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Add helper functions and files for gpt tests.

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Review URL: http://codereview.chromium.org/1729006
This commit is contained in:
Louis Yung-Chieh Lo
2010-04-22 21:22:22 -07:00
parent 4bbf21e476
commit 37f6b55a25
9 changed files with 409 additions and 34 deletions
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47
cgptlib/cgpt.h
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@@ -9,7 +9,8 @@
#include <stdint.h>
enum {
GPT_ERROR_NO_VALID_KERNEL = 1,
GPT_SUCCESS = 0,
GPT_ERROR_NO_VALID_KERNEL,
GPT_ERROR_INVALID_HEADERS,
GPT_ERROR_INVALID_ENTRIES,
GPT_ERROR_INVALID_SECTOR_SIZE,
@@ -28,32 +29,32 @@ enum {
/* The currently selected kernel partition failed validation. Mark entry as
* invalid. */
struct GPTData {
/* Fill in the following fields before calling GPTInit() */
uint8_t *header1; /* GPT primary header, from sector 1 of disk
* (size: 512 bytes) */
uint8_t *header2; /* GPT secondary header, from last sector of
* disk (size: 512 bytes) */
uint8_t *entries1; /* primary GPT table, follows primary header
* (size: 16 KB) */
uint8_t *entries2; /* secondary GPT table, precedes secondary
* header (size: 16 KB) */
uint32_t sector_bytes; /* Size of a LBA sector, in bytes */
uint64_t drive_sectors; /* Size of drive in LBA sectors, in sectors */
struct GptData {
/* Fill in the following fields before calling GptInit() */
uint8_t *primary_header; /* GPT primary header, from sector 1 of disk
* (size: 512 bytes) */
uint8_t *secondary_header; /* GPT secondary header, from last sector of
* disk (size: 512 bytes) */
uint8_t *primary_entries; /* primary GPT table, follows primary header
* (size: 16 KB) */
uint8_t *secondary_entries; /* secondary GPT table, precedes secondary
* header (size: 16 KB) */
uint32_t sector_bytes; /* Size of a LBA sector, in bytes */
uint64_t drive_sectors; /* Size of drive in LBA sectors, in sectors */
/* Outputs */
uint8_t modified; /* Which inputs have been modified?
* 0x01 = header1
* 0x02 = header2
* 0x04 = table1
* 0x08 = table2 */
uint8_t modified; /* Which inputs have been modified?
* 0x01 = header1
* 0x02 = header2
* 0x04 = table1
* 0x08 = table2 */
/* Internal state */
uint8_t current_kernel; // the current kernel index
uint8_t current_kernel; /* the current kernel index */
};
typedef struct GPTData GPTData_t;
typedef struct GptData GptData_t;
int GPTInit(GPTData_t *gpt);
int GptInit(GptData_t *gpt);
/* Initializes the GPT data structure's internal state. The header1, header2,
* table1, table2, and drive_size fields should be filled in first.
*
@@ -69,7 +70,7 @@ int GPTInit(GPTData_t *gpt);
* GPT_ERROR_INVALID_SECTOR_NUMBER, number of sectors in drive is invalid (too
* small) */
int GPTNextKernelEntry(GPTData_t *gpt, uint64_t *start_sector, uint64_t *size);
int GptNextKernelEntry(GptData_t *gpt, uint64_t *start_sector, uint64_t *size);
/* Provides the location of the next kernel partition, in order of decreasing
* priority. On return the start_sector parameter contains the LBA sector
* for the start of the kernel partition, and the size parameter contains the
@@ -78,7 +79,7 @@ int GPTNextKernelEntry(GPTData_t *gpt, uint64_t *start_sector, uint64_t *size);
* Returns 0 if successful, else
* GPT_ERROR_NO_VALID_KERNEL, no avaliable kernel, enters recovery mode */
int GPTUpdateKernelEntry(GPTData_t *gpt, uint32_t update_type);
int GptUpdateKernelEntry(GptData_t *gpt, uint32_t update_type);
/* Updates the kernel entry with the specified index, using the specified type
* of update (GPT_UPDATE_ENTRY_*).
*