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![Patrick Delaunay](/assets/img/avatar_default.png)
don't use prettyprint_part_size() in create_gpt_partitions_list() that avoid to align offset and size to 1 MiB and increase precision for start and size. This patch avoid the risk to change partition size and lost data during rename or swap. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
901 lines
22 KiB
C
901 lines
22 KiB
C
/*
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* cmd_gpt.c -- GPT (GUID Partition Table) handling command
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*
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* Copyright (C) 2015
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* Lukasz Majewski <l.majewski@majess.pl>
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*
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* Copyright (C) 2012 Samsung Electronics
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* author: Lukasz Majewski <l.majewski@samsung.com>
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* author: Piotr Wilczek <p.wilczek@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <malloc.h>
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#include <command.h>
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#include <part_efi.h>
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#include <exports.h>
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#include <linux/ctype.h>
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#include <div64.h>
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#include <memalign.h>
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#include <linux/compat.h>
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#include <linux/sizes.h>
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#include <stdlib.h>
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static LIST_HEAD(disk_partitions);
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/**
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* extract_env(): Expand env name from string format '&{env_name}'
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* and return pointer to the env (if the env is set)
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*
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* @param str - pointer to string
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* @param env - pointer to pointer to extracted env
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*
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* @return - zero on successful expand and env is set
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*/
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static int extract_env(const char *str, char **env)
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{
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int ret = -1;
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char *e, *s;
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#ifdef CONFIG_RANDOM_UUID
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char uuid_str[UUID_STR_LEN + 1];
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#endif
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if (!str || strlen(str) < 4)
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return -1;
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if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
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return -1;
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s = strdup(str);
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if (s == NULL)
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return -1;
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memset(s + strlen(s) - 1, '\0', 1);
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memmove(s, s + 2, strlen(s) - 1);
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e = env_get(s);
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if (e == NULL) {
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#ifdef CONFIG_RANDOM_UUID
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debug("%s unset. ", str);
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gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID);
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env_set(s, uuid_str);
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e = env_get(s);
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if (e) {
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debug("Set to random.\n");
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ret = 0;
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} else {
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debug("Can't get random UUID.\n");
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}
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#else
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debug("%s unset.\n", str);
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#endif
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} else {
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debug("%s get from environment.\n", str);
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ret = 0;
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}
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*env = e;
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free(s);
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return ret;
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}
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/**
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* extract_val(): Extract value from a key=value pair list (comma separated).
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* Only value for the given key is returend.
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* Function allocates memory for the value, remember to free!
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*
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* @param str - pointer to string with key=values pairs
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* @param key - pointer to the key to search for
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*
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* @return - pointer to allocated string with the value
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*/
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static char *extract_val(const char *str, const char *key)
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{
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char *v, *k;
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char *s, *strcopy;
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char *new = NULL;
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strcopy = strdup(str);
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if (strcopy == NULL)
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return NULL;
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s = strcopy;
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while (s) {
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v = strsep(&s, ",");
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if (!v)
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break;
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k = strsep(&v, "=");
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if (!k)
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break;
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if (strcmp(k, key) == 0) {
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new = strdup(v);
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break;
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}
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}
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free(strcopy);
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return new;
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}
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/**
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* found_key(): Found key without value in parameter list (comma separated).
