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 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
7188ac27 | 6 | * |
a62786b9 | 7 | * @(#)ffs_vnops.c 7.46 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
94368568 JB |
10 | #include "param.h" |
11 | #include "systm.h" | |
94368568 JB |
12 | #include "user.h" |
13 | #include "kernel.h" | |
14 | #include "file.h" | |
15 | #include "stat.h" | |
94368568 JB |
16 | #include "buf.h" |
17 | #include "proc.h" | |
94368568 JB |
18 | #include "socket.h" |
19 | #include "socketvar.h" | |
7188ac27 | 20 | #include "conf.h" |
94368568 | 21 | #include "mount.h" |
7188ac27 | 22 | #include "vnode.h" |
0f93ba7b | 23 | #include "specdev.h" |
4b61628b | 24 | #include "../ufs/quota.h" |
7188ac27 KM |
25 | #include "../ufs/inode.h" |
26 | #include "../ufs/fs.h" | |
3e78e260 | 27 | |
4f083fd7 | 28 | /* |
7188ac27 | 29 | * Global vfs data structures for ufs |
4f083fd7 | 30 | */ |
3e78e260 | 31 | |
7188ac27 KM |
32 | int ufs_lookup(), |
33 | ufs_create(), | |
34 | ufs_mknod(), | |
35 | ufs_open(), | |
36 | ufs_close(), | |
37 | ufs_access(), | |
38 | ufs_getattr(), | |
39 | ufs_setattr(), | |
40 | ufs_read(), | |
41 | ufs_write(), | |
42 | ufs_ioctl(), | |
43 | ufs_select(), | |
44 | ufs_mmap(), | |
45 | ufs_fsync(), | |
46 | ufs_seek(), | |
47 | ufs_remove(), | |
48 | ufs_link(), | |
49 | ufs_rename(), | |
50 | ufs_mkdir(), | |
51 | ufs_rmdir(), | |
52 | ufs_symlink(), | |
53 | ufs_readdir(), | |
54 | ufs_readlink(), | |
55 | ufs_abortop(), | |
56 | ufs_inactive(), | |
e8a3816c | 57 | ufs_reclaim(), |
7188ac27 KM |
58 | ufs_lock(), |
59 | ufs_unlock(), | |
60 | ufs_bmap(), | |
e16fa59e | 61 | ufs_strategy(), |
1c3ebc10 KM |
62 | ufs_print(), |
63 | ufs_islocked(); | |
7188ac27 KM |
64 | |
65 | struct vnodeops ufs_vnodeops = { | |
e16fa59e KM |
66 | ufs_lookup, /* lookup */ |
67 | ufs_create, /* create */ | |
68 | ufs_mknod, /* mknod */ | |
69 | ufs_open, /* open */ | |
70 | ufs_close, /* close */ | |
71 | ufs_access, /* access */ | |
72 | ufs_getattr, /* getattr */ | |
73 | ufs_setattr, /* setattr */ | |
74 | ufs_read, /* read */ | |
75 | ufs_write, /* write */ | |
76 | ufs_ioctl, /* ioctl */ | |
77 | ufs_select, /* select */ | |
78 | ufs_mmap, /* mmap */ | |
79 | ufs_fsync, /* fsync */ | |
80 | ufs_seek, /* seek */ | |
81 | ufs_remove, /* remove */ | |
82 | ufs_link, /* link */ | |
83 | ufs_rename, /* rename */ | |
84 | ufs_mkdir, /* mkdir */ | |
85 | ufs_rmdir, /* rmdir */ | |
86 | ufs_symlink, /* symlink */ | |
87 | ufs_readdir, /* readdir */ | |
88 | ufs_readlink, /* readlink */ | |
89 | ufs_abortop, /* abortop */ | |
90 | ufs_inactive, /* inactive */ | |
91 | ufs_reclaim, /* reclaim */ | |
92 | ufs_lock, /* lock */ | |
93 | ufs_unlock, /* unlock */ | |
94 | ufs_bmap, /* bmap */ | |
95 | ufs_strategy, /* strategy */ | |
96 | ufs_print, /* print */ | |
1c3ebc10 | 97 | ufs_islocked, /* islocked */ |
7188ac27 KM |
98 | }; |
99 | ||
f09fe6d3 KM |
100 | int spec_lookup(), |
101 | spec_open(), | |
24a31b70 KM |
102 | ufsspec_read(), |
103 | ufsspec_write(), | |
f09fe6d3 | 104 | spec_strategy(), |
e16fa59e | 105 | spec_bmap(), |
f09fe6d3 KM |
106 | spec_ioctl(), |
107 | spec_select(), | |
24a31b70 | 108 | ufsspec_close(), |
f09fe6d3 KM |
109 | spec_badop(), |
110 | spec_nullop(); | |
111 | ||
112 | struct vnodeops spec_inodeops = { | |
86cdabf6 KM |
113 | spec_lookup, /* lookup */ |
114 | spec_badop, /* create */ | |
115 | spec_badop, /* mknod */ | |
116 | spec_open, /* open */ | |
24a31b70 | 117 | ufsspec_close, /* close */ |
86cdabf6 KM |
118 | ufs_access, /* access */ |
119 | ufs_getattr, /* getattr */ | |
120 | ufs_setattr, /* setattr */ | |
24a31b70 KM |
121 | ufsspec_read, /* read */ |
122 | ufsspec_write, /* write */ | |
86cdabf6 KM |
123 | spec_ioctl, /* ioctl */ |
124 | spec_select, /* select */ | |
125 | spec_badop, /* mmap */ | |
126 | spec_nullop, /* fsync */ | |
127 | spec_badop, /* seek */ | |
128 | spec_badop, /* remove */ | |
129 | spec_badop, /* link */ | |
130 | spec_badop, /* rename */ | |
131 | spec_badop, /* mkdir */ | |
132 | spec_badop, /* rmdir */ | |
133 | spec_badop, /* symlink */ | |
134 | spec_badop, /* readdir */ | |
135 | spec_badop, /* readlink */ | |
136 | spec_badop, /* abortop */ | |
137 | ufs_inactive, /* inactive */ | |
138 | ufs_reclaim, /* reclaim */ | |
139 | ufs_lock, /* lock */ | |
140 | ufs_unlock, /* unlock */ | |
e16fa59e | 141 | spec_bmap, /* bmap */ |
86cdabf6 | 142 | spec_strategy, /* strategy */ |
e16fa59e | 143 | ufs_print, /* print */ |
