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 | * | |
0f93ba7b | 17 | * @(#)lfs_vnops.c 7.35 (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" |
7188ac27 KM |
34 | #include "../ufs/inode.h" |
35 | #include "../ufs/fs.h" | |
36 | #include "../ufs/quota.h" | |
3e78e260 | 37 | |
4f083fd7 | 38 | /* |
7188ac27 | 39 | * Global vfs data structures for ufs |
4f083fd7 | 40 | */ |
3e78e260 | 41 | |
7188ac27 KM |
42 | int ufs_lookup(), |
43 | ufs_create(), | |
44 | ufs_mknod(), | |
45 | ufs_open(), | |
46 | ufs_close(), | |
47 | ufs_access(), | |
48 | ufs_getattr(), | |
49 | ufs_setattr(), | |
50 | ufs_read(), | |
51 | ufs_write(), | |
52 | ufs_ioctl(), | |
53 | ufs_select(), | |
54 | ufs_mmap(), | |
55 | ufs_fsync(), | |
56 | ufs_seek(), | |
57 | ufs_remove(), | |
58 | ufs_link(), | |
59 | ufs_rename(), | |
60 | ufs_mkdir(), | |
61 | ufs_rmdir(), | |
62 | ufs_symlink(), | |
63 | ufs_readdir(), | |
64 | ufs_readlink(), | |
65 | ufs_abortop(), | |
66 | ufs_inactive(), | |
e8a3816c | 67 | ufs_reclaim(), |
7188ac27 KM |
68 | ufs_lock(), |
69 | ufs_unlock(), | |
70 | ufs_bmap(), | |
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 | ||
7188ac27 KM |
298 | ufs_access(vp, mode, cred) |
299 | struct vnode *vp; | |
300 | int mode; | |
301 | struct ucred *cred; | |
3e78e260 | 302 | { |
3e78e260 | 303 | |
7188ac27 | 304 | return (iaccess(VTOI(vp), mode, cred)); |
3e78e260 BJ |
305 | } |
306 | ||
7188ac27 KM |
307 | /* ARGSUSED */ |
308 | ufs_getattr(vp, vap, cred) | |
309 | struct vnode *vp; | |
310 | register struct vattr *vap; | |
311 | struct ucred *cred; | |
3e78e260 | 312 | { |
7188ac27 | 313 | register struct inode *ip = VTOI(vp); |
3e78e260 | 314 | |
7188ac27 | 315 | ITIMES(ip, &time, &time); |
3e78e260 | 316 | /* |
7188ac27 | 317 | * Copy from inode table |
3e78e260 | 318 | */ |
7188ac27 KM |
319 | vap->va_fsid = ip->i_dev; |
320 | vap->va_fileid = ip->i_number; | |
321 | vap->va_mode = ip->i_mode & ~IFMT; | |
322 | vap->va_nlink = ip->i_nlink; | |
323 | vap->va_uid = ip->i_uid; | |
324 | vap->va_gid = ip->i_gid; | |
325 | vap->va_rdev = (dev_t)ip->i_rdev; | |
8fae943a | 326 | vap->va_qsize = ip->i_din.di_qsize; |
7188ac27 | 327 | vap->va_atime.tv_sec = ip->i_atime; |
6ef53d70 | 328 | vap->va_atime.tv_usec = 0; |
7188ac27 | 329 | vap->va_mtime.tv_sec = ip->i_mtime; |
6ef53d70 | 330 | vap->va_mtime.tv_usec = 0; |
7188ac27 | 331 | vap->va_ctime.tv_sec = ip->i_ctime; |
6ef53d70 | 332 | vap->va_ctime.tv_usec = 0; |
d07fc92a KM |
333 | vap->va_flags = ip->i_flags; |
334 | vap->va_gen = ip->i_gen; | |
7188ac27 KM |
335 | /* this doesn't belong here */ |
336 | if (vp->v_type == VBLK) | |
337 | vap->va_blocksize = BLKDEV_IOSIZE; | |
338 | else if (vp->v_type == VCHR) | |
339 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 340 | else |
7188ac27 | 341 | vap->va_blocksize = ip->i_fs->fs_bsize; |
a61a68d6 | 342 | vap->va_bytes = dbtob(ip->i_blocks); |
8fae943a | 343 | vap->va_bytes_rsv = 0; |
7188ac27 KM |
344 | vap->va_type = vp->v_type; |
345 | return (0); | |
3e78e260 BJ |
346 | } |
347 | ||
348 | /* | |
7188ac27 | 349 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 350 | */ |
7188ac27 KM |
351 | ufs_setattr(vp, vap, cred) |
352 | register struct vnode *vp; | |
353 | register struct vattr *vap; | |
354 | register struct ucred *cred; | |
3e78e260 | 355 | { |
7188ac27 KM |
356 | register struct inode *ip = VTOI(vp); |
357 | int error = 0; | |
b4d1aee9 | 358 | |
7188ac27 KM |
359 | /* |
360 | * Check for unsetable attributes. | |
361 | */ | |
362 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || | |
363 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
364 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
d07fc92a | 365 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { |
7188ac27 | 366 | return (EINVAL); |
b4d1aee9 | 367 | } |
7188ac27 KM |
368 | /* |
369 | * Go through the fields and update iff not VNOVAL. | |
370 | */ | |
371 | if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL) | |
372 | if (error = chown1(vp, vap->va_uid, vap->va_gid, cred)) | |
373 | return (error); | |
374 | if (vap->va_size != VNOVAL) { | |
375 | if (vp->v_type == VDIR) | |
376 | return (EISDIR); | |
e16fa59e | 377 | if (error = itrunc(ip, vap->va_size, 0)) /* XXX IO_SYNC? */ |
7188ac27 | 378 | return (error); |
3e78e260 | 379 | } |
7188ac27 | 380 | if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { |
de412887 KM |
381 | if (cred->cr_uid != ip->i_uid && |
382 | (error = suser(cred, &u.u_acflag))) | |
383 | return (error); | |
7188ac27 KM |
384 | if (vap->va_atime.tv_sec != VNOVAL) |
385 | ip->i_flag |= IACC; | |
386 | if (vap->va_mtime.tv_sec != VNOVAL) | |
387 | ip->i_flag |= IUPD; | |
388 | ip->i_flag |= ICHG; | |
389 | if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1)) | |
390 | return (error); | |
5485e062 | 391 | } |
7188ac27 KM |
392 | if (vap->va_mode != (u_short)VNOVAL) |
393 | error = chmod1(vp, (int)vap->va_mode, cred); | |
d07fc92a KM |
394 | if (vap->va_flags != VNOVAL) { |
395 | if (cred->cr_uid != ip->i_uid && | |
396 | (error = suser(cred, &u.u_acflag))) | |
397 | return (error); | |
398 | if (cred->cr_uid == 0) { | |
399 | ip->i_flags = vap->va_flags; | |
400 | } else { | |
401 | ip->i_flags &= 0xffff0000; | |
402 | ip->i_flags |= (vap->va_flags & 0xffff); | |
403 | } | |
404 | ip->i_flag |= ICHG; | |
405 | } | |
7188ac27 | 406 | return (error); |
528f664c SL |
407 | } |
408 | ||
4f083fd7 SL |
409 | /* |
410 | * Change the mode on a file. | |
411 | * Inode must be locked before calling. | |
412 | */ | |
7188ac27 KM |
413 | chmod1(vp, mode, cred) |
414 | register struct vnode *vp; | |
528f664c | 415 | register int mode; |
7188ac27 | 416 | struct ucred *cred; |
528f664c | 417 | { |
7188ac27 | 418 | register struct inode *ip = VTOI(vp); |
