Commit | Line | Data |
---|---|---|
654c61ee | 1 | #ifndef lint |
07269bf2 | 2 | static char *sccsid = "@(#)tar.c 4.18 (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); |
415c8aef BJ |
336 | chdir(wdir); |
337 | } | |
338 | putempty(); | |
339 | putempty(); | |
340 | flushtape(); | |
555a248b BJ |
341 | if (linkerrok == 0) |
342 | return; | |
343 | for (; ihead != NULL; ihead = ihead->nextp) { | |
344 | if (ihead->count == 0) | |
345 | continue; | |
095da6e7 | 346 | fprintf(stderr, "tar: missing links to %s\n", ihead->pathname); |
555a248b | 347 | } |
415c8aef BJ |
348 | } |
349 | ||
350 | endtape() | |
351 | { | |
095da6e7 | 352 | return (dblock.dbuf.name[0] == '\0'); |
415c8aef BJ |
353 | } |
354 | ||
355 | getdir() | |
356 | { | |
357 | register struct stat *sp; | |
358 | int i; | |
359 | ||
654c61ee | 360 | top: |
555a248b | 361 | readtape((char *)&dblock); |
415c8aef BJ |
362 | if (dblock.dbuf.name[0] == '\0') |
363 | return; | |
364 | sp = &stbuf; | |
365 | sscanf(dblock.dbuf.mode, "%o", &i); | |
366 | sp->st_mode = i; | |
367 | sscanf(dblock.dbuf.uid, "%o", &i); | |
368 | sp->st_uid = i; | |
369 | sscanf(dblock.dbuf.gid, "%o", &i); | |
370 | sp->st_gid = i; | |
371 | sscanf(dblock.dbuf.size, "%lo", &sp->st_size); | |
372 | sscanf(dblock.dbuf.mtime, "%lo", &sp->st_mtime); | |
373 | sscanf(dblock.dbuf.chksum, "%o", &chksum); | |
654c61ee | 374 | if (chksum != (i = checksum())) { |
095da6e7 | 375 | fprintf(stderr, "tar: directory checksum error (%d != %d)\n", |
654c61ee SL |
376 | chksum, i); |
377 | if (iflag) | |
378 | goto top; | |
415c8aef BJ |
379 | done(2); |
380 | } | |
381 | if (tfile != NULL) | |
382 | fprintf(tfile, "%s %s\n", dblock.dbuf.name, dblock.dbuf.mtime); | |
383 | } | |
384 | ||
385 | passtape() | |
386 | { | |
387 | long blocks; | |
388 | char buf[TBLOCK]; | |
389 | ||
390 | if (dblock.dbuf.linkflag == '1') | |
391 | return; | |
392 | blocks = stbuf.st_size; | |
393 | blocks += TBLOCK-1; | |
394 | blocks /= TBLOCK; | |
395 | ||
396 | while (blocks-- > 0) | |
397 | readtape(buf); | |
398 | } | |
399 | ||
f21b792d | 400 | putfile(longname, shortname, parent) |
555a248b BJ |
401 | char *longname; |
402 | char *shortname; | |
f21b792d | 403 | char *parent; |
415c8aef | 404 | { |
654c61ee | 405 | int infile = 0; |
415c8aef BJ |
406 | long blocks; |
407 | char buf[TBLOCK]; | |
408 | register char *cp, *cp2; | |
aeb5c9b4 KM |
409 | struct direct *dp; |
410 | DIR *dirp; | |
415c8aef | 411 | int i, j; |
f21b792d | 412 | char newparent[NAMSIZ+64]; |
654c61ee | 413 | extern int errno; |
415c8aef | 414 | |
f21b792d | 415 | if (!hflag) |
654c61ee SL |
416 | i = lstat(shortname, &stbuf); |
417 | else | |
418 | i = stat(shortname, &stbuf); | |
419 | if (i < 0) { | |
420 | switch (errno) { | |
421 | case EACCES: | |
422 | fprintf(stderr, "tar: %s: cannot open file\n", longname); | |
423 | break; | |
424 | case ENOENT: | |
425 | fprintf(stderr, "tar: %s: no such file or directory\n", | |
426 | longname); | |
427 | break; | |
428 | default: | |
429 | fprintf(stderr, "tar: %s: cannot stat file\n", longname); | |
430 | break; | |
431 | } | |
f21b792d SL |
432 | return; |