1c3ebc10 | 144 | ufs_islocked, /* islocked */ |
f09fe6d3 KM |
145 | }; |
146 | ||
d1c43d7f KM |
147 | #ifdef FIFO |
148 | int fifo_lookup(), | |
149 | fifo_open(), | |
150 | ufsfifo_read(), | |
151 | ufsfifo_write(), | |
152 | fifo_bmap(), | |
153 | fifo_ioctl(), | |
154 | fifo_select(), | |
155 | ufsfifo_close(), | |
156 | fifo_print(), | |
157 | fifo_badop(), | |
158 | fifo_nullop(); | |
159 | ||
160 | struct vnodeops fifo_inodeops = { | |
161 | fifo_lookup, /* lookup */ | |
162 | fifo_badop, /* create */ | |
163 | fifo_badop, /* mknod */ | |
164 | fifo_open, /* open */ | |
165 | ufsfifo_close, /* close */ | |
166 | ufs_access, /* access */ | |
167 | ufs_getattr, /* getattr */ | |
168 | ufs_setattr, /* setattr */ | |
169 | ufsfifo_read, /* read */ | |
170 | ufsfifo_write, /* write */ | |
171 | fifo_ioctl, /* ioctl */ | |
172 | fifo_select, /* select */ | |
173 | fifo_badop, /* mmap */ | |
174 | fifo_nullop, /* fsync */ | |
175 | fifo_badop, /* seek */ | |
176 | fifo_badop, /* remove */ | |
177 | fifo_badop, /* link */ | |
178 | fifo_badop, /* rename */ | |
179 | fifo_badop, /* mkdir */ | |
180 | fifo_badop, /* rmdir */ | |
181 | fifo_badop, /* symlink */ | |
182 | fifo_badop, /* readdir */ | |
183 | fifo_badop, /* readlink */ | |
184 | fifo_badop, /* abortop */ | |
185 | ufs_inactive, /* inactive */ | |
186 | ufs_reclaim, /* reclaim */ | |
187 | ufs_lock, /* lock */ | |
188 | ufs_unlock, /* unlock */ | |
189 | fifo_bmap, /* bmap */ | |
190 | fifo_badop, /* strategy */ | |
191 | ufs_print, /* print */ | |
192 | ufs_islocked, /* islocked */ | |
193 | }; | |
194 | #endif /* FIFO */ | |
195 | ||
196 | enum vtype iftovt_tab[16] = { | |
197 | VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON, | |
198 | VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD, | |
7188ac27 | 199 | }; |
d1c43d7f KM |
200 | int vttoif_tab[9] = { |
201 | 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFIFO, IFMT, | |
7188ac27 | 202 | }; |
3e78e260 | 203 | |
4f083fd7 | 204 | /* |
7188ac27 | 205 | * Create a regular file |
4f083fd7 | 206 | */ |
7188ac27 KM |
207 | ufs_create(ndp, vap) |
208 | struct nameidata *ndp; | |
209 | struct vattr *vap; | |
3e78e260 | 210 | { |
7188ac27 KM |
211 | struct inode *ip; |
212 | int error; | |
3e78e260 | 213 | |
7188ac27 KM |
214 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
215 | return (error); | |
216 | ndp->ni_vp = ITOV(ip); | |
217 | return (0); | |
3e78e260 BJ |
218 | } |
219 | ||
4f083fd7 | 220 | /* |
7188ac27 | 221 | * Mknod vnode call |
4f083fd7 | 222 | */ |
7188ac27 KM |
223 | /* ARGSUSED */ |
224 | ufs_mknod(ndp, vap, cred) | |
225 | struct nameidata *ndp; | |
226 | struct ucred *cred; | |
227 | struct vattr *vap; | |
3e78e260 | 228 | { |
f09fe6d3 | 229 | register struct vnode *vp; |
7188ac27 KM |
230 | struct inode *ip; |
231 | int error; | |
3e78e260 | 232 | |
7188ac27 KM |
233 | if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip)) |
234 | return (error); | |
d1c43d7f KM |
235 | ip->i_flag |= IACC|IUPD|ICHG; |
236 | if (vap->va_rdev != VNOVAL) { | |
7188ac27 KM |
237 | /* |
238 | * Want to be able to use this to make badblock | |
239 | * inodes, so don't truncate the dev number. | |
240 | */ | |
b373e060 | 241 | ip->i_rdev = vap->va_rdev; |
7188ac27 | 242 | } |
7188ac27 KM |
243 | /* |
244 | * Remove inode so that it will be reloaded by iget and | |
245 | * checked to see if it is an alias of an existing entry | |
246 | * in the inode cache. | |
247 | */ | |
d1c43d7f KM |
248 | vp = ITOV(ip); |
249 | vput(vp); | |
f09fe6d3 KM |
250 | vp->v_type = VNON; |
251 | vgone(vp); | |
7188ac27 | 252 | return (0); |
3e78e260 BJ |
253 | } |
254 | ||
255 | /* | |
7188ac27 KM |
256 | * Open called. |
257 | * | |
258 | * Nothing to do. | |
3e78e260 | 259 | */ |
7188ac27 KM |
260 | /* ARGSUSED */ |
261 | ufs_open(vp, mode, cred) | |
262 | struct vnode *vp; | |
263 | int mode; | |
264 | struct ucred *cred; | |
3e78e260 | 265 | { |
3e78e260 | 266 | |
7188ac27 | 267 | return (0); |
3e78e260 BJ |
268 | } |
269 | ||
270 | /* | |
7188ac27 KM |
271 | * Close called |
272 | * | |
273 | * Update the times on the inode. | |
3e78e260 | 274 | */ |
7188ac27 KM |
275 | /* ARGSUSED */ |
276 | ufs_close(vp, fflag, cred) | |
277 | struct vnode *vp; | |
278 | int fflag; | |
279 | struct ucred *cred; | |
3e78e260 | 280 | { |
7188ac27 | 281 | register struct inode *ip = VTOI(vp); |
3e78e260 | 282 | |
de67eefc | 283 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
7188ac27 KM |
284 | ITIMES(ip, &time, &time); |
285 | return (0); | |
