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"
40 #include "libubi/libubi.h"
43 #define ERROR(fmt, ...) do { \
44 syslog(LOG_ERR, fmt, ## __VA_ARGS__); \
45 fprintf(stderr, "block: "fmt, ## __VA_ARGS__); \
54 struct vlist_node node;
70 static struct vlist_tree mounts;
71 static struct blob_buf b;
72 static LIST_HEAD(devices);
73 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
74 static unsigned int delay_root;
86 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
87 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
88 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
89 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
90 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
91 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
92 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
105 static const struct uci_blob_param_list config_attr_list = {
106 .n_params = __CFG_MAX,
107 .params = config_policy,
110 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
111 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
112 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
113 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
114 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
115 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
116 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
119 static const struct uci_blob_param_list mount_attr_list = {
120 .n_params = __MOUNT_MAX,
121 .params = mount_policy,
133 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
134 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
135 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
136 [SWAP_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
137 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
138 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
141 static const struct uci_blob_param_list swap_attr_list = {
142 .n_params = __SWAP_MAX,
143 .params = swap_policy,
152 # define MS_DIRSYNC (1 << 7)
156 # define MS_RELATIME (1 << 21)
159 #ifndef MS_STRICTATIME
160 # define MS_STRICTATIME (1 << 24)
163 static const struct mount_flag mount_flags[] = {
164 { "sync", MS_SYNCHRONOUS },
165 { "async", ~MS_SYNCHRONOUS },
166 { "dirsync", MS_DIRSYNC },
167 { "mand", MS_MANDLOCK },
168 { "nomand", ~MS_MANDLOCK },
169 { "atime", ~MS_NOATIME },
170 { "noatime", MS_NOATIME },
171 { "dev", ~MS_NODEV },
172 { "nodev", MS_NODEV },
173 { "diratime", ~MS_NODIRATIME },
174 { "nodiratime", MS_NODIRATIME },
175 { "exec", ~MS_NOEXEC },
176 { "noexec", MS_NOEXEC },
177 { "suid", ~MS_NOSUID },
178 { "nosuid", MS_NOSUID },
179 { "rw", ~MS_RDONLY },
181 { "relatime", MS_RELATIME },
182 { "norelatime", ~MS_RELATIME },
183 { "strictatime", MS_STRICTATIME },
186 static char *blobmsg_get_strdup(struct blob_attr *attr)
191 return strdup(blobmsg_get_string(attr));
194 static char *blobmsg_get_basename(struct blob_attr *attr)
199 return strdup(basename(blobmsg_get_string(attr)));
202 static void parse_mount_options(struct mount *m, char *optstr)
206 char *p, *opts, *last;
211 if (!optstr || !*optstr)
214 m->options = opts = calloc(1, strlen(optstr) + 1);
227 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
228 if (!strcmp(last, mount_flags[i].name)) {
229 if (mount_flags[i].flag < 0)
230 m->flags &= (uint32_t)mount_flags[i].flag;
232 m->flags |= (uint32_t)mount_flags[i].flag;
239 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
248 static int mount_add(struct uci_section *s)
250 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
253 blob_buf_init(&b, 0);
254 uci_to_blob(&b, s, &mount_attr_list);
255 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
