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rmt.h
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/*****************************************************************************
* $Id: rmt.h,v 1.2 1992/09/02 20:08:45 ak Exp $
*****************************************************************************
* $Log: rmt.h,v $
* Revision 1.2 1992/09/02 20:08:45 ak
* Version AK200
* - Tape access
* - Quick file access
* - OS/2 extended attributes
* - Some OS/2 fixes
* - Some fixes of Kai Uwe Rommel
*
* Revision 1.1.1.1 1992/09/02 19:22:36 ak
* Original GNU Tar 1.10 with some filenames changed for FAT compatibility.
*
* Revision 1.1 1992/09/02 19:22:35 ak
* Initial revision
*
*****************************************************************************/
/*
* Modified by Andreas Kaiser July 92.
* See CHANGES.AK for info.
*/
/* Remote tape drive defines for tar.
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 1, 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. */
#ifdef NO_REMOTE
#define _isrmt(f) 0
#define rmtopen open
#define rmtaccess access
#define rmtstat stat
#define rmtcreat creat
#define rmtlstat lstat
#define rmtread read
#define rmtwrite write
#define rmtlseek lseek
#define rmtclose close
#define rmtioctl ioctl
#define rmtdup dup
#define rmtfstat fstat
#define rmtfcntl fcntl
#define rmtisatty isatty
extern long lseek();
#else
#ifndef USG
#define strchr index
#endif
#define __REM_BIAS 128
#define RMTIOCTL
#ifndef O_CREAT
#define O_CREAT 01000
#endif
extern char *__rmt_path;
/* extern char *strchr(); */
#ifdef TAPE_IO
# define _isdisk(path) (isalpha(path[0]) && path[1]==':' && !path[2])
# define _remdev(path) (strchr(path, '+') || _isdisk(path))
#else
# define _remdev(path) ((__rmt_path=strchr(path, ':')) && strncmp(__rmt_path, ":/dev/", 6)==0)
#endif
#define _isrmt(fd) ((fd) >= __REM_BIAS)
extern long __rmt_lseek(); /*AK*/
#define rmtopen(path,oflag,mode) (_remdev(path) ? __rmt_open(path, oflag, mode, __REM_BIAS) : open(path, oflag, mode))
#define rmtaccess(path, amode) (_remdev(path) ? 0 : access(path, amode))
#define rmtstat(path, buf) (_remdev(path) ? (errno = EOPNOTSUPP), -1 : stat(path, buf))
#define rmtcreat(path, mode) (_remdev(path) ? __rmt_open (path, O_WRONLY|O_CREAT|O_BINARY, mode, __REM_BIAS) : creat(path, mode))
#define rmtlstat(path,buf) (_remdev(path) ? (errno = EOPNOTSUPP), -1 : lstat(path,buf))
#define rmtread(fd, buf, n) (_isrmt(fd) ? __rmt_read(fd - __REM_BIAS, buf, n) : read(fd, buf, n))
#define rmtwrite(fd, buf, n) (_isrmt(fd) ? __rmt_write(fd - __REM_BIAS, buf, n) : write(fd, buf, n))
#define rmtlseek(fd, off, wh) (_isrmt(fd) ? __rmt_lseek(fd - __REM_BIAS, off, wh) : lseek(fd, off, wh))
#define rmtclose(fd) (_isrmt(fd) ? __rmt_close(fd - __REM_BIAS) : close(fd))
#ifdef RMTIOCTL
#define rmtioctl(fd,req,arg) (_isrmt(fd) ? __rmt_ioctl(fd - __REM_BIAS, req, arg) : ioctl(fd, req, arg))
#else
#define rmtioctl(fd,req,arg) (_isrmt(fd) ? (errno = EOPNOTSUPP), -1 : ioctl(fd, req, arg))
#endif
#define rmtdup(fd) (_isrmt(fd) ? (errno = EOPNOTSUPP), -1 : dup(fd))
#define rmtfstat(fd, buf) (_isrmt(fd) ? (errno = EOPNOTSUPP), -1 : fstat(fd, buf))
#define rmtfcntl(fd,cmd,arg) (_isrmt(fd) ? (errno = EOPNOTSUPP), -1 : fcntl (fd, cmd, arg))
#define rmtisatty(fd) (_isrmt(fd) ? 0 : isatty(fd))
#undef RMTIOCTL
extern long lseek(),__rmt_lseek();
#endif