de412887 | 419 | int error; |
197da11b | 420 | |
de412887 KM |
421 | if (cred->cr_uid != ip->i_uid && |
422 | (error = suser(cred, &u.u_acflag))) | |
423 | return (error); | |
3e78e260 | 424 | ip->i_mode &= ~07777; |
7188ac27 KM |
425 | if (cred->cr_uid) { |
426 | if (vp->v_type != VDIR) | |
47af7174 | 427 | mode &= ~ISVTX; |
7188ac27 | 428 | if (!groupmember(ip->i_gid, cred)) |
bb1b75f4 | 429 | mode &= ~ISGID; |
f94ceb3b | 430 | } |
7188ac27 | 431 | ip->i_mode |= mode & 07777; |
3e78e260 | 432 | ip->i_flag |= ICHG; |
7188ac27 KM |
433 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
434 | xrele(vp); | |
47af7174 | 435 | return (0); |
5485e062 BJ |
436 | } |
437 | ||
528f664c SL |
438 | /* |
439 | * Perform chown operation on inode ip; | |
440 | * inode must be locked prior to call. | |
441 | */ | |
7188ac27 KM |
442 | chown1(vp, uid, gid, cred) |
443 | register struct vnode *vp; | |
444 | uid_t uid; | |
445 | gid_t gid; | |
446 | struct ucred *cred; | |
528f664c | 447 | { |
7188ac27 | 448 | register struct inode *ip = VTOI(vp); |
528f664c SL |
449 | #ifdef QUOTA |
450 | register long change; | |
bb1b75f4 | 451 | #endif |
7188ac27 | 452 | int error; |
528f664c | 453 | |
7188ac27 | 454 | if (uid == (u_short)VNOVAL) |
bb1b75f4 | 455 | uid = ip->i_uid; |
7188ac27 | 456 | if (gid == (u_short)VNOVAL) |
bb1b75f4 | 457 | gid = ip->i_gid; |
18b0bce6 KB |
458 | /* |
459 | * If we don't own the file, are trying to change the owner | |
460 | * of the file, or are not a member of the target group, | |
461 | * the caller must be superuser or the call fails. | |
462 | */ | |
7188ac27 KM |
463 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
464 | !groupmember((gid_t)gid, cred)) && | |
465 | (error = suser(cred, &u.u_acflag))) | |
466 | return (error); | |
bb1b75f4 | 467 | #ifdef QUOTA |
3809bf69 | 468 | if (ip->i_uid == uid) /* this just speeds things a little */ |
0a77f278 | 469 | change = 0; |
2e073567 SL |
470 | else |
471 | change = ip->i_blocks; | |
472 | (void) chkdq(ip, -change, 1); | |
473 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 474 | dqrele(ip->i_dquot); |
f94ceb3b | 475 | #endif |
b440c2b9 KM |
476 | if (ip->i_uid != uid && cred->cr_uid != 0) |
477 | ip->i_mode &= ~ISUID; | |
478 | if (ip->i_gid != gid && cred->cr_uid != 0) | |
479 | ip->i_mode &= ~ISGID; | |
bb1b75f4 SL |
480 | ip->i_uid = uid; |
481 | ip->i_gid = gid; | |
3e78e260 | 482 | ip->i_flag |= ICHG; |
528f664c | 483 | #ifdef QUOTA |
0a77f278 | 484 | ip->i_dquot = inoquota(ip); |
2e073567 | 485 | (void) chkdq(ip, change, 1); |
8011f5df | 486 | (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1); |
2e073567 SL |
487 | return (u.u_error); /* should == 0 ALWAYS !! */ |
488 | #else | |
bb1b75f4 | 489 | return (0); |
2e073567 | 490 | #endif |
d67a03eb BJ |
491 | } |
492 | ||
b373e060 KM |
493 | /* |
494 | * Vnode op for reading. | |
495 | */ | |
496 | /* ARGSUSED */ | |
497 | ufs_read(vp, uio, ioflag, cred) | |
498 | struct vnode *vp; | |
499 | register struct uio *uio; | |
500 | int ioflag; | |
501 | struct ucred *cred; | |
502 | { | |
503 | register struct inode *ip = VTOI(vp); | |
504 | register struct fs *fs; | |
505 | struct buf *bp; | |
506 | daddr_t lbn, bn, rablock; | |
20aa076b | 507 | int size, diff, error = 0; |
b373e060 KM |
508 | long n, on, type; |
509 | ||
510 | if (uio->uio_rw != UIO_READ) | |
511 | panic("ufs_read mode"); | |
512 | type = ip->i_mode & IFMT; | |
513 | if (type != IFDIR && type != IFREG && type != IFLNK) | |
514 | panic("ufs_read type"); | |
515 | if (uio->uio_resid == 0) | |
516 | return (0); | |
517 | if (uio->uio_offset < 0) | |
518 | return (EINVAL); | |
519 | ip->i_flag |= IACC; | |
520 | fs = ip->i_fs; | |
521 | do { | |
522 | lbn = lblkno(fs, uio->uio_offset); | |
523 | on = blkoff(fs, uio->uio_offset); | |
524 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
525 | diff = ip->i_size - uio->uio_offset; | |
526 | if (diff <= 0) | |
527 | return (0); | |
528 | if (diff < n) | |
529 | n = diff; | |
b373e060 | 530 | size = blksize(fs, ip, lbn); |
e16fa59e | 531 | rablock = lbn + 1; |
20aa076b KM |
532 | if (vp->v_lastr + 1 == lbn && |
533 | lblktosize(fs, rablock) < ip->i_size) | |
534 | error = breada(ITOV(ip), lbn, size, rablock, | |
535 | blksize(fs, ip, rablock), NOCRED, &bp); | |
b373e060 | 536 | else |
e16fa59e | 537 | error = bread(ITOV(ip), lbn, size, NOCRED, &bp); |
de67eefc | 538 | vp->v_lastr = lbn; |
b373e060 KM |
539 | n = MIN(n, size - bp->b_resid); |
540 | if (error) { | |
541 | brelse(bp); | |
542 | return (error); | |
543 | } | |
544 | error = uiomove(bp->b_un.b_addr + on, (int)n, uio); | |
545 | if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size) | |
546 | bp->b_flags |= B_AGE; | |
547 | brelse(bp); | |
548 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
549 | return (error); | |
550 | } | |
551 | ||
552 | /* | |
553 | * Vnode op for writing. | |
554 | */ | |
555 | ufs_write(vp, uio, ioflag, cred) | |
556 | register struct vnode *vp; | |
557 | struct uio *uio; | |
558 | int ioflag; | |
559 | struct ucred *cred; | |
560 | { | |
561 | register struct inode *ip = VTOI(vp); | |
562 | register struct fs *fs; | |
563 | struct buf *bp; | |
564 | daddr_t lbn, bn; | |
565 | u_long osize; | |
566 | int i, n, on, flags; | |
567 | int count, size, resid, error = 0; | |
568 | ||
569 | if (uio->uio_rw != UIO_WRITE) | |
570 | panic("ufs_write mode"); | |
571 | switch (vp->v_type) { | |
572 | case VREG: | |
573 | if (ioflag & IO_APPEND) | |
574 | uio->uio_offset = ip->i_size; | |
575 | /* fall through */ | |
576 | case VLNK: | |
577 | break; | |
578 | ||
579 | case VDIR: | |
580 | if ((ioflag & IO_SYNC) == 0) | |
581 | panic("ufs_write nonsync dir write"); | |
582 | break; | |
583 | ||
