mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-10 14:23:31 +01:00
841 lines
19 KiB
C
841 lines
19 KiB
C
/*
|
|
* boot1-install.c
|
|
* boot1-install
|
|
*
|
|
* Created by Zenith432 on November 19th, 2014.
|
|
* Copyright (c) 2014 Zenith432. All rights reserved.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/uio.h>
|
|
#include <unistd.h>
|
|
|
|
#include <CoreFoundation/CoreFoundation.h>
|
|
#include <DiskArbitration/DiskArbitration.h>
|
|
|
|
struct buffer_t
|
|
{
|
|
unsigned char* _b;
|
|
size_t _s;
|
|
};
|
|
|
|
enum volume_kind_t
|
|
{
|
|
_undetected = 0,
|
|
_exfat = 1,
|
|
_hfs = 2,
|
|
_msdos = 3,
|
|
_ntfs = 4,
|
|
_ext4 = 5,
|
|
_other = 255
|
|
};
|
|
|
|
static int isVolumeMounted = 0;
|
|
static int isMediaWhole = 0;
|
|
static int isMediaLeaf = 0;
|
|
static enum volume_kind_t daVolumeKind = _undetected;
|
|
|
|
static struct buffer_t bpbBlob = { NULL, 0 };
|
|
static struct buffer_t bootBlob = { NULL, 0 };
|
|
static struct buffer_t outputBlob = { NULL, 0 };
|
|
|
|
static char const UnsupportedMessage[] = "Only exFAT, FAT32 or HFS+ volumes are supported\n";
|
|
static char const exfatID[] = "EXFAT ";
|
|
static char const fat32ID[] = "FAT32 ";
|
|
static char const devrdisk[] = "/dev/rdisk";
|
|
static char const devdisk[] = "/dev/disk";
|
|
static char const defaultBootFile_exfat[] = "./boot1x";
|
|
static char const defaultBootFile_hfs[] = "./boot1h";
|
|
static char const defaultBootFile_fat32[] = "./boot1f32";
|
|
|
|
static __used char const copyright[] = "Copyright 2014 Zenith432";
|
|
|
|
static int checkExfat(struct buffer_t const*);
|
|
static int checkFat32(struct buffer_t const*);
|
|
static int loadChunk(char const*, off_t, off_t, struct buffer_t*);
|
|
static void unsupported(void);
|
|
|
|
#pragma mark -
|
|
#pragma mark Cleaners
|
|
#pragma mark -
|
|
|
|
static
|
|
void free_buffer(struct buffer_t* pBuffer)
|
|
{
|
|
assert(pBuffer);
|
|
if (pBuffer->_b) {
|
|
free(pBuffer->_b);
|
|
pBuffer->_b = NULL;
|
|
pBuffer->_s = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Uses statics
|
|
*/
|
|
static
|
|
void cleanup(void)
|
|
{
|
|
free_buffer(&outputBlob);
|
|
free_buffer(&bootBlob);
|
|
free_buffer(&bpbBlob);
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark ExFAT Processor
|
|
#pragma mark -
|
|
|
|
static
|
|
unsigned VBRChecksum(unsigned char const* octets, size_t NumberOfBytes)
|
|
{
|
|
unsigned Checksum = 0;
|
|
size_t Index;
|
|
for (Index = 0; Index != NumberOfBytes; ++Index)
|
|
{
|
|
if (Index == 106 || Index == 107 || Index == 112)
|
|
continue;
|
|
Checksum = ((Checksum << 31) | (Checksum >> 1)) + (unsigned) octets[Index];
|
|
}
|
|
return Checksum;
|
|
}
|
|
|
|
static
|
|
int calcSum(struct buffer_t const* pBootBlob,
|
|
struct buffer_t const* pBpbBlob,
|
|
