mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
617 lines
19 KiB
C
617 lines
19 KiB
C
/*
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* partutil.c
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* partutil
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*
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* Created by JrCs on December 28th, 2014.
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* Copyright (c) 2014-2015 JrCs. 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 <unistd.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <paths.h>
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#include <sys/param.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <getopt.h>
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#include <IOKit/IOKitLib.h>
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#include <IOKit/IOBSD.h>
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#include <IOKit/usb/IOUSBLib.h>
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#include <IOKit/storage/IOCDMedia.h>
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#include <IOKit/storage/IOMedia.h>
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#include <IOKit/storage/IOCDTypes.h>
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#include <IOKit/storage/IOMediaBSDClient.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <DiskArbitration/DiskArbitration.h>
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#include "partutil.h"
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static char const diskStr[] = "disk";
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static __used char const copyright[] = "Copyright 2014-2015 JrCs.";
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int verbosity = 0;
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typedef enum {
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search_uuid=300, // must be > 255
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search_undefined
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} searchType;
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typedef enum {
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query_fstype=search_undefined+1,
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query_bsdname,
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query_mountpoint,
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query_volumename,
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query_uuid,
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query_blocksize,
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query_partitionscheme,
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query_pbrtype,
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query_wholedisk,
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query_contenttype,
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query_dump,
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query_undefined
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} queryType;
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static char const fat16ID[] = "FAT16 ";
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static char const fat32ID[] = "FAT32 ";
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static char const exfatID[] = "EXFAT ";
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static char const fat16[] = "fat16";
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static char const fat32[] = "fat32";
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static char const msdos[] = "msdos";
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static char const hfs[] = "hfs";
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static char const exfat[] = "exfat";
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#pragma mark -
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#pragma mark DiskArbitration and PBR Helpers
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#pragma mark -
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static
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bool isUUID(const char* string) {
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if (strlen(string) == 36 &&
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string[8] == '-' && string[13] == '-' &&
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string[18] == '-' && string[23] == '-')
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return true;
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return false;
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}
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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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char const* bsdName = pathName;
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if (strncmp(pathName, _PATH_DEV, sizeof(_PATH_DEV)-1) == 0) {
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// Remove /dev/
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bsdName=&pathName[sizeof(_PATH_DEV)-1];
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}
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if (bsdName[0] == 'r') {
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// Remove the r (raw device)
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bsdName=&bsdName[1];
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}
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// the devicename must start by the string "disk"
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if (strncmp(bsdName, diskStr, sizeof(diskStr)-1) != 0) {
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fprintf(stderr,"Error: invalid device name '%s'\n", bsdName);
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exit(EXIT_FAILURE);
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}
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return bsdName;
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}
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static
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bool getPBRType(char const* pathName, char *answer, size_t answer_maxsize) {
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const unsigned int bytes_to_read = 4096;
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unsigned char buffer[bytes_to_read];
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char rawPathName[ MAXPATHLEN ];
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if (geteuid() != 0) {
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fprintf(stderr, "Error: this program must be run as root to get Filesystem Type on this platform !\n");
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return false;
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}
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assert(pathName);
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snprintf(rawPathName,MAXPATHLEN, "%sr%s", _PATH_DEV, toBSDName(pathName));
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int fd = open(rawPathName, O_RDONLY);
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if (fd < 0) {
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fprintf(stderr, "Error: unable to open %s: %s\n", rawPathName, strerror(errno));
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return false;
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}
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ssize_t rc = read(fd, (void *)buffer, bytes_to_read);
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close(fd);
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if (rc != bytes_to_read) {
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fprintf(stderr, "Error: unable to read from %s: %s\n", rawPathName, strerror(errno));
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return false;
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}
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uint16_t fat_bytesPerSector = OSSwapLittleToHostInt16(*(uint16_t const*)&buffer[0xb]);
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uint8_t fat_sectorsPerCluster = buffer[0xd];
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if (!(fat_bytesPerSector & (fat_bytesPerSector - 1U)) &&
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fat_bytesPerSector >= 0x200U && fat_bytesPerSector <= 0x1000U &&
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fat_sectorsPerCluster && !(fat_sectorsPerCluster & (fat_sectorsPerCluster - 1U)))
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{
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if (memcmp(&buffer[0x52], fat32ID, sizeof(fat32ID)-1) == 0) {
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strlcpy(answer, fat32, answer_maxsize);
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return true;
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}
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if (memcmp(&buffer[0x36], fat16ID, sizeof(fat16ID)-1) == 0) {
