Commit | Line | Data |
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8c5eec2f | 1 | /* |
b42768a6 KB |
2 | * Copyright (c) 1983 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
8c5eec2f | 16 | */ |
f78e116c | 17 | |
8c5eec2f | 18 | #ifndef lint |
b42768a6 KB |
19 | static char sccsid[] = "@(#)tape.c 5.15 (Berkeley) %G%"; |
20 | #endif /* not lint */ | |
ebd1f727 | 21 | |
f78e116c | 22 | #include "restore.h" |
d9127117 | 23 | #include <protocols/dumprestore.h> |
f78e116c KM |
24 | #include <sys/ioctl.h> |
25 | #include <sys/mtio.h> | |
2cb5dabb | 26 | #include <sys/file.h> |
f78e116c | 27 | #include <setjmp.h> |
a7b24fe9 | 28 | #include <sys/stat.h> |
2cb5dabb | 29 | |
bdeceadb | 30 | static long fssize = MAXBSIZE; |
2cb5dabb KM |
31 | static int mt = -1; |
32 | static int pipein = 0; | |
7eb08dfe | 33 | static char magtape[BUFSIZ]; |
19230a53 KM |
34 | static int bct; |
35 | static char *tbf; | |
2cb5dabb KM |
36 | static union u_spcl endoftapemark; |
37 | static long blksread; | |
170639fd | 38 | static long tapesread; |
2cb5dabb KM |
39 | static jmp_buf restart; |
40 | static int gettingfile = 0; /* restart has a valid frame */ | |
41 | ||
42 | static int ofile; | |
43 | static char *map; | |
44 | static char lnkbuf[MAXPATHLEN + 1]; | |
45 | static int pathlen; | |
f78e116c | 46 | |
b4c41341 KS |
47 | int Bcvt; /* Swap Bytes (for CCI or sun) */ |
48 | static int Qcvt; /* Swap quads (for sun) */ | |
f78e116c KM |
49 | /* |
50 | * Set up an input source | |
51 | */ | |
52 | setinput(source) | |
53 | char *source; | |
54 | { | |
e9e7ecc4 | 55 | #ifdef RRESTORE |
7eb08dfe | 56 | char *host, *tape; |
e9e7ecc4 | 57 | #endif RRESTORE |
f78e116c | 58 | |
19230a53 | 59 | flsht(); |
b97e998a KM |
60 | if (bflag) |
61 | newtapebuf(ntrec); | |
62 | else | |
63 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
9c695c61 | 64 | terminal = stdin; |
e9e7ecc4 | 65 | #ifdef RRESTORE |
f78e116c | 66 | host = source; |
7eb08dfe KM |
67 | tape = index(host, ':'); |
68 | if (tape == 0) { | |
f78e116c | 69 | nohost: |
5c5f44c7 | 70 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
71 | done(1); |
72 | } | |
7eb08dfe KM |
73 | *tape++ = '\0'; |
74 | (void) strcpy(magtape, tape); | |
f78e116c KM |
75 | if (rmthost(host) == 0) |
76 | done(1); | |
77 | setuid(getuid()); /* no longer need or want root privileges */ | |
78 | #else | |
9c695c61 | 79 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
80 | /* |
81 | * Since input is coming from a pipe we must establish | |
82 | * our own connection to the terminal. | |
83 | */ | |
84 | terminal = fopen("/dev/tty", "r"); | |
85 | if (terminal == NULL) { | |
b8eb5f1f KM |
86 | perror("Cannot open(\"/dev/tty\")"); |
87 | terminal = fopen("/dev/null", "r"); | |
88 | if (terminal == NULL) { | |
89 | perror("Cannot open(\"/dev/null\")"); | |
90 | done(1); | |
91 | } | |
b677c5d7 | 92 | } |
2cb5dabb | 93 | pipein++; |
2cb5dabb | 94 | } |
7eb08dfe | 95 | (void) strcpy(magtape, source); |
e9e7ecc4 | 96 | #endif RRESTORE |
f78e116c KM |
97 | } |
98 | ||
b97e998a KM |
99 | newtapebuf(size) |
100 | long size; | |
101 | { | |
102 | static tbfsize = -1; | |
103 | ||
104 | ntrec = size; | |
105 | if (size <= tbfsize) | |
106 | return; | |
107 | if (tbf != NULL) | |
108 | free(tbf); | |
109 | tbf = (char *)malloc(size * TP_BSIZE); | |
110 | if (tbf == NULL) { | |
111 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
112 | done(1); | |
113 | } | |
114 | tbfsize = size; | |
115 | } | |
116 | ||
f78e116c KM |
117 | /* |
118 | * Verify that the tape drive can be accessed and | |
119 | * that it actually is a dump tape. | |
120 | */ | |
121 | setup() | |
122 | { | |
2cb5dabb | 123 | int i, j, *ip; |
f78e116c | 124 | struct stat stbuf; |
f78e116c KM |
125 | extern int xtrmap(), xtrmapskip(); |
126 | ||
127 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 128 | #ifdef RRESTORE |
f78e116c KM |
129 | if ((mt = rmtopen(magtape, 0)) < 0) |
130 | #else | |
2cb5dabb KM |
131 | if (pipein) |
132 | mt = 0; | |
133 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
134 | #endif |
135 | { | |
e9e7ecc4 | 136 | perror(magtape); |
f78e116c KM |
137 | done(1); |
138 | } | |
768eb687 KM |
139 | volno = 1; |
140 | setdumpnum(); | |
f78e116c | 141 | flsht(); |
b97e998a KM |
142 | if (!pipein && !bflag) |
143 | findtapeblksize(); | |
5c5f44c7 | 144 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
