[thirdparty/u-boot.git] / fs / fs.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
 */

#include <config.h>
#include <errno.h>
#include <common.h>
#include <mapmem.h>
#include <part.h>
#include <ext4fs.h>
#include <fat.h>
#include <fs.h>
#include <sandboxfs.h>
#include <ubifs_uboot.h>
#include <btrfs.h>
#include <asm/io.h>
#include <div64.h>
#include <linux/math64.h>

DECLARE_GLOBAL_DATA_PTR;

static struct blk_desc *fs_dev_desc;
static int fs_dev_part;
static disk_partition_t fs_partition;
static int fs_type = FS_TYPE_ANY;

static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
				      disk_partition_t *fs_partition)
{
	printf("** Unrecognized filesystem type **\n");
	return -1;
}

static inline int fs_ls_unsupported(const char *dirname)
{
	return -1;
}

/* generic implementation of ls in terms of opendir/readdir/closedir */
__maybe_unused
static int fs_ls_generic(const char *dirname)
{
	struct fs_dir_stream *dirs;
	struct fs_dirent *dent;
	int nfiles = 0, ndirs = 0;

	dirs = fs_opendir(dirname);
	if (!dirs)
		return -errno;

	while ((dent = fs_readdir(dirs))) {
		if (dent->type == FS_DT_DIR) {
			printf("            %s/\n", dent->name);
			ndirs++;
		} else {
			printf(" %8lld   %s\n", dent->size, dent->name);
			nfiles++;
		}
	}

	fs_closedir(dirs);

	printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);

	return 0;
}

static inline int fs_exists_unsupported(const char *filename)
{
	return 0;
}

static inline int fs_size_unsupported(const char *filename, loff_t *size)
{
	return -1;
}

static inline int fs_read_unsupported(const char *filename, void *buf,
				      loff_t offset, loff_t len,
				      loff_t *actread)
{
	return -1;
}

static inline int fs_write_unsupported(const char *filename, void *buf,
				      loff_t offset, loff_t len,
				      loff_t *actwrite)
{
	return -1;
}

static inline void fs_close_unsupported(void)
{
}

static inline int fs_uuid_unsupported(char *uuid_str)
{
	return -1;
}

static inline int fs_opendir_unsupported(const char *filename,
					 struct fs_dir_stream **dirs)
{
	return -EACCES;
}

static inline int fs_unlink_unsupported(const char *filename)
{
	return -1;
}

static inline int fs_mkdir_unsupported(const char *dirname)
{
	return -1;
}

struct fstype_info {
	int fstype;
	char *name;
	/*
	 * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
	 * should be false in most cases. For "virtual" filesystems which
	 * aren't based on a U-Boot block device (e.g. sandbox), this can be
	 * set to true. This should also be true for the dummy entry at the end
	 * of fstypes[], since that is essentially a "virtual" (non-existent)
	 * filesystem.
	 */
	bool null_dev_desc_ok;
	int (*probe)(struct blk_desc *fs_dev_desc,
		     disk_partition_t *fs_partition);
	int (*ls)(const char *dirname);
	int (*exists)(const char *filename);
	int (*size)(const char *filename, loff_t *size);
	int (*read)(const char *filename, void *buf, loff_t offset,
		    loff_t len, loff_t *actread);
	int (*write)(const char *filename, void *buf, loff_t offset,
		     loff_t len, loff_t *actwrite);
	void (*close)(void);
	int (*uuid)(char *uuid_str);
	/*
	 * Open a directory stream.  On success return 0 and directory
	 * stream pointer via 'dirsp'.  On error, return -errno.  See
	 * fs_opendir().
	 */
	int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
	/*
	 * Read next entry from directory stream.  On success return 0
	 * and directory entry pointer via 'dentp'.  On error return
	 * -errno.  See fs_readdir().
	 */
	int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
	/* see fs_closedir() */
	void (*closedir)(struct fs_dir_stream *dirs);
	int (*unlink)(const char *filename);
	int (*mkdir)(const char *dirname);
};

