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.
24 #include <sys/types.h>
26 #include <sys/mount.h>
32 #include <libubox/list.h>
33 #include <libubox/vlist.h>
34 #include <libubox/blobmsg_json.h>
35 #include <libubox/avl-cmp.h>
37 #include "libblkid-tiny/libblkid-tiny.h"
45 struct vlist_node node;
61 static struct vlist_tree mounts;
62 static struct blob_buf b;
63 static LIST_HEAD(devices);
64 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
65 static unsigned int delay_root;
77 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
78 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
79 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
80 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
81 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
82 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
83 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
96 static const struct uci_blob_param_list config_attr_list = {
97 .n_params = __CFG_MAX,
98 .params = config_policy,
101 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
102 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
103 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
104 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
105 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
106 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
107 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
110 static const struct uci_blob_param_list mount_attr_list = {
111 .n_params = __MOUNT_MAX,
112 .params = mount_policy,
124 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
125 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
126 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
127 [SWAP_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
128 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
129 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
132 static const struct uci_blob_param_list swap_attr_list = {
133 .n_params = __SWAP_MAX,
134 .params = swap_policy,
143 # define MS_DIRSYNC (1 << 7)
147 # define MS_RELATIME (1 << 21)
150 #ifndef MS_STRICTATIME
151 # define MS_STRICTATIME (1 << 24)
154 static const struct mount_flag mount_flags[] = {
155 { "sync", MS_SYNCHRONOUS },
156 { "async", ~MS_SYNCHRONOUS },
157 { "dirsync", MS_DIRSYNC },
158 { "mand", MS_MANDLOCK },
159 { "nomand", ~MS_MANDLOCK },
160 { "atime", ~MS_NOATIME },
161 { "noatime", MS_NOATIME },
162 { "dev", ~MS_NODEV },
163 { "nodev", MS_NODEV },
164 { "diratime", ~MS_NODIRATIME },
165 { "nodiratime", MS_NODIRATIME },
166 { "exec", ~MS_NOEXEC },
167 { "noexec", MS_NOEXEC },
168 { "suid", ~MS_NOSUID },
169 { "nosuid", MS_NOSUID },
170 { "rw", ~MS_RDONLY },
172 { "relatime", MS_RELATIME },
173 { "norelatime", ~MS_RELATIME },
174 { "strictatime", MS_STRICTATIME },
177 static char *blobmsg_get_strdup(struct blob_attr *attr)
182 return strdup(blobmsg_get_string(attr));
185 static char *blobmsg_get_basename(struct blob_attr *attr)
190 return strdup(basename(blobmsg_get_string(attr)));
193 static void parse_mount_options(struct mount *m, char *optstr)
197 char *p, *opts, *last;
202 if (!optstr || !*optstr)
205 m->options = opts = calloc(1, strlen(optstr) + 1);
218 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
219 if (!strcmp(last, mount_flags[i].name)) {
220 if (mount_flags[i].flag < 0)
221 m->flags &= (uint32_t)mount_flags[i].flag;
223 m->flags |= (uint32_t)mount_flags[i].flag;
230 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
239 static int mount_add(struct uci_section *s)
241 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
244 blob_buf_init(&b, 0);
245 uci_to_blob(&b, s, &mount_attr_list);
246 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
248 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