145 | bct--; /* push back this block */ |
146 | cvtflag++; | |
5c5f44c7 | 147 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
148 | fprintf(stderr, "Tape is not a dump tape\n"); |
149 | done(1); | |
150 | } | |
151 | fprintf(stderr, "Converting to new file system format.\n"); | |
152 | } | |
2cb5dabb KM |
153 | if (pipein) { |
154 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
155 | endoftapemark.s_spcl.c_type = TS_END; | |
156 | ip = (int *)&endoftapemark; | |
157 | j = sizeof(union u_spcl) / sizeof(int); | |
158 | i = 0; | |
159 | do | |
160 | i += *ip++; | |
161 | while (--j); | |
162 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
163 | } | |
b32320ae KM |
164 | if (vflag || command == 't') |
165 | printdumpinfo(); | |
f78e116c | 166 | dumptime = spcl.c_ddate; |
2cb5dabb | 167 | dumpdate = spcl.c_date; |
f78e116c | 168 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 169 | perror("cannot stat ."); |
f78e116c KM |
170 | done(1); |
171 | } | |
bdeceadb KM |
172 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
173 | fssize = stbuf.st_blksize; | |
174 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
175 | fprintf(stderr, "bad block size %d\n", fssize); |
176 | done(1); | |
177 | } | |
2cb5dabb | 178 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
179 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
180 | done(1); | |
181 | } | |
2cb5dabb KM |
182 | if (readhdr(&spcl) == FAIL) |
183 | panic("no header after volume mark!\n"); | |
b32320ae | 184 | findinode(&spcl); |
2cb5dabb | 185 | if (checktype(&spcl, TS_CLRI) == FAIL) { |
f78e116c KM |
186 | fprintf(stderr, "Cannot find file removal list\n"); |
187 | done(1); | |
188 | } | |
2cb5dabb | 189 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 190 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 191 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
192 | if (map == (char *)NIL) |
193 | panic("no memory for file removal list\n"); | |
cf6db0ab | 194 | clrimap = map; |
f78e116c KM |
195 | curfile.action = USING; |
196 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 197 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
198 | fprintf(stderr, "Cannot find file dump list\n"); |
199 | done(1); | |
200 | } | |
7851e15d | 201 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
202 | if (map == (char *)NULL) |
203 | panic("no memory for file dump list\n"); | |
cf6db0ab | 204 | dumpmap = map; |
f78e116c KM |
205 | curfile.action = USING; |
206 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
207 | } |
208 | ||
170639fd KM |
209 | /* |
210 | * Prompt user to load a new dump volume. | |
211 | * "Nextvol" is the next suggested volume to use. | |
212 | * This suggested volume is enforced when doing full | |
213 | * or incremental restores, but can be overrridden by | |
214 | * the user when only extracting a subset of the files. | |
215 | */ | |
f78e116c KM |
216 | getvol(nextvol) |
217 | long nextvol; | |
218 | { | |
219 | long newvol; | |
170639fd | 220 | long savecnt, i; |
f78e116c KM |
221 | union u_spcl tmpspcl; |
222 | # define tmpbuf tmpspcl.s_spcl | |
b32320ae | 223 | char buf[TP_BSIZE]; |
cb2a63da | 224 | extern char *ctime(); |
f78e116c | 225 | |
a162cc0b | 226 | if (nextvol == 1) { |
170639fd | 227 | tapesread = 0; |
a162cc0b KM |
228 | gettingfile = 0; |
229 | } | |
2cb5dabb | 230 | if (pipein) { |
e108d3a2 | 231 | if (nextvol != 1) |
2cb5dabb | 232 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
233 | if (volno == 1) |
234 | return; | |
235 | goto gethdr; | |
2cb5dabb KM |
236 | } |
237 | savecnt = blksread; | |
f78e116c | 238 | again: |
e108d3a2 KM |
239 | if (pipein) |
240 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
241 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
242 | newvol = nextvol; | |
243 | else | |
244 | newvol = 0; | |
245 | while (newvol <= 0) { | |
170639fd KM |
246 | if (tapesread == 0) { |
247 | fprintf(stderr, "%s%s%s%s%s", | |
248 | "You have not read any tapes yet.\n", | |
249 | "Unless you know which volume your", | |
250 | " file(s) are on you should start\n", | |
251 | "with the last volume and work", | |
b4c41341 | 252 | " towards towards the first.\n"); |
170639fd KM |
253 | } else { |
254 | fprintf(stderr, "You have read volumes"); | |
255 | strcpy(tbf, ": "); | |
256 | for (i = 1; i < 32; i++) | |
257 | if (tapesread & (1 << i)) { | |
258 | fprintf(stderr, "%s%d", tbf, i); | |
