Commit | Line | Data |
---|---|---|
8c5eec2f | 1 | /* |
b42768a6 KB |
2 | * Copyright (c) 1983 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
70ab3c27 | 5 | * %sccs.include.redist.c% |
8c5eec2f | 6 | */ |
f78e116c | 7 | |
8c5eec2f | 8 | #ifndef lint |
70ab3c27 | 9 | static char sccsid[] = "@(#)tape.c 5.19 (Berkeley) %G%"; |
b42768a6 | 10 | #endif /* not lint */ |
ebd1f727 | 11 | |
f78e116c | 12 | #include "restore.h" |
d9127117 | 13 | #include <protocols/dumprestore.h> |
f78e116c KM |
14 | #include <sys/ioctl.h> |
15 | #include <sys/mtio.h> | |
2cb5dabb | 16 | #include <sys/file.h> |
f78e116c | 17 | #include <setjmp.h> |
a7b24fe9 | 18 | #include <sys/stat.h> |
7abf8d65 | 19 | #include "pathnames.h" |
2cb5dabb | 20 | |
bdeceadb | 21 | static long fssize = MAXBSIZE; |
2cb5dabb KM |
22 | static int mt = -1; |
23 | static int pipein = 0; | |
7eb08dfe | 24 | static char magtape[BUFSIZ]; |
19230a53 KM |
25 | static int bct; |
26 | static char *tbf; | |
2cb5dabb KM |
27 | static union u_spcl endoftapemark; |
28 | static long blksread; | |
170639fd | 29 | static long tapesread; |
2cb5dabb KM |
30 | static jmp_buf restart; |
31 | static int gettingfile = 0; /* restart has a valid frame */ | |
32 | ||
33 | static int ofile; | |
34 | static char *map; | |
35 | static char lnkbuf[MAXPATHLEN + 1]; | |
36 | static int pathlen; | |
f78e116c | 37 | |
b4c41341 KS |
38 | int Bcvt; /* Swap Bytes (for CCI or sun) */ |
39 | static int Qcvt; /* Swap quads (for sun) */ | |
f78e116c KM |
40 | /* |
41 | * Set up an input source | |
42 | */ | |
43 | setinput(source) | |
44 | char *source; | |
45 | { | |
7abf8d65 | 46 | extern int errno; |
e9e7ecc4 | 47 | #ifdef RRESTORE |
7eb08dfe | 48 | char *host, *tape; |
e9e7ecc4 | 49 | #endif RRESTORE |
7abf8d65 | 50 | char *strerror(); |
f78e116c | 51 | |
19230a53 | 52 | flsht(); |
b97e998a KM |
53 | if (bflag) |
54 | newtapebuf(ntrec); | |
55 | else | |
56 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
9c695c61 | 57 | terminal = stdin; |
e9e7ecc4 | 58 | #ifdef RRESTORE |
f78e116c | 59 | host = source; |
7eb08dfe KM |
60 | tape = index(host, ':'); |
61 | if (tape == 0) { | |
f78e116c | 62 | nohost: |
5c5f44c7 | 63 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
64 | done(1); |
65 | } | |
7eb08dfe KM |
66 | *tape++ = '\0'; |
67 | (void) strcpy(magtape, tape); | |
f78e116c KM |
68 | if (rmthost(host) == 0) |
69 | done(1); | |
70 | setuid(getuid()); /* no longer need or want root privileges */ | |
71 | #else | |
9c695c61 | 72 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
73 | /* |
74 | * Since input is coming from a pipe we must establish | |
75 | * our own connection to the terminal. | |
76 | */ | |
7abf8d65 | 77 | terminal = fopen(_PATH_TTY, "r"); |
b677c5d7 | 78 | if (terminal == NULL) { |
7abf8d65 KB |
79 | (void)fprintf(stderr, "Cannot open %s: %s\n", |
80 | _PATH_TTY, strerror(errno)); | |
81 | terminal = fopen(_PATH_DEVNULL, "r"); | |
b8eb5f1f | 82 | if (terminal == NULL) { |
7abf8d65 KB |
83 | (void)fprintf(stderr, "Cannot open %s: %s\n", |
84 | _PATH_DEVNULL, strerror(errno)); | |
b8eb5f1f KM |
85 | done(1); |
86 | } | |
b677c5d7 | 87 | } |
2cb5dabb | 88 | pipein++; |
2cb5dabb | 89 | } |
7eb08dfe | 90 | (void) strcpy(magtape, source); |
e9e7ecc4 | 91 | #endif RRESTORE |
f78e116c KM |
92 | } |
93 | ||
b97e998a KM |
94 | newtapebuf(size) |
95 | long size; | |
96 | { | |
97 | static tbfsize = -1; | |
98 | ||
99 | ntrec = size; | |
100 | if (size <= tbfsize) | |
101 | return; | |
102 | if (tbf != NULL) | |
103 | free(tbf); | |
104 | tbf = (char *)malloc(size * TP_BSIZE); | |
105 | if (tbf == NULL) { | |
106 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
107 | done(1); | |
108 | } | |
109 | tbfsize = size; | |
110 | } | |
111 | ||
f78e116c KM |
112 | /* |
113 | * Verify that the tape drive can be accessed and | |
114 | * that it actually is a dump tape. | |
115 | */ | |
116 | setup() | |
117 | { | |
2cb5dabb | 118 | int i, j, *ip; |
f78e116c | 119 | struct stat stbuf; |
f78e116c KM |
120 | extern int xtrmap(), xtrmapskip(); |
121 | ||
122 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 123 | #ifdef RRESTORE |
f78e116c KM |
124 | if ((mt = rmtopen(magtape, 0)) < 0) |
125 | #else | |
2cb5dabb KM |
126 | if (pipein) |
127 | mt = 0; | |
128 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
129 | #endif |
130 | { | |
e9e7ecc4 | 131 | perror(magtape); |
f78e116c KM |
132 | done(1); |
133 | } | |
768eb687 KM |
134 | volno = 1; |
135 | setdumpnum(); | |
f78e116c | 136 | flsht(); |
