2 * Copyright (c) 2007, 2008 Marcel Moolenaar
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
47 #include "core/geom.h"
48 #include "misc/subr.h"
50 #ifdef STATIC_GEOM_CLASSES
51 #define PUBSYM(x) gpart_##x
56 uint32_t PUBSYM(lib_version) = G_LIB_VERSION;
57 uint32_t PUBSYM(version) = 0;
59 static char autofill[] = "*";
60 static char optional[] = "";
61 static char flags[] = "C";
63 static const char const bootcode_param[] = "bootcode";
64 static const char const index_param[] = "index";
65 static const char const partcode_param[] = "partcode";
67 static struct gclass *find_class(struct gmesh *, const char *);
68 static struct ggeom * find_geom(struct gclass *, const char *);
69 static const char *find_geomcfg(struct ggeom *, const char *);
70 static const char *find_provcfg(struct gprovider *, const char *);
71 static struct gprovider *find_provider(struct ggeom *,
73 static const char *fmtsize(int64_t);
74 static int gpart_autofill(struct gctl_req *);
75 static void gpart_bootcode(struct gctl_req *, unsigned int);
76 static void *gpart_bootfile_read(const char *, ssize_t *);
77 static void gpart_issue(struct gctl_req *, unsigned int);
78 static void gpart_show(struct gctl_req *, unsigned int);
79 static void gpart_show_geom(struct ggeom *, const char *);
80 static int gpart_show_hasopt(struct gctl_req *, const char *, const char *);
81 static void gpart_write_partcode(struct ggeom *, int, void *, ssize_t);
82 static void gpart_write_partcode_vtoc8(struct ggeom *, int, void *);
