Commit | Line | Data |
---|---|---|
2e073567 | 1 | /* lfs_vnops.c 4.56 83/05/21 */ |
6459ebe0 | 2 | |
d67a03eb BJ |
3 | #include "../h/param.h" |
4 | #include "../h/systm.h" | |
d67a03eb BJ |
5 | #include "../h/dir.h" |
6 | #include "../h/user.h" | |
35e7c31a | 7 | #include "../h/kernel.h" |
d67a03eb | 8 | #include "../h/file.h" |
6459ebe0 | 9 | #include "../h/stat.h" |
3e78e260 | 10 | #include "../h/inode.h" |
6459ebe0 | 11 | #include "../h/fs.h" |
3e78e260 | 12 | #include "../h/buf.h" |
3e78e260 | 13 | #include "../h/proc.h" |
0a77f278 | 14 | #include "../h/quota.h" |
4147b3f6 | 15 | #include "../h/descrip.h" |
31949305 BJ |
16 | #include "../h/uio.h" |
17 | #include "../h/socket.h" | |
b32450f4 | 18 | #include "../h/socketvar.h" |
4f083fd7 | 19 | #include "../h/nami.h" |
3e78e260 | 20 | |
4f083fd7 SL |
21 | /* |
22 | * Change current working directory (``.''). | |
23 | */ | |
3e78e260 BJ |
24 | chdir() |
25 | { | |
26 | ||
27 | chdirec(&u.u_cdir); | |
28 | } | |
29 | ||
4f083fd7 SL |
30 | /* |
31 | * Change notion of root (``/'') directory. | |
32 | */ | |
3e78e260 BJ |
33 | chroot() |
34 | { | |
35 | ||
36 | if (suser()) | |
37 | chdirec(&u.u_rdir); | |
38 | } | |
39 | ||
4f083fd7 SL |
40 | /* |
41 | * Common routine for chroot and chdir. | |
42 | */ | |
3e78e260 | 43 | chdirec(ipp) |
528f664c | 44 | register struct inode **ipp; |
3e78e260 BJ |
45 | { |
46 | register struct inode *ip; | |
47 | struct a { | |
48 | char *fname; | |
49 | }; | |
50 | ||
4f083fd7 SL |
51 | ip = namei(uchar, LOOKUP, 1); |
52 | if (ip == NULL) | |
3e78e260 | 53 | return; |
4f083fd7 | 54 | if ((ip->i_mode&IFMT) != IFDIR) { |
3e78e260 BJ |
55 | u.u_error = ENOTDIR; |
56 | goto bad; | |
57 | } | |
4f083fd7 | 58 | if (access(ip, IEXEC)) |
3e78e260 | 59 | goto bad; |
ca91bded | 60 | iunlock(ip); |
8eee8525 KM |
61 | if (*ipp) |
62 | irele(*ipp); | |
3e78e260 BJ |
63 | *ipp = ip; |
64 | return; | |
65 | ||
66 | bad: | |
67 | iput(ip); | |
68 | } | |
69 | ||
70 | /* | |
71 | * Open system call. | |
72 | */ | |
73 | open() | |
74 | { | |
75 | register struct inode *ip; | |
76 | register struct a { | |
77 | char *fname; | |
528f664c SL |
78 | int flags; |
79 | int mode; | |
3e78e260 | 80 | } *uap; |
4f083fd7 | 81 | int checkpermissions = 1, flags; |
3e78e260 BJ |
82 | |
83 | uap = (struct a *)u.u_ap; | |
4f083fd7 SL |
84 | flags = uap->flags + 1; |
85 | if ((flags&FTRUNCATE) && (flags&FWRITE) == 0) { | |
86 | u.u_error = EINVAL; | |
87 | return; | |
88 | } | |
89 | if (flags&FCREATE) { | |
90 | ip = namei(uchar, CREATE, 1); | |
528f664c SL |
91 | if (ip == NULL) { |
92 | if (u.u_error) | |
93 | return; | |
94 | ip = maknode(uap->mode&07777&(~ISVTX)); | |
95 | checkpermissions = 0; | |
4f083fd7 | 96 | flags &= ~FTRUNCATE; |
528f664c SL |
97 | } |
98 | } else | |
4f083fd7 | 99 | ip = namei(uchar, LOOKUP, 1); |
3e78e260 BJ |
100 | if (ip == NULL) |
101 | return; | |
4f083fd7 | 102 | open1(ip, flags, checkpermissions); |
3e78e260 BJ |
103 | } |
104 | ||
528f664c | 105 | #ifndef NOCOMPAT |
3e78e260 BJ |
106 | /* |
107 | * Creat system call. | |
108 | */ | |
4147b3f6 | 109 | ocreat() |
3e78e260 BJ |
110 | { |
111 | register struct inode *ip; | |
112 | register struct a { | |
113 | char *fname; | |
114 | int fmode; | |
115 | } *uap; | |
116 | ||
117 | uap = (struct a *)u.u_ap; | |
4f083fd7 | 118 | ip = namei(uchar, CREATE, 1); |
3e78e260 BJ |
119 | if (ip == NULL) { |
120 | if (u.u_error) | |
121 | return; | |
122 | ip = maknode(uap->fmode&07777&(~ISVTX)); | |
528f664c | 123 | if (ip == NULL) |
3e78e260 | 124 | return; |
528f664c | 125 | open1(ip, FWRITE, 0); |
3e78e260 | 126 | } else |
4f083fd7 | 127 | open1(ip, FWRITE|FTRUNCATE, 1); |
3e78e260 | 128 | } |
528f664c | 129 | #endif |
3e78e260 BJ |
130 | |
131 | /* | |
132 | * Common code for open and creat. | |
528f664c SL |
133 | * Check permissions (if we haven't done so already), |
134 | * allocate an open file structure, and call | |
135 | * the device open routine, if any. | |
3e78e260 | 136 | */ |
528f664c | 137 | open1(ip, mode, checkpermissions) |
3e78e260 BJ |
138 | register struct inode *ip; |
139 | register mode; | |
140 | { | |
141 | register struct file *fp; | |
528f664c | 142 | int i, flags; |
3e78e260 | 143 | |
528f664c | 144 | if (checkpermissions) { |
3e78e260 | 145 | if (mode&FREAD) |
528f664c SL |
146 | if (access(ip, IREAD)) |
147 | goto bad; | |
3e78e260 | 148 | if (mode&FWRITE) { |
528f664c SL |
149 | if (access(ip, IWRITE)) |
150 | goto bad; | |
151 | if ((ip->i_mode&IFMT) == IFDIR) { | |
3e78e260 | 152 | u.u_error = EISDIR; |
528f664c SL |
153 | goto bad; |
154 | } | |
3e78e260 BJ |
155 | } |
156 | } | |
