Commit | Line | Data |
---|---|---|
4147b3f6 | 1 | /* lfs_vnops.c 4.30 82/07/24 */ |
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" | |
d67a03eb | 7 | #include "../h/file.h" |
6459ebe0 | 8 | #include "../h/stat.h" |
3e78e260 | 9 | #include "../h/inode.h" |
6459ebe0 | 10 | #include "../h/fs.h" |
3e78e260 | 11 | #include "../h/buf.h" |
3e78e260 | 12 | #include "../h/proc.h" |
0737b714 | 13 | #include "../h/inline.h" |
f94ceb3b BJ |
14 | #ifdef EFS |
15 | #include "../net/in.h" | |
16 | #include "../h/efs.h" | |
17 | #endif | |
0a77f278 | 18 | #include "../h/quota.h" |
4147b3f6 | 19 | #include "../h/descrip.h" |
3e78e260 BJ |
20 | |
21 | chdir() | |
22 | { | |
23 | ||
24 | chdirec(&u.u_cdir); | |
25 | } | |
26 | ||
27 | chroot() | |
28 | { | |
29 | ||
30 | if (suser()) | |
31 | chdirec(&u.u_rdir); | |
32 | } | |
33 | ||
34 | chdirec(ipp) | |
35 | register struct inode **ipp; | |
36 | { | |
37 | register struct inode *ip; | |
38 | struct a { | |
39 | char *fname; | |
40 | }; | |
41 | ||
42 | ip = namei(uchar, 0, 1); | |
43 | if(ip == NULL) | |
44 | return; | |
45 | if((ip->i_mode&IFMT) != IFDIR) { | |
46 | u.u_error = ENOTDIR; | |
47 | goto bad; | |
48 | } | |
49 | if(access(ip, IEXEC)) | |
50 | goto bad; | |
ca91bded | 51 | iunlock(ip); |
8eee8525 KM |
52 | if (*ipp) |
53 | irele(*ipp); | |
3e78e260 BJ |
54 | *ipp = ip; |
55 | return; | |
56 | ||
57 | bad: | |
58 | iput(ip); | |
59 | } | |
60 | ||
61 | /* | |
62 | * Open system call. | |
63 | */ | |
64 | open() | |
65 | { | |
66 | register struct inode *ip; | |
67 | register struct a { | |
68 | char *fname; | |
69 | int rwmode; | |
70 | } *uap; | |
71 | ||
72 | uap = (struct a *)u.u_ap; | |
73 | ip = namei(uchar, 0, 1); | |
74 | if (ip == NULL) | |
75 | return; | |
76 | open1(ip, ++uap->rwmode, 0); | |
77 | } | |
78 | ||
79 | /* | |
80 | * Creat system call. | |
81 | */ | |
4147b3f6 | 82 | ocreat() |
3e78e260 BJ |
83 | { |
84 | register struct inode *ip; | |
85 | register struct a { | |
86 | char *fname; | |
87 | int fmode; | |
88 | } *uap; | |
89 | ||
90 | uap = (struct a *)u.u_ap; | |
91 | ip = namei(uchar, 1, 1); | |
92 | if (ip == NULL) { | |
93 | if (u.u_error) | |
94 | return; | |
95 | ip = maknode(uap->fmode&07777&(~ISVTX)); | |
96 | if (ip==NULL) | |
97 | return; | |
98 | open1(ip, FWRITE, 2); | |
99 | } else | |
100 | open1(ip, FWRITE, 1); | |
101 | } | |
102 | ||
103 | /* | |
104 | * Common code for open and creat. | |
105 | * Check permissions, allocate an open file structure, | |
106 | * and call the device open routine if any. | |
107 | */ | |
108 | open1(ip, mode, trf) | |
109 | register struct inode *ip; | |
110 | register mode; | |
111 | { | |
112 | register struct file *fp; | |
113 | int i; | |
114 | ||
115 | if (trf != 2) { | |
116 | if (mode&FREAD) | |
117 | (void) access(ip, IREAD); | |
