u-boot/cmd/ubi.c
Dmitry Dunaev 34031e9cce cmd: ubi: Fix 'ubi list' command arguments parsing
This fixes allowed argc variable value for arguments parsing

Fixes: 6de1daf64b ("cmd: ubi: Add 'ubi list' command")
Signed-off-by: Dmitry Dunaev <dunaev@tecon.ru>
2023-08-15 07:32:13 +02:00

835 lines
18 KiB
C

/*
* Unsorted Block Image commands
*
* Copyright (C) 2008 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
* Copyright 2008-2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <exports.h>
#include <malloc.h>
#include <memalign.h>
#include <mtd.h>
#include <nand.h>
#include <onenand_uboot.h>
#include <dm/devres.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/err.h>
#include <ubi_uboot.h>
#include <linux/errno.h>
#include <jffs2/load_kernel.h>
#include <linux/log2.h>
#undef ubi_msg
#define ubi_msg(fmt, ...) printf("UBI: " fmt "\n", ##__VA_ARGS__)
/* Private own data */
static struct ubi_device *ubi;
#ifdef CONFIG_CMD_UBIFS
#include <ubifs_uboot.h>
#endif
static void display_volume_info(struct ubi_device *ubi)
{
int i;
for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
if (!ubi->volumes[i])
continue; /* Empty record */
ubi_dump_vol_info(ubi->volumes[i]);
}
}
static void display_ubi_info(struct ubi_device *ubi)
{
ubi_msg("MTD device name: \"%s\"", ubi->mtd->name);
ubi_msg("MTD device size: %llu MiB", ubi->flash_size >> 20);
ubi_msg("physical eraseblock size: %d bytes (%d KiB)",
ubi->peb_size, ubi->peb_size >> 10);
ubi_msg("logical eraseblock size: %d bytes", ubi->leb_size);
ubi_msg("number of good PEBs: %d", ubi->good_peb_count);
ubi_msg("number of bad PEBs: %d", ubi->bad_peb_count);
ubi_msg("smallest flash I/O unit: %d", ubi->min_io_size);
ubi_msg("VID header offset: %d (aligned %d)",
ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
ubi_msg("data offset: %d", ubi->leb_start);
ubi_msg("max. allowed volumes: %d", ubi->vtbl_slots);
ubi_msg("wear-leveling threshold: %d", CONFIG_MTD_UBI_WL_THRESHOLD);
ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT);
ubi_msg("number of user volumes: %d",
ubi->vol_count - UBI_INT_VOL_COUNT);
ubi_msg("available PEBs: %d", ubi->avail_pebs);
ubi_msg("total number of reserved PEBs: %d", ubi->rsvd_pebs);
ubi_msg("number of PEBs reserved for bad PEB handling: %d",
ubi->beb_rsvd_pebs);
ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec);
}
static int ubi_info(int layout)
{
if (layout)
display_volume_info(ubi);
else
display_ubi_info(ubi);
return 0;
}
static int ubi_list(const char *var, int numeric)
{
size_t namelen, len, size;
char *str, *str2;
int i;
if (!var) {
for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
if (!ubi->volumes[i])
continue;
if (ubi->volumes[i]->vol_id >= UBI_INTERNAL_VOL_START)
continue;
printf("%d: %s\n",
ubi->volumes[i]->vol_id,
ubi->volumes[i]->name);
}
return 0;
}
len = 0;
size = 16;
str = malloc(size);
if (!str)
return 1;
for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
if (!ubi->volumes[i])
continue;
if (ubi->volumes[i]->vol_id >= UBI_INTERNAL_VOL_START)
continue;
if (numeric)
namelen = 10; /* strlen(stringify(INT_MAX)) */
else
namelen = strlen(ubi->volumes[i]->name);
if (len + namelen + 1 > size) {
size = roundup_pow_of_two(len + namelen + 1) * 2;
str2 = realloc(str, size);
if (!str2) {
free(str);
return 1;
}
str = str2;
}
if (len)
str[len++] = ' ';
if (numeric) {
len += sprintf(str + len, "%d", ubi->volumes[i]->vol_id) + 1;
} else {
memcpy(str + len, ubi->volumes[i]->name, namelen);
