fastbootd: erase, boot and partitioning commands
Change-Id: I49ba2ba2e002fd5b6bbd37cc3fd0caa106f42010
diff --git a/fastbootd/commands/partitions.c b/fastbootd/commands/partitions.c
new file mode 100644
index 0000000..3bfc298
--- /dev/null
+++ b/fastbootd/commands/partitions.c
@@ -0,0 +1,738 @@
+/*
+ * Copyright (c) 2009-2013, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google, Inc. nor the names of its contributors
+ * may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <endian.h>
+#include <zlib.h>
+#include <linux/hdreg.h>
+#include <sys/ioctl.h>
+#include <stdlib.h>
+#include <cutils/config_utils.h>
+
+#include "partitions.h"
+#include "debug.h"
+#include "utils.h"
+#include "protocol.h"
+
+#define MMAP2_SHIFT 12
+
+#define BLKRRPART _IO(0x12,95) /* re-read partition table */
+#define BLKSSZGET _IO(0x12,104)
+
+#define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y))
+#define ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y)))
+#define ALIGN_DOWN(x, y) ((y) * ((x) / (y)))
+
+
+const uint16_t partition_type_uuid[16] = {
+ 0xa2, 0xa0, 0xd0, 0xeb, 0xe5, 0xb9, 0x33, 0x44,
+ 0x87, 0xc0, 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7,
+};
+
+//TODO: If both blocks are invalid should I leave everything to vendor (through libvendor)
+
+static void GPT_entry_clear(struct GPT_entry_raw *entry)
+{
+ memset(entry, 0, sizeof(*entry));
+}
+
+extern void* __mmap2(void *, size_t, int, int, int, off_t);
+
+static inline void *mmap64(void *addr, size_t length, int prot,
+ int flags, int fd, uint64_t offset) {
+ return __mmap2(addr, length, prot, flags, fd, offset >> MMAP2_SHIFT);
+}
+
+/*
+ * returns mapped location to choosen area
+ * mapped_ptr is pointer to whole area mapped (it can be bigger then requested)
+ */
+int gpt_mmap(struct GPT_mapping *mapping, uint64_t location, int size, int fd)
+{
+ unsigned int location_diff = location & ~PAGE_MASK;
+
+ mapping->size = ALIGN(size + location_diff, PAGE_SIZE);
+
+ uint64_t sz = get_file_size64(fd);
+ if (sz < size + location) {
+ D(ERR, "the location of mapping area is outside of the device size %lld", sz);
+ return 1;
+ }
+
+ mapping->map_ptr = mmap64(NULL, mapping->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, location);
+
+ if (mapping->map_ptr == MAP_FAILED) {
+ mapping->ptr = MAP_FAILED;
+ D(ERR, "map failed %d", (int) mapping->map_ptr);
+ return 1;
+ }
+
+ mapping->ptr = (void *)((char *) mapping->map_ptr + location_diff);
+ return 0;
+}
+
+void gpt_unmap(struct GPT_mapping *mapping) {
+ munmap(mapping->map_ptr, mapping->size);
+}
+
+
+#define LBA_ADDR(table, value) ((uint64_t) (table)->sector_size * (value))
+
+int GPT_map_from_content(struct GPT_entry_table *table, const struct GPT_content *content)
+{
+
+ // Mapping header
+ if (gpt_mmap(&table->header_map, LBA_ADDR(table, content->header.current_lba),
+ table->sector_size, table->fd)) {
+ D(ERR, "unable to map header:%s\n", strerror(errno));
+ goto error_header;
+ }
+
+ table->header = (struct GPT_header *) table->header_map.ptr;
+
+ table->partition_table_size = ROUND_UP(content->header.entries_count * sizeof(*table->entries),
+ table->sector_size);
+
+ // Mapping entry table
+ if (gpt_mmap(&table->entries_map, LBA_ADDR(table, content->header.entries_lba),
