]>
Commit | Line | Data |
---|---|---|
2bd0ea18 | 1 | /* |
cc08d43e | 2 | * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. |
2bd0ea18 NS |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include <libxfs.h> | |
34 | #include <ctype.h> | |
35 | #include <time.h> | |
36 | #include "bit.h" | |
37 | #include "block.h" | |
38 | #include "command.h" | |
39 | #include "data.h" | |
40 | #include "type.h" | |
41 | #include "faddr.h" | |
42 | #include "fprint.h" | |
43 | #include "field.h" | |
44 | #include "flist.h" | |
45 | #include "io.h" | |
46 | #include "output.h" | |
47 | #include "print.h" | |
48 | #include "write.h" | |
49 | #include "malloc.h" | |
50 | ||
51 | static int write_f(int argc, char **argv); | |
52 | static void write_help(void); | |
53 | ||
54 | static const cmdinfo_t write_cmd = | |
55 | { "write", NULL, write_f, 0, -1, 0, "[field or value]...", | |
56 | "write value to disk", write_help }; | |
57 | ||
58 | void | |
59 | write_init(void) | |
60 | { | |
61 | if (!flag_expert_mode) | |
62 | return; | |
63 | ||
64 | add_command(&write_cmd); | |
65 | srand48(clock()); | |
66 | } | |
67 | ||
68 | static void | |
69 | write_help(void) | |
70 | { | |
71 | dbprintf( | |
72 | "\n" | |
73 | " The 'write' command takes on different personalities depending on the\n" | |
74 | " type of object being worked with.\n\n" | |
75 | " Write has 3 modes:\n" | |
76 | " 'struct mode' - is active anytime you're looking at a filesystem object\n" | |
77 | " which contains individual fields (ex: an inode).\n" | |
78 | " 'data mode' - is active anytime you set a disk address directly or set\n" | |
79 | " the type to 'data'.\n" | |
80 | " 'string mode' - only used for writing symlink blocks.\n" | |
81 | "\n" | |
82 | " Examples:\n" | |
83 | " Struct mode: 'write core.uid 23' - set an inode uid field to 23.\n" | |
84 | " 'write fname \"hello\\000\"' - write superblock fname.\n" | |
85 | " (note: in struct mode strings are not null terminated)\n" | |
86 | " 'write fname #6669736800' - write superblock fname with hex.\n" | |
87 | " 'write uuid 00112233-4455-6677-8899-aabbccddeeff'\n" | |
88 | " - write superblock uuid.\n" | |
89 | " Data mode: 'write fill 0xff' - fill the entire block with 0xff's\n" | |
90 | " 'write lshift 3' - shift the block 3 bytes to the left\n" | |
91 | " 'write sequence 1 5' - write a cycle of number [1-5] through\n" | |
92 | " the entire block.\n" | |
93 | " String mode: 'write \"This_is_a_filename\" - write null terminated string.\n" | |
94 | "\n" | |
95 | " In data mode type 'write' by itself for a list of specific commands.\n\n" | |
96 | ); | |
97 | ||
98 | } | |
99 | ||
100 | static int | |
101 | write_f( | |
102 | int argc, | |
103 | char **argv) | |
104 | { | |
105 | pfunc_t pf; | |
106 | extern char *progname; | |
107 | ||
108 | if (flag_readonly) { | |
109 | dbprintf("%s started in read only mode, writing disabled\n", | |
110 | progname); | |
111 | return 0; | |
112 | } | |
113 | ||
114 | if (cur_typ == NULL) { | |
115 | dbprintf("no current type\n"); | |
116 | return 0; | |
117 | } | |
118 | ||
119 | pf = cur_typ->pfunc; | |
120 | if (pf == NULL) { | |
