Commit | Line | Data |
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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 | * | |
e8a3816c | 17 | * @(#)ffs_vnops.c 7.19 (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(), | |
e8a3816c | 67 | ufs_reclaim(), |
7188ac27 KM |
68 | ufs_lock(), |
69 | ufs_unlock(), | |
70 | ufs_bmap(), | |
71 | ufs_strategy(); | |
72 | ||
73 | struct vnodeops ufs_vnodeops = { | |
74 | ufs_lookup, | |
75 | ufs_create, | |
76 | ufs_mknod, | |
77 | ufs_open, | |
78 | ufs_close, | |
79 | ufs_access, | |
80 | ufs_getattr, | |
81 | ufs_setattr, | |
82 | ufs_read, | |
83 | ufs_write, | |
84 | ufs_ioctl, | |
85 | ufs_select, | |
86 | ufs_mmap, | |
87 | ufs_fsync, | |
88 | ufs_seek, | |
89 | ufs_remove, | |
90 | ufs_link, | |
91 | ufs_rename, | |
92 | ufs_mkdir, | |
93 | ufs_rmdir, | |
94 | ufs_symlink, | |
95 | ufs_readdir, | |
96 | ufs_readlink, | |
97 | ufs_abortop, | |
98 | ufs_inactive, | |
e8a3816c | 99 | ufs_reclaim, |
7188ac27 KM |
100 | ufs_lock, |
101 | ufs_unlock, | |
102 | ufs_bmap, | |
103 | ufs_strategy, | |
104 | }; | |
105 | ||
106 | enum vtype iftovt_tab[8] = { | |
107 | VNON, VCHR, VDIR, VBLK, VREG, VLNK, VSOCK, VBAD, | |
108 | }; | |
109 | int vttoif_tab[8] = { | |
110 | 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFMT, | |
111 | }; | |
3e78e260 | 112 | |
4f083fd7 | 113 | /* |
7188ac27 | 114 | * Create a regular file |
4f083fd7 | 115 | */ |
7188ac27 KM |
116 | ufs_create(ndp, vap) |
117 | struct nameidata *ndp; | |
118 | struct vattr *vap; | |
3e78e260 | 119 | { |
7188ac27 KM |
120 | struct inode *ip; |
121 | int error; | |
3e78e260 | 122 | |
7188ac27 KM |
123 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
124 | return (error); | |
125 | ndp->ni_vp = ITOV(ip); | |
126 | return (0); | |
3e78e260 BJ |
127 | } |
128 | ||
4f083fd7 | 129 | /* |
7188ac27 | 130 | * Mknod vnode call |
4f083fd7 | 131 | */ |
7188ac27 KM |
132 | /* ARGSUSED */ |
133 | ufs_mknod(ndp, vap, cred) | |
134 | struct nameidata *ndp; | |
135 | struct ucred *cred; | |
136 | struct vattr *vap; | |
3e78e260 | 137 | { |
7188ac27 KM |
138 | struct inode *ip; |
139 | int error; | |
3e78e260 | 140 | |
7188ac27 KM |
141 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
142 | return (error); | |
143 | if (vap->va_rdev) { | |
144 | /* | |
145 | * Want to be able to use this to make badblock | |
146 | * inodes, so don't truncate the dev number. | |
147 | */ | |
148 | ITOV(ip)->v_rdev = ip->i_rdev = vap->va_rdev; | |
149 | ip->i_flag |= IACC|IUPD|ICHG; | |
150 | } | |
7188ac27 KM |
151 | /* |
152 | * Remove inode so that it will be reloaded by iget and | |
153 | * checked to see if it is an alias of an existing entry | |
154 | * in the inode cache. | |
155 | */ | |
156 | remque(ip); | |
157 | ip->i_forw = ip; | |
158 | ip->i_back = ip; | |
9ed9b473 KM |
159 | ITOV(ip)->v_type = VNON; |
160 | iput(ip); | |
7188ac27 | 161 | return (0); |
3e78e260 BJ |
162 | } |
163 | ||
164 | /* | |
7188ac27 KM |
165 | * Open called. |
166 | * | |
167 | * Nothing to do. | |
3e78e260 | 168 | */ |
7188ac27 KM |
169 | /* ARGSUSED */ |
170 | ufs_open(vp, mode, cred) | |
171 | struct vnode *vp; | |
172 | int mode; | |
173 | struct ucred *cred; | |
3e78e260 | 174 | { |
3e78e260 | 175 | |
7188ac27 | 176 | return (0); |
3e78e260 BJ |
177 | } |
178 | ||
179 | /* | |
7188ac27 KM |
180 | * Close called |
181 | * | |
182 | * Update the times on the inode. | |
3e78e260 | 183 | */ |
7188ac27 KM |
184 | /* ARGSUSED */ |
185 | ufs_close(vp, fflag, cred) | |
186 | struct vnode *vp; | |
187 | int fflag; | |
188 | struct ucred *cred; | |
3e78e260 | 189 | { |
7188ac27 | 190 | register struct inode *ip = VTOI(vp); |
3e78e260 | 191 | |
7188ac27 KM |
192 | if (vp->v_count > 1 && !(ip->i_flag & ILOCKED)) |
193 | ITIMES(ip, &time, &time); | |
194 | return (0); | |
3e78e260 BJ |
195 | } |
196 | ||
7188ac27 KM |
197 | ufs_access(vp, mode, cred) |
198 | struct vnode *vp; | |
199 | int mode; | |
200 | struct ucred *cred; | |
3e78e260 | 201 | { |
3e78e260 | 202 | |
7188ac27 | 203 | return (iaccess(VTOI(vp), mode, cred)); |
3e78e260 BJ |
204 | } |
205 | ||
7188ac27 KM |
206 | /* ARGSUSED */ |
207 | ufs_getattr(vp, vap, cred) | |
208 | struct vnode *vp; | |
209 | register struct vattr *vap; | |
210 | struct ucred *cred; | |
3e78e260 | 211 | { |
7188ac27 | 212 | register struct inode *ip = VTOI(vp); |
3e78e260 | 213 | |
7188ac27 | 214 | ITIMES(ip, &time, &time); |
3e78e260 | 215 | /* |
7188ac27 | 216 | * Copy from inode table |
3e78e260 | 217 | */ |
7188ac27 KM |
218 | vap->va_fsid = ip->i_dev; |
219 | vap->va_fileid = ip->i_number; | |
220 | vap->va_mode = ip->i_mode & ~IFMT; | |