433 | } | |
654c61ee | 434 | if (tfile != NULL && checkupdate(longname) == 0) |
415c8aef | 435 | return; |
654c61ee SL |
436 | if (checkw('r', longname) == 0) |
437 | return; | |
438 | if (Fflag && checkf(shortname, stbuf.st_mode, Fflag) == 0) | |
415c8aef | 439 | return; |
415c8aef | 440 | |
654c61ee SL |
441 | switch (stbuf.st_mode & S_IFMT) { |
442 | case S_IFDIR: | |
555a248b BJ |
443 | for (i = 0, cp = buf; *cp++ = longname[i++];) |
444 | ; | |
415c8aef BJ |
445 | *--cp = '/'; |
446 | *++cp = 0 ; | |
415c8aef | 447 | if (!oflag) { |
555a248b | 448 | if ((cp - buf) >= NAMSIZ) { |
095da6e7 SL |
449 | fprintf(stderr, "tar: %s: file name too long\n", |
450 | longname); | |
555a248b BJ |
451 | return; |
452 | } | |
453 | stbuf.st_size = 0; | |
454 | tomodes(&stbuf); | |
455 | strcpy(dblock.dbuf.name,buf); | |
456 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
457 | writetape((char *)&dblock); | |
415c8aef | 458 | } |
f21b792d | 459 | sprintf(newparent, "%s/%s", parent, shortname); |
415c8aef | 460 | chdir(shortname); |
aeb5c9b4 | 461 | if ((dirp = opendir(".")) == NULL) { |
095da6e7 SL |
462 | fprintf(stderr, "tar: %s: directory read error\n", |
463 | longname); | |
f21b792d | 464 | chdir(parent); |
aeb5c9b4 KM |
465 | return; |
466 | } | |
467 | while ((dp = readdir(dirp)) != NULL && !term) { | |
468 | if (dp->d_ino == 0) | |
415c8aef | 469 | continue; |
555a248b BJ |
470 | if (!strcmp(".", dp->d_name) || |
471 | !strcmp("..", dp->d_name)) | |
415c8aef | 472 | continue; |
aeb5c9b4 KM |
473 | strcpy(cp, dp->d_name); |
474 | i = telldir(dirp); | |
475 | closedir(dirp); | |
f21b792d | 476 | putfile(buf, cp, newparent); |
aeb5c9b4 KM |
477 | dirp = opendir("."); |
478 | seekdir(dirp, i); | |
415c8aef | 479 | } |
aeb5c9b4 | 480 | closedir(dirp); |
f21b792d | 481 | chdir(parent); |
654c61ee SL |
482 | break; |
483 | ||
484 | case S_IFLNK: | |
485 | tomodes(&stbuf); | |
486 | if (strlen(longname) >= NAMSIZ) { | |
095da6e7 SL |
487 | fprintf(stderr, "tar: %s: file name too long\n", |
488 | longname); | |
654c61ee SL |
489 | return; |
490 | } | |
491 | strcpy(dblock.dbuf.name, longname); | |
555a248b | 492 | if (stbuf.st_size + 1 >= NAMSIZ) { |
095da6e7 SL |
493 | fprintf(stderr, "tar: %s: symbolic link too long\n", |
494 | longname); | |
555a248b BJ |
495 | return; |
496 | } | |
f21b792d | 497 | i = readlink(shortname, dblock.dbuf.linkname, NAMSIZ - 1); |
555a248b | 498 | if (i < 0) { |
f21b792d | 499 | perror(longname); |
555a248b BJ |
500 | return; |
501 | } | |
502 | dblock.dbuf.linkname[i] = '\0'; | |
503 | dblock.dbuf.linkflag = '2'; | |
504 | if (vflag) { | |
505 | fprintf(stderr, "a %s ", longname); | |
506 | fprintf(stderr, "symbolic link to %s\n", | |
095da6e7 | 507 | dblock.dbuf.linkname); |
555a248b BJ |
508 | } |
509 | sprintf(dblock.dbuf.size, "%11lo", 0); | |
510 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
511 | writetape((char *)&dblock); | |
654c61ee SL |
512 | break; |
513 | ||
514 | case S_IFREG: | |
515 | if ((infile = open(shortname, 0)) < 0) { | |
516 | fprintf(stderr, "tar: %s: cannot open file\n", longname); | |
415c8aef BJ |
517 | return; |
518 | } | |