584 | default: | |
585 | panic("ufs_write type"); | |
586 | } | |
587 | if (uio->uio_offset < 0) | |
588 | return (EINVAL); | |
589 | if (uio->uio_resid == 0) | |
590 | return (0); | |
591 | /* | |
592 | * Maybe this should be above the vnode op call, but so long as | |
593 | * file servers have no limits, i don't think it matters | |
594 | */ | |
595 | if (vp->v_type == VREG && | |
596 | uio->uio_offset + uio->uio_resid > | |
597 | u.u_rlimit[RLIMIT_FSIZE].rlim_cur) { | |
598 | psignal(u.u_procp, SIGXFSZ); | |
599 | return (EFBIG); | |
600 | } | |
601 | resid = uio->uio_resid; | |
602 | osize = ip->i_size; | |
603 | fs = ip->i_fs; | |
e16fa59e KM |
604 | flags = 0; |
605 | if (ioflag & IO_SYNC) | |
606 | flags = B_SYNC; | |
b373e060 KM |
607 | do { |
608 | lbn = lblkno(fs, uio->uio_offset); | |
609 | on = blkoff(fs, uio->uio_offset); | |
610 | n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid); | |
611 | if (n < fs->fs_bsize) | |
e16fa59e | 612 | flags |= B_CLRBUF; |
b373e060 | 613 | else |
e16fa59e KM |
614 | flags &= ~B_CLRBUF; |
615 | if (error = balloc(ip, lbn, (int)(on + n), &bp, flags)) | |
b373e060 | 616 | break; |
e16fa59e | 617 | bn = bp->b_blkno; |
b373e060 KM |
618 | if (uio->uio_offset + n > ip->i_size) |
619 | ip->i_size = uio->uio_offset + n; | |
620 | size = blksize(fs, ip, lbn); | |
621 | count = howmany(size, CLBYTES); | |
622 | for (i = 0; i < count; i++) | |
623 | munhash(ip->i_devvp, bn + i * CLBYTES / DEV_BSIZE); | |
b373e060 | 624 | n = MIN(n, size - bp->b_resid); |
b373e060 KM |
625 | error = uiomove(bp->b_un.b_addr + on, n, uio); |
626 | if (ioflag & IO_SYNC) | |
627 | (void) bwrite(bp); | |
628 | else if (n + on == fs->fs_bsize) { | |
629 | bp->b_flags |= B_AGE; | |
630 | bawrite(bp); | |
631 | } else | |
632 | bdwrite(bp); | |
633 | ip->i_flag |= IUPD|ICHG; | |
634 | if (cred->cr_uid != 0) | |
635 | ip->i_mode &= ~(ISUID|ISGID); | |
636 | } while (error == 0 && uio->uio_resid > 0 && n != 0); | |
637 | if (error && (ioflag & IO_UNIT)) { | |
e16fa59e | 638 | (void) itrunc(ip, osize, ioflag & IO_SYNC); |
b373e060 KM |
639 | uio->uio_offset -= resid - uio->uio_resid; |
640 | uio->uio_resid = resid; | |
641 | } | |
642 | return (error); | |
643 | } | |
644 | ||
7188ac27 KM |
645 | /* ARGSUSED */ |
646 | ufs_ioctl(vp, com, data, fflag, cred) | |
647 | struct vnode *vp; | |
648 | int com; | |
649 | caddr_t data; | |
650 | int fflag; | |
651 | struct ucred *cred; | |
bb1b75f4 | 652 | { |
bb1b75f4 | 653 | |
7188ac27 KM |
654 | return (ENOTTY); |
655 | } | |
656 | ||
657 | /* ARGSUSED */ | |
d1c43d7f | 658 | ufs_select(vp, which, fflags, cred) |
7188ac27 | 659 | struct vnode *vp; |
d1c43d7f | 660 | int which, fflags; |
7188ac27 KM |
661 | struct ucred *cred; |
662 | { | |
663 | ||
7188ac27 | 664 | return (1); /* XXX */ |
bb1b75f4 | 665 | } |
d67a03eb | 666 | |
4f083fd7 | 667 | /* |
7188ac27 KM |
668 | * Mmap a file |
669 | * | |
670 | * NB Currently unsupported. | |
4f083fd7 | 671 | */ |
7188ac27 KM |
672 | /* ARGSUSED */ |
673 | ufs_mmap(vp, fflags, cred) | |
674 | struct vnode *vp; | |
675 | int fflags; | |
676 | struct ucred *cred; | |
d67a03eb | 677 | { |
d67a03eb | 678 | |
7188ac27 | 679 | return (EINVAL); |
d67a03eb | 680 | } |
64d3a787 | 681 | |
4f083fd7 | 682 | /* |
7188ac27 | 683 | * Synch an open file. |
4f083fd7 | 684 | */ |
7188ac27 | 685 | /* ARGSUSED */ |
86cdabf6 | 686 | ufs_fsync(vp, fflags, cred, waitfor) |
7188ac27 KM |
687 | struct vnode *vp; |
688 | int fflags; | |
689 | struct ucred *cred; | |
86cdabf6 | 690 | int waitfor; |
528f664c | 691 | { |
86cdabf6 | 692 | struct inode *ip = VTOI(vp); |
7188ac27 | 693 | |
7188ac27 KM |
694 | if (fflags&FWRITE) |
695 | ip->i_flag |= ICHG; | |
e16fa59e KM |
696 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); |
697 | return (iupdat(ip, &time, &time, waitfor == MNT_WAIT)); | |
528f664c SL |
698 | } |
699 | ||
4f083fd7 | 700 | /* |
7188ac27 KM |
701 | * Seek on a file |
702 | * | |
703 | * Nothing to do, so just return. | |
4f083fd7 | 704 | */ |
7188ac27 KM |
705 | /* ARGSUSED */ |
706 | ufs_seek(vp, oldoff, newoff, cred) | |
707 | struct vnode *vp; | |
708 | off_t oldoff, newoff; | |
709 | struct ucred *cred; | |
528f664c | 710 | { |
7188ac27 KM |
711 | |
712 | return (0); | |
713 | } | |
714 | ||
715 | /* | |
716 | * ufs remove | |
717 | * Hard to avoid races here, especially | |
718 | * in unlinking directories. | |
719 | */ | |
720 | ufs_remove(ndp) | |
721 | struct nameidata *ndp; | |
722 | { | |
723 | register struct inode *ip, *dp; | |
724 | int error; | |
725 | ||
726 | ip = VTOI(ndp->ni_vp); | |
727 | dp = VTOI(ndp->ni_dvp); | |
728 | error = dirremove(ndp); | |
729 | if (!error) { | |
730 | ip->i_nlink--; | |
731 | ip->i_flag |= ICHG; | |
528f664c | 732 | } |
7188ac27 KM |
733 | if (dp == ip) |
734 | vrele(ITOV(ip)); | |
735 | else | |
736 | iput(ip); | |
737 | iput(dp); | |
738 | return (error); | |
4f083fd7 SL |
739 | } |
740 | ||
741 | /* | |
7188ac27 | 742 | * link vnode call |
4f083fd7 | 743 | */ |
7188ac27 KM |
744 | ufs_link(vp, ndp) |
745 | register struct vnode *vp; | |
746 | register struct nameidata *ndp; | |
4f083fd7 | 747 | { |
7188ac27 KM |
748 | register struct inode *ip = VTOI(vp); |
749 | int error; | |
4f083fd7 | 750 | |
7188ac27 KM |
751 | if (ndp->ni_dvp != vp) |
752 | ILOCK(ip); | |
753 | if (ip->i_nlink == LINK_MAX - 1) { | |
754 | error = EMLINK; | |
755 | goto out; | |
756 | } | |
757 | ip->i_nlink++; | |
758 | ip->i_flag |= ICHG; | |
759 | error = iupdat(ip, &time, &time, 1); | |
760 | if (!error) | |
761 | error = direnter(ip, ndp); | |
762 | out: | |
763 | if (ndp->ni_dvp != vp) | |
764 | IUNLOCK(ip); | |
765 | if (error) { | |
766 | ip->i_nlink--; | |
82252d2b | 767 | ip->i_flag |= ICHG; |
7188ac27 KM |
768 | } |
