2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
23 #include <sys/types.h>
25 #include <sys/mount.h>
31 #include <libubox/list.h>
32 #include <libubox/vlist.h>
33 #include <libubox/blobmsg_json.h>
34 #include <libubox/avl-cmp.h>
36 #include "libblkid-tiny/libblkid-tiny.h"
44 struct vlist_node node;
60 static struct vlist_tree mounts;
61 static struct blob_buf b;
62 static LIST_HEAD(devices);
63 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
64 static unsigned int delay_root;
76 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
77 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
78 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
79 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
80 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
81 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
82 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
95 static const struct uci_blob_param_list config_attr_list = {
96 .n_params = __CFG_MAX,
97 .params = config_policy,
100 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
101 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
102 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
103 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
104 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
105 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
106 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
109 static const struct uci_blob_param_list mount_attr_list = {
110 .n_params = __MOUNT_MAX,
111 .params = mount_policy,
122 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
123 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
124 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
125 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
126 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
129 static const struct uci_blob_param_list swap_attr_list = {
130 .n_params = __SWAP_MAX,
131 .params = swap_policy,
140 # define MS_DIRSYNC (1 << 7)
144 # define MS_RELATIME (1 << 21)
147 #ifndef MS_STRICTATIME
148 # define MS_STRICTATIME (1 << 24)
151 static const struct mount_flag mount_flags[] = {
152 { "sync", MS_SYNCHRONOUS },
153 { "async", ~MS_SYNCHRONOUS },
154 { "dirsync", MS_DIRSYNC },
155 { "mand", MS_MANDLOCK },
156 { "nomand", ~MS_MANDLOCK },
157 { "atime", ~MS_NOATIME },
158 { "noatime", MS_NOATIME },
159 { "dev", ~MS_NODEV },
160 { "nodev", MS_NODEV },
161 { "diratime", ~MS_NODIRATIME },
162 { "nodiratime", MS_NODIRATIME },
163 { "exec", ~MS_NOEXEC },
164 { "noexec", MS_NOEXEC },
165 { "suid", ~MS_NOSUID },
166 { "nosuid", MS_NOSUID },
167 { "rw", ~MS_RDONLY },
169 { "relatime", MS_RELATIME },
170 { "norelatime", ~MS_RELATIME },
171 { "strictatime", MS_STRICTATIME },
174 static char *blobmsg_get_strdup(struct blob_attr *attr)
179 return strdup(blobmsg_get_string(attr));
182 static char *blobmsg_get_basename(struct blob_attr *attr)
187 return strdup(basename(blobmsg_get_string(attr)));
190 static void parse_mount_options(struct mount *m, char *optstr)
194 char *p, *opts, *last;
199 if (!optstr || !*optstr)
202 m->options = opts = calloc(1, strlen(optstr) + 1);
215 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
216 if (!strcmp(last, mount_flags[i].name)) {
217 if (mount_flags[i].flag < 0)
218 m->flags &= (uint32_t)mount_flags[i].flag;
220 m->flags |= (uint32_t)mount_flags[i].flag;
227 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
236 static int mount_add(struct uci_section *s)
238 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
241 blob_buf_init(&b, 0);
242 uci_to_blob(&b, s, &mount_attr_list);
243 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
245 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
