allow people to adjtime location

2 files changed, 18 insertions, 2 deletions

diff --git a/util-linux/Config.in b/util-linux/Config.in
index 2cd578332..01da99c41 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -208,6 +208,18 @@ config CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
           are overly fond of its long options, such as --hctosys, --utc, etc)
           then enable this option.
 
+config CONFIG_FEATURE_HWCLOCK_ADJTIME_FHS
+        bool "  Use FHS /var/lib/hwclock/adjtime"
+        default y
+        depends on CONFIG_HWCLOCK
+        help
+          Starting with FHS 2.3, the adjtime state file is supposed to exist
+          at /var/lib/hwclock/adjtime instead of /etc/adjtime.  If you wish 
+          to use the FHS behavior, answer Y here, otherwise answer N for the
+          classic /etc/adjtime path.
+
+          http://www.pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
+
 config CONFIG_IPCRM
         bool "ipcrm"
         default n
diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index 11261f47d..45959e7a1 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -155,11 +155,15 @@ static int from_sys_clock(int utc)
         return 0;
 }
 
-
+#ifdef CONFIG_FEATURE_HWCLOCK_ADJTIME_FHS
+# define ADJTIME_PATH "/var/lib/hwclock/adjtime"
+#else
+# define ADJTIME_PATH "/etc/adjtime"
+#endif
 static int check_utc(void)
 {
         int utc = 0;
-        FILE *f = fopen ( "/var/lib/hwclock/adjtime", "r" );
+        FILE *f = fopen ( ADJTIME_PATH, "r" );
 
         if ( f ) {
                 char buffer [128];