X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fopenat-priv.h;h=53016a14ecad0cdf287c88e2b8efc53d4c3f1760;hb=e8eecfd3f7d37692a7b87779b69d6fdc22d88d4d;hp=1f420c17546d972abd764054e0ba615fdd35f90a;hpb=8b3f78cdd40155b5864692b63b6a368c7dabd050;p=gnulib.git

diff --git a/lib/openat-priv.h b/lib/openat-priv.h
index 1f420c175..53016a14e 100644
--- a/lib/openat-priv.h
+++ b/lib/openat-priv.h
@@ -1,10 +1,11 @@
-/* macros used by openat-like functions
-   Copyright (C) 2005 Free Software Foundation, Inc.
+/* Internals for openat-like functions.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 2005, 2006, 2009 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 version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,45 +13,18 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* written by Jim Meyering */
 
-#include <stdio.h>
-#include <string.h>
+#ifndef _GL_HEADER_OPENAT_PRIV
+#define _GL_HEADER_OPENAT_PRIV
+
 #include <errno.h>
-#include "alloca.h"
-#include "intprops.h"
-
-/* Set PROC_FD_FILENAME to the expansion of "/proc/self/fd/%d/%s" in
-   alloca'd memory, using FD and FILE, respectively for %d and %s. */
-#define BUILD_PROC_NAME(Proc_fd_filename, Fd, File)			\
-  do									\
-    {									\
-      size_t filelen = strlen (File);					\
-      static const char procfd[] = "/proc/self/fd/%d/%s";		\
-      /* Buffer for the file name we are going to use.  It consists of	\
-	 - the string /proc/self/fd/					\
-	 - the file descriptor number					\
-	 - the file name provided.					\
-	 The final NUL is included in the sizeof.			\
-	 Subtract 4 to account for %d and %s.  */			\
-      size_t buflen = sizeof (procfd) - 4 + INT_STRLEN_BOUND (Fd) + filelen; \
-      (Proc_fd_filename) = alloca (buflen);				\
-      snprintf ((Proc_fd_filename), buflen, procfd, (Fd), (File));	\
-    }									\
-  while (0)
-
-/* Some systems don't have ENOSYS.  */
-#ifndef ENOSYS
-# ifdef ENOTSUP
-#  define ENOSYS ENOTSUP
-# else
-/* Some systems don't have ENOTSUP either.  */
-#  define ENOSYS EINVAL
-# endif
-#endif
+#include <stdlib.h>
+
+#define OPENAT_BUFFER_SIZE 512
+char *openat_proc_name (char buf[OPENAT_BUFFER_SIZE], int fd, char const *file);
 
 /* Trying to access a BUILD_PROC_NAME file will fail on systems without
    /proc support, and even on systems *with* ProcFS support.  Return
@@ -61,3 +35,10 @@
    || (Errno) == EPERM || (Errno) == EACCES	\
    || (Errno) == ENOSYS /* Solaris 8 */		\
    || (Errno) == EOPNOTSUPP /* FreeBSD */)
+
+/* Wrapper function shared among linkat and renameat.  */
+int at_func2 (int fd1, char const *file1,
+	      int fd2, char const *file2,
+	      int (*func) (char const *file1, char const *file2));
+
+#endif /* _GL_HEADER_OPENAT_PRIV */