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strlcpy(answer, fat16, answer_maxsize);
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return true;
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}
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fprintf(stderr, "Error: unknown %s format\n", msdos);
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return false;
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}
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uint16_t hfs_sig = OSSwapBigToHostInt16(*(uint16_t const*)&buffer[1024]);
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if (hfs_sig == 0x4244 /*'BD'*/ ||
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hfs_sig == 0x482B /*'H+'*/ ||
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hfs_sig == 0x4858 /*'HX'*/) {
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strlcpy(answer, hfs, answer_maxsize);
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return true;
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}
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if (memcmp(&buffer[0x3], exfatID, sizeof(exfatID)) == 0) {
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strlcpy(answer, exfat, answer_maxsize);
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return true;
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}
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return false;
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}
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static
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bool getFSTypeFromPBR(char const* pathName, char *answer, size_t answer_maxsize) {
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bool isSuccess = getPBRType(pathName, answer, answer_maxsize);
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if (isSuccess &&
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(strncmp(answer, fat32, answer_maxsize) == 0 ||
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strncmp(answer, fat16, answer_maxsize) == 0))
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strlcpy(answer, msdos, answer_maxsize); // return msdos for fat32 or fat16
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return isSuccess;
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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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static
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bool queryDevice(char const* deviceName, queryType query, char *answer, size_t answer_maxsize)
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{
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struct stat buf;
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DADiskRef disk;
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CFDictionaryRef descDict;
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CFBooleanRef b_ref;
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bool result = false;
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int isMediaWhole = 0;
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assert(deviceName);
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char devFilePath[ MAXPATHLEN ];
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char *deviceFilePath = &devFilePath[0];
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strlcpy( deviceFilePath, _PATH_DEV, sizeof( devFilePath ) );
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strlcat( deviceFilePath, deviceName, sizeof( devFilePath ) );
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if (stat(deviceFilePath, &buf) < 0) {
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fprintf(stderr, "Error: stat failed on %s: %s\n", deviceFilePath, strerror(errno));
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return false;
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}
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if (!(buf.st_mode & (S_IFCHR | S_IFBLK))) {
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fprintf(stderr, "Error: %s is not a block or character special device\n", deviceFilePath);
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return false;
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}
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if (getDASessionAndDisk(deviceName, NULL, &disk) < 0)
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return false;
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descDict = DADiskCopyDescription(disk);
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CFRelease(disk);
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if (!descDict) {
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return false;
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}
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if (CFDictionaryGetValueIfPresent(descDict, kDADiskDescriptionMediaWholeKey, (void const**) &b_ref) &&
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CFBooleanGetValue(b_ref))
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isMediaWhole = 1;
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// If query partition scheme, the device must be a whole disk
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if (query == query_partitionscheme && !isMediaWhole) {
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fprintf(stderr, "Error: device must be a whole disk to query about partition scheme !\n");
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CFRelease(descDict);
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return false;
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}
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CFStringRef key = NULL;
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switch (query) {
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case query_fstype:
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key = kDADiskDescriptionVolumeKindKey;
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break;
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case query_bsdname:
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key = kDADiskDescriptionMediaBSDNameKey;
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break;
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case query_mountpoint:
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key = kDADiskDescriptionVolumePathKey;
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break;
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case query_volumename:
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key = kDADiskDescriptionVolumeNameKey;
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break;
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case query_uuid:
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key = kDADiskDescriptionMediaUUIDKey;
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break;
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case query_blocksize:
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key = kDADiskDescriptionMediaBlockSizeKey;
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break;
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case query_partitionscheme:
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key = kDADiskDescriptionMediaContentKey;
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break;
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case query_wholedisk:
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key = kDADiskDescriptionMediaBSDUnitKey;
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break;
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case query_contenttype:
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key = kDADiskDescriptionMediaContentKey;
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break;
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case query_dump:
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CFShow(descDict);
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CFRelease(descDict);
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return EXIT_SUCCESS;
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break;
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case query_pbrtype: // never used here
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case query_undefined:
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break;
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}
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if (!key) {
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CFRelease(descDict);
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return false;
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}
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CFTypeRef valueRef;
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if (CFDictionaryGetValueIfPresent(descDict, key, (void const**) &valueRef)) {
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// Get the OF variable's type.