221 | vap->va_nlink = ip->i_nlink; | |
222 | vap->va_uid = ip->i_uid; | |
223 | vap->va_gid = ip->i_gid; | |
224 | vap->va_rdev = (dev_t)ip->i_rdev; | |
e8a3816c KM |
225 | vap->va_size = ip->i_din.di_qsize.val[0]; |
226 | vap->va_size1 = ip->i_din.di_qsize.val[1]; | |
7188ac27 | 227 | vap->va_atime.tv_sec = ip->i_atime; |
6ef53d70 | 228 | vap->va_atime.tv_usec = 0; |
7188ac27 | 229 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 230 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 231 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 232 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
233 | vap->va_flags = ip->i_flags; |
234 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
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; | |
8eee8525 | 240 | else |
7188ac27 | 241 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 242 | vap->va_bytes = dbtob(ip->i_blocks); |
7188ac27 KM |
243 | vap->va_bytes1 = -1; |
244 | vap->va_type = vp->v_type; | |
245 | return (0); | |
3e78e260 BJ |
246 | } |
247 | ||
248 | /* | |
7188ac27 | 249 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 250 | */ |
7188ac27 KM |
251 | ufs_setattr(vp, vap, cred) |
252 | register struct vnode *vp; | |
253 | register struct vattr *vap; | |
254 | register struct ucred *cred; | |
3e78e260 | 255 | { |
7188ac27 KM |
256 | register struct inode *ip = VTOI(vp); |
257 | int error = 0; | |
b4d1aee9 | 258 | |
7188ac27 KM |
259 | /* |
260 | * Check for unsetable attributes. | |
261 | */ | |
262 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
263 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
264 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 265 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 266 | return (EINVAL); |
b4d1aee9 | 267 | } |
7188ac27 KM |
268 | /* |
269 | * Go through the fields and update iff not VNOVAL. | |
270 | */ | |
271 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
272 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
273 | return (error); | |
274 | if (vap->va_size != VNOVAL) { | |
275 | if (vp->v_type == VDIR) | |
276 | return (EISDIR); | |
7188ac27 KM |
277 | if (error = itrunc(ip, vap->va_size)) |
278 | return (error); | |
3e78e260 | 279 | } |
7188ac27 | 280 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
281 | if (cred->cr_uid != ip->i_uid && |
282 | (error = suser(cred, &u.u_acflag))) | |
283 | return (error); | |
7188ac27 KM |
284 | if (vap->va_atime.tv_sec != VNOVAL) |
285 | ip->i_flag |= IACC; | |
286 | if (vap->va_mtime.tv_sec != VNOVAL) | |
287 | ip->i_flag |= IUPD; | |
288 | ip->i_flag |= ICHG; | |
289 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
290 | return (error); | |
5485e062 | 291 | } |
7188ac27 KM |
292 | if (vap->va_mode != (u_short)VNOVAL) |
293 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
294 | if (vap->va_flags != VNOVAL) { |
295 | if (cred->cr_uid != ip->i_uid && | |
296 | (error = suser(cred, &u.u_acflag))) | |
297 | return (error); | |
298 | if (cred->cr_uid == 0) { | |
299 | ip->i_flags = vap->va_flags; | |
300 | } else { | |
301 | ip->i_flags &= 0xffff0000; | |
302 | ip->i_flags |= (vap->va_flags & 0xffff); | |
303 | } | |
304 | ip->i_flag |= ICHG; | |
305 | } | |
7188ac27 | 306 | return (error); |
528f664c SL |
307 | } |
308 | ||
4f083fd7 SL |
309 | /* |
310 | * Change the mode on a file. | |
311 | * Inode must be locked before calling. | |
312 | */ | |
7188ac27 KM |
313 | chmod1(vp, mode, cred) |
314 | register struct vnode *vp; | |
528f664c | 315 | register int mode; |
7188ac27 | 316 | struct ucred *cred; |
528f664c | 317 | { |
7188ac27 | 318 | register struct inode *ip = VTOI(vp); |
de412887 | 319 | int error; |
197da11b | 320 | |
de412887 KM |
321 | if (cred->cr_uid != ip->i_uid && |
322 | (error = suser(cred, &u.u_acflag))) | |
323 | return (error); | |
3e78e260 | 324 | ip->i_mode &= ~07777; |
7188ac27 KM |
325 | if (cred->cr_uid) { |
326 | if (vp->v_type != VDIR) | |
47af7174 | 327 | mode &= ~ISVTX; |
7188ac27 | 328 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 329 | mode &= ~ISGID; |
f94ceb3b | 330 | } |
7188ac27 | 331 | ip->i_mode |= mode & 07777; |
3e78e260 | 332 | ip->i_flag |= ICHG; |
7188ac27 KM |
333 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
334 | xrele(vp); | |
47af7174 | 335 | return (0); |
5485e062 BJ |
336 | } |
337 | ||
528f664c SL |
338 | /* |
339 | * Perform chown operation on inode ip; | |
340 | * inode must be locked prior to call. | |
341 | */ | |
7188ac27 KM |
342 | chown1(vp, uid, gid, cred) |
343 | register struct vnode *vp; | |
344 | uid_t uid; | |
345 | gid_t gid; | |
346 | struct ucred *cred; | |