769 | return (error); | |
528f664c SL |
770 | } |
771 | ||
4f083fd7 SL |
772 | /* |
773 | * Rename system call. | |
774 | * rename("foo", "bar"); | |
775 | * is essentially | |
776 | * unlink("bar"); | |
777 | * link("foo", "bar"); | |
778 | * unlink("foo"); | |
779 | * but ``atomically''. Can't do full commit without saving state in the | |
780 | * inode on disk which isn't feasible at this time. Best we can do is | |
781 | * always guarantee the target exists. | |
782 | * | |
783 | * Basic algorithm is: | |
784 | * | |
785 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 786 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
787 | * from underneath us while we work (it may be truncated by |
788 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
789 | * 2) Link source to destination. If destination already exists, |
790 | * delete it first. | |
68f21562 KM |
791 | * 3) Unlink source reference to inode if still around. If a |
792 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
793 | * is different from the source, patch the ".." entry in the |
794 | * directory. | |
4f083fd7 | 795 | */ |
7188ac27 KM |
796 | ufs_rename(fndp, tndp) |
797 | register struct nameidata *fndp, *tndp; | |
528f664c | 798 | { |
4f083fd7 | 799 | register struct inode *ip, *xp, *dp; |
68f21562 KM |
800 | struct dirtemplate dirbuf; |
801 | int doingdirectory = 0, oldparent = 0, newparent = 0; | |
a5390dce | 802 | int error = 0; |
4f083fd7 | 803 | |
7188ac27 KM |
804 | dp = VTOI(fndp->ni_dvp); |
805 | ip = VTOI(fndp->ni_vp); | |
806 | ILOCK(ip); | |
4f083fd7 | 807 | if ((ip->i_mode&IFMT) == IFDIR) { |
7188ac27 | 808 | register struct direct *d = &fndp->ni_dent; |
4f083fd7 | 809 | |
4f083fd7 | 810 | /* |
046f18d1 | 811 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 812 | */ |
7188ac27 KM |
813 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip || |
814 | fndp->ni_isdotdot || (ip->i_flag & IRENAME)) { | |
815 | IUNLOCK(ip); | |
816 | ufs_abortop(fndp); | |
817 | ufs_abortop(tndp); | |
818 | return (EINVAL); | |
4f083fd7 | 819 | } |
68f21562 | 820 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
821 | oldparent = dp->i_number; |
822 | doingdirectory++; | |
823 | } | |
7188ac27 | 824 | vrele(fndp->ni_dvp); |
4f083fd7 SL |
825 | |
826 | /* | |
827 | * 1) Bump link count while we're moving stuff | |
828 | * around. If we crash somewhere before | |
829 | * completing our work, the link count | |
830 | * may be wrong, but correctable. | |
831 | */ | |
832 | ip->i_nlink++; | |
833 | ip->i_flag |= ICHG; | |
7188ac27 | 834 | error = iupdat(ip, &time, &time, 1); |
a388503d | 835 | IUNLOCK(ip); |
4f083fd7 SL |
836 | |
837 | /* | |
838 | * When the target exists, both the directory | |
7188ac27 | 839 | * and target vnodes are returned locked. |
4f083fd7 | 840 | */ |
7188ac27 KM |
841 | dp = VTOI(tndp->ni_dvp); |
842 | xp = NULL; | |
843 | if (tndp->ni_vp) | |
844 | xp = VTOI(tndp->ni_vp); | |
046f18d1 SL |
845 | /* |
846 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
847 | * parent) then the source directory must not be in the |
848 | * directory heirarchy above the target, as this would | |
849 | * orphan everything below the source directory. Also | |
850 | * the user must have write permission in the source so | |
851 | * as to be able to change "..". We must repeat the call | |
852 | * to namei, as the parent directory is unlocked by the | |
853 | * call to checkpath(). | |
046f18d1 | 854 | */ |
68f21562 KM |
855 | if (oldparent != dp->i_number) |
856 | newparent = dp->i_number; | |
857 | if (doingdirectory && newparent) { | |
7188ac27 | 858 | if (error = iaccess(ip, IWRITE, tndp->ni_cred)) |
81552f0f | 859 | goto bad; |
7188ac27 | 860 | tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE; |
81552f0f | 861 | do { |
7188ac27 | 862 | dp = VTOI(tndp->ni_dvp); |
81552f0f | 863 | if (xp != NULL) |
79cf21e2 | 864 | iput(xp); |
7188ac27 | 865 | if (error = checkpath(ip, dp, tndp->ni_cred)) |
81552f0f | 866 | goto out; |
7188ac27 | 867 | if (error = namei(tndp)) |
81552f0f | 868 | goto out; |
7188ac27 KM |
869 | xp = NULL; |
870 | if (tndp->ni_vp) | |
871 | xp = VTOI(tndp->ni_vp); | |
872 | } while (dp != VTOI(tndp->ni_dvp)); | |
81552f0f | 873 | } |
4f083fd7 SL |
874 | /* |
875 | * 2) If target doesn't exist, link the target | |
876 | * to the source and unlink the source. | |
877 | * Otherwise, rewrite the target directory | |
878 | * entry to reference the source inode and | |
879 | * expunge the original entry's existence. | |
880 | */ | |
4f083fd7 | 881 | if (xp == NULL) { |
7188ac27 KM |
882 | if (dp->i_dev != ip->i_dev) |
883 | panic("rename: EXDEV"); | |
4f083fd7 | 884 | /* |
68f21562 KM |
885 | * Account for ".." in new directory. |
886 | * When source and destination have the same | |
887 | * parent we don't fool with the link count. | |
4f083fd7 | 888 | */ |
68f21562 | 889 | if (doingdirectory && newparent) { |
4f083fd7 SL |
890 | dp->i_nlink++; |
891 | dp->i_flag |= ICHG; | |
7188ac27 | 892 | error = iupdat(dp, &time, &time, 1); |
4f083fd7 | 893 | } |
7188ac27 | 894 | if (error = direnter(ip, tndp)) |
4f083fd7 SL |
895 | goto out; |
896 | } else { | |
7188ac27 KM |
897 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
898 | panic("rename: EXDEV"); | |
e69c3c9c SL |
899 | /* |
900 | * Short circuit rename(foo, foo). | |
901 | */ | |
902 | if (xp->i_number == ip->i_number) | |
7188ac27 | 903 | panic("rename: same file"); |
80cee150 JB |
904 | /* |
905 | * If the parent directory is "sticky", then the user must | |
906 | * own the parent directory, or the destination of the rename, | |
907 | * otherwise the destination may not be changed (except by | |
908 | * root). This implements append-only directories. | |
909 | */ | |
7188ac27 KM |
