#include <sys/types.h>
#include <sys/swap.h>
#include <sys/mount.h>
+#include <sys/wait.h>
#include <uci.h>
#include <uci_blob.h>
char *options;
char *uuid;
char *label;
+ char *device;
+ int extroot;
+ int overlay;
int disabled_fsck;
unsigned int prio;
};
static struct vlist_tree mounts;
static struct blob_buf b;
static LIST_HEAD(devices);
+static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
+static unsigned int delay_root;
+
+enum {
+ CFG_ANON_MOUNT,
+ CFG_ANON_SWAP,
+ CFG_AUTO_MOUNT,
+ CFG_AUTO_SWAP,
+ CFG_DELAY_ROOT,
+ CFG_CHECK_FS,
+ __CFG_MAX
+};
+
+static const struct blobmsg_policy config_policy[__CFG_MAX] = {
+ [CFG_ANON_SWAP] = { .name = "anon_swap", .type = BLOBMSG_TYPE_INT32 },
+ [CFG_ANON_MOUNT] = { .name = "anon_mount", .type = BLOBMSG_TYPE_INT32 },
+ [CFG_AUTO_SWAP] = { .name = "auto_swap", .type = BLOBMSG_TYPE_INT32 },
+ [CFG_AUTO_MOUNT] = { .name = "auto_mount", .type = BLOBMSG_TYPE_INT32 },
+ [CFG_DELAY_ROOT] = { .name = "delay_root", .type = BLOBMSG_TYPE_INT32 },
+ [CFG_CHECK_FS] = { .name = "check_fs", .type = BLOBMSG_TYPE_INT32 },
+};
enum {
MOUNT_UUID,
MOUNT_LABEL,
MOUNT_ENABLE,
MOUNT_TARGET,
+ MOUNT_DEVICE,
MOUNT_OPTIONS,
__MOUNT_MAX
};
+static const struct uci_blob_param_list config_attr_list = {
+ .n_params = __CFG_MAX,
+ .params = config_policy,
+};
+
static const struct blobmsg_policy mount_policy[__MOUNT_MAX] = {
[MOUNT_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
[MOUNT_LABEL] = { .name = "label", .type = BLOBMSG_TYPE_STRING },
+ [MOUNT_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
[MOUNT_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
[MOUNT_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_STRING },
[MOUNT_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
enum {
SWAP_ENABLE,
SWAP_UUID,
+ SWAP_DEVICE,
SWAP_PRIO,
__SWAP_MAX
};
static const struct blobmsg_policy swap_policy[__SWAP_MAX] = {
[SWAP_ENABLE] = { .name = "enabled", .type = BLOBMSG_TYPE_INT32 },
[SWAP_UUID] = { .name = "uuid", .type = BLOBMSG_TYPE_STRING },
+ [SWAP_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
[SWAP_PRIO] = { .name = "priority", .type = BLOBMSG_TYPE_INT32 },
};
return strdup(blobmsg_get_string(attr));
}
+static char *blobmsg_get_basename(struct blob_attr *attr)
+{
+ if (!attr)
+ return NULL;
+
+ return strdup(basename(blobmsg_get_string(attr)));
+}
+
static int mount_add(struct uci_section *s)
{
struct blob_attr *tb[__MOUNT_MAX] = { 0 };
uci_to_blob(&b, s, &mount_attr_list);
blobmsg_parse(mount_policy, __MOUNT_MAX, tb, blob_data(b.head), blob_len(b.head));
- if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID])
+ if (!tb[MOUNT_LABEL] && !tb[MOUNT_UUID] && !tb[MOUNT_DEVICE])
return -1;
- if (!tb[MOUNT_TARGET])
+ if (tb[MOUNT_ENABLE] && !blobmsg_get_u32(tb[MOUNT_ENABLE]))
return -1;
m = malloc(sizeof(struct mount));
m->label = blobmsg_get_strdup(tb[MOUNT_LABEL]);
m->target = blobmsg_get_strdup(tb[MOUNT_TARGET]);
m->options = blobmsg_get_strdup(tb[MOUNT_OPTIONS]);
-
- if ((!tb[MOUNT_ENABLE]) || blobmsg_get_u32(tb[MOUNT_ENABLE]))
- vlist_add(&mounts, &m->node, m->target);
+ m->device = blobmsg_get_basename(tb[MOUNT_DEVICE]);
+ m->overlay = m->extroot = 0;
