1 files changed, 0 insertions, 412 deletions
diff --git a/libblkid/gpt.c b/libblkid/gpt.c
deleted file mode 100644
index 7288d683e..000000000
--- a/libblkid/gpt.c
+++ /dev/null
@@ -1,412 +0,0 @@
-/*
- * EFI GPT partition parsing code
- *
- * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
- *
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- *
- * This code is not copy & past from any other implementation.
- *
- * For more information about GPT start your study at:
- * http://en.wikipedia.org/wiki/GUID_Partition_Table
- * http://technet.microsoft.com/en-us/library/cc739412(WS.10).aspx
- */
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stddef.h>
-
-#include "partitions.h"
-#include "crc32.h"
-#include "dos.h"
-
-#define GPT_PRIMARY_LBA	1
-
-/* Signature - “EFI PART” */
-#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
-#define GPT_HEADER_SIGNATURE_STR "EFI PART"
-
-/* basic types */
-typedef uint16_t efi_char16_t;
-
-/* UUID */
-typedef struct {
-	uint32_t time_low;
-	uint16_t time_mid;
-	uint16_t time_hi_and_version;
-	uint8_t clock_seq_hi;
-	uint8_t clock_seq_low;
-	uint8_t node[6];
-} efi_guid_t;
-
-
-#define GPT_UNUSED_ENTRY_GUID \
-	    ((efi_guid_t) { 0x00000000, 0x0000, 0x0000, 0x00, 0x00, \
-	                    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }})
-struct gpt_header {
-	uint64_t	signature;		/* "EFI PART" */
-	uint32_t	revision;
-	uint32_t	header_size;		/* usually 92 bytes */
-	uint32_t	header_crc32;		/* checksum of header with this
-						 * field zeroed during calculation */
-	uint32_t	reserved1;
-
-	uint64_t	my_lba;			/* location of this header copy */
-	uint64_t	alternate_lba;		/* location of the other header copy */
-	uint64_t	first_usable_lba;	/* lirst usable LBA for partitions */
-	uint64_t	last_usable_lba;	/* last usable LBA for partitions */
-
-	efi_guid_t	disk_guid;		/* disk UUID */
-
-	uint64_t	partition_entries_lba;	/* always 2 in primary header copy */
-	uint32_t	num_partition_entries;
-	uint32_t	sizeof_partition_entry;
-	uint32_t	partition_entry_array_crc32;
-
-	/*
-	 * The rest of the block is reserved by UEFI and must be zero. EFI
-	 * standard handles this by:
-	 *
-	 * uint8_t		reserved2[ BLKSSZGET - 92 ];
-	 *
-	 * This definition is useless in practice. It is necessary to read
-	 * whole block from the device rather than sizeof(struct gpt_header)
-	 * only.
-	 */
-} __attribute__ ((packed));
-
-/*** not used
-struct gpt_entry_attributes {
-	uint64_t	required_to_function:1;
-	uint64_t	reserved:47;
-        uint64_t	type_guid_specific:16;
-} __attribute__ ((packed));
-***/
-
-struct gpt_entry {
-	efi_guid_t	partition_type_guid;	/* type UUID */
-	efi_guid_t	unique_partition_guid;	/* partition UUID */
-	uint64_t	starting_lba;
-	uint64_t	ending_lba;
-
-	/*struct gpt_entry_attributes	attributes;*/
-
-	uint64_t	attributes;
-
-	efi_char16_t	partition_name[72 / sizeof(efi_char16_t)]; /* UTF-16LE string*/
-} __attribute__ ((packed));
-
-
-/*
- * EFI uses crc32 with ~0 seed and xor's with ~0 at the end.
- */
-static inline uint32_t count_crc32(const unsigned char *buf, size_t len)
-{
-	return (crc32(~0L, buf, len) ^ ~0L);
-}
-
-static inline unsigned char *get_lba_buffer(blkid_probe pr,
-					uint64_t lba, size_t bytes)
-{
-	return blkid_probe_get_buffer(pr,
-			blkid_probe_get_sectorsize(pr) * lba, bytes);
-}
-
-static inline int guidcmp(efi_guid_t left, efi_guid_t right)
-{
-	return memcmp(&left, &right, sizeof (efi_guid_t));
-}
-
-/*
- * UUID is traditionally 16 byte big-endian array, except Intel EFI
- * specification where the UUID is a structure of little-endian fields.
- */
-static void swap_efi_guid(efi_guid_t *uid)
-{
-	uid->time_low = swab32(uid->time_low);
-	uid->time_mid = swab16(uid->time_mid);
-	uid->time_hi_and_version = swab16(uid->time_hi_and_version);
-}
-
-static int last_lba(blkid_probe pr, uint64_t *lba)
-{
-	blkid_loff_t sz = blkid_probe_get_size(pr);
-	unsigned int ssz = blkid_probe_get_sectorsize(pr);
-
-	if (sz < ssz)
-		return -1;
-
-	*lba = (sz / ssz) - 1ULL;
-	return 0;
-}
-
-/*
- * Protective (legacy) MBR.
