]>
Commit | Line | Data |
---|---|---|
1227625a SP |
1 | /* |
2 | * Ported to Linux's Second Extended File System as part of the | |
3 | * dump and restore backup suit | |
b45f51d6 SP |
4 | * Remy Card <card@Linux.EU.Org>, 1994-1997 |
5 | * Stelian Pop <pop@cybercable.fr>, 1999 | |
1227625a SP |
6 | * |
7 | */ | |
8 | ||
9 | /* | |
10 | * Copyright (c) 1983, 1993 | |
11 | * The Regents of the University of California. All rights reserved. | |
12 | * (c) UNIX System Laboratories, Inc. | |
13 | * All or some portions of this file are derived from material licensed | |
14 | * to the University of California by American Telephone and Telegraph | |
15 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
16 | * the permission of UNIX System Laboratories, Inc. | |
17 | * | |
18 | * Redistribution and use in source and binary forms, with or without | |
19 | * modification, are permitted provided that the following conditions | |
20 | * are met: | |
21 | * 1. Redistributions of source code must retain the above copyright | |
22 | * notice, this list of conditions and the following disclaimer. | |
23 | * 2. Redistributions in binary form must reproduce the above copyright | |
24 | * notice, this list of conditions and the following disclaimer in the | |
25 | * documentation and/or other materials provided with the distribution. | |
26 | * 3. All advertising materials mentioning features or use of this software | |
27 | * must display the following acknowledgement: | |
28 | * This product includes software developed by the University of | |
29 | * California, Berkeley and its contributors. | |
30 | * 4. Neither the name of the University nor the names of its contributors | |
31 | * may be used to endorse or promote products derived from this software | |
32 | * without specific prior written permission. | |
33 | * | |
34 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
35 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
36 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
37 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
38 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
39 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
40 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
41 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
42 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
43 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
44 | * SUCH DAMAGE. | |
ec387a12 SP |
45 | * |
46 | * $Id: tape.c,v 1.5 1999/10/11 13:31:13 stelian Exp $ | |
1227625a SP |
47 | */ |
48 | ||
1227625a SP |
49 | #include <sys/param.h> |
50 | #include <sys/file.h> | |
1227625a SP |
51 | #include <sys/mtio.h> |
52 | #include <sys/stat.h> | |
53 | ||
54 | #ifdef __linux__ | |
55 | #include <sys/time.h> | |
56 | #include <linux/ext2_fs.h> | |
57 | #include <bsdcompat.h> | |
58 | #else /* __linux__ */ | |
59 | #include <ufs/ufs/dinode.h> | |
60 | #endif /* __linux__ */ | |
61 | #include <protocols/dumprestore.h> | |
62 | ||
63 | #include <errno.h> | |
ddd2ef55 | 64 | #include <compaterr.h> |
1227625a SP |
65 | #include <setjmp.h> |
66 | #include <stdio.h> | |
67 | #include <stdlib.h> | |
68 | #include <string.h> | |
69 | #include <unistd.h> | |
70 | ||
71 | #ifdef __linux__ | |
72 | #include <ext2fs/ext2fs.h> | |
73 | #endif | |
74 | ||
75 | #include "restore.h" | |
76 | #include "extern.h" | |
77 | #include "pathnames.h" | |
78 | ||
79 | static long fssize = MAXBSIZE; | |
80 | static int mt = -1; | |
81 | static int pipein = 0; | |
b45f51d6 | 82 | static char *magtape; |
1227625a SP |
83 | static int blkcnt; |
84 | static int numtrec; | |
85 | static char *tapebuf; | |
86 | static union u_spcl endoftapemark; | |
87 | static long blksread; /* blocks read since last header */ | |
88 | static long tpblksread = 0; /* TP_BSIZE blocks read */ | |
89 | static long tapesread; | |
ddd2ef55 | 90 | static sigjmp_buf restart; |
1227625a SP |
91 | static int gettingfile = 0; /* restart has a valid frame */ |
92 | static char *host = NULL; | |
93 | ||
94 | static int ofile; | |
95 | static char *map; | |
96 | static char lnkbuf[MAXPATHLEN + 1]; | |
97 | static int pathlen; | |
98 | ||
99 | int oldinofmt; /* old inode format conversion required */ | |
100 | int Bcvt; /* Swap Bytes (for CCI or sun) */ | |
101 | static int Qcvt; /* Swap quads (for sun) */ | |
102 | ||
103 | #define FLUSHTAPEBUF() blkcnt = ntrec + 1 | |
104 | ||
105 | static void accthdr __P((struct s_spcl *)); | |
106 | static int checksum __P((int *)); | |
107 | static void findinode __P((struct s_spcl *)); | |
108 | static void findtapeblksize __P((void)); | |
109 | static int gethead __P((struct s_spcl *)); | |
110 | static void readtape __P((char *)); | |
111 | static void setdumpnum __P((void)); | |
ddd2ef55 | 112 | static u_int swabi __P((u_int)); |
1227625a | 113 | static u_long swabl __P((u_long)); |
ddd2ef55 SP |
114 | static u_char *swab64 __P((u_char *, int)); |
115 | static u_char *swab32 __P((u_char *, int)); | |
116 | static u_char *swab16 __P((u_char *, int)); | |
1227625a | 117 | static void terminateinput __P((void)); |
ddd2ef55 SP |
118 | static void xtrfile __P((char *, size_t)); |
119 | static void xtrlnkfile __P((char *, size_t)); | |
120 | static void xtrlnkskip __P((char *, size_t)); | |
121 | static void xtrmap __P((char *, size_t)); | |
122 | static void xtrmapskip __P((char *, size_t)); | |
123 | static void xtrskip __P((char *, size_t)); | |
1227625a | 124 | |
b45f51d6 SP |
125 | static int readmapflag; |
126 | ||
1227625a SP |
127 | /* |
128 | * Set up an input source | |
129 | */ | |
130 | void | |
ddd2ef55 | 131 | setinput(char *source) |
1227625a SP |
132 | { |
133 | FLUSHTAPEBUF(); | |
134 | if (bflag) | |
135 | newtapebuf(ntrec); | |
136 | else | |
137 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
138 | terminal = stdin; | |
139 | ||
140 | #ifdef RRESTORE | |
141 | if (strchr(source, ':')) { | |
142 | host = source; | |
143 | source = strchr(host, ':'); | |
144 | *source++ = '\0'; | |
145 | if (rmthost(host) == 0) | |
ddd2ef55 | 146 | exit(1); |
1227625a SP |
147 | } else |
148 | #endif | |
149 | if (strcmp(source, "-") == 0) { | |
150 | /* | |
151 | * Since input is coming from a pipe we must establish | |
152 | * our own connection to the terminal. | |
153 | */ | |
154 | terminal = fopen(_PATH_TTY, "r"); | |
155 | if (terminal == NULL) { | |
ddd2ef55 | 156 | warn("cannot open %s", _PATH_TTY); |
1227625a | 157 | terminal = fopen(_PATH_DEVNULL, "r"); |
ddd2ef55 SP |
158 | if (terminal == NULL) |
159 | err(1, "cannot open %s", _PATH_DEVNULL); | |
1227625a SP |
160 | } |
161 | pipein++; | |
162 | } | |
163 | setuid(getuid()); /* no longer need or want root privileges */ | |
b45f51d6 | 164 | magtape = strdup(source); |
ddd2ef55 SP |
165 | if (magtape == NULL) |
166 | errx(1, "Cannot allocate space for magtape buffer"); | |
1227625a SP |
167 | } |
168 | ||
169 | void | |
ddd2ef55 | 170 | newtapebuf(long size) |
1227625a | 171 | { |
