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"
39 #define ERROR(fmt, ...) do { \
40 syslog(LOG_ERR, fmt, ## __VA_ARGS__); \
41 fprintf(stderr, "block: "fmt, ## __VA_ARGS__); \
50 struct vlist_node node;
66 static struct vlist_tree mounts;
67 static struct blob_buf b;
68 static LIST_HEAD(devices);
69 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
70 static unsigned int delay_root;
82 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
83 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
84 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
85 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
86 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
87 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
88 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
101 static const struct uci_blob_param_list config_attr_list = {
102 .n_params = __CFG_MAX,
103 .params = config_policy,
106 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
107 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
108 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
109 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
110 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
111 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
112 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
115 static const struct uci_blob_param_list mount_attr_list = {
116 .n_params = __MOUNT_MAX,
117 .params = mount_policy,
129 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
130 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
131 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
132 [SWAP_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
133 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
134 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
137 static const struct uci_blob_param_list swap_attr_list = {
138 .n_params = __SWAP_MAX,
139 .params = swap_policy,
148 # define MS_DIRSYNC (1 << 7)
152 # define MS_RELATIME (1 << 21)
155 #ifndef MS_STRICTATIME
156 # define MS_STRICTATIME (1 << 24)
159 static const struct mount_flag mount_flags[] = {
160 { "sync", MS_SYNCHRONOUS },
161 { "async", ~MS_SYNCHRONOUS },
162 { "dirsync", MS_DIRSYNC },
163 { "mand", MS_MANDLOCK },
164 { "nomand", ~MS_MANDLOCK },
165 { "atime", ~MS_NOATIME },
166 { "noatime", MS_NOATIME },
167 { "dev", ~MS_NODEV },
168 { "nodev", MS_NODEV },
169 { "diratime", ~MS_NODIRATIME },
170 { "nodiratime", MS_NODIRATIME },
171 { "exec", ~MS_NOEXEC },
172 { "noexec", MS_NOEXEC },
173 { "suid", ~MS_NOSUID },
174 { "nosuid", MS_NOSUID },
175 { "rw", ~MS_RDONLY },
177 { "relatime", MS_RELATIME },
178 { "norelatime", ~MS_RELATIME },
179 { "strictatime", MS_STRICTATIME },
182 static char *blobmsg_get_strdup(struct blob_attr *attr)
187 return strdup(blobmsg_get_string(attr));
190 static char *blobmsg_get_basename(struct blob_attr *attr)
195 return strdup(basename(blobmsg_get_string(attr)));
198 static void parse_mount_options(struct mount *m, char *optstr)
202 char *p, *opts, *last;
207 if (!optstr || !*optstr)
210 m->options = opts = calloc(1, strlen(optstr) + 1);
223 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
224 if (!strcmp(last, mount_flags[i].name)) {
225 if (mount_flags[i].flag < 0)
226 m->flags &= (uint32_t)mount_flags[i].flag;
228 m->flags |= (uint32_t)mount_flags[i].flag;
235 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
244 static int mount_add(struct uci_section *s)
246 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
249 blob_buf_init(&b, 0);
250 uci_to_blob(&b, s, &mount_attr_list);
251 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
253 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
256 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
259 m = malloc(sizeof(struct mount));
260 m->type = TYPE_MOUNT;