3e78e260 BJ |
286 | } |
287 | ||
4b61628b KM |
288 | /* |
289 | * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. | |
290 | * The mode is shifted to select the owner/group/other fields. The | |
291 | * super user is granted all permissions. | |
292 | */ | |
7188ac27 KM |
293 | ufs_access(vp, mode, cred) |
294 | struct vnode *vp; | |
4b61628b | 295 | register int mode; |
7188ac27 | 296 | struct ucred *cred; |
3e78e260 | 297 | { |
4b61628b KM |
298 | register struct inode *ip = VTOI(vp); |
299 | register gid_t *gp; | |
300 | int i, error; | |
3e78e260 | 301 | |
4b61628b KM |
302 | #ifdef DIAGNOSTIC |
303 | if (!VOP_ISLOCKED(vp)) { | |
304 | vprint("ufs_access: not locked", vp); | |
305 | panic("ufs_access: not locked"); | |
306 | } | |
307 | #endif | |
308 | #ifdef QUOTA | |
309 | if (mode & VWRITE) { | |
310 | switch (vp->v_type) { | |
311 | case VREG: case VDIR: case VLNK: | |
312 | if (error = getinoquota(ip)) | |
313 | return (error); | |
314 | } | |
315 | } | |
316 | #endif /* QUOTA */ | |
317 | /* | |
318 | * If you're the super-user, you always get access. | |
319 | */ | |
320 | if (cred->cr_uid == 0) | |
321 | return (0); | |
322 | /* | |
323 | * Access check is based on only one of owner, group, public. | |
324 | * If not owner, then check group. If not a member of the | |
325 | * group, then check public access. | |
326 | */ | |
327 | if (cred->cr_uid != ip->i_uid) { | |
328 | mode >>= 3; | |
329 | gp = cred->cr_groups; | |
330 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
331 | if (ip->i_gid == *gp) | |
332 | goto found; | |
333 | mode >>= 3; | |
334 | found: | |
335 | ; | |
336 | } | |
337 | if ((ip->i_mode & mode) != 0) | |
338 | return (0); | |
339 | return (EACCES); | |
3e78e260 BJ |
340 | } |
341 | ||
7188ac27 KM |
342 | /* ARGSUSED */ |
343 | ufs_getattr(vp, vap, cred) | |
344 | struct vnode *vp; | |
345 | register struct vattr *vap; | |
346 | struct ucred *cred; | |
3e78e260 | 347 | { |
7188ac27 | 348 | register struct inode *ip = VTOI(vp); |
3e78e260 | 349 | |
7188ac27 | 350 | ITIMES(ip, &time, &time); |
3e78e260 | 351 | /* |
7188ac27 | 352 | * Copy from inode table |
3e78e260 | 353 | */ |
7188ac27 KM |
354 | vap->va_fsid = ip->i_dev; |
355 | vap->va_fileid = ip->i_number; | |
356 | vap->va_mode = ip->i_mode & ~IFMT; | |
357 | vap->va_nlink = ip->i_nlink; | |
358 | vap->va_uid = ip->i_uid; | |
359 | vap->va_gid = ip->i_gid; | |
360 | vap->va_rdev = (dev_t)ip->i_rdev; | |
4b61628b KM |
361 | #ifdef tahoe |
362 | vap->va_size = ip->i_size; | |
363 | vap->va_size_rsv = 0; | |
364 | #else | |
8fae943a | 365 | vap->va_qsize = ip->i_din.di_qsize; |
4b61628b | 366 | #endif |
7188ac27 | 367 | vap->va_atime.tv_sec = ip->i_atime; |
6ef53d70 | 368 | vap->va_atime.tv_usec = 0; |
7188ac27 | 369 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 370 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 371 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 372 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
373 | vap->va_flags = ip->i_flags; |
374 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
375 | /* this doesn't belong here */ |
376 | if (vp->v_type == VBLK) | |
377 | vap->va_blocksize = BLKDEV_IOSIZE; | |
378 | else if (vp->v_type == VCHR) | |
379 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 380 | else |
7188ac27 | 381 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 382 | vap->va_bytes = dbtob(ip->i_blocks); |
8fae943a | 383 | vap->va_bytes_rsv = 0; |
7188ac27 KM |
384 | vap->va_type = vp->v_type; |
385 | return (0); | |
3e78e260 BJ |
386 | } |
387 | ||
388 | /* | |
7188ac27 | 389 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 390 | */ |
7188ac27 KM |
391 | ufs_setattr(vp, vap, cred) |
392 | register struct vnode *vp; | |
393 | register struct vattr *vap; | |
394 | register struct ucred *cred; | |
3e78e260 | 395 | { |
7188ac27 KM |
396 | register struct inode *ip = VTOI(vp); |
397 | int error = 0; | |
b4d1aee9 | 398 | |
7188ac27 KM |
399 | /* |
400 | * Check for unsetable attributes. | |
401 | */ | |
402 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
403 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
404 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 405 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 406 | return (EINVAL); |
b4d1aee9 | 407 | } |
7188ac27 KM |
408 | /* |
409 | * Go through the fields and update iff not VNOVAL. | |
410 | */ | |
411 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
412 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