b97e998a KM |
137 | if (!pipein && !bflag) |
138 | findtapeblksize(); | |
5c5f44c7 | 139 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
140 | bct--; /* push back this block */ |
141 | cvtflag++; | |
5c5f44c7 | 142 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
143 | fprintf(stderr, "Tape is not a dump tape\n"); |
144 | done(1); | |
145 | } | |
146 | fprintf(stderr, "Converting to new file system format.\n"); | |
147 | } | |
2cb5dabb KM |
148 | if (pipein) { |
149 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
150 | endoftapemark.s_spcl.c_type = TS_END; | |
151 | ip = (int *)&endoftapemark; | |
152 | j = sizeof(union u_spcl) / sizeof(int); | |
153 | i = 0; | |
154 | do | |
155 | i += *ip++; | |
156 | while (--j); | |
157 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
158 | } | |
b32320ae KM |
159 | if (vflag || command == 't') |
160 | printdumpinfo(); | |
f78e116c | 161 | dumptime = spcl.c_ddate; |
2cb5dabb | 162 | dumpdate = spcl.c_date; |
f78e116c | 163 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 164 | perror("cannot stat ."); |
f78e116c KM |
165 | done(1); |
166 | } | |
bdeceadb KM |
167 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
168 | fssize = stbuf.st_blksize; | |
169 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
170 | fprintf(stderr, "bad block size %d\n", fssize); |
171 | done(1); | |
172 | } | |
2cb5dabb | 173 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
174 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
175 | done(1); | |
176 | } | |
2cb5dabb KM |
177 | if (readhdr(&spcl) == FAIL) |
178 | panic("no header after volume mark!\n"); | |
b32320ae | 179 | findinode(&spcl); |
2cb5dabb | 180 | if (checktype(&spcl, TS_CLRI) == FAIL) { |
f78e116c KM |
181 | fprintf(stderr, "Cannot find file removal list\n"); |
182 | done(1); | |
183 | } | |
2cb5dabb | 184 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 185 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 186 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
187 | if (map == (char *)NIL) |
188 | panic("no memory for file removal list\n"); | |
cf6db0ab | 189 | clrimap = map; |
f78e116c KM |
190 | curfile.action = USING; |
191 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 192 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
193 | fprintf(stderr, "Cannot find file dump list\n"); |
194 | done(1); | |
195 | } | |
7851e15d | 196 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
197 | if (map == (char *)NULL) |
198 | panic("no memory for file dump list\n"); | |
cf6db0ab | 199 | dumpmap = map; |
f78e116c KM |
200 | curfile.action = USING; |
201 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
202 | } |
203 | ||
170639fd KM |
204 | /* |
205 | * Prompt user to load a new dump volume. | |
206 | * "Nextvol" is the next suggested volume to use. | |
207 | * This suggested volume is enforced when doing full | |
208 | * or incremental restores, but can be overrridden by | |
209 | * the user when only extracting a subset of the files. | |
210 | */ | |
f78e116c KM |
211 | getvol(nextvol) |
212 | long nextvol; | |
213 | { | |
214 | long newvol; | |
170639fd | 215 | long savecnt, i; |
f78e116c KM |
216 | union u_spcl tmpspcl; |
217 | # define tmpbuf tmpspcl.s_spcl | |
b32320ae | 218 | char buf[TP_BSIZE]; |
cb2a63da | 219 | extern char *ctime(); |
f78e116c | 220 | |
a162cc0b | 221 | if (nextvol == 1) { |
170639fd | 222 | tapesread = 0; |
a162cc0b KM |
223 | gettingfile = 0; |
224 | } | |
2cb5dabb | 225 | if (pipein) { |
e108d3a2 | 226 | if (nextvol != 1) |
2cb5dabb | 227 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
228 | if (volno == 1) |
229 | return; | |
230 | goto gethdr; | |
2cb5dabb KM |
231 | } |
232 | savecnt = blksread; | |
f78e116c | 233 | again: |
e108d3a2 KM |
234 | if (pipein) |
235 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
236 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
237 | newvol = nextvol; | |
238 | else | |
239 | newvol = 0; | |
240 | while (newvol <= 0) { | |
170639fd KM |
241 | if (tapesread == 0) { |
242 | fprintf(stderr, "%s%s%s%s%s", | |
243 | "You have not read any tapes yet.\n", | |
244 | "Unless you know which volume your", | |
245 | " file(s) are on you should start\n", | |
246 | "with the last volume and work", | |
b4c41341 | 247 | " towards towards the first.\n"); |
170639fd KM |
248 | } else { |
249 | fprintf(stderr, "You have read volumes"); | |
250 | strcpy(tbf, ": "); | |
251 | for (i = 1; i < 32; i++) | |
252 | if (tapesread & (1 << i)) { | |
