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 | * | |
de412887 | 17 | * @(#)ufs_vnops.c 7.9 (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; | |
225 | vap->va_mtime.tv_sec = ip->i_mtime; | |
226 | vap->va_ctime.tv_sec = ip->i_ctime; | |
227 | /* this doesn't belong here */ | |
228 | if (vp->v_type == VBLK) | |
229 | vap->va_blocksize = BLKDEV_IOSIZE; | |
230 | else if (vp->v_type == VCHR) | |
231 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 232 | else |
7188ac27 KM |
233 | vap->va_blocksize = ip->i_fs->fs_bsize; |
234 | /* | |
235 | * XXX THIS IS NOT CORRECT!!, but be sure to change vn_stat() | |
236 | * if you change it. | |
237 | */ | |
238 | vap->va_bytes = ip->i_blocks; | |
239 | vap->va_bytes1 = -1; | |
240 | vap->va_type = vp->v_type; | |
241 | return (0); | |
3e78e260 BJ |
242 | } |
243 | ||
244 | /* | |
7188ac27 | 245 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 246 | */ |
7188ac27 KM |
247 | ufs_setattr(vp, vap, cred) |
248 | register struct vnode *vp; | |
249 | register struct vattr *vap; | |
250 | register struct ucred *cred; | |
3e78e260 | 251 | { |
7188ac27 KM |
252 | register struct inode *ip = VTOI(vp); |
253 | int error = 0; | |
b4d1aee9 | 254 | |
7188ac27 KM |
255 | /* |
256 | * Check for unsetable attributes. | |
257 | */ | |
258 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
259 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
260 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
261 | ((int)vap->va_bytes != VNOVAL)) { | |
262 | return (EINVAL); | |
b4d1aee9 | 263 | } |
7188ac27 KM |
264 | /* |
265 | * Go through the fields and update iff not VNOVAL. | |
266 | */ | |
267 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
268 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
269 | return (error); | |
270 | if (vap->va_size != VNOVAL) { | |
271 | if (vp->v_type == VDIR) | |
272 | return (EISDIR); | |
273 | if (error = iaccess(ip, IWRITE, cred)) | |
274 | return (error); | |
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); | |
292 | return (error); | |
528f664c SL |
293 | } |
294 | ||
4f083fd7 SL |
295 | /* |
296 | * Change the mode on a file. | |
297 | * Inode must be locked before calling. | |
298 | */ | |
7188ac27 KM |
299 | chmod1(vp, mode, cred) |
300 | register struct vnode *vp; | |
528f664c | 301 | register int mode; |
7188ac27 | 302 | struct ucred *cred; |
528f664c | 303 | { |
7188ac27 | 304 | register struct inode *ip = VTOI(vp); |
de412887 | 305 | int error; |
197da11b | 306 | |
de412887 KM |
307 | if (cred->cr_uid != ip->i_uid && |
308 | (error = suser(cred, &u.u_acflag))) | |
309 | return (error); | |
3e78e260 | 310 | ip->i_mode &= ~07777; |
7188ac27 KM |
311 | if (cred->cr_uid) { |
312 | if (vp->v_type != VDIR) | |
47af7174 | 313 | mode &= ~ISVTX; |
7188ac27 | 314 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 315 | mode &= ~ISGID; |
f94ceb3b | 316 | } |
7188ac27 | 317 | ip->i_mode |= mode & 07777; |
3e78e260 | 318 | ip->i_flag |= ICHG; |
7188ac27 KM |
319 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
320 | xrele(vp); | |
47af7174 | 321 | return (0); |
5485e062 BJ |
322 | } |
323 | ||
528f664c SL |
324 | /* |
325 | * Perform chown operation on inode ip; | |
326 | * inode must be locked prior to call. | |
327 | */ | |
7188ac27 KM |
328 | chown1(vp, uid, gid, cred) |
329 | register struct vnode *vp; | |
330 | uid_t uid; | |
331 | gid_t gid; | |
332 | struct ucred *cred; | |
528f664c | 333 | { |
7188ac27 | 334 | register struct inode *ip = VTOI(vp); |
528f664c SL |
335 | #ifdef QUOTA |
336 | register long change; | |
bb1b75f4 | 337 | #endif |
7188ac27 | 338 | int error; |
528f664c | 339 | |
7188ac27 | 340 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 341 | uid = ip->i_uid; |
7188ac27 | 342 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 343 | gid = ip->i_gid; |
18b0bce6 KB |
