X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Fmisc.c;h=951449eb0c0b035246b02fc50f27d7a7c7e1a49f;hb=1428b7f1764ae29ca1e975a0762872569fccb8df;hp=7322dd2a0f56c89cde3db3d24c14c51bb4ad1a4a;hpb=3209329337c87a102fa12d7eb60a3df323ba56c1;p=chaz%2Ftar

diff --git a/src/misc.c b/src/misc.c
index 7322dd2..951449e 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -1,11 +1,11 @@
 /* Miscellaneous functions, not really specific to GNU tar.
 
    Copyright (C) 1988, 1992, 1994, 1995, 1996, 1997, 1999, 2000, 2001,
-   2003, 2004, 2005 Free Software Foundation, Inc.
+   2003, 2004, 2005, 2006, 2007 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 the
-   Free Software Foundation; either version 2, or (at your option) any later
+   Free Software Foundation; either version 3, or (at your option) any later
    version.
 
    This program is distributed in the hope that it will be useful, but
@@ -22,7 +22,16 @@
 #include "common.h"
 #include <quotearg.h>
 #include <save-cwd.h>
+#include <xgetcwd.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.  */
@@ -404,7 +413,7 @@ remove_any_file (const char *file_name, enum remove_option option)
    so, we do not have to backup block or character devices, nor remote
    entities.  */
 bool
-maybe_backup_file (const char *file_name, int this_is_the_archive)
+maybe_backup_file (const char *file_name, bool this_is_the_archive)
 {
   struct stat file_stat;
 
@@ -490,6 +499,26 @@ 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 gl_futimens (fd, file, timespec);
+}
+
 /* A description of a working directory.  */
 struct wd
 {
@@ -514,8 +543,14 @@ chdir_arg (char const *dir)
 {
   if (wds == wd_alloc)
     {
-      wd_alloc = 2 * (wd_alloc + 1);
-      wd = xrealloc (wd, sizeof *wd * wd_alloc);
+      if (wd_alloc == 0)
+	{
+	  wd_alloc = 2;
+	  wd = xmalloc (sizeof *wd * wd_alloc);
+	}
+      else
+	wd = x2nrealloc (wd, &wd_alloc, sizeof *wd);
+
       if (! wds)
 	{
 	  wd[wds].name = ".";
@@ -554,9 +589,30 @@ chdir_do (int i)
 
       if (! prev->saved)
 	{
+	  int err = 0;
 	  prev->saved = 1;
 	  if (save_cwd (&prev->saved_cwd) != 0)
-	    FATAL_ERROR ((0, 0, _("Cannot save working directory")));
+	    err = errno;
+	  else if (0 <= prev->saved_cwd.desc)
+	    {
+	      /* Make sure we still have at least one descriptor available.  */
+	      int fd1 = prev->saved_cwd.desc;
+	      int fd2 = dup (fd1);
+	      if (0 <= fd2)
+		close (fd2);
+	      else if (errno == EMFILE)
+		{
+		  /* Force restore_cwd to use chdir_long.  */
+		  close (fd1);
+		  prev->saved_cwd.desc = -1;
+		  prev->saved_cwd.name = xgetcwd ();
+		}
+	      else
+		err = errno;
+	    }
+
+	  if (err)
+	    FATAL_ERROR ((0, err, _("Cannot save working directory")));
 	}
 
       if (curr->saved)