1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* An fseeko() function that, together with fflush(), is POSIX compliant.
4 Copyright (C) 2007-2008 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* Get off_t and lseek. */
28 #include "stdio-impl.h"
37 rpl_fseeko (FILE *fp, off_t offset, int whence)
40 /* mingw gives bogus answers rather than failure on non-seekable files. */
41 if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
45 /* These tests are based on fpurge.c. */
46 #if defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
47 if (fp->_IO_read_end == fp->_IO_read_ptr
48 && fp->_IO_write_ptr == fp->_IO_write_base
49 && fp->_IO_save_base == NULL)
50 #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
51 # if defined __SL64 && defined __SCLE /* Cygwin */
52 if ((fp->_flags & __SL64) == 0)
54 /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
55 mode; but has an fseeko that requires 64-bit mode. */
56 FILE *tmp = fopen ("/dev/null", "r");
60 fp->_seek64 = tmp->_seek64;
64 if (fp_->_p == fp_->_bf._base
66 && fp_->_w == ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
69 && fp_ub._base == NULL)
70 #elif defined __EMX__ /* emx+gcc */
71 if (fp->_ptr == fp->_buffer
74 && fp->_ungetc_count == 0)
75 #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
76 if (fp_->_ptr == fp_->_base
77 && (fp_->_ptr == NULL || fp_->_cnt == 0))
78 #elif defined __UCLIBC__ /* uClibc */
79 if (((fp->__modeflags & __FLAG_WRITING) == 0
80 || fp->__bufpos == fp->__bufstart)
81 && ((fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) == 0
82 || fp->__bufpos == fp->__bufread))
83 #elif defined __QNX__ /* QNX */
84 if ((fp->_Mode & _MWRITE ? fp->_Next == fp->_Buf : fp->_Next == fp->_Rend)
85 && fp->_Rback == fp->_Back + sizeof (fp->_Back)
86 && fp->_Rsave == NULL)
88 #error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
91 off_t pos = lseek (fileno (fp), offset, whence);
94 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
95 fp_->_flags &= ~__SOFF;
101 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
103 fp_->_flags |= __SOFF;
104 fp_->_flags &= ~__SEOF;
105 #elif defined __EMX__ /* emx+gcc */
106 fp->_flags &= ~_IOEOF;
107 #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
108 fp->_flag &= ~_IOEOF;
114 return fseeko (fp, offset, whence);