248 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
251 m = malloc(sizeof(struct mount));
252 m->type = TYPE_MOUNT;
253 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
254 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
255 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
256 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
258 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
260 m->overlay = m->extroot = 0;
261 if (m->target && !strcmp(m->target, "/"))
263 if (m->target && !strcmp(m->target, "/overlay"))
264 m->extroot = m->overlay = 1;
267 vlist_add(&mounts, &m->node, m->uuid);
269 vlist_add(&mounts, &m->node, m->label);
271 vlist_add(&mounts, &m->node, m->device);
276 static int swap_add(struct uci_section *s)
278 struct blob_attr *tb[__SWAP_MAX] = { 0 };
281 blob_buf_init(&b, 0);
282 uci_to_blob(&b, s, &swap_attr_list);
283 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
285 if (!tb[SWAP_UUID] && !tb[SWAP_DEVICE])
288 m = malloc(sizeof(struct mount));
289 memset(m, 0, sizeof(struct mount));
291 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
292 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
294 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
296 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
298 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
299 /* store complete swap path */
301 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
302 vlist_add(&mounts, &m->node, (m->uuid) ? (m->uuid) : (m->device));
308 static int global_add(struct uci_section *s)
310 struct blob_attr *tb[__CFG_MAX] = { 0 };
312 blob_buf_init(&b, 0);
313 uci_to_blob(&b, s, &config_attr_list);
314 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
316 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
318 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
321 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
323 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
326 if (tb[CFG_DELAY_ROOT])
327 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
329 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
335 static struct mount* find_swap(const char *uuid, const char *device)
339 vlist_for_each_element(&mounts, m, node) {
340 if (m->type != TYPE_SWAP)
342 if (uuid && m->uuid && !strcmp(m->uuid, uuid))
344 if (device && m->device && !strcmp(m->device, device))
351 static struct mount* find_block(const char *uuid, const char *label, const char *device,
356 vlist_for_each_element(&mounts, m, node) {
357 if (m->type != TYPE_MOUNT)
359 if (m->uuid && uuid && !strcmp(m->uuid, uuid))
361 if (m->label && label && !strcmp(m->label, label))
363 if (m->target && target && !strcmp(m->target, target))
365 if (m->device && device && !strcmp(m->device, device))
372 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
373 struct vlist_node *node_old)
377 static int config_load(char *cfg)
379 struct uci_context *ctx;
380 struct uci_package *pkg;
381 struct uci_element *e;
383 vlist_init(&mounts, avl_strcmp, mounts_update);
385 ctx = uci_alloc_context();
388 snprintf(path, 32, "%s/etc/config", cfg);
389 uci_set_confdir(ctx, path);
392 if (uci_load(ctx, "fstab", &pkg))
395 vlist_update(&mounts);
396 uci_foreach_element(&pkg->sections, e) {
397 struct uci_section *s = uci_to_section(e);
399 if (!strcmp(s->type, "mount"))
401 if (!strcmp(s->type, "swap"))
403 if (!strcmp(s->type, "global"))
406 vlist_flush(&mounts);
411 static struct blkid_struct_probe* _probe_path(char *path)
413 struct blkid_struct_probe *pr;
415 pr = malloc(sizeof(*pr));
420 memset(pr, 0, sizeof(*pr));
421 probe_block(path, pr);
423 if (pr->err || !pr->id) {
431 static int _cache_load(const char *path)