528f664c | 347 | { |
7188ac27 | 348 | register struct inode *ip = VTOI(vp); |
528f664c SL |
349 | #ifdef QUOTA |
350 | register long change; | |
bb1b75f4 | 351 | #endif |
7188ac27 | 352 | int error; |
528f664c | 353 | |
7188ac27 | 354 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 355 | uid = ip->i_uid; |
7188ac27 | 356 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 357 | gid = ip->i_gid; |
18b0bce6 KB |
358 | /* |
359 | * If we don't own the file, are trying to change the owner | |
360 | * of the file, or are not a member of the target group, | |
361 | * the caller must be superuser or the call fails. | |
362 | */ | |
7188ac27 KM |
363 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
364 | !groupmember((gid_t)gid, cred)) && | |
365 | (error = suser(cred, &u.u_acflag))) | |
366 | return (error); | |
bb1b75f4 | 367 | #ifdef QUOTA |
3809bf69 | 368 | if (ip->i_uid == uid) /* this just speeds things a little */ |
0a77f278 | 369 | change = 0; |
2e073567 SL |
370 | else |
371 | change = ip->i_blocks; | |
372 | (void) chkdq(ip, -change, 1); | |
373 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 374 | dqrele(ip->i_dquot); |
f94ceb3b | 375 | #endif |
b440c2b9 KM |
376 | if (ip->i_uid != uid && cred->cr_uid != 0) |
377 | ip->i_mode &= ~ISUID; | |
378 | if (ip->i_gid != gid && cred->cr_uid != 0) | |
379 | ip->i_mode &= ~ISGID; | |
bb1b75f4 SL |
380 | ip->i_uid = uid; |
381 | ip->i_gid = gid; | |
3e78e260 | 382 | ip->i_flag |= ICHG; |
528f664c | 383 | #ifdef QUOTA |
0a77f278 | 384 | ip->i_dquot = inoquota(ip); |
2e073567 | 385 | (void) chkdq(ip, change, 1); |
8011f5df | 386 | (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1); |
2e073567 SL |
387 | return (u.u_error); /* should == 0 ALWAYS !! */ |
388 | #else | |
bb1b75f4 | 389 | return (0); |
2e073567 | 390 | #endif |
d67a03eb BJ |
391 | } |
392 | ||
7188ac27 KM |
393 | /* ARGSUSED */ |
394 | ufs_ioctl(vp, com, data, fflag, cred) | |
395 | struct vnode *vp; | |
396 | int com; | |
397 | caddr_t data; | |
398 | int fflag; | |
399 | struct ucred *cred; | |
bb1b75f4 | 400 | { |
bb1b75f4 | 401 | |
7188ac27 KM |
402 | printf("ufs_ioctl called with type %d\n", vp->v_type); |
403 | return (ENOTTY); | |
404 | } | |
405 | ||
406 | /* ARGSUSED */ | |
407 | ufs_select(vp, which, cred) | |
408 | struct vnode *vp; | |
409 | int which; | |
410 | struct ucred *cred; | |
411 | { | |
412 | ||
413 | printf("ufs_select called with type %d\n", vp->v_type); | |
414 | return (1); /* XXX */ | |
bb1b75f4 | 415 | } |
d67a03eb | 416 | |
4f083fd7 | 417 | /* |
7188ac27 KM |
418 | * Mmap a file |
419 | * | |
420 | * NB Currently unsupported. | |
4f083fd7 | 421 | */ |
7188ac27 KM |
422 | /* ARGSUSED */ |
423 | ufs_mmap(vp, fflags, cred) | |
424 | struct vnode *vp; | |
425 | int fflags; | |
426 | struct ucred *cred; | |
d67a03eb | 427 | { |
d67a03eb | 428 | |
7188ac27 | 429 | return (EINVAL); |
d67a03eb | 430 | } |
64d3a787 | 431 | |
4f083fd7 | 432 | /* |
7188ac27 | 433 | * Synch an open file. |
4f083fd7 | 434 | */ |
7188ac27 KM |
435 | /* ARGSUSED */ |
436 | ufs_fsync(vp, fflags, cred) | |
437 | struct vnode *vp; | |
438 | int fflags; | |
439 | struct ucred *cred; | |
528f664c | 440 | { |
7188ac27 KM |
441 | register struct inode *ip = VTOI(vp); |
442 | int error; | |
443 | ||
444 | ILOCK(ip); | |
445 | if (fflags&FWRITE) | |
446 | ip->i_flag |= ICHG; | |
447 | error = syncip(ip); | |
448 | IUNLOCK(ip); | |
449 | return (error); | |
528f664c SL |
450 | } |
451 | ||
4f083fd7 | 452 | /* |
7188ac27 KM |
453 | * Seek on a file |
454 | * | |
455 | * Nothing to do, so just return. | |
4f083fd7 | 456 | */ |
7188ac27 KM |
457 | /* ARGSUSED */ |
458 | ufs_seek(vp, oldoff, newoff, cred) | |
459 | struct vnode *vp; | |
460 | off_t oldoff, newoff; | |
461 | struct ucred *cred; | |
528f664c | 462 | { |
7188ac27 KM |
463 | |
464 | return (0); | |
465 | } | |
466 | ||
467 | /* | |
468 | * ufs remove | |
469 | * Hard to avoid races here, especially | |
470 | * in unlinking directories. | |
471 | */ | |
472 | ufs_remove(ndp) | |
473 | struct nameidata *ndp; | |
474 | { | |
475 | register struct inode *ip, *dp; | |
476 | int error; | |
477 | ||
478 | ip = VTOI(ndp->ni_vp); | |
479 | dp = VTOI(ndp->ni_dvp); | |
480 | error = dirremove(ndp); | |
481 | if (!error) { | |
482 | ip->i_nlink--; | |
483 | ip->i_flag |= ICHG; | |
528f664c | 484 | } |
7188ac27 KM |
485 | if (dp == ip) |
486 | vrele(ITOV(ip)); | |
487 | else | |
488 | iput(ip); | |
489 | iput(dp); | |
490 | return (error); | |
4f083fd7 SL |
491 | } |
492 | ||
493 | /* | |
7188ac27 | 494 | * link vnode call |
4f083fd7 | 495 | */ |
7188ac27 KM |