struct buffer_t* pOutputBlob,
|
|
char const* pathName)
|
|
{
|
|
unsigned char *outBuffer, *p, *q;
|
|
size_t outSize, toCopy, leftOver;
|
|
unsigned Checksum;
|
|
|
|
assert(pBootBlob && pBpbBlob);
|
|
if (pBootBlob->_s > 9U * 512U) {
|
|
fprintf(stderr, "Boot Code must be at most 4608 bytes\n");
|
|
return -1;
|
|
}
|
|
if (pBpbBlob->_s < 113U) {
|
|
fprintf(stderr, "BPB must be at least 113 bytes\n");
|
|
return -1;
|
|
}
|
|
if (!checkExfat(pBpbBlob)) {
|
|
fprintf(stderr, "BPB does not contain proper exFAT signature\n");
|
|
return -1;
|
|
}
|
|
outSize = 12U * 512U;
|
|
outBuffer = malloc(outSize);
|
|
if (!outBuffer) {
|
|
fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
|
|
return -1;
|
|
}
|
|
memset(outBuffer, 0, outSize);
|
|
memcpy(outBuffer, pBootBlob->_b, pBootBlob->_s);
|
|
memcpy(&outBuffer[3], &pBpbBlob->_b[3], 8);
|
|
memset(&outBuffer[11], 0, 53);
|
|
toCopy = 120;
|
|
if (pBpbBlob->_s < toCopy)
|
|
toCopy = pBpbBlob->_s;
|
|
leftOver = 120 - toCopy;
|
|
memcpy(&outBuffer[64], &pBpbBlob->_b[64], toCopy - 64);
|
|
if (leftOver)
|
|
memset(&outBuffer[120 - leftOver], 0, leftOver);
|
|
for (toCopy = 0; toCopy != 9; ++toCopy) {
|
|
p = outBuffer + toCopy * 512U + 508U;
|
|
p[2] = 0x55U;
|
|
p[3] = 0xAAU;
|
|
if (toCopy) {
|
|
p[0] = 0U;
|
|
p[1] = 0U;
|
|
}
|
|
}
|
|
if (pathName) {
|
|
/*
|
|
* Copy OEM Parameters record
|
|
*/
|
|
struct buffer_t auxBlob = { NULL, 0 };
|
|
if (loadChunk(pathName, 9 * 512 , 512, &auxBlob) >= 0) {
|
|
memcpy(&outBuffer[9 * 512], &auxBlob._b[0], 512);
|
|
free_buffer(&auxBlob);
|
|
}
|
|
}
|
|
Checksum = VBRChecksum(outBuffer, 11U * 512U);
|
|
p = outBuffer + 11U * 512U;
|
|
q = p + 512U;
|
|
for (; p < q; p += 4) {
|
|
*(unsigned*) p = Checksum;
|
|
}
|
|
if (pOutputBlob) {
|
|
pOutputBlob->_b = outBuffer;
|
|
pOutputBlob->_s = outSize;
|
|
} else
|
|
free(outBuffer);
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark FAT32 Processor
|
|
#pragma mark -
|
|
|
|
static
|
|
int fat32Layout(struct buffer_t const* pBootBlob,
|
|
struct buffer_t const* pBpbBlob,
|
|
struct buffer_t* pOutputBlob)
|
|
{
|
|
unsigned char *outBuffer;
|
|
size_t outSize;
|
|
|
|
assert(pBootBlob && pBpbBlob);
|
|
if (pBootBlob->_s > 512U) {
|
|
fprintf(stderr, "Boot Code must be at most 512 bytes\n");
|
|
return -1;
|
|
}
|
|
if (pBpbBlob->_s < 90U) {
|
|
fprintf(stderr, "BPB must be at least 90 bytes\n");
|
|
return -1;
|
|
}
|
|
if (!checkFat32(pBpbBlob)) {
|
|
fprintf(stderr, "BPB does not contain proper FAT32 signature\n");
|
|
return -1;
|
|
}
|
|
outSize = 512U;
|
|
outBuffer = malloc(outSize);
|
|
if (!outBuffer) {
|
|
fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
|
|
return -1;
|
|
}
|
|
memset(outBuffer, 0, outSize);
|
|
memcpy(outBuffer, pBootBlob->_b, pBootBlob->_s);
|
|
