diff options
Diffstat (limited to 'source4/lib/tdb/common/open.c')
| -rw-r--r-- | source4/lib/tdb/common/open.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/source4/lib/tdb/common/open.c b/source4/lib/tdb/common/open.c index 0bd1c91a5e..b19e4cea29 100644 --- a/source4/lib/tdb/common/open.c +++ b/source4/lib/tdb/common/open.c @@ -35,7 +35,7 @@ static struct tdb_context *tdbs = NULL; static unsigned int default_tdb_hash(TDB_DATA *key) { uint32_t value; /* Used to compute the hash value. */ - uint32_t i; /* Used to cycle through random values. */ + uint32_t i; /* Used to cycle through random values. */ /* Set the initial value from the key size. */ for (value = 0x238F13AF * key->dsize, i=0; i < key->dsize; i++) @@ -90,7 +90,7 @@ static int tdb_new_database(struct tdb_context *tdb, int hash_size) size -= written; written = write(tdb->fd, newdb+written, size); if (written == size) { - ret = 0; + ret = 0; } else if (written >= 0) { /* a second incomplete write - we give up. * guessing the errno... */ @@ -152,6 +152,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, int rev = 0, locked = 0; unsigned char *vp; uint32_t vertest; + unsigned v; if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) { /* Can't log this */ @@ -178,9 +179,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, tdb->page_size = 0x2000; } - if (open_flags & TDB_VOLATILE) { - tdb->max_dead_records = 5; - } + tdb->max_dead_records = (tdb_flags & TDB_VOLATILE) ? 5 : 0; if ((open_flags & O_ACCMODE) == O_WRONLY) { TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: can't open tdb %s write-only\n", @@ -215,6 +214,10 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, goto fail; /* errno set by open(2) */ } + /* on exec, don't inherit the fd */ + v = fcntl(tdb->fd, F_GETFD, 0); + fcntl(tdb->fd, F_SETFD, v | FD_CLOEXEC); + /* ensure there is only one process initialising at once */ if (tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_WRLCK, F_SETLKW, 0, 1) == -1) { TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: failed to get global lock on %s: %s\n", @@ -224,6 +227,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, /* we need to zero database if we are the only one with it open */ if ((tdb_flags & TDB_CLEAR_IF_FIRST) && + (!tdb->read_only) && (locked = (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_WRLCK, F_SETLK, 0, 1) == 0))) { open_flags |= O_CREAT; if (ftruncate(tdb->fd, 0) == -1) { @@ -242,7 +246,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, /* its not a valid database - possibly initialise it */ if (!(open_flags & O_CREAT) || tdb_new_database(tdb, hash_size) == -1) { if (errno == 0) { - errno = EIO; /* ie bad format or something */ + errno = EIO; /* ie bad format or something */ } goto fail; } @@ -283,7 +287,6 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags, tdb->map_size = st.st_size; tdb->device = st.st_dev; tdb->inode = st.st_ino; - tdb->max_dead_records = 0; tdb_mmap(tdb); if (locked) { if (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_UNLCK, F_SETLK, 0, 1) == -1) { |