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.
27 #include <sys/types.h>
29 #include <sys/mount.h>
35 #include <libubox/ulog.h>
36 #include <libubox/list.h>
37 #include <libubox/vlist.h>
38 #include <libubox/blobmsg_json.h>
39 #include <libubox/avl-cmp.h>
41 #include "libblkid-tiny/libblkid-tiny.h"
44 #include "libubi/libubi.h"
53 struct vlist_node node;
69 static struct vlist_tree mounts;
70 static struct blob_buf b;
71 static LIST_HEAD(devices);
72 static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
73 static unsigned int delay_root;
85 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
86 [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
87 [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
88 [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
89 [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
90 [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
91 [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
104 static const struct uci_blob_param_list config_attr_list = {
105 .n_params = __CFG_MAX,
106 .params = config_policy,
109 static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
110 [MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
111 [MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
112 [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
113 [MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
114 [MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
115 [MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
118 static const struct uci_blob_param_list mount_attr_list = {
119 .n_params = __MOUNT_MAX,
120 .params = mount_policy,
132 static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
133 [SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
134 [SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
135 [SWAP_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
136 [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
137 [SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
140 static const struct uci_blob_param_list swap_attr_list = {
141 .n_params = __SWAP_MAX,
142 .params = swap_policy,
151 # define MS_DIRSYNC (1 << 7)
155 # define MS_RELATIME (1 << 21)
158 #ifndef MS_STRICTATIME
159 # define MS_STRICTATIME (1 << 24)
162 static const struct mount_flag mount_flags[] = {
163 { "sync", MS_SYNCHRONOUS },
164 { "async", ~MS_SYNCHRONOUS },
165 { "dirsync", MS_DIRSYNC },
166 { "mand", MS_MANDLOCK },
167 { "nomand", ~MS_MANDLOCK },
168 { "atime", ~MS_NOATIME },
169 { "noatime", MS_NOATIME },
170 { "dev", ~MS_NODEV },
171 { "nodev", MS_NODEV },
172 { "diratime", ~MS_NODIRATIME },
173 { "nodiratime", MS_NODIRATIME },
174 { "exec", ~MS_NOEXEC },
175 { "noexec", MS_NOEXEC },
176 { "suid", ~MS_NOSUID },
177 { "nosuid", MS_NOSUID },
178 { "rw", ~MS_RDONLY },
180 { "relatime", MS_RELATIME },
181 { "norelatime", ~MS_RELATIME },
182 { "strictatime", MS_STRICTATIME },
185 static char *blobmsg_get_strdup(struct blob_attr *attr)
190 return strdup(blobmsg_get_string(attr));
193 static char *blobmsg_get_basename(struct blob_attr *attr)
198 return strdup(basename(blobmsg_get_string(attr)));
201 static void parse_mount_options(struct mount *m, char *optstr)
205 char *p, *opts, *last;
210 if (!optstr || !*optstr)
213 m->options = opts = calloc(1, strlen(optstr) + 1);
226 for (i = 0, is_flag = false; i < ARRAY_SIZE(mount_flags); i++) {
227 if (!strcmp(last, mount_flags[i].name)) {
228 if (mount_flags[i].flag < 0)
229 m->flags &= (uint32_t)mount_flags[i].flag;
231 m->flags |= (uint32_t)mount_flags[i].flag;
238 opts += sprintf(opts, "%s%s", (opts > m->options) ? "," : "", last);
247 static int mount_add(struct uci_section *s)
249 struct blob_attr *tb[__MOUNT_MAX] = { 0 };