251 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
254 m = malloc(sizeof(struct mount));
255 m->type = TYPE_MOUNT;
256 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
257 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
258 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
259 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
261 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
263 m->overlay = m->extroot = 0;
264 if (m->target && !strcmp(m->target, "/"))
266 if (m->target && !strcmp(m->target, "/overlay"))
267 m->extroot = m->overlay = 1;
270 vlist_add(&mounts, &m->node, m->uuid);
272 vlist_add(&mounts, &m->node, m->label);
274 vlist_add(&mounts, &m->node, m->device);
279 static int swap_add(struct uci_section *s)
281 struct blob_attr *tb[__SWAP_MAX] = { 0 };
284 blob_buf_init(&b, 0);
285 uci_to_blob(&b, s, &swap_attr_list);
286 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
288 if (!tb[SWAP_UUID] && !tb[SWAP_LABEL] && !tb[SWAP_DEVICE])
291 m = malloc(sizeof(struct mount));
292 memset(m, 0, sizeof(struct mount));
294 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
295 m->label = blobmsg_get_strdup(tb[SWAP_LABEL]);
296 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
298 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
300 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
302 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
303 /* store complete swap path */
305 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
308 vlist_add(&mounts, &m->node, m->uuid);
310 vlist_add(&mounts, &m->node, m->label);
312 vlist_add(&mounts, &m->node, m->device);
318 static int global_add(struct uci_section *s)
320 struct blob_attr *tb[__CFG_MAX] = { 0 };
322 blob_buf_init(&b, 0);
323 uci_to_blob(&b, s, &config_attr_list);
324 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
326 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
328 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
331 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
333 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
336 if (tb[CFG_DELAY_ROOT])
337 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
339 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
345 static struct mount* find_swap(const char *uuid, const char *label, const char *device)
349 vlist_for_each_element(&mounts, m, node) {
350 if (m->type != TYPE_SWAP)
352 if (uuid && m->uuid && !strcmp(m->uuid, uuid))
354 if (label && m->label && !strcmp(m->label, label))
356 if (device && m->device && !strcmp(m->device, device))
363 static struct mount* find_block(const char *uuid, const char *label, const char *device,
368 vlist_for_each_element(&mounts, m, node) {
369 if (m->type != TYPE_MOUNT)
371 if (m->uuid && uuid && !strcmp(m->uuid, uuid))
373 if (m->label && label && !strcmp(m->label, label))
375 if (m->target && target && !strcmp(m->target, target))
377 if (m->device && device && !strcmp(m->device, device))
384 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
385 struct vlist_node *node_old)
389 static int config_load(char *cfg)
391 struct uci_context *ctx;
392 struct uci_package *pkg;
393 struct uci_element *e;
395 vlist_init(&mounts, avl_strcmp, mounts_update);
397 ctx = uci_alloc_context();
400 snprintf(path, 32, "%s/etc/config", cfg);
401 uci_set_confdir(ctx, path);
404 if (uci_load(ctx, "fstab", &pkg))
407 vlist_update(&mounts);
408 uci_foreach_element(&pkg->sections, e) {
409 struct uci_section *s = uci_to_section(e);
411 if (!strcmp(s->type, "mount"))
413 if (!strcmp(s->type, "swap"))
415 if (!strcmp(s->type, "global"))
418 vlist_flush(&mounts);
423 static struct blkid_struct_probe* _probe_path(char *path)
425 struct blkid_struct_probe *pr;
427 pr = malloc(sizeof(*pr));
432 memset(pr, 0, sizeof(*pr));
433 probe_block(path, pr);