118 | if (mode&FWRITE) { | |
119 | (void) access(ip, IWRITE); | |
120 | if ((ip->i_mode&IFMT) == IFDIR) | |
121 | u.u_error = EISDIR; | |
122 | } | |
123 | } | |
8eee8525 KM |
124 | if (u.u_error) { |
125 | iput(ip); | |
126 | return; | |
127 | } | |
3e78e260 BJ |
128 | if (trf == 1) |
129 | itrunc(ip); | |
ca91bded | 130 | iunlock(ip); |
3e78e260 BJ |
131 | if ((fp = falloc()) == NULL) |
132 | goto out; | |
133 | fp->f_flag = mode&(FREAD|FWRITE); | |
4147b3f6 | 134 | fp->f_type = DTYPE_FILE; |
3e78e260 BJ |
135 | i = u.u_r.r_val1; |
136 | fp->f_inode = ip; | |
f94ceb3b BJ |
137 | #ifdef EFS |
138 | openi(ip, mode&(FREAD|FWRITE), trf); | |
139 | #else | |
3e78e260 | 140 | openi(ip, mode&(FREAD|FWRITE)); |
f94ceb3b | 141 | #endif |
3e78e260 BJ |
142 | if (u.u_error == 0) |
143 | return; | |
144 | u.u_ofile[i] = NULL; | |
145 | fp->f_count--; | |
146 | out: | |
8eee8525 | 147 | irele(ip); |
3e78e260 BJ |
148 | } |
149 | ||
150 | /* | |
151 | * Mknod system call | |
152 | */ | |
153 | mknod() | |
154 | { | |
155 | register struct inode *ip; | |
156 | register struct a { | |
157 | char *fname; | |
158 | int fmode; | |
159 | int dev; | |
160 | } *uap; | |
161 | ||
162 | uap = (struct a *)u.u_ap; | |
163 | if (suser()) { | |
164 | ip = namei(uchar, 1, 0); | |
165 | if (ip != NULL) { | |
166 | u.u_error = EEXIST; | |
167 | goto out; | |
168 | } | |
169 | } | |
170 | if (u.u_error) | |
171 | return; | |
172 | ip = maknode(uap->fmode); | |
173 | if (ip == NULL) | |
174 | return; | |
175 | if (uap->dev) { | |
176 | /* | |
177 | * Want to be able to use this to make badblock | |
178 | * inodes, so don't truncate the dev number. | |
179 | */ | |
6459ebe0 | 180 | ip->i_rdev = uap->dev; |
3e78e260 BJ |
181 | ip->i_flag |= IACC|IUPD|ICHG; |
182 | } | |
183 | ||
184 | out: | |
185 | iput(ip); | |
186 | } | |
187 | ||
188 | /* | |
189 | * link system call | |
190 | */ | |
191 | link() | |
192 | { | |
193 | register struct inode *ip, *xp; | |
194 | register struct a { | |
195 | char *target; | |
196 | char *linkname; | |
197 | } *uap; | |
198 | ||
199 | uap = (struct a *)u.u_ap; | |
200 | ip = namei(uchar, 0, 1); /* well, this routine is doomed anyhow */ | |
201 | if (ip == NULL) | |
202 | return; | |
f94ceb3b BJ |
203 | if ((ip->i_mode&IFMT)==IFDIR && !suser()) { |
204 | iput(ip); | |
205 | return; | |
206 | } | |
3e78e260 BJ |
207 | ip->i_nlink++; |
208 | ip->i_flag |= ICHG; | |
209 | iupdat(ip, &time, &time, 1); | |
ca91bded | 210 | iunlock(ip); |
3e78e260 BJ |
211 | u.u_dirp = (caddr_t)uap->linkname; |
212 | xp = namei(uchar, 1, 0); | |
213 | if (xp != NULL) { | |
214 | u.u_error = EEXIST; | |
215 | iput(xp); | |
216 | goto out; | |
217 | } | |
218 | if (u.u_error) | |
219 | goto out; | |
220 | if (u.u_pdir->i_dev != ip->i_dev) { | |
221 | iput(u.u_pdir); | |
222 | u.u_error = EXDEV; | |
223 | goto out; | |
