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cramfs: error message about endianess

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The README file in the cramfs subdirectory says: "All data is currently in
host-endian format; neither mkcramfs nor the kernel ever do swabbing."

If somebody tries to mount a cramfs with the wrong endianess, cramfs only
complains about a wrong magic but doesn't inform the user that only the
endianess isn't right.

The following patch adds an error message to the cramfs sources.  If a user
tries to mount a cramfs with the wrong endianess using the patched sources,
cramfs will display the message "cramfs: wrong endianess".

Signed-off-by: Andi Drebes <lists-receive@programmierforen.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andi Drebes 2007-10-16 23:27:12 -07:00 • committed by Linus Torvalds
parent 7f44c3621a
commit ac8d35c565
2 changed files with 11 additions and 1 deletions
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1
include/linux/cramfs_fs.h
View file

@ -4,6 +4,7 @@
#include <linux/types.h>
#define CRAMFS_MAGIC 0x28cd3d45 /* some random number */
#define CRAMFS_MAGIC_WEND 0x453dcd28 /* magic number with the wrong endianess */
#define CRAMFS_SIGNATURE "Compressed ROMFS"
/*