memcpy(&outBuffer[3], &pBpbBlob->_b[3], 87);
|
|
outBuffer[510] = 0x55U;
|
|
outBuffer[511] = 0xAAU;
|
|
if (pOutputBlob) {
|
|
pOutputBlob->_b = outBuffer;
|
|
pOutputBlob->_s = outSize;
|
|
} else
|
|
free(outBuffer);
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark File Operations
|
|
#pragma mark -
|
|
|
|
static
|
|
void writeVBR(char const* pathName,
|
|
struct buffer_t const* pBuffer,
|
|
int numCopies,
|
|
size_t expectedSize,
|
|
char const* volumeType)
|
|
{
|
|
int fd, j;
|
|
|
|
assert(pathName && pBuffer && volumeType);
|
|
if (pBuffer->_s != expectedSize) {
|
|
fprintf(stderr, "Unexpected %s VBR size %lu (expected %lu)\n", volumeType, pBuffer->_s, expectedSize);
|
|
return;
|
|
}
|
|
fd = open(pathName, O_WRONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Unable to write boot record to %s, %s\n", pathName, strerror(errno));
|
|
}
|
|
for (j = 0; j != numCopies; ++j)
|
|
write(fd, pBuffer->_b, pBuffer->_s);
|
|
close(fd);
|
|
}
|
|
|
|
static
|
|
int loadChunk(char const* pathName, off_t startOffset, off_t bytesToRead, struct buffer_t* pBuffer)
|
|
{
|
|
int fd;
|
|
ssize_t rc;
|
|
unsigned char* p;
|
|
struct stat buf;
|
|
|
|
assert(pathName);
|
|
fd = open(pathName, O_RDONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Unable to open %s, %s\n", pathName, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (bytesToRead > 0)
|
|
buf.st_size = bytesToRead;
|
|
else if (fstat(fd, &buf) < 0) {
|
|
fprintf(stderr, "Unable to fstat %s, %s\n", pathName, strerror(errno));
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
if (startOffset > 0) {
|
|
off_t t = lseek(fd, startOffset, SEEK_SET);
|
|
if (t < 0) {
|
|
fprintf(stderr, "Unable to lseek %s, %s\n", pathName, strerror(errno));
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
if (t != startOffset) {
|
|
fprintf(stderr, "lseek %s returned wrong value %lld instead of %lld\n", pathName, t, startOffset);
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
if (bytesToRead <= 0)
|
|
buf.st_size -= t;
|
|
}
|
|
p = malloc((size_t) buf.st_size);
|
|
if (!p) {
|
|
fprintf(stderr, "%s: Memory allocation failed\n", __FUNCTION__);
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
rc = read(fd, p, (size_t) buf.st_size);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Unable to read from %s, %s\n", pathName, strerror(errno));
|
|
free(p);
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
close(fd);
|
|
if (rc != buf.st_size) {
|
|
fprintf(stderr, "Unable to read entire chunk from %s, read %ld/%lld\n", pathName, rc, buf.st_size);
|
|
free(p);
|
|
return -1;
|
|
}
|
|
if (pBuffer) {
|
|
pBuffer->_b = p;
|
|
pBuffer->_s = (size_t) rc;
|
|
} else
|
|
free(p);
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark DiskArbitration Helpers
|
|
#pragma mark -
|
|
