Fix build on systems that lack nanosecond supportdevel

1 files changed, 35 insertions, 15 deletions

diff --git a/kernel-time-state.c b/kernel-time-state.c
index 9fb4405..b2d6cda 100644
--- a/kernel-time-state.c
+++ b/kernel-time-state.c
@@ -91,6 +91,18 @@
 #endif  // !defined HAS_TIMEX_TICK_AND_TIME
 
 
+#if !defined( STA_NANO )
+  #define STA_NANO 0x2000
+  #define STA_NANO_LOCALLY
+#endif
+
+
+#if !defined( STA_MODE )
+  #define STA_MODE 0x4000
+  #define STA_MODE_LOCALLY
+#endif
+
+
 
 static const char program_name[] = "kernel-time-state";
 
@@ -222,7 +234,7 @@ const char *kernel_state_string( int rc )
     case TIME_DEL:    return "< 'delete leap second' warning";
     case TIME_OOP:    return "<< leap second in progress";
     case TIME_WAIT:   return "< leap second has occured";
-    case TIME_ERROR:  return "*** clock not synchronized";
+    case TIME_ERROR:  return "clock not synchronized";
 
   }  // switch
 
@@ -345,10 +357,10 @@ void show_kern_status( const struct timex *p, int rc, int verbose,
   else
     printf( " %s", str_undef );
 
-  printf( ", rc: %i", rc );
+  printf( ", rc %i", rc );
 
   if ( rc || verbose )
-    printf( " %s", kernel_state_string( rc ) );
+    printf( ": %s", kernel_state_string( rc ) );
 
   if ( verbose > 1 )
   {
@@ -446,21 +458,25 @@ int check_change_kern_status( void )
 
   if ( must_set_tai )
   {
-    memset( &ntv, 0, sizeof( ntv ) );
-    ntv.modes = MOD_TAI;
-    ntv.constant = new_tai_offs;
+    #if defined( MOD_TAI )
+      memset( &ntv, 0, sizeof( ntv ) );
+      ntv.modes = MOD_TAI;
+      ntv.constant = new_tai_offs;
 
-    rc = do_kern_api_fnc( &ntv, "set kernel TAI offset" );
+      rc = do_kern_api_fnc( &ntv, "set kernel TAI offset" );
 
-    if ( rc < 0 )  // error
-    {
-      // Not a fatal error. Continue and read the current status.
-      memset( &ntv, 0, sizeof( ntv ) );
-      rc = do_kern_api_fnc( &ntv, str_read_kernel_time_status );
-    }
+      if ( rc < 0 )  // error
+      {
+        // Not a fatal error. Continue and read the current status.
+        memset( &ntv, 0, sizeof( ntv ) );
+        rc = do_kern_api_fnc( &ntv, str_read_kernel_time_status );
+      }
 
-    show_kern_status( &ntv, rc, verbose, NULL );
-    printf( "\n" );
+      show_kern_status( &ntv, rc, verbose, NULL );
+      printf( "\n" );
+    #else
+      printf( "Unable to set TAI, MOD_TAI is not defined.\n" );
+    #endif
   }
 
 out:
@@ -715,6 +731,10 @@ int main( int argc, char *argv[] )
     rc = do_test();
 
 out:
+  #if defined( STA_NANO_LOCALLY )
+    printf( "*** Warning: STA_NANO is not defined, kernel seems to lack nanosecond support.\n\n" );
+  #endif
+
   (void) str_not_supp;  // Avoid error "defined but not used".
 
   return abs( rc );