433 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
437 if (glob(path, gl_flags, NULL, &gl) < 0)
440 for (j = 0; j < gl.gl_pathc; j++) {
441 struct blkid_struct_probe *pr = _probe_path(gl.gl_pathv[j]);
443 list_add_tail(&pr->list, &devices);
451 static void cache_load(int mtd)
454 _cache_load("/dev/mtdblock*");
455 _cache_load("/dev/mmcblk*");
456 _cache_load("/dev/sd*");
457 _cache_load("/dev/sdc*");
458 _cache_load("/dev/hd*");
459 _cache_load("/dev/md*");
460 _cache_load("/dev/mapper/*");
463 static int print_block_info(struct blkid_struct_probe *pr)
465 printf("%s:", pr->dev);
467 printf(" UUID=\"%s\"", pr->uuid);
470 printf(" LABEL=\"%s\"", pr->label);
473 printf(" NAME=\"%s\"", pr->name);
476 printf(" VERSION=\"%s\"", pr->version);
478 printf(" TYPE=\"%s\"\n", pr->id->name);
483 static int print_block_uci(struct blkid_struct_probe *pr)
485 if (!strcmp(pr->id->name, "swap")) {
486 printf("config 'swap'\n");
488 printf("config 'mount'\n");
489 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
492 printf("\toption\tuuid\t'%s'\n", pr->uuid);
494 printf("\toption\tdevice\t'%s'\n", pr->dev);
495 printf("\toption\tenabled\t'0'\n\n");
500 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
502 struct blkid_struct_probe *pr = NULL;
505 list_for_each_entry(pr, &devices, list)
506 if (!strcmp(pr->uuid, uuid))
510 list_for_each_entry(pr, &devices, list)
511 if (strcmp(pr->label, label))
515 list_for_each_entry(pr, &devices, list)
516 if (!strcmp(pr->dev, path))
522 static char* find_mount_point(char *block)
524 FILE *fp = fopen("/proc/mounts", "r");
525 static char line[256];
526 int len = strlen(block);
532 while (fgets(line, sizeof(line), fp)) {
533 if (!strncmp(line, block, len)) {
534 char *p = &line[len + 1];
535 char *t = strstr(p, " ");
550 static void mkdir_p(char *dir)
552 char *l = strrchr(dir, '/');
562 static void check_filesystem(struct blkid_struct_probe *pr)
566 char *e2fsck = "/usr/sbin/e2fsck";
568 if (strncmp(pr->id->name, "ext", 3)) {
569 fprintf(stderr, "check_filesystem: %s is not supported\n", pr->id->name);
573 if (stat(e2fsck, &statbuf) < 0) {
574 fprintf(stderr, "check_filesystem: %s not found\n", e2fsck);
580 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
582 } else if (pid > 0) {
585 waitpid(pid, &status, 0);
586 if (WEXITSTATUS(status))
587 fprintf(stderr, "check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
591 static void handle_swapfiles(bool on)
595 struct blkid_struct_probe *pr;
597 vlist_for_each_element(&mounts, m, node)
599 if (m->type != TYPE_SWAP || !m->target)
602 fprintf(stderr, "swapfile: %s\n", m->target);
604 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
607 pr = _probe_path(m->target);
612 fprintf(stderr, "probe: %p\n", pr);
614 if (!strcmp(pr->id->name, "swap")) {
616 swapon(pr->dev, m->prio);
625 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
633 device = basename(pr->dev);
635 if (!strcmp(pr->id->name, "swap")) {
636 if (hotplug && !auto_swap)
638 m = find_swap(pr->uuid, device);
640 swapon(pr->dev, (m) ? (m->prio) : (0));
645 if (hotplug && !auto_mount)
648 if (find_mount_point(pr->dev)) {
649 fprintf(stderr, "%s is already mounted\n", pr->dev);
653 m = find_block(pr->uuid, pr->label, device, NULL);
658 char *target = m->target;
663 snprintf(_target, sizeof(_target), "/mnt/%s", device);
669 check_filesystem(pr);
671 err = mount(pr->dev, target, pr->id->name, m->flags,
672 (m->options) ? (m->options) : (""));
674 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
675 pr->dev, pr->id->name, target, err, strerror(err));
677 handle_swapfiles(true);
682 char target[] = "/mnt/mmcblk123";
685 snprintf(target, sizeof(target), "/mnt/%s", device);
