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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * cmd_gpt.c -- GPT (GUID Partition Table) handling command
- *
- * Copyright (C) 2015
- * Lukasz Majewski <l.majewski@majess.pl>
- *
- * Copyright (C) 2012 Samsung Electronics
- * author: Lukasz Majewski <l.majewski@samsung.com>
- * author: Piotr Wilczek <p.wilczek@samsung.com>
- */
- #include <common.h>
- #include <blk.h>
- #include <env.h>
- #include <log.h>
- #include <malloc.h>
- #include <command.h>
- #include <part.h>
- #include <part_efi.h>
- #include <part.h>
- #include <exports.h>
- #include <uuid.h>
- #include <linux/ctype.h>
- #include <div64.h>
- #include <memalign.h>
- #include <linux/compat.h>
- #include <linux/err.h>
- #include <linux/sizes.h>
- #include <stdlib.h>
- static LIST_HEAD(disk_partitions);
- /**
- * extract_env(): Expand env name from string format '&{env_name}'
- * and return pointer to the env (if the env is set)
- *
- * @param str - pointer to string
- * @param env - pointer to pointer to extracted env
- *
- * @return - zero on successful expand and env is set
- */
- static int extract_env(const char *str, char **env)
- {
- int ret = -1;
- char *e, *s;
- #ifdef CONFIG_RANDOM_UUID
- char uuid_str[UUID_STR_LEN + 1];
- #endif
- if (!str || strlen(str) < 4)
- return -1;
- if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
- return -1;
- s = strdup(str);
- if (s == NULL)
- return -1;
- memset(s + strlen(s) - 1, '\0', 1);
- memmove(s, s + 2, strlen(s) - 1);
- e = env_get(s);
- if (e == NULL) {
- #ifdef CONFIG_RANDOM_UUID
- debug("%s unset. ", str);
- gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID);
- env_set(s, uuid_str);
- e = env_get(s);
- if (e) {
- debug("Set to random.\n");
- ret = 0;
- } else {
- debug("Can't get random UUID.\n");
- }
- #else
- debug("%s unset.\n", str);
- #endif
- } else {
- debug("%s get from environment.\n", str);
- ret = 0;
- }
- *env = e;
- free(s);
- return ret;
- }
- /**
- * extract_val(): Extract value from a key=value pair list (comma separated).
- * Only value for the given key is returend.
- * Function allocates memory for the value, remember to free!
- *
- * @param str - pointer to string with key=values pairs
- * @param key - pointer to the key to search for
- *
- * @return - pointer to allocated string with the value
- */
- static char *extract_val(const char *str, const char *key)
- {
- char *v, *k;
- char *s, *strcopy;
- char *new = NULL;
- strcopy = strdup(str);
- if (strcopy == NULL)
- return NULL;
- s = strcopy;
- while (s) {
- v = strsep(&s, ",");
- if (!v)
- break;
- k = strsep(&v, "=");
- if (!k)
- break;
- if (strcmp(k, key) == 0) {
- new = strdup(v);
- break;
- }
- }
- free(strcopy);
- return new;
- }
- /**
- * found_key(): Found key without value in parameter list (comma separated).
