Copyright (C) 2003-2006 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2003.
- 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
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
/* Specification. */
#include "fwriteerror.h"
#include <errno.h>
#include <stdbool.h>
-int
-fwriteerror (FILE *fp)
+static int
+do_fwriteerror (FILE *fp, bool ignore_ebadf)
{
/* State to allow multiple calls to fwriteerror (stdout). */
static bool stdout_closed = false;
- if (fp == stdout && stdout_closed)
- return 0;
+ if (fp == stdout)
+ {
+ if (stdout_closed)
+ return 0;
+
+ /* If we are closing stdout, don't attempt to do it later again. */
+ stdout_closed = true;
+ }
/* Need to
1. test the error indicator of the stream,
goto close_preserving_errno; /* errno is set here */
/* Give up on errno. */
errno = 0;
- close_preserving_errno:
- /* There's an error. Nevertheless call fclose(fp), for consistency
- with the other cases. */
- {
- int saved_errno = errno;
- fclose (fp);
- errno = saved_errno;
- return -1;
- }
+ goto close_preserving_errno;
}
- /* If we are closing stdout, don't attempt to do it later again. */
- if (fp == stdout)
- stdout_closed = true;
-
- if (fclose (fp))
- return -1; /* errno is set here */
+ if (ignore_ebadf)
+ {
+ /* We need an explicit fflush to tell whether some output was already
+ done on FP. */
+ if (fflush (fp))
+ goto close_preserving_errno; /* errno is set here */
+ if (fclose (fp) && errno != EBADF)
+ return -1; /* errno is set here */
+ }
+ else
+ {
+ if (fclose (fp))
+ return -1; /* errno is set here */
+ }
return 0;
+
+ close_preserving_errno:
+ /* There's an error. Nevertheless call fclose(fp), for consistency
+ with the other cases. */
+ {
+ int saved_errno = errno;
+ fclose (fp);
+ errno = saved_errno;
+ return -1;
+ }
+}
+
+int
+fwriteerror (FILE *fp)
+{
+ return do_fwriteerror (fp, false);
+}
+
+int
+fwriteerror_no_ebadf (FILE *fp)
+{
+ return do_fwriteerror (fp, true);
}