Commit | Line | Data |
---|---|---|
654c61ee | 1 | #ifndef lint |
3bda777c | 2 | static char *sccsid = "@(#)tar.c 4.19 (Berkeley) %G%"; |
654c61ee | 3 | #endif |
555a248b BJ |
4 | |
5 | /* | |
6 | * Tape Archival Program | |
7 | */ | |
415c8aef | 8 | #include <stdio.h> |
d7ab2ea5 | 9 | #include <sys/param.h> |
415c8aef | 10 | #include <sys/stat.h> |
654c61ee | 11 | #include <sys/dir.h> |
dfdd2236 | 12 | #include <sys/ioctl.h> |
06eff236 | 13 | #include <sys/mtio.h> |
828d5b76 | 14 | #include <sys/time.h> |
415c8aef | 15 | #include <signal.h> |
654c61ee | 16 | #include <errno.h> |
415c8aef | 17 | |
415c8aef | 18 | #define TBLOCK 512 |
9547dafa | 19 | #define NBLOCK 20 |
415c8aef | 20 | #define NAMSIZ 100 |
555a248b | 21 | |
415c8aef BJ |
22 | union hblock { |
23 | char dummy[TBLOCK]; | |
24 | struct header { | |
25 | char name[NAMSIZ]; | |
26 | char mode[8]; | |
27 | char uid[8]; | |
28 | char gid[8]; | |
29 | char size[12]; | |
30 | char mtime[12]; | |
31 | char chksum[8]; | |
32 | char linkflag; | |
33 | char linkname[NAMSIZ]; | |
34 | } dbuf; | |
555a248b | 35 | }; |
415c8aef BJ |
36 | |
37 | struct linkbuf { | |
38 | ino_t inum; | |
39 | dev_t devnum; | |
40 | int count; | |
41 | char pathname[NAMSIZ]; | |
42 | struct linkbuf *nextp; | |
555a248b BJ |
43 | }; |
44 | ||
45 | union hblock dblock; | |
095da6e7 | 46 | union hblock *tbuf; |
555a248b BJ |
47 | struct linkbuf *ihead; |
48 | struct stat stbuf; | |
49 | ||
50 | int rflag; | |
51 | int xflag; | |
52 | int vflag; | |
53 | int tflag; | |
54 | int cflag; | |
55 | int mflag; | |
56 | int fflag; | |
654c61ee | 57 | int iflag; |
555a248b BJ |
58 | int oflag; |
59 | int pflag; | |
60 | int wflag; | |
61 | int hflag; | |
8678ae71 | 62 | int Bflag; |
654c61ee | 63 | int Fflag; |
555a248b BJ |
64 | |
65 | int mt; | |
66 | int term; | |
67 | int chksum; | |
68 | int recno; | |
69 | int first; | |
70 | int linkerrok; | |
415c8aef | 71 | int freemem = 1; |
06eff236 | 72 | int nblock = NBLOCK; |
555a248b BJ |
73 | int onintr(); |
74 | int onquit(); | |
75 | int onhup(); | |
76 | int onterm(); | |
415c8aef BJ |
77 | |
78 | daddr_t low; | |
79 | daddr_t high; | |
555a248b | 80 | daddr_t bsrch(); |
415c8aef BJ |
81 | |
82 | FILE *tfile; | |
83 | char tname[] = "/tmp/tarXXXXXX"; | |
415c8aef | 84 | char *usefile; |
555a248b | 85 | char magtape[] = "/dev/rmt8"; |
415c8aef | 86 | char *malloc(); |
555a248b BJ |
87 | char *sprintf(); |
88 | char *strcat(); | |
654c61ee | 89 | char *rindex(); |
5ee3622a | 90 | char *getcwd(); |
13fc8845 | 91 | char *getwd(); |
415c8aef BJ |
92 | |
93 | main(argc, argv) | |
94 | int argc; | |
95 | char *argv[]; | |
96 | { | |
97 | char *cp; | |
415c8aef BJ |
98 | |
99 | if (argc < 2) | |
100 | usage(); | |
101 | ||
102 | tfile = NULL; | |
103 | usefile = magtape; | |
104 | argv[argc] = 0; | |
105 | argv++; | |
106 | for (cp = *argv++; *cp; cp++) | |
107 | switch(*cp) { | |
555a248b | 108 | |
415c8aef | 109 | case 'f': |
654c61ee SL |
110 | if (*argv == 0) { |
111 | fprintf(stderr, | |
112 | "tar: tapefile must be specified with 'f' option\n"); | |
113 | usage(); | |
114 | } | |
415c8aef BJ |
115 | usefile = *argv++; |
116 | fflag++; | |
415c8aef | 117 | break; |
555a248b | 118 | |
415c8aef BJ |
119 | case 'c': |
120 | cflag++; | |
121 | rflag++; | |
122 | break; | |
555a248b | 123 | |
415c8aef BJ |
124 | case 'o': |
125 | oflag++; | |
126 | break; | |
555a248b | 127 | |
415c8aef BJ |
128 | case 'p': |
129 | pflag++; | |
130 | break; | |
555a248b | 131 | |
415c8aef BJ |
132 | case 'u': |
133 | mktemp(tname); | |
134 | if ((tfile = fopen(tname, "w")) == NULL) { | |
555a248b BJ |
135 | fprintf(stderr, |
136 | "Tar: cannot create temporary file (%s)\n", | |
137 | tname); | |
415c8aef BJ |
138 | done(1); |
139 | } | |
140 | fprintf(tfile, "!!!!!/!/!/!/!/!/!/! 000\n"); | |
555a248b BJ |
141 | /*FALL THRU*/ |
142 | ||
415c8aef BJ |
143 | case 'r': |
144 | rflag++; | |
415c8aef | 145 | break; |
555a248b | 146 | |
415c8aef BJ |
147 | case 'v': |
148 | vflag++; | |
149 | break; | |
555a248b | 150 | |
415c8aef BJ |
151 | case 'w': |
152 | wflag++; | |
153 | break; | |
555a248b | 154 | |
415c8aef BJ |
155 | case 'x': |
156 | xflag++; | |
157 | break; | |
555a248b | 158 | |
415c8aef BJ |
159 | case 't': |
160 | tflag++; | |
161 | break; | |
555a248b | 162 | |
415c8aef BJ |
163 | case 'm': |
164 | mflag++; | |