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*
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* @param str - pointer to string with key
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* @param key - pointer to the key to search for
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*
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* @return - true on found key
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*/
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static bool found_key(const char *str, const char *key)
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{
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char *k;
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char *s, *strcopy;
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bool result = false;
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strcopy = strdup(str);
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if (!strcopy)
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return NULL;
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s = strcopy;
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while (s) {
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k = strsep(&s, ",");
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if (!k)
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break;
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if (strcmp(k, key) == 0) {
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result = true;
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break;
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}
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}
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free(strcopy);
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return result;
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}
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static int calc_parts_list_len(int numparts)
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{
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int partlistlen = UUID_STR_LEN + 1 + strlen("uuid_disk=");
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/* for the comma */
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partlistlen++;
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/* per-partition additions; numparts starts at 1, so this should be correct */
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partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN + 1);
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/* see part.h for definition of struct disk_partition */
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partlistlen += numparts * (strlen("start=MiB,") + sizeof(lbaint_t) + 1);
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partlistlen += numparts * (strlen("size=MiB,") + sizeof(lbaint_t) + 1);
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partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN + 1);
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/* for the terminating null */
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partlistlen++;
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debug("Length of partitions_list is %d for %d partitions\n", partlistlen,
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numparts);
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return partlistlen;
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}
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#ifdef CONFIG_CMD_GPT_RENAME
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static void del_gpt_info(void)
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{
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struct list_head *pos = &disk_partitions;
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struct disk_part *curr;
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while (!list_empty(pos)) {
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curr = list_entry(pos->next, struct disk_part, list);
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list_del(pos->next);
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free(curr);
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}
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}
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static struct disk_part *allocate_disk_part(disk_partition_t *info, int partnum)
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{
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struct disk_part *newpart;
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newpart = calloc(1, sizeof(struct disk_part));
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if (!newpart)
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return ERR_PTR(-ENOMEM);
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newpart->gpt_part_info.start = info->start;
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newpart->gpt_part_info.size = info->size;
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newpart->gpt_part_info.blksz = info->blksz;
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strncpy((char *)newpart->gpt_part_info.name, (const char *)info->name,
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PART_NAME_LEN);
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newpart->gpt_part_info.name[PART_NAME_LEN - 1] = '\0';
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strncpy((char *)newpart->gpt_part_info.type, (const char *)info->type,
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PART_TYPE_LEN);
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newpart->gpt_part_info.type[PART_TYPE_LEN - 1] = '\0';
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newpart->gpt_part_info.bootable = info->bootable;
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#ifdef CONFIG_PARTITION_UUIDS
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strncpy(newpart->gpt_part_info.uuid, (const char *)info->uuid,
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UUID_STR_LEN);
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/* UUID_STR_LEN is correct, as uuid[]'s length is UUID_STR_LEN+1 chars */
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newpart->gpt_part_info.uuid[UUID_STR_LEN] = '\0';
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#endif
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newpart->partnum = partnum;
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return newpart;
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}
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static void prettyprint_part_size(char *sizestr, lbaint_t partsize,
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lbaint_t blksize)
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{
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unsigned long long partbytes, partmegabytes;
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partbytes = partsize * blksize;
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partmegabytes = lldiv(partbytes, SZ_1M);
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snprintf(sizestr, 16, "%lluMiB", partmegabytes);
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}
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static void print_gpt_info(void)
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{
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struct list_head *pos;
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struct disk_part *curr;
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char partstartstr[16];
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char partsizestr[16];
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list_for_each(pos, &disk_partitions) {
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curr = list_entry(pos, struct disk_part, list);
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prettyprint_part_size(partstartstr, curr->gpt_part_info.start,
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curr->gpt_part_info.blksz);
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prettyprint_part_size(partsizestr, curr->gpt_part_info.size,
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curr->gpt_part_info.blksz);
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printf("Partition %d:\n", curr->partnum);
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printf("Start %s, size %s\n", partstartstr, partsizestr);
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printf("Block size %lu, name %s\n", curr->gpt_part_info.blksz,
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curr->gpt_part_info.name);
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printf("Type %s, bootable %d\n", curr->gpt_part_info.type,
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curr->gpt_part_info.bootable);
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#ifdef CONFIG_PARTITION_UUIDS
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printf("UUID %s\n", curr->gpt_part_info.uuid);
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#endif
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printf("\n");
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}
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}
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/*
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* create the string that upstream 'gpt write' command will accept as an
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* argument
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*
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* From doc/README.gpt, Format of partitions layout:
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* "uuid_disk=...;name=u-boot,size=60MiB,uuid=...;
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* name=kernel,size=60MiB,uuid=...;"
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* The fields 'name' and 'size' are mandatory for every partition.
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* The field 'start' is optional. The fields 'uuid' and 'uuid_disk'
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* are optional if CONFIG_RANDOM_UUID is enabled.