static struct fstype_info fstypes[] = {
#ifdef CONFIG_FS_FAT
	{
		.fstype = FS_TYPE_FAT,
		.name = "fat",
		.null_dev_desc_ok = false,
		.probe = fat_set_blk_dev,
		.close = fat_close,
		.ls = fs_ls_generic,
		.exists = fat_exists,
		.size = fat_size,
		.read = fat_read_file,
#ifdef CONFIG_FAT_WRITE
		.write = file_fat_write,
		.unlink = fat_unlink,
		.mkdir = fat_mkdir,
#else
		.write = fs_write_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
#endif
		.uuid = fs_uuid_unsupported,
		.opendir = fat_opendir,
		.readdir = fat_readdir,
		.closedir = fat_closedir,
	},
#endif
#ifdef CONFIG_FS_EXT4
	{
		.fstype = FS_TYPE_EXT,
		.name = "ext4",
		.null_dev_desc_ok = false,
		.probe = ext4fs_probe,
		.close = ext4fs_close,
		.ls = ext4fs_ls,
		.exists = ext4fs_exists,
		.size = ext4fs_size,
		.read = ext4_read_file,
#ifdef CONFIG_CMD_EXT4_WRITE
		.write = ext4_write_file,
#else
		.write = fs_write_unsupported,
#endif
		.uuid = ext4fs_uuid,
		.opendir = fs_opendir_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
	},
#endif
#ifdef CONFIG_SANDBOX
	{
		.fstype = FS_TYPE_SANDBOX,
		.name = "sandbox",
		.null_dev_desc_ok = true,
		.probe = sandbox_fs_set_blk_dev,
		.close = sandbox_fs_close,
		.ls = sandbox_fs_ls,
		.exists = sandbox_fs_exists,
		.size = sandbox_fs_size,
		.read = fs_read_sandbox,
		.write = fs_write_sandbox,
		.uuid = fs_uuid_unsupported,
		.opendir = fs_opendir_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
	},
#endif
#ifdef CONFIG_CMD_UBIFS
	{
		.fstype = FS_TYPE_UBIFS,
		.name = "ubifs",
		.null_dev_desc_ok = true,
		.probe = ubifs_set_blk_dev,
		.close = ubifs_close,
		.ls = ubifs_ls,
		.exists = ubifs_exists,
		.size = ubifs_size,
		.read = ubifs_read,
		.write = fs_write_unsupported,
		.uuid = fs_uuid_unsupported,
		.opendir = fs_opendir_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
	},
#endif
#ifdef CONFIG_FS_BTRFS
	{
		.fstype = FS_TYPE_BTRFS,
		.name = "btrfs",
		.null_dev_desc_ok = false,
		.probe = btrfs_probe,
		.close = btrfs_close,
		.ls = btrfs_ls,
		.exists = btrfs_exists,
		.size = btrfs_size,
		.read = btrfs_read,
		.write = fs_write_unsupported,
		.uuid = btrfs_uuid,
		.opendir = fs_opendir_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
	},
#endif
	{
		.fstype = FS_TYPE_ANY,
		.name = "unsupported",
		.null_dev_desc_ok = true,
		.probe = fs_probe_unsupported,
		.close = fs_close_unsupported,
		.ls = fs_ls_unsupported,
		.exists = fs_exists_unsupported,
		.size = fs_size_unsupported,
		.read = fs_read_unsupported,
		.write = fs_write_unsupported,
		.uuid = fs_uuid_unsupported,
		.opendir = fs_opendir_unsupported,
		.unlink = fs_unlink_unsupported,
		.mkdir = fs_mkdir_unsupported,
	},
};

static struct fstype_info *fs_get_info(int fstype)
{
	struct fstype_info *info;
	int i;

	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
		if (fstype == info->fstype)
			return info;
	}

	/* Return the 'unsupported' sentinel */
	return info;
}

/**
 * fs_get_type_name() - Get type of current filesystem
 *
 * Return: Pointer to filesystem name
 *
 * Returns a string describing the current filesystem, or the sentinel
 * "unsupported" for any unrecognised filesystem.
 */
const char *fs_get_type_name(void)
{
	return fs_get_info(fs_type)->name;
}

int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
{
	struct fstype_info *info;
	int part, i;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
	static int relocated;

	if (!relocated) {
		for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
				i++, info++) {
			info->name += gd->reloc_off;
			info->probe += gd->reloc_off;
			info->close += gd->reloc_off;
			info->ls += gd->reloc_off;
			info->read += gd->reloc_off;
			info->write += gd->reloc_off;
		}
		relocated = 1;
	}
#endif

	part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
					&fs_partition, 1);
	if (part < 0)
		return -1;

	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
		if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
				fstype != info->fstype)
			continue;

		if (!fs_dev_desc && !info->null_dev_desc_ok)
			continue;

		if (!info->probe(fs_dev_desc, &fs_partition)) {
			fs_type = info->fstype;
			fs_dev_part = part;
			return 0;
		}
	}

	return -1;
}

/* set current blk device w/ blk_desc + partition # */
int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
{
	struct fstype_info *info;
	int ret, i;

	if (part >= 1)
		ret = part_get_info(desc, part, &fs_partition);
	else
		ret = part_get_info_whole_disk(desc, &fs_partition);
	if (ret)
		return ret;
	fs_dev_desc = desc;

	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
		if (!info->probe(fs_dev_desc, &fs_partition)) {
			fs_type = info->fstype;
			fs_dev_part = part;
			return 0;
		}
	}

	return -1;
}

static void fs_close(void)
{
	struct fstype_info *info = fs_get_info(fs_type);

	info->close();

	fs_type = FS_TYPE_ANY;
}

int fs_uuid(char *uuid_str)
{
	struct fstype_info *info = fs_get_info(fs_type);

	return info->uuid(uuid_str);
}

int fs_ls(const char *dirname)
{
	int ret;

	struct fstype_info *info = fs_get_info(fs_type);

	ret = info->ls(dirname);

	fs_type = FS_TYPE_ANY;
	fs_close();

	return ret;
}

int fs_exists(const char *filename)
{
	int ret;

	struct fstype_info *info = fs_get_info(fs_type);

	ret = info->exists(filename);

	fs_close();

	return ret;
}

int fs_size(const char *filename, loff_t *size)
{
	int ret;

	struct fstype_info *info = fs_get_info(fs_type);

	ret = info->size(filename, size);

	fs_close();

	return ret;
}

int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
	    loff_t *actread)
{
	struct fstype_info *info = fs_get_info(fs_type);
	void *buf;
	int ret;

