[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/util-linux/fdisk_gpt.c b/ap/app/busybox/src/util-linux/fdisk_gpt.c
new file mode 100644
index 0000000..d43d9c7
--- /dev/null
+++ b/ap/app/busybox/src/util-linux/fdisk_gpt.c
@@ -0,0 +1,195 @@
+#if ENABLE_FEATURE_GPT_LABEL
+/*
+ * Copyright (C) 2010 Kevin Cernekee <cernekee@gmail.com>
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+
+#define GPT_MAGIC 0x5452415020494645ULL
+enum {
+ LEGACY_GPT_TYPE = 0xee,
+ GPT_MAX_PARTS = 256,
+ GPT_MAX_PART_ENTRY_LEN = 4096,
+ GUID_LEN = 16,
+};
+
+typedef struct {
+ uint64_t magic;
+ uint32_t revision;
+ uint32_t hdr_size;
+ uint32_t hdr_crc32;
+ uint32_t reserved;
+ uint64_t current_lba;
+ uint64_t backup_lba;
+ uint64_t first_usable_lba;
+ uint64_t last_usable_lba;
+ uint8_t disk_guid[GUID_LEN];
+ uint64_t first_part_lba;
+ uint32_t n_parts;
+ uint32_t part_entry_len;
+ uint32_t part_array_crc32;
+} gpt_header;
+
+typedef struct {
+ uint8_t type_guid[GUID_LEN];
+ uint8_t part_guid[GUID_LEN];
+ uint64_t lba_start;
+ uint64_t lba_end;
+ uint64_t flags;
+ uint16_t name[36];
+} gpt_partition;
+
+static gpt_header *gpt_hdr;
+
+static char *part_array;
+static unsigned int n_parts;
+static unsigned int part_array_len;
+static unsigned int part_entry_len;
+
+static inline gpt_partition *
+gpt_part(int i)
+{
+ if (i >= n_parts) {
+ return NULL;
+ }
+ return (gpt_partition *)&part_array[i * part_entry_len];
+}
+
+static uint32_t
+gpt_crc32(void *buf, int len)
+{
+ return ~crc32_block_endian0(0xffffffff, buf, len, global_crc32_table);
+}
+
+static void
+gpt_print_guid(uint8_t *buf)
+{
+ printf(
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ buf[3], buf[2], buf[1], buf[0],
+ buf[5], buf[4],
+ buf[7], buf[6],
+ buf[8], buf[9],
+ buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
+}
+
+/* TODO: real unicode support */
+static void
+gpt_print_wide(uint16_t *s, int max_len)
+{
+ int i = 0;
+
+ while (i < max_len) {
+ if (*s == 0)
+ return;
+ fputc(*s, stdout);
+ s++;
+ }
+}
+
+static void
+gpt_list_table(int xtra UNUSED_PARAM)
+{
+ int i;
+ char numstr6[6];
+
+ numstr6[5] = '\0';
+
+ smart_ulltoa5(total_number_of_sectors, numstr6, " KMGTPEZY");
+ printf("Disk %s: %llu sectors, %s\n", disk_device,
+ (unsigned long long)total_number_of_sectors,
+ numstr6);
+ printf("Logical sector size: %u\n", sector_size);
+ printf("Disk identifier (GUID): ");
+ gpt_print_guid(gpt_hdr->disk_guid);
+ printf("\nPartition table holds up to %u entries\n",
+ (int)SWAP_LE32(gpt_hdr->n_parts));
+ printf("First usable sector is %llu, last usable sector is %llu\n\n",
+ (unsigned long long)SWAP_LE64(gpt_hdr->first_usable_lba),
+ (unsigned long long)SWAP_LE64(gpt_hdr->last_usable_lba));
+
+ printf("Number Start (sector) End (sector) Size Code Name\n");
+ for (i = 0; i < n_parts; i++) {
+ gpt_partition *p = gpt_part(i);
+ if (p->lba_start) {
+ smart_ulltoa5(1 + SWAP_LE64(p->lba_end) - SWAP_LE64(p->lba_start),
+ numstr6, " KMGTPEZY");
+ printf("%4u %15llu %15llu %11s %04x ",
+ i + 1,
+ (unsigned long long)SWAP_LE64(p->lba_start),
+ (unsigned long long)SWAP_LE64(p->lba_end),
+ numstr6,
+ 0x0700 /* FIXME */);
+ gpt_print_wide(p->name, 18);
+ printf("\n");
+ }
+ }
+}
+
+static int
+check_gpt_label(void)
+{
+ struct partition *first = pt_offset(MBRbuffer, 0);
+ struct pte pe;
+ uint32_t crc;
+
+ /* LBA 0 contains the legacy MBR */
+
+ if (!valid_part_table_flag(MBRbuffer)
+ || first->sys_ind != LEGACY_GPT_TYPE
+ ) {
+ current_label_type = 0;
+ return 0;
+ }
+
+ /* LBA 1 contains the GPT header */
+
+ read_pte(&pe, 1);
+ gpt_hdr = (void *)pe.sectorbuffer;
+
+ if (gpt_hdr->magic != SWAP_LE64(GPT_MAGIC)) {
+ current_label_type = 0;
+ return 0;
+ }
+
+ if (!global_crc32_table) {
+ global_crc32_table = crc32_filltable(NULL, 0);
+ }
+
+ crc = SWAP_LE32(gpt_hdr->hdr_crc32);
+ gpt_hdr->hdr_crc32 = 0;
+ if (gpt_crc32(gpt_hdr, SWAP_LE32(gpt_hdr->hdr_size)) != crc) {
+ /* FIXME: read the backup table */
+ puts("\nwarning: GPT header CRC is invalid\n");
+ }
+
+ n_parts = SWAP_LE32(gpt_hdr->n_parts);
+ part_entry_len = SWAP_LE32(gpt_hdr->part_entry_len);
+ if (n_parts > GPT_MAX_PARTS
+ || part_entry_len > GPT_MAX_PART_ENTRY_LEN
+ || SWAP_LE32(gpt_hdr->hdr_size) > sector_size
+ ) {
+ puts("\nwarning: unable to parse GPT disklabel\n");
+ current_label_type = 0;
+ return 0;
+ }
+
+ part_array_len = n_parts * part_entry_len;
+ part_array = xmalloc(part_array_len);
+ seek_sector(SWAP_LE64(gpt_hdr->first_part_lba));
+ if (full_read(dev_fd, part_array, part_array_len) != part_array_len) {
+ fdisk_fatal(unable_to_read);
+ }
+
+ if (gpt_crc32(part_array, part_array_len) != gpt_hdr->part_array_crc32) {
+ /* FIXME: read the backup table */
+ puts("\nwarning: GPT array CRC is invalid\n");
+ }
+
+ puts("Found valid GPT with protective MBR; using GPT\n");
+
+ current_label_type = LABEL_GPT;
+ return 1;
+}
+
+#endif /* GPT_LABEL */