528f664c SL |
157 | |
158 | /* | |
159 | * Check locking on inode. Release "inode lock" | |
160 | * while doing so in case we block inside flocki. | |
161 | */ | |
162 | flags = 0; | |
4f083fd7 | 163 | if (mode&(FSHLOCK|FEXLOCK)) { |
528f664c SL |
164 | iunlock(ip); |
165 | flags = flocki(ip, 0, mode); | |
166 | ilock(ip); | |
167 | if (u.u_error) | |
168 | goto bad; | |
8eee8525 | 169 | } |
528f664c | 170 | if (mode&FTRUNCATE) |
4f083fd7 | 171 | itrunc(ip, (u_long)0); |
ca91bded | 172 | iunlock(ip); |
3e78e260 BJ |
173 | if ((fp = falloc()) == NULL) |
174 | goto out; | |
528f664c | 175 | fp->f_flag = mode & FMODES; |
4147b3f6 | 176 | fp->f_type = DTYPE_FILE; |
3e78e260 BJ |
177 | i = u.u_r.r_val1; |
178 | fp->f_inode = ip; | |
f45396c3 | 179 | u.u_error = openi(ip, mode); |
528f664c SL |
180 | if (u.u_error == 0) { |
181 | u.u_pofile[i] = flags; | |
3e78e260 | 182 | return; |
528f664c | 183 | } |
3e78e260 BJ |
184 | u.u_ofile[i] = NULL; |
185 | fp->f_count--; | |
186 | out: | |
8eee8525 | 187 | irele(ip); |
528f664c SL |
188 | return; |
189 | bad: | |
190 | iput(ip); | |
3e78e260 BJ |
191 | } |
192 | ||
193 | /* | |
194 | * Mknod system call | |
195 | */ | |
196 | mknod() | |
197 | { | |
198 | register struct inode *ip; | |
199 | register struct a { | |
200 | char *fname; | |
201 | int fmode; | |
202 | int dev; | |
203 | } *uap; | |
204 | ||
205 | uap = (struct a *)u.u_ap; | |
206 | if (suser()) { | |
4f083fd7 | 207 | ip = namei(uchar, CREATE, 0); |
3e78e260 BJ |
208 | if (ip != NULL) { |
209 | u.u_error = EEXIST; | |
210 | goto out; | |
211 | } | |
212 | } | |
213 | if (u.u_error) | |
214 | return; | |
215 | ip = maknode(uap->fmode); | |
216 | if (ip == NULL) | |
217 | return; | |
218 | if (uap->dev) { | |
219 | /* | |
220 | * Want to be able to use this to make badblock | |
221 | * inodes, so don't truncate the dev number. | |
222 | */ | |
6459ebe0 | 223 | ip->i_rdev = uap->dev; |
3e78e260 BJ |
224 | ip->i_flag |= IACC|IUPD|ICHG; |
225 | } | |
226 | ||
227 | out: | |
228 | iput(ip); | |
229 | } | |
230 | ||
231 | /* | |
232 | * link system call | |
233 | */ | |
234 | link() | |
235 | { | |
236 | register struct inode *ip, *xp; | |
237 | register struct a { | |
238 | char *target; | |
239 | char *linkname; | |
240 | } *uap; | |
241 | ||
242 | uap = (struct a *)u.u_ap; | |
4f083fd7 | 243 | ip = namei(uchar, LOOKUP, 1); /* well, this routine is doomed anyhow */ |
3e78e260 BJ |
244 | if (ip == NULL) |
245 | return; | |
4f083fd7 | 246 | if ((ip->i_mode&IFMT) == IFDIR && !suser()) { |
f94ceb3b BJ |
247 | iput(ip); |
248 | return; | |
249 | } | |
3e78e260 BJ |
250 | ip->i_nlink++; |
251 | ip->i_flag |= ICHG; | |
3fd23f5c | 252 | iupdat(ip, &time, &time, 1); |
ca91bded | 253 | iunlock(ip); |
3e78e260 | 254 | u.u_dirp = (caddr_t)uap->linkname; |
4f083fd7 | 255 | xp = namei(uchar, CREATE, 0); |
3e78e260 BJ |
256 | if (xp != NULL) { |
257 | u.u_error = EEXIST; | |
258 | iput(xp); | |
259 | goto out; | |
260 | } | |
261 | if (u.u_error) | |
262 | goto out; | |
263 | if (u.u_pdir->i_dev != ip->i_dev) { | |
264 | iput(u.u_pdir); | |
265 | u.u_error = EXDEV; | |
266 | goto out; | |
267 | } | |
f2a5ad78 | 268 | u.u_error = direnter(ip); |
3e78e260 BJ |
269 | out: |
270 | if (u.u_error) { | |
271 | ip->i_nlink--; | |
272 | ip->i_flag |= ICHG; | |
273 | } | |
8eee8525 | 274 | irele(ip); |
3e78e260 BJ |
275 | } |
276 | ||
277 | /* | |
278 | * symlink -- make a symbolic link | |
279 | */ | |
280 | symlink() | |
281 | { | |
282 | register struct a { | |
283 | char *target; | |
284 | char *linkname; | |
285 | } *uap; | |
286 | register struct inode *ip; | |
287 | register char *tp; | |
288 | register c, nc; | |
289 | ||
290 | uap = (struct a *)u.u_ap; | |
291 | tp = uap->target; | |
292 | nc = 0; | |
293 | while (c = fubyte(tp)) { | |
294 | if (c < 0) { | |
295 | u.u_error = EFAULT; | |
296 | return; | |
297 | } | |
298 | tp++; | |
299 | nc++; | |
300 | } | |
301 | u.u_dirp = uap->linkname; | |
4f083fd7 | 302 | ip = namei(uchar, CREATE, 0); |
3e78e260 BJ |
303 | if (ip) { |
304 | iput(ip); | |
305 | u.u_error = EEXIST; | |
306 | return; | |
307 | } | |
308 | if (u.u_error) | |
309 | return; | |
310 | ip = maknode(IFLNK | 0777); | |
311 | if (ip == NULL) | |
312 | return; | |
31949305 | 313 | u.u_error = rdwri(UIO_WRITE, ip, uap->target, nc, 0, 0, (int *)0); |
4f083fd7 | 314 | /* handle u.u_error != 0 */ |
3e78e260 BJ |
315 | iput(ip); |
316 | } | |
317 | ||
318 | /* | |
319 | * Unlink system call. | |
320 | * Hard to avoid races here, especially | |
321 | * in unlinking directories. | |
322 | */ | |
323 | unlink() | |
324 | { | |
3e78e260 BJ |
325 | struct a { |