261 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
262 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
263 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
264 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
266 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
268 m->overlay = m->extroot = 0;
269 if (m->target && !strcmp(m->target, "/"))
271 if (m->target && !strcmp(m->target, "/overlay"))
272 m->extroot = m->overlay = 1;
275 vlist_add(&mounts, &m->node, m->uuid);
277 vlist_add(&mounts, &m->node, m->label);
279 vlist_add(&mounts, &m->node, m->device);
284 static int swap_add(struct uci_section *s)
286 struct blob_attr *tb[__SWAP_MAX] = { 0 };
289 blob_buf_init(&b, 0);
290 uci_to_blob(&b, s, &swap_attr_list);
291 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
293 if (!tb[SWAP_UUID] && !tb[SWAP_LABEL] && !tb[SWAP_DEVICE])
296 m = malloc(sizeof(struct mount));
297 memset(m, 0, sizeof(struct mount));
299 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
300 m->label = blobmsg_get_strdup(tb[SWAP_LABEL]);
301 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
303 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
305 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
307 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
308 /* store complete swap path */
310 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
313 vlist_add(&mounts, &m->node, m->uuid);
315 vlist_add(&mounts, &m->node, m->label);
317 vlist_add(&mounts, &m->node, m->device);
323 static int global_add(struct uci_section *s)
325 struct blob_attr *tb[__CFG_MAX] = { 0 };
327 blob_buf_init(&b, 0);
328 uci_to_blob(&b, s, &config_attr_list);
329 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
331 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
333 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
336 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
338 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
341 if (tb[CFG_DELAY_ROOT])
342 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
344 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
350 static struct mount* find_swap(const char *uuid, const char *label, const char *device)
354 vlist_for_each_element(&mounts, m, node) {
355 if (m->type != TYPE_SWAP)
357 if (uuid && m->uuid && !strcasecmp(m->uuid, uuid))
359 if (label && m->label && !strcmp(m->label, label))
361 if (device && m->device && !strcmp(m->device, device))
368 static struct mount* find_block(const char *uuid, const char *label, const char *device,
373 vlist_for_each_element(&mounts, m, node) {
374 if (m->type != TYPE_MOUNT)
376 if (m->uuid && uuid && !strcasecmp(m->uuid, uuid))
378 if (m->label && label && !strcmp(m->label, label))
380 if (m->target && target && !strcmp(m->target, target))
382 if (m->device && device && !strcmp(m->device, device))
389 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
390 struct vlist_node *node_old)
394 static int config_load(char *cfg)
396 struct uci_context *ctx;
397 struct uci_package *pkg;
398 struct uci_element *e;
400 vlist_init(&mounts, avl_strcmp, mounts_update);
402 ctx = uci_alloc_context();
405 snprintf(path, 32, "%s/etc/config", cfg);
406 uci_set_confdir(ctx, path);
409 if (uci_load(ctx, "fstab", &pkg))
412 uci_get_errorstr(ctx, &err, "fstab");
413 ERROR("extroot: failed to load %s/etc/config/%s\n",
414 cfg ? cfg : "", err);
419 vlist_update(&mounts);
420 uci_foreach_element(&pkg->sections, e) {
421 struct uci_section *s = uci_to_section(e);
423 if (!strcmp(s->type, "mount"))
425 if (!strcmp(s->type, "swap"))
427 if (!strcmp(s->type, "global"))
430 vlist_flush(&mounts);
435 static struct blkid_struct_probe* _probe_path(char *path)
437 struct blkid_struct_probe *pr;
439 pr = malloc(sizeof(*pr));
444 memset(pr, 0, sizeof(*pr));
445 probe_block(path, pr);