253 | fprintf(stderr, "%s%d", tbf, i); | |
254 | strcpy(tbf, ", "); | |
255 | } | |
256 | fprintf(stderr, "\n"); | |
257 | } | |
538cb7bb | 258 | do { |
b677c5d7 KM |
259 | fprintf(stderr, "Specify next volume #: "); |
260 | (void) fflush(stderr); | |
261 | (void) fgets(tbf, BUFSIZ, terminal); | |
262 | } while (!feof(terminal) && tbf[0] == '\n'); | |
263 | if (feof(terminal)) | |
538cb7bb | 264 | done(1); |
f78e116c KM |
265 | newvol = atoi(tbf); |
266 | if (newvol <= 0) { | |
267 | fprintf(stderr, | |
268 | "Volume numbers are positive numerics\n"); | |
269 | } | |
270 | } | |
170639fd KM |
271 | if (newvol == volno) { |
272 | tapesread |= 1 << volno; | |
f78e116c | 273 | return; |
170639fd | 274 | } |
f78e116c | 275 | closemt(); |
7eb08dfe | 276 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
eb317d51 KM |
277 | fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); |
278 | fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); | |
b677c5d7 | 279 | (void) fflush(stderr); |
7eb08dfe KM |
280 | (void) fgets(tbf, BUFSIZ, terminal); |
281 | if (feof(terminal)) | |
282 | done(1); | |
eb317d51 KM |
283 | if (!strcmp(tbf, "none\n")) { |
284 | curfile.name = "<name unknown>"; | |
285 | curfile.action = UNKNOWN; | |
286 | curfile.dip = (struct dinode *)NIL; | |
287 | curfile.ino = maxino; | |
288 | if (gettingfile) { | |
289 | gettingfile = 0; | |
290 | longjmp(restart, 1); | |
291 | } | |
292 | } | |
7eb08dfe KM |
293 | if (tbf[0] != '\n') { |
294 | (void) strcpy(magtape, tbf); | |
295 | magtape[strlen(magtape) - 1] = '\0'; | |
296 | } | |
e9e7ecc4 | 297 | #ifdef RRESTORE |
f78e116c KM |
298 | if ((mt = rmtopen(magtape, 0)) == -1) |
299 | #else | |
300 | if ((mt = open(magtape, 0)) == -1) | |
301 | #endif | |
302 | { | |
7eb08dfe KM |
303 | fprintf(stderr, "Cannot open %s\n", magtape); |
304 | volno = -1; | |
f78e116c KM |
305 | goto again; |
306 | } | |
e108d3a2 | 307 | gethdr: |
f78e116c | 308 | volno = newvol; |
768eb687 | 309 | setdumpnum(); |
f78e116c | 310 | flsht(); |
2cb5dabb | 311 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
312 | fprintf(stderr, "tape is not dump tape\n"); |
313 | volno = 0; | |
314 | goto again; | |
315 | } | |
2cb5dabb | 316 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
317 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
318 | volno = 0; | |
319 | goto again; | |
320 | } | |
2cb5dabb | 321 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
322 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
323 | ctime(&tmpbuf.c_date)); | |
324 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
325 | volno = 0; |
326 | goto again; | |
327 | } | |
170639fd | 328 | tapesread |= 1 << volno; |
5c5f44c7 | 329 | blksread = savecnt; |
f78e116c KM |
330 | if (curfile.action == USING) { |
331 | if (volno == 1) | |
332 | panic("active file into volume 1\n"); | |
333 | return; | |
334 | } | |
b32320ae KM |
335 | /* |
336 | * Skip up to the beginning of the next record | |
337 | */ | |
8d412b7c | 338 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) |
b32320ae KM |
339 | for (i = tmpbuf.c_count; i > 0; i--) |
340 | readtape(buf); | |
5c5f44c7 | 341 | (void) gethead(&spcl); |
b32320ae | 342 | findinode(&spcl); |
f78e116c KM |
343 | if (gettingfile) { |
344 | gettingfile = 0; | |
345 | longjmp(restart, 1); | |
346 | } | |
347 | } | |
348 | ||
768eb687 KM |
349 | /* |
350 | * handle multiple dumps per tape by skipping forward to the | |
351 | * appropriate one. | |
352 | */ | |
353 | setdumpnum() | |
354 | { | |
355 | struct mtop tcom; | |
356 | ||
357 | if (dumpnum == 1 || volno != 1) | |
358 | return; | |
359 | if (pipein) { | |
360 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
361 | done(1); | |
362 | } | |
363 | tcom.mt_op = MTFSF; | |
364 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 365 | #ifdef RRESTORE |
768eb687 KM |
366 | rmtioctl(MTFSF, dumpnum - 1); |
367 | #else | |
538cb7bb | 368 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
369 | perror("ioctl MTFSF"); |
370 | #endif | |
371 | } | |
372 | ||
b32320ae KM |
373 | printdumpinfo() |
374 | { | |
cb2a63da | 375 | extern char *ctime(); |
b32320ae KM |
376 | |
377 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
f441de4a KM |
378 | fprintf(stdout, "Dumped from: %s", |
379 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
b32320ae KM |
380 | if (spcl.c_host[0] == '\0') |
381 | return; | |
382 | fprintf(stderr, "Level %d dump of %s on %s:%s\n", | |
383 | spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); | |
