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.
28 #include <sys/types.h>
30 #include <sys/mount.h>
38 #include <libubox/ulog.h>
39 #include <libubox/list.h>
40 #include <libubox/vlist.h>
41 #include <libubox/blobmsg_json.h>
42 #include <libubox/avl-cmp.h>
47 #include "libubi/libubi.h"
56 struct vlist_node node;
72 static struct vlist_tree mounts;
73 static struct blob_buf b;
74 static LIST_HEAD(devices);
75 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
76 static unsigned int delay_root;
88 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
89 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
90 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
91 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
92 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
93 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
94 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
107 static const struct uci_blob_param_list config_attr_list = {
108 .n_params = __CFG_MAX,
109 .params = config_policy,
112 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
113 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
114 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
115 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
116 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
117 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
118 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
121 static const struct uci_blob_param_list mount_attr_list = {
122 .n_params = __MOUNT_MAX,
123 .params = mount_policy,
135 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
136 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
137 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
138 [SWAP_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
139 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
140 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
143 static const struct uci_blob_param_list swap_attr_list = {
144 .n_params = __SWAP_MAX,
145 .params = swap_policy,
153 static const struct mount_flag mount_flags[] = {
154 { "sync", MS_SYNCHRONOUS },
155 { "async", ~MS_SYNCHRONOUS },
156 { "dirsync", MS_DIRSYNC },
157 { "mand", MS_MANDLOCK },
158 { "nomand", ~MS_MANDLOCK },
159 { "atime", ~MS_NOATIME },
160 { "noatime", MS_NOATIME },
161 { "dev", ~MS_NODEV },
162 { "nodev", MS_NODEV },
163 { "diratime", ~MS_NODIRATIME },
164 { "nodiratime", MS_NODIRATIME },
165 { "exec", ~MS_NOEXEC },
166 { "noexec", MS_NOEXEC },
167 { "suid", ~MS_NOSUID },
168 { "nosuid", MS_NOSUID },
169 { "rw", ~MS_RDONLY },
171 { "relatime", MS_RELATIME },
172 { "norelatime", ~MS_RELATIME },
173 { "strictatime", MS_STRICTATIME },
174 { "acl", MS_POSIXACL },
175 { "noacl", ~MS_POSIXACL },
176 { "nouser_xattr", MS_NOUSER },
177 { "user_xattr", ~MS_NOUSER },
180 static char *blobmsg_get_strdup(struct blob_attr *attr)
185 return strdup(blobmsg_get_string(attr));
188 static char *blobmsg_get_basename(struct blob_attr *attr)
193 return strdup(basename(blobmsg_get_string(attr)));
196 static void parse_mount_options(struct mount *m, char *optstr)
200 char *p, *opts, *last;
205 if (!optstr || !*optstr)
208 m->options = opts = calloc(1, strlen(optstr) + 1);
221 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
222 if (!strcmp(last, mount_flags[i].name)) {
223 if (mount_flags[i].flag < 0)
224 m->flags &= (uint32_t)mount_flags[i].flag;
226 m->flags |= (uint32_t)mount_flags[i].flag;
233 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
