include/mtd/jffs2-user.h

   1 /*
   2  * JFFS2 definitions for use in user space only
   3  */
   4
   5 #ifndef __JFFS2_USER_H__
   6 #define __JFFS2_USER_H__
   7
   8 /* This file is blessed for inclusion by userspace */
   9 #include <linux/jffs2.h>
  10 #include <linux/types.h>
  11 #include <endian.h>
  12 #include <byteswap.h>
  13
  14 #undef cpu_to_je16
  15 #undef cpu_to_je32
  16 #undef cpu_to_jemode
  17 #undef je16_to_cpu
  18 #undef je32_to_cpu
  19 #undef jemode_to_cpu
  20
  21 extern int target_endian;
  22
  23 #define t16(x) ({ __u16 __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_16(__b); })
  24 #define t32(x) ({ __u32 __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_32(__b); })
  25
  26 #define cpu_to_je16(x) ((jint16_t){t16(x)})
  27 #define cpu_to_je32(x) ((jint32_t){t32(x)})
  28 #define cpu_to_jemode(x) ((jmode_t){t32(x)})
  29
  30 #define je16_to_cpu(x) (t16((x).v16))
  31 #define je32_to_cpu(x) (t32((x).v32))
  32 #define jemode_to_cpu(x) (t32((x).m))
  33
  34 #endif /* __JFFS2_USER_H__ */