344 | /* |
345 | * If we don't own the file, are trying to change the owner | |
346 | * of the file, or are not a member of the target group, | |
347 | * the caller must be superuser or the call fails. | |
348 | */ | |
7188ac27 KM |
349 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
350 | !groupmember((gid_t)gid, cred)) && | |
351 | (error = suser(cred, &u.u_acflag))) | |
352 | return (error); | |
bb1b75f4 | 353 | #ifdef QUOTA |
3809bf69 | 354 | if (ip->i_uid == uid) /* this just speeds things a little */ |
0a77f278 | 355 | change = 0; |
2e073567 SL |
356 | else |
357 | change = ip->i_blocks; | |
358 | (void) chkdq(ip, -change, 1); | |
359 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 360 | dqrele(ip->i_dquot); |
f94ceb3b | 361 | #endif |
bb1b75f4 SL |
362 | ip->i_uid = uid; |
363 | ip->i_gid = gid; | |
3e78e260 | 364 | ip->i_flag |= ICHG; |
7188ac27 | 365 | if (cred->cr_ruid != 0) |
3e78e260 | 366 | ip->i_mode &= ~(ISUID|ISGID); |
528f664c | 367 | #ifdef QUOTA |
0a77f278 | 368 | ip->i_dquot = inoquota(ip); |
2e073567 | 369 | (void) chkdq(ip, change, 1); |
8011f5df | 370 | (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1); |
2e073567 SL |
371 | return (u.u_error); /* should == 0 ALWAYS !! */ |
372 | #else | |
bb1b75f4 | 373 | return (0); |
2e073567 | 374 | #endif |
d67a03eb BJ |
375 | } |
376 | ||
7188ac27 KM |
377 | /* ARGSUSED */ |
378 | ufs_ioctl(vp, com, data, fflag, cred) | |
379 | struct vnode *vp; | |
380 | int com; | |
381 | caddr_t data; | |
382 | int fflag; | |
383 | struct ucred *cred; | |
bb1b75f4 | 384 | { |
bb1b75f4 | 385 | |
7188ac27 KM |
386 | printf("ufs_ioctl called with type %d\n", vp->v_type); |
387 | return (ENOTTY); | |
388 | } | |
389 | ||
390 | /* ARGSUSED */ | |
391 | ufs_select(vp, which, cred) | |
392 | struct vnode *vp; | |
393 | int which; | |
394 | struct ucred *cred; | |
395 | { | |
396 | ||
397 | printf("ufs_select called with type %d\n", vp->v_type); | |
398 | return (1); /* XXX */ | |
bb1b75f4 | 399 | } |
d67a03eb | 400 | |
4f083fd7 | 401 | /* |
7188ac27 KM |
402 | * Mmap a file |
403 | * | |
404 | * NB Currently unsupported. | |
4f083fd7 | 405 | */ |
7188ac27 KM |
406 | /* ARGSUSED */ |
407 | ufs_mmap(vp, fflags, cred) | |
408 | struct vnode *vp; | |
409 | int fflags; | |
410 | struct ucred *cred; | |
d67a03eb | 411 | { |
d67a03eb | 412 | |
7188ac27 | 413 | return (EINVAL); |
d67a03eb | 414 | } |
64d3a787 | 415 | |
4f083fd7 | 416 | /* |
7188ac27 | 417 | * Synch an open file. |
4f083fd7 | 418 | */ |
7188ac27 KM |
419 | /* ARGSUSED */ |
420 | ufs_fsync(vp, fflags, cred) | |
421 | struct vnode *vp; | |
422 | int fflags; | |
423 | struct ucred *cred; | |
528f664c | 424 | { |
7188ac27 KM |
425 | register struct inode *ip = VTOI(vp); |
426 | int error; | |
427 | ||
428 | ILOCK(ip); | |
429 | if (fflags&FWRITE) | |
430 | ip->i_flag |= ICHG; | |
431 | error = syncip(ip); | |
432 | IUNLOCK(ip); | |
433 | return (error); | |
528f664c SL |
434 | } |
435 | ||
4f083fd7 | 436 | /* |
7188ac27 KM |
437 | * Seek on a file |
438 | * | |
439 | * Nothing to do, so just return. | |
4f083fd7 | 440 | */ |
7188ac27 KM |
441 | /* ARGSUSED */ |
442 | ufs_seek(vp, oldoff, newoff, cred) | |
443 | struct vnode *vp; | |
444 | off_t oldoff, newoff; | |
445 | struct ucred *cred; | |
528f664c | 446 | { |
7188ac27 KM |
447 | |
448 | return (0); | |
449 | } | |
450 | ||
451 | /* | |
452 | * ufs remove | |
453 | * Hard to avoid races here, especially | |
454 | * in unlinking directories. | |
455 | */ | |
456 | ufs_remove(ndp) | |
457 | struct nameidata *ndp; | |
458 | { | |
459 | register struct inode *ip, *dp; | |
460 | int error; | |
461 | ||
462 | ip = VTOI(ndp->ni_vp); | |
463 | dp = VTOI(ndp->ni_dvp); | |
464 | error = dirremove(ndp); | |
465 | if (!error) { | |
466 | ip->i_nlink--; | |
467 | ip->i_flag |= ICHG; | |
528f664c | 468 | } |
7188ac27 KM |
469 | if (dp == ip) |