242 static int mount_add(struct uci_section *s)
244 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
247 blob_buf_init(&b, 0);
248 uci_to_blob(&b, s, &mount_attr_list);
249 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
251 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
254 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
257 m = malloc(sizeof(struct mount));
258 m->type = TYPE_MOUNT;
259 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
260 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
261 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
262 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
264 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
266 m->overlay = m->extroot = 0;
267 if (m->target && !strcmp(m->target, "/"))
269 if (m->target && !strcmp(m->target, "/overlay"))
270 m->extroot = m->overlay = 1;
272 if (m->target && *m->target != '/') {
273 ULOG_WARN("ignoring mount section %s due to invalid target '%s'\n",
274 s->e.name, m->target);
280 vlist_add(&mounts, &m->node, m->uuid);
282 vlist_add(&mounts, &m->node, m->label);
284 vlist_add(&mounts, &m->node, m->device);
289 static int swap_add(struct uci_section *s)
291 struct blob_attr *tb[__SWAP_MAX] = { 0 };
294 blob_buf_init(&b, 0);
295 uci_to_blob(&b, s, &swap_attr_list);
296 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
298 if (!tb[SWAP_UUID] && !tb[SWAP_LABEL] && !tb[SWAP_DEVICE])
301 m = malloc(sizeof(struct mount));
302 memset(m, 0, sizeof(struct mount));
304 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
305 m->label = blobmsg_get_strdup(tb[SWAP_LABEL]);
306 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
308 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
310 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
312 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
313 /* store complete swap path */
315 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
318 vlist_add(&mounts, &m->node, m->uuid);
320 vlist_add(&mounts, &m->node, m->label);
322 vlist_add(&mounts, &m->node, m->device);
328 static int global_add(struct uci_section *s)
330 struct blob_attr *tb[__CFG_MAX] = { 0 };
332 blob_buf_init(&b, 0);
333 uci_to_blob(&b, s, &config_attr_list);
334 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
336 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
338 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
341 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
343 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
346 if (tb[CFG_DELAY_ROOT])
347 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
349 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
355 static struct mount* find_swap(const char *uuid, const char *label, const char *device)
359 vlist_for_each_element(&mounts, m, node) {
360 if (m->type != TYPE_SWAP)
362 if (uuid && m->uuid && !strcasecmp(m->uuid, uuid))
364 if (label && m->label && !strcmp(m->label, label))
366 if (device && m->device && !strcmp(m->device, device))
373 static struct mount* find_block(const char *uuid, const char *label, const char *device,
378 vlist_for_each_element(&mounts, m, node) {
379 if (m->type != TYPE_MOUNT)
381 if (m->uuid && uuid && !strcasecmp(m->uuid, uuid))
383 if (m->label && label && !strcmp(m->label, label))
385 if (m->target && target && !strcmp(m->target, target))
387 if (m->device && device && !strcmp(m->device, device))
394 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
