diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/tdb/common/lock.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/lib/tdb/common/lock.c b/lib/tdb/common/lock.c index 3013b06af6..920ba95fe0 100644 --- a/lib/tdb/common/lock.c +++ b/lib/tdb/common/lock.c @@ -224,12 +224,24 @@ static tdb_off_t lock_offset(int list) return FREELIST_TOP + 4*list; } +static struct tdb_lock_type *find_nestlock(struct tdb_context *tdb, + tdb_off_t offset) +{ + unsigned int i; + + for (i=0; i<tdb->num_lockrecs; i++) { + if (tdb->lockrecs[i].off == offset) { + return &tdb->lockrecs[i]; + } + } + return NULL; +} + /* lock an offset in the database. */ int tdb_nest_lock(struct tdb_context *tdb, uint32_t offset, int ltype, enum tdb_lock_flags flags) { struct tdb_lock_type *new_lck; - int i; if (offset >= lock_offset(tdb->header.hash_size)) { tdb->ecode = TDB_ERR_LOCK; @@ -240,24 +252,14 @@ int tdb_nest_lock(struct tdb_context *tdb, uint32_t offset, int ltype, if (tdb->flags & TDB_NOLOCK) return 0; - for (i=0; i<tdb->num_lockrecs; i++) { - if (tdb->lockrecs[i].off == offset) { - if (tdb->lockrecs[i].count == 0) { - /* - * Can't happen, see tdb_unlock(). It should - * be an assert. - */ - TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_lock: " - "lck->count == 0 for offset %u", - offset)); - } - /* - * Just increment the in-memory struct, posix locks - * don't stack. - */ - tdb->lockrecs[i].count++; - return 0; - } + new_lck = find_nestlock(tdb, offset); + if (new_lck) { + /* + * Just increment the in-memory struct, posix locks + * don't stack. + */ + new_lck->count++; + return 0; } new_lck = (struct tdb_lock_type *)realloc( @@ -332,8 +334,7 @@ int tdb_nest_unlock(struct tdb_context *tdb, uint32_t offset, int ltype, bool mark_lock) { int ret = -1; - int i; - struct tdb_lock_type *lck = NULL; + struct tdb_lock_type *lck; if (tdb->flags & TDB_NOLOCK) return 0; @@ -344,13 +345,7 @@ int tdb_nest_unlock(struct tdb_context *tdb, uint32_t offset, int ltype, return ret; } - for (i=0; i<tdb->num_lockrecs; i++) { - if (tdb->lockrecs[i].off == offset) { - lck = &tdb->lockrecs[i]; - break; - } - } - + lck = find_nestlock(tdb, offset); if ((lck == NULL) || (lck->count == 0)) { TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_unlock: count is 0\n")); return -1; |