165 | break; | |
555a248b | 166 | |
415c8aef BJ |
167 | case '-': |
168 | break; | |
555a248b | 169 | |
415c8aef BJ |
170 | case '0': |
171 | case '1': | |
172 | case '4': | |
173 | case '5': | |
174 | case '7': | |
175 | case '8': | |
176 | magtape[8] = *cp; | |
177 | usefile = magtape; | |
178 | break; | |
555a248b | 179 | |
415c8aef | 180 | case 'b': |
095da6e7 SL |
181 | if (*argv == 0) { |
182 | fprintf(stderr, | |
183 | "tar: blocksize must be specified with 'b' option\n"); | |
184 | usage(); | |
185 | } | |
186 | nblock = atoi(*argv); | |
187 | if (nblock <= 0) { | |
188 | fprintf(stderr, | |
189 | "tar: invalid blocksize \"%s\"\n", *argv); | |
415c8aef BJ |
190 | done(1); |
191 | } | |
095da6e7 | 192 | argv++; |
415c8aef | 193 | break; |
555a248b | 194 | |
415c8aef BJ |
195 | case 'l': |
196 | linkerrok++; | |
197 | break; | |
555a248b BJ |
198 | |
199 | case 'h': | |
200 | hflag++; | |
201 | break; | |
202 | ||
654c61ee SL |
203 | case 'i': |
204 | iflag++; | |
205 | break; | |
206 | ||
8678ae71 KM |
207 | case 'B': |
208 | Bflag++; | |
209 | break; | |
210 | ||
654c61ee SL |
211 | case 'F': |
212 | Fflag++; | |
213 | break; | |
214 | ||
415c8aef BJ |
215 | default: |
216 | fprintf(stderr, "tar: %c: unknown option\n", *cp); | |
217 | usage(); | |
218 | } | |
219 | ||
555a248b BJ |
220 | if (!rflag && !xflag && !tflag) |
221 | usage(); | |
095da6e7 SL |
222 | tbuf = (union hblock *)malloc(nblock*TBLOCK); |
223 | if (tbuf == NULL) { | |
224 | fprintf(stderr, "tar: blocksize %d too big, can't get memory\n", | |
225 | nblock); | |
226 | done(1); | |
227 | } | |
415c8aef | 228 | if (rflag) { |
555a248b | 229 | if (cflag && tfile != NULL) |
415c8aef | 230 | usage(); |
415c8aef BJ |
231 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
232 | signal(SIGINT, onintr); | |
233 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) | |
234 | signal(SIGHUP, onhup); | |
235 | if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) | |
236 | signal(SIGQUIT, onquit); | |
555a248b | 237 | #ifdef notdef |
415c8aef BJ |
238 | if (signal(SIGTERM, SIG_IGN) != SIG_IGN) |
239 | signal(SIGTERM, onterm); | |
555a248b | 240 | #endif |
415c8aef BJ |
241 | if (strcmp(usefile, "-") == 0) { |
242 | if (cflag == 0) { | |
555a248b | 243 | fprintf(stderr, |
095da6e7 | 244 | "tar: can only create standard output archives\n"); |
415c8aef BJ |
245 | done(1); |
246 | } | |
247 | mt = dup(1); | |
248 | nblock = 1; | |
555a248b | 249 | } else if ((mt = open(usefile, 2)) < 0) { |
415c8aef | 250 | if (cflag == 0 || (mt = creat(usefile, 0666)) < 0) { |
555a248b BJ |
251 | fprintf(stderr, |
252 | "tar: cannot open %s\n", usefile); | |
415c8aef BJ |
253 | done(1); |
254 | } | |
255 | } | |
415c8aef | 256 | dorep(argv); |
555a248b | 257 | done(0); |
415c8aef | 258 | } |
555a248b BJ |
259 | if (strcmp(usefile, "-") == 0) { |
260 | mt = dup(0); | |
261 | nblock = 1; | |
262 | } else if ((mt = open(usefile, 0)) < 0) { | |
263 | fprintf(stderr, "tar: cannot open %s\n", usefile); | |
264 | done(1); | |
415c8aef | 265 | } |
555a248b BJ |
266 | if (xflag) |
267 | doxtract(argv); | |
415c8aef | 268 | else |
555a248b | 269 | dotable(); |
415c8aef BJ |
270 | done(0); |
271 | } | |
272 | ||
273 | usage() | |
274 | { | |
555a248b | 275 | fprintf(stderr, |
095da6e7 | 276 | "tar: usage: tar -{txru}[cvfblmhopwBi] [tapefile] [blocksize] file1 file2...\n"); |
415c8aef BJ |
277 | done(1); |
278 | } | |
279 | ||
280 | dorep(argv) | |
555a248b | 281 | char *argv[]; |
415c8aef BJ |
282 | { |
283 | register char *cp, *cp2; | |
f21b792d | 284 | char wdir[MAXPATHLEN], tempdir[MAXPATHLEN], *parent; |
415c8aef BJ |
285 | |
286 | if (!cflag) { | |
287 | getdir(); | |
288 | do { | |
289 | passtape(); | |
290 | if (term) | |
291 | done(0); | |
292 | getdir(); | |
293 | } while (!endtape()); | |
095da6e7 | 294 | backtape(); |
415c8aef BJ |
295 | if (tfile != NULL) { |
296 | char buf[200]; | |
297 | ||
555a248b BJ |
298 | sprintf(buf, |
299 | "sort +0 -1 +1nr %s -o %s; awk '$1 != prev {print; prev=$1}' %s >%sX; mv %sX %s", | |
415c8aef BJ |
300 | tname, tname, tname, tname, tname, tname); |
301 | fflush(tfile); | |
302 | system(buf); | |
303 | freopen(tname, "r", tfile); | |
304 | fstat(fileno(tfile), &stbuf); | |
305 | high = stbuf.st_size; | |
306 | } | |
307 | } | |
308 | ||
5ee3622a | 309 | (void) getcwd(wdir); |
415c8aef BJ |
