From 50970839712dda35399e2fa83fe818df9354d618 Mon Sep 17 00:00:00 2001 From: Richard Retanubun <RichardRetanubun@RuggedCom.com> Date: Mon, 26 Jan 2009 08:45:14 -0500 Subject: [PATCH] part_efi: Fix partition size calculation due to inclusive ending LBA. The ending LBA is inclusive. Hence, the partition size should be ((ending-LBA + 1) - starting-LBA) to get the proper partition size. This is confirmed against the results from the parted tool. (e.g. use parted /dev/sda -s unit S print) and observe the size. Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com> --- disk/part_efi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/disk/part_efi.c b/disk/part_efi.c index cc188ee8991..d8a81115c5a 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -163,7 +163,9 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part, /* The ulong casting limits the maximum disk size to 2 TB */ info->start = (ulong) le64_to_int((*pgpt_pte)[part - 1].starting_lba); - info->size = (ulong) le64_to_int((*pgpt_pte)[part - 1].ending_lba) - info->start; + /* The ending LBA is inclusive, to calculate size, add 1 to it */ + info->size = ((ulong)le64_to_int((*pgpt_pte)[part - 1].ending_lba) + 1) + - info->start; info->blksz = GPT_BLOCK_SIZE; sprintf((char *)info->name, "%s%d\n", GPT_ENTRY_NAME, part); -- GitLab