1 files changed, 110 insertions, 0 deletions
diff --git a/src/rc/swclock.c b/src/rc/swclock.c
new file mode 100644
index 00000000..39d65631
--- /dev/null
+++ b/src/rc/swclock.c
@@ -0,0 +1,110 @@
+/*
+  swclock.c
+  Sets the system time from the mtime of the given file.
+  This is useful for systems who do not have a working RTC and rely on ntp.
+  OpenRC relies on the correct system time for a lot of operations so this is needed
+  quite early.
+*/
+
+/*
+ * Copyright (c) 2009 Roy Marples <roy@marples.name>
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <utime.h>
+
+#include "builtins.h"
+#include "einfo.h"
+#include "rc-misc.h"
+
+#define RC_SHUTDOWNTIME    RC_SVCDIR "/shutdowntime"
+
+extern const char *applet;
+
+#include "_usage.h"
+#define extraopts "file"
+#define getoptstring "s" getoptstring_COMMON
+static const struct option longopts[] = {
+	{ "save", 0, NULL, 's' },
+	longopts_COMMON
+};
+static const char * const longopts_help[] = {
+	"saves the time",
+	longopts_help_COMMON
+};
+#include "_usage.c"
+
+int
+swclock(int argc, char **argv)
+{
+	int opt, sflag = 0;
+	const char *file = RC_SHUTDOWNTIME;
+	struct stat sb;
+	struct timeval tv;
+
+	while ((opt = getopt_long(argc, argv, getoptstring,
+		    longopts, (int *) 0)) != -1)
+	{
+		switch (opt) {
+		case 's':
+			sflag = 1;
+			break;
+		case_RC_COMMON_GETOPT;
+		}
+	}
+
+	if (optind < argc)
+		file = argv[optind++];
+
+	if (sflag) {
+		if (stat(file, &sb) == -1) {
+			opt = open(file, O_WRONLY | O_CREAT, 0644);
+			if (opt == -1)
+				eerrorx("swclock: open: %s", strerror(errno));
+			close(opt);
+		} else
+			if (utime(file, NULL) == -1)
+				eerrorx("swclock: utime: %s", strerror(errno));
+		return 0;
+	}
+
+	if (stat(file, &sb) == -1)
+		eerrorx("swclock: `%s': %s", file, strerror(errno));
+
+	tv.tv_sec = sb.st_mtime;
+	tv.tv_usec = 0;
+
+	if (settimeofday(&tv, NULL) == -1)
+		eerrorx("swclock: settimeofday: %s", strerror(errno));
+
+	return 0;
+}