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/* Defines for Sys V style 3-argument open call. Copyright (C) 1988 Free Software Foundation This file is part of GNU Tar. GNU Tar 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. GNU Tar 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 GNU Tar; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * open3.h -- #defines for the various flags for the Sys V style 3-argument * open() call. On BSD or System 5, the system already has this in an * include file. This file is needed for V7 and MINIX systems for the * benefit of open3() in port.c, a routine that emulates the 3-argument * call using system calls available on V7/MINIX. * * This file is needed by PD tar even if we aren't using the * emulator, since the #defines for O_WRONLY, etc. are used in * a couple of places besides the open() calls, (e.g. in the assignment * to openflag in extract.c). We just #include this rather than * #ifdef them out. * * Written 6/10/87 by rmtodd@uokmax (Richard Todd). * * The names have been changed by John Gilmore, 31 July 1987, since * Richard called it "bsdopen", and really this change was introduced in * AT&T Unix systems before BSD picked it up. */ /* Only one of the next three should be specified */ #define O_RDONLY 0 /* only allow read */ #define O_WRONLY 1 /* only allow write */ #define O_RDWR 2 /* both are allowed */ /* The rest of these can be OR-ed in to the above. */ /* * O_NDELAY isn't implemented by the emulator. It's only useful (to tar) on * systems that have named pipes anyway; it prevents tar's hanging by * opening a named pipe. We #ifndef it because some systems already have * it defined. */ #ifndef O_NDELAY #define O_NDELAY 4 /* don't block on opening devices that would * block on open -- ignored by emulator. */ #endif #define O_CREAT 8 /* create file if needed */ #define O_EXCL 16 /* file cannot already exist */ #define O_TRUNC 32 /* truncate file on open */ #define O_APPEND 64 /* always write at end of file -- ignored by emul */ #ifdef EMUL_OPEN3 /* * make emulation transparent to rest of file -- redirect all open() calls * to our routine */ #define open open3 #endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.