+ table->partition_table_size, table->fd)) {
+ D(ERR, "unable to map entries");
+ goto error_signature;
+ }
+
+ table->entries = (struct GPT_entry_raw *) table->entries_map.ptr;
+
+ // Mapping secondary header
+ if (gpt_mmap(&table->sec_header_map, LBA_ADDR(table, content->header.backup_lba),
+ table->sector_size, table->fd)) {
+ D(ERR, "unable to map backup gpt header");
+ goto error_sec_header;
+ }
+
+ // Mapping secondary entries table
+ if (gpt_mmap(&table->sec_entries_map,
+ LBA_ADDR(table, content->header.backup_lba) - table->partition_table_size,
+ table->partition_table_size, table->fd)) {
+ D(ERR, "unable to map secondary gpt table");
+ goto error_sec_entries;
+ }
+
+ table->second_header = (struct GPT_header *) table->sec_header_map.ptr;
+ table->second_entries = (struct GPT_entry_raw *) table->sec_entries_map.ptr;
+ table->second_valid = strcmp("EFI PART", (char *) table->second_header->signature) == 0;
+
+ return 0;
+
+error_sec_entries:
+ gpt_unmap(&table->sec_header_map);
+error_sec_header:
+ gpt_unmap(&table->entries_map);
+error_signature:
+ gpt_unmap(&table->header_map);
+error_header:
+ return 1;
+}
+
+int GPT_map(struct GPT_entry_table *table, unsigned header_lba)
+{
+ struct GPT_content content;
+ struct GPT_mapping mapping;
+ struct GPT_header *header;
+
+ if (gpt_mmap(&mapping, LBA_ADDR(table, header_lba), table->sector_size, table->fd)) {
+ D(ERR, "unable to map header: %s", strerror(errno));
+ goto error_header;
+ }
+
+ header = (struct GPT_header *) mapping.ptr;
+
+ if (strcmp("EFI PART", (char *) header->signature)) {
+ D(ERR, "GPT entry not valid");
+ goto error_signature;
+ }
+
+ content.header = *header;
+
+ gpt_unmap(&mapping);
+
+ return GPT_map_from_content(table, &content);
+
+error_signature:
+ gpt_unmap(&table->header_map);
+error_header:
+ return 1;
+}
+
+struct GPT_entry_table* GPT_get_device(const char *path, unsigned header_lba)
+{
+ struct GPT_entry_table *table;
+ size_t sector_bytes;
+
+ table = (struct GPT_entry_table *) malloc(sizeof(*table));
+ table->fd = open(path, O_RDWR);
+
+ if (table->fd < 0) {
+ D(ERR, "unable to open file %s:%s\n", path, strerror(errno));
+ return NULL;
+ }
+
+ if (!ioctl(table->fd, BLKSSZGET, §or_bytes)) {
+ table->sector_size = (unsigned) sector_bytes;
+ D(INFO, "Got sector size %d", table->sector_size);
+ } else {
+ D(WARN, "unable to get sector size, assuming 512");
+ table->sector_size = 512;
+ }
+
+ if (GPT_map(table, header_lba)) {
+ D(ERR, "Could not map gpt");
+ return NULL;
+ }
+
+ return table;
+}
+
+static struct GPT_entry_table* GPT_get_from_content(const char *path, const struct GPT_content *content)
+{
+ struct GPT_entry_table *table;
+ size_t sector_bytes;
+
+ table = (struct GPT_entry_table *) malloc(sizeof(*table));
+ table->fd = open(path, O_RDWR);
+
+ if (table->fd < 0) {
+ D(ERR, "unable to open file %s:%s\n", path, strerror(errno));
+ return NULL;
+ }
+
+ if (!ioctl(table->fd, BLKSSZGET, §or_bytes)) {
+ table->sector_size = (unsigned) sector_bytes;
+ D(INFO, "Got sector size %d", table->sector_size);
+ } else {
+ D(WARN, "unable to get sector size %s, assuming 512", strerror(errno));
+ table->sector_size = 512;
+ }
+
+ if (GPT_map_from_content(table, content)) {
+ D(ERR, "Could not map gpt");
+ return NULL;
+ }
+
+ return table;
+}
