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-rw-r--r--modules/pam_filter/pam_filter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/pam_filter/pam_filter.c b/modules/pam_filter/pam_filter.c
index 2f0af4fb..6e6def37 100644
--- a/modules/pam_filter/pam_filter.c
+++ b/modules/pam_filter/pam_filter.c
@@ -354,7 +354,7 @@ set_filter (pam_handle_t *pamh, int flags UNUSED, int ctrl,
int t = open("/dev/tty", O_RDWR|O_NOCTTY);
#else
int t = open("/dev/tty",O_RDWR);
- if (t > 0) {
+ if (t >= 0) {
(void) ioctl(t, TIOCNOTTY, NULL);
close(t);
}