395 struct vlist_node *node_old)
399 static struct uci_package * config_try_load(struct uci_context *ctx, char *path)
401 char *file = basename(path);
402 char *dir = dirname(path);
404 struct uci_package *pkg;
406 uci_set_confdir(ctx, dir);
407 ULOG_INFO("attempting to load %s/%s\n", dir, file);
409 if (uci_load(ctx, file, &pkg)) {
410 uci_get_errorstr(ctx, &err, file);
411 ULOG_ERR("unable to load configuration (%s)\n", err);
420 static int config_load(char *cfg)
422 struct uci_context *ctx = uci_alloc_context();
423 struct uci_package *pkg = NULL;
424 struct uci_element *e;
427 vlist_init(&mounts, avl_strcmp, mounts_update);
430 snprintf(path, sizeof(path), "%s/upper/etc/config/fstab", cfg);
431 pkg = config_try_load(ctx, path);
434 snprintf(path, sizeof(path), "%s/etc/config/fstab", cfg);
435 pkg = config_try_load(ctx, path);
440 snprintf(path, sizeof(path), "/etc/config/fstab");
441 pkg = config_try_load(ctx, path);
445 ULOG_ERR("no usable configuration\n");
449 vlist_update(&mounts);
450 uci_foreach_element(&pkg->sections, e) {
451 struct uci_section *s = uci_to_section(e);
453 if (!strcmp(s->type, "mount"))
455 if (!strcmp(s->type, "swap"))
457 if (!strcmp(s->type, "global"))
460 vlist_flush(&mounts);
465 static struct probe_info* _probe_path(char *path)
467 struct probe_info *pr;
470 /* skip ubi device if ubiblock device is present */
471 if (path[5] == 'u' && path[6] == 'b' && path[7] == 'i' &&
472 path[8] >= '0' && path[8] <= '9' ) {
473 snprintf(tmppath, sizeof(tmppath), "/dev/ubiblock%s", path + 8);
474 list_for_each_entry(pr, &devices, list)
475 if (!strcasecmp(pr->dev, tmppath))
479 return probe_path(path);
482 static int _cache_load(const char *path)
484 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
488 if (glob(path, gl_flags, NULL, &gl) < 0)
491 for (j = 0; j < gl.gl_pathc; j++) {
492 struct probe_info *pr = _probe_path(gl.gl_pathv[j]);
494 list_add_tail(&pr->list, &devices);
502 static void cache_load(int mtd)
505 _cache_load("/dev/mtdblock*");
506 _cache_load("/dev/ubiblock*");
507 _cache_load("/dev/ubi[0-9]*");
509 _cache_load("/dev/loop*");
510 _cache_load("/dev/mmcblk*");
511 _cache_load("/dev/sd*");
512 _cache_load("/dev/hd*");
513 _cache_load("/dev/md*");
514 _cache_load("/dev/vd*");
515 _cache_load("/dev/mapper/*");
519 static int print_block_uci(struct probe_info *pr)
521 if (!strcmp(pr->type, "swap")) {
522 printf("config 'swap'\n");
524 printf("config 'mount'\n");
525 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
528 printf("\toption\tuuid\t'%s'\n", pr->uuid);
530 printf("\toption\tdevice\t'%s'\n", pr->dev);
531 printf("\toption\tenabled\t'0'\n\n");
536 static struct probe_info* find_block_info(char *uuid, char *label, char *path)
538 struct probe_info *pr = NULL;
541 list_for_each_entry(pr, &devices, list)
542 if (pr->uuid && !strcasecmp(pr->uuid, uuid))
546 list_for_each_entry(pr, &devices, list)
547 if (pr->label && !strcmp(pr->label, label))
551 list_for_each_entry(pr, &devices, list)
552 if (pr->dev && !strcmp(basename(pr->dev), basename(path)))
558 static char* find_mount_point(char *block)
560 FILE *fp = fopen("/proc/self/mountinfo", "r");
561 static char line[256];
562 int len = strlen(block);
563 char *point = NULL, *pos, *tmp, *cpoint, *devname;
566 unsigned int minor, major;
571 rstat = stat(block, &s);
573 while (fgets(line, sizeof(line), fp)) {
574 pos = strchr(line, ' ');
578 pos = strchr(pos + 1, ' ');
583 pos = strchr(pos, ':');