654c61ee SL |
519 | tomodes(&stbuf); |
520 | if (strlen(longname) >= NAMSIZ) { | |
095da6e7 SL |
521 | fprintf(stderr, "tar: %s: file name too long\n", |
522 | longname); | |
654c61ee SL |
523 | return; |
524 | } | |
525 | strcpy(dblock.dbuf.name, longname); | |
526 | if (stbuf.st_nlink > 1) { | |
527 | struct linkbuf *lp; | |
528 | int found = 0; | |
529 | ||
530 | for (lp = ihead; lp != NULL; lp = lp->nextp) | |
531 | if (lp->inum == stbuf.st_ino && | |
532 | lp->devnum == stbuf.st_dev) { | |
533 | found++; | |
534 | break; | |
535 | } | |
536 | if (found) { | |
537 | strcpy(dblock.dbuf.linkname, lp->pathname); | |
538 | dblock.dbuf.linkflag = '1'; | |
539 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
540 | writetape( (char *) &dblock); | |
541 | if (vflag) { | |
542 | fprintf(stderr, "a %s ", longname); | |
095da6e7 SL |
543 | fprintf(stderr, "link to %s\n", |
544 | lp->pathname); | |
654c61ee SL |
545 | } |
546 | lp->count--; | |
547 | close(infile); | |
548 | return; | |
549 | } | |
550 | lp = (struct linkbuf *) malloc(sizeof(*lp)); | |
551 | if (lp == NULL) { | |
552 | if (freemem) { | |
553 | fprintf(stderr, | |
095da6e7 | 554 | "tar: out of memory, link information lost\n"); |
654c61ee SL |
555 | freemem = 0; |
556 | } | |
557 | } else { | |
558 | lp->nextp = ihead; | |
559 | ihead = lp; | |
560 | lp->inum = stbuf.st_ino; | |
561 | lp->devnum = stbuf.st_dev; | |
562 | lp->count = stbuf.st_nlink - 1; | |
563 | strcpy(lp->pathname, longname); | |
415c8aef BJ |
564 | } |
565 | } | |
654c61ee SL |
566 | blocks = (stbuf.st_size + (TBLOCK-1)) / TBLOCK; |
567 | if (vflag) { | |
568 | fprintf(stderr, "a %s ", longname); | |
569 | fprintf(stderr, "%ld blocks\n", blocks); | |
570 | } | |
571 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
572 | writetape((char *)&dblock); | |
415c8aef | 573 | |
654c61ee SL |
574 | while ((i = read(infile, buf, TBLOCK)) > 0 && blocks > 0) { |
575 | writetape(buf); | |
576 | blocks--; | |
577 | } | |
578 | close(infile); | |
579 | if (blocks != 0 || i != 0) | |
095da6e7 SL |
580 | fprintf(stderr, "tar: %s: file changed size\n", |
581 | longname); | |
654c61ee SL |
582 | while (--blocks >= 0) |
583 | putempty(); | |
584 | break; | |
585 | ||
586 | default: | |
587 | fprintf(stderr, "tar: %s is not a file. Not dumped\n", | |
095da6e7 | 588 | longname); |
654c61ee | 589 | break; |
415c8aef | 590 | } |
415c8aef BJ |
591 | } |
592 | ||
415c8aef | 593 | doxtract(argv) |
555a248b | 594 | char *argv[]; |
415c8aef BJ |
595 | { |
596 | long blocks, bytes; | |
597 | char buf[TBLOCK]; | |
598 | char **cp; | |
599 | int ofile; | |
600 | ||
601 | for (;;) { | |
602 | getdir(); | |
603 | if (endtape()) | |
604 | break; | |
415c8aef BJ |
605 | if (*argv == 0) |
606 | goto gotit; | |
415c8aef BJ |
607 | for (cp = argv; *cp; cp++) |
608 | if (prefix(*cp, dblock.dbuf.name)) | |
609 | goto gotit; | |
610 | passtape(); | |
611 | continue; | |
612 | ||
613 | gotit: | |
614 | if (checkw('x', dblock.dbuf.name) == 0) { | |
615 | passtape(); | |
616 | continue; | |
617 | } | |
654c61ee SL |
618 | if (Fflag) { |
619 | char *s; | |
620 | ||
621 | if ((s = rindex(dblock.dbuf.name, '/')) == 0) | |