len += namelen;
str[len] = 0;
}
}
env_set(var, str);
free(str);
return 0;
}
static int ubi_check_volumename(const struct ubi_volume *vol, char *name)
{
return strcmp(vol->name, name);
}
static int ubi_check(char *name)
{
int i;
for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
if (!ubi->volumes[i])
continue; /* Empty record */
if (!ubi_check_volumename(ubi->volumes[i], name))
return 0;
}
return 1;
}
static int verify_mkvol_req(const struct ubi_device *ubi,
const struct ubi_mkvol_req *req)
{
int n, err = EINVAL;
if (req->bytes < 0 || req->alignment < 0 || req->vol_type < 0 ||
req->name_len < 0)
goto bad;
if ((req->vol_id < 0 || req->vol_id >= ubi->vtbl_slots) &&
req->vol_id != UBI_VOL_NUM_AUTO)
goto bad;
if (req->alignment == 0)
goto bad;
if (req->bytes == 0) {
printf("No space left in UBI device!\n");
err = ENOMEM;
goto bad;
}
if (req->vol_type != UBI_DYNAMIC_VOLUME &&
req->vol_type != UBI_STATIC_VOLUME)
goto bad;
if (req->alignment > ubi->leb_size)
goto bad;
n = req->alignment % ubi->min_io_size;
if (req->alignment != 1 && n)
goto bad;
if (req->name_len > UBI_VOL_NAME_MAX) {
printf("Name too long!\n");
err = ENAMETOOLONG;
goto bad;
}
return 0;
bad:
return err;
}
static int ubi_create_vol(char *volume, int64_t size, int dynamic, int vol_id,
bool skipcheck)
{
struct ubi_mkvol_req req;
int err;
if (dynamic)
req.vol_type = UBI_DYNAMIC_VOLUME;
else
req.vol_type = UBI_STATIC_VOLUME;
req.vol_id = vol_id;
req.alignment = 1;
req.bytes = size;
strcpy(req.name, volume);
req.name_len = strlen(volume);
req.name[req.name_len] = '\0';
req.flags = 0;
if (skipcheck)
req.flags |= UBI_VOL_SKIP_CRC_CHECK_FLG;
/* It's duplicated at drivers/mtd/ubi/cdev.c */
err = verify_mkvol_req(ubi, &req);
if (err) {
printf("verify_mkvol_req failed %d\n", err);
return err;
}
printf("Creating %s volume %s of size %lld\n",
dynamic ? "dynamic" : "static", volume, size);
/* Call real ubi create volume */
return ubi_create_volume(ubi, &req);
}
static struct ubi_volume *ubi_find_volume(char *volume)
{
struct ubi_volume *vol = NULL;
int i;
for (i = 0; i < ubi->vtbl_slots; i++) {
vol = ubi->volumes[i];
if (vol && !strcmp(vol->name, volume))
return vol;
}
printf("Volume %s not found!\n", volume);
return NULL;
}
static int ubi_remove_vol(char *volume)
{
int err, reserved_pebs, i;
struct ubi_volume *vol;
vol = ubi_find_volume(volume);
if (vol == NULL)
return ENODEV;
printf("Remove UBI volume %s (id %d)\n", vol->name, vol->vol_id);
if (ubi->ro_mode) {
printf("It's read-only mode\n");
err = EROFS;
goto out_err;
}
err = ubi_change_vtbl_record(ubi, vol->vol_id, NULL);
if (err) {
printf("Error changing Vol tabel record err=%x\n", err);
goto out_err;
}
reserved_pebs = vol->reserved_pebs;
for (i = 0; i < vol->reserved_pebs; i++) {
err = ubi_eba_unmap_leb(ubi, vol, i);
if (err)
goto out_err;
}
kfree(vol->eba_tbl);
ubi->volumes[vol->vol_id]->eba_tbl = NULL;
ubi->volumes[vol->vol_id] = NULL;
ubi->rsvd_pebs -= reserved_pebs;
ubi->avail_pebs += reserved_pebs;
i = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs;
if (i > 0) {
i = ubi->avail_pebs >= i ? i : ubi->avail_pebs;
ubi->avail_pebs -= i;
ubi->rsvd_pebs += i;
ubi->beb_rsvd_pebs += i;
if (i > 0)
ubi_msg("reserve more %d PEBs", i);
}
ubi->vol_count -= 1;
return 0;
out_err:
ubi_err(ubi, "cannot remove volume %s, error %d", volume, err);
if (err < 0)
err = -err;
return err;
}
static int ubi_rename_vol(char *oldname, char *newname)
{
struct ubi_volume *vol;
