2 * Copyright (c) 1995 Jason R. Thorpe.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed for the NetBSD Project
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $NetBSD: ccdconfig.c,v 1.2.2.1 1995/11/11 02:43:35 thorpej Exp $
33 * $FreeBSD: src/sbin/ccdconfig/ccdconfig.c,v 1.16.2.2 2000/12/11 01:03:25 obrien Exp $
36 #define _KERNEL_STRUCTURES
37 #include <sys/param.h>
38 #include <sys/linker.h>
40 #include <sys/module.h>
53 #include <sys/devicestat.h>
54 #include <sys/ccdvar.h>
56 #include "pathnames.h"
58 static int lineno = 0;
59 static int verbose = 0;
60 static const char *ccdconf = _PATH_CCDCONF;
62 static char *core = NULL;
63 static char *kernel = NULL;
69 { "CCDF_SWAP", CCDF_SWAP },
70 { "CCDF_UNIFORM", CCDF_UNIFORM },
71 { "CCDF_MIRROR", CCDF_MIRROR },
72 { "CCDF_PARITY", CCDF_PARITY },
76 static struct nlist nl[] = {
77 { "_ccd_softc", 0, 0, 0, 0 },
78 #define SYM_CCDSOFTC 0
79 { "_numccd", 0, 0, 0, 0 },
81 { NULL , 0, 0, 0, 0 },
84 #define CCD_CONFIG 0 /* configure a device */
85 #define CCD_CONFIGALL 1 /* configure all devices */
86 #define CCD_UNCONFIG 2 /* unconfigure a device */
87 #define CCD_UNCONFIGALL 3 /* unconfigure all devices */
88 #define CCD_DUMP 4 /* dump a ccd's configuration */
90 static int checkdev(char *);
91 static int do_io(char *, u_long, struct ccd_ioctl *);
92 static int do_single(int, char **, int);
93 static int do_all(int);
94 static int dump_ccd(int, char **);
95 static int getmaxpartitions(void);
96 static int flags_to_val(char *);
97 static void print_ccd_info(struct ccd_softc *, kvm_t *);
98 static char *resolve_ccdname(char *);
99 static void usage(void);
102 main(int argc, char **argv)
104 int ch, options = 0, action = CCD_CONFIG;
106 while ((ch = getopt(argc, argv, "cCf:gM:N:uUv")) != -1) {
114 action = CCD_CONFIGALL;
135 action = CCD_UNCONFIG;
140 action = CCD_UNCONFIGALL;
159 * Discard setgid privileges if not the running kernel so that bad
160 * guys can't print interesting stuff from kernel memory.
162 if (core != NULL || kernel != NULL || action != CCD_DUMP) {
167 if (modfind("ccd") < 0) {
168 /* Not present in kernel, try loading it */
169 if (kldload("ccd") < 0 || modfind("ccd") < 0) {
170 warn("ccd module not available!\n"
171 "NOTE: Systems which don't have /boot as part of"
172 " the root partition\n"
173 " (as is the case with the default HAMMER"
174 " install) need to load ccd(4)\n"
175 " via /boot/loader.conf or compile it into"
183 exit(do_single(argc, argv, action));
187 case CCD_UNCONFIGALL:
188 exit(do_all(action));
192 exit(dump_ccd(argc, argv));
200 do_single(int argc, char **argv, int action)
202 struct ccd_ioctl ccio;
203 char *ccd, *cp, *cp2, **disks;
204 int noflags = 0, ileave, flags = 0, j;
207 bzero(&ccio, sizeof(ccio));
210 * If unconfiguring, all arguments are treated as ccds.
