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

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 000000000..ee3145bc1
--- /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