224 | } | |
225 | wdir(ip); | |
226 | out: | |
227 | if (u.u_error) { | |
228 | ip->i_nlink--; | |
229 | ip->i_flag |= ICHG; | |
230 | } | |
231 | out1: | |
8eee8525 | 232 | irele(ip); |
3e78e260 BJ |
233 | } |
234 | ||
235 | /* | |
236 | * symlink -- make a symbolic link | |
237 | */ | |
238 | symlink() | |
239 | { | |
240 | register struct a { | |
241 | char *target; | |
242 | char *linkname; | |
243 | } *uap; | |
244 | register struct inode *ip; | |
245 | register char *tp; | |
246 | register c, nc; | |
247 | ||
248 | uap = (struct a *)u.u_ap; | |
249 | tp = uap->target; | |
250 | nc = 0; | |
251 | while (c = fubyte(tp)) { | |
252 | if (c < 0) { | |
253 | u.u_error = EFAULT; | |
254 | return; | |
255 | } | |
256 | tp++; | |
257 | nc++; | |
258 | } | |
259 | u.u_dirp = uap->linkname; | |
260 | ip = namei(uchar, 1, 0); | |
261 | if (ip) { | |
262 | iput(ip); | |
263 | u.u_error = EEXIST; | |
264 | return; | |
265 | } | |
266 | if (u.u_error) | |
267 | return; | |
268 | ip = maknode(IFLNK | 0777); | |
269 | if (ip == NULL) | |
270 | return; | |
271 | u.u_base = uap->target; | |
272 | u.u_count = nc; | |
273 | u.u_offset = 0; | |
274 | u.u_segflg = 0; | |
275 | writei(ip); | |
276 | iput(ip); | |
277 | } | |
278 | ||
279 | /* | |
280 | * Unlink system call. | |
281 | * Hard to avoid races here, especially | |
282 | * in unlinking directories. | |
283 | */ | |
284 | unlink() | |
285 | { | |
286 | register struct inode *ip, *pp; | |
287 | struct a { | |
288 | char *fname; | |
289 | }; | |
6459ebe0 KM |
290 | struct fs *fs; |
291 | struct buf *bp; | |
292 | int lbn, bn, base; | |
8eee8525 | 293 | int unlinkingdot = 0; |
3e78e260 BJ |
294 | |
295 | pp = namei(uchar, 2, 0); | |
296 | if(pp == NULL) | |
297 | return; | |
f94ceb3b BJ |
298 | #ifdef EFS |
299 | /* divert to extended file system if off machine. */ | |
300 | if (efsinode(pp)) { | |
301 | dev_t ndev = pp->i_rdev; | |
302 | ||
303 | iput(pp); /* avoid recursive hang on inode */ | |
304 | efsunlink(ndev); | |
305 | if (u.u_error != EEXIST) | |
306 | return; | |
307 | ||
308 | /* | |
309 | * If a null pathname remainder, then do | |
310 | * the unlink locally after restoring state. | |
311 | */ | |
312 | u.u_error = 0; | |
313 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
314 | pp = namei(uchar, 2, 0); | |
315 | } | |
316 | #endif | |
317 | ||
3e78e260 BJ |
318 | /* |
319 | * Check for unlink(".") | |
320 | * to avoid hanging on the iget | |
321 | */ | |
322 | if (pp->i_number == u.u_dent.d_ino) { | |
323 | ip = pp; | |
324 | ip->i_count++; | |
8eee8525 | 325 | unlinkingdot++; |
3e78e260 | 326 | } else |
6459ebe0 | 327 | ip = iget(pp->i_dev, pp->i_fs, u.u_dent.d_ino); |
3e78e260 BJ |
328 | if(ip == NULL) |
329 | goto out1; | |
330 | if((ip->i_mode&IFMT)==IFDIR && !suser()) | |
331 | goto out; | |
332 | /* | |