259 | strcpy(tbf, ", "); | |
260 | } | |
261 | fprintf(stderr, "\n"); | |
262 | } | |
538cb7bb | 263 | do { |
b677c5d7 KM |
264 | fprintf(stderr, "Specify next volume #: "); |
265 | (void) fflush(stderr); | |
266 | (void) fgets(tbf, BUFSIZ, terminal); | |
267 | } while (!feof(terminal) && tbf[0] == '\n'); | |
268 | if (feof(terminal)) | |
538cb7bb | 269 | done(1); |
f78e116c KM |
270 | newvol = atoi(tbf); |
271 | if (newvol <= 0) { | |
272 | fprintf(stderr, | |
273 | "Volume numbers are positive numerics\n"); | |
274 | } | |
275 | } | |
170639fd KM |
276 | if (newvol == volno) { |
277 | tapesread |= 1 << volno; | |
f78e116c | 278 | return; |
170639fd | 279 | } |
f78e116c | 280 | closemt(); |
7eb08dfe KM |
281 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
282 | fprintf(stderr, "then enter tape name (default: %s) ", magtape); | |
b677c5d7 | 283 | (void) fflush(stderr); |
7eb08dfe KM |
284 | (void) fgets(tbf, BUFSIZ, terminal); |
285 | if (feof(terminal)) | |
286 | done(1); | |
287 | if (tbf[0] != '\n') { | |
288 | (void) strcpy(magtape, tbf); | |
289 | magtape[strlen(magtape) - 1] = '\0'; | |
290 | } | |
e9e7ecc4 | 291 | #ifdef RRESTORE |
f78e116c KM |
292 | if ((mt = rmtopen(magtape, 0)) == -1) |
293 | #else | |
294 | if ((mt = open(magtape, 0)) == -1) | |
295 | #endif | |
296 | { | |
7eb08dfe KM |
297 | fprintf(stderr, "Cannot open %s\n", magtape); |
298 | volno = -1; | |
f78e116c KM |
299 | goto again; |
300 | } | |
e108d3a2 | 301 | gethdr: |
f78e116c | 302 | volno = newvol; |
768eb687 | 303 | setdumpnum(); |
f78e116c | 304 | flsht(); |
2cb5dabb | 305 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
306 | fprintf(stderr, "tape is not dump tape\n"); |
307 | volno = 0; | |
308 | goto again; | |
309 | } | |
2cb5dabb | 310 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
311 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
312 | volno = 0; | |
313 | goto again; | |
314 | } | |
2cb5dabb | 315 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
316 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
317 | ctime(&tmpbuf.c_date)); | |
318 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
319 | volno = 0; |
320 | goto again; | |
321 | } | |
170639fd | 322 | tapesread |= 1 << volno; |
5c5f44c7 | 323 | blksread = savecnt; |
f78e116c KM |
324 | if (curfile.action == USING) { |
325 | if (volno == 1) | |
326 | panic("active file into volume 1\n"); | |
327 | return; | |
328 | } | |
b32320ae KM |
329 | /* |
330 | * Skip up to the beginning of the next record | |
331 | */ | |
8d412b7c | 332 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) |
b32320ae KM |
333 | for (i = tmpbuf.c_count; i > 0; i--) |
334 | readtape(buf); | |
5c5f44c7 | 335 | (void) gethead(&spcl); |
b32320ae | 336 | findinode(&spcl); |
f78e116c KM |
337 | if (gettingfile) { |
338 | gettingfile = 0; | |
339 | longjmp(restart, 1); | |
340 | } | |
341 | } | |
342 | ||
768eb687 KM |
343 | /* |
344 | * handle multiple dumps per tape by skipping forward to the | |
345 | * appropriate one. | |
346 | */ | |
347 | setdumpnum() | |
348 | { | |
349 | struct mtop tcom; | |
350 | ||
351 | if (dumpnum == 1 || volno != 1) | |
352 | return; | |
353 | if (pipein) { | |
354 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
355 | done(1); | |
356 | } | |
357 | tcom.mt_op = MTFSF; | |
358 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 359 | #ifdef RRESTORE |
768eb687 KM |
360 | rmtioctl(MTFSF, dumpnum - 1); |
361 | #else | |
538cb7bb | 362 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
363 | perror("ioctl MTFSF"); |
364 | #endif | |
365 | } | |
366 | ||
b32320ae KM |
367 | printdumpinfo() |
368 | { | |
cb2a63da | 369 | extern char *ctime(); |
b32320ae KM |
370 | |
371 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
f441de4a KM |
372 | fprintf(stdout, "Dumped from: %s", |
373 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
b32320ae KM |
374 | if (spcl.c_host[0] == '\0') |
375 | return; | |
376 | fprintf(stderr, "Level %d dump of %s on %s:%s\n", | |
377 | spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); | |
378 | fprintf(stderr, "Label: %s\n", spcl.c_label); | |
379 | } | |
380 | ||
f78e116c KM |
381 | extractfile(name) |
382 | char *name; | |
383 | { | |
384 | int mode; | |
385 | time_t timep[2]; | |
386 | struct entry *ep; | |
387 | extern int xtrlnkfile(), xtrlnkskip(); | |
388 | extern int xtrfile(), xtrskip(); | |