310 | while (*argv && ! term) { |
311 | cp2 = *argv; | |
312 | if (!strcmp(cp2, "-C") && argv[1]) { | |
313 | argv++; | |
314 | if (chdir(*argv) < 0) | |
315 | perror(*argv); | |
316 | else | |
5ee3622a | 317 | (void) getcwd(wdir); |
415c8aef BJ |
318 | argv++; |
319 | continue; | |
320 | } | |
f21b792d | 321 | parent = wdir; |
415c8aef BJ |
322 | for (cp = *argv; *cp; cp++) |
323 | if (*cp == '/') | |
324 | cp2 = cp; | |
325 | if (cp2 != *argv) { | |
326 | *cp2 = '\0'; | |
f21b792d SL |
327 | if (chdir(*argv) < 0) { |
328 | perror(*argv); | |
329 | continue; | |
330 | } | |
5ee3622a | 331 | parent = getcwd(tempdir); |
415c8aef BJ |
332 | *cp2 = '/'; |
333 | cp2++; | |
334 | } | |
f21b792d | 335 | putfile(*argv++, cp2, parent); |
3bda777c KM |
336 | if (chdir(wdir) < 0) { |
337 | fprintf(stderr, "cannot change back?: "); | |
338 | perror(wdir); | |
339 | } | |
415c8aef BJ |
340 | } |
341 | putempty(); | |
342 | putempty(); | |
343 | flushtape(); | |
555a248b BJ |
344 | if (linkerrok == 0) |
345 | return; | |
346 | for (; ihead != NULL; ihead = ihead->nextp) { | |
347 | if (ihead->count == 0) | |
348 | continue; | |
095da6e7 | 349 | fprintf(stderr, "tar: missing links to %s\n", ihead->pathname); |
555a248b | 350 | } |
415c8aef BJ |
351 | } |
352 | ||
353 | endtape() | |
354 | { | |
095da6e7 | 355 | return (dblock.dbuf.name[0] == '\0'); |
415c8aef BJ |
356 | } |
357 | ||
358 | getdir() | |
359 | { | |
360 | register struct stat *sp; | |
361 | int i; | |
362 | ||
654c61ee | 363 | top: |
555a248b | 364 | readtape((char *)&dblock); |
415c8aef BJ |
365 | if (dblock.dbuf.name[0] == '\0') |
366 | return; | |
367 | sp = &stbuf; | |
368 | sscanf(dblock.dbuf.mode, "%o", &i); | |
369 | sp->st_mode = i; | |
370 | sscanf(dblock.dbuf.uid, "%o", &i); | |
371 | sp->st_uid = i; | |
372 | sscanf(dblock.dbuf.gid, "%o", &i); | |
373 | sp->st_gid = i; | |
374 | sscanf(dblock.dbuf.size, "%lo", &sp->st_size); | |
375 | sscanf(dblock.dbuf.mtime, "%lo", &sp->st_mtime); | |
376 | sscanf(dblock.dbuf.chksum, "%o", &chksum); | |
654c61ee | 377 | if (chksum != (i = checksum())) { |
095da6e7 | 378 | fprintf(stderr, "tar: directory checksum error (%d != %d)\n", |
654c61ee SL |
379 | chksum, i); |
380 | if (iflag) | |
381 | goto top; | |
415c8aef BJ |
382 | done(2); |
383 | } | |
384 | if (tfile != NULL) | |
385 | fprintf(tfile, "%s %s\n", dblock.dbuf.name, dblock.dbuf.mtime); | |
386 | } | |
387 | ||
388 | passtape() | |
389 | { | |
390 | long blocks; | |
391 | char buf[TBLOCK]; | |
392 | ||
393 | if (dblock.dbuf.linkflag == '1') | |
394 | return; | |
395 | blocks = stbuf.st_size; | |
396 | blocks += TBLOCK-1; | |
397 | blocks /= TBLOCK; | |
398 | ||
399 | while (blocks-- > 0) | |
400 | readtape(buf); | |
401 | } | |
402 | ||
f21b792d | 403 | putfile(longname, shortname, parent) |
555a248b BJ |
404 | char *longname; |
405 | char *shortname; | |
f21b792d | 406 | char *parent; |
415c8aef | 407 | { |
654c61ee | 408 | int infile = 0; |
415c8aef BJ |
409 | long blocks; |
410 | char buf[TBLOCK]; | |
411 | register char *cp, *cp2; | |
aeb5c9b4 KM |
412 | struct direct *dp; |
413 | DIR *dirp; | |
415c8aef | 414 | int i, j; |
f21b792d | 415 | char newparent[NAMSIZ+64]; |
654c61ee | 416 | extern int errno; |
415c8aef | 417 | |
f21b792d | 418 | if (!hflag) |
654c61ee SL |
419 | i = lstat(shortname, &stbuf); |
420 | else | |
421 | i = stat(shortname, &stbuf); | |
422 | if (i < 0) { | |
423 | switch (errno) { | |
424 | case EACCES: | |
425 | fprintf(stderr, "tar: %s: cannot open file\n", longname); | |
426 | break; | |
427 | case ENOENT: | |
428 | fprintf(stderr, "tar: %s: no such file or directory\n", | |
429 | longname); | |
430 | break; | |
431 | default: | |
432 | fprintf(stderr, "tar: %s: cannot stat file\n", longname); | |
433 | break; | |
434 | } | |
f21b792d SL |
435 | return; |
436 | } | |
654c61ee | 437 | if (tfile != NULL && checkupdate(longname) == 0) |
415c8aef | 438 | return; |
654c61ee SL |
439 | if (checkw('r', longname) == 0) |
440 | return; | |
441 | if (Fflag && checkf(shortname, stbuf.st_mode, Fflag) == 0) | |
415c8aef | 442 | return; |
415c8aef | 443 | |
654c61ee SL |
444 | switch (stbuf.st_mode & S_IFMT) { |
445 | case S_IFDIR: | |
555a248b BJ |
446 | for (i = 0, cp = buf; *cp++ = longname[i++];) |
447 | ; | |
415c8aef BJ |
448 | *--cp = '/'; |
449 | *++cp = 0 ; | |
415c8aef | 450 | if (!oflag) { |