+ if (m->target && !strcmp(m->target, "/"))
+ m->extroot = 1;
+ if (m->target && !strcmp(m->target, "/overlay"))
+ m->extroot = m->overlay = 1;
+
+ if (m->uuid)
+ vlist_add(&mounts, &m->node, m->uuid);
+ else if (m->label)
+ vlist_add(&mounts, &m->node, m->label);
+ else if (m->device)
+ vlist_add(&mounts, &m->node, m->device);
return 0;
}
uci_to_blob(&b, s, &swap_attr_list);
blobmsg_parse(swap_policy, __SWAP_MAX, tb, blob_data(b.head), blob_len(b.head));
- if (!tb[SWAP_UUID])
+ if (!tb[SWAP_UUID] && !tb[SWAP_DEVICE])
return -1;
m = malloc(sizeof(struct mount));
memset(m, 0, sizeof(struct mount));
m->type = TYPE_SWAP;
m->uuid = blobmsg_get_strdup(tb[SWAP_UUID]);
+ m->device = blobmsg_get_basename(tb[SWAP_DEVICE]);
if (tb[SWAP_PRIO])
m->prio = blobmsg_get_u32(tb[SWAP_PRIO]);
if (m->prio)
m->prio = ((m->prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
if ((!tb[SWAP_ENABLE]) || blobmsg_get_u32(tb[SWAP_ENABLE]))
- vlist_add(&mounts, &m->node, m->uuid);
+ vlist_add(&mounts, &m->node, (m->uuid) ? (m->uuid) : (m->device));
return 0;
}
-static struct mount* find_swap(const char *uuid)
+static int global_add(struct uci_section *s)
{
- struct mount *m;
+ struct blob_attr *tb[__CFG_MAX] = { 0 };
- if (!uuid)
- return NULL;
+ blob_buf_init(&b, 0);
+ uci_to_blob(&b, s, &config_attr_list);
+ blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(b.head), blob_len(b.head));
+
+ if ((tb[CFG_ANON_MOUNT]) && blobmsg_get_u32(tb[CFG_ANON_MOUNT]))
+ anon_mount = 1;
+ if ((tb[CFG_ANON_SWAP]) && blobmsg_get_u32(tb[CFG_ANON_SWAP]))
+ anon_swap = 1;
+
+ if ((tb[CFG_AUTO_MOUNT]) && blobmsg_get_u32(tb[CFG_AUTO_MOUNT]))
+ auto_mount = 1;
+ if ((tb[CFG_AUTO_SWAP]) && blobmsg_get_u32(tb[CFG_AUTO_SWAP]))
+ auto_swap = 1;
+
+ if (tb[CFG_DELAY_ROOT])
+ delay_root = blobmsg_get_u32(tb[CFG_DELAY_ROOT]);
- vlist_for_each_element(&mounts, m, node)
- if ((m->type == TYPE_SWAP) && m->uuid && !strcmp(m->uuid, uuid))
+ if ((tb[CFG_CHECK_FS]) && blobmsg_get_u32(tb[CFG_CHECK_FS]))
+ check_fs = 1;
+
+ return 0;
+}
+
+static struct mount* find_swap(const char *uuid, const char *device)
+{
+ struct mount *m;
+
+ vlist_for_each_element(&mounts, m, node) {
+ if (m->type != TYPE_SWAP)
+ continue;
+ if (uuid && m->uuid && !strcmp(m->uuid, uuid))
return m;
+ if (device && m->device && !strcmp(m->device, device))
+ return m;
+ }
return NULL;
}
-static struct mount* find_block(const char *uuid, const char *label, const char *target)
+static struct mount* find_block(const char *uuid, const char *label, const char *device,
+ const char *target)
{
struct mount *m;
vlist_for_each_element(&mounts, m, node) {
- if ((m->type == TYPE_MOUNT) && m->uuid && uuid && !strcmp(m->uuid, uuid))
+ if (m->type != TYPE_MOUNT)
+ continue;
+ if (m->uuid && uuid && !strcmp(m->uuid, uuid))
+ return m;
+ if (m->label && label && !strcmp(m->label, label))
return m;
- if ((m->type == TYPE_MOUNT) && m->label && label && !strcmp(m->label, label))
+ if (m->target && target && !strcmp(m->target, target))
return m;
- if ((m->type == TYPE_MOUNT) && target && !strcmp(m->target, target))
+ if (m->device && device && !strcmp(m->device, device))
return m;
}
mount_add(s);
if (!strcmp(s->type, "swap"))
swap_add(s);
