diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2007-08-20 16:12:24 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2007-08-20 16:12:24 +0000 |
| commit | 0b5b6e1a3294c33807b6a43fa569738502590fab (patch) | |
| tree | 6f2b435d012cfd371cbc43d5ef159af3c5896bda /package/mtd/src/crc32.h | |
| parent | 9e9579ce575362e918bb7f8672184da0c7349e9d (diff) | |
| download | master-187ad058-0b5b6e1a3294c33807b6a43fa569738502590fab.tar.gz master-187ad058-0b5b6e1a3294c33807b6a43fa569738502590fab.tar.bz2 master-187ad058-0b5b6e1a3294c33807b6a43fa569738502590fab.zip | |
cleanup mtd, implement jffs2write - one step closer to config preserving system upgrades
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8444 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/mtd/src/crc32.h')
| -rw-r--r-- | package/mtd/src/crc32.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/package/mtd/src/crc32.h b/package/mtd/src/crc32.h new file mode 100644 index 0000000000..ee3145bc15 --- /dev/null +++ b/package/mtd/src/crc32.h @@ -0,0 +1,19 @@ +#ifndef CRC32_H +#define CRC32_H + +#include <stdint.h> + +extern const uint32_t crc32_table[256]; + +/* Return a 32-bit CRC of the contents of the buffer. */ + + static inline uint32_t +crc32(uint32_t val, const void *ss, int len) +{ + const unsigned char *s = ss; + while (--len >= 0) + val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); + return val; +} + +#endif |