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iso9660.h
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iso9660.h
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/*
* Copyright 2009 Red Hat, 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 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, see <http://www.gnu.org/licenses/>.
*
* Author: Peter Jones <pjones@redhat.com>
*/
#ifndef ISO9660_H
#define ISO9660_H
#include "endian.h"
typedef char Sector[0x800];
/* ISO 9660 section 7.2.1 = 16 bit little endian */
#define cpu16_to_iso721(x) cpu_to_le16(x)
#define iso721_to_cpu16(x) le16_to_cpu(x)
/* ISO 9660 section 7.2.2 = 16 bit big endian */
#define cpu16_to_iso722(x) cpu_to_be16(x)
#define iso722_to_cpu16(x) be16_to_cpu(x)
/* ISO 9660 section 7.2.3 = Both endians! */
#define cpu16_to_iso723(x) ((uint32_t)(cpu_to_be16(x) | (cpu_to_le16(x) << 16)))
#define iso723_to_cpu16(x) be16_to_cpu((uint16_t)((x) & 0xffff))
/* ISO 9660 section 7.3.1 = 32 bit little endian */
#define cpu32_to_iso731(x) cpu_to_le32(x)
#define iso731_to_cpu32(x) le32_to_cpu(x)
/* ISO 9660 section 7.3.2 = 32 bit big endian */
#define cpu32_to_iso732(x) cpu_to_be32(x)
#define iso732_to_cpu32(x) be32_to_cpu(x)
/* ISO9660 section 7.3.3 = 32-bit both endians! */
#define cpu32_to_iso733(x) ((uint64_t)(cpu_to_be32(x) | ( ((uint64_t)cpu_to_le32(x)) << 32)))
#define iso733_to_cpu32(x) be32_to_cpu((uint32_t)((x) & 0xffffffff))
#if 0
static void test_iso_functions(void)
{
char input[] = "\x01\x23\x45\x67\x89\xab\xcd\xef";
uint16_t input16;
uint32_t input32;
uint64_t input64;
uint16_t output16;
uint32_t output32;
uint64_t output64;
memcpy(&input16, input, sizeof(input16));
output16 = cpu16_to_iso721(input16);
fprintf(stdout, "cpu16_to_iso721(0x%04x) = 0x%04x\n", input16, output16);
input16 = output16;
output16 = iso721_to_cpu16(input16);
fprintf(stdout, "iso721_to_cpu16(0x%04x) = 0x%04x\n", input16, output16);
memcpy(&input16, input, sizeof(input16));
output16 = cpu16_to_iso722(input16);
fprintf(stdout, "cpu16_to_iso722(0x%04x) = 0x%04x\n", input16, output16);
input16 = output16;
output16 = iso722_to_cpu16(input16);
fprintf(stdout, "iso722_to_cpu16(0x%04x) = 0x%04x\n", input16, output16);
memcpy(&input16, input, sizeof(input16));
output32 = cpu16_to_iso723(input16);
fprintf(stdout, "cpu16_to_iso723(0x%04x) = 0x%08x\n", input16, output32);
input32 = output32;
output16 = iso723_to_cpu16(input32);
fprintf(stdout, "iso723_to_cpu16(0x%08x) = 0x%04x\n", input32, output16);
memcpy(&input32, input, sizeof(input32));
output32 = cpu32_to_iso731(input32);
fprintf(stdout, "cpu32_to_iso731(0x%08x) = 0x%08x\n", input32, output32);
input32 = output32;
output32 = iso731_to_cpu32(input32);
fprintf(stdout, "iso731_to_cpu32(0x%08x) = 0x%08x\n", input32, output32);
memcpy(&input32, input, sizeof(input32));
output32 = cpu32_to_iso732(input32);
fprintf(stdout, "cpu32_to_iso732(0x%08x) = 0x%08x\n", input32, output32);
input32 = output32;
output32 = iso732_to_cpu32(input32);
fprintf(stdout, "iso732_to_cpu32(0x%08x) = 0x%08x\n", input32, output32);
memcpy(&input32, input, sizeof(input32));
output64 = cpu32_to_iso733(input32);
fprintf(stdout, "cpu32_to_iso733(0x%04x) = 0x%0" PRIx64 "\n", input32, output64);
input64 = output64;
output32 = iso733_to_cpu32(input64);
fprintf(stdout, "iso733_to_cpu32(0x%0" PRIx64") = 0x%04x\n", input64, output32);
exit(0);
}
#endif
#endif /* ISO9660_H */
/* vim:set shiftwidth=8 softtabstop=8: */