Add st_birthtime and friends for accurate create times on systems that support it...

[samba.git] / source / lib / time.c

diff --git a/source/lib/time.c b/source/lib/time.c
index 17990b926996798109a3a83f5927cd0fda17dced..8ab001ec9220e0eacf4b0fe8c37ab6382643a85c 100644 (file)
--- a/source/lib/time.c
+++ b/source/lib/time.c
@@ -826,14 +826,10 @@ void put_long_date(char *p, time_t t)
  structure.
 ****************************************************************************/
 
-time_t get_create_time(const SMB_STRUCT_STAT *st,bool fake_dirs)
+static time_t calc_create_time(const SMB_STRUCT_STAT *st)
 {
        time_t ret, ret1;
 
-       if(S_ISDIR(st->st_mode) && fake_dirs) {
-               return (time_t)315493200L;          /* 1/1/1980 */
-       }
-    
        ret = MIN(st->st_ctime, st->st_mtime);
        ret1 = MIN(ret, st->st_atime);
 
@@ -848,12 +844,36 @@ time_t get_create_time(const SMB_STRUCT_STAT *st,bool fake_dirs)
        return ret;
 }
 
-struct timespec get_create_timespec(const SMB_STRUCT_STAT *st,bool fake_dirs)
+/****************************************************************************
+ Return the 'create time' from a stat struct if it exists (birthtime) or else
+ use the best approximation.
+****************************************************************************/
+
+struct timespec get_create_timespec(const SMB_STRUCT_STAT *pst,bool fake_dirs)
 {
-       struct timespec ts;
-       ts.tv_sec = get_create_time(st, fake_dirs);
-       ts.tv_nsec = 0;
-       return ts;
+       struct timespec ret;
+
+       if(S_ISDIR(pst->st_mode) && fake_dirs) {
+               ret.tv_sec = 315493200L;          /* 1/1/1980 */
+               ret.tv_nsec = 0;
+               return ret;
+       }
+
+#if defined(HAVE_STAT_ST_BIRTHTIMESPEC)
+       return pst->st_birthtimespec;
+#elif defined(HAVE_STAT_ST_BIRTHTIMENSEC)
+       ret.tv_sec = pst->st_birthtime;
+       ret.tv_nsec = pst->st_birthtimenspec;
+       return ret;
+#elif defined(HAVE_STAT_ST_BIRTHTIME)
+       ret.tv_sec = pst->st_birthtime;
+       ret.tv_nsec = 0;
+       return ret;
+#else
+       ret.tv_sec = calc_create_time(pst);
+       ret.tv_nsec = 0;
+       return ret;
+#endif
 }
 
 /****************************************************************************