	/*
	 * We don't actually know how many bytes are being read, since len==0
	 * means read the whole file.
	 */
	buf = map_sysmem(addr, len);
	ret = info->read(filename, buf, offset, len, actread);
	unmap_sysmem(buf);

	/* If we requested a specific number of bytes, check we got it */
	if (ret == 0 && len && *actread != len)
		debug("** %s shorter than offset + len **\n", filename);
	fs_close();

	return ret;
}

int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
	     loff_t *actwrite)
{
	struct fstype_info *info = fs_get_info(fs_type);
	void *buf;
	int ret;

	buf = map_sysmem(addr, len);
	ret = info->write(filename, buf, offset, len, actwrite);
	unmap_sysmem(buf);

	if (ret < 0 && len != *actwrite) {
		printf("** Unable to write file %s **\n", filename);
		ret = -1;
	}
	fs_close();

	return ret;
}

struct fs_dir_stream *fs_opendir(const char *filename)
{
	struct fstype_info *info = fs_get_info(fs_type);
	struct fs_dir_stream *dirs = NULL;
	int ret;

	ret = info->opendir(filename, &dirs);
	fs_close();
	if (ret) {
		errno = -ret;
		return NULL;
	}

	dirs->desc = fs_dev_desc;
	dirs->part = fs_dev_part;

	return dirs;
}

struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
{
	struct fstype_info *info;
	struct fs_dirent *dirent;
	int ret;

	fs_set_blk_dev_with_part(dirs->desc, dirs->part);
	info = fs_get_info(fs_type);

	ret = info->readdir(dirs, &dirent);
	fs_close();
	if (ret) {
		errno = -ret;
		return NULL;
	}

	return dirent;
}

void fs_closedir(struct fs_dir_stream *dirs)
{
	struct fstype_info *info;

	if (!dirs)
		return;

	fs_set_blk_dev_with_part(dirs->desc, dirs->part);
	info = fs_get_info(fs_type);

	info->closedir(dirs);
	fs_close();
}

int fs_unlink(const char *filename)
{
	int ret;

	struct fstype_info *info = fs_get_info(fs_type);

	ret = info->unlink(filename);

	fs_type = FS_TYPE_ANY;
	fs_close();

	return ret;
}

int fs_mkdir(const char *dirname)
{
	int ret;

	struct fstype_info *info = fs_get_info(fs_type);

	ret = info->mkdir(dirname);

	fs_type = FS_TYPE_ANY;
	fs_close();

	return ret;
}

int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
		int fstype)
{
	loff_t size;

	if (argc != 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], fstype))
		return 1;

	if (fs_size(argv[3], &size) < 0)
		return CMD_RET_FAILURE;

	env_set_hex("filesize", size);

	return 0;
}

int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
		int fstype)
{
	unsigned long addr;
	const char *addr_str;
	const char *filename;
	loff_t bytes;
	loff_t pos;
	loff_t len_read;
	int ret;
	unsigned long time;
	char *ep;

	if (argc < 2)
		return CMD_RET_USAGE;
	if (argc > 7)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
		return 1;

	if (argc >= 4) {
		addr = simple_strtoul(argv[3], &ep, 16);
		if (ep == argv[3] || *ep != '\0')
			return CMD_RET_USAGE;
	} else {
		addr_str = env_get("loadaddr");
		if (addr_str != NULL)
			addr = simple_strtoul(addr_str, NULL, 16);
		else
			addr = CONFIG_SYS_LOAD_ADDR;
	}
	if (argc >= 5) {
		filename = argv[4];
	} else {
		filename = env_get("bootfile");
		if (!filename) {
			puts("** No boot file defined **\n");
			return 1;
		}
	}
	if (argc >= 6)
		bytes = simple_strtoul(argv[5], NULL, 16);
	else
		bytes = 0;
	if (argc >= 7)
		pos = simple_strtoul(argv[6], NULL, 16);
	else
		pos = 0;

	time = get_timer(0);
	ret = fs_read(filename, addr, pos, bytes, &len_read);
	time = get_timer(time);
	if (ret < 0)
		return 1;

	printf("%llu bytes read in %lu ms", len_read, time);
	if (time > 0) {
		puts(" (");
		print_size(div_u64(len_read, time) * 1000, "/s");
		puts(")");
	}
	puts("\n");

	env_set_hex("fileaddr", addr);
	env_set_hex("filesize", len_read);

	return 0;
}

int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
	int fstype)
{
	if (argc < 2)
		return CMD_RET_USAGE;
	if (argc > 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
		return 1;

