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| author | Phillip Lougher <phillip@lougher.demon.co.uk> | 2011-02-28 01:45:42 +0000 |
|---|---|---|
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | 2011-02-28 18:21:59 +0000 |
| commit | b7fc0ff09d24b372dc04b0c02b80659c0a66fdfe (patch) | |
| tree | 9cd9a94c3b07ef8064e1952a376d964776aa4571 /fs/squashfs/squashfs_fs.h | |
| parent | 100b33c8bd8a3235fd0b7948338d6cbb3db3c63d (diff) | |
| download | lwn-b7fc0ff09d24b372dc04b0c02b80659c0a66fdfe.tar.gz lwn-b7fc0ff09d24b372dc04b0c02b80659c0a66fdfe.zip | |
Squashfs: extend decompressor framework to handle compression options
Extend decompressor framework to handle compression options stored in
the filesystem. These options can be used by the relevant decompressor
at initialisation time to over-ride defaults.
The presence of compression options in the filesystem is indicated by
the COMP_OPT filesystem flag. If present the data is read from the
filesystem and passed to the decompressor init function. The decompressor
init function signature has been extended to take this data.
Also update the init function signature in the glib, lzo and xz
decompressor wrappers.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Diffstat (limited to 'fs/squashfs/squashfs_fs.h')
| -rw-r--r-- | fs/squashfs/squashfs_fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h index 39533feffd6d..4582c568ef4d 100644 --- a/fs/squashfs/squashfs_fs.h +++ b/fs/squashfs/squashfs_fs.h @@ -57,6 +57,7 @@ #define SQUASHFS_ALWAYS_FRAG 5 #define SQUASHFS_DUPLICATE 6 #define SQUASHFS_EXPORT 7 +#define SQUASHFS_COMP_OPT 10 #define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1) @@ -81,6 +82,9 @@ #define SQUASHFS_EXPORTABLE(flags) SQUASHFS_BIT(flags, \ SQUASHFS_EXPORT) +#define SQUASHFS_COMP_OPTS(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_COMP_OPT) + /* Max number of types and file types */ #define SQUASHFS_DIR_TYPE 1 #define SQUASHFS_REG_TYPE 2 |