333 | * Don't unlink a mounted file. | |
334 | */ | |
335 | if (ip->i_dev != pp->i_dev) { | |
336 | u.u_error = EBUSY; | |
337 | goto out; | |
338 | } | |
339 | if (ip->i_flag&ITEXT) | |
340 | xrele(ip); /* try once to free text */ | |
341 | /* | |
342 | if ((ip->i_flag&ITEXT) && ip->i_nlink==1) { | |
343 | u.u_error = ETXTBSY; | |
344 | goto out; | |
345 | } | |
346 | */ | |
6459ebe0 KM |
347 | if (u.u_count == 0) { |
348 | /* | |
349 | * first entry in block, so set d_ino to zero. | |
350 | */ | |
4147b3f6 BJ |
351 | /*ZZ*/if(u.u_offset&0x1ff)printf("missed dir compact dir %s/%d off %d file %s\n" |
352 | /*ZZ*/,pp->i_fs->fs_fsmnt,pp->i_number,u.u_offset,u.u_dent.d_name); | |
6459ebe0 KM |
353 | u.u_base = (caddr_t)&u.u_dent; |
354 | u.u_count = DIRSIZ(&u.u_dent); | |
355 | u.u_dent.d_ino = 0; | |
356 | writei(pp); | |
357 | } else { | |
358 | /* | |
359 | * updating preceeding entry to skip over current entry. | |
360 | */ | |
361 | fs = pp->i_fs; | |
362 | lbn = lblkno(fs, u.u_offset); | |
363 | base = blkoff(fs, u.u_offset); | |
364 | bn = fsbtodb(fs, bmap(pp, lbn, B_WRITE, base + u.u_count)); | |
365 | bp = bread(pp->i_dev, bn, blksize(fs, pp, lbn)); | |
366 | if (bp->b_flags & B_ERROR) { | |
367 | brelse(bp); | |
368 | goto out; | |
369 | } | |
370 | ((struct direct *)(bp->b_un.b_addr + base))->d_reclen += | |
371 | u.u_dent.d_reclen; | |
4147b3f6 BJ |
372 | /*ZZ*/if(((int)(bp->b_un.b_addr + base)&0x1ff)+u.u_dent.d_reclen>512) |
373 | /*ZZ*/ panic("unlink: reclen"); | |
6459ebe0 KM |
374 | bwrite(bp); |
375 | pp->i_flag |= IUPD|ICHG; | |
376 | } | |
3e78e260 BJ |
377 | ip->i_nlink--; |
378 | ip->i_flag |= ICHG; | |
379 | ||
380 | out: | |
8eee8525 KM |
381 | if (unlinkingdot) |
382 | irele(ip); | |
383 | else | |
384 | iput(ip); | |
3e78e260 BJ |
385 | out1: |
386 | iput(pp); | |
387 | } | |
388 | ||
389 | /* | |
390 | * Seek system call | |
391 | */ | |
392 | seek() | |
393 | { | |
394 | register struct file *fp; | |
395 | register struct a { | |
396 | int fdes; | |
397 | off_t off; | |
398 | int sbase; | |
399 | } *uap; | |
400 | ||
401 | uap = (struct a *)u.u_ap; | |
402 | fp = getf(uap->fdes); | |
403 | if (fp == NULL) | |
404 | return; | |
4147b3f6 | 405 | if (fp->f_type == DTYPE_SOCKET) { |
3e78e260 BJ |
406 | u.u_error = ESPIPE; |
407 | return; | |
408 | } | |
409 | if (uap->sbase == 1) | |
410 | uap->off += fp->f_offset; | |
f94ceb3b BJ |
411 | else if (uap->sbase == 2) { |
412 | #ifdef EFS | |
413 | struct inode *ip = fp->f_inode; | |
414 | uap->off += efsinode(ip) ? efsfilesize(fp) : ip->i_size; | |
415 | #else | |
3e78e260 | 416 | uap->off += fp->f_inode->i_size; |
f94ceb3b BJ |
417 | #endif |
418 | } | |
3e78e260 BJ |
419 | fp->f_offset = uap->off; |
420 | u.u_r.r_off = uap->off; | |
421 | } | |
422 | ||
423 | /* | |
424 | * Access system call | |
425 | */ | |
