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*");
484 _cache_load("/dev/ubi?*_?*");
486 _cache_load("/dev/mmcblk*");
487 _cache_load("/dev/sd*");
488 _cache_load("/dev/hd*");
489 _cache_load("/dev/md*");
490 _cache_load("/dev/vd*");
491 _cache_load("/dev/mapper/*");
494 static int print_block_info(struct blkid_struct_probe *pr)
496 printf("%s:", pr->dev);
498 printf(" UUID=\"%s\"", pr->uuid);
501 printf(" LABEL=\"%s\"", pr->label);
504 printf(" NAME=\"%s\"", pr->name);
507 printf(" VERSION=\"%s\"", pr->version);
509 printf(" TYPE=\"%s\"\n", pr->id->name);
514 static int print_block_uci(struct blkid_struct_probe *pr)
516 if (!strcmp(pr->id->name, "swap")) {
517 printf("config 'swap'\n");
519 printf("config 'mount'\n");
520 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
523 printf("\toption\tuuid\t'%s'\n", pr->uuid);
525 printf("\toption\tdevice\t'%s'\n", pr->dev);
526 printf("\toption\tenabled\t'0'\n\n");
531 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
533 struct blkid_struct_probe *pr = NULL;
536 list_for_each_entry(pr, &devices, list)
537 if (!strcasecmp(pr->uuid, uuid))
541 list_for_each_entry(pr, &devices, list)
542 if (!strcmp(pr->label, label))
546 list_for_each_entry(pr, &devices, list)
547 if (!strcmp(basename(pr->dev), basename(path)))
553 static char* find_mount_point(char *block)
555 FILE *fp = fopen("/proc/mounts", "r");
556 static char line[256];
557 int len = strlen(block);
563 while (fgets(line, sizeof(line), fp)) {
564 if (!strncmp(line, block, len)) {
565 char *p = &line[len + 1];
566 char *t = strstr(p, " ");
583 static void mkdir_p(char *dir)
585 char *l = strrchr(dir, '/');
595 static void check_filesystem(struct blkid_struct_probe *pr)
599 char *e2fsck = "/usr/sbin/e2fsck";
601 if (strncmp(pr->id->name, "ext", 3)) {
602 ERROR("check_filesystem: %s is not supported\n", pr->id->name);
606 if (stat(e2fsck, &statbuf) < 0) {
607 ERROR("check_filesystem: %s not found\n", e2fsck);
613 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
615 } else if (pid > 0) {
618 waitpid(pid, &status, 0);
619 if (WEXITSTATUS(status))
620 ERROR("check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
624 static void handle_swapfiles(bool on)
628 struct blkid_struct_probe *pr;
630 vlist_for_each_element(&mounts, m, node)
632 if (m->type != TYPE_SWAP || !m->target)
635 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
638 pr = _probe_path(m->target);
643 if (!strcmp(pr->id->name, "swap")) {
645 swapon(pr->dev, m->prio);
654 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
662 device = basename(pr->dev);
664 if (!strcmp(pr->id->name, "swap")) {
665 if (hotplug && !auto_swap)
667 m = find_swap(pr->uuid, pr->label, device);
669 swapon(pr->dev, (m) ? (m->prio) : (0));
674 if (hotplug && !auto_mount)
677 if (find_mount_point(pr->dev)) {
678 ERROR("%s is already mounted\n", pr->dev);
682 m = find_block(pr->uuid, pr->label, device, NULL);
687 char *target = m->target;
692 snprintf(_target, sizeof(_target), "/mnt/%s", device);
698 check_filesystem(pr);
700 err = mount(pr->dev, target, pr->id->name, m->flags,
701 (m->options) ? (m->options) : (""));
703 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
704 pr->dev, pr->id->name, target, err, strerror(err));
706 handle_swapfiles(true);