496 | ufs_link(vp, ndp) |
497 | register struct vnode *vp; | |
498 | register struct nameidata *ndp; | |
4f083fd7 | 499 | { |
7188ac27 KM |
500 | register struct inode *ip = VTOI(vp); |
501 | int error; | |
4f083fd7 | 502 | |
7188ac27 KM |
503 | if (ndp->ni_dvp != vp) |
504 | ILOCK(ip); | |
505 | if (ip->i_nlink == LINK_MAX - 1) { | |
506 | error = EMLINK; | |
507 | goto out; | |
508 | } | |
509 | ip->i_nlink++; | |
510 | ip->i_flag |= ICHG; | |
511 | error = iupdat(ip, &time, &time, 1); | |
512 | if (!error) | |
513 | error = direnter(ip, ndp); | |
514 | out: | |
515 | if (ndp->ni_dvp != vp) | |
516 | IUNLOCK(ip); | |
517 | if (error) { | |
518 | ip->i_nlink--; | |
82252d2b | 519 | ip->i_flag |= ICHG; |
7188ac27 KM |
520 | } |
521 | return (error); | |
528f664c SL |
522 | } |
523 | ||
4f083fd7 SL |
524 | /* |
525 | * Rename system call. | |
526 | * rename("foo", "bar"); | |
527 | * is essentially | |
528 | * unlink("bar"); | |
529 | * link("foo", "bar"); | |
530 | * unlink("foo"); | |
531 | * but ``atomically''. Can't do full commit without saving state in the | |
532 | * inode on disk which isn't feasible at this time. Best we can do is | |
533 | * always guarantee the target exists. | |
534 | * | |
535 | * Basic algorithm is: | |
536 | * | |
537 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 538 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
539 | * from underneath us while we work (it may be truncated by |
540 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
541 | * 2) Link source to destination. If destination already exists, |
542 | * delete it first. | |
68f21562 KM |
543 | * 3) Unlink source reference to inode if still around. If a |
544 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
545 | * is different from the source, patch the ".." entry in the |
546 | * directory. | |
4f083fd7 | 547 | */ |
7188ac27 KM |
548 | ufs_rename(fndp, tndp) |
549 | register struct nameidata *fndp, *tndp; | |
528f664c | 550 | { |
4f083fd7 | 551 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
552 | struct dirtemplate dirbuf; |
553 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 554 | int error = 0; |
4f083fd7 | 555 | |
7188ac27 KM |
556 | dp = VTOI(fndp->ni_dvp); |
557 | ip = VTOI(fndp->ni_vp); | |
558 | ILOCK(ip); | |
4f083fd7 | 559 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 560 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 561 | |
4f083fd7 | 562 | /* |
046f18d1 | 563 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 564 | */ |
7188ac27 KM |
565 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
566 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
567 | IUNLOCK(ip); | |
568 | ufs_abortop(fndp); | |
569 | ufs_abortop(tndp); | |
570 | return (EINVAL); | |
4f083fd7 | 571 | } |
68f21562 | 572 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
573 | oldparent = dp->i_number; |
574 | doingdirectory++; | |
575 | } | |
7188ac27 | 576 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
577 | |
578 | /* | |
579 | * 1) Bump link count while we're moving stuff | |
580 | * around. If we crash somewhere before | |
581 | * completing our work, the link count | |
582 | * may be wrong, but correctable. | |
583 | */ | |
584 | ip->i_nlink++; | |
585 | ip->i_flag |= ICHG; | |
7188ac27 | 586 | error = iupdat(ip, &time, &time, 1); |
a388503d | 587 | IUNLOCK(ip); |
4f083fd7 SL |
588 | |
589 | /* | |
590 | * When the target exists, both the directory | |
7188ac27 | 591 | * and target vnodes are returned locked. |
4f083fd7 | 592 | */ |
7188ac27 KM |
593 | dp = VTOI(tndp->ni_dvp); |
594 | xp = NULL; | |
595 | if (tndp->ni_vp) | |
596 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
597 | /* |
598 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
599 | * parent) then the source directory must not be in the |
600 | * directory heirarchy above the target, as this would | |
601 | * orphan everything below the source directory. Also | |
602 | * the user must have write permission in the source so | |
603 | * as to be able to change "..". We must repeat the call | |
604 | * to namei, as the parent directory is unlocked by the | |
605 | * call to checkpath(). | |
046f18d1 | 606 | */ |
68f21562 KM |
607 | if (oldparent != dp->i_number) |
608 | newparent = dp->i_number; | |
609 | if (doingdirectory && newparent) { | |
7188ac27 | 610 | if (error = iaccess(ip, IWRITE, tndp->ni_cred)) |
81552f0f | 611 | goto bad; |
7188ac27 | 612 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 613 | do { |
7188ac27 | 614 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 615 | if (xp != NULL) |
79cf21e2 | 616 | iput(xp); |
