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Second stage of implementation of GPT production.

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It implements the writer class for the backup GPT.
This commit is contained in:
Thomas Schmitt
2012-06-04 20:39:34 +02:00
parent 21109ffcf1
commit 36502f8ae3
4 changed files with 363 additions and 145 deletions
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18
libisofs/ecma119.h
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@@ -805,6 +805,8 @@ struct ecma119_image
/* Apple Partition Map description. To be composed during IsoImageWriter
method ->compute_data_blocks() by calling iso_register_apm_entry().
Make sure that the composing writers get registered before the
gpt_tail_writer.
*/
struct iso_apm_partition_request *apm_req[ISO_APM_ENTRIES_MAX];
int apm_req_count;
@@ -813,10 +815,26 @@ struct ecma119_image
/* GPT description. To be composed during IsoImageWriter
method ->compute_data_blocks() by calling iso_register_gpt_entry().
Make sure that the composing writers get registered before the
gpt_tail_writer.
*/
struct iso_gpt_partition_request *gpt_req[ISO_GPT_ENTRIES_MAX];
int gpt_req_count;
/* Messages from gpt_tail_writer_compute_data_blocks() to
iso_write_system_area().
*/
/* Start of GPT entries in System Area, block size 512 */
uint32_t gpt_part_start;
/* The ISO block number after the backup GPT header , block size 2048 */
uint32_t gpt_backup_end;
uint32_t gpt_max_entries;
/* Message from write_head_part1()/iso_write_system_area() to the
write_data() methods of the writers.
*/
uint8_t sys_area_as_written[16 * BLOCK_SIZE];
};
#define BP(a,b) [(b) - (a) + 1]