+
+
+void GPT_release_device(struct GPT_entry_table *table)
+{
+ gpt_unmap(&table->header_map);
+ gpt_unmap(&table->entries_map);
+ gpt_unmap(&table->sec_header_map);
+ gpt_unmap(&table->sec_entries_map);
+ close(table->fd);
+ free(table);
+}
+
+static int GPT_check_overlap(struct GPT_entry_table *table, struct GPT_entry_raw *entry);
+static int GPT_check_overlap_except(struct GPT_entry_table *table,
+ struct GPT_entry_raw *entry,
+ struct GPT_entry_raw *exclude);
+
+void GPT_edit_entry(struct GPT_entry_table *table,
+ struct GPT_entry_raw *old_entry,
+ struct GPT_entry_raw *new_entry)
+{
+ struct GPT_entry_raw *current_entry = GPT_get_pointer(table, old_entry);
+
+ if (GPT_check_overlap_except(table, new_entry, current_entry)) {
+ D(ERR, "Couldn't add overlaping partition");
+ return;
+ }
+
+ if (current_entry == NULL) {
+ D(ERR, "Couldn't find entry");
+ return;
+ }
+
+ *current_entry = *new_entry;
+}
+
+int GPT_delete_entry(struct GPT_entry_table *table, struct GPT_entry_raw *entry)
+{
+ struct GPT_entry_raw *raw = GPT_get_pointer(table, entry);
+
+ if (raw == NULL) {
+ D(ERR, "could not find entry");
+ return 1;
+ }
+ D(DEBUG, "Deleting gpt entry '%s'\n", raw->partition_guid);
+
+ // This entry can be empty in the middle
+ GPT_entry_clear(raw);
+
+ return 0;
+}
+
+void GPT_add_entry(struct GPT_entry_table *table, struct GPT_entry_raw *entry)
+{
+ unsigned i;
+ int inserted = 0;
+ if (GPT_check_overlap(table, entry)) {
+ D(ERR, "Couldn't add overlaping partition");
+ return;
+ }
+
+ if (GPT_get_pointer(table, entry) != NULL) {
+ D(WARN, "Add entry fault, this entry already exists");
+ return;
+ }
+
+ struct GPT_entry_raw *entries = table->entries;
+
+ for (i = 0; i < table->header->entries_count; ++i) {
+ if (!entries[i].type_guid[0]) {
+ inserted = 1;
+ D(DEBUG, "inserting");
+ memcpy(&entries[i], entry, sizeof(entries[i]));
+ break;
+ }
+ }
+
+ if (!inserted) {
+ D(ERR, "Unable to find empty partion entry");
+ }
+}
+
+struct GPT_entry_raw *GPT_get_pointer_by_UTFname(struct GPT_entry_table *table, const uint16_t *name);
+
+struct GPT_entry_raw *GPT_get_pointer(struct GPT_entry_table *table, struct GPT_entry_raw *entry)
+{
+ if (entry->partition_guid[0] != 0)
+ return GPT_get_pointer_by_guid(table, (const char *) entry->partition_guid);
+ else if (entry->name[0] != 0)
+ return GPT_get_pointer_by_UTFname(table, entry->name);
+
+ D(WARN, "Name or guid needed to find entry");
+ return NULL;
+}
+
+struct GPT_entry_raw *GPT_get_pointer_by_guid(struct GPT_entry_table *table, const char *name)
+{
+ int current = (int) table->header->entries_count;
+
+ for (current = current - 1; current >= 0; --current) {
+ if (strncmp((char *) name,
+ (char *) table->entries[current].partition_guid, 16) == 0) {
+ return &table->entries[current];
+ }
+ }
+
+ return NULL;
+}
+
+int strncmp_UTF16_char(const uint16_t *s1, const char *s2, size_t n)
+{
+ if (n == 0)
+ return (0);
+ do {
+ if (((*s1) & 127) != *s2++)
+ return (((unsigned char) ((*s1) & 127)) - *(unsigned char *)--s2);
+ if (*s1++ == 0)
+ break;
+ } while (--n != 0);
+ return (0);
+}
+
+int strncmp_UTF16(const uint16_t *s1, const uint16_t *s2, size_t n)
+{
+ if (n == 0)
+ return (0);
+ do {
+ if ((*s1) != *s2++)
+ return (*s1 - *--s2);
+ if (*s1++ == 0)
+ break;