	if (fs_ls(argc >= 4 ? argv[3] : "/"))
		return 1;

	return 0;
}

int file_exists(const char *dev_type, const char *dev_part, const char *file,
		int fstype)
{
	if (fs_set_blk_dev(dev_type, dev_part, fstype))
		return 0;

	return fs_exists(file);
}

int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
		int fstype)
{
	unsigned long addr;
	const char *filename;
	loff_t bytes;
	loff_t pos;
	loff_t len;
	int ret;
	unsigned long time;

	if (argc < 6 || argc > 7)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], fstype))
		return 1;

	addr = simple_strtoul(argv[3], NULL, 16);
	filename = argv[4];
	bytes = simple_strtoul(argv[5], NULL, 16);
	if (argc >= 7)
		pos = simple_strtoul(argv[6], NULL, 16);
	else
		pos = 0;

	time = get_timer(0);
	ret = fs_write(filename, addr, pos, bytes, &len);
	time = get_timer(time);
	if (ret < 0)
		return 1;

	printf("%llu bytes written in %lu ms", len, time);
	if (time > 0) {
		puts(" (");
		print_size(div_u64(len, time) * 1000, "/s");
		puts(")");
	}
	puts("\n");

	return 0;
}

int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
		int fstype)
{
	int ret;
	char uuid[37];
	memset(uuid, 0, sizeof(uuid));

	if (argc < 3 || argc > 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], fstype))
		return 1;

	ret = fs_uuid(uuid);
	if (ret)
		return CMD_RET_FAILURE;

	if (argc == 4)
		env_set(argv[3], uuid);
	else
		printf("%s\n", uuid);

	return CMD_RET_SUCCESS;
}

int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	struct fstype_info *info;

	if (argc < 3 || argc > 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
		return 1;

	info = fs_get_info(fs_type);

	if (argc == 4)
		env_set(argv[3], info->name);
	else
		printf("%s\n", info->name);

	return CMD_RET_SUCCESS;
}

int do_rm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
	  int fstype)
{
	if (argc != 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], fstype))
		return 1;

	if (fs_unlink(argv[3]))
		return 1;

	return 0;
}

int do_mkdir(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
	     int fstype)
{
	int ret;

	if (argc != 4)
		return CMD_RET_USAGE;

	if (fs_set_blk_dev(argv[1], argv[2], fstype))
		return 1;

	ret = fs_mkdir(argv[3]);
	if (ret) {
		printf("** Unable to create a directory \"%s\" **\n", argv[3]);
		return 1;
	}