910 | if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 && |
911 | tndp->ni_cred->cr_uid != dp->i_uid && | |
912 | xp->i_uid != tndp->ni_cred->cr_uid) { | |
80cee150 JB |
913 | error = EPERM; |
914 | goto bad; | |
915 | } | |
4f083fd7 | 916 | /* |
a5390dce SL |
917 | * Target must be empty if a directory |
918 | * and have no links to it. | |
4f083fd7 SL |
919 | * Also, insure source and target are |
920 | * compatible (both directories, or both | |
921 | * not directories). | |
922 | */ | |
923 | if ((xp->i_mode&IFMT) == IFDIR) { | |
7188ac27 KM |
924 | if (!dirempty(xp, dp->i_number, tndp->ni_cred) || |
925 | xp->i_nlink > 2) { | |
a5390dce | 926 | error = ENOTEMPTY; |
4f083fd7 SL |
927 | goto bad; |
928 | } | |
929 | if (!doingdirectory) { | |
a5390dce | 930 | error = ENOTDIR; |
4f083fd7 SL |
931 | goto bad; |
932 | } | |
7188ac27 | 933 | cache_purge(ITOV(dp)); |
4f083fd7 | 934 | } else if (doingdirectory) { |
a5390dce | 935 | error = EISDIR; |
4f083fd7 SL |
936 | goto bad; |
937 | } | |
7188ac27 KM |
938 | if (error = dirrewrite(dp, ip, tndp)) |
939 | goto bad; | |
940 | vput(ITOV(dp)); | |
4f083fd7 | 941 | /* |
a5390dce SL |
942 | * Adjust the link count of the target to |
943 | * reflect the dirrewrite above. If this is | |
944 | * a directory it is empty and there are | |
945 | * no links to it, so we can squash the inode and | |
946 | * any space associated with it. We disallowed | |
947 | * renaming over top of a directory with links to | |
68f21562 KM |
948 | * it above, as the remaining link would point to |
949 | * a directory without "." or ".." entries. | |
4f083fd7 | 950 | */ |
a5390dce | 951 | xp->i_nlink--; |
4f083fd7 | 952 | if (doingdirectory) { |
a5390dce SL |
953 | if (--xp->i_nlink != 0) |
954 | panic("rename: linked directory"); | |
e16fa59e | 955 | error = itrunc(xp, (u_long)0, IO_SYNC); |
a5390dce | 956 | } |
4f083fd7 | 957 | xp->i_flag |= ICHG; |
88d931ba | 958 | iput(xp); |
31db12cb | 959 | xp = NULL; |
4f083fd7 SL |
960 | } |
961 | ||
962 | /* | |
963 | * 3) Unlink the source. | |
964 | */ | |
7188ac27 KM |
965 | fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; |
966 | (void)namei(fndp); | |
967 | if (fndp->ni_vp != NULL) { | |
968 | xp = VTOI(fndp->ni_vp); | |
969 | dp = VTOI(fndp->ni_dvp); | |
970 | } else { | |
79cf21e2 KM |
971 | if (fndp->ni_dvp != NULL) |
972 | vput(fndp->ni_dvp); | |
7188ac27 | 973 | xp = NULL; |
4f1a9037 | 974 | dp = NULL; |
7188ac27 | 975 | } |
4f083fd7 | 976 | /* |
7188ac27 | 977 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
978 | * changed while the new name has been entered. If the source is |
979 | * a file then the entry may have been unlinked or renamed. In | |
980 | * either case there is no further work to be done. If the source | |
981 | * is a directory then it cannot have been rmdir'ed; its link | |
982 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 983 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 984 | * rename. |
4f083fd7 | 985 | */ |
4f1a9037 | 986 | if (xp != ip) { |
68f21562 | 987 | if (doingdirectory) |
4f1a9037 | 988 | panic("rename: lost dir entry"); |
68f21562 | 989 | } else { |
4f083fd7 | 990 | /* |
68f21562 KM |
991 | * If the source is a directory with a |
992 | * new parent, the link count of the old | |
993 | * parent directory must be decremented | |
994 | * and ".." set to point to the new parent. | |
4f083fd7 | 995 | */ |
68f21562 | 996 | if (doingdirectory && newparent) { |
4f083fd7 SL |
997 | dp->i_nlink--; |
998 | dp->i_flag |= ICHG; | |
86cdabf6 | 999 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, |
7188ac27 | 1000 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 KM |
1001 | UIO_SYSSPACE, IO_NODELOCKED, |
1002 | tndp->ni_cred, (int *)0); | |
68f21562 KM |
1003 | if (error == 0) { |
1004 | if (dirbuf.dotdot_namlen != 2 || | |
1005 | dirbuf.dotdot_name[0] != '.' || | |
1006 | dirbuf.dotdot_name[1] != '.') { | |
8ad54d9e | 1007 | dirbad(xp, 12, "rename: mangled dir"); |
68f21562 KM |
1008 | } else { |
1009 | dirbuf.dotdot_ino = newparent; | |
86cdabf6 | 1010 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), |
68f21562 KM |
1011 | (caddr_t)&dirbuf, |
1012 | sizeof (struct dirtemplate), | |
93e273b9 | 1013 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1014 | IO_NODELOCKED|IO_SYNC, |
7188ac27 KM |
1015 | tndp->ni_cred, (int *)0); |
1016 | cache_purge(ITOV(dp)); | |
68f21562 KM |
1017 | } |
1018 | } | |
4f083fd7 | 1019 | } |
7188ac27 KM |
1020 | error = dirremove(fndp); |
1021 | if (!error) { | |
68f21562 KM |
1022 | xp->i_nlink--; |
1023 | xp->i_flag |= ICHG; | |
4f083fd7 | 1024 | } |
68f21562 | 1025 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1026 | } |
4f083fd7 | 1027 | if (dp) |
7188ac27 | 1028 | vput(ITOV(dp)); |
68f21562 | 1029 | if (xp) |
7188ac27 KM |
1030 | vput(ITOV(xp)); |
1031 | vrele(ITOV(ip)); | |
1032 | return (error); | |
a5390dce | 1033 | |
4f083fd7 | 1034 | bad: |
4f083fd7 | 1035 | if (xp) |
7188ac27 KM |
1036 | vput(ITOV(xp)); |
1037 | vput(ITOV(dp)); | |
4f083fd7 SL |
1038 | out: |
1039 | ip->i_nlink--; | |
1040 | ip->i_flag |= ICHG; | |
7188ac27 KM |
1041 | vrele(ITOV(ip)); |
1042 | return (error); | |
64d3a787 | 1043 | } |
88a7a62a SL |
1044 | |
1045 | /* | |
1046 | * A virgin directory (no blushing please). | |
1047 | */ | |
1048 | struct dirtemplate mastertemplate = { | |
1049 | 0, 12, 1, ".", | |
1050 | 0, DIRBLKSIZ - 12, 2, ".." | |
1051 | }; | |
1052 | ||
1053 | /* | |
1054 | * Mkdir system call | |
1055 | */ | |
7188ac27 KM |
1056 | ufs_mkdir(ndp, vap) |
1057 | struct nameidata *ndp; | |
1058 | struct vattr *vap; | |
88a7a62a | 1059 | { |
88a7a62a | 1060 | register struct inode *ip, *dp; |
7188ac27 KM |
1061 | struct inode *tip; |
1062 | struct vnode *dvp; | |
