diff options
Diffstat (limited to 'contrib/cpio/lib/rmt.h')
-rw-r--r-- | contrib/cpio/lib/rmt.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/contrib/cpio/lib/rmt.h b/contrib/cpio/lib/rmt.h new file mode 100644 index 0000000..1fd2f29 --- /dev/null +++ b/contrib/cpio/lib/rmt.h @@ -0,0 +1,99 @@ +/* Definitions for communicating with a remote tape drive. + + Copyright (C) 1988, 1992, 1996, 1997, 2001, 2003, 2004 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. */ + +extern char *rmt_command; +extern char *rmt_dev_name__; + +int rmt_open__ (const char *, int, int, const char *); +int rmt_close__ (int); +size_t rmt_read__ (int, char *, size_t); +size_t rmt_write__ (int, char *, size_t); +off_t rmt_lseek__ (int, off_t, int); +int rmt_ioctl__ (int, int, char *); + +extern bool force_local_option; + +/* A filename is remote if it contains a colon not preceded by a slash, + to take care of `/:/' which is a shorthand for `/.../<CELL-NAME>/fs' + on machines running OSF's Distributing Computing Environment (DCE) and + Distributed File System (DFS). However, when --force-local, a + filename is never remote. */ + +#define _remdev(dev_name) \ + (!force_local_option && (rmt_dev_name__ = strchr (dev_name, ':')) \ + && rmt_dev_name__ > (dev_name) \ + && ! memchr (dev_name, '/', rmt_dev_name__ - (dev_name))) + +#define _isrmt(fd) \ + ((fd) >= __REM_BIAS) + +#define __REM_BIAS (1 << 30) + +#ifndef O_CREAT +# define O_CREAT 01000 +#endif + +#define rmtopen(dev_name, oflag, mode, command) \ + (_remdev (dev_name) ? rmt_open__ (dev_name, oflag, __REM_BIAS, command) \ + : open (dev_name, oflag, mode)) + +#define rmtaccess(dev_name, amode) \ + (_remdev (dev_name) ? 0 : access (dev_name, amode)) + +#define rmtstat(dev_name, buffer) \ + (_remdev (dev_name) ? (errno = EOPNOTSUPP), -1 : stat (dev_name, buffer)) + +#define rmtcreat(dev_name, mode, command) \ + (_remdev (dev_name) \ + ? rmt_open__ (dev_name, 1 | O_CREAT, __REM_BIAS, command) \ + : creat (dev_name, mode)) + +#define rmtlstat(dev_name, muffer) \ + (_remdev (dev_name) ? (errno = EOPNOTSUPP), -1 : lstat (dev_name, buffer)) + +#define rmtread(fd, buffer, length) \ + (_isrmt (fd) ? rmt_read__ (fd - __REM_BIAS, buffer, length) \ + : safe_read (fd, buffer, length)) + +#define rmtwrite(fd, buffer, length) \ + (_isrmt (fd) ? rmt_write__ (fd - __REM_BIAS, buffer, length) \ + : full_write (fd, buffer, length)) + +#define rmtlseek(fd, offset, where) \ + (_isrmt (fd) ? rmt_lseek__ (fd - __REM_BIAS, offset, where) \ + : lseek (fd, offset, where)) + +#define rmtclose(fd) \ + (_isrmt (fd) ? rmt_close__ (fd - __REM_BIAS) : close (fd)) + +#define rmtioctl(fd, request, argument) \ + (_isrmt (fd) ? rmt_ioctl__ (fd - __REM_BIAS, request, argument) \ + : ioctl (fd, request, argument)) + +#define rmtdup(fd) \ + (_isrmt (fd) ? (errno = EOPNOTSUPP), -1 : dup (fd)) + +#define rmtfstat(fd, buffer) \ + (_isrmt (fd) ? (errno = EOPNOTSUPP), -1 : fstat (fd, buffer)) + +#define rmtfcntl(cd, command, argument) \ + (_isrmt (fd) ? (errno = EOPNOTSUPP), -1 : fcntl (fd, command, argument)) + +#define rmtisatty(fd) \ + (_isrmt (fd) ? 0 : isatty (fd)) |