New module 'link-warning'.

[gnulib.git] / lib / utimecmp.c

diff --git a/lib/utimecmp.c b/lib/utimecmp.c
index de18944..e0bfcb6 100644 (file)
--- a/lib/utimecmp.c
+++ b/lib/utimecmp.c
@@ -1,6 +1,6 @@
 /* utimecmp.c -- compare file time stamps
 
-   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -18,45 +18,37 @@
 
 /* Written by Paul Eggert.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "utimecmp.h"
 
-#if HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-#if HAVE_STDINT_H
-# include <stdint.h>
-#endif
-
 #include <limits.h>
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include "hash.h"
 #include "intprops.h"
+#include "stat-time.h"
 #include "timespec.h"
 #include "utimens.h"
+#include "verify.h"
 #include "xalloc.h"
 
-/* Verify a requirement at compile-time (unlike assert, which is runtime).  */
-#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
-
 #ifndef MAX
 # define MAX(a, b) ((a) > (b) ? (a) : (b))
 #endif
 
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
 enum { BILLION = 1000 * 1000 * 1000 };
 
 /* Best possible resolution that utimens can set and stat can return,
    due to system-call limitations.  It must be a power of 10 that is
    no greater than 1 billion.  */
-#if HAVE_WORKING_UTIMES && defined ST_MTIM_NSEC
+#if (HAVE_WORKING_UTIMES                                       \
+     && (defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC              \
+        || defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC       \
+        || defined HAVE_STRUCT_STAT_ST_ATIMENSEC               \
+        || defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC    \
+        || defined HAVE_STRUCT_STAT_ST_SPARE1))
 enum { SYSCALL_RESOLUTION = 1000 };
 #else
 enum { SYSCALL_RESOLUTION = BILLION };
@@ -133,14 +125,14 @@ utimecmp (char const *dst_name,
 
      time_t might be unsigned.  */
 
-  verify (time_t_is_integer, TYPE_IS_INTEGER (time_t));
-  verify (twos_complement_arithmetic, TYPE_TWOS_COMPLEMENT (int));
+  verify (TYPE_IS_INTEGER (time_t));
+  verify (TYPE_TWOS_COMPLEMENT (int));
 
   /* Destination and source time stamps.  */
   time_t dst_s = dst_stat->st_mtime;
   time_t src_s = src_stat->st_mtime;
-  int dst_ns = TIMESPEC_NS (dst_stat->st_mtim);
-  int src_ns = TIMESPEC_NS (src_stat->st_mtim);
+  int dst_ns = get_stat_mtime_ns (dst_stat);
+  int src_ns = get_stat_mtime_ns (src_stat);
 
   if (options & UTIMECMP_TRUNCATE_SOURCE)
     {
@@ -186,8 +178,8 @@ utimecmp (char const *dst_name,
          time_t dst_a_s = dst_stat->st_atime;
          time_t dst_c_s = dst_stat->st_ctime;
          time_t dst_m_s = dst_s;
-         int dst_a_ns = TIMESPEC_NS (dst_stat->st_atim);
-         int dst_c_ns = TIMESPEC_NS (dst_stat->st_ctim);
+         int dst_a_ns = get_stat_atime_ns (dst_stat);
+         int dst_c_ns = get_stat_ctime_ns (dst_stat);
          int dst_m_ns = dst_ns;
 
          /* Set RES to an upper bound on the file system resolution
@@ -280,7 +272,7 @@ utimecmp (char const *dst_name,
 
                if (stat_result
                    | (dst_status.st_mtime ^ dst_m_s)
-                   | (TIMESPEC_NS (dst_status.st_mtim) ^ dst_m_ns))
+                   | (get_stat_mtime_ns (&dst_status) ^ dst_m_ns))
                  {
                    /* The modification time changed, or we can't tell whether
                       it changed.  Change it back as best we can.  */
@@ -298,7 +290,7 @@ utimecmp (char const *dst_name,
              {
                int old_res = res;
                int a = (BILLION * (dst_status.st_mtime & 1)
-                        + TIMESPEC_NS (dst_status.st_mtim));
+                        + get_stat_mtime_ns (&dst_status));
 
                res = SYSCALL_RESOLUTION;