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 | * | |
15365e07 | 17 | * @(#)ufs_vnops.c 7.44 (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) | |
722a9b31 | 555 | goto good; |
4b61628b KM |
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 | } | |
722a9b31 KM |
575 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
576 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 577 | (void) getinoquota(ip); |
4b61628b | 578 | } |
6cb69bbe | 579 | return (error); |
722a9b31 | 580 | good: |
6cb69bbe KM |
581 | if (getinoquota(ip)) |
582 | panic("chown: lost quota"); | |
583 | #endif /* QUOTA */ | |
4b61628b KM |
584 | if (ouid != uid || ogid != gid) |
585 | ip->i_flag |= ICHG; | |
586 | if (ouid != uid && cred->cr_uid != 0) | |
587 | ip->i_mode &= ~ISUID; | |
588 | if (ogid != gid && cred->cr_uid != 0) | |
589 | ip->i_mode &= ~ISGID; | |
590 | return (0); | |
d67a03eb BJ |
591 | } |
592 | ||
b373e060 KM |
593 | /* |
594 | * Vnode op for reading. | |
595 | */ | |
596 | /* ARGSUSED */ | |
597 | ufs_read(vp, uio, ioflag, cred) | |
598 | struct vnode *vp; | |
599 | register struct uio *uio; | |
600 | int ioflag; | |
601 | struct ucred *cred; | |
602 | { | |
603 | register struct inode *ip = VTOI(vp); | |
604 | register struct fs *fs; | |
605 | struct buf *bp; | |
606 | daddr_t lbn, bn, rablock; | |
20aa076b | 607 | int size, diff, error = 0; |
b373e060 KM |
608 | long n, on, type; |
609 | ||
610 | if (uio->uio_rw != UIO_READ) | |
611 | panic("ufs_read mode"); | |
612 | type = ip->i_mode & IFMT; | |
613 | if (type != IFDIR && type != IFREG && type != IFLNK) | |
614 | panic("ufs_read type"); | |
615 | if (uio->uio_resid == 0) | |
616 | return (0); | |
617 | if (uio->uio_offset < 0) | |
618 | return (EINVAL); | |
619 | ip->i_flag |= IACC; | |
620 | fs = ip->i_fs; | |
621 | do { | |
622 | lbn = lblkno(fs, uio->uio_offset); | |
623 | on = blkoff(fs, uio->uio_offset); | |
624 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
625 | diff = ip->i_size - uio->uio_offset; | |
626 | if (diff <= 0) | |
627 | return (0); | |
628 | if (diff < n) | |
629 | n = diff; | |
b373e060 | 630 | size = blksize(fs, ip, lbn); |
e16fa59e | 631 | rablock = lbn + 1; |
20aa076b KM |
632 | if (vp->v_lastr + 1 == lbn && |
633 | lblktosize(fs, rablock) < ip->i_size) | |
634 | error = breada(ITOV(ip), lbn, size, rablock, | |
635 | blksize(fs, ip, rablock), NOCRED, &bp); | |
b373e060 | 636 | else |
e16fa59e | 637 | error = bread(ITOV(ip), lbn, size, NOCRED, &bp); |
de67eefc | 638 | vp->v_lastr = lbn; |
b373e060 KM |
639 | n = MIN(n, size - bp->b_resid); |
640 | if (error) { | |
641 | brelse(bp); | |
642 | return (error); | |
643 | } | |
644 | error = uiomove(bp->b_un.b_addr + on, (int)n, uio); | |
645 | if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size) | |
646 | bp->b_flags |= B_AGE; | |
647 | brelse(bp); | |
648 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
649 | return (error); | |
650 | } | |
651 | ||
652 | /* | |
653 | * Vnode op for writing. | |
654 | */ | |
655 | ufs_write(vp, uio, ioflag, cred) | |
656 | register struct vnode *vp; | |
657 | struct uio *uio; | |
658 | int ioflag; | |
659 | struct ucred *cred; | |
660 | { | |
661 | register struct inode *ip = VTOI(vp); | |
662 | register struct fs *fs; | |
663 | struct buf *bp; | |
664 | daddr_t lbn, bn; | |
665 | u_long osize; | |
666 | int i, n, on, flags; | |
667 | int count, size, resid, error = 0; | |
668 | ||
669 | if (uio->uio_rw != UIO_WRITE) | |
670 | panic("ufs_write mode"); | |
671 | switch (vp->v_type) { | |
672 | case VREG: | |
673 | if (ioflag & IO_APPEND) | |
674 | uio->uio_offset = ip->i_size; | |
675 | /* fall through */ | |
676 | case VLNK: | |
677 | break; | |
678 | ||
679 | case VDIR: | |
680 | if ((ioflag & IO_SYNC) == 0) | |
681 | panic("ufs_write nonsync dir write"); | |
682 | break; | |
683 | ||
684 | default: | |
685 | panic("ufs_write type"); | |
686 | } | |
687 | if (uio->uio_offset < 0) | |
688 | return (EINVAL); | |
689 | if (uio->uio_resid == 0) | |
690 | return (0); | |
691 | /* | |
692 | * Maybe this should be above the vnode op call, but so long as | |
693 | * file servers have no limits, i don't think it matters | |
694 | */ | |
695 | if (vp->v_type == VREG && | |
696 | uio->uio_offset + uio->uio_resid > | |
697 | u.u_rlimit[RLIMIT_FSIZE].rlim_cur) { | |
698 | psignal(u.u_procp, SIGXFSZ); | |
699 | return (EFBIG); | |
700 | } | |
701 | resid = uio->uio_resid; | |
702 | osize = ip->i_size; | |
703 | fs = ip->i_fs; | |
e16fa59e KM |
704 | flags = 0; |
705 | if (ioflag & IO_SYNC) | |
706 | flags = B_SYNC; | |
b373e060 KM |
707 | do { |
708 | lbn = lblkno(fs, uio->uio_offset); | |
709 | on = blkoff(fs, uio->uio_offset); | |
710 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
711 | if (n < fs->fs_bsize) | |
e16fa59e | 712 | flags |= B_CLRBUF; |
b373e060 | 713 | else |
e16fa59e KM |
714 | flags &= ~B_CLRBUF; |