622 | s = dblock.dbuf.name; | |
623 | else | |
624 | s++; | |
625 | if (checkf(s, stbuf.st_mode, Fflag) == 0) { | |
626 | passtape(); | |
627 | continue; | |
628 | } | |
629 | } | |
555a248b | 630 | if (checkdir(dblock.dbuf.name)) |
415c8aef | 631 | continue; |
555a248b BJ |
632 | if (dblock.dbuf.linkflag == '2') { |
633 | unlink(dblock.dbuf.name); | |
634 | if (symlink(dblock.dbuf.linkname, dblock.dbuf.name)<0) { | |
095da6e7 SL |
635 | fprintf(stderr, "tar: %s: symbolic link failed\n", |
636 | dblock.dbuf.name); | |
555a248b BJ |
637 | continue; |
638 | } | |
639 | if (vflag) | |
640 | fprintf(stderr, "x %s symbolic link to %s\n", | |
095da6e7 | 641 | dblock.dbuf.name, dblock.dbuf.linkname); |
dfdd2236 KM |
642 | #ifdef notdef |
643 | /* ignore alien orders */ | |
555a248b BJ |
644 | chown(dblock.dbuf.name, stbuf.st_uid, stbuf.st_gid); |
645 | if (mflag == 0) { | |
828d5b76 | 646 | struct timeval tv[2]; |
555a248b | 647 | |
828d5b76 SL |
648 | tv[0].tv_sec = time(0); |
649 | tv[0].tv_usec = 0; | |
650 | tv[1].tv_sec = stbuf.st_mtime; | |
651 | tv[1].tv_usec = 0; | |
652 | utimes(dblock.dbuf.name, tv); | |
555a248b BJ |
653 | } |
654 | if (pflag) | |
655 | chmod(dblock.dbuf.name, stbuf.st_mode & 07777); | |
dfdd2236 | 656 | #endif |
555a248b BJ |
657 | continue; |
658 | } | |
415c8aef BJ |
659 | if (dblock.dbuf.linkflag == '1') { |
660 | unlink(dblock.dbuf.name); | |
661 | if (link(dblock.dbuf.linkname, dblock.dbuf.name) < 0) { | |
095da6e7 SL |
662 | fprintf(stderr, "tar: %s: cannot link\n", |
663 | dblock.dbuf.name); | |
415c8aef BJ |
664 | continue; |
665 | } | |
666 | if (vflag) | |
06eff236 | 667 | fprintf(stderr, "%s linked to %s\n", |
095da6e7 | 668 | dblock.dbuf.name, dblock.dbuf.linkname); |
415c8aef BJ |
669 | continue; |
670 | } | |
555a248b BJ |
671 | if ((ofile = creat(dblock.dbuf.name,stbuf.st_mode&0xfff)) < 0) { |
672 | fprintf(stderr, "tar: %s - cannot create\n", | |
095da6e7 | 673 | dblock.dbuf.name); |
415c8aef BJ |
674 | passtape(); |
675 | continue; | |
676 | } | |
cd2661db | 677 | chown(dblock.dbuf.name, stbuf.st_uid, stbuf.st_gid); |
415c8aef BJ |
678 | blocks = ((bytes = stbuf.st_size) + TBLOCK-1)/TBLOCK; |
679 | if (vflag) | |
06eff236 | 680 | fprintf(stderr, "x %s, %ld bytes, %ld tape blocks\n", |
095da6e7 | 681 | dblock.dbuf.name, bytes, blocks); |
555a248b | 682 | for (; blocks-- > 0; bytes -= TBLOCK) { |
415c8aef BJ |
683 | readtape(buf); |
684 | if (bytes > TBLOCK) { | |
685 | if (write(ofile, buf, TBLOCK) < 0) { | |
555a248b BJ |
686 | fprintf(stderr, |
687 | "tar: %s: HELP - extract write error\n", | |
095da6e7 | 688 | dblock.dbuf.name); |
415c8aef BJ |
689 | done(2); |
690 | } | |
555a248b BJ |
691 | continue; |
692 | } | |
693 | if (write(ofile, buf, (int) bytes) < 0) { | |
694 | fprintf(stderr, | |
095da6e7 SL |
695 | "tar: %s: HELP - extract write error\n", |
696 | dblock.dbuf.name); | |
555a248b BJ |
697 | done(2); |
698 | } | |
415c8aef BJ |
699 | } |
700 | close(ofile); | |
701 | if (mflag == 0) { | |
828d5b76 | 702 | struct timeval tv[2]; |
415c8aef | 703 | |
828d5b76 SL |
704 | tv[0].tv_sec = time(0); |
705 | tv[0].tv_usec = 0; | |