384 | fprintf(stderr, "Label: %s\n", spcl.c_label); | |
385 | } | |
386 | ||
f78e116c KM |
387 | extractfile(name) |
388 | char *name; | |
389 | { | |
390 | int mode; | |
165b1daf | 391 | struct timeval timep[2]; |
f78e116c KM |
392 | struct entry *ep; |
393 | extern int xtrlnkfile(), xtrlnkskip(); | |
394 | extern int xtrfile(), xtrskip(); | |
395 | ||
396 | curfile.name = name; | |
397 | curfile.action = USING; | |
165b1daf KM |
398 | timep[0].tv_sec = curfile.dip->di_atime; |
399 | timep[0].tv_usec = 0; | |
400 | timep[1].tv_sec = curfile.dip->di_mtime; | |
401 | timep[1].tv_usec = 0; | |
f78e116c KM |
402 | mode = curfile.dip->di_mode; |
403 | switch (mode & IFMT) { | |
404 | ||
405 | default: | |
406 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
407 | skipfile(); | |
408 | return (FAIL); | |
409 | ||
74e940f5 KM |
410 | case IFSOCK: |
411 | vprintf(stdout, "skipped socket %s\n", name); | |
412 | skipfile(); | |
413 | return (GOOD); | |
414 | ||
f78e116c KM |
415 | case IFDIR: |
416 | if (mflag) { | |
417 | ep = lookupname(name); | |
418 | if (ep == NIL || ep->e_flags & EXTRACT) | |
419 | panic("unextracted directory %s\n", name); | |
420 | skipfile(); | |
421 | return (GOOD); | |
422 | } | |
423 | vprintf(stdout, "extract file %s\n", name); | |
424 | return (genliteraldir(name, curfile.ino)); | |
425 | ||
426 | case IFLNK: | |
427 | lnkbuf[0] = '\0'; | |
428 | pathlen = 0; | |
429 | getfile(xtrlnkfile, xtrlnkskip); | |
430 | if (pathlen == 0) { | |
431 | vprintf(stdout, | |
432 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
433 | return (GOOD); |
434 | } | |
435 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
436 | |
437 | case IFCHR: | |
438 | case IFBLK: | |
439 | vprintf(stdout, "extract special file %s\n", name); | |
414c4f09 KM |
440 | if (Nflag) { |
441 | skipfile(); | |
442 | return (GOOD); | |
443 | } | |
f78e116c | 444 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { |
e9e7ecc4 KM |
445 | fprintf(stderr, "%s: ", name); |
446 | (void) fflush(stderr); | |
447 | perror("cannot create special file"); | |
f78e116c KM |
448 | skipfile(); |
449 | return (FAIL); | |
450 | } | |
768eb687 KM |
451 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
452 | (void) chmod(name, mode); | |
f78e116c | 453 | skipfile(); |
165b1daf | 454 | utimes(name, timep); |
f78e116c KM |
455 | return (GOOD); |
456 | ||
457 | case IFREG: | |
458 | vprintf(stdout, "extract file %s\n", name); | |
414c4f09 KM |
459 | if (Nflag) { |
460 | skipfile(); | |
461 | return (GOOD); | |
462 | } | |
15aeb519 | 463 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
464 | fprintf(stderr, "%s: ", name); |
465 | (void) fflush(stderr); | |
466 | perror("cannot create file"); | |
f78e116c KM |
467 | skipfile(); |
468 | return (FAIL); | |
469 | } | |
768eb687 KM |
470 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
471 | (void) fchmod(ofile, mode); | |
f78e116c | 472 | getfile(xtrfile, xtrskip); |
768eb687 | 473 | (void) close(ofile); |
165b1daf | 474 | utimes(name, timep); |
f78e116c KM |
475 | return (GOOD); |
476 | } | |
477 | /* NOTREACHED */ | |
478 | } | |
479 | ||
e108d3a2 KM |
480 | /* |
481 | * skip over bit maps on the tape | |
482 | */ | |
483 | skipmaps() | |
484 | { | |
485 | ||
486 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
487 | checktype(&spcl, TS_BITS) == GOOD) | |
488 | skipfile(); | |
489 | } | |
490 | ||
491 | /* | |
492 | * skip over a file on the tape | |
493 | */ | |
f78e116c KM |
494 | skipfile() |
495 | { | |
496 | extern int null(); | |
497 | ||
498 | curfile.action = SKIP; | |
499 | getfile(null, null); | |
500 | } | |
501 | ||
502 | /* | |
503 | * Do the file extraction, calling the supplied functions | |
504 | * with the blocks | |
505 | */ | |
506 | getfile(f1, f2) | |
507 | int (*f2)(), (*f1)(); | |
508 | { | |
509 | register int i; | |
510 | int curblk = 0; | |
511 | off_t size = spcl.c_dinode.di_size; | |
512 | static char clearedbuf[MAXBSIZE]; | |
513 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
4f8ea093 | 514 | char junk[TP_BSIZE]; |
f78e116c | 515 | |
2cb5dabb | 516 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 517 | panic("ran off end of tape\n"); |
e108d3a2 | 518 | if (ishead(&spcl) == FAIL) |
f78e116c | 519 | panic("not at beginning of a file\n"); |
e108d3a2 | 520 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
521 | return; |
522 | gettingfile++; | |
523 | loop: | |
524 | for (i = 0; i < spcl.c_count; i++) { | |