426 | saccess() | |
427 | { | |
428 | register svuid, svgid; | |
429 | register struct inode *ip; | |
430 | register struct a { | |
431 | char *fname; | |
432 | int fmode; | |
433 | } *uap; | |
434 | ||
435 | uap = (struct a *)u.u_ap; | |
436 | svuid = u.u_uid; | |
437 | svgid = u.u_gid; | |
438 | u.u_uid = u.u_ruid; | |
439 | u.u_gid = u.u_rgid; | |
440 | ip = namei(uchar, 0, 1); | |
f94ceb3b BJ |
441 | #ifdef EFS |
442 | if (efsinode(ip)) { | |
443 | dev_t ndev = ip->i_rdev; | |
444 | ||
445 | iput(ip); | |
446 | efssaccess(ndev); | |
447 | if (u.u_error != EEXIST) | |
448 | return; | |
449 | u.u_error = 0; | |
450 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
451 | ip = namei(uchar, 0, 1); | |
452 | } | |
453 | #endif | |
3e78e260 BJ |
454 | if (ip != NULL) { |
455 | if (uap->fmode&(IREAD>>6)) | |
456 | (void) access(ip, IREAD); | |
457 | if (uap->fmode&(IWRITE>>6)) | |
458 | (void) access(ip, IWRITE); | |
459 | if (uap->fmode&(IEXEC>>6)) | |
460 | (void) access(ip, IEXEC); | |
461 | iput(ip); | |
462 | } | |
463 | u.u_uid = svuid; | |
464 | u.u_gid = svgid; | |
465 | } | |
d67a03eb BJ |
466 | |
467 | /* | |
468 | * the fstat system call. | |
469 | */ | |
470 | fstat() | |
471 | { | |
472 | register struct file *fp; | |
473 | register struct a { | |
474 | int fdes; | |
475 | struct stat *sb; | |
476 | } *uap; | |
477 | ||
478 | uap = (struct a *)u.u_ap; | |
479 | fp = getf(uap->fdes); | |
e92a04af | 480 | if (fp == NULL) |
d67a03eb | 481 | return; |
f94ceb3b BJ |
482 | #ifdef EFS |
483 | if (efsinode(fp->f_inode)) { | |
484 | efsfstat(fp->f_inode->i_rdev, fp); | |
485 | return; | |
486 | } | |
487 | #endif | |
4147b3f6 | 488 | if (fp->f_type == DTYPE_SOCKET) |
cc15ab5d | 489 | u.u_error = sostat(fp->f_socket, uap->sb); |
e92a04af BJ |
490 | else |
491 | stat1(fp->f_inode, uap->sb); | |
d67a03eb BJ |
492 | } |
493 | ||
494 | /* | |
6459ebe0 | 495 | * Stat system call. This version follows links. |
d67a03eb BJ |
496 | */ |
497 | stat() | |
498 | { | |
499 | register struct inode *ip; | |
500 | register struct a { | |
501 | char *fname; | |
502 | struct stat *sb; | |
503 | } *uap; | |
504 | ||
505 | uap = (struct a *)u.u_ap; | |
66d4ba1b | 506 | ip = namei(uchar, 0, 1); |
e92a04af | 507 | if (ip == NULL) |
d67a03eb | 508 | return; |
f94ceb3b BJ |
509 | #ifdef EFS |
510 | if (efsinode(ip)) { | |
511 | dev_t ndev = ip->i_rdev; | |
512 | ||
513 | iput(ip); | |
514 | efsstat(ndev); | |
515 | if (u.u_error != EEXIST) | |
516 | return; | |
517 | u.u_error = 0; | |
518 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
519 | ip = namei(uchar, 0, 1); | |
520 | } | |
521 | #endif | |
a3aa7f92 | 522 | stat1(ip, uap->sb); |
d67a03eb BJ |
523 | iput(ip); |
524 | } | |
525 | ||
5485e062 | 526 | /* |
6459ebe0 | 527 | * Lstat system call. This version does not follow links. |