435 if (pr->err || !pr->id) {
443 static int _cache_load(const char *path)
445 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
449 if (glob(path, gl_flags, NULL, &gl) < 0)
452 for (j = 0; j < gl.gl_pathc; j++) {
453 struct blkid_struct_probe *pr = _probe_path(gl.gl_pathv[j]);
455 list_add_tail(&pr->list, &devices);
463 static void cache_load(int mtd)
466 _cache_load("/dev/mtdblock*");
467 _cache_load("/dev/mmcblk*");
468 _cache_load("/dev/sd*");
469 _cache_load("/dev/hd*");
470 _cache_load("/dev/md*");
471 _cache_load("/dev/mapper/*");
474 static int print_block_info(struct blkid_struct_probe *pr)
476 printf("%s:", pr->dev);
478 printf(" UUID=\"%s\"", pr->uuid);
481 printf(" LABEL=\"%s\"", pr->label);
484 printf(" NAME=\"%s\"", pr->name);
487 printf(" VERSION=\"%s\"", pr->version);
489 printf(" TYPE=\"%s\"\n", pr->id->name);
494 static int print_block_uci(struct blkid_struct_probe *pr)
496 if (!strcmp(pr->id->name, "swap")) {
497 printf("config 'swap'\n");
499 printf("config 'mount'\n");
500 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
503 printf("\toption\tuuid\t'%s'\n", pr->uuid);
505 printf("\toption\tdevice\t'%s'\n", pr->dev);
506 printf("\toption\tenabled\t'0'\n\n");
511 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
513 struct blkid_struct_probe *pr = NULL;
516 list_for_each_entry(pr, &devices, list)
517 if (!strcmp(pr->uuid, uuid))
521 list_for_each_entry(pr, &devices, list)
522 if (!strcmp(pr->label, label))
526 list_for_each_entry(pr, &devices, list)
527 if (!strcmp(basename(pr->dev), basename(path)))
533 static char* find_mount_point(char *block)
535 FILE *fp = fopen("/proc/mounts", "r");
536 static char line[256];
537 int len = strlen(block);
543 while (fgets(line, sizeof(line), fp)) {
544 if (!strncmp(line, block, len)) {
545 char *p = &line[len + 1];
546 char *t = strstr(p, " ");
563 static void mkdir_p(char *dir)
565 char *l = strrchr(dir, '/');
575 static void check_filesystem(struct blkid_struct_probe *pr)
579 char *e2fsck = "/usr/sbin/e2fsck";
581 if (strncmp(pr->id->name, "ext", 3)) {
582 fprintf(stderr, "check_filesystem: %s is not supported\n", pr->id->name);
586 if (stat(e2fsck, &statbuf) < 0) {
587 fprintf(stderr, "check_filesystem: %s not found\n", e2fsck);
593 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
595 } else if (pid > 0) {
598 waitpid(pid, &status, 0);
599 if (WEXITSTATUS(status))
600 fprintf(stderr, "check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
604 static void handle_swapfiles(bool on)
608 struct blkid_struct_probe *pr;
610 vlist_for_each_element(&mounts, m, node)
612 if (m->type != TYPE_SWAP || !m->target)
615 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
618 pr = _probe_path(m->target);
623 if (!strcmp(pr->id->name, "swap")) {
625 swapon(pr->dev, m->prio);
634 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
642 device = basename(pr->dev);
644 if (!strcmp(pr->id->name, "swap")) {
645 if (hotplug && !auto_swap)
647 m = find_swap(pr->uuid, pr->label, device);
649 swapon(pr->dev, (m) ? (m->prio) : (0));
654 if (hotplug && !auto_mount)
657 if (find_mount_point(pr->dev)) {
658 fprintf(stderr, "%s is already mounted\n", pr->dev);
662 m = find_block(pr->uuid, pr->label, device, NULL);
667 char *target = m->target;
672 snprintf(_target, sizeof(_target), "/mnt/%s", device);
678 check_filesystem(pr);
680 err = mount(pr->dev, target, pr->id->name, m->flags,
681 (m->options) ? (m->options) : (""));
683 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
684 pr->dev, pr->id->name, target, err, strerror(err));
686 handle_swapfiles(true);
691 char target[] = "/mnt/mmcblk123";
694 snprintf(target, sizeof(target), "/mnt/%s", device);
698 check_filesystem(pr);
700 err = mount(pr->dev, target, pr->id->name, 0, "");
