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 | * | |
fcd4f15a | 17 | * @(#)ufs_vnops.c 7.37 (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 "socket.h" |
29 | #include "socketvar.h" | |
7188ac27 | 30 | #include "conf.h" |
94368568 | 31 | #include "mount.h" |
7188ac27 | 32 | #include "vnode.h" |
0f93ba7b | 33 | #include "specdev.h" |
4b61628b | 34 | #include "../ufs/quota.h" |
7188ac27 KM |
35 | #include "../ufs/inode.h" |
36 | #include "../ufs/fs.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(), | |
e16fa59e | 71 | ufs_strategy(), |
1c3ebc10 KM |
72 | ufs_print(), |
73 | ufs_islocked(); | |
7188ac27 KM |
74 | |
75 | struct vnodeops ufs_vnodeops = { | |
e16fa59e KM |
76 | ufs_lookup, /* lookup */ |
77 | ufs_create, /* create */ | |
78 | ufs_mknod, /* mknod */ | |
79 | ufs_open, /* open */ | |
80 | ufs_close, /* close */ | |
81 | ufs_access, /* access */ | |
82 | ufs_getattr, /* getattr */ | |
83 | ufs_setattr, /* setattr */ | |
84 | ufs_read, /* read */ | |
85 | ufs_write, /* write */ | |
86 | ufs_ioctl, /* ioctl */ | |
87 | ufs_select, /* select */ | |
88 | ufs_mmap, /* mmap */ | |
89 | ufs_fsync, /* fsync */ | |
90 | ufs_seek, /* seek */ | |
91 | ufs_remove, /* remove */ | |
92 | ufs_link, /* link */ | |
93 | ufs_rename, /* rename */ | |
94 | ufs_mkdir, /* mkdir */ | |
95 | ufs_rmdir, /* rmdir */ | |
96 | ufs_symlink, /* symlink */ | |
97 | ufs_readdir, /* readdir */ | |
98 | ufs_readlink, /* readlink */ | |
99 | ufs_abortop, /* abortop */ | |
100 | ufs_inactive, /* inactive */ | |
101 | ufs_reclaim, /* reclaim */ | |
102 | ufs_lock, /* lock */ | |
103 | ufs_unlock, /* unlock */ | |
104 | ufs_bmap, /* bmap */ | |
105 | ufs_strategy, /* strategy */ | |
106 | ufs_print, /* print */ | |
1c3ebc10 | 107 | ufs_islocked, /* islocked */ |
7188ac27 KM |
108 | }; |
109 | ||
f09fe6d3 KM |
110 | int spec_lookup(), |
111 | spec_open(), | |
24a31b70 KM |
112 | ufsspec_read(), |
113 | ufsspec_write(), | |
f09fe6d3 | 114 | spec_strategy(), |
e16fa59e | 115 | spec_bmap(), |
f09fe6d3 KM |
116 | spec_ioctl(), |
117 | spec_select(), | |
24a31b70 | 118 | ufsspec_close(), |
f09fe6d3 KM |
119 | spec_badop(), |
120 | spec_nullop(); | |
121 | ||
122 | struct vnodeops spec_inodeops = { | |
86cdabf6 KM |
123 | spec_lookup, /* lookup */ |
124 | spec_badop, /* create */ | |
125 | spec_badop, /* mknod */ | |
126 | spec_open, /* open */ | |
24a31b70 | 127 | ufsspec_close, /* close */ |
86cdabf6 KM |
128 | ufs_access, /* access */ |
129 | ufs_getattr, /* getattr */ | |
130 | ufs_setattr, /* setattr */ | |
24a31b70 KM |
131 | ufsspec_read, /* read */ |
132 | ufsspec_write, /* write */ | |
86cdabf6 KM |
133 | spec_ioctl, /* ioctl */ |
134 | spec_select, /* select */ | |
135 | spec_badop, /* mmap */ | |
136 | spec_nullop, /* fsync */ | |
137 | spec_badop, /* seek */ | |
138 | spec_badop, /* remove */ | |
139 | spec_badop, /* link */ | |
140 | spec_badop, /* rename */ | |
141 | spec_badop, /* mkdir */ | |
142 | spec_badop, /* rmdir */ | |
143 | spec_badop, /* symlink */ | |
144 | spec_badop, /* readdir */ | |
145 | spec_badop, /* readlink */ | |
146 | spec_badop, /* abortop */ | |
147 | ufs_inactive, /* inactive */ | |
148 | ufs_reclaim, /* reclaim */ | |
149 | ufs_lock, /* lock */ | |
150 | ufs_unlock, /* unlock */ | |
e16fa59e | 151 | spec_bmap, /* bmap */ |
86cdabf6 | 152 | spec_strategy, /* strategy */ |
e16fa59e | 153 | ufs_print, /* print */ |
1c3ebc10 | 154 | ufs_islocked, /* islocked */ |
f09fe6d3 KM |
155 | }; |
156 | ||
d1c43d7f KM |
157 | #ifdef FIFO |
158 | int fifo_lookup(), | |
159 | fifo_open(), | |
160 | ufsfifo_read(), | |
161 | ufsfifo_write(), | |
162 | fifo_bmap(), | |
163 | fifo_ioctl(), | |
164 | fifo_select(), | |
165 | ufsfifo_close(), | |
166 | fifo_print(), | |
167 | fifo_badop(), | |
168 | fifo_nullop(); | |
169 | ||
170 | struct vnodeops fifo_inodeops = { | |
171 | fifo_lookup, /* lookup */ | |
172 | fifo_badop, /* create */ | |
173 | fifo_badop, /* mknod */ | |
174 | fifo_open, /* open */ | |
175 | ufsfifo_close, /* close */ | |
176 | ufs_access, /* access */ | |
177 | ufs_getattr, /* getattr */ | |
178 | ufs_setattr, /* setattr */ | |
179 | ufsfifo_read, /* read */ | |
180 | ufsfifo_write, /* write */ | |
181 | fifo_ioctl, /* ioctl */ | |
182 | fifo_select, /* select */ | |
183 | fifo_badop, /* mmap */ | |
184 | fifo_nullop, /* fsync */ | |
185 | fifo_badop, /* seek */ | |
186 | fifo_badop, /* remove */ | |
187 | fifo_badop, /* link */ | |
188 | fifo_badop, /* rename */ | |
189 | fifo_badop, /* mkdir */ | |
190 | fifo_badop, /* rmdir */ | |
191 | fifo_badop, /* symlink */ | |
192 | fifo_badop, /* readdir */ | |
193 | fifo_badop, /* readlink */ | |
194 | fifo_badop, /* abortop */ | |
195 | ufs_inactive, /* inactive */ | |
196 | ufs_reclaim, /* reclaim */ | |
197 | ufs_lock, /* lock */ | |
198 | ufs_unlock, /* unlock */ | |
199 | fifo_bmap, /* bmap */ | |
200 | fifo_badop, /* strategy */ | |
201 | ufs_print, /* print */ | |
202 | ufs_islocked, /* islocked */ | |
203 | }; | |
204 | #endif /* FIFO */ | |
205 | ||
206 | enum vtype iftovt_tab[16] = { | |
207 | VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON, | |
208 | VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD, | |
7188ac27 | 209 | }; |
d1c43d7f KM |
210 | int vttoif_tab[9] = { |
211 | 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFIFO, IFMT, | |
7188ac27 | 212 | }; |
3e78e260 | 213 | |
4f083fd7 | 214 | /* |
7188ac27 | 215 | * Create a regular file |
4f083fd7 | 216 | */ |
7188ac27 KM |
217 | ufs_create(ndp, vap) |
218 | struct nameidata *ndp; | |
219 | struct vattr *vap; | |
3e78e260 | 220 | { |
7188ac27 KM |
221 | struct inode *ip; |
222 | int error; | |
3e78e260 | 223 | |
7188ac27 KM |
224 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
225 | return (error); | |
226 | ndp->ni_vp = ITOV(ip); | |
227 | return (0); | |
3e78e260 BJ |
228 | } |
229 | ||
4f083fd7 | 230 | /* |
7188ac27 | 231 | * Mknod vnode call |
4f083fd7 | 232 | */ |
7188ac27 KM |
233 | /* ARGSUSED */ |
234 | ufs_mknod(ndp, vap, cred) | |
235 | struct nameidata *ndp; | |
236 | struct ucred *cred; | |
237 | struct vattr *vap; | |
3e78e260 | 238 | { |
f09fe6d3 | 239 | register struct vnode *vp; |
7188ac27 KM |
240 | struct inode *ip; |
241 | int error; | |
3e78e260 | 242 | |
7188ac27 KM |
243 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
244 | return (error); | |
d1c43d7f KM |
245 | ip->i_flag |= IACC|IUPD|ICHG; |
246 | if (vap->va_rdev != VNOVAL) { | |
7188ac27 KM |
247 | /* |
248 | * Want to be able to use this to make badblock | |
249 | * inodes, so don't truncate the dev number. | |
250 | */ | |
b373e060 | 251 | ip->i_rdev = vap->va_rdev; |
7188ac27 | 252 | } |
7188ac27 KM |
253 | /* |
254 | * Remove inode so that it will be reloaded by iget and | |
255 | * checked to see if it is an alias of an existing entry | |
256 | * in the inode cache. | |
257 | */ | |
d1c43d7f KM |
258 | vp = ITOV(ip); |
259 | vput(vp); | |
f09fe6d3 KM |
260 | vp->v_type = VNON; |
261 | vgone(vp); | |
7188ac27 | 262 | return (0); |
3e78e260 BJ |
263 | } |
264 | ||
265 | /* | |