715 | if (error = balloc(ip, lbn, (int)(on + n), &bp, flags)) | |
b373e060 | 716 | break; |
e16fa59e | 717 | bn = bp->b_blkno; |
b373e060 KM |
718 | if (uio->uio_offset + n > ip->i_size) |
719 | ip->i_size = uio->uio_offset + n; | |
720 | size = blksize(fs, ip, lbn); | |
721 | count = howmany(size, CLBYTES); | |
722 | for (i = 0; i < count; i++) | |
723 | munhash(ip->i_devvp, bn + i * CLBYTES / DEV_BSIZE); | |
b373e060 | 724 | n = MIN(n, size - bp->b_resid); |
b373e060 KM |
725 | error = uiomove(bp->b_un.b_addr + on, n, uio); |
726 | if (ioflag & IO_SYNC) | |
727 | (void) bwrite(bp); | |
728 | else if (n + on == fs->fs_bsize) { | |
729 | bp->b_flags |= B_AGE; | |
730 | bawrite(bp); | |
731 | } else | |
732 | bdwrite(bp); | |
733 | ip->i_flag |= IUPD|ICHG; | |
734 | if (cred->cr_uid != 0) | |
735 | ip->i_mode &= ~(ISUID|ISGID); | |
736 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
737 | if (error && (ioflag & IO_UNIT)) { | |
e16fa59e | 738 | (void) itrunc(ip, osize, ioflag & IO_SYNC); |
b373e060 KM |
739 | uio->uio_offset -= resid - uio->uio_resid; |
740 | uio->uio_resid = resid; | |
741 | } | |
1c05ecaf KM |
742 | if (!error && (ioflag & IO_SYNC)) |
743 | error = iupdat(ip, &time, &time, 1); | |
b373e060 KM |
744 | return (error); |
745 | } | |
746 | ||
7188ac27 KM |
747 | /* ARGSUSED */ |
748 | ufs_ioctl(vp, com, data, fflag, cred) | |
749 | struct vnode *vp; | |
750 | int com; | |
751 | caddr_t data; | |
752 | int fflag; | |
753 | struct ucred *cred; | |
bb1b75f4 | 754 | { |
bb1b75f4 | 755 | |
7188ac27 KM |
756 | return (ENOTTY); |
757 | } | |
758 | ||
759 | /* ARGSUSED */ | |
d1c43d7f | 760 | ufs_select(vp, which, fflags, cred) |
7188ac27 | 761 | struct vnode *vp; |
d1c43d7f | 762 | int which, fflags; |
7188ac27 KM |
763 | struct ucred *cred; |
764 | { | |
765 | ||
7188ac27 | 766 | return (1); /* XXX */ |
bb1b75f4 | 767 | } |
d67a03eb | 768 | |
4f083fd7 | 769 | /* |
7188ac27 KM |
770 | * Mmap a file |
771 | * | |
772 | * NB Currently unsupported. | |
4f083fd7 | 773 | */ |
7188ac27 KM |
774 | /* ARGSUSED */ |
775 | ufs_mmap(vp, fflags, cred) | |
776 | struct vnode *vp; | |
777 | int fflags; | |
778 | struct ucred *cred; | |
d67a03eb | 779 | { |
d67a03eb | 780 | |
7188ac27 | 781 | return (EINVAL); |
d67a03eb | 782 | } |
64d3a787 | 783 | |
4f083fd7 | 784 | /* |
7188ac27 | 785 | * Synch an open file. |
4f083fd7 | 786 | */ |
7188ac27 | 787 | /* ARGSUSED */ |
86cdabf6 | 788 | ufs_fsync(vp, fflags, cred, waitfor) |
7188ac27 KM |
789 | struct vnode *vp; |
790 | int fflags; | |
791 | struct ucred *cred; | |
86cdabf6 | 792 | int waitfor; |
528f664c | 793 | { |
86cdabf6 | 794 | struct inode *ip = VTOI(vp); |
7188ac27 | 795 | |
7188ac27 KM |
796 | if (fflags&FWRITE) |
797 | ip->i_flag |= ICHG; | |
e16fa59e KM |
798 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); |
799 | return (iupdat(ip, &time, &time, waitfor == MNT_WAIT)); | |
528f664c SL |
800 | } |
801 | ||
4f083fd7 | 802 | /* |
7188ac27 KM |
803 | * Seek on a file |
804 | * | |
805 | * Nothing to do, so just return. | |
4f083fd7 | 806 | */ |
7188ac27 KM |
807 | /* ARGSUSED */ |
808 | ufs_seek(vp, oldoff, newoff, cred) | |
809 | struct vnode *vp; | |
810 | off_t oldoff, newoff; | |
811 | struct ucred *cred; | |
528f664c | 812 | { |
7188ac27 KM |
813 | |
814 | return (0); | |
815 | } | |
816 | ||
817 | /* | |
818 | * ufs remove | |
819 | * Hard to avoid races here, especially | |
820 | * in unlinking directories. | |
821 | */ | |
822 | ufs_remove(ndp) | |
823 | struct nameidata *ndp; | |
824 | { | |
825 | register struct inode *ip, *dp; | |
826 | int error; | |
827 | ||
828 | ip = VTOI(ndp->ni_vp); | |
829 | dp = VTOI(ndp->ni_dvp); | |
830 | error = dirremove(ndp); | |
831 | if (!error) { | |
832 | ip->i_nlink--; | |
833 | ip->i_flag |= ICHG; | |
528f664c | 834 | } |
7188ac27 KM |
835 | if (dp == ip) |
836 | vrele(ITOV(ip)); | |
837 | else | |
838 | iput(ip); | |
839 | iput(dp); | |
840 | return (error); | |
4f083fd7 SL |
841 | } |
842 | ||
843 | /* | |
7188ac27 | 844 | * link vnode call |
4f083fd7 | 845 | */ |
7188ac27 KM |
846 | ufs_link(vp, ndp) |
847 | register struct vnode *vp; | |
848 | register struct nameidata *ndp; | |
4f083fd7 | 849 | { |
7188ac27 KM |
850 | register struct inode *ip = VTOI(vp); |
851 | int error; | |
4f083fd7 | 852 | |
7188ac27 KM |
853 | if (ndp->ni_dvp != vp) |
854 | ILOCK(ip); | |
855 | if (ip->i_nlink == LINK_MAX - 1) { | |
856 | error = EMLINK; | |
857 | goto out; | |
858 | } | |
859 | ip->i_nlink++; | |
860 | ip->i_flag |= ICHG; | |
861 | error = iupdat(ip, &time, &time, 1); | |
862 | if (!error) | |
863 | error = direnter(ip, ndp); | |
864 | out: | |
865 | if (ndp->ni_dvp != vp) | |
866 | IUNLOCK(ip); | |
867 | if (error) { | |
868 | ip->i_nlink--; | |
82252d2b | 869 | ip->i_flag |= ICHG; |
7188ac27 KM |
870 | } |
871 | return (error); | |
528f664c SL |
872 | } |
873 | ||
4f083fd7 SL |
874 | /* |
875 | * Rename system call. | |
876 | * rename("foo", "bar"); | |