- *
- * This MBR contains standard DOS partition table with a single partition, type
- * of 0xEE.  The partition usually encompassing the entire GPT drive - or 2TiB
- * for large disks.
- *
- * Note that Apple uses GPT/MBR hybrid disks, where the DOS partition table is
- * synchronized with GPT. This synchronization has many restriction of course
- * (due DOS PT limitations).
- *
- * Note that the PMBR detection is optional (enabled by default) and could be
- * disabled by BLKID_PARTS_FOPCE_GPT flag (see also blkid_paertitions_set_flags()).
- */
-static int is_pmbr_valid(blkid_probe pr)
-{
-	int flags = blkid_partitions_get_flags(pr);
-	unsigned char *data;
-	struct dos_partition *p;
-	int i;
-
-	if (flags & BLKID_PARTS_FORCE_GPT)
-		goto ok;			/* skip PMBR check */
-
-	data = blkid_probe_get_sector(pr, 0);
-	if (!data)
-		goto failed;
-
-	if (!is_valid_mbr_signature(data))
-		goto failed;
-
-	p = (struct dos_partition *) (data + BLKID_MSDOS_PT_OFFSET);
-
-	for (i = 0; i < 4; i++, p++) {
-		if (p->sys_type == BLKID_GPT_PARTITION)
-			goto ok;
-	}
-failed:
-	return 0;
-ok:
-	return 1;
-}
-
-/*
- * Reads GPT header to @hdr and returns a pointer to @hdr or NULL in case of
- * error. The function also returns GPT entries in @ents.
- *
- * Note, this function does not allocate any memory. The GPT header has fixed
- * size so we use stack, and @ents returns memory from libblkid buffer (so the
- * next blkid_probe_get_buffer() will overwrite this buffer).
- *
- * This function checks validity of header and entries array. A corrupted
- * header is not returned.
- */
-static struct gpt_header *get_gpt_header(
-				blkid_probe pr, struct gpt_header *hdr,
-				struct gpt_entry **ents, uint64_t lba,
-				uint64_t lastlba)
-{
-	struct gpt_header *h;
-	uint32_t crc, orgcrc;
-	uint64_t lu, fu;
-	size_t esz;
-	uint32_t hsz, ssz;
-
-	ssz = blkid_probe_get_sectorsize(pr);
-
-	/* whole sector is allocated for GPT header */
-	h = (struct gpt_header *) get_lba_buffer(pr, lba, ssz);
-	if (!h)
-		return NULL;
-
-	if (le64_to_cpu(h->signature) != GPT_HEADER_SIGNATURE)
-		return NULL;
-
-	hsz = le32_to_cpu(h->header_size);
-
-	/* EFI: The HeaderSize must be greater than 92 and must be less
-	 *      than or equal to the logical block size.
-	 */
-	if (hsz > ssz || hsz < sizeof(*h))
-		return NULL;
-
-	/* Header has to be verified when header_crc32 is zero */
-	orgcrc = h->header_crc32;
-	h->header_crc32 = 0;
-	crc = count_crc32((unsigned char *) h, hsz);
-	h->header_crc32 = orgcrc;
-
-	if (crc != le32_to_cpu(orgcrc)) {
-		DBG(DEBUG_LOWPROBE, printf("GPT header corrupted\n"));
-		return NULL;
-	}
-
-	/* Valid header has to be at MyLBA */
-	if (le64_to_cpu(h->my_lba) != lba) {
-		DBG(DEBUG_LOWPROBE, printf(
-			"GPT->MyLBA mismatch with real position\n"));
-		return NULL;
-	}
-
-	fu = le64_to_cpu(h->first_usable_lba);
-	lu = le64_to_cpu(h->last_usable_lba);
-
-	/* Check if First and Last usable LBA makes sense */
-	if (lu < fu || fu > lastlba || lu > lastlba) {
-		DBG(DEBUG_LOWPROBE, printf(
-			"GPT->{First,Last}UsableLBA out of range\n"));
-		return NULL;
-	}
-
-	/* The header has to be outside usable range */
-	if (fu < lba && lba < lu) {
-		DBG(DEBUG_LOWPROBE, printf("GPT header is inside usable area\n"));
-		return NULL;
-	}
-
-	/* Size of blocks with GPT entries */
-	esz = le32_to_cpu(h->num_partition_entries) *
-			le32_to_cpu(h->sizeof_partition_entry);
-	if (!esz) {
-		DBG(DEBUG_LOWPROBE, printf("GPT entries undefined\n"));
-		return NULL;
-	}
-
-	/* The header seems valid, save it
-	 * (we don't care about zeros in hdr->reserved2 area) */