257 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
260 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
263 m = malloc(sizeof(struct mount));
264 m->type = TYPE_MOUNT;
265 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
266 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
267 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
268 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
270 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
272 m->overlay = m->extroot = 0;
273 if (m->target && !strcmp(m->target, "/"))
275 if (m->target && !strcmp(m->target, "/overlay"))
276 m->extroot = m->overlay = 1;
279 vlist_add(&mounts, &m->node, m->uuid);
281 vlist_add(&mounts, &m->node, m->label);
283 vlist_add(&mounts, &m->node, m->device);
288 static int swap_add(struct uci_section *s)
290 struct blob_attr *tb[__SWAP_MAX] = { 0 };
293 blob_buf_init(&b, 0);
294 uci_to_blob(&b, s, &swap_attr_list);
295 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
297 if (!tb[SWAP_UUID] && !tb[SWAP_LABEL] && !tb[SWAP_DEVICE])
300 m = malloc(sizeof(struct mount));
301 memset(m, 0, sizeof(struct mount));
303 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
304 m->label = blobmsg_get_strdup(tb[SWAP_LABEL]);
305 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
307 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
309 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
311 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
312 /* store complete swap path */
314 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
317 vlist_add(&mounts, &m->node, m->uuid);
319 vlist_add(&mounts, &m->node, m->label);
321 vlist_add(&mounts, &m->node, m->device);
327 static int global_add(struct uci_section *s)
329 struct blob_attr *tb[__CFG_MAX] = { 0 };
331 blob_buf_init(&b, 0);
332 uci_to_blob(&b, s, &config_attr_list);
333 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
335 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
337 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
340 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
342 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
345 if (tb[CFG_DELAY_ROOT])
346 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
348 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
354 static struct mount* find_swap(const char *uuid, const char *label, const char *device)
358 vlist_for_each_element(&mounts, m, node) {
359 if (m->type != TYPE_SWAP)
361 if (uuid && m->uuid && !strcasecmp(m->uuid, uuid))
363 if (label && m->label && !strcmp(m->label, label))
365 if (device && m->device && !strcmp(m->device, device))
372 static struct mount* find_block(const char *uuid, const char *label, const char *device,
377 vlist_for_each_element(&mounts, m, node) {
378 if (m->type != TYPE_MOUNT)
380 if (m->uuid && uuid && !strcasecmp(m->uuid, uuid))
382 if (m->label && label && !strcmp(m->label, label))
384 if (m->target && target && !strcmp(m->target, target))
386 if (m->device && device && !strcmp(m->device, device))
393 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
394 struct vlist_node *node_old)
398 static int config_load(char *cfg)
400 struct uci_context *ctx;
401 struct uci_package *pkg;
402 struct uci_element *e;
404 vlist_init(&mounts, avl_strcmp, mounts_update);
406 ctx = uci_alloc_context();
409 snprintf(path, 32, "%s/etc/config", cfg);
410 uci_set_confdir(ctx, path);
413 if (uci_load(ctx, "fstab", &pkg))
416 uci_get_errorstr(ctx, &err, "fstab");
417 ERROR("extroot: failed to load %s/etc/config/%s\n",
418 cfg ? cfg : "", err);
423 vlist_update(&mounts);
424 uci_foreach_element(&pkg->sections, e) {