ddd2ef55 | 172 | static int tapebufsize = -1; |
1227625a SP |
173 | |
174 | ntrec = size; | |
175 | if (size <= tapebufsize) | |
176 | return; | |
177 | if (tapebuf != NULL) | |
178 | free(tapebuf); | |
179 | tapebuf = malloc(size * TP_BSIZE); | |
ddd2ef55 SP |
180 | if (tapebuf == NULL) |
181 | errx(1, "Cannot allocate space for tape buffer"); | |
1227625a SP |
182 | tapebufsize = size; |
183 | } | |
184 | ||
185 | /* | |
186 | * Verify that the tape drive can be accessed and | |
187 | * that it actually is a dump tape. | |
188 | */ | |
189 | void | |
ddd2ef55 | 190 | setup(void) |
1227625a SP |
191 | { |
192 | int i, j, *ip; | |
193 | struct stat stbuf; | |
194 | ||
ddd2ef55 | 195 | Vprintf(stdout, "Verify tape and initialize maps\n"); |
1227625a SP |
196 | #ifdef RRESTORE |
197 | if (host) | |
198 | mt = rmtopen(magtape, 0); | |
199 | else | |
200 | #endif | |
201 | if (pipein) | |
202 | mt = 0; | |
203 | else | |
204 | mt = open(magtape, O_RDONLY, 0); | |
ddd2ef55 SP |
205 | if (mt < 0) |
206 | err(1, "%s", magtape); | |
1227625a SP |
207 | volno = 1; |
208 | setdumpnum(); | |
209 | FLUSHTAPEBUF(); | |
210 | if (!pipein && !bflag) | |
211 | findtapeblksize(); | |
212 | if (gethead(&spcl) == FAIL) { | |
213 | blkcnt--; /* push back this block */ | |
214 | blksread--; | |
215 | tpblksread--; | |
216 | cvtflag++; | |
ddd2ef55 SP |
217 | if (gethead(&spcl) == FAIL) |
218 | errx(1, "Tape is not a dump tape"); | |
1227625a SP |
219 | fprintf(stderr, "Converting to new file system format.\n"); |
220 | } | |
221 | if (pipein) { | |
222 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
223 | endoftapemark.s_spcl.c_type = TS_END; | |
224 | ip = (int *)&endoftapemark; | |
225 | j = sizeof(union u_spcl) / sizeof(int); | |
226 | i = 0; | |
227 | do | |
228 | i += *ip++; | |
229 | while (--j); | |
230 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
231 | } | |
232 | if (vflag || command == 't' || command == 'C') | |
233 | printdumpinfo(); | |
234 | if (filesys == NULL) { | |
235 | filesys = spcl.c_filesys; | |
236 | } | |
237 | dumptime = spcl.c_ddate; | |
238 | dumpdate = spcl.c_date; | |
ddd2ef55 SP |
239 | if (stat(".", &stbuf) < 0) |
240 | err(1, "cannot stat ."); | |
b45f51d6 SP |
241 | if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE ) |
242 | fssize = TP_BSIZE; | |
243 | if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE) | |
1227625a | 244 | fssize = stbuf.st_blksize; |
ddd2ef55 SP |
245 | if (((fssize - 1) & fssize) != 0) |
246 | errx(1, "bad block size %ld", fssize); | |
247 | if (spcl.c_volume != 1) | |
248 | errx(1, "Tape is not volume 1 of the dump"); | |
1227625a | 249 | if (gethead(&spcl) == FAIL) { |
ddd2ef55 | 250 | Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread); |
1227625a SP |
251 | panic("no header after volume mark!\n"); |
252 | } | |
253 | findinode(&spcl); | |
ddd2ef55 SP |
254 | if (spcl.c_type != TS_CLRI) |
255 | errx(1, "Cannot find file removal list"); | |
1227625a | 256 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
ddd2ef55 | 257 | Dprintf(stdout, "maxino = %ld\n", maxino); |
1227625a SP |
258 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
259 | if (map == NULL) | |
260 | panic("no memory for active inode map\n"); | |
261 | usedinomap = map; | |
262 | curfile.action = USING; | |
263 | getfile(xtrmap, xtrmapskip); | |
ddd2ef55 SP |
264 | if (spcl.c_type != TS_BITS) |
265 | errx(1, "Cannot find file dump list"); | |
1227625a SP |
266 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
267 | if (map == (char *)NULL) | |
268 | panic("no memory for file dump list\n"); | |
269 | dumpmap = map; | |
270 | curfile.action = USING; | |
271 | getfile(xtrmap, xtrmapskip); | |
272 | /* | |
273 | * If there may be whiteout entries on the tape, pretend that the | |
274 | * whiteout inode exists, so that the whiteout entries can be | |
275 | * extracted. | |
276 | */ | |
277 | if (oldinofmt == 0) | |
278 | SETINO(WINO, dumpmap); | |
279 | } | |
280 | ||
281 | /* | |
282 | * Prompt user to load a new dump volume. | |
283 | * "Nextvol" is the next suggested volume to use. | |
284 | * This suggested volume is enforced when doing full | |
b45f51d6 | 285 | * or incremental restores, but can be overridden by |
1227625a SP |
286 | * the user when only extracting a subset of the files. |
287 | */ | |
288 | void | |
ddd2ef55 | 289 | getvol(long nextvol) |
1227625a | 290 | { |
ddd2ef55 | 291 | long newvol = 0, savecnt = 0, wantnext = 0, i; |
1227625a SP |
292 | union u_spcl tmpspcl; |
293 | # define tmpbuf tmpspcl.s_spcl | |
294 | char buf[TP_BSIZE]; | |
295 | ||
296 | if (nextvol == 1) { | |
297 | tapesread = 0; | |
298 | gettingfile = 0; | |
299 | } | |
300 | if (pipein) { | |
301 | if (nextvol != 1) | |
302 | panic("Changing volumes on pipe input?\n"); | |
303 | if (volno == 1) | |
304 | return; | |
305 | goto gethdr; | |
306 | } | |
307 | savecnt = blksread; | |
308 | again: | |
309 | if (pipein) | |
ddd2ef55 | 310 | exit(1); /* pipes do not get a second chance */ |
1227625a SP |
311 | if (command == 'R' || command == 'r' || curfile.action != SKIP) { |
312 | newvol = nextvol; | |
313 | wantnext = 1; | |
b45f51d6 | 314 | } else { |
1227625a SP |
315 | newvol = 0; |
316 | wantnext = 0; | |
317 | } | |
318 | while (newvol <= 0) { | |
319 | if (tapesread == 0) { | |
320 | fprintf(stderr, "%s%s%s%s%s", | |
321 | "You have not read any tapes yet.\n", | |
322 | "Unless you know which volume your", | |
323 | " file(s) are on you should start\n", | |
324 | "with the last volume and work", | |
325 | " towards the first.\n"); | |
326 | } else { | |
327 | fprintf(stderr, "You have read volumes"); | |
328 | strcpy(buf, ": "); | |
329 | for (i = 1; i < 32; i++) | |
330 | if (tapesread & (1 << i)) { | |
ddd2ef55 | 331 | fprintf(stderr, "%s%ld", buf, (long)i); |
1227625a SP |
332 | strcpy(buf, ", "); |
333 | } | |
334 | fprintf(stderr, "\n"); | |
335 | } | |
336 | do { | |
337 | fprintf(stderr, "Specify next volume #: "); | |
338 | (void) fflush(stderr); | |
339 | (void) fgets(buf, BUFSIZ, terminal); | |
340 | } while (!feof(terminal) && buf[0] == '\n'); | |
341 | if (feof(terminal)) | |
ddd2ef55 | 342 | exit(1); |
1227625a SP |
343 | newvol = atoi(buf); |
344 | if (newvol <= 0) { | |
345 | fprintf(stderr, | |
346 | "Volume numbers are positive numerics\n"); | |
347 | } | |
348 | } | |
349 | if (newvol == volno) { | |
350 | tapesread |= 1 << volno; | |
351 | return; | |
352 | } | |
353 | closemt(); | |
ddd2ef55 | 354 | fprintf(stderr, "Mount tape volume %ld\n", (long)newvol); |
1227625a SP |
355 | fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); |
356 | fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); | |
357 | (void) fflush(stderr); | |
358 | (void) fgets(buf, BUFSIZ, terminal); | |
359 | if (feof(terminal)) | |
ddd2ef55 | 360 | exit(1); |
1227625a SP |
361 | if (!strcmp(buf, "none\n")) { |
362 | terminateinput(); | |
363 | return; | |
364 | } | |
365 | if (buf[0] != '\n') { | |
366 | (void) strcpy(magtape, buf); | |