252 blob_buf_init(&b, 0);
253 uci_to_blob(&b, s, &mount_attr_list);
254 blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
256 if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
259 if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
262 m = malloc(sizeof(struct mount));
263 m->type = TYPE_MOUNT;
264 m->uuid = blobmsg_get_strdup(tb[MOUNT_UUID]);
265 m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
266 m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
267 m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
269 parse_mount_options(m, blobmsg_get_strdup(tb[MOUNT_OPTIONS]));
271 m->overlay = m->extroot = 0;
272 if (m->target && !strcmp(m->target, "/"))
274 if (m->target && !strcmp(m->target, "/overlay"))
275 m->extroot = m->overlay = 1;
277 if (m->target && *m->target != '/') {
278 ULOG_WARN("ignoring mount section %s due to invalid target '%s'\n",
279 s->e.name, m->target);
285 vlist_add(&mounts, &m->node, m->uuid);
287 vlist_add(&mounts, &m->node, m->label);
289 vlist_add(&mounts, &m->node, m->device);
294 static int swap_add(struct uci_section *s)
296 struct blob_attr *tb[__SWAP_MAX] = { 0 };
299 blob_buf_init(&b, 0);
300 uci_to_blob(&b, s, &swap_attr_list);
301 blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
303 if (!tb[SWAP_UUID] && !tb[SWAP_LABEL] && !tb[SWAP_DEVICE])
306 m = malloc(sizeof(struct mount));
307 memset(m, 0, sizeof(struct mount));
309 m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
310 m->label = blobmsg_get_strdup(tb[SWAP_LABEL]);
311 m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
313 m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
315 m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
317 if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE])) {
318 /* store complete swap path */
320 m->target = blobmsg_get_strdup(tb[SWAP_DEVICE]);
323 vlist_add(&mounts, &m->node, m->uuid);
325 vlist_add(&mounts, &m->node, m->label);
327 vlist_add(&mounts, &m->node, m->device);
333 static int global_add(struct uci_section *s)
335 struct blob_attr *tb[__CFG_MAX] = { 0 };
337 blob_buf_init(&b, 0);
338 uci_to_blob(&b, s, &config_attr_list);
339 blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
341 if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
343 if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
346 if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
348 if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
351 if (tb[CFG_DELAY_ROOT])
352 delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
354 if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
360 static struct mount* find_swap(const char *uuid, const char *label, const char *device)
364 vlist_for_each_element(&mounts, m, node) {
365 if (m->type != TYPE_SWAP)
367 if (uuid && m->uuid && !strcasecmp(m->uuid, uuid))
369 if (label && m->label && !strcmp(m->label, label))
371 if (device && m->device && !strcmp(m->device, device))
378 static struct mount* find_block(const char *uuid, const char *label, const char *device,
383 vlist_for_each_element(&mounts, m, node) {
384 if (m->type != TYPE_MOUNT)
386 if (m->uuid && uuid && !strcasecmp(m->uuid, uuid))
388 if (m->label && label && !strcmp(m->label, label))
390 if (m->target && target && !strcmp(m->target, target))
392 if (m->device && device && !strcmp(m->device, device))
399 static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
400 struct vlist_node *node_old)
404 static struct uci_package * config_try_load(struct uci_context *ctx, char *path)
406 char *file = basename(path);
407 char *dir = dirname(path);
409 struct uci_package *pkg;
411 uci_set_confdir(ctx, dir);
412 ULOG_INFO("attempting to load %s/%s\n", dir, file);