+ if (!strcmp(s->type, "global"))
+ global_add(s);
}
vlist_flush(&mounts);
struct blkid_struct_probe *pr = malloc(sizeof(struct blkid_struct_probe));
memset(pr, 0, sizeof(struct blkid_struct_probe));
probe_block(gl.gl_pathv[j], pr);
- if (pr->err)
+ if (pr->err || !pr->id)
free(pr);
else
list_add_tail(&pr->list, &devices);
{
if (mtd)
_cache_load("/dev/mtdblock*");
+ _cache_load("/dev/mmcblk*");
_cache_load("/dev/sd*");
+ _cache_load("/dev/sdc*");
+ _cache_load("/dev/hd*");
+ _cache_load("/dev/md*");
+ _cache_load("/dev/mapper/*");
}
static int print_block_info(struct blkid_struct_probe *pr)
static int print_block_uci(struct blkid_struct_probe *pr)
{
- if (!pr->uuid[0])
- return 0;
-
if (!strcmp(pr->id->name, "swap")) {
printf("config 'swap'\n");
} else {
printf("config 'mount'\n");
printf("\toption\ttarget\t'/mnt/%s'\n", basename(pr->dev));
}
- printf("\toption\tuuid\t'%s'\n", pr->uuid);
+ if (pr->uuid[0])
+ printf("\toption\tuuid\t'%s'\n", pr->uuid);
+ else
+ printf("\toption\tdevice\t'%s'\n", pr->dev);
printf("\toption\tenabled\t'0'\n\n");
return 0;
}
}
-static int main_hotplug(int argc, char **argv)
+static void check_filesystem(struct blkid_struct_probe *pr)
+{
+ pid_t pid;
+ struct stat statbuf;
+ char *e2fsck = "/usr/sbin/e2fsck";
+
+ if (strncmp(pr->id->name, "ext", 3)) {
+ fprintf(stderr, "check_filesystem: %s is not supported\n", pr->id->name);
+ return;
+ }
+
+ if (stat(e2fsck, &statbuf) < 0) {
+ fprintf(stderr, "check_filesystem: %s not found\n", e2fsck);
+ return;
+ }
+
+ pid = fork();
+ if (!pid) {
+ execl(e2fsck, e2fsck, "-p", pr->dev, NULL);
+ exit(-1);
+ } else if (pid > 0) {
+ int status;
+
+ waitpid(pid, &status, 0);
+ if (WEXITSTATUS(status))
+ fprintf(stderr, "check_filesystem: %s returned %d\n", e2fsck, WEXITSTATUS(status));
+ }
+}
+
+static int mount_device(struct blkid_struct_probe *pr, int hotplug)
{
struct mount *m;
- char path[256];
+ char *device;
+
+ if (!pr)
+ return -1;
+
+ device = basename(pr->dev);
+
+ if (!strcmp(pr->id->name, "swap")) {
+ if (hotplug && !auto_swap)
+ return -1;
+ m = find_swap(pr->uuid, device);
+ if (m || anon_swap)
+ swapon(pr->dev, (m) ? (m->prio) : (0));
+
+ return 0;
+ }
+
+ if (hotplug && !auto_mount)
+ return -1;
+
+ if (find_mount_point(pr->dev)) {
+ fprintf(stderr, "%s is already mounted\n", pr->dev);
+ return -1;
+ }
+
+ m = find_block(pr->uuid, pr->label, device, NULL);
+ if (m && m->extroot)
+ return -1;
+
+ if (m) {
+ char *target = m->target;
+ char _target[] = "/mnt/mmcblk123";
+ int err = 0;
+
+ if (!target) {
+ snprintf(_target, sizeof(_target), "/mnt/%s", device);
+ target = _target;
+ }
+ mkdir_p(target);
+
+ if (check_fs)
+ check_filesystem(pr);
+
+ err = mount(pr->dev, target, pr->id->name, 0, (m->options) ? (m->options) : (""));
+ if (err)
+ fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
+ pr->dev, pr->id->name, target, err, strerror(err));
+ return err;
+ }
+
+ if (anon_mount) {
+ char target[] = "/mnt/mmcblk123";
+ int err = 0;
+
+ snprintf(target, sizeof(target), "/mnt/%s", device);
+ mkdir_p(target);
+
+ if (check_fs)
+ check_filesystem(pr);
+
+ err = mount(pr->dev, target, pr->id->name, 0, "");
+ if (err)
+ fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