	return 0;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0
045fa1e1 SW	2	/*
045fa1e1 SW	3	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
045fa1e1 SW	4	*/
	5
	6	#include <config.h>
59e890ef	7	#include <errno.h>
045fa1e1	8	#include <common.h>
0eb25b61	9	#include <mapmem.h>
045fa1e1 SW	10	#include <part.h>
	11	#include <ext4fs.h>
	12	#include <fat.h>
	13	#include <fs.h>
92ccc96b	14	#include <sandboxfs.h>
251cee0d	15	#include <ubifs_uboot.h>
0c936ee3	16	#include <btrfs.h>
117e0507	17	#include <asm/io.h>
9e374e7b TR	18	#include <div64.h>
9e374e7b TR	19	#include <linux/math64.h>
045fa1e1	20
a1b231ce SW	21	DECLARE_GLOBAL_DATA_PTR;
a1b231ce SW	22
4101f687	23	static struct blk_desc *fs_dev_desc;
4bbcc965	24	static int fs_dev_part;
045fa1e1 SW	25	static disk_partition_t fs_partition;
	26	static int fs_type = FS_TYPE_ANY;
	27
4101f687	28	static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
2ded0d47	29	disk_partition_t *fs_partition)
436e2b73 SG	30	{
	31	printf(" Unrecognized filesystem type \n");
	32	return -1;
	33	}
	34
045fa1e1 SW	35	static inline int fs_ls_unsupported(const char *dirname)
045fa1e1 SW	36	{
045fa1e1 SW	37	return -1;
	38	}
	39
89191d62 RC	40	/* generic implementation of ls in terms of opendir/readdir/closedir */
	41	__maybe_unused
	42	static int fs_ls_generic(const char *dirname)
	43	{
	44	struct fs_dir_stream *dirs;
	45	struct fs_dirent *dent;
	46	int nfiles = 0, ndirs = 0;
	47
	48	dirs = fs_opendir(dirname);
	49	if (!dirs)
	50	return -errno;
	51
	52	while ((dent = fs_readdir(dirs))) {
	53	if (dent->type == FS_DT_DIR) {
	54	printf(" %s/\n", dent->name);
	55	ndirs++;
	56	} else {
	57	printf(" %8lld %s\n", dent->size, dent->name);
	58	nfiles++;
	59	}
	60	}
	61
	62	fs_closedir(dirs);
	63
	64	printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
	65
	66	return 0;
	67	}
	68
6152916a SW	69	static inline int fs_exists_unsupported(const char *filename)
	70	{
	71	return 0;
	72	}
	73
d455d878	74	static inline int fs_size_unsupported(const char filename, loff_t size)
cf659819 SW	75	{
	76	return -1;
	77	}
	78
117e0507	79	static inline int fs_read_unsupported(const char filename, void buf,
d455d878 SR	80	loff_t offset, loff_t len,
d455d878 SR	81	loff_t *actread)
045fa1e1	82	{
045fa1e1 SW	83	return -1;
	84	}
	85
a8f6ab52	86	static inline int fs_write_unsupported(const char filename, void buf,
d455d878 SR	87	loff_t offset, loff_t len,
d455d878 SR	88	loff_t *actwrite)
a8f6ab52 SG	89	{
	90	return -1;
	91	}
	92
436e2b73 SG	93	static inline void fs_close_unsupported(void)
	94	{
	95	}
	96
59e890ef CG	97	static inline int fs_uuid_unsupported(char *uuid_str)
	98	{
	99	return -1;
	100	}
	101
4bbcc965 RC	102	static inline int fs_opendir_unsupported(const char *filename,
	103	struct fs_dir_stream **dirs)
	104	{
	105	return -EACCES;
	106	}
	107
e2519daf AT	108	static inline int fs_unlink_unsupported(const char *filename)
	109	{
	110	return -1;
	111	}
	112
e7074cff AT	113	static inline int fs_mkdir_unsupported(const char *dirname)
	114	{
	115	return -1;
	116	}
	117
436e2b73	118	struct fstype_info {
045fa1e1	119	int fstype;
1a1ad8e0	120	char *name;
377202b5 SW	121	/*
	122	* Is it legal to pass NULL as .probe()'s fs_dev_desc parameter? This
	123	* should be false in most cases. For "virtual" filesystems which
	124	* aren't based on a U-Boot block device (e.g. sandbox), this can be
ca230b09	125	* set to true. This should also be true for the dummy entry at the end
377202b5 SW	126	* of fstypes[], since that is essentially a "virtual" (non-existent)
	127	* filesystem.
	128	*/
	129	bool null_dev_desc_ok;
4101f687	130	int (probe)(struct blk_desc fs_dev_desc,
2ded0d47	131	disk_partition_t *fs_partition);
436e2b73	132	int (ls)(const char dirname);
6152916a	133	int (exists)(const char filename);
d455d878 SR	134	int (size)(const char filename, loff_t *size);
	135	int (read)(const char filename, void *buf, loff_t offset,
	136	loff_t len, loff_t *actread);
	137	int (write)(const char filename, void *buf, loff_t offset,
	138	loff_t len, loff_t *actwrite);
436e2b73	139	void (*close)(void);
59e890ef	140	int (uuid)(char uuid_str);
4bbcc965 RC	141	/*
	142	* Open a directory stream. On success return 0 and directory
	143	* stream pointer via 'dirsp'. On error, return -errno. See