706 | tv[1].tv_sec = stbuf.st_mtime; | |
707 | tv[1].tv_usec = 0; | |
708 | utimes(dblock.dbuf.name, tv); | |
415c8aef | 709 | } |
cd2661db | 710 | if (pflag) |
555a248b | 711 | chmod(dblock.dbuf.name, stbuf.st_mode & 07777); |
415c8aef BJ |
712 | } |
713 | } | |
714 | ||
715 | dotable() | |
716 | { | |
717 | for (;;) { | |
718 | getdir(); | |
719 | if (endtape()) | |
720 | break; | |
721 | if (vflag) | |
722 | longt(&stbuf); | |
723 | printf("%s", dblock.dbuf.name); | |
724 | if (dblock.dbuf.linkflag == '1') | |
725 | printf(" linked to %s", dblock.dbuf.linkname); | |
555a248b BJ |
726 | if (dblock.dbuf.linkflag == '2') |
727 | printf(" symbolic link to %s", dblock.dbuf.linkname); | |
415c8aef BJ |
728 | printf("\n"); |
729 | passtape(); | |
730 | } | |
731 | } | |
732 | ||
733 | putempty() | |
734 | { | |
735 | char buf[TBLOCK]; | |
415c8aef | 736 | |
095da6e7 | 737 | bzero(buf, sizeof (buf)); |
415c8aef BJ |
738 | writetape(buf); |
739 | } | |
740 | ||
741 | longt(st) | |
555a248b | 742 | register struct stat *st; |
415c8aef BJ |
743 | { |
744 | register char *cp; | |
745 | char *ctime(); | |
746 | ||
747 | pmode(st); | |
748 | printf("%3d/%1d", st->st_uid, st->st_gid); | |
749 | printf("%7D", st->st_size); | |
750 | cp = ctime(&st->st_mtime); | |
751 | printf(" %-12.12s %-4.4s ", cp+4, cp+20); | |
752 | } | |
753 | ||
754 | #define SUID 04000 | |
755 | #define SGID 02000 | |
756 | #define ROWN 0400 | |
757 | #define WOWN 0200 | |
758 | #define XOWN 0100 | |
759 | #define RGRP 040 | |
760 | #define WGRP 020 | |
761 | #define XGRP 010 | |
762 | #define ROTH 04 | |
763 | #define WOTH 02 | |
764 | #define XOTH 01 | |
765 | #define STXT 01000 | |
766 | int m1[] = { 1, ROWN, 'r', '-' }; | |
767 | int m2[] = { 1, WOWN, 'w', '-' }; | |
768 | int m3[] = { 2, SUID, 's', XOWN, 'x', '-' }; | |
769 | int m4[] = { 1, RGRP, 'r', '-' }; | |
770 | int m5[] = { 1, WGRP, 'w', '-' }; | |
771 | int m6[] = { 2, SGID, 's', XGRP, 'x', '-' }; | |
772 | int m7[] = { 1, ROTH, 'r', '-' }; | |
773 | int m8[] = { 1, WOTH, 'w', '-' }; | |
774 | int m9[] = { 2, STXT, 't', XOTH, 'x', '-' }; | |
775 | ||
776 | int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9}; | |
777 | ||
778 | pmode(st) | |
555a248b | 779 | register struct stat *st; |
415c8aef BJ |
780 | { |
781 | register int **mp; | |
782 | ||
783 | for (mp = &m[0]; mp < &m[9];) | |
784 | select(*mp++, st); | |
785 | } | |
786 | ||
787 | select(pairp, st) | |
555a248b BJ |
788 | int *pairp; |
789 | struct stat *st; | |
415c8aef BJ |
790 | { |
791 | register int n, *ap; | |
792 | ||
793 | ap = pairp; | |
794 | n = *ap++; | |
795 | while (--n>=0 && (st->st_mode&*ap++)==0) | |
796 | ap++; | |
797 | printf("%c", *ap); | |
798 | } | |
799 | ||
800 | checkdir(name) | |
555a248b | 801 | register char *name; |
415c8aef BJ |
802 | { |
803 | register char *cp; | |
555a248b | 804 | |
654c61ee SL |
805 | /* |
806 | * Quick check for existance of directory. | |
807 | */ | |
808 | if ((cp = rindex(name, '/')) == 0) | |
809 | return (0); | |
810 | *cp = '\0'; | |
811 | if (access(name, 0) >= 0) { | |
812 | *cp = '/'; | |
813 | return (cp[1] == '\0'); | |