425 struct uci_section *s = uci_to_section(e);
427 if (!strcmp(s->type, "mount"))
429 if (!strcmp(s->type, "swap"))
431 if (!strcmp(s->type, "global"))
434 vlist_flush(&mounts);
439 static struct blkid_struct_probe* _probe_path(char *path)
441 struct blkid_struct_probe *pr;
443 pr = malloc(sizeof(*pr));
448 memset(pr, 0, sizeof(*pr));
449 probe_block(path, pr);
451 if (pr->err || !pr->id) {
459 static int _cache_load(const char *path)
461 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
465 if (glob(path, gl_flags, NULL, &gl) < 0)
468 for (j = 0; j < gl.gl_pathc; j++) {
469 struct blkid_struct_probe *pr = _probe_path(gl.gl_pathv[j]);
471 list_add_tail(&pr->list, &devices);
479 static void cache_load(int mtd)
482 _cache_load("/dev/mtdblock*");
483 _cache_load("/dev/ubiblock*");
485 _cache_load("/dev/mmcblk*");
486 _cache_load("/dev/sd*");
487 _cache_load("/dev/hd*");
488 _cache_load("/dev/md*");
489 _cache_load("/dev/vd*");
490 _cache_load("/dev/mapper/*");
493 static int print_block_info(struct blkid_struct_probe *pr)
495 printf("%s:", pr->dev);
497 printf(" UUID=\"%s\"", pr->uuid);
500 printf(" LABEL=\"%s\"", pr->label);
503 printf(" NAME=\"%s\"", pr->name);
506 printf(" VERSION=\"%s\"", pr->version);
508 printf(" TYPE=\"%s\"\n", pr->id->name);
513 static int print_block_uci(struct blkid_struct_probe *pr)
515 if (!strcmp(pr->id->name, "swap")) {
516 printf("config 'swap'\n");
518 printf("config 'mount'\n");
519 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
522 printf("\toption\tuuid\t'%s'\n", pr->uuid);
524 printf("\toption\tdevice\t'%s'\n", pr->dev);
525 printf("\toption\tenabled\t'0'\n\n");
530 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
532 struct blkid_struct_probe *pr = NULL;
535 list_for_each_entry(pr, &devices, list)
536 if (!strcasecmp(pr->uuid, uuid))
540 list_for_each_entry(pr, &devices, list)
541 if (!strcmp(pr->label, label))
545 list_for_each_entry(pr, &devices, list)
546 if (!strcmp(basename(pr->dev), basename(path)))
552 static char* find_mount_point(char *block)
554 FILE *fp = fopen("/proc/mounts", "r");
555 static char line[256];
556 int len = strlen(block);
562 while (fgets(line, sizeof(line), fp)) {
563 if (!strncmp(line, block, len)) {
564 char *p = &line[len + 1];
565 char *t = strstr(p, " ");
582 static void mkdir_p(char *dir)
584 char *l = strrchr(dir, '/');
594 static void check_filesystem(struct blkid_struct_probe *pr)
598 char *e2fsck = "/usr/sbin/e2fsck";
600 if (strncmp(pr->id->name, "ext", 3)) {
601 ERROR("check_filesystem: %s is not supported\n", pr->id->name);
605 if (stat(e2fsck, &statbuf) < 0) {
606 ERROR("check_filesystem: %s not found\n", e2fsck);
612 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
614 } else if (pid > 0) {
617 waitpid(pid, &status, 0);
618 if (WEXITSTATUS(status))
619 ERROR("check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
623 static void handle_swapfiles(bool on)
627 struct blkid_struct_probe *pr;
629 vlist_for_each_element(&mounts, m, node)
631 if (m->type != TYPE_SWAP || !m->target)
634 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
637 pr = _probe_path(m->target);
642 if (!strcmp(pr->id->name, "swap")) {
644 swapon(pr->dev, m->prio);
653 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
661 device = basename(pr->dev);
663 if (!strcmp(pr->id->name, "swap")) {
664 if (hotplug && !auto_swap)
666 m = find_swap(pr->uuid, pr->label, device);
668 swapon(pr->dev, (m) ? (m->prio) : (0));
673 if (hotplug && !auto_mount)
676 if (find_mount_point(pr->dev)) {
677 ERROR("%s is already mounted\n", pr->dev);
681 m = find_block(pr->uuid, pr->label, device, NULL);
