diff options
Diffstat (limited to 'cgpt/cgpt_create.c')
-rw-r--r-- | cgpt/cgpt_create.c | 82 |
1 files changed, 55 insertions, 27 deletions
diff --git a/cgpt/cgpt_create.c b/cgpt/cgpt_create.c index 8c899d19..b567432f 100644 --- a/cgpt/cgpt_create.c +++ b/cgpt/cgpt_create.c @@ -9,42 +9,33 @@ #include "cgptlib_internal.h" #include "cgpt_params.h" -int cgpt_create(CgptCreateParams *params) { - struct drive drive; - - if (params == NULL) - return CGPT_FAILED; - - if (CGPT_OK != DriveOpen(params->drive_name, &drive, O_RDWR)) - return CGPT_FAILED; - +int GptCreate(struct drive *drive, CgptCreateParams *params) { // Erase the data - memset(drive.gpt.primary_header, 0, - drive.gpt.sector_bytes * GPT_HEADER_SECTOR); - memset(drive.gpt.secondary_header, 0, - drive.gpt.sector_bytes * GPT_HEADER_SECTOR); - memset(drive.gpt.primary_entries, 0, - drive.gpt.sector_bytes * GPT_ENTRIES_SECTORS); - memset(drive.gpt.secondary_entries, 0, - drive.gpt.sector_bytes * GPT_ENTRIES_SECTORS); - - drive.gpt.modified |= (GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1 | + memset(drive->gpt.primary_header, 0, + drive->gpt.sector_bytes * GPT_HEADER_SECTOR); + memset(drive->gpt.secondary_header, 0, + drive->gpt.sector_bytes * GPT_HEADER_SECTOR); + memset(drive->gpt.primary_entries, 0, + drive->gpt.sector_bytes * GPT_ENTRIES_SECTORS); + memset(drive->gpt.secondary_entries, 0, + drive->gpt.sector_bytes * GPT_ENTRIES_SECTORS); + + drive->gpt.modified |= (GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1 | GPT_MODIFIED_HEADER2 | GPT_MODIFIED_ENTRIES2); // Initialize a blank set - if (!params->zap) - { - GptHeader *h = (GptHeader *)drive.gpt.primary_header; + if (!params->zap) { + GptHeader *h = (GptHeader *)drive->gpt.primary_header; memcpy(h->signature, GPT_HEADER_SIGNATURE, GPT_HEADER_SIGNATURE_SIZE); h->revision = GPT_HEADER_REVISION; h->size = sizeof(GptHeader); h->my_lba = 1; - h->alternate_lba = drive.gpt.drive_sectors - 1; + h->alternate_lba = drive->gpt.drive_sectors - 1; h->first_usable_lba = 1 + 1 + GPT_ENTRIES_SECTORS; - h->last_usable_lba = drive.gpt.drive_sectors - 1 - GPT_ENTRIES_SECTORS - 1; + h->last_usable_lba = drive->gpt.drive_sectors - 1 - GPT_ENTRIES_SECTORS - 1; if (!uuid_generator) { Error("Unable to generate new GUID. uuid_generator not set.\n"); - goto bad; + return -1; } (*uuid_generator)((uint8_t *)&h->disk_uuid); h->entries_lba = 2; @@ -52,9 +43,46 @@ int cgpt_create(CgptCreateParams *params) { h->size_of_entry = sizeof(GptEntry); // Copy to secondary - RepairHeader(&drive.gpt, MASK_PRIMARY); + RepairHeader(&drive->gpt, MASK_PRIMARY); + + UpdateCrc(&drive->gpt); + } + + return 0; +} + +int MtdCreate(struct drive *drive, CgptCreateParams *params) { + MtdDiskLayout *h = &drive->mtd.primary; + memset(h, 0, sizeof(*h)); + drive->mtd.modified = 1; - UpdateCrc(&drive.gpt); + if (!params->zap) { + // Prep basic parameters + memcpy(h->signature, MTD_DRIVE_SIGNATURE, sizeof(h->signature)); + h->size = sizeof(*h); + h->first_lba = 0; + h->last_lba = drive->mtd.drive_sectors - 1; + h->crc32 = MtdHeaderCrc(h); + } + + return 0; +} + +int cgpt_create(CgptCreateParams *params) { + struct drive drive; + + if (params == NULL) + return CGPT_FAILED; + + if (CGPT_OK != DriveOpen(params->drive_name, &drive, O_RDWR)) + return CGPT_FAILED; + + if (drive.is_mtd) { + if (MtdCreate(&drive, params)) + goto bad; + } else { + if (GptCreate(&drive, params)) + goto bad; } // Write it all out |