326 | char *fname; | |
327 | }; | |
4f083fd7 | 328 | register struct inode *ip, *dp; |
3e78e260 | 329 | |
4f083fd7 SL |
330 | ip = namei(uchar, DELETE | LOCKPARENT, 0); |
331 | if (ip == NULL) | |
3e78e260 | 332 | return; |
4f083fd7 SL |
333 | dp = u.u_pdir; |
334 | if ((ip->i_mode&IFMT) == IFDIR && !suser()) | |
3e78e260 BJ |
335 | goto out; |
336 | /* | |
337 | * Don't unlink a mounted file. | |
338 | */ | |
4f083fd7 | 339 | if (ip->i_dev != dp->i_dev) { |
3e78e260 BJ |
340 | u.u_error = EBUSY; |
341 | goto out; | |
342 | } | |
343 | if (ip->i_flag&ITEXT) | |
344 | xrele(ip); /* try once to free text */ | |
64d3a787 BJ |
345 | if (dirremove()) { |
346 | ip->i_nlink--; | |
347 | ip->i_flag |= ICHG; | |
6459ebe0 | 348 | } |
3e78e260 | 349 | out: |
4f083fd7 | 350 | if (dp == ip) |
8eee8525 KM |
351 | irele(ip); |
352 | else | |
353 | iput(ip); | |
4f083fd7 | 354 | iput(dp); |
3e78e260 BJ |
355 | } |
356 | ||
357 | /* | |
358 | * Seek system call | |
359 | */ | |
35e7c31a | 360 | lseek() |
3e78e260 BJ |
361 | { |
362 | register struct file *fp; | |
363 | register struct a { | |
528f664c | 364 | int fd; |
3e78e260 BJ |
365 | off_t off; |
366 | int sbase; | |
367 | } *uap; | |
368 | ||
369 | uap = (struct a *)u.u_ap; | |
528f664c | 370 | fp = getf(uap->fd); |
3e78e260 BJ |
371 | if (fp == NULL) |
372 | return; | |
4147b3f6 | 373 | if (fp->f_type == DTYPE_SOCKET) { |
3e78e260 BJ |
374 | u.u_error = ESPIPE; |
375 | return; | |
376 | } | |
528f664c | 377 | if (uap->sbase == FSEEK_RELATIVE) |
3e78e260 | 378 | uap->off += fp->f_offset; |
528f664c | 379 | else if (uap->sbase == FSEEK_EOF) |
3e78e260 BJ |
380 | uap->off += fp->f_inode->i_size; |
381 | fp->f_offset = uap->off; | |
382 | u.u_r.r_off = uap->off; | |
383 | } | |
384 | ||
385 | /* | |
386 | * Access system call | |
387 | */ | |
388 | saccess() | |
389 | { | |
390 | register svuid, svgid; | |
391 | register struct inode *ip; | |
392 | register struct a { | |
393 | char *fname; | |
394 | int fmode; | |
395 | } *uap; | |
396 | ||
397 | uap = (struct a *)u.u_ap; | |
398 | svuid = u.u_uid; | |
399 | svgid = u.u_gid; | |
400 | u.u_uid = u.u_ruid; | |
401 | u.u_gid = u.u_rgid; | |
4f083fd7 | 402 | ip = namei(uchar, LOOKUP, 1); |
3e78e260 | 403 | if (ip != NULL) { |
4f083fd7 | 404 | if ((uap->fmode&FACCESS_READ) && access(ip, IREAD)) |
528f664c | 405 | goto done; |
4f083fd7 | 406 | if ((uap->fmode&FACCESS_WRITE) && access(ip, IWRITE)) |
528f664c | 407 | goto done; |
4f083fd7 | 408 | if ((uap->fmode&FACCESS_EXECUTE) && access(ip, IEXEC)) |
528f664c SL |
409 | goto done; |
410 | done: | |
3e78e260 BJ |
411 | iput(ip); |
412 | } | |
413 | u.u_uid = svuid; | |
414 | u.u_gid = svgid; | |
415 | } | |
d67a03eb BJ |
416 | |
417 | /* | |
418 | * the fstat system call. | |
419 | */ | |
420 | fstat() | |
421 | { | |
422 | register struct file *fp; | |
423 | register struct a { | |
528f664c | 424 | int fd; |
d67a03eb BJ |
425 | struct stat *sb; |
426 | } *uap; | |
427 | ||
428 | uap = (struct a *)u.u_ap; | |
528f664c | 429 | fp = getf(uap->fd); |
e92a04af | 430 | if (fp == NULL) |
d67a03eb | 431 | return; |
4147b3f6 | 432 | if (fp->f_type == DTYPE_SOCKET) |
cc15ab5d | 433 | u.u_error = sostat(fp->f_socket, uap->sb); |
e92a04af BJ |
434 | else |
435 | stat1(fp->f_inode, uap->sb); | |
d67a03eb BJ |
436 | } |
437 | ||
438 | /* | |
6459ebe0 | 439 | * Stat system call. This version follows links. |
d67a03eb BJ |
440 | */ |
441 | stat() | |
442 | { | |
443 | register struct inode *ip; | |
444 | register struct a { | |
445 | char *fname; | |
446 | struct stat *sb; | |
447 | } *uap; | |
448 | ||
449 | uap = (struct a *)u.u_ap; | |
4f083fd7 | 450 | ip = namei(uchar, LOOKUP, 1); |
e92a04af | 451 | if (ip == NULL) |
d67a03eb | 452 | return; |
a3aa7f92 | 453 | stat1(ip, uap->sb); |
d67a03eb BJ |
454 | iput(ip); |
455 | } | |
456 | ||
5485e062 | 457 | /* |
6459ebe0 | 458 | * Lstat system call. This version does not follow links. |
5485e062 BJ |
459 | */ |
460 | lstat() | |
461 | { | |
462 | register struct inode *ip; | |
463 | register struct a { | |
464 | char *fname; | |
465 | struct stat *sb; | |
466 | } *uap; | |
467 | ||
468 | uap = (struct a *)u.u_ap; | |
4f083fd7 | 469 | ip = namei(uchar, LOOKUP, 0); |
5485e062 BJ |
470 | if (ip == NULL) |
471 | return; | |
019b08c9 | 472 | stat1(ip, uap->sb); |
5485e062 BJ |
473 | iput(ip); |
474 | } | |
475 | ||
d67a03eb BJ |
476 | /* |
477 | * The basic routine for fstat and stat: | |
478 | * get the inode and pass appropriate parts back. | |
479 | */ | |
a3aa7f92 | 480 | stat1(ip, ub) |
e92a04af BJ |
481 | register struct inode *ip; |
482 | struct stat *ub; | |
d67a03eb | 483 | { |
d67a03eb BJ |
