diff options
Diffstat (limited to 'lib/tdb2/tdb.c')
| -rw-r--r-- | lib/tdb2/tdb.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/tdb2/tdb.c b/lib/tdb2/tdb.c index 6f334a264b..25ce9b4662 100644 --- a/lib/tdb2/tdb.c +++ b/lib/tdb2/tdb.c @@ -326,6 +326,29 @@ unsigned int tdb_get_flags(struct tdb_context *tdb) return tdb->flags; } +static bool readonly_changable(struct tdb_context *tdb, const char *caller) +{ + if (tdb->transaction) { + tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, + TDB_LOG_USE_ERROR, + "%s: can't change" + " TDB_RDONLY inside transaction", + caller); + return false; + } + + if (tdb->file->allrecord_lock.count != 0 + || tdb->file->num_lockrecs != 0) { + tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, + TDB_LOG_USE_ERROR, + "%s: can't change" + " TDB_RDONLY holding locks", + caller); + return false; + } + return true; +} + void tdb_add_flag(struct tdb_context *tdb, unsigned flag) { if (tdb->flags & TDB_INTERNAL) { @@ -351,6 +374,10 @@ void tdb_add_flag(struct tdb_context *tdb, unsigned flag) case TDB_ALLOW_NESTING: tdb->flags |= TDB_ALLOW_NESTING; break; + case TDB_RDONLY: + if (readonly_changable(tdb, "tdb_add_flag")) + tdb->flags |= TDB_RDONLY; + break; default: tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, @@ -384,6 +411,18 @@ void tdb_remove_flag(struct tdb_context *tdb, unsigned flag) case TDB_ALLOW_NESTING: tdb->flags &= ~TDB_ALLOW_NESTING; break; + case TDB_RDONLY: + if ((tdb->open_flags & O_ACCMODE) == O_RDONLY) { + tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, + TDB_LOG_USE_ERROR, + "tdb_remove_flag: can't" + " remove TDB_RDONLY on tdb" + " opened with O_RDONLY"); + break; + } + if (readonly_changable(tdb, "tdb_remove_flag")) + tdb->flags &= ~TDB_RDONLY; + break; default: tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, |