File syslinux-4.04-isohybrid_efi.diff of Package syslinux

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File syslinux-4.04-isohybrid_efi.diff of Package syslinux (Revision ece31b6ab7d3ea8de29093457c270d93)

Currently displaying revision ece31b6ab7d3ea8de29093457c270d93 , Show latest

--- mbr/altmbr.S
+++ mbr/altmbr.S
@@ -204,7 +204,7 @@
 5:
 	decb	(partition)
 	jz	boot
-	addw	$16, %bx
+	addw	$16, %si
 	loopw	5b
 
 	popw	%cx			/* %cx <- 4    */
--- mbr/isohdpfx.S
+++ mbr/isohdpfx.S
@@ -66,6 +66,37 @@
 	.globl	_start
 _start:
 	.byte	0x33, 0xed	/* xorw	%bp, %bp */
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	.byte	0x33, 0xed	/* xorw	%bp, %bp */
 	cli
 	movw	%bp, %ss
 	movw	$stack, %sp
--- mbr/mbr.S
+++ mbr/mbr.S
@@ -265,6 +265,19 @@
 	movl	%eax, 8(%si)	/* Adjust in-memory partition table entry */
 	call	read_sector
 	jc	disk_error
+
+	/* Check if the read sector is a XFS superblock */
+	cmpl	$0x42534658, (bootsec) /* "XFSB" */
+	jne	no_xfs
+
+	/* We put the Syslinux boot sector at offset 0x800 (4 sectors), so we
+	 * need to adjust %eax (%eax + 4) to read the right sector into 0x7C00.
+	 */
+	addl	$0x800 >> 0x09, %eax /* plus 4 sectors */
+	call	read_sector
+	jc	disk_error
+
+no_xfs:
 	cmpw	$0xaa55, (bootsec+510)
 	jne	missing_os		/* Not a valid boot sector */
 	movw	$driveno, %sp	/* driveno == bootsec-6 */
--- utils/Makefile
+++ utils/Makefile
@@ -47,7 +47,7 @@
 	$(PERL) isohdpfxarray.pl $(ISOHDPFX) > $@
 
 isohybrid: isohybrid.o isohdpfx.o
-	$(CC) $(LDFLAGS) -o $@ $^
+	$(CC) $(LDFLAGS) -o $@ $^ -luuid
 
 gethostip: gethostip.o
 	$(CC) $(LDFLAGS) -o $@ $^
--- utils/isohybrid.c
+++ utils/isohybrid.c
@@ -36,21 +36,29 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include <inttypes.h>
+#include <uuid/uuid.h>
 
 #include "isohybrid.h"
 
 char *prog = NULL;
 extern int opterr, optind;
 
+uuid_t disk_uuid, part_uuid, iso_uuid;
+
 uint8_t mode = 0;
-enum { VERBOSE = 1 };
+enum { VERBOSE = 1 , EFI = 2 , MAC = 4 , MODE_GPT = 8 , MODE_MBR = 0x10 };
+
+/* partition numbers (1 based) */
+int part_data = 0;
+int part_efi = 0;
+int part_mac = 0;
 
 /* user options */
 uint16_t head = 64;             /* 1 <= head <= 256 */
 uint8_t sector = 32;            /* 1 <= sector <= 63  */
 
-uint8_t entry = 1;              /* partition number: 1 <= entry <= 4 */
-uint8_t offset = 0;             /* partition offset: 0 <= offset <= 64 */
+uint8_t entry = 0;              /* partition number: 1 <= entry <= 4 */
+uint32_t offset = 0;            /* partition offset: 0 <= offset <= 0xFFFFFFFF(4294967296) */
 uint16_t type = 0x17;           /* partition type: 0 <= type <= 255 */
 uint32_t id = 0;                /* MBR: 0 <= id <= 0xFFFFFFFF(4294967296) */
 
@@ -59,12 +67,153 @@
 
 uint16_t ve[16];
 uint32_t catoffset = 0;
-uint32_t c = 0, cc = 0, cs = 0;
+uint32_t c = 0;
+
+off_t iso_size = 0;
+off_t iso_filesize = 0;
 