590 pos = strchr(pos, ' ');
596 pos = strchr(pos + 1, ' ');
601 pos = strchr(pos, ' ');
607 pos = strchr(pos + 1, ' ');
611 pos = strchr(pos + 1, ' ');
615 pos = strchr(pos + 1, ' ');
620 pos = strchr(pos, ' ');
626 if (!strncmp(block, devname, len)) {
627 point = strdup(cpoint);
634 if (!S_ISBLK(s.st_mode))
637 if (major == major(s.st_rdev) &&
638 minor == minor(s.st_rdev)) {
639 point = strdup(cpoint);
649 static int print_block_info(struct probe_info *pr)
653 mp = find_mount_point(pr->dev);
654 printf("%s:", pr->dev);
656 printf(" UUID=\"%s\"", pr->uuid);
659 printf(" LABEL=\"%s\"", pr->label);
662 printf(" VERSION=\"%s\"", pr->version);
665 printf(" MOUNT=\"%s\"", mp);
669 printf(" TYPE=\"%s\"\n", pr->type);
674 static void mkdir_p(char *dir)
676 char *l = strrchr(dir, '/');
686 static void check_filesystem(struct probe_info *pr)
690 const char *e2fsck = "/usr/sbin/e2fsck";
691 const char *dosfsck = "/usr/sbin/dosfsck";
694 /* UBIFS does not need stuff like fsck */
695 if (!strncmp(pr->type, "ubifs", 5))
698 if (!strncmp(pr->type, "vfat", 4)) {
700 } else if (!strncmp(pr->type, "ext", 3)) {
703 ULOG_ERR("check_filesystem: %s is not supported\n", pr->type);
707 if (stat(ckfs, &statbuf) < 0) {
708 ULOG_ERR("check_filesystem: %s not found\n", ckfs);
714 execl(ckfs, ckfs, "-p", pr->dev, NULL);
716 } else if (pid > 0) {
719 waitpid(pid, &status, 0);
720 if (WEXITSTATUS(status))
721 ULOG_ERR("check_filesystem: %s returned %d\n", ckfs, WEXITSTATUS(status));
725 static void handle_swapfiles(bool on)
729 struct probe_info *pr;
731 vlist_for_each_element(&mounts, m, node)
733 if (m->type != TYPE_SWAP || !m->target)
736 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
739 pr = _probe_path(m->target);
744 if (!strcmp(pr->type, "swap")) {
746 swapon(pr->dev, m->prio);
755 static int mount_device(struct probe_info *pr, int hotplug)
764 device = basename(pr->dev);
766 if (!strcmp(pr->type, "swap")) {
767 if (hotplug && !auto_swap)
769 m = find_swap(pr->uuid, pr->label, device);
771 swapon(pr->dev, (m) ? (m->prio) : (0));
776 if (hotplug && !auto_mount)
779 mp = find_mount_point(pr->dev);
781 ULOG_ERR("%s is already mounted on %s\n", pr->dev, mp);
786 m = find_block(pr->uuid, pr->label, device, NULL);
791 char *target = m->target;
796 snprintf(_target, sizeof(_target), "/mnt/%s", device);
802 check_filesystem(pr);
804 err = mount(pr->dev, target, pr->type, m->flags,
805 (m->options) ? (m->options) : (""));
807 ULOG_ERR("mounting %s (%s) as %s failed (%d) - %s\n",
808 pr->dev, pr->type, target, errno, strerror(errno));
810 handle_swapfiles(true);
818 snprintf(target, sizeof(target), "/mnt/%s", device);
822 check_filesystem(pr);
824 err = mount(pr->dev, target, pr->type, 0, "");
826 ULOG_ERR("mounting %s (%s) as %s failed (%d) - %s\n",
827 pr->dev, pr->type, target, errno, strerror(errno));
829 handle_swapfiles(true);
836 static int umount_device(struct probe_info *pr)
839 char *device = basename(pr->dev);
846 if (!strcmp(pr->type, "swap"))
849 mp = find_mount_point(pr->dev);
853 m = find_block(pr->uuid, pr->label, device, NULL);
857 err = umount2(mp, MNT_DETACH);
859 ULOG_ERR("unmounting %s (%s) failed (%d) - %s\n",
860 pr->dev, mp, errno, strerror(errno));
862 ULOG_INFO("unmounted %s (%s)\n",
869 static int main_hotplug(int argc, char **argv)
872 char *action, *device, *mount_point;
874 action = getenv("ACTION");
875 device = getenv("DEVNAME");
877 if (!action || !device)
879 snprintf(path, sizeof(path), "/dev/%s", device);