686 char *target = m->target;
691 snprintf(_target, sizeof(_target), "/mnt/%s", device);
697 check_filesystem(pr);
699 err = mount(pr->dev, target, pr->id->name, m->flags,
700 (m->options) ? (m->options) : (""));
702 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
703 pr->dev, pr->id->name, target, err, strerror(err));
705 handle_swapfiles(true);
710 char target[] = "/mnt/mmcblk123";
713 snprintf(target, sizeof(target), "/mnt/%s", device);
717 check_filesystem(pr);
719 err = mount(pr->dev, target, pr->id->name, 0, "");
721 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
722 pr->dev, pr->id->name, target, err, strerror(err));
724 handle_swapfiles(true);
731 static int umount_device(struct blkid_struct_probe *pr)
734 char *device = basename(pr->dev);
741 if (!strcmp(pr->id->name, "swap"))
744 mp = find_mount_point(pr->dev);
748 m = find_block(pr->uuid, pr->label, device, NULL);
752 err = umount2(mp, MNT_DETACH);
754 ERROR("unmounting %s (%s) failed (%d) - %s\n",
755 pr->dev, mp, err, strerror(err));
757 ERROR("unmounted %s (%s)\n",
763 static int main_hotplug(int argc, char **argv)
766 char *action, *device, *mount_point;
768 action = getenv("ACTION");
769 device = getenv("DEVNAME");
771 if (!action || !device)
773 snprintf(path, sizeof(path), "/dev/%s", device);
775 if (!strcmp(action, "remove")) {
777 mount_point = find_mount_point(path);
779 err = umount2(mount_point, MNT_DETACH);
782 ERROR("umount of %s failed (%d) - %s\n",
783 mount_point, err, strerror(err));
786 } else if (strcmp(action, "add")) {
787 ERROR("Unkown action %s\n", action);
792 if (config_load(NULL))
796 return mount_device(find_block_info(NULL, NULL, path), 1);
799 static int find_block_mtd(char *name, char *part, int plen)
801 FILE *fp = fopen("/proc/mtd", "r");
802 static char line[256];
808 while (!index && fgets(line, sizeof(line), fp)) {
809 if (strstr(line, name)) {
810 char *eol = strstr(line, ":");
825 snprintf(part, plen, "/dev/mtdblock%s", index);
831 static int find_ubi_vol(libubi_t libubi, char *name, int *dev_num, int *vol_id)
835 while (ubi_dev_present(libubi, dev))
837 struct ubi_dev_info dev_info;
838 struct ubi_vol_info vol_info;
840 if (ubi_get_dev_info1(libubi, dev++, &dev_info))
842 if (ubi_get_vol_info1_nm(libubi, dev_info.dev_num, name, &vol_info))
845 *dev_num = dev_info.dev_num;
846 *vol_id = vol_info.vol_id;
854 static int find_block_ubi(libubi_t libubi, char *name, char *part, int plen)
860 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
862 snprintf(part, plen, "/dev/ubi%d_%d", dev_num, vol_id);
867 static int find_block_ubi_RO(libubi_t libubi, char *name, char *part, int plen)
873 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
875 snprintf(part, plen, "/dev/ubiblock%d_%d", dev_num, vol_id);
881 static int check_extroot(char *path)
883 struct blkid_struct_probe *pr = NULL;
887 if (find_block_mtd("rootfs", fs, sizeof(fs))) {
891 libubi = libubi_open();
892 err = find_block_ubi_RO(libubi, "rootfs", fs, sizeof(fs));
893 libubi_close(libubi);
898 if (find_block_mtd("rootfs", fs, sizeof(fs)))
902 list_for_each_entry(pr, &devices, list) {
903 if (!strcmp(pr->dev, fs)) {
907 char uuid[64] = { 0 };
909 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
911 fp = fopen(tag, "w+");
913 ERROR("extroot: failed to write uuid tag file\n");
914 /* return 0 to continue boot regardless of error */
922 fp = fopen(tag, "r");
924 ERROR("extroot: failed to open uuid tag file\n");
928 fgets(uuid, sizeof(uuid), fp);
930 if (!strcasecmp(uuid, pr->uuid))
932 ERROR("extroot: uuid tag does not match rom uuid\n");
939 * Read info about extroot from UCI (using prefix) and mount it.