414 if (uci_load(ctx, file, &pkg)) {
415 uci_get_errorstr(ctx, &err, file);
416 ULOG_ERR("unable to load configuration (%s)\n", err);
425 static int config_load(char *cfg)
427 struct uci_context *ctx = uci_alloc_context();
428 struct uci_package *pkg = NULL;
429 struct uci_element *e;
432 vlist_init(&mounts, avl_strcmp, mounts_update);
435 snprintf(path, sizeof(path), "%s/upper/etc/config/fstab", cfg);
436 pkg = config_try_load(ctx, path);
439 snprintf(path, sizeof(path), "%s/etc/config/fstab", cfg);
440 pkg = config_try_load(ctx, path);
445 snprintf(path, sizeof(path), "/etc/config/fstab");
446 pkg = config_try_load(ctx, path);
450 ULOG_ERR("no usable configuration\n");
454 vlist_update(&mounts);
455 uci_foreach_element(&pkg->sections, e) {
456 struct uci_section *s = uci_to_section(e);
458 if (!strcmp(s->type, "mount"))
460 if (!strcmp(s->type, "swap"))
462 if (!strcmp(s->type, "global"))
465 vlist_flush(&mounts);
470 static struct blkid_struct_probe* _probe_path(char *path)
472 struct blkid_struct_probe *pr;
474 pr = malloc(sizeof(*pr));
479 memset(pr, 0, sizeof(*pr));
480 probe_block(path, pr);
482 if (pr->err || !pr->id) {
490 static int _cache_load(const char *path)
492 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
496 if (glob(path, gl_flags, NULL, &gl) < 0)
499 for (j = 0; j < gl.gl_pathc; j++) {
500 struct blkid_struct_probe *pr = _probe_path(gl.gl_pathv[j]);
502 list_add_tail(&pr->list, &devices);
510 static void cache_load(int mtd)
513 _cache_load("/dev/mtdblock*");
514 _cache_load("/dev/ubiblock*");
515 _cache_load("/dev/ubi?*_?*");
517 _cache_load("/dev/mmcblk*");
518 _cache_load("/dev/sd*");
519 _cache_load("/dev/hd*");
520 _cache_load("/dev/md*");
521 _cache_load("/dev/vd*");
522 _cache_load("/dev/mapper/*");
525 static int print_block_info(struct blkid_struct_probe *pr)
527 printf("%s:", pr->dev);
529 printf(" UUID=\"%s\"", pr->uuid);
532 printf(" LABEL=\"%s\"", pr->label);
535 printf(" NAME=\"%s\"", pr->name);
538 printf(" VERSION=\"%s\"", pr->version);
540 printf(" TYPE=\"%s\"\n", pr->id->name);
545 static int print_block_uci(struct blkid_struct_probe *pr)
547 if (!strcmp(pr->id->name, "swap")) {
548 printf("config 'swap'\n");
550 printf("config 'mount'\n");
551 printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
554 printf("\toption\tuuid\t'%s'\n", pr->uuid);
556 printf("\toption\tdevice\t'%s'\n", pr->dev);
557 printf("\toption\tenabled\t'0'\n\n");
562 static struct blkid_struct_probe* find_block_info(char *uuid, char *label, char *path)
564 struct blkid_struct_probe *pr = NULL;
567 list_for_each_entry(pr, &devices, list)
568 if (!strcasecmp(pr->uuid, uuid))
572 list_for_each_entry(pr, &devices, list)
573 if (!strcmp(pr->label, label))
577 list_for_each_entry(pr, &devices, list)
578 if (!strcmp(basename(pr->dev), basename(path)))
584 static char* find_mount_point(char *block)
586 FILE *fp = fopen("/proc/mounts", "r");
587 static char line[256];
588 int len = strlen(block);
594 while (fgets(line, sizeof(line), fp)) {
595 if (!strncmp(line, block, len)) {
596 char *p = &line[len + 1];
597 char *t = strstr(p, " ");
614 static void mkdir_p(char *dir)
616 char *l = strrchr(dir, '/');
626 static void check_filesystem(struct blkid_struct_probe *pr)
630 char *e2fsck = "/usr/sbin/e2fsck";
632 /* UBIFS does not need stuff like fsck */
633 if (!strncmp(pr->id->name, "ubifs", 5))
636 if (strncmp(pr->id->name, "ext", 3)) {
637 ULOG_ERR("check_filesystem: %s is not supported\n", pr->id->name);
641 if (stat(e2fsck, &statbuf) < 0) {
642 ULOG_ERR("check_filesystem: %s not found\n", e2fsck);
648 execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
650 } else if (pid > 0) {
653 waitpid(pid, &status, 0);
654 if (WEXITSTATUS(status))