881 if (!strcmp(action, "remove")) {
883 mount_point = find_mount_point(path);
885 err = umount2(mount_point, MNT_DETACH);
888 ULOG_ERR("umount of %s failed (%d) - %s\n",
889 mount_point, errno, strerror(errno));
893 } else if (strcmp(action, "add")) {
894 ULOG_ERR("Unkown action %s\n", action);
899 if (config_load(NULL))
903 return mount_device(find_block_info(NULL, NULL, path), 1);
906 static int find_block_mtd(char *name, char *part, int plen)
908 FILE *fp = fopen("/proc/mtd", "r");
909 static char line[256];
915 while (!index && fgets(line, sizeof(line), fp)) {
916 if (strstr(line, name)) {
917 char *eol = strstr(line, ":");
932 snprintf(part, plen, "/dev/mtdblock%s", index);
938 static int find_ubi_vol(libubi_t libubi, char *name, int *dev_num, int *vol_id)
942 while (ubi_dev_present(libubi, dev))
944 struct ubi_dev_info dev_info;
945 struct ubi_vol_info vol_info;
947 if (ubi_get_dev_info1(libubi, dev++, &dev_info))
949 if (ubi_get_vol_info1_nm(libubi, dev_info.dev_num, name, &vol_info))
952 *dev_num = dev_info.dev_num;
953 *vol_id = vol_info.vol_id;
961 static int find_block_ubi(libubi_t libubi, char *name, char *part, int plen)
967 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
969 snprintf(part, plen, "/dev/ubi%d_%d", dev_num, vol_id);
974 static int find_block_ubi_RO(libubi_t libubi, char *name, char *part, int plen)
980 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
982 snprintf(part, plen, "/dev/ubiblock%d_%d", dev_num, vol_id);
989 static int find_root_dev(char *buf, int len)
999 if (!(d = opendir("/dev")))
1004 while ((e = readdir(d)) != NULL) {
1005 snprintf(buf, len, "/dev/%s", e->d_name);
1007 if (stat(buf, &s) || s.st_rdev != root)
1020 static int test_fs_support(const char *name)
1026 if ((f = fopen("/proc/filesystems", "r")) != NULL) {
1027 while (fgets(line, sizeof(line), f)) {
1028 p = strtok(line, "\t\n");
1030 if (p && !strcmp(p, "nodev"))
1031 p = strtok(NULL, "\t\n");
1033 if (p && !strcmp(p, name)) {
1044 static int check_extroot(char *path)
1046 struct probe_info *pr = NULL;
1049 #ifdef UBIFS_EXTROOT
1050 if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
1054 libubi = libubi_open();
1055 err = find_block_ubi_RO(libubi, "rootfs", devpath, sizeof(devpath));
1056 libubi_close(libubi);
1061 if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
1062 if (find_root_dev(devpath, sizeof(devpath))) {
1063 ULOG_ERR("extroot: unable to determine root device\n");
1069 list_for_each_entry(pr, &devices, list) {
1070 if (!strcmp(pr->dev, devpath)) {
1074 char uuid[64] = { 0 };
1076 snprintf(tag, sizeof(tag), "%s/etc", path);
1080 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
1081 if (stat(tag, &s)) {
1082 fp = fopen(tag, "w+");
1084 ULOG_ERR("extroot: failed to write UUID to %s: %d (%s)\n",
1085 tag, errno, strerror(errno));
1086 /* return 0 to continue boot regardless of error */
1089 fputs(pr->uuid, fp);
1094 fp = fopen(tag, "r");
1096 ULOG_ERR("extroot: failed to read UUID from %s: %d (%s)\n",
1097 tag, errno, strerror(errno));
1101 if (!fgets(uuid, sizeof(uuid), fp))
1102 ULOG_ERR("extroot: failed to read UUID from %s: %d (%s)\n",
1103 tag, errno, strerror(errno));
1106 if (*uuid && !strcasecmp(uuid, pr->uuid))
1109 ULOG_ERR("extroot: UUID mismatch (root: %s, %s: %s)\n",
1110 pr->uuid, basename(path), uuid);
1115 ULOG_ERR("extroot: unable to lookup root device %s\n", devpath);
1120 * Read info about extroot from UCI (using prefix) and mount it.
