xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Squashfs: extend decompressor framework to handle compression options

Browse Source 
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>
This commit is contained in:
Phillip Lougher
2011-02-28 01:45:42 +00:00
parent 100b33c8bd
commit b7fc0ff09d
8 changed files with 54 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/squashfs/squashfs_fs.h
View File

@@ -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