655 ULOG_ERR("check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
659 static void handle_swapfiles(bool on)
663 struct blkid_struct_probe *pr;
665 vlist_for_each_element(&mounts, m, node)
667 if (m->type != TYPE_SWAP || !m->target)
670 if (stat(m->target, &s) || !S_ISREG(s.st_mode))
673 pr = _probe_path(m->target);
678 if (!strcmp(pr->id->name, "swap")) {
680 swapon(pr->dev, m->prio);
689 static int mount_device(struct blkid_struct_probe *pr, int hotplug)
697 device = basename(pr->dev);
699 if (!strcmp(pr->id->name, "swap")) {
700 if (hotplug && !auto_swap)
702 m = find_swap(pr->uuid, pr->label, device);
704 swapon(pr->dev, (m) ? (m->prio) : (0));
709 if (hotplug && !auto_mount)
712 if (find_mount_point(pr->dev)) {
713 ULOG_ERR("%s is already mounted\n", pr->dev);
717 m = find_block(pr->uuid, pr->label, device, NULL);
722 char *target = m->target;
727 snprintf(_target, sizeof(_target), "/mnt/%s", device);
733 check_filesystem(pr);
735 err = mount(pr->dev, target, pr->id->name, m->flags,
736 (m->options) ? (m->options) : (""));
738 ULOG_ERR("mounting %s (%s) as %s failed (%d) - %s\n",
739 pr->dev, pr->id->name, target, err, strerror(err));
741 handle_swapfiles(true);
746 char target[] = "/mnt/mmcblk123";
749 snprintf(target, sizeof(target), "/mnt/%s", device);
753 check_filesystem(pr);
755 err = mount(pr->dev, target, pr->id->name, 0, "");
757 ULOG_ERR("mounting %s (%s) as %s failed (%d) - %s\n",
758 pr->dev, pr->id->name, target, err, strerror(err));
760 handle_swapfiles(true);
767 static int umount_device(struct blkid_struct_probe *pr)
770 char *device = basename(pr->dev);
777 if (!strcmp(pr->id->name, "swap"))
780 mp = find_mount_point(pr->dev);
784 m = find_block(pr->uuid, pr->label, device, NULL);
788 err = umount2(mp, MNT_DETACH);
790 ULOG_ERR("unmounting %s (%s) failed (%d) - %s\n",
791 pr->dev, mp, err, strerror(err));
793 ULOG_INFO("unmounted %s (%s)\n",
799 static int main_hotplug(int argc, char **argv)
802 char *action, *device, *mount_point;
804 action = getenv("ACTION");
805 device = getenv("DEVNAME");
807 if (!action || !device)
809 snprintf(path, sizeof(path), "/dev/%s", device);
811 if (!strcmp(action, "remove")) {
813 mount_point = find_mount_point(path);
815 err = umount2(mount_point, MNT_DETACH);
818 ULOG_ERR("umount of %s failed (%d) - %s\n",
819 mount_point, err, strerror(err));
822 } else if (strcmp(action, "add")) {
823 ULOG_ERR("Unkown action %s\n", action);
828 if (config_load(NULL))
832 return mount_device(find_block_info(NULL, NULL, path), 1);
835 static int find_block_mtd(char *name, char *part, int plen)
837 FILE *fp = fopen("/proc/mtd", "r");
838 static char line[256];
844 while (!index && fgets(line, sizeof(line), fp)) {
845 if (strstr(line, name)) {
846 char *eol = strstr(line, ":");
861 snprintf(part, plen, "/dev/mtdblock%s", index);
867 static int find_ubi_vol(libubi_t libubi, char *name, int *dev_num, int *vol_id)
871 while (ubi_dev_present(libubi, dev))
873 struct ubi_dev_info dev_info;
874 struct ubi_vol_info vol_info;
876 if (ubi_get_dev_info1(libubi, dev++, &dev_info))
878 if (ubi_get_vol_info1_nm(libubi, dev_info.dev_num, name, &vol_info))
881 *dev_num = dev_info.dev_num;
882 *vol_id = vol_info.vol_id;
890 static int find_block_ubi(libubi_t libubi, char *name, char *part, int plen)
896 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
898 snprintf(part, plen, "/dev/ubi%d_%d", dev_num, vol_id);
903 static int find_block_ubi_RO(libubi_t libubi, char *name, char *part, int plen)
909 err = find_ubi_vol(libubi, name, &dev_num, &vol_id);
911 snprintf(part, plen, "/dev/ubiblock%d_%d", dev_num, vol_id);
918 static int find_root_dev(char *buf, int len)
928 if (!(d = opendir("/dev")))