413 | return (error); | |
414 | if (vap->va_size != VNOVAL) { | |
415 | if (vp->v_type == VDIR) | |
416 | return (EISDIR); | |
e16fa59e | 417 | if (error = itrunc(ip, vap->va_size, 0)) /* XXX IO_SYNC? */ |
7188ac27 | 418 | return (error); |
3e78e260 | 419 | } |
7188ac27 | 420 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
421 | if (cred->cr_uid != ip->i_uid && |
422 | (error = suser(cred, &u.u_acflag))) | |
423 | return (error); | |
7188ac27 KM |
424 | if (vap->va_atime.tv_sec != VNOVAL) |
425 | ip->i_flag |= IACC; | |
426 | if (vap->va_mtime.tv_sec != VNOVAL) | |
427 | ip->i_flag |= IUPD; | |
428 | ip->i_flag |= ICHG; | |
429 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
430 | return (error); | |
5485e062 | 431 | } |
7188ac27 KM |
432 | if (vap->va_mode != (u_short)VNOVAL) |
433 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
434 | if (vap->va_flags != VNOVAL) { |
435 | if (cred->cr_uid != ip->i_uid && | |
436 | (error = suser(cred, &u.u_acflag))) | |
437 | return (error); | |
438 | if (cred->cr_uid == 0) { | |
439 | ip->i_flags = vap->va_flags; | |
440 | } else { | |
441 | ip->i_flags &= 0xffff0000; | |
442 | ip->i_flags |= (vap->va_flags & 0xffff); | |
443 | } | |
444 | ip->i_flag |= ICHG; | |
445 | } | |
7188ac27 | 446 | return (error); |
528f664c SL |
447 | } |
448 | ||
4f083fd7 SL |
449 | /* |
450 | * Change the mode on a file. | |
451 | * Inode must be locked before calling. | |
452 | */ | |
7188ac27 KM |
453 | chmod1(vp, mode, cred) |
454 | register struct vnode *vp; | |
528f664c | 455 | register int mode; |
7188ac27 | 456 | struct ucred *cred; |
528f664c | 457 | { |
7188ac27 | 458 | register struct inode *ip = VTOI(vp); |
de412887 | 459 | int error; |
197da11b | 460 | |
de412887 KM |
461 | if (cred->cr_uid != ip->i_uid && |
462 | (error = suser(cred, &u.u_acflag))) | |
463 | return (error); | |
3e78e260 | 464 | ip->i_mode &= ~07777; |
7188ac27 KM |
465 | if (cred->cr_uid) { |
466 | if (vp->v_type != VDIR) | |
47af7174 | 467 | mode &= ~ISVTX; |
7188ac27 | 468 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 469 | mode &= ~ISGID; |
f94ceb3b | 470 | } |
7188ac27 | 471 | ip->i_mode |= mode & 07777; |
3e78e260 | 472 | ip->i_flag |= ICHG; |
7188ac27 KM |
473 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
474 | xrele(vp); | |
47af7174 | 475 | return (0); |
5485e062 BJ |
476 | } |
477 | ||
528f664c SL |
478 | /* |
479 | * Perform chown operation on inode ip; | |
480 | * inode must be locked prior to call. | |
481 | */ | |
7188ac27 KM |
482 | chown1(vp, uid, gid, cred) |
483 | register struct vnode *vp; | |
484 | uid_t uid; | |
485 | gid_t gid; | |
486 | struct ucred *cred; | |
528f664c | 487 | { |
7188ac27 | 488 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
489 | uid_t ouid; |
490 | gid_t ogid; | |
491 | int error = 0; | |
528f664c | 492 | #ifdef QUOTA |
4b61628b KM |
493 | register int i; |
494 | long change; | |
bb1b75f4 | 495 | #endif |
528f664c | 496 | |
7188ac27 | 497 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 498 | uid = ip->i_uid; |
7188ac27 | 499 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 500 | gid = ip->i_gid; |
18b0bce6 KB |
501 | /* |
502 | * If we don't own the file, are trying to change the owner | |
503 | * of the file, or are not a member of the target group, | |
504 | * the caller must be superuser or the call fails. | |
505 | */ | |
7188ac27 KM |
506 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
507 | !groupmember((gid_t)gid, cred)) && | |
508 | (error = suser(cred, &u.u_acflag))) | |
509 | return (error); | |
4b61628b KM |
510 | ouid = ip->i_uid; |
511 | ogid = ip->i_gid; | |
bb1b75f4 | 512 | #ifdef QUOTA |
4b61628b KM |
513 | if (error = getinoquota(ip)) |
514 | return (error); | |
515 | if (ouid == uid) { | |
516 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
517 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
518 | } | |
519 | if (ogid == gid) { | |
520 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
521 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
522 | } | |
523 | change = ip->i_blocks; | |
524 | (void) chkdq(ip, -change, cred, CHOWN); | |
525 | (void) chkiq(ip, -1, cred, CHOWN); | |
526 | for (i = 0; i < MAXQUOTAS; i++) { | |
527 | dqrele(vp, ip->i_dquot[i]); | |
528 | ip->i_dquot[i] = NODQUOT; | |
529 | } | |
f94ceb3b | 530 | #endif |
bb1b75f4 SL |
531 | ip->i_uid = uid; |
532 | ip->i_gid = gid; | |
528f664c | 533 | #ifdef QUOTA |
4b61628b KM |
534 | if ((error = getinoquota(ip)) == 0) { |