121 | dbprintf("no handler function for type %s, write unsupported.\n", | |
122 | cur_typ->name); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | /* move past the "write" command */ | |
127 | argc--; | |
128 | argv++; | |
129 | ||
130 | (*pf)(DB_WRITE, cur_typ->fields, argc, argv); | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | /* compare significant portions of commands */ | |
136 | ||
137 | static int | |
138 | sigcmp( | |
139 | char *s1, | |
140 | char *s2, | |
141 | int sig) | |
142 | { | |
143 | int sigcnt; | |
144 | ||
145 | if (!s1 || !s2) | |
146 | return 0; | |
147 | ||
148 | for (sigcnt = 0; *s1 == *s2; s1++, s2++) { | |
149 | sigcnt++; | |
150 | if (*s1 == '\0') | |
151 | return 1; | |
152 | } | |
153 | if (*s1 && *s2) | |
154 | return 0; | |
155 | ||
156 | if (sig && (sigcnt >= sig)) | |
157 | return 1; | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | /* ARGSUSED */ | |
163 | static void | |
164 | bwrite_lshift( | |
165 | int start, | |
166 | int len, | |
167 | int shift, | |
168 | int from, | |
169 | int to) | |
170 | { | |
171 | char *base; | |
172 | ||
173 | if (shift == -1) | |
174 | shift = 1; | |
175 | if (start == -1) | |
176 | start = 0; | |
177 | if (len == -1) | |
178 | len = iocur_top->len - start; | |
179 | ||
180 | if (len+start > iocur_top->len) { | |
181 | dbprintf("length (%d) too large for data block size (%d)", | |
182 | len, iocur_top->len); | |
183 | } | |
184 | ||
185 | base = (char *)iocur_top->data + start; | |
186 | ||
187 | memcpy(base, base+shift, len-shift); | |
188 | memset(base+(len-shift), 0, shift); | |
189 | } | |
190 | ||
191 | /* ARGSUSED */ | |
192 | static void | |
193 | bwrite_rshift( | |
194 | int start, | |
195 | int len, | |
196 | int shift, | |
197 | int from, | |
198 | int to) | |
199 | { | |
200 | char *base; | |
201 | ||
202 | if (shift == -1) | |
203 | shift = 1; | |
204 | if (start == -1) | |
205 | start = 0; | |
206 | if (len == -1) | |
207 | len = iocur_top->len - start; | |
208 | ||
209 | if (len+start > iocur_top->len) { | |
210 | dbprintf("length (%d) too large for data block size (%d)", | |
211 | len, iocur_top->len); | |
212 | } | |
213 | ||
214 | base = (char *)iocur_top->data + start; | |
215 | ||
216 | memcpy(base+shift, base, len-shift); | |
217 | memset(base, 0, shift); | |
218 | } | |
219 | ||
220 | /* ARGSUSED */ | |
221 | static void | |
222 | bwrite_lrot( | |
223 | int start, | |
224 | int len, | |
225 | int shift, | |
226 | int from, | |
227 | int to) | |
228 | { | |
229 | char *base; | |
230 | char *hold_region; | |
231 | ||
232 | if (shift == -1) | |
233 | shift = 1; | |
234 | if (start == -1) | |
235 | start = 0; | |
236 | if (len == -1) | |
237 | len = iocur_top->len - start; | |
238 | ||
239 | if (len+start > iocur_top->len) { | |
240 | dbprintf("length (%d) too large for data block size (%d)", | |
241 | len, iocur_top->len); | |
242 | } | |
243 | ||
244 | base = (char *)iocur_top->data + start; | |
245 | ||
246 | hold_region = xmalloc(shift); | |
247 | memcpy(hold_region, base, shift); | |
248 | memcpy(base, base+shift, len-shift); | |
249 | memcpy(base+(len-shift), hold_region, shift); | |
250 | } | |