 /* boot catalogue parameters */
 uint32_t de_lba = 0;
 uint16_t de_seg = 0, de_count = 0, de_mbz2 = 0;
 uint8_t de_boot = 0, de_media = 0, de_sys = 0, de_mbz1 = 0;
+uint32_t efi_lba = 0, mac_lba = 0;
+uint32_t efi_count = 0, mac_count = 0;
+uint8_t efi_boot = 0, efi_media = 0, efi_sys = 0;
+
+int apm_parts = 3;
+
+uint8_t afp_header[] = { 0x45, 0x52, 0x08, 0x00, 0x00, 0x00, 0x90, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+uuid_t efi_system_partition = {0xC1, 0x2A, 0x73, 0x28, 0xF8, 0x1F, 0x11, 0xD2, 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B};
+uuid_t basic_partition = {0xEB,0xD0,0xA0,0xA2,0xB9,0xE5,0x44,0x33,0x87,0xC0,0x68,0xB6,0xB7,0x26,0x99,0xC7};
+uuid_t hfs_partition = {0x48, 0x46, 0x53, 0x00, 0x00, 0x00, 0x11, 0xAA, 0xAA, 0x11, 0x00, 0x30, 0x65, 0x43, 0xEC, 0xAC};
+
+uint32_t crc_tab[256] =
+{
+    0, 0x77073096, 0xEE0E612C, 0x990951BA,
+    0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+    0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+    0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+    0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+    0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+    0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+    0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+    0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+    0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+    0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+    0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+    0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+    0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+    0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+    0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+    0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+    0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+    0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+    0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+    0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+    0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+    0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+    0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+    0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+    0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+    0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+    0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+    0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+    0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+    0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+    0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+    0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+    0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+    0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+    0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+    0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+    0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+    0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+    0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+    0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+    0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+    0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+    0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+    0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+    0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+    0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+    0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+    0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+    0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+    0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+    0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+    0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+    0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+    0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+    0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+    0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+    0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+    0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+    0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+    0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+};
+
+struct iso_primary_descriptor {
+    uint8_t ignore [80];
+    uint32_t size;
+    uint8_t ignore2 [44];
+    uint16_t block_size;
+};
+
+struct gpt_header {
+    uint64_t signature;
+    uint32_t revision;
+    uint32_t headerSize;
+    uint32_t headerCRC;
+    uint32_t reserved;
+    uint64_t currentLBA;
+    uint64_t backupLBA;
+    uint64_t firstUsableLBA;
+    uint64_t lastUsableLBA;
+    uuid_t diskGUID;
+    uint64_t partitionEntriesLBA;
+    uint32_t numParts;
+    uint32_t sizeOfPartitionEntries;
+    uint32_t partitionEntriesCRC;
+    uint8_t reserved2[420];
+};
+
+struct gpt_part_header {
+    uuid_t partTypeGUID;
+    uuid_t partGUID;
+    uint64_t firstLBA;
+    uint64_t lastLBA;
+    uint64_t attributes;
+    uint16_t name[36];
+};
+
+#define APM_OFFSET 2048
+
+struct apple_part_header {
+    uint16_t        signature;      /* expected to be MAC_PARTITION_MAGIC */
+    uint16_t        res1;
+    uint32_t        map_count;      /* # blocks in partition map */
+    uint32_t        start_block;    /* absolute starting block # of partition */
+    uint32_t        block_count;    /* number of blocks in partition */
+    char            name[32];       /* partition name */
+    char            type[32];       /* string type description */
+    uint32_t        data_start;     /* rel block # of first data block */
+    uint32_t        data_count;     /* number of data blocks */
+    uint32_t        status;         /* partition status bits */
+    uint32_t        boot_start;
+    uint32_t        boot_count;
+    uint32_t        boot_load;
+    uint32_t        boot_load2;
+    uint32_t        boot_entry;
+    uint32_t        boot_entry2;
+    uint32_t        boot_cksum;
+    char            processor[16];  /* Contains 680x0, x=0,2,3,4; or empty */
+    uint32_t        driver_sig;
+    char            _padding[372];
+};
 
 
 void
@@ -86,9 +235,13 @@
     printf(FMT, "   -h <X>", "Number of default geometry heads");
     printf(FMT, "   -s <X>", "Number of default geometry sectors");
     printf(FMT, "   -e --entry", "Specify partition entry number (1-4)");
-    printf(FMT, "   -o --offset", "Specify partition offset (default 0)");
+    printf(FMT, "   -o --offset", "Specify partition offset (in 512 byte units, default 0)");
     printf(FMT, "   -t --type", "Specify partition type (default 0x17)");
     printf(FMT, "   -i --id", "Specify MBR ID (default random)");
+    printf(FMT, "   -u --uefi", "Build EFI bootable image");
+    printf(FMT, "   -m --mac", "Add AFP table support");
+    printf(FMT, "   --gpt", "Force GPT");
+    printf(FMT, "   --mbr", "Force MBR");
 
     printf("\n");
     printf(FMT, "   --forcehd0", "Assume we are loaded as disk ID 0");
@@ -108,6 +261,7 @@
 int
 check_option(int argc, char *argv[])
 {
+    char *err = NULL;
     int n = 0, ind = 0;
 
     const char optstr[] = ":h:s:e:o:t:i:fcp?vV";
@@ -117,10 +271,14 @@
         { "offset", required_argument, NULL, 'o' },
         { "type", required_argument, NULL, 't' },
         { "id", required_argument, NULL, 'i' },
+        { "gpt", no_argument, NULL, 1001 },
+        { "mbr", no_argument, NULL, 1002 },
 
