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| author | Zhihao Cheng <chengzhihao1@huawei.com> | 2024-11-11 16:36:32 +0800 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2024-11-11 10:32:45 +0100 |
| commit | e7e19cd9d8cc0f54ca463c4aebf7c4ef5e4f84f8 (patch) | |
| tree | 120b7a31d43d8bb995b3d1a1b007a8cf519e04b0 /ubifs-utils/common/crc16.h | |
| parent | cba2d7875328b05a4a76f619de0ce7050f2df971 (diff) | |
ubifs-utils: Split common source files from mkfs.ubifs
Split common source files into common dir from mkfs.ubifs, this is a
preparation for importing libubifs(from linux kernel) to replace
current UBIFS libs.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'ubifs-utils/common/crc16.h')
| -rw-r--r-- | ubifs-utils/common/crc16.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ubifs-utils/common/crc16.h b/ubifs-utils/common/crc16.h new file mode 100644 index 0000000..539d21a --- /dev/null +++ b/ubifs-utils/common/crc16.h @@ -0,0 +1,27 @@ +/* + * Implements the standard CRC-16: + * Width 16 + * Poly 0x8005 (x^16 + x^15 + x^2 + 1) + * Init 0 + * + * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com> + * + * This code was taken from the linux kernel. The license is GPL Version 2. + */ + +#ifndef __CRC16_H__ +#define __CRC16_H__ + +#include <stdlib.h> +#include <stdint.h> + +extern uint16_t const crc16_table[256]; + +extern uint16_t crc16(uint16_t crc, const uint8_t *buffer, size_t len); + +static inline uint16_t crc16_byte(uint16_t crc, const uint8_t data) +{ + return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff]; +} + +#endif /* __CRC16_H__ */ |