struct ubi_rename_entry rename;
struct ubi_volume_desc desc;
struct list_head list;
vol = ubi_find_volume(oldname);
if (!vol) {
printf("%s: volume %s doesn't exist\n", __func__, oldname);
return ENODEV;
}
if (!ubi_check(newname)) {
printf("%s: volume %s already exist\n", __func__, newname);
return EINVAL;
}
printf("Rename UBI volume %s to %s\n", oldname, newname);
if (ubi->ro_mode) {
printf("%s: ubi device is in read-only mode\n", __func__);
return EROFS;
}
rename.new_name_len = strlen(newname);
strcpy(rename.new_name, newname);
rename.remove = 0;
desc.vol = vol;
desc.mode = 0;
rename.desc = &desc;
INIT_LIST_HEAD(&rename.list);
INIT_LIST_HEAD(&list);
list_add(&rename.list, &list);
return ubi_rename_volumes(ubi, &list);
}
static int ubi_volume_continue_write(char *volume, void *buf, size_t size)
{
int err = 1;
struct ubi_volume *vol;
vol = ubi_find_volume(volume);
if (vol == NULL)
return ENODEV;
err = ubi_more_update_data(ubi, vol, buf, size);
if (err < 0) {
printf("Couldnt or partially wrote data\n");
return -err;
}
if (err) {
size = err;
err = ubi_check_volume(ubi, vol->vol_id);
if (err < 0)
return -err;
if (err) {
ubi_warn(ubi, "volume %d on UBI device %d is corrupt",
vol->vol_id, ubi->ubi_num);
vol->corrupted = 1;
}
vol->checked = 1;
ubi_gluebi_updated(vol);
}
return 0;
}
int ubi_volume_begin_write(char *volume, void *buf, size_t size,
size_t full_size)
{
int err = 1;
int rsvd_bytes = 0;
struct ubi_volume *vol;
vol = ubi_find_volume(volume);
if (vol == NULL)
return ENODEV;
rsvd_bytes = vol->reserved_pebs * (ubi->leb_size - vol->data_pad);
if (size > rsvd_bytes) {
printf("size > volume size! Aborting!\n");
return EINVAL;
}
err = ubi_start_update(ubi, vol, full_size);
if (err < 0) {
printf("Cannot start volume update\n");
return -err;
}
return ubi_volume_continue_write(volume, buf, size);
}
int ubi_volume_write(char *volume, void *buf, size_t size)
{
return ubi_volume_begin_write(volume, buf, size, size);
}
int ubi_volume_read(char *volume, char *buf, size_t size)
{
int err, lnum, off, len, tbuf_size;
void *tbuf;
unsigned long long tmp;
struct ubi_volume *vol;
loff_t offp = 0;
size_t len_read;
vol = ubi_find_volume(volume);
if (vol == NULL)
return ENODEV;
if (vol->updating) {
printf("updating");
return EBUSY;
}
if (vol->upd_marker) {
printf("damaged volume, update marker is set");
return EBADF;
}
if (offp == vol->used_bytes)
return 0;
if (size == 0) {
printf("No size specified -> Using max size (%lld)\n", vol->used_bytes);
size = vol->used_bytes;
}
printf("Read %zu bytes from volume %s to %p\n", size, volume, buf);
if (vol->corrupted)
printf("read from corrupted volume %d", vol->vol_id);
if (offp + size > vol->used_bytes)
size = vol->used_bytes - offp;
tbuf_size = vol->usable_leb_size;
if (size < tbuf_size)
tbuf_size = ALIGN(size, ubi->min_io_size);
tbuf = malloc_cache_aligned(tbuf_size);
if (!tbuf) {
printf("NO MEM\n");
return ENOMEM;
}
len = size > tbuf_size ? tbuf_size : size;
tmp = offp;
off = do_div(tmp, vol->usable_leb_size);
lnum = tmp;
len_read = size;
do {
if (off + len >= vol->usable_leb_size)
len = vol->usable_leb_size - off;
err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);
if (err) {
printf("read err %x\n", err);
err = -err;
break;
}
off += len;
if (off == vol->usable_leb_size) {
lnum += 1;
off -= vol->usable_leb_size;
}
size -= len;
offp += len;
memcpy(buf, tbuf, len);
buf += len;
len = size > tbuf_size ? tbuf_size : size;
} while (size);