7188ac27 | 617 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 618 | goto out; |
7188ac27 | 619 | if (error = namei(tndp)) |
81552f0f | 620 | goto out; |
7188ac27 KM |
621 | xp = NULL; |
622 | if (tndp->ni_vp) | |
623 | xp = VTOI(tndp->ni_vp); | |
624 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 625 | } |
4f083fd7 SL |
626 | /* |
627 | * 2) If target doesn't exist, link the target | |
628 | * to the source and unlink the source. | |
629 | * Otherwise, rewrite the target directory | |
630 | * entry to reference the source inode and | |
631 | * expunge the original entry's existence. | |
632 | */ | |
4f083fd7 | 633 | if (xp == NULL) { |
7188ac27 KM |
634 | if (dp->i_dev != ip->i_dev) |
635 | panic("rename: EXDEV"); | |
4f083fd7 | 636 | /* |
68f21562 KM |
637 | * Account for ".." in new directory. |
638 | * When source and destination have the same | |
639 | * parent we don't fool with the link count. | |
4f083fd7 | 640 | */ |
68f21562 | 641 | if (doingdirectory && newparent) { |
4f083fd7 SL |
642 | dp->i_nlink++; |
643 | dp->i_flag |= ICHG; | |
7188ac27 | 644 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 645 | } |
7188ac27 | 646 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
647 | goto out; |
648 | } else { | |
7188ac27 KM |
649 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
650 | panic("rename: EXDEV"); | |
e69c3c9c SL |
651 | /* |
652 | * Short circuit rename(foo, foo). | |
653 | */ | |
654 | if (xp->i_number == ip->i_number) | |
7188ac27 | 655 | panic("rename: same file"); |
80cee150 JB |
656 | /* |
657 | * If the parent directory is "sticky", then the user must | |
658 | * own the parent directory, or the destination of the rename, | |
659 | * otherwise the destination may not be changed (except by | |
660 | * root). This implements append-only directories. | |
661 | */ | |
7188ac27 KM |
662 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
663 | tndp->ni_cred->cr_uid != dp->i_uid && | |
664 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
665 | error = EPERM; |
666 | goto bad; | |
667 | } | |
4f083fd7 | 668 | /* |
a5390dce SL |
669 | * Target must be empty if a directory |
670 | * and have no links to it. | |
4f083fd7 SL |
671 | * Also, insure source and target are |
672 | * compatible (both directories, or both | |
673 | * not directories). | |
674 | */ | |
675 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
676 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
677 | xp->i_nlink > 2) { | |
a5390dce | 678 | error = ENOTEMPTY; |
4f083fd7 SL |
679 | goto bad; |
680 | } | |
681 | if (!doingdirectory) { | |
a5390dce | 682 | error = ENOTDIR; |
4f083fd7 SL |
683 | goto bad; |
684 | } | |
7188ac27 | 685 | cache_purge(ITOV(dp)); |
4f083fd7 | 686 | } else if (doingdirectory) { |
a5390dce | 687 | error = EISDIR; |
4f083fd7 SL |
688 | goto bad; |
689 | } | |
7188ac27 KM |
690 | if (error = dirrewrite(dp, ip, tndp)) |
691 | goto bad; | |
692 | vput(ITOV(dp)); | |
4f083fd7 | 693 | /* |
a5390dce SL |
694 | * Adjust the link count of the target to |
695 | * reflect the dirrewrite above. If this is | |
696 | * a directory it is empty and there are | |
697 | * no links to it, so we can squash the inode and | |
698 | * any space associated with it. We disallowed | |
699 | * renaming over top of a directory with links to | |
68f21562 KM |
700 | * it above, as the remaining link would point to |
701 | * a directory without "." or ".." entries. | |
4f083fd7 | 702 | */ |
a5390dce | 703 | xp->i_nlink--; |
4f083fd7 | 704 | if (doingdirectory) { |
a5390dce SL |
705 | if (--xp->i_nlink != 0) |
706 | panic("rename: linked directory"); | |
7188ac27 | 707 | error = itrunc(xp, (u_long)0); |
a5390dce | 708 | } |
4f083fd7 | 709 | xp->i_flag |= ICHG; |
88d931ba | 710 | iput(xp); |
31db12cb | 711 | xp = NULL; |
4f083fd7 SL |
712 | } |
713 | ||
714 | /* | |
715 | * 3) Unlink the source. | |
716 | */ | |
7188ac27 KM |
717 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
718 | (void)namei(fndp); | |
719 | if (fndp->ni_vp != NULL) { | |
720 | xp = VTOI(fndp->ni_vp); | |
721 | dp = VTOI(fndp->ni_dvp); | |
722 | } else { | |
79cf21e2 KM |
723 | if (fndp->ni_dvp != NULL) |
724 | vput(fndp->ni_dvp); | |
7188ac27 | 725 | xp = NULL; |
4f1a9037 | 726 | dp = NULL; |
7188ac27 | 727 | } |
4f083fd7 | 728 | /* |
7188ac27 | 729 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
730 | * changed while the new name has been entered. If the source is |
731 | * a file then the entry may have been unlinked or renamed. In | |
732 | * either case there is no further work to be done. If the source | |