1122 static int mount_extroot(char *cfg)
1124 char overlay[] = "/tmp/extroot/overlay";
1125 char mnt[] = "/tmp/extroot/mnt";
1127 struct probe_info *pr;
1131 /* Load @cfg/etc/config/fstab */
1132 if (config_load(cfg))
1135 /* See if there is extroot-specific mount config */
1136 m = find_block(NULL, NULL, NULL, "/");
1138 m = find_block(NULL, NULL, NULL, "/overlay");
1140 if (!m || !m->extroot)
1142 ULOG_INFO("extroot: not configured\n");
1146 /* Find block device pointed by the mount config */
1147 pr = find_block_info(m->uuid, m->label, m->device);
1149 if (!pr && delay_root){
1150 ULOG_INFO("extroot: device not present, retrying in %u seconds\n", delay_root);
1154 pr = find_block_info(m->uuid, m->label, m->device);
1157 if (strncmp(pr->type, "ext", 3) &&
1158 strncmp(pr->type, "ubifs", 5)) {
1159 ULOG_ERR("extroot: unsupported filesystem %s, try ext4\n", pr->type);
1163 if (test_fs_support(pr->type)) {
1164 ULOG_ERR("extroot: filesystem %s not supported by kernel\n", pr->type);
1173 check_filesystem(pr);
1175 err = mount(pr->dev, path, pr->type, m->flags,
1176 (m->options) ? (m->options) : (""));
1179 ULOG_ERR("extroot: mounting %s (%s) on %s failed: %d (%s)\n",
1180 pr->dev, pr->type, path, errno, strerror(errno));
1181 } else if (m->overlay) {
1182 err = check_extroot(path);
1187 ULOG_ERR("extroot: cannot find device %s%s\n",
1188 (m->uuid ? "with UUID " : (m->label ? "with label " : "")),
1189 (m->uuid ? m->uuid : (m->label ? m->label : m->device)));
1195 static int main_extroot(int argc, char **argv)
1197 struct probe_info *pr;
1198 char blkdev_path[32] = { 0 };
1200 #ifdef UBIFS_EXTROOT
1204 if (!getenv("PREINIT"))
1208 ULOG_ERR("Usage: block extroot\n");
1215 /* enable LOG_INFO messages */
1216 ulog_threshold(LOG_INFO);
1219 * Look for "rootfs_data". We will want to mount it and check for
1220 * extroot configuration.
1223 /* Start with looking for MTD partition */
1224 find_block_mtd("\"rootfs_data\"", blkdev_path, sizeof(blkdev_path));
1225 if (blkdev_path[0]) {
1226 pr = find_block_info(NULL, NULL, blkdev_path);
1227 if (pr && !strcmp(pr->type, "jffs2")) {
1228 char cfg[] = "/tmp/jffs_cfg";
1231 * Mount MTD part and try extroot (using
1232 * /etc/config/fstab from that partition)
1235 if (!mount(blkdev_path, cfg, "jffs2", MS_NOATIME, NULL)) {
1236 err = mount_extroot(cfg);
1237 umount2(cfg, MNT_DETACH);
1240 rmdir("/tmp/overlay");
1246 #ifdef UBIFS_EXTROOT
1247 /* ... but it also could be an UBI volume */
1248 memset(blkdev_path, 0, sizeof(blkdev_path));
1249 libubi = libubi_open();
1250 find_block_ubi(libubi, "rootfs_data", blkdev_path, sizeof(blkdev_path));
1251 libubi_close(libubi);
1252 if (blkdev_path[0]) {
1253 char cfg[] = "/tmp/ubifs_cfg";
1255 /* Mount volume and try extroot (using fstab from that vol) */
1257 if (!mount(blkdev_path, cfg, "ubifs", MS_NOATIME, NULL)) {
1258 err = mount_extroot(cfg);
1259 umount2(cfg, MNT_DETACH);
1262 rmdir("/tmp/overlay");
1268 return mount_extroot(NULL);
1271 static int main_mount(int argc, char **argv)
1273 struct probe_info *pr;
1275 if (config_load(NULL))
1279 list_for_each_entry(pr, &devices, list)
1280 mount_device(pr, 0);
1282 handle_swapfiles(true);
1287 static int main_umount(int argc, char **argv)
1289 struct probe_info *pr;
1291 if (config_load(NULL))
1294 handle_swapfiles(false);
1297 list_for_each_entry(pr, &devices, list)
1303 static int main_detect(int argc, char **argv)
1305 struct probe_info *pr;
1308 printf("config 'global'\n");
1309 printf("\toption\tanon_swap\t'0'\n");