if (!size)
env_set_hex("filesize", len_read);
free(tbuf);
return err;
}
static int ubi_dev_scan(struct mtd_info *info, const char *vid_header_offset)
{
char ubi_mtd_param_buffer[80];
int err;
if (!vid_header_offset)
sprintf(ubi_mtd_param_buffer, "%s", info->name);
else
sprintf(ubi_mtd_param_buffer, "%s,%s", info->name,
vid_header_offset);
err = ubi_mtd_param_parse(ubi_mtd_param_buffer, NULL);
if (err)
return -err;
err = ubi_init();
if (err)
return -err;
return 0;
}
static int ubi_set_skip_check(char *volume, bool skip_check)
{
struct ubi_vtbl_record vtbl_rec;
struct ubi_volume *vol;
vol = ubi_find_volume(volume);
if (!vol)
return ENODEV;
printf("%sing skip_check on volume %s\n",
skip_check ? "Sett" : "Clear", volume);
vtbl_rec = ubi->vtbl[vol->vol_id];
if (skip_check) {
vtbl_rec.flags |= UBI_VTBL_SKIP_CRC_CHECK_FLG;
vol->skip_check = 1;
} else {
vtbl_rec.flags &= ~UBI_VTBL_SKIP_CRC_CHECK_FLG;
vol->skip_check = 0;
}
return ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
}
static int ubi_detach(void)
{
#ifdef CONFIG_CMD_UBIFS
/*
* Automatically unmount UBIFS partition when user
* changes the UBI device. Otherwise the following
* UBIFS commands will crash.
*/
if (ubifs_is_mounted())
cmd_ubifs_umount();
#endif
/*
* Call ubi_exit() before re-initializing the UBI subsystem
*/
if (ubi)
ubi_exit();
ubi = NULL;
return 0;
}
int ubi_part(char *part_name, const char *vid_header_offset)
{
struct mtd_info *mtd;
int err = 0;
if (ubi && ubi->mtd && !strcmp(ubi->mtd->name, part_name)) {
printf("UBI partition '%s' already selected\n", part_name);
return 0;
}
ubi_detach();
mtd_probe_devices();
mtd = get_mtd_device_nm(part_name);
if (IS_ERR(mtd)) {
printf("Partition %s not found!\n", part_name);
return 1;
}
put_mtd_device(mtd);
err = ubi_dev_scan(mtd, vid_header_offset);
if (err) {
printf("UBI init error %d\n", err);
printf("Please check, if the correct MTD partition is used (size big enough?)\n");
return err;
}
ubi = ubi_devices[0];
return 0;
}
static int do_ubi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
int64_t size = 0;
ulong addr = 0;
bool skipcheck = false;
if (argc < 2)
return CMD_RET_USAGE;
if (strcmp(argv[1], "detach") == 0)
return ubi_detach();
if (strcmp(argv[1], "part") == 0) {
const char *vid_header_offset = NULL;
/* Print current partition */
if (argc == 2) {
if (!ubi) {
printf("Error, no UBI device selected!\n");
return 1;
}
printf("Device %d: %s, MTD partition %s\n",
ubi->ubi_num, ubi->ubi_name, ubi->mtd->name);
return 0;
}
if (argc < 3)
return CMD_RET_USAGE;
if (argc > 3)
vid_header_offset = argv[3];
return ubi_part(argv[2], vid_header_offset);
}
if ((strcmp(argv[1], "part") != 0) && !ubi) {
printf("Error, no UBI device selected!\n");
return 1;
}
if (strcmp(argv[1], "info") == 0) {
int layout = 0;
if (argc > 2 && !strncmp(argv[2], "l", 1))
layout = 1;
return ubi_info(layout);
}
if (strcmp(argv[1], "list") == 0) {
int numeric = 0;
if (argc >= 3 && argv[2][0] == '-') {
if (strcmp(argv[2], "-numeric") == 0)
numeric = 1;
else
return CMD_RET_USAGE;
}
if (!numeric && argc != 2 && argc != 3)
return CMD_RET_USAGE;
if (numeric && argc != 3 && argc != 4)
return CMD_RET_USAGE;
return ubi_list(argv[numeric ? 3 : 2], numeric);
}
if (strcmp(argv[1], "check") == 0) {
if (argc > 2)
return ubi_check(argv[2]);
printf("Error, no volume name passed\n");
return 1;
}
if (strncmp(argv[1], "create", 6) == 0) {
int dynamic = 1; /* default: dynamic volume */
int id = UBI_VOL_NUM_AUTO;
