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/*
$Id: xa.c,v 1.3 2005/01/01 02:43:57 rockyb Exp $
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
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 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
/* Public headers */
#include <cdio/iso9660.h>
#include <cdio/util.h>
#include <cdio/bytesex.h>
/* Private headers */
#include "cdio_assert.h"
#define BUF_COUNT 16
#define BUF_SIZE 80
/* Return a pointer to a internal free buffer */
static char *
_getbuf (void)
{
static char _buf[BUF_COUNT][BUF_SIZE];
static int _num = -1;
_num++;
_num %= BUF_COUNT;
memset (_buf[_num], 0, BUF_SIZE);
return _buf[_num];
}
/*!
Returns a string which interpreting the extended attribute xa_attr.
For example:
\verbatim
d---1xrxrxr
---2--r-r-r
-a--1xrxrxr
\endverbatim
A description of the characters in the string follows
The 1st character is either "d" if the entry is a directory, or "-" if not.
The 2nd character is either "a" if the entry is CDDA (audio), or "-" if not.
The 3rd character is either "i" if the entry is interleaved, or "-" if not.
The 4th character is either "2" if the entry is mode2 form2 or "-" if not.
The 5th character is either "1" if the entry is mode2 form1 or "-" if not.
Note that an entry will either be in mode2 form1 or mode form2. That
is you will either see "2-" or "-1" in the 4th & 5th positions.
The 6th and 7th characters refer to permissions for a user while the
the 8th and 9th characters refer to permissions for a group while, and
the 10th and 11th characters refer to permissions for a others.
In each of these pairs the first character (6, 8, 10) is "x" if the
entry is executable. For a directory this means the directory is
allowed to be listed or "searched".
The second character of a pair (7, 9, 11) is "r" if the entry is allowed
to be read.
*/
const char *
iso9660_get_xa_attr_str (uint16_t xa_attr)
{
char *result = _getbuf();
xa_attr = uint16_from_be (xa_attr);
result[ 0] = (xa_attr & XA_ATTR_DIRECTORY) ? 'd' : '-';
result[ 1] = (xa_attr & XA_ATTR_CDDA) ? 'a' : '-';
result[ 2] = (xa_attr & XA_ATTR_INTERLEAVED) ? 'i' : '-';
result[ 3] = (xa_attr & XA_ATTR_MODE2FORM2) ? '2' : '-';
result[ 4] = (xa_attr & XA_ATTR_MODE2FORM1) ? '1' : '-';
result[ 5] = (xa_attr & XA_PERM_XUSR) ? 'x' : '-';
result[ 6] = (xa_attr & XA_PERM_RUSR) ? 'r' : '-';
result[ 7] = (xa_attr & XA_PERM_XGRP) ? 'x' : '-';
result[ 8] = (xa_attr & XA_PERM_RGRP) ? 'r' : '-';
/* Hack alert: wonder if this should be ROTH and XOTH? */
result[ 9] = (xa_attr & XA_PERM_XSYS) ? 'x' : '-';
result[10] = (xa_attr & XA_PERM_RSYS) ? 'r' : '-';
result[11] = '\0';
return result;
}
iso9660_xa_t *
iso9660_xa_init (iso9660_xa_t *_xa, uint16_t uid, uint16_t gid, uint16_t attr,
uint8_t filenum)
{
cdio_assert (_xa != NULL);
_xa->user_id = uint16_to_be (uid);
_xa->group_id = uint16_to_be (gid);
_xa->attributes = uint16_to_be (attr);
_xa->signature[0] = 'X';
_xa->signature[1] = 'A';
_xa->filenum = filenum;
_xa->reserved[0]
= _xa->reserved[1]
= _xa->reserved[2]
= _xa->reserved[3]
= _xa->reserved[4] = 0x00;
return _xa;
}
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