877 | * is essentially | |
878 | * unlink("bar"); | |
879 | * link("foo", "bar"); | |
880 | * unlink("foo"); | |
881 | * but ``atomically''. Can't do full commit without saving state in the | |
882 | * inode on disk which isn't feasible at this time. Best we can do is | |
883 | * always guarantee the target exists. | |
884 | * | |
885 | * Basic algorithm is: | |
886 | * | |
887 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 888 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
889 | * from underneath us while we work (it may be truncated by |
890 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
891 | * 2) Link source to destination. If destination already exists, |
892 | * delete it first. | |
68f21562 KM |
893 | * 3) Unlink source reference to inode if still around. If a |
894 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
895 | * is different from the source, patch the ".." entry in the |
896 | * directory. | |
4f083fd7 | 897 | */ |
7188ac27 KM |
898 | ufs_rename(fndp, tndp) |
899 | register struct nameidata *fndp, *tndp; | |
528f664c | 900 | { |
4f083fd7 | 901 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
902 | struct dirtemplate dirbuf; |
903 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 904 | int error = 0; |
4f083fd7 | 905 | |
7188ac27 KM |
906 | dp = VTOI(fndp->ni_dvp); |
907 | ip = VTOI(fndp->ni_vp); | |
908 | ILOCK(ip); | |
4f083fd7 | 909 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 910 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 911 | |
4f083fd7 | 912 | /* |
046f18d1 | 913 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 914 | */ |
7188ac27 KM |
915 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
916 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
66955caf KM |
917 | VOP_ABORTOP(tndp); |
918 | vput(tndp->ni_dvp); | |
919 | if (tndp->ni_vp) | |
920 | vput(tndp->ni_vp); | |
921 | VOP_ABORTOP(fndp); | |
922 | vrele(fndp->ni_dvp); | |
923 | vput(fndp->ni_vp); | |
7188ac27 | 924 | return (EINVAL); |
4f083fd7 | 925 | } |
68f21562 | 926 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
927 | oldparent = dp->i_number; |
928 | doingdirectory++; | |
929 | } | |
7188ac27 | 930 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
931 | |
932 | /* | |
933 | * 1) Bump link count while we're moving stuff | |
934 | * around. If we crash somewhere before | |
935 | * completing our work, the link count | |
936 | * may be wrong, but correctable. | |
937 | */ | |
938 | ip->i_nlink++; | |
939 | ip->i_flag |= ICHG; | |
7188ac27 | 940 | error = iupdat(ip, &time, &time, 1); |
a388503d | 941 | IUNLOCK(ip); |
4f083fd7 SL |
942 | |
943 | /* | |
944 | * When the target exists, both the directory | |
7188ac27 | 945 | * and target vnodes are returned locked. |
4f083fd7 | 946 | */ |
7188ac27 KM |
947 | dp = VTOI(tndp->ni_dvp); |
948 | xp = NULL; | |
949 | if (tndp->ni_vp) | |
950 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
951 | /* |
952 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
953 | * parent) then the source directory must not be in the |
954 | * directory heirarchy above the target, as this would | |
955 | * orphan everything below the source directory. Also | |
956 | * the user must have write permission in the source so | |
957 | * as to be able to change "..". We must repeat the call | |
958 | * to namei, as the parent directory is unlocked by the | |
959 | * call to checkpath(). | |
046f18d1 | 960 | */ |
68f21562 KM |
961 | if (oldparent != dp->i_number) |
962 | newparent = dp->i_number; | |
963 | if (doingdirectory && newparent) { | |
48c3b6e8 KM |
964 | VOP_LOCK(fndp->ni_vp); |
965 | error = ufs_access(fndp->ni_vp, VWRITE, tndp->ni_cred); | |
966 | VOP_UNLOCK(fndp->ni_vp); | |
967 | if (error) | |
81552f0f | 968 | goto bad; |
7188ac27 | 969 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 970 | do { |
7188ac27 | 971 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 972 | if (xp != NULL) |
79cf21e2 | 973 | iput(xp); |
7188ac27 | 974 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 975 | goto out; |
7188ac27 | 976 | if (error = namei(tndp)) |
81552f0f | 977 | goto out; |
7188ac27 KM |
978 | xp = NULL; |
979 | if (tndp->ni_vp) | |
980 | xp = VTOI(tndp->ni_vp); | |
981 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 982 | } |
4f083fd7 SL |
983 | /* |
984 | * 2) If target doesn't exist, link the target | |
985 | * to the source and unlink the source. | |
986 | * Otherwise, rewrite the target directory | |
987 | * entry to reference the source inode and | |
988 | * expunge the original entry's existence. | |
989 | */ | |
4f083fd7 | 990 | if (xp == NULL) { |
7188ac27 KM |
991 | if (dp->i_dev != ip->i_dev) |
992 | panic("rename: EXDEV"); | |
4f083fd7 | 993 | /* |
68f21562 KM |
994 | * Account for ".." in new directory. |
995 | * When source and destination have the same | |
996 | * parent we don't fool with the link count. | |