535 | if (ouid == uid) { | |
536 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
537 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
538 | } | |
539 | if (ogid == gid) { | |
540 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
541 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
542 | } | |
543 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
544 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
722a9b31 | 545 | goto good; |
4b61628b KM |
546 | else |
547 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
548 | } | |
549 | for (i = 0; i < MAXQUOTAS; i++) { | |
550 | dqrele(vp, ip->i_dquot[i]); | |
551 | ip->i_dquot[i] = NODQUOT; | |
552 | } | |
553 | } | |
554 | ip->i_uid = ouid; | |
555 | ip->i_gid = ogid; | |
556 | if (getinoquota(ip) == 0) { | |
557 | if (ouid == uid) { | |
558 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
559 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
560 | } | |
561 | if (ogid == gid) { | |
562 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
563 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
564 | } | |
722a9b31 KM |
565 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
566 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 567 | (void) getinoquota(ip); |
4b61628b | 568 | } |
6cb69bbe | 569 | return (error); |
722a9b31 | 570 | good: |
6cb69bbe KM |
571 | if (getinoquota(ip)) |
572 | panic("chown: lost quota"); | |
573 | #endif /* QUOTA */ | |
4b61628b KM |
574 | if (ouid != uid || ogid != gid) |
575 | ip->i_flag |= ICHG; | |
576 | if (ouid != uid && cred->cr_uid != 0) | |
577 | ip->i_mode &= ~ISUID; | |
578 | if (ogid != gid && cred->cr_uid != 0) | |
579 | ip->i_mode &= ~ISGID; | |
580 | return (0); | |
d67a03eb BJ |
581 | } |
582 | ||
b373e060 KM |
583 | /* |
584 | * Vnode op for reading. | |
585 | */ | |
586 | /* ARGSUSED */ | |
587 | ufs_read(vp, uio, ioflag, cred) | |
588 | struct vnode *vp; | |
589 | register struct uio *uio; | |
590 | int ioflag; | |
591 | struct ucred *cred; | |
592 | { | |
593 | register struct inode *ip = VTOI(vp); | |
594 | register struct fs *fs; | |
595 | struct buf *bp; | |
596 | daddr_t lbn, bn, rablock; | |
20aa076b | 597 | int size, diff, error = 0; |
b373e060 KM |
598 | long n, on, type; |
599 | ||
600 | if (uio->uio_rw != UIO_READ) | |
601 | panic("ufs_read mode"); | |
602 | type = ip->i_mode & IFMT; | |
603 | if (type != IFDIR && type != IFREG && type != IFLNK) | |
604 | panic("ufs_read type"); | |
605 | if (uio->uio_resid == 0) | |
606 | return (0); | |
607 | if (uio->uio_offset < 0) | |
608 | return (EINVAL); | |
609 | ip->i_flag |= IACC; | |
610 | fs = ip->i_fs; | |
611 | do { | |
612 | lbn = lblkno(fs, uio->uio_offset); | |
613 | on = blkoff(fs, uio->uio_offset); | |
614 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
615 | diff = ip->i_size - uio->uio_offset; | |
616 | if (diff <= 0) | |
617 | return (0); | |
618 | if (diff < n) | |
619 | n = diff; | |
b373e060 | 620 | size = blksize(fs, ip, lbn); |
e16fa59e | 621 | rablock = lbn + 1; |
20aa076b KM |
622 | if (vp->v_lastr + 1 == lbn && |
623 | lblktosize(fs, rablock) < ip->i_size) | |
624 | error = breada(ITOV(ip), lbn, size, rablock, | |
625 | blksize(fs, ip, rablock), NOCRED, &bp); | |
b373e060 | 626 | else |
e16fa59e | 627 | error = bread(ITOV(ip), lbn, size, NOCRED, &bp); |
de67eefc | 628 | vp->v_lastr = lbn; |
b373e060 KM |
629 | n = MIN(n, size - bp->b_resid); |
630 | if (error) { | |
631 | brelse(bp); | |
632 | return (error); | |
633 | } | |
634 | error = uiomove(bp->b_un.b_addr + on, (int)n, uio); | |
635 | if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size) | |
636 | bp->b_flags |= B_AGE; | |
637 | brelse(bp); | |
638 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
639 | return (error); | |
640 | } | |
641 | ||
642 | /* | |
643 | * Vnode op for writing. | |
644 | */ | |
645 | ufs_write(vp, uio, ioflag, cred) | |
646 | register struct vnode *vp; | |
647 | struct uio *uio; | |
648 | int ioflag; | |
649 | struct ucred *cred; | |
650 | { | |
651 | register struct inode *ip = VTOI(vp); | |
652 | register struct fs *fs; | |
653 | struct buf *bp; | |
654 | daddr_t lbn, bn; | |
655 | u_long osize; | |
656 | int i, n, on, flags; | |
657 | int count, size, resid, error = 0; | |
658 | ||
659 | if (uio->uio_rw != UIO_WRITE) | |
660 | panic("ufs_write mode"); | |
661 | switch (vp->v_type) { | |
662 | case VREG: | |
663 | if (ioflag & IO_APPEND) | |
664 | uio->uio_offset = ip->i_size; | |
665 | /* fall through */ | |
666 | case VLNK: | |