84 struct g_command PUBSYM(class_commands)[] = {
85 { "add", 0, gpart_issue, {
86 { 'b', "start", autofill, G_TYPE_ASCLBA },
87 { 's', "size", autofill, G_TYPE_ASCLBA },
88 { 't', "type", NULL, G_TYPE_STRING },
89 { 'i', index_param, optional, G_TYPE_ASCNUM },
90 { 'l', "label", optional, G_TYPE_STRING },
91 { 'f', "flags", flags, G_TYPE_STRING },
95 { "bootcode", 0, gpart_bootcode, {
96 { 'b', bootcode_param, optional, G_TYPE_STRING },
97 { 'p', partcode_param, optional, G_TYPE_STRING },
98 { 'i', index_param, optional, G_TYPE_ASCNUM },
99 { 'f', "flags", flags, G_TYPE_STRING },
103 { "commit", 0, gpart_issue, G_NULL_OPTS, "geom", NULL },
104 { "create", 0, gpart_issue, {
105 { 's', "scheme", NULL, G_TYPE_STRING },
106 { 'n', "entries", optional, G_TYPE_ASCNUM },
107 { 'f', "flags", flags, G_TYPE_STRING },
111 { "delete", 0, gpart_issue, {
112 { 'i', index_param, NULL, G_TYPE_ASCNUM },
113 { 'f', "flags", flags, G_TYPE_STRING },
117 { "destroy", 0, gpart_issue, {
118 { 'f', "flags", flags, G_TYPE_STRING },
121 { "modify", 0, gpart_issue, {
122 { 'i', index_param, NULL, G_TYPE_ASCNUM },
123 { 'l', "label", optional, G_TYPE_STRING },
124 { 't', "type", optional, G_TYPE_STRING },
125 { 'f', "flags", flags, G_TYPE_STRING },
129 { "set", 0, gpart_issue, {
130 { 'a', "attrib", NULL, G_TYPE_STRING },
131 { 'i', index_param, NULL, G_TYPE_ASCNUM },
132 { 'f', "flags", flags, G_TYPE_STRING },
136 { "show", 0, gpart_show, {
137 { 'l', "show_label", NULL, G_TYPE_BOOL },
138 { 'r', "show_rawtype", NULL, G_TYPE_BOOL },
140 NULL, "[-lr] [geom ...]"
142 { "undo", 0, gpart_issue, G_NULL_OPTS, "geom", NULL },
143 { "unset", 0, gpart_issue, {
144 { 'a', "attrib", NULL, G_TYPE_STRING },
145 { 'i', index_param, NULL, G_TYPE_ASCNUM },
146 { 'f', "flags", flags, G_TYPE_STRING },
153 static struct gclass *
154 find_class(struct gmesh *mesh, const char *name)
156 struct gclass *classp;
158 LIST_FOREACH(classp, &mesh->lg_class, lg_class) {
159 if (strcmp(classp->lg_name, name) == 0)
165 static struct ggeom *
166 find_geom(struct gclass *classp, const char *name)
170 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) {
171 if (strcmp(gp->lg_name, name) == 0)
178 find_geomcfg(struct ggeom *gp, const char *cfg)
182 LIST_FOREACH(gc, &gp->lg_config, lg_config) {
183 if (!strcmp(gc->lg_name, cfg))
190 find_provcfg(struct gprovider *pp, const char *cfg)
194 LIST_FOREACH(gc, &pp->lg_config, lg_config) {
195 if (!strcmp(gc->lg_name, cfg))
201 static struct gprovider *
202 find_provider(struct ggeom *gp, unsigned long long minsector)
204 struct gprovider *pp, *bestpp;
206 unsigned long long sector, bestsector;
209 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
210 s = find_provcfg(pp, "start");
212 s = find_provcfg(pp, "offset");
213 sector = atoll(s) / pp->lg_sectorsize;
217 if (sector < minsector)
219 if (bestpp != NULL && sector >= bestsector)
229 fmtsize(int64_t rawsz)
233 humanize_number(buf, sizeof(buf), rawsz, "", HN_AUTOSCALE,
234 HN_B | HN_NOSPACE | HN_DECIMAL);
239 fmtattrib(struct gprovider *pp)
241 static char buf[128];
247 LIST_FOREACH(gc, &pp->lg_config, lg_config) {
248 if (strcmp(gc->lg_name, "attrib") != 0)
250 idx += snprintf(buf + idx, sizeof(buf) - idx, "%s%s",
251 (idx == 0) ? " [" : ",", gc->lg_val);
254 snprintf(buf + idx, sizeof(buf) - idx, "] ");
259 gpart_autofill(struct gctl_req *req)
264 struct gprovider *pp;
265 unsigned long long first, last;
266 unsigned long long size, start;
267 unsigned long long lba, len, grade;
270 int error, has_size, has_start;
272 s = gctl_get_ascii(req, "verb");
273 if (strcmp(s, "add") != 0)
276 s = gctl_get_ascii(req, "size");
277 has_size = (*s == '*') ? 0 : 1;
278 size = (has_size) ? (unsigned long long)atoll(s) : 0ULL;
280 s = gctl_get_ascii(req, "start");
281 has_start = (*s == '*') ? 0 : 1;
282 start = (has_start) ? (unsigned long long)atoll(s) : ~0ULL;
284 /* No autofill necessary. */
285 if (has_size && has_start)
288 error = geom_gettree(&mesh);
291 s = gctl_get_ascii(req, "class");
294 cp = find_class(&mesh, s);
296 errx(EXIT_FAILURE, "Class %s not found.", s);
297 s = gctl_get_ascii(req, "geom");
300 gp = find_geom(cp, s);
302 errx(EXIT_FAILURE, "No such geom: %s.", s);
303 first = atoll(find_geomcfg(gp, "first"));
304 last = atoll(find_geomcfg(gp, "last"));
306 while ((pp = find_provider(gp, first)) != NULL) {
307 s = find_provcfg(pp, "start");
309 s = find_provcfg(pp, "offset");
310 lba = atoll(s) / pp->lg_sectorsize;
315 /* Free space [first, lba> */