+ pr->dev, pr->id->name, target, err, strerror(err));
+ return err;
+ }
+
+ return 0;
+}
+
+static int umount_device(struct blkid_struct_probe *pr)
+{
+ struct mount *m;
+ char *device = basename(pr->dev);
+ char *mp;
+ int err;
+
+ if (!pr)
+ return -1;
+
+ if (!strcmp(pr->id->name, "swap"))
+ return -1;
+
+ mp = find_mount_point(pr->dev);
+ if (!mp)
+ return -1;
+
+ m = find_block(pr->uuid, pr->label, device, NULL);
+ if (m && m->extroot)
+ return -1;
+
+ err = umount2(mp, MNT_DETACH);
+ if (err)
+ fprintf(stderr, "unmounting %s (%s) failed (%d) - %s\n",
+ pr->dev, mp, err, strerror(err));
+ else
+ fprintf(stderr, "unmounted %s (%s)\n",
+ pr->dev, mp);
+
+ return err;
+}
+
+static int main_hotplug(int argc, char **argv)
+{
+ char path[32];
char *action, *device, *mount_point;
- struct blkid_struct_probe *pr;
action = getenv("ACTION");
device = getenv("DEVNAME");
err = umount2(mount_point, MNT_DETACH);
if (err)
- fprintf(stderr, "unmount of %s failed (%d) - %s\n",
+ fprintf(stderr, "umount of %s failed (%d) - %s\n",
mount_point, err, strerror(err));
return 0;
return -1;
cache_load(0);
- pr = find_block_info(NULL, NULL, path);
- if (!pr && pr->uuid) {
- fprintf(stderr, "failed to read blockinfo for %s\n", path);
- return -1;
- }
-
- m = find_swap(pr->uuid);
- if (m) {
- if (!strcmp(action, "add"))
- swapon(path, m->prio);
- else
- swapoff(path);
- } else {
- m = find_block(pr->uuid, pr->label, NULL);
- if (m && strcmp(m->target, "/")) {
- int err = 0;
-
- mkdir_p(m->target);
- err = mount(path, m->target, pr->id->name, 0, (m->options) ? (m->options) : (""));
- if (err)
- fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
- path, pr->id->name, m->target, err, strerror(err));
- }
- }
-
- return 0;
+ return mount_device(find_block_info(NULL, NULL, path), 1);
}
static int find_block_mtd(char *name, char *part, int plen)
return 0;
}
-static int mount_extroot(char *path, char *cfg)
+static int check_extroot(char *path)
+{
+ struct blkid_struct_probe *pr = NULL;
+ char fs[32];
+
+ if (find_block_mtd("rootfs", fs, sizeof(fs)))
+ return -1;
+
+ list_for_each_entry(pr, &devices, list) {
+ if (!strcmp(pr->dev, fs)) {
+ struct stat s;
+ FILE *fp = NULL;
+ char tag[32];
+ char uuid[32] = { 0 };
+
+ snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
+ if (stat(tag, &s)) {
+ fp = fopen(tag, "w+");
+ if (!fp) {
+ fprintf(stderr, "extroot: failed to write uuid tag file\n");
+ /* return 0 to continue boot regardless of error */
+ return 0;
+ }
+ fputs(pr->uuid, fp);
+ fclose(fp);
+ return 0;
+ }
+
+ fp = fopen(tag, "r");
+ if (!fp) {
+ fprintf(stderr, "extroot: failed to open uuid tag file\n");
+ return -1;
+ }
+
+ fgets(uuid, sizeof(uuid), fp);
+ fclose(fp);
+ if (!strcmp(uuid, pr->uuid))
+ return 0;
+ fprintf(stderr, "extroot: uuid tag does not match rom uuid\n");
+ }
+ }
+ return -1;
+}
+
+static int mount_extroot(char *cfg)
{
- struct blkid_struct_probe *pr;
+ char overlay[] = "/tmp/overlay";
+ char mnt[] = "/tmp/mnt";
+ char *path = mnt;
+ struct blkid_struct_probe *pr;
struct mount *m;
int err = -1;
if (config_load(cfg))
- return 2;
+ return -2;
- m = find_block(NULL, NULL, "/");
+ m = find_block(NULL, NULL, NULL, "/");
if (!m)
