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| author | Ilya Yanok <yanok@emcraft.com> | 2008-11-13 19:49:35 +0300 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-12-09 23:39:59 +0100 |
| commit | 9b7076229ec6a958bd835ab70745f7676297ce82 (patch) | |
| tree | daf8d517fffc53bbc0614337183e85d0210d0f29 /include/jffs2/jffs2.h | |
| parent | 70741004dc28946cd82c7af6789c4ddb3fc94526 (diff) | |
| download | u-boot-imx-9b7076229ec6a958bd835ab70745f7676297ce82.zip u-boot-imx-9b7076229ec6a958bd835ab70745f7676297ce82.tar.gz u-boot-imx-9b7076229ec6a958bd835ab70745f7676297ce82.tar.bz2 | |
jffs2: summary support
This patch adds support for reading fs information from summary
node instead of scanning full eraseblock.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Diffstat (limited to 'include/jffs2/jffs2.h')
| -rw-r--r-- | include/jffs2/jffs2.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/jffs2/jffs2.h b/include/jffs2/jffs2.h index d142cd1..ed96bab 100644 --- a/include/jffs2/jffs2.h +++ b/include/jffs2/jffs2.h @@ -50,6 +50,9 @@ #define JFFS2_EMPTY_BITMASK 0xffff #define JFFS2_DIRTY_BITMASK 0x0000 +/* Summary node MAGIC marker */ +#define JFFS2_SUM_MAGIC 0x02851885 + /* We only allow a single char for length, and 0xFF is empty flash so we don't want it confused with a real length. Hence max 254. */ @@ -89,6 +92,7 @@ #define JFFS2_NODETYPE_INODE (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 2) #define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3) #define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4) +#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6) /* Maybe later... */ /*#define JFFS2_NODETYPE_CHECKPOINT (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3) */ @@ -166,9 +170,24 @@ struct jffs2_raw_inode /* __u8 data[dsize]; */ } __attribute__((packed)); +struct jffs2_raw_summary +{ + __u16 magic; + __u16 nodetype; /* = JFFS2_NODETYPE_SUMMARY */ + __u32 totlen; + __u32 hdr_crc; + __u32 sum_num; /* number of sum entries*/ + __u32 cln_mkr; /* clean marker size, 0 = no cleanmarker */ + __u32 padded; /* sum of the size of padding nodes */ + __u32 sum_crc; /* summary information crc */ + __u32 node_crc; /* node crc */ + __u32 sum[0]; /* inode summary info */ +}; + union jffs2_node_union { struct jffs2_raw_inode i; struct jffs2_raw_dirent d; + struct jffs2_raw_summary s; struct jffs2_unknown_node u; } __attribute__((packed)); |