openat: port to AIX 7.1 with large files

[gnulib.git] / lib / openat.c

diff --git a/lib/openat.c b/lib/openat.c
index f2eac86..cc4b9d0 100644 (file)
--- a/lib/openat.c
+++ b/lib/openat.c
@@ -1,5 +1,5 @@
 /* provide a replacement openat function
-   Copyright (C) 2004-2010 Free Software Foundation, Inc.
+   Copyright (C) 2004-2011 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
@@ -16,8 +16,25 @@
 
 /* written by Jim Meyering */
 
+/* If the user's config.h happens to include <fcntl.h>, let it include only
+   the system's <fcntl.h> here, so that orig_openat doesn't recurse to
+   rpl_openat.  */
+#define __need_system_fcntl_h
 #include <config.h>
 
+/* Get the original definition of open.  It might be defined as a macro.  */
+#include <fcntl.h>
+#include <sys/types.h>
+#undef __need_system_fcntl_h
+
+#if HAVE_OPENAT
+static inline int
+orig_openat (int fd, char const *filename, int flags, mode_t mode)
+{
+  return openat (fd, filename, flags, mode);
+}
+#endif
+
 #include "openat.h"
 
 #include <stdarg.h>
@@ -25,14 +42,12 @@
 #include <string.h>
 #include <sys/stat.h>
 
-#include "dirname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+#include "dosname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
 #include "openat-priv.h"
 #include "save-cwd.h"
 
 #if HAVE_OPENAT
 
-# undef openat
-
 /* Like openat, but work around Solaris 9 bugs with trailing slash.  */
 int
 rpl_openat (int dfd, char const *filename, int flags, ...)
@@ -53,7 +68,7 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
       va_end (arg);
     }
 
-#if OPEN_TRAILING_SLASH_BUG
+# if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and one of O_CREAT, O_WRONLY, O_RDWR
      is specified, then fail.
      Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
@@ -84,11 +99,11 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
           return -1;
         }
     }
-#endif
+# endif
 
-  fd = openat (dfd, filename, flags, mode);
+  fd = orig_openat (dfd, filename, flags, mode);
 
-#if OPEN_TRAILING_SLASH_BUG
+# if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and fd does not refer to a directory,
      then fail.
      Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
@@ -117,7 +132,7 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
             }
         }
     }
-#endif
+# endif
 
   return fd;
 }
@@ -244,7 +259,7 @@ bool
 openat_needs_fchdir (void)
 {
   bool needs_fchdir = true;
-  int fd = open ("/", O_RDONLY);
+  int fd = open ("/", O_SEARCH);
 
   if (0 <= fd)
     {