| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * $Id: jffs2-user.h,v 1.1 2004/05/05 11:57:54 dwmw2 Exp $ |
| 3 | * |
| 4 | * JFFS2 definitions for use in user space only |
| 5 | */ |
| 6 | |
| 7 | #ifndef __JFFS2_USER_H__ |
| 8 | #define __JFFS2_USER_H__ |
| 9 | |
| 10 | /* This file is blessed for inclusion by userspace */ |
| 11 | #include <linux/jffs2.h> |
| 12 | #include <endian.h> |
| 13 | #include <byteswap.h> |
| 14 | |
| 15 | #undef cpu_to_je16 |
| 16 | #undef cpu_to_je32 |
| 17 | #undef cpu_to_jemode |
| 18 | #undef je16_to_cpu |
| 19 | #undef je32_to_cpu |
| 20 | #undef jemode_to_cpu |
| 21 | |
| 22 | extern int target_endian; |
| 23 | |
| 24 | #define t16(x) ({ uint16_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_16(__b); }) |
| 25 | #define t32(x) ({ uint32_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_32(__b); }) |
| 26 | |
| 27 | #define cpu_to_je16(x) ((jint16_t){t16(x)}) |
| 28 | #define cpu_to_je32(x) ((jint32_t){t32(x)}) |
| 29 | #define cpu_to_jemode(x) ((jmode_t){t32(x)}) |
| 30 | |
| 31 | #define je16_to_cpu(x) (t16((x).v16)) |
| 32 | #define je32_to_cpu(x) (t32((x).v32)) |
| 33 | #define jemode_to_cpu(x) (t32((x).m)) |
| 34 | |
| 35 | #endif /* __JFFS2_USER_H__ */ |