         { "forcehd0", no_argument, NULL, 'f' },
         { "ctrlhd0", no_argument, NULL, 'c' },
         { "partok", no_argument, NULL, 'p'},
+	{ "uefi", no_argument, NULL, 'u'},
+	{ "mac", no_argument, NULL, 'm'},
 
         { "help", no_argument, NULL, '?' },
         { "verbose", no_argument, NULL, 'v' },
@@ -135,32 +293,38 @@
         switch (n)
         {
         case 'h':
-            if (!sscanf(optarg, "%hu", &head) || head < 1 || head > 256)
+            head = strtoul(optarg, &err, 0);
+            if (head < 1 || head > 256)
                 errx(1, "invalid head: `%s', 1 <= head <= 256", optarg);
             break;
 
         case 's':
-            if (!sscanf(optarg, "%hhu", &sector) || sector < 1 || sector > 63)
+            sector = strtoul(optarg, &err, 0);
+            if (sector < 1 || sector > 63)
                 errx(1, "invalid sector: `%s', 1 <= sector <= 63", optarg);
             break;
 
         case 'e':
-            if (!sscanf(optarg, "%hhu", &entry) || entry < 1 || entry > 4)
+            entry = strtoul(optarg, &err, 0);
+            if (entry < 1 || entry > 4)
                 errx(1, "invalid entry: `%s', 1 <= entry <= 4", optarg);
             break;
 
         case 'o':
-            if (!sscanf(optarg, "%hhu", &offset) || offset > 64)
-                errx(1, "invalid offset: `%s', 0 <= offset <= 64", optarg);
+            offset = strtoul(optarg, &err, 0);
+            if (*err)
+                errx(1, "invalid offset: `%s', 0 <= offset <= 0xFFFFFFFF", optarg);
             break;
 
         case 't':
-            if (!sscanf(optarg, "%hu", &type) || type > 255)
+            type = strtoul(optarg, &err, 0);
+            if (*err || type > 255)
                 errx(1, "invalid type: `%s', 0 <= type <= 255", optarg);
             break;
 
         case 'i':
-            if (!sscanf(optarg, "%u", &id))
+            id = strtoul(optarg, &err, 0);
+            if (*err)
                 errx(1, "invalid id: `%s'", optarg);
             break;
 
@@ -176,10 +340,26 @@
             partok = 1;
             break;
 
+	case 'u':
+	    mode |= EFI;
+	    break;
+
+	case 'm':
+	    mode |= MAC;
+	    break;
+
         case 'v':
             mode |= VERBOSE;
             break;
 
+        case 1001:
+            mode |= MODE_GPT;
+            break;
+
+        case 1002:
+            mode |= MODE_MBR;
+            break;
+
         case 'V':
             printf("%s version %s\n", prog, VERSION);
             exit(0);
@@ -200,6 +380,33 @@
     return optind;
 }
 
+uint16_t
+bendian_short(const uint16_t s)
+{
+    uint16_t r = 1;
+
+    if (!*(uint8_t *)&r)
+        return s;
+
+    r = (s & 0x00FF) << 8 | (s & 0xFF00) >> 8;
+
+    return r;
+}
+
+
+uint32_t
+bendian_int(const uint32_t s)
+{
+    uint32_t r = 1;
+
+    if (!*(uint8_t *)&r)
+        return s;
+
+    r = (s & 0x000000FF) << 24 | (s & 0xFF000000) >> 24
+        | (s & 0x0000FF00) << 8 | (s & 0x00FF0000) >> 8;
+
+    return r;
+}
 
 uint16_t
 lendian_short(const uint16_t s)
@@ -229,6 +436,22 @@
     return r;
 }
 
+uint64_t
+lendian_64(const uint64_t s)
+{
+	uint64_t r = 1;
+
+	if (*(uint8_t *)&r)
+		return s;
+
+       r = (s & 0x00000000000000FFull) << 56 | (s & 0xFF00000000000000ull) >> 56
+            | (s & 0x000000000000FF00ull) << 40 | (s & 0x00FF000000000000ull) >> 40
+            | (s & 0x0000000000FF0000ull) << 24 | (s & 0x0000FF0000000000ull) >> 24
+            | (s & 0x00000000FF000000ull) << 8 | (s & 0x000000FF00000000ull) >> 8;
+
+	return r;
+}
+
 
