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disk: part_efi: add get_partition_info_efi_by_name()

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Add function to find a GPT table entry by name.

Tested on little endian ARMv7 and ARMv8 configurations

Signed-off-by: Steve Rae <srae@broadcom.com>
This commit is contained in:
Steve Rae 2014-05-26 11:52:24 -07:00 committed by Tom Rini
parent e04350d299
commit 60bf941693
2 changed files with 31 additions and 1 deletions
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21
disk/part_efi.c
View File

@ -181,7 +181,7 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
UUID_STR_FORMAT_GUID);
#endif
debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s", __func__,
debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__,
info->start, info->size, info->name);
/* Remember to free pte */
@ -189,6 +189,25 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
return 0;
}
int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
const char *name, disk_partition_t *info)
{
int ret;
int i;
for (i = 1; i < GPT_ENTRY_NUMBERS; i++) {
ret = get_partition_info_efi(dev_desc, i, info);
if (ret != 0) {
/* no more entries in table */
return -1;
}
if (strcmp(name, (const char *)info->name) == 0) {
/* matched */
return 0;
}
}
return -2;
}
int test_part_efi(block_dev_desc_t * dev_desc)
{
ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz);

11
include/part.h
View File

@ -180,6 +180,17 @@ int test_part_amiga (block_dev_desc_t *dev_desc);
#include <part_efi.h>
/* disk/part_efi.c */
int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partition_t *info);
/**
* get_partition_info_efi_by_name() - Find the specified GPT partition table entry
*
* @param dev_desc - block device descriptor
* @param gpt_name - the specified table entry name
* @param info - returns the disk partition info
*
* @return - '0' on match, '-1' on no match, otherwise error
*/
int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
const char *name, disk_partition_t *info);
void print_part_efi (block_dev_desc_t *dev_desc);
int test_part_efi (block_dev_desc_t *dev_desc);