wdctl: check writing to a file descriptor was successful

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

diff --git a/sys-utils/wdctl.c b/sys-utils/wdctl.c
index 24ec770fb038b0e959310e2dd43d75976db95990..af9a3933871dba31ac0f5d5dc5a392145d9c78d6 100644 (file)
--- a/sys-utils/wdctl.c
+++ b/sys-utils/wdctl.c
@@ -330,7 +330,8 @@ static int set_watchdog(struct wdinfo *wd, int timeout)
                warn(_("cannot set timeout for %s"), wd->device);
        }
 
-       close(fd);
+       if (close_fd(fd))
+               warn(_("write failed"));
        sigprocmask(SIG_SETMASK, &oldsigs, NULL);
        printf("Set timeout to %d seconds\n", timeout);
 
@@ -393,7 +394,8 @@ static int read_watchdog(struct wdinfo *wd)
                 * the machine might end up rebooting. */
        }
 
-       close(fd);
+       if (close_fd(fd))
+               warn(_("write failed"));
        sigprocmask(SIG_SETMASK, &oldsigs, NULL);
 
        return 0;