemplate.dot_ino = ip->i_number; | |
859 | dirtemplate.dotdot_ino = dp->i_number; | |
7188ac27 KM |
860 | error = rdwri(UIO_WRITE, ip, (caddr_t)&dirtemplate, |
861 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, | |
862 | ndp->ni_cred, (int *)0); | |
863 | if (error) { | |
88a7a62a SL |
864 | dp->i_nlink--; |
865 | dp->i_flag |= ICHG; | |
866 | goto bad; | |
867 | } | |
7188ac27 KM |
868 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
869 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
870 | else |
871 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
872 | /* |
873 | * Directory all set up, now | |
874 | * install the entry for it in | |
875 | * the parent directory. | |
876 | */ | |
7188ac27 | 877 | error = direnter(ip, ndp); |
88a7a62a | 878 | dp = NULL; |
7188ac27 | 879 | if (error) { |
715baff1 | 880 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
881 | error = namei(ndp); |
882 | if (!error) { | |
883 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
884 | dp->i_nlink--; |
885 | dp->i_flag |= ICHG; | |
886 | } | |
887 | } | |
888 | bad: | |
889 | /* | |
890 | * No need to do an explicit itrunc here, | |
7188ac27 | 891 | * vrele will do this for us because we set |
88a7a62a SL |
892 | * the link count to 0. |
893 | */ | |
7188ac27 | 894 | if (error) { |
88a7a62a SL |
895 | ip->i_nlink = 0; |
896 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
897 | iput(ip); |
898 | } else | |
899 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
900 | if (dp) |
901 | iput(dp); | |
7188ac27 | 902 | return (error); |
88a7a62a SL |
903 | } |
904 | ||
905 | /* | |
906 | * Rmdir system call. | |
907 | */ | |
7188ac27 KM |
908 | ufs_rmdir(ndp) |
909 | register struct nameidata *ndp; | |
88a7a62a | 910 | { |
88a7a62a | 911 | register struct inode *ip, *dp; |
7188ac27 KM |
912 | int error = 0; |
913 | ||
914 | ip = VTOI(ndp->ni_vp); | |
915 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
916 | /* |
917 | * No rmdir "." please. | |
918 | */ | |
919 | if (dp == ip) { | |
7188ac27 | 920 | vrele(ITOV(dp)); |
88a7a62a | 921 | iput(ip); |
7188ac27 | 922 | return (EINVAL); |
88a7a62a SL |
923 | } |
924 | /* | |
925 | * Verify the directory is empty (and valid). | |
926 | * (Rmdir ".." won't be valid since | |
927 | * ".." will contain a reference to | |
928 | * the current directory and thus be | |
929 | * non-empty.) | |
930 | */ | |
7188ac27 KM |
931 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
932 | error = ENOTEMPTY; | |
88a7a62a SL |
933 | goto out; |
934 | } | |
935 | /* | |
936 | * Delete reference to directory before purging | |
937 | * inode. If we crash in between, the directory | |
938 | * will be reattached to lost+found, | |
939 | */ | |
7188ac27 | 940 | if (error = dirremove(ndp)) |
88a7a62a SL |
941 | goto out; |
942 | dp->i_nlink--; | |
943 | dp->i_flag |= ICHG; | |
7188ac27 | 944 | cache_purge(ITOV(dp)); |
88a7a62a | 945 | iput(dp); |
7188ac27 | 946 | ndp->ni_dvp = NULL; |
88a7a62a SL |
947 | /* |
948 | * Truncate inode. The only stuff left | |
949 | * in the directory is "." and "..". The | |