484 | struct stat ds; |
485 | ||
3fd23f5c | 486 | IUPDAT(ip, &time, &time, 0); |
d67a03eb | 487 | /* |
09c42945 | 488 | * Copy from inode table |
d67a03eb BJ |
489 | */ |
490 | ds.st_dev = ip->i_dev; | |
491 | ds.st_ino = ip->i_number; | |
492 | ds.st_mode = ip->i_mode; | |
493 | ds.st_nlink = ip->i_nlink; | |
494 | ds.st_uid = ip->i_uid; | |
495 | ds.st_gid = ip->i_gid; | |
6459ebe0 | 496 | ds.st_rdev = (dev_t)ip->i_rdev; |
a3aa7f92 | 497 | ds.st_size = ip->i_size; |
6459ebe0 | 498 | ds.st_atime = ip->i_atime; |
f9559304 | 499 | ds.st_spare1 = 0; |
6459ebe0 | 500 | ds.st_mtime = ip->i_mtime; |
f9559304 | 501 | ds.st_spare2 = 0; |
6459ebe0 | 502 | ds.st_ctime = ip->i_ctime; |
f9559304 | 503 | ds.st_spare3 = 0; |
528f664c SL |
504 | /* this doesn't belong here */ |
505 | if ((ip->i_mode&IFMT) == IFBLK) | |
506 | ds.st_blksize = BLKDEV_IOSIZE; | |
507 | else if ((ip->i_mode&IFMT) == IFCHR) | |
508 | ds.st_blksize = MAXBSIZE; | |
509 | else | |
510 | ds.st_blksize = ip->i_fs->fs_bsize; | |
2e073567 SL |
511 | ds.st_blocks = ip->i_blocks; |
512 | ds.st_spare4[0] = ds.st_spare4[1] = 0; | |
127f7d76 | 513 | u.u_error = copyout((caddr_t)&ds, (caddr_t)ub, sizeof(ds)); |
d67a03eb BJ |
514 | } |
515 | ||
516 | /* | |
5485e062 BJ |
517 | * Return target name of a symbolic link |
518 | */ | |
519 | readlink() | |
520 | { | |
521 | register struct inode *ip; | |
522 | register struct a { | |
523 | char *name; | |
524 | char *buf; | |
525 | int count; | |
31949305 BJ |
526 | } *uap = (struct a *)u.u_ap; |
527 | int resid; | |
5485e062 | 528 | |
4f083fd7 | 529 | ip = namei(uchar, LOOKUP, 0); |
5485e062 BJ |
530 | if (ip == NULL) |
531 | return; | |
532 | if ((ip->i_mode&IFMT) != IFLNK) { | |
533 | u.u_error = ENXIO; | |
534 | goto out; | |
535 | } | |
31949305 | 536 | u.u_error = rdwri(UIO_READ, ip, uap->buf, uap->count, 0, 0, &resid); |
5485e062 BJ |
537 | out: |
538 | iput(ip); | |
31949305 | 539 | u.u_r.r_val1 = uap->count - resid; |
5485e062 BJ |
540 | } |
541 | ||
4f083fd7 SL |
542 | /* |
543 | * Change mode of a file given path name. | |
544 | */ | |
3e78e260 | 545 | chmod() |
5485e062 | 546 | { |
528f664c SL |
547 | struct inode *ip; |
548 | struct a { | |
3e78e260 BJ |
549 | char *fname; |
550 | int fmode; | |
5485e062 | 551 | } *uap; |
5485e062 BJ |
552 | |
553 | uap = (struct a *)u.u_ap; | |
3e78e260 | 554 | if ((ip = owner(1)) == NULL) |
5485e062 | 555 | return; |
528f664c | 556 | chmod1(ip, uap->fmode); |
4f083fd7 | 557 | iput(ip); |
528f664c | 558 | } |
f94ceb3b | 559 | |
4f083fd7 SL |
560 | /* |
561 | * Change mode of a file given a file descriptor. | |
562 | */ | |
528f664c SL |
563 | fchmod() |
564 | { | |
565 | struct a { | |
566 | int fd; | |
567 | int fmode; | |
568 | } *uap; | |
569 | register struct inode *ip; | |
570 | register struct file *fp; | |
571 | ||
572 | uap = (struct a *)u.u_ap; | |
573 | fp = getf(uap->fd); | |
574 | if (fp == NULL) | |
575 | return; | |
576 | if (fp->f_type == DTYPE_SOCKET) { | |
577 | u.u_error = EINVAL; | |
578 | return; | |
f94ceb3b | 579 | } |
528f664c | 580 | ip = fp->f_inode; |
4f083fd7 | 581 | if (u.u_uid != ip->i_uid && !suser()) |
528f664c | 582 | return; |
4f083fd7 | 583 | ilock(ip); |
528f664c | 584 | chmod1(ip, uap->fmode); |
4f083fd7 | 585 | iunlock(ip); |
528f664c SL |
586 | } |
587 | ||
4f083fd7 SL |
588 | /* |
589 | * Change the mode on a file. | |
590 | * Inode must be locked before calling. | |
591 | */ | |
528f664c SL |
592 | chmod1(ip, mode) |
593 | register struct inode *ip; | |
594 | register int mode; | |
595 | { | |
197da11b BJ |
596 | register int *gp; |
597 | ||
3e78e260 | 598 | ip->i_mode &= ~07777; |
f94ceb3b | 599 | if (u.u_uid) { |
528f664c | 600 | mode &= ~ISVTX; |
bb1b75f4 SL |
601 | if (!groupmember(ip->i_gid)) |
602 | mode &= ~ISGID; | |
f94ceb3b | 603 | } |
528f664c | 604 | ip->i_mode |= mode&07777; |
3e78e260 BJ |
605 | ip->i_flag |= ICHG; |
606 | if (ip->i_flag&ITEXT && (ip->i_mode&ISVTX)==0) | |
607 | xrele(ip); | |
5485e062 BJ |
608 | } |
609 | ||
4f083fd7 SL |
610 | /* |
611 | * Set ownership given a path name. | |
612 | */ | |
3e78e260 | 613 | chown() |
d67a03eb | 614 | { |
528f664c SL |
615 | struct inode *ip; |
616 | struct a { | |
3e78e260 BJ |
617 | char *fname; |
618 | int uid; | |
619 | int gid; | |
d67a03eb | 620 | } *uap; |
d67a03eb BJ |
621 | |
622 | uap = (struct a *)u.u_ap; | |
aad8ef38 | 623 | if (!suser() || (ip = owner(0)) == NULL) |
d67a03eb | 624 | return; |
bb1b75f4 | 625 | u.u_error = chown1(ip, uap->uid, uap->gid); |
4f083fd7 | 626 | iput(ip); |
528f664c | 627 | } |
f94ceb3b | 628 | |
4f083fd7 SL |
629 | /* |
630 | * Set ownership given a file descriptor. | |