7188ac27 KM |
266 | * Open called. |
267 | * | |
268 | * Nothing to do. | |
3e78e260 | 269 | */ |
7188ac27 KM |
270 | /* ARGSUSED */ |
271 | ufs_open(vp, mode, cred) | |
272 | struct vnode *vp; | |
273 | int mode; | |
274 | struct ucred *cred; | |
3e78e260 | 275 | { |
3e78e260 | 276 | |
7188ac27 | 277 | return (0); |
3e78e260 BJ |
278 | } |
279 | ||
280 | /* | |
7188ac27 KM |
281 | * Close called |
282 | * | |
283 | * Update the times on the inode. | |
3e78e260 | 284 | */ |
7188ac27 KM |
285 | /* ARGSUSED */ |
286 | ufs_close(vp, fflag, cred) | |
287 | struct vnode *vp; | |
288 | int fflag; | |
289 | struct ucred *cred; | |
3e78e260 | 290 | { |
7188ac27 | 291 | register struct inode *ip = VTOI(vp); |
3e78e260 | 292 | |
de67eefc | 293 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
7188ac27 KM |
294 | ITIMES(ip, &time, &time); |
295 | return (0); | |
3e78e260 BJ |
296 | } |
297 | ||
4b61628b KM |
298 | /* |
299 | * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. | |
300 | * The mode is shifted to select the owner/group/other fields. The | |
301 | * super user is granted all permissions. | |
302 | */ | |
7188ac27 KM |
303 | ufs_access(vp, mode, cred) |
304 | struct vnode *vp; | |
4b61628b | 305 | register int mode; |
7188ac27 | 306 | struct ucred *cred; |
3e78e260 | 307 | { |
4b61628b KM |
308 | register struct inode *ip = VTOI(vp); |
309 | register gid_t *gp; | |
310 | int i, error; | |
3e78e260 | 311 | |
4b61628b KM |
312 | #ifdef DIAGNOSTIC |
313 | if (!VOP_ISLOCKED(vp)) { | |
314 | vprint("ufs_access: not locked", vp); | |
315 | panic("ufs_access: not locked"); | |
316 | } | |
317 | #endif | |
318 | #ifdef QUOTA | |
319 | if (mode & VWRITE) { | |
320 | switch (vp->v_type) { | |
321 | case VREG: case VDIR: case VLNK: | |
322 | if (error = getinoquota(ip)) | |
323 | return (error); | |
324 | } | |
325 | } | |
326 | #endif /* QUOTA */ | |
327 | /* | |
328 | * If you're the super-user, you always get access. | |
329 | */ | |
330 | if (cred->cr_uid == 0) | |
331 | return (0); | |
332 | /* | |
333 | * Access check is based on only one of owner, group, public. | |
334 | * If not owner, then check group. If not a member of the | |
335 | * group, then check public access. | |
336 | */ | |
337 | if (cred->cr_uid != ip->i_uid) { | |
338 | mode >>= 3; | |
339 | gp = cred->cr_groups; | |
340 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
341 | if (ip->i_gid == *gp) | |
342 | goto found; | |
343 | mode >>= 3; | |
344 | found: | |
345 | ; | |
346 | } | |
347 | if ((ip->i_mode & mode) != 0) | |
348 | return (0); | |
349 | return (EACCES); | |
3e78e260 BJ |
350 | } |
351 | ||
7188ac27 KM |
352 | /* ARGSUSED */ |
353 | ufs_getattr(vp, vap, cred) | |
354 | struct vnode *vp; | |
355 | register struct vattr *vap; | |
356 | struct ucred *cred; | |
3e78e260 | 357 | { |
7188ac27 | 358 | register struct inode *ip = VTOI(vp); |
3e78e260 | 359 | |
7188ac27 | 360 | ITIMES(ip, &time, &time); |
3e78e260 | 361 | /* |
7188ac27 | 362 | * Copy from inode table |
3e78e260 | 363 | */ |
7188ac27 KM |
364 | vap->va_fsid = ip->i_dev; |
365 | vap->va_fileid = ip->i_number; | |
366 | vap->va_mode = ip->i_mode & ~IFMT; | |
367 | vap->va_nlink = ip->i_nlink; | |
368 | vap->va_uid = ip->i_uid; | |
369 | vap->va_gid = ip->i_gid; | |
370 | vap->va_rdev = (dev_t)ip->i_rdev; | |
4b61628b KM |
371 | #ifdef tahoe |
372 | vap->va_size = ip->i_size; | |
373 | vap->va_size_rsv = 0; | |
374 | #else | |
8fae943a | 375 | vap->va_qsize = ip->i_din.di_qsize; |
4b61628b | 376 | #endif |
7188ac27 | 377 | vap->va_atime.tv_sec = ip->i_atime; |
6ef53d70 | 378 | vap->va_atime.tv_usec = 0; |
7188ac27 | 379 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 380 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 381 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 382 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
383 | vap->va_flags = ip->i_flags; |
384 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
385 | /* this doesn't belong here */ |
386 | if (vp->v_type == VBLK) | |
387 | vap->va_blocksize = BLKDEV_IOSIZE; | |
388 | else if (vp->v_type == VCHR) | |
389 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 390 | else |
7188ac27 | 391 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 392 | vap->va_bytes = dbtob(ip->i_blocks); |
8fae943a | 393 | vap->va_bytes_rsv = 0; |
7188ac27 KM |
394 | vap->va_type = vp->v_type; |
395 | return (0); | |
3e78e260 BJ |
396 | } |
397 | ||
398 | /* | |
7188ac27 | 399 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 400 | */ |
7188ac27 KM |
401 | ufs_setattr(vp, vap, cred) |
402 | register struct vnode *vp; | |
403 | register struct vattr *vap; | |
404 | register struct ucred *cred; | |
3e78e260 | 405 | { |
7188ac27 KM |
406 | register struct inode *ip = VTOI(vp); |
407 | int error = 0; | |
b4d1aee9 | 408 | |
7188ac27 KM |
409 | /* |
410 | * Check for unsetable attributes. | |
411 | */ | |
412 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
413 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
414 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 415 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 416 | return (EINVAL); |
b4d1aee9 | 417 | } |
7188ac27 KM |
418 | /* |
419 | * Go through the fields and update iff not VNOVAL. | |
420 | */ | |
421 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
422 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
423 | return (error); | |
424 | if (vap->va_size != VNOVAL) { | |
425 | if (vp->v_type == VDIR) | |
426 | return (EISDIR); | |
e16fa59e | 427 | if (error = itrunc(ip, vap->va_size, 0)) /* XXX IO_SYNC? */ |
7188ac27 | 428 | return (error); |
3e78e260 | 429 | } |
7188ac27 | 430 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
431 | if (cred->cr_uid != ip->i_uid && |
432 | (error = suser(cred, &u.u_acflag))) | |
433 | return (error); | |
7188ac27 KM |
434 | if (vap->va_atime.tv_sec != VNOVAL) |
435 | ip->i_flag |= IACC; | |
436 | if (vap->va_mtime.tv_sec != VNOVAL) | |
437 | ip->i_flag |= IUPD; | |
438 | ip->i_flag |= ICHG; | |
439 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
440 | return (error); | |
5485e062 | 441 | } |
7188ac27 KM |
442 | if (vap->va_mode != (u_short)VNOVAL) |
443 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
444 | if (vap->va_flags != VNOVAL) { |
445 | if (cred->cr_uid != ip->i_uid && | |
446 | (error = suser(cred, &u.u_acflag))) | |
447 | return (error); | |
448 | if (cred->cr_uid == 0) { | |
449 | ip->i_flags = vap->va_flags; | |
450 | } else { | |
451 | ip->i_flags &= 0xffff0000; | |
452 | ip->i_flags |= (vap->va_flags & 0xffff); | |
453 | } | |
454 | ip->i_flag |= ICHG; | |
455 | } | |
7188ac27 | 456 | return (error); |
528f664c SL |
457 | } |
458 | ||
4f083fd7 SL |
459 | /* |
460 | * Change the mode on a file. | |
461 | * Inode must be locked before calling. | |
462 | */ | |
7188ac27 KM |
463 | chmod1(vp, mode, cred) |
464 | register struct vnode *vp; | |
528f664c | 465 | register int mode; |
7188ac27 | 466 | struct ucred *cred; |
528f664c | 467 | { |
7188ac27 | 468 | register struct inode *ip = VTOI(vp); |
