mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-24 11:45:27 +01:00
841 lines
19 KiB
C
841 lines
19 KiB
C
/*
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* boot1-install.c
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* boot1-install
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*
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* Created by Zenith432 on November 19th, 2014.
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* Copyright (c) 2014 Zenith432. All rights reserved.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <DiskArbitration/DiskArbitration.h>
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struct buffer_t
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{
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unsigned char* _b;
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size_t _s;
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};
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enum volume_kind_t
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{
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_undetected = 0,
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_exfat = 1,
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_hfs = 2,
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_msdos = 3,
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_ntfs = 4,
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_ext4 = 5,
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_other = 255
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};
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static int isVolumeMounted = 0;
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static int isMediaWhole = 0;
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static int isMediaLeaf = 0;
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static enum volume_kind_t daVolumeKind = _undetected;
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static struct buffer_t bpbBlob = { NULL, 0 };
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static struct buffer_t bootBlob = { NULL, 0 };
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static struct buffer_t outputBlob = { NULL, 0 };
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static char const UnsupportedMessage[] = "Only exFAT, FAT32 or HFS+ volumes are supported\n";
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static char const exfatID[] = "EXFAT ";
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static char const fat32ID[] = "FAT32 ";
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static char const devrdisk[] = "/dev/rdisk";
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static char const devdisk[] = "/dev/disk";
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static char const defaultBootFile_exfat[] = "./boot1x";
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static char const defaultBootFile_hfs[] = "./boot1h";
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static char const defaultBootFile_fat32[] = "./boot1f32";
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static __used char const copyright[] = "Copyright 2014 Zenith432";
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static int checkExfat(struct buffer_t const*);
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static int checkFat32(struct buffer_t const*);
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static int loadChunk(char const*, off_t, off_t, struct buffer_t*);
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static void unsupported(void);
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#pragma mark -
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#pragma mark Cleaners
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#pragma mark -
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static
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void free_buffer(struct buffer_t* pBuffer)
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{
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assert(pBuffer);
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if (pBuffer->_b) {
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free(pBuffer->_b);
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pBuffer->_b = NULL;
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pBuffer->_s = 0;
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}
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}
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/*
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* Uses statics
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*/
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static
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void cleanup(void)
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{
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free_buffer(&outputBlob);
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free_buffer(&bootBlob);
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free_buffer(&bpbBlob);
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}
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#pragma mark -
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#pragma mark ExFAT Processor
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#pragma mark -
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static
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unsigned VBRChecksum(unsigned char const* octets, size_t NumberOfBytes)
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{
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unsigned Checksum = 0;
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size_t Index;
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for (Index = 0; Index != NumberOfBytes; ++Index)
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{
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if (Index == 106 || Index == 107 || Index == 112)
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continue;
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Checksum = ((Checksum << 31) | (Checksum >> 1)) + (unsigned) octets[Index];
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}
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return Checksum;
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}
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static
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int calcSum(struct buffer_t const* pBootBlob,
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struct buffer_t const* pBpbBlob,
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struct buffer_t* pOutputBlob,
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char const* pathName)
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{
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unsigned char *outBuffer, *p, *q;
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size_t outSize, toCopy, leftOver;
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unsigned Checksum;
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assert(pBootBlob && pBpbBlob);
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if (pBootBlob->_s > 9U * 512U) {
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fprintf(stderr, "Boot Code must be at most 4608 bytes\n");
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return -1;
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}
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if (pBpbBlob->_s < 113U) {
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fprintf(stderr, "BPB must be at least 113 bytes\n");
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return -1;
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}
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if (!checkExfat(pBpbBlob)) {
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fprintf(stderr, "BPB does not contain proper exFAT signature\n");