950 | * "." reference is inconsequential since | |
951 | * we're quashing it. The ".." reference | |
952 | * has already been adjusted above. We've | |
953 | * removed the "." reference and the reference | |
954 | * in the parent directory, but there may be | |
955 | * other hard links so decrement by 2 and | |
956 | * worry about them later. | |
957 | */ | |
958 | ip->i_nlink -= 2; | |
7188ac27 KM |
959 | error = itrunc(ip, (u_long)0); |
960 | cache_purge(ITOV(ip)); | |
88a7a62a | 961 | out: |
7188ac27 | 962 | if (ndp->ni_dvp) |
88a7a62a SL |
963 | iput(dp); |
964 | iput(ip); | |
7188ac27 | 965 | return (error); |
88a7a62a SL |
966 | } |
967 | ||
7188ac27 KM |
968 | /* |
969 | * symlink -- make a symbolic link | |
970 | */ | |
971 | ufs_symlink(ndp, vap, target) | |
972 | struct nameidata *ndp; | |
973 | struct vattr *vap; | |
974 | char *target; | |
975 | { | |
976 | struct inode *ip; | |
977 | int error; | |
978 | ||
979 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
980 | if (error) | |
981 | return (error); | |
982 | error = rdwri(UIO_WRITE, ip, target, strlen(target), (off_t)0, | |
983 | UIO_SYSSPACE, ndp->ni_cred, (int *)0); | |
984 | iput(ip); | |
985 | return (error); | |
986 | } | |
987 | ||
988 | /* | |
989 | * Vnode op for read and write | |
990 | */ | |
991 | ufs_readdir(vp, uio, offp, cred) | |
992 | struct vnode *vp; | |
993 | register struct uio *uio; | |
994 | off_t *offp; | |
995 | struct ucred *cred; | |
88a7a62a | 996 | { |
7188ac27 KM |
997 | register struct inode *ip = VTOI(vp); |
998 | int count, error; | |
88a7a62a | 999 | |
7188ac27 KM |
1000 | ILOCK(ip); |
1001 | uio->uio_offset = *offp; | |
1002 | count = uio->uio_resid; | |
1003 | count &= ~(DIRBLKSIZ - 1); | |
1004 | if (vp->v_type != VDIR || uio->uio_iovcnt != 1 || | |
1005 | (count < DIRBLKSIZ) || (uio->uio_offset & (DIRBLKSIZ -1))) { | |
1006 | IUNLOCK(ip); | |
1007 | return (EINVAL); | |
1008 | } | |
1009 | uio->uio_resid = count; | |
1010 | uio->uio_iov->iov_len = count; | |
1011 | error = readip(ip, uio, cred); | |
1012 | *offp += count - uio->uio_resid; | |
1013 | IUNLOCK(ip); | |
1014 | return (error); | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * Return target name of a symbolic link | |
1019 | */ | |
1020 | ufs_readlink(vp, uiop, cred) | |
1021 | struct vnode *vp; | |
1022 | struct uio *uiop; | |
1023 | struct ucred *cred; | |
1024 | { | |
1025 | ||
1026 | return (readip(VTOI(vp), uiop, cred)); | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1031 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1032 | */ | |
1033 | ufs_abortop(ndp) | |
1034 | register struct nameidata *ndp; | |
1035 | { | |
1036 | register struct inode *ip; | |
1037 | ||
1038 | if (ndp->ni_vp) { | |
1039 | ip = VTOI(ndp->ni_vp); | |
1040 | if (ip->i_flag & ILOCKED) | |
1041 | IUNLOCK(ip); | |
1042 | vrele(ndp->ni_vp); | |
8462a185 | 1043 | } |
7188ac27 KM |
1044 | if (ndp->ni_dvp) { |
1045 | ip = VTOI(ndp->ni_dvp); | |
1046 | if (ip->i_flag & ILOCKED) | |
1047 | IUNLOCK(ip); | |
1048 | vrele(ndp->ni_dvp); | |
88a7a62a | 1049 | } |
7188ac27 KM |
1050 | return; |
1051 | } | |
1052 | ||
1053 | ufs_lock(vp) | |