733 | * is a directory then it cannot have been rmdir'ed; its link | |
734 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 735 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 736 | * rename. |
4f083fd7 | 737 | */ |
4f1a9037 | 738 | if (xp != ip) { |
68f21562 | 739 | if (doingdirectory) |
4f1a9037 | 740 | panic("rename: lost dir entry"); |
68f21562 | 741 | } else { |
4f083fd7 | 742 | /* |
68f21562 KM |
743 | * If the source is a directory with a |
744 | * new parent, the link count of the old | |
745 | * parent directory must be decremented | |
746 | * and ".." set to point to the new parent. | |
4f083fd7 | 747 | */ |
68f21562 | 748 | if (doingdirectory && newparent) { |
4f083fd7 SL |
749 | dp->i_nlink--; |
750 | dp->i_flag |= ICHG; | |
68f21562 | 751 | error = rdwri(UIO_READ, xp, (caddr_t)&dirbuf, |
7188ac27 | 752 | sizeof (struct dirtemplate), (off_t)0, |
93e273b9 | 753 | UIO_SYSSPACE, tndp->ni_cred, (int *)0); |
68f21562 KM |
754 | if (error == 0) { |
755 | if (dirbuf.dotdot_namlen != 2 || | |
756 | dirbuf.dotdot_name[0] != '.' || | |
757 | dirbuf.dotdot_name[1] != '.') { | |
758 | printf("rename: mangled dir\n"); | |
759 | } else { | |
760 | dirbuf.dotdot_ino = newparent; | |
761 | (void) rdwri(UIO_WRITE, xp, | |
762 | (caddr_t)&dirbuf, | |
763 | sizeof (struct dirtemplate), | |
93e273b9 | 764 | (off_t)0, UIO_SYSSPACE, |
7188ac27 KM |
765 | tndp->ni_cred, (int *)0); |
766 | cache_purge(ITOV(dp)); | |
68f21562 KM |
767 | } |
768 | } | |
4f083fd7 | 769 | } |
7188ac27 KM |
770 | error = dirremove(fndp); |
771 | if (!error) { | |
68f21562 KM |
772 | xp->i_nlink--; |
773 | xp->i_flag |= ICHG; | |
4f083fd7 | 774 | } |
68f21562 | 775 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 776 | } |
4f083fd7 | 777 | if (dp) |
7188ac27 | 778 | vput(ITOV(dp)); |
68f21562 | 779 | if (xp) |
7188ac27 KM |
780 | vput(ITOV(xp)); |
781 | vrele(ITOV(ip)); | |
782 | return (error); | |
a5390dce | 783 | |
4f083fd7 | 784 | bad: |
4f083fd7 | 785 | if (xp) |
7188ac27 KM |
786 | vput(ITOV(xp)); |
787 | vput(ITOV(dp)); | |
4f083fd7 SL |
788 | out: |
789 | ip->i_nlink--; | |
790 | ip->i_flag |= ICHG; | |
7188ac27 KM |
791 | vrele(ITOV(ip)); |
792 | return (error); | |
64d3a787 | 793 | } |
88a7a62a SL |
794 | |
795 | /* | |
796 | * A virgin directory (no blushing please). | |
797 | */ | |
798 | struct dirtemplate mastertemplate = { | |
799 | 0, 12, 1, ".", | |
800 | 0, DIRBLKSIZ - 12, 2, ".." | |
801 | }; | |
802 | ||
803 | /* | |
804 | * Mkdir system call | |
805 | */ | |
7188ac27 KM |
806 | ufs_mkdir(ndp, vap) |
807 | struct nameidata *ndp; | |
808 | struct vattr *vap; | |
88a7a62a | 809 | { |
88a7a62a | 810 | register struct inode *ip, *dp; |
7188ac27 KM |
811 | struct inode *tip; |
812 | struct vnode *dvp; | |
88a7a62a | 813 | struct dirtemplate dirtemplate; |
7188ac27 KM |
814 | int error; |
815 | int dmode; | |
816 | ||
817 | dvp = ndp->ni_dvp; | |
818 | dp = VTOI(dvp); | |
819 | dmode = vap->va_mode&0777; | |
820 | dmode |= IFDIR; | |
88a7a62a SL |
821 | /* |
822 | * Must simulate part of maknode here | |
823 | * in order to acquire the inode, but | |
824 | * not have it entered in the parent | |
825 | * directory. The entry is made later | |
826 | * after writing "." and ".." entries out. | |
827 | */ | |
7188ac27 KM |
828 | error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip); |
829 | if (error) { | |
88a7a62a | 830 | iput(dp); |
7188ac27 | 831 | return (error); |
88a7a62a | 832 | } |
7188ac27 | 833 | ip = tip; |
88a7a62a SL |
834 | #ifdef QUOTA |
835 | if (ip->i_dquot != NODQUOT) | |
836 | panic("mkdir: dquot"); | |
837 | #endif | |
838 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
839 | ip->i_mode = dmode; |
840 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 841 | ip->i_nlink = 2; |
7188ac27 | 842 | ip->i_uid = ndp->ni_cred->cr_uid; |
88a7a62a SL |
843 | ip->i_gid = dp->i_gid; |
844 | #ifdef QUOTA | |
845 | ip->i_dquot = inoquota(ip); | |
846 | #endif | |
7188ac27 | 847 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
848 | |
849 | /* | |
850 | * Bump link count in parent directory | |
851 | * to reflect work done below. Should | |
852 | * be done before reference is created | |
853 | * so reparation is possible if we crash. | |
854 | */ | |
855 | dp->i_nlink++; | |
856 | dp->i_flag |= ICHG; | |
7188ac27 | 857 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
858 | |
859 | /* | |
860 | * Initialize directory with "." | |
861 | * and ".." from static template. | |
862 | */ | |
863 | dirtemplate = mastertemplate; | |
864 | dirtemplate.dot_ino = ip->i_number; | |
865 | dirtemplate.dotdot_ino = dp->i_number; | |
7188ac27 KM |
