Mercurial > hg > octave-shane > gnulib-hg
view lib/freadahead.c @ 15727:144db791c6fa
Ensure EBADF returns for socket functions on mingw.
* lib/accept.c (rpl_accept): Fail with error EBADF if the file
descriptor is invalid.
* lib/bind.c (rpl_bind): Likewise.
* lib/connect.c (rpl_connect): Likewise.
* lib/getpeername.c (rpl_getpeername): Likewise.
* lib/getsockname.c (rpl_getsockname): Likewise.
* lib/getsockopt.c (rpl_getsockopt): Likewise.
* lib/listen.c (rpl_listen): Likewise.
* lib/recv.c (rpl_recv): Likewise.
* lib/recvfrom.c (rpl_recvfrom): Likewise.
* lib/send.c (rpl_send): Likewise.
* lib/sendto.c (rpl_sendto): Likewise.
* lib/setsockopt.c (rpl_setsockopt): Likewise.
* lib/shutdown.c (rpl_shutdown): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Wed, 21 Sep 2011 00:20:59 +0200 |
parents | 20a2699b8a90 |
children | 8250f2777afc |
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/* Retrieve information about a FILE stream. 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 General Public License as published by 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 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 program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> /* Specification. */ #include "freadahead.h" #include <stdlib.h> #include "stdio-impl.h" size_t freadahead (FILE *fp) { #if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ if (fp->_IO_write_ptr > fp->_IO_write_base) return 0; return (fp->_IO_read_end - fp->_IO_read_ptr) + (fp->_flags & _IO_IN_BACKUP ? fp->_IO_save_end - fp->_IO_save_base : 0); #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0) return 0; # if defined __DragonFly__ return __sreadahead (fp); # else return fp_->_r + (HASUB (fp) ? fp_->_ur : 0); # endif #elif defined __EMX__ /* emx+gcc */ if ((fp->_flags & _IOWRT) != 0) return 0; /* Note: fp->_ungetc_count > 0 implies fp->_rcount <= 0, fp->_ungetc_count = 0 implies fp->_rcount >= 0. */ /* equivalent to (fp->_ungetc_count == 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount) */ return (fp->_rcount > 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount); #elif defined __minix /* Minix */ if ((fp_->_flags & _IOWRITING) != 0) return 0; return fp_->_count; #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */ if ((fp_->_flag & _IOWRT) != 0) return 0; return fp_->_cnt; #elif defined __UCLIBC__ /* uClibc */ # ifdef __STDIO_BUFFERS if (fp->__modeflags & __FLAG_WRITING) return 0; return (fp->__bufread - fp->__bufpos) + (fp->__modeflags & __FLAG_UNGOT ? 1 : 0); # else return 0; # endif #elif defined __QNX__ /* QNX */ if ((fp->_Mode & 0x2000 /* _MWRITE */) != 0) return 0; /* fp->_Buf <= fp->_Next <= fp->_Rend, and fp->_Rend may be overridden by fp->_Rsave. */ return ((fp->_Rsave ? fp->_Rsave : fp->_Rend) - fp->_Next) + (fp->_Mode & 0x4000 /* _MBYTE */ ? (fp->_Back + sizeof (fp->_Back)) - fp->_Rback : 0); #elif defined __MINT__ /* Atari FreeMiNT */ if (!fp->__mode.__read) return 0; return (fp->__pushed_back ? fp->__get_limit - fp->__pushback_bufp + 1 : fp->__get_limit - fp->__bufp); #elif defined SLOW_BUT_NO_HACKS /* users can define this */ abort (); return 0; #else #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib." #endif }