/* Use maximum available size */
size = 0;
/* E.g., create volume with "skipcheck" bit set */
if (argc == 7) {
skipcheck = strncmp(argv[6], "--skipcheck", 11) == 0;
argc--;
}
/* E.g., create volume size type vol_id */
if (argc == 6) {
id = simple_strtoull(argv[5], NULL, 16);
argc--;
}
/* E.g., create volume size type */
if (argc == 5) {
if (strncmp(argv[4], "s", 1) == 0)
dynamic = 0;
else if (strncmp(argv[4], "d", 1) != 0) {
printf("Incorrect type\n");
return 1;
}
argc--;
}
/* E.g., create volume size */
if (argc == 4) {
if (argv[3][0] != '-')
size = simple_strtoull(argv[3], NULL, 16);
argc--;
}
/* Use maximum available size */
if (!size) {
size = (int64_t)ubi->avail_pebs * ubi->leb_size;
printf("No size specified -> Using max size (%lld)\n", size);
}
/* E.g., create volume */
if (argc == 3) {
return ubi_create_vol(argv[2], size, dynamic, id,
skipcheck);
}
}
if (strncmp(argv[1], "remove", 6) == 0) {
/* E.g., remove volume */
if (argc == 3)
return ubi_remove_vol(argv[2]);
}
if (IS_ENABLED(CONFIG_CMD_UBI_RENAME) && !strncmp(argv[1], "rename", 6))
return ubi_rename_vol(argv[2], argv[3]);
if (strncmp(argv[1], "skipcheck", 9) == 0) {
/* E.g., change skip_check flag */
if (argc == 4) {
skipcheck = strncmp(argv[3], "on", 2) == 0;
return ubi_set_skip_check(argv[2], skipcheck);
}
}
if (strncmp(argv[1], "write", 5) == 0) {
int ret;
if (argc < 5) {
printf("Please see usage\n");
return 1;
}
addr = hextoul(argv[2], NULL);
size = hextoul(argv[4], NULL);
if (strlen(argv[1]) == 10 &&
strncmp(argv[1] + 5, ".part", 5) == 0) {
if (argc < 6) {
ret = ubi_volume_continue_write(argv[3],
(void *)addr, size);
} else {
size_t full_size;
full_size = hextoul(argv[5], NULL);
ret = ubi_volume_begin_write(argv[3],
(void *)addr, size, full_size);
}
} else {
ret = ubi_volume_write(argv[3], (void *)addr, size);
}
if (!ret) {
printf("%lld bytes written to volume %s\n", size,
argv[3]);
}
return ret;
}
if (strncmp(argv[1], "read", 4) == 0) {
size = 0;
/* E.g., read volume size */
if (argc == 5) {
size = hextoul(argv[4], NULL);
argc--;
}
/* E.g., read volume */
if (argc == 4) {
addr = hextoul(argv[2], NULL);
argc--;
}
if (argc == 3) {
return ubi_volume_read(argv[3], (char *)addr, size);
}
}
printf("Please see usage\n");
return 1;
}
U_BOOT_CMD(
ubi, 7, 1, do_ubi,
"ubi commands",
"detach"
" - detach ubi from a mtd partition\n"
"ubi part [part] [offset]\n"
" - Show or set current partition (with optional VID"
" header offset)\n"
"ubi info [l[ayout]]"
" - Display volume and ubi layout information\n"
"ubi list [flags]"
" - print the list of volumes\n"
"ubi list [flags] <varname>"
" - set environment variable to the list of volumes"
" (flags can be -numeric)\n"
"ubi check volumename"
" - check if volumename exists\n"
"ubi create[vol] volume [size] [type] [id] [--skipcheck]\n"
" - create volume name with size ('-' for maximum"
" available size)\n"
"ubi write[vol] address volume size"
" - Write volume from address with size\n"
"ubi write.part address volume size [fullsize]\n"
" - Write part of a volume from address\n"
"ubi read[vol] address volume [size]"
" - Read volume to address with size\n"
"ubi remove[vol] volume"
" - Remove volume\n"
#if IS_ENABLED(CONFIG_CMD_UBI_RENAME)
"ubi rename oldname newname\n"
#endif
"ubi skipcheck volume on/off - Set or clear skip_check flag in volume header\n"
"[Legends]\n"
" volume: character name\n"
" size: specified in bytes\n"
" type: s[tatic] or d[ynamic] (default=dynamic)"
);