525 | if (spcl.c_addr[i]) { | |
526 | readtape(&buf[curblk++][0]); | |
527 | if (curblk == fssize / TP_BSIZE) { | |
528 | (*f1)(buf, size > TP_BSIZE ? | |
529 | (long) (fssize) : | |
530 | (curblk - 1) * TP_BSIZE + size); | |
531 | curblk = 0; | |
532 | } | |
533 | } else { | |
534 | if (curblk > 0) { | |
535 | (*f1)(buf, size > TP_BSIZE ? | |
536 | (long) (curblk * TP_BSIZE) : | |
537 | (curblk - 1) * TP_BSIZE + size); | |
538 | curblk = 0; | |
539 | } | |
540 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
541 | (long) TP_BSIZE : size); | |
542 | } | |
4f8ea093 KM |
543 | if ((size -= TP_BSIZE) <= 0) { |
544 | for (i++; i < spcl.c_count; i++) | |
545 | if (spcl.c_addr[i]) | |
546 | readtape(junk); | |
9f13f26d | 547 | break; |
4f8ea093 | 548 | } |
f78e116c | 549 | } |
5c5f44c7 | 550 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
551 | if (checktype(&spcl, TS_ADDR) == GOOD) |
552 | goto loop; | |
768eb687 | 553 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 554 | curfile.name); |
f78e116c | 555 | } |
9f13f26d | 556 | if (curblk > 0) |
f78e116c | 557 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
b32320ae | 558 | findinode(&spcl); |
f78e116c KM |
559 | gettingfile = 0; |
560 | } | |
561 | ||
562 | /* | |
563 | * The next routines are called during file extraction to | |
564 | * put the data into the right form and place. | |
565 | */ | |
566 | xtrfile(buf, size) | |
567 | char *buf; | |
568 | long size; | |
569 | { | |
570 | ||
414c4f09 KM |
571 | if (Nflag) |
572 | return; | |
f78e116c KM |
573 | if (write(ofile, buf, (int) size) == -1) { |
574 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
575 | curfile.ino, curfile.name); | |
576 | perror("write"); | |
577 | done(1); | |
578 | } | |
579 | } | |
580 | ||
581 | xtrskip(buf, size) | |
582 | char *buf; | |
583 | long size; | |
584 | { | |
585 | ||
586 | #ifdef lint | |
587 | buf = buf; | |
588 | #endif | |
589 | if (lseek(ofile, size, 1) == (long)-1) { | |
590 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
591 | curfile.ino, curfile.name); | |
592 | perror("lseek"); | |
593 | done(1); | |
594 | } | |
595 | } | |
596 | ||
597 | xtrlnkfile(buf, size) | |
598 | char *buf; | |
599 | long size; | |
600 | { | |
601 | ||
602 | pathlen += size; | |
603 | if (pathlen > MAXPATHLEN) { | |
604 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
605 | curfile.name, lnkbuf, buf, pathlen); | |
606 | done(1); | |
607 | } | |
538cb7bb | 608 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
609 | } |
610 | ||
611 | xtrlnkskip(buf, size) | |
612 | char *buf; | |
613 | long size; | |
614 | { | |
615 | ||
616 | #ifdef lint | |
617 | buf = buf, size = size; | |
618 | #endif | |
619 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
620 | curfile.name); | |
621 | done(1); | |
622 | } | |
623 | ||
624 | xtrmap(buf, size) | |
625 | char *buf; | |
626 | long size; | |
627 | { | |
628 | ||
629 | bcopy(buf, map, size); | |
cf6db0ab | 630 | map += size; |
f78e116c KM |
631 | } |
632 | ||
633 | xtrmapskip(buf, size) | |
634 | char *buf; | |
635 | long size; | |
636 | { | |
637 | ||
638 | #ifdef lint | |
639 | buf = buf; | |
f78e116c KM |
640 | #endif |
641 | panic("hole in map\n"); | |
cf6db0ab | 642 | map += size; |
f78e116c KM |
643 | } |
644 | ||
645 | null() {;} | |
646 | ||
647 | /* | |
648 | * Do the tape i/o, dealing with volume changes | |
649 | * etc.. | |
650 | */ | |
651 | readtape(b) | |
652 | char *b; | |
653 | { | |
654 | register long i; | |
7851e15d KM |
655 | long rd, newvol; |
656 | int cnt; | |
f78e116c | 657 | |
b97e998a KM |
658 | if (bct < ntrec) { |
659 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
660 | blksread++; | |
661 | return; | |
662 | } | |
663 | for (i = 0; i < ntrec; i++) | |
664 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
665 | bct = 0; | |
666 | cnt = ntrec*TP_BSIZE; | |
667 | rd = 0; | |
668 | getmore: | |
e9e7ecc4 | 669 | #ifdef RRESTORE |
b97e998a | 670 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 671 | #else |
b97e998a | 672 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 673 | #endif |
b97e998a KM |
674 | if (i > 0 && i != ntrec*TP_BSIZE) { |
675 | if (pipein) { | |
74025ab9 KM |
676 | rd += i; |
677 | cnt -= i; | |
678 | if (cnt > 0) | |
679 | goto getmore; | |
680 | i = rd; | |
b97e998a KM |
681 | } else { |
682 | if (i % TP_BSIZE != 0) | |
683 | panic("partial block read: %d should be %d\n", | |
684 | i, ntrec * TP_BSIZE); | |
685 | bcopy((char *)&endoftapemark, &tbf[i], | |
686 | (long)TP_BSIZE); | |