447 if (pr->err || !pr->id) {
455 static int _cache_load(const char *path)
457 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
461 if (glob(path, gl_flags, NULL, &gl) < 0)
464 for (j = 0; j < gl.gl_pathc; j++) {
465 struct blkid_struct_probe *pr = _probe_path(gl.gl_pathv[j]);
467 list_add_tail(&pr->list, &devices);
475 static void cache_load(int mtd)
478 _cache_load("/dev/mtdblock*");
479 _cache_load("/dev/ubiblock*");
481 _cache_load("/dev/mmcblk*");
482 _cache_load("/dev/sd*");
483 _cache_load("/dev/hd*");
484 _cache_load("/dev/md*");
485 _cache_load("/dev/vd*");
486 _cache_load("/dev/mapper/*");
489 static int print_block_info(struct blkid_struct_probe *pr)
491 printf("%s:", pr->dev);
493 printf(" UUID=\"%s\"", pr->uuid);
496 printf(" LABEL=\"%s\"", pr->label);
499 printf(" NAME=\"%s\"", pr->name);
502 printf(" VERSION=\"%s\"", pr->version);
504 printf(" TYPE=\"%s\"\n", pr->id->name);
509 static int print_block_uci(struct blkid_struct_probe *pr)
511 if (!strcmp(pr->id->name, "swap")) {
512 printf("config 'swap'\n");
514 printf("config 'mount'\n");
515 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
518 printf("\toption\tuuid\t'%s'\n", pr->uuid);
520 printf("\toption\tdevice\t'%s'\n", pr->dev);
521 printf("\toption\tenabled\t'0'\n\n");
526 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
528 struct blkid_struct_probe *pr = NULL;
531 list_for_each_entry(pr, &devices, list)
532 if (!strcasecmp(pr->uuid, uuid))
536 list_for_each_entry(pr, &devices, list)
537 if (!strcmp(pr->label, label))
541 list_for_each_entry(pr, &devices, list)
542 if (!strcmp(basename(pr->dev), basename(path)))
548 static char* find_mount_point(char *block)
550 FILE *fp = fopen("/proc/mounts", "r");
551 static char line[256];
552 int len = strlen(block);
558 while (fgets(line, sizeof(line), fp)) {
559 if (!strncmp(line, block, len)) {
560 char *p = &line[len + 1];
561 char *t = strstr(p, " ");
578 static void mkdir_p(char *dir)
580 char *l = strrchr(dir, '/');
590 static void check_filesystem(struct blkid_struct_probe *pr)
594 char *e2fsck = "/usr/sbin/e2fsck";
596 if (strncmp(pr->id->name, "ext", 3)) {
597 ERROR("check_filesystem: %s is not supported\n", pr->id->name);
601 if (stat(e2fsck, &statbuf) < 0) {
602 ERROR("check_filesystem: %s not found\n", e2fsck);
608 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
610 } else if (pid > 0) {
613 waitpid(pid, &status, 0);
614 if (WEXITSTATUS(status))
615 ERROR("check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
619 static void handle_swapfiles(bool on)
623 struct blkid_struct_probe *pr;
625 vlist_for_each_element(&mounts, m, node)
627 if (m->type != TYPE_SWAP || !m->target)
630 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
633 pr = _probe_path(m->target);
638 if (!strcmp(pr->id->name, "swap")) {
640 swapon(pr->dev, m->prio);
649 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
657 device = basename(pr->dev);
659 if (!strcmp(pr->id->name, "swap")) {
660 if (hotplug && !auto_swap)
662 m = find_swap(pr->uuid, pr->label, device);
664 swapon(pr->dev, (m) ? (m->prio) : (0));
669 if (hotplug && !auto_mount)
672 if (find_mount_point(pr->dev)) {
673 ERROR("%s is already mounted\n", pr->dev);
677 m = find_block(pr->uuid, pr->label, device, NULL);
682 char *target = m->target;
687 snprintf(_target, sizeof(_target), "/mnt/%s", device);
693 check_filesystem(pr);
695 err = mount(pr->dev, target, pr->id->name, m->flags,
696 (m->options) ? (m->options) : (""));
698 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
699 pr->dev, pr->id->name, target, err, strerror(err));
701 handle_swapfiles(true);
706 char target[] = "/mnt/mmcblk123";
709 snprintf(target, sizeof(target), "/mnt/%s", device);
713 check_filesystem(pr);
715 err = mount(pr->dev, target, pr->id->name, 0, "");