667 | break; | |
668 | ||
669 | case VDIR: | |
670 | if ((ioflag & IO_SYNC) == 0) | |
671 | panic("ufs_write nonsync dir write"); | |
672 | break; | |
673 | ||
674 | default: | |
675 | panic("ufs_write type"); | |
676 | } | |
677 | if (uio->uio_offset < 0) | |
678 | return (EINVAL); | |
679 | if (uio->uio_resid == 0) | |
680 | return (0); | |
681 | /* | |
682 | * Maybe this should be above the vnode op call, but so long as | |
683 | * file servers have no limits, i don't think it matters | |
684 | */ | |
685 | if (vp->v_type == VREG && | |
686 | uio->uio_offset + uio->uio_resid > | |
687 | u.u_rlimit[RLIMIT_FSIZE].rlim_cur) { | |
688 | psignal(u.u_procp, SIGXFSZ); | |
689 | return (EFBIG); | |
690 | } | |
691 | resid = uio->uio_resid; | |
692 | osize = ip->i_size; | |
693 | fs = ip->i_fs; | |
e16fa59e KM |
694 | flags = 0; |
695 | if (ioflag & IO_SYNC) | |
696 | flags = B_SYNC; | |
b373e060 KM |
697 | do { |
698 | lbn = lblkno(fs, uio->uio_offset); | |
699 | on = blkoff(fs, uio->uio_offset); | |
700 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
701 | if (n < fs->fs_bsize) | |
e16fa59e | 702 | flags |= B_CLRBUF; |
b373e060 | 703 | else |
e16fa59e KM |
704 | flags &= ~B_CLRBUF; |
705 | if (error = balloc(ip, lbn, (int)(on + n), &bp, flags)) | |
b373e060 | 706 | break; |
e16fa59e | 707 | bn = bp->b_blkno; |
b373e060 KM |
708 | if (uio->uio_offset + n > ip->i_size) |
709 | ip->i_size = uio->uio_offset + n; | |
710 | size = blksize(fs, ip, lbn); | |
711 | count = howmany(size, CLBYTES); | |
712 | for (i = 0; i < count; i++) | |
713 | munhash(ip->i_devvp, bn + i * CLBYTES / DEV_BSIZE); | |
b373e060 | 714 | n = MIN(n, size - bp->b_resid); |
b373e060 KM |
715 | error = uiomove(bp->b_un.b_addr + on, n, uio); |
716 | if (ioflag & IO_SYNC) | |
717 | (void) bwrite(bp); | |
718 | else if (n + on == fs->fs_bsize) { | |
719 | bp->b_flags |= B_AGE; | |
720 | bawrite(bp); | |
721 | } else | |
722 | bdwrite(bp); | |
723 | ip->i_flag |= IUPD|ICHG; | |
724 | if (cred->cr_uid != 0) | |
725 | ip->i_mode &= ~(ISUID|ISGID); | |
726 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
727 | if (error && (ioflag & IO_UNIT)) { | |
e16fa59e | 728 | (void) itrunc(ip, osize, ioflag & IO_SYNC); |
b373e060 KM |
729 | uio->uio_offset -= resid - uio->uio_resid; |
730 | uio->uio_resid = resid; | |
731 | } | |
1c05ecaf KM |
732 | if (!error && (ioflag & IO_SYNC)) |
733 | error = iupdat(ip, &time, &time, 1); | |
b373e060 KM |
734 | return (error); |
735 | } | |
736 | ||
7188ac27 KM |
737 | /* ARGSUSED */ |
738 | ufs_ioctl(vp, com, data, fflag, cred) | |
739 | struct vnode *vp; | |
740 | int com; | |
741 | caddr_t data; | |
742 | int fflag; | |
743 | struct ucred *cred; | |
bb1b75f4 | 744 | { |
bb1b75f4 | 745 | |
7188ac27 KM |
746 | return (ENOTTY); |
747 | } | |
748 | ||
749 | /* ARGSUSED */ | |
d1c43d7f | 750 | ufs_select(vp, which, fflags, cred) |
7188ac27 | 751 | struct vnode *vp; |
d1c43d7f | 752 | int which, fflags; |
7188ac27 KM |
753 | struct ucred *cred; |
754 | { | |
755 | ||
7188ac27 | 756 | return (1); /* XXX */ |
bb1b75f4 | 757 | } |
d67a03eb | 758 | |
4f083fd7 | 759 | /* |
7188ac27 KM |
760 | * Mmap a file |
761 | * | |
762 | * NB Currently unsupported. | |
4f083fd7 | 763 | */ |
7188ac27 KM |
764 | /* ARGSUSED */ |
765 | ufs_mmap(vp, fflags, cred) | |
766 | struct vnode *vp; | |
767 | int fflags; | |
768 | struct ucred *cred; | |
d67a03eb | 769 | { |
d67a03eb | 770 | |
7188ac27 | 771 | return (EINVAL); |
d67a03eb | 772 | } |
64d3a787 | 773 | |
4f083fd7 | 774 | /* |
7188ac27 | 775 | * Synch an open file. |
4f083fd7 | 776 | */ |
7188ac27 | 777 | /* ARGSUSED */ |
86cdabf6 | 778 | ufs_fsync(vp, fflags, cred, waitfor) |
7188ac27 KM |
779 | struct vnode *vp; |
780 | int fflags; | |
781 | struct ucred *cred; | |
86cdabf6 | 782 | int waitfor; |
528f664c | 783 | { |
86cdabf6 | 784 | struct inode *ip = VTOI(vp); |
7188ac27 | 785 | |
7188ac27 KM |
786 | if (fflags&FWRITE) |
787 | ip->i_flag |= ICHG; | |
e16fa59e KM |
788 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); |
789 | return (iupdat(ip, &time, &time, waitfor == MNT_WAIT)); | |
528f664c SL |
790 | } |
791 | ||
4f083fd7 | 792 | /* |
7188ac27 KM |
793 | * Seek on a file |
794 | * | |
795 | * Nothing to do, so just return. | |
4f083fd7 | 796 | */ |
7188ac27 KM |
797 | /* ARGSUSED */ |
798 | ufs_seek(vp, oldoff, newoff, cred) | |
799 | struct vnode *vp; | |
800 | off_t oldoff, newoff; | |
801 | struct ucred *cred; | |
528f664c | 802 | { |
7188ac27 KM |
803 | |
804 | return (0); | |