 int
 check_banner(const uint8_t *buf)
@@ -252,7 +475,7 @@
 int
 check_catalogue(const uint8_t *buf)
 {
-    int i = 0;
+    int i, cs;
 
     for (i = 0, cs = 0; i < 16; i++)
     {
@@ -307,6 +530,43 @@
 }
 
 
+int
+read_efi_section(const uint8_t *buf)
+{
+	unsigned char header_indicator;
+	unsigned char platform_id;
+	short count;
+
+	memcpy(&header_indicator, buf++, 1);
+	memcpy(&platform_id, buf++, 1);
+
+	memcpy(&count, buf, 2);
+	count = lendian_short(count);
+	buf += 2;
+
+	if (platform_id == 0xef)
+		return 0;
+
+	return 1;
+}
+
+int
+read_efi_catalogue(const uint8_t *buf, uint32_t *count, uint32_t *lba)
+{
+    buf += 6;
+
+    memcpy(count, buf, 2);
+    *count = lendian_short(*count);
+    buf += 2;
+
+    memcpy(lba, buf, 4);
+    *lba = lendian_int(*lba);
+    buf += 6;
+
+    return 0;
+}
+
+
 void
 display_catalogue(void)
 {
@@ -321,18 +581,33 @@
 }
 
 
+uint32_t ofs2chs(uint32_t ofs)
+{
+  unsigned c, h, s;
+
+  s = (ofs % sector) + 1;
+  h = (ofs / sector) % head;
+  c = ofs / (sector * head);
+  if(c > 1023) c = 1023;
+
+  return ((c & 0xff) << 24) + ((s + ((c >> 8) << 6)) << 16) + (h << 8);
+}
+
 int
 initialise_mbr(uint8_t *mbr)
 {
     int i = 0;
-    uint32_t psize = 0, tmp = 0;
-    uint8_t ptype = 0, *rbm = mbr;
-    uint8_t bhead = 0, bsect = 0, bcyle = 0;
-    uint8_t ehead = 0, esect = 0, ecyle = 0;
+    uint32_t tmp = 0, chs;
+    uint8_t *rbm = mbr;
 
     extern unsigned char isohdpfx[][MBRSIZE];
 
     memcpy(mbr, &isohdpfx[hd0 + 3 * partok], MBRSIZE);
+
+    if (mode & MAC) {
+        memcpy(mbr, afp_header, sizeof(afp_header));
+    }
+
     mbr += MBRSIZE;                                 /* offset 432 */
 
     tmp = lendian_int(de_lba * 4);
@@ -351,42 +626,92 @@
     mbr[1] = '\0';
     mbr += 2;                                       /* offset 446 */
 
-    ptype = type;
-    psize = c * head * sector - offset;
+    for (i = 1; i <= 4; i++, mbr += 16)
+    {
+        memset(mbr, 0, 16);
+
+        if (!(mode & MODE_MBR)) {
+          /* write protective mbr */
+          if(i == 1 && (mode & MODE_GPT)) {
+            chs = ofs2chs(1);
+            mbr[1] = chs >> 8;
+            mbr[2] = chs >> 16;
+            mbr[3] = chs >> 24;
+            mbr[4] = 0xee;
+            chs = ofs2chs(iso_filesize/512 - 1);
+            mbr[5] = chs >> 8;
+            mbr[6] = chs >> 16;
+            mbr[7] = chs >> 24;
+
+            tmp = lendian_int(1);
+            memcpy(&mbr[8], &tmp, sizeof(tmp));
 
-    bhead = (offset / sector) % head;
-    bsect = (offset % sector) + 1;
-    bcyle = offset / (head * sector);
+            tmp = lendian_int(iso_filesize/512 - 1);
+            memcpy(&mbr[12], &tmp, sizeof(tmp));
+          }
 
-    bsect += (bcyle & 0x300) >> 2;
-    bcyle  &= 0xFF;
+          continue;
+        }
 
-    ehead = head - 1;
-    esect = sector + (((cc - 1) & 0x300) >> 2);
-    ecyle = (cc - 1) & 0xFF;
+        if (i == 1)
+            mbr[0] = 0x80;
 
-    for (i = 1; i <= 4; i++)
-    {
-        memset(mbr, 0, 16);
-        if (i == entry)
+        if (i == part_data)
         {
-            mbr[0] = 0x80;
-            mbr[1] = bhead;
-            mbr[2] = bsect;
-            mbr[3] = bcyle;
-            mbr[4] = ptype;
-            mbr[5] = ehead;
-            mbr[6] = esect;
-            mbr[7] = ecyle;
+            chs = ofs2chs(offset);
+            mbr[1] = chs >> 8;
+            mbr[2] = chs >> 16;
+            mbr[3] = chs >> 24;
+            chs = ofs2chs(c * head * sector - 1);
+            mbr[4] = type;
+            mbr[5] = chs >> 8;
+            mbr[6] = chs >> 16;
+            mbr[7] = chs >> 24;
 
             tmp = lendian_int(offset);
             memcpy(&mbr[8], &tmp, sizeof(tmp));
 