367 | magtape[strlen(magtape) - 1] = '\0'; | |
368 | } | |
369 | #ifdef RRESTORE | |
370 | if (host) | |
371 | mt = rmtopen(magtape, 0); | |
372 | else | |
373 | #endif | |
374 | mt = open(magtape, O_RDONLY, 0); | |
375 | ||
376 | if (mt == -1) { | |
377 | fprintf(stderr, "Cannot open %s\n", magtape); | |
378 | volno = -1; | |
379 | goto again; | |
380 | } | |
381 | gethdr: | |
382 | volno = newvol; | |
383 | setdumpnum(); | |
384 | FLUSHTAPEBUF(); | |
385 | if (gethead(&tmpbuf) == FAIL) { | |
ddd2ef55 | 386 | Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread); |
1227625a SP |
387 | fprintf(stderr, "tape is not dump tape\n"); |
388 | volno = 0; | |
389 | goto again; | |
390 | } | |
391 | if (tmpbuf.c_volume != volno) { | |
392 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); | |
393 | volno = 0; | |
394 | goto again; | |
395 | } | |
396 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { | |
397 | #ifdef __linux__ | |
398 | fprintf(stderr, "Wrong dump date\n\tgot: %s", | |
399 | ctime4(&tmpbuf.c_date)); | |
400 | fprintf(stderr, "\twanted: %s", ctime4(&dumpdate)); | |
401 | #else | |
402 | fprintf(stderr, "Wrong dump date\n\tgot: %s", | |
403 | ctime(&tmpbuf.c_date)); | |
404 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
405 | #endif | |
406 | volno = 0; | |
407 | goto again; | |
408 | } | |
409 | tapesread |= 1 << volno; | |
410 | blksread = savecnt; | |
411 | /* | |
412 | * If continuing from the previous volume, skip over any | |
413 | * blocks read already at the end of the previous volume. | |
414 | * | |
415 | * If coming to this volume at random, skip to the beginning | |
416 | * of the next record. | |
417 | */ | |
ddd2ef55 SP |
418 | Dprintf(stdout, "read %ld recs, tape starts with %ld\n", |
419 | tpblksread, (long)tmpbuf.c_firstrec); | |
1227625a SP |
420 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) { |
421 | if (!wantnext) { | |
422 | tpblksread = tmpbuf.c_firstrec; | |
423 | for (i = tmpbuf.c_count; i > 0; i--) | |
424 | readtape(buf); | |
425 | } else if (tmpbuf.c_firstrec > 0 && | |
426 | tmpbuf.c_firstrec < tpblksread - 1) { | |
427 | /* | |
428 | * -1 since we've read the volume header | |
429 | */ | |
430 | i = tpblksread - tmpbuf.c_firstrec - 1; | |
ddd2ef55 SP |
431 | Dprintf(stderr, "Skipping %ld duplicate record%s.\n", |
432 | (long)i, i > 1 ? "s" : ""); | |
1227625a SP |
433 | while (--i >= 0) |
434 | readtape(buf); | |
435 | } | |
436 | } | |
437 | if (curfile.action == USING) { | |
438 | if (volno == 1) | |
439 | panic("active file into volume 1\n"); | |
440 | return; | |
441 | } | |
442 | /* | |
443 | * Skip up to the beginning of the next record | |
444 | */ | |
445 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) | |
446 | for (i = tmpbuf.c_count; i > 0; i--) | |
447 | readtape(buf); | |
448 | (void) gethead(&spcl); | |
449 | findinode(&spcl); | |
450 | if (gettingfile) { | |
451 | gettingfile = 0; | |
ddd2ef55 | 452 | siglongjmp(restart, 1); |
1227625a SP |
453 | } |
454 | } | |
455 | ||
456 | /* | |
457 | * Handle unexpected EOF. | |
458 | */ | |
459 | static void | |
ddd2ef55 | 460 | terminateinput(void) |
1227625a SP |
461 | { |
462 | ||
463 | if (gettingfile && curfile.action == USING) { | |
464 | printf("Warning: %s %s\n", | |
465 | "End-of-input encountered while extracting", curfile.name); | |
466 | } | |
467 | curfile.name = "<name unknown>"; | |
468 | curfile.action = UNKNOWN; | |
469 | curfile.dip = NULL; | |
470 | curfile.ino = maxino; | |
471 | if (gettingfile) { | |
472 | gettingfile = 0; | |
ddd2ef55 | 473 | siglongjmp(restart, 1); |
1227625a SP |
474 | } |
475 | } | |
476 | ||
477 | /* | |
478 | * handle multiple dumps per tape by skipping forward to the | |
479 | * appropriate one. | |
480 | */ | |
481 | static void | |
ddd2ef55 | 482 | setdumpnum(void) |
1227625a SP |
483 | { |
484 | struct mtop tcom; | |
485 | ||
486 | if (dumpnum == 1 || volno != 1) | |
487 | return; | |
ddd2ef55 SP |
488 | if (pipein) |
489 | errx(1, "Cannot have multiple dumps on pipe input"); | |
1227625a SP |
490 | tcom.mt_op = MTFSF; |
491 | tcom.mt_count = dumpnum - 1; | |
492 | #ifdef RRESTORE | |
493 | if (host) | |
494 | rmtioctl(MTFSF, dumpnum - 1); | |
b45f51d6 | 495 | else |
1227625a SP |
496 | #endif |
497 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) | |
ddd2ef55 | 498 | warn("ioctl MTFSF"); |
1227625a SP |
499 | } |
500 | ||
501 | void | |
ddd2ef55 | 502 | printdumpinfo(void) |
1227625a SP |
503 | { |
504 | #ifdef __linux__ | |
505 | fprintf(stdout, "Dump date: %s", ctime4(&spcl.c_date)); | |
506 | fprintf(stdout, "Dumped from: %s", | |
507 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime4(&spcl.c_ddate)); | |
508 | #else | |
509 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
510 | fprintf(stdout, "Dumped from: %s", | |
511 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
512 | #endif | |
513 | if (spcl.c_host[0] == '\0') | |
514 | return; | |
515 | fprintf(stderr, "Level %d dump of %s on %s:%s\n", | |
516 | spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); | |
517 | fprintf(stderr, "Label: %s\n", spcl.c_label); | |
518 | } | |
519 | ||
520 | int | |
ddd2ef55 | 521 | extractfile(char *name) |
1227625a | 522 | { |
ddd2ef55 | 523 | unsigned int flags; |
1227625a SP |
524 | mode_t mode; |
525 | struct timeval timep[2]; | |
526 | struct entry *ep; | |
1227625a SP |
527 | |
528 | curfile.name = name; | |
529 | curfile.action = USING; | |
530 | #ifdef __linux__ | |
531 | timep[0].tv_sec = curfile.dip->di_atime.tv_sec; | |
532 | timep[0].tv_usec = curfile.dip->di_atime.tv_usec; | |
533 | timep[1].tv_sec = curfile.dip->di_mtime.tv_sec; | |
534 | timep[1].tv_usec = curfile.dip->di_mtime.tv_usec; | |
535 | #else /* __linux__ */ | |
536 | timep[0].tv_sec = curfile.dip->di_atime; | |
537 | timep[0].tv_usec = curfile.dip->di_atimensec / 1000; | |
538 | timep[1].tv_sec = curfile.dip->di_mtime; | |
539 | timep[1].tv_usec = curfile.dip->di_mtimensec / 1000; | |
540 | #endif /* __linux__ */ | |
541 | mode = curfile.dip->di_mode; | |
542 | flags = curfile.dip->di_flags; | |
543 | switch (mode & IFMT) { | |
544 | ||
545 | default: | |
546 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
547 | skipfile(); | |
548 | return (FAIL); | |
549 | ||
550 | case IFSOCK: | |
ddd2ef55 | 551 | Vprintf(stdout, "skipped socket %s\n", name); |
1227625a SP |
552 | skipfile(); |
553 | return (GOOD); | |
554 | ||
555 | case IFDIR: | |
556 | if (mflag) { | |
557 | ep = lookupname(name); | |
558 | if (ep == NULL || ep->e_flags & EXTRACT) | |
559 | panic("unextracted directory %s\n", name); | |
560 | skipfile(); | |
561 | return (GOOD); | |
562 | } | |
ddd2ef55 | 563 | Vprintf(stdout, "extract file %s\n", name); |
1227625a SP |
564 | return (genliteraldir(name, curfile.ino)); |
565 | ||
566 | case IFLNK: | |
ddd2ef55 SP |
567 | { uid_t luid = curfile.dip->di_uid; |
568 | gid_t lgid = curfile.dip->di_gid; | |
569 | ||
1227625a SP |
570 | lnkbuf[0] = '\0'; |