5485e062 BJ |
528 | */ |
529 | lstat() | |
530 | { | |
531 | register struct inode *ip; | |
532 | register struct a { | |
533 | char *fname; | |
534 | struct stat *sb; | |
535 | } *uap; | |
536 | ||
537 | uap = (struct a *)u.u_ap; | |
66d4ba1b | 538 | ip = namei(uchar, 0, 0); |
5485e062 BJ |
539 | if (ip == NULL) |
540 | return; | |
f94ceb3b BJ |
541 | #ifdef EFS |
542 | if (efsinode(ip)) { | |
543 | dev_t ndev = ip->i_rdev; | |
544 | ||
545 | iput(ip); | |
546 | efslstat(ndev); | |
547 | if (u.u_error != EEXIST) | |
548 | return; | |
549 | u.u_error = 0; | |
550 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
551 | ip = namei(uchar, 0, 0); | |
552 | } | |
553 | #endif | |
019b08c9 | 554 | stat1(ip, uap->sb); |
5485e062 BJ |
555 | iput(ip); |
556 | } | |
557 | ||
d67a03eb BJ |
558 | /* |
559 | * The basic routine for fstat and stat: | |
560 | * get the inode and pass appropriate parts back. | |
561 | */ | |
a3aa7f92 | 562 | stat1(ip, ub) |
e92a04af BJ |
563 | register struct inode *ip; |
564 | struct stat *ub; | |
d67a03eb | 565 | { |
d67a03eb BJ |
566 | struct stat ds; |
567 | ||
c0bb1685 | 568 | IUPDAT(ip, &time, &time, 0); |
d67a03eb | 569 | /* |
09c42945 | 570 | * Copy from inode table |
d67a03eb BJ |
571 | */ |
572 | ds.st_dev = ip->i_dev; | |
573 | ds.st_ino = ip->i_number; | |
574 | ds.st_mode = ip->i_mode; | |
575 | ds.st_nlink = ip->i_nlink; | |
576 | ds.st_uid = ip->i_uid; | |
577 | ds.st_gid = ip->i_gid; | |
6459ebe0 | 578 | ds.st_rdev = (dev_t)ip->i_rdev; |
a3aa7f92 | 579 | ds.st_size = ip->i_size; |
6459ebe0 KM |
580 | ds.st_atime = ip->i_atime; |
581 | ds.st_mtime = ip->i_mtime; | |
582 | ds.st_ctime = ip->i_ctime; | |
09c42945 | 583 | ds.st_blksize = ip->i_fs->fs_bsize; |
d67a03eb BJ |
584 | if (copyout((caddr_t)&ds, (caddr_t)ub, sizeof(ds)) < 0) |
585 | u.u_error = EFAULT; | |
586 | } | |
587 | ||
588 | /* | |
5485e062 BJ |
589 | * Return target name of a symbolic link |
590 | */ | |
591 | readlink() | |
592 | { | |
593 | register struct inode *ip; | |
594 | register struct a { | |
595 | char *name; | |
596 | char *buf; | |
597 | int count; | |
598 | } *uap; | |
599 | ||
600 | ip = namei(uchar, 0, 0); | |
601 | if (ip == NULL) | |
602 | return; | |
f94ceb3b BJ |
603 | #ifdef EFS |
604 | if (efsinode(ip)) { | |
605 | dev_t ndev = ip->i_rdev; | |
606 | ||
607 | iput(ip); | |
608 | efsreadlink(ndev); | |
609 | if (u.u_error != EEXIST) | |
610 | return; | |
611 | u.u_error = 0; | |
612 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
613 | ip = namei(uchar, 0, 0); | |
614 | return (0); | |
615 | } | |
616 | #endif | |
5485e062 BJ |
617 | if ((ip->i_mode&IFMT) != IFLNK) { |
618 | u.u_error = ENXIO; | |
619 | goto out; | |
620 | } | |
621 | uap = (struct a *)u.u_ap; | |
622 | u.u_offset = 0; | |
623 | u.u_base = uap->buf; | |
624 | u.u_count = uap->count; | |