de412887 | 469 | int error; |
197da11b | 470 | |
de412887 KM |
471 | if (cred->cr_uid != ip->i_uid && |
472 | (error = suser(cred, &u.u_acflag))) | |
473 | return (error); | |
3e78e260 | 474 | ip->i_mode &= ~07777; |
7188ac27 KM |
475 | if (cred->cr_uid) { |
476 | if (vp->v_type != VDIR) | |
47af7174 | 477 | mode &= ~ISVTX; |
7188ac27 | 478 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 479 | mode &= ~ISGID; |
f94ceb3b | 480 | } |
7188ac27 | 481 | ip->i_mode |= mode & 07777; |
3e78e260 | 482 | ip->i_flag |= ICHG; |
7188ac27 KM |
483 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
484 | xrele(vp); | |
47af7174 | 485 | return (0); |
5485e062 BJ |
486 | } |
487 | ||
528f664c SL |
488 | /* |
489 | * Perform chown operation on inode ip; | |
490 | * inode must be locked prior to call. | |
491 | */ | |
7188ac27 KM |
492 | chown1(vp, uid, gid, cred) |
493 | register struct vnode *vp; | |
494 | uid_t uid; | |
495 | gid_t gid; | |
496 | struct ucred *cred; | |
528f664c | 497 | { |
7188ac27 | 498 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
499 | uid_t ouid; |
500 | gid_t ogid; | |
501 | int error = 0; | |
528f664c | 502 | #ifdef QUOTA |
4b61628b KM |
503 | register int i; |
504 | long change; | |
bb1b75f4 | 505 | #endif |
528f664c | 506 | |
7188ac27 | 507 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 508 | uid = ip->i_uid; |
7188ac27 | 509 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 510 | gid = ip->i_gid; |
18b0bce6 KB |
511 | /* |
512 | * If we don't own the file, are trying to change the owner | |
513 | * of the file, or are not a member of the target group, | |
514 | * the caller must be superuser or the call fails. | |
515 | */ | |
7188ac27 KM |
516 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
517 | !groupmember((gid_t)gid, cred)) && | |
518 | (error = suser(cred, &u.u_acflag))) | |
519 | return (error); | |
4b61628b KM |
520 | ouid = ip->i_uid; |
521 | ogid = ip->i_gid; | |
bb1b75f4 | 522 | #ifdef QUOTA |
4b61628b KM |
523 | if (error = getinoquota(ip)) |
524 | return (error); | |
525 | if (ouid == uid) { | |
526 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
527 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
528 | } | |
529 | if (ogid == gid) { | |
530 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
531 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
532 | } | |
533 | change = ip->i_blocks; | |
534 | (void) chkdq(ip, -change, cred, CHOWN); | |
535 | (void) chkiq(ip, -1, cred, CHOWN); | |
536 | for (i = 0; i < MAXQUOTAS; i++) { | |
537 | dqrele(vp, ip->i_dquot[i]); | |
538 | ip->i_dquot[i] = NODQUOT; | |
539 | } | |
f94ceb3b | 540 | #endif |
bb1b75f4 SL |
541 | ip->i_uid = uid; |
542 | ip->i_gid = gid; | |
528f664c | 543 | #ifdef QUOTA |
4b61628b KM |
544 | if ((error = getinoquota(ip)) == 0) { |
545 | if (ouid == uid) { | |
546 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
547 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
548 | } | |
549 | if (ogid == gid) { | |
550 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
551 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
552 | } | |
553 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
554 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
555 | return (0); | |
556 | else | |
557 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
558 | } | |
559 | for (i = 0; i < MAXQUOTAS; i++) { | |
560 | dqrele(vp, ip->i_dquot[i]); | |
561 | ip->i_dquot[i] = NODQUOT; | |
562 | } | |
563 | } | |
564 | ip->i_uid = ouid; | |
565 | ip->i_gid = ogid; | |
566 | if (getinoquota(ip) == 0) { | |
567 | if (ouid == uid) { | |
568 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
569 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
570 | } | |
571 | if (ogid == gid) { | |
572 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
573 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
574 | } | |
575 | (void) chkdq(ip, change, cred, FORCE); | |
576 | (void) chkiq(ip, 1, cred, FORCE); | |
577 | } | |
578 | if (error) | |
579 | return (error); | |
2e073567 | 580 | #endif |
4b61628b KM |
581 | if (ouid != uid || ogid != gid) |
582 | ip->i_flag |= ICHG; | |
583 | if (ouid != uid && cred->cr_uid != 0) | |
584 | ip->i_mode &= ~ISUID; | |
585 | if (ogid != gid && cred->cr_uid != 0) | |
586 | ip->i_mode &= ~ISGID; | |
587 | return (0); | |
d67a03eb BJ |
588 | } |
589 | ||
b373e060 KM |
590 | /* |
591 | * Vnode op for reading. | |
592 | */ | |
593 | /* ARGSUSED */ | |
594 | ufs_read(vp, uio, ioflag, cred) | |
595 | struct vnode *vp; | |
596 | register struct uio *uio; | |
597 | int ioflag; | |
598 | struct ucred *cred; | |
599 | { | |
600 | register struct inode *ip = VTOI(vp); | |
601 | register struct fs *fs; | |
602 | struct buf *bp; | |
603 | daddr_t lbn, bn, rablock; | |
20aa076b | 604 | int size, diff, error = 0; |
b373e060 KM |
605 | long n, on, type; |
606 | ||
607 | if (uio->uio_rw != UIO_READ) | |
608 | panic("ufs_read mode"); | |
609 | type = ip->i_mode & IFMT; | |
610 | if (type != IFDIR && type != IFREG && type != IFLNK) | |
611 | panic("ufs_read type"); | |
612 | if (uio->uio_resid == 0) | |
613 | return (0); | |
614 | if (uio->uio_offset < 0) | |
615 | return (EINVAL); | |
616 | ip->i_flag |= IACC; | |
617 | fs = ip->i_fs; | |
618 | do { | |
619 | lbn = lblkno(fs, uio->uio_offset); | |
620 | on = blkoff(fs, uio->uio_offset); | |
621 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
622 | diff = ip->i_size - uio->uio_offset; | |
623 | if (diff <= 0) | |
624 | return (0); | |
625 | if (diff < n) | |
626 | n = diff; | |
b373e060 | 627 | size = blksize(fs, ip, lbn); |
e16fa59e | 628 | rablock = lbn + 1; |
20aa076b KM |
629 | if (vp->v_lastr + 1 == lbn && |
630 | lblktosize(fs, rablock) < ip->i_size) | |
631 | error = breada(ITOV(ip), lbn, size, rablock, | |
632 | blksize(fs, ip, rablock), NOCRED, &bp); | |
b373e060 | 633 | else |
e16fa59e | 634 | error = bread(ITOV(ip), lbn, size, NOCRED, &bp); |
de67eefc | 635 | vp->v_lastr = lbn; |
b373e060 KM |
636 | n = MIN(n, size - bp->b_resid); |
637 | if (error) { | |
638 | brelse(bp); | |
639 | return (error); | |
640 | } | |
641 | error = uiomove(bp->b_un.b_addr + on, (int)n, uio); | |
642 | if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size) | |
643 | bp->b_flags |= B_AGE; | |
644 | brelse(bp); | |
645 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
646 | return (error); | |
647 | } | |
648 | ||
649 | /* | |
650 | * Vnode op for writing. | |
651 | */ | |
652 | ufs_write(vp, uio, ioflag, cred) | |
653 | register struct vnode *vp; | |
654 | struct uio *uio; | |
655 | int ioflag; | |
656 | struct ucred *cred; | |
657 | { | |
658 | register struct inode *ip = VTOI(vp); | |
659 | register struct fs *fs; | |
660 | struct buf *bp; | |
661 | daddr_t lbn, bn; | |
662 | u_long osize; | |
663 | int i, n, on, flags; | |
664 | int count, size, resid, error = 0; | |
665 | ||
666 | if (uio->uio_rw != UIO_WRITE) | |
667 | panic("ufs_write mode"); | |
668 | switch (vp->v_type) { | |
669 | case VREG: | |
670 | if (ioflag & IO_APPEND) | |