4f083fd7 | 997 | */ |
68f21562 | 998 | if (doingdirectory && newparent) { |
4f083fd7 SL |
999 | dp->i_nlink++; |
1000 | dp->i_flag |= ICHG; | |
7188ac27 | 1001 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 1002 | } |
7188ac27 | 1003 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
1004 | goto out; |
1005 | } else { | |
7188ac27 KM |
1006 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
1007 | panic("rename: EXDEV"); | |
e69c3c9c SL |
1008 | /* |
1009 | * Short circuit rename(foo, foo). | |
1010 | */ | |
1011 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1012 | panic("rename: same file"); |
80cee150 JB |
1013 | /* |
1014 | * If the parent directory is "sticky", then the user must | |
1015 | * own the parent directory, or the destination of the rename, | |
1016 | * otherwise the destination may not be changed (except by | |
1017 | * root). This implements append-only directories. | |
1018 | */ | |
7188ac27 KM |
1019 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
1020 | tndp->ni_cred->cr_uid != dp->i_uid && | |
1021 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
1022 | error = EPERM; |
1023 | goto bad; | |
1024 | } | |
4f083fd7 | 1025 | /* |
a5390dce SL |
1026 | * Target must be empty if a directory |
1027 | * and have no links to it. | |
4f083fd7 SL |
1028 | * Also, insure source and target are |
1029 | * compatible (both directories, or both | |
1030 | * not directories). | |
1031 | */ | |
1032 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
1033 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
1034 | xp->i_nlink > 2) { | |
a5390dce | 1035 | error = ENOTEMPTY; |
4f083fd7 SL |
1036 | goto bad; |
1037 | } | |
1038 | if (!doingdirectory) { | |
a5390dce | 1039 | error = ENOTDIR; |
4f083fd7 SL |
1040 | goto bad; |
1041 | } | |
7188ac27 | 1042 | cache_purge(ITOV(dp)); |
4f083fd7 | 1043 | } else if (doingdirectory) { |
a5390dce | 1044 | error = EISDIR; |
4f083fd7 SL |
1045 | goto bad; |
1046 | } | |
7188ac27 KM |
1047 | if (error = dirrewrite(dp, ip, tndp)) |
1048 | goto bad; | |
1049 | vput(ITOV(dp)); | |
4f083fd7 | 1050 | /* |
a5390dce SL |
1051 | * Adjust the link count of the target to |
1052 | * reflect the dirrewrite above. If this is | |
1053 | * a directory it is empty and there are | |
1054 | * no links to it, so we can squash the inode and | |
1055 | * any space associated with it. We disallowed | |
1056 | * renaming over top of a directory with links to | |
68f21562 KM |
1057 | * it above, as the remaining link would point to |
1058 | * a directory without "." or ".." entries. | |
4f083fd7 | 1059 | */ |
a5390dce | 1060 | xp->i_nlink--; |
4f083fd7 | 1061 | if (doingdirectory) { |
a5390dce SL |
1062 | if (--xp->i_nlink != 0) |
1063 | panic("rename: linked directory"); | |
e16fa59e | 1064 | error = itrunc(xp, (u_long)0, IO_SYNC); |
a5390dce | 1065 | } |
4f083fd7 | 1066 | xp->i_flag |= ICHG; |
88d931ba | 1067 | iput(xp); |
31db12cb | 1068 | xp = NULL; |
4f083fd7 SL |
1069 | } |
1070 | ||
1071 | /* | |
1072 | * 3) Unlink the source. | |
1073 | */ | |
7188ac27 KM |
1074 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
1075 | (void)namei(fndp); | |
1076 | if (fndp->ni_vp != NULL) { | |
1077 | xp = VTOI(fndp->ni_vp); | |
1078 | dp = VTOI(fndp->ni_dvp); | |
1079 | } else { | |
79cf21e2 KM |
1080 | if (fndp->ni_dvp != NULL) |
1081 | vput(fndp->ni_dvp); | |
7188ac27 | 1082 | xp = NULL; |
4f1a9037 | 1083 | dp = NULL; |
7188ac27 | 1084 | } |
4f083fd7 | 1085 | /* |
7188ac27 | 1086 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1087 | * changed while the new name has been entered. If the source is |
1088 | * a file then the entry may have been unlinked or renamed. In | |
1089 | * either case there is no further work to be done. If the source | |
1090 | * is a directory then it cannot have been rmdir'ed; its link | |
1091 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1092 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1093 | * rename. |
4f083fd7 | 1094 | */ |
4f1a9037 | 1095 | if (xp != ip) { |
68f21562 | 1096 | if (doingdirectory) |
4f1a9037 | 1097 | panic("rename: lost dir entry"); |
68f21562 | 1098 | } else { |
4f083fd7 | 1099 | /* |
68f21562 KM |
1100 | * If the source is a directory with a |
1101 | * new parent, the link count of the old | |
1102 | * parent directory must be decremented | |
1103 | * and ".." set to point to the new parent. | |
4f083fd7 | 1104 | */ |
68f21562 | 1105 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1106 | dp->i_nlink--; |
1107 | dp->i_flag |= ICHG; | |
86cdabf6 | 1108 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, |
7188ac27 | 1109 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 KM |
1110 | UIO_SYSSPACE, IO_NODELOCKED, |
1111 | tndp->ni_cred, (int *)0); | |
68f21562 KM |
1112 | if (error == 0) { |
1113 | if (dirbuf.dotdot_namlen != 2 || | |
1114 | dirbuf.dotdot_name[0] != '.' || | |