88a7a62a | 1063 | struct dirtemplate dirtemplate; |
7188ac27 KM |
1064 | int error; |
1065 | int dmode; | |
1066 | ||
1067 | dvp = ndp->ni_dvp; | |
1068 | dp = VTOI(dvp); | |
1069 | dmode = vap->va_mode&0777; | |
1070 | dmode |= IFDIR; | |
88a7a62a SL |
1071 | /* |
1072 | * Must simulate part of maknode here | |
1073 | * in order to acquire the inode, but | |
1074 | * not have it entered in the parent | |
1075 | * directory. The entry is made later | |
1076 | * after writing "." and ".." entries out. | |
1077 | */ | |
7188ac27 KM |
1078 | error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip); |
1079 | if (error) { | |
88a7a62a | 1080 | iput(dp); |
7188ac27 | 1081 | return (error); |
88a7a62a | 1082 | } |
7188ac27 | 1083 | ip = tip; |
88a7a62a SL |
1084 | #ifdef QUOTA |
1085 | if (ip->i_dquot != NODQUOT) | |
1086 | panic("mkdir: dquot"); | |
1087 | #endif | |
1088 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1089 | ip->i_mode = dmode; |
1090 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 1091 | ip->i_nlink = 2; |
7188ac27 | 1092 | ip->i_uid = ndp->ni_cred->cr_uid; |
88a7a62a SL |
1093 | ip->i_gid = dp->i_gid; |
1094 | #ifdef QUOTA | |
1095 | ip->i_dquot = inoquota(ip); | |
1096 | #endif | |
7188ac27 | 1097 | error = iupdat(ip, &time, &time, 1); |
88a7a62a SL |
1098 | |
1099 | /* | |
1100 | * Bump link count in parent directory | |
1101 | * to reflect work done below. Should | |
1102 | * be done before reference is created | |
1103 | * so reparation is possible if we crash. | |
1104 | */ | |
1105 | dp->i_nlink++; | |
1106 | dp->i_flag |= ICHG; | |
7188ac27 | 1107 | error = iupdat(dp, &time, &time, 1); |
88a7a62a SL |
1108 | |
1109 | /* | |
1110 | * Initialize directory with "." | |
1111 | * and ".." from static template. | |
1112 | */ | |
1113 | dirtemplate = mastertemplate; | |
1114 | dirtemplate.dot_ino = ip->i_number; | |
1115 | dirtemplate.dotdot_ino = dp->i_number; | |
86cdabf6 | 1116 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, |
7188ac27 | 1117 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1118 | IO_NODELOCKED|IO_SYNC, ndp->ni_cred, (int *)0); |
7188ac27 | 1119 | if (error) { |
88a7a62a SL |
1120 | dp->i_nlink--; |
1121 | dp->i_flag |= ICHG; | |
1122 | goto bad; | |
1123 | } | |
7188ac27 KM |
1124 | if (DIRBLKSIZ > dp->i_fs->fs_fsize) |
1125 | panic("mkdir: blksize"); /* XXX - should grow w/balloc() */ | |
23de9f20 KM |
1126 | else |
1127 | ip->i_size = DIRBLKSIZ; | |
88a7a62a SL |
1128 | /* |
1129 | * Directory all set up, now | |
1130 | * install the entry for it in | |
1131 | * the parent directory. | |
1132 | */ | |
7188ac27 | 1133 | error = direnter(ip, ndp); |
88a7a62a | 1134 | dp = NULL; |
7188ac27 | 1135 | if (error) { |
715baff1 | 1136 | ndp->ni_nameiop = LOOKUP | NOCACHE; |
7188ac27 KM |
1137 | error = namei(ndp); |
1138 | if (!error) { | |
1139 | dp = VTOI(ndp->ni_vp); | |
88a7a62a SL |
1140 | dp->i_nlink--; |
1141 | dp->i_flag |= ICHG; | |
1142 | } | |
1143 | } | |
1144 | bad: | |
1145 | /* | |
1146 | * No need to do an explicit itrunc here, | |
7188ac27 | 1147 | * vrele will do this for us because we set |
88a7a62a SL |
1148 | * the link count to 0. |
1149 | */ | |
7188ac27 | 1150 | if (error) { |
88a7a62a SL |
1151 | ip->i_nlink = 0; |
1152 | ip->i_flag |= ICHG; | |
cbcdacd6 KM |
1153 | iput(ip); |
1154 | } else | |
1155 | ndp->ni_vp = ITOV(ip); | |
88a7a62a SL |
1156 | if (dp) |
1157 | iput(dp); | |
7188ac27 | 1158 | return (error); |
88a7a62a SL |
1159 | } |
1160 | ||
1161 | /* | |
1162 | * Rmdir system call. | |
1163 | */ | |
7188ac27 KM |
1164 | ufs_rmdir(ndp) |
1165 | register struct nameidata *ndp; | |
88a7a62a | 1166 | { |
88a7a62a | 1167 | register struct inode *ip, *dp; |
7188ac27 KM |
1168 | int error = 0; |
1169 | ||
1170 | ip = VTOI(ndp->ni_vp); | |
1171 | dp = VTOI(ndp->ni_dvp); | |
88a7a62a SL |
1172 | /* |
1173 | * No rmdir "." please. | |
1174 | */ | |
1175 | if (dp == ip) { | |
7188ac27 | 1176 | vrele(ITOV(dp)); |
88a7a62a | 1177 | iput(ip); |
7188ac27 | 1178 | return (EINVAL); |
88a7a62a SL |
1179 | } |
1180 | /* | |
1181 | * Verify the directory is empty (and valid). | |
1182 | * (Rmdir ".." won't be valid since | |
1183 | * ".." will contain a reference to | |
1184 | * the current directory and thus be | |
1185 | * non-empty.) | |
1186 | */ | |
7188ac27 KM |
1187 | if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) { |
1188 | error = ENOTEMPTY; | |
88a7a62a SL |
1189 | goto out; |
1190 | } | |
1191 | /* | |
1192 | * Delete reference to directory before purging | |
1193 | * inode. If we crash in between, the directory | |
1194 | * will be reattached to lost+found, | |
1195 | */ | |
7188ac27 | 1196 | if (error = dirremove(ndp)) |
88a7a62a SL |
1197 | goto out; |
1198 | dp->i_nlink--; | |
1199 | dp->i_flag |= ICHG; | |
7188ac27 | 1200 | cache_purge(ITOV(dp)); |
88a7a62a | 1201 | iput(dp); |
7188ac27 | 1202 | ndp->ni_dvp = NULL; |
88a7a62a SL |
1203 | /* |
1204 | * Truncate inode. The only stuff left | |
1205 | * in the directory is "." and "..". The | |
1206 | * "." reference is inconsequential since | |
1207 | * we're quashing it. The ".." reference | |
1208 | * has already been adjusted above. We've | |
1209 | * removed the "." reference and the reference | |
1210 | * in the parent directory, but there may be | |
1211 | * other hard links so decrement by 2 and | |
1212 | * worry about them later. | |
1213 | */ | |
1214 | ip->i_nlink -= 2; | |
e16fa59e | 1215 | error = itrunc(ip, (u_long)0, IO_SYNC); |
7188ac27 | 1216 | cache_purge(ITOV(ip)); |
88a7a62a | 1217 | out: |
7188ac27 | 1218 | if (ndp->ni_dvp) |
88a7a62a SL |
1219 | iput(dp); |
1220 | iput(ip); | |
7188ac27 | 1221 | return (error); |
88a7a62a SL |
1222 | } |
1223 | ||
7188ac27 KM |
1224 | /* |
