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| author | Sage Weil <sage@newdream.net> | 2010-02-02 16:11:19 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-02-10 15:04:39 -0800 |
| commit | c7e337d6490d6f2f5e66ddf1b04d00b0dbd10108 (patch) | |
| tree | 3a2e12219e38e807c71d8b2c30b89e7efbe82bdd /fs/ceph/decode.h | |
| parent | 79788c698b290426320e60374ed1324e4b5c69eb (diff) | |
| download | kernel_samsung_smdk4412-c7e337d6490d6f2f5e66ddf1b04d00b0dbd10108.zip kernel_samsung_smdk4412-c7e337d6490d6f2f5e66ddf1b04d00b0dbd10108.tar.gz kernel_samsung_smdk4412-c7e337d6490d6f2f5e66ddf1b04d00b0dbd10108.tar.bz2 | |
ceph: buffer decoding helpers
Helper for decoding into a ceph_buffer, and other misc decoding helpers
we will need.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/decode.h')
| -rw-r--r-- | fs/ceph/decode.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/ceph/decode.h b/fs/ceph/decode.h index b90a33b..65b3e02 100644 --- a/fs/ceph/decode.h +++ b/fs/ceph/decode.h @@ -2,6 +2,7 @@ #define __CEPH_DECODE_H #include <asm/unaligned.h> +#include <linux/time.h> #include "types.h" @@ -65,6 +66,11 @@ static inline void ceph_decode_copy(void **p, void *pv, size_t n) ceph_decode_need(p, end, sizeof(u16), bad); \ v = ceph_decode_16(p); \ } while (0) +#define ceph_decode_8_safe(p, end, v, bad) \ + do { \ + ceph_decode_need(p, end, sizeof(u8), bad); \ + v = ceph_decode_8(p); \ + } while (0) #define ceph_decode_copy_safe(p, end, pv, n, bad) \ do { \ @@ -156,5 +162,33 @@ static inline void ceph_encode_string(void **p, void *end, *p += len; } +#define ceph_encode_need(p, end, n, bad) \ + do { \ + if (unlikely(*(p) + (n) > (end))) \ + goto bad; \ + } while (0) + +#define ceph_encode_64_safe(p, end, v, bad) \ + do { \ + ceph_encode_need(p, end, sizeof(u64), bad); \ + ceph_encode_64(p, v); \ + } while (0) +#define ceph_encode_32_safe(p, end, v, bad) \ + do { \ + ceph_encode_need(p, end, sizeof(u32), bad); \ + ceph_encode_32(p, v); \ + } while (0) +#define ceph_encode_16_safe(p, end, v, bad) \ + do { \ + ceph_encode_need(p, end, sizeof(u16), bad); \ + ceph_encode_16(p, v); \ + } while (0) + +#define ceph_encode_copy_safe(p, end, pv, n, bad) \ + do { \ + ceph_encode_need(p, end, n, bad); \ + ceph_encode_copy(p, pv, n); \ + } while (0) + #endif |