1310 printf("\toption\tanon_mount\t'0'\n");
1311 printf("\toption\tauto_swap\t'1'\n");
1312 printf("\toption\tauto_mount\t'1'\n");
1313 printf("\toption\tdelay_root\t'5'\n");
1314 printf("\toption\tcheck_fs\t'0'\n\n");
1315 list_for_each_entry(pr, &devices, list)
1316 print_block_uci(pr);
1321 static int main_info(int argc, char **argv)
1324 struct probe_info *pr;
1328 list_for_each_entry(pr, &devices, list)
1329 print_block_info(pr);
1334 for (i = 2; i < argc; i++) {
1337 if (stat(argv[i], &s)) {
1338 ULOG_ERR("failed to stat %s\n", argv[i]);
1341 if (!S_ISBLK(s.st_mode) && !(S_ISCHR(s.st_mode) && major(s.st_rdev) == 250)) {
1342 ULOG_ERR("%s is not a block device\n", argv[i]);
1345 pr = find_block_info(NULL, NULL, argv[i]);
1347 print_block_info(pr);
1353 static int swapon_usage(void)
1355 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1356 "\tStart swapping on [DEVICE]\n"
1357 " -a\tStart swapping on all swap devices\n"
1358 " -p pri\tSet priority of swap device\n"
1359 " -s\tShow summary\n");
1363 static int main_swapon(int argc, char **argv)
1369 struct probe_info *pr;
1375 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1378 fp = fopen("/proc/swaps", "r");
1382 ULOG_ERR("failed to open /proc/swaps\n");
1385 while (getline(&lineptr, &s, fp) > 0)
1386 printf("%s", lineptr);
1393 list_for_each_entry(pr, &devices, list) {
1394 if (strcmp(pr->type, "swap"))
1396 if (swapon(pr->dev, 0))
1397 ULOG_ERR("failed to swapon %s\n", pr->dev);
1403 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1406 return swapon_usage();
1411 if (optind != (argc - 1))
1412 return swapon_usage();
1414 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1415 ULOG_ERR("%s is not a block device or file\n", argv[optind]);
1418 err = swapon(argv[optind], flags);
1420 ULOG_ERR("failed to swapon %s (%d)\n", argv[optind], err);
1427 static int main_swapoff(int argc, char **argv)
1430 ULOG_ERR("Usage: swapoff [-a] [DEVICE]\n\n"
1431 "\tStop swapping on DEVICE\n"
1432 " -a\tStop swapping on all swap devices\n");
1436 if (!strcmp(argv[1], "-a")) {
1437 FILE *fp = fopen("/proc/swaps", "r");
1441 ULOG_ERR("failed to open /proc/swaps\n");
1444 if (fgets(line, sizeof(line), fp))
1445 while (fgets(line, sizeof(line), fp)) {
1446 char *end = strchr(line, ' ');
1452 err = swapoff(line);
1454 ULOG_ERR("failed to swapoff %s (%d)\n", line, err);
1461 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1462 ULOG_ERR("%s is not a block device or file\n", argv[1]);
1465 err = swapoff(argv[1]);
1467 ULOG_ERR("failed to swapoff %s (%d)\n", argv[1], err);
1475 int main(int argc, char **argv)
1477 char *base = basename(*argv);
1481 ulog_open(-1, -1, "block");
1482 ulog_threshold(LOG_NOTICE);
1484 if (!strcmp(base, "swapon"))
1485 return main_swapon(argc, argv);
1487 if (!strcmp(base, "swapoff"))
1488 return main_swapoff(argc, argv);
1490 if ((argc > 1) && !strcmp(base, "block")) {
1491 if (!strcmp(argv[1], "info"))
1492 return main_info(argc, argv);
1494 if (!strcmp(argv[1], "detect"))
1495 return main_detect(argc, argv);
1497 if (!strcmp(argv[1], "hotplug"))
1498 return main_hotplug(argc, argv);
1500 if (!strcmp(argv[1], "extroot"))
1501 return main_extroot(argc, argv);
1503 if (!strcmp(argv[1], "mount"))
1504 return main_mount(argc, argv);
1506 if (!strcmp(argv[1], "umount"))
1507 return main_umount(argc, argv);
1509 if (!strcmp(argv[1], "remount")) {
1510 int ret = main_umount(argc, argv);
1513 ret = main_mount(argc, argv);
1518 ULOG_ERR("Usage: block <info|mount|umount|detect>\n");