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/*
* Copyright (c) 2019 Conrad Meyer <cem@FreeBSD.org>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "fstyp.h"
/*
* https://developer.apple.com/library/archive/technotes/tn/tn1150.html
*/
#define VOL_HDR_OFF 1024
typedef uint32_t hfsp_cat_nodeid;
typedef struct hfsp_ext_desc {
uint32_t ex_startBlock;
uint32_t ex_blockCount;
} hfsp_ext_desc;
typedef struct hfsp_fork_data {
uint64_t fd_logicalSz;
uint32_t fd_clumpSz;
uint32_t fd_totalBlocks;
hfsp_ext_desc fd_extents[8];
} hfsp_fork_data;
struct hfsp_vol_hdr {
char hp_signature[2];
uint16_t hp_version;
uint32_t hp_attributes;
uint32_t hp_lastMounted;
uint32_t hp_journalInfoBlock;
/* Creation / etc dates. */
uint32_t hp_create;
uint32_t hp_modify;
uint32_t hp_backup;
uint32_t hp_checked;
/* Stats */
uint32_t hp_files;
uint32_t hp_folders;
/* Parameters */
uint32_t hp_blockSize;
uint32_t hp_totalBlocks;
uint32_t hp_freeBlocks;
uint32_t hp_nextAlloc;
uint32_t hp_rsrcClumpSz;
uint32_t hp_dataClumpSz;
hfsp_cat_nodeid hp_nextCatID;
uint32_t hp_writeCount;
uint64_t hp_encodingsBM;
uint32_t hp_finderInfo[8];
hfsp_fork_data hp_allocationFile;
hfsp_fork_data hp_extentsFile;
hfsp_fork_data hp_catalogFile;
hfsp_fork_data hp_attributesFile;
hfsp_fork_data hp_startupFile;
};
_Static_assert(sizeof(struct hfsp_vol_hdr) == 512, "");
int
fstyp_hfsp(FILE *fp, char *label, size_t size)
{
struct hfsp_vol_hdr *hdr;
int retval;
retval = 1;
hdr = read_buf(fp, VOL_HDR_OFF, sizeof(*hdr));
if (hdr == NULL)
goto fail;
if ((strncmp(hdr->hp_signature, "H+", 2) != 0 || hdr->hp_version != 4)
&&
(strncmp(hdr->hp_signature, "HX", 2) != 0 || hdr->hp_version != 5))
goto fail;
/* This is an HFS+ volume. */
retval = 0;
/* No label support yet. */
(void)size;
(void)label;
fail:
free(hdr);
return (retval);
}
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