555a248b | 451 | if ((cp - buf) >= NAMSIZ) { |
095da6e7 SL |
452 | fprintf(stderr, "tar: %s: file name too long\n", |
453 | longname); | |
555a248b BJ |
454 | return; |
455 | } | |
456 | stbuf.st_size = 0; | |
457 | tomodes(&stbuf); | |
458 | strcpy(dblock.dbuf.name,buf); | |
459 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
460 | writetape((char *)&dblock); | |
415c8aef | 461 | } |
f21b792d | 462 | sprintf(newparent, "%s/%s", parent, shortname); |
3bda777c KM |
463 | if (chdir(shortname) < 0) { |
464 | perror(shortname); | |
465 | return; | |
466 | } | |
aeb5c9b4 | 467 | if ((dirp = opendir(".")) == NULL) { |
095da6e7 SL |
468 | fprintf(stderr, "tar: %s: directory read error\n", |
469 | longname); | |
3bda777c KM |
470 | if (chdir(parent) < 0) { |
471 | fprintf(stderr, "cannot change back?: "); | |
472 | perror(parent); | |
473 | } | |
aeb5c9b4 KM |
474 | return; |
475 | } | |
476 | while ((dp = readdir(dirp)) != NULL && !term) { | |
477 | if (dp->d_ino == 0) | |
415c8aef | 478 | continue; |
555a248b BJ |
479 | if (!strcmp(".", dp->d_name) || |
480 | !strcmp("..", dp->d_name)) | |
415c8aef | 481 | continue; |
aeb5c9b4 KM |
482 | strcpy(cp, dp->d_name); |
483 | i = telldir(dirp); | |
484 | closedir(dirp); | |
f21b792d | 485 | putfile(buf, cp, newparent); |
aeb5c9b4 KM |
486 | dirp = opendir("."); |
487 | seekdir(dirp, i); | |
415c8aef | 488 | } |
aeb5c9b4 | 489 | closedir(dirp); |
3bda777c KM |
490 | if (chdir(parent) < 0) { |
491 | fprintf(stderr, "cannot change back?: "); | |
492 | perror(parent); | |
493 | } | |
654c61ee SL |
494 | break; |
495 | ||
496 | case S_IFLNK: | |
497 | tomodes(&stbuf); | |
498 | if (strlen(longname) >= NAMSIZ) { | |
095da6e7 SL |
499 | fprintf(stderr, "tar: %s: file name too long\n", |
500 | longname); | |
654c61ee SL |
501 | return; |
502 | } | |
503 | strcpy(dblock.dbuf.name, longname); | |
555a248b | 504 | if (stbuf.st_size + 1 >= NAMSIZ) { |
095da6e7 SL |
505 | fprintf(stderr, "tar: %s: symbolic link too long\n", |
506 | longname); | |
555a248b BJ |
507 | return; |
508 | } | |
f21b792d | 509 | i = readlink(shortname, dblock.dbuf.linkname, NAMSIZ - 1); |
555a248b | 510 | if (i < 0) { |
f21b792d | 511 | perror(longname); |
555a248b BJ |
512 | return; |
513 | } | |
514 | dblock.dbuf.linkname[i] = '\0'; | |
515 | dblock.dbuf.linkflag = '2'; | |
516 | if (vflag) { | |
517 | fprintf(stderr, "a %s ", longname); | |
518 | fprintf(stderr, "symbolic link to %s\n", | |
095da6e7 | 519 | dblock.dbuf.linkname); |
555a248b BJ |
520 | } |
521 | sprintf(dblock.dbuf.size, "%11lo", 0); | |
522 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
523 | writetape((char *)&dblock); | |
654c61ee SL |
524 | break; |
525 | ||
526 | case S_IFREG: | |
527 | if ((infile = open(shortname, 0)) < 0) { | |
528 | fprintf(stderr, "tar: %s: cannot open file\n", longname); | |
415c8aef BJ |
529 | return; |
530 | } | |
654c61ee SL |
531 | tomodes(&stbuf); |
532 | if (strlen(longname) >= NAMSIZ) { | |
095da6e7 SL |
533 | fprintf(stderr, "tar: %s: file name too long\n", |
534 | longname); | |
654c61ee SL |
535 | return; |
536 | } | |
537 | strcpy(dblock.dbuf.name, longname); | |
538 | if (stbuf.st_nlink > 1) { | |
539 | struct linkbuf *lp; | |
540 | int found = 0; | |
541 | ||
542 | for (lp = ihead; lp != NULL; lp = lp->nextp) | |
543 | if (lp->inum == stbuf.st_ino && | |
544 | lp->devnum == stbuf.st_dev) { | |
545 | found++; | |
546 | break; | |
547 | } | |
548 | if (found) { | |
549 | strcpy(dblock.dbuf.linkname, lp->pathname); | |
550 | dblock.dbuf.linkflag = '1'; | |
551 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
552 | writetape( (char *) &dblock); | |
553 | if (vflag) { | |
554 | fprintf(stderr, "a %s ", longname); | |
095da6e7 SL |
555 | fprintf(stderr, "link to %s\n", |
556 | lp->pathname); | |
654c61ee SL |
557 | } |
558 | lp->count--; | |
559 | close(infile); | |
560 | return; | |
561 | } | |
562 | lp = (struct linkbuf *) malloc(sizeof(*lp)); | |
563 | if (lp == NULL) { | |
564 | if (freemem) { | |
565 | fprintf(stderr, | |
095da6e7 | 566 | "tar: out of memory, link information lost\n"); |
654c61ee SL |
567 | freemem = 0; |
568 | } | |
569 | } else { | |
570 | lp->nextp = ihead; | |
571 | ihead = lp; | |
572 | lp->inum = stbuf.st_ino; | |
573 | lp->devnum = stbuf.st_dev; | |
574 | lp->count = stbuf.st_nlink - 1; | |
575 | strcpy(lp->pathname, longname); | |