-            tmp = lendian_int(psize);
+            tmp = lendian_int(c * head * sector - offset);
+            memcpy(&mbr[12], &tmp, sizeof(tmp));
+        }
+
+        if (i == part_efi)
+        {
+            chs = ofs2chs(efi_lba * 4);
+            mbr[1] = chs >> 8;
+            mbr[2] = chs >> 16;
+            mbr[3] = chs >> 24;
+            chs = ofs2chs(efi_lba * 4 + efi_count - 1);
+            mbr[4] = 0xef;
+            mbr[5] = chs >> 8;
+            mbr[6] = chs >> 16;
+            mbr[7] = chs >> 24;
+
+            tmp = lendian_int(efi_lba * 4);
+            memcpy(&mbr[8], &tmp, sizeof(tmp));
+
+            tmp = lendian_int(efi_count);
+            memcpy(&mbr[12], &tmp, sizeof(tmp));
+        }
+
+        if (i == part_mac)
+        {
+            mbr[1] = 0xfe;
+            mbr[2] = 0xff;
+            mbr[3] = 0xff;
+            mbr[4] = 0x0;
+            mbr[5] = 0xfe;
+            mbr[6] = 0xff;
+            mbr[7] = 0xff;
+
+            tmp = lendian_int(mac_lba * 4);
+            memcpy(&mbr[8], &tmp, sizeof(tmp));
+
+            tmp = lendian_int(mac_count);
             memcpy(&mbr[12], &tmp, sizeof(tmp));
         }
-        mbr += 16;
     }
+
     mbr[0] = 0x55;
     mbr[1] = 0xAA;
     mbr += 2;
@@ -394,7 +719,6 @@
     return mbr - rbm;
 }
 
-
 void
 display_mbr(const uint8_t *mbr, size_t len)
 {
@@ -424,14 +748,190 @@
 }
 