805 | } | |
806 | ||
807 | /* | |
808 | * ufs remove | |
809 | * Hard to avoid races here, especially | |
810 | * in unlinking directories. | |
811 | */ | |
812 | ufs_remove(ndp) | |
813 | struct nameidata *ndp; | |
814 | { | |
815 | register struct inode *ip, *dp; | |
816 | int error; | |
817 | ||
818 | ip = VTOI(ndp->ni_vp); | |
819 | dp = VTOI(ndp->ni_dvp); | |
820 | error = dirremove(ndp); | |
821 | if (!error) { | |
822 | ip->i_nlink--; | |
823 | ip->i_flag |= ICHG; | |
528f664c | 824 | } |
7188ac27 KM |
825 | if (dp == ip) |
826 | vrele(ITOV(ip)); | |
827 | else | |
828 | iput(ip); | |
829 | iput(dp); | |
830 | return (error); | |
4f083fd7 SL |
831 | } |
832 | ||
833 | /* | |
7188ac27 | 834 | * link vnode call |
4f083fd7 | 835 | */ |
7188ac27 KM |
836 | ufs_link(vp, ndp) |
837 | register struct vnode *vp; | |
838 | register struct nameidata *ndp; | |
4f083fd7 | 839 | { |
7188ac27 KM |
840 | register struct inode *ip = VTOI(vp); |
841 | int error; | |
4f083fd7 | 842 | |
7188ac27 KM |
843 | if (ndp->ni_dvp != vp) |
844 | ILOCK(ip); | |
845 | if (ip->i_nlink == LINK_MAX - 1) { | |
846 | error = EMLINK; | |
847 | goto out; | |
848 | } | |
849 | ip->i_nlink++; | |
850 | ip->i_flag |= ICHG; | |
851 | error = iupdat(ip, &time, &time, 1); | |
852 | if (!error) | |
853 | error = direnter(ip, ndp); | |
854 | out: | |
855 | if (ndp->ni_dvp != vp) | |
856 | IUNLOCK(ip); | |
857 | if (error) { | |
858 | ip->i_nlink--; | |
82252d2b | 859 | ip->i_flag |= ICHG; |
7188ac27 KM |
860 | } |
861 | return (error); | |
528f664c SL |
862 | } |
863 | ||
4f083fd7 SL |
864 | /* |
865 | * Rename system call. | |
866 | * rename("foo", "bar"); | |
867 | * is essentially | |
868 | * unlink("bar"); | |
869 | * link("foo", "bar"); | |
870 | * unlink("foo"); | |
871 | * but ``atomically''. Can't do full commit without saving state in the | |
872 | * inode on disk which isn't feasible at this time. Best we can do is | |
873 | * always guarantee the target exists. | |
874 | * | |
875 | * Basic algorithm is: | |
876 | * | |
877 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 878 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
879 | * from underneath us while we work (it may be truncated by |
880 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
881 | * 2) Link source to destination. If destination already exists, |
882 | * delete it first. | |
68f21562 KM |
883 | * 3) Unlink source reference to inode if still around. If a |
884 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
885 | * is different from the source, patch the ".." entry in the |
886 | * directory. | |
4f083fd7 | 887 | */ |
7188ac27 KM |
888 | ufs_rename(fndp, tndp) |
889 | register struct nameidata *fndp, *tndp; | |
528f664c | 890 | { |
4f083fd7 | 891 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
892 | struct dirtemplate dirbuf; |
893 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 894 | int error = 0; |
4f083fd7 | 895 | |
7188ac27 KM |
896 | dp = VTOI(fndp->ni_dvp); |
897 | ip = VTOI(fndp->ni_vp); | |
898 | ILOCK(ip); | |
4f083fd7 | 899 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 900 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 901 | |
4f083fd7 | 902 | /* |
046f18d1 | 903 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 904 | */ |
7188ac27 KM |
905 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
906 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
66955caf KM |
907 | VOP_ABORTOP(tndp); |
908 | vput(tndp->ni_dvp); | |
909 | if (tndp->ni_vp) | |
910 | vput(tndp->ni_vp); | |
911 | VOP_ABORTOP(fndp); | |
912 | vrele(fndp->ni_dvp); | |
913 | vput(fndp->ni_vp); | |
7188ac27 | 914 | return (EINVAL); |
4f083fd7 | 915 | } |
68f21562 | 916 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
917 | oldparent = dp->i_number; |
918 | doingdirectory++; | |
919 | } | |
7188ac27 | 920 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
921 | |
922 | /* | |
923 | * 1) Bump link count while we're moving stuff | |
924 | * around. If we crash somewhere before | |
925 | * completing our work, the link count | |
926 | * may be wrong, but correctable. | |
927 | */ | |
928 | ip->i_nlink++; | |
929 | ip->i_flag |= ICHG; | |
7188ac27 | 930 | error = iupdat(ip, &time, &time, 1); |
a388503d | 931 | IUNLOCK(ip); |
4f083fd7 SL |
932 | |
933 | /* | |
934 | * When the target exists, both the directory | |
7188ac27 | 935 | * and target vnodes are returned locked. |
4f083fd7 | 936 | */ |
7188ac27 KM |
937 | dp = VTOI(tndp->ni_dvp); |
938 | xp = NULL; | |
