1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
|
/* $NetBSD: ccdconfig.c,v 1.2.2.1 1995/11/11 02:43:35 thorpej Exp $ */
/*
* Copyright (c) 1995 Jason R. Thorpe.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project
* by Jason R. Thorpe.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/linker.h>
#include <sys/disklabel.h>
#include <sys/device.h>
#include <sys/stat.h>
#include <sys/module.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/devicestat.h>
#include <sys/ccdvar.h>
#include "pathnames.h"
static int lineno = 0;
static int verbose = 0;
static char *ccdconf = _PATH_CCDCONF;
static char *core = NULL;
static char *kernel = NULL;
struct flagval {
char *fv_flag;
int fv_val;
} flagvaltab[] = {
{ "CCDF_SWAP", CCDF_SWAP },
{ "CCDF_UNIFORM", CCDF_UNIFORM },
{ "CCDF_MIRROR", CCDF_MIRROR },
{ "CCDF_PARITY", CCDF_PARITY },
{ NULL, 0 },
};
static struct nlist nl[] = {
{ "_ccd_softc" },
#define SYM_CCDSOFTC 0
{ "_numccd" },
#define SYM_NUMCCD 1
{ NULL },
};
#define CCD_CONFIG 0 /* configure a device */
#define CCD_CONFIGALL 1 /* configure all devices */
#define CCD_UNCONFIG 2 /* unconfigure a device */
#define CCD_UNCONFIGALL 3 /* unconfigure all devices */
#define CCD_DUMP 4 /* dump a ccd's configuration */
static int checkdev __P((char *));
static int do_io __P((char *, u_long, struct ccd_ioctl *));
static int do_single __P((int, char **, int));
static int do_all __P((int));
static int dump_ccd __P((int, char **));
static int getmaxpartitions __P((void));
static int getrawpartition __P((void));
static int flags_to_val __P((char *));
static void print_ccd_info __P((struct ccd_softc *, kvm_t *));
static char *resolve_ccdname __P((char *));
static void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
int ch, options = 0, action = CCD_CONFIG;
while ((ch = getopt(argc, argv, "cCf:gM:N:uUv")) != -1) {
switch (ch) {
case 'c':
action = CCD_CONFIG;
++options;
break;
case 'C':
action = CCD_CONFIGALL;
++options;
break;
case 'f':
ccdconf = optarg;
break;
case 'g':
action = CCD_DUMP;
break;
case 'M':
core = optarg;
break;
case 'N':
kernel = optarg;
break;
case 'u':
action = CCD_UNCONFIG;
++options;
break;
case 'U':
action = CCD_UNCONFIGALL;
++options;
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (options > 1)
usage();
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (core != NULL || kernel != NULL || action != CCD_DUMP) {
setegid(getgid());
setgid(getgid());
}
if (modfind("ccd") < 0) {
/* Not present in kernel, try loading it */
if (kldload("ccd") < 0 || modfind("ccd") < 0)
warn("ccd module not available!");
}
switch (action) {
case CCD_CONFIG:
case CCD_UNCONFIG:
exit(do_single(argc, argv, action));
/* NOTREACHED */
case CCD_CONFIGALL:
case CCD_UNCONFIGALL:
exit(do_all(action));
/* NOTREACHED */
case CCD_DUMP:
exit(dump_ccd(argc, argv));
/* NOTREACHED */
}
/* NOTREACHED */
return (0);
}
static int
do_single(argc, argv, action)
int argc;
char **argv;
int action;
{
struct ccd_ioctl ccio;
char *ccd, *cp, *cp2, **disks;
int noflags = 0, i, ileave, flags = 0, j;
bzero(&ccio, sizeof(ccio));
/*
* If unconfiguring, all arguments are treated as ccds.