933 while ((e = readdir(d)) != NULL) {
934 snprintf(buf, len, "/dev/%s", e->d_name);
936 if (stat(buf, &s) || s.st_rdev != root)
949 static int test_fs_support(const char *name)
955 if ((f = fopen("/proc/filesystems", "r")) != NULL) {
956 while (fgets(line, sizeof(line), f)) {
957 p = strtok(line, "\t\n");
959 if (p && !strcmp(p, "nodev"))
960 p = strtok(NULL, "\t\n");
962 if (p && !strcmp(p, name)) {
973 static int check_extroot(char *path)
975 struct blkid_struct_probe *pr = NULL;
979 if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
983 libubi = libubi_open();
984 err = find_block_ubi_RO(libubi, "rootfs", devpath, sizeof(devpath));
985 libubi_close(libubi);
990 if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
991 if (find_root_dev(devpath, sizeof(devpath))) {
992 ULOG_ERR("extroot: unable to determine root device\n");
998 list_for_each_entry(pr, &devices, list) {
999 if (!strcmp(pr->dev, devpath)) {
1003 char uuid[64] = { 0 };
1005 snprintf(tag, sizeof(tag), "%s/etc", path);
1009 snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
1010 if (stat(tag, &s)) {
1011 fp = fopen(tag, "w+");
1013 ULOG_ERR("extroot: failed to write UUID to %s: %d (%s)\n",
1014 tag, errno, strerror(errno));
1015 /* return 0 to continue boot regardless of error */
1018 fputs(pr->uuid, fp);
1023 fp = fopen(tag, "r");
1025 ULOG_ERR("extroot: failed to read UUID from %s: %d (%s)\n",
1026 tag, errno, strerror(errno));
1030 if (!fgets(uuid, sizeof(uuid), fp))
1031 ULOG_ERR("extroot: failed to read UUID from %s: %d (%s)\n",
1032 tag, errno, strerror(errno));
1035 if (*uuid || !strcasecmp(uuid, pr->uuid))
1038 ULOG_ERR("extroot: UUID mismatch (root: %s, %s: %s)\n",
1039 pr->uuid, basename(path), uuid);
1044 ULOG_ERR("extroot: unable to lookup root device %s\n", devpath);
1049 * Read info about extroot from UCI (using prefix) and mount it.
1051 static int mount_extroot(char *cfg)
1053 char overlay[] = "/tmp/extroot/overlay";
1054 char mnt[] = "/tmp/extroot/mnt";
1056 struct blkid_struct_probe *pr;
1060 /* Load @cfg/etc/config/fstab */
1061 if (config_load(cfg))
1064 /* See if there is extroot-specific mount config */
1065 m = find_block(NULL, NULL, NULL, "/");
1067 m = find_block(NULL, NULL, NULL, "/overlay");
1069 if (!m || !m->extroot)
1071 ULOG_INFO("extroot: not configured\n");
1075 /* Find block device pointed by the mount config */
1076 pr = find_block_info(m->uuid, m->label, m->device);
1078 if (!pr && delay_root){
1079 ULOG_INFO("extroot: device not present, retrying in %u seconds\n", delay_root);
1083 pr = find_block_info(m->uuid, m->label, m->device);
1086 if (strncmp(pr->id->name, "ext", 3) &&
1087 strncmp(pr->id->name, "ubifs", 5)) {
1088 ULOG_ERR("extroot: unsupported filesystem %s, try ext4\n", pr->id->name);
1092 if (test_fs_support(pr->id->name)) {
1093 ULOG_ERR("extroot: filesystem %s not supported by kernel\n", pr->id->name);
1102 check_filesystem(pr);
1104 err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
1107 ULOG_ERR("extroot: mounting %s (%s) on %s failed: %d (%s)\n",
1108 pr->dev, pr->id->name, path, err, strerror(err));
1109 } else if (m->overlay) {
1110 err = check_extroot(path);
1115 ULOG_ERR("extroot: cannot find device %s%s\n",
1116 (m->uuid ? "with UUID " : (m->label ? "with label " : "")),
1117 (m->uuid ? m->uuid : (m->label ? m->label : m->device)));
1123 static int main_extroot(int argc, char **argv)
1125 struct blkid_struct_probe *pr;
1126 char blkdev_path[32] = { 0 };
1128 #ifdef UBIFS_EXTROOT
1132 if (!getenv("PREINIT"))
1136 ULOG_ERR("Usage: block extroot\n");
1143 /* enable LOG_INFO messages */
1144 ulog_threshold(LOG_INFO);
1147 * Look for "rootfs_data". We will want to mount it and check for
1148 * extroot configuration.