251 | ||
252 | /* ARGSUSED */ | |
253 | static void | |
254 | bwrite_rrot( | |
255 | int start, | |
256 | int len, | |
257 | int shift, | |
258 | int from, | |
259 | int to) | |
260 | { | |
261 | char *base; | |
262 | char *hold_region; | |
263 | ||
264 | if (shift == -1) | |
265 | shift = 1; | |
266 | if (start == -1) | |
267 | start = 0; | |
268 | if (len == -1) | |
269 | len = iocur_top->len - start; | |
270 | ||
271 | if (len+start > iocur_top->len) { | |
272 | dbprintf("length (%d) too large for data block size (%d)", | |
273 | len, iocur_top->len); | |
274 | } | |
275 | ||
276 | base = (char *)iocur_top->data + start; | |
277 | ||
278 | hold_region = xmalloc(shift); | |
279 | memcpy(hold_region, base+(len-shift), shift); | |
0e6b2a43 | 280 | memmove(base+shift, base, len-shift); |
2bd0ea18 NS |
281 | memcpy(base, hold_region, shift); |
282 | } | |
283 | ||
284 | /* ARGSUSED */ | |
285 | static void | |
286 | bwrite_seq( | |
287 | int start, | |
288 | int len, | |
289 | int step, | |
290 | int from, | |
291 | int to) | |
292 | { | |
293 | int i; | |
294 | int tmp; | |
295 | int base; | |
296 | int range; | |
297 | int top; | |
0e6b2a43 | 298 | char *buf; |
2bd0ea18 NS |
299 | |
300 | if (start == -1) | |
301 | start = 0; | |
302 | ||
303 | if (len == -1) | |
304 | len = iocur_top->len - start; | |
305 | ||
306 | if (len+start > iocur_top->len) { | |
307 | dbprintf("length (%d) too large for data block size (%d)", | |
308 | len, iocur_top->len); | |
309 | } | |
310 | ||
311 | if (from == -1 || from > 255) | |
312 | from = 0; | |
313 | if (to == -1 || to > 255) | |
314 | to = 255; | |
315 | if (step == -1) | |
316 | step = 1; | |
317 | ||
318 | base = from; | |
319 | top = to; | |
320 | if (from > to) { | |
321 | base = to; | |
322 | top = from; | |
323 | if (step > 0) | |
324 | step = -step; | |
325 | } | |
326 | ||
327 | range = top - base; | |
0e6b2a43 | 328 | buf = (char *)iocur_top->data + start; |
2bd0ea18 NS |
329 | |
330 | tmp = 0; | |
331 | for (i = start; i < start+len; i++) { | |
332 | *buf++ = tmp + base; | |
333 | tmp = (tmp + step)%(range+1); | |
334 | } | |
335 | } | |
336 | ||
337 | /* ARGSUSED */ | |
338 | static void | |
339 | bwrite_random( | |
340 | int start, | |
341 | int len, | |
342 | int shift, | |
343 | int from, | |
344 | int to) | |
345 | { | |
346 | int i; | |
0e6b2a43 | 347 | char *buf; |
2bd0ea18 NS |
348 | |
349 | if (start == -1) | |
350 | start = 0; | |
351 | ||
352 | if (len == -1) | |
353 | len = iocur_top->len - start; | |
354 | ||
355 | if (len+start > iocur_top->len) { | |
356 | dbprintf("length (%d) too large for data block size (%d)", | |
357 | len, iocur_top->len); | |
358 | } | |
359 | ||
0e6b2a43 NS |
360 | buf = (char *)iocur_top->data + start; |
361 | ||
2bd0ea18 NS |
362 | for (i = start; i < start+len; i++) |
363 | *buf++ = (char)lrand48(); | |
364 | } | |
365 | ||
366 | /* ARGSUSED */ | |
367 | static void | |
368 | bwrite_fill( | |
369 | int start, | |
370 | int len, | |
371 | int value, | |
372 | int from, | |
373 | int to) | |
374 | { | |
375 | char *base; | |
376 | ||
377 | if (value == -1) | |
378 | value = 0; | |
379 | if (start == -1) | |