671 | uio->uio_offset = ip->i_size; | |
672 | /* fall through */ | |
673 | case VLNK: | |
674 | break; | |
675 | ||
676 | case VDIR: | |
677 | if ((ioflag & IO_SYNC) == 0) | |
678 | panic("ufs_write nonsync dir write"); | |
679 | break; | |
680 | ||
681 | default: | |
682 | panic("ufs_write type"); | |
683 | } | |
684 | if (uio->uio_offset < 0) | |
685 | return (EINVAL); | |
686 | if (uio->uio_resid == 0) | |
687 | return (0); | |
688 | /* | |
689 | * Maybe this should be above the vnode op call, but so long as | |
690 | * file servers have no limits, i don't think it matters | |
691 | */ | |
692 | if (vp->v_type == VREG && | |
693 | uio->uio_offset + uio->uio_resid > | |
694 | u.u_rlimit[RLIMIT_FSIZE].rlim_cur) { | |
695 | psignal(u.u_procp, SIGXFSZ); | |
696 | return (EFBIG); | |
697 | } | |
698 | resid = uio->uio_resid; | |
699 | osize = ip->i_size; | |
700 | fs = ip->i_fs; | |
e16fa59e KM |
701 | flags = 0; |
702 | if (ioflag & IO_SYNC) | |
703 | flags = B_SYNC; | |
b373e060 KM |
704 | do { |
705 | lbn = lblkno(fs, uio->uio_offset); | |
706 | on = blkoff(fs, uio->uio_offset); | |
707 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
708 | if (n < fs->fs_bsize) | |
e16fa59e | 709 | flags |= B_CLRBUF; |
b373e060 | 710 | else |
e16fa59e KM |
711 | flags &= ~B_CLRBUF; |
712 | if (error = balloc(ip, lbn, (int)(on + n), &bp, flags)) | |
b373e060 | 713 | break; |
e16fa59e | 714 | bn = bp->b_blkno; |
b373e060 KM |
715 | if (uio->uio_offset + n > ip->i_size) |
716 | ip->i_size = uio->uio_offset + n; | |
717 | size = blksize(fs, ip, lbn); | |
718 | count = howmany(size, CLBYTES); | |
719 | for (i = 0; i < count; i++) | |
720 | munhash(ip->i_devvp, bn + i * CLBYTES / DEV_BSIZE); | |
b373e060 | 721 | n = MIN(n, size - bp->b_resid); |
b373e060 KM |
722 | error = uiomove(bp->b_un.b_addr + on, n, uio); |
723 | if (ioflag & IO_SYNC) | |
724 | (void) bwrite(bp); | |
725 | else if (n + on == fs->fs_bsize) { | |
726 | bp->b_flags |= B_AGE; | |
727 | bawrite(bp); | |
728 | } else | |
729 | bdwrite(bp); | |
730 | ip->i_flag |= IUPD|ICHG; | |
731 | if (cred->cr_uid != 0) | |
732 | ip->i_mode &= ~(ISUID|ISGID); | |
733 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
734 | if (error && (ioflag & IO_UNIT)) { | |
e16fa59e | 735 | (void) itrunc(ip, osize, ioflag & IO_SYNC); |
b373e060 KM |
736 | uio->uio_offset -= resid - uio->uio_resid; |
737 | uio->uio_resid = resid; | |
738 | } | |
739 | return (error); | |
740 | } | |
741 | ||
7188ac27 KM |
742 | /* ARGSUSED */ |
743 | ufs_ioctl(vp, com, data, fflag, cred) | |
744 | struct vnode *vp; | |
745 | int com; | |
746 | caddr_t data; | |
747 | int fflag; | |
748 | struct ucred *cred; | |
bb1b75f4 | 749 | { |
bb1b75f4 | 750 | |
7188ac27 KM |
751 | return (ENOTTY); |
752 | } | |
753 | ||
754 | /* ARGSUSED */ | |
d1c43d7f | 755 | ufs_select(vp, which, fflags, cred) |
7188ac27 | 756 | struct vnode *vp; |
d1c43d7f | 757 | int which, fflags; |
7188ac27 KM |
758 | struct ucred *cred; |
759 | { | |
760 | ||
7188ac27 | 761 | return (1); /* XXX */ |
bb1b75f4 | 762 | } |
d67a03eb | 763 | |
4f083fd7 | 764 | /* |
7188ac27 KM |
765 | * Mmap a file |
766 | * | |
767 | * NB Currently unsupported. | |
4f083fd7 | 768 | */ |
7188ac27 KM |
769 | /* ARGSUSED */ |
770 | ufs_mmap(vp, fflags, cred) | |
771 | struct vnode *vp; | |
772 | int fflags; | |
773 | struct ucred *cred; | |
d67a03eb | 774 | { |
d67a03eb | 775 | |
7188ac27 | 776 | return (EINVAL); |
d67a03eb | 777 | } |
64d3a787 | 778 | |
4f083fd7 | 779 | /* |
7188ac27 | 780 | * Synch an open file. |
4f083fd7 | 781 | */ |
7188ac27 | 782 | /* ARGSUSED */ |
86cdabf6 | 783 | ufs_fsync(vp, fflags, cred, waitfor) |
7188ac27 KM |
784 | struct vnode *vp; |
785 | int fflags; | |
786 | struct ucred *cred; | |
86cdabf6 | 787 | int waitfor; |
528f664c | 788 | { |
86cdabf6 | 789 | struct inode *ip = VTOI(vp); |
7188ac27 | 790 | |
7188ac27 KM |
791 | if (fflags&FWRITE) |
792 | ip->i_flag |= ICHG; | |
e16fa59e KM |
793 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); |
794 | return (iupdat(ip, &time, &time, waitfor == MNT_WAIT)); | |
528f664c SL |
795 | } |
796 | ||
4f083fd7 | 797 | /* |
7188ac27 KM |
798 | * Seek on a file |
799 | * | |
800 | * Nothing to do, so just return. | |
4f083fd7 | 801 | */ |
7188ac27 KM |
802 | /* ARGSUSED */ |
803 | ufs_seek(vp, oldoff, newoff, cred) | |
804 | struct vnode *vp; | |
805 | off_t oldoff, newoff; | |
806 | struct ucred *cred; | |
528f664c | 807 | { |
7188ac27 KM |
808 | |
809 | return (0); | |
810 | } | |
811 | ||
812 | /* | |
813 | * ufs remove | |
814 | * Hard to avoid races here, especially | |
815 | * in unlinking directories. | |
816 | */ | |
817 | ufs_remove(ndp) | |
818 | struct nameidata *ndp; | |
819 | { | |
820 | register struct inode *ip, *dp; | |
821 | int error; | |
822 | ||
823 | ip = VTOI(ndp->ni_vp); | |
824 | dp = VTOI(ndp->ni_dvp); | |
825 | error = dirremove(ndp); | |
826 | if (!error) { | |
827 | ip->i_nlink--; | |
828 | ip->i_flag |= ICHG; | |
528f664c | 829 | } |
7188ac27 KM |
830 | if (dp == ip) |
831 | vrele(ITOV(ip)); | |
832 | else | |
833 | iput(ip); | |
834 | iput(dp); | |
835 | return (error); | |
4f083fd7 SL |
836 | } |
837 | ||
838 | /* | |
7188ac27 | 839 | * link vnode call |
4f083fd7 | 840 | */ |
7188ac27 KM |
841 | ufs_link(vp, ndp) |
842 | register struct vnode *vp; | |
843 | register struct nameidata *ndp; | |
4f083fd7 | 844 | { |
7188ac27 KM |
845 | register struct inode *ip = VTOI(vp); |
846 | int error; | |
4f083fd7 | 847 | |
7188ac27 KM |
848 | if (ndp->ni_dvp != vp) |
849 | ILOCK(ip); | |
850 | if (ip->i_nlink == LINK_MAX - 1) { | |
851 | error = EMLINK; | |
852 | goto out; | |
853 | } | |
854 | ip->i_nlink++; | |
855 | ip->i_flag |= ICHG; | |
856 | error = iupdat(ip, &time, &time, 1); | |
857 | if (!error) | |
858 | error = direnter(ip, ndp); | |
859 | out: | |
860 | if (ndp->ni_dvp != vp) | |
861 | IUNLOCK(ip); | |
862 | if (error) { | |
863 | ip->i_nlink--; | |
82252d2b | 864 | ip->i_flag |= ICHG; |
7188ac27 KM |
865 | } |
866 | return (error); | |
528f664c SL |
867 | } |
868 | ||
4f083fd7 SL |
869 | /* |
870 | * Rename system call. | |
871 | * rename("foo", "bar"); | |
872 | * is essentially | |
873 | * unlink("bar"); | |
874 | * link("foo", "bar"); | |
875 | * unlink("foo"); | |
876 | * but ``atomically''. Can't do full commit without saving state in the | |
877 | * inode on disk which isn't feasible at this time. Best we can do is | |
878 | * always guarantee the target exists. | |
879 | * | |
880 | * Basic algorithm is: | |
881 | * | |
882 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 883 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
884 | * from underneath us while we work (it may be truncated by |
885 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
886 | * 2) Link source to destination. If destination already exists, |
887 | * delete it first. | |
68f21562 KM |
888 | * 3) Unlink source reference to inode if still around. If a |
889 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
890 | * is different from the source, patch the ".." entry in the |