1151 /* Start with looking for MTD partition */
1152 find_block_mtd("\"rootfs_data\"", blkdev_path, sizeof(blkdev_path));
1153 if (blkdev_path[0]) {
1154 pr = find_block_info(NULL, NULL, blkdev_path);
1155 if (pr && !strcmp(pr->id->name, "jffs2")) {
1156 char cfg[] = "/tmp/jffs_cfg";
1159 * Mount MTD part and try extroot (using
1160 * /etc/config/fstab from that partition)
1163 if (!mount(blkdev_path, cfg, "jffs2", MS_NOATIME, NULL)) {
1164 err = mount_extroot(cfg);
1165 umount2(cfg, MNT_DETACH);
1168 rmdir("/tmp/overlay");
1174 #ifdef UBIFS_EXTROOT
1175 /* ... but it also could be an UBI volume */
1176 memset(blkdev_path, 0, sizeof(blkdev_path));
1177 libubi = libubi_open();
1178 find_block_ubi(libubi, "rootfs_data", blkdev_path, sizeof(blkdev_path));
1179 libubi_close(libubi);
1180 if (blkdev_path[0]) {
1181 char cfg[] = "/tmp/ubifs_cfg";
1183 /* Mount volume and try extroot (using fstab from that vol) */
1185 if (!mount(blkdev_path, cfg, "ubifs", MS_NOATIME, NULL)) {
1186 err = mount_extroot(cfg);
1187 umount2(cfg, MNT_DETACH);
1190 rmdir("/tmp/overlay");
1196 return mount_extroot(NULL);
1199 static int main_mount(int argc, char **argv)
1201 struct blkid_struct_probe *pr;
1203 if (config_load(NULL))
1207 list_for_each_entry(pr, &devices, list)
1208 mount_device(pr, 0);
1210 handle_swapfiles(true);
1215 static int main_umount(int argc, char **argv)
1217 struct blkid_struct_probe *pr;
1219 if (config_load(NULL))
1222 handle_swapfiles(false);
1225 list_for_each_entry(pr, &devices, list)
1231 static int main_detect(int argc, char **argv)
1233 struct blkid_struct_probe *pr;
1236 printf("config 'global'\n");
1237 printf("\toption\tanon_swap\t'0'\n");
1238 printf("\toption\tanon_mount\t'0'\n");
1239 printf("\toption\tauto_swap\t'1'\n");
1240 printf("\toption\tauto_mount\t'1'\n");
1241 printf("\toption\tdelay_root\t'5'\n");
1242 printf("\toption\tcheck_fs\t'0'\n\n");
1243 list_for_each_entry(pr, &devices, list)
1244 print_block_uci(pr);
1249 static int main_info(int argc, char **argv)
1252 struct blkid_struct_probe *pr;
1256 list_for_each_entry(pr, &devices, list)
1257 print_block_info(pr);
1262 for (i = 2; i < argc; i++) {
1265 if (stat(argv[i], &s)) {
1266 ULOG_ERR("failed to stat %s\n", argv[i]);
1269 if (!S_ISBLK(s.st_mode)) {
1270 ULOG_ERR("%s is not a block device\n", argv[i]);
1273 pr = find_block_info(NULL, NULL, argv[i]);
1275 print_block_info(pr);
1281 static int swapon_usage(void)
1283 fprintf(stderr, "Usage: swapon [-s] [-a] [[-p pri] DEVICE]\n\n"
1284 "\tStart swapping on [DEVICE]\n"