571 | pathlen = 0; | |
1227625a SP |
572 | getfile(xtrlnkfile, xtrlnkskip); |
573 | if (pathlen == 0) { | |
ddd2ef55 | 574 | Vprintf(stdout, |
1227625a SP |
575 | "%s: zero length symbolic link (ignored)\n", name); |
576 | return (GOOD); | |
577 | } | |
ddd2ef55 SP |
578 | if (linkit(lnkbuf, name, SYMLINK) == FAIL) |
579 | return (FAIL); | |
580 | (void) chown(name, luid, lgid); | |
581 | return (GOOD); | |
582 | } | |
1227625a | 583 | |
b45f51d6 | 584 | case IFIFO: |
ddd2ef55 | 585 | Vprintf(stdout, "extract fifo %s\n", name); |
1227625a SP |
586 | if (Nflag) { |
587 | skipfile(); | |
588 | return (GOOD); | |
589 | } | |
b45f51d6 SP |
590 | if (uflag && !Nflag) |
591 | (void)unlink(name); | |
592 | if (mkfifo(name, mode) < 0) { | |
ddd2ef55 | 593 | warn("%s: cannot create fifo", name); |
1227625a SP |
594 | skipfile(); |
595 | return (FAIL); | |
596 | } | |
597 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); | |
598 | (void) chmod(name, mode); | |
8d4197bb | 599 | if (flags) |
b45f51d6 | 600 | #ifdef __linux__ |
8d4197bb | 601 | (void) fsetflags(name, flags); |
1227625a | 602 | #else |
8d4197bb | 603 | (void) chflags(name, flags); |
1227625a SP |
604 | #endif |
605 | skipfile(); | |
606 | utimes(name, timep); | |
607 | return (GOOD); | |
608 | ||
b45f51d6 SP |
609 | case IFCHR: |
610 | case IFBLK: | |
ddd2ef55 | 611 | Vprintf(stdout, "extract special file %s\n", name); |
1227625a SP |
612 | if (Nflag) { |
613 | skipfile(); | |
614 | return (GOOD); | |
615 | } | |
b45f51d6 SP |
616 | if (uflag) |
617 | (void)unlink(name); | |
618 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
ddd2ef55 | 619 | warn("%s: cannot create special file", name); |
1227625a SP |
620 | skipfile(); |
621 | return (FAIL); | |
622 | } | |
623 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); | |
624 | (void) chmod(name, mode); | |
8d4197bb | 625 | if (flags) |
1227625a | 626 | #ifdef __linux__ |
8d4197bb SP |
627 | { |
628 | warn("%s: fsetflags called on a special file", name); | |
629 | (void) fsetflags(name, flags); | |
630 | } | |
1227625a | 631 | #else |
8d4197bb | 632 | (void) chflags(name, flags); |
1227625a SP |
633 | #endif |
634 | skipfile(); | |
635 | utimes(name, timep); | |
636 | return (GOOD); | |
637 | ||
638 | case IFREG: | |
ddd2ef55 | 639 | Vprintf(stdout, "extract file %s\n", name); |
1227625a SP |
640 | if (Nflag) { |
641 | skipfile(); | |
642 | return (GOOD); | |
643 | } | |
b45f51d6 SP |
644 | if (uflag) |
645 | (void)unlink(name); | |
1227625a SP |
646 | if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, |
647 | 0666)) < 0) { | |
ddd2ef55 | 648 | warn("%s: cannot create file", name); |
1227625a SP |
649 | skipfile(); |
650 | return (FAIL); | |
651 | } | |
652 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); | |
653 | (void) fchmod(ofile, mode); | |
8d4197bb | 654 | if (flags) |
1227625a | 655 | #ifdef __linux__ |
8d4197bb | 656 | (void) setflags(ofile, flags); |
1227625a | 657 | #else |
8d4197bb | 658 | (void) fchflags(ofile, flags); |
1227625a SP |
659 | #endif |
660 | getfile(xtrfile, xtrskip); | |
661 | (void) close(ofile); | |
662 | utimes(name, timep); | |
663 | return (GOOD); | |
664 | } | |
665 | /* NOTREACHED */ | |
666 | } | |
667 | ||
668 | /* | |
669 | * skip over bit maps on the tape | |
670 | */ | |
671 | void | |
ddd2ef55 | 672 | skipmaps(void) |
1227625a SP |
673 | { |
674 | ||
675 | while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI) | |
676 | skipfile(); | |
677 | } | |
678 | ||
679 | /* | |
680 | * skip over a file on the tape | |
681 | */ | |
682 | void | |
ddd2ef55 | 683 | skipfile(void) |
1227625a SP |
684 | { |
685 | ||
686 | curfile.action = SKIP; | |
687 | getfile(xtrnull, xtrnull); | |
688 | } | |
689 | ||
690 | /* | |
691 | * Extract a file from the tape. | |
692 | * When an allocated block is found it is passed to the fill function; | |
693 | * when an unallocated block (hole) is found, a zeroed buffer is passed | |
694 | * to the skip function. | |
695 | */ | |
696 | void | |
ddd2ef55 | 697 | getfile(void (*fill) __P((char *, size_t)), void (*skip) __P((char *, size_t))) |
1227625a SP |
698 | { |
699 | register int i; | |
ddd2ef55 SP |
700 | volatile int curblk = 0; |
701 | volatile quad_t size = spcl.c_dinode.di_size; | |
702 | volatile int last_write_was_hole = 0; | |
703 | quad_t origsize = size; | |
1227625a SP |
704 | static char clearedbuf[MAXBSIZE]; |
705 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
706 | char junk[TP_BSIZE]; | |
707 | ||
708 | if (spcl.c_type == TS_END) | |
709 | panic("ran off end of tape\n"); | |
710 | if (spcl.c_magic != NFS_MAGIC) | |
711 | panic("not at beginning of a file\n"); | |
712 | if (!gettingfile && setjmp(restart) != 0) | |
713 | return; | |
714 | gettingfile++; | |
715 | loop: | |
716 | for (i = 0; i < spcl.c_count; i++) { | |
b45f51d6 | 717 | if (readmapflag || spcl.c_addr[i]) { |
1227625a SP |
718 | readtape(&buf[curblk++][0]); |
719 | if (curblk == fssize / TP_BSIZE) { | |
ddd2ef55 | 720 | (*fill)((char *)buf, (size_t)(size > TP_BSIZE ? |
1227625a SP |
721 | fssize : (curblk - 1) * TP_BSIZE + size)); |
722 | curblk = 0; | |
723 | last_write_was_hole = 0; | |
724 | } | |
725 | } else { | |
726 | if (curblk > 0) { | |
ddd2ef55 | 727 | (*fill)((char *)buf, (size_t)(size > TP_BSIZE ? |
1227625a SP |
728 | curblk * TP_BSIZE : |
729 | (curblk - 1) * TP_BSIZE + size)); | |
730 | curblk = 0; | |
731 | } | |
732 | (*skip)(clearedbuf, (long)(size > TP_BSIZE ? | |
733 | TP_BSIZE : size)); | |
734 | last_write_was_hole = 1; | |
735 | } | |
736 | if ((size -= TP_BSIZE) <= 0) { | |
737 | for (i++; i < spcl.c_count; i++) | |
b45f51d6 | 738 | if (readmapflag || spcl.c_addr[i]) |
1227625a SP |
739 | readtape(junk); |
740 | break; | |
741 | } | |
742 | } | |
743 | if (gethead(&spcl) == GOOD && size > 0) { | |
744 | if (spcl.c_type == TS_ADDR) | |
745 | goto loop; | |
ddd2ef55 | 746 | Dprintf(stdout, |
b45f51d6 | 747 | "Missing address (header) block for %s at %ld blocks\n", |
ddd2ef55 | 748 | curfile.name, (long)blksread); |
1227625a SP |
749 | } |
750 | if (curblk > 0) { | |
ddd2ef55 | 751 | (*fill)((char *)buf, (size_t)(curblk * TP_BSIZE) + size); |
1227625a SP |
752 | last_write_was_hole = 0; |
753 | } | |
754 | if (last_write_was_hole) { | |
755 | ftruncate(ofile, origsize); | |
756 | } | |
757 | findinode(&spcl); | |
758 | gettingfile = 0; | |
759 | } | |
760 | ||
761 | /* | |
762 | * Write out the next block of a file. | |
763 | */ | |
764 | static void | |
ddd2ef55 | 765 | xtrfile(char *buf, size_t size) |
1227625a SP |
766 | { |
767 | ||
768 | if (Nflag) | |
769 | return; | |
ddd2ef55 SP |
770 | if (write(ofile, buf, (int) size) == -1) |
771 | err(1, "write error extracting inode %lu, name %s\nwrite", | |
772 | (unsigned long)curfile.ino, curfile.name); | |
1227625a SP |
773 | } |
774 | ||
775 | /* | |
776 | * Skip over a hole in a file. | |
777 | */ | |
778 | /* ARGSUSED */ | |
779 | static void | |
ddd2ef55 | 780 | xtrskip(char *buf, size_t size) |