891 | * directory. | |
4f083fd7 | 892 | */ |
7188ac27 KM |
893 | ufs_rename(fndp, tndp) |
894 | register struct nameidata *fndp, *tndp; | |
528f664c | 895 | { |
4f083fd7 | 896 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
897 | struct dirtemplate dirbuf; |
898 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 899 | int error = 0; |
4f083fd7 | 900 | |
7188ac27 KM |
901 | dp = VTOI(fndp->ni_dvp); |
902 | ip = VTOI(fndp->ni_vp); | |
903 | ILOCK(ip); | |
4f083fd7 | 904 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 905 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 906 | |
4f083fd7 | 907 | /* |
046f18d1 | 908 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 909 | */ |
7188ac27 KM |
910 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
911 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
912 | IUNLOCK(ip); | |
913 | ufs_abortop(fndp); | |
914 | ufs_abortop(tndp); | |
915 | return (EINVAL); | |
4f083fd7 | 916 | } |
68f21562 | 917 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
918 | oldparent = dp->i_number; |
919 | doingdirectory++; | |
920 | } | |
7188ac27 | 921 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
922 | |
923 | /* | |
924 | * 1) Bump link count while we're moving stuff | |
925 | * around. If we crash somewhere before | |
926 | * completing our work, the link count | |
927 | * may be wrong, but correctable. | |
928 | */ | |
929 | ip->i_nlink++; | |
930 | ip->i_flag |= ICHG; | |
7188ac27 | 931 | error = iupdat(ip, &time, &time, 1); |
a388503d | 932 | IUNLOCK(ip); |
4f083fd7 SL |
933 | |
934 | /* | |
935 | * When the target exists, both the directory | |
7188ac27 | 936 | * and target vnodes are returned locked. |
4f083fd7 | 937 | */ |
7188ac27 KM |
938 | dp = VTOI(tndp->ni_dvp); |
939 | xp = NULL; | |
940 | if (tndp->ni_vp) | |
941 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
942 | /* |
943 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
944 | * parent) then the source directory must not be in the |
945 | * directory heirarchy above the target, as this would | |
946 | * orphan everything below the source directory. Also | |
947 | * the user must have write permission in the source so | |
948 | * as to be able to change "..". We must repeat the call | |
949 | * to namei, as the parent directory is unlocked by the | |
950 | * call to checkpath(). | |
046f18d1 | 951 | */ |
68f21562 KM |
952 | if (oldparent != dp->i_number) |
953 | newparent = dp->i_number; | |
954 | if (doingdirectory && newparent) { | |
4b61628b | 955 | if (error = ufs_access(fndp->ni_vp, VWRITE, tndp->ni_cred)) |
81552f0f | 956 | goto bad; |
7188ac27 | 957 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 958 | do { |
7188ac27 | 959 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 960 | if (xp != NULL) |
79cf21e2 | 961 | iput(xp); |
7188ac27 | 962 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 963 | goto out; |
7188ac27 | 964 | if (error = namei(tndp)) |
81552f0f | 965 | goto out; |
7188ac27 KM |
966 | xp = NULL; |
967 | if (tndp->ni_vp) | |
968 | xp = VTOI(tndp->ni_vp); | |
969 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 970 | } |
4f083fd7 SL |
971 | /* |
972 | * 2) If target doesn't exist, link the target | |
973 | * to the source and unlink the source. | |
974 | * Otherwise, rewrite the target directory | |
975 | * entry to reference the source inode and | |
976 | * expunge the original entry's existence. | |
977 | */ | |
4f083fd7 | 978 | if (xp == NULL) { |
7188ac27 KM |
979 | if (dp->i_dev != ip->i_dev) |
980 | panic("rename: EXDEV"); | |
4f083fd7 | 981 | /* |
68f21562 KM |
982 | * Account for ".." in new directory. |
983 | * When source and destination have the same | |
984 | * parent we don't fool with the link count. | |
4f083fd7 | 985 | */ |
68f21562 | 986 | if (doingdirectory && newparent) { |
4f083fd7 SL |
987 | dp->i_nlink++; |
988 | dp->i_flag |= ICHG; | |
7188ac27 | 989 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 990 | } |
7188ac27 | 991 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
992 | goto out; |
993 | } else { | |
7188ac27 KM |
994 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
995 | panic("rename: EXDEV"); | |
e69c3c9c SL |
996 | /* |
997 | * Short circuit rename(foo, foo). | |
998 | */ | |
999 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1000 | panic("rename: same file"); |
80cee150 JB |
1001 | /* |
1002 | * If the parent directory is "sticky", then the user must | |
1003 | * own the parent directory, or the destination of the rename, | |
1004 | * otherwise the destination may not be changed (except by | |
1005 | * root). This implements append-only directories. | |
1006 | */ | |
7188ac27 KM |
1007 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
1008 | tndp->ni_cred->cr_uid != dp->i_uid && | |
1009 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
1010 | error = EPERM; |
1011 | goto bad; | |
1012 | } | |
4f083fd7 | 1013 | /* |
a5390dce SL |
1014 | * Target must be empty if a directory |
1015 | * and have no links to it. | |
4f083fd7 SL |
1016 | * Also, insure source and target are |
1017 | * compatible (both directories, or both | |
1018 | * not directories). | |
1019 | */ | |
1020 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
1021 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
1022 | xp->i_nlink > 2) { | |
a5390dce | 1023 | error = ENOTEMPTY; |
4f083fd7 SL |
1024 | goto bad; |
1025 | } | |
1026 | if (!doingdirectory) { | |
a5390dce | 1027 | error = ENOTDIR; |
4f083fd7 SL |
1028 | goto bad; |
1029 | } | |
7188ac27 | 1030 | cache_purge(ITOV(dp)); |
4f083fd7 | 1031 | } else if (doingdirectory) { |
a5390dce | 1032 | error = EISDIR; |
4f083fd7 SL |
1033 | goto bad; |
1034 | } | |
7188ac27 KM |
1035 | if (error = dirrewrite(dp, ip, tndp)) |
1036 | goto bad; | |
1037 | vput(ITOV(dp)); | |
4f083fd7 | 1038 | /* |
a5390dce SL |
1039 | * Adjust the link count of the target to |
1040 | * reflect the dirrewrite above. If this is | |
1041 | * a directory it is empty and there are | |
1042 | * no links to it, so we can squash the inode and | |
1043 | * any space associated with it. We disallowed | |
1044 | * renaming over top of a directory with links to | |
68f21562 KM |
1045 | * it above, as the remaining link would point to |
1046 | * a directory without "." or ".." entries. | |
4f083fd7 | 1047 | */ |
a5390dce | 1048 | xp->i_nlink--; |
4f083fd7 | 1049 | if (doingdirectory) { |
a5390dce SL |
1050 | if (--xp->i_nlink != 0) |
1051 | panic("rename: linked directory"); | |
e16fa59e | 1052 | error = itrunc(xp, (u_long)0, IO_SYNC); |
a5390dce | 1053 | } |
4f083fd7 | 1054 | xp->i_flag |= ICHG; |
88d931ba | 1055 | iput(xp); |
31db12cb | 1056 | xp = NULL; |
4f083fd7 SL |
1057 | } |
1058 | ||
1059 | /* | |
1060 | * 3) Unlink the source. | |
1061 | */ | |
7188ac27 KM |
1062 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
1063 | (void)namei(fndp); | |
1064 | if (fndp->ni_vp != NULL) { | |
1065 | xp = VTOI(fndp->ni_vp); | |
1066 | dp = VTOI(fndp->ni_dvp); | |
1067 | } else { | |
79cf21e2 KM |
