X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Fmisc.c;h=78844ffcc8f6ed5adca60b9f6cd9fb9a8bab8c74;hb=aa976a517088ba75fa0168b47803b3988f89c9c3;hp=7322dd2a0f56c89cde3db3d24c14c51bb4ad1a4a;hpb=7b00db5675864768f56636b4c329635cf05123f1;p=chaz%2Ftar

diff --git a/src/misc.c b/src/misc.c
index 7322dd2..78844ff 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -23,6 +23,14 @@
 #include <quotearg.h>
 #include <save-cwd.h>
 #include <unlinkdir.h>
+#include <utimens.h>
+
+#if HAVE_STROPTS_H
+# include <stropts.h>
+#endif
+#if HAVE_SYS_FILIO_H
+# include <sys/filio.h>
+#endif
 
 
 /* Handling strings.  */
@@ -490,6 +498,26 @@ deref_stat (bool deref, char const *name, struct stat *buf)
   return deref ? stat (name, buf) : lstat (name, buf);
 }
 
+/* Set FD's (i.e., FILE's) access time to TIMESPEC[0].  If that's not
+   possible to do by itself, set its access and data modification
+   times to TIMESPEC[0] and TIMESPEC[1], respectively.  */
+int
+set_file_atime (int fd, char const *file, struct timespec const timespec[2])
+{
+#ifdef _FIOSATIME
+  if (0 <= fd)
+    {
+      struct timeval timeval;
+      timeval.tv_sec = timespec[0].tv_sec;
+      timeval.tv_usec = timespec[0].tv_nsec / 1000;
+      if (ioctl (fd, _FIOSATIME, &timeval) == 0)
+	return 0;
+    }
+#endif
+
+  return futimens (fd, file, timespec);
+}
+
 /* A description of a working directory.  */
 struct wd
 {