1 /* 2 * Copyright (c) 2019 Conrad Meyer <cem@FreeBSD.org>. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 __FBSDID("$FreeBSD$"); 28 29 #include <assert.h> 30 #include <err.h> 31 #include <errno.h> 32 #include <stdbool.h> 33 #include <stdint.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 38 #include "fstyp.h" 39 40 /* 41 * https://developer.apple.com/library/archive/technotes/tn/tn1150.html 42 */ 43 44 #define VOL_HDR_OFF 1024 45 46 typedef uint32_t hfsp_cat_nodeid; 47 48 typedef struct hfsp_ext_desc { 49 uint32_t ex_startBlock; 50 uint32_t ex_blockCount; 51 } hfsp_ext_desc; 52 53 typedef struct hfsp_fork_data { 54 uint64_t fd_logicalSz; 55 uint32_t fd_clumpSz; 56 uint32_t fd_totalBlocks; 57 hfsp_ext_desc fd_extents[8]; 58 } hfsp_fork_data; 59 60 struct hfsp_vol_hdr { 61 char hp_signature[2]; 62 uint16_t hp_version; 63 uint32_t hp_attributes; 64 uint32_t hp_lastMounted; 65 uint32_t hp_journalInfoBlock; 66 67 /* Creation / etc dates. */ 68 uint32_t hp_create; 69 uint32_t hp_modify; 70 uint32_t hp_backup; 71 uint32_t hp_checked; 72 73 /* Stats */ 74 uint32_t hp_files; 75 uint32_t hp_folders; 76 77 /* Parameters */ 78 uint32_t hp_blockSize; 79 uint32_t hp_totalBlocks; 80 uint32_t hp_freeBlocks; 81 82 uint32_t hp_nextAlloc; 83 uint32_t hp_rsrcClumpSz; 84 uint32_t hp_dataClumpSz; 85 86 hfsp_cat_nodeid hp_nextCatID; 87 88 uint32_t hp_writeCount; 89 uint64_t hp_encodingsBM; 90 91 uint32_t hp_finderInfo[8]; 92 93 hfsp_fork_data hp_allocationFile; 94 hfsp_fork_data hp_extentsFile; 95 hfsp_fork_data hp_catalogFile; 96 hfsp_fork_data hp_attributesFile; 97 hfsp_fork_data hp_startupFile; 98 }; 99 _Static_assert(sizeof(struct hfsp_vol_hdr) == 512, ""); 100 101 int 102 fstyp_hfsp(FILE *fp, char *label, size_t size, const char *devpath) 103 { 104 struct hfsp_vol_hdr *hdr; 105 int retval; 106 107 retval = 1; 108 hdr = read_buf(fp, VOL_HDR_OFF, sizeof(*hdr)); 109 if (hdr == NULL) 110 goto fail; 111 112 if ((strncmp(hdr->hp_signature, "H+", 2) != 0 || hdr->hp_version != 4) 113 && 114 (strncmp(hdr->hp_signature, "HX", 2) != 0 || hdr->hp_version != 5)) 115 goto fail; 116 117 /* This is an HFS+ volume. */ 118 retval = 0; 119 120 /* No label support yet. */ 121 122 fail: 123 free(hdr); 124 return (retval); 125 } 126