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*/
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static int create_gpt_partitions_list(int numparts, const char *guid,
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char *partitions_list)
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{
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struct list_head *pos;
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struct disk_part *curr;
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char partstr[PART_NAME_LEN + 1];
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if (!partitions_list)
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return -EINVAL;
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strcpy(partitions_list, "uuid_disk=");
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strncat(partitions_list, guid, UUID_STR_LEN + 1);
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strcat(partitions_list, ";");
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list_for_each(pos, &disk_partitions) {
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curr = list_entry(pos, struct disk_part, list);
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strcat(partitions_list, "name=");
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strncat(partitions_list, (const char *)curr->gpt_part_info.name,
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PART_NAME_LEN + 1);
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sprintf(partstr, ",start=0x%llx",
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(unsigned long long)curr->gpt_part_info.start *
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curr->gpt_part_info.blksz);
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/* one extra byte for NULL */
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strncat(partitions_list, partstr, PART_NAME_LEN + 1);
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sprintf(partstr, ",size=0x%llx",
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(unsigned long long)curr->gpt_part_info.size *
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curr->gpt_part_info.blksz);
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strncat(partitions_list, partstr, PART_NAME_LEN + 1);
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strcat(partitions_list, ",uuid=");
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strncat(partitions_list, curr->gpt_part_info.uuid,
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UUID_STR_LEN + 1);
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strcat(partitions_list, ";");
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}
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return 0;
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}
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/*
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* read partition info into disk_partitions list where
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* it can be printed or modified
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*/
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static int get_gpt_info(struct blk_desc *dev_desc)
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{
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/* start partition numbering at 1, as U-Boot does */
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int valid_parts = 0, p, ret;
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disk_partition_t info;
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struct disk_part *new_disk_part;
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/*
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* Always re-read partition info from device, in case
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* it has changed
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*/
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INIT_LIST_HEAD(&disk_partitions);
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for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
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ret = part_get_info(dev_desc, p, &info);
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if (ret)
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continue;
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/* Add 1 here because counter is zero-based but p1 is
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the first partition */
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new_disk_part = allocate_disk_part(&info, valid_parts+1);
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if (IS_ERR(new_disk_part))
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goto out;
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list_add_tail(&new_disk_part->list, &disk_partitions);
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valid_parts++;
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}
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if (valid_parts == 0) {
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printf("** No valid partitions found **\n");
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goto out;
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}
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return valid_parts;
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out:
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if (valid_parts >= 1)
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del_gpt_info();
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return -ENODEV;
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}
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/* a wrapper to test get_gpt_info */
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static int do_get_gpt_info(struct blk_desc *dev_desc)
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{
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int ret;
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ret = get_gpt_info(dev_desc);
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if (ret > 0) {
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print_gpt_info();
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del_gpt_info();
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return 0;
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}
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return ret;
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}
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#endif
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/**
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* set_gpt_info(): Fill partition information from string
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* function allocates memory, remember to free!
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*
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* @param dev_desc - pointer block device descriptor
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* @param str_part - pointer to string with partition information
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* @param str_disk_guid - pointer to pointer to allocated string with disk guid
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* @param partitions - pointer to pointer to allocated partitions array
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* @param parts_count - number of partitions
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*
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* @return - zero on success, otherwise error
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*
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*/
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static int set_gpt_info(struct blk_desc *dev_desc,
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const char *str_part,
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char **str_disk_guid,
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disk_partition_t **partitions,
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u8 *parts_count)
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{
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char *tok, *str, *s;
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int i;
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char *val, *p;
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int p_count;
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disk_partition_t *parts;
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int errno = 0;
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uint64_t size_ll, start_ll;
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lbaint_t offset = 0;
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int max_str_part = calc_parts_list_len(MAX_SEARCH_PARTITIONS);
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debug("%s: lba num: 0x%x %d\n", __func__,
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(unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba);
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if (str_part == NULL)
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return -1;
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str = strdup(str_part);
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if (str == NULL)
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return -ENOMEM;
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/* extract disk guid */
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s = str;
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val = extract_val(str, "uuid_disk");
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if (!val) {