318 if (len >= size && len - size < grade) {
322 } else if (has_start) {
323 if (start >= first && start < lba) {
325 grade = start - first;
328 if (grade == ~0ULL || len > size) {
336 s = find_provcfg(pp, "end");
338 s = find_provcfg(pp, "length");
339 first = lba + atoll(s) / pp->lg_sectorsize;
341 first = atoll(s) + 1;
344 /* Free space [first-last] */
345 len = last - first + 1;
347 if (len >= size && len - size < grade) {
351 } else if (has_start) {
352 if (start >= first && start <= last) {
353 size = last - start + 1;
354 grade = start - first;
357 if (grade == ~0ULL || len > size) {
369 asprintf(&val, "%llu", size);
372 gctl_change_param(req, "size", -1, val);
375 asprintf(&val, "%llu", start);
378 gctl_change_param(req, "start", -1, val);
384 gpart_show_geom(struct ggeom *gp, const char *element)
386 struct gprovider *pp;
387 const char *s, *scheme;
388 unsigned long long first, last, sector, end;
389 unsigned long long length, secsz;
390 int idx, wblocks, wname;
392 scheme = find_geomcfg(gp, "scheme");
393 s = find_geomcfg(gp, "first");
395 s = find_geomcfg(gp, "last");
398 wname = strlen(gp->lg_name);
399 pp = LIST_FIRST(&gp->lg_consumer)->lg_provider;
400 secsz = pp->lg_sectorsize;
401 printf("=>%*llu %*llu %*s %s (%s)\n",
402 wblocks, first, wblocks, (last - first + 1),
404 scheme, fmtsize(pp->lg_mediasize));
406 while ((pp = find_provider(gp, first)) != NULL) {
407 s = find_provcfg(pp, "start");
409 s = find_provcfg(pp, "offset");
410 sector = atoll(s) / secsz;
414 s = find_provcfg(pp, "end");
416 s = find_provcfg(pp, "length");
417 length = atoll(s) / secsz;
418 end = sector + length - 1;
421 length = end - sector + 1;
423 s = find_provcfg(pp, "index");
425 if (first < sector) {
426 printf(" %*llu %*llu %*s - free - (%s)\n",
427 wblocks, first, wblocks, sector - first,
429 fmtsize((sector - first) * secsz));
431 printf(" %*llu %*llu %*d %s %s (%s)\n",
432 wblocks, sector, wblocks, length,
433 wname, idx, find_provcfg(pp, element),
434 fmtattrib(pp), fmtsize(pp->lg_mediasize));
438 length = last - first + 1;
439 printf(" %*llu %*llu %*s - free - (%s)\n",
440 wblocks, first, wblocks, length,
442 fmtsize(length * secsz));
448 gpart_show_hasopt(struct gctl_req *req, const char *opt, const char *elt)
451 if (!gctl_get_int(req, opt))
455 errx(EXIT_FAILURE, "-l and -r are mutually exclusive");
461 gpart_show(struct gctl_req *req, unsigned int fl __unused)
464 struct gclass *classp;
466 const char *element, *name;
470 if (gpart_show_hasopt(req, "show_label", element))
472 if (gpart_show_hasopt(req, "show_rawtype", element))
477 name = gctl_get_ascii(req, "class");
480 error = geom_gettree(&mesh);
482 errc(EXIT_FAILURE, error, "Cannot get GEOM tree");
483 classp = find_class(&mesh, name);
484 if (classp == NULL) {
485 geom_deletetree(&mesh);
486 errx(EXIT_FAILURE, "Class %s not found.", name);
488 nargs = gctl_get_int(req, "nargs");
490 for (i = 0; i < nargs; i++) {
491 name = gctl_get_ascii(req, "arg%d", i);
492 gp = find_geom(classp, name);
494 gpart_show_geom(gp, element);
496 errx(EXIT_FAILURE, "No such geom: %s.", name);
499 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) {
500 gpart_show_geom(gp, element);
503 geom_deletetree(&mesh);
507 gpart_bootfile_read(const char *bootfile, ssize_t *size)
513 if (stat(bootfile, &sb) == -1)
514 err(EXIT_FAILURE, "%s", bootfile);
515 if (!S_ISREG(sb.st_mode))
516 errx(EXIT_FAILURE, "%s: not a regular file", bootfile);
518 errx(EXIT_FAILURE, "%s: empty file", bootfile);
519 if (*size > 0 && sb.st_size > *size)
520 errx(EXIT_FAILURE, "%s: file too big (%zu limit)", bootfile,
525 fd = open(bootfile, O_RDONLY);
527 err(EXIT_FAILURE, "%s", bootfile);
528 code = malloc(*size);
530 err(EXIT_FAILURE, NULL);
531 if (read(fd, code, *size) != *size)
532 err(EXIT_FAILURE, "%s", bootfile);
539 gpart_write_partcode(struct ggeom *gp, int idx, void *code, ssize_t size)
542 struct gprovider *pp;
548 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
549 s = find_provcfg(pp, "index");
557 snprintf(dsf, sizeof(dsf), "/dev/%s", pp->lg_name);
558 fd = open(dsf, O_WRONLY);
560 err(EXIT_FAILURE, "%s", dsf);
561 if (lseek(fd, size, SEEK_SET) != size)
562 errx(EXIT_FAILURE, "%s: not enough space", dsf);
563 if (lseek(fd, 0, SEEK_SET) != 0)
564 err(EXIT_FAILURE, "%s", dsf);
567 * When writing to a disk device, the write must be
568 * sector aligned and not write to any partial sectors,
569 * so round up the buffer size to the next sector and zero it.