415c8aef BJ |
576 | } |
577 | } | |
654c61ee SL |
578 | blocks = (stbuf.st_size + (TBLOCK-1)) / TBLOCK; |
579 | if (vflag) { | |
580 | fprintf(stderr, "a %s ", longname); | |
581 | fprintf(stderr, "%ld blocks\n", blocks); | |
582 | } | |
583 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
584 | writetape((char *)&dblock); | |
415c8aef | 585 | |
654c61ee SL |
586 | while ((i = read(infile, buf, TBLOCK)) > 0 && blocks > 0) { |
587 | writetape(buf); | |
588 | blocks--; | |
589 | } | |
590 | close(infile); | |
591 | if (blocks != 0 || i != 0) | |
095da6e7 SL |
592 | fprintf(stderr, "tar: %s: file changed size\n", |
593 | longname); | |
654c61ee SL |
594 | while (--blocks >= 0) |
595 | putempty(); | |
596 | break; | |
597 | ||
598 | default: | |
599 | fprintf(stderr, "tar: %s is not a file. Not dumped\n", | |
095da6e7 | 600 | longname); |
654c61ee | 601 | break; |
415c8aef | 602 | } |
415c8aef BJ |
603 | } |
604 | ||
415c8aef | 605 | doxtract(argv) |
555a248b | 606 | char *argv[]; |
415c8aef BJ |
607 | { |
608 | long blocks, bytes; | |
609 | char buf[TBLOCK]; | |
610 | char **cp; | |
611 | int ofile; | |
612 | ||
613 | for (;;) { | |
614 | getdir(); | |
615 | if (endtape()) | |
616 | break; | |
415c8aef BJ |
617 | if (*argv == 0) |
618 | goto gotit; | |
415c8aef BJ |
619 | for (cp = argv; *cp; cp++) |
620 | if (prefix(*cp, dblock.dbuf.name)) | |
621 | goto gotit; | |
622 | passtape(); | |
623 | continue; | |
624 | ||
625 | gotit: | |
626 | if (checkw('x', dblock.dbuf.name) == 0) { | |
627 | passtape(); | |
628 | continue; | |
629 | } | |
654c61ee SL |
630 | if (Fflag) { |
631 | char *s; | |
632 | ||
633 | if ((s = rindex(dblock.dbuf.name, '/')) == 0) | |
634 | s = dblock.dbuf.name; | |
635 | else | |
636 | s++; | |
637 | if (checkf(s, stbuf.st_mode, Fflag) == 0) { | |
638 | passtape(); | |
639 | continue; | |
640 | } | |
641 | } | |
555a248b | 642 | if (checkdir(dblock.dbuf.name)) |
415c8aef | 643 | continue; |
555a248b BJ |
644 | if (dblock.dbuf.linkflag == '2') { |
645 | unlink(dblock.dbuf.name); | |
646 | if (symlink(dblock.dbuf.linkname, dblock.dbuf.name)<0) { | |
095da6e7 SL |
647 | fprintf(stderr, "tar: %s: symbolic link failed\n", |
648 | dblock.dbuf.name); | |
555a248b BJ |
649 | continue; |
650 | } | |
651 | if (vflag) | |
652 | fprintf(stderr, "x %s symbolic link to %s\n", | |
095da6e7 | 653 | dblock.dbuf.name, dblock.dbuf.linkname); |
dfdd2236 KM |
654 | #ifdef notdef |
655 | /* ignore alien orders */ | |
555a248b BJ |
656 | chown(dblock.dbuf.name, stbuf.st_uid, stbuf.st_gid); |
657 | if (mflag == 0) { | |
828d5b76 | 658 | struct timeval tv[2]; |
555a248b | 659 | |
828d5b76 SL |
660 | tv[0].tv_sec = time(0); |
661 | tv[0].tv_usec = 0; | |
662 | tv[1].tv_sec = stbuf.st_mtime; | |
663 | tv[1].tv_usec = 0; | |
664 | utimes(dblock.dbuf.name, tv); | |
555a248b BJ |
665 | } |
666 | if (pflag) | |
667 | chmod(dblock.dbuf.name, stbuf.st_mode & 07777); | |
dfdd2236 | 668 | #endif |
555a248b BJ |
669 | continue; |
670 | } | |
415c8aef BJ |
671 | if (dblock.dbuf.linkflag == '1') { |
672 | unlink(dblock.dbuf.name); | |
673 | if (link(dblock.dbuf.linkname, dblock.dbuf.name) < 0) { | |
095da6e7 SL |
674 | fprintf(stderr, "tar: %s: cannot link\n", |
675 | dblock.dbuf.name); | |
415c8aef BJ |
676 | continue; |
677 | } | |
678 | if (vflag) | |
06eff236 | 679 | fprintf(stderr, "%s linked to %s\n", |
095da6e7 | 680 | dblock.dbuf.name, dblock.dbuf.linkname); |
415c8aef BJ |
681 | continue; |
682 | } | |
555a248b BJ |
683 | if ((ofile = creat(dblock.dbuf.name,stbuf.st_mode&0xfff)) < 0) { |
684 | fprintf(stderr, "tar: %s - cannot create\n", | |
095da6e7 | 685 | dblock.dbuf.name); |
415c8aef BJ |
686 | passtape(); |
687 | continue; | |
688 | } | |
cd2661db | 689 | chown(dblock.dbuf.name, stbuf.st_uid, stbuf.st_gid); |
415c8aef BJ |
690 | blocks = ((bytes = stbuf.st_size) + TBLOCK-1)/TBLOCK; |
691 | if (vflag) | |
06eff236 | 692 | fprintf(stderr, "x %s, %ld bytes, %ld tape blocks\n", |
095da6e7 | 693 | dblock.dbuf.name, bytes, blocks); |
555a248b | 694 | for (; blocks-- > 0; bytes -= TBLOCK) { |
415c8aef BJ |
695 | readtape(buf); |
696 | if (bytes > TBLOCK) { | |
697 | if (write(ofile, buf, TBLOCK) < 0) { | |
555a248b BJ |
698 | fprintf(stderr, |
699 | "tar: %s: HELP - extract write error\n", | |
095da6e7 | 700 | dblock.dbuf.name); |
415c8aef BJ |
701 | done(2); |
