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authorRoy Marples <roy@marples.name>2009-10-13 08:03:45 +0100
committerRoy Marples <roy@marples.name>2009-10-13 08:03:45 +0100
commita8f6a9b6540ca301af625b4767df53860511a6dc (patch)
treea1dd01c8796d117c986f96fd702c3f3c6f2cdba5 /src/rc
parentaaa0498bf86baa065656b6a5c37cff82c032eb6d (diff)
Add new utility and init script swclock that sets the system time based on
the mtime of a file. It saves the shutdown time to this file also. This is handy for systems without a working RTC chip. Based on an idea by Michael A. Smith <michael@smith-li.com>. Fixes Gentoo #272073.
Diffstat (limited to 'src/rc')
-rw-r--r--src/rc/.gitignore2
-rw-r--r--src/rc/Makefile4
-rw-r--r--src/rc/builtins.h1
-rw-r--r--src/rc/rc-applets.c2
-rw-r--r--src/rc/swclock.c110
5 files changed, 117 insertions, 2 deletions
diff --git a/src/rc/.gitignore b/src/rc/.gitignore
index d06e8579..e14788ff 100644
--- a/src/rc/.gitignore
+++ b/src/rc/.gitignore
@@ -38,6 +38,7 @@ service_crashed
checkpath
fstabinfo
mountinfo
+swclock
rc-depend
service_get_value
service_set_value
@@ -59,6 +60,7 @@ checkpath.o
fstabinfo.o
mountinfo.o
start-stop-daemon.o
+swclock.o
rc-applets.o
rc-depend.o
rc-logger.o
diff --git a/src/rc/Makefile b/src/rc/Makefile
index 78b862df..d9f8e11b 100644
--- a/src/rc/Makefile
+++ b/src/rc/Makefile
@@ -2,7 +2,7 @@ PROG= rc
SRCS= checkpath.c fstabinfo.c mountinfo.c start-stop-daemon.c \
rc-applets.c rc-depend.c rc-logger.c \
rc-misc.c rc-plugin.c rc-service.c rc-status.c rc-update.c \
- runscript.c rc.c
+ runscript.c rc.c swclock.c
CLEANFILES= version.h
@@ -26,7 +26,7 @@ RC_SBINLINKS= mark_service_starting mark_service_started \
mark_service_stopping mark_service_stopped \
mark_service_inactive mark_service_wasinactive \
mark_service_hotplugged mark_service_failed \
- rc-abort
+ rc-abort swclock
ALL_LINKS= ${BINLINKS} ${SBINLINKS} ${RC_BINLINKS} ${RC_SBINLINKS}
CLEANFILES+= ${ALL_LINKS}
diff --git a/src/rc/builtins.h b/src/rc/builtins.h
index 6ce2164d..1acaccbd 100644
--- a/src/rc/builtins.h
+++ b/src/rc/builtins.h
@@ -35,6 +35,7 @@ int rc_status(int, char **);
int rc_update(int, char **);
int runscript(int, char **);
int start_stop_daemon(int, char **);
+int swclock(int, char **);
void run_applets(int, char **);
diff --git a/src/rc/rc-applets.c b/src/rc/rc-applets.c
index 101097cf..04e88de9 100644
--- a/src/rc/rc-applets.c
+++ b/src/rc/rc-applets.c
@@ -449,6 +449,8 @@ run_applets(int argc, char **argv)
exit(start_stop_daemon(argc, argv));
else if (strcmp (applet, "checkpath") == 0)
exit(checkpath(argc, argv));
+ else if (strcmp(applet, "swclock") == 0)
+ exit(swclock(argc, argv));
/* These could also be applications in their own right */
if (strcmp(applet, "shell_var") == 0)
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;
+}