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CFTypeID typeID = CFGetTypeID(valueRef);
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CFStringRef cfstr_value = NULL;
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if (typeID == CFStringGetTypeID())
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cfstr_value = CFStringCreateCopy(NULL, valueRef); // same string
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else if (typeID == CFUUIDGetTypeID())
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cfstr_value = CFUUIDCreateString(NULL, valueRef); // convert CFUUIDRef to CFStringRef
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else if (typeID == CFNumberGetTypeID())
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cfstr_value = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@"), valueRef); // convert CFNumber to CFStringRef
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else if (typeID == CFURLGetTypeID())
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cfstr_value = CFURLCopyFileSystemPath ( valueRef, kCFURLPOSIXPathStyle ); // convert CFURL to CFStringRef
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if (cfstr_value) {
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result = CFStringGetCString(cfstr_value, answer, answer_maxsize, kCFStringEncodingUTF8);
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CFRelease(cfstr_value);
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}
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}
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CFRelease(descDict);
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if (query == query_wholedisk && result == true) {
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// append the string "disk" after the BSD unit number
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char bsd_unit_number[answer_maxsize];
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strlcpy(bsd_unit_number, answer, sizeof(bsd_unit_number));
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snprintf(answer, answer_maxsize, "disk%s", bsd_unit_number);
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}
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if (result == false && query == query_fstype) {
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// Try to find the fstype by analysing the PBR of the partition
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return getFSTypeFromPBR(deviceName, answer, answer_maxsize);
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}
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return result;
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}
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#pragma mark -
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#pragma mark Search
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#pragma mark -
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static
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bool doSearch(searchType search, char const* searchValue, char *answer, size_t answer_maxsize)
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{
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mach_port_t masterPort;
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kern_return_t kernResult;
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CFMutableDictionaryRef classesToMatch;
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io_iterator_t mediaIterator;
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assert(searchValue);
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kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
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if ( kernResult != KERN_SUCCESS ) {
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fprintf(stderr, "IOMasterPort returned %d\n", kernResult );
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return false;
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}
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classesToMatch = IOServiceMatching( kIOMediaClass ); // All Storage Media
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if ( classesToMatch == NULL ) {
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fprintf( stderr, "IOServiceMatching returned a NULL dictionary.\n" );
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return false;
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}
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CFDictionarySetValue( classesToMatch,
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CFSTR( kIOMediaLeafKey ), kCFBooleanTrue ); // Is a leaf device
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CFStringRef searchCFString = CFStringCreateWithCString(NULL, searchValue, kCFStringEncodingASCII);
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switch (search) {
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case search_uuid:
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if ( ! isUUID(searchValue) ) {
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fprintf(stderr, "Error: invalid UUID value '%s'\n", searchValue);
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CFRelease(searchCFString);
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CFRelease(classesToMatch); // Not use so release it
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return false;
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}
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CFMutableStringRef tmpMutableStr = CFStringCreateMutableCopy(0, 36, searchCFString);
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CFStringUppercase(tmpMutableStr, 0); // Convert to Uppercase
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CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaUUIDKey ), tmpMutableStr);
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CFRelease(tmpMutableStr);
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break;
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case search_undefined:
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CFRelease(searchCFString);
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CFRelease(classesToMatch); // Not use so release it