1115 | dirbuf.dotdot_name[1] != '.') { | |
8ad54d9e | 1116 | dirbad(xp, 12, "rename: mangled dir"); |
68f21562 KM |
1117 | } else { |
1118 | dirbuf.dotdot_ino = newparent; | |
86cdabf6 | 1119 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), |
68f21562 KM |
1120 | (caddr_t)&dirbuf, |
1121 | sizeof (struct dirtemplate), | |
93e273b9 | 1122 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1123 | IO_NODELOCKED|IO_SYNC, |
7188ac27 KM |
1124 | tndp->ni_cred, (int *)0); |
1125 | cache_purge(ITOV(dp)); | |
68f21562 KM |
1126 | } |
1127 | } | |
4f083fd7 | 1128 | } |
7188ac27 KM |
1129 | error = dirremove(fndp); |
1130 | if (!error) { | |
68f21562 KM |
1131 | xp->i_nlink--; |
1132 | xp->i_flag |= ICHG; | |
4f083fd7 | 1133 | } |
68f21562 | 1134 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1135 | } |
4f083fd7 | 1136 | if (dp) |
7188ac27 | 1137 | vput(ITOV(dp)); |
68f21562 | 1138 | if (xp) |
7188ac27 KM |
1139 | vput(ITOV(xp)); |
1140 | vrele(ITOV(ip)); | |
1141 | return (error); | |
a5390dce | 1142 | |
4f083fd7 | 1143 | bad: |
4f083fd7 | 1144 | if (xp) |
7188ac27 KM |
1145 | vput(ITOV(xp)); |
1146 | vput(ITOV(dp)); | |
4f083fd7 SL |
1147 | out: |
1148 | ip->i_nlink--; | |
1149 | ip->i_flag |= ICHG; | |
7188ac27 KM |
1150 | vrele(ITOV(ip)); |
1151 | return (error); | |
64d3a787 | 1152 | } |
88a7a62a SL |
1153 | |
1154 | /* | |
1155 | * A virgin directory (no blushing please). | |
1156 | */ | |
1157 | struct dirtemplate mastertemplate = { | |
1158 | 0, 12, 1, ".", | |
1159 | 0, DIRBLKSIZ - 12, 2, ".." | |
1160 | }; | |
1161 | ||
1162 | /* | |
1163 | * Mkdir system call | |
1164 | */ | |
7188ac27 KM |
1165 | ufs_mkdir(ndp, vap) |
1166 | struct nameidata *ndp; | |
1167 | struct vattr *vap; | |
88a7a62a | 1168 | { |
88a7a62a | 1169 | register struct inode *ip, *dp; |
7188ac27 KM |
1170 | struct inode *tip; |
1171 | struct vnode *dvp; | |
88a7a62a | 1172 | struct dirtemplate dirtemplate; |
7188ac27 KM |
1173 | int error; |
1174 | int dmode; | |
1175 | ||
1176 | dvp = ndp->ni_dvp; | |
1177 | dp = VTOI(dvp); | |
1178 | dmode = vap->va_mode&0777; | |
1179 | dmode |= IFDIR; | |
88a7a62a SL |
1180 | /* |
1181 | * Must simulate part of maknode here | |
1182 | * in order to acquire the inode, but | |
1183 | * not have it entered in the parent | |
1184 | * directory. The entry is made later | |
1185 | * after writing "." and ".." entries out. | |
1186 | */ | |
4b61628b | 1187 | if (error = ialloc(dp, dirpref(dp->i_fs), dmode, ndp->ni_cred, &tip)) { |
88a7a62a | 1188 | iput(dp); |
7188ac27 | 1189 | return (error); |
88a7a62a | 1190 | } |
7188ac27 | 1191 | ip = tip; |
4b61628b KM |
1192 | ip->i_uid = ndp->ni_cred->cr_uid; |
1193 | ip->i_gid = dp->i_gid; | |
88a7a62a | 1194 | #ifdef QUOTA |
4b61628b KM |
1195 | if ((error = getinoquota(ip)) || |
1196 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1197 | ifree(ip, ip->i_number, dmode); | |
1198 | iput(ip); | |
1199 | iput(dp); | |
1200 | return (error); | |
1201 | } | |
88a7a62a SL |
1202 | #endif |
1203 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1204 | ip->i_mode = dmode; |
1205 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 1206 | ip->i_nlink = 2; |
7188ac27 | 1207 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
1208 | |
1209 | /* | |
1210 | * Bump link count in parent directory | |
1211 | * to reflect work done below. Should | |
1212 | * be done before reference is created | |
1213 | * so reparation is possible if we crash. | |
1214 | */ | |
1215 | dp->i_nlink++; | |
1216 | dp->i_flag |= ICHG; | |
7188ac27 | 1217 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
1218 | |
1219 | /* | |
1220 | * Initialize directory with "." | |
1221 | * and ".." from static template. | |
1222 | */ | |
1223 | dirtemplate = mastertemplate; | |
1224 | dirtemplate.dot_ino = ip->i_number; | |
1225 | dirtemplate.dotdot_ino = dp->i_number; | |
86cdabf6 | 1226 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, |
7188ac27 | 1227 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1228 | IO_NODELOCKED|IO_SYNC, ndp->ni_cred, (int *)0); |
7188ac27 | 1229 | if (error) { |
88a7a62a SL |
1230 | dp->i_nlink--; |
1231 | dp->i_flag |= ICHG; | |
1232 | goto bad; | |
1233 | } | |
15365e07 | 1234 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) { |
7188ac27 | 1235 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ |
15365e07 | 1236 | } else { |
23de9f20 | 1237 | ip->i_size = DIRBLKSIZ; |
15365e07 KM |
1238 | ip->i_flag |= ICHG; |
1239 | } | |
88a7a62a SL |
1240 | /* |
1241 | * Directory all set up, now | |
1242 | * install the entry for it in | |
1243 | * the parent directory. | |
1244 | */ | |
7188ac27 | 1245 | error = direnter(ip, ndp); |
88a7a62a | 1246 | dp = NULL; |
7188ac27 | 1247 | if (error) { |
715baff1 | 1248 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
1249 | error = namei(ndp); |
1250 | if (!error) { | |
1251 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