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return -1;
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}
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outSize = 12U * 512U;
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outBuffer = malloc(outSize);
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if (!outBuffer) {
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fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
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return -1;
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}
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memset(outBuffer, 0, outSize);
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memcpy(outBuffer, pBootBlob->_b, pBootBlob->_s);
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memcpy(&outBuffer[3], &pBpbBlob->_b[3], 8);
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memset(&outBuffer[11], 0, 53);
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toCopy = 120;
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if (pBpbBlob->_s < toCopy)
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toCopy = pBpbBlob->_s;
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leftOver = 120 - toCopy;
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memcpy(&outBuffer[64], &pBpbBlob->_b[64], toCopy - 64);
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if (leftOver)
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memset(&outBuffer[120 - leftOver], 0, leftOver);
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for (toCopy = 0; toCopy != 9; ++toCopy) {
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p = outBuffer + toCopy * 512U + 508U;
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p[2] = 0x55U;
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p[3] = 0xAAU;
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if (toCopy) {
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p[0] = 0U;
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p[1] = 0U;
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}
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}
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if (pathName) {
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/*
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* Copy OEM Parameters record
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*/
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struct buffer_t auxBlob = { NULL, 0 };
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if (loadChunk(pathName, 9 * 512 , 512, &auxBlob) >= 0) {
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memcpy(&outBuffer[9 * 512], &auxBlob._b[0], 512);
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free_buffer(&auxBlob);
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}
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}
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Checksum = VBRChecksum(outBuffer, 11U * 512U);
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p = outBuffer + 11U * 512U;
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q = p + 512U;
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for (; p < q; p += 4) {
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*(unsigned*) p = Checksum;
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}
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if (pOutputBlob) {
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pOutputBlob->_b = outBuffer;
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pOutputBlob->_s = outSize;
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} else
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free(outBuffer);
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return 0;
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}
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#pragma mark -
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#pragma mark FAT32 Processor
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#pragma mark -
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static
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int fat32Layout(struct buffer_t const* pBootBlob,
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struct buffer_t const* pBpbBlob,
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struct buffer_t* pOutputBlob)
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{
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unsigned char *outBuffer;
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size_t outSize;
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assert(pBootBlob && pBpbBlob);
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if (pBootBlob->_s > 512U) {
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fprintf(stderr, "Boot Code must be at most 512 bytes\n");
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return -1;
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}
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if (pBpbBlob->_s < 90U) {
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fprintf(stderr, "BPB must be at least 90 bytes\n");
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return -1;
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}
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if (!checkFat32(pBpbBlob)) {
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fprintf(stderr, "BPB does not contain proper FAT32 signature\n");
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return -1;
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}
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outSize = 512U;
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outBuffer = malloc(outSize);
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if (!outBuffer) {
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fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
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return -1;
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}
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memset(outBuffer, 0, outSize);
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memcpy(outBuffer, pBootBlob->_b, pBootBlob->_s);
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memcpy(&outBuffer[3], &pBpbBlob->_b[3], 87);
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outBuffer[510] = 0x55U;
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outBuffer[511] = 0xAAU;
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if (pOutputBlob) {
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pOutputBlob->_b = outBuffer;
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pOutputBlob->_s = outSize;
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} else
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free(outBuffer);
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return 0;
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}
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#pragma mark -
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#pragma mark File Operations
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#pragma mark -
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static
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void writeVBR(char const* pathName,
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struct buffer_t const* pBuffer,
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int numCopies,
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size_t expectedSize,
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char const* volumeType)
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{
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int fd, j;
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assert(pathName && pBuffer && volumeType);