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return false;
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break;
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}
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CFRelease(searchCFString);
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// classesToMatch is consume by IOServiceGetMatchingServices
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kernResult = IOServiceGetMatchingServices( masterPort,
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classesToMatch, &mediaIterator );
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if ( kernResult != KERN_SUCCESS ) {
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fprintf(stderr, "No Block Storage media found.\n kernResult = %d\n", kernResult );
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return false;
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}
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io_service_t service;
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CFMutableDictionaryRef serviceProperties = NULL;
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while ((service = IOIteratorNext( mediaIterator ))) {
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kernResult = IORegistryEntryCreateCFProperties(service, &serviceProperties, NULL, 0);
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if ( kernResult != KERN_SUCCESS ) {
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fprintf(stderr, "Error: IORegistryEntryCreateCFProperties returned %d\n", kernResult );
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IOObjectRelease( service );
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return false;
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}
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CFStringRef s_ref;
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// get the BSO device name
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if (CFDictionaryGetValueIfPresent(serviceProperties, CFSTR( kIOBSDNameKey ), (void const**) &s_ref)) {
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CFStringGetCString(s_ref, answer, answer_maxsize, kCFStringEncodingUTF8);
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CFRelease(serviceProperties);
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IOObjectRelease( service );
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return true;
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}
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CFRelease(serviceProperties);
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IOObjectRelease( service );
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}
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return false;
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}
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#pragma mark -
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#pragma mark Usage
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#pragma mark -
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//
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// display version string
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//
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void print_version(void) {
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printf ("%s " VERSION_S "\n%s\n", PROGNAME_S, copyright);
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}
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//
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// display usage
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//
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static void
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usage (int status)
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{
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if (status)
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fprintf (stderr, "Try ``" PROGNAME_S " --help'' for more information.\n");
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else {
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print_version();
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printf ("\n\
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Usage: " PROGNAME_S " [QUERY OPTION] [DEVICE|UUID]\n\
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" PROGNAME_S " [SEARCH OPTION]\n\
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\n\
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Query options:\n\
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\t--show-fstype display the filesytem type of the partition\n\
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\t--show-bsdname display the device name of the partition\n\
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\t--show-mountpoint display the mount point of the partition\n\
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\t--show-volumename display the volume name of the partition\n\
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\t--show-uuid display the UUID of the partition\n\
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\t--show-blocksize display the prefer blocksize of the partition\n\
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\t--show-partitionscheme display the partition scheme of a disk\n\
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\t--show-contenttype display the content type of the device\n\
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\t--show-pbrtype display the filesystem type from the PBR of the device\n\
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\t--show-wholedisk display the whole disk of the device\n\
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\t--dump dump properties of the partition\n\
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\n\
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Search options: \n\
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\t--search-uuid UUID search a partition with the specific UUID\n\
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\n\
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Other options:\n\
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\t-h, --help display this message and exit\n\