711 char target[] = "/mnt/mmcblk123";
714 snprintf(target, sizeof(target), "/mnt/%s", device);
718 check_filesystem(pr);
720 err = mount(pr->dev, target, pr->id->name, 0, "");
722 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
723 pr->dev, pr->id->name, target, err, strerror(err));
725 handle_swapfiles(true);
732 static int umount_device(struct blkid_struct_probe *pr)
735 char *device = basename(pr->dev);
742 if (!strcmp(pr->id->name, "swap"))
745 mp = find_mount_point(pr->dev);
749 m = find_block(pr->uuid, pr->label, device, NULL);
753 err = umount2(mp, MNT_DETACH);
755 ERROR("unmounting %s (%s) failed (%d) - %s\n",
756 pr->dev, mp, err, strerror(err));
758 ERROR("unmounted %s (%s)\n",
764 static int main_hotplug(int argc, char **argv)
767 char *action, *device, *mount_point;
769 action = getenv("ACTION");
770 device = getenv("DEVNAME");
772 if (!action || !device)
774 snprintf(path, sizeof(path), "/dev/%s", device);
776 if (!strcmp(action, "remove")) {
778 mount_point = find_mount_point(path);
780 err = umount2(mount_point, MNT_DETACH);
783 ERROR("umount of %s failed (%d) - %s\n",
784 mount_point, err, strerror(err));
787 } else if (strcmp(action, "add")) {
788 ERROR("Unkown action %s\n", action);
793 if (config_load(NULL))
797 return mount_device(find_block_info(NULL, NULL, path), 1);
800 static int find_block_mtd(char *name, char *part, int plen)
802 FILE *fp = fopen("/proc/mtd", "r");
803 static char line[256];
809 while (!index && fgets(line, sizeof(line), fp)) {
810 if (strstr(line, name)) {
811 char *eol = strstr(line, ":");
826 snprintf(part, plen, "/dev/mtdblock%s", index);
832 static int find_ubi_vol(libubi_t libubi, char *name, int *dev_num, int *vol_id)
836 while (ubi_dev_present(libubi, dev))
838 struct ubi_dev_info dev_info;
839 struct ubi_vol_info vol_info;
841 if (ubi_get_dev_info1(libubi, dev++, &dev_info))
843 if (ubi_get_vol_info1_nm(libubi, dev_info.dev_num, name, &vol_info))
846 *dev_num = dev_info.dev_num;
847 *vol_id = vol_info.vol_id;
855 static int find_block_ubi(libubi_t libubi, char *name, char *part, int plen)
861 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
863 snprintf(part, plen, "/dev/ubi%d_%d", dev_num, vol_id);
868 static int find_block_ubi_RO(libubi_t libubi, char *name, char *part, int plen)
874 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
876 snprintf(part, plen, "/dev/ubiblock%d_%d", dev_num, vol_id);
882 static int check_extroot(char *path)
884 struct blkid_struct_probe *pr = NULL;
888 if (find_block_mtd("rootfs", fs, sizeof(fs))) {
892 libubi = libubi_open();
893 err = find_block_ubi_RO(libubi, "rootfs", fs, sizeof(fs));
894 libubi_close(libubi);
899 if (find_block_mtd("rootfs", fs, sizeof(fs)))
903 list_for_each_entry(pr, &devices, list) {
904 if (!strcmp(pr->dev, fs)) {
908 char uuid[64] = { 0 };
910 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
912 fp = fopen(tag, "w+");
914 ERROR("extroot: failed to write uuid tag file\n");
915 /* return 0 to continue boot regardless of error */
923 fp = fopen(tag, "r");
925 ERROR("extroot: failed to open uuid tag file\n");
929 fgets(uuid, sizeof(uuid), fp);
931 if (!strcasecmp(uuid, pr->uuid))
933 ERROR("extroot: uuid tag does not match rom uuid\n");
940 * Read info about extroot from UCI (using prefix) and mount it.