389 | ||
390 | curfile.name = name; | |
391 | curfile.action = USING; | |
392 | timep[0] = curfile.dip->di_atime; | |
393 | timep[1] = curfile.dip->di_mtime; | |
394 | mode = curfile.dip->di_mode; | |
395 | switch (mode & IFMT) { | |
396 | ||
397 | default: | |
398 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
399 | skipfile(); | |
400 | return (FAIL); | |
401 | ||
74e940f5 KM |
402 | case IFSOCK: |
403 | vprintf(stdout, "skipped socket %s\n", name); | |
404 | skipfile(); | |
405 | return (GOOD); | |
406 | ||
f78e116c KM |
407 | case IFDIR: |
408 | if (mflag) { | |
409 | ep = lookupname(name); | |
410 | if (ep == NIL || ep->e_flags & EXTRACT) | |
411 | panic("unextracted directory %s\n", name); | |
412 | skipfile(); | |
413 | return (GOOD); | |
414 | } | |
415 | vprintf(stdout, "extract file %s\n", name); | |
416 | return (genliteraldir(name, curfile.ino)); | |
417 | ||
418 | case IFLNK: | |
419 | lnkbuf[0] = '\0'; | |
420 | pathlen = 0; | |
421 | getfile(xtrlnkfile, xtrlnkskip); | |
422 | if (pathlen == 0) { | |
423 | vprintf(stdout, | |
424 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
425 | return (GOOD); |
426 | } | |
427 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
428 | |
429 | case IFCHR: | |
430 | case IFBLK: | |
431 | vprintf(stdout, "extract special file %s\n", name); | |
414c4f09 KM |
432 | if (Nflag) { |
433 | skipfile(); | |
434 | return (GOOD); | |
435 | } | |
f78e116c | 436 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { |
e9e7ecc4 KM |
437 | fprintf(stderr, "%s: ", name); |
438 | (void) fflush(stderr); | |
439 | perror("cannot create special file"); | |
f78e116c KM |
440 | skipfile(); |
441 | return (FAIL); | |
442 | } | |
768eb687 KM |
443 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
444 | (void) chmod(name, mode); | |
f78e116c KM |
445 | skipfile(); |
446 | utime(name, timep); | |
447 | return (GOOD); | |
448 | ||
449 | case IFREG: | |
450 | vprintf(stdout, "extract file %s\n", name); | |
414c4f09 KM |
451 | if (Nflag) { |
452 | skipfile(); | |
453 | return (GOOD); | |
454 | } | |
15aeb519 | 455 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
456 | fprintf(stderr, "%s: ", name); |
457 | (void) fflush(stderr); | |
458 | perror("cannot create file"); | |
f78e116c KM |
459 | skipfile(); |
460 | return (FAIL); | |
461 | } | |
768eb687 KM |
462 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
463 | (void) fchmod(ofile, mode); | |
f78e116c | 464 | getfile(xtrfile, xtrskip); |
768eb687 | 465 | (void) close(ofile); |
f78e116c KM |
466 | utime(name, timep); |
467 | return (GOOD); | |
468 | } | |
469 | /* NOTREACHED */ | |
470 | } | |
471 | ||
e108d3a2 KM |
472 | /* |
473 | * skip over bit maps on the tape | |
474 | */ | |
475 | skipmaps() | |
476 | { | |
477 | ||
478 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
479 | checktype(&spcl, TS_BITS) == GOOD) | |
480 | skipfile(); | |
481 | } | |
482 | ||
483 | /* | |
484 | * skip over a file on the tape | |
485 | */ | |
f78e116c KM |
486 | skipfile() |
487 | { | |
488 | extern int null(); | |
489 | ||
490 | curfile.action = SKIP; | |
491 | getfile(null, null); | |
492 | } | |
493 | ||
494 | /* | |
495 | * Do the file extraction, calling the supplied functions | |
496 | * with the blocks | |
497 | */ | |
498 | getfile(f1, f2) | |
499 | int (*f2)(), (*f1)(); | |
500 | { | |
501 | register int i; | |
502 | int curblk = 0; | |
503 | off_t size = spcl.c_dinode.di_size; | |
504 | static char clearedbuf[MAXBSIZE]; | |
505 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
4f8ea093 | 506 | char junk[TP_BSIZE]; |
f78e116c | 507 | |
2cb5dabb | 508 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 509 | panic("ran off end of tape\n"); |
e108d3a2 | 510 | if (ishead(&spcl) == FAIL) |
f78e116c | 511 | panic("not at beginning of a file\n"); |
e108d3a2 | 512 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
513 | return; |
514 | gettingfile++; | |
515 | loop: | |
516 | for (i = 0; i < spcl.c_count; i++) { | |
517 | if (spcl.c_addr[i]) { | |
518 | readtape(&buf[curblk++][0]); | |
519 | if (curblk == fssize / TP_BSIZE) { | |
520 | (*f1)(buf, size > TP_BSIZE ? | |
521 | (long) (fssize) : | |
522 | (curblk - 1) * TP_BSIZE + size); | |
523 | curblk = 0; | |
524 | } | |
525 | } else { | |
526 | if (curblk > 0) { | |
527 | (*f1)(buf, size > TP_BSIZE ? | |
528 | (long) (curblk * TP_BSIZE) : | |