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if (pBuffer->_s != expectedSize) {
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fprintf(stderr, "Unexpected %s VBR size %lu (expected %lu)\n", volumeType, pBuffer->_s, expectedSize);
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return;
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}
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fd = open(pathName, O_WRONLY);
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if (fd < 0) {
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fprintf(stderr, "Unable to write boot record to %s, %s\n", pathName, strerror(errno));
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}
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for (j = 0; j != numCopies; ++j)
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write(fd, pBuffer->_b, pBuffer->_s);
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close(fd);
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}
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static
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int loadChunk(char const* pathName, off_t startOffset, off_t bytesToRead, struct buffer_t* pBuffer)
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{
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int fd;
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ssize_t rc;
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unsigned char* p;
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struct stat buf;
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assert(pathName);
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fd = open(pathName, O_RDONLY);
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if (fd < 0) {
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fprintf(stderr, "Unable to open %s, %s\n", pathName, strerror(errno));
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return -1;
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}
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if (bytesToRead > 0)
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buf.st_size = bytesToRead;
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else if (fstat(fd, &buf) < 0) {
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fprintf(stderr, "Unable to fstat %s, %s\n", pathName, strerror(errno));
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close(fd);
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return -1;
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}
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if (startOffset > 0) {
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off_t t = lseek(fd, startOffset, SEEK_SET);
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if (t < 0) {
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fprintf(stderr, "Unable to lseek %s, %s\n", pathName, strerror(errno));
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close(fd);
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return -1;
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}
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if (t != startOffset) {
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fprintf(stderr, "lseek %s returned wrong value %lld instead of %lld\n", pathName, t, startOffset);
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close(fd);
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return -1;
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}
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if (bytesToRead <= 0)
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buf.st_size -= t;
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}
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p = malloc((size_t) buf.st_size);
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if (!p) {
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fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
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close(fd);
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return -1;
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}
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rc = read(fd, p, (size_t) buf.st_size);
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if (rc < 0) {
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fprintf(stderr, "Unable to read from %s, %s\n", pathName, strerror(errno));
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free(p);
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close(fd);
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return -1;
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}
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close(fd);
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if (rc != buf.st_size) {
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fprintf(stderr, "Unable to read entire chunk from %s, read %ld/%lld\n", pathName, rc, buf.st_size);
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free(p);
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return -1;
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}
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if (pBuffer) {
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pBuffer->_b = p;
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pBuffer->_s = (size_t) rc;
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} else
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free(p);
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return 0;
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}
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#pragma mark -
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#pragma mark DiskArbitration Helpers
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#pragma mark -
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static
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char const* toBSDName(char const* pathName)
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{
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assert(pathName);
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return strncmp(pathName, &devrdisk[0], 10) ? pathName : &pathName[6];
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}
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static
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char const* daReturnStr(DAReturn v)
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{
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if (unix_err(err_get_code(v)) == v)
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return strerror(err_get_code(v));
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switch (v) {
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case kDAReturnError:
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return "Error";
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case kDAReturnBusy:
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return "Busy";
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case kDAReturnBadArgument:
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return "Bad Argument";
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case kDAReturnExclusiveAccess:
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return "Exclusive Access";
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case kDAReturnNoResources:
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return "No Resources";
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case kDAReturnNotFound:
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return "Not Found";
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case kDAReturnNotMounted:
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return "Not Mounted";
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case kDAReturnNotPermitted:
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return "Not Permitted";
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case kDAReturnNotPrivileged:
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return "Not Privileged";
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case kDAReturnNotReady:
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return "Not Ready";
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case kDAReturnNotWritable:
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return "Not Writable";
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case kDAReturnUnsupported:
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return "Unsupported";
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default:
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return "Unknown";
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}
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}
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static
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int getDASessionAndDisk(char const* pathName, DASessionRef* pSession, DADiskRef* pDisk)
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{
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DASessionRef session;
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DADiskRef disk;
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assert(pathName);
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session = DASessionCreate(kCFAllocatorDefault);
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if (!session) {
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fprintf(stderr, "DASessionCreate returned NULL\n");
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return -1;
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}
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disk = DADiskCreateFromBSDName(kCFAllocatorDefault, session, toBSDName(pathName));
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if (!disk) {
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CFRelease(session);
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fprintf(stderr, "DADiskCreateFromBSDName(%s) returned NULL\n", pathName);
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return -1;
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}
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if (pDisk)
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*pDisk = disk;
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else
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CFRelease(disk);
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if (pSession)
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*pSession = session;
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else
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CFRelease(session);
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return 0;
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}
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#pragma mark -
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#pragma mark Mount/UMount
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#pragma mark -
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static
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void umountCallback(DADiskRef disk __unused,
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DADissenterRef dissenter,
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void *context)
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{
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if (context && dissenter != NULL) {
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*(int*) context = -1;
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fprintf(stderr, "umount unsuccessful, status %s\n", daReturnStr(DADissenterGetStatus(dissenter)));
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}
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CFRunLoopStop(CFRunLoopGetCurrent());
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}
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static
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int umount(char const* pathName)
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{
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DASessionRef session;
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DADiskRef disk;
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int rc;
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assert(pathName);
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if (getDASessionAndDisk(pathName, &session, &disk) < 0)
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return -1;
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rc = 0;
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DASessionScheduleWithRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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DADiskUnmount(disk, kDADiskUnmountOptionDefault, umountCallback, &rc);
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CFRunLoopRun();
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DASessionUnscheduleFromRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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CFRelease(disk);
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CFRelease(session);
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return rc;
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}
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static
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void mountCallback(DADiskRef disk __unused,
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DADissenterRef dissenter,
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void *context)
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{
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if (context && dissenter != NULL) {
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*(int*) context = -1;
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fprintf(stderr, "mount unsuccessful, status %s\n", daReturnStr(DADissenterGetStatus(dissenter)));
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}
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CFRunLoopStop(CFRunLoopGetCurrent());
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}
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static
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int mount(char const* pathName)
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{
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DASessionRef session;
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DADiskRef disk;
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int rc;
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assert(pathName);
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if (getDASessionAndDisk(pathName, &session, &disk) < 0)
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return -1;
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rc = 0;
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DASessionScheduleWithRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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DADiskMount(disk, NULL, kDADiskMountOptionDefault, mountCallback, &rc);
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CFRunLoopRun();
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DASessionUnscheduleFromRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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CFRelease(disk);
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CFRelease(session);
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return rc;
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}
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#pragma mark -
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#pragma mark Analyze Volume
