diff options
Diffstat (limited to 'src/rmt.h')
-rw-r--r-- | src/rmt.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/rmt.h b/src/rmt.h new file mode 100644 index 0000000..5edea96 --- /dev/null +++ b/src/rmt.h @@ -0,0 +1,98 @@ +/* Definitions for communicating with a remote tape drive. +Copyright (C) 1988, 1992, 2001 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 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 General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#if !defined(_POSIX_VERSION) +#ifdef __MSDOS__ +#include <io.h> +#else /* !__MSDOS__ */ +extern off_t lseek (); +#endif /* __MSDOS__ */ +#endif /* _POSIX_VERSION */ + +#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 + +#else /* !NO_REMOTE */ + +#define __REM_BIAS 128 +#define RMTIOCTL + +#ifndef O_CREAT +#define O_CREAT 01000 +#endif + +extern char *__rmt_path; + +#if defined(STDC_HEADERS) || defined(HAVE_STRING_H) +#include <string.h> +#ifndef index +#define index strchr +#endif +#else +extern char *index (); +#endif + +#define _remdev(path) (!f_force_local && (__rmt_path=index(path, ':'))) +#define _isrmt(fd) ((fd) >= __REM_BIAS) + +#define rmtopen(path,oflag,mode,rsh) (_remdev(path) ? __rmt_open(path, oflag, mode, __REM_BIAS,rsh) : 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, rsh) (_remdev(path) ? __rmt_open (path, 1 | O_CREAT, mode, __REM_BIAS, rsh) : 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 + +int __rmt_open (); +int __rmt_close (); +int __rmt_read (); +int __rmt_write (); +long __rmt_lseek (); +int __rmt_ioctl (); +#endif /* !NO_REMOTE */ |