void watchdog_ping(void)
{
DEBUG(4, "Ping\n");
- if (write(wdt_fd, "X", 1) < 0)
+ if (wdt_fd >= 0 && write(wdt_fd, "X", 1) < 0)
ERROR("WDT failed to write: %s\n", strerror(errno));
}
}
-void watchdog_no_cloexec(void)
+void watchdog_set_cloexec(bool val)
{
if (wdt_fd < 0)
return;
- fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) & ~FD_CLOEXEC);
+ int flags = fcntl(wdt_fd, F_GETFD);
+ if (val)
+ flags |= FD_CLOEXEC;
+ else
+ flags &= ~FD_CLOEXEC;
+ fcntl(wdt_fd, F_SETFD, flags);
}