717 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
718 pr->dev, pr->id->name, target, err, strerror(err));
720 handle_swapfiles(true);
727 static int umount_device(struct blkid_struct_probe *pr)
730 char *device = basename(pr->dev);
737 if (!strcmp(pr->id->name, "swap"))
740 mp = find_mount_point(pr->dev);
744 m = find_block(pr->uuid, pr->label, device, NULL);
748 err = umount2(mp, MNT_DETACH);
750 ERROR("unmounting %s (%s) failed (%d) - %s\n",
751 pr->dev, mp, err, strerror(err));
753 ERROR("unmounted %s (%s)\n",
759 static int main_hotplug(int argc, char **argv)
762 char *action, *device, *mount_point;
764 action = getenv("ACTION");
765 device = getenv("DEVNAME");
767 if (!action || !device)
769 snprintf(path, sizeof(path), "/dev/%s", device);
771 if (!strcmp(action, "remove")) {
773 mount_point = find_mount_point(path);
775 err = umount2(mount_point, MNT_DETACH);
778 ERROR("umount of %s failed (%d) - %s\n",
779 mount_point, err, strerror(err));
782 } else if (strcmp(action, "add")) {
783 ERROR("Unkown action %s\n", action);
788 if (config_load(NULL))
792 return mount_device(find_block_info(NULL, NULL, path), 1);
795 static int find_block_mtd(char *name, char *part, int plen)
797 FILE *fp = fopen("/proc/mtd", "r");
798 static char line[256];
804 while (!index && fgets(line, sizeof(line), fp)) {
805 if (strstr(line, name)) {
806 char *eol = strstr(line, ":");
821 snprintf(part, plen, "/dev/mtdblock%s", index);
826 static int check_extroot(char *path)
828 struct blkid_struct_probe *pr = NULL;
831 if (find_block_mtd("rootfs", fs, sizeof(fs)))
834 list_for_each_entry(pr, &devices, list) {
835 if (!strcmp(pr->dev, fs)) {
839 char uuid[64] = { 0 };
841 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
843 fp = fopen(tag, "w+");
845 ERROR("extroot: failed to write uuid tag file\n");
846 /* return 0 to continue boot regardless of error */
854 fp = fopen(tag, "r");
856 ERROR("extroot: failed to open uuid tag file\n");
860 fgets(uuid, sizeof(uuid), fp);
862 if (!strcasecmp(uuid, pr->uuid))
864 ERROR("extroot: uuid tag does not match rom uuid\n");
870 static int mount_extroot(char *cfg)
872 char overlay[] = "/tmp/extroot/overlay";
873 char mnt[] = "/tmp/extroot/mnt";
875 struct blkid_struct_probe *pr;
879 if (config_load(cfg))
882 m = find_block(NULL, NULL, NULL, "/");
884 m = find_block(NULL, NULL, NULL, "/overlay");
886 if (!m || !m->extroot)
888 ERROR("extroot: no root or overlay mount defined\n");
892 pr = find_block_info(m->uuid, m->label, m->device);
894 if (!pr && delay_root){
895 ERROR("extroot: is not ready yet, retrying in %u seconds\n", delay_root);
899 pr = find_block_info(m->uuid, m->label, m->device);
902 if (strncmp(pr->id->name, "ext", 3)) {
903 ERROR("extroot: %s is not supported, try ext4\n", pr->id->name);
911 check_filesystem(pr);
913 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
916 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
917 pr->dev, pr->id->name, path, err, strerror(err));
918 } else if (m->overlay) {
919 err = check_extroot(path);
924 ERROR("extroot: cannot find block device\n");
930 static int main_extroot(int argc, char **argv)
932 struct blkid_struct_probe *pr;
934 char fs_data[32] = { 0 };
937 if (!getenv("PREINIT"))
941 fprintf(stderr, "Usage: block extroot mountpoint\n");
948 find_block_mtd("rootfs", fs, sizeof(fs));
950 ERROR("extroot: unable to locate rootfs mtdblock\n");
954 pr = find_block_info(NULL, NULL, fs);
956 ERROR("extroot: unable to retrieve rootfs information\n");
960 find_block_mtd("rootfs_data", fs_data, sizeof(fs_data));
962 pr = find_block_info(NULL, NULL, fs_data);
963 if (pr && !strcmp(pr->id->name, "jffs2")) {
964 char cfg[] = "/tmp/jffs_cfg";
967 if (!mount(fs_data, cfg, "jffs2", MS_NOATIME, NULL)) {
968 err = mount_extroot(cfg);
969 umount2(cfg, MNT_DETACH);
972 rmdir("/tmp/overlay");