1227625a SP |
781 | { |
782 | ||
ddd2ef55 SP |
783 | if (lseek(ofile, (off_t)size, SEEK_CUR) == -1) |
784 | err(1, "seek error extracting inode %lu, name %s\nlseek", | |
785 | (unsigned long)curfile.ino, curfile.name); | |
1227625a SP |
786 | } |
787 | ||
788 | /* | |
789 | * Collect the next block of a symbolic link. | |
790 | */ | |
791 | static void | |
ddd2ef55 | 792 | xtrlnkfile(char *buf, size_t size) |
1227625a SP |
793 | { |
794 | ||
795 | pathlen += size; | |
ddd2ef55 SP |
796 | if (pathlen > MAXPATHLEN) |
797 | errx(1, "symbolic link name: %s->%s%s; too long %d", | |
1227625a | 798 | curfile.name, lnkbuf, buf, pathlen); |
1227625a SP |
799 | (void) strcat(lnkbuf, buf); |
800 | } | |
801 | ||
802 | /* | |
803 | * Skip over a hole in a symbolic link (should never happen). | |
804 | */ | |
805 | /* ARGSUSED */ | |
806 | static void | |
ddd2ef55 | 807 | xtrlnkskip(char *buf, size_t size) |
1227625a SP |
808 | { |
809 | ||
ddd2ef55 | 810 | errx(1, "unallocated block in symbolic link %s", curfile.name); |
1227625a SP |
811 | } |
812 | ||
813 | /* | |
814 | * Collect the next block of a bit map. | |
815 | */ | |
816 | static void | |
ddd2ef55 | 817 | xtrmap(char *buf, size_t size) |
1227625a SP |
818 | { |
819 | ||
820 | memmove(map, buf, size); | |
821 | map += size; | |
822 | } | |
823 | ||
824 | /* | |
825 | * Skip over a hole in a bit map (should never happen). | |
826 | */ | |
827 | /* ARGSUSED */ | |
828 | static void | |
ddd2ef55 | 829 | xtrmapskip(char *buf, size_t size) |
1227625a SP |
830 | { |
831 | ||
832 | panic("hole in map\n"); | |
833 | map += size; | |
834 | } | |
835 | ||
836 | /* | |
837 | * Noop, when an extraction function is not needed. | |
838 | */ | |
839 | /* ARGSUSED */ | |
840 | void | |
ddd2ef55 | 841 | xtrnull(char *buf, size_t size) |
1227625a SP |
842 | { |
843 | ||
844 | return; | |
845 | } | |
846 | ||
ddd2ef55 | 847 | static int |
1227625a SP |
848 | do_cmpfiles(int fd_tape, int fd_disk, long size) |
849 | { | |
1227625a SP |
850 | static char buf_tape[BUFSIZ]; |
851 | static char buf_disk[BUFSIZ]; | |
ddd2ef55 SP |
852 | ssize_t n_tape; |
853 | ssize_t n_disk; | |
1227625a SP |
854 | |
855 | while (size > 0) { | |
ddd2ef55 | 856 | if ((n_tape = read(fd_tape, buf_tape, sizeof(buf_tape))) < 1) { |
1227625a SP |
857 | close(fd_tape), close(fd_disk); |
858 | panic("do_cmpfiles: unexpected EOF[1]"); | |
859 | } | |
ddd2ef55 | 860 | if ((n_disk = read(fd_disk, buf_disk, sizeof(buf_tape))) < 1) { |
1227625a SP |
861 | close(fd_tape), close(fd_disk); |
862 | panic("do_cmpfiles: unexpected EOF[2]"); | |
863 | } | |
864 | if (n_tape != n_disk) { | |
865 | close(fd_tape), close(fd_disk); | |
866 | panic("do_cmpfiles: sizes different!"); | |
867 | } | |
ddd2ef55 | 868 | if (memcmp(buf_tape, buf_disk, (size_t)n_tape) != 0) return (1); |
1227625a SP |
869 | size -= n_tape; |
870 | } | |
871 | return (0); | |
872 | } | |
873 | ||
874 | /* for debugging compare problems */ | |
875 | #undef COMPARE_FAIL_KEEP_FILE | |
876 | ||
ddd2ef55 | 877 | static |
1227625a SP |
878 | #ifdef COMPARE_FAIL_KEEP_FILE |
879 | /* return true if tapefile should be unlinked after compare */ | |
880 | int | |
881 | #else | |
882 | void | |
883 | #endif | |
884 | cmpfiles(char *tapefile, char *diskfile, struct stat *sbuf_disk) | |
885 | { | |
886 | struct stat sbuf_tape; | |
887 | int fd_tape, fd_disk; | |
888 | ||
889 | if (stat(tapefile, &sbuf_tape) != 0) { | |
890 | panic("Can't lstat tmp file %s: %s\n", tapefile, | |
891 | strerror(errno)); | |
892 | } | |
893 | ||
894 | if (sbuf_disk->st_size != sbuf_tape.st_size) { | |
895 | fprintf(stderr, | |
b45f51d6 | 896 | "%s: size changed from %ld to %ld.\n", |
ddd2ef55 | 897 | diskfile, (long)sbuf_tape.st_size, (long)sbuf_disk->st_size); |
1227625a SP |
898 | #ifdef COMPARE_FAIL_KEEP_FILE |
899 | return (0); | |
900 | #else | |
901 | return; | |
902 | #endif | |
903 | } | |
904 | ||
905 | if ((fd_tape = open(tapefile, O_RDONLY)) < 0) { | |
906 | panic("Can't open %s: %s\n", tapefile, strerror(errno)); | |
907 | } | |
908 | if ((fd_disk = open(diskfile, O_RDONLY)) < 0) { | |
909 | close(fd_tape); | |
910 | panic("Can't open %s: %s\n", diskfile, strerror(errno)); | |
911 | } | |
912 | ||
913 | if (do_cmpfiles(fd_tape, fd_disk, sbuf_tape.st_size)) { | |
914 | fprintf(stderr, "%s: tape and disk copies are different\n", | |
915 | diskfile); | |
916 | close(fd_tape); | |
917 | close(fd_disk); | |
918 | #ifdef COMPARE_FAIL_KEEP_FILE | |
919 | /* rename the file to live in /tmp */ | |
920 | /* rename `tapefile' to /tmp/<basename of diskfile> */ | |
921 | { | |
922 | char *p = strrchr(diskfile, '/'); | |
923 | char newname[MAXPATHLEN]; | |
924 | if (!p) { | |
925 | panic("can't find / in %s\n", diskfile); | |
926 | } | |
ddd2ef55 | 927 | snprintf(newname, sizeof(newname), "%s/debug/%s", tmpdir, p + 1); |
1227625a SP |
928 | if (rename(tapefile, newname)) { |
929 | panic("rename from %s to %s failed: %s\n", | |
930 | tapefile, newname, | |
931 | strerror(errno)); | |
932 | } else { | |
933 | fprintf(stderr, "*** %s saved to %s\n", | |
934 | tapefile, newname); | |
935 | } | |
936 | } | |
937 | ||
938 | /* don't unlink the file (it's not there anymore */ | |
939 | /* anyway) */ | |
940 | return (0); | |
941 | #else | |
942 | return; | |
943 | #endif | |
944 | } | |
945 | close(fd_tape); | |
946 | close(fd_disk); | |
947 | #ifdef COMPARE_FAIL_KEEP_FILE | |
948 | return (1); | |
949 | #endif | |
950 | } | |
951 | ||
ddd2ef55 | 952 | static char tmpfilename[MAXPATHLEN]; |
1227625a SP |
953 | |
954 | void | |
ddd2ef55 | 955 | comparefile(char *name) |
1227625a SP |
956 | { |
957 | static char *tmpfile = NULL; | |
958 | int mode; | |
959 | struct stat sb, stemp; | |
960 | int r; | |
961 | ||
962 | if ((r = lstat(name, &sb)) != 0) { | |
ddd2ef55 | 963 | warn("%s: does not exist (%d)", name, r); |
1227625a SP |
964 | skipfile(); |
965 | return; | |
966 | } | |
967 | ||
968 | curfile.name = name; | |
b45f51d6 | 969 | curfile.action = USING; |
1227625a SP |
970 | mode = curfile.dip->di_mode; |
971 | ||
ddd2ef55 SP |
972 | Vprintf(stdout, "comparing %s (size: %ld, mode: 0%o)\n", name, |
973 | (long)sb.st_size, mode); | |
1227625a SP |
974 | |
975 | if (sb.st_mode != mode) { | |
976 | fprintf(stderr, "%s: mode changed from 0%o to 0%o.\n", | |
977 | name, mode & 07777, sb.st_mode & 07777); | |
978 | } | |
979 | switch (mode & IFMT) { | |
980 | default: | |
981 | skipfile(); | |
982 | return; | |
983 | ||
984 | case IFSOCK: | |
985 | skipfile(); | |
986 | return; | |
987 | ||
988 | case IFDIR: | |
989 | skipfile(); | |
990 | return; | |
991 | ||
992 | case IFLNK: { | |
993 | char lbuf[MAXPATHLEN + 1]; | |
994 | int lsize; | |
995 | ||
996 | if (!(sb.st_mode & S_IFLNK)) { | |
997 | fprintf(stderr, "%s: is no longer a symbolic link\n", | |
998 | name); | |
999 | return; | |
1000 | } | |
1001 | lnkbuf[0] = '\0'; | |
1002 | pathlen = 0; | |
1003 | getfile(xtrlnkfile, xtrlnkskip); | |
1004 | if (pathlen == 0) { | |