- *
- * @param str - pointer to string with key
- * @param key - pointer to the key to search for
- *
- * @return - true on found key
- */
- static bool found_key(const char *str, const char *key)
- {
- char *k;
- char *s, *strcopy;
- bool result = false;
- strcopy = strdup(str);
- if (!strcopy)
- return NULL;
- s = strcopy;
- while (s) {
- k = strsep(&s, ",");
- if (!k)
- break;
- if (strcmp(k, key) == 0) {
- result = true;
- break;
- }
- }
- free(strcopy);
- return result;
- }
- 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);
- /* 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("uuid=;") + UUID_STR_LEN + 1);
- /* for the terminating null */
- partlistlen++;
- debug("Length of partitions_list is %d for %d partitions\n", partlistlen,
- numparts);
- return partlistlen;
- }
- #ifdef CONFIG_CMD_GPT_RENAME
- static void del_gpt_info(void)
- {
- struct list_head *pos = &disk_partitions;
- struct disk_part *curr;
- while (!list_empty(pos)) {
- curr = list_entry(pos->next, struct disk_part, list);
- list_del(pos->next);
- free(curr);
- }
- }
- static struct disk_part *allocate_disk_part(struct disk_partition *info,
- int partnum)
- {
- struct disk_part *newpart;
- newpart = calloc(1, sizeof(struct disk_part));
- if (!newpart)
- return ERR_PTR(-ENOMEM);
- newpart->gpt_part_info.start = info->start;
- newpart->gpt_part_info.size = info->size;
- newpart->gpt_part_info.blksz = info->blksz;
- strncpy((char *)newpart->gpt_part_info.name, (const char *)info->name,
- PART_NAME_LEN);
- newpart->gpt_part_info.name[PART_NAME_LEN - 1] = '\0';
- strncpy((char *)newpart->gpt_part_info.type, (const char *)info->type,
- PART_TYPE_LEN);
- newpart->gpt_part_info.type[PART_TYPE_LEN - 1] = '\0';
- newpart->gpt_part_info.bootable = info->bootable;
- #ifdef CONFIG_PARTITION_UUIDS
- strncpy(newpart->gpt_part_info.uuid, (const char *)info->uuid,
- UUID_STR_LEN);
- /* UUID_STR_LEN is correct, as uuid[]'s length is UUID_STR_LEN+1 chars */
- newpart->gpt_part_info.uuid[UUID_STR_LEN] = '\0';
- #endif
- newpart->partnum = partnum;
- return newpart;
- }
- static void prettyprint_part_size(char *sizestr, lbaint_t partsize,
- lbaint_t blksize)
- {
- unsigned long long partbytes, partmegabytes;
- partbytes = partsize * blksize;
- partmegabytes = lldiv(partbytes, SZ_1M);
- snprintf(sizestr, 16, "%lluMiB", partmegabytes);
- }
- static void print_gpt_info(void)
- {
- struct list_head *pos;
- struct disk_part *curr;
- char partstartstr[16];
- char partsizestr[16];
- list_for_each(pos, &disk_partitions) {
- curr = list_entry(pos, struct disk_part, list);
- prettyprint_part_size(partstartstr, curr->gpt_part_info.start,
- curr->gpt_part_info.blksz);
- prettyprint_part_size(partsizestr, curr->gpt_part_info.size,
- curr->gpt_part_info.blksz);
- printf("Partition %d:\n", curr->partnum);
- printf("Start %s, size %s\n", partstartstr, partsizestr);
- printf("Block size %lu, name %s\n", curr->gpt_part_info.blksz,
- curr->gpt_part_info.name);
- printf("Type %s, bootable %d\n", curr->gpt_part_info.type,
- curr->gpt_part_info.bootable & PART_BOOTABLE);
- #ifdef CONFIG_PARTITION_UUIDS
- printf("UUID %s\n", curr->gpt_part_info.uuid);
- #endif
- printf("\n");
- }
- }
- /*
- * create the string that upstream 'gpt write' command will accept as an
- * argument
- *
- * From doc/README.gpt, Format of partitions layout:
- * "uuid_disk=...;name=u-boot,size=60MiB,uuid=...;
- * name=kernel,size=60MiB,uuid=...;"
- * The fields 'name' and 'size' are mandatory for every partition.
- * The field 'start' is optional. The fields 'uuid' and 'uuid_disk'
- * are optional if CONFIG_RANDOM_UUID is enabled.