+ } while (--n != 0);
+ return (0);
+}
+
+struct GPT_entry_raw *GPT_get_pointer_by_name(struct GPT_entry_table *table, const char *name)
+{
+ //TODO: reverse direction
+ int count = (int) table->header->entries_count;
+ int current;
+
+ for (current = 0; current < count; ++current) {
+ if (strncmp_UTF16_char(table->entries[current].name,
+ (char *) name, 16) == 0) {
+ return &table->entries[current];
+ }
+ }
+
+ return NULL;
+}
+
+struct GPT_entry_raw *GPT_get_pointer_by_UTFname(struct GPT_entry_table *table, const uint16_t *name)
+{
+ int count = (int) table->header->entries_count;
+ int current;
+
+ for (current = 0; current < count; ++current) {
+ if (strncmp_UTF16(table->entries[current].name,
+ name, GPT_NAMELEN) == 0) {
+ return &table->entries[current];
+ }
+ }
+
+ return NULL;
+}
+
+void GPT_sync(struct GPT_entry_table *table)
+{
+ uint32_t crc;
+
+ //calculate crc32
+ crc = crc32(0, Z_NULL, 0);
+ crc = crc32(crc, (void*) table->entries, table->header->entries_count * sizeof(*table->entries));
+ table->header->partition_array_checksum = crc;
+
+ table->header->header_checksum = 0;
+ crc = crc32(0, Z_NULL, 0);
+ crc = crc32(crc, (void*) table->header, sizeof(*table->header));
+ table->header->header_checksum = crc;
+
+ //sync secondary partion
+ if (table->second_valid) {
+ memcpy((void *)table->second_entries, (void *) table->entries, table->partition_table_size);
+ memcpy((void *)table->second_header, (void *)table->header, sizeof(*table->header));
+ }
+
+ if(!ioctl(table->fd, BLKRRPART, NULL)) {
+ D(WARN, "Unable to force kernel to refresh partition table");
+ }
+}
+
+void GPT_to_UTF16(uint16_t *to, const char *from, int n)
+{
+ int i;
+ for (i = 0; i < (n - 1) && (to[i] = from[i]) != '\0'; ++i);
+ to[i] = '\0';
+}
+
+void GPT_from_UTF16(char *to, const uint16_t *from, int n)
+{
+ int i;
+ for (i = 0; i < (n - 1) && (to[i] = from[i] & 127) != '\0'; ++i);
+ to[i] = '\0';
+}
+
+static int GPT_check_overlap_except(struct GPT_entry_table *table,
+ struct GPT_entry_raw *entry,
+ struct GPT_entry_raw *exclude) {
+ int current = (int) table->header->entries_count;
+ int dontcheck;
+ struct GPT_entry_raw *current_entry;
+ if (entry->last_lba < entry->first_lba) {
+ D(WARN, "Start address have to be less than end address");
+ return 1;
+ }
+
+ for (current = current - 1; current >= 0; --current) {
+ current_entry = &table->entries[current];
+ dontcheck = strncmp((char *) entry->partition_guid,
+ (char *) current_entry->partition_guid , 16) == 0;
+ dontcheck |= current_entry->type_guid[0] == 0;
+ dontcheck |= current_entry == exclude;
+
+ if (!dontcheck && ((entry->last_lba >= current_entry->first_lba &&
+ entry->first_lba < current_entry->last_lba ))) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int GPT_check_overlap(struct GPT_entry_table *table, struct GPT_entry_raw *entry)
+{
+ return GPT_check_overlap_except(table, entry, NULL);
+}
+
+static char *get_key_value(char *ptr, char **key, char **value)
+{
+ *key = ptr;
+ ptr = strchr(ptr, '=');
+
+ if (ptr == NULL)
+ return NULL;
+
+ *ptr++ = '\0';
+ *value = ptr;
+ ptr = strchr(ptr, ';');
+
+ if (ptr == NULL)
+ ptr = *value + strlen(*value);
+ else
+ *ptr = '\0';
+
+ *key = strip(*key);
+ *value = strip(*value);
+
+ return ptr;
+}
+
+//TODO: little endian?