529 | (curblk - 1) * TP_BSIZE + size); | |
530 | curblk = 0; | |
531 | } | |
532 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
533 | (long) TP_BSIZE : size); | |
534 | } | |
4f8ea093 KM |
535 | if ((size -= TP_BSIZE) <= 0) { |
536 | for (i++; i < spcl.c_count; i++) | |
537 | if (spcl.c_addr[i]) | |
538 | readtape(junk); | |
9f13f26d | 539 | break; |
4f8ea093 | 540 | } |
f78e116c | 541 | } |
5c5f44c7 | 542 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
543 | if (checktype(&spcl, TS_ADDR) == GOOD) |
544 | goto loop; | |
768eb687 | 545 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 546 | curfile.name); |
f78e116c | 547 | } |
9f13f26d | 548 | if (curblk > 0) |
f78e116c | 549 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
b32320ae | 550 | findinode(&spcl); |
f78e116c KM |
551 | gettingfile = 0; |
552 | } | |
553 | ||
554 | /* | |
555 | * The next routines are called during file extraction to | |
556 | * put the data into the right form and place. | |
557 | */ | |
558 | xtrfile(buf, size) | |
559 | char *buf; | |
560 | long size; | |
561 | { | |
562 | ||
414c4f09 KM |
563 | if (Nflag) |
564 | return; | |
f78e116c KM |
565 | if (write(ofile, buf, (int) size) == -1) { |
566 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
567 | curfile.ino, curfile.name); | |
568 | perror("write"); | |
569 | done(1); | |
570 | } | |
571 | } | |
572 | ||
573 | xtrskip(buf, size) | |
574 | char *buf; | |
575 | long size; | |
576 | { | |
577 | ||
578 | #ifdef lint | |
579 | buf = buf; | |
580 | #endif | |
581 | if (lseek(ofile, size, 1) == (long)-1) { | |
582 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
583 | curfile.ino, curfile.name); | |
584 | perror("lseek"); | |
585 | done(1); | |
586 | } | |
587 | } | |
588 | ||
589 | xtrlnkfile(buf, size) | |
590 | char *buf; | |
591 | long size; | |
592 | { | |
593 | ||
594 | pathlen += size; | |
595 | if (pathlen > MAXPATHLEN) { | |
596 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
597 | curfile.name, lnkbuf, buf, pathlen); | |
598 | done(1); | |
599 | } | |
538cb7bb | 600 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
601 | } |
602 | ||
603 | xtrlnkskip(buf, size) | |
604 | char *buf; | |
605 | long size; | |
606 | { | |
607 | ||
608 | #ifdef lint | |
609 | buf = buf, size = size; | |
610 | #endif | |
611 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
612 | curfile.name); | |
613 | done(1); | |
614 | } | |
615 | ||
616 | xtrmap(buf, size) | |
617 | char *buf; | |
618 | long size; | |
619 | { | |
620 | ||
621 | bcopy(buf, map, size); | |
cf6db0ab | 622 | map += size; |
f78e116c KM |
623 | } |
624 | ||
625 | xtrmapskip(buf, size) | |
626 | char *buf; | |
627 | long size; | |
628 | { | |
629 | ||
630 | #ifdef lint | |
631 | buf = buf; | |
f78e116c KM |
632 | #endif |
633 | panic("hole in map\n"); | |
cf6db0ab | 634 | map += size; |
f78e116c KM |
635 | } |
636 | ||
637 | null() {;} | |
638 | ||
639 | /* | |
640 | * Do the tape i/o, dealing with volume changes | |
641 | * etc.. | |
642 | */ | |
643 | readtape(b) | |
644 | char *b; | |
645 | { | |
646 | register long i; | |
7851e15d KM |
647 | long rd, newvol; |
648 | int cnt; | |
f78e116c | 649 | |
b97e998a KM |
650 | if (bct < ntrec) { |
651 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
652 | blksread++; | |
653 | return; | |
654 | } | |
655 | for (i = 0; i < ntrec; i++) | |
656 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
657 | bct = 0; | |
658 | cnt = ntrec*TP_BSIZE; | |
659 | rd = 0; | |
660 | getmore: | |
e9e7ecc4 | 661 | #ifdef RRESTORE |
b97e998a | 662 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 663 | #else |
b97e998a | 664 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 665 | #endif |
b97e998a KM |
666 | if (i > 0 && i != ntrec*TP_BSIZE) { |
667 | if (pipein) { | |
74025ab9 KM |
668 | rd += i; |
669 | cnt -= i; | |
670 | if (cnt > 0) | |
671 | goto getmore; | |
672 | i = rd; | |
b97e998a KM |
673 | } else { |
674 | if (i % TP_BSIZE != 0) | |
675 | panic("partial block read: %d should be %d\n", | |
676 | i, ntrec * TP_BSIZE); | |
677 | bcopy((char *)&endoftapemark, &tbf[i], | |
678 | (long)TP_BSIZE); | |
74025ab9 | 679 | } |
b97e998a KM |
680 | } |
681 | if (i < 0) { | |
682 | fprintf(stderr, "Tape read error while "); | |
683 | switch (curfile.action) { | |
684 | default: | |
685 | fprintf(stderr, "trying to set up tape\n"); | |
686 | break; | |
687 | case UNKNOWN: | |