*/
if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) {
for (i = 0; argc != 0; ) {
cp = *argv++; --argc;
if ((ccd = resolve_ccdname(cp)) == NULL) {
warnx("invalid ccd name: %s", cp);
i = 1;
continue;
}
if (do_io(ccd, CCDIOCCLR, &ccio))
i = 1;
else
if (verbose)
printf("%s unconfigured\n", cp);
}
return (i);
}
/* Make sure there are enough arguments. */
if (argc < 4) {
if (argc == 3) {
/* Assume that no flags are specified. */
noflags = 1;
} else {
if (action == CCD_CONFIGALL) {
warnx("%s: bad line: %d", ccdconf, lineno);
return (1);
} else
usage();
}
}
/* First argument is the ccd to configure. */
cp = *argv++; --argc;
if ((ccd = resolve_ccdname(cp)) == NULL) {
warnx("invalid ccd name: %s", cp);
return (1);
}
/* Next argument is the interleave factor. */
cp = *argv++; --argc;
errno = 0; /* to check for ERANGE */
ileave = (int)strtol(cp, &cp2, 10);
if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) {
warnx("invalid interleave factor: %s", cp);
return (1);
}
if (noflags == 0) {
/* Next argument is the ccd configuration flags. */
cp = *argv++; --argc;
if ((flags = flags_to_val(cp)) < 0) {
warnx("invalid flags argument: %s", cp);
return (1);
}
}
/* Next is the list of disks to make the ccd from. */
disks = malloc(argc * sizeof(char *));
if (disks == NULL) {
warnx("no memory to configure ccd");
return (1);
}
for (i = 0; argc != 0; ) {
cp = *argv++; --argc;
if ((j = checkdev(cp)) == 0)
disks[i++] = cp;
else {
warnx("%s: %s", cp, strerror(j));
return (1);
}
}
/* Fill in the ccio. */
ccio.ccio_disks = disks;
ccio.ccio_ndisks = i;
ccio.ccio_ileave = ileave;
ccio.ccio_flags = flags;
if (do_io(ccd, CCDIOCSET, &ccio)) {
free(disks);
return (1);
}
if (verbose) {
printf("ccd%d: %d components ", ccio.ccio_unit,
ccio.ccio_ndisks);
for (i = 0; i < ccio.ccio_ndisks; ++i) {
if ((cp2 = strrchr(disks[i], '/')) != NULL)
++cp2;
else
cp2 = disks[i];
printf("%c%s%c",
i == 0 ? '(' : ' ', cp2,
i == ccio.ccio_ndisks - 1 ? ')' : ',');
}
printf(", %lu blocks ", (u_long)ccio.ccio_size);
if (ccio.ccio_ileave != 0)
printf("interleaved at %d blocks\n", ccio.ccio_ileave);
else
printf("concatenated\n");
}
free(disks);
return (0);
}
static int
do_all(action)
int action;
{
FILE *f;
char line[_POSIX2_LINE_MAX];
char *cp, **argv;
int argc, rval;
gid_t egid;
rval = 0;
egid = getegid();
setegid(getgid());
if ((f = fopen(ccdconf, "r")) == NULL) {
setegid(egid);
warn("fopen: %s", ccdconf);
return (1);
}
setegid(egid);
while (fgets(line, sizeof(line), f) != NULL) {
argc = 0;
argv = NULL;
++lineno;
if ((cp = strrchr(line, '\n')) != NULL)
*cp = '\0';
/* Break up the line and pass it's contents to do_single(). */
if (line[0] == '\0')
goto end_of_line;
for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) {
if (*cp == '#')
break;
if ((argv = realloc(argv,
sizeof(char *) * ++argc)) == NULL) {
warnx("no memory to configure ccds");
return (1);
}
argv[argc - 1] = cp;
/*
* If our action is to unconfigure all, then pass
* just the first token to do_single() and ignore
* the rest. Since this will be encountered on
* our first pass through the line, the Right
* Thing will happen.
