diff options
Diffstat (limited to 'target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c')
| -rw-r--r-- | target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c index 162739f472..4f6b46e28b 100644 --- a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c +++ b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit.c @@ -70,7 +70,8 @@ static ssize_t mtd_next_eb(struct mtd_info *mtd, size_t offset) return mtd_rounddown_to_eb(offset, mtd) + mtd->erasesize; } -int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset) +int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset, + enum mtdsplit_part_type *type) { u32 magic; size_t retlen; @@ -84,25 +85,32 @@ int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset) if (retlen != sizeof(magic)) return -EIO; - if (le32_to_cpu(magic) != SQUASHFS_MAGIC && - magic != 0x19852003) - return -EINVAL; + if (le32_to_cpu(magic) == SQUASHFS_MAGIC) { + if (type) + *type = MTDSPLIT_PART_TYPE_SQUASHFS; + return 0; + } else if (magic == 0x19852003) { + if (type) + *type = MTDSPLIT_PART_TYPE_JFFS2; + return 0; + } - return 0; + return -EINVAL; } EXPORT_SYMBOL_GPL(mtd_check_rootfs_magic); int mtd_find_rootfs_from(struct mtd_info *mtd, size_t from, size_t limit, - size_t *ret_offset) + size_t *ret_offset, + enum mtdsplit_part_type *type) { size_t offset; int err; for (offset = from; offset < limit; offset = mtd_next_eb(mtd, offset)) { - err = mtd_check_rootfs_magic(mtd, offset); + err = mtd_check_rootfs_magic(mtd, offset, type); if (err) continue; |