631 | */ | |
528f664c SL |
632 | fchown() |
633 | { | |
634 | struct a { | |
635 | int fd; | |
636 | int uid; | |
637 | int gid; | |
638 | } *uap; | |
639 | register struct inode *ip; | |
640 | register struct file *fp; | |
641 | ||
642 | uap = (struct a *)u.u_ap; | |
643 | fp = getf(uap->fd); | |
644 | if (fp == NULL) | |
645 | return; | |
646 | if (fp->f_type == DTYPE_SOCKET) { | |
647 | u.u_error = EINVAL; | |
648 | return; | |
f94ceb3b | 649 | } |
528f664c | 650 | ip = fp->f_inode; |
aad8ef38 | 651 | if (!suser()) |
528f664c | 652 | return; |
4f083fd7 | 653 | ilock(ip); |
bb1b75f4 | 654 | u.u_error = chown1(ip, uap->uid, uap->gid); |
4f083fd7 | 655 | iunlock(ip); |
528f664c SL |
656 | } |
657 | ||
658 | /* | |
659 | * Perform chown operation on inode ip; | |
660 | * inode must be locked prior to call. | |
661 | */ | |
662 | chown1(ip, uid, gid) | |
663 | register struct inode *ip; | |
664 | int uid, gid; | |
665 | { | |
666 | #ifdef QUOTA | |
667 | register long change; | |
bb1b75f4 | 668 | #endif |
528f664c | 669 | |
bb1b75f4 SL |
670 | if (uid == -1) |
671 | uid = ip->i_uid; | |
672 | if (gid == -1) | |
673 | gid = ip->i_gid; | |
bb1b75f4 | 674 | #ifdef QUOTA |
2e073567 | 675 | if (ip->i_uid != uid) /* this just speeds things a little */ |
0a77f278 | 676 | change = 0; |
2e073567 SL |
677 | else |
678 | change = ip->i_blocks; | |
679 | (void) chkdq(ip, -change, 1); | |
680 | (void) chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
0a77f278 | 681 | dqrele(ip->i_dquot); |
f94ceb3b | 682 | #endif |
bb1b75f4 SL |
683 | ip->i_uid = uid; |
684 | ip->i_gid = gid; | |
3e78e260 BJ |
685 | ip->i_flag |= ICHG; |
686 | if (u.u_ruid != 0) | |
687 | ip->i_mode &= ~(ISUID|ISGID); | |
528f664c | 688 | #ifdef QUOTA |
0a77f278 | 689 | ip->i_dquot = inoquota(ip); |
2e073567 SL |
690 | (void) chkdq(ip, change, 1); |
691 | (void) chkiq(ip->i_dev, (struct inode *)NULL, uid, 1); | |
692 | return (u.u_error); /* should == 0 ALWAYS !! */ | |
693 | #else | |
bb1b75f4 | 694 | return (0); |
2e073567 | 695 | #endif |
d67a03eb BJ |
696 | } |
697 | ||
bb1b75f4 | 698 | #ifndef NOCOMPAT |
d67a03eb | 699 | /* |
3e78e260 BJ |
700 | * Set IUPD and IACC times on file. |
701 | * Can't set ICHG. | |
d67a03eb | 702 | */ |
9702e942 | 703 | outime() |
e92a04af | 704 | { |
d67a03eb | 705 | register struct a { |
3e78e260 BJ |
706 | char *fname; |
707 | time_t *tptr; | |
bb1b75f4 | 708 | } *uap = (struct a *)u.u_ap; |
3e78e260 BJ |
709 | register struct inode *ip; |
710 | time_t tv[2]; | |
b32450f4 | 711 | struct timeval tv0, tv1; |
d67a03eb | 712 | |
3e78e260 | 713 | if ((ip = owner(1)) == NULL) |
d67a03eb | 714 | return; |
bb1b75f4 | 715 | u.u_error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv)); |
127f7d76 | 716 | if (u.u_error == 0) { |
3e78e260 | 717 | ip->i_flag |= IACC|IUPD|ICHG; |
b32450f4 BJ |
718 | tv0.tv_sec = tv[0]; tv0.tv_usec = 0; |
719 | tv1.tv_sec = tv[1]; tv1.tv_usec = 0; | |
720 | iupdat(ip, &tv0, &tv1, 0); | |
d67a03eb | 721 | } |
d67a03eb BJ |
722 | iput(ip); |
723 | } | |
bb1b75f4 SL |
724 | #endif |
725 | ||
726 | utimes() | |
727 | { | |
728 | register struct a { | |
729 | char *fname; | |
730 | struct timeval *tptr; | |
731 | } *uap = (struct a *)u.u_ap; | |
732 | register struct inode *ip; | |
733 | struct timeval tv[2]; | |
734 | ||
735 | if ((ip = owner(1)) == NULL) | |
736 | return; | |
737 | u.u_error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv)); | |
738 | if (u.u_error == 0) { | |
739 | ip->i_flag |= IACC|IUPD|ICHG; | |
740 | iupdat(ip, &tv[0], &tv[1], 0); | |
741 | } | |
742 | iput(ip); | |
743 | } | |
d67a03eb | 744 | |
4f083fd7 SL |
745 | /* |
746 | * Flush any pending I/O. | |
747 | */ | |
3e78e260 | 748 | sync() |
d67a03eb | 749 | { |
d67a03eb | 750 | |
3fd23f5c | 751 | update(); |
d67a03eb | 752 | } |
64d3a787 | 753 | |
4f083fd7 SL |
754 | /* |
755 | * Apply an advisory lock on a file descriptor. | |
756 | */ | |
528f664c SL |
757 | flock() |
758 | { | |
759 | struct a { | |
760 | int fd; | |
761 | int how; | |
762 | } *uap; | |
763 | register struct file *fp; | |
764 | register int cmd, flags; | |
765 | ||
766 | uap = (struct a *)u.u_ap; | |
767 | fp = getf(uap->fd); | |
768 | if (fp == NULL) | |
769 | return; | |
770 | if (fp->f_type == DTYPE_SOCKET) { /* XXX */ | |
771 | u.u_error = EINVAL; | |
772 | return; | |
773 | } | |
774 | cmd = uap->how; | |
3650c37d | 775 | flags = u.u_pofile[uap->fd] & (UF_SHLOCK|UF_EXLOCK); |
528f664c SL |
776 | if (cmd&FUNLOCK) { |
777 | if (flags == 0) { | |
778 | u.u_error = EINVAL; | |
779 | return; | |
780 | } | |
781 | funlocki(fp->f_inode, flags); | |