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#pragma mark -
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static
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int checkExfat(struct buffer_t const* pBpbBlob)
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{
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assert(pBpbBlob);
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return !memcmp(&pBpbBlob->_b[3], &exfatID[0], 8);
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}
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static
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int checkHFS(struct buffer_t const* pBpbBlob)
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{
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uint16_t sig;
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assert(pBpbBlob);
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sig = OSSwapBigToHostInt16(*(uint16_t const*)&pBpbBlob->_b[0]);
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return sig == 0x4244 || sig == 0x482B || sig == 0x4858; /* 'BD', 'H+', 'HX' */
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}
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static
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int checkFat32(struct buffer_t const* pBpbBlob)
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{
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uint16_t bytesPerSector, rootEntCnt;
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uint8_t sectorsPerCluster;
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assert(pBpbBlob);
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bytesPerSector = OSSwapLittleToHostInt16(*(uint16_t const*)&pBpbBlob->_b[11]);
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if ((bytesPerSector & (bytesPerSector - 1U)) ||
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bytesPerSector < 0x200U ||
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bytesPerSector > 0x1000U)
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return 0;
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sectorsPerCluster = pBpbBlob->_b[13];
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if (!sectorsPerCluster ||
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(sectorsPerCluster & (sectorsPerCluster - 1U)))
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return 0;
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rootEntCnt = OSSwapLittleToHostInt16(*(uint16_t const*)&pBpbBlob->_b[17]);
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if (rootEntCnt)
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return 0;
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return !memcmp(&pBpbBlob->_b[82], &fat32ID[0], 8);
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}
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static
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int checkSupportedVolume(enum volume_kind_t* pKind, struct buffer_t const* pBpbBlob, char const* pathName)
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{
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int rc;
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assert(pKind && pBpbBlob);
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rc = -1;
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switch (*pKind) {
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case _undetected:
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if (checkExfat(pBpbBlob)) {
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*pKind = _exfat;
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rc = 0;
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} else if (checkFat32(pBpbBlob)) {
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*pKind = _msdos;
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rc = 0;
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} else if (pathName) {
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struct buffer_t auxBlob = { NULL, 0 };
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if (loadChunk(pathName, 1024 , 512, &auxBlob) >= 0) {
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if (checkHFS(&auxBlob)) {
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*pKind = _hfs;
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rc = 0;
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}
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free_buffer(&auxBlob);
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}
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}
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break;
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case _exfat:
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if (checkExfat(pBpbBlob))
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rc = 0;
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else
|
|
*pKind = _other;
|
|
break;
|
|
case _hfs:
|
|
if (checkHFS(pBpbBlob))
|
|
rc = 0;
|
|
else
|
|
*pKind = _other;
|
|
break;
|
|
case _msdos:
|
|
if (checkFat32(pBpbBlob))
|
|
rc = 0;
|
|
else
|
|
*pKind = _other;
|
|
break;
|
|
case _ntfs:
|
|
rc = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (rc < 0)
|
|
unsupported();
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Uses statics
|
|
*/
|
|
static
|
|
int checkDevicePath2(char const* pathName)
|
|
{
|
|
DASessionRef session;
|
|
DADiskRef disk;
|
|
CFDictionaryRef descDict;
|
|
CFStringRef s_ref;
|
|
CFBooleanRef b_ref;
|
|
|
|
assert(pathName);
|
|
if (getDASessionAndDisk(pathName, &session, &disk) < 0)
|
|
return -1;
|
|
descDict = DADiskCopyDescription(disk);
|
|
if (!descDict) {
|
|
CFRelease(disk);
|
|
CFRelease(session);
|
|
fprintf(stderr, "DADiskCopyDescription(%s) returned NULL\n", pathName);
|
|
return -1;
|
|
}
|
|
if (CFDictionaryGetValueIfPresent(descDict, kDADiskDescriptionMediaWholeKey, (void const**) &b_ref) &&
|
|
CFBooleanGetValue(b_ref))
|
|
isMediaWhole = 1;
|
|
if (CFDictionaryGetValueIfPresent(descDict, kDADiskDescriptionMediaLeafKey, (void const**) &b_ref) &&
|
|
CFBooleanGetValue(b_ref))
|
|
isMediaLeaf = 1;
|
|
if (CFDictionaryContainsKey(descDict, kDADiskDescriptionVolumePathKey))
|
|
isVolumeMounted = 1;
|
|
if (CFDictionaryGetValueIfPresent(descDict, kDADiskDescriptionVolumeKindKey, (void const**) &s_ref)) {
|
|
static char cstr_buffer[64];
|
|
char const* cstr = CFStringGetCStringPtr(s_ref, kCFStringEncodingUTF8);
|
|
if (!cstr) {
|
|
CFStringGetCString(s_ref, &cstr_buffer[0], (CFIndex) sizeof cstr_buffer, kCFStringEncodingUTF8);
|
|
cstr = &cstr_buffer[0];
|
|
}
|
|
#if 0
|
|
printf("DAVolumeKind %s\n", cstr);
|
|
#endif
|
|
if (!strcmp(cstr, "exfat"))
|
|
daVolumeKind = _exfat;
|
|
else if (!strcmp(cstr, "hfs"))
|
|
daVolumeKind = _hfs;
|
|
else if (!strcmp(cstr, "msdos"))
|
|
daVolumeKind = _msdos;
|
|
else if (!strcmp(cstr, "ntfs"))
|
|
daVolumeKind = _ntfs;
|
|
else
|
|
daVolumeKind = _other;
|
|
}
|
|
#if 0
|
|
printf(stderr, "whole %c, leaf %c, mounted %c\n",
|
|
isMediaWhole ? 'Y' : 'N',
|
|
isMediaLeaf ? 'Y' : 'N',
|
|
isVolumeMounted ? 'Y' : 'N');
|
|
#endif
|
|
#if 0
|
|
CFShow(descDict);
|
|
#endif
|
|
CFRelease(descDict);
|
|
CFRelease(disk);
|
|
CFRelease(session);
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
int checkDevicePath(char const* pathName)
|
|
{
|
|
struct stat buf;
|
|
|
|
assert(pathName);
|
|
if (strncmp(pathName, &devdisk[0], 9) != 0 &&
|
|
strncmp(pathName, &devrdisk[0], 10) != 0) {
|
|
fprintf(stderr, "disk must be of form /dev/rdiskUsS or /dev/diskUsS\n");
|
|
return -1;
|
|
}
|
|
if (stat(pathName, &buf) < 0) {
|
|
fprintf(stderr, "stat on %s failed, %s\n", pathName, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (!(buf.st_mode & (S_IFCHR | S_IFBLK))) {
|
|
fprintf(stderr, "%s is not a block or character special device\n", pathName);
|
|
return -1;
|
|
}
|
|
/*
|
|
* FIXME: milk information from st_rdev - what's in it?