74025ab9 | 687 | } |
b97e998a KM |
688 | } |
689 | if (i < 0) { | |
690 | fprintf(stderr, "Tape read error while "); | |
691 | switch (curfile.action) { | |
692 | default: | |
693 | fprintf(stderr, "trying to set up tape\n"); | |
694 | break; | |
695 | case UNKNOWN: | |
bf7abb47 | 696 | fprintf(stderr, "trying to resynchronize\n"); |
b97e998a KM |
697 | break; |
698 | case USING: | |
699 | fprintf(stderr, "restoring %s\n", curfile.name); | |
700 | break; | |
701 | case SKIP: | |
702 | fprintf(stderr, "skipping over inode %d\n", | |
703 | curfile.ino); | |
704 | break; | |
705 | } | |
706 | if (!yflag && !reply("continue")) | |
707 | done(1); | |
708 | i = ntrec*TP_BSIZE; | |
709 | bzero(tbf, i); | |
e9e7ecc4 | 710 | #ifdef RRESTORE |
b97e998a | 711 | if (rmtseek(i, 1) < 0) |
f78e116c | 712 | #else |
b97e998a | 713 | if (lseek(mt, i, 1) == (long)-1) |
f78e116c | 714 | #endif |
b97e998a KM |
715 | { |
716 | perror("continuation failed"); | |
717 | done(1); | |
f78e116c | 718 | } |
b97e998a KM |
719 | } |
720 | if (i == 0) { | |
ad073f89 KM |
721 | if (!pipein) { |
722 | newvol = volno + 1; | |
723 | volno = 0; | |
724 | getvol(newvol); | |
725 | readtape(b); | |
f78e116c KM |
726 | return; |
727 | } | |
ad073f89 KM |
728 | if (rd % TP_BSIZE != 0) |
729 | panic("partial block read: %d should be %d\n", | |
730 | rd, ntrec * TP_BSIZE); | |
731 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c KM |
732 | } |
733 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 734 | blksread++; |
f78e116c KM |
735 | } |
736 | ||
b97e998a KM |
737 | findtapeblksize() |
738 | { | |
739 | register long i; | |
740 | ||
741 | for (i = 0; i < ntrec; i++) | |
742 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
743 | bct = 0; | |
744 | #ifdef RRESTORE | |
745 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
746 | #else | |
747 | i = read(mt, tbf, ntrec * TP_BSIZE); | |
748 | #endif | |
749 | if (i <= 0) { | |
750 | perror("Tape read error"); | |
751 | done(1); | |
752 | } | |
753 | if (i % TP_BSIZE != 0) { | |
754 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
755 | i, "is not a multiple of dump block size", TP_BSIZE); | |
756 | done(1); | |
757 | } | |
758 | ntrec = i / TP_BSIZE; | |
759 | vprintf(stdout, "Tape block size is %d\n", ntrec); | |
760 | } | |
761 | ||
f78e116c KM |
762 | flsht() |
763 | { | |
764 | ||
19230a53 | 765 | bct = ntrec+1; |
f78e116c KM |
766 | } |
767 | ||
f78e116c KM |
768 | closemt() |
769 | { | |
770 | if (mt < 0) | |
771 | return; | |
e9e7ecc4 | 772 | #ifdef RRESTORE |
f78e116c KM |
773 | rmtclose(); |
774 | #else | |
768eb687 | 775 | (void) close(mt); |
f78e116c KM |
776 | #endif |
777 | } | |
778 | ||
779 | checkvol(b, t) | |
780 | struct s_spcl *b; | |
781 | long t; | |
782 | { | |
783 | ||
2cb5dabb KM |
784 | if (b->c_volume != t) |
785 | return(FAIL); | |
786 | return(GOOD); | |
f78e116c KM |
787 | } |
788 | ||
789 | readhdr(b) | |
790 | struct s_spcl *b; | |
791 | { | |
792 | ||
5c5f44c7 | 793 | if (gethead(b) == FAIL) { |
768eb687 | 794 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 795 | return(FAIL); |
5c5f44c7 | 796 | } |
2cb5dabb | 797 | return(GOOD); |
f78e116c KM |
798 | } |
799 | ||
800 | /* | |
801 | * read the tape into buf, then return whether or | |
802 | * or not it is a header block. | |
803 | */ | |
804 | gethead(buf) | |
805 | struct s_spcl *buf; | |
806 | { | |
eb317d51 KM |
807 | long i; |
808 | u_long *j; | |
f78e116c KM |
809 | union u_ospcl { |
810 | char dummy[TP_BSIZE]; | |
811 | struct s_ospcl { | |
2cb5dabb KM |
812 | long c_type; |
813 | long c_date; | |
814 | long c_ddate; | |
815 | long c_volume; | |
816 | long c_tapea; | |
cf6db0ab | 817 | u_short c_inumber; |
2cb5dabb KM |
818 | long c_magic; |
819 | long c_checksum; | |
f78e116c KM |
820 | struct odinode { |
821 | unsigned short odi_mode; | |
cf6db0ab KM |
822 | u_short odi_nlink; |
823 | u_short odi_uid; | |
824 | u_short odi_gid; | |
2cb5dabb KM |
825 | long odi_size; |
826 | long odi_rdev; | |
f78e116c | 827 | char odi_addr[36]; |
2cb5dabb KM |
828 | long odi_atime; |
829 | long odi_mtime; | |
830 | long odi_ctime; | |
f78e116c | 831 | } c_dinode; |
2cb5dabb KM |
832 | long c_count; |
833 | char c_addr[256]; | |
f78e116c KM |
834 | } s_ospcl; |
835 | } u_ospcl; | |
836 | ||
837 | if (!cvtflag) { | |
838 | readtape((char *)buf); | |
b4c41341 KS |
839 | if (buf->c_magic != NFS_MAGIC) { |
840 | if (swabl(buf->c_magic) != NFS_MAGIC) | |
841 | return (FAIL); | |
842 | if (!Bcvt) { | |