3650c37d | 782 | u.u_pofile[uap->fd] &= ~(UF_SHLOCK|UF_EXLOCK); |
528f664c SL |
783 | return; |
784 | } | |
785 | /* | |
786 | * No reason to write lock a file we've already | |
787 | * write locked, similarly with a read lock. | |
788 | */ | |
3650c37d SL |
789 | if ((flags&UF_EXLOCK) && (cmd&FEXLOCK) || |
790 | (flags&UF_SHLOCK) && (cmd&FSHLOCK)) | |
528f664c SL |
791 | return; |
792 | u.u_pofile[uap->fd] = flocki(fp->f_inode, u.u_pofile[uap->fd], cmd); | |
793 | } | |
794 | ||
4f083fd7 SL |
795 | /* |
796 | * Truncate a file given its path name. | |
797 | */ | |
528f664c SL |
798 | truncate() |
799 | { | |
800 | struct a { | |
801 | char *fname; | |
4f083fd7 | 802 | u_long length; |
31949305 | 803 | } *uap = (struct a *)u.u_ap; |
528f664c SL |
804 | struct inode *ip; |
805 | ||
4f083fd7 | 806 | ip = namei(uchar, LOOKUP, 1); |
528f664c SL |
807 | if (ip == NULL) |
808 | return; | |
809 | if (access(ip, IWRITE)) | |
810 | goto bad; | |
811 | if ((ip->i_mode&IFMT) == IFDIR) { | |
812 | u.u_error = EISDIR; | |
813 | goto bad; | |
814 | } | |
815 | itrunc(ip, uap->length); | |
528f664c SL |
816 | bad: |
817 | iput(ip); | |
818 | } | |
819 | ||
4f083fd7 SL |
820 | /* |
821 | * Truncate a file given a file descriptor. | |
822 | */ | |
528f664c SL |
823 | ftruncate() |
824 | { | |
825 | struct a { | |
826 | int fd; | |
4f083fd7 | 827 | u_long length; |
31949305 | 828 | } *uap = (struct a *)u.u_ap; |
528f664c SL |
829 | struct inode *ip; |
830 | struct file *fp; | |
831 | ||
832 | fp = getf(uap->fd); | |
833 | if (fp == NULL) | |
834 | return; | |
835 | if (fp->f_type == DTYPE_SOCKET) { | |
836 | u.u_error = EINVAL; | |
837 | return; | |
838 | } | |
839 | if ((fp->f_flag&FWRITE) == 0) { | |
840 | u.u_error = EINVAL; | |
841 | return; | |
842 | } | |
843 | ip = fp->f_inode; | |
844 | ilock(ip); | |
845 | itrunc(ip, uap->length); | |
4f083fd7 SL |
846 | iunlock(ip); |
847 | } | |
848 | ||
849 | /* | |
850 | * Synch an open file. | |
851 | */ | |
852 | fsync() | |
853 | { | |
854 | struct a { | |
855 | int fd; | |
856 | } *uap = (struct a *)u.u_ap; | |
857 | struct inode *ip; | |
858 | struct file *fp; | |
859 | ||
860 | fp = getf(uap->fd); | |
861 | if (fp == NULL) | |
862 | return; | |
863 | if (fp->f_type == DTYPE_SOCKET) { | |
864 | u.u_error = EINVAL; | |
865 | return; | |
866 | } | |
867 | ip = fp->f_inode; | |
868 | ilock(ip); | |
869 | syncip(ip); | |
870 | iunlock(ip); | |
528f664c SL |
871 | } |
872 | ||
4f083fd7 SL |
873 | /* |
874 | * Rename system call. | |
875 | * rename("foo", "bar"); | |
876 | * is essentially | |
877 | * unlink("bar"); | |
878 | * link("foo", "bar"); | |
879 | * unlink("foo"); | |
880 | * but ``atomically''. Can't do full commit without saving state in the | |
881 | * inode on disk which isn't feasible at this time. Best we can do is | |
882 | * always guarantee the target exists. | |
883 | * | |
884 | * Basic algorithm is: | |
885 | * | |
886 | * 1) Bump link count on source while we're linking it to the | |
887 | * target. This also insure the inode won't be deleted out | |
888 | * from underneath us while we work. | |
889 | * 2) Link source to destination. If destination already exists, | |
890 | * delete it first. | |
891 | * 3) Unlink source reference to inode if still around. | |
892 | * 4) If a directory was moved and the parent of the destination | |
893 | * is different from the source, patch the ".." entry in the | |
894 | * directory. | |
895 | * | |
896 | * Source and destination must either both be directories, or both | |
897 | * not be directories. If target is a directory, it must be empty. | |
898 | */ | |
528f664c SL |
899 | rename() |
900 | { | |
901 | struct a { | |
902 | char *from; | |
903 | char *to; | |
904 | } *uap; | |
4f083fd7 SL |
905 | register struct inode *ip, *xp, *dp; |
906 | int oldparent, parentdifferent, doingdirectory; | |
a5390dce | 907 | int error = 0; |
4f083fd7 SL |
908 | |
909 | uap = (struct a *)u.u_ap; | |
046f18d1 | 910 | ip = namei(uchar, DELETE | LOCKPARENT, 0); |
4f083fd7 SL |
911 | if (ip == NULL) |
912 | return; | |
913 | dp = u.u_pdir; | |
914 | oldparent = 0, doingdirectory = 0; | |
915 | if ((ip->i_mode&IFMT) == IFDIR) { | |
916 | register struct direct *d; | |
917 | ||
918 | d = &u.u_dent; | |
919 | /* | |
046f18d1 | 920 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 921 | */ |
046f18d1 SL |
922 | if ((d->d_namlen == 1 && d->d_name[0] == '.') || |
923 | (d->d_namlen == 2 && bcmp(d->d_name, "..", 2) == 0) || | |
924 | (dp == ip)) { | |
925 | iput(dp); | |
926 | if (dp == ip) | |
927 | irele(ip); | |
928 | else | |
4f083fd7 | 929 | iput(ip); |
046f18d1 SL |
930 | u.u_error = EINVAL; |