941 static int mount_extroot(char *cfg)
943 char overlay[] = "/tmp/extroot/overlay";
944 char mnt[] = "/tmp/extroot/mnt";
946 struct blkid_struct_probe *pr;
950 /* Load @cfg/etc/config/fstab */
951 if (config_load(cfg))
954 /* See if there is extroot-specific mount config */
955 m = find_block(NULL, NULL, NULL, "/");
957 m = find_block(NULL, NULL, NULL, "/overlay");
959 if (!m || !m->extroot)
961 ERROR("extroot: no root or overlay mount defined\n");
965 /* Find block device pointed by the mount config */
966 pr = find_block_info(m->uuid, m->label, m->device);
968 if (!pr && delay_root){
969 ERROR("extroot: is not ready yet, retrying in %u seconds\n", delay_root);
973 pr = find_block_info(m->uuid, m->label, m->device);
976 if (strncmp(pr->id->name, "ext", 3)) {
977 ERROR("extroot: %s is not supported, try ext4\n", pr->id->name);
985 check_filesystem(pr);
987 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
990 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
991 pr->dev, pr->id->name, path, err, strerror(err));
992 } else if (m->overlay) {
993 err = check_extroot(path);
998 ERROR("extroot: cannot find block device\n");
1004 static int main_extroot(int argc, char **argv)
1006 struct blkid_struct_probe *pr;
1007 char fs[32] = { 0 };
1008 char blkdev_path[32] = { 0 };
1010 #ifdef UBIFS_EXTROOT
1014 if (!getenv("PREINIT"))
1018 fprintf(stderr, "Usage: block extroot mountpoint\n");
1026 * Make sure there is "rootfs" MTD partition or UBI volume.
1029 find_block_mtd("rootfs", fs, sizeof(fs));
1031 #ifdef UBIFS_EXTROOT
1032 libubi = libubi_open();
1033 find_block_ubi_RO(libubi, "rootfs", fs, sizeof(fs));
1034 libubi_close(libubi);
1036 ERROR("extroot: unable to locate rootfs mtdblock / ubiblock\n");
1040 ERROR("extroot: unable to locate rootfs mtdblock\n");
1045 pr = find_block_info(NULL, NULL, fs);
1047 ERROR("extroot: unable to retrieve rootfs information\n");
1052 * Look for "rootfs_data". We will want to mount it and check for
1053 * extroot configuration.
1056 /* Start with looking for MTD partition */
1057 find_block_mtd("rootfs_data", blkdev_path, sizeof(blkdev_path));
1058 if (blkdev_path[0]) {
1059 pr = find_block_info(NULL, NULL, blkdev_path);
1060 if (pr && !strcmp(pr->id->name, "jffs2")) {
1061 char cfg[] = "/tmp/jffs_cfg";
1064 * Mount MTD part and try extroot (using
1065 * /etc/config/fstab from that partition)
1068 if (!mount(blkdev_path, cfg, "jffs2", MS_NOATIME, NULL)) {
1069 err = mount_extroot(cfg);
1070 umount2(cfg, MNT_DETACH);
1073 rmdir("/tmp/overlay");
1079 #ifdef UBIFS_EXTROOT
1080 /* ... but it also could be an UBI volume */
1081 memset(blkdev_path, 0, sizeof(blkdev_path));
1082 libubi = libubi_open();
1083 find_block_ubi(libubi, "rootfs_data", blkdev_path, sizeof(blkdev_path));
1084 libubi_close(libubi);
1085 if (blkdev_path[0]) {
1086 char cfg[] = "/tmp/ubifs_cfg";
1088 /* Mount volume and try extroot (using fstab from that vol) */
1090 if (!mount(blkdev_path, cfg, "ubifs", MS_NOATIME, NULL)) {
1091 err = mount_extroot(cfg);
1092 umount2(cfg, MNT_DETACH);
1095 rmdir("/tmp/overlay");
1101 return mount_extroot(NULL);
1104 static int main_mount(int argc, char **argv)
1106 struct blkid_struct_probe *pr;
1108 if (config_load(NULL))
1112 list_for_each_entry(pr, &devices, list)
1113 mount_device(pr, 0);
1115 handle_swapfiles(true);
1120 static int main_umount(int argc, char **argv)
1122 struct blkid_struct_probe *pr;
1124 if (config_load(NULL))
1127 handle_swapfiles(false);
