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-rw-r--r--source3/lib/tdb/common/io.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/source3/lib/tdb/common/io.c b/source3/lib/tdb/common/io.c
index a24b5e24a2..df924a9dcd 100644
--- a/source3/lib/tdb/common/io.c
+++ b/source3/lib/tdb/common/io.c
@@ -220,7 +220,16 @@ static int tdb_expand_file(struct tdb_context *tdb, tdb_off_t size, tdb_off_t ad
if (ftruncate(tdb->fd, size+addition) == -1) {
char b = 0;
- if (pwrite(tdb->fd, &b, 1, (size+addition) - 1) != 1) {
+ ssize_t written = pwrite(tdb->fd, &b, 1, (size+addition) - 1);
+ if (written == 0) {
+ /* try once more, potentially revealing errno */
+ written = pwrite(tdb->fd, &b, 1, (size+addition) - 1);
+ }
+ if (written == 0) {
+ /* again - give up, guessing errno */
+ errno = ENOSPC;
+ }
+ if (written != 1) {
TDB_LOG((tdb, TDB_DEBUG_FATAL, "expand_file to %d failed (%s)\n",
size+addition, strerror(errno)));
return -1;