814 | } | |
815 | *cp = '/'; | |
816 | ||
817 | /* | |
818 | * No luck, try to make all directories in path. | |
819 | */ | |
415c8aef | 820 | for (cp = name; *cp; cp++) { |
555a248b BJ |
821 | if (*cp != '/') |
822 | continue; | |
823 | *cp = '\0'; | |
654c61ee | 824 | if (access(name, 0) < 0) { |
13fc8845 SL |
825 | if (mkdir(name, 0777) < 0) { |
826 | perror(name); | |
654c61ee SL |
827 | *cp = '/'; |
828 | return (0); | |
415c8aef | 829 | } |
555a248b | 830 | chown(name, stbuf.st_uid, stbuf.st_gid); |
07269bf2 | 831 | if (pflag && cp[1] == '\0') |
13fc8845 | 832 | chmod(name, stbuf.st_mode & 0777); |
415c8aef | 833 | } |
555a248b | 834 | *cp = '/'; |
415c8aef | 835 | } |
555a248b | 836 | return (cp[-1]=='/'); |
415c8aef BJ |
837 | } |
838 | ||
839 | onintr() | |
840 | { | |
841 | signal(SIGINT, SIG_IGN); | |
842 | term++; | |
843 | } | |
844 | ||
845 | onquit() | |
846 | { | |
847 | signal(SIGQUIT, SIG_IGN); | |
848 | term++; | |
849 | } | |
850 | ||
851 | onhup() | |
852 | { | |
853 | signal(SIGHUP, SIG_IGN); | |
854 | term++; | |
855 | } | |
856 | ||
857 | onterm() | |
858 | { | |
859 | signal(SIGTERM, SIG_IGN); | |
860 | term++; | |
861 | } | |
862 | ||
863 | tomodes(sp) | |
864 | register struct stat *sp; | |
865 | { | |
866 | register char *cp; | |
867 | ||
868 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
869 | *cp = '\0'; | |
870 | sprintf(dblock.dbuf.mode, "%6o ", sp->st_mode & 07777); | |
871 | sprintf(dblock.dbuf.uid, "%6o ", sp->st_uid); | |
872 | sprintf(dblock.dbuf.gid, "%6o ", sp->st_gid); | |
873 | sprintf(dblock.dbuf.size, "%11lo ", sp->st_size); | |
874 | sprintf(dblock.dbuf.mtime, "%11lo ", sp->st_mtime); | |
875 | } | |
876 | ||
877 | checksum() | |
878 | { | |
879 | register i; | |
880 | register char *cp; | |
881 | ||
555a248b BJ |
882 | for (cp = dblock.dbuf.chksum; |
883 | cp < &dblock.dbuf.chksum[sizeof(dblock.dbuf.chksum)]; cp++) | |
415c8aef BJ |
884 | *cp = ' '; |
885 | i = 0; | |
886 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
887 | i += *cp; | |
555a248b | 888 | return (i); |
415c8aef BJ |
889 | } |
890 | ||
891 | checkw(c, name) | |
555a248b | 892 | char *name; |
415c8aef | 893 | { |
555a248b BJ |
894 | if (!wflag) |
895 | return (1); | |
896 | printf("%c ", c); | |
897 | if (vflag) | |
898 | longt(&stbuf); | |
899 | printf("%s: ", name); | |
900 | return (response() == 'y'); | |
415c8aef BJ |
901 | } |
902 | ||
903 | response() | |
904 | { | |
905 | char c; | |
906 | ||
907 | c = getchar(); | |
908 | if (c != '\n') | |
555a248b BJ |
909 | while (getchar() != '\n') |
910 | ; | |
911 | else | |
912 | c = 'n'; | |
913 | return (c); | |
415c8aef BJ |
914 | } |
915 | ||
654c61ee SL |
916 | checkf(name, mode, howmuch) |
917 | char *name; | |
918 | int mode, howmuch; | |
919 | { | |
920 | int l; | |
921 | ||
922 | if ((mode & S_IFMT) == S_IFDIR) | |
923 | return (strcmp(name, "SCCS") != 0); | |
924 | if ((l = strlen(name)) < 3) | |
925 | return (1); | |
926 | if (howmuch > 1 && name[l-2] == '.' && name[l-1] == 'o') | |
927 | return (0); | |
928 | if (strcmp(name, "core") == 0 || | |
929 | strcmp(name, "errs") == 0 || | |