1130 list_for_each_entry(pr, &devices, list)
1136 static int main_detect(int argc, char **argv)
1138 struct blkid_struct_probe *pr;
1141 printf("config 'global'\n");
1142 printf("\toption\tanon_swap\t'0'\n");
1143 printf("\toption\tanon_mount\t'0'\n");
1144 printf("\toption\tauto_swap\t'1'\n");
1145 printf("\toption\tauto_mount\t'1'\n");
1146 printf("\toption\tdelay_root\t'5'\n");
1147 printf("\toption\tcheck_fs\t'0'\n\n");
1148 list_for_each_entry(pr, &devices, list)
1149 print_block_uci(pr);
1154 static int main_info(int argc, char **argv)
1157 struct blkid_struct_probe *pr;
1161 list_for_each_entry(pr, &devices, list)
1162 print_block_info(pr);
1167 for (i = 2; i < argc; i++) {
1170 if (stat(argv[i], &s)) {
1171 ERROR("failed to stat %s\n", argv[i]);
1174 if (!S_ISBLK(s.st_mode)) {
1175 ERROR("%s is not a block device\n", argv[i]);
1178 pr = find_block_info(NULL, NULL, argv[i]);
1180 print_block_info(pr);
1186 static int swapon_usage(void)
1188 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1189 "\tStart swapping on [DEVICE]\n"
1190 " -a\tStart swapping on all swap devices\n"
1191 " -p pri\tSet priority of swap device\n"
1192 " -s\tShow summary\n");
1196 static int main_swapon(int argc, char **argv)
1202 struct blkid_struct_probe *pr;
1208 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1211 fp = fopen("/proc/swaps", "r");
1215 ERROR("failed to open /proc/swaps\n");
1218 while (getline(&lineptr, &s, fp) > 0)
1226 list_for_each_entry(pr, &devices, list) {
1227 if (strcmp(pr->id->name, "swap"))
1229 if (swapon(pr->dev, 0))
1230 ERROR("failed to swapon %s\n", pr->dev);
1236 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1239 return swapon_usage();
1244 if (optind != (argc - 1))
1245 return swapon_usage();
1247 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1248 ERROR("%s is not a block device or file\n", argv[optind]);
1251 err = swapon(argv[optind], flags);
1253 ERROR("failed to swapon %s (%d)\n", argv[optind], err);
1260 static int main_swapoff(int argc, char **argv)
1263 ERROR("Usage: swapoff [-a] [DEVICE]\n\n"
1264 "\tStop swapping on DEVICE\n"
1265 " -a\tStop swapping on all swap devices\n");
1269 if (!strcmp(argv[1], "-a")) {
1270 FILE *fp = fopen("/proc/swaps", "r");
1274 ERROR("failed to open /proc/swaps\n");
1277 fgets(line, sizeof(line), fp);
1278 while (fgets(line, sizeof(line), fp)) {
1279 char *end = strchr(line, ' ');
1285 err = swapoff(line);
1287 ERROR("failed to swapoff %s (%d)\n", line, err);
1294 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1295 ERROR("%s is not a block device or file\n", argv[1]);
1298 err = swapoff(argv[1]);
1300 ERROR("fsiled to swapoff %s (%d)\n", argv[1], err);
1308 int main(int argc, char **argv)
1310 char *base = basename(*argv);
1314 if (!strcmp(base, "swapon"))
1315 return main_swapon(argc, argv);
1317 if (!strcmp(base, "swapoff"))
1318 return main_swapoff(argc, argv);
1320 if ((argc > 1) && !strcmp(base, "block")) {
1321 if (!strcmp(argv[1], "info"))
1322 return main_info(argc, argv);
1324 if (!strcmp(argv[1], "detect"))
1325 return main_detect(argc, argv);
1327 if (!strcmp(argv[1], "hotplug"))
1328 return main_hotplug(argc, argv);
1330 if (!strcmp(argv[1], "extroot"))
1331 return main_extroot(argc, argv);
1333 if (!strcmp(argv[1], "mount"))
1334 return main_mount(argc, argv);
1336 if (!strcmp(argv[1], "umount"))
1337 return main_umount(argc, argv);
1340 fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");