470 | vrele(ITOV(ip)); | |
471 | else | |
472 | iput(ip); | |
473 | iput(dp); | |
474 | return (error); | |
4f083fd7 SL |
475 | } |
476 | ||
477 | /* | |
7188ac27 | 478 | * link vnode call |
4f083fd7 | 479 | */ |
7188ac27 KM |
480 | ufs_link(vp, ndp) |
481 | register struct vnode *vp; | |
482 | register struct nameidata *ndp; | |
4f083fd7 | 483 | { |
7188ac27 KM |
484 | register struct inode *ip = VTOI(vp); |
485 | int error; | |
4f083fd7 | 486 | |
7188ac27 KM |
487 | if (ndp->ni_dvp != vp) |
488 | ILOCK(ip); | |
489 | if (ip->i_nlink == LINK_MAX - 1) { | |
490 | error = EMLINK; | |
491 | goto out; | |
492 | } | |
493 | ip->i_nlink++; | |
494 | ip->i_flag |= ICHG; | |
495 | error = iupdat(ip, &time, &time, 1); | |
496 | if (!error) | |
497 | error = direnter(ip, ndp); | |
498 | out: | |
499 | if (ndp->ni_dvp != vp) | |
500 | IUNLOCK(ip); | |
501 | if (error) { | |
502 | ip->i_nlink--; | |
82252d2b | 503 | ip->i_flag |= ICHG; |
7188ac27 KM |
504 | } |
505 | return (error); | |
528f664c SL |
506 | } |
507 | ||
4f083fd7 SL |
508 | /* |
509 | * Rename system call. | |
510 | * rename("foo", "bar"); | |
511 | * is essentially | |
512 | * unlink("bar"); | |
513 | * link("foo", "bar"); | |
514 | * unlink("foo"); | |
515 | * but ``atomically''. Can't do full commit without saving state in the | |
516 | * inode on disk which isn't feasible at this time. Best we can do is | |
517 | * always guarantee the target exists. | |
518 | * | |
519 | * Basic algorithm is: | |
520 | * | |
521 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 522 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
523 | * from underneath us while we work (it may be truncated by |
524 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
525 | * 2) Link source to destination. If destination already exists, |
526 | * delete it first. | |
68f21562 KM |
527 | * 3) Unlink source reference to inode if still around. If a |
528 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
529 | * is different from the source, patch the ".." entry in the |
530 | * directory. | |
4f083fd7 | 531 | */ |
7188ac27 KM |
532 | ufs_rename(fndp, tndp) |
533 | register struct nameidata *fndp, *tndp; | |
528f664c | 534 | { |
4f083fd7 | 535 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
536 | struct dirtemplate dirbuf; |
537 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 538 | int error = 0; |
4f083fd7 | 539 | |
7188ac27 KM |
540 | dp = VTOI(fndp->ni_dvp); |
541 | ip = VTOI(fndp->ni_vp); | |
542 | ILOCK(ip); | |
4f083fd7 | 543 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 544 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 545 | |
4f083fd7 | 546 | /* |
046f18d1 | 547 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 548 | */ |
7188ac27 KM |
549 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
550 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
551 | IUNLOCK(ip); | |
552 | ufs_abortop(fndp); | |
553 | ufs_abortop(tndp); | |
554 | return (EINVAL); | |
4f083fd7 | 555 | } |
68f21562 | 556 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
557 | oldparent = dp->i_number; |
558 | doingdirectory++; | |
559 | } | |
7188ac27 | 560 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
561 | |
562 | /* | |
563 | * 1) Bump link count while we're moving stuff | |
564 | * around. If we crash somewhere before | |
565 | * completing our work, the link count | |
566 | * may be wrong, but correctable. | |
567 | */ | |
568 | ip->i_nlink++; | |
569 | ip->i_flag |= ICHG; | |
7188ac27 | 570 | error = iupdat(ip, &time, &time, 1); |
a388503d | 571 | IUNLOCK(ip); |
4f083fd7 SL |
572 | |
573 | /* | |
574 | * When the target exists, both the directory | |
7188ac27 | 575 | * and target vnodes are returned locked. |
4f083fd7 | 576 | */ |
7188ac27 KM |
577 | dp = VTOI(tndp->ni_dvp); |
578 | xp = NULL; | |
579 | if (tndp->ni_vp) | |