978 return mount_extroot(NULL);
981 static int main_mount(int argc, char **argv)
983 struct blkid_struct_probe *pr;
985 if (config_load(NULL))
989 list_for_each_entry(pr, &devices, list)
992 handle_swapfiles(true);
997 static int main_umount(int argc, char **argv)
999 struct blkid_struct_probe *pr;
1001 if (config_load(NULL))
1004 handle_swapfiles(false);
1007 list_for_each_entry(pr, &devices, list)
1013 static int main_detect(int argc, char **argv)
1015 struct blkid_struct_probe *pr;
1018 printf("config 'global'\n");
1019 printf("\toption\tanon_swap\t'0'\n");
1020 printf("\toption\tanon_mount\t'0'\n");
1021 printf("\toption\tauto_swap\t'1'\n");
1022 printf("\toption\tauto_mount\t'1'\n");
1023 printf("\toption\tdelay_root\t'5'\n");
1024 printf("\toption\tcheck_fs\t'0'\n\n");
1025 list_for_each_entry(pr, &devices, list)
1026 print_block_uci(pr);
1031 static int main_info(int argc, char **argv)
1034 struct blkid_struct_probe *pr;
1038 list_for_each_entry(pr, &devices, list)
1039 print_block_info(pr);
1044 for (i = 2; i < argc; i++) {
1047 if (stat(argv[i], &s)) {
1048 ERROR("failed to stat %s\n", argv[i]);
1051 if (!S_ISBLK(s.st_mode)) {
1052 ERROR("%s is not a block device\n", argv[i]);
1055 pr = find_block_info(NULL, NULL, argv[i]);
1057 print_block_info(pr);
1063 static int swapon_usage(void)
1065 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1066 "\tStart swapping on [DEVICE]\n"
1067 " -a\tStart swapping on all swap devices\n"
1068 " -p pri\tSet priority of swap device\n"
1069 " -s\tShow summary\n");
1073 static int main_swapon(int argc, char **argv)
1079 struct blkid_struct_probe *pr;
1085 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1088 fp = fopen("/proc/swaps", "r");
1092 ERROR("failed to open /proc/swaps\n");
1095 while (getline(&lineptr, &s, fp) > 0)
1103 list_for_each_entry(pr, &devices, list) {
1104 if (strcmp(pr->id->name, "swap"))
1106 if (swapon(pr->dev, 0))
1107 ERROR("failed to swapon %s\n", pr->dev);
1113 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1116 return swapon_usage();
1121 if (optind != (argc - 1))
1122 return swapon_usage();
1124 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1125 ERROR("%s is not a block device or file\n", argv[optind]);
1128 err = swapon(argv[optind], flags);
1130 ERROR("failed to swapon %s (%d)\n", argv[optind], err);
1137 static int main_swapoff(int argc, char **argv)
1140 ERROR("Usage: swapoff [-a] [DEVICE]\n\n"
1141 "\tStop swapping on DEVICE\n"
1142 " -a\tStop swapping on all swap devices\n");
1146 if (!strcmp(argv[1], "-a")) {
1147 FILE *fp = fopen("/proc/swaps", "r");
1151 ERROR("failed to open /proc/swaps\n");
1154 fgets(line, sizeof(line), fp);
1155 while (fgets(line, sizeof(line), fp)) {
1156 char *end = strchr(line, ' ');
1162 err = swapoff(line);
1164 ERROR("failed to swapoff %s (%d)\n", line, err);
1171 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1172 ERROR("%s is not a block device or file\n", argv[1]);
1175 err = swapoff(argv[1]);
1177 ERROR("fsiled to swapoff %s (%d)\n", argv[1], err);
1185 int main(int argc, char **argv)
1187 char *base = basename(*argv);
1191 if (!strcmp(base, "swapon"))
1192 return main_swapon(argc, argv);
1194 if (!strcmp(base, "swapoff"))
1195 return main_swapoff(argc, argv);
1197 if ((argc > 1) && !strcmp(base, "block")) {
1198 if (!strcmp(argv[1], "info"))
1199 return main_info(argc, argv);
1201 if (!strcmp(argv[1], "detect"))
1202 return main_detect(argc, argv);
1204 if (!strcmp(argv[1], "hotplug"))
1205 return main_hotplug(argc, argv);
1207 if (!strcmp(argv[1], "extroot"))
1208 return main_extroot(argc, argv);
1210 if (!strcmp(argv[1], "mount"))
1211 return main_mount(argc, argv);
1213 if (!strcmp(argv[1], "umount"))
1214 return main_umount(argc, argv);
1217 fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");