212 if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) {
213 for (i = 0; argc != 0; ) {
214 cp = *argv++; --argc;
215 if ((ccd = resolve_ccdname(cp)) == NULL) {
216 warnx("invalid ccd name: %s", cp);
220 if (do_io(ccd, CCDIOCCLR, &ccio))
224 printf("%s unconfigured\n", cp);
229 /* Make sure there are enough arguments. */
232 /* Assume that no flags are specified. */
235 if (action == CCD_CONFIGALL) {
236 warnx("%s: bad line: %d", ccdconf, lineno);
243 /* First argument is the ccd to configure. */
244 cp = *argv++; --argc;
245 if ((ccd = resolve_ccdname(cp)) == NULL) {
246 warnx("invalid ccd name: %s", cp);
250 /* Next argument is the interleave factor. */
251 cp = *argv++; --argc;
252 errno = 0; /* to check for ERANGE */
253 ileave = (int)strtol(cp, &cp2, 10);
254 if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) {
255 warnx("invalid interleave factor: %s", cp);
260 /* Next argument is the ccd configuration flags. */
261 cp = *argv++; --argc;
262 if ((flags = flags_to_val(cp)) < 0) {
263 warnx("invalid flags argument: %s", cp);
268 /* Next is the list of disks to make the ccd from. */
269 disks = malloc(argc * sizeof(char *));
271 warnx("no memory to configure ccd");
274 for (i = 0; argc != 0; ) {
275 cp = *argv++; --argc;
276 if ((j = checkdev(cp)) == 0)
279 warnx("%s: %s", cp, strerror(j));
284 /* Fill in the ccio. */
285 ccio.ccio_disks = disks;
286 ccio.ccio_ndisks = i;
287 ccio.ccio_ileave = ileave;
288 ccio.ccio_flags = flags;
290 if (do_io(ccd, CCDIOCSET, &ccio)) {
296 printf("ccd%d: %d components ", ccio.ccio_unit,
298 for (i = 0; i < ccio.ccio_ndisks; ++i) {
299 if ((cp2 = strrchr(disks[i], '/')) != NULL)
304 i == 0 ? '(' : ' ', cp2,
305 i == ccio.ccio_ndisks - 1 ? ')' : ',');
307 printf(", %ju blocks ", (uintmax_t)ccio.ccio_size);
308 if (ccio.ccio_ileave != 0)
309 printf("interleaved at %d blocks\n", ccio.ccio_ileave);
311 printf("concatenated\n");
322 char line[_POSIX2_LINE_MAX];
330 if ((f = fopen(ccdconf, "r")) == NULL) {
332 warn("fopen: %s", ccdconf);
337 while (fgets(line, sizeof(line), f) != NULL) {
341 if ((cp = strrchr(line, '\n')) != NULL)
344 /* Break up the line and pass it's contents to do_single(). */
347 for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) {
350 if ((argv = realloc(argv,
351 sizeof(char *) * ++argc)) == NULL) {
352 warnx("no memory to configure ccds");
357 * If our action is to unconfigure all, then pass
358 * just the first token to do_single() and ignore
359 * the rest. Since this will be encountered on
360 * our first pass through the line, the Right
363 if (action == CCD_UNCONFIGALL) {
364 if (do_single(argc, argv, action))
370 if (do_single(argc, argv, action))
387 if (stat(path, &st) != 0)
390 if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
397 pathtounit(char *path, int *unitp)
402 if (stat(path, &st) != 0)
405 if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
408 if ((maxpartitions = getmaxpartitions()) < 0)
411 *unitp = minor(st.st_rdev) / maxpartitions;
417 resolve_ccdname(char *name)
421 if (name[0] == '/' || name[0] == '.') {
422 /* Assume they gave the correct pathname. */
423 return (strdup(name));
426 asprintf(&path, "%s%s", _PATH_DEV, name);
432 do_io(char *path, u_long cmd, struct ccd_ioctl *cciop)
437 if ((fd = open(path, O_RDWR, 0640)) < 0) {
438 warn("open: %s", path);
442 if (ioctl(fd, cmd, cciop) < 0) {
455 warn("ioctl (%s): %s", cp, path);
462 #define KVM_ABORT(kd, str) { \
464 warnx("%s", (str)); \
465 warnx("%s", kvm_geterr((kd))); \
470 dump_ccd(int argc, char **argv)
472 char errbuf[_POSIX2_LINE_MAX], *ccd, *cp;
473 struct ccd_softc *cs, *kcs;
475 int i = 0, error, numccd, numconfiged = 0;
478 bzero(errbuf, sizeof(errbuf));
480 if ((kd = kvm_openfiles(kernel, core, NULL, O_RDONLY,
482 warnx("can't open kvm: %s", errbuf);
486 if (kvm_nlist(kd, nl))
487 KVM_ABORT(kd, "ccd-related symbols not available");
489 /* Check to see how many ccds are currently configured. */
