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| author | Denys Vlasenko | 2012-05-18 02:51:27 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2012-05-18 02:51:27 +0200 |
| commit | 01339217261e3ad6f0a60c90e42e6d52580141ab (patch) | |
| tree | cfe3658c8b2482f44db919556ff7c9dad63dfc34 /util-linux/volume_id | |
| parent | be1cfeea2eba1570548b3f881740ff1ecefca660 (diff) | |
| download | busybox-01339217261e3ad6f0a60c90e42e6d52580141ab.zip busybox-01339217261e3ad6f0a60c90e42e6d52580141ab.tar.gz | |
volume_id/ext: detect ext4 too
function old new delta
volume_id_probe_ext 108 132 +24
Signed-off-by: Dees Troy<dees_troy@teamw.in>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'util-linux/volume_id')
| -rw-r--r-- | util-linux/volume_id/ext.c | 52 |
1 files changed, 48 insertions, 4 deletions
diff --git a/util-linux/volume_id/ext.c b/util-linux/volume_id/ext.c index b5194a7..aa23d1e 100644 --- a/util-linux/volume_id/ext.c +++ b/util-linux/volume_id/ext.c @@ -39,10 +39,50 @@ struct ext2_super_block { uint8_t volume_name[16]; } PACKED; -#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004 -#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008 #define EXT_SUPERBLOCK_OFFSET 0x400 +/* for s_flags */ +#define EXT2_FLAGS_TEST_FILESYS 0x0004 + +/* for s_feature_compat */ +#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 + +/* for s_feature_ro_compat */ +#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 +#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 +#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 +#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 +#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 + +/* for s_feature_incompat */ +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 +#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 +#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 +#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 +#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */ +#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 +#define EXT4_FEATURE_INCOMPAT_MMP 0x0100 +#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 + +#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ + EXT2_FEATURE_INCOMPAT_META_BG) +#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP +#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP + +#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ + EXT3_FEATURE_INCOMPAT_RECOVER| \ + EXT2_FEATURE_INCOMPAT_META_BG) +#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP +#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP + int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/) { #define off ((uint64_t)0) @@ -66,11 +106,15 @@ int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/) dbg("ext: label '%s' uuid '%s'", id->label, id->uuid); #if ENABLE_FEATURE_BLKID_TYPE - if ((le32_to_cpu(es->feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0) + if ((es->feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_HUGE_FILE | EXT4_FEATURE_RO_COMPAT_DIR_NLINK)) + || (es->feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_64BIT)) + ) { + id->type = "ext4"; + } + else if (es->feature_compat & cpu_to_le32(EXT3_FEATURE_COMPAT_HAS_JOURNAL)) id->type = "ext3"; else id->type = "ext2"; #endif - return 0; } |