931 | return; | |
4f083fd7 SL |
932 | } |
933 | oldparent = dp->i_number; | |
934 | doingdirectory++; | |
935 | } | |
046f18d1 | 936 | iput(dp); |
4f083fd7 SL |
937 | |
938 | /* | |
939 | * 1) Bump link count while we're moving stuff | |
940 | * around. If we crash somewhere before | |
941 | * completing our work, the link count | |
942 | * may be wrong, but correctable. | |
943 | */ | |
944 | ip->i_nlink++; | |
945 | ip->i_flag |= ICHG; | |
946 | iupdat(ip, &time, &time, 1); | |
947 | iunlock(ip); | |
948 | ||
949 | /* | |
950 | * When the target exists, both the directory | |
951 | * and target inodes are returned locked. | |
952 | */ | |
953 | u.u_dirp = (caddr_t)uap->to; | |
954 | xp = namei(uchar, CREATE | LOCKPARENT, 0); | |
a5390dce SL |
955 | if (u.u_error) { |
956 | error = u.u_error; | |
4f083fd7 | 957 | goto out; |
a5390dce | 958 | } |
4f083fd7 | 959 | dp = u.u_pdir; |
046f18d1 SL |
960 | /* |
961 | * If ".." must be changed (ie the directory gets a new | |
962 | * parent) then the user must have write permission. | |
963 | */ | |
964 | parentdifferent = oldparent != dp->i_number; | |
5463e92b | 965 | if (doingdirectory && parentdifferent && access(ip, IWRITE)) |
046f18d1 | 966 | goto bad; |
4f083fd7 SL |
967 | /* |
968 | * 2) If target doesn't exist, link the target | |
969 | * to the source and unlink the source. | |
970 | * Otherwise, rewrite the target directory | |
971 | * entry to reference the source inode and | |
972 | * expunge the original entry's existence. | |
973 | */ | |
4f083fd7 SL |
974 | if (xp == NULL) { |
975 | if (dp->i_dev != ip->i_dev) { | |
a5390dce | 976 | error = EXDEV; |
4f083fd7 SL |
977 | goto bad; |
978 | } | |
e69c3c9c SL |
979 | /* |
980 | * Disallow rename(foo, foo/bar). | |
981 | */ | |
982 | if (dp->i_number == ip->i_number) { | |
983 | error = EEXIST; | |
984 | goto bad; | |
985 | } | |
4f083fd7 SL |
986 | /* |
987 | * Account for ".." in directory. | |
988 | * When source and destination have the | |
989 | * same parent we don't fool with the | |
990 | * link count -- this isn't required | |
991 | * because we do a similar check below. | |
992 | */ | |
993 | if (doingdirectory && parentdifferent) { | |
994 | dp->i_nlink++; | |
995 | dp->i_flag |= ICHG; | |
996 | iupdat(dp, &time, &time, 1); | |
997 | } | |
f2a5ad78 SL |
998 | error = direnter(ip); |
999 | if (error) | |
4f083fd7 SL |
1000 | goto out; |
1001 | } else { | |
1002 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) { | |
a5390dce | 1003 | error = EXDEV; |
4f083fd7 SL |
1004 | goto bad; |
1005 | } | |
e69c3c9c SL |
1006 | /* |
1007 | * Short circuit rename(foo, foo). | |
1008 | */ | |
1009 | if (xp->i_number == ip->i_number) | |
1010 | goto bad; | |
4f083fd7 | 1011 | /* |
a5390dce SL |
1012 | * Target must be empty if a directory |
1013 | * and have no links to it. | |
4f083fd7 SL |
1014 | * Also, insure source and target are |
1015 | * compatible (both directories, or both | |
1016 | * not directories). | |
1017 | */ | |
1018 | if ((xp->i_mode&IFMT) == IFDIR) { | |
a5390dce SL |
1019 | if (!dirempty(xp) || xp->i_nlink > 2) { |
1020 | error = ENOTEMPTY; | |
4f083fd7 SL |
1021 | goto bad; |
1022 | } | |
1023 | if (!doingdirectory) { | |
a5390dce | 1024 | error = ENOTDIR; |
4f083fd7 SL |
1025 | goto bad; |
1026 | } | |
1027 | } else if (doingdirectory) { | |
a5390dce | 1028 | error = EISDIR; |
4f083fd7 SL |
1029 | goto bad; |
1030 | } | |
1031 | dirrewrite(dp, ip); | |
a5390dce SL |
1032 | if (u.u_error) { |
1033 | error = u.u_error; | |
4f083fd7 | 1034 | goto bad1; |
a5390dce | 1035 | } |
4f083fd7 | 1036 | /* |
a5390dce SL |
1037 | * Adjust the link count of the target to |
1038 | * reflect the dirrewrite above. If this is | |
1039 | * a directory it is empty and there are | |
1040 | * no links to it, so we can squash the inode and | |
1041 | * any space associated with it. We disallowed | |
1042 | * renaming over top of a directory with links to | |
1043 | * it above, as we've no way to determine if | |
1044 | * we've got a link or the directory itself, and | |
1045 | * if we get a link, then ".." will be screwed up. | |
4f083fd7 | 1046 | */ |
a5390dce | 1047 | xp->i_nlink--; |
4f083fd7 | 1048 | if (doingdirectory) { |
a5390dce SL |
1049 | if (--xp->i_nlink != 0) |
1050 | panic("rename: linked directory"); | |
4f083fd7 | 1051 | itrunc(xp, (u_long)0); |
a5390dce | 1052 | } |
4f083fd7 SL |
1053 | xp->i_flag |= ICHG; |
1054 | iput(xp); | |
31db12cb | 1055 | xp = NULL; |
4f083fd7 SL |
1056 | } |
1057 | ||
1058 | /* | |
1059 | * 3) Unlink the source. | |
1060 | */ | |
1061 | u.u_dirp = uap->from; | |
1062 | dp = namei(uchar, DELETE, 0); | |