490 if (kvm_read(kd, nl[SYM_NUMCCD].n_value, (char *)&numccd,
491 sizeof(numccd)) != sizeof(numccd))
492 KVM_ABORT(kd, "can't determine number of configured ccds");
495 printf("ccd driver in kernel, but is uninitialized\n");
499 /* Allocate space for the configuration data. */
500 readsize = numccd * sizeof(struct ccd_softc);
501 if ((cs = malloc(readsize)) == NULL) {
502 warnx("no memory for configuration data");
508 * Read the ccd configuration data from the kernel and dump
511 if (kvm_read(kd, nl[SYM_CCDSOFTC].n_value, (char *)&kcs,
512 sizeof(kcs)) != sizeof(kcs)) {
514 KVM_ABORT(kd, "can't find pointer to configuration data");
516 if (kvm_read(kd, (u_long)kcs, (char *)cs, readsize) != readsize) {
518 KVM_ABORT(kd, "can't read configuration data");
522 for (i = 0; i < numccd; ++i)
523 if (cs[i].sc_flags & CCDF_INITED) {
525 print_ccd_info(&cs[i], kd);
528 if (numconfiged == 0)
529 printf("no concatenated disks configured\n");
532 cp = *argv++; --argc;
533 if ((ccd = resolve_ccdname(cp)) == NULL) {
534 warnx("invalid ccd name: %s", cp);
537 if ((error = pathtounit(ccd, &i)) != 0) {
538 warnx("%s: %s", ccd, strerror(error));
542 warnx("ccd%d not configured", i);
545 if (cs[i].sc_flags & CCDF_INITED)
546 print_ccd_info(&cs[i], kd);
548 printf("ccd%d not configured\n", i);
564 print_ccd_info(struct ccd_softc *cs, kvm_t *kd)
566 static int header_printed = 0;
567 struct ccdcinfo *cip;
569 char path[MAXPATHLEN];
572 if (header_printed == 0 && verbose) {
573 printf("# ccd\t\tileave\tflags\tcompnent devices\n");
577 readsize = cs->sc_nccdisks * sizeof(struct ccdcinfo);
578 if ((cip = malloc(readsize)) == NULL) {
579 warn("ccd%d: can't allocate memory for component info",
583 bzero(cip, readsize);
585 /* Dump out softc information. */
586 printf("ccd%d\t\t%d\t%d\t", cs->sc_unit, cs->sc_ileave,
587 cs->sc_cflags & CCDF_USERMASK);
590 /* Read in the component info. */
591 if (kvm_read(kd, (u_long)cs->sc_cinfo, (char *)cip,
592 readsize) != readsize) {
594 warnx("can't read component info");
595 warnx("%s", kvm_geterr(kd));
599 /* Read component pathname and display component info. */
600 for (i = 0; i < cs->sc_nccdisks; ++i) {
601 if ((unsigned)kvm_read(kd, (u_long)cip[i].ci_path, (char *)path,
602 cip[i].ci_pathlen) != cip[i].ci_pathlen) {
604 warnx("can't read component pathname");
605 warnx("%s", kvm_geterr(kd));
608 printf((i + 1 < cs->sc_nccdisks) ? "%s " : "%s\n", path);
617 getmaxpartitions(void)
619 return (MAXPARTITIONS);
623 flags_to_val(char *flags)
626 int i, tmp, val = ~CCDF_USERMASK;
630 * The most common case is that of NIL flags, so check for
633 if (strcmp("none", flags) == 0 || strcmp("0x0", flags) == 0 ||
634 strcmp("0", flags) == 0)
637 flagslen = strlen(flags);
639 /* Check for values represented by strings. */
640 if ((cp = strdup(flags)) == NULL)
641 err(1, "no memory to parse flags");
643 for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) {
644 for (i = 0; flagvaltab[i].fv_flag != NULL; ++i)
645 if (strcmp(tok, flagvaltab[i].fv_flag) == 0)
647 if (flagvaltab[i].fv_flag == NULL) {
651 tmp |= flagvaltab[i].fv_val;
654 /* If we get here, the string was ok. */
661 /* Check for values represented in hex. */
662 if (flagslen > 2 && flags[0] == '0' && flags[1] == 'x') {
663 errno = 0; /* to check for ERANGE */
664 val = (int)strtol(&flags[2], &cp, 16);
665 if ((errno == ERANGE) || (*cp != '\0'))
670 /* Check for values represented in decimal. */
671 errno = 0; /* to check for ERANGE */
672 val = (int)strtol(flags, &cp, 10);
673 if ((errno == ERANGE) || (*cp != '\0'))
677 return (((val & ~CCDF_USERMASK) == 0) ? val : -1);
683 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
684 "usage: ccdconfig [-cv] ccd ileave [flags] dev ...",
685 " ccdconfig -C [-v] [-f config_file]",
686 " ccdconfig -u [-v] ccd ...",
687 " ccdconfig -U [-v] [-f config_file]",
688 " ccdconfig -g [-M core] [-N system] [ccd ...]");