X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffreading.c;h=4da0e31bb28be6651cce1399b8b22e008f0fe4f0;hb=84405cbc35207f178b1b50617254cb85ea803128;hp=cbe4d7e7537619728cea86d0b8f89f5f14e09060;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/lib/freading.c b/lib/freading.c
index cbe4d7e75..4da0e31bb 100644
--- a/lib/freading.c
+++ b/lib/freading.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2009 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
@@ -19,9 +19,11 @@
 /* Specification.  */
 #include "freading.h"
 
-/* Don't use glibc's __freading function, see
+#include "stdio-impl.h"
+
+/* Don't use glibc's __freading function in glibc < 2.7, see
    <http://sourceware.org/bugzilla/show_bug.cgi?id=4359>  */
-#if !(HAVE___FREADING && !defined __GLIBC__)
+#if !(HAVE___FREADING && (!defined __GLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)))
 
 bool
 freading (FILE *fp)
@@ -29,19 +31,31 @@ freading (FILE *fp)
   /* Most systems provide FILE as a struct and the necessary bitmask in
      <stdio.h>, because they need it for implementing getc() and putc() as
      fast macros.  */
-#if defined _IO_ferror_unlocked     /* GNU libc, BeOS */
+#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
   return ((fp->_flags & _IO_NO_WRITES) != 0
 	  || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
 	      && fp->_IO_read_base != NULL));
-#elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
-  return (fp->_flags & __SRD) != 0;
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+  return (fp_->_flags & __SRD) != 0;
+#elif defined __EMX__               /* emx+gcc */
+  return (fp->_flags & _IOREAD) != 0;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
   return (fp->_flag & _IOREAD) != 0;
 #elif defined __UCLIBC__            /* uClibc */
   return (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) != 0;
 #elif defined __QNX__               /* QNX */
-  return ((fp->_Mode & _MOPENW) == 0
-	  || (fp->_Mode & _MREAD) != 0);
+  return ((fp->_Mode & 0x2 /* _MOPENW */) == 0
+	  || (fp->_Mode & 0x1000 /* _MREAD */) != 0);
+#elif defined __MINT__              /* Atari FreeMiNT */
+  if (!fp->__mode.__write)
+    return 1;
+  if (!fp->__mode.__read)
+    return 0;
+# ifdef _IO_CURRENTLY_GETTING /* Flag added on 2009-02-28 */
+  return (fp->__flags & _IO_CURRENTLY_GETTING) != 0;
+# else
+  return (fp->__buffer < fp->__get_limit /*|| fp->__bufp == fp->__put_limit ??*/);
+# endif
 #else
  #error "Please port gnulib freading.c to your platform!"
 #endif