+static int add_key_value(const char *key, const char *value, struct GPT_entry_raw *entry)
+{
+ char *endptr;
+ if (!strcmp(key, "type")) {
+ strncpy((char *) entry->type_guid, value, 16);
+ entry->type_guid[15] = 0;
+ }
+ else if (!strcmp(key, "guid")) {
+ strncpy((char *) entry->partition_guid, value, 16);
+ entry->type_guid[15] = 0;
+ }
+ else if (!strcmp(key, "firstlba")) {
+ entry->first_lba = strtoul(value, &endptr, 10);
+ if (*endptr != '\0') goto error;
+ }
+ else if (!strcmp(key, "lastlba")) {
+ entry->last_lba = strtoul(value, &endptr, 10);
+ if (*endptr != '\0') goto error;
+ }
+ else if (!strcmp(key, "flags")) {
+ entry->flags = strtoul(value, &endptr, 10);
+ if (*endptr != '\0') goto error;
+ }
+ else if (!strcmp(key, "name")) {
+ GPT_to_UTF16(entry->name, value, GPT_NAMELEN);
+ }
+ else {
+ goto error;
+ }
+
+ return 0;
+
+error:
+ D(ERR, "Could not find key or parse value: %s,%s", key, value);
+ return 1;
+}
+
+int GPT_parse_entry(char *string, struct GPT_entry_raw *entry)
+{
+ char *ptr = string;
+ char *key, *value;
+
+ while ((ptr = get_key_value(ptr, &key, &value)) != NULL) {
+ if (add_key_value(key, value, entry)) {
+ D(WARN, "key or value not valid: %s %s", key, value);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static void entry_set_guid(int n, uint8_t *guid)
+{
+ guid[0] = (uint8_t) (n + 1);
+ int fd;
+ fd = open("/dev/urandom", O_RDONLY);
+ read(fd, &guid[1], 15);
+ close(fd);
+}
+
+void GPT_default_content(struct GPT_content *content, struct GPT_entry_table *table)
+{
+ if (table != NULL) {
+ memcpy(&content->header, table->header, sizeof(content->header));
+ }
+ else {
+ D(WARN, "Could not locate old gpt table, using default values");
+ memset(&content->header, 0, sizeof(content->header) / sizeof(int));
+ content->header = (struct GPT_header) {
+ .revision = 0x0100,
+ .header_size = sizeof(content->header),
+ .header_checksum = 0,
+ .reserved_zeros = 0,
+ .current_lba = 1,
+ .backup_lba = 1,
+ .entry_size = sizeof(struct GPT_entry_raw),
+ .partition_array_checksum = 0
+ };
+ strncpy((char *)content->header.signature, "EFI PART", 8);
+ entry_set_guid(0, content->header.disk_guid);
+ }
+}
+
+static int get_config_uint64(cnode *node, uint64_t *ptr, const char *name)
+{
+ const char *tmp;
+ uint64_t val;
+ char *endptr;
+ if ((tmp = config_str(node, name, NULL))) {
+ val = strtoull(tmp, &endptr, 10);
+ if (*endptr != '\0') {
+ D(WARN, "Value for %s is not a number: %s", name, tmp);
+ return 1;
+ }
+ *ptr = val;
+ return 0;
+ }
+ return 1;
+}
+
+static void GPT_parse_header(cnode *node, struct GPT_content *content)
+{
+ get_config_uint64(node, &content->header.current_lba, "header_lba");
+ get_config_uint64(node, &content->header.backup_lba, "backup_lba");
+ get_config_uint64(node, &content->header.first_usable_lba, "first_lba");