702 | } | |
555a248b BJ |
703 | continue; |
704 | } | |
705 | if (write(ofile, buf, (int) bytes) < 0) { | |
706 | fprintf(stderr, | |
095da6e7 SL |
707 | "tar: %s: HELP - extract write error\n", |
708 | dblock.dbuf.name); | |
555a248b BJ |
709 | done(2); |
710 | } | |
415c8aef BJ |
711 | } |
712 | close(ofile); | |
713 | if (mflag == 0) { | |
828d5b76 | 714 | struct timeval tv[2]; |
415c8aef | 715 | |
828d5b76 SL |
716 | tv[0].tv_sec = time(0); |
717 | tv[0].tv_usec = 0; | |
718 | tv[1].tv_sec = stbuf.st_mtime; | |
719 | tv[1].tv_usec = 0; | |
720 | utimes(dblock.dbuf.name, tv); | |
415c8aef | 721 | } |
cd2661db | 722 | if (pflag) |
555a248b | 723 | chmod(dblock.dbuf.name, stbuf.st_mode & 07777); |
415c8aef BJ |
724 | } |
725 | } | |
726 | ||
727 | dotable() | |
728 | { | |
729 | for (;;) { | |
730 | getdir(); | |
731 | if (endtape()) | |
732 | break; | |
733 | if (vflag) | |
734 | longt(&stbuf); | |
735 | printf("%s", dblock.dbuf.name); | |
736 | if (dblock.dbuf.linkflag == '1') | |
737 | printf(" linked to %s", dblock.dbuf.linkname); | |
555a248b BJ |
738 | if (dblock.dbuf.linkflag == '2') |
739 | printf(" symbolic link to %s", dblock.dbuf.linkname); | |
415c8aef BJ |
740 | printf("\n"); |
741 | passtape(); | |
742 | } | |
743 | } | |
744 | ||
745 | putempty() | |
746 | { | |
747 | char buf[TBLOCK]; | |
415c8aef | 748 | |
095da6e7 | 749 | bzero(buf, sizeof (buf)); |
415c8aef BJ |
750 | writetape(buf); |
751 | } | |
752 | ||
753 | longt(st) | |
555a248b | 754 | register struct stat *st; |
415c8aef BJ |
755 | { |
756 | register char *cp; | |
757 | char *ctime(); | |
758 | ||
759 | pmode(st); | |
760 | printf("%3d/%1d", st->st_uid, st->st_gid); | |
761 | printf("%7D", st->st_size); | |
762 | cp = ctime(&st->st_mtime); | |
763 | printf(" %-12.12s %-4.4s ", cp+4, cp+20); | |
764 | } | |
765 | ||
766 | #define SUID 04000 | |
767 | #define SGID 02000 | |
768 | #define ROWN 0400 | |
769 | #define WOWN 0200 | |
770 | #define XOWN 0100 | |
771 | #define RGRP 040 | |
772 | #define WGRP 020 | |
773 | #define XGRP 010 | |
774 | #define ROTH 04 | |
775 | #define WOTH 02 | |
776 | #define XOTH 01 | |
777 | #define STXT 01000 | |
778 | int m1[] = { 1, ROWN, 'r', '-' }; | |
779 | int m2[] = { 1, WOWN, 'w', '-' }; | |
780 | int m3[] = { 2, SUID, 's', XOWN, 'x', '-' }; | |
781 | int m4[] = { 1, RGRP, 'r', '-' }; | |
782 | int m5[] = { 1, WGRP, 'w', '-' }; | |
783 | int m6[] = { 2, SGID, 's', XGRP, 'x', '-' }; | |
784 | int m7[] = { 1, ROTH, 'r', '-' }; | |
785 | int m8[] = { 1, WOTH, 'w', '-' }; | |
786 | int m9[] = { 2, STXT, 't', XOTH, 'x', '-' }; | |
787 | ||
788 | int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9}; | |
789 | ||
790 | pmode(st) | |
555a248b | 791 | register struct stat *st; |
415c8aef BJ |
792 | { |
793 | register int **mp; | |
794 | ||
795 | for (mp = &m[0]; mp < &m[9];) | |
796 | select(*mp++, st); | |
797 | } | |
798 | ||
799 | select(pairp, st) | |
555a248b BJ |
800 | int *pairp; |
801 | struct stat *st; | |
415c8aef BJ |
802 | { |
803 | register int n, *ap; | |
804 | ||
805 | ap = pairp; | |
806 | n = *ap++; | |
807 | while (--n>=0 && (st->st_mode&*ap++)==0) | |
808 | ap++; | |
809 | printf("%c", *ap); | |
810 | } | |
811 | ||
812 | checkdir(name) | |
555a248b | 813 | register char *name; |
415c8aef BJ |
814 | { |
815 | register char *cp; | |
555a248b | 816 | |
654c61ee SL |
817 | /* |
818 | * Quick check for existance of directory. | |
819 | */ | |
820 | if ((cp = rindex(name, '/')) == 0) | |
821 | return (0); | |
822 | *cp = '\0'; | |
823 | if (access(name, 0) >= 0) { | |
824 | *cp = '/'; | |
825 | return (cp[1] == '\0'); | |
826 | } | |
827 | *cp = '/'; | |
828 | ||
829 | /* | |
830 | * No luck, try to make all directories in path. | |
831 | */ | |
415c8aef | 832 | for (cp = name; *cp; cp++) { |
555a248b BJ |
833 | if (*cp != '/') |
834 | continue; | |
835 | *cp = '\0'; | |
654c61ee | 836 | if (access(name, 0) < 0) { |
13fc8845 SL |
837 | if (mkdir(name, 0777) < 0) { |
838 | perror(name); | |
654c61ee SL |
839 | *cp = '/'; |
840 | return (0); | |
415c8aef | 841 | } |
555a248b | 842 | chown(name, stbuf.st_uid, stbuf.st_gid); |
07269bf2 | 843 | if (pflag && cp[1] == '\0') |
13fc8845 | 844 | chmod(name, stbuf.st_mode & 0777); |
415c8aef | 845 | } |
555a248b | 846 | *cp = '/'; |
415c8aef | 847 | } |
555a248b | 848 | return (cp[-1]=='/'); |
415c8aef BJ |