1285 " -a\tStart swapping on all swap devices\n"
1286 " -p pri\tSet priority of swap device\n"
1287 " -s\tShow summary\n");
1291 static int main_swapon(int argc, char **argv)
1297 struct blkid_struct_probe *pr;
1303 while ((ch = getopt(argc, argv, "ap:s")) != -1) {
1306 fp = fopen("/proc/swaps", "r");
1310 ULOG_ERR("failed to open /proc/swaps\n");
1313 while (getline(&lineptr, &s, fp) > 0)
1314 printf("%s", lineptr);
1321 list_for_each_entry(pr, &devices, list) {
1322 if (strcmp(pr->id->name, "swap"))
1324 if (swapon(pr->dev, 0))
1325 ULOG_ERR("failed to swapon %s\n", pr->dev);
1331 flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
1334 return swapon_usage();
1339 if (optind != (argc - 1))
1340 return swapon_usage();
1342 if (stat(argv[optind], &st) || (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode))) {
1343 ULOG_ERR("%s is not a block device or file\n", argv[optind]);
1346 err = swapon(argv[optind], flags);
1348 ULOG_ERR("failed to swapon %s (%d)\n", argv[optind], err);
1355 static int main_swapoff(int argc, char **argv)
1358 ULOG_ERR("Usage: swapoff [-a] [DEVICE]\n\n"
1359 "\tStop swapping on DEVICE\n"
1360 " -a\tStop swapping on all swap devices\n");
1364 if (!strcmp(argv[1], "-a")) {
1365 FILE *fp = fopen("/proc/swaps", "r");
1369 ULOG_ERR("failed to open /proc/swaps\n");
1372 if (fgets(line, sizeof(line), fp))
1373 while (fgets(line, sizeof(line), fp)) {
1374 char *end = strchr(line, ' ');
1380 err = swapoff(line);
1382 ULOG_ERR("failed to swapoff %s (%d)\n", line, err);
1389 if (stat(argv[1], &s) || (!S_ISBLK(s.st_mode) && !S_ISREG(s.st_mode))) {
1390 ULOG_ERR("%s is not a block device or file\n", argv[1]);
1393 err = swapoff(argv[1]);
1395 ULOG_ERR("failed to swapoff %s (%d)\n", argv[1], err);
1403 int main(int argc, char **argv)
1405 char *base = basename(*argv);
1409 ulog_open(-1, -1, "block");
1410 ulog_threshold(LOG_NOTICE);
1412 if (!strcmp(base, "swapon"))
1413 return main_swapon(argc, argv);
1415 if (!strcmp(base, "swapoff"))
1416 return main_swapoff(argc, argv);
1418 if ((argc > 1) && !strcmp(base, "block")) {
1419 if (!strcmp(argv[1], "info"))
1420 return main_info(argc, argv);
1422 if (!strcmp(argv[1], "detect"))
1423 return main_detect(argc, argv);
1425 if (!strcmp(argv[1], "hotplug"))
1426 return main_hotplug(argc, argv);
1428 if (!strcmp(argv[1], "extroot"))
1429 return main_extroot(argc, argv);
1431 if (!strcmp(argv[1], "mount"))
1432 return main_mount(argc, argv);
1434 if (!strcmp(argv[1], "umount"))
1435 return main_umount(argc, argv);
1438 ULOG_ERR("Usage: block <info|mount|umount|detect>\n");