- */
- static int create_gpt_partitions_list(int numparts, const char *guid,
- char *partitions_list)
- {
- struct list_head *pos;
- struct disk_part *curr;
- char partstr[PART_NAME_LEN + 1];
- if (!partitions_list)
- return -EINVAL;
- strcpy(partitions_list, "uuid_disk=");
- strncat(partitions_list, guid, UUID_STR_LEN + 1);
- strcat(partitions_list, ";");
- list_for_each(pos, &disk_partitions) {
- curr = list_entry(pos, struct disk_part, list);
- strcat(partitions_list, "name=");
- strncat(partitions_list, (const char *)curr->gpt_part_info.name,
- PART_NAME_LEN + 1);
- sprintf(partstr, ",start=0x%llx",
- (unsigned long long)curr->gpt_part_info.start *
- curr->gpt_part_info.blksz);
- /* one extra byte for NULL */
- strncat(partitions_list, partstr, PART_NAME_LEN + 1);
- sprintf(partstr, ",size=0x%llx",
- (unsigned long long)curr->gpt_part_info.size *
- curr->gpt_part_info.blksz);
- strncat(partitions_list, partstr, PART_NAME_LEN + 1);
- strcat(partitions_list, ",uuid=");
- strncat(partitions_list, curr->gpt_part_info.uuid,
- UUID_STR_LEN + 1);
- strcat(partitions_list, ";");
- }
- return 0;
- }
- /*
- * read partition info into disk_partitions list where
- * it can be printed or modified
- */
- static int get_gpt_info(struct blk_desc *dev_desc)
- {
- /* start partition numbering at 1, as U-Boot does */
- int valid_parts = 0, p, ret;
- struct disk_partition info;
- struct disk_part *new_disk_part;
- /*
- * Always re-read partition info from device, in case
- * it has changed
- */
- INIT_LIST_HEAD(&disk_partitions);
- for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
- ret = part_get_info(dev_desc, p, &info);
- if (ret)
- continue;
- /* Add 1 here because counter is zero-based but p1 is
- the first partition */
- new_disk_part = allocate_disk_part(&info, valid_parts+1);
- if (IS_ERR(new_disk_part))
- goto out;
- list_add_tail(&new_disk_part->list, &disk_partitions);
- valid_parts++;
- }
- if (valid_parts == 0) {
- printf("** No valid partitions found **\n");
- goto out;
- }
- return valid_parts;
- out:
- if (valid_parts >= 1)
- del_gpt_info();
- return -ENODEV;
- }
- /* a wrapper to test get_gpt_info */
- static int do_get_gpt_info(struct blk_desc *dev_desc, char * const namestr)
- {
- int numparts;
- numparts = get_gpt_info(dev_desc);
- if (numparts > 0) {
- if (namestr) {
- char disk_guid[UUID_STR_LEN + 1];
- char *partitions_list;
- int partlistlen;
- int ret = -1;
- ret = get_disk_guid(dev_desc, disk_guid);
- if (ret < 0)
- return ret;
- partlistlen = calc_parts_list_len(numparts);
- partitions_list = malloc(partlistlen);
- if (!partitions_list) {
- del_gpt_info();
- return -ENOMEM;
- }
- memset(partitions_list, '\0', partlistlen);
- ret = create_gpt_partitions_list(numparts, disk_guid,
- partitions_list);
- if (ret < 0)
- printf("Error: Could not create partition list string!\n");
- else
- env_set(namestr, partitions_list);
- free(partitions_list);
- } else {
- print_gpt_info();
- }
- del_gpt_info();
- return 0;
- }
- return numparts;
- }
- #endif
- /**
- * set_gpt_info(): Fill partition information from string
- * function allocates memory, remember to free!