bf7abb47 | 688 | fprintf(stderr, "trying to resynchronize\n"); |
b97e998a KM |
689 | break; |
690 | case USING: | |
691 | fprintf(stderr, "restoring %s\n", curfile.name); | |
692 | break; | |
693 | case SKIP: | |
694 | fprintf(stderr, "skipping over inode %d\n", | |
695 | curfile.ino); | |
696 | break; | |
697 | } | |
698 | if (!yflag && !reply("continue")) | |
699 | done(1); | |
700 | i = ntrec*TP_BSIZE; | |
701 | bzero(tbf, i); | |
e9e7ecc4 | 702 | #ifdef RRESTORE |
b97e998a | 703 | if (rmtseek(i, 1) < 0) |
f78e116c | 704 | #else |
b97e998a | 705 | if (lseek(mt, i, 1) == (long)-1) |
f78e116c | 706 | #endif |
b97e998a KM |
707 | { |
708 | perror("continuation failed"); | |
709 | done(1); | |
f78e116c | 710 | } |
b97e998a KM |
711 | } |
712 | if (i == 0) { | |
ad073f89 KM |
713 | if (!pipein) { |
714 | newvol = volno + 1; | |
715 | volno = 0; | |
716 | getvol(newvol); | |
717 | readtape(b); | |
f78e116c KM |
718 | return; |
719 | } | |
ad073f89 KM |
720 | if (rd % TP_BSIZE != 0) |
721 | panic("partial block read: %d should be %d\n", | |
722 | rd, ntrec * TP_BSIZE); | |
723 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c KM |
724 | } |
725 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 726 | blksread++; |
f78e116c KM |
727 | } |
728 | ||
b97e998a KM |
729 | findtapeblksize() |
730 | { | |
731 | register long i; | |
732 | ||
733 | for (i = 0; i < ntrec; i++) | |
734 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
735 | bct = 0; | |
736 | #ifdef RRESTORE | |
737 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
738 | #else | |
739 | i = read(mt, tbf, ntrec * TP_BSIZE); | |
740 | #endif | |
741 | if (i <= 0) { | |
742 | perror("Tape read error"); | |
743 | done(1); | |
744 | } | |
745 | if (i % TP_BSIZE != 0) { | |
746 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
747 | i, "is not a multiple of dump block size", TP_BSIZE); | |
748 | done(1); | |
749 | } | |
750 | ntrec = i / TP_BSIZE; | |
751 | vprintf(stdout, "Tape block size is %d\n", ntrec); | |
752 | } | |
753 | ||
f78e116c KM |
754 | flsht() |
755 | { | |
756 | ||
19230a53 | 757 | bct = ntrec+1; |
f78e116c KM |
758 | } |
759 | ||
f78e116c KM |
760 | closemt() |
761 | { | |
762 | if (mt < 0) | |
763 | return; | |
e9e7ecc4 | 764 | #ifdef RRESTORE |
f78e116c KM |
765 | rmtclose(); |
766 | #else | |
768eb687 | 767 | (void) close(mt); |
f78e116c KM |
768 | #endif |
769 | } | |
770 | ||
771 | checkvol(b, t) | |
772 | struct s_spcl *b; | |
773 | long t; | |
774 | { | |
775 | ||
2cb5dabb KM |
776 | if (b->c_volume != t) |
777 | return(FAIL); | |
778 | return(GOOD); | |
f78e116c KM |
779 | } |
780 | ||
781 | readhdr(b) | |
782 | struct s_spcl *b; | |
783 | { | |
784 | ||
5c5f44c7 | 785 | if (gethead(b) == FAIL) { |
768eb687 | 786 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 787 | return(FAIL); |
5c5f44c7 | 788 | } |
2cb5dabb | 789 | return(GOOD); |
f78e116c KM |
790 | } |
791 | ||
792 | /* | |
793 | * read the tape into buf, then return whether or | |
794 | * or not it is a header block. | |
795 | */ | |
796 | gethead(buf) | |
797 | struct s_spcl *buf; | |
798 | { | |
b4c41341 | 799 | long i, *j; |
f78e116c KM |
800 | union u_ospcl { |
801 | char dummy[TP_BSIZE]; | |
802 | struct s_ospcl { | |
2cb5dabb KM |
803 | long c_type; |
804 | long c_date; | |
805 | long c_ddate; | |
806 | long c_volume; | |
807 | long c_tapea; | |
cf6db0ab | 808 | u_short c_inumber; |
2cb5dabb KM |
809 | long c_magic; |
810 | long c_checksum; | |
f78e116c KM |
811 | struct odinode { |
812 | unsigned short odi_mode; | |
cf6db0ab KM |
813 | u_short odi_nlink; |
814 | u_short odi_uid; | |
815 | u_short odi_gid; | |
2cb5dabb KM |
816 | long odi_size; |
817 | long odi_rdev; | |
f78e116c | 818 | char odi_addr[36]; |
2cb5dabb KM |
819 | long odi_atime; |
820 | long odi_mtime; | |
821 | long odi_ctime; | |
f78e116c | 822 | } c_dinode; |
2cb5dabb KM |
823 | long c_count; |
824 | char c_addr[256]; | |
f78e116c KM |
825 | } s_ospcl; |
826 | } u_ospcl; | |
827 | ||
828 | if (!cvtflag) { | |
829 | readtape((char *)buf); | |
b4c41341 KS |
830 | if (buf->c_magic != NFS_MAGIC) { |
831 | if (swabl(buf->c_magic) != NFS_MAGIC) | |
832 | return (FAIL); | |
833 | if (!Bcvt) { | |
834 | vprintf(stdout, "Note: Doing Byte swapping\n"); | |
835 | Bcvt = 1; | |
836 | } | |
837 | } | |
838 | if (checksum((int *)buf) == FAIL) | |
839 | return (FAIL); | |
840 | if (Bcvt) | |
841 | swabst("8l4s31l", (char *)buf); | |