1054 | struct vnode *vp; | |
1055 | { | |
1056 | register struct inode *ip = VTOI(vp); | |
1057 | ||
1058 | ILOCK(ip); | |
1059 | return (0); | |
1060 | } | |
1061 | ||
1062 | ufs_unlock(vp) | |
1063 | struct vnode *vp; | |
1064 | { | |
1065 | register struct inode *ip = VTOI(vp); | |
1066 | ||
1067 | if (!(ip->i_flag & ILOCKED)) | |
1068 | panic("ufs_unlock NOT LOCKED"); | |
1069 | IUNLOCK(ip); | |
1070 | return (0); | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * Get access to bmap | |
1075 | */ | |
1076 | ufs_bmap(vp, bn, vpp, bnp) | |
1077 | struct vnode *vp; | |
1078 | daddr_t bn; | |
1079 | struct vnode **vpp; | |
1080 | daddr_t *bnp; | |
1081 | { | |
1082 | struct inode *ip = VTOI(vp); | |
1083 | ||
1084 | if (vpp != NULL) | |
1085 | *vpp = ip->i_devvp; | |
1086 | if (bnp == NULL) | |
1087 | return (0); | |
1088 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1089 | } |
1090 | ||
1091 | /* | |
7188ac27 | 1092 | * Just call the device strategy routine |
88a7a62a | 1093 | */ |
7188ac27 KM |
1094 | ufs_strategy(bp) |
1095 | register struct buf *bp; | |
88a7a62a | 1096 | { |
7188ac27 KM |
1097 | (*bdevsw[major(bp->b_dev)].d_strategy)(bp); |
1098 | return (0); | |
1099 | } | |
88a7a62a | 1100 | |
7188ac27 KM |
1101 | /* |
1102 | * Make a new file. | |
1103 | */ | |
1104 | maknode(mode, ndp, ipp) | |
1105 | int mode; | |
1106 | register struct nameidata *ndp; | |
1107 | struct inode **ipp; | |
1108 | { | |
1109 | register struct inode *ip; | |
1110 | struct inode *tip; | |
1111 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1112 | ino_t ipref; | |
1113 | int error; | |
1114 | ||
1115 | *ipp = 0; | |
1116 | if ((mode & IFMT) == IFDIR) | |
1117 | ipref = dirpref(pdir->i_fs); | |
1118 | else | |
1119 | ipref = pdir->i_number; | |
1120 | error = ialloc(pdir, ipref, mode, &tip); | |
1121 | if (error) { | |
1122 | iput(pdir); | |
1123 | return (error); | |
1124 | } | |
1125 | ip = tip; | |
1126 | #ifdef QUOTA | |
1127 | if (ip->i_dquot != NODQUOT) | |
1128 | panic("maknode: dquot"); | |
1129 | #endif | |
1130 | ip->i_flag |= IACC|IUPD|ICHG; | |
1131 | if ((mode & IFMT) == 0) | |
1132 | mode |= IFREG; | |
1133 | ip->i_mode = mode; | |
1134 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1135 | ip->i_nlink = 1; | |
1136 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1137 | ip->i_gid = pdir->i_gid; | |
1138 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1139 | suser(ndp->ni_cred, NULL)) | |
1140 | ip->i_mode &= ~ISGID; | |
1141 | #ifdef QUOTA | |
1142 | ip->i_dquot = inoquota(ip); | |
1143 | #endif | |
1144 | ||
1145 | /* | |
1146 | * Make sure inode goes to disk before directory entry. | |
1147 | */ | |
1148 | if ((error = iupdat(ip, &time, &time, 1)) || | |
1149 | (error = direnter(ip, ndp))) { | |
1150 | /* | |
1151 | * Write error occurred trying to update the inode | |
1152 | * or the directory so must deallocate the inode. | |
1153 | */ | |
1154 | ip->i_nlink = 0; | |
1155 | ip->i_flag |= ICHG; | |
1156 | iput(ip); | |
1157 | return (error); | |
1158 | } | |
1159 | *ipp = ip; | |
1160 | return (0); | |
88a7a62a | 1161 | } |