843 | vprintf(stdout, "Note: Doing Byte swapping\n"); | |
844 | Bcvt = 1; | |
845 | } | |
846 | } | |
847 | if (checksum((int *)buf) == FAIL) | |
848 | return (FAIL); | |
849 | if (Bcvt) | |
850 | swabst("8l4s31l", (char *)buf); | |
5c5f44c7 | 851 | goto good; |
f78e116c KM |
852 | } |
853 | readtape((char *)(&u_ospcl.s_ospcl)); | |
854 | bzero((char *)buf, (long)TP_BSIZE); | |
855 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
856 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
857 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
858 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
859 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
860 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
861 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
862 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
863 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
864 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
865 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
866 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
867 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
868 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
869 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
870 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
871 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
872 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 873 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 874 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 875 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 876 | return(FAIL); |
f78e116c | 877 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
878 | |
879 | good: | |
165b1daf | 880 | j = buf->c_dinode.di_qsize.val; |
b4c41341 KS |
881 | i = j[1]; |
882 | if (buf->c_dinode.di_size == 0 && | |
883 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt==0) { | |
884 | if (*j || i) { | |
885 | printf("Note: Doing Quad swapping\n"); | |
886 | Qcvt = 1; | |
887 | } | |
888 | } | |
889 | if (Qcvt) { | |
890 | j[1] = *j; *j = i; | |
891 | } | |
5c5f44c7 KM |
892 | switch (buf->c_type) { |
893 | ||
894 | case TS_CLRI: | |
895 | case TS_BITS: | |
896 | /* | |
897 | * Have to patch up missing information in bit map headers | |
898 | */ | |
899 | buf->c_inumber = 0; | |
900 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
901 | for (i = 0; i < buf->c_count; i++) | |
902 | buf->c_addr[i]++; | |
903 | break; | |
904 | ||
905 | case TS_TAPE: | |
906 | case TS_END: | |
907 | buf->c_inumber = 0; | |
908 | break; | |
909 | ||
910 | case TS_INODE: | |
911 | case TS_ADDR: | |
912 | break; | |
913 | ||
914 | default: | |
915 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
916 | break; | |
917 | } | |
2cb5dabb KM |
918 | if (dflag) |
919 | accthdr(buf); | |
920 | return(GOOD); | |
921 | } | |
922 | ||
923 | /* | |
924 | * Check that a header is where it belongs and predict the next header | |
925 | */ | |
926 | accthdr(header) | |
927 | struct s_spcl *header; | |
928 | { | |
7851e15d | 929 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
930 | static int prevtype; |
931 | static long predict; | |
932 | long blks, i; | |
933 | ||
8d412b7c | 934 | if (header->c_type == TS_TAPE) { |
5c5f44c7 | 935 | fprintf(stderr, "Volume header\n"); |
b8f4e820 | 936 | previno = 0x7fffffff; |
5c5f44c7 KM |
937 | return; |
938 | } | |
7851e15d | 939 | if (previno == 0x7fffffff) |
2cb5dabb KM |
940 | goto newcalc; |
941 | switch (prevtype) { | |
2cb5dabb | 942 | case TS_BITS: |
5c5f44c7 | 943 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
944 | break; |
945 | case TS_CLRI: | |
5c5f44c7 | 946 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
947 | break; |
948 | case TS_INODE: | |
5c5f44c7 | 949 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
950 | break; |
951 | case TS_ADDR: | |
5c5f44c7 | 952 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
953 | break; |
954 | case TS_END: | |
5c5f44c7 | 955 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
956 | break; |
957 | } | |
2cb5dabb KM |
958 | if (predict != blksread - 1) |
959 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
960 | predict, blksread - 1); | |
961 | fprintf(stderr, "\n"); | |
962 | newcalc: | |
963 | blks = 0; | |
5c5f44c7 | 964 | if (header->c_type != TS_END) |
2cb5dabb KM |
965 | for (i = 0; i < header->c_count; i++) |
966 | if (header->c_addr[i] != 0) | |
967 | blks++; | |
968 | predict = blks; | |
969 | blksread = 0; | |
970 | prevtype = header->c_type; | |
