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 ---
disk/part_efi.c | 21 ++++++++++++++++++++- include/part.h | 11 +++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/disk/part_efi.c b/disk/part_efi.c index 78a3782..612f092 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -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); diff --git a/include/part.h b/include/part.h index f2c8c64..a496a4a 100644 --- a/include/part.h +++ b/include/part.h @@ -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);