702 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
703 pr->dev, pr->id->name, target, err, strerror(err));
705 handle_swapfiles(true);
712 static int umount_device(struct blkid_struct_probe *pr)
715 char *device = basename(pr->dev);
722 if (!strcmp(pr->id->name, "swap"))
725 mp = find_mount_point(pr->dev);
729 m = find_block(pr->uuid, pr->label, device, NULL);
733 err = umount2(mp, MNT_DETACH);
735 fprintf(stderr, "unmounting %s (%s) failed (%d) - %s\n",
736 pr->dev, mp, err, strerror(err));
738 fprintf(stderr, "unmounted %s (%s)\n",
744 static int main_hotplug(int argc, char **argv)
747 char *action, *device, *mount_point;
749 action = getenv("ACTION");
750 device = getenv("DEVNAME");
752 if (!action || !device)
754 snprintf(path, sizeof(path), "/dev/%s", device);
756 if (!strcmp(action, "remove")) {
758 mount_point = find_mount_point(path);
760 err = umount2(mount_point, MNT_DETACH);
763 fprintf(stderr, "umount of %s failed (%d) - %s\n",
764 mount_point, err, strerror(err));
767 } else if (strcmp(action, "add")) {
768 fprintf(stderr, "Unkown action %s\n", action);
773 if (config_load(NULL))
777 return mount_device(find_block_info(NULL, NULL, path), 1);
780 static int find_block_mtd(char *name, char *part, int plen)
782 FILE *fp = fopen("/proc/mtd", "r");
783 static char line[256];
789 while (!index && fgets(line, sizeof(line), fp)) {
790 if (strstr(line, name)) {
791 char *eol = strstr(line, ":");
806 snprintf(part, plen, "/dev/mtdblock%s", index);
811 static int check_extroot(char *path)
813 struct blkid_struct_probe *pr = NULL;
816 if (find_block_mtd("rootfs", fs, sizeof(fs)))
819 list_for_each_entry(pr, &devices, list) {
820 if (!strcmp(pr->dev, fs)) {
824 char uuid[64] = { 0 };
826 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
828 fp = fopen(tag, "w+");
830 fprintf(stderr, "extroot: failed to write uuid tag file\n");
831 /* return 0 to continue boot regardless of error */
839 fp = fopen(tag, "r");
841 fprintf(stderr, "extroot: failed to open uuid tag file\n");
845 fgets(uuid, sizeof(uuid), fp);
847 if (!strcmp(uuid, pr->uuid))
849 fprintf(stderr, "extroot: uuid tag does not match rom uuid\n");
855 static int mount_extroot(char *cfg)
857 char overlay[] = "/tmp/extroot/overlay";
858 char mnt[] = "/tmp/extroot/mnt";
860 struct blkid_struct_probe *pr;
864 if (config_load(cfg))
867 m = find_block(NULL, NULL, NULL, "/");
869 m = find_block(NULL, NULL, NULL, "/overlay");
871 if (!m || !m->extroot)
874 pr = find_block_info(m->uuid, m->label, m->device);
876 if (!pr && delay_root){
877 fprintf(stderr, "extroot: is not ready yet, retrying in %u seconds\n", delay_root);
881 pr = find_block_info(m->uuid, m->label, m->device);
884 if (strncmp(pr->id->name, "ext", 3)) {
885 fprintf(stderr, "extroot: %s is not supported, try ext4\n", pr->id->name);
893 check_filesystem(pr);
895 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
898 fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
899 pr->dev, pr->id->name, path, err, strerror(err));
900 } else if (m->overlay) {
901 err = check_extroot(path);
910 static int main_extroot(int argc, char **argv)
912 struct blkid_struct_probe *pr;
914 char fs_data[32] = { 0 };
917 if (!getenv("PREINIT"))
921 fprintf(stderr, "Usage: block extroot mountpoint\n");
928 find_block_mtd("rootfs", fs, sizeof(fs));
932 pr = find_block_info(NULL, NULL, fs);
936 find_block_mtd("rootfs_data", fs_data, sizeof(fs_data));
938 pr = find_block_info(NULL, NULL, fs_data);
939 if (pr && !strcmp(pr->id->name, "jffs2")) {
940 char cfg[] = "/tmp/jffs_cfg";
943 if (!mount(fs_data, cfg, "jffs2", MS_NOATIME, NULL)) {
944 err = mount_extroot(cfg);
945 umount2(cfg, MNT_DETACH);
948 rmdir("/tmp/overlay");
954 return mount_extroot(NULL);
957 static int main_mount(int argc, char **argv)
959 struct blkid_struct_probe *pr;
