diff options
Diffstat (limited to 'lib/fseeko.c')
| -rw-r--r-- | lib/fseeko.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/lib/fseeko.c b/lib/fseeko.c deleted file mode 100644 index e55a42bf2..000000000 --- a/lib/fseeko.c +++ /dev/null @@ -1,146 +0,0 @@ -/* An fseeko() function that, together with fflush(), is POSIX compliant. - Copyright (C) 2007-2011 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2, 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 Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser 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. */ - -#include <config.h> - -/* Specification. */ -#include <stdio.h> - -/* Get off_t and lseek. */ -#include <unistd.h> - -#include "stdio-impl.h" - -int -fseeko (FILE *fp, off_t offset, int whence) -#undef fseeko -#if !HAVE_FSEEKO -# undef fseek -# define fseeko fseek -#endif -{ -#if LSEEK_PIPE_BROKEN - /* mingw gives bogus answers rather than failure on non-seekable files. */ - if (lseek (fileno (fp), 0, SEEK_CUR) == -1) - return EOF; -#endif - - /* These tests are based on fpurge.c. */ -#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ - if (fp->_IO_read_end == fp->_IO_read_ptr - && fp->_IO_write_ptr == fp->_IO_write_base - && fp->_IO_save_base == NULL) -#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ -# if defined __SL64 && defined __SCLE /* Cygwin */ - if ((fp->_flags & __SL64) == 0) - { - /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit - mode; but has an fseeko that requires 64-bit mode. */ - FILE *tmp = fopen ("/dev/null", "r"); - if (!tmp) - return -1; - fp->_flags |= __SL64; - fp->_seek64 = tmp->_seek64; - fclose (tmp); - } -# endif - if (fp_->_p == fp_->_bf._base - && fp_->_r == 0 - && fp_->_w == ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */ - ? fp_->_bf._size - : 0) - && fp_ub._base == NULL) -#elif defined __EMX__ /* emx+gcc */ - if (fp->_ptr == fp->_buffer - && fp->_rcount == 0 - && fp->_wcount == 0 - && fp->_ungetc_count == 0) -#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */ - if (fp_->_ptr == fp_->_base - && (fp_->_ptr == NULL || fp_->_cnt == 0)) -#elif defined __UCLIBC__ /* uClibc */ - if (((fp->__modeflags & __FLAG_WRITING) == 0 - || fp->__bufpos == fp->__bufstart) - && ((fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) == 0 - || fp->__bufpos == fp->__bufread)) -#elif defined __QNX__ /* QNX */ - if ((fp->_Mode & 0x2000 /* _MWRITE */ ? fp->_Next == fp->_Buf : fp->_Next == fp->_Rend) - && fp->_Rback == fp->_Back + sizeof (fp->_Back) - && fp->_Rsave == NULL) -#elif defined __MINT__ /* Atari FreeMiNT */ - if (fp->__bufp == fp->__buffer - && fp->__get_limit == fp->__bufp - && fp->__put_limit == fp->__bufp - && !fp->__pushed_back) -#else - #error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib." -#endif - { - /* We get here when an fflush() call immediately preceded this one. We - know there are no buffers. - POSIX requires us to modify the file descriptor's position. - But we cannot position beyond end of file here. */ - off_t pos = - lseek (fileno (fp), - whence == SEEK_END && offset > 0 ? 0 : offset, - whence); - if (pos == -1) - { -#if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ - fp_->_flags &= ~__SOFF; -#endif - return -1; - } - -#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ - fp->_flags &= ~_IO_EOF_SEEN; -#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ -# if defined __CYGWIN__ - /* fp_->_offset is typed as an integer. */ - fp_->_offset = pos; -# else - /* fp_->_offset is an fpos_t. */ - { - /* Use a union, since on NetBSD, the compilation flags - determine whether fpos_t is typedef'd to off_t or a struct - containing a single off_t member. */ - union - { - fpos_t f; - off_t o; - } u; - u.o = pos; - fp_->_offset = u.f; - } -# endif - fp_->_flags |= __SOFF; - fp_->_flags &= ~__SEOF; -#elif defined __EMX__ /* emx+gcc */ - fp->_flags &= ~_IOEOF; -#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */ - fp->_flag &= ~_IOEOF; -#elif defined __MINT__ /* Atari FreeMiNT */ - fp->__offset = pos; - fp->__eof = 0; -#endif - /* If we were not requested to position beyond end of file, we're - done. */ - if (!(whence == SEEK_END && offset > 0)) - return 0; - } - return fseeko (fp, offset, whence); -} |