1252 | dp->i_nlink--; |
1253 | dp->i_flag |= ICHG; | |
1254 | } | |
1255 | } | |
1256 | bad: | |
1257 | /* | |
1258 | * No need to do an explicit itrunc here, | |
7188ac27 | 1259 | * vrele will do this for us because we set |
88a7a62a SL |
1260 | * the link count to 0. |
1261 | */ | |
7188ac27 | 1262 | if (error) { |
88a7a62a SL |
1263 | ip->i_nlink = 0; |
1264 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
1265 | iput(ip); |
1266 | } else | |
1267 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
1268 | if (dp) |
1269 | iput(dp); | |
7188ac27 | 1270 | return (error); |
88a7a62a SL |
1271 | } |
1272 | ||
1273 | /* | |
1274 | * Rmdir system call. | |
1275 | */ | |
7188ac27 KM |
1276 | ufs_rmdir(ndp) |
1277 | register struct nameidata *ndp; | |
88a7a62a | 1278 | { |
88a7a62a | 1279 | register struct inode *ip, *dp; |
7188ac27 KM |
1280 | int error = 0; |
1281 | ||
1282 | ip = VTOI(ndp->ni_vp); | |
1283 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
1284 | /* |
1285 | * No rmdir "." please. | |
1286 | */ | |
1287 | if (dp == ip) { | |
7188ac27 | 1288 | vrele(ITOV(dp)); |
88a7a62a | 1289 | iput(ip); |
7188ac27 | 1290 | return (EINVAL); |
88a7a62a SL |
1291 | } |
1292 | /* | |
1293 | * Verify the directory is empty (and valid). | |
1294 | * (Rmdir ".." won't be valid since | |
1295 | * ".." will contain a reference to | |
1296 | * the current directory and thus be | |
1297 | * non-empty.) | |
1298 | */ | |
7188ac27 KM |
1299 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
1300 | error = ENOTEMPTY; | |
88a7a62a SL |
1301 | goto out; |
1302 | } | |
1303 | /* | |
1304 | * Delete reference to directory before purging | |
1305 | * inode. If we crash in between, the directory | |
1306 | * will be reattached to lost+found, | |
1307 | */ | |
7188ac27 | 1308 | if (error = dirremove(ndp)) |
88a7a62a SL |
1309 | goto out; |
1310 | dp->i_nlink--; | |
1311 | dp->i_flag |= ICHG; | |
7188ac27 | 1312 | cache_purge(ITOV(dp)); |
88a7a62a | 1313 | iput(dp); |
7188ac27 | 1314 | ndp->ni_dvp = NULL; |
88a7a62a SL |
1315 | /* |
1316 | * Truncate inode. The only stuff left | |
1317 | * in the directory is "." and "..". The | |
1318 | * "." reference is inconsequential since | |
1319 | * we're quashing it. The ".." reference | |
1320 | * has already been adjusted above. We've | |
1321 | * removed the "." reference and the reference | |
1322 | * in the parent directory, but there may be | |
1323 | * other hard links so decrement by 2 and | |
1324 | * worry about them later. | |
1325 | */ | |
1326 | ip->i_nlink -= 2; | |
e16fa59e | 1327 | error = itrunc(ip, (u_long)0, IO_SYNC); |
7188ac27 | 1328 | cache_purge(ITOV(ip)); |
88a7a62a | 1329 | out: |
7188ac27 | 1330 | if (ndp->ni_dvp) |
88a7a62a SL |
1331 | iput(dp); |
1332 | iput(ip); | |
7188ac27 | 1333 | return (error); |
88a7a62a SL |
1334 | } |
1335 | ||
7188ac27 KM |
1336 | /* |
1337 | * symlink -- make a symbolic link | |
1338 | */ | |
1339 | ufs_symlink(ndp, vap, target) | |
1340 | struct nameidata *ndp; | |
1341 | struct vattr *vap; | |
1342 | char *target; | |
1343 | { | |
1344 | struct inode *ip; | |
1345 | int error; | |
1346 | ||
1347 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
1348 | if (error) | |
1349 | return (error); | |
86cdabf6 KM |
1350 | error = vn_rdwr(UIO_WRITE, ITOV(ip), target, strlen(target), (off_t)0, |
1351 | UIO_SYSSPACE, IO_NODELOCKED, ndp->ni_cred, (int *)0); | |
7188ac27 KM |
1352 | iput(ip); |
1353 | return (error); | |
1354 | } | |
1355 | ||
1356 | /* | |
1357 | * Vnode op for read and write | |
1358 | */ | |
930730fd | 1359 | ufs_readdir(vp, uio, cred, eofflagp) |
7188ac27 KM |
1360 | struct vnode *vp; |
1361 | register struct uio *uio; | |
7188ac27 | 1362 | struct ucred *cred; |
930730fd | 1363 | int *eofflagp; |
88a7a62a | 1364 | { |
86cdabf6 | 1365 | int count, lost, error; |
88a7a62a | 1366 | |
7188ac27 KM |
1367 | count = uio->uio_resid; |
1368 | count &= ~(DIRBLKSIZ - 1); | |
86cdabf6 KM |
1369 | lost = uio->uio_resid - count; |
1370 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1371 | return (EINVAL); |
7188ac27 KM |
1372 | uio->uio_resid = count; |
1373 | uio->uio_iov->iov_len = count; | |
86cdabf6 KM |
1374 | error = ufs_read(vp, uio, 0, cred); |
1375 | uio->uio_resid += lost; | |
930730fd KM |
1376 | if ((VTOI(vp)->i_size - uio->uio_offset) <= 0) |
1377 | *eofflagp = 1; | |
1378 | else | |
1379 | *eofflagp = 0; | |
7188ac27 KM |
1380 | return (error); |
1381 | } | |
1382 | ||
1383 | /* | |
1384 | * Return target name of a symbolic link | |
1385 | */ | |
1386 | ufs_readlink(vp, uiop, cred) | |
1387 | struct vnode *vp; | |
1388 | struct uio *uiop; | |
1389 | struct ucred *cred; | |
1390 | { | |
1391 | ||
86cdabf6 | 1392 | return (ufs_read(vp, uiop, 0, cred)); |
7188ac27 KM |
1393 | } |
1394 | ||
1395 | /* | |
1396 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
66955caf | 1397 | * done. Nothing to do at the moment. |