930 | (howmuch > 1 && strcmp(name, "a.out") == 0)) | |
931 | return (0); | |
932 | /* SHOULD CHECK IF IT IS EXECUTABLE */ | |
933 | return (1); | |
934 | } | |
935 | ||
415c8aef | 936 | checkupdate(arg) |
555a248b | 937 | char *arg; |
415c8aef BJ |
938 | { |
939 | char name[100]; | |
555a248b | 940 | long mtime; |
415c8aef BJ |
941 | daddr_t seekp; |
942 | daddr_t lookup(); | |
943 | ||
944 | rewind(tfile); | |
945 | for (;;) { | |
946 | if ((seekp = lookup(arg)) < 0) | |
555a248b | 947 | return (1); |
415c8aef BJ |
948 | fseek(tfile, seekp, 0); |
949 | fscanf(tfile, "%s %lo", name, &mtime); | |
555a248b | 950 | return (stbuf.st_mtime > mtime); |
415c8aef BJ |
951 | } |
952 | } | |
953 | ||
954 | done(n) | |
955 | { | |
956 | unlink(tname); | |
957 | exit(n); | |
958 | } | |
959 | ||
960 | prefix(s1, s2) | |
555a248b | 961 | register char *s1, *s2; |
415c8aef BJ |
962 | { |
963 | while (*s1) | |
964 | if (*s1++ != *s2++) | |
555a248b | 965 | return (0); |
415c8aef | 966 | if (*s2) |
555a248b BJ |
967 | return (*s2 == '/'); |
968 | return (1); | |
415c8aef BJ |
969 | } |
970 | ||
415c8aef BJ |
971 | #define N 200 |
972 | int njab; | |
555a248b | 973 | |
415c8aef BJ |
974 | daddr_t |
975 | lookup(s) | |
555a248b | 976 | char *s; |
415c8aef BJ |
977 | { |
978 | register i; | |
979 | daddr_t a; | |
980 | ||
981 | for(i=0; s[i]; i++) | |
555a248b | 982 | if (s[i] == ' ') |
415c8aef BJ |
983 | break; |
984 | a = bsrch(s, i, low, high); | |
555a248b | 985 | return (a); |
415c8aef BJ |
986 | } |
987 | ||
988 | daddr_t | |
989 | bsrch(s, n, l, h) | |
555a248b BJ |
990 | daddr_t l, h; |
991 | char *s; | |
415c8aef BJ |
992 | { |
993 | register i, j; | |
994 | char b[N]; | |
995 | daddr_t m, m1; | |
996 | ||
997 | njab = 0; | |
998 | ||
999 | loop: | |
555a248b BJ |
1000 | if (l >= h) |
1001 | return (-1L); | |
415c8aef | 1002 | m = l + (h-l)/2 - N/2; |
555a248b | 1003 | if (m < l) |
415c8aef BJ |
1004 | m = l; |
1005 | fseek(tfile, m, 0); | |
1006 | fread(b, 1, N, tfile); | |
1007 | njab++; | |
1008 | for(i=0; i<N; i++) { | |
555a248b | 1009 | if (b[i] == '\n') |
415c8aef BJ |
1010 | break; |
1011 | m++; | |
1012 | } | |
555a248b BJ |
1013 | if (m >= h) |
1014 | return (-1L); | |
415c8aef BJ |
1015 | m1 = m; |
1016 | j = i; | |
1017 | for(i++; i<N; i++) { | |
1018 | m1++; | |
555a248b | 1019 | if (b[i] == '\n') |
415c8aef BJ |
1020 | break; |
1021 | } | |
1022 | i = cmp(b+j, s, n); | |
555a248b | 1023 | if (i < 0) { |
415c8aef BJ |
1024 | h = m; |
1025 | goto loop; | |
1026 | } | |
555a248b | 1027 | if (i > 0) { |
415c8aef BJ |
1028 | l = m1; |
1029 | goto loop; | |
1030 | } | |
555a248b | 1031 | return (m); |
415c8aef BJ |
1032 | } |
1033 | ||
1034 | cmp(b, s, n) | |
555a248b | 1035 | char *b, *s; |
415c8aef BJ |
1036 | { |
1037 | register i; | |
1038 | ||
555a248b | 1039 | if (b[0] != '\n') |
415c8aef BJ |
1040 | exit(2); |
1041 | for(i=0; i<n; i++) { | |
555a248b BJ |
1042 | if (b[i+1] > s[i]) |
1043 | return (-1); | |
1044 | if (b[i+1] < s[i]) | |
1045 | return (1); | |
415c8aef | 1046 | } |
555a248b | 1047 | return (b[i+1] == ' '? 0 : -1); |
415c8aef BJ |
1048 | } |
1049 | ||
1050 | readtape(buffer) | |
