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cgpt supports GptNextKernelEntry() and GptUpdateKernelEntry()

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Review URL: http://codereview.chromium.org/1922004
This commit is contained in:
Louis Yung-Chieh Lo
2010-05-05 11:21:08 -07:00
parent 49fa8e51ad
commit b17db3c4b9
4 changed files with 527 additions and 35 deletions
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50
cgptlib/cgpt_internal.h
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@@ -9,8 +9,6 @@
#include <stdint.h>
#include "cgpt.h"
/* Internal use only.
* Don't use them unless you know what you are doing. */
int CheckParameters(GptData *gpt);
uint32_t CheckHeaderSignature(GptData *gpt);
uint32_t CheckRevision(GptData *gpt);
@@ -33,4 +31,52 @@ typedef struct {
uint64_t ending;
} pair_t;
GptEntry *GetEntry(GptData *gpt, int secondary, int entry_index);
void SetPriority(GptData *gpt, int secondary, int entry_index, int priority);
int GetPriority(GptData *gpt, int secondary, int entry_index);
void SetBad(GptData *gpt, int secondary, int entry_index, int bad);
int GetBad(GptData *gpt, int secondary, int entry_index);
void SetTries(GptData *gpt, int secondary, int entry_index, int tries);
int GetTries(GptData *gpt, int secondary, int entry_index);
void SetSuccess(GptData *gpt, int secondary, int entry_index, int success);
int GetSuccess(GptData *gpt, int secondary, int entry_index);
/* If gpt->current_kernel is this value, means either:
* 1. an initial value before scanning GPT entries,
* 2. after scanning, no any valid kernel is found.
*/
#define CGPT_KERNEL_ENTRY_NOT_FOUND (-1)
/* Bit definitions and masks for GPT attributes.
*
* 63 -- do not automounting
* 62 -- hidden
* 60 -- read-only
* :
* 57 -- bad kernel entry
* 56 -- success
* 55,52 -- tries
* 51,48 -- priority
* 0 -- system partition
*/
#define CGPT_ATTRIBUTE_BAD_OFFSET 57
#define CGPT_ATTRIBUTE_MAX_BAD (1ULL)
#define CGPT_ATTRIBUTE_BAD_MASK (CGPT_ATTRIBUTE_MAX_BAD << \
CGPT_ATTRIBUTE_BAD_OFFSET)
#define CGPT_ATTRIBUTE_SUCCESS_OFFSET 56
#define CGPT_ATTRIBUTE_MAX_SUCCESS (1ULL)
#define CGPT_ATTRIBUTE_SUCCESS_MASK (CGPT_ATTRIBUTE_MAX_SUCCESS << \
CGPT_ATTRIBUTE_SUCCESS_OFFSET)
#define CGPT_ATTRIBUTE_TRIES_OFFSET 52
#define CGPT_ATTRIBUTE_MAX_TRIES (15ULL)
#define CGPT_ATTRIBUTE_TRIES_MASK (CGPT_ATTRIBUTE_MAX_TRIES << \
CGPT_ATTRIBUTE_TRIES_OFFSET)
#define CGPT_ATTRIBUTE_PRIORITY_OFFSET 48
#define CGPT_ATTRIBUTE_MAX_PRIORITY (15ULL)
#define CGPT_ATTRIBUTE_PRIORITY_MASK (CGPT_ATTRIBUTE_MAX_PRIORITY << \
CGPT_ATTRIBUTE_PRIORITY_OFFSET)
#endif /* VBOOT_REFERENCE_CGPT_INTERNAL_H_ */