625 | u.u_segflg = 0; | |
626 | readi(ip); | |
627 | out: | |
628 | iput(ip); | |
629 | u.u_r.r_val1 = uap->count - u.u_count; | |
630 | } | |
631 | ||
3e78e260 | 632 | chmod() |
5485e062 | 633 | { |
3e78e260 | 634 | register struct inode *ip; |
5485e062 | 635 | register struct a { |
3e78e260 BJ |
636 | char *fname; |
637 | int fmode; | |
5485e062 | 638 | } *uap; |
5485e062 BJ |
639 | |
640 | uap = (struct a *)u.u_ap; | |
3e78e260 | 641 | if ((ip = owner(1)) == NULL) |
5485e062 | 642 | return; |
f94ceb3b BJ |
643 | #ifdef EFS |
644 | if (efsinode(ip)) { | |
645 | dev_t ndev = ip->i_rdev; | |
646 | ||
647 | iput(ip); | |
648 | efschmod(ndev); | |
649 | if (u.u_error != EEXIST) | |
650 | return; | |
651 | u.u_error = 0; | |
652 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
653 | ip = owner(1); | |
654 | } | |
655 | #endif | |
3e78e260 | 656 | ip->i_mode &= ~07777; |
f94ceb3b | 657 | if (u.u_uid) { |
3e78e260 | 658 | uap->fmode &= ~ISVTX; |
f94ceb3b BJ |
659 | if (ip->i_gid >= NGRPS || |
660 | (u.u_grps[ip->i_gid/(sizeof(int)*8)] & | |
661 | (1 << ip->i_gid%(sizeof(int)*8))) == 0) | |
662 | uap->fmode &= ~ISGID; | |
0a77f278 RE |
663 | #if MUSH |
664 | if (u.u_quota->q_syflags & QF_UMASK && u.u_uid != 0 && | |
665 | (ip->i_mode & IFMT) != IFCHR) | |
666 | uap->fmode &= ~u.u_cmask; | |
667 | #endif | |
f94ceb3b | 668 | } |
3e78e260 BJ |
669 | ip->i_mode |= uap->fmode&07777; |
670 | ip->i_flag |= ICHG; | |
671 | if (ip->i_flag&ITEXT && (ip->i_mode&ISVTX)==0) | |
672 | xrele(ip); | |
0a77f278 RE |
673 | #ifdef MELB |
674 | if ((ip->i_mode & ISUID) && ip->i_uid == 0) | |
675 | printf("%s: ino %d (%s) setuid root\n" | |
676 | , getfs(ip->i_dev)->s_fsmnt | |
677 | , ip->i_number | |
678 | , u.u_dent.d_name | |
679 | ); | |
680 | #endif | |
5485e062 BJ |
681 | iput(ip); |
682 | } | |
683 | ||
3e78e260 | 684 | chown() |
d67a03eb | 685 | { |
3e78e260 | 686 | register struct inode *ip; |
d67a03eb | 687 | register struct a { |
3e78e260 BJ |
688 | char *fname; |
689 | int uid; | |
690 | int gid; | |
d67a03eb | 691 | } *uap; |
0a77f278 RE |
692 | #if QUOTA |
693 | register long change; | |
694 | #endif | |
d67a03eb BJ |
695 | |
696 | uap = (struct a *)u.u_ap; | |
3e78e260 | 697 | if (!suser() || (ip = owner(0)) == NULL) |
d67a03eb | 698 | return; |
f94ceb3b BJ |
699 | #ifdef EFS |
700 | if (efsinode(ip)) { | |
701 | dev_t ndev = ip->i_rdev; | |
702 | ||
703 | iput(ip); | |
704 | efschown(ndev); | |
705 | if (u.u_error != EEXIST) | |
706 | return; | |
707 | u.u_error = 0; | |
708 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
709 | ip = owner(0); | |
710 | } | |
0a77f278 RE |
711 | #endif |
712 | #if QUOTA | |
713 | /* | |
714 | * This doesn't allow for holes in files (which hopefully don't | |
715 | * happen often in files that we chown), and is not accurate anyway | |