-	memcpy(hdr, h, sizeof(*h));
-	h = hdr;
-
-	/* Read GPT entries */
-	*ents = (struct gpt_entry *) get_lba_buffer(pr,
-				le64_to_cpu(h->partition_entries_lba), esz);
-	if (!*ents) {
-		DBG(DEBUG_LOWPROBE, printf("GPT entries unreadable\n"));
-		return NULL;
-	}
-
-	/* Validate entries */
-	crc = count_crc32((unsigned char *) *ents, esz);
-	if (crc != le32_to_cpu(h->partition_entry_array_crc32)) {
-		DBG(DEBUG_LOWPROBE, printf("GPT entries corrupted\n"));
-		return NULL;
-	}
-
-	return h;
-}
-
-static int probe_gpt_pt(blkid_probe pr,
-		const struct blkid_idmag *mag __attribute__((__unused__)))
-{
-	uint64_t lastlba = 0, lba;
-	struct gpt_header hdr, *h;
-	struct gpt_entry *e;
-	blkid_parttable tab = NULL;
-	blkid_partlist ls;
-	uint64_t fu, lu;
-	uint32_t ssf, i;
-	efi_guid_t guid;
-
-	if (last_lba(pr, &lastlba))
-		goto nothing;
-
-	if (!is_pmbr_valid(pr))
-		goto nothing;
-
-	h = get_gpt_header(pr, &hdr, &e, (lba = GPT_PRIMARY_LBA), lastlba);
-	if (!h)
-		h = get_gpt_header(pr, &hdr, &e, (lba = lastlba), lastlba);
-
-	if (!h)
-		goto nothing;
-
-	blkid_probe_use_wiper(pr, lba * blkid_probe_get_size(pr), 8);
-
-	if (blkid_probe_set_magic(pr, lba << 9,
-			      sizeof(GPT_HEADER_SIGNATURE_STR) - 1,
-			      (unsigned char *) GPT_HEADER_SIGNATURE_STR))
-		goto err;
-
-	if (blkid_partitions_need_typeonly(pr))
-		/* caller does not ask for details about partitions */
-		return 0;
-
-	ls = blkid_probe_get_partlist(pr);
-	if (!ls)
-		goto err;
-
-	tab = blkid_partlist_new_parttable(ls, "gpt", lba << 9);
-	if (!tab)
-		goto err;
-
-	guid = h->disk_guid;
-	swap_efi_guid(&guid);
-	blkid_parttable_set_id(tab, (const unsigned char *) &guid);
-
-	ssf = blkid_probe_get_sectorsize(pr) / 512;
-
-	fu = le64_to_cpu(h->first_usable_lba);
-	lu = le64_to_cpu(h->last_usable_lba);
-
-	for (i = 0; i < le32_to_cpu(h->num_partition_entries); i++, e++) {
-
-		blkid_partition par;
-		uint64_t start = le64_to_cpu(e->starting_lba);
-		uint64_t size = le64_to_cpu(e->ending_lba) -
-					le64_to_cpu(e->starting_lba) + 1ULL;
-
-		/* 00000000-0000-0000-0000-000000000000 entry */
-		if (!guidcmp(e->partition_type_guid, GPT_UNUSED_ENTRY_GUID)) {
-			blkid_partlist_increment_partno(ls);
-			continue;
-		}
-		/* the partition has to inside usable range */
-		if (start < fu || start + size - 1 > lu) {
-			DBG(DEBUG_LOWPROBE, printf(
-				"GPT entry[%d] overflows usable area - ignore\n",
-				i));
-			blkid_partlist_increment_partno(ls);
-			continue;
-		}
-
-		par = blkid_partlist_add_partition(ls, tab,
-					start * ssf, size * ssf);
-		if (!par)
-			goto err;
-
-		blkid_partition_set_utf8name(par,
-			(unsigned char *) e->partition_name,
-			sizeof(e->partition_name), BLKID_ENC_UTF16LE);
-
-		guid = e->unique_partition_guid;
-		swap_efi_guid(&guid);
-		blkid_partition_set_uuid(par, (const unsigned char *) &guid);
-
-		guid = e->partition_type_guid;
-		swap_efi_guid(&guid);
-		blkid_partition_set_type_uuid(par, (const unsigned char *) &guid);
-
-		blkid_partition_set_flags(par, e->attributes);
-	}
-
-	return 0;
-
-nothing:
-	return 1;
-err:
-	return -1;
-}
-
-
-const struct blkid_idinfo gpt_pt_idinfo =
-{
-	.name		= "gpt",
-	.probefunc	= probe_gpt_pt,
-	.minsz		= 1024 * 1440 + 1,	/* ignore floppies */
-
-	/*
-	 * It would be possible to check for DOS signature (0xAA55), but
-	 * unfortunately almost all EFI GPT implemenations allow to optionaly
-	 * skip the legacy MBR. We follows this behavior and MBR is optional.
-	 * See is_valid_pmbr().
-	 *
-	 * It means we have to always call probe_gpt_pt().
-	 */
-	.magics		= BLKID_NONE_MAGIC
-};
-