1005 | fprintf(stderr, | |
1006 | "%s: zero length symbolic link (ignored)\n", | |
1007 | name); | |
1008 | return; | |
1009 | } | |
1010 | if ((lsize = readlink(name, lbuf, MAXPATHLEN)) < 0) { | |
1011 | panic("readlink of %s failed: %s", name, | |
1012 | strerror(errno)); | |
1013 | } | |
1014 | lbuf[lsize] = 0; | |
1015 | if (strcmp(lbuf, lnkbuf) != 0) { | |
1016 | fprintf(stderr, | |
1017 | "%s: symbolic link changed from %s to %s.\n", | |
1018 | name, lnkbuf, lbuf); | |
1019 | return; | |
1020 | } | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | case IFCHR: | |
1025 | case IFBLK: | |
1026 | if (!(sb.st_mode & (S_IFCHR|S_IFBLK))) { | |
1027 | fprintf(stderr, "%s: no longer a special file\n", | |
1028 | name); | |
1029 | skipfile(); | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | if (sb.st_rdev != (int)curfile.dip->di_rdev) { | |
1034 | fprintf(stderr, | |
1035 | "%s: device changed from %d,%d to %d,%d.\n", | |
1036 | name, | |
ddd2ef55 SP |
1037 | ((int)curfile.dip->di_rdev >> 8) & 0xff, |
1038 | (int)curfile.dip->di_rdev & 0xff, | |
1039 | ((int)sb.st_rdev >> 8) & 0xff, | |
1040 | (int)sb.st_rdev & 0xff); | |
1227625a SP |
1041 | } |
1042 | skipfile(); | |
1043 | return; | |
1044 | ||
1045 | case IFREG: | |
1046 | if (tmpfile == NULL) { | |
1047 | /* argument to mktemp() must not be in RO space: */ | |
ddd2ef55 | 1048 | snprintf(tmpfilename, sizeof(tmpfilename), "%s/restoreCXXXXXX", tmpdir); |
1227625a SP |
1049 | tmpfile = mktemp(&tmpfilename[0]); |
1050 | } | |
1051 | if ((stat(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) { | |
1052 | panic("cannot delete tmp file %s: %s\n", | |
1053 | tmpfile, strerror(errno)); | |
1054 | } | |
1055 | if ((ofile = creat(tmpfile, 0600)) < 0) { | |
1056 | panic("cannot create file temp file %s: %s\n", | |
1057 | name, strerror(errno)); | |
1058 | } | |
1059 | getfile(xtrfile, xtrskip); | |
1060 | (void) close(ofile); | |
1061 | #ifdef COMPARE_FAIL_KEEP_FILE | |
1062 | if (cmpfiles(tmpfile, name, &sb)) | |
1063 | unlink(tmpfile); | |
1064 | #else | |
1065 | cmpfiles(tmpfile, name, &sb); | |
1066 | unlink(tmpfile); | |
1067 | #endif | |
1068 | return; | |
1069 | } | |
1070 | /* NOTREACHED */ | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * Read TP_BSIZE blocks from the input. | |
1075 | * Handle read errors, and end of media. | |
1076 | */ | |
1077 | static void | |
ddd2ef55 | 1078 | readtape(char *buf) |
1227625a | 1079 | { |
ddd2ef55 | 1080 | ssize_t rd, newvol, i; |
1227625a SP |
1081 | int cnt, seek_failed; |
1082 | ||
1083 | if (blkcnt < numtrec) { | |
ddd2ef55 | 1084 | memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], TP_BSIZE); |
1227625a SP |
1085 | blksread++; |
1086 | tpblksread++; | |
1087 | return; | |
1088 | } | |
1089 | for (i = 0; i < ntrec; i++) | |
1090 | ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; | |
1091 | if (numtrec == 0) | |
1092 | numtrec = ntrec; | |
1093 | cnt = ntrec * TP_BSIZE; | |
1094 | rd = 0; | |
1095 | getmore: | |
1096 | #ifdef RRESTORE | |
1097 | if (host) | |
1098 | i = rmtread(&tapebuf[rd], cnt); | |
1099 | else | |
1100 | #endif | |
1101 | i = read(mt, &tapebuf[rd], cnt); | |
1102 | /* | |
1103 | * Check for mid-tape short read error. | |
1104 | * If found, skip rest of buffer and start with the next. | |
1105 | */ | |
1106 | if (!pipein && numtrec < ntrec && i > 0) { | |
ddd2ef55 | 1107 | Dprintf(stdout, "mid-media short read error.\n"); |
1227625a SP |
1108 | numtrec = ntrec; |
1109 | } | |
1110 | /* | |
1111 | * Handle partial block read. | |
1112 | */ | |
1113 | if (pipein && i == 0 && rd > 0) | |
1114 | i = rd; | |
1115 | else if (i > 0 && i != ntrec * TP_BSIZE) { | |
1116 | if (pipein) { | |
1117 | rd += i; | |
1118 | cnt -= i; | |
1119 | if (cnt > 0) | |
1120 | goto getmore; | |
1121 | i = rd; | |
1122 | } else { | |
1123 | /* | |
1124 | * Short read. Process the blocks read. | |
1125 | */ | |
1126 | if (i % TP_BSIZE != 0) | |
ddd2ef55 | 1127 | Vprintf(stdout, |
b45f51d6 | 1128 | "partial block read: %ld should be %ld\n", |
ddd2ef55 | 1129 | (long)i, ntrec * TP_BSIZE); |
1227625a SP |
1130 | numtrec = i / TP_BSIZE; |
1131 | } | |
1132 | } | |
1133 | /* | |
1134 | * Handle read error. | |
1135 | */ | |
1136 | if (i < 0) { | |
1137 | fprintf(stderr, "Tape read error while "); | |
1138 | switch (curfile.action) { | |
1139 | default: | |
1140 | fprintf(stderr, "trying to set up tape\n"); | |
1141 | break; | |
1142 | case UNKNOWN: | |
1143 | fprintf(stderr, "trying to resynchronize\n"); | |
1144 | break; | |
1145 | case USING: | |
1146 | fprintf(stderr, "restoring %s\n", curfile.name); | |
1147 | break; | |
1148 | case SKIP: | |
ddd2ef55 SP |
1149 | fprintf(stderr, "skipping over inode %lu\n", |
1150 | (unsigned long)curfile.ino); | |
1227625a SP |
1151 | break; |
1152 | } | |
1153 | if (!yflag && !reply("continue")) | |
ddd2ef55 | 1154 | exit(1); |
1227625a | 1155 | i = ntrec * TP_BSIZE; |
ddd2ef55 | 1156 | memset(tapebuf, 0, (size_t)i); |
1227625a SP |
1157 | #ifdef RRESTORE |
1158 | if (host) | |
1159 | seek_failed = (rmtseek(i, 1) < 0); | |
1160 | else | |
1161 | #endif | |
1162 | seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); | |
1163 | ||
ddd2ef55 SP |
1164 | if (seek_failed) |
1165 | err(1, "continuation failed"); | |
1227625a SP |
1166 | } |
1167 | /* | |
1168 | * Handle end of tape. | |
1169 | */ | |
1170 | if (i == 0) { | |
ddd2ef55 | 1171 | Vprintf(stdout, "End-of-tape encountered\n"); |
1227625a SP |
1172 | if (!pipein) { |
1173 | newvol = volno + 1; | |
1174 | volno = 0; | |
1175 | numtrec = 0; | |
1176 | getvol(newvol); | |
1177 | readtape(buf); | |
1178 | return; | |
1179 | } | |
1180 | if (rd % TP_BSIZE != 0) | |
1181 | panic("partial block read: %d should be %d\n", | |
1182 | rd, ntrec * TP_BSIZE); | |
1183 | terminateinput(); | |
ddd2ef55 | 1184 | memmove(&tapebuf[rd], &endoftapemark, TP_BSIZE); |
1227625a SP |
1185 | } |
1186 | blkcnt = 0; | |
ddd2ef55 | 1187 | memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], TP_BSIZE); |
1227625a SP |
1188 | blksread++; |
1189 | tpblksread++; | |
1190 | } | |
1191 | ||
1192 | static void | |
ddd2ef55 | 1193 | findtapeblksize(void) |
1227625a SP |
1194 | { |
1195 | register long i; | |
1196 | ||
1197 | for (i = 0; i < ntrec; i++) | |
1198 | ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; | |
1199 | blkcnt = 0; | |
1200 | #ifdef RRESTORE | |
1201 | if (host) | |
ddd2ef55 | 1202 | i = rmtread(tapebuf, (size_t)(ntrec * TP_BSIZE)); |
1227625a SP |
1203 | else |
1204 | #endif | |
ddd2ef55 | 1205 | i = read(mt, tapebuf, (size_t)(ntrec * TP_BSIZE)); |
1227625a | 1206 | |
ddd2ef55 SP |
1207 | if (i <= 0) |
1208 | err(1, "tape read error"); | |
1209 | if (i % TP_BSIZE != 0) | |
1210 | errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)", | |
1211 | (long)i, TP_BSIZE); | |
1227625a SP |
1212 | ntrec = i / TP_BSIZE; |
1213 | numtrec = ntrec; | |
ddd2ef55 | 1214 | Vprintf(stdout, "Tape block size is %ld\n", ntrec); |
1227625a SP |
1215 | } |