689 check_filesystem(pr);
691 err = mount(pr->dev, target, pr->id->name, 0, "");
693 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
694 pr->dev, pr->id->name, target, err, strerror(err));
696 handle_swapfiles(true);
703 static int umount_device(struct blkid_struct_probe *pr)
706 char *device = basename(pr->dev);
713 if (!strcmp(pr->id->name, "swap"))
716 mp = find_mount_point(pr->dev);
720 m = find_block(pr->uuid, pr->label, device, NULL);
724 err = umount2(mp, MNT_DETACH);
726 fprintf(stderr, "unmounting %s (%s) failed (%d) - %s\n",
727 pr->dev, mp, err, strerror(err));
729 fprintf(stderr, "unmounted %s (%s)\n",
735 static int main_hotplug(int argc, char **argv)
738 char *action, *device, *mount_point;
740 action = getenv("ACTION");
741 device = getenv("DEVNAME");
743 if (!action || !device)
745 snprintf(path, sizeof(path), "/dev/%s", device);
747 if (!strcmp(action, "remove")) {
749 mount_point = find_mount_point(path);
751 err = umount2(mount_point, MNT_DETACH);
754 fprintf(stderr, "umount of %s failed (%d) - %s\n",
755 mount_point, err, strerror(err));
758 } else if (strcmp(action, "add")) {
759 fprintf(stderr, "Unkown action %s\n", action);
764 if (config_load(NULL))
768 return mount_device(find_block_info(NULL, NULL, path), 1);
771 static int find_block_mtd(char *name, char *part, int plen)
773 FILE *fp = fopen("/proc/mtd", "r");
774 static char line[256];
780 while (!index && fgets(line, sizeof(line), fp)) {
781 if (strstr(line, name)) {
782 char *eol = strstr(line, ":");
797 snprintf(part, plen, "/dev/mtdblock%s", index);
802 static int check_extroot(char *path)
804 struct blkid_struct_probe *pr = NULL;
807 if (find_block_mtd("rootfs", fs, sizeof(fs)))
810 list_for_each_entry(pr, &devices, list) {
811 if (!strcmp(pr->dev, fs)) {
815 char uuid[64] = { 0 };
817 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
819 fp = fopen(tag, "w+");
821 fprintf(stderr, "extroot: failed to write uuid tag file\n");
822 /* return 0 to continue boot regardless of error */
830 fp = fopen(tag, "r");
832 fprintf(stderr, "extroot: failed to open uuid tag file\n");
836 fgets(uuid, sizeof(uuid), fp);
838 if (!strcmp(uuid, pr->uuid))
840 fprintf(stderr, "extroot: uuid tag does not match rom uuid\n");
846 static int mount_extroot(char *cfg)
848 char overlay[] = "/tmp/extroot/overlay";
849 char mnt[] = "/tmp/extroot/mnt";
851 struct blkid_struct_probe *pr;
855 if (config_load(cfg))
858 m = find_block(NULL, NULL, NULL, "/");
860 m = find_block(NULL, NULL, NULL, "/overlay");
862 if (!m || !m->extroot)
865 pr = find_block_info(m->uuid, m->label, NULL);
867 if (!pr && delay_root){
868 fprintf(stderr, "extroot: is not ready yet, retrying in %u seconds\n", delay_root);
872 pr = find_block_info(m->uuid, m->label, NULL);
875 if (strncmp(pr->id->name, "ext", 3)) {
876 fprintf(stderr, "extroot: %s is not supported, try ext4\n", pr->id->name);
884 check_filesystem(pr);
886 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
889 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
890 pr->dev, pr->id->name, path, err, strerror(err));
891 } else if (m->overlay) {
892 err = check_extroot(path);
901 static int main_extroot(int argc, char **argv)
903 struct blkid_struct_probe *pr;
905 char fs_data[32] = { 0 };
908 if (!getenv("PREINIT"))
912 fprintf(stderr, "Usage: block extroot mountpoint\n");
919 find_block_mtd("rootfs", fs, sizeof(fs));
923 pr = find_block_info(NULL, NULL, fs);
927 find_block_mtd("rootfs_data", fs_data, sizeof(fs_data));
929 pr = find_block_info(NULL, NULL, fs_data);
930 if (pr && !strcmp(pr->id->name, "jffs2")) {
931 char cfg[] = "/tmp/jffs_cfg";
934 if (!mount(fs_data, cfg, "jffs2", MS_NOATIME, NULL)) {