 
+uint32_t chksum_crc32 (unsigned char *block, unsigned int length)
+{
+	register unsigned long crc;
+	unsigned long i;
+
+	crc = 0xFFFFFFFF;
+	for (i = 0; i < length; i++)
+	{
+		crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_tab[(crc ^ *block++) & 0xFF];
+	}
+	return (crc ^ 0xFFFFFFFF);
+}
+
+void
+reverse_uuid(uuid_t uuid)
+{
+	uint8_t t, *p = (uint8_t *)uuid;
+
+	t = p[0]; p[0] = p[3]; p[3] = t;
+	t = p[1]; p[1] = p[2]; p[2] = t;
+	t = p[4]; p[4] = p[5]; p[5] = t;
+	t = p[6]; p[6] = p[7]; p[7] = t;
+}
+
+void
+set_gpt_part_name(struct gpt_part_header *part, const char *name)
+{
+    unsigned u, len = strlen(name);
+
+    if (len > sizeof part->name / sizeof *part->name)
+        len = sizeof part->name / sizeof *part->name;
+
+    // utf16le, actually
+    for (u = 0; u < len; u++)
+        part->name[u] = *name++;
+}
+
+void
+initialise_gpt(uint8_t *gpt, uint32_t current, uint32_t alternate, int primary)
+{
+    struct gpt_header *header = (struct gpt_header *)gpt;
+    struct gpt_part_header *part;
+    int hole = 0;
+    int gptsize = 128 / 4 + 2;
+    int i;
+
+    if(!(mode & MODE_GPT)) return;
+
+    if (mac_lba) {
+	/* 2048 bytes per partition, plus round to 2048 boundary */
+	hole = (apm_parts * 4) + 2;
+    }
+
+    if (primary) {
+	uuid_generate(disk_uuid);
+	reverse_uuid(disk_uuid);
+    }
+
+    header->signature = lendian_64(0x5452415020494645ull);
+    header->revision = lendian_int(0x010000);
+    header->headerSize = lendian_int(0x5c);
+    header->currentLBA = lendian_64(current);
+    header->backupLBA = lendian_64(alternate);
+    header->firstUsableLBA = lendian_64(gptsize + hole);
+    header->lastUsableLBA = lendian_64(iso_filesize/512 - gptsize);
+    if (primary)
+	header->partitionEntriesLBA = lendian_64(0x02 + hole);
+    else
+	header->partitionEntriesLBA = lendian_64(current - (128 / 4));
+    header->numParts = lendian_int(0x80);
+    header->sizeOfPartitionEntries = lendian_int(0x80);
+    memcpy(header->diskGUID, disk_uuid, sizeof(uuid_t));
+
+    if (primary)
+	gpt += sizeof(struct gpt_header) + hole * 512;
+    else
+	gpt -= header->sizeOfPartitionEntries * header->numParts;
+
+    part = (struct gpt_part_header *)gpt;
+    if (primary) {
+	uuid_generate(part_uuid);
+	uuid_generate(iso_uuid);
+	reverse_uuid(part_uuid);
+	reverse_uuid(iso_uuid);
+    }
+
+    for(i = 1; i <= 4; i++, part++) {
+        if(i == part_data) {
+            memcpy(part->partGUID, iso_uuid, sizeof(uuid_t));
+            memcpy(part->partTypeGUID, basic_partition, sizeof(uuid_t));
+            part->firstLBA = lendian_64(offset);
+            part->lastLBA = lendian_64(iso_size/512 - 1);
+            set_gpt_part_name(part, "ISOHybrid ISO");
+        }
+
+        if(i == part_efi) {
+            memcpy(part->partGUID, part_uuid, sizeof(uuid_t));
+            memcpy(part->partTypeGUID, efi_system_partition, sizeof(uuid_t));
+            part->firstLBA = lendian_64(efi_lba * 4);
+            part->lastLBA = lendian_64(part->firstLBA + efi_count - 1);
+            set_gpt_part_name(part, "ISOHybrid");
+        }
+
+        if (i == part_mac) {
+            memcpy(part->partGUID, part_uuid, sizeof(uuid_t));
+            memcpy(part->partTypeGUID, hfs_partition, sizeof(uuid_t));
+            part->firstLBA = lendian_64(mac_lba * 4);
+            part->lastLBA = lendian_64(part->firstLBA + mac_count - 1);
+            set_gpt_part_name(part, "ISOHybrid");
+        }
+    }
+
+
+    header->partitionEntriesCRC = lendian_int (chksum_crc32(gpt,
+			   header->numParts * header->sizeOfPartitionEntries));
+
+    header->headerCRC = lendian_int(chksum_crc32((uint8_t *)header,
+						 header->headerSize));
+}
+
+void
+initialise_apm(uint8_t *gpt, uint32_t start)
+{
+    struct apple_part_header *part = (struct apple_part_header *)gpt;
+
+    part->signature = bendian_short(0x504d);
+    part->map_count = bendian_int(apm_parts);
+    part->start_block = bendian_int(1);
+    part->block_count = bendian_int(0x10);
+    strcpy(part->name, "Apple");
+    strcpy(part->type, "Apple_partition_map");
+    part->data_start = bendian_int(0);
+    part->data_count = bendian_int(10);
+    part->status = bendian_int(0x03);
+
+    part = (struct apple_part_header *)(gpt + 2048);
+
+    part->signature = bendian_short(0x504d);
+    part->map_count = bendian_int(3);
+    part->start_block = bendian_int(efi_lba);
+    part->block_count = bendian_int(efi_count);
+    strcpy(part->name, "EFI");
+    strcpy(part->type, "Apple_HFS");
+    part->data_start = bendian_int(0);
+    part->data_count = bendian_int(efi_count);
+    part->status = bendian_int(0x33);
+
+    part = (struct apple_part_header *)(gpt + 4096);
+
+    if (mac_lba)
+    {
+	part->signature = bendian_short(0x504d);
+	part->map_count = bendian_int(3);
+	part->start_block = bendian_int(mac_lba);
+	part->block_count = bendian_int(mac_count);
+	strcpy(part->name, "EFI");
+	strcpy(part->type, "Apple_HFS");
+	part->data_start = bendian_int(0);
+	part->data_count = bendian_int(mac_count);
+	part->status = bendian_int(0x33);
+    } else {
+	part->signature = bendian_short(0x504d);
+	part->map_count = bendian_int(3);
+	part->start_block = bendian_int((start/2048) + 10);
+	part->block_count = bendian_int(efi_lba - start/2048 - 10);
+	strcpy(part->name, "ISO");
+	strcpy(part->type, "Apple_Free");
+	part->data_start = bendian_int(0);
+	part->data_count = bendian_int(efi_lba - start/2048 - 10);
+	part->status = bendian_int(0x01);
+    }
+}
+
 int
 main(int argc, char *argv[])
 {
     int i = 0;
     FILE *fp = NULL;
-    struct stat isostat;
     uint8_t *buf = NULL, *bufz = NULL;
-    int cylsize = 0, frac = 0, padding = 0;
+    int cylsize = 0, frac = 0;
+    unsigned padding = 0;
+    size_t orig_gpt_size, free_space, gpt_size;
+    struct iso_primary_descriptor descriptor;
+    struct stat isostat;
 
