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[glibc/history.git] / libio / iofsetpos64.c
blob5ef810499887570ba9d47851fb576968fe2ed08f
1 /* Copyright (C) 1993, 1995, 1997, 1998, 1999, 2000, 2002, 2003
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA.
20 As a special exception, if you link the code in this file with
21 files compiled with a GNU compiler to produce an executable,
22 that does not cause the resulting executable to be covered by
23 the GNU Lesser General Public License. This exception does not
24 however invalidate any other reasons why the executable file
25 might be covered by the GNU Lesser General Public License.
26 This exception applies to code released by its copyright holders
27 in files containing the exception. */
29 #include <libioP.h>
30 #include <errno.h>
31 #include <shlib-compat.h>
33 int
34 _IO_new_fsetpos64 (fp, posp)
35 _IO_FILE *fp;
36 const _IO_fpos64_t *posp;
38 #ifdef _G_LSEEK64
39 int result;
40 CHECK_FILE (fp, EOF);
41 _IO_acquire_lock (fp);
42 if (_IO_seekpos_unlocked (fp, posp->__pos, _IOS_INPUT|_IOS_OUTPUT)
43 == _IO_pos_BAD)
45 /* ANSI explicitly requires setting errno to a positive value on
46 failure. */
47 #ifdef EIO
48 if (errno == 0)
49 __set_errno (EIO);
50 #endif
51 result = EOF;
53 else
55 result = 0;
56 if (fp->_mode > 0
57 && (*fp->_codecvt->__codecvt_do_encoding) (fp->_codecvt) < 0)
58 /* This is a stateful encoding, safe the state. */
59 fp->_wide_data->_IO_state = posp->__state;
61 _IO_release_lock (fp);
62 return result;
63 #else
64 __set_errno (ENOSYS);
65 return EOF;
66 #endif
69 strong_alias (_IO_new_fsetpos64, __new_fsetpos64)
70 versioned_symbol (libc, __new_fsetpos64, fsetpos64, GLIBC_2_2);
71 versioned_symbol (libc, _IO_new_fsetpos64, _IO_fsetpos64, GLIBC_2_2);