866 | error = rdwri(UIO_WRITE, ip, (caddr_t)&dirtemplate, |
867 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, | |
868 | ndp->ni_cred, (int *)0); | |
869 | if (error) { | |
88a7a62a SL |
870 | dp->i_nlink--; |
871 | dp->i_flag |= ICHG; | |
872 | goto bad; | |
873 | } | |
7188ac27 KM |
874 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
875 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
876 | else |
877 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
878 | /* |
879 | * Directory all set up, now | |
880 | * install the entry for it in | |
881 | * the parent directory. | |
882 | */ | |
7188ac27 | 883 | error = direnter(ip, ndp); |
88a7a62a | 884 | dp = NULL; |
7188ac27 | 885 | if (error) { |
715baff1 | 886 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
887 | error = namei(ndp); |
888 | if (!error) { | |
889 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
890 | dp->i_nlink--; |
891 | dp->i_flag |= ICHG; | |
892 | } | |
893 | } | |
894 | bad: | |
895 | /* | |
896 | * No need to do an explicit itrunc here, | |
7188ac27 | 897 | * vrele will do this for us because we set |
88a7a62a SL |
898 | * the link count to 0. |
899 | */ | |
7188ac27 | 900 | if (error) { |
88a7a62a SL |
901 | ip->i_nlink = 0; |
902 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
903 | iput(ip); |
904 | } else | |
905 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
906 | if (dp) |
907 | iput(dp); | |
7188ac27 | 908 | return (error); |
88a7a62a SL |
909 | } |
910 | ||
911 | /* | |
912 | * Rmdir system call. | |
913 | */ | |
7188ac27 KM |
914 | ufs_rmdir(ndp) |
915 | register struct nameidata *ndp; | |
88a7a62a | 916 | { |
88a7a62a | 917 | register struct inode *ip, *dp; |
7188ac27 KM |
918 | int error = 0; |
919 | ||
920 | ip = VTOI(ndp->ni_vp); | |
921 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
922 | /* |
923 | * No rmdir "." please. | |
924 | */ | |
925 | if (dp == ip) { | |
7188ac27 | 926 | vrele(ITOV(dp)); |
88a7a62a | 927 | iput(ip); |
7188ac27 | 928 | return (EINVAL); |
88a7a62a SL |
929 | } |
930 | /* | |
931 | * Verify the directory is empty (and valid). | |
932 | * (Rmdir ".." won't be valid since | |
933 | * ".." will contain a reference to | |
934 | * the current directory and thus be | |
935 | * non-empty.) | |
936 | */ | |
7188ac27 KM |
937 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
938 | error = ENOTEMPTY; | |
88a7a62a SL |
939 | goto out; |
940 | } | |
941 | /* | |
942 | * Delete reference to directory before purging | |
943 | * inode. If we crash in between, the directory | |
944 | * will be reattached to lost+found, | |
945 | */ | |
7188ac27 | 946 | if (error = dirremove(ndp)) |
88a7a62a SL |
947 | goto out; |
948 | dp->i_nlink--; | |
949 | dp->i_flag |= ICHG; | |
7188ac27 | 950 | cache_purge(ITOV(dp)); |
88a7a62a | 951 | iput(dp); |
7188ac27 | 952 | ndp->ni_dvp = NULL; |
88a7a62a SL |
953 | /* |
954 | * Truncate inode. The only stuff left | |
955 | * in the directory is "." and "..". The | |
956 | * "." reference is inconsequential since | |
957 | * we're quashing it. The ".." reference | |
958 | * has already been adjusted above. We've | |
959 | * removed the "." reference and the reference | |
960 | * in the parent directory, but there may be | |
961 | * other hard links so decrement by 2 and | |
962 | * worry about them later. | |
963 | */ | |
964 | ip->i_nlink -= 2; | |
7188ac27 KM |
965 | error = itrunc(ip, (u_long)0); |
966 | cache_purge(ITOV(ip)); | |
88a7a62a | 967 | out: |
7188ac27 | 968 | if (ndp->ni_dvp) |
88a7a62a SL |
969 | iput(dp); |
970 | iput(ip); | |
7188ac27 | 971 | return (error); |
88a7a62a SL |
972 | } |
973 | ||
7188ac27 KM |
974 | /* |
975 | * symlink -- make a symbolic link | |
976 | */ | |
977 | ufs_symlink(ndp, vap, target) | |
978 | struct nameidata *ndp; | |
979 | struct vattr *vap; | |
980 | char *target; | |
981 | { | |
982 | struct inode *ip; | |
983 | int error; | |
984 | ||
985 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
986 | if (error) | |
987 | return (error); | |
988 | error = rdwri(UIO_WRITE, ip, target, strlen(target), (off_t)0, | |
989 | UIO_SYSSPACE, ndp->ni_cred, (int *)0); | |
990 | iput(ip); | |
991 | return (error); | |
992 | } | |
993 | ||
994 | /* | |
995 | * Vnode op for read and write | |
996 | */ | |
997 | ufs_readdir(vp, uio, offp, cred) | |
998 | struct vnode *vp; | |
999 | register struct uio *uio; | |
1000 | off_t *offp; | |
1001 | struct ucred *cred; | |
88a7a62a | 1002 | { |
7188ac27 KM |
1003 | register struct inode *ip = VTOI(vp); |
1004 | int count, error; | |
88a7a62a | 1005 | |
7188ac27 KM |
1006 | ILOCK(ip); |