|
|
static
|
|
char const* toBSDName(char const* pathName)
|
|
{
|
|
assert(pathName);
|
|
return strncmp(pathName, &devrdisk[0], 10) ? pathName : &pathName[6];
|
|
}
|
|
|
|
static
|
|
char const* daReturnStr(DAReturn v)
|
|
{
|
|
if (unix_err(err_get_code(v)) == v)
|
|
return strerror(err_get_code(v));
|
|
switch (v) {
|
|
case kDAReturnError:
|
|
return "Error";
|
|
case kDAReturnBusy:
|
|
return "Busy";
|
|
case kDAReturnBadArgument:
|
|
return "Bad Argument";
|
|
case kDAReturnExclusiveAccess:
|
|
return "Exclusive Access";
|
|
case kDAReturnNoResources:
|
|
return "No Resources";
|
|
case kDAReturnNotFound:
|
|
return "Not Found";
|
|
case kDAReturnNotMounted:
|
|
return "Not Mounted";
|
|
case kDAReturnNotPermitted:
|
|
return "Not Permitted";
|
|
case kDAReturnNotPrivileged:
|
|
return "Not Privileged";
|
|
case kDAReturnNotReady:
|
|
return "Not Ready";
|
|
case kDAReturnNotWritable:
|
|
return "Not Writable";
|
|
case kDAReturnUnsupported:
|
|
return "Unsupported";
|
|
default:
|
|
return "Unknown";
|
|
}
|
|
}
|
|
|
|
static
|
|
int getDASessionAndDisk(char const* pathName, DASessionRef* pSession, DADiskRef* pDisk)
|
|
{
|
|
DASessionRef session;
|
|
DADiskRef disk;
|
|
|
|
assert(pathName);
|
|
session = DASessionCreate(kCFAllocatorDefault);
|
|
if (!session) {
|
|
fprintf(stderr, "DASessionCreate returned NULL\n");
|
|
return -1;
|
|
}
|
|
disk = DADiskCreateFromBSDName(kCFAllocatorDefault, session, toBSDName(pathName));
|
|
if (!disk) {
|
|
CFRelease(session);
|
|
fprintf(stderr, "DADiskCreateFromBSDName(%s) returned NULL\n", pathName);
|
|
return -1;
|
|
}
|
|
if (pDisk)
|
|
*pDisk = disk;
|
|
else
|
|
CFRelease(disk);
|
|
if (pSession)
|
|
*pSession = session;
|
|
else
|
|
CFRelease(session);
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Mount/UMount
|
|
#pragma mark -
|
|
|
|
static
|
|
void umountCallback(DADiskRef disk __unused,
|
|
DADissenterRef dissenter,
|
|
void *context)
|
|
{
|
|
if (context && dissenter != NULL) {
|
|
*(int*) context = -1;
|
|
fprintf(stderr, "umount unsuccessful, status %s\n", daReturnStr(DADissenterGetStatus(dissenter)));
|
|
}
|
|
CFRunLoopStop(CFRunLoopGetCurrent());
|
|
}
|
|
|
|
static
|
|
int umount(char const* pathName)
|
|
{
|
|
DASessionRef session;
|
|
DADiskRef disk;
|
|
int rc;
|
|
|
|
assert(pathName);
|
|
if (getDASessionAndDisk(pathName, &session, &disk) < 0)
|
|
return -1;
|
|
rc = 0;
|
|
DASessionScheduleWithRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
|
|
DADiskUnmount(disk, kDADiskUnmountOptionDefault, umountCallback, &rc);
|
|
CFRunLoopRun();
|
|
DASessionUnscheduleFromRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
|
|
CFRelease(disk);
|
|
CFRelease(session);
|
|
return rc;
|
|
}
|
|
|
|
static
|
|
void mountCallback(DADiskRef disk __unused,
|
|