971 | previno = header->c_inumber; | |
f78e116c KM |
972 | } |
973 | ||
974 | /* | |
975 | * Find an inode header. | |
976 | * Complain if had to skip, and complain is set. | |
977 | */ | |
b32320ae | 978 | findinode(header) |
f78e116c | 979 | struct s_spcl *header; |
f78e116c | 980 | { |
2cb5dabb | 981 | static long skipcnt = 0; |
b8f4e820 KM |
982 | long i; |
983 | char buf[TP_BSIZE]; | |
f78e116c KM |
984 | |
985 | curfile.name = "<name unknown>"; | |
986 | curfile.action = UNKNOWN; | |
987 | curfile.dip = (struct dinode *)NIL; | |
988 | curfile.ino = 0; | |
2cb5dabb KM |
989 | if (ishead(header) == FAIL) { |
990 | skipcnt++; | |
7702e9a8 | 991 | while (gethead(header) == FAIL || header->c_date != dumpdate) |
f78e116c | 992 | skipcnt++; |
2cb5dabb | 993 | } |
f78e116c | 994 | for (;;) { |
b8f4e820 KM |
995 | if (checktype(header, TS_ADDR) == GOOD) { |
996 | /* | |
997 | * Skip up to the beginning of the next record | |
998 | */ | |
999 | for (i = 0; i < header->c_count; i++) | |
1000 | if (header->c_addr[i]) | |
1001 | readtape(buf); | |
1002 | (void) gethead(header); | |
1003 | continue; | |
1004 | } | |
2cb5dabb | 1005 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
1006 | curfile.dip = &header->c_dinode; |
1007 | curfile.ino = header->c_inumber; | |
1008 | break; | |
1009 | } | |
2cb5dabb | 1010 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
1011 | curfile.ino = maxino; |
1012 | break; | |
1013 | } | |
2cb5dabb | 1014 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 1015 | curfile.name = "<file removal list>"; |
e108d3a2 | 1016 | break; |
f78e116c | 1017 | } |
2cb5dabb | 1018 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 1019 | curfile.name = "<file dump list>"; |
e108d3a2 | 1020 | break; |
f78e116c | 1021 | } |
2cb5dabb | 1022 | while (gethead(header) == FAIL) |
f78e116c KM |
1023 | skipcnt++; |
1024 | } | |
b32320ae | 1025 | if (skipcnt > 0) |
dd1900f1 | 1026 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
1027 | skipcnt = 0; |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * return whether or not the buffer contains a header block | |
1032 | */ | |
1033 | ishead(buf) | |
1034 | struct s_spcl *buf; | |
1035 | { | |
1036 | ||
1037 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
1038 | return(FAIL); |
1039 | return(GOOD); | |
f78e116c KM |
1040 | } |
1041 | ||
1042 | checktype(b, t) | |
1043 | struct s_spcl *b; | |
1044 | int t; | |
1045 | { | |
1046 | ||
2cb5dabb KM |
1047 | if (b->c_type != t) |
1048 | return(FAIL); | |
1049 | return(GOOD); | |
f78e116c KM |
1050 | } |
1051 | ||
1052 | checksum(b) | |
1053 | register int *b; | |
1054 | { | |
1055 | register int i, j; | |
1056 | ||
1057 | j = sizeof(union u_spcl) / sizeof(int); | |
1058 | i = 0; | |
b4c41341 KS |
1059 | if(!Bcvt) { |
1060 | do | |
1061 | i += *b++; | |
1062 | while (--j); | |
1063 | } else { | |
1064 | /* What happens if we want to read restore tapes | |
1065 | for a 16bit int machine??? */ | |
1066 | do | |
1067 | i += swabl(*b++); | |
1068 | while (--j); | |
1069 | } | |
1070 | ||
f78e116c KM |
1071 | if (i != CHECKSUM) { |
1072 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
1073 | curfile.ino, curfile.name); | |
2cb5dabb | 1074 | return(FAIL); |
f78e116c | 1075 | } |
2cb5dabb | 1076 | return(GOOD); |
f78e116c KM |
1077 | } |
1078 | ||
e9e7ecc4 | 1079 | #ifdef RRESTORE |
74025ab9 | 1080 | /* VARARGS1 */ |
f78e116c KM |
1081 | msg(cp, a1, a2, a3) |
1082 | char *cp; | |
1083 | { | |
1084 | ||
1085 | fprintf(stderr, cp, a1, a2, a3); | |
1086 | } | |
e9e7ecc4 | 1087 | #endif RRESTORE |
b4c41341 KS |
1088 | |
1089 | swabst(cp, sp) | |
1090 | register char *cp, *sp; | |
1091 | { | |
1092 | int n = 0; | |
1093 | char c; | |
1094 | while(*cp) { | |
1095 | switch (*cp) { | |
1096 | case '0': case '1': case '2': case '3': case '4': | |
1097 | case '5': case '6': case '7': case '8': case '9': | |
1098 | n = (n * 10) + (*cp++ - '0'); | |
1099 | continue; | |
1100 | ||
1101 | case 's': case 'w': case 'h': | |
1102 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1103 | sp++; | |
1104 | break; | |
1105 | ||
1106 | case 'l': | |
1107 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
1108 | c = sp[2]; sp[2] = sp[1]; sp[1] = c; | |
1109 | sp += 3; | |
1110 | } | |
1111 | sp++; /* Any other character, like 'b' counts as byte. */ | |
1112 | if (n <= 1) { | |
1113 | n = 0; cp++; | |
1114 | } else | |
1115 | n--; | |
1116 | } | |
1117 | } | |
1118 | swabl(x) { unsigned long l = x; swabst("l", (char *)&l); return l; } |