1063 | /* | |
1064 | * Insure directory entry still exists and | |
1065 | * has not changed since the start of all | |
1066 | * this. If either has occured, forget about | |
1067 | * about deleting the original entry and just | |
1068 | * adjust the link count in the inode. | |
1069 | */ | |
1070 | if (dp == NULL || u.u_dent.d_ino != ip->i_number) { | |
1071 | ip->i_nlink--; | |
1072 | ip->i_flag |= ICHG; | |
1073 | } else { | |
1074 | /* | |
1075 | * If source is a directory, must adjust | |
1076 | * link count of parent directory also. | |
1077 | * If target didn't exist and source and | |
1078 | * target have the same parent, then we | |
1079 | * needn't touch the link count, it all | |
1080 | * balances out in the end. Otherwise, we | |
1081 | * must do so to reflect deletion of ".." | |
1082 | * done above. | |
1083 | */ | |
1084 | if (doingdirectory && (xp != NULL || parentdifferent)) { | |
1085 | dp->i_nlink--; | |
1086 | dp->i_flag |= ICHG; | |
1087 | } | |
1088 | if (dirremove()) { | |
1089 | ip->i_nlink--; | |
1090 | ip->i_flag |= ICHG; | |
1091 | } | |
a5390dce SL |
1092 | if (error == 0) /* conservative */ |
1093 | error = u.u_error; | |
4f083fd7 SL |
1094 | } |
1095 | irele(ip); | |
1096 | if (dp) | |
1097 | iput(dp); | |
1098 | ||
1099 | /* | |
1100 | * 4) Renaming a directory with the parent | |
1101 | * different requires ".." to be rewritten. | |
1102 | * The window is still there for ".." to | |
1103 | * be inconsistent, but this is unavoidable, | |
1104 | * and a lot shorter than when it was done | |
1105 | * in a user process. | |
1106 | */ | |
a5390dce | 1107 | if (doingdirectory && parentdifferent && error == 0) { |
4f083fd7 | 1108 | struct dirtemplate dirbuf; |
528f664c | 1109 | |
4f083fd7 SL |
1110 | u.u_dirp = uap->to; |
1111 | ip = namei(uchar, LOOKUP | LOCKPARENT, 0); | |
1112 | if (ip == NULL) { | |
1113 | printf("rename: .. went away\n"); | |
1114 | return; | |
1115 | } | |
1116 | dp = u.u_pdir; | |
1117 | if ((ip->i_mode&IFMT) != IFDIR) { | |
1118 | printf("rename: .. not a directory\n"); | |
1119 | goto stuck; | |
1120 | } | |
a5390dce | 1121 | error = rdwri(UIO_READ, ip, (caddr_t)&dirbuf, |
4f083fd7 | 1122 | sizeof (struct dirtemplate), (off_t)0, 1, (int *)0); |
a5390dce | 1123 | if (error == 0) { |
4f083fd7 SL |
1124 | dirbuf.dotdot_ino = dp->i_number; |
1125 | (void) rdwri(UIO_WRITE, ip, (caddr_t)&dirbuf, | |
1126 | sizeof (struct dirtemplate), (off_t)0, 1, (int *)0); | |
1127 | } | |
1128 | stuck: | |
1129 | irele(dp); | |
1130 | iput(ip); | |
1131 | } | |
a5390dce SL |
1132 | goto done; |
1133 | ||
4f083fd7 | 1134 | bad: |
31db12cb | 1135 | iput(dp); |
4f083fd7 SL |
1136 | bad1: |
1137 | if (xp) | |
31db12cb | 1138 | iput(xp); |
4f083fd7 SL |
1139 | out: |
1140 | ip->i_nlink--; | |
1141 | ip->i_flag |= ICHG; | |
1142 | irele(ip); | |
a5390dce SL |
1143 | done: |
1144 | if (error) | |
1145 | u.u_error = error; | |
528f664c SL |
1146 | } |
1147 | ||
64d3a787 BJ |
1148 | /* |
1149 | * Make a new file. | |
1150 | */ | |
1151 | struct inode * | |
1152 | maknode(mode) | |
1153 | int mode; | |
1154 | { | |
1155 | register struct inode *ip; | |
1156 | ino_t ipref; | |
1157 | ||
1158 | if ((mode & IFMT) == IFDIR) | |
1159 | ipref = dirpref(u.u_pdir->i_fs); | |
1160 | else | |
1161 | ipref = u.u_pdir->i_number; | |
1162 | ip = ialloc(u.u_pdir, ipref, mode); | |
1163 | if (ip == NULL) { | |
1164 | iput(u.u_pdir); | |
528f664c | 1165 | return (NULL); |
64d3a787 | 1166 | } |
528f664c | 1167 | #ifdef QUOTA |
64d3a787 BJ |
1168 | if (ip->i_dquot != NODQUOT) |
1169 | panic("maknode: dquot"); | |
1170 | #endif | |
1171 | ip->i_flag |= IACC|IUPD|ICHG; | |
1172 | if ((mode & IFMT) == 0) | |
1173 | mode |= IFREG; | |
1174 | ip->i_mode = mode & ~u.u_cmask; | |
1175 | ip->i_nlink = 1; | |
1176 | ip->i_uid = u.u_uid; | |
1177 | ip->i_gid = u.u_pdir->i_gid; | |
bb1b75f4 SL |
1178 | if (ip->i_mode & ISGID && !groupmember(ip->i_gid)) |
1179 | ip->i_mode &= ~ISGID; | |
528f664c | 1180 | #ifdef QUOTA |
64d3a787 BJ |
1181 | ip->i_dquot = inoquota(ip); |
1182 | #endif | |
1183 | ||
1184 | /* | |
1185 | * Make sure inode goes to disk before directory entry. | |
1186 | */ | |
3fd23f5c | 1187 | iupdat(ip, &time, &time, 1); |
f2a5ad78 | 1188 | u.u_error = direnter(ip); |
64d3a787 BJ |
1189 | if (u.u_error) { |
1190 | /* | |
f2a5ad78 SL |
1191 | * Write error occurred trying to update directory |
1192 | * so must deallocate the inode. | |
64d3a787 BJ |
1193 | */ |
1194 | ip->i_nlink = 0; | |
1195 | ip->i_flag |= ICHG; | |
1196 | iput(ip); | |
528f664c | 1197 | return (NULL); |
64d3a787 | 1198 | } |
528f664c | 1199 | return (ip); |
64d3a787 | 1200 | } |