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-rw-r--r--libio/iofsetpos64.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/libio/iofsetpos64.c b/libio/iofsetpos64.c
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+/* Copyright (C) 1993, 1995, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU IO Library.
+
+ This library 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.
+
+ This library 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 library; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, if you link this library with files
+ compiled with a GNU compiler to produce an executable, this does
+ not cause the resulting executable to be covered by the GNU General
+ Public License. This exception does not however invalidate any
+ other reasons why the executable file might be covered by the GNU
+ General Public License. */
+
+#include <libioP.h>
+#include <errno.h>
+
+int
+_IO_fsetpos64 (fp, posp)
+ _IO_FILE *fp;
+ const _IO_fpos64_t *posp;
+{
+#ifdef _G_LSEEK64
+ int result;
+ CHECK_FILE (fp, EOF);
+ _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+ _IO_flockfile (fp);
+ if (_IO_seekpos (fp, *posp, _IOS_INPUT|_IOS_OUTPUT) == _IO_pos_BAD)
+ {
+ /* ANSI explicitly requires setting errno to a positive value on
+ failure. */
+#ifdef EIO
+ if (errno == 0)
+ __set_errno (EIO);
+#endif
+ result = EOF;
+ }
+ else
+ result = 0;
+ _IO_cleanup_region_end (1);
+ return result;
+#else
+ __set_errno (ENOSYS);
+ return EOF;
+#endif
+}
+
+#ifdef weak_alias
+weak_alias (_IO_fsetpos64, fsetpos64)
+#endif