1068 | if (fndp->ni_dvp != NULL) |
1069 | vput(fndp->ni_dvp); | |
7188ac27 | 1070 | xp = NULL; |
4f1a9037 | 1071 | dp = NULL; |
7188ac27 | 1072 | } |
4f083fd7 | 1073 | /* |
7188ac27 | 1074 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1075 | * changed while the new name has been entered. If the source is |
1076 | * a file then the entry may have been unlinked or renamed. In | |
1077 | * either case there is no further work to be done. If the source | |
1078 | * is a directory then it cannot have been rmdir'ed; its link | |
1079 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1080 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1081 | * rename. |
4f083fd7 | 1082 | */ |
4f1a9037 | 1083 | if (xp != ip) { |
68f21562 | 1084 | if (doingdirectory) |
4f1a9037 | 1085 | panic("rename: lost dir entry"); |
68f21562 | 1086 | } else { |
4f083fd7 | 1087 | /* |
68f21562 KM |
1088 | * If the source is a directory with a |
1089 | * new parent, the link count of the old | |
1090 | * parent directory must be decremented | |
1091 | * and ".." set to point to the new parent. | |
4f083fd7 | 1092 | */ |
68f21562 | 1093 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1094 | dp->i_nlink--; |
1095 | dp->i_flag |= ICHG; | |
86cdabf6 | 1096 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, |
7188ac27 | 1097 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 KM |
1098 | UIO_SYSSPACE, IO_NODELOCKED, |
1099 | tndp->ni_cred, (int *)0); | |
68f21562 KM |
1100 | if (error == 0) { |
1101 | if (dirbuf.dotdot_namlen != 2 || | |
1102 | dirbuf.dotdot_name[0] != '.' || | |
1103 | dirbuf.dotdot_name[1] != '.') { | |
8ad54d9e | 1104 | dirbad(xp, 12, "rename: mangled dir"); |
68f21562 KM |
1105 | } else { |
1106 | dirbuf.dotdot_ino = newparent; | |
86cdabf6 | 1107 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), |
68f21562 KM |
1108 | (caddr_t)&dirbuf, |
1109 | sizeof (struct dirtemplate), | |
93e273b9 | 1110 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1111 | IO_NODELOCKED|IO_SYNC, |
7188ac27 KM |
1112 | tndp->ni_cred, (int *)0); |
1113 | cache_purge(ITOV(dp)); | |
68f21562 KM |
1114 | } |
1115 | } | |
4f083fd7 | 1116 | } |
7188ac27 KM |
1117 | error = dirremove(fndp); |
1118 | if (!error) { | |
68f21562 KM |
1119 | xp->i_nlink--; |
1120 | xp->i_flag |= ICHG; | |
4f083fd7 | 1121 | } |
68f21562 | 1122 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1123 | } |
4f083fd7 | 1124 | if (dp) |
7188ac27 | 1125 | vput(ITOV(dp)); |
68f21562 | 1126 | if (xp) |
7188ac27 KM |
1127 | vput(ITOV(xp)); |
1128 | vrele(ITOV(ip)); | |
1129 | return (error); | |
a5390dce | 1130 | |
4f083fd7 | 1131 | bad: |
4f083fd7 | 1132 | if (xp) |
7188ac27 KM |
1133 | vput(ITOV(xp)); |
1134 | vput(ITOV(dp)); | |
4f083fd7 SL |
1135 | out: |
1136 | ip->i_nlink--; | |
1137 | ip->i_flag |= ICHG; | |
7188ac27 KM |
1138 | vrele(ITOV(ip)); |
1139 | return (error); | |
64d3a787 | 1140 | } |
88a7a62a SL |
1141 | |
1142 | /* | |
1143 | * A virgin directory (no blushing please). | |
1144 | */ | |
1145 | struct dirtemplate mastertemplate = { | |
1146 | 0, 12, 1, ".", | |
1147 | 0, DIRBLKSIZ - 12, 2, ".." | |
1148 | }; | |
1149 | ||
1150 | /* | |
1151 | * Mkdir system call | |
1152 | */ | |
7188ac27 KM |
1153 | ufs_mkdir(ndp, vap) |
1154 | struct nameidata *ndp; | |
1155 | struct vattr *vap; | |
88a7a62a | 1156 | { |
88a7a62a | 1157 | register struct inode *ip, *dp; |
7188ac27 KM |
1158 | struct inode *tip; |
1159 | struct vnode *dvp; | |
88a7a62a | 1160 | struct dirtemplate dirtemplate; |
7188ac27 KM |
1161 | int error; |
1162 | int dmode; | |
1163 | ||
1164 | dvp = ndp->ni_dvp; | |
1165 | dp = VTOI(dvp); | |
1166 | dmode = vap->va_mode&0777; | |
1167 | dmode |= IFDIR; | |
88a7a62a SL |
1168 | /* |
1169 | * Must simulate part of maknode here | |
1170 | * in order to acquire the inode, but | |
1171 | * not have it entered in the parent | |
1172 | * directory. The entry is made later | |
1173 | * after writing "." and ".." entries out. | |
1174 | */ | |
4b61628b | 1175 | if (error = ialloc(dp, dirpref(dp->i_fs), dmode, ndp->ni_cred, &tip)) { |
88a7a62a | 1176 | iput(dp); |
7188ac27 | 1177 | return (error); |
88a7a62a | 1178 | } |
7188ac27 | 1179 | ip = tip; |
4b61628b KM |
1180 | ip->i_uid = ndp->ni_cred->cr_uid; |
1181 | ip->i_gid = dp->i_gid; | |
88a7a62a | 1182 | #ifdef QUOTA |
4b61628b KM |
1183 | if ((error = getinoquota(ip)) || |
1184 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1185 | ifree(ip, ip->i_number, dmode); | |
1186 | iput(ip); | |
1187 | iput(dp); | |
1188 | return (error); | |
1189 | } | |
88a7a62a SL |
1190 | #endif |
1191 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1192 | ip->i_mode = dmode; |
1193 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 1194 | ip->i_nlink = 2; |
7188ac27 | 1195 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
1196 | |
1197 | /* | |
1198 | * Bump link count in parent directory | |
1199 | * to reflect work done below. Should | |
1200 | * be done before reference is created | |
1201 | * so reparation is possible if we crash. | |
1202 | */ | |
1203 | dp->i_nlink++; | |
1204 | dp->i_flag |= ICHG; | |
7188ac27 | 1205 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
1206 | |
1207 | /* | |
1208 | * Initialize directory with "." | |
1209 | * and ".." from static template. | |
1210 | */ | |
1211 | dirtemplate = mastertemplate; | |
1212 | dirtemplate.dot_ino = ip->i_number; | |
1213 | dirtemplate.dotdot_ino = dp->i_number; | |
86cdabf6 | 1214 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, |
7188ac27 | 1215 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1216 | IO_NODELOCKED|IO_SYNC, ndp->ni_cred, (int *)0); |
7188ac27 | 1217 | if (error) { |
88a7a62a SL |
1218 | dp->i_nlink--; |
1219 | dp->i_flag |= ICHG; | |
1220 | goto bad; | |
1221 | } | |
7188ac27 KM |
1222 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
1223 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
1224 | else |
1225 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
1226 | /* |
1227 | * Directory all set up, now | |
1228 | * install the entry for it in | |
1229 | * the parent directory. | |
1230 | */ | |
7188ac27 | 1231 | error = direnter(ip, ndp); |
88a7a62a | 1232 | dp = NULL; |
7188ac27 | 1233 | if (error) { |
715baff1 | 1234 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
1235 | error = namei(ndp); |
1236 | if (!error) { | |
1237 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
1238 | dp->i_nlink--; |
1239 | dp->i_flag |= ICHG; | |
1240 | } | |
1241 | } | |
1242 | bad: | |
1243 | /* | |
1244 | * No need to do an explicit itrunc here, | |
7188ac27 | 1245 | * vrele will do this for us because we set |
88a7a62a SL |
1246 | * the link count to 0. |
1247 | */ | |
7188ac27 | 1248 | if (error) { |
88a7a62a SL |
1249 | ip->i_nlink = 0; |
1250 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
1251 | iput(ip); |
1252 | } else | |
1253 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
1254 | if (dp) |
1255 | iput(dp); | |
7188ac27 | 1256 | return (error); |
88a7a62a SL |
1257 | } |
1258 | ||