935 err = mount_extroot(cfg);
936 umount2(cfg, MNT_DETACH);
939 rmdir("/tmp/overlay");
945 return mount_extroot(NULL);
948 static int main_mount(int argc, char **argv)
950 struct blkid_struct_probe *pr;
952 if (config_load(NULL))
956 list_for_each_entry(pr, &devices, list)
962 static int main_umount(int argc, char **argv)
964 struct blkid_struct_probe *pr;
966 if (config_load(NULL))
969 handle_swapfiles(false);
972 list_for_each_entry(pr, &devices, list)
978 static int main_detect(int argc, char **argv)
980 struct blkid_struct_probe *pr;
983 printf("config 'global'\n");
984 printf("\toption\tanon_swap\t'0'\n");
985 printf("\toption\tanon_mount\t'0'\n");
986 printf("\toption\tauto_swap\t'1'\n");
987 printf("\toption\tauto_mount\t'1'\n");
988 printf("\toption\tdelay_root\t'5'\n");
989 printf("\toption\tcheck_fs\t'0'\n\n");
990 list_for_each_entry(pr, &devices, list)
996 static int main_info(int argc, char **argv)
999 struct blkid_struct_probe *pr;
1003 list_for_each_entry(pr, &devices, list)
1004 print_block_info(pr);
1009 for (i = 2; i < argc; i++) {
1012 if (stat(argv[i], &s)) {
1013 fprintf(stderr, "failed to stat %s\n", argv[i]);
1016 if (!S_ISBLK(s.st_mode)) {
1017 fprintf(stderr, "%s is not a block device\n", argv[i]);
1020 pr = find_block_info(NULL, NULL, argv[i]);
1022 print_block_info(pr);
1028 static int main_swapon(int argc, char **argv)
1031 fprintf(stderr, "Usage: swapon <-s> <-a> [DEVICE]\n\n\tStart swapping on [DEVICE]\n -a\tStart swapping on all swap devices\n -s\tShow summary\n");
1035 if (!strcmp(argv[1], "-s")) {
1036 FILE *fp = fopen("/proc/swaps", "r");
1037 char *lineptr = NULL;
1041 fprintf(stderr, "failed to open /proc/swaps\n");
1044 while (getline(&lineptr, &s, fp) > 0)
1049 } else if (!strcmp(argv[1], "-a")) {
1050 struct blkid_struct_probe *pr;
1053 list_for_each_entry(pr, &devices, list) {
1054 if (strcmp(pr->id->name, "swap"))
1056 if (swapon(pr->dev, 0))
1057 fprintf(stderr, "failed to swapon %s\n", pr->dev);
1063 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1064 fprintf(stderr, "%s is not a block device or file\n", argv[1]);
1067 err = swapon(argv[1], 0);
1069 fprintf(stderr, "failed to swapon %s (%d)\n", argv[1], err);
1077 static int main_swapoff(int argc, char **argv)
1080 fprintf(stderr, "Usage: swapoff [-a] [DEVICE]\n\n\tStop swapping on DEVICE\n -a\tStop swapping on all swap devices\n");
1084 if (!strcmp(argv[1], "-a")) {
1085 FILE *fp = fopen("/proc/swaps", "r");
1089 fprintf(stderr, "failed to open /proc/swaps\n");
1092 fgets(line, sizeof(line), fp);
1093 while (fgets(line, sizeof(line), fp)) {
1094 char *end = strchr(line, ' ');
1100 err = swapoff(line);
1102 fprintf(stderr, "failed to swapoff %s (%d)\n", line, err);
1109 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1110 fprintf(stderr, "%s is not a block device or file\n", argv[1]);
1113 err = swapoff(argv[1]);
1115 fprintf(stderr, "fsiled to swapoff %s (%d)\n", argv[1], err);
1123 int main(int argc, char **argv)
1125 char *base = basename(*argv);
1129 if (!strcmp(base, "swapon"))
1130 return main_swapon(argc, argv);
1132 if (!strcmp(base, "swapoff"))
1133 return main_swapoff(argc, argv);
1135 if ((argc > 1) && !strcmp(base, "block")) {
1136 if (!strcmp(argv[1], "info"))
1137 return main_info(argc, argv);
1139 if (!strcmp(argv[1], "detect"))
1140 return main_detect(argc, argv);
1142 if (!strcmp(argv[1], "hotplug"))
1143 return main_hotplug(argc, argv);
1145 if (!strcmp(argv[1], "extroot"))
1146 return main_extroot(argc, argv);
1148 if (!strcmp(argv[1], "mount"))
1149 return main_mount(argc, argv);
1151 if (!strcmp(argv[1], "umount"))
1152 return main_umount(argc, argv);
1155 fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");