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\t-V, --version print version information and exit\n\
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\t-v, --verbose print verbose messages\n\
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\n\
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example: " PROGNAME_S " --show-fstype disk0s4\n\
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" PROGNAME_S " --show-bsdname 6A9017D9-2B9E-4786-B0A5-A75BD2264239\n\
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" PROGNAME_S " --show-blocksize disk0s4\n\
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" PROGNAME_S " --search-uuid 2C97F84A-F488-4917-A312-5D64BAE5BCFC\n");
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}
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exit (status);
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}
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#pragma mark -
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#pragma mark Main
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#pragma mark -
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// Options
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static struct option options[] =
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{
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{"search-uuid", required_argument, 0, search_uuid},
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{"show-fstype", no_argument, 0, query_fstype},
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{"show-bsdname", no_argument, 0, query_bsdname},
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{"show-mountpoint", no_argument, 0, query_mountpoint},
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{"show-volumename", no_argument, 0, query_volumename},
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{"show-uuid", no_argument, 0, query_uuid},
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{"show-blocksize", no_argument, 0, query_blocksize},
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{"show-partitionscheme", no_argument, 0, query_partitionscheme},
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{"show-contenttype", no_argument, 0, query_contenttype},
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{"show-pbrtype", no_argument, 0, query_pbrtype},
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{"show-wholedisk", no_argument, 0, query_wholedisk},
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{"dump", no_argument, 0, query_dump},
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{"help", no_argument, 0, 'h'},
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{"version", no_argument, 0, 'V'},
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{"verbose", no_argument, 0, 'v'},
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{0, 0, 0, 0}
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};
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int main(int argc, char* const argv[])
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{
|
||
queryType query = query_undefined;
|
||
searchType search = search_undefined;
|
||
char const *searchValue = NULL;
|
||
char answer[64] = "\0";
|
||
bool isSuccess = false;
|
||
|
||
/* Check for options. */
|
||
while (1) {
|
||
int c = getopt_long (argc, argv, "d:r:hVv", options, 0);
|
||
if (c == -1)
|
||
break;
|
||
else
|
||
switch (c) {
|
||
case search_uuid:
|
||
if (search != search_undefined) {
|
||
fprintf(stderr, "Error: only one search can be done !\n");
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
if (query != query_undefined) {
|
||
fprintf(stderr, "Error: can't mix query and search !\n");
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
search = c;
|
||
searchValue = optarg;
|
||
break;
|
||
|
||
case query_fstype:
|
||
case query_bsdname:
|
||
case query_mountpoint:
|
||
case query_volumename:
|
||
case query_uuid:
|
||
case query_blocksize:
|
||
case query_partitionscheme:
|
||
case query_contenttype:
|
||
case query_pbrtype:
|
||
case query_wholedisk:
|
||
case query_dump:
|
||
if (query != query_undefined) {
|
||
fprintf(stderr, "Error: only one query can be done !\n");
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
if (search != search_undefined) {
|
||
fprintf(stderr, "Error: can't mix query and search !\n");
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
query = c;
|
||
break;
|
||
|
||
case 'h':
|
||
usage (0);
|
||
break;
|
||
|
||
case 'V':
|
||
print_version();
|
||
return 0;
|
||
|
||
case 'v':
|
||
verbosity++;
|
||
break;
|
||
|
||
default:
|
||
usage (1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
argc -= optind;
|
||
|
||
/* check arguments. */
|
||
if (query == query_undefined && search == search_undefined)
|
||
usage(EXIT_SUCCESS);
|
||
|
||
if (query != query_undefined && argc < 1) {
|
||
fprintf (stderr, "Error: you must specify a device for the query !\n");
|
||
usage(EXIT_FAILURE);
|
||
}
|
||
|
||
if ( (query != query_undefined && argc != 1) ||
|
||
(search != search_undefined && argc != 0)) {
|
||
fprintf(stderr, "Error: too many arguments !\n");
|
||
usage(EXIT_FAILURE);
|
||
}
|
||
|
||
if (search != search_undefined) {
|
||
isSuccess = doSearch(search, searchValue, answer, sizeof(answer));
|
||
}
|
||
else {
|
||
char const* argument = argv[optind++];
|
||
char device[ MAXPATHLEN ];
|
||
if (strlen(argument) >= 30) { // It's must be a uuid
|
||
if (!isUUID(argument)) {
|
||
fprintf(stderr, "Error: invalid UUID value '%s'\n", argument);
|
||
return EXIT_FAILURE;
|
||
}
|
||
// it's an UUID try to get the devicename
|
||
isSuccess = doSearch(search_uuid, argument, answer, sizeof(answer));
|
||
if (!isSuccess) {
|
||
fprintf(stderr,"Error: can't find device with UUID '%s'\n",argument);
|
||
return EXIT_FAILURE;
|
||
}
|
||
strlcpy(device, answer, sizeof(device));
|
||
}
|
||
else {
|
||
strlcpy(device, toBSDName(argument), sizeof(device));
|
||
}
|
||
|
||
if (query == query_pbrtype)
|
||
isSuccess = getPBRType(device, answer, sizeof(answer));
|
||
else
|
||
isSuccess = queryDevice(device, query, answer, sizeof(answer));
|
||
}
|
||
|
||
|
||
if (isSuccess)
|
||
printf("%s\n", answer);
|
||
return isSuccess ? EXIT_SUCCESS : EXIT_FAILURE;
|
||
} |