1259 | /* | |
1260 | * Rmdir system call. | |
1261 | */ | |
7188ac27 KM |
1262 | ufs_rmdir(ndp) |
1263 | register struct nameidata *ndp; | |
88a7a62a | 1264 | { |
88a7a62a | 1265 | register struct inode *ip, *dp; |
7188ac27 KM |
1266 | int error = 0; |
1267 | ||
1268 | ip = VTOI(ndp->ni_vp); | |
1269 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
1270 | /* |
1271 | * No rmdir "." please. | |
1272 | */ | |
1273 | if (dp == ip) { | |
7188ac27 | 1274 | vrele(ITOV(dp)); |
88a7a62a | 1275 | iput(ip); |
7188ac27 | 1276 | return (EINVAL); |
88a7a62a SL |
1277 | } |
1278 | /* | |
1279 | * Verify the directory is empty (and valid). | |
1280 | * (Rmdir ".." won't be valid since | |
1281 | * ".." will contain a reference to | |
1282 | * the current directory and thus be | |
1283 | * non-empty.) | |
1284 | */ | |
7188ac27 KM |
1285 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
1286 | error = ENOTEMPTY; | |
88a7a62a SL |
1287 | goto out; |
1288 | } | |
1289 | /* | |
1290 | * Delete reference to directory before purging | |
1291 | * inode. If we crash in between, the directory | |
1292 | * will be reattached to lost+found, | |
1293 | */ | |
7188ac27 | 1294 | if (error = dirremove(ndp)) |
88a7a62a SL |
1295 | goto out; |
1296 | dp->i_nlink--; | |
1297 | dp->i_flag |= ICHG; | |
7188ac27 | 1298 | cache_purge(ITOV(dp)); |
88a7a62a | 1299 | iput(dp); |
7188ac27 | 1300 | ndp->ni_dvp = NULL; |
88a7a62a SL |
1301 | /* |
1302 | * Truncate inode. The only stuff left | |
1303 | * in the directory is "." and "..". The | |
1304 | * "." reference is inconsequential since | |
1305 | * we're quashing it. The ".." reference | |
1306 | * has already been adjusted above. We've | |
1307 | * removed the "." reference and the reference | |
1308 | * in the parent directory, but there may be | |
1309 | * other hard links so decrement by 2 and | |
1310 | * worry about them later. | |
1311 | */ | |
1312 | ip->i_nlink -= 2; | |
e16fa59e | 1313 | error = itrunc(ip, (u_long)0, IO_SYNC); |
7188ac27 | 1314 | cache_purge(ITOV(ip)); |
88a7a62a | 1315 | out: |
7188ac27 | 1316 | if (ndp->ni_dvp) |
88a7a62a SL |
1317 | iput(dp); |
1318 | iput(ip); | |
7188ac27 | 1319 | return (error); |
88a7a62a SL |
1320 | } |
1321 | ||
7188ac27 KM |
1322 | /* |
1323 | * symlink -- make a symbolic link | |
1324 | */ | |
1325 | ufs_symlink(ndp, vap, target) | |
1326 | struct nameidata *ndp; | |
1327 | struct vattr *vap; | |
1328 | char *target; | |
1329 | { | |
1330 | struct inode *ip; | |
1331 | int error; | |
1332 | ||
1333 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
1334 | if (error) | |
1335 | return (error); | |
86cdabf6 KM |
1336 | error = vn_rdwr(UIO_WRITE, ITOV(ip), target, strlen(target), (off_t)0, |
1337 | UIO_SYSSPACE, IO_NODELOCKED, ndp->ni_cred, (int *)0); | |
7188ac27 KM |
1338 | iput(ip); |
1339 | return (error); | |
1340 | } | |
1341 | ||
1342 | /* | |
1343 | * Vnode op for read and write | |
1344 | */ | |
930730fd | 1345 | ufs_readdir(vp, uio, cred, eofflagp) |
7188ac27 KM |
1346 | struct vnode *vp; |
1347 | register struct uio *uio; | |
7188ac27 | 1348 | struct ucred *cred; |
930730fd | 1349 | int *eofflagp; |
88a7a62a | 1350 | { |
86cdabf6 | 1351 | int count, lost, error; |
88a7a62a | 1352 | |
7188ac27 KM |
1353 | count = uio->uio_resid; |
1354 | count &= ~(DIRBLKSIZ - 1); | |
86cdabf6 KM |
1355 | lost = uio->uio_resid - count; |
1356 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1357 | return (EINVAL); |
7188ac27 KM |
1358 | uio->uio_resid = count; |
1359 | uio->uio_iov->iov_len = count; | |
86cdabf6 KM |
1360 | error = ufs_read(vp, uio, 0, cred); |
1361 | uio->uio_resid += lost; | |
930730fd KM |
1362 | if ((VTOI(vp)->i_size - uio->uio_offset) <= 0) |
1363 | *eofflagp = 1; | |
1364 | else | |
1365 | *eofflagp = 0; | |
7188ac27 KM |
1366 | return (error); |
1367 | } | |
1368 | ||
1369 | /* | |
1370 | * Return target name of a symbolic link | |
1371 | */ | |
1372 | ufs_readlink(vp, uiop, cred) | |
1373 | struct vnode *vp; | |
1374 | struct uio *uiop; | |
1375 | struct ucred *cred; | |
1376 | { | |
1377 | ||
86cdabf6 | 1378 | return (ufs_read(vp, uiop, 0, cred)); |
7188ac27 KM |
1379 | } |
1380 | ||
1381 | /* | |
1382 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1383 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1384 | */ | |
1385 | ufs_abortop(ndp) | |
1386 | register struct nameidata *ndp; | |
1387 | { | |
7188ac27 | 1388 | |
7188ac27 | 1389 | if (ndp->ni_dvp) { |
7359b026 KM |
1390 | if (VOP_ISLOCKED(ndp->ni_dvp)) |
1391 | VOP_UNLOCK(ndp->ni_dvp); | |
7188ac27 | 1392 | vrele(ndp->ni_dvp); |
88a7a62a | 1393 | } |
7359b026 KM |
1394 | if (ndp->ni_vp) { |
1395 | if (VOP_ISLOCKED(ndp->ni_vp)) | |
1396 | VOP_UNLOCK(ndp->ni_vp); | |
1397 | vrele(ndp->ni_vp); | |
1398 | } | |
7188ac27 KM |
1399 | return; |
1400 | } | |
1401 | ||
1c3ebc10 KM |
1402 | /* |
1403 | * Lock an inode. | |
1404 | */ | |
7188ac27 KM |
1405 | ufs_lock(vp) |
1406 | struct vnode *vp; | |
1407 | { | |
1408 | register struct inode *ip = VTOI(vp); | |
1409 | ||
1410 | ILOCK(ip); | |
1411 | return (0); | |
1412 | } | |
1413 | ||
1c3ebc10 KM |
1414 | /* |
1415 | * Unlock an inode. | |
1416 | */ | |
7188ac27 KM |
1417 | ufs_unlock(vp) |
1418 | struct vnode *vp; | |
1419 | { | |
1420 | register struct inode *ip = VTOI(vp); | |
1421 | ||
1422 | if (!(ip->i_flag & ILOCKED)) | |
1423 | panic("ufs_unlock NOT LOCKED"); | |
1424 | IUNLOCK(ip); | |
1425 | return (0); | |
1426 | } | |
1427 | ||
1c3ebc10 KM |
1428 | /* |
1429 | * Check for a locked inode. | |
1430 | */ | |
1431 | ufs_islocked(vp) | |
1432 | struct vnode *vp; | |
1433 | { | |
1434 | ||
1435 | if (VTOI(vp)->i_flag & ILOCKED) | |
1436 | return (1); | |
1437 | return (0); | |
1438 | } | |
1439 | ||
7188ac27 KM |
1440 | /* |
1441 | * Get access to bmap | |
1442 | */ | |
1443 | ufs_bmap(vp, bn, vpp, bnp) | |
1444 | struct vnode *vp; | |
1445 | daddr_t bn; | |
1446 | struct vnode **vpp; | |
1447 | daddr_t *bnp; | |
1448 | { | |
1449 | struct inode *ip = VTOI(vp); | |
1450 | ||
1451 | if (vpp != NULL) | |
1452 | *vpp = ip->i_devvp; | |
1453 | if (bnp == NULL) | |
1454 | return (0); | |
1455 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1456 | } |
1457 | ||
1458 | /* | |
7188ac27 | 1459 | * Just call the device strategy routine |
88a7a62a | 1460 | */ |
e16fa59e KM |
1461 | int checkoverlap = 1; |
1462 | ||
7188ac27 KM |
1463 | ufs_strategy(bp) |
1464 | register struct buf *bp; | |
88a7a62a | 1465 | { |
e16fa59e KM |
1466 | register struct inode *ip = VTOI(bp->b_vp); |
1467 | register struct buf *ep; | |
1468 | struct vnode *vp; | |
1469 | struct buf *ebp; | |
1470 | daddr_t start, last; | |
1471 | int error; | |
1472 | ||
1473 | if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR) | |
1474 | panic("ufs_strategy: spec"); | |
1475 | if (bp->b_blkno == bp->b_lblkno) { | |
1476 | if (error = bmap(ip, bp->b_lblkno, &bp->b_blkno)) | |
1477 | return (error); | |
20aa076b | 1478 | if ((long)bp->b_blkno == -1) |
e16fa59e | 1479 | clrbuf(bp); |
e16fa59e | 1480 | } |
20aa076b KM |
1481 | if ((long)bp->b_blkno == -1) { |