961 if (config_load(NULL))
965 list_for_each_entry(pr, &devices, list)
968 handle_swapfiles(true);
973 static int main_umount(int argc, char **argv)
975 struct blkid_struct_probe *pr;
977 if (config_load(NULL))
980 handle_swapfiles(false);
983 list_for_each_entry(pr, &devices, list)
989 static int main_detect(int argc, char **argv)
991 struct blkid_struct_probe *pr;
994 printf("config 'global'\n");
995 printf("\toption\tanon_swap\t'0'\n");
996 printf("\toption\tanon_mount\t'0'\n");
997 printf("\toption\tauto_swap\t'1'\n");
998 printf("\toption\tauto_mount\t'1'\n");
999 printf("\toption\tdelay_root\t'5'\n");
1000 printf("\toption\tcheck_fs\t'0'\n\n");
1001 list_for_each_entry(pr, &devices, list)
1002 print_block_uci(pr);
1007 static int main_info(int argc, char **argv)
1010 struct blkid_struct_probe *pr;
1014 list_for_each_entry(pr, &devices, list)
1015 print_block_info(pr);
1020 for (i = 2; i < argc; i++) {
1023 if (stat(argv[i], &s)) {
1024 fprintf(stderr, "failed to stat %s\n", argv[i]);
1027 if (!S_ISBLK(s.st_mode)) {
1028 fprintf(stderr, "%s is not a block device\n", argv[i]);
1031 pr = find_block_info(NULL, NULL, argv[i]);
1033 print_block_info(pr);
1039 static int swapon_usage(void)
1041 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1042 "\tStart swapping on [DEVICE]\n"
1043 " -a\tStart swapping on all swap devices\n"
1044 " -p pri\tSet priority of swap device\n"
1045 " -s\tShow summary\n");
1049 static int main_swapon(int argc, char **argv)
1055 struct blkid_struct_probe *pr;
1061 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1064 fp = fopen("/proc/swaps", "r");
1068 fprintf(stderr, "failed to open /proc/swaps\n");
1071 while (getline(&lineptr, &s, fp) > 0)
1079 list_for_each_entry(pr, &devices, list) {
1080 if (strcmp(pr->id->name, "swap"))
1082 if (swapon(pr->dev, 0))
1083 fprintf(stderr, "failed to swapon %s\n", pr->dev);
1089 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1092 return swapon_usage();
1097 if (optind != (argc - 1))
1098 return swapon_usage();
1100 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1101 fprintf(stderr, "%s is not a block device or file\n", argv[optind]);
1104 err = swapon(argv[optind], flags);
1106 fprintf(stderr, "failed to swapon %s (%d)\n", argv[optind], err);
1113 static int main_swapoff(int argc, char **argv)
1116 fprintf(stderr, "Usage: swapoff [-a] [DEVICE]\n\n"
1117 "\tStop swapping on DEVICE\n"
1118 " -a\tStop swapping on all swap devices\n");
1122 if (!strcmp(argv[1], "-a")) {
1123 FILE *fp = fopen("/proc/swaps", "r");
1127 fprintf(stderr, "failed to open /proc/swaps\n");
1130 fgets(line, sizeof(line), fp);
1131 while (fgets(line, sizeof(line), fp)) {
1132 char *end = strchr(line, ' ');
1138 err = swapoff(line);
1140 fprintf(stderr, "failed to swapoff %s (%d)\n", line, err);
1147 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1148 fprintf(stderr, "%s is not a block device or file\n", argv[1]);
1151 err = swapoff(argv[1]);
1153 fprintf(stderr, "fsiled to swapoff %s (%d)\n", argv[1], err);
1161 int main(int argc, char **argv)
1163 char *base = basename(*argv);
1167 if (!strcmp(base, "swapon"))
1168 return main_swapon(argc, argv);
1170 if (!strcmp(base, "swapoff"))
1171 return main_swapoff(argc, argv);
1173 if ((argc > 1) && !strcmp(base, "block")) {
1174 if (!strcmp(argv[1], "info"))
1175 return main_info(argc, argv);
1177 if (!strcmp(argv[1], "detect"))
1178 return main_detect(argc, argv);
1180 if (!strcmp(argv[1], "hotplug"))
1181 return main_hotplug(argc, argv);
1183 if (!strcmp(argv[1], "extroot"))
1184 return main_extroot(argc, argv);
1186 if (!strcmp(argv[1], "mount"))
1187 return main_mount(argc, argv);
1189 if (!strcmp(argv[1], "umount"))
1190 return main_umount(argc, argv);
1193 fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");