diff options
Diffstat (limited to 'xlators/nfs/server/src/nfs-common.c')
| -rw-r--r-- | xlators/nfs/server/src/nfs-common.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/xlators/nfs/server/src/nfs-common.c b/xlators/nfs/server/src/nfs-common.c index 6628c297fcc..ef2d1d3fdf5 100644 --- a/xlators/nfs/server/src/nfs-common.c +++ b/xlators/nfs/server/src/nfs-common.c @@ -393,3 +393,35 @@ err: return ret; } + + +uint32_t +nfs_hash_gfid (uuid_t gfid) +{ + uint32_t hash = 0; + uint64_t msb64 = 0; + uint64_t lsb64 = 0; + uint32_t a1 = 0; + uint32_t a2 = 0; + uint32_t a3 = 0; + uint32_t a4 = 0; + uint32_t b1 = 0; + uint32_t b2 = 0; + + memcpy (&msb64, &gfid[8], 8); + memcpy (&lsb64, &gfid[0], 8); + + a1 = (msb64 << 32); + a2 = (msb64 >> 32); + a3 = (lsb64 << 32); + a4 = (lsb64 >> 32); + + b1 = a1 ^ a4; + b2 = a2 ^ a3; + + hash = b1 ^ b2; + + return hash; +} + + |