1216 | ||
1217 | void | |
ddd2ef55 | 1218 | closemt(void) |
1227625a SP |
1219 | { |
1220 | ||
1221 | if (mt < 0) | |
1222 | return; | |
1223 | #ifdef RRESTORE | |
1224 | if (host) | |
1225 | rmtclose(); | |
1226 | else | |
1227 | #endif | |
1228 | (void) close(mt); | |
1229 | } | |
1230 | ||
1231 | /* | |
1232 | * Read the next block from the tape. | |
1233 | * Check to see if it is one of several vintage headers. | |
1234 | * If it is an old style header, convert it to a new style header. | |
1235 | * If it is not any valid header, return an error. | |
1236 | */ | |
1237 | static int | |
ddd2ef55 | 1238 | gethead(struct s_spcl *buf) |
1227625a | 1239 | { |
ddd2ef55 | 1240 | int32_t i; |
1227625a SP |
1241 | union { |
1242 | quad_t qval; | |
b45f51d6 | 1243 | int32_t val[2]; |
1227625a SP |
1244 | } qcvt; |
1245 | union u_ospcl { | |
1246 | char dummy[TP_BSIZE]; | |
1247 | struct s_ospcl { | |
b45f51d6 SP |
1248 | int32_t c_type; |
1249 | int32_t c_date; | |
1250 | int32_t c_ddate; | |
1251 | int32_t c_volume; | |
1252 | int32_t c_tapea; | |
ddd2ef55 | 1253 | u_int16_t c_inumber; |
b45f51d6 SP |
1254 | int32_t c_magic; |
1255 | int32_t c_checksum; | |
1227625a | 1256 | struct odinode { |
ddd2ef55 SP |
1257 | u_int16_t odi_mode; |
1258 | u_int16_t odi_nlink; | |
1259 | u_int16_t odi_uid; | |
1260 | u_int16_t odi_gid; | |
b45f51d6 SP |
1261 | int32_t odi_size; |
1262 | int32_t odi_rdev; | |
1227625a | 1263 | char odi_addr[36]; |
b45f51d6 SP |
1264 | int32_t odi_atime; |
1265 | int32_t odi_mtime; | |
1266 | int32_t odi_ctime; | |
1227625a | 1267 | } c_dinode; |
b45f51d6 | 1268 | int32_t c_count; |
1227625a SP |
1269 | char c_addr[256]; |
1270 | } s_ospcl; | |
1271 | } u_ospcl; | |
1272 | ||
1273 | if (!cvtflag) { | |
1274 | readtape((char *)buf); | |
1275 | if (buf->c_magic != NFS_MAGIC) { | |
ddd2ef55 | 1276 | if (swabi(buf->c_magic) != NFS_MAGIC) |
1227625a SP |
1277 | return (FAIL); |
1278 | if (!Bcvt) { | |
ddd2ef55 | 1279 | Vprintf(stdout, "Note: Doing Byte swapping\n"); |
1227625a SP |
1280 | Bcvt = 1; |
1281 | } | |
1282 | } | |
1283 | if (checksum((int *)buf) == FAIL) | |
1284 | return (FAIL); | |
ddd2ef55 SP |
1285 | if (Bcvt) |
1286 | swabst((u_char *)"8i4s31i528bi192b2i", (u_char *)buf); | |
1227625a SP |
1287 | goto good; |
1288 | } | |
1289 | readtape((char *)(&u_ospcl.s_ospcl)); | |
ddd2ef55 | 1290 | memset((char *)buf, 0, (long)TP_BSIZE); |
1227625a SP |
1291 | buf->c_type = u_ospcl.s_ospcl.c_type; |
1292 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
1293 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
1294 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
1295 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
1296 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
1297 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
1298 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
1299 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
1300 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
1301 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
1302 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
1303 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
1304 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
1305 | #ifdef __linux__ | |
1306 | buf->c_dinode.di_atime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
1307 | buf->c_dinode.di_mtime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
1308 | buf->c_dinode.di_ctime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
1309 | #else /* __linux__ */ | |
1310 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
1311 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
1312 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
1313 | #endif /* __linux__ */ | |
1314 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
1315 | memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256); | |
1316 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || | |
1317 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) | |
1318 | return(FAIL); | |
1319 | buf->c_magic = NFS_MAGIC; | |
1320 | ||
1321 | good: | |
1322 | if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) && | |
1323 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) { | |
1324 | qcvt.qval = buf->c_dinode.di_size; | |
1325 | if (qcvt.val[0] || qcvt.val[1]) { | |
1326 | printf("Note: Doing Quad swapping\n"); | |
1327 | Qcvt = 1; | |
1328 | } | |
1329 | } | |
1330 | if (Qcvt) { | |
1331 | qcvt.qval = buf->c_dinode.di_size; | |
1332 | i = qcvt.val[1]; | |
1333 | qcvt.val[1] = qcvt.val[0]; | |
1334 | qcvt.val[0] = i; | |
1335 | buf->c_dinode.di_size = qcvt.qval; | |
1336 | } | |
b45f51d6 | 1337 | readmapflag = 0; |
1227625a SP |
1338 | |
1339 | switch (buf->c_type) { | |
1340 | ||
1341 | case TS_CLRI: | |
1342 | case TS_BITS: | |
1343 | /* | |
1344 | * Have to patch up missing information in bit map headers | |
1345 | */ | |
1346 | buf->c_inumber = 0; | |
1347 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
b45f51d6 SP |
1348 | if (buf->c_count > TP_NINDIR) |
1349 | readmapflag = 1; | |
1350 | else | |
1351 | for (i = 0; i < buf->c_count; i++) | |
1352 | buf->c_addr[i]++; | |
1227625a SP |
1353 | break; |
1354 | ||
1355 | case TS_TAPE: | |
1356 | if ((buf->c_flags & DR_NEWINODEFMT) == 0) | |
1357 | oldinofmt = 1; | |
1358 | /* fall through */ | |
1359 | case TS_END: | |
1360 | buf->c_inumber = 0; | |
1361 | break; | |
1362 | ||
1363 | case TS_INODE: | |
1364 | case TS_ADDR: | |
1365 | break; | |
1366 | ||
1367 | default: | |
1368 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
1369 | break; | |
1370 | } | |
1371 | /* | |
b45f51d6 | 1372 | * If we are restoring a filesystem with old format inodes, |
1227625a SP |
1373 | * copy the uid/gid to the new location. |
1374 | */ | |
1375 | if (oldinofmt) { | |
1376 | buf->c_dinode.di_uid = buf->c_dinode.di_ouid; | |
1377 | buf->c_dinode.di_gid = buf->c_dinode.di_ogid; | |
1378 | } | |
1379 | if (dflag) | |
1380 | accthdr(buf); | |
1381 | return(GOOD); | |
1382 | } | |
1383 | ||
1384 | /* | |
1385 | * Check that a header is where it belongs and predict the next header | |
1386 | */ | |
1387 | static void | |
ddd2ef55 | 1388 | accthdr(struct s_spcl *header) |
1227625a SP |
1389 | { |
1390 | static ino_t previno = 0x7fffffff; | |
1391 | static int prevtype; | |
1392 | static long predict; | |
1393 | long blks, i; | |
1394 | ||
1395 | if (header->c_type == TS_TAPE) { | |
1396 | fprintf(stderr, "Volume header (%s inode format) ", | |
1397 | oldinofmt ? "old" : "new"); | |
1398 | if (header->c_firstrec) | |
1399 | fprintf(stderr, "begins with record %d", | |
1400 | header->c_firstrec); | |
1401 | fprintf(stderr, "\n"); | |
1402 | previno = 0x7fffffff; | |
1403 | return; | |
1404 | } | |
1405 | if (previno == 0x7fffffff) | |
1406 | goto newcalc; | |
1407 | switch (prevtype) { | |
1408 | case TS_BITS: | |
1409 | fprintf(stderr, "Dumped inodes map header"); | |
1410 | break; | |
1411 | case TS_CLRI: | |