555a248b | 1051 | char *buffer; |
415c8aef | 1052 | { |
06eff236 | 1053 | register int i; |
415c8aef BJ |
1054 | |
1055 | if (recno >= nblock || first == 0) { | |
8678ae71 | 1056 | if ((i = bread(mt, tbuf, TBLOCK*nblock)) < 0) { |
095da6e7 | 1057 | fprintf(stderr, "tar: tape read error\n"); |
415c8aef BJ |
1058 | done(3); |
1059 | } | |
1060 | if (first == 0) { | |
1061 | if ((i % TBLOCK) != 0) { | |
095da6e7 | 1062 | fprintf(stderr, "tar: tape blocksize error\n"); |
415c8aef BJ |
1063 | done(3); |
1064 | } | |
1065 | i /= TBLOCK; | |
06eff236 | 1066 | if (i != nblock) { |
095da6e7 | 1067 | fprintf(stderr, "tar: blocksize = %d\n", i); |
415c8aef BJ |
1068 | nblock = i; |
1069 | } | |
1070 | } | |
1071 | recno = 0; | |
1072 | } | |
1073 | first = 1; | |
095da6e7 | 1074 | bcopy((char *)&tbuf[recno++], buffer, TBLOCK); |
555a248b | 1075 | return (TBLOCK); |
415c8aef BJ |
1076 | } |
1077 | ||
1078 | writetape(buffer) | |
555a248b | 1079 | char *buffer; |
415c8aef BJ |
1080 | { |
1081 | first = 1; | |
415c8aef BJ |
1082 | if (recno >= nblock) { |
1083 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
095da6e7 | 1084 | fprintf(stderr, "tar: tape write error\n"); |
415c8aef BJ |
1085 | done(2); |
1086 | } | |
1087 | recno = 0; | |
1088 | } | |
095da6e7 | 1089 | bcopy(buffer, (char *)&tbuf[recno++], TBLOCK); |
415c8aef BJ |
1090 | if (recno >= nblock) { |
1091 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
095da6e7 | 1092 | fprintf(stderr, "tar: tape write error\n"); |
415c8aef BJ |
1093 | done(2); |
1094 | } | |
1095 | recno = 0; | |
1096 | } | |
555a248b | 1097 | return (TBLOCK); |
415c8aef BJ |
1098 | } |
1099 | ||
1100 | backtape() | |
1101 | { | |
06eff236 BJ |
1102 | static int mtdev = 1; |
1103 | static struct mtop mtop = {MTBSR, 1}; | |
1104 | struct mtget mtget; | |
1105 | ||
1106 | if (mtdev == 1) | |
1107 | mtdev = ioctl(mt, MTIOCGET, &mtget); | |
1108 | if (mtdev == 0) { | |
1109 | if (ioctl(mt, MTIOCTOP, &mtop) < 0) { | |
095da6e7 | 1110 | fprintf(stderr, "tar: tape backspace error\n"); |
415c8aef BJ |
1111 | done(4); |
1112 | } | |
06eff236 BJ |
1113 | } else |
1114 | lseek(mt, (long) -TBLOCK*nblock, 1); | |
1115 | recno--; | |
415c8aef BJ |
1116 | } |
1117 | ||
1118 | flushtape() | |
1119 | { | |
1120 | write(mt, tbuf, TBLOCK*nblock); | |
1121 | } | |
1122 | ||
8678ae71 KM |
1123 | bread(fd, buf, size) |
1124 | int fd; | |
1125 | char *buf; | |
1126 | int size; | |
1127 | { | |
1128 | int count; | |
1129 | static int lastread = 0; | |
1130 | ||
1131 | if (!Bflag) | |
1132 | return (read(fd, buf, size)); | |
1133 | for (count = 0; count < size; count += lastread) { | |
1134 | if (lastread < 0) { | |
1135 | if (count > 0) | |
1136 | return (count); | |
1137 | return (lastread); | |
1138 | } | |
1139 | lastread = read(fd, buf, size - count); | |
1140 | buf += lastread; | |
1141 | } | |
1142 | return (count); | |
1143 | } | |
5ee3622a SL |
1144 | |
1145 | char * | |
1146 | getcwd(buf) | |
1147 | char *buf; | |
1148 | { | |
1149 | ||
1150 | if (getwd(buf) == NULL) { | |
1151 | fprintf(stderr, "tar: %s\n", buf); | |
1152 | exit(1); | |
1153 | } | |
1154 | return (buf); | |
1155 | } |