7188ac27 | 1398 | */ |
66955caf | 1399 | /* ARGSUSED */ |
7188ac27 | 1400 | ufs_abortop(ndp) |
66955caf | 1401 | struct nameidata *ndp; |
7188ac27 | 1402 | { |
7188ac27 | 1403 | |
66955caf | 1404 | return (0); |
7188ac27 KM |
1405 | } |
1406 | ||
1c3ebc10 KM |
1407 | /* |
1408 | * Lock an inode. | |
1409 | */ | |
7188ac27 KM |
1410 | ufs_lock(vp) |
1411 | struct vnode *vp; | |
1412 | { | |
1413 | register struct inode *ip = VTOI(vp); | |
1414 | ||
1415 | ILOCK(ip); | |
1416 | return (0); | |
1417 | } | |
1418 | ||
1c3ebc10 KM |
1419 | /* |
1420 | * Unlock an inode. | |
1421 | */ | |
7188ac27 KM |
1422 | ufs_unlock(vp) |
1423 | struct vnode *vp; | |
1424 | { | |
1425 | register struct inode *ip = VTOI(vp); | |
1426 | ||
1427 | if (!(ip->i_flag & ILOCKED)) | |
1428 | panic("ufs_unlock NOT LOCKED"); | |
1429 | IUNLOCK(ip); | |
1430 | return (0); | |
1431 | } | |
1432 | ||
1c3ebc10 KM |
1433 | /* |
1434 | * Check for a locked inode. | |
1435 | */ | |
1436 | ufs_islocked(vp) | |
1437 | struct vnode *vp; | |
1438 | { | |
1439 | ||
1440 | if (VTOI(vp)->i_flag & ILOCKED) | |
1441 | return (1); | |
1442 | return (0); | |
1443 | } | |
1444 | ||
7188ac27 KM |
1445 | /* |
1446 | * Get access to bmap | |
1447 | */ | |
1448 | ufs_bmap(vp, bn, vpp, bnp) | |
1449 | struct vnode *vp; | |
1450 | daddr_t bn; | |
1451 | struct vnode **vpp; | |
1452 | daddr_t *bnp; | |
1453 | { | |
1454 | struct inode *ip = VTOI(vp); | |
1455 | ||
1456 | if (vpp != NULL) | |
1457 | *vpp = ip->i_devvp; | |
1458 | if (bnp == NULL) | |
1459 | return (0); | |
4f1ff475 | 1460 | return (bmap(ip, bn, bnp)); |
88a7a62a SL |
1461 | } |
1462 | ||
1463 | /* | |
4f1ff475 KM |
1464 | * Calculate the logical to physical mapping if not done already, |
1465 | * then call the device strategy routine. | |
88a7a62a | 1466 | */ |
4f1ff475 | 1467 | int checkoverlap = 0; |
e16fa59e | 1468 | |
7188ac27 KM |
1469 | ufs_strategy(bp) |
1470 | register struct buf *bp; | |
88a7a62a | 1471 | { |
e16fa59e | 1472 | register struct inode *ip = VTOI(bp->b_vp); |
e16fa59e | 1473 | struct vnode *vp; |
e16fa59e KM |
1474 | int error; |
1475 | ||
1476 | if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR) | |
1477 | panic("ufs_strategy: spec"); | |
1478 | if (bp->b_blkno == bp->b_lblkno) { | |
1479 | if (error = bmap(ip, bp->b_lblkno, &bp->b_blkno)) | |
1480 | return (error); | |
20aa076b | 1481 | if ((long)bp->b_blkno == -1) |
e16fa59e | 1482 | clrbuf(bp); |
e16fa59e | 1483 | } |
20aa076b KM |
1484 | if ((long)bp->b_blkno == -1) { |
1485 | biodone(bp); | |
e16fa59e | 1486 | return (0); |
20aa076b | 1487 | } |
4f1ff475 | 1488 | #ifdef DIAGNOSTIC |
e16fa59e | 1489 | if (checkoverlap) { |
4f1ff475 KM |
1490 | register struct buf *ep; |
1491 | struct buf *ebp; | |
1492 | daddr_t start, last; | |
1493 | ||
e16fa59e KM |
1494 | ebp = &buf[nbuf]; |
1495 | start = bp->b_blkno; | |
1496 | last = start + btodb(bp->b_bcount) - 1; | |
1497 | for (ep = buf; ep < ebp; ep++) { | |
1498 | if (ep == bp || (ep->b_flags & B_INVAL) || | |
fcd4f15a | 1499 | ep->b_vp == NULLVP) |
e16fa59e KM |
1500 | continue; |
1501 | if (VOP_BMAP(ep->b_vp, (daddr_t)0, &vp, (daddr_t)0)) | |
1502 | continue; | |
1503 | if (vp != ip->i_devvp) | |
1504 | continue; | |
1505 | /* look for overlap */ | |
1506 | if (ep->b_bcount == 0 || ep->b_blkno > last || | |
1507 | ep->b_blkno + btodb(ep->b_bcount) <= start) | |
1508 | continue; | |
20aa076b KM |
1509 | vprint("Disk overlap", vp); |
1510 | printf("\tstart %d, end %d overlap start %d, end %d\n", | |
1511 | start, last, ep->b_blkno, | |
1512 | ep->b_blkno + btodb(ep->b_bcount) - 1); | |
4f1ff475 | 1513 | panic("Disk buffer overlap"); |
e16fa59e KM |
1514 | } |
1515 | } | |
4f1ff475 | 1516 | #endif /* DIAGNOSTIC */ |
e16fa59e KM |
1517 | vp = ip->i_devvp; |
1518 | bp->b_dev = vp->v_rdev; | |
1519 | (*(vp->v_op->vn_strategy))(bp); | |
7188ac27 KM |
1520 | return (0); |
1521 | } | |
88a7a62a | 1522 | |
e16fa59e KM |
1523 | /* |
1524 | * Print out the contents of an inode. | |
1525 | */ | |
1526 | ufs_print(vp) | |
1527 | struct vnode *vp; | |
1528 | { | |
1529 | register struct inode *ip = VTOI(vp); | |
1530 | ||
a8f829ed KM |
1531 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1532 | major(ip->i_dev), minor(ip->i_dev)); | |
1533 | #ifdef FIFO | |
1534 | if (vp->v_type == VFIFO) | |
1535 | fifo_printinfo(vp); | |
1536 | #endif /* FIFO */ | |
1537 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
96bae3e0 KM |
1538 | if (ip->i_spare0 == 0) |
1539 | return; | |
1540 | printf("\towner pid %d", ip->i_spare0); | |
1541 | if (ip->i_spare1) | |
1542 | printf(" waiting pid %d", ip->i_spare1); | |
1543 | printf("\n"); | |
e16fa59e KM |
1544 | } |
1545 | ||
24a31b70 KM |
1546 | /* |
1547 | * Read wrapper for special devices. | |
1548 | */ | |
1549 | ufsspec_read(vp, uio, ioflag, cred) | |
1550 | struct vnode *vp; | |
1551 | struct uio *uio; | |
1552 | int ioflag; | |