- *
- * @param dev_desc - pointer block device descriptor
- * @param str_part - pointer to string with partition information
- * @param str_disk_guid - pointer to pointer to allocated string with disk guid
- * @param partitions - pointer to pointer to allocated partitions array
- * @param parts_count - number of partitions
- *
- * @return - zero on success, otherwise error
- *
- */
- static int set_gpt_info(struct blk_desc *dev_desc,
- const char *str_part,
- char **str_disk_guid,
- struct disk_partition **partitions,
- u8 *parts_count)
- {
- char *tok, *str, *s;
- int i;
- char *val, *p;
- int p_count;
- struct disk_partition *parts;
- int errno = 0;
- uint64_t size_ll, start_ll;
- lbaint_t offset = 0;
- int max_str_part = calc_parts_list_len(MAX_SEARCH_PARTITIONS);
- debug("%s: lba num: 0x%x %d\n", __func__,
- (unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba);
- if (str_part == NULL)
- return -1;
- str = strdup(str_part);
- if (str == NULL)
- return -ENOMEM;
- /* extract disk guid */
- s = str;
- val = extract_val(str, "uuid_disk");
- if (!val) {
- #ifdef CONFIG_RANDOM_UUID
- *str_disk_guid = malloc(UUID_STR_LEN + 1);
- if (*str_disk_guid == NULL)
- return -ENOMEM;
- gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
- #else
- free(str);
- return -2;
- #endif
- } else {
- val = strsep(&val, ";");
- if (extract_env(val, &p))
- p = val;
- *str_disk_guid = strdup(p);
- free(val);
- /* Move s to first partition */
- strsep(&s, ";");
- }
- if (s == NULL) {
- printf("Error: is the partitions string NULL-terminated?\n");
- return -EINVAL;
- }
- if (strnlen(s, max_str_part) == 0)
- return -3;
- i = strnlen(s, max_str_part) - 1;
- if (s[i] == ';')
- s[i] = '\0';
- /* calculate expected number of partitions */
- p_count = 1;
- p = s;
- while (*p) {
- if (*p++ == ';')
- p_count++;
- }
- /* allocate memory for partitions */
- parts = calloc(sizeof(struct disk_partition), p_count);
- if (parts == NULL)
- return -ENOMEM;
- /* retrieve partitions data from string */
- for (i = 0; i < p_count; i++) {
- tok = strsep(&s, ";");
- if (tok == NULL)
- break;
- /* uuid */
- val = extract_val(tok, "uuid");
- if (!val) {
- /* 'uuid' is optional if random uuid's are enabled */
- #ifdef CONFIG_RANDOM_UUID
- gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD);
- #else
- errno = -4;
- goto err;
- #endif
- } else {
- if (extract_env(val, &p))
- p = val;
- if (strnlen(p, max_str_part) >= sizeof(parts[i].uuid)) {
- printf("Wrong uuid format for partition %d\n", i);
- errno = -4;
- goto err;
- }
- strncpy((char *)parts[i].uuid, p, max_str_part);
- free(val);
- }
- #ifdef CONFIG_PARTITION_TYPE_GUID
- /* guid */
- val = extract_val(tok, "type");
- if (val) {
- /* 'type' is optional */
- if (extract_env(val, &p))
- p = val;
- if (strnlen(p, max_str_part) >= sizeof(parts[i].type_guid)) {
- printf("Wrong type guid format for partition %d\n",
- i);
- errno = -4;
- goto err;
- }
- strncpy((char *)parts[i].type_guid, p, max_str_part);
- free(val);
- }
- #endif
- /* name */
- val = extract_val(tok, "name");
- if (!val) { /* name is mandatory */
- errno = -4;
- goto err;
- }
- if (extract_env(val, &p))
- p = val;
- if (strnlen(p, max_str_part) >= sizeof(parts[i].name)) {
- errno = -4;
- goto err;
- }
- strncpy((char *)parts[i].name, p, max_str_part);
- free(val);
- /* size */
- val = extract_val(tok, "size");
- if (!val) { /* 'size' is mandatory */
- errno = -4;
- goto err;
- }
- if (extract_env(val, &p))
- p = val;
- if ((strcmp(p, "-") == 0)) {
- /* Let part efi module to auto extend the size */
- parts[i].size = 0;
- } else {
- size_ll = ustrtoull(p, &p, 0);
- parts[i].size = lldiv(size_ll, dev_desc->blksz);
- }
- free(val);
- /* start address */
- val = extract_val(tok, "start");