1007 | uio->uio_offset = *offp; | |
1008 | count = uio->uio_resid; | |
1009 | count &= ~(DIRBLKSIZ - 1); | |
1010 | if (vp->v_type != VDIR || uio->uio_iovcnt != 1 || | |
1011 | (count < DIRBLKSIZ) || (uio->uio_offset & (DIRBLKSIZ -1))) { | |
1012 | IUNLOCK(ip); | |
1013 | return (EINVAL); | |
1014 | } | |
1015 | uio->uio_resid = count; | |
1016 | uio->uio_iov->iov_len = count; | |
1017 | error = readip(ip, uio, cred); | |
1018 | *offp += count - uio->uio_resid; | |
1019 | IUNLOCK(ip); | |
1020 | return (error); | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * Return target name of a symbolic link | |
1025 | */ | |
1026 | ufs_readlink(vp, uiop, cred) | |
1027 | struct vnode *vp; | |
1028 | struct uio *uiop; | |
1029 | struct ucred *cred; | |
1030 | { | |
1031 | ||
1032 | return (readip(VTOI(vp), uiop, cred)); | |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1037 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1038 | */ | |
1039 | ufs_abortop(ndp) | |
1040 | register struct nameidata *ndp; | |
1041 | { | |
1042 | register struct inode *ip; | |
1043 | ||
1044 | if (ndp->ni_vp) { | |
1045 | ip = VTOI(ndp->ni_vp); | |
1046 | if (ip->i_flag & ILOCKED) | |
1047 | IUNLOCK(ip); | |
1048 | vrele(ndp->ni_vp); | |
8462a185 | 1049 | } |
7188ac27 KM |
1050 | if (ndp->ni_dvp) { |
1051 | ip = VTOI(ndp->ni_dvp); | |
1052 | if (ip->i_flag & ILOCKED) | |
1053 | IUNLOCK(ip); | |
1054 | vrele(ndp->ni_dvp); | |
88a7a62a | 1055 | } |
7188ac27 KM |
1056 | return; |
1057 | } | |
1058 | ||
1059 | ufs_lock(vp) | |
1060 | struct vnode *vp; | |
1061 | { | |
1062 | register struct inode *ip = VTOI(vp); | |
1063 | ||
1064 | ILOCK(ip); | |
1065 | return (0); | |
1066 | } | |
1067 | ||
1068 | ufs_unlock(vp) | |
1069 | struct vnode *vp; | |
1070 | { | |
1071 | register struct inode *ip = VTOI(vp); | |
1072 | ||
1073 | if (!(ip->i_flag & ILOCKED)) | |
1074 | panic("ufs_unlock NOT LOCKED"); | |
1075 | IUNLOCK(ip); | |
1076 | return (0); | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Get access to bmap | |
1081 | */ | |
1082 | ufs_bmap(vp, bn, vpp, bnp) | |
1083 | struct vnode *vp; | |
1084 | daddr_t bn; | |
1085 | struct vnode **vpp; | |
1086 | daddr_t *bnp; | |
1087 | { | |
1088 | struct inode *ip = VTOI(vp); | |
1089 | ||
1090 | if (vpp != NULL) | |
1091 | *vpp = ip->i_devvp; | |
1092 | if (bnp == NULL) | |
1093 | return (0); | |
1094 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1095 | } |
1096 | ||
1097 | /* | |
7188ac27 | 1098 | * Just call the device strategy routine |
88a7a62a | 1099 | */ |
7188ac27 KM |
1100 | ufs_strategy(bp) |
1101 | register struct buf *bp; | |
88a7a62a | 1102 | { |
7188ac27 KM |
1103 | (*bdevsw[major(bp->b_dev)].d_strategy)(bp); |
1104 | return (0); | |
1105 | } | |
88a7a62a | 1106 | |
7188ac27 KM |
1107 | /* |
1108 | * Make a new file. | |
1109 | */ | |
1110 | maknode(mode, ndp, ipp) | |
1111 | int mode; | |
1112 | register struct nameidata *ndp; | |
1113 | struct inode **ipp; | |
1114 | { | |
1115 | register struct inode *ip; | |
1116 | struct inode *tip; | |
1117 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1118 | ino_t ipref; | |
1119 | int error; | |
1120 | ||
1121 | *ipp = 0; | |
1122 | if ((mode & IFMT) == IFDIR) | |
1123 | ipref = dirpref(pdir->i_fs); | |
1124 | else | |
1125 | ipref = pdir->i_number; | |
1126 | error = ialloc(pdir, ipref, mode, &tip); | |
1127 | if (error) { | |
1128 | iput(pdir); | |
1129 | return (error); | |
1130 | } | |
1131 | ip = tip; | |
1132 | #ifdef QUOTA | |
1133 | if (ip->i_dquot != NODQUOT) | |
1134 | panic("maknode: dquot"); | |
1135 | #endif | |
1136 | ip->i_flag |= IACC|IUPD|ICHG; | |
1137 | if ((mode & IFMT) == 0) | |
1138 | mode |= IFREG; | |
1139 | ip->i_mode = mode; | |
1140 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1141 | ip->i_nlink = 1; | |
1142 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1143 | ip->i_gid = pdir->i_gid; | |
1144 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1145 | suser(ndp->ni_cred, NULL)) | |
1146 | ip->i_mode &= ~ISGID; | |
1147 | #ifdef QUOTA | |
1148 | ip->i_dquot = inoquota(ip); | |
1149 | #endif | |
1150 | ||
1151 | /* | |
1152 | * Make sure inode goes to disk before directory entry. | |
1153 | */ | |
1154 | if ((error = iupdat(ip, &time, &time, 1)) || | |
1155 | (error = direnter(ip, ndp))) { | |
1156 | /* | |
1157 | * Write error occurred trying to update the inode | |
1158 | * or the directory so must deallocate the inode. | |
1159 | */ | |
1160 | ip->i_nlink = 0; | |
1161 | ip->i_flag |= ICHG; | |
1162 | iput(ip); | |
1163 | return (error); | |
1164 | } | |
1165 | *ipp = ip; | |
1166 | return (0); | |
88a7a62a | 1167 | } |