5c5f44c7 | 842 | goto good; |
f78e116c KM |
843 | } |
844 | readtape((char *)(&u_ospcl.s_ospcl)); | |
845 | bzero((char *)buf, (long)TP_BSIZE); | |
846 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
847 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
848 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
849 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
850 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
851 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
852 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
853 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
854 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
855 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
856 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
857 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
858 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
859 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
860 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
861 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
862 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
863 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 864 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 865 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 866 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 867 | return(FAIL); |
f78e116c | 868 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
869 | |
870 | good: | |
b4c41341 KS |
871 | j = buf->c_dinode.di_ic.ic_size.val; |
872 | i = j[1]; | |
873 | if (buf->c_dinode.di_size == 0 && | |
874 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt==0) { | |
875 | if (*j || i) { | |
876 | printf("Note: Doing Quad swapping\n"); | |
877 | Qcvt = 1; | |
878 | } | |
879 | } | |
880 | if (Qcvt) { | |
881 | j[1] = *j; *j = i; | |
882 | } | |
5c5f44c7 KM |
883 | switch (buf->c_type) { |
884 | ||
885 | case TS_CLRI: | |
886 | case TS_BITS: | |
887 | /* | |
888 | * Have to patch up missing information in bit map headers | |
889 | */ | |
890 | buf->c_inumber = 0; | |
891 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
892 | for (i = 0; i < buf->c_count; i++) | |
893 | buf->c_addr[i]++; | |
894 | break; | |
895 | ||
896 | case TS_TAPE: | |
897 | case TS_END: | |
898 | buf->c_inumber = 0; | |
899 | break; | |
900 | ||
901 | case TS_INODE: | |
902 | case TS_ADDR: | |
903 | break; | |
904 | ||
905 | default: | |
906 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
907 | break; | |
908 | } | |
2cb5dabb KM |
909 | if (dflag) |
910 | accthdr(buf); | |
911 | return(GOOD); | |
912 | } | |
913 | ||
914 | /* | |
915 | * Check that a header is where it belongs and predict the next header | |
916 | */ | |
917 | accthdr(header) | |
918 | struct s_spcl *header; | |
919 | { | |
7851e15d | 920 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
921 | static int prevtype; |
922 | static long predict; | |
923 | long blks, i; | |
924 | ||
8d412b7c | 925 | if (header->c_type == TS_TAPE) { |
5c5f44c7 | 926 | fprintf(stderr, "Volume header\n"); |
b8f4e820 | 927 | previno = 0x7fffffff; |
5c5f44c7 KM |
928 | return; |
929 | } | |
7851e15d | 930 | if (previno == 0x7fffffff) |
2cb5dabb KM |
931 | goto newcalc; |
932 | switch (prevtype) { | |
2cb5dabb | 933 | case TS_BITS: |
5c5f44c7 | 934 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
935 | break; |
936 | case TS_CLRI: | |
5c5f44c7 | 937 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
938 | break; |
939 | case TS_INODE: | |
5c5f44c7 | 940 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
941 | break; |
942 | case TS_ADDR: | |
5c5f44c7 | 943 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
944 | break; |
945 | case TS_END: | |
5c5f44c7 | 946 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
947 | break; |
948 | } | |
2cb5dabb KM |
949 | if (predict != blksread - 1) |
950 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
951 | predict, blksread - 1); | |
952 | fprintf(stderr, "\n"); | |
953 | newcalc: | |
954 | blks = 0; | |
5c5f44c7 | 955 | if (header->c_type != TS_END) |
2cb5dabb KM |
956 | for (i = 0; i < header->c_count; i++) |
957 | if (header->c_addr[i] != 0) | |
958 | blks++; | |
959 | predict = blks; | |
960 | blksread = 0; | |
961 | prevtype = header->c_type; | |
962 | previno = header->c_inumber; | |
f78e116c KM |
963 | } |
964 | ||
965 | /* | |
