NEWS.stable: log cherry-pick [e446f25]->[c092018] relocatable-shell: Update suggested...

[gnulib.git] / lib / fseterr.c

diff --git a/lib/fseterr.c b/lib/fseterr.c
index 3f87615..1e212e4 100644 (file)
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -1,19 +1,18 @@
 /* Set the error indicator of a stream.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2014 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>
 
@@ -22,21 +21,39 @@
 
 #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, Mac OS 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 defined EPLAN9                /* Plan9 */
+  if (fp->state != 0 /* CLOSED */)
+    fp->state = 5 /* ERR */;
+#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;
@@ -51,10 +68,12 @@ 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
 }