- if (val) { /* start address is optional */
- if (extract_env(val, &p))
- p = val;
- start_ll = ustrtoull(p, &p, 0);
- parts[i].start = lldiv(start_ll, dev_desc->blksz);
- free(val);
- }
- offset += parts[i].size + parts[i].start;
- /* bootable */
- if (found_key(tok, "bootable"))
- parts[i].bootable = PART_BOOTABLE;
- }
- *parts_count = p_count;
- *partitions = parts;
- free(str);
- return 0;
- err:
- free(str);
- free(*str_disk_guid);
- free(parts);
- return errno;
- }
- static int gpt_default(struct blk_desc *blk_dev_desc, const char *str_part)
- {
- int ret;
- char *str_disk_guid;
- u8 part_count = 0;
- struct disk_partition *partitions = NULL;
- /* fill partitions */
- ret = set_gpt_info(blk_dev_desc, str_part,
- &str_disk_guid, &partitions, &part_count);
- if (ret) {
- if (ret == -1)
- printf("No partition list provided\n");
- if (ret == -2)
- printf("Missing disk guid\n");
- if ((ret == -3) || (ret == -4))
- printf("Partition list incomplete\n");
- return -1;
- }
- /* save partitions layout to disk */
- ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
- free(str_disk_guid);
- free(partitions);
- return ret;
- }
- static int gpt_verify(struct blk_desc *blk_dev_desc, const char *str_part)
- {
- ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1,
- blk_dev_desc->blksz);
- struct disk_partition *partitions = NULL;
- gpt_entry *gpt_pte = NULL;
- char *str_disk_guid;
- u8 part_count = 0;
- int ret = 0;
- /* fill partitions */
- ret = set_gpt_info(blk_dev_desc, str_part,
- &str_disk_guid, &partitions, &part_count);
- if (ret) {
- if (ret == -1) {
- printf("No partition list provided - only basic check\n");
- ret = gpt_verify_headers(blk_dev_desc, gpt_head,
- &gpt_pte);
- goto out;
- }
- if (ret == -2)
- printf("Missing disk guid\n");
- if ((ret == -3) || (ret == -4))
- printf("Partition list incomplete\n");
- return -1;
- }
- /* Check partition layout with provided pattern */
- ret = gpt_verify_partitions(blk_dev_desc, partitions, part_count,
- gpt_head, &gpt_pte);
- free(str_disk_guid);
- free(partitions);
- out:
- free(gpt_pte);
- return ret;
- }
- /**
- * gpt_enumerate() - Enumerate partition names into environment variable.
- *
- * Enumerate partition names. Partition names are stored in gpt_partition_list
- * environment variable. Each partition name is delimited by space.
- *
- * @desc: block device descriptor
- *
- * @Return: '0' on success and -ve error on failure
- */
- static int gpt_enumerate(struct blk_desc *desc)
- {
- struct part_driver *first_drv, *part_drv;
- int str_len = 0, tmp_len;
- char part_list[2048];
- int n_drvs;
- char *ptr;
- part_list[0] = 0;
- n_drvs = part_driver_get_count();
- if (!n_drvs) {
- printf("Failed to get partition driver count\n");
- return -ENOENT;
- }
- first_drv = part_driver_get_first();
- for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
- struct disk_partition pinfo;
- int ret;
- int i;
- for (i = 1; i < part_drv->max_entries; i++) {
- ret = part_drv->get_info(desc, i, &pinfo);
- if (ret) {
- /* no more entries in table */
- break;
- }
- ptr = &part_list[str_len];
- tmp_len = strlen((const char *)pinfo.name);
- str_len += tmp_len;
- /* +1 for space */
- str_len++;
- if (str_len > sizeof(part_list)) {
- printf("Error insufficient memory\n");
- return -ENOMEM;
- }
- strcpy(ptr, (const char *)pinfo.name);
- /* One byte for space(" ") delimiter */
- ptr[tmp_len] = ' ';
- }
- }
- if (*part_list)
- part_list[strlen(part_list) - 1] = 0;
- debug("setenv gpt_partition_list %s\n", part_list);
- return env_set("gpt_partition_list", part_list);
- }
- /**
- * gpt_setenv_part_variables() - setup partition environmental variables
- *
- * Setup the gpt_partition_name, gpt_partition_entry, gpt_partition_addr
- * and gpt_partition_size environment variables.