	144	* fs_opendir().
	145	*/
	146	int (opendir)(const char filename, struct fs_dir_stream **dirsp);
	147	/*
	148	* Read next entry from directory stream. On success return 0
	149	* and directory entry pointer via 'dentp'. On error return
	150	* -errno. See fs_readdir().
	151	*/
	152	int (readdir)(struct fs_dir_stream dirs, struct fs_dirent **dentp);
	153	/* see fs_closedir() */
	154	void (closedir)(struct fs_dir_stream dirs);
e2519daf	155	int (unlink)(const char filename);
e7074cff	156	int (mkdir)(const char dirname);
436e2b73 SG	157	};
	158
	159	static struct fstype_info fstypes[] = {
	160	#ifdef CONFIG_FS_FAT
045fa1e1 SW	161	{
045fa1e1 SW	162	.fstype = FS_TYPE_FAT,
1a1ad8e0	163	.name = "fat",
377202b5	164	.null_dev_desc_ok = false,
e6d52415 SG	165	.probe = fat_set_blk_dev,
e6d52415 SG	166	.close = fat_close,
89191d62	167	.ls = fs_ls_generic,
b7b5f319	168	.exists = fat_exists,
cf659819	169	.size = fat_size,
e6d52415	170	.read = fat_read_file,
d455d878 SR	171	#ifdef CONFIG_FAT_WRITE
d455d878 SR	172	.write = file_fat_write,
f8240ce9	173	.unlink = fat_unlink,
31a18d57	174	.mkdir = fat_mkdir,
d455d878	175	#else
bd6fb31f	176	.write = fs_write_unsupported,
f8240ce9	177	.unlink = fs_unlink_unsupported,
31a18d57	178	.mkdir = fs_mkdir_unsupported,
d455d878	179	#endif
59e890ef	180	.uuid = fs_uuid_unsupported,
89191d62 RC	181	.opendir = fat_opendir,
	182	.readdir = fat_readdir,
	183	.closedir = fat_closedir,
045fa1e1	184	},
436e2b73 SG	185	#endif
436e2b73 SG	186	#ifdef CONFIG_FS_EXT4
045fa1e1 SW	187	{
045fa1e1 SW	188	.fstype = FS_TYPE_EXT,
1a1ad8e0	189	.name = "ext4",
377202b5	190	.null_dev_desc_ok = false,
e6d52415 SG	191	.probe = ext4fs_probe,
e6d52415 SG	192	.close = ext4fs_close,
436e2b73	193	.ls = ext4fs_ls,
55af5c93	194	.exists = ext4fs_exists,
cf659819	195	.size = ext4fs_size,
e6d52415	196	.read = ext4_read_file,
d455d878 SR	197	#ifdef CONFIG_CMD_EXT4_WRITE
	198	.write = ext4_write_file,
	199	#else
bd6fb31f	200	.write = fs_write_unsupported,
d455d878	201	#endif
59e890ef	202	.uuid = ext4fs_uuid,
4bbcc965	203	.opendir = fs_opendir_unsupported,
e2519daf	204	.unlink = fs_unlink_unsupported,
e7074cff	205	.mkdir = fs_mkdir_unsupported,
436e2b73	206	},
92ccc96b SG	207	#endif
	208	#ifdef CONFIG_SANDBOX
	209	{
	210	.fstype = FS_TYPE_SANDBOX,
1a1ad8e0	211	.name = "sandbox",
377202b5	212	.null_dev_desc_ok = true,
92ccc96b SG	213	.probe = sandbox_fs_set_blk_dev,
	214	.close = sandbox_fs_close,
	215	.ls = sandbox_fs_ls,
0a30aa1e	216	.exists = sandbox_fs_exists,
cf659819	217	.size = sandbox_fs_size,
92ccc96b	218	.read = fs_read_sandbox,
7eb2c8d5	219	.write = fs_write_sandbox,
59e890ef	220	.uuid = fs_uuid_unsupported,
4bbcc965	221	.opendir = fs_opendir_unsupported,
e2519daf	222	.unlink = fs_unlink_unsupported,
e7074cff	223	.mkdir = fs_mkdir_unsupported,
92ccc96b	224	},
251cee0d HG	225	#endif
	226	#ifdef CONFIG_CMD_UBIFS
	227	{
	228	.fstype = FS_TYPE_UBIFS,
	229	.name = "ubifs",
	230	.null_dev_desc_ok = true,
	231	.probe = ubifs_set_blk_dev,
	232	.close = ubifs_close,
	233	.ls = ubifs_ls,
	234	.exists = ubifs_exists,
	235	.size = ubifs_size,
	236	.read = ubifs_read,
	237	.write = fs_write_unsupported,
	238	.uuid = fs_uuid_unsupported,
4bbcc965	239	.opendir = fs_opendir_unsupported,
e2519daf	240	.unlink = fs_unlink_unsupported,
e7074cff	241	.mkdir = fs_mkdir_unsupported,
251cee0d	242	},
0c936ee3 MB	243	#endif
	244	#ifdef CONFIG_FS_BTRFS
	245	{
	246	.fstype = FS_TYPE_BTRFS,
	247	.name = "btrfs",
	248	.null_dev_desc_ok = false,
	249	.probe = btrfs_probe,
	250	.close = btrfs_close,
	251	.ls = btrfs_ls,
	252	.exists = btrfs_exists,
	253	.size = btrfs_size,
	254	.read = btrfs_read,
	255	.write = fs_write_unsupported,
	256	.uuid = btrfs_uuid,
38fc683d	257	.opendir = fs_opendir_unsupported,
e2519daf	258	.unlink = fs_unlink_unsupported,
e7074cff	259	.mkdir = fs_mkdir_unsupported,
0c936ee3	260	},
436e2b73 SG	261	#endif
	262	{
	263	.fstype = FS_TYPE_ANY,
1a1ad8e0	264	.name = "unsupported",
377202b5	265	.null_dev_desc_ok = true,
436e2b73 SG	266	.probe = fs_probe_unsupported,
	267	.close = fs_close_unsupported,
	268	.ls = fs_ls_unsupported,
6152916a	269	.exists = fs_exists_unsupported,
cf659819	270	.size = fs_size_unsupported,
436e2b73	271	.read = fs_read_unsupported,