571 bsize = (size + pp->lg_sectorsize - 1) /
572 pp->lg_sectorsize * pp->lg_sectorsize;
573 buf = calloc(1, bsize);
575 err(EXIT_FAILURE, "%s", dsf);
576 bcopy(code, buf, size);
577 if (write(fd, buf, bsize) != bsize)
578 err(EXIT_FAILURE, "%s", dsf);
582 errx(EXIT_FAILURE, "invalid partition index");
586 gpart_write_partcode_vtoc8(struct ggeom *gp, int idx, void *code)
589 struct gprovider *pp;
594 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
595 s = find_provcfg(pp, "index");
598 if (idx != 0 && atoi(s) != idx)
600 snprintf(dsf, sizeof(dsf), "/dev/%s", pp->lg_name);
601 if (pp->lg_sectorsize != sizeof(struct vtoc8))
602 errx(EXIT_FAILURE, "%s: unexpected sector "
603 "size (%d)\n", dsf, pp->lg_sectorsize);
604 fd = open(dsf, O_WRONLY);
606 err(EXIT_FAILURE, "%s", dsf);
607 if (lseek(fd, VTOC_BOOTSIZE, SEEK_SET) != VTOC_BOOTSIZE)
610 * We ignore the first VTOC_BOOTSIZE bytes of boot code in
611 * order to avoid overwriting the label.
613 if (lseek(fd, sizeof(struct vtoc8), SEEK_SET) !=
614 sizeof(struct vtoc8))
615 err(EXIT_FAILURE, "%s", dsf);
616 if (write(fd, (caddr_t)code + sizeof(struct vtoc8),
617 VTOC_BOOTSIZE - sizeof(struct vtoc8)) != VTOC_BOOTSIZE -
618 sizeof(struct vtoc8))
619 err(EXIT_FAILURE, "%s", dsf);
622 if (idx != 0 && atoi(s) == idx)
626 errx(EXIT_FAILURE, "%s: no partitions", gp->lg_name);
630 gpart_bootcode(struct gctl_req *req, unsigned int fl)
633 struct gclass *classp;
637 void *bootcode, *partcode;
638 size_t bootsize, partsize;
639 int error, idx, vtoc8;
641 if (gctl_has_param(req, bootcode_param)) {
642 s = gctl_get_ascii(req, bootcode_param);
643 bootsize = 800 * 1024; /* Arbitrary limit. */
644 bootcode = gpart_bootfile_read(s, &bootsize);
645 error = gctl_change_param(req, bootcode_param, bootsize,
648 errc(EXIT_FAILURE, error, "internal error");
654 s = gctl_get_ascii(req, "class");
657 error = geom_gettree(&mesh);
659 errc(EXIT_FAILURE, error, "Cannot get GEOM tree");
660 classp = find_class(&mesh, s);
661 if (classp == NULL) {
662 geom_deletetree(&mesh);
663 errx(EXIT_FAILURE, "Class %s not found.", s);
665 s = gctl_get_ascii(req, "geom");
668 gp = find_geom(classp, s);
670 errx(EXIT_FAILURE, "No such geom: %s.", s);
671 s = find_geomcfg(gp, "scheme");
673 if (strcmp(s, "VTOC8") == 0)
676 if (gctl_has_param(req, partcode_param)) {
677 s = gctl_get_ascii(req, partcode_param);
678 partsize = vtoc8 != 0 ? VTOC_BOOTSIZE : bootsize * 1024;
679 partcode = gpart_bootfile_read(s, &partsize);
680 error = gctl_delete_param(req, partcode_param);
682 errc(EXIT_FAILURE, error, "internal error");
688 if (gctl_has_param(req, index_param)) {
689 if (partcode == NULL)
690 errx(EXIT_FAILURE, "-i is only valid with -p");
691 s = gctl_get_ascii(req, index_param);
692 idx = strtol(s, &sp, 10);
693 if (idx < 1 || *s == '\0' || *sp != '\0')
694 errx(EXIT_FAILURE, "invalid partition index");
695 error = gctl_delete_param(req, index_param);
697 errc(EXIT_FAILURE, error, "internal error");
701 if (partcode != NULL) {
704 errx(EXIT_FAILURE, "missing -i option");
705 gpart_write_partcode(gp, idx, partcode, partsize);
707 gpart_write_partcode_vtoc8(gp, idx, partcode);
709 if (bootcode == NULL)
710 errx(EXIT_FAILURE, "no -b nor -p");
712 if (bootcode != NULL)
713 gpart_issue(req, fl);
715 geom_deletetree(&mesh);
719 gpart_issue(struct gctl_req *req, unsigned int fl __unused)
726 /* autofill parameters (if applicable). */
727 error = gpart_autofill(req);
729 warnc(error, "autofill");
730 status = EXIT_FAILURE;
734 bzero(buf, sizeof(buf));
735 gctl_rw_param(req, "output", sizeof(buf), buf);
736 errstr = gctl_issue(req);
737 if (errstr == NULL || errstr[0] == '\0') {
740 status = EXIT_SUCCESS;
744 error = strtol(errstr, &errmsg, 0);
745 if (errmsg != errstr) {
746 while (errmsg[0] == ' ')
748 if (errmsg[0] != '\0')
749 warnc(error, "%s", errmsg);
755 status = EXIT_FAILURE;