DADissenterRef dissenter,
|
|
void *context)
|
|
{
|
|
if (context && dissenter != NULL) {
|
|
*(int*) context = -1;
|
|
fprintf(stderr, "mount unsuccessful, status %s\n", daReturnStr(DADissenterGetStatus(dissenter)));
|
|
}
|
|
CFRunLoopStop(CFRunLoopGetCurrent());
|
|
}
|
|
|
|
static
|
|
int mount(char const* pathName)
|
|
{
|
|
DASessionRef session;
|
|
DADiskRef disk;
|
|
int rc;
|
|
|
|
assert(pathName);
|
|
if (getDASessionAndDisk(pathName, &session, &disk) < 0)
|
|
return -1;
|
|
rc = 0;
|
|
DASessionScheduleWithRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
|
|
DADiskMount(disk, NULL, kDADiskMountOptionDefault, mountCallback, &rc);
|
|
CFRunLoopRun();
|
|
DASessionUnscheduleFromRunLoop(session, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
|
|
CFRelease(disk);
|
|
CFRelease(session);
|
|
return rc;
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Analyze Volume
|
|
#pragma mark -
|
|
|
|
static
|
|
int checkExfat(struct buffer_t const* pBpbBlob)
|
|
{
|
|
assert(pBpbBlob);
|
|
return !memcmp(&pBpbBlob->_b[3], &exfatID[0], 8);
|
|
}
|
|
|
|
static
|
|
int checkHFS(struct buffer_t const* pBpbBlob)
|
|
{
|
|
uint16_t sig;
|
|
|
|
assert(pBpbBlob);
|
|
sig = OSSwapBigToHostInt16(*(uint16_t const*)&pBpbBlob->_b[0]);
|
|
return sig == 0x4244 || sig == 0x482B || sig == 0x4858; /* 'BD', 'H+', 'HX' */
|
|
}
|
|
|
|
static
|
|
int checkFat32(struct buffer_t const* pBpbBlob)
|
|
{
|
|
uint16_t bytesPerSector, rootEntCnt;
|
|
uint8_t sectorsPerCluster;
|
|
|
|
assert(pBpbBlob);
|
|
bytesPerSector = OSSwapLittleToHostInt16(*(uint16_t const*)&pBpbBlob->_b[11]);
|
|
if ((bytesPerSector & (bytesPerSector - 1U)) ||
|
|
bytesPerSector < 0x200U ||
|
|
bytesPerSector > 0x1000U)
|
|
return 0;
|
|
sectorsPerCluster = pBpbBlob->_b[13];
|
|
if (!sectorsPerCluster ||
|
|
(sectorsPerCluster & (sectorsPerCluster - 1U)))
|
|
return 0;
|
|
rootEntCnt = OSSwapLittleToHostInt16(*(uint16_t const*)&pBpbBlob->_b[17]);
|
|
if (rootEntCnt)
|
|
return 0;
|
|
return !memcmp(&pBpbBlob->_b[82], &fat32ID[0], 8);
|
|
}
|
|
|
|
static
|
|
int checkSupportedVolume(enum volume_kind_t* pKind, struct buffer_t const* pBpbBlob, char const* pathName)
|
|
{
|
|
int rc;
|
|
|
|
assert(pKind && pBpbBlob);
|
|
rc = -1;
|
|
switch (*pKind) {
|
|
case _undetected:
|
|
if (checkExfat(pBpbBlob)) {
|
|
*pKind = _exfat;
|
|
rc = 0;
|
|
} else if (checkFat32(pBpbBlob)) {
|
|
*pKind = _msdos;
|
|
rc = 0;
|
|
} else if (pathName) {
|
|
struct buffer_t auxBlob = { NULL, 0 };
|
|
if (loadChunk(pathName, 1024 , 512, &auxBlob) >= 0) {
|
|
if (checkHFS(&auxBlob)) {
|
|
*pKind = _hfs;
|
|
rc = 0;
|
|
}
|
|
free_buffer(&auxBlob);
|
|
}
|
|
}
|
|
break;
|
|
case _exfat:
|
|
if (checkExfat(pBpbBlob))
|
|
rc = 0;
|
|
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;
|
|
}
|