a8f6ab52	272	.write = fs_write_unsupported,
59e890ef	273	.uuid = fs_uuid_unsupported,
4bbcc965	274	.opendir = fs_opendir_unsupported,
e2519daf	275	.unlink = fs_unlink_unsupported,
e7074cff	276	.mkdir = fs_mkdir_unsupported,
045fa1e1 SW	277	},
	278	};
	279
c6f548d2 SG	280	static struct fstype_info *fs_get_info(int fstype)
	281	{
	282	struct fstype_info *info;
	283	int i;
	284
	285	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
	286	if (fstype == info->fstype)
	287	return info;
	288	}
	289
	290	/* Return the 'unsupported' sentinel */
	291	return info;
	292	}
	293
0d488e8f AK	294	/**
	295	* fs_get_type_name() - Get type of current filesystem
	296	*
	297	* Return: Pointer to filesystem name
	298	*
	299	* Returns a string describing the current filesystem, or the sentinel
	300	* "unsupported" for any unrecognised filesystem.
	301	*/
	302	const char *fs_get_type_name(void)
	303	{
	304	return fs_get_info(fs_type)->name;
	305	}
	306
045fa1e1 SW	307	int fs_set_blk_dev(const char ifname, const char dev_part_str, int fstype)
045fa1e1 SW	308	{
436e2b73	309	struct fstype_info *info;
045fa1e1	310	int part, i;
a1b231ce SW	311	#ifdef CONFIG_NEEDS_MANUAL_RELOC
	312	static int relocated;
	313
	314	if (!relocated) {
436e2b73 SG	315	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
436e2b73 SG	316	i++, info++) {
1a1ad8e0	317	info->name += gd->reloc_off;
436e2b73 SG	318	info->probe += gd->reloc_off;
	319	info->close += gd->reloc_off;
	320	info->ls += gd->reloc_off;
	321	info->read += gd->reloc_off;
a8f6ab52	322	info->write += gd->reloc_off;
436e2b73	323	}
a1b231ce SW	324	relocated = 1;
	325	}
	326	#endif
045fa1e1	327
e35929e4	328	part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
045fa1e1 SW	329	&fs_partition, 1);
	330	if (part < 0)
	331	return -1;
	332
436e2b73 SG	333	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
	334	if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
	335	fstype != info->fstype)
045fa1e1 SW	336	continue;
045fa1e1 SW	337
377202b5 SW	338	if (!fs_dev_desc && !info->null_dev_desc_ok)
	339	continue;
	340
4bbcc965 RC	341	if (!info->probe(fs_dev_desc, &fs_partition)) {
	342	fs_type = info->fstype;
	343	fs_dev_part = part;
	344	return 0;
	345	}
	346	}
	347
	348	return -1;
	349	}
	350
	351	/* set current blk device w/ blk_desc + partition # */
	352	int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
	353	{
	354	struct fstype_info *info;
	355	int ret, i;
	356
	357	if (part >= 1)
	358	ret = part_get_info(desc, part, &fs_partition);
	359	else
	360	ret = part_get_info_whole_disk(desc, &fs_partition);
	361	if (ret)
	362	return ret;
	363	fs_dev_desc = desc;
	364
	365	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
2ded0d47	366	if (!info->probe(fs_dev_desc, &fs_partition)) {
436e2b73	367	fs_type = info->fstype;
b0c78d8f	368	fs_dev_part = part;
045fa1e1 SW	369	return 0;
	370	}
	371	}
	372
045fa1e1 SW	373	return -1;
	374	}
	375
	376	static void fs_close(void)
	377	{
c6f548d2	378	struct fstype_info *info = fs_get_info(fs_type);
045fa1e1	379
c6f548d2	380	info->close();
e6d52415	381
045fa1e1 SW	382	fs_type = FS_TYPE_ANY;
	383	}
	384
59e890ef CG	385	int fs_uuid(char *uuid_str)
	386	{
	387	struct fstype_info *info = fs_get_info(fs_type);
	388
	389	return info->uuid(uuid_str);
	390	}
	391
045fa1e1 SW	392	int fs_ls(const char *dirname)
	393	{
	394	int ret;
	395
c6f548d2 SG	396	struct fstype_info *info = fs_get_info(fs_type);
	397
	398	ret = info->ls(dirname);
045fa1e1	399
e6d52415	400	fs_type = FS_TYPE_ANY;
045fa1e1 SW	401	fs_close();
	402
	403	return ret;
	404	}
	405
6152916a SW	406	int fs_exists(const char *filename)
	407	{
	408	int ret;
	409
	410	struct fstype_info *info = fs_get_info(fs_type);
	411
	412	ret = info->exists(filename);
	413
	414	fs_close();
	415
	416	return ret;
	417	}
	418
d455d878	419	int fs_size(const char filename, loff_t size)
cf659819 SW	420	{
	421	int ret;
	422
	423	struct fstype_info *info = fs_get_info(fs_type);
	424
d455d878	425	ret = info->size(filename, size);
cf659819 SW	426
	427	fs_close();
	428
	429	return ret;
	430	}
	431
d455d878 SR	432	int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
d455d878 SR	433	loff_t *actread)
045fa1e1	434	{
c6f548d2	435	struct fstype_info *info = fs_get_info(fs_type);