1225 | * symlink -- make a symbolic link | |
1226 | */ | |
1227 | ufs_symlink(ndp, vap, target) | |
1228 | struct nameidata *ndp; | |
1229 | struct vattr *vap; | |
1230 | char *target; | |
1231 | { | |
1232 | struct inode *ip; | |
1233 | int error; | |
1234 | ||
1235 | error = maknode(IFLNK | vap->va_mode, ndp, &ip); | |
1236 | if (error) | |
1237 | return (error); | |
86cdabf6 KM |
1238 | error = vn_rdwr(UIO_WRITE, ITOV(ip), target, strlen(target), (off_t)0, |
1239 | UIO_SYSSPACE, IO_NODELOCKED, ndp->ni_cred, (int *)0); | |
7188ac27 KM |
1240 | iput(ip); |
1241 | return (error); | |
1242 | } | |
1243 | ||
1244 | /* | |
1245 | * Vnode op for read and write | |
1246 | */ | |
930730fd | 1247 | ufs_readdir(vp, uio, cred, eofflagp) |
7188ac27 KM |
1248 | struct vnode *vp; |
1249 | register struct uio *uio; | |
7188ac27 | 1250 | struct ucred *cred; |
930730fd | 1251 | int *eofflagp; |
88a7a62a | 1252 | { |
86cdabf6 | 1253 | int count, lost, error; |
88a7a62a | 1254 | |
7188ac27 KM |
1255 | count = uio->uio_resid; |
1256 | count &= ~(DIRBLKSIZ - 1); | |
86cdabf6 KM |
1257 | lost = uio->uio_resid - count; |
1258 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1259 | return (EINVAL); |
7188ac27 KM |
1260 | uio->uio_resid = count; |
1261 | uio->uio_iov->iov_len = count; | |
86cdabf6 KM |
1262 | error = ufs_read(vp, uio, 0, cred); |
1263 | uio->uio_resid += lost; | |
930730fd KM |
1264 | if ((VTOI(vp)->i_size - uio->uio_offset) <= 0) |
1265 | *eofflagp = 1; | |
1266 | else | |
1267 | *eofflagp = 0; | |
7188ac27 KM |
1268 | return (error); |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Return target name of a symbolic link | |
1273 | */ | |
1274 | ufs_readlink(vp, uiop, cred) | |
1275 | struct vnode *vp; | |
1276 | struct uio *uiop; | |
1277 | struct ucred *cred; | |
1278 | { | |
1279 | ||
86cdabf6 | 1280 | return (ufs_read(vp, uiop, 0, cred)); |
7188ac27 KM |
1281 | } |
1282 | ||
1283 | /* | |
1284 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
1285 | * done. Iff ni_vp/ni_dvp not null and locked, unlock. | |
1286 | */ | |
1287 | ufs_abortop(ndp) | |
1288 | register struct nameidata *ndp; | |
1289 | { | |
7188ac27 | 1290 | |
7188ac27 | 1291 | if (ndp->ni_dvp) { |
7359b026 KM |
1292 | if (VOP_ISLOCKED(ndp->ni_dvp)) |
1293 | VOP_UNLOCK(ndp->ni_dvp); | |
7188ac27 | 1294 | vrele(ndp->ni_dvp); |
88a7a62a | 1295 | } |
7359b026 KM |
1296 | if (ndp->ni_vp) { |
1297 | if (VOP_ISLOCKED(ndp->ni_vp)) | |
1298 | VOP_UNLOCK(ndp->ni_vp); | |
1299 | vrele(ndp->ni_vp); | |
1300 | } | |
7188ac27 KM |
1301 | return; |
1302 | } | |
1303 | ||
1c3ebc10 KM |
1304 | /* |
1305 | * Lock an inode. | |
1306 | */ | |
7188ac27 KM |
1307 | ufs_lock(vp) |
1308 | struct vnode *vp; | |
1309 | { | |
1310 | register struct inode *ip = VTOI(vp); | |
1311 | ||
1312 | ILOCK(ip); | |
1313 | return (0); | |
1314 | } | |
1315 | ||
1c3ebc10 KM |
1316 | /* |
1317 | * Unlock an inode. | |
1318 | */ | |
7188ac27 KM |
1319 | ufs_unlock(vp) |
1320 | struct vnode *vp; | |
1321 | { | |
1322 | register struct inode *ip = VTOI(vp); | |
1323 | ||
1324 | if (!(ip->i_flag & ILOCKED)) | |
1325 | panic("ufs_unlock NOT LOCKED"); | |
1326 | IUNLOCK(ip); | |
1327 | return (0); | |
1328 | } | |
1329 | ||
1c3ebc10 KM |
1330 | /* |
1331 | * Check for a locked inode. | |
1332 | */ | |
1333 | ufs_islocked(vp) | |
1334 | struct vnode *vp; | |
1335 | { | |
1336 | ||
1337 | if (VTOI(vp)->i_flag & ILOCKED) | |
1338 | return (1); | |
1339 | return (0); | |
1340 | } | |
1341 | ||
7188ac27 KM |
1342 | /* |
1343 | * Get access to bmap | |
1344 | */ | |
1345 | ufs_bmap(vp, bn, vpp, bnp) | |
1346 | struct vnode *vp; | |
1347 | daddr_t bn; | |
1348 | struct vnode **vpp; | |
1349 | daddr_t *bnp; | |
1350 | { | |
1351 | struct inode *ip = VTOI(vp); | |
1352 | ||
1353 | if (vpp != NULL) | |
1354 | *vpp = ip->i_devvp; | |
1355 | if (bnp == NULL) | |
1356 | return (0); | |
1357 | return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0)); | |
88a7a62a SL |
1358 | } |
1359 | ||
1360 | /* | |
7188ac27 | 1361 | * Just call the device strategy routine |
88a7a62a | 1362 | */ |
e16fa59e KM |
1363 | int checkoverlap = 1; |
1364 | ||
7188ac27 KM |
1365 | ufs_strategy(bp) |
1366 | register struct buf *bp; | |
88a7a62a | 1367 | { |
e16fa59e KM |
1368 | register struct inode *ip = VTOI(bp->b_vp); |
1369 | register struct buf *ep; | |
1370 | struct vnode *vp; | |
1371 | struct buf *ebp; | |
1372 | daddr_t start, last; | |
1373 | int error; | |
1374 | ||
1375 | if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR) | |
1376 | panic("ufs_strategy: spec"); | |
1377 | if (bp->b_blkno == bp->b_lblkno) { | |
1378 | if (error = bmap(ip, bp->b_lblkno, &bp->b_blkno)) | |
1379 | return (error); | |
20aa076b | 1380 | if ((long)bp->b_blkno == -1) |
e16fa59e | 1381 | clrbuf(bp); |
e16fa59e | 1382 | } |
20aa076b KM |
1383 | if ((long)bp->b_blkno == -1) { |
1384 | biodone(bp); | |
e16fa59e | 1385 | return (0); |
20aa076b | 1386 | } |
e16fa59e KM |
1387 | if (checkoverlap) { |
1388 | ebp = &buf[nbuf]; | |
1389 | start = bp->b_blkno; | |
1390 | last = start + btodb(bp->b_bcount) - 1; | |
1391 | for (ep = buf; ep < ebp; ep++) { | |
1392 | if (ep == bp || (ep->b_flags & B_INVAL) || | |
1393 | ep->b_vp == (struct vnode *)0) | |
1394 | continue; | |
1395 | if (VOP_BMAP(ep->b_vp, (daddr_t)0, &vp, (daddr_t)0)) | |
1396 | continue; | |
1397 | if (vp != ip->i_devvp) | |
1398 | continue; | |
1399 | /* look for overlap */ | |
1400 | if (ep->b_bcount == 0 || ep->b_blkno > last || | |
1401 | ep->b_blkno + btodb(ep->b_bcount) <= start) | |
1402 | continue; | |
20aa076b KM |
1403 | vprint("Disk overlap", vp); |
1404 | printf("\tstart %d, end %d overlap start %d, end %d\n", | |
1405 | start, last, ep->b_blkno, | |
1406 | ep->b_blkno + btodb(ep->b_bcount) - 1); | |
