diff options
Diffstat (limited to 'block/partitions/efi.c')
| -rw-r--r-- | block/partitions/efi.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/block/partitions/efi.c b/block/partitions/efi.c index db2fef7dfc47..b64bfdd4326c 100644 --- a/block/partitions/efi.c +++ b/block/partitions/efi.c @@ -657,6 +657,31 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt, } /** + * utf16_le_to_7bit(): Naively converts a UTF-16LE string to 7-bit ASCII characters + * @in: input UTF-16LE string + * @size: size of the input string + * @out: output string ptr, should be capable to store @size+1 characters + * + * Description: Converts @size UTF16-LE symbols from @in string to 7-bit + * ASCII characters and stores them to @out. Adds trailing zero to @out array. + */ +static void utf16_le_to_7bit(const __le16 *in, unsigned int size, u8 *out) +{ + unsigned int i = 0; + + out[size] = 0; + + while (i < size) { + u8 c = le16_to_cpu(in[i]) & 0xff; + + if (c && !isprint(c)) + c = '!'; + out[i] = c; + i++; + } +} + +/** * efi_partition(struct parsed_partitions *state) * @state: disk parsed partitions * @@ -692,7 +717,6 @@ int efi_partition(struct parsed_partitions *state) for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) { struct partition_meta_info *info; - unsigned label_count = 0; unsigned label_max; u64 start = le64_to_cpu(ptes[i].starting_lba); u64 size = le64_to_cpu(ptes[i].ending_lba) - @@ -713,14 +737,7 @@ int efi_partition(struct parsed_partitions *state) /* Naively convert UTF16-LE to 7 bits. */ label_max = min(ARRAY_SIZE(info->volname) - 1, ARRAY_SIZE(ptes[i].partition_name)); - info->volname[label_max] = 0; - while (label_count < label_max) { - u8 c = ptes[i].partition_name[label_count] & 0xff; - if (c && !isprint(c)) - c = '!'; - info->volname[label_count] = c; - label_count++; - } + utf16_le_to_7bit(ptes[i].partition_name, label_max, info->volname); state->parts[i + 1].has_info = true; } kfree(ptes); |