*/
if (action == CCD_UNCONFIGALL) {
if (do_single(argc, argv, action))
rval = 1;
goto end_of_line;
}
}
if (argc != 0)
if (do_single(argc, argv, action))
rval = 1;
end_of_line:
if (argv != NULL)
free(argv);
}
(void)fclose(f);
return (rval);
}
static int
checkdev(path)
char *path;
{
struct stat st;
if (stat(path, &st) != 0)
return (errno);
if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
return (EINVAL);
return (0);
}
static int
pathtounit(path, unitp)
char *path;
int *unitp;
{
struct stat st;
int maxpartitions;
if (stat(path, &st) != 0)
return (errno);
if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
return (EINVAL);
if ((maxpartitions = getmaxpartitions()) < 0)
return (errno);
*unitp = minor(st.st_rdev) / maxpartitions;
return (0);
}
static char *
resolve_ccdname(name)
char *name;
{
char c, *path;
size_t len, newlen;
int rawpart;
if (name[0] == '/' || name[0] == '.') {
/* Assume they gave the correct pathname. */
return (strdup(name));
}
len = strlen(name);
c = name[len - 1];
newlen = len + 8;
if ((path = malloc(newlen)) == NULL)
return (NULL);
bzero(path, newlen);
if (isdigit(c)) {
if ((rawpart = getrawpartition()) < 0) {
free(path);
return (NULL);
}
(void)sprintf(path, "/dev/%s%c", name, 'a' + rawpart);
} else
(void)sprintf(path, "/dev/%s", name);
return (path);
}
static int
do_io(path, cmd, cciop)
char *path;
u_long cmd;
struct ccd_ioctl *cciop;
{
int fd;
char *cp;
if ((fd = open(path, O_RDWR, 0640)) < 0) {
warn("open: %s", path);
return (1);
}
if (ioctl(fd, cmd, cciop) < 0) {
switch (cmd) {
case CCDIOCSET:
cp = "CCDIOCSET";
break;
case CCDIOCCLR:
cp = "CCDIOCCLR";
break;
default:
cp = "unknown";
}
warn("ioctl (%s): %s", cp, path);
return (1);
}
return (0);
}
#define KVM_ABORT(kd, str) { \
(void)kvm_close((kd)); \
warnx((str)); \
warnx(kvm_geterr((kd))); \
return (1); \
}
static int
dump_ccd(argc, argv)
int argc;
char **argv;
{
char errbuf[_POSIX2_LINE_MAX], *ccd, *cp;
struct ccd_softc *cs, *kcs;
size_t readsize;
int i, error, numccd, numconfiged = 0;
kvm_t *kd;
bzero(errbuf, sizeof(errbuf));
if ((kd = kvm_openfiles(kernel, core, NULL, O_RDONLY,
errbuf)) == NULL) {
warnx("can't open kvm: %s", errbuf);
return (1);
}
if (kvm_nlist(kd, nl))
KVM_ABORT(kd, "ccd-related symbols not available");
/* Check to see how many ccds are currently configured. */
if (kvm_read(kd, nl[SYM_NUMCCD].n_value, (char *)&numccd,
sizeof(numccd)) != sizeof(numccd))
KVM_ABORT(kd, "can't determine number of configured ccds");
if (numccd == 0) {
printf("ccd driver in kernel, but is uninitialized\n");
goto done;
}
/* Allocate space for the configuration data. */
readsize = numccd * sizeof(struct ccd_softc);
if ((cs = malloc(readsize)) == NULL) {
warnx("no memory for configuration data");
goto bad;
}
bzero(cs, readsize);
/*
* Read the ccd configuration data from the kernel and dump
* it to stdout.
