X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fftello.c;h=fbdc44f2ea8691a00c626054a66fb3e7413544f3;hb=cbfeef01ad4ed6d3f68c3deb3c05d3b8102c84ff;hp=6c57d45ebc5156dd87e10420bb18b53976219147;hpb=3030c5b5e0a5199e16b05927da72c43c42f211c3;p=gnulib.git

diff --git a/lib/ftello.c b/lib/ftello.c
index 6c57d45eb..fbdc44f2e 100644
--- a/lib/ftello.c
+++ b/lib/ftello.c
@@ -1,5 +1,5 @@
 /* An ftello() function that works around platform bugs.
-   Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2011 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
@@ -22,14 +22,15 @@
 /* Get lseek.  */
 #include <unistd.h>
 
+#include "stdio-impl.h"
+
+off_t
+ftello (FILE *fp)
 #undef ftello
 #if !HAVE_FTELLO
 # undef ftell
 # define ftello ftell
 #endif
-
-off_t
-rpl_ftello (FILE *fp)
 {
 #if LSEEK_PIPE_BROKEN
   /* mingw gives bogus answers rather than failure on non-seekable files.  */
@@ -37,6 +38,28 @@ rpl_ftello (FILE *fp)
     return -1;
 #endif
 
+#if FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE /* Solaris */
+  /* The Solaris stdio leaves the _IOREAD flag set after reading from a file
+     reaches EOF and the program then starts writing to the file.  ftello
+     gets confused by this.  */
+  if (fp_->_flag & _IOWRT)
+    {
+      off_t pos;
+
+      /* Call ftello nevertheless, for the side effects that it does on fp.  */
+      ftello (fp);
+
+      /* Compute the file position ourselves.  */
+      pos = lseek (fileno (fp), (off_t) 0, SEEK_CUR);
+      if (pos >= 0)
+        {
+          if ((fp_->_flag & _IONBF) == 0 && fp_->_base != NULL)
+            pos += fp_->_ptr - fp_->_base;
+        }
+      return pos;
+    }
+#endif
+
 #if defined __SL64 && defined __SCLE /* Cygwin */
   if ((fp->_flags & __SL64) == 0)
     {