X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=lib%2Ffreadahead.c;h=f2dae46bf3bc8312bde2391fcf1c1a6955ea157b;hb=1bbb35416d8da71e8146a4cb4f2dbab7b24cff39;hp=50ff27ee20a012c8d13c1a43cceaeb3c5098f77c;hpb=dc0ab95dbae38577efebe2283fc9b76e92ef4233;p=debian%2Fgzip

diff --git a/lib/freadahead.c b/lib/freadahead.c
index 50ff27e..f2dae46 100644
--- a/lib/freadahead.c
+++ b/lib/freadahead.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2010 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 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
@@ -31,7 +31,7 @@ freadahead (FILE *fp)
   return (fp->_IO_read_end - fp->_IO_read_ptr)
          + (fp->_flags & _IO_IN_BACKUP ? fp->_IO_save_end - fp->_IO_save_base :
             0);
-#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
   if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0)
     return 0;
 # if defined __DragonFly__
@@ -48,7 +48,11 @@ freadahead (FILE *fp)
   /* equivalent to
      (fp->_ungetc_count == 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount) */
   return (fp->_rcount > 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount);
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
+#elif defined __minix               /* Minix */
+  if ((fp_->_flags & _IOWRITING) != 0)
+    return 0;
+  return fp_->_count;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
   if ((fp_->_flag & _IOWRT) != 0)
     return 0;
   return fp_->_cnt;
@@ -76,6 +80,10 @@ freadahead (FILE *fp)
   return (fp->__pushed_back
           ? fp->__get_limit - fp->__pushback_bufp + 1
           : fp->__get_limit - fp->__bufp);
+#elif defined EPLAN9                /* Plan9 */
+  if (fp->state == 4 /* WR */ || fp->rp >= fp->wp)
+    return 0;
+  return fp->wp - fp->rp;
 #elif defined SLOW_BUT_NO_HACKS     /* users can define this */
   abort ();
   return 0;