*/
if (kvm_read(kd, nl[SYM_CCDSOFTC].n_value, (char *)&kcs,
sizeof(kcs)) != sizeof(kcs)) {
free(cs);
KVM_ABORT(kd, "can't find pointer to configuration data");
}
if (kvm_read(kd, (u_long)kcs, (char *)cs, readsize) != readsize) {
free(cs);
KVM_ABORT(kd, "can't read configuration data");
}
if (argc == 0) {
for (i = 0; i < numccd; ++i)
if (cs[i].sc_flags & CCDF_INITED) {
++numconfiged;
print_ccd_info(&cs[i], kd);
}
if (numconfiged == 0)
printf("no concatenated disks configured\n");
} else {
while (argc) {
cp = *argv++; --argc;
if ((ccd = resolve_ccdname(cp)) == NULL) {
warnx("invalid ccd name: %s", cp);
continue;
}
if ((error = pathtounit(ccd, &i)) != 0) {
warnx("%s: %s", ccd, strerror(error));
continue;
}
if (i >= numccd) {
warnx("ccd%d not configured", i);
continue;
}
if (cs[i].sc_flags & CCDF_INITED)
print_ccd_info(&cs[i], kd);
else
printf("ccd%d not configured\n", i);
}
}
free(cs);
done:
(void)kvm_close(kd);
return (0);
bad:
(void)kvm_close(kd);
return (1);
}
static void
print_ccd_info(cs, kd)
struct ccd_softc *cs;
kvm_t *kd;
{
static int header_printed = 0;
struct ccdcinfo *cip;
size_t readsize;
char path[MAXPATHLEN];
int i;
if (header_printed == 0 && verbose) {
printf("# ccd\t\tileave\tflags\tcompnent devices\n");
header_printed = 1;
}
readsize = cs->sc_nccdisks * sizeof(struct ccdcinfo);
if ((cip = malloc(readsize)) == NULL) {
warn("ccd%d: can't allocate memory for component info",
cs->sc_unit);
return;
}
bzero(cip, readsize);
/* Dump out softc information. */
printf("ccd%d\t\t%d\t%d\t", cs->sc_unit, cs->sc_ileave,
cs->sc_cflags & CCDF_USERMASK);
fflush(stdout);
/* Read in the component info. */
if (kvm_read(kd, (u_long)cs->sc_cinfo, (char *)cip,
readsize) != readsize) {
printf("\n");
warnx("can't read component info");
warnx(kvm_geterr(kd));
goto done;
}
/* Read component pathname and display component info. */
for (i = 0; i < cs->sc_nccdisks; ++i) {
if (kvm_read(kd, (u_long)cip[i].ci_path, (char *)path,
cip[i].ci_pathlen) != cip[i].ci_pathlen) {
printf("\n");
warnx("can't read component pathname");
warnx(kvm_geterr(kd));
goto done;
}
printf((i + 1 < cs->sc_nccdisks) ? "%s " : "%s\n", path);
fflush(stdout);
}
done:
free(cip);
}
static int
getmaxpartitions()
{
return (MAXPARTITIONS);
}
static int
getrawpartition()
{
return (RAW_PART);
}
static int
flags_to_val(flags)
char *flags;
{
char *cp, *tok;
int i, tmp, val = ~CCDF_USERMASK;
size_t flagslen;
/*
* The most common case is that of NIL flags, so check for
* those first.
*/
if (strcmp("none", flags) == 0 || strcmp("0x0", flags) == 0 ||
strcmp("0", flags) == 0)
return (0);
flagslen = strlen(flags);
/* Check for values represented by strings. */
if ((cp = strdup(flags)) == NULL)
err(1, "no memory to parse flags");
tmp = 0;
for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) {
for (i = 0; flagvaltab[i].fv_flag != NULL; ++i)
if (strcmp(tok, flagvaltab[i].fv_flag) == 0)
break;
if (flagvaltab[i].fv_flag == NULL) {
free(cp);
goto bad_string;
}
tmp |= flagvaltab[i].fv_val;
}
/* If we get here, the string was ok. */
free(cp);
val = tmp;
goto out;
bad_string:
/* Check for values represented in hex. */
if (flagslen > 2 && flags[0] == '0' && flags[1] == 'x') {
errno = 0; /* to check for ERANGE */
val = (int)strtol(&flags[2], &cp, 16);
if ((errno == ERANGE) || (*cp != '\0'))
return (-1);
goto out;
}
/* Check for values represented in decimal. */
errno = 0; /* to check for ERANGE */
val = (int)strtol(flags, &cp, 10);
if ((errno == ERANGE) || (*cp != '\0'))
return (-1);
out:
return (((val & ~CCDF_USERMASK) == 0) ? val : -1);
}
static void
usage()
{
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
"usage: ccdconfig [-cv] ccd ileave [flags] dev [...]",
" ccdconfig -C [-v] [-f config_file]",
" ccdconfig -u [-v] ccd [...]",
" ccdconfig -U [-v] [-f config_file]",
" ccdconfig -g [-M core] [-N system] [ccd [...]]");
exit(1);
}
/* Local Variables: */
/* c-argdecl-indent: 8 */
/* c-indent-level: 8 */
/* End: */
|