     prog = strcpy(alloca(strlen(argv[0]) + 1), argv[0]);
     i = check_option(argc, argv);
@@ -443,10 +943,32 @@
         usage();
         return 1;
     }
+
+    if (!(mode & (MODE_MBR | MODE_GPT))) {
+        mode |= (mode & EFI) ? MODE_GPT : MODE_MBR;
+    }
+
+    if ((mode & EFI) && !offset) type = 0;
+
+    part_data = 1;
+    if(mode & EFI) part_efi = 2;
+    if(mode & MAC) part_mac = 3;
+
+    if(entry) {
+      if(entry != part_efi && entry != part_mac) part_data = entry;
+    }
+
     srand(time(NULL) << (getppid() << getpid()));
 
-    if (!(fp = fopen(argv[0], "r+")))
+    if (!(fp = fopen(argv[0], "r+"))) // #####
         err(1, "could not open file `%s'", argv[0]);
+
+    if (fseek(fp, (16 << 11), SEEK_SET))
+        err(1, "%s: seek error - 0", argv[0]);
+
+    if (fread(&descriptor, sizeof(char), sizeof(descriptor), fp) != sizeof(descriptor))
+        err(1, "%s: read error - 0", argv[0]);
+
     if (fseek(fp, 17 * 2048, SEEK_SET))
         err(1, "%s: seek error - 1", argv[0]);
 
@@ -478,6 +1000,53 @@
     if (mode & VERBOSE)
         display_catalogue();
 
+    buf += 32;
+
+    if (mode & EFI)
+    {
+	if (!read_efi_section(buf)) {
+	    buf += 32;
+	    if (!read_efi_catalogue(buf, &efi_count, &efi_lba) && efi_lba) {
+              if(efi_count < 2) {
+                unsigned char bpb[512];
+
+                if (fseek(fp, (efi_lba * 2048), SEEK_SET)) {
+                  err(1, "%s: seek error - 3", argv[0]);
+                }
+
+                if (fread(bpb, 1, sizeof bpb, fp) != sizeof bpb) {
+                  err(1, "%s", argv[0]);
+                }
+
+                if((bpb[511] << 8) + bpb[510] == 0xaa55) {
+                  unsigned s = bpb[19] + (bpb[20] << 8);
+                  if(!s) s = bpb[32] + (bpb[33] << 8) + (bpb[34] << 16) + (bpb[35] << 24);
+                  if(s) efi_count = s;
+                }
+              }
+	    } else {
+		errx(1, "%s: invalid efi catalogue", argv[0]);
+	    }
+	} else {
+	    errx(1, "%s: unable to find efi image", argv[0]);
+	}
+    }
+
+    buf += 32;
+
+    if (mode & MAC)
+    {
+	if (!read_efi_section(buf)) {
+	    buf += 32;
+	    if (!read_efi_catalogue(buf, &mac_count, &mac_lba) && mac_lba) {
+	    } else {
+		errx(1, "%s: invalid efi catalogue", argv[0]);
+	    }
+	} else {
+	    errx(1, "%s: unable to find mac efi image", argv[0]);
+	}
+    }
+
     if (fseek(fp, (de_lba * 2048 + 0x40), SEEK_SET))
         err(1, "%s: seek error - 3", argv[0]);
 
@@ -491,24 +1060,55 @@
                  "signature. Note that isolinux-debug.bin does not support " \
                  "hybrid booting", argv[0]);
 
+    if (offset && efi_lba && offset > efi_lba * 4)
+    {
+        part_efi = 1;
+        part_data = 2;
+        if (part_mac)
+        {
+            part_mac = 2;
+            part_data = 3;
+        }
+    }
+
     if (stat(argv[0], &isostat))
         err(1, "%s", argv[0]);
 
+    iso_size = (off_t) lendian_int(descriptor.size) * lendian_short(descriptor.block_size);
+    free_space = isostat.st_size - iso_size;
+
     cylsize = head * sector * 512;
     frac = isostat.st_size % cylsize;
     padding = (frac > 0) ? cylsize - frac : 0;
 
     if (mode & VERBOSE)
-        printf("imgsize: %zu, padding: %d\n", (size_t)isostat.st_size, padding);
+        printf("imgsize: %zu, padding: %d\n", (size_t)iso_filesize, padding);
 
-    cc = c = (isostat.st_size + padding) / cylsize;
+    c = (isostat.st_size + padding) / cylsize;
     if (c > 1024)
     {
         warnx("Warning: more than 1024 cylinders: %d", c);
         warnx("Not all BIOSes will be able to boot this device");
-        cc = 1024;
     }
 