- *
- * @pinfo: pointer to disk partition
- * @i: partition entry
- *
- * @Return: '0' on success and -ENOENT on failure
- */
- static int gpt_setenv_part_variables(struct disk_partition *pinfo, int i)
- {
- int ret;
- ret = env_set_hex("gpt_partition_addr", pinfo->start);
- if (ret)
- goto fail;
- ret = env_set_hex("gpt_partition_size", pinfo->size);
- if (ret)
- goto fail;
- ret = env_set_ulong("gpt_partition_entry", i);
- if (ret)
- goto fail;
- ret = env_set("gpt_partition_name", (const char *)pinfo->name);
- if (ret)
- goto fail;
- return 0;
- fail:
- return -ENOENT;
- }
- /**
- * gpt_setenv() - Dynamically setup environment variables.
- *
- * Dynamically setup environment variables for name, index, offset and size
- * for partition in GPT table after running "gpt setenv" for a partition name.
- *
- * @desc: block device descriptor
- * @name: partition name
- *
- * @Return: '0' on success and -ve err on failure
- */
- static int gpt_setenv(struct blk_desc *desc, const char *name)
- {
- struct part_driver *first_drv, *part_drv;
- int n_drvs;
- int ret = -1;
- n_drvs = part_driver_get_count();
- if (!n_drvs) {
- printf("Failed to get partition driver count\n");
- goto fail;
- }
- first_drv = part_driver_get_first();
- for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
- struct disk_partition pinfo;
- int i;
- for (i = 1; i < part_drv->max_entries; i++) {
- ret = part_drv->get_info(desc, i, &pinfo);
- if (ret) {
- /* no more entries in table */
- break;
- }
- if (!strcmp(name, (const char *)pinfo.name)) {
- /* match found, setup environment variables */
- ret = gpt_setenv_part_variables(&pinfo, i);
- if (ret)
- goto fail;
- return 0;
- }
- }
- }
- fail:
- return ret;
- }
- static int do_disk_guid(struct blk_desc *dev_desc, char * const namestr)
- {
- int ret;
- char disk_guid[UUID_STR_LEN + 1];
- ret = get_disk_guid(dev_desc, disk_guid);
- if (ret < 0)
- return CMD_RET_FAILURE;
- if (namestr)
- env_set(namestr, disk_guid);
- else
- printf("%s\n", disk_guid);
- return ret;
- }
- #ifdef CONFIG_CMD_GPT_RENAME
- static int do_rename_gpt_parts(struct blk_desc *dev_desc, char *subcomm,
- char *name1, char *name2)
- {
- struct list_head *pos;
- struct disk_part *curr;
- struct disk_partition *new_partitions = NULL;
- char disk_guid[UUID_STR_LEN + 1];
- char *partitions_list, *str_disk_guid = NULL;
- u8 part_count = 0;
- int partlistlen, ret, numparts = 0, partnum, i = 1, ctr1 = 0, ctr2 = 0;
- if ((subcomm == NULL) || (name1 == NULL) || (name2 == NULL) ||
- (strcmp(subcomm, "swap") && (strcmp(subcomm, "rename"))))
- return -EINVAL;
- ret = get_disk_guid(dev_desc, disk_guid);
- if (ret < 0)
- return ret;
- /*
- * Allocates disk_partitions, requiring matching call to del_gpt_info()
- * if successful.