942 static int mount_extroot(char *cfg)
944 char overlay[] = "/tmp/extroot/overlay";
945 char mnt[] = "/tmp/extroot/mnt";
947 struct blkid_struct_probe *pr;
951 /* Load @cfg/etc/config/fstab */
952 if (config_load(cfg))
955 /* See if there is extroot-specific mount config */
956 m = find_block(NULL, NULL, NULL, "/");
958 m = find_block(NULL, NULL, NULL, "/overlay");
960 if (!m || !m->extroot)
962 ERROR("extroot: no root or overlay mount defined\n");
966 /* Find block device pointed by the mount config */
967 pr = find_block_info(m->uuid, m->label, m->device);
969 if (!pr && delay_root){
970 ERROR("extroot: is not ready yet, retrying in %u seconds\n", delay_root);
974 pr = find_block_info(m->uuid, m->label, m->device);
977 if (strncmp(pr->id->name, "ext", 3)) {
978 ERROR("extroot: %s is not supported, try ext4\n", pr->id->name);
986 check_filesystem(pr);
988 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
991 ERROR("mounting %s (%s) as %s failed (%d) - %s\n",
992 pr->dev, pr->id->name, path, err, strerror(err));
993 } else if (m->overlay) {
994 err = check_extroot(path);
999 ERROR("extroot: cannot find block device\n");
1005 static int main_extroot(int argc, char **argv)
1007 struct blkid_struct_probe *pr;
1008 char fs[32] = { 0 };
1009 char blkdev_path[32] = { 0 };
1011 #ifdef UBIFS_EXTROOT
1015 if (!getenv("PREINIT"))
1019 fprintf(stderr, "Usage: block extroot mountpoint\n");
1027 * Make sure there is "rootfs" MTD partition or UBI volume.
1030 find_block_mtd("rootfs", fs, sizeof(fs));
1032 #ifdef UBIFS_EXTROOT
1033 libubi = libubi_open();
1034 find_block_ubi_RO(libubi, "rootfs", fs, sizeof(fs));
1035 libubi_close(libubi);
1037 ERROR("extroot: unable to locate rootfs mtdblock / ubiblock\n");
1041 ERROR("extroot: unable to locate rootfs mtdblock\n");
1046 pr = find_block_info(NULL, NULL, fs);
1048 ERROR("extroot: unable to retrieve rootfs information\n");
1053 * Look for "rootfs_data". We will want to mount it and check for
1054 * extroot configuration.
1057 /* Start with looking for MTD partition */
1058 find_block_mtd("rootfs_data", blkdev_path, sizeof(blkdev_path));
1059 if (blkdev_path[0]) {
1060 pr = find_block_info(NULL, NULL, blkdev_path);
1061 if (pr && !strcmp(pr->id->name, "jffs2")) {
1062 char cfg[] = "/tmp/jffs_cfg";
1065 * Mount MTD part and try extroot (using
1066 * /etc/config/fstab from that partition)
1069 if (!mount(blkdev_path, cfg, "jffs2", MS_NOATIME, NULL)) {
1070 err = mount_extroot(cfg);
1071 umount2(cfg, MNT_DETACH);
1074 rmdir("/tmp/overlay");
1080 #ifdef UBIFS_EXTROOT
1081 /* ... but it also could be an UBI volume */
1082 memset(blkdev_path, 0, sizeof(blkdev_path));
1083 libubi = libubi_open();
1084 find_block_ubi(libubi, "rootfs_data", blkdev_path, sizeof(blkdev_path));
1085 libubi_close(libubi);
1086 if (blkdev_path[0]) {
1087 char cfg[] = "/tmp/ubifs_cfg";
1089 /* Mount volume and try extroot (using fstab from that vol) */
1091 if (!mount(blkdev_path, cfg, "ubifs", MS_NOATIME, NULL)) {
1092 err = mount_extroot(cfg);
1093 umount2(cfg, MNT_DETACH);
1096 rmdir("/tmp/overlay");
1102 return mount_extroot(NULL);
1105 static int main_mount(int argc, char **argv)
1107 struct blkid_struct_probe *pr;
1109 if (config_load(NULL))
1113 list_for_each_entry(pr, &devices, list)
1114 mount_device(pr, 0);
1116 handle_swapfiles(true);
1121 static int main_umount(int argc, char **argv)
1123 struct blkid_struct_probe *pr;
1125 if (config_load(NULL))
1128 handle_swapfiles(false);