- return 1;
+ m = find_block(NULL, NULL, NULL, "/overlay");
+
+ if (!m || !m->extroot)
+ return -1;
pr = find_block_info(m->uuid, m->label, NULL);
+
+ if (!pr && delay_root){
+ fprintf(stderr, "extroot: is not ready yet, retrying in %ui seconds\n", delay_root);
+ sleep(delay_root);
+ mkblkdev();
+ cache_load(0);
+ pr = find_block_info(m->uuid, m->label, NULL);
+ }
if (pr) {
+ if (strncmp(pr->id->name, "ext", 3)) {
+ fprintf(stderr, "extroot: %s is not supported, try ext4\n", pr->id->name);
+ return -1;
+ }
+ if (m->overlay)
+ path = overlay;
mkdir_p(path);
+
+ if (check_fs)
+ check_filesystem(pr);
+
err = mount(pr->dev, path, pr->id->name, 0, (m->options) ? (m->options) : (""));
- if (err)
+ if (err) {
fprintf(stderr, "mounting %s (%s) as %s failed (%d) - %s\n",
pr->dev, pr->id->name, path, err, strerror(err));
+ } else if (m->overlay) {
+ err = check_extroot(path);
+ if (err)
+ umount(path);
+ }
}
return err;
struct blkid_struct_probe *pr;
char fs[32] = { 0 };
char fs_data[32] = { 0 };
- int err = 1;
- char extroot[] = "/tmp/overlay";
+ int err = -1;
if (!getenv("PREINIT"))
return -1;
if (argc != 2) {
fprintf(stderr, "Usage: block extroot mountpoint\n");
- return 1;
+ return -1;
}
mkblkdev();
find_block_mtd("rootfs", fs, sizeof(fs));
if (!fs[0])
- return 2;
+ return -2;
pr = find_block_info(NULL, NULL, fs);
- if (!pr || strcmp(pr->id->name, "squashfs"))
- return 3;
+ if (!pr)
+ return -3;
find_block_mtd("rootfs_data", fs_data, sizeof(fs_data));
if (fs_data[0]) {
mkdir_p(cfg);
if (!mount(fs_data, cfg, "jffs2", MS_NOATIME, NULL)) {
- err = mount_extroot(extroot, cfg);
+ err = mount_extroot(cfg);
umount2(cfg, MNT_DETACH);
}
- if (err)
- rmdir(extroot);
+ if (err < 0)
+ rmdir("/tmp/overlay");
rmdir(cfg);
return err;
}
}
- err = mount_extroot(extroot, NULL);
+ return mount_extroot(NULL);
+}
- return err;
+static int main_mount(int argc, char **argv)
+{
+ struct blkid_struct_probe *pr;
+
+ if (config_load(NULL))
+ return -1;
+
+ cache_load(0);
+ list_for_each_entry(pr, &devices, list)
+ mount_device(pr, 0);
+
+ return 0;
+}
+
+static int main_umount(int argc, char **argv)
+{
+ struct blkid_struct_probe *pr;
+
+ if (config_load(NULL))
+ return -1;
+
+ cache_load(0);
+ list_for_each_entry(pr, &devices, list)
+ umount_device(pr);
+
+ return 0;
}
static int main_detect(int argc, char **argv)
struct blkid_struct_probe *pr;
cache_load(0);
+ printf("config 'global'\n");
+ printf("\toption\tanon_swap\t'0'\n");
+ printf("\toption\tanon_mount\t'0'\n");
+ printf("\toption\tauto_swap\t'1'\n");
+ printf("\toption\tauto_mount\t'1'\n");
+ printf("\toption\tdelay_root\t'0'\n");
+ printf("\toption\tcheck_fs\t'0'\n\n");
list_for_each_entry(pr, &devices, list)
print_block_uci(pr);
{
char *base = basename(*argv);
+ umask(0);
+
if (!strcmp(base, "swapon"))
return main_swapon(argc, argv);
if (!strcmp(argv[1], "extroot"))
return main_extroot(argc, argv);
+
+ if (!strcmp(argv[1], "mount"))
+ return main_mount(argc, argv);
+
+ if (!strcmp(argv[1], "umount"))
+ return main_umount(argc, argv);
}
- fprintf(stderr, "Usage: block <info|detect>\n");
+ fprintf(stderr, "Usage: block <info|mount|umount|detect>\n");
return -1;
}
projects / project / ubox.git / blobdiff