X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffopen.c;h=8fead5a81a5bdec7e4433cc84cb32628a29a3870;hb=cd56634a4a8179fd5a4419fbb3e27211b042ab1c;hp=f64122b9f167c50f9ef61f8c40b796938d0a6b60;hpb=955345ebebdae2b894b5a3d8e21036335cb13e5d;p=gnulib.git

diff --git a/lib/fopen.c b/lib/fopen.c
index f64122b9f..8fead5a81 100644
--- a/lib/fopen.c
+++ b/lib/fopen.c
@@ -1,5 +1,5 @@
 /* Open a stream to a file.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2014 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
@@ -16,19 +16,36 @@
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
+/* If the user's config.h happens to include <stdio.h>, let it include only
+   the system's <stdio.h> here, so that orig_fopen doesn't recurse to
+   rpl_fopen.  */
+#define __need_FILE
 #include <config.h>
 
-/* Specification.  */
+/* Get the original definition of fopen.  It might be defined as a macro.  */
 #include <stdio.h>
+#undef __need_FILE
+
+static FILE *
+orig_fopen (const char *filename, const char *mode)
+{
+  return fopen (filename, mode);
+}
+
+/* Specification.  */
+/* Write "stdio.h" here, not <stdio.h>, otherwise OSF/1 5.1 DTK cc eliminates
+   this include because of the preliminary #include <stdio.h> above.  */
+#include "stdio.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 FILE *
 rpl_fopen (const char *filename, const char *mode)
-#undef fopen
 {
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
   if (strcmp (filename, "/dev/null") == 0)
@@ -56,37 +73,38 @@ rpl_fopen (const char *filename, const char *mode)
     size_t len = strlen (filename);
     if (len > 0 && filename[len - 1] == '/')
       {
-	int fd;
-	struct stat statbuf;
-	FILE *fp;
-
-	if (mode[0] == 'w' || mode[0] == 'a')
-	  {
-	    errno = EISDIR;
-	    return NULL;
-	  }
-
-	fd = open (filename, O_RDONLY);
-	if (fd < 0)
-	  return NULL;
-
-	if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
-	  {
-	    errno = ENOTDIR;
-	    return NULL;
-	  }
-
-	fp = fdopen (fd, mode);
-	if (fp == NULL)
-	  {
-	    int saved_errno = errno;
-	    close (fd);
-	    errno = saved_errno;
-	  }
-	return fp;
+        int fd;
+        struct stat statbuf;
+        FILE *fp;
+
+        if (mode[0] == 'w' || mode[0] == 'a')
+          {
+            errno = EISDIR;
+            return NULL;
+          }
+
+        fd = open (filename, O_RDONLY);
+        if (fd < 0)
+          return NULL;
+
+        if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+          {
+            close (fd);
+            errno = ENOTDIR;
+            return NULL;
+          }
+
+        fp = fdopen (fd, mode);
+        if (fp == NULL)
+          {
+            int saved_errno = errno;
+            close (fd);
+            errno = saved_errno;
+          }
+        return fp;
       }
   }
 # endif
 
-  return fopen (filename, mode);
+  return orig_fopen (filename, mode);
 }