|
|
*/
|
|
#if 0
|
|
printf("size of buf is %lu\n", sizeof buf);
|
|
printf("st_dev %#x\n", buf.st_dev);
|
|
printf("st_ino %llu\n", buf.st_ino);
|
|
printf("st_mode %#o\n", buf.st_mode);
|
|
printf("st_nlink %u\n", buf.st_nlink);
|
|
printf("st_uid %u\n", buf.st_uid);
|
|
printf("st_gid %u\n", buf.st_gid);
|
|
printf("st_rdev %#x\n", buf.st_rdev);
|
|
printf("st_size %llu\n", buf.st_size);
|
|
printf("st_blocks %llu\n", buf.st_blocks);
|
|
printf("st_blksize %u\n", buf.st_blksize);
|
|
printf("st_flags %#x\n", buf.st_flags);
|
|
printf("st_gen %u\n", buf.st_gen);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Usage
|
|
#pragma mark -
|
|
|
|
static
|
|
void usage(char const* self)
|
|
{
|
|
assert(self);
|
|
fprintf(stderr, "Usage: %s [-yM] [-f boot_code_file] disk\n", self);
|
|
fprintf(stderr, " boot_code_file is an optional boot template\n");
|
|
fprintf(stderr, " -y: don't ask any questions\n");
|
|
fprintf(stderr, " -M: keep volume mounted while proceeding (useful for root filesystem)\n");
|
|
fprintf(stderr, "disk is of the form /dev/rdiskUsS or /dev/diskUsS\n");
|
|
fprintf(stderr, "default boot files are\n");
|
|
fprintf(stderr, " boot1h for HFS+\n");
|
|
fprintf(stderr, " boot1f32 for FAT32\n");
|
|
fprintf(stderr, " boot1x for exFAT\n");
|
|
}
|
|
|
|
static
|
|
void unsupported(void)
|
|
{
|
|
fprintf(stderr, "%s", &UnsupportedMessage[0]);
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Main
|
|
#pragma mark -
|
|
|
|
int main(int argc, char* const argv[])
|
|
{
|
|
int ch;
|
|
char const* bootFile = NULL;
|
|
char const* devicePath = NULL;
|
|
int dontAsk = 0;
|
|
int keepMounted = 0;
|
|
|
|
while ((ch = getopt(argc, argv, "yMf:")) != -1)
|
|
switch (ch) {
|
|
case 'y':
|
|
dontAsk = 1;
|
|
break;
|
|
case 'M':
|
|
keepMounted = 1;
|
|
break;
|
|
case 'f':
|
|
bootFile = optarg;
|
|
break;
|
|
default:
|
|
goto usage_and_error;
|
|
}
|
|
if (optind + 1 > argc)
|
|
goto usage_and_error;
|
|
devicePath = argv[optind];
|
|
if (geteuid() != 0) {
|
|
fprintf(stderr, "This program must be run as root\n");
|
|
return -1;
|
|
}
|
|
#if 0
|
|
printf("bootFile %s, devicePath %s, dontAsk %d\n", bootFile, devicePath, dontAsk);
|
|
#endif
|
|
if (checkDevicePath(devicePath) < 0)
|
|
return -1;
|
|
if (checkDevicePath2(devicePath) >= 0) {
|
|
if (isMediaWhole && !isMediaLeaf) {
|
|
fprintf(stderr, "%s is a whole disk\n", devicePath);
|
|
return -1;
|
|
}
|
|
switch (daVolumeKind) {
|
|
case _undetected:
|
|
case _exfat:
|
|
case _hfs:
|
|
case _msdos:
|
|
case _ntfs:
|
|
break;
|
|
default:
|
|
unsupported();
|
|
return -1;
|
|
}
|
|
if (isVolumeMounted && keepMounted)
|
|
isVolumeMounted = 0;
|
|
if (isVolumeMounted && umount(devicePath) < 0) {
|
|
fprintf(stderr, "Unable to umount %s, please 'diskutil umount' manually before running this program\n", devicePath);
|
|
return -1;
|
|
}
|
|
}
|
|
/*
|
|
* Note:
|
|
* Reading a non-multiple of 512 does not work on /dev/rdisk
|
|
*/
|
|
if (loadChunk(devicePath, daVolumeKind == _hfs ? 1024 : 0, 512, &bpbBlob) < 0)
|
|
goto remount_and_error;
|
|
if (checkSupportedVolume(&daVolumeKind, &bpbBlob, devicePath) < 0)
|
|
goto cleanup_and_error;
|
|
if (!bootFile) {
|
|
switch (daVolumeKind) {
|
|
case _exfat:
|
|
bootFile = &defaultBootFile_exfat[0];
|
|
break;
|
|
case _hfs:
|
|
bootFile = &defaultBootFile_hfs[0];
|
|
break;
|
|
case _msdos:
|
|
bootFile = &defaultBootFile_fat32[0];
|
|
break;
|
|
default:
|
|
unsupported();
|
|
return -1;
|
|
}
|
|
printf("Using %s as default boot template\n", bootFile);
|
|
}
|
|
|
|
if (loadChunk(bootFile, 0, 0, &bootBlob) < 0)
|
|
goto cleanup_and_error;
|
|
|
|
switch (daVolumeKind) {
|
|
case _exfat:
|
|
if (calcSum(&bootBlob, &bpbBlob, &outputBlob, devicePath) < 0)
|
|
goto cleanup_and_error;
|
|
break;
|
|
case _hfs:
|
|
free_buffer(&bpbBlob);
|
|
if (bootBlob._s != 1024U) {
|
|
fprintf(stderr, "Boot Code size must be 1024 bytes\n");
|
|
goto cleanup_and_error;
|
|
}
|
|
break;
|
|
case _msdos:
|
|
if (fat32Layout(&bootBlob, &bpbBlob, &outputBlob) < 0)
|
|
goto cleanup_and_error;
|
|
break;
|
|
default:
|
|
assert(0);
|
|
break;
|
|
}
|
|
if (!dontAsk) {
|
|
printf("About to write new boot record on %s, Are You Sure (Y/N)?", devicePath);
|
|
ch = 0;
|
|
while (ch != 'Y' && ch != 'N')
|
|
ch = getchar();
|
|
if (ch != 'Y') {
|
|
printf("Aborted due to user request\n");
|
|
goto cleanup_and_exit;
|
|
}
|
|
}
|
|
switch (daVolumeKind) {
|
|
case _exfat:
|
|
writeVBR(devicePath, &outputBlob, 2, 12U * 512U, "exFAT");
|
|
break;
|
|
case _hfs:
|
|
writeVBR(devicePath, &bootBlob, 1, 1024U, "HFS+");
|
|
break;
|
|
case _msdos:
|
|
writeVBR(devicePath, &outputBlob, 1, 512U, "FAT32");
|
|
break;
|
|
default:
|
|
assert(0);
|
|
break;
|
|
}
|
|
|
|
cleanup_and_exit:
|
|
cleanup();
|
|
if (isVolumeMounted)
|
|
mount(devicePath);
|
|
return 0;
|
|
|
|
cleanup_and_error:
|
|
cleanup();
|
|
remount_and_error:
|
|
if (isVolumeMounted)
|
|
mount(devicePath);
|
|
return -1;
|
|
|
|
usage_and_error:
|
|
usage(argv[0]);
|
|
return -1;
|
|
}
|