diff options
Diffstat (limited to 'src/util/mmap_cache.h')
| -rw-r--r-- | src/util/mmap_cache.h | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/src/util/mmap_cache.h b/src/util/mmap_cache.h index 7c6693ac..81269fe7 100644 --- a/src/util/mmap_cache.h +++ b/src/util/mmap_cache.h @@ -53,15 +53,15 @@ typedef uint32_t rel_ptr_t; #define MC_INVALID_VAL MC_INVALID_VAL32 /* - * 32 seem a good compromise for slot size + * 40 seem a good compromise for slot size * 4 blocks are enough for the average passwd entry of 42 bytes - * passwd records have 84 bytes of overhead, 128 - 82 = 46 bytes - * 3 blocks can contain a very minimal entry, 96 - 82 = 14 bytes + * passwd records have 84 bytes of overhead, 160 - 82 = 78 bytes + * 3 blocks can contain a very minimal entry, 120 - 82 = 38 bytes * * 3 blocks are enough for groups w/o users (private user groups) - * group records have 68 bytes of overhead, 96 - 66 = 30 bytes + * group records have 68 bytes of overhead, 120 - 66 = 54 bytes */ -#define MC_SLOT_SIZE 32 +#define MC_SLOT_SIZE 40 #define MC_SIZE_TO_SLOTS(len) (((len) + (MC_SLOT_SIZE - 1)) / MC_SLOT_SIZE) #define MC_PTR_TO_SLOT(base, ptr) (MC_PTR_DIFF(ptr, base) / MC_SLOT_SIZE) #define MC_SLOT_TO_PTR(base, slot, type) \ @@ -78,8 +78,8 @@ typedef uint32_t rel_ptr_t; - MC_PTR_DIFF(rec, (mc_ctx)->data_table)))) -#define SSS_MC_MAJOR_VNO 0 -#define SSS_MC_MINOR_VNO 4 +#define SSS_MC_MAJOR_VNO 1 +#define SSS_MC_MINOR_VNO 0 #define SSS_MC_HEADER_UNINIT 0 /* after ftruncate or before reset */ #define SSS_MC_HEADER_ALIVE 1 /* current and in use */ @@ -106,9 +106,13 @@ struct sss_mc_rec { uint32_t b1; /* barrier 1 */ uint32_t len; /* total record length including record data */ uint64_t expire; /* record expiration time (cast to time_t) */ - rel_ptr_t next; /* ptr of next record rel to data_table */ + rel_ptr_t next1; /* ptr of next record rel to data_table */ + /* next1 is related to hash1 */ + rel_ptr_t next2; /* ptr of next record rel to data_table */ + /* next2 is related to hash2 */ uint32_t hash1; /* val of first hash (usually name of record) */ uint32_t hash2; /* val of second hash (usually id of record) */ + uint32_t padding; /* padding & reserved for future changes */ uint32_t b2; /* barrier 2 - 32 bytes mark, fits a slot */ char data[0]; }; |