580 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
581 | /* |
582 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
583 | * parent) then the source directory must not be in the |
584 | * directory heirarchy above the target, as this would | |
585 | * orphan everything below the source directory. Also | |
586 | * the user must have write permission in the source so | |
587 | * as to be able to change "..". We must repeat the call | |
588 | * to namei, as the parent directory is unlocked by the | |
589 | * call to checkpath(). | |
046f18d1 | 590 | */ |
68f21562 KM |
591 | if (oldparent != dp->i_number) |
592 | newparent = dp->i_number; | |
593 | if (doingdirectory && newparent) { | |
7188ac27 | 594 | if (error = iaccess(ip, IWRITE, tndp->ni_cred)) |
81552f0f | 595 | goto bad; |
7188ac27 | 596 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 597 | do { |
7188ac27 | 598 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 599 | if (xp != NULL) |
7188ac27 KM |
600 | vput(ITOV(xp)); |
601 | if (error = checkpath(ip, dp, tndp->ni_cred)) | |
81552f0f | 602 | goto out; |
7188ac27 | 603 | if (error = namei(tndp)) |
81552f0f | 604 | goto out; |
7188ac27 KM |
605 | xp = NULL; |
606 | if (tndp->ni_vp) | |
607 | xp = VTOI(tndp->ni_vp); | |
608 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 609 | } |
4f083fd7 SL |
610 | /* |
611 | * 2) If target doesn't exist, link the target | |
612 | * to the source and unlink the source. | |
613 | * Otherwise, rewrite the target directory | |
614 | * entry to reference the source inode and | |
615 | * expunge the original entry's existence. | |
616 | */ | |
4f083fd7 | 617 | if (xp == NULL) { |
7188ac27 KM |
618 | if (dp->i_dev != ip->i_dev) |
619 | panic("rename: EXDEV"); | |
4f083fd7 | 620 | /* |
68f21562 KM |
621 | * Account for ".." in new directory. |
622 | * When source and destination have the same | |
623 | * parent we don't fool with the link count. | |
4f083fd7 | 624 | */ |
68f21562 | 625 | if (doingdirectory && newparent) { |
4f083fd7 SL |
626 | dp->i_nlink++; |
627 | dp->i_flag |= ICHG; | |
7188ac27 | 628 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 629 | } |
7188ac27 | 630 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
631 | goto out; |
632 | } else { | |
7188ac27 KM |
633 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
634 | panic("rename: EXDEV"); | |
e69c3c9c SL |
635 | /* |
636 | * Short circuit rename(foo, foo). | |
637 | */ | |
638 | if (xp->i_number == ip->i_number) | |
7188ac27 | 639 | panic("rename: same file"); |
80cee150 JB |
640 | /* |
641 | * If the parent directory is "sticky", then the user must | |
642 | * own the parent directory, or the destination of the rename, | |
643 | * otherwise the destination may not be changed (except by | |
644 | * root). This implements append-only directories. | |
645 | */ | |
7188ac27 KM |
646 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
647 | tndp->ni_cred->cr_uid != dp->i_uid && | |
648 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
649 | error = EPERM; |
650 | goto bad; | |
651 | } | |
4f083fd7 | 652 | /* |
a5390dce SL |
653 | * Target must be empty if a directory |
654 | * and have no links to it. | |
4f083fd7 SL |
655 | * Also, insure source and target are |
656 | * compatible (both directories, or both | |
657 | * not directories). | |
658 | */ | |
659 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
660 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
661 | xp->i_nlink > 2) { | |
a5390dce | 662 | error = ENOTEMPTY; |
4f083fd7 SL |
663 | goto bad; |
664 | } | |
665 | if (!doingdirectory) { | |
a5390dce | 666 | error = ENOTDIR; |
4f083fd7 SL |
667 | goto bad; |
668 | } | |
7188ac27 | 669 | cache_purge(ITOV(dp)); |
4f083fd7 | 670 | } else if (doingdirectory) { |
a5390dce | 671 | error = EISDIR; |
4f083fd7 SL |
672 | goto bad; |
673 | } | |
7188ac27 KM |