966 | * Find an inode header. | |
967 | * Complain if had to skip, and complain is set. | |
968 | */ | |
b32320ae | 969 | findinode(header) |
f78e116c | 970 | struct s_spcl *header; |
f78e116c | 971 | { |
2cb5dabb | 972 | static long skipcnt = 0; |
b8f4e820 KM |
973 | long i; |
974 | char buf[TP_BSIZE]; | |
f78e116c KM |
975 | |
976 | curfile.name = "<name unknown>"; | |
977 | curfile.action = UNKNOWN; | |
978 | curfile.dip = (struct dinode *)NIL; | |
979 | curfile.ino = 0; | |
2cb5dabb KM |
980 | if (ishead(header) == FAIL) { |
981 | skipcnt++; | |
7702e9a8 | 982 | while (gethead(header) == FAIL || header->c_date != dumpdate) |
f78e116c | 983 | skipcnt++; |
2cb5dabb | 984 | } |
f78e116c | 985 | for (;;) { |
b8f4e820 KM |
986 | if (checktype(header, TS_ADDR) == GOOD) { |
987 | /* | |
988 | * Skip up to the beginning of the next record | |
989 | */ | |
990 | for (i = 0; i < header->c_count; i++) | |
991 | if (header->c_addr[i]) | |
992 | readtape(buf); | |
993 | (void) gethead(header); | |
994 | continue; | |
995 | } | |
2cb5dabb | 996 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
997 | curfile.dip = &header->c_dinode; |
998 | curfile.ino = header->c_inumber; | |
999 | break; | |
1000 | } | |
2cb5dabb | 1001 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
1002 | curfile.ino = maxino; |
1003 | break; | |
1004 | } | |
2cb5dabb | 1005 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 1006 | curfile.name = "<file removal list>"; |
e108d3a2 | 1007 | break; |
f78e116c | 1008 | } |
2cb5dabb | 1009 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 1010 | curfile.name = "<file dump list>"; |
e108d3a2 | 1011 | break; |
f78e116c | 1012 | } |
2cb5dabb | 1013 | while (gethead(header) == FAIL) |
f78e116c KM |
1014 | skipcnt++; |
1015 | } | |
b32320ae | 1016 | if (skipcnt > 0) |
dd1900f1 | 1017 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
1018 | skipcnt = 0; |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * return whether or not the buffer contains a header block | |
1023 | */ | |
1024 | ishead(buf) | |
1025 | struct s_spcl *buf; | |
1026 | { | |
1027 | ||
1028 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
1029 | return(FAIL); |
1030 | return(GOOD); | |
f78e116c KM |
1031 | } |
1032 | ||
1033 | checktype(b, t) | |
1034 | struct s_spcl *b; | |
1035 | int t; | |
1036 | { | |
1037 | ||
2cb5dabb KM |
1038 | if (b->c_type != t) |
1039 | return(FAIL); | |
1040 | return(GOOD); | |
f78e116c KM |
1041 | } |
1042 | ||
1043 | checksum(b) | |
1044 | register int *b; | |
1045 | { | |
1046 | register int i, j; | |
1047 | ||
1048 | j = sizeof(union u_spcl) / sizeof(int); | |
1049 | i = 0; | |
b4c41341 KS |
1050 | if(!Bcvt) { |
1051 | do | |
1052 | i += *b++; | |
1053 | while (--j); | |
1054 | } else { | |
1055 | /* What happens if we want to read restore tapes | |
1056 | for a 16bit int machine??? */ | |
1057 | do | |
1058 | i += swabl(*b++); | |
1059 | while (--j); | |
1060 | } | |
1061 | ||
f78e116c KM |
1062 | if (i != CHECKSUM) { |
1063 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
1064 | curfile.ino, curfile.name); | |
2cb5dabb | 1065 | return(FAIL); |
f78e116c | 1066 | } |
2cb5dabb | 1067 | return(GOOD); |
f78e116c KM |
1068 | } |
1069 | ||
e9e7ecc4 | 1070 | #ifdef RRESTORE |
74025ab9 | 1071 | /* VARARGS1 */ |
f78e116c KM |
1072 | msg(cp, a1, a2, a3) |
1073 | char *cp; | |
1074 | { | |
1075 | ||
1076 | fprintf(stderr, cp, a1, a2, a3); | |
1077 | } | |
e9e7ecc4 | 1078 | #endif RRESTORE |
b4c41341 KS |
1079 | |
1080 | swabst(cp, sp) | |
1081 | register char *cp, *sp; | |
1082 | { | |
1083 | int n = 0; | |
1084 | char c; | |
1085 | while(*cp) { | |
1086 | switch (*cp) { | |
1087 | case '0': case '1': case '2': case '3': case '4': | |
1088 | case '5': case '6': case '7': case '8': case '9': | |
1089 | n = (n * 10) + (*cp++ - '0'); | |
1090 | continue; | |
1091 | ||
1092 | case 's': case 'w': case 'h': | |
1093 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1094 | sp++; | |
1095 | break; | |
1096 | ||
1097 | case 'l': | |
1098 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
1099 | c = sp[2]; sp[2] = sp[1]; sp[1] = c; | |
1100 | sp += 3; | |
1101 | } | |
1102 | sp++; /* Any other character, like 'b' counts as byte. */ | |
1103 | if (n <= 1) { | |
1104 | n = 0; cp++; | |
1105 | } else | |
1106 | n--; | |
1107 | } | |
1108 | } | |
1109 | swabl(x) { unsigned long l = x; swabst("l", (char *)&l); return l; } |