849 | } |
850 | ||
851 | onintr() | |
852 | { | |
853 | signal(SIGINT, SIG_IGN); | |
854 | term++; | |
855 | } | |
856 | ||
857 | onquit() | |
858 | { | |
859 | signal(SIGQUIT, SIG_IGN); | |
860 | term++; | |
861 | } | |
862 | ||
863 | onhup() | |
864 | { | |
865 | signal(SIGHUP, SIG_IGN); | |
866 | term++; | |
867 | } | |
868 | ||
869 | onterm() | |
870 | { | |
871 | signal(SIGTERM, SIG_IGN); | |
872 | term++; | |
873 | } | |
874 | ||
875 | tomodes(sp) | |
876 | register struct stat *sp; | |
877 | { | |
878 | register char *cp; | |
879 | ||
880 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
881 | *cp = '\0'; | |
882 | sprintf(dblock.dbuf.mode, "%6o ", sp->st_mode & 07777); | |
883 | sprintf(dblock.dbuf.uid, "%6o ", sp->st_uid); | |
884 | sprintf(dblock.dbuf.gid, "%6o ", sp->st_gid); | |
885 | sprintf(dblock.dbuf.size, "%11lo ", sp->st_size); | |
886 | sprintf(dblock.dbuf.mtime, "%11lo ", sp->st_mtime); | |
887 | } | |
888 | ||
889 | checksum() | |
890 | { | |
891 | register i; | |
892 | register char *cp; | |
893 | ||
555a248b BJ |
894 | for (cp = dblock.dbuf.chksum; |
895 | cp < &dblock.dbuf.chksum[sizeof(dblock.dbuf.chksum)]; cp++) | |
415c8aef BJ |
896 | *cp = ' '; |
897 | i = 0; | |
898 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
899 | i += *cp; | |
555a248b | 900 | return (i); |
415c8aef BJ |
901 | } |
902 | ||
903 | checkw(c, name) | |
555a248b | 904 | char *name; |
415c8aef | 905 | { |
555a248b BJ |
906 | if (!wflag) |
907 | return (1); | |
908 | printf("%c ", c); | |
909 | if (vflag) | |
910 | longt(&stbuf); | |
911 | printf("%s: ", name); | |
912 | return (response() == 'y'); | |
415c8aef BJ |
913 | } |
914 | ||
915 | response() | |
916 | { | |
917 | char c; | |
918 | ||
919 | c = getchar(); | |
920 | if (c != '\n') | |
555a248b BJ |
921 | while (getchar() != '\n') |
922 | ; | |
923 | else | |
924 | c = 'n'; | |
925 | return (c); | |
415c8aef BJ |
926 | } |
927 | ||
654c61ee SL |
928 | checkf(name, mode, howmuch) |
929 | char *name; | |
930 | int mode, howmuch; | |
931 | { | |
932 | int l; | |
933 | ||
934 | if ((mode & S_IFMT) == S_IFDIR) | |
935 | return (strcmp(name, "SCCS") != 0); | |
936 | if ((l = strlen(name)) < 3) | |
937 | return (1); | |
938 | if (howmuch > 1 && name[l-2] == '.' && name[l-1] == 'o') | |
939 | return (0); | |
940 | if (strcmp(name, "core") == 0 || | |
941 | strcmp(name, "errs") == 0 || | |
942 | (howmuch > 1 && strcmp(name, "a.out") == 0)) | |
943 | return (0); | |
944 | /* SHOULD CHECK IF IT IS EXECUTABLE */ | |
945 | return (1); | |
946 | } | |
947 | ||
415c8aef | 948 | checkupdate(arg) |
555a248b | 949 | char *arg; |
415c8aef BJ |
950 | { |
951 | char name[100]; | |
555a248b | 952 | long mtime; |
415c8aef BJ |
953 | daddr_t seekp; |
954 | daddr_t lookup(); | |
955 | ||
956 | rewind(tfile); | |
957 | for (;;) { | |
958 | if ((seekp = lookup(arg)) < 0) | |
555a248b | 959 | return (1); |
415c8aef BJ |
960 | fseek(tfile, seekp, 0); |
961 | fscanf(tfile, "%s %lo", name, &mtime); | |
555a248b | 962 | return (stbuf.st_mtime > mtime); |
415c8aef BJ |
963 | } |
964 | } | |
965 | ||
966 | done(n) | |
967 | { | |
968 | unlink(tname); | |
969 | exit(n); | |
970 | } | |
971 | ||
972 | prefix(s1, s2) | |
555a248b | 973 | register char *s1, *s2; |
415c8aef BJ |
974 | { |
975 | while (*s1) | |
976 | if (*s1++ != *s2++) | |
555a248b | 977 | return (0); |
415c8aef | 978 | if (*s2) |
555a248b BJ |
979 | return (*s2 == '/'); |
980 | return (1); | |
415c8aef BJ |
981 | } |
982 | ||
415c8aef BJ |
983 | #define N 200 |
984 | int njab; | |
555a248b | 985 | |
415c8aef BJ |
986 | daddr_t |
987 | lookup(s) | |
555a248b | 988 | char *s; |
415c8aef BJ |
989 | { |
990 | register i; | |
991 | daddr_t a; | |
992 | ||
993 | for(i=0; s[i]; i++) | |
555a248b | 994 | if (s[i] == ' ') |
415c8aef BJ |
995 | break; |
996 | a = bsrch(s, i, low, high); | |
555a248b | 997 | return (a); |
415c8aef BJ |
998 | } |
999 | ||
1000 | daddr_t | |
1001 | bsrch(s, n, l, h) | |
555a248b BJ |
1002 | daddr_t l, h; |
1003 | char *s; | |
415c8aef BJ |
1004 | { |
1005 | register i, j; | |
1006 | char b[N]; | |
1007 | daddr_t m, m1; | |
1008 | ||
1009 | njab = 0; | |
1010 | ||
1011 | loop: | |
555a248b BJ |
1012 | if (l >= h) |
1013 | return (-1L); | |
415c8aef | 1014 | m = l + (h-l)/2 - N/2; |
555a248b | 1015 | if (m < l) |
415c8aef BJ |
1016 | m = l; |
1017 | fseek(tfile, m, 0); | |