380 | start = 0; | |
381 | if (len == -1) | |
382 | len = iocur_top->len - start; | |
383 | ||
384 | if (len+start > iocur_top->len) { | |
385 | dbprintf("length (%d) too large for data block size (%d)", | |
386 | len, iocur_top->len); | |
387 | } | |
388 | ||
389 | base = (char *)iocur_top->data + start; | |
390 | ||
391 | memset(base, value, len); | |
392 | } | |
393 | ||
394 | static struct bw_cmd { | |
395 | void (*cmdfunc)(int,int,int,int,int); | |
396 | char *cmdstr; | |
397 | int sig_chars; | |
398 | int argmin; | |
399 | int argmax; | |
400 | int shiftcount_arg; | |
401 | int from_arg; | |
402 | int to_arg; | |
403 | int start_arg; | |
404 | int len_arg; | |
405 | char *usage; | |
406 | } bw_cmdtab[] = { | |
407 | /* cmd sig min max sh frm to start len */ | |
408 | { bwrite_lshift, "lshift", 2, 0, 3, 1, 0, 0, 2, 3, | |
409 | "[shiftcount] [start] [len]", }, | |
410 | { bwrite_rshift, "rshift", 2, 0, 3, 1, 0, 0, 2, 3, | |
411 | "[shiftcount] [start] [len]", }, | |
412 | { bwrite_lrot, "lrot", 2, 0, 3, 1, 0, 0, 2, 3, | |
413 | "[shiftcount] [start] [len]", }, | |
414 | { bwrite_rrot, "rrot", 2, 0, 3, 1, 0, 0, 2, 3, | |
415 | "[shiftcount] [start] [len]", }, | |
416 | { bwrite_seq, "sequence", 3, 0, 4, 0, 1, 2, 3, 4, | |
417 | "[from] [to] [start] [len]", }, | |
418 | { bwrite_random, "random", 3, 0, 2, 0, 0, 0, 1, 2, | |
419 | "[start] [len]", }, | |
420 | { bwrite_fill, "fill", 1, 1, 3, 1, 0, 0, 2, 3, | |
421 | "num [start] [len]" } | |
422 | }; | |
423 | ||
424 | #define BWRITE_CMD_MAX (sizeof(bw_cmdtab)/sizeof(bw_cmdtab[0])) | |
425 | ||
426 | static int | |
427 | convert_oct( | |
428 | char *arg, | |
429 | int *ret) | |
430 | { | |
431 | int count; | |
432 | int i; | |
433 | int val = 0; | |
434 | ||
435 | /* only allow 1 case, '\' and 3 octal digits (or less) */ | |
436 | ||
437 | for (count = 0; count < 3; count++) { | |
438 | if (arg[count] == '\0') | |
439 | break; | |
440 | ||
441 | if ((arg[count] < '0') && (arg[count] > '7')) | |
442 | break; | |
443 | } | |
444 | ||
445 | for (i = 0; i < count; i++) { | |
446 | val |= ((arg[(count-1)-i]-'0')&0x07)<<(i*3); | |
447 | } | |
448 | ||
449 | *ret = val&0xff; | |
450 | ||
451 | return(count); | |
452 | } | |
453 | ||
454 | #define NYBBLE(x) (isdigit(x)?(x-'0'):(tolower(x)-'a'+0xa)) | |
455 | ||
456 | static char * | |
457 | convert_arg( | |
458 | char *arg, | |
459 | int bit_length) | |
460 | { | |
461 | int i; | |
462 | static char *buf = NULL; | |
463 | char *rbuf; | |
464 | long long *value; | |
465 | int alloc_size; | |
466 | char *ostr; | |
467 | int octval, ret; | |
468 | ||
469 | if (bit_length <= 64) | |
470 | alloc_size = 8; | |
471 | else | |
472 | alloc_size = (bit_length+7)/8; | |
473 | ||
474 | buf = xrealloc(buf, alloc_size); | |
475 | memset(buf, 0, alloc_size); | |
476 | value = (long long *)buf; | |
477 | rbuf = buf; | |
478 | ||
479 | if (*arg == '\"') { | |
480 | /* handle strings */ | |
481 | ||
482 | /* zap closing quote if there is one */ | |
483 | if ((ostr = strrchr(arg+1, '\"')) != NULL) | |
484 | *ostr = '\0'; | |
485 | ||
486 | ostr = arg+1; | |
487 | for (i = 0; i < alloc_size; i++) { | |
488 | if (!*ostr) | |