1482 | biodone(bp); | |
e16fa59e | 1483 | return (0); |
20aa076b | 1484 | } |
e16fa59e KM |
1485 | if (checkoverlap) { |
1486 | ebp = &buf[nbuf]; | |
1487 | start = bp->b_blkno; | |
1488 | last = start + btodb(bp->b_bcount) - 1; | |
1489 | for (ep = buf; ep < ebp; ep++) { | |
1490 | if (ep == bp || (ep->b_flags & B_INVAL) || | |
fcd4f15a | 1491 | ep->b_vp == NULLVP) |
e16fa59e KM |
1492 | continue; |
1493 | if (VOP_BMAP(ep->b_vp, (daddr_t)0, &vp, (daddr_t)0)) | |
1494 | continue; | |
1495 | if (vp != ip->i_devvp) | |
1496 | continue; | |
1497 | /* look for overlap */ | |
1498 | if (ep->b_bcount == 0 || ep->b_blkno > last || | |
1499 | ep->b_blkno + btodb(ep->b_bcount) <= start) | |
1500 | continue; | |
20aa076b KM |
1501 | vprint("Disk overlap", vp); |
1502 | printf("\tstart %d, end %d overlap start %d, end %d\n", | |
1503 | start, last, ep->b_blkno, | |
1504 | ep->b_blkno + btodb(ep->b_bcount) - 1); | |
e16fa59e KM |
1505 | } |
1506 | } | |
1507 | vp = ip->i_devvp; | |
1508 | bp->b_dev = vp->v_rdev; | |
1509 | (*(vp->v_op->vn_strategy))(bp); | |
7188ac27 KM |
1510 | return (0); |
1511 | } | |
88a7a62a | 1512 | |
e16fa59e KM |
1513 | /* |
1514 | * Print out the contents of an inode. | |
1515 | */ | |
1516 | ufs_print(vp) | |
1517 | struct vnode *vp; | |
1518 | { | |
1519 | register struct inode *ip = VTOI(vp); | |
1520 | ||
a8f829ed KM |
1521 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1522 | major(ip->i_dev), minor(ip->i_dev)); | |
1523 | #ifdef FIFO | |
1524 | if (vp->v_type == VFIFO) | |
1525 | fifo_printinfo(vp); | |
1526 | #endif /* FIFO */ | |
1527 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
96bae3e0 KM |
1528 | if (ip->i_spare0 == 0) |
1529 | return; | |
1530 | printf("\towner pid %d", ip->i_spare0); | |
1531 | if (ip->i_spare1) | |
1532 | printf(" waiting pid %d", ip->i_spare1); | |
1533 | printf("\n"); | |
e16fa59e KM |
1534 | } |
1535 | ||
24a31b70 KM |
1536 | /* |
1537 | * Read wrapper for special devices. | |
1538 | */ | |
1539 | ufsspec_read(vp, uio, ioflag, cred) | |
1540 | struct vnode *vp; | |
1541 | struct uio *uio; | |
1542 | int ioflag; | |
1543 | struct ucred *cred; | |
1544 | { | |
1545 | ||
1546 | /* | |
1547 | * Set access flag. | |
1548 | */ | |
1549 | VTOI(vp)->i_flag |= IACC; | |
1550 | return (spec_read(vp, uio, ioflag, cred)); | |
1551 | } | |
1552 | ||
1553 | /* | |
1554 | * Write wrapper for special devices. | |
1555 | */ | |
1556 | ufsspec_write(vp, uio, ioflag, cred) | |
1557 | struct vnode *vp; | |
1558 | struct uio *uio; | |
1559 | int ioflag; | |
1560 | struct ucred *cred; | |
1561 | { | |
1562 | ||
1563 | /* | |
1564 | * Set update and change flags. | |
1565 | */ | |
1566 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1567 | return (spec_write(vp, uio, ioflag, cred)); | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * Close wrapper for special devices. | |
1572 | * | |
1573 | * Update the times on the inode then do device close. | |
1574 | */ | |
1575 | ufsspec_close(vp, fflag, cred) | |
1576 | struct vnode *vp; | |
1577 | int fflag; | |
1578 | struct ucred *cred; | |
1579 | { | |
1580 | register struct inode *ip = VTOI(vp); | |
1581 | ||
de67eefc | 1582 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 KM |
1583 | ITIMES(ip, &time, &time); |
1584 | return (spec_close(vp, fflag, cred)); | |
1585 | } | |
1586 | ||
d1c43d7f KM |
1587 | #ifdef FIFO |
1588 | /* | |
1589 | * Read wrapper for fifo's | |
1590 | */ | |
1591 | ufsfifo_read(vp, uio, ioflag, cred) | |
1592 | struct vnode *vp; | |
1593 | struct uio *uio; | |
1594 | int ioflag; | |
1595 | struct ucred *cred; | |
1596 | { | |
1597 | ||
1598 | /* | |
1599 | * Set access flag. | |
1600 | */ | |
1601 | VTOI(vp)->i_flag |= IACC; | |
1602 | return (fifo_read(vp, uio, ioflag, cred)); | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Write wrapper for fifo's. | |
1607 | */ | |
1608 | ufsfifo_write(vp, uio, ioflag, cred) | |
1609 | struct vnode *vp; | |
1610 | struct uio *uio; | |
1611 | int ioflag; | |
1612 | struct ucred *cred; | |
1613 | { | |
1614 | ||
1615 | /* | |
1616 | * Set update and change flags. | |
1617 | */ | |
1618 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1619 | return (fifo_write(vp, uio, ioflag, cred)); | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | * Close wrapper for fifo's. | |
1624 | * | |
1625 | * Update the times on the inode then do device close. | |
1626 | */ | |
1627 | ufsfifo_close(vp, fflag, cred) | |
1628 | struct vnode *vp; | |
1629 | int fflag; | |
1630 | struct ucred *cred; | |
1631 | { | |
1632 | register struct inode *ip = VTOI(vp); | |
1633 | ||
1634 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
1635 | ITIMES(ip, &time, &time); | |
1636 | return (fifo_close(vp, fflag, cred)); | |
1637 | } | |
1638 | #endif /* FIFO */ | |
1639 | ||
7188ac27 KM |
1640 | /* |
1641 | * Make a new file. | |
1642 | */ | |
1643 | maknode(mode, ndp, ipp) | |
1644 | int mode; | |
1645 | register struct nameidata *ndp; | |
1646 | struct inode **ipp; | |
1647 | { | |
1648 | register struct inode *ip; | |
1649 | struct inode *tip; | |
1650 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1651 | ino_t ipref; | |
1652 | int error; | |
1653 | ||
1654 | *ipp = 0; | |
4b61628b KM |
1655 | if ((mode & IFMT) == 0) |
1656 | mode |= IFREG; | |
7188ac27 KM |
1657 | if ((mode & IFMT) == IFDIR) |
1658 | ipref = dirpref(pdir->i_fs); | |
1659 | else | |
1660 | ipref = pdir->i_number; | |
4b61628b | 1661 | if (error = ialloc(pdir, ipref, mode, ndp->ni_cred, &tip)) { |
7188ac27 KM |
1662 | iput(pdir); |
1663 | return (error); | |
1664 | } | |
1665 | ip = tip; | |
4b61628b KM |
1666 | ip->i_uid = ndp->ni_cred->cr_uid; |
1667 | ip->i_gid = pdir->i_gid; | |
7188ac27 | 1668 | #ifdef QUOTA |
4b61628b KM |
1669 | if ((error = getinoquota(ip)) || |
1670 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1671 | ifree(ip, ip->i_number, mode); | |
1672 | iput(ip); | |
1673 | iput(pdir); | |
1674 | return (error); | |
1675 | } | |
7188ac27 KM |
1676 | #endif |
1677 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1678 | ip->i_mode = mode; |
1679 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1680 | ip->i_nlink = 1; | |
7188ac27 KM |
1681 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && |
1682 | suser(ndp->ni_cred, NULL)) | |
1683 | ip->i_mode &= ~ISGID; | |
7188ac27 KM |
1684 | |
1685 | /* | |
1686 | * Make sure inode goes to disk before directory entry. | |
1687 | */ | |
4b61628b KM |
1688 | if (error = iupdat(ip, &time, &time, 1)) |
1689 | goto bad; | |
1690 | if (error = direnter(ip, ndp)) { | |
1691 | pdir = NULL; | |
1692 | goto bad; | |
7188ac27 KM |
1693 | } |
1694 | *ipp = ip; | |
1695 | return (0); | |
4b61628b KM |
1696 | |
1697 | bad: | |
1698 | /* | |
1699 | * Write error occurred trying to update the inode | |
1700 | * or the directory so must deallocate the inode. | |
1701 | */ | |
1702 | if (pdir) | |
1703 | iput(pdir); | |
1704 | ip->i_nlink = 0; | |
1705 | ip->i_flag |= ICHG; | |
1706 | iput(ip); | |
1707 | return (error); | |
88a7a62a | 1708 | } |