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#ifdef CONFIG_RANDOM_UUID
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*str_disk_guid = malloc(UUID_STR_LEN + 1);
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if (*str_disk_guid == NULL)
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return -ENOMEM;
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gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
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#else
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free(str);
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return -2;
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#endif
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} else {
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val = strsep(&val, ";");
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if (extract_env(val, &p))
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p = val;
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*str_disk_guid = strdup(p);
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free(val);
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/* Move s to first partition */
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strsep(&s, ";");
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}
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if (s == NULL) {
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printf("Error: is the partitions string NULL-terminated?\n");
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return -EINVAL;
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}
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if (strnlen(s, max_str_part) == 0)
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return -3;
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i = strnlen(s, max_str_part) - 1;
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if (s[i] == ';')
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s[i] = '\0';
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/* calculate expected number of partitions */
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p_count = 1;
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p = s;
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while (*p) {
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if (*p++ == ';')
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p_count++;
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}
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/* allocate memory for partitions */
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parts = calloc(sizeof(disk_partition_t), p_count);
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if (parts == NULL)
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return -ENOMEM;
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/* retrieve partitions data from string */
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for (i = 0; i < p_count; i++) {
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tok = strsep(&s, ";");
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if (tok == NULL)
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break;
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/* uuid */
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val = extract_val(tok, "uuid");
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if (!val) {
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/* 'uuid' is optional if random uuid's are enabled */
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#ifdef CONFIG_RANDOM_UUID
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gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD);
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#else
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errno = -4;
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goto err;
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#endif
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} else {
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if (extract_env(val, &p))
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p = val;
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if (strnlen(p, max_str_part) >= sizeof(parts[i].uuid)) {
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printf("Wrong uuid format for partition %d\n", i);
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errno = -4;
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goto err;
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}
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strncpy((char *)parts[i].uuid, p, max_str_part);
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free(val);
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}
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#ifdef CONFIG_PARTITION_TYPE_GUID
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/* guid */
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val = extract_val(tok, "type");
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if (val) {
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/* 'type' is optional */
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if (extract_env(val, &p))
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p = val;
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if (strnlen(p, max_str_part) >= sizeof(parts[i].type_guid)) {
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printf("Wrong type guid format for partition %d\n",
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i);
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errno = -4;
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goto err;
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}
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strncpy((char *)parts[i].type_guid, p, max_str_part);
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free(val);
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}
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#endif
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/* name */
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val = extract_val(tok, "name");
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if (!val) { /* name is mandatory */
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errno = -4;
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goto err;
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}
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if (extract_env(val, &p))
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p = val;
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if (strnlen(p, max_str_part) >= sizeof(parts[i].name)) {
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errno = -4;
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goto err;
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}
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strncpy((char *)parts[i].name, p, max_str_part);
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free(val);
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/* size */
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val = extract_val(tok, "size");
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if (!val) { /* 'size' is mandatory */
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errno = -4;
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goto err;
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}
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if (extract_env(val, &p))
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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 = 1;
|
|
}
|
|
|
|
*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;
|
|
disk_partition_t *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);
|
|
disk_partition_t *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;
|
|
}
|
|
|
|
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
|
|
/*
|
|
* There are 3 malloc() calls in set_gpt_info() and there is no info about which
|
|
* failed.
|
|
*/
|
|
static void set_gpt_cleanup(char **str_disk_guid,
|
|
disk_partition_t **partitions)
|
|
{
|
|
#ifdef CONFIG_RANDOM_UUID
|
|
if (str_disk_guid)
|
|
free(str_disk_guid);
|
|
#endif
|
|
if (partitions)
|
|
free(partitions);
|
|
}
|
|
|
|
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;
|
|
disk_partition_t *new_partitions = NULL;
|
|
char disk_guid[UUID_STR_LEN + 1];
|
|
char *partitions_list, *str_disk_guid;
|
|
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) {
|
|
del_gpt_info();
|
|
free(partitions_list);
|
|
if (ret == -ENOMEM)
|
|
set_gpt_cleanup(&str_disk_guid, &new_partitions);
|
|
else
|
|
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) {
|
|
del_gpt_info();
|
|
free(partitions_list);
|
|
if (ret == -ENOMEM)
|
|
set_gpt_cleanup(&str_disk_guid, &new_partitions);
|
|
else
|
|
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();
|
|
del_gpt_info();
|
|
out:
|
|
free(new_partitions);
|
|
free(str_disk_guid);
|
|
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(cmd_tbl_t *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)simple_strtoul(argv[3], &ep, 10);
|
|
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], "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);
|
|
} 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"
|
|
" gpt verify mmc 0 $partitions\n"
|
|
" read <interface> <dev>\n"
|
|
" - read GPT into a data structure for manipulation\n"
|
|
" guid <interface> <dev>\n"
|
|
" - print disk GUID\n"
|
|
" 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 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
|
|
);
|