939 | if (tndp->ni_vp) | |
940 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
941 | /* |
942 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
943 | * parent) then the source directory must not be in the |
944 | * directory heirarchy above the target, as this would | |
945 | * orphan everything below the source directory. Also | |
946 | * the user must have write permission in the source so | |
947 | * as to be able to change "..". We must repeat the call | |
948 | * to namei, as the parent directory is unlocked by the | |
949 | * call to checkpath(). | |
046f18d1 | 950 | */ |
68f21562 KM |
951 | if (oldparent != dp->i_number) |
952 | newparent = dp->i_number; | |
953 | if (doingdirectory && newparent) { | |
48c3b6e8 KM |
954 | VOP_LOCK(fndp->ni_vp); |
955 | error = ufs_access(fndp->ni_vp, VWRITE, tndp->ni_cred); | |
956 | VOP_UNLOCK(fndp->ni_vp); | |
957 | if (error) | |
81552f0f | 958 | goto bad; |
7188ac27 | 959 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 960 | do { |
7188ac27 | 961 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 962 | if (xp != NULL) |
79cf21e2 | 963 | iput(xp); |
7188ac27 | 964 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 965 | goto out; |
7188ac27 | 966 | if (error = namei(tndp)) |
81552f0f | 967 | goto out; |
7188ac27 KM |
968 | xp = NULL; |
969 | if (tndp->ni_vp) | |
970 | xp = VTOI(tndp->ni_vp); | |
971 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 972 | } |
4f083fd7 SL |
973 | /* |
974 | * 2) If target doesn't exist, link the target | |
975 | * to the source and unlink the source. | |
976 | * Otherwise, rewrite the target directory | |
977 | * entry to reference the source inode and | |
978 | * expunge the original entry's existence. | |
979 | */ | |
4f083fd7 | 980 | if (xp == NULL) { |
7188ac27 KM |
981 | if (dp->i_dev != ip->i_dev) |
982 | panic("rename: EXDEV"); | |
4f083fd7 | 983 | /* |
68f21562 KM |
984 | * Account for ".." in new directory. |
985 | * When source and destination have the same | |
986 | * parent we don't fool with the link count. | |
4f083fd7 | 987 | */ |
68f21562 | 988 | if (doingdirectory && newparent) { |
4f083fd7 SL |
989 | dp->i_nlink++; |
990 | dp->i_flag |= ICHG; | |
7188ac27 | 991 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 992 | } |
7188ac27 | 993 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
994 | goto out; |
995 | } else { | |
7188ac27 KM |
996 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
997 | panic("rename: EXDEV"); | |
e69c3c9c SL |
998 | /* |
999 | * Short circuit rename(foo, foo). | |
1000 | */ | |
1001 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1002 | panic("rename: same file"); |
80cee150 JB |
1003 | /* |
1004 | * If the parent directory is "sticky", then the user must | |
1005 | * own the parent directory, or the destination of the rename, | |
1006 | * otherwise the destination may not be changed (except by | |
1007 | * root). This implements append-only directories. | |
1008 | */ | |
7188ac27 KM |
1009 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
1010 | tndp->ni_cred->cr_uid != dp->i_uid && | |
1011 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
1012 | error = EPERM; |
1013 | goto bad; | |
1014 | } | |
4f083fd7 | 1015 | /* |
a5390dce SL |
1016 | * Target must be empty if a directory |
1017 | * and have no links to it. | |
4f083fd7 SL |
1018 | * Also, insure source and target are |
1019 | * compatible (both directories, or both | |
1020 | * not directories). | |
1021 | */ | |
1022 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
1023 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
1024 | xp->i_nlink > 2) { | |
a5390dce | 1025 | error = ENOTEMPTY; |
4f083fd7 SL |
1026 | goto bad; |
1027 | } | |
1028 | if (!doingdirectory) { | |
a5390dce | 1029 | error = ENOTDIR; |
4f083fd7 SL |
1030 | goto bad; |
1031 | } | |
7188ac27 | 1032 | cache_purge(ITOV(dp)); |
4f083fd7 | 1033 | } else if (doingdirectory) { |
a5390dce | 1034 | error = EISDIR; |
4f083fd7 SL |
1035 | goto bad; |
1036 | } | |
7188ac27 KM |
1037 | if (error = dirrewrite(dp, ip, tndp)) |
1038 | goto bad; | |
a62786b9 KM |
1039 | /* |
1040 | * If the target directory is in the same | |
1041 | * directory as the source directory, | |
1042 | * decrement the link count on the parent | |
1043 | * of the target directory. | |
1044 | */ | |
1045 | if (doingdirectory && !newparent) { | |
1046 | dp->i_nlink--; | |
1047 | dp->i_flag |= ICHG; | |
1048 | } | |
7188ac27 | 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 | } |