+    /* 512 byte header, 128 entries of 128 bytes */
+    orig_gpt_size = gpt_size = 512 + (128 * 128);
+
+    /* Leave space for the APM if necessary */
+    if (mac_lba)
+        gpt_size += (4 * 2048);
+
+    /*
+     * We need to ensure that we have enough space for the secondary GPT.
+     * Unlike the primary, this doesn't need a hole for the APM. We still
+     * want to be 1MB aligned so just bump the padding by a megabyte.
+     */
+    if ((mode & MODE_GPT) && free_space < orig_gpt_size && padding < orig_gpt_size) {
+        padding += 1024 * 1024;
+    }
+
+    iso_filesize = isostat.st_size + padding;
+
     if (!id)
     {
         if (fseek(fp, 440, SEEK_SET))
@@ -530,6 +1130,16 @@
 
     buf = bufz;
     memset(buf, 0, BUFSIZE);
+
+    if (fseek(fp, 0, SEEK_SET))
+        err(1, "%s: seek error - 5", argv[0]);
+
+    /* clean up first 16 blocks */
+    for (i = 0; i < 16; i++) {
+        if (fwrite(buf, sizeof(char), BUFSIZE, fp) != BUFSIZE)
+            err(1, "%s: write error - 1", argv[0]);
+    }
+
     i = initialise_mbr(buf);
 
     if (mode & VERBOSE)
@@ -541,15 +1151,74 @@
     if (fwrite(buf, sizeof(char), i, fp) != (size_t)i)
         err(1, "%s: write error - 1", argv[0]);
 
+    if (mode & MODE_GPT) {
+        /* always write primary gpt, if only to cleanup old data */
+	reverse_uuid(efi_system_partition);
+	reverse_uuid(basic_partition);
+	reverse_uuid(hfs_partition);
+
+	buf = calloc(gpt_size, sizeof(char));
+	memset(buf, 0, gpt_size);
+
+	/*
+	 * Primary GPT starts at sector 1, secondary GPT starts at 1 sector
+	 * before the end of the image
+	 */
+	initialise_gpt(buf, 1, iso_filesize / 512 - 1, 1);
+
+	if (fseek(fp, 512, SEEK_SET))
+	    err(1, "%s: seek error - 6", argv[0]);
+
+	if (fwrite(buf, sizeof(char), gpt_size, fp) != (size_t)gpt_size)
+	    err(1, "%s: write error - 2", argv[0]);
+    }
+
+    if (mac_lba)
+    {
+	/* Apple partition entries filling 2048 bytes each */
+	int apm_size = apm_parts * 2048;
+
+	buf = realloc(buf, apm_size);
+	memset(buf, 0, apm_size);
+
+	initialise_apm(buf, APM_OFFSET);
+
+	fseek(fp, APM_OFFSET, SEEK_SET);
+	fwrite(buf, sizeof(char), apm_size, fp);
+    }
+
     if (padding)
     {
         if (fsync(fileno(fp)))
             err(1, "%s: could not synchronise", argv[0]);
 
-        if (ftruncate(fileno(fp), isostat.st_size + padding))
+        if (ftruncate(fileno(fp), iso_filesize))
             err(1, "%s: could not add padding bytes", argv[0]);
     }
 
+    if (mode & MODE_GPT) {
+	buf = realloc(buf, orig_gpt_size);
+	memset(buf, 0, orig_gpt_size);
+
+	buf += orig_gpt_size - sizeof(struct gpt_header);
+
+	initialise_gpt(buf, iso_filesize / 512 - 1, 1, 0);
+
+	/* Shift back far enough to write the 128 GPT entries */
+	buf -= 128 * sizeof(struct gpt_part_header);
+
+	/*
+	 * Seek far enough back that the gpt header is 512 bytes before the
+	 * end of the image
+	 */
+
+	if (fseek(fp, iso_filesize - orig_gpt_size, SEEK_SET))
+	    err(1, "%s: seek error - 8", argv[0]);
+
+	if (fwrite(buf, sizeof(char), orig_gpt_size, fp) != orig_gpt_size)
+	    err(1, "%s: write error - 4", argv[0]);
+    }
+
     free(buf);
     fclose(fp);
 
--- utils/isohybrid.h
+++ utils/isohybrid.h
@@ -20,7 +20,7 @@
  *
  */
 
-#define VERSION     "0.11"
+#define VERSION     "0.12.1"
 #define BUFSIZE     2048
 #define MBRSIZE      432

Places

File syslinux-4.04-isohybrid_efi.diff of Package syslinux (Revision ece31b6ab7d3ea8de29093457c270d93)

Places