1553 | struct ucred *cred; | |
1554 | { | |
1555 | ||
1556 | /* | |
1557 | * Set access flag. | |
1558 | */ | |
1559 | VTOI(vp)->i_flag |= IACC; | |
1560 | return (spec_read(vp, uio, ioflag, cred)); | |
1561 | } | |
1562 | ||
1563 | /* | |
1564 | * Write wrapper for special devices. | |
1565 | */ | |
1566 | ufsspec_write(vp, uio, ioflag, cred) | |
1567 | struct vnode *vp; | |
1568 | struct uio *uio; | |
1569 | int ioflag; | |
1570 | struct ucred *cred; | |
1571 | { | |
1572 | ||
1573 | /* | |
1574 | * Set update and change flags. | |
1575 | */ | |
1576 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1577 | return (spec_write(vp, uio, ioflag, cred)); | |
1578 | } | |
1579 | ||
1580 | /* | |
1581 | * Close wrapper for special devices. | |
1582 | * | |
1583 | * Update the times on the inode then do device close. | |
1584 | */ | |
1585 | ufsspec_close(vp, fflag, cred) | |
1586 | struct vnode *vp; | |
1587 | int fflag; | |
1588 | struct ucred *cred; | |
1589 | { | |
1590 | register struct inode *ip = VTOI(vp); | |
1591 | ||
de67eefc | 1592 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 KM |
1593 | ITIMES(ip, &time, &time); |
1594 | return (spec_close(vp, fflag, cred)); | |
1595 | } | |
1596 | ||
d1c43d7f KM |
1597 | #ifdef FIFO |
1598 | /* | |
1599 | * Read wrapper for fifo's | |
1600 | */ | |
1601 | ufsfifo_read(vp, uio, ioflag, cred) | |
1602 | struct vnode *vp; | |
1603 | struct uio *uio; | |
1604 | int ioflag; | |
1605 | struct ucred *cred; | |
1606 | { | |
1607 | ||
1608 | /* | |
1609 | * Set access flag. | |
1610 | */ | |
1611 | VTOI(vp)->i_flag |= IACC; | |
1612 | return (fifo_read(vp, uio, ioflag, cred)); | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * Write wrapper for fifo's. | |
1617 | */ | |
1618 | ufsfifo_write(vp, uio, ioflag, cred) | |
1619 | struct vnode *vp; | |
1620 | struct uio *uio; | |
1621 | int ioflag; | |
1622 | struct ucred *cred; | |
1623 | { | |
1624 | ||
1625 | /* | |
1626 | * Set update and change flags. | |
1627 | */ | |
1628 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1629 | return (fifo_write(vp, uio, ioflag, cred)); | |
1630 | } | |
1631 | ||
1632 | /* | |
1633 | * Close wrapper for fifo's. | |
1634 | * | |
1635 | * Update the times on the inode then do device close. | |
1636 | */ | |
1637 | ufsfifo_close(vp, fflag, cred) | |
1638 | struct vnode *vp; | |
1639 | int fflag; | |
1640 | struct ucred *cred; | |
1641 | { | |
1642 | register struct inode *ip = VTOI(vp); | |
1643 | ||
1644 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
1645 | ITIMES(ip, &time, &time); | |
1646 | return (fifo_close(vp, fflag, cred)); | |
1647 | } | |
1648 | #endif /* FIFO */ | |
1649 | ||
7188ac27 KM |
1650 | /* |
1651 | * Make a new file. | |
1652 | */ | |
1653 | maknode(mode, ndp, ipp) | |
1654 | int mode; | |
1655 | register struct nameidata *ndp; | |
1656 | struct inode **ipp; | |
1657 | { | |
1658 | register struct inode *ip; | |
1659 | struct inode *tip; | |
1660 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1661 | ino_t ipref; | |
1662 | int error; | |
1663 | ||
1664 | *ipp = 0; | |
4b61628b KM |
1665 | if ((mode & IFMT) == 0) |
1666 | mode |= IFREG; | |
7188ac27 KM |
1667 | if ((mode & IFMT) == IFDIR) |
1668 | ipref = dirpref(pdir->i_fs); | |
1669 | else | |
1670 | ipref = pdir->i_number; | |
4b61628b | 1671 | if (error = ialloc(pdir, ipref, mode, ndp->ni_cred, &tip)) { |
7188ac27 KM |
1672 | iput(pdir); |
1673 | return (error); | |
1674 | } | |
1675 | ip = tip; | |
4b61628b KM |
1676 | ip->i_uid = ndp->ni_cred->cr_uid; |
1677 | ip->i_gid = pdir->i_gid; | |
7188ac27 | 1678 | #ifdef QUOTA |
4b61628b KM |
1679 | if ((error = getinoquota(ip)) || |
1680 | (error = chkiq(ip, 1, ndp->ni_cred, 0))) { | |
1681 | ifree(ip, ip->i_number, mode); | |
1682 | iput(ip); | |
1683 | iput(pdir); | |
1684 | return (error); | |
1685 | } | |
7188ac27 KM |
1686 | #endif |
1687 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1688 | ip->i_mode = mode; |
1689 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1690 | ip->i_nlink = 1; | |
7188ac27 KM |
1691 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && |
1692 | suser(ndp->ni_cred, NULL)) | |
1693 | ip->i_mode &= ~ISGID; | |
7188ac27 KM |
1694 | |
1695 | /* | |
1696 | * Make sure inode goes to disk before directory entry. | |
1697 | */ | |
4b61628b KM |
1698 | if (error = iupdat(ip, &time, &time, 1)) |
1699 | goto bad; | |
1700 | if (error = direnter(ip, ndp)) { | |
1701 | pdir = NULL; | |
1702 | goto bad; | |
7188ac27 KM |
1703 | } |
1704 | *ipp = ip; | |
1705 | return (0); | |
4b61628b KM |
1706 | |
1707 | bad: | |
1708 | /* | |
1709 | * Write error occurred trying to update the inode | |
1710 | * or the directory so must deallocate the inode. | |
1711 | */ | |
1712 | if (pdir) | |
1713 | iput(pdir); | |
1714 | ip->i_nlink = 0; | |
1715 | ip->i_flag |= ICHG; | |
1716 | iput(ip); | |
1717 | return (error); | |
88a7a62a | 1718 | } |