e16fa59e KM |
1407 | } |
1408 | } | |
1409 | vp = ip->i_devvp; | |
1410 | bp->b_dev = vp->v_rdev; | |
1411 | (*(vp->v_op->vn_strategy))(bp); | |
7188ac27 KM |
1412 | return (0); |
1413 | } | |
88a7a62a | 1414 | |
e16fa59e KM |
1415 | /* |
1416 | * Print out the contents of an inode. | |
1417 | */ | |
1418 | ufs_print(vp) | |
1419 | struct vnode *vp; | |
1420 | { | |
1421 | register struct inode *ip = VTOI(vp); | |
1422 | ||
a8f829ed KM |
1423 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1424 | major(ip->i_dev), minor(ip->i_dev)); | |
1425 | #ifdef FIFO | |
1426 | if (vp->v_type == VFIFO) | |
1427 | fifo_printinfo(vp); | |
1428 | #endif /* FIFO */ | |
1429 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
96bae3e0 KM |
1430 | if (ip->i_spare0 == 0) |
1431 | return; | |
1432 | printf("\towner pid %d", ip->i_spare0); | |
1433 | if (ip->i_spare1) | |
1434 | printf(" waiting pid %d", ip->i_spare1); | |
1435 | printf("\n"); | |
e16fa59e KM |
1436 | } |
1437 | ||
24a31b70 KM |
1438 | /* |
1439 | * Read wrapper for special devices. | |
1440 | */ | |
1441 | ufsspec_read(vp, uio, ioflag, cred) | |
1442 | struct vnode *vp; | |
1443 | struct uio *uio; | |
1444 | int ioflag; | |
1445 | struct ucred *cred; | |
1446 | { | |
1447 | ||
1448 | /* | |
1449 | * Set access flag. | |
1450 | */ | |
1451 | VTOI(vp)->i_flag |= IACC; | |
1452 | return (spec_read(vp, uio, ioflag, cred)); | |
1453 | } | |
1454 | ||
1455 | /* | |
1456 | * Write wrapper for special devices. | |
1457 | */ | |
1458 | ufsspec_write(vp, uio, ioflag, cred) | |
1459 | struct vnode *vp; | |
1460 | struct uio *uio; | |
1461 | int ioflag; | |
1462 | struct ucred *cred; | |
1463 | { | |
1464 | ||
1465 | /* | |
1466 | * Set update and change flags. | |
1467 | */ | |
1468 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1469 | return (spec_write(vp, uio, ioflag, cred)); | |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Close wrapper for special devices. | |
1474 | * | |
1475 | * Update the times on the inode then do device close. | |
1476 | */ | |
1477 | ufsspec_close(vp, fflag, cred) | |
1478 | struct vnode *vp; | |
1479 | int fflag; | |
1480 | struct ucred *cred; | |
1481 | { | |
1482 | register struct inode *ip = VTOI(vp); | |
1483 | ||
de67eefc | 1484 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 KM |
1485 | ITIMES(ip, &time, &time); |
1486 | return (spec_close(vp, fflag, cred)); | |
1487 | } | |
1488 | ||
d1c43d7f KM |
1489 | #ifdef FIFO |
1490 | /* | |
1491 | * Read wrapper for fifo's | |
1492 | */ | |
1493 | ufsfifo_read(vp, uio, ioflag, cred) | |
1494 | struct vnode *vp; | |
1495 | struct uio *uio; | |
1496 | int ioflag; | |
1497 | struct ucred *cred; | |
1498 | { | |
1499 | ||
1500 | /* | |
1501 | * Set access flag. | |
1502 | */ | |
1503 | VTOI(vp)->i_flag |= IACC; | |
1504 | return (fifo_read(vp, uio, ioflag, cred)); | |
1505 | } | |
1506 | ||
1507 | /* | |
1508 | * Write wrapper for fifo's. | |
1509 | */ | |
1510 | ufsfifo_write(vp, uio, ioflag, cred) | |
1511 | struct vnode *vp; | |
1512 | struct uio *uio; | |
1513 | int ioflag; | |
1514 | struct ucred *cred; | |
1515 | { | |
1516 | ||
1517 | /* | |
1518 | * Set update and change flags. | |
1519 | */ | |
1520 | VTOI(vp)->i_flag |= IUPD|ICHG; | |
1521 | return (fifo_write(vp, uio, ioflag, cred)); | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * Close wrapper for fifo's. | |
1526 | * | |
1527 | * Update the times on the inode then do device close. | |
1528 | */ | |
1529 | ufsfifo_close(vp, fflag, cred) | |
1530 | struct vnode *vp; | |
1531 | int fflag; | |
1532 | struct ucred *cred; | |
1533 | { | |
1534 | register struct inode *ip = VTOI(vp); | |
1535 | ||
1536 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) | |
1537 | ITIMES(ip, &time, &time); | |
1538 | return (fifo_close(vp, fflag, cred)); | |
1539 | } | |
1540 | #endif /* FIFO */ | |
1541 | ||
7188ac27 KM |
1542 | /* |
1543 | * Make a new file. | |
1544 | */ | |
1545 | maknode(mode, ndp, ipp) | |
1546 | int mode; | |
1547 | register struct nameidata *ndp; | |
1548 | struct inode **ipp; | |
1549 | { | |
1550 | register struct inode *ip; | |
1551 | struct inode *tip; | |
1552 | register struct inode *pdir = VTOI(ndp->ni_dvp); | |
1553 | ino_t ipref; | |
1554 | int error; | |
1555 | ||
1556 | *ipp = 0; | |
1557 | if ((mode & IFMT) == IFDIR) | |
1558 | ipref = dirpref(pdir->i_fs); | |
1559 | else | |
1560 | ipref = pdir->i_number; | |
1561 | error = ialloc(pdir, ipref, mode, &tip); | |
1562 | if (error) { | |
1563 | iput(pdir); | |
1564 | return (error); | |
1565 | } | |
1566 | ip = tip; | |
1567 | #ifdef QUOTA | |
1568 | if (ip->i_dquot != NODQUOT) | |
1569 | panic("maknode: dquot"); | |
1570 | #endif | |
1571 | ip->i_flag |= IACC|IUPD|ICHG; | |
1572 | if ((mode & IFMT) == 0) | |
1573 | mode |= IFREG; | |
1574 | ip->i_mode = mode; | |
1575 | ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */ | |
1576 | ip->i_nlink = 1; | |
1577 | ip->i_uid = ndp->ni_cred->cr_uid; | |
1578 | ip->i_gid = pdir->i_gid; | |
1579 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) && | |
1580 | suser(ndp->ni_cred, NULL)) | |
1581 | ip->i_mode &= ~ISGID; | |
1582 | #ifdef QUOTA | |
1583 | ip->i_dquot = inoquota(ip); | |
1584 | #endif | |
1585 | ||
1586 | /* | |
1587 | * Make sure inode goes to disk before directory entry. | |
1588 | */ | |
1589 | if ((error = iupdat(ip, &time, &time, 1)) || | |
1590 | (error = direnter(ip, ndp))) { | |
1591 | /* | |
1592 | * Write error occurred trying to update the inode | |
1593 | * or the directory so must deallocate the inode. | |
1594 | */ | |
1595 | ip->i_nlink = 0; | |
1596 | ip->i_flag |= ICHG; | |
1597 | iput(ip); | |
1598 | return (error); | |
1599 | } | |
1600 | *ipp = ip; | |
1601 | return (0); | |
88a7a62a | 1602 | } |