117e0507	436	void *buf;
045fa1e1 SW	437	int ret;
045fa1e1 SW	438
117e0507 SG	439	/*
	440	* We don't actually know how many bytes are being read, since len==0
	441	* means read the whole file.
	442	*/
	443	buf = map_sysmem(addr, len);
d455d878	444	ret = info->read(filename, buf, offset, len, actread);
117e0507	445	unmap_sysmem(buf);
045fa1e1	446
c6f548d2	447	/* If we requested a specific number of bytes, check we got it */
7a3e70cf	448	if (ret == 0 && len && *actread != len)
a327bde7	449	debug(" %s shorter than offset + len \n", filename);
045fa1e1 SW	450	fs_close();
	451
	452	return ret;
	453	}
	454
d455d878 SR	455	int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
d455d878 SR	456	loff_t *actwrite)
a8f6ab52 SG	457	{
	458	struct fstype_info *info = fs_get_info(fs_type);
	459	void *buf;
	460	int ret;
	461
a8f6ab52	462	buf = map_sysmem(addr, len);
d455d878	463	ret = info->write(filename, buf, offset, len, actwrite);
a8f6ab52 SG	464	unmap_sysmem(buf);
a8f6ab52 SG	465
d455d878	466	if (ret < 0 && len != *actwrite) {
a8f6ab52 SG	467	printf(" Unable to write file %s \n", filename);
	468	ret = -1;
	469	}
	470	fs_close();
	471
	472	return ret;
	473	}
	474
4bbcc965 RC	475	struct fs_dir_stream fs_opendir(const char filename)
	476	{
	477	struct fstype_info *info = fs_get_info(fs_type);
	478	struct fs_dir_stream *dirs = NULL;
	479	int ret;
	480
	481	ret = info->opendir(filename, &dirs);
	482	fs_close();
	483	if (ret) {
	484	errno = -ret;
	485	return NULL;
	486	}
	487
	488	dirs->desc = fs_dev_desc;
	489	dirs->part = fs_dev_part;
	490
	491	return dirs;
	492	}
	493
	494	struct fs_dirent fs_readdir(struct fs_dir_stream dirs)
	495	{
	496	struct fstype_info *info;
	497	struct fs_dirent *dirent;
	498	int ret;
	499
	500	fs_set_blk_dev_with_part(dirs->desc, dirs->part);
	501	info = fs_get_info(fs_type);
	502
	503	ret = info->readdir(dirs, &dirent);
	504	fs_close();
	505	if (ret) {
	506	errno = -ret;
	507	return NULL;
	508	}
	509
	510	return dirent;
	511	}
	512
	513	void fs_closedir(struct fs_dir_stream *dirs)
	514	{
	515	struct fstype_info *info;
	516
	517	if (!dirs)
	518	return;
	519
	520	fs_set_blk_dev_with_part(dirs->desc, dirs->part);
	521	info = fs_get_info(fs_type);
	522
	523	info->closedir(dirs);
	524	fs_close();
	525	}
	526
e2519daf AT	527	int fs_unlink(const char *filename)
	528	{
	529	int ret;
	530
	531	struct fstype_info *info = fs_get_info(fs_type);
	532
	533	ret = info->unlink(filename);
	534
	535	fs_type = FS_TYPE_ANY;
	536	fs_close();
	537
	538	return ret;
	539	}
4bbcc965	540
e7074cff AT	541	int fs_mkdir(const char *dirname)
	542	{
	543	int ret;
	544
	545	struct fstype_info *info = fs_get_info(fs_type);
	546
	547	ret = info->mkdir(dirname);
	548
	549	fs_type = FS_TYPE_ANY;
	550	fs_close();
	551
	552	return ret;
	553	}
	554
cf659819 SW	555	int do_size(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
	556	int fstype)
	557	{
d455d878	558	loff_t size;
cf659819 SW	559
	560	if (argc != 4)
	561	return CMD_RET_USAGE;
	562
	563	if (fs_set_blk_dev(argv[1], argv[2], fstype))
	564	return 1;
	565
d455d878	566	if (fs_size(argv[3], &size) < 0)
cf659819 SW	567	return CMD_RET_FAILURE;
cf659819 SW	568
018f5303	569	env_set_hex("filesize", size);
cf659819 SW	570
	571	return 0;
	572	}
	573
f9b55e22	574	int do_load(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
b770e88a	575	int fstype)
045fa1e1 SW	576	{
	577	unsigned long addr;
	578	const char *addr_str;
	579	const char *filename;
d455d878 SR	580	loff_t bytes;
	581	loff_t pos;
	582	loff_t len_read;
	583	int ret;
da1fd96c	584	unsigned long time;
949bbd7c	585	char *ep;
045fa1e1	586
e9b0f99e SW	587	if (argc < 2)
	588	return CMD_RET_USAGE;
	589	if (argc > 7)
045fa1e1 SW	590	return CMD_RET_USAGE;
045fa1e1 SW	591
e9b0f99e	592	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
045fa1e1 SW	593	return 1;
	594
	595	if (argc >= 4) {
949bbd7c PM	596	addr = simple_strtoul(argv[3], &ep, 16);
	597	if (ep == argv[3] \|\| *ep != '\0')
	598	return CMD_RET_USAGE;
045fa1e1	599	} else {
00caae6d	600	addr_str = env_get("loadaddr");
045fa1e1 SW	601	if (addr_str != NULL)
	602	addr = simple_strtoul(addr_str, NULL, 16);
	603	else
	604	addr = CONFIG_SYS_LOAD_ADDR;
	605	}
	606	if (argc >= 5) {
	607	filename = argv[4