1018 | fread(b, 1, N, tfile); | |
1019 | njab++; | |
1020 | for(i=0; i<N; i++) { | |
555a248b | 1021 | if (b[i] == '\n') |
415c8aef BJ |
1022 | break; |
1023 | m++; | |
1024 | } | |
555a248b BJ |
1025 | if (m >= h) |
1026 | return (-1L); | |
415c8aef BJ |
1027 | m1 = m; |
1028 | j = i; | |
1029 | for(i++; i<N; i++) { | |
1030 | m1++; | |
555a248b | 1031 | if (b[i] == '\n') |
415c8aef BJ |
1032 | break; |
1033 | } | |
1034 | i = cmp(b+j, s, n); | |
555a248b | 1035 | if (i < 0) { |
415c8aef BJ |
1036 | h = m; |
1037 | goto loop; | |
1038 | } | |
555a248b | 1039 | if (i > 0) { |
415c8aef BJ |
1040 | l = m1; |
1041 | goto loop; | |
1042 | } | |
555a248b | 1043 | return (m); |
415c8aef BJ |
1044 | } |
1045 | ||
1046 | cmp(b, s, n) | |
555a248b | 1047 | char *b, *s; |
415c8aef BJ |
1048 | { |
1049 | register i; | |
1050 | ||
555a248b | 1051 | if (b[0] != '\n') |
415c8aef BJ |
1052 | exit(2); |
1053 | for(i=0; i<n; i++) { | |
555a248b BJ |
1054 | if (b[i+1] > s[i]) |
1055 | return (-1); | |
1056 | if (b[i+1] < s[i]) | |
1057 | return (1); | |
415c8aef | 1058 | } |
555a248b | 1059 | return (b[i+1] == ' '? 0 : -1); |
415c8aef BJ |
1060 | } |
1061 | ||
1062 | readtape(buffer) | |
555a248b | 1063 | char *buffer; |
415c8aef | 1064 | { |
06eff236 | 1065 | register int i; |
415c8aef BJ |
1066 | |
1067 | if (recno >= nblock || first == 0) { | |
8678ae71 | 1068 | if ((i = bread(mt, tbuf, TBLOCK*nblock)) < 0) { |
095da6e7 | 1069 | fprintf(stderr, "tar: tape read error\n"); |
415c8aef BJ |
1070 | done(3); |
1071 | } | |
1072 | if (first == 0) { | |
1073 | if ((i % TBLOCK) != 0) { | |
095da6e7 | 1074 | fprintf(stderr, "tar: tape blocksize error\n"); |
415c8aef BJ |
1075 | done(3); |
1076 | } | |
1077 | i /= TBLOCK; | |
06eff236 | 1078 | if (i != nblock) { |
095da6e7 | 1079 | fprintf(stderr, "tar: blocksize = %d\n", i); |
415c8aef BJ |
1080 | nblock = i; |
1081 | } | |
1082 | } | |
1083 | recno = 0; | |
1084 | } | |
1085 | first = 1; | |
095da6e7 | 1086 | bcopy((char *)&tbuf[recno++], buffer, TBLOCK); |
555a248b | 1087 | return (TBLOCK); |
415c8aef BJ |
1088 | } |
1089 | ||
1090 | writetape(buffer) | |
555a248b | 1091 | char *buffer; |
415c8aef BJ |
1092 | { |
1093 | first = 1; | |
415c8aef BJ |
1094 | if (recno >= nblock) { |
1095 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
095da6e7 | 1096 | fprintf(stderr, "tar: tape write error\n"); |
415c8aef BJ |
1097 | done(2); |
1098 | } | |
1099 | recno = 0; | |
1100 | } | |
095da6e7 | 1101 | bcopy(buffer, (char *)&tbuf[recno++], TBLOCK); |
415c8aef BJ |
1102 | if (recno >= nblock) { |
1103 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
095da6e7 | 1104 | fprintf(stderr, "tar: tape write error\n"); |
415c8aef BJ |
1105 | done(2); |
1106 | } | |
1107 | recno = 0; | |
1108 | } | |
555a248b | 1109 | return (TBLOCK); |
415c8aef BJ |
1110 | } |
1111 | ||
1112 | backtape() | |
1113 | { | |
06eff236 BJ |
1114 | static int mtdev = 1; |
1115 | static struct mtop mtop = {MTBSR, 1}; | |
1116 | struct mtget mtget; | |
1117 | ||
1118 | if (mtdev == 1) | |
1119 | mtdev = ioctl(mt, MTIOCGET, &mtget); | |
1120 | if (mtdev == 0) { | |
1121 | if (ioctl(mt, MTIOCTOP, &mtop) < 0) { | |
095da6e7 | 1122 | fprintf(stderr, "tar: tape backspace error\n"); |
415c8aef BJ |
1123 | done(4); |
1124 | } | |
06eff236 BJ |
1125 | } else |
1126 | lseek(mt, (long) -TBLOCK*nblock, 1); | |
1127 | recno--; | |
415c8aef BJ |
1128 | } |
1129 | ||
1130 | flushtape() | |
1131 | { | |
1132 | write(mt, tbuf, TBLOCK*nblock); | |
1133 | } | |
1134 | ||
8678ae71 KM |
1135 | bread(fd, buf, size) |
1136 | int fd; | |
1137 | char *buf; | |
1138 | int size; | |
1139 | { | |
1140 | int count; | |
1141 | static int lastread = 0; | |
1142 | ||
1143 | if (!Bflag) | |
1144 | return (read(fd, buf, size)); | |
1145 | for (count = 0; count < size; count += lastread) { | |
1146 | if (lastread < 0) { | |
1147 | if (count > 0) | |
1148 | return (count); | |
1149 | return (lastread); | |
1150 | } | |
1151 | lastread = read(fd, buf, size - count); | |
1152 | buf += lastread; | |
1153 | } | |
1154 | return (count); | |
1155 | } | |
5ee3622a SL |
1156 | |
1157 | char * | |
1158 | getcwd(buf) | |
1159 | char *buf; | |
1160 | { | |
1161 | ||
1162 | if (getwd(buf) == NULL) { | |
1163 | fprintf(stderr, "tar: %s\n", buf); | |
1164 | exit(1); | |
1165 | } | |
1166 | return (buf); | |
1167 | } |