1131 list_for_each_entry(pr, &devices, list)
1137 static int main_detect(int argc, char **argv)
1139 struct blkid_struct_probe *pr;
1142 printf("config 'global'\n");
1143 printf("\toption\tanon_swap\t'0'\n");
1144 printf("\toption\tanon_mount\t'0'\n");
1145 printf("\toption\tauto_swap\t'1'\n");
1146 printf("\toption\tauto_mount\t'1'\n");
1147 printf("\toption\tdelay_root\t'5'\n");
1148 printf("\toption\tcheck_fs\t'0'\n\n");
1149 list_for_each_entry(pr, &devices, list)
1150 print_block_uci(pr);
1155 static int main_info(int argc, char **argv)
1158 struct blkid_struct_probe *pr;
1162 list_for_each_entry(pr, &devices, list)
1163 print_block_info(pr);
1168 for (i = 2; i < argc; i++) {
1171 if (stat(argv[i], &s)) {
1172 ERROR("failed to stat %s\n", argv[i]);
1175 if (!S_ISBLK(s.st_mode)) {
1176 ERROR("%s is not a block device\n", argv[i]);
1179 pr = find_block_info(NULL, NULL, argv[i]);
1181 print_block_info(pr);
1187 static int swapon_usage(void)
1189 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1190 "\tStart swapping on [DEVICE]\n"
1191 " -a\tStart swapping on all swap devices\n"
1192 " -p pri\tSet priority of swap device\n"
1193 " -s\tShow summary\n");
1197 static int main_swapon(int argc, char **argv)
1203 struct blkid_struct_probe *pr;
1209 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1212 fp = fopen("/proc/swaps", "r");
1216 ERROR("failed to open /proc/swaps\n");
1219 while (getline(&lineptr, &s, fp) > 0)
1227 list_for_each_entry(pr, &devices, list) {
1228 if (strcmp(pr->id->name, "swap"))
1230 if (swapon(pr->dev, 0))
1231 ERROR("failed to swapon %s\n", pr->dev);
1237 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1240 return swapon_usage();
1245 if (optind != (argc - 1))
1246 return swapon_usage();
1248 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1249 ERROR("%s is not a block device or file\n", argv[optind]);
1252 err = swapon(argv[optind], flags);
1254 ERROR("failed to swapon %s (%d)\n", argv[optind], err);
1261 static int main_swapoff(int argc, char **argv)
1264 ERROR("Usage: swapoff [-a] [DEVICE]\n\n"
1265 "\tStop swapping on DEVICE\n"
1266 " -a\tStop swapping on all swap devices\n");
1270 if (!strcmp(argv[1], "-a")) {
1271 FILE *fp = fopen("/proc/swaps", "r");
1275 ERROR("failed to open /proc/swaps\n");
1278 fgets(line, sizeof(line), fp);
1279 while (fgets(line, sizeof(line), fp)) {
1280 char *end = strchr(line, ' ');
1286 err = swapoff(line);
1288 ERROR("failed to swapoff %s (%d)\n", line, err);
1295 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1296 ERROR("%s is not a block device or file\n", argv[1]);
1299 err = swapoff(argv[1]);
1301 ERROR("fsiled to swapoff %s (%d)\n", argv[1], err);
1309 int main(int argc, char **argv)
1311 char *base = basename(*argv);
1315 if (!strcmp(base, "swapon"))
1316 return main_swapon(argc, argv);
1318 if (!strcmp(base, "swapoff"))
1319 return main_swapoff(argc, argv);
1321 if ((argc > 1) && !strcmp(base, "block")) {
1322 if (!strcmp(argv[1], "info"))
1323 return main_info(argc, argv);
1325 if (!strcmp(argv[1], "detect"))
1326 return main_detect(argc, argv);
1328 if (!strcmp(argv[1], "hotplug"))
1329 return main_hotplug(argc, argv);
1331 if (!strcmp(argv[1], "extroot"))
1332 return main_extroot(argc, argv);
1334 if (!strcmp(argv[1], "mount"))
1335 return main_mount(argc, argv);
1337 if (!strcmp(argv[1], "umount"))
1338 return main_umount(argc, argv);
1341 fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");