X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffseterr.c;h=eaad702c81d61c98f4a005af5c435ced2c9bd8dc;hb=5b9e0c3ce734b9d9b0c0001e31b65a8a4713700d;hp=5ff8ba7e79263d33636b832a12b6aa3d51532afc;hpb=ff7df21b6740d7da4f9bcf56f03b9c5b209f6996;p=gnulib.git

diff --git a/lib/fseterr.c b/lib/fseterr.c
index 5ff8ba7e7..eaad702c8 100644
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -1,43 +1,61 @@
 /* Set the error indicator of a stream.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
 /* Specification.  */
 #include "fseterr.h"
 
+#include <errno.h>
+
+#include "stdio-impl.h"
+
 void
 fseterr (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 */
   fp->_flags |= _IO_ERR_SEEN;
-#elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
-  fp->_flags |= __SERR;
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
-  fp->_flag |= _IOERR;
-#else                               /* unknown  */
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+  fp_->_flags |= __SERR;
+#elif defined __EMX__               /* emx+gcc */
+  fp->_flags |= _IOERR;
+#elif defined __minix               /* Minix */
+  fp->_flags |= _IOERR;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
+  fp_->_flag |= _IOERR;
+#elif defined __UCLIBC__            /* uClibc */
+  fp->__modeflags |= __FLAG_ERROR;
+#elif defined __QNX__               /* QNX */
+  fp->_Mode |= 0x200 /* _MERR */;
+#elif defined __MINT__              /* Atari FreeMiNT */
+  fp->__error = 1;
+#elif 0                             /* unknown  */
   /* Portable fallback, based on an idea by Rich Felker.
-     Wow! 6 system calls for something that is just a bit operation!  */
+     Wow! 6 system calls for something that is just a bit operation!
+     Not activated on any system, because there is no way to repair FP when
+     the sequence of system calls fails, and library code should not call
+     abort().  */
+  int saved_errno;
   int fd;
   int fd2;
 
+  saved_errno = errno;
   fflush (fp);
   fd = fileno (fp);
   fd2 = dup (fd);
@@ -47,9 +65,12 @@ fseterr (FILE *fp)
       fputc ('\0', fp); /* This should set the error indicator.  */
       fflush (fp);      /* Or this.  */
       if (dup2 (fd2, fd) < 0)
-	/* Whee... we botched the stream and now cannot restore it!  */
-	abort ();
+        /* Whee... we botched the stream and now cannot restore it!  */
+        abort ();
       close (fd2);
     }
+  errno = saved_errno;
+#else
+ #error "Please port gnulib fseterr.c to your platform! Look at the definitions of ferror and clearerr on your system, then report this to bug-gnulib."
 #endif
 }