716 | * (eg: it totally ignores 3 level indir blk files - but hopefully | |
717 | * noone who can make a file that big will have a quota) | |
718 | */ | |
719 | if (ip->i_uid == uap->uid) | |
720 | change = 0; | |
721 | else { | |
722 | register struct fs *fs = ip->i_fs; | |
723 | ||
724 | if (ip->i_size > (change = NDADDR * fs->fs_bsize)) { | |
725 | register off_t size; | |
726 | ||
727 | size = blkroundup(fs, ip->i_size) - change; | |
728 | change += size; | |
729 | change += fs->fs_bsize; | |
730 | /* This assumes NIADDR <= 2 */ | |
731 | if (size > NINDIR(fs) * fs->fs_bsize) | |
732 | change += fs->fs_bsize; | |
733 | } else | |
734 | change = fragroundup(fs, ip->i_size); | |
735 | change /= DEV_BSIZE; | |
736 | } | |
737 | chkdq(ip, -change, 1); | |
738 | chkiq(ip->i_dev, ip, ip->i_uid, 1); | |
739 | dqrele(ip->i_dquot); | |
f94ceb3b BJ |
740 | #endif |
741 | /* | |
742 | * keep uid/gid's in sane range - no err, so chown(file, uid, -1) | |
743 | * will do something useful | |
744 | */ | |
745 | if (uap->uid >= 0 && uap->uid <= 32767) /* should have a const */ | |
746 | ip->i_uid = uap->uid; | |
747 | if (uap->gid >= 0 && uap->gid <= 32767) /* same here */ | |
748 | ip->i_gid = uap->gid; | |
3e78e260 BJ |
749 | ip->i_flag |= ICHG; |
750 | if (u.u_ruid != 0) | |
751 | ip->i_mode &= ~(ISUID|ISGID); | |
0a77f278 RE |
752 | #if QUOTA |
753 | ip->i_dquot = inoquota(ip); | |
754 | chkdq(ip, change, 1); | |
755 | chkiq(ip->i_dev, NULL, uap->uid, 1); | |
756 | #endif | |
3e78e260 | 757 | iput(ip); |
d67a03eb BJ |
758 | } |
759 | ||
760 | /* | |
3e78e260 BJ |
761 | * Set IUPD and IACC times on file. |
762 | * Can't set ICHG. | |
d67a03eb | 763 | */ |
3e78e260 | 764 | utime() |
e92a04af | 765 | { |
d67a03eb | 766 | register struct a { |
3e78e260 BJ |
767 | char *fname; |
768 | time_t *tptr; | |
d67a03eb | 769 | } *uap; |
3e78e260 BJ |
770 | register struct inode *ip; |
771 | time_t tv[2]; | |
d67a03eb BJ |
772 | |
773 | uap = (struct a *)u.u_ap; | |
3e78e260 | 774 | if ((ip = owner(1)) == NULL) |
d67a03eb | 775 | return; |
3e78e260 BJ |
776 | if (copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof(tv))) { |
777 | u.u_error = EFAULT; | |
778 | } else { | |
f94ceb3b BJ |
779 | #ifdef EFS |
780 | if (efsinode(ip)) { | |
781 | dev_t ndev = ip->i_rdev; | |
782 | ||
783 | iput(ip); | |
784 | efsutime(ndev, uap->fname, tv); | |
785 | if (u.u_error != EEXIST) | |
786 | return; | |
787 | u.u_error = 0; | |
788 | u.u_dirp = (caddr_t)u.u_arg[0]; | |
789 | ip = owner(1); | |
790 | } | |
791 | #endif | |
3e78e260 BJ |
792 | ip->i_flag |= IACC|IUPD|ICHG; |
793 | iupdat(ip, &tv[0], &tv[1], 0); | |
d67a03eb | 794 | } |
d67a03eb BJ |
795 | iput(ip); |
796 | } | |
797 | ||
3e78e260 | 798 | sync() |
d67a03eb | 799 | { |
d67a03eb | 800 | |
68503f9a | 801 | update(0); |
d67a03eb | 802 | } |