libfdisk: reset context FD on error

When the query disk fails, reset cxt->dev_fd.

Addresses: https://github.com/karelzak/util-linux/pull/1137
Addresses: https://github.com/karelzak/util-linux/issues/1131
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/libfdisk/src/context.c b/libfdisk/src/context.c
index 327e03b42b214381e69e4a01bb5364030061fad5..206627849c32c6465ad6040d5e3cd6be77593160 100644 (file)
--- a/libfdisk/src/context.c
+++ b/libfdisk/src/context.c
@@ -636,6 +636,7 @@ static int fdisk_assign_fd(struct fdisk_context *cxt, int fd,
 fail:
        {
                int rc = -errno;
+               cxt->dev_fd = -1;
                DBG(CXT, ul_debugobj(cxt, "failed to assign device [rc=%d]", rc));
                return rc;
        }