674 | if (error = dirrewrite(dp, ip, tndp)) |
675 | goto bad; | |
676 | vput(ITOV(dp)); | |
4f083fd7 | 677 | /* |
a5390dce SL |
678 | * Adjust the link count of the target to |
679 | * reflect the dirrewrite above. If this is | |
680 | * a directory it is empty and there are | |
681 | * no links to it, so we can squash the inode and | |
682 | * any space associated with it. We disallowed | |
683 | * renaming over top of a directory with links to | |
68f21562 KM |
684 | * it above, as the remaining link would point to |
685 | * a directory without "." or ".." entries. | |
4f083fd7 | 686 | */ |
a5390dce | 687 | xp->i_nlink--; |
4f083fd7 | 688 | if (doingdirectory) { |
a5390dce SL |
689 | if (--xp->i_nlink != 0) |
690 | panic("rename: linked directory"); | |
7188ac27 | 691 | error = itrunc(xp, (u_long)0); |
a5390dce | 692 | } |
4f083fd7 | 693 | xp->i_flag |= ICHG; |
7188ac27 | 694 | vput(ITOV(xp)); |
31db12cb | 695 | xp = NULL; |
4f083fd7 SL |
696 | } |
697 | ||
698 | /* | |
699 | * 3) Unlink the source. | |
700 | */ | |
7188ac27 KM |
701 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
702 | (void)namei(fndp); | |
703 | if (fndp->ni_vp != NULL) { | |
704 | xp = VTOI(fndp->ni_vp); | |
705 | dp = VTOI(fndp->ni_dvp); | |
706 | } else { | |
707 | xp = NULL; | |
4f1a9037 | 708 | dp = NULL; |
7188ac27 | 709 | } |
4f083fd7 | 710 | /* |
7188ac27 | 711 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
712 | * changed while the new name has been entered. If the source is |
713 | * a file then the entry may have been unlinked or renamed. In | |
714 | * either case there is no further work to be done. If the source | |
715 | * is a directory then it cannot have been rmdir'ed; its link | |
716 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 717 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 718 | * rename. |
4f083fd7 | 719 | */ |
4f1a9037 | 720 | if (xp != ip) { |
68f21562 | 721 | if (doingdirectory) |
4f1a9037 | 722 | panic("rename: lost dir entry"); |
68f21562 | 723 | } else { |
4f083fd7 | 724 | /* |
68f21562 KM |
725 | * If the source is a directory with a |
726 | * new parent, the link count of the old | |
727 | * parent directory must be decremented | |
728 | * and ".." set to point to the new parent. | |
4f083fd7 | 729 | */ |
68f21562 | 730 | if (doingdirectory && newparent) { |
4f083fd7 SL |
731 | dp->i_nlink--; |
732 | dp->i_flag |= ICHG; | |
68f21562 | 733 | error = rdwri(UIO_READ, xp, (caddr_t)&dirbuf, |
7188ac27 | 734 | sizeof (struct dirtemplate), (off_t)0, |
93e273b9 | 735 | UIO_SYSSPACE, tndp->ni_cred, (int *)0); |
68f21562 KM |
736 | if (error == 0) { |
737 | if (dirbuf.dotdot_namlen != 2 || | |
738 | dirbuf.dotdot_name[0] != '.' || | |
739 | dirbuf.dotdot_name[1] != '.') { | |
740 | printf("rename: mangled dir\n"); | |
741 | } else { | |
742 | dirbuf.dotdot_ino = newparent; | |
743 | (void) rdwri(UIO_WRITE, xp, | |
744 | (caddr_t)&dirbuf, | |
745 | sizeof (struct dirtemplate), | |
93e273b9 | 746 | (off_t)0, UIO_SYSSPACE, |
7188ac27 KM |
747 | tndp->ni_cred, (int *)0); |
748 | cache_purge(ITOV(dp)); | |
68f21562 KM |
749 | } |
750 | } | |
4f083fd7 | 751 | } |
7188ac27 KM |
752 | error = dirremove(fndp); |
753 | if (!error) { | |
68f21562 KM |
754 | xp->i_nlink--; |
755 | xp->i_flag |= ICHG; | |
4f083fd7 | 756 | } |
68f21562 | 757 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 758 | } |
4f083fd7 | 759 | if (dp) |
7188ac27 | 760 | vput(ITOV(dp)); |
68f21562 | 761 | if (xp) |
7188ac27 KM |
762 | vput(ITOV(xp)); |
763 | vrele(ITOV(ip)); | |
764 | return (error); | |
a5390dce | 765 | |
4f083fd7 | 766 | bad: |
4f083fd7 | 767 | if (xp) |
7188ac27 KM |
768 | vput(ITOV(xp)); |
769 | vput(ITOV(dp)); | |
4f083fd7 SL |
770 | out: |
771 | ip->i_nlink--; | |
772 | ip->i_flag |= ICHG; | |
7188ac27 KM |
773 | vrele(ITOV(ip)); |
774 | return (error); | |
64d3a787 | 775 | } |