489 | break; | |
490 | ||
491 | /* do octal */ | |
492 | if (*ostr == '\\') { | |
493 | if (*(ostr+1) >= '0' || *(ostr+1) <= '7') { | |
494 | ret = convert_oct(ostr+1, &octval); | |
495 | *rbuf++ = octval; | |
496 | ostr += ret+1; | |
497 | continue; | |
498 | } | |
499 | } | |
500 | *rbuf++ = *ostr++; | |
501 | } | |
502 | ||
503 | return buf; | |
504 | } else if (arg[0] == '#' || strchr(arg,'-')) { | |
505 | /* | |
506 | * handle hex blocks ie | |
507 | * #00112233445566778899aabbccddeeff | |
508 | * and uuids ie | |
509 | * 1122334455667788-99aa-bbcc-ddee-ff00112233445566778899 | |
510 | */ | |
511 | int bytes=bit_length/8; | |
512 | ||
513 | /* skip leading hash */ | |
514 | if (*arg=='#') arg++; | |
515 | ||
516 | while (*arg && bytes--) { | |
517 | /* skip hypens */ | |
518 | while (*arg=='-') arg++; | |
519 | ||
520 | /* get first nybble */ | |
521 | if (!isxdigit(*arg)) return NULL; | |
522 | *rbuf=NYBBLE(*arg)<<4; | |
523 | arg++; | |
524 | ||
525 | /* skip more hyphens */ | |
526 | while (*arg=='-') arg++; | |
527 | ||
528 | /* get second nybble */ | |
529 | if (!isxdigit(*arg)) return NULL; | |
530 | *rbuf++|=NYBBLE(*arg); | |
531 | arg++; | |
532 | } | |
533 | if (bytes<0&&*arg) return NULL; | |
534 | return buf; | |
535 | } else { | |
536 | /* | |
537 | * handle integers | |
538 | */ | |
539 | *value = strtoll(arg, NULL, 0); | |
540 | ||
541 | #if __BYTE_ORDER == BIG_ENDIAN | |
542 | /* hackery for big endian */ | |
543 | if (bit_length <= 8) { | |
544 | rbuf += 7; | |
545 | } else if (bit_length <= 16) { | |
546 | rbuf += 6; | |
547 | } else if (bit_length <= 32) { | |
548 | rbuf += 4; | |
549 | } | |
550 | #endif | |
551 | return rbuf; | |
552 | } | |
553 | } | |
554 | ||
555 | ||
556 | /* ARGSUSED */ | |
557 | void | |
558 | write_struct( | |
559 | const field_t *fields, | |
560 | int argc, | |
561 | char **argv) | |
562 | { | |
563 | const ftattr_t *fa; | |
564 | flist_t *fl; | |
565 | flist_t *sfl; | |
566 | int bit_length; | |
567 | char *buf; | |
568 | int parentoffset; | |
569 | ||
570 | if (argc != 2) { | |
571 | dbprintf("usage: write fieldname value\n"); | |
572 | return; | |
573 | } | |
574 | ||
575 | fl = flist_scan(argv[0]); | |
576 | if (!fl) { | |
577 | dbprintf("unable to parse '%s'.\n", argv[0]); | |
578 | return; | |
579 | } | |
580 | ||
581 | /* if we're a root field type, go down 1 layer to get field list */ | |
582 | if (fields->name[0] == '\0') { | |
583 | fa = &ftattrtab[fields->ftyp]; | |
584 | ASSERT(fa->ftyp == fields->ftyp); | |
585 | fields = fa->subfld; | |
586 | } | |
587 | ||
588 | /* run down the field list and set offsets into the data */ | |
589 | if (!flist_parse(fields, fl, iocur_top->data, 0)) { | |
590 | flist_free(fl); | |
591 | dbprintf("parsing error\n"); | |
592 | return; | |
593 | } | |
594 | ||
595 | sfl = fl; | |
596 | parentoffset = 0; | |
597 | while (sfl->child) { | |
598 | parentoffset = sfl->offset; | |
599 | sfl = sfl->child; | |
600 | } | |
601 | ||
602 | bit_length = fsize(sfl->fld, iocur_top->data, parentoffset, 0); | |
603 | bit_length *= fcount(sfl->fld, iocur_top->data, parentoffset); | |
604 | ||
