Initial fork from https://git.suckless.org/slstatus

Changes to be committed:
    new file:   LICENSE
    new file:   Makefile
    new file:   README
    new file:   arg.h
    new file:   components/battery.c
    new file:   components/cat.c
    new file:   components/cpu.c
    new file:   components/datetime.c
    new file:   components/disk.c
    new file:   components/entropy.c
    new file:   components/hostname.c
    new file:   components/ip.c
    new file:   components/kernel_release.c
    new file:   components/keyboard_indicators.c
    new file:   components/keymap.c
    new file:   components/load_avg.c
    new file:   components/netspeeds.c
    new file:   components/num_files.c
    new file:   components/ram.c
    new file:   components/run_command.c
    new file:   components/swap.c
    new file:   components/temperature.c
    new file:   components/uptime.c
    new file:   components/user.c
    new file:   components/volume.c
    new file:   components/wifi.c
    new file:   config.def.h
    new file:   config.mk
    new file:   slstatus.1
    new file:   slstatus.c
    new file:   slstatus.h
    new file:   util.c
    new file:   util.h

1 files changed, 34 insertions, 0 deletions

diff --git a/components/uptime.c b/components/uptime.c
new file mode 100644
index 0000000..6227f73
--- /dev/null
+++ b/components/uptime.c
@@ -0,0 +1,34 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdint.h>
+#include <stdio.h>
+#include <time.h>
+
+#include "../slstatus.h"
+#include "../util.h"
+
+#if defined(CLOCK_BOOTTIME)
+	#define UPTIME_FLAG CLOCK_BOOTTIME
+#elif defined(CLOCK_UPTIME)
+	#define UPTIME_FLAG CLOCK_UPTIME
+#else
+	#define UPTIME_FLAG CLOCK_MONOTONIC
+#endif
+
+const char *
+uptime(const char *unused)
+{
+	char warn_buf[256];
+	uintmax_t h, m;
+	struct timespec uptime;
+
+	if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
+		snprintf(warn_buf, sizeof(warn_buf), "clock_gettime %d", UPTIME_FLAG);
+		warn(warn_buf);
+		return NULL;
+	}
+
+	h = uptime.tv_sec / 3600;
+	m = uptime.tv_sec % 3600 / 60;
+
+	return bprintf("%juh %jum", h, m);
+}