88a7a62a SL |
776 | |
777 | /* | |
778 | * A virgin directory (no blushing please). | |
779 | */ | |
780 | struct dirtemplate mastertemplate = { | |
781 | 0, 12, 1, ".", | |
782 | 0, DIRBLKSIZ - 12, 2, ".." | |
783 | }; | |
784 | ||
785 | /* | |
786 | * Mkdir system call | |
787 | */ | |
7188ac27 KM |
788 | ufs_mkdir(ndp, vap) |
789 | struct nameidata *ndp; | |
790 | struct vattr *vap; | |
88a7a62a | 791 | { |
88a7a62a | 792 | register struct inode *ip, *dp; |
7188ac27 KM |
793 | struct inode *tip; |
794 | struct vnode *dvp; | |
88a7a62a | 795 | struct dirtemplate dirtemplate; |
7188ac27 KM |
796 | int error; |
797 | int dmode; | |
798 | ||
799 | dvp = ndp->ni_dvp; | |
800 | dp = VTOI(dvp); | |
801 | dmode = vap->va_mode&0777; | |
802 | dmode |= IFDIR; | |
88a7a62a SL |
803 | /* |
804 | * Must simulate part of maknode here | |
805 | * in order to acquire the inode, but | |
806 | * not have it entered in the parent | |
807 | * directory. The entry is made later | |
808 | * after writing "." and ".." entries out. | |
809 | */ | |
7188ac27 KM |
810 | error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip); |
811 | if (error) { | |
88a7a62a | 812 | iput(dp); |
7188ac27 | 813 | return (error); |
88a7a62a | 814 | } |
7188ac27 | 815 | ip = tip; |
88a7a62a SL |
816 | #ifdef QUOTA |
817 | if (ip->i_dquot != NODQUOT) | |
818 | panic("mkdir: dquot"); | |
819 | #endif | |
820 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
821 | ip->i_mode = dmode; |
822 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 823 | ip->i_nlink = 2; |
7188ac27 | 824 | ip->i_uid = ndp->ni_cred->cr_uid; |
88a7a62a SL |
825 | ip->i_gid = dp->i_gid; |
826 | #ifdef QUOTA | |
827 | ip->i_dquot = inoquota(ip); | |
828 | #endif | |
7188ac27 | 829 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
830 | |
831 | /* | |
832 | * Bump link count in parent directory | |
833 | * to reflect work done below. Should | |
834 | * be done before reference is created | |
835 | * so reparation is possible if we crash. | |
836 | */ | |
837 | dp->i_nlink++; | |
838 | dp->i_flag |= ICHG; | |
7188ac27 | 839 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
840 | |
841 | /* | |
842 | * Initialize directory with "." | |
843 | * and ".." from static template. | |
844 | */ | |
845 | dirtemplate = mastertemplate; | |
846 | dirtemplate.dot_ino = ip->i_number; | |
847 | dirtemplate.dotdot_ino = dp->i_number; | |
7188ac27 KM |
848 | error = rdwri(UIO_WRITE, ip, (caddr_t)&dirtemplate, |
849 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, | |
850 | ndp->ni_cred, (int *)0); | |
851 | if (error) { | |
88a7a62a SL |
852 | dp->i_nlink--; |
853 | dp->i_flag |= ICHG; | |
854 | goto bad; | |
855 | } | |
7188ac27 KM |
856 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
857 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
858 | else |
859 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
860 | /* |
861 | * Directory all set up, now | |
862 | * install the entry for it in | |
863 | * the parent directory. | |
864 | */ | |
7188ac27 | 865 | error = direnter(ip, ndp); |
88a7a62a | 866 | dp = NULL; |
7188ac27 | 867 | if (error) { |
715baff1 | 868 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
869 | error = namei(ndp); |
870 | if (!error) { | |
871 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
872 | dp->i_nlink--; |
873 | dp->i_flag |= ICHG; | |
874 | } | |
875 | } | |
876 | bad: | |
877 | /* | |
878 | * No need to do an explicit itrunc here, | |
7188ac27 | 879 | * vrele will do this for us because we set |
88a7a62a SL |
880 | * the link count to 0. |
881 | */ | |
7188ac27 | 882 | if (error) { |
88a7a62a SL |
883 | ip->i_nlink = 0; |
884 | ip->i_flag |= ICHG; | |
885 | } | |
7188ac27 | 886 | iput(ip); |
88a7a62a SL |
887 | if (dp) |
888 | iput(dp); | |
7188ac27 | 889 | return (error); |
88a7a62a SL |
890 | } |
891 | ||
892 | /* | |
