if (mtd) {
_cache_load("/dev/mtdblock*");
_cache_load("/dev/ubiblock*");
+ _cache_load("/dev/ubi?*_?*");
}
_cache_load("/dev/mmcblk*");
_cache_load("/dev/sd*");
struct stat statbuf;
char *e2fsck = "/usr/sbin/e2fsck";
+ /* UBIFS does not need stuff like fsck */
+ if (!strncmp(pr->id->name, "ubifs", 5))
+ return;
+
if (strncmp(pr->id->name, "ext", 3)) {
ERROR("check_filesystem: %s is not supported\n", pr->id->name);
return;
return -1;
}
+/*
+ * Read info about extroot from UCI (using prefix) and mount it.
+ */
static int mount_extroot(char *cfg)
{
char overlay[] = "/tmp/extroot/overlay";
struct mount *m;
int err = -1;
+ /* Load @cfg/etc/config/fstab */
if (config_load(cfg))
return -2;
+ /* See if there is extroot-specific mount config */
m = find_block(NULL, NULL, NULL, "/");
if (!m)
m = find_block(NULL, NULL, NULL, "/overlay");
return -1;
}
+ /* Find block device pointed by the mount config */
pr = find_block_info(m->uuid, m->label, m->device);
if (!pr && delay_root){
pr = find_block_info(m->uuid, m->label, m->device);
}
if (pr) {
- if (strncmp(pr->id->name, "ext", 3)) {
+ if (strncmp(pr->id->name, "ext", 3) &&
+ strncmp(pr->id->name, "ubifs", 5)) {
ERROR("extroot: %s is not supported, try ext4\n", pr->id->name);
return -1;
}
{
struct blkid_struct_probe *pr;
char fs[32] = { 0 };
- char fs_data[32] = { 0 };
+ char blkdev_path[32] = { 0 };
int err = -1;
#ifdef UBIFS_EXTROOT
libubi_t libubi;
mkblkdev();
cache_load(1);
+ /*
+ * Make sure there is "rootfs" MTD partition or UBI volume.
+ * TODO: What for?
+ */
find_block_mtd("rootfs", fs, sizeof(fs));
if (!fs[0]) {
#ifdef UBIFS_EXTROOT
return -3;
}
- find_block_mtd("rootfs_data", fs_data, sizeof(fs_data));
- if (fs_data[0]) {
- pr = find_block_info(NULL, NULL, fs_data);
+ /*
+ * Look for "rootfs_data". We will want to mount it and check for
+ * extroot configuration.
+ */
+
+ /* Start with looking for MTD partition */
+ find_block_mtd("rootfs_data", blkdev_path, sizeof(blkdev_path));
+ if (blkdev_path[0]) {
+ pr = find_block_info(NULL, NULL, blkdev_path);
if (pr && !strcmp(pr->id->name, "jffs2")) {
char cfg[] = "/tmp/jffs_cfg";
+ /*
+ * Mount MTD part and try extroot (using
+ * /etc/config/fstab from that partition)
+ */
mkdir_p(cfg);
- if (!mount(fs_data, cfg, "jffs2", MS_NOATIME, NULL)) {
+ if (!mount(blkdev_path, cfg, "jffs2", MS_NOATIME, NULL)) {
err = mount_extroot(cfg);
umount2(cfg, MNT_DETACH);
}
}
#ifdef UBIFS_EXTROOT
- memset(fs_data, 0, sizeof(fs_data));
+ /* ... but it also could be an UBI volume */
+ memset(blkdev_path, 0, sizeof(blkdev_path));
libubi = libubi_open();
- find_block_ubi(libubi, "rootfs_data", fs_data, sizeof(fs_data));
+ find_block_ubi(libubi, "rootfs_data", blkdev_path, sizeof(blkdev_path));
libubi_close(libubi);
- if (fs_data[0]) {
+ if (blkdev_path[0]) {
char cfg[] = "/tmp/ubifs_cfg";
+ /* Mount volume and try extroot (using fstab from that vol) */
mkdir_p(cfg);
- if (!mount(fs_data, cfg, "ubifs", MS_NOATIME, NULL)) {
+ if (!mount(blkdev_path, cfg, "ubifs", MS_NOATIME, NULL)) {
err = mount_extroot(cfg);
umount2(cfg, MNT_DETACH);
}