+ get_config_uint64(node, &content->header.last_usable_lba, "last_lba");
+ get_config_uint64(node, &content->header.entries_lba, "entries_lba");
+}
+
+static int GPT_parse_partitions(cnode *node, struct GPT_content *content)
+{
+ cnode *current;
+ int i;
+ uint64_t partition_size;
+ for (i = 0, current = node->first_child; current; current = current->next, ++i) {
+ entry_set_guid(i, content->entries[i].partition_guid);
+ memcpy(&content->entries[i].type_guid, partition_type_uuid, 16);
+ if (get_config_uint64(current, &content->entries[i].first_lba, "first_lba")) {
+ D(ERR, "first_lba not specified");
+ return 1;
+ }
+ if (get_config_uint64(current, &partition_size, "partition_size")) {
+ D(ERR, "partition_size not specified");
+ return 1;
+ }
+ get_config_uint64(current, &content->entries[i].flags, "flags");
+ content->entries[i].last_lba = content->entries[i].first_lba + partition_size - 1;
+ GPT_to_UTF16(content->entries[i].name, current->name, 16);
+ }
+ return 0;
+}
+
+static inline int cnode_count(cnode *node)
+{
+ int i;
+ cnode *current;
+ for (i = 0, current = node->first_child; current; current = current->next, ++i)
+ ;
+ return i;
+}
+
+
+static int GPT_parse_cnode(cnode *root, struct GPT_content *content)
+{
+ cnode *partnode;
+
+ if (!(partnode = config_find(root, "partitions"))) {
+ D(ERR, "Could not find partition table");
+ return 0;
+ }
+
+ GPT_parse_header(root, content);
+
+ content->header.entries_count = cnode_count(partnode);
+ content->entries = malloc(content->header.entries_count * sizeof(struct GPT_entry_raw));
+
+ if (GPT_parse_partitions(partnode, content)) {
+ D(ERR, "Could not parse partitions");
+ return 0;
+ }
+
+ return 1;
+}
+
+int GPT_parse_file(int fd, struct GPT_content *content)
+{
+ char *data;
+ int size;
+ int ret;
+ cnode *root = config_node("", "");
+
+ size = get_file_size(fd);
+ data = (char *) mmap(NULL, size + 1, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+
+ if (data == NULL) {
+ if (size == 0)
+ D(ERR, "config file empty");
+ else
+ D(ERR, "Out of memory");
+ return 0;
+ }
+
+ data[size - 1] = 0;
+ config_load(root, data);
+
+ if (root->first_child == NULL) {
+ D(ERR, "Could not read config file");
+ return 0;
+ }
+
+ ret = GPT_parse_cnode(root, content);
+ munmap(data, size);
+ return ret;
+}
+
+void GPT_release_content(struct GPT_content *content)
+{
+ free(content->entries);
+}
+
+int GPT_write_content(const char *device, struct GPT_content *content)
+{
+ struct GPT_entry_table *maptable;
+
+ maptable = GPT_get_from_content(device, content);
+ if (maptable == NULL) {
+ D(ERR, "could not map device");
+ return 0;
+ }
+
+ memcpy(maptable->header, &content->header, sizeof(*maptable->header));
+ memcpy(maptable->entries, content->entries,
+ content->header.entries_count * sizeof(*maptable->entries));
+
+ //GPT_sync(maptable);
+ GPT_release_device(maptable);
+
+ return 1;
+}
+