diff options
| -rw-r--r-- | cmd/gpt.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/cmd/gpt.c b/cmd/gpt.c index 96cd8efaafb..c404785c1d1 100644 --- a/cmd/gpt.c +++ b/cmd/gpt.c @@ -162,26 +162,32 @@ static bool found_key(const char *str, const char *key) return result; } +/** + * calc_parts_list_len() - get size of partition table description + * + * @numparts: number of partitions + * Return: string size including terminating NUL + */ static int calc_parts_list_len(int numparts) { - int partlistlen = UUID_STR_LEN + 1 + strlen("uuid_disk="); - /* for the comma */ - partlistlen++; - - /* per-partition additions; numparts starts at 1, so this should be correct */ - partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN + 1); + /* number of hexadecimal digits of the lbaint_t representation */ + const int lbaint_size = 2 * sizeof(lbaint_t); + int partlistlen; + + /* media description including terminating NUL */ + partlistlen = strlen("uuid_disk=;") + UUID_STR_LEN + 1; + /* per-partition descriptions; numparts */ + partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN); /* see part.h for definition of struct disk_partition */ - partlistlen += numparts * (strlen("start=MiB,") + sizeof(lbaint_t) + 1); - partlistlen += numparts * (strlen("size=MiB,") + sizeof(lbaint_t) + 1); + partlistlen += numparts * (strlen("start=0x,") + lbaint_size); + partlistlen += numparts * (strlen("size=0x,") + lbaint_size); #ifdef CONFIG_PARTITION_TYPE_GUID partlistlen += numparts * (strlen("type=,") + UUID_STR_LEN + 1); #endif - partlistlen += numparts * strlen("bootable,"); - partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN + 1); - /* for the terminating null */ - partlistlen++; - debug("Length of partitions_list is %d for %d partitions\n", partlistlen, - numparts); + if (IS_ENABLED(CONFIG_PARTITION_UUIDS)) + partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN); + debug("Length of partitions_list is %d for %d partitions\n", + partlistlen, numparts); return partlistlen; } |