- */
- numparts = get_gpt_info(dev_desc);
- if (numparts <= 0)
- return numparts ? numparts : -ENODEV;
- partlistlen = calc_parts_list_len(numparts);
- partitions_list = malloc(partlistlen);
- if (!partitions_list) {
- del_gpt_info();
- return -ENOMEM;
- }
- memset(partitions_list, '\0', partlistlen);
- ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
- if (ret < 0) {
- free(partitions_list);
- return ret;
- }
- /*
- * Uncomment the following line to print a string that 'gpt write'
- * or 'gpt verify' will accept as input.
- */
- debug("OLD partitions_list is %s with %u chars\n", partitions_list,
- (unsigned)strlen(partitions_list));
- /* set_gpt_info allocates new_partitions and str_disk_guid */
- ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
- &new_partitions, &part_count);
- if (ret < 0)
- goto out;
- if (!strcmp(subcomm, "swap")) {
- if ((strlen(name1) > PART_NAME_LEN) || (strlen(name2) > PART_NAME_LEN)) {
- printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
- ret = -EINVAL;
- goto out;
- }
- list_for_each(pos, &disk_partitions) {
- curr = list_entry(pos, struct disk_part, list);
- if (!strcmp((char *)curr->gpt_part_info.name, name1)) {
- strcpy((char *)curr->gpt_part_info.name, name2);
- ctr1++;
- } else if (!strcmp((char *)curr->gpt_part_info.name, name2)) {
- strcpy((char *)curr->gpt_part_info.name, name1);
- ctr2++;
- }
- }
- if ((ctr1 + ctr2 < 2) || (ctr1 != ctr2)) {
- printf("Cannot swap partition names except in pairs.\n");
- ret = -EINVAL;
- goto out;
- }
- } else { /* rename */
- if (strlen(name2) > PART_NAME_LEN) {
- printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
- ret = -EINVAL;
- goto out;
- }
- partnum = (int)simple_strtol(name1, NULL, 10);
- if ((partnum < 0) || (partnum > numparts)) {
- printf("Illegal partition number %s\n", name1);
- ret = -EINVAL;
- goto out;
- }
- ret = part_get_info(dev_desc, partnum, new_partitions);
- if (ret < 0)
- goto out;
- /* U-Boot partition numbering starts at 1 */
- list_for_each(pos, &disk_partitions) {
- curr = list_entry(pos, struct disk_part, list);
- if (i == partnum) {
- strcpy((char *)curr->gpt_part_info.name, name2);
- break;
- }
- i++;
- }
- }
- ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
- if (ret < 0)
- goto out;
- debug("NEW partitions_list is %s with %u chars\n", partitions_list,
- (unsigned)strlen(partitions_list));
- ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
- &new_partitions, &part_count);
- /*
- * Even though valid pointers are here passed into set_gpt_info(),
- * it mallocs again, and there's no way to tell which failed.
- */
- if (ret < 0)
- goto out;
- debug("Writing new partition table\n");
- ret = gpt_restore(dev_desc, disk_guid, new_partitions, numparts);
- if (ret < 0) {
- printf("Writing new partition table failed\n");
- goto out;
- }
- debug("Reading back new partition table\n");
- /*
- * Empty the existing disk_partitions list, as otherwise the memory in
- * the original list is unreachable.