893 | * Rmdir system call. | |
894 | */ | |
7188ac27 KM |
895 | ufs_rmdir(ndp) |
896 | register struct nameidata *ndp; | |
88a7a62a | 897 | { |
88a7a62a | 898 | register struct inode *ip, *dp; |
7188ac27 KM |
899 | int error = 0; |
900 | ||
901 | ip = VTOI(ndp->ni_vp); | |
902 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
903 | /* |
904 | * No rmdir "." please. | |
905 | */ | |
906 | if (dp == ip) { | |
7188ac27 | 907 | vrele(ITOV(dp)); |
88a7a62a | 908 | iput(ip); |
7188ac27 | 909 | return (EINVAL); |
88a7a62a SL |
910 | } |
911 | /* | |
912 | * Verify the directory is empty (and valid). | |
913 | * (Rmdir ".." won't be valid since | |
914 | * ".." will contain a reference to | |
915 | * the current directory and thus be | |
916 | * non-empty.) | |
917 | */ | |
7188ac27 KM |
918 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
919 | error = ENOTEMPTY; | |
88a7a62a SL |
920 | goto out; |
921 | } | |
922 | /* | |
923 | * Delete reference to directory before purging | |
924 | * inode. If we crash in between, the directory | |
925 | * will be reattached to lost+found, | |
926 | */ | |
7188ac27 | 927 | if (error = dirremove(ndp)) |
88a7a62a SL |
928 | goto out; |
929 | dp->i_nlink--; | |
930 | dp->i_flag |= ICHG; | |
7188ac27 | 931 | cache_purge(ITOV(dp)); |
88a7a62a | 932 | iput(dp); |
7188ac27 | 933 | ndp->ni_dvp = NULL; |
88a7a62a SL |
934 | /* |
935 | * Truncate inode. The only stuff left | |
936 | * in the directory is "." and "..". The | |
937 | * "." reference is inconsequential since | |
938 | * we're quashing it. The ".." reference | |
939 | * has already been adjusted above. We've | |
940 | * removed the "." reference and the reference | |
941 | * in the parent directory, but there may be | |
942 | * other hard links so decrement by 2 and | |
943 | * worry about them later. | |
944 | */ | |
945 | ip->i_nlink -= 2; | |
7188ac27 KM |
946 | error = itrunc(ip, (u_long)0); |
947 | cache_purge(ITOV(ip)); | |
88a7a62a | 948 | out: |
7188ac27 | 949 | if (ndp->ni_dvp) |
88a7a62a SL |
950 | iput(dp); |
951 | iput(ip); | |
7188ac27 | 952 | return (error); |
88a7a62a SL |
953 | } |
954 | ||
7188ac27 KM |
955 | /* |
956 | * symlink -- make a symbolic link | |
957 | */ | |
958 | ufs_symlink(ndp, vap, target) | |
959 | struct nameidata *ndp; | |
960 | struct vattr *vap; | |
961 | char *target; | |
962 | { | |
963 | struct inode *ip; | |
964 | int error; | |
965 | ||
966 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
967 | if (error) | |
968 | return (error); | |
969 | error = rdwri(UIO_WRITE, ip, target, strlen(target), (off_t)0, | |
970 | UIO_SYSSPACE, ndp->ni_cred, (int *)0); | |
971 | iput(ip); | |
972 | return (error); | |
973 | } | |
974 | ||
975 | /* | |
976 | * Vnode op for read and write | |
977 | */ | |
978 | ufs_readdir(vp, uio, offp, cred) | |
979 | struct vnode *vp; | |
980 | register struct uio *uio; | |
981 | off_t *offp; | |
982 | struct ucred *cred; | |
88a7a62a | 983 | { |
7188ac27 KM |
984 | register struct inode *ip = VTOI(vp); |
985 | int count, error; | |
88a7a62a | 986 | |
7188ac27 KM |
987 | ILOCK(ip); |
988 | uio->uio_offset = *offp; | |
989 | count = uio->uio_resid; | |
990 | count &= ~(DIRBLKSIZ - 1); | |
991 | if (vp->v_type != VDIR || uio->uio_iovcnt != 1 || | |
992 | (count < DIRBLKSIZ) || (uio->uio_offset & (DIRBLKSIZ -1))) { | |
993 | IUNLOCK(ip); | |
994 | return (EINVAL); | |
995 | } | |
996 | uio->uio_resid = count; | |
997 | uio->uio_iov->iov_len = count; | |
998 | error = readip(ip, uio, cred); | |
999 | *offp += count - uio->uio_resid; | |
1000 | IUNLOCK(ip); | |
1001 | return (error); | |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * Return target name of a symbolic link | |
1006 | */ | |
1007 | ufs_readlink(vp, uiop, cred) | |
1008 | struct vnode *vp; | |
1009 | struct uio *uiop; | |
1010 | struct ucred *cred; | |
1011 | { | |
1012 | ||