1412 | fprintf(stderr, "Used inodes map header"); | |
1413 | break; | |
1414 | case TS_INODE: | |
ddd2ef55 | 1415 | fprintf(stderr, "File header, ino %lu", (unsigned long)previno); |
1227625a SP |
1416 | break; |
1417 | case TS_ADDR: | |
b45f51d6 | 1418 | fprintf(stderr, "File continuation header, ino %ld", previno); |
1227625a SP |
1419 | break; |
1420 | case TS_END: | |
1421 | fprintf(stderr, "End of tape header"); | |
1422 | break; | |
1423 | } | |
1424 | if (predict != blksread - 1) | |
b45f51d6 | 1425 | fprintf(stderr, "; predicted %ld blocks, got %ld blocks", |
1227625a SP |
1426 | predict, blksread - 1); |
1427 | fprintf(stderr, "\n"); | |
1428 | newcalc: | |
1429 | blks = 0; | |
1430 | if (header->c_type != TS_END) | |
1431 | for (i = 0; i < header->c_count; i++) | |
b45f51d6 | 1432 | if (readmapflag || header->c_addr[i] != 0) |
1227625a SP |
1433 | blks++; |
1434 | predict = blks; | |
1435 | blksread = 0; | |
1436 | prevtype = header->c_type; | |
1437 | previno = header->c_inumber; | |
1438 | } | |
1439 | ||
1440 | /* | |
1441 | * Find an inode header. | |
1442 | * Complain if had to skip, and complain is set. | |
1443 | */ | |
1444 | static void | |
ddd2ef55 | 1445 | findinode(struct s_spcl *header) |
1227625a SP |
1446 | { |
1447 | static long skipcnt = 0; | |
1448 | long i; | |
1449 | char buf[TP_BSIZE]; | |
1450 | ||
1451 | curfile.name = "<name unknown>"; | |
1452 | curfile.action = UNKNOWN; | |
1453 | curfile.dip = NULL; | |
1454 | curfile.ino = 0; | |
1455 | do { | |
1456 | if (header->c_magic != NFS_MAGIC) { | |
1457 | skipcnt++; | |
1458 | while (gethead(header) == FAIL || | |
1459 | header->c_date != dumpdate) | |
1460 | skipcnt++; | |
1461 | } | |
1462 | switch (header->c_type) { | |
1463 | ||
1464 | case TS_ADDR: | |
1465 | /* | |
1466 | * Skip up to the beginning of the next record | |
1467 | */ | |
1468 | for (i = 0; i < header->c_count; i++) | |
1469 | if (header->c_addr[i]) | |
1470 | readtape(buf); | |
1471 | while (gethead(header) == FAIL || | |
1472 | header->c_date != dumpdate) | |
1473 | skipcnt++; | |
1474 | break; | |
1475 | ||
1476 | case TS_INODE: | |
1477 | curfile.dip = &header->c_dinode; | |
1478 | curfile.ino = header->c_inumber; | |
1479 | break; | |
1480 | ||
1481 | case TS_END: | |
1482 | curfile.ino = maxino; | |
1483 | break; | |
1484 | ||
1485 | case TS_CLRI: | |
1486 | curfile.name = "<file removal list>"; | |
1487 | break; | |
1488 | ||
1489 | case TS_BITS: | |
1490 | curfile.name = "<file dump list>"; | |
1491 | break; | |
1492 | ||
1493 | case TS_TAPE: | |
1494 | panic("unexpected tape header\n"); | |
1495 | /* NOTREACHED */ | |
1496 | ||
1497 | default: | |
1498 | panic("unknown tape header type %d\n", spcl.c_type); | |
1499 | /* NOTREACHED */ | |
1500 | ||
1501 | } | |
1502 | } while (header->c_type == TS_ADDR); | |
1503 | if (skipcnt > 0) | |
b45f51d6 SP |
1504 | fprintf(stderr, "resync restore, skipped %ld blocks\n", |
1505 | skipcnt); | |
1227625a SP |
1506 | skipcnt = 0; |
1507 | } | |
1508 | ||
1509 | static int | |
ddd2ef55 | 1510 | checksum(int *buf) |
1227625a SP |
1511 | { |
1512 | register int i, j; | |
1513 | ||
1514 | j = sizeof(union u_spcl) / sizeof(int); | |
1515 | i = 0; | |
1516 | if(!Bcvt) { | |
1517 | do | |
1518 | i += *buf++; | |
1519 | while (--j); | |
1520 | } else { | |
1521 | /* What happens if we want to read restore tapes | |
1522 | for a 16bit int machine??? */ | |
b45f51d6 | 1523 | do |
ddd2ef55 | 1524 | i += swabi(*buf++); |
1227625a SP |
1525 | while (--j); |
1526 | } | |
b45f51d6 | 1527 | |
1227625a | 1528 | if (i != CHECKSUM) { |
ddd2ef55 SP |
1529 | fprintf(stderr, "Checksum error %o, inode %lu file %s\n", i, |
1530 | (unsigned long)curfile.ino, curfile.name); | |
1227625a SP |
1531 | return(FAIL); |
1532 | } | |
1533 | return(GOOD); | |
1534 | } | |
1535 | ||
1536 | #ifdef RRESTORE | |
ddd2ef55 | 1537 | #ifdef __STDC__ |
1227625a SP |
1538 | #include <stdarg.h> |
1539 | #else | |
1540 | #include <varargs.h> | |
1541 | #endif | |
1542 | ||
1543 | void | |
ddd2ef55 | 1544 | #ifdef __STDC__ |
1227625a SP |
1545 | msg(const char *fmt, ...) |
1546 | #else | |
1547 | msg(fmt, va_alist) | |
1548 | char *fmt; | |
1549 | va_dcl | |
1550 | #endif | |
1551 | { | |
1552 | va_list ap; | |
ddd2ef55 | 1553 | #ifdef __STDC__ |
1227625a SP |
1554 | va_start(ap, fmt); |
1555 | #else | |
1556 | va_start(ap); | |
1557 | #endif | |
1558 | (void)vfprintf(stderr, fmt, ap); | |
1559 | va_end(ap); | |
1560 | } | |
1561 | #endif /* RRESTORE */ | |
1562 | ||
1563 | static u_char * | |
ddd2ef55 | 1564 | swab16(u_char *sp, int n) |
1227625a SP |
1565 | { |
1566 | char c; | |
1567 | ||
1568 | while (--n >= 0) { | |
1569 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1570 | sp += 2; | |
1571 | } | |
1572 | return (sp); | |
1573 | } | |
1574 | ||
1575 | static u_char * | |
ddd2ef55 | 1576 | swab32(u_char *sp, int n) |
1227625a SP |
1577 | { |
1578 | char c; | |
1579 | ||
1580 | while (--n >= 0) { | |
1581 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
ddd2ef55 | 1582 | c = sp[1]; sp[1] = sp[2]; sp[2] = c; |
1227625a SP |
1583 | sp += 4; |
1584 | } | |
1585 | return (sp); | |
1586 | } | |
1587 | ||
ddd2ef55 SP |
1588 | static u_char * |
1589 | swab64(u_char *sp, int n) | |
1590 | { | |
1591 | char c; | |
1592 | ||
1593 | while (--n >= 0) { | |
1594 | c = sp[0]; sp[0] = sp[7]; sp[7] = c; | |
1595 | c = sp[1]; sp[1] = sp[6]; sp[6] = c; | |
1596 | c = sp[2]; sp[2] = sp[5]; sp[5] = c; | |
1597 | c = sp[3]; sp[3] = sp[4]; sp[4] = c; | |
1598 | sp += 8; | |
1599 | } | |
1600 | return (sp); | |
1601 | } | |
1602 | ||
1227625a | 1603 | void |
ddd2ef55 | 1604 | swabst(u_char *cp, u_char *sp) |
1227625a SP |
1605 | { |
1606 | int n = 0; | |
1607 | ||
1608 | while (*cp) { | |
1609 | switch (*cp) { | |
1610 | case '0': case '1': case '2': case '3': case '4': | |
1611 | case '5': case '6': case '7': case '8': case '9': | |
1612 | n = (n * 10) + (*cp++ - '0'); | |
1613 | continue; | |
b45f51d6 | 1614 | |
1227625a SP |
1615 | case 's': case 'w': case 'h': |
1616 | if (n == 0) | |
1617 | n = 1; | |
ddd2ef55 SP |
1618 | sp = swab16(sp, n); |
1619 | break; | |
1620 | ||
1621 | case 'i': | |
1622 | if (n == 0) | |
1623 | n = 1; | |
1624 | sp = swab32(sp, n); | |
1227625a SP |
1625 | break; |
1626 | ||
1627 | case 'l': | |
1628 | if (n == 0) | |
1629 | n = 1; | |
ddd2ef55 | 1630 | sp = swab64(sp, n); |
1227625a SP |
1631 | break; |
1632 | ||
1633 | default: /* Any other character, like 'b' counts as byte. */ | |
1634 | if (n == 0) | |
1635 | n = 1; | |
1636 | sp += n; | |
1637 | break; | |
1638 | } | |
1639 | cp++; | |
1640 | n = 0; | |
1641 | } | |
1642 | } | |
1643 | ||
ddd2ef55 SP |
1644 | static u_int |
1645 | swabi(u_int x) | |
1646 | { | |
1647 | swabst((u_char *)"i", (u_char *)&x); | |
1648 | return (x); | |
1649 | } | |
1650 | ||
1227625a | 1651 | static u_long |
ddd2ef55 | 1652 | swabl(u_long x) |
1227625a SP |
1653 | { |
1654 | swabst((u_char *)"l", (u_char *)&x); | |
1655 | return (x); | |
1656 | } |