Remove non-portable functions from config.def.h

[slstatus.git] / components / uptime.c

diff --git a/components/uptime.c b/components/uptime.c
index 8a04b92..a3082f2 100644 (file)
--- a/components/uptime.c
+++ b/components/uptime.c
@@ -1,5 +1,7 @@
 /* See LICENSE file for copyright and license details. */
+#include <errno.h>
 #include <stdio.h>
+#include <string.h>
 #if defined(__linux__)
 #include <sys/sysinfo.h>
 #elif defined(__OpenBSD__)
@@ -35,8 +37,10 @@ uptime(void)
 
        if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1)
                uptime = now - boottime.tv_sec;
-       else
+       else {
+               fprintf(stderr, "sysctl 'KERN_BOOTTIME': %s\n", strerror(errno));
                return NULL;
+       }
 #endif
        h = uptime / 3600;
        m = (uptime - h * 3600) / 60;