605 | /* convert this to a generic conversion routine */ | |
606 | /* should be able to handle str, num, or even labels */ | |
607 | ||
608 | buf = convert_arg(argv[1], bit_length); | |
609 | if (!buf) { | |
610 | dbprintf("unable to convert value '%s'.\n", argv[1]); | |
611 | return; | |
612 | } | |
613 | ||
614 | setbitval(iocur_top->data, sfl->offset, bit_length, buf); | |
615 | write_cur(); | |
616 | ||
617 | flist_print(fl); | |
618 | print_flist(fl); | |
619 | flist_free(fl); | |
620 | } | |
621 | ||
622 | /* ARGSUSED */ | |
623 | void | |
624 | write_string( | |
625 | const field_t *fields, | |
626 | int argc, | |
627 | char **argv) | |
628 | { | |
629 | char *buf; | |
630 | int i; | |
631 | ||
632 | if (argc != 1) { | |
633 | dbprintf("usage (in string mode): write \"string...\"\n"); | |
634 | return; | |
635 | } | |
636 | ||
637 | buf = convert_arg(argv[0], (int)((strlen(argv[0])+1)*8)); | |
638 | for (i = 0; i < iocur_top->len; i++) { | |
639 | ((char *)iocur_top->data)[i] = *buf; | |
640 | if (*buf++ == '\0') | |
641 | break; | |
642 | } | |
643 | ||
644 | /* write back to disk */ | |
645 | write_cur(); | |
646 | } | |
647 | ||
648 | /* ARGSUSED */ | |
649 | void | |
650 | write_block( | |
651 | const field_t *fields, | |
652 | int argc, | |
653 | char **argv) | |
654 | { | |
655 | int i; | |
656 | int shiftcount = -1; | |
657 | int start = -1; | |
658 | int len = -1; | |
659 | int from = -1; | |
660 | int to = -1; | |
661 | struct bw_cmd *cmd = NULL; | |
662 | ||
663 | if (argc <= 1 || argc > 5) | |
664 | goto block_usage; | |
665 | ||
666 | for (i = 0; i < BWRITE_CMD_MAX; i++) { | |
667 | if (sigcmp(argv[0], bw_cmdtab[i].cmdstr, | |
668 | bw_cmdtab[i].sig_chars)) { | |
669 | cmd = &bw_cmdtab[i]; | |
670 | break; | |
671 | } | |
672 | } | |
673 | ||
674 | if (!cmd) { | |
675 | dbprintf("write: invalid subcommand\n"); | |
676 | goto block_usage; | |
677 | } | |
678 | ||
679 | if ((argc < cmd->argmin + 1) || (argc > cmd->argmax + 1)) { | |
680 | dbprintf("write %s: invalid number of arguments\n", | |
681 | cmd->cmdstr); | |
682 | goto block_usage; | |
683 | } | |
684 | ||
685 | if (cmd->shiftcount_arg && (cmd->shiftcount_arg < argc)) | |
686 | shiftcount = (int)strtoul(argv[cmd->shiftcount_arg], NULL, 0); | |
687 | if (cmd->start_arg && (cmd->start_arg < argc)) | |
688 | start = (int)strtoul(argv[cmd->start_arg], NULL, 0); | |
689 | if (cmd->len_arg && (cmd->len_arg < argc)) | |
690 | len = (int)strtoul(argv[cmd->len_arg], NULL, 0); | |
691 | if (cmd->from_arg && (cmd->len_arg < argc)) | |
692 | from = (int)strtoul(argv[cmd->from_arg], NULL, 0); | |
693 | if (cmd->to_arg && (cmd->len_arg < argc)) | |
694 | to = (int)strtoul(argv[cmd->to_arg], NULL, 0); | |
695 | ||
696 | cmd->cmdfunc(start, len, shiftcount, from, to); | |
697 | ||
698 | /* write back to disk */ | |
699 | write_cur(); | |
700 | return; | |
701 | ||
702 | block_usage: | |
703 | ||
704 | dbprintf("usage: write (in data mode)\n"); | |
705 | for (i = 0; i < BWRITE_CMD_MAX; i++) { | |
706 | dbprintf(" %-9.9s %s\n", | |
707 | bw_cmdtab[i].cmdstr, bw_cmdtab[i].usage); | |
708 | } | |
709 | dbprintf("\n"); | |
710 | return; | |
711 | } |