- */
- del_gpt_info();
- numparts = get_gpt_info(dev_desc);
- if (numparts <= 0) {
- ret = numparts ? numparts : -ENODEV;
- goto out;
- }
- printf("new partition table with %d partitions is:\n", numparts);
- print_gpt_info();
- out:
- del_gpt_info();
- #ifdef CONFIG_RANDOM_UUID
- free(str_disk_guid);
- #endif
- free(new_partitions);
- free(partitions_list);
- return ret;
- }
- #endif
- /**
- * do_gpt(): Perform GPT operations
- *
- * @param cmdtp - command name
- * @param flag
- * @param argc
- * @param argv
- *
- * @return zero on success; otherwise error
- */
- static int do_gpt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
- {
- int ret = CMD_RET_SUCCESS;
- int dev = 0;
- char *ep;
- struct blk_desc *blk_dev_desc = NULL;
- #ifndef CONFIG_CMD_GPT_RENAME
- if (argc < 4 || argc > 5)
- #else
- if (argc < 4 || argc > 6)
- #endif
- return CMD_RET_USAGE;
- dev = (int)dectoul(argv[3], &ep);
- if (!ep || ep[0] != '\0') {
- printf("'%s' is not a number\n", argv[3]);
- return CMD_RET_USAGE;
- }
- blk_dev_desc = blk_get_dev(argv[2], dev);
- if (!blk_dev_desc) {
- printf("%s: %s dev %d NOT available\n",
- __func__, argv[2], dev);
- return CMD_RET_FAILURE;
- }
- if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
- printf("Writing GPT: ");
- ret = gpt_default(blk_dev_desc, argv[4]);
- } else if ((strcmp(argv[1], "verify") == 0)) {
- ret = gpt_verify(blk_dev_desc, argv[4]);
- printf("Verify GPT: ");
- } else if ((strcmp(argv[1], "setenv") == 0)) {
- ret = gpt_setenv(blk_dev_desc, argv[4]);
- } else if ((strcmp(argv[1], "enumerate") == 0)) {
- ret = gpt_enumerate(blk_dev_desc);
- } else if (strcmp(argv[1], "guid") == 0) {
- ret = do_disk_guid(blk_dev_desc, argv[4]);
- #ifdef CONFIG_CMD_GPT_RENAME
- } else if (strcmp(argv[1], "read") == 0) {
- ret = do_get_gpt_info(blk_dev_desc, (argc == 5) ? argv[4] : NULL);
- } else if ((strcmp(argv[1], "swap") == 0) ||
- (strcmp(argv[1], "rename") == 0)) {
- ret = do_rename_gpt_parts(blk_dev_desc, argv[1], argv[4], argv[5]);
- #endif
- } else {
- return CMD_RET_USAGE;
- }
- if (ret) {
- printf("error!\n");
- return CMD_RET_FAILURE;
- }
- printf("success!\n");
- return CMD_RET_SUCCESS;
- }
- U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
- "GUID Partition Table",
- "<command> <interface> <dev> <partitions_list>\n"
- " - GUID partition table restoration and validity check\n"
- " Restore or verify GPT information on a device connected\n"
- " to interface\n"
- " Example usage:\n"
- " gpt write mmc 0 $partitions\n"
- " - write the GPT to device\n"
- " gpt verify mmc 0 $partitions\n"
- " - verify the GPT on device against $partitions\n"
- " gpt setenv mmc 0 $name\n"
- " - setup environment variables for partition $name:\n"
- " gpt_partition_addr, gpt_partition_size,\n"
- " gpt_partition_name, gpt_partition_entry\n"
- " gpt enumerate mmc 0\n"
- " - store list of partitions to gpt_partition_list environment variable\n"
- " read <interface> <dev>\n"
- " - read GPT into a data structure for manipulation\n"
- " gpt guid <interface> <dev>\n"
- " - print disk GUID\n"
- " gpt guid <interface> <dev> <varname>\n"
- " - set environment variable to disk GUID\n"
- " Example usage:\n"
- " gpt guid mmc 0\n"
- " gpt guid mmc 0 varname\n"
- #ifdef CONFIG_CMD_GPT_RENAME
- "gpt partition renaming commands:\n"
- " gpt read <interface> <dev> [<varname>]\n"
- " - read GPT into a data structure for manipulation\n"
- " - read GPT partitions into environment variable\n"
- " gpt swap <interface> <dev> <name1> <name2>\n"
- " - change all partitions named name1 to name2\n"
- " and vice-versa\n"
- " gpt rename <interface> <dev> <part> <name>\n"
- " - rename the specified partition\n"
- " Example usage:\n"
- " gpt swap mmc 0 foo bar\n"
- " gpt rename mmc 0 3 foo\n"
- #endif
- );
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