1013 | return (readip(VTOI(vp), uiop, cred)); | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1018 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1019 | */ | |
1020 | ufs_abortop(ndp) | |
1021 | register struct nameidata *ndp; | |
1022 | { | |
1023 | register struct inode *ip; | |
1024 | ||
1025 | if (ndp->ni_vp) { | |
1026 | ip = VTOI(ndp->ni_vp); | |
1027 | if (ip->i_flag & ILOCKED) | |
1028 | IUNLOCK(ip); | |
1029 | vrele(ndp->ni_vp); | |
8462a185 | 1030 | } |
7188ac27 KM |
1031 | if (ndp->ni_dvp) { |
1032 | ip = VTOI(ndp->ni_dvp); | |
1033 | if (ip->i_flag & ILOCKED) | |
1034 | IUNLOCK(ip); | |
1035 | vrele(ndp->ni_dvp); | |
88a7a62a | 1036 | } |
7188ac27 KM |
1037 | return; |
1038 | } | |
1039 | ||
1040 | ufs_lock(vp) | |
1041 | struct vnode *vp; | |
1042 | { | |
1043 | register struct inode *ip = VTOI(vp); | |
1044 | ||
1045 | ILOCK(ip); | |
1046 | return (0); | |
1047 | } | |
1048 | ||
1049 | ufs_unlock(vp) | |
1050 | struct vnode *vp; | |
1051 | { | |
1052 | register struct inode *ip = VTOI(vp); | |
1053 | ||
1054 | if (!(ip->i_flag & ILOCKED)) | |
1055 | panic("ufs_unlock NOT LOCKED"); | |
1056 | IUNLOCK(ip); | |
1057 | return (0); | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * Get access to bmap | |
1062 | */ | |
1063 | ufs_bmap(vp, bn, vpp, bnp) | |
1064 | struct vnode *vp; | |
1065 | daddr_t bn; | |
1066 | struct vnode **vpp; | |
1067 | daddr_t *bnp; | |
1068 | { | |
1069 | struct inode *ip = VTOI(vp); | |
1070 | ||
1071 | if (vpp != NULL) | |
1072 | *vpp = ip->i_devvp; | |
1073 | if (bnp == NULL) | |
1074 | return (0); | |
1075 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1076 | } |
1077 | ||
1078 | /* | |
7188ac27 | 1079 | * Just call the device strategy routine |
88a7a62a | 1080 | */ |
7188ac27 KM |
1081 | ufs_strategy(bp) |
1082 | register struct buf *bp; | |
88a7a62a | 1083 | { |
7188ac27 KM |
1084 | (*bdevsw[major(bp->b_dev)].d_strategy)(bp); |
1085 | return (0); | |
1086 | } | |
88a7a62a | 1087 | |
7188ac27 KM |
1088 | /* |
1089 | * Make a new file. | |
1090 | */ | |
1091 | maknode(mode, ndp, ipp) | |
1092 | int mode; | |
1093 | register struct nameidata *ndp; | |
1094 | struct inode **ipp; | |
1095 | { | |
1096 | register struct inode *ip; | |
1097 | struct inode *tip; | |
1098 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1099 | ino_t ipref; | |
1100 | int error; | |
1101 | ||
1102 | *ipp = 0; | |
1103 | if ((mode & IFMT) == IFDIR) | |
1104 | ipref = dirpref(pdir->i_fs); | |
1105 | else | |
1106 | ipref = pdir->i_number; | |
1107 | error = ialloc(pdir, ipref, mode, &tip); | |
1108 | if (error) { | |
1109 | iput(pdir); | |
1110 | return (error); | |
1111 | } | |
1112 | ip = tip; | |
1113 | #ifdef QUOTA | |
1114 | if (ip->i_dquot != NODQUOT) | |
1115 | panic("maknode: dquot"); | |
1116 | #endif | |
1117 | ip->i_flag |= IACC|IUPD|ICHG; | |
1118 | if ((mode & IFMT) == 0) | |
1119 | mode |= IFREG; | |
1120 | ip->i_mode = mode; | |
1121 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1122 | ip->i_nlink = 1; | |
1123 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1124 | ip->i_gid = pdir->i_gid; | |
1125 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1126 | suser(ndp->ni_cred, NULL)) | |
1127 | ip->i_mode &= ~ISGID; | |
1128 | #ifdef QUOTA | |
1129 | ip->i_dquot = inoquota(ip); | |
1130 | #endif | |
1131 | ||
1132 | /* | |
1133 | * Make sure inode goes to disk before directory entry. | |
1134 | */ | |
1135 | if ((error = iupdat(ip, &time, &time, 1)) || | |
1136 | (error = direnter(ip, ndp))) { | |
1137 | /* | |
1138 | * Write error occurred trying to update the inode | |
1139 | * or the directory so must deallocate the inode. | |
1140 | */ | |
1141 | ip->i_nlink = 0; | |
1142 | ip->i_flag |= ICHG; | |
1143 | iput(ip); | |
1144 | return (error); | |
1145 | } | |
1146 | *ipp = ip; | |
1147 | return (0); | |
88a7a62a | 1148 | } |