Fix getloadavg.c on Tru64 4.0D.

[gnulib.git] / lib / fseterr.c

diff --git a/lib/fseterr.c b/lib/fseterr.c
index 5ff8ba7..4ca0a34 100644 (file)
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -1,25 +1,26 @@
 /* Set the error indicator of a stream.
    Copyright (C) 2007 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>
+
 void
 fseterr (FILE *fp)
 {
@@ -31,13 +32,33 @@ fseterr (FILE *fp)
 #elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
   fp->_flags |= __SERR;
 #elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
+# if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
+#  define fp_ ((struct { unsigned char *_ptr; \
+                        unsigned char *_base; \
+                        unsigned char *_end; \
+                        long _cnt; \
+                        int _file; \
+                        unsigned int _flag; \
+                      } *) fp)
+  fp_->_flag |= _IOERR;
+# else
   fp->_flag |= _IOERR;
-#else                               /* unknown  */
+# endif
+#elif defined __UCLIBC__            /* uClibc */
+  fp->__modeflags |= __FLAG_ERROR;
+#elif defined __QNX__               /* QNX */
+  fp->_Mode |= _MERR;
+#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);
@@ -51,5 +72,8 @@ fseterr (FILE *fp)
        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
 }