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tdb: don't alter tdb->flags in tdb_reopen_all()

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The flags are user-visible, via tdb_get_flags/add_flags/remove_flags.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This commit is contained in:
Rusty Russell 2009-07-30 11:52:39 +09:30 committed by Stefan Metzmacher
parent 3b2f074bda
commit a207cca1d3
1 changed files with 13 additions and 6 deletions
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19
lib/tdb/common/open.c
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@ -405,9 +405,7 @@ void *tdb_get_logging_private(struct tdb_context *tdb)
return tdb->log.log_private;
}
/* reopen a tdb - this can be used after a fork to ensure that we have an independent
seek pointer from our parent and to re-establish locks */
int tdb_reopen(struct tdb_context *tdb)
static int tdb_reopen_internal(struct tdb_context *tdb, bool active_lock)
{
struct stat st;
@ -450,7 +448,7 @@ int tdb_reopen(struct tdb_context *tdb)
tdb_mmap(tdb);
#endif /* fake pread or pwrite */
if ((tdb->flags & TDB_CLEAR_IF_FIRST) &&
if (active_lock &&
(tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_RDLCK, F_SETLKW, 0, 1) == -1)) {
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: failed to obtain active lock\n"));
goto fail;
@ -463,12 +461,21 @@ fail:
return -1;
}
/* reopen a tdb - this can be used after a fork to ensure that we have an independent
seek pointer from our parent and to re-establish locks */
int tdb_reopen(struct tdb_context *tdb)
{
return tdb_reopen_internal(tdb, tdb->flags & TDB_CLEAR_IF_FIRST);
}
/* reopen all tdb's */
int tdb_reopen_all(int parent_longlived)
{
struct tdb_context *tdb;
for (tdb=tdbs; tdb; tdb = tdb->next) {
bool active_lock = (tdb->flags & TDB_CLEAR_IF_FIRST);
/*
* If the parent is longlived (ie. a
* parent daemon architecture), we know
@ -482,10 +489,10 @@ int tdb_reopen_all(int parent_longlived)
*/
if (parent_longlived) {
/* Ensure no clear-if-first. */
tdb->flags &= ~TDB_CLEAR_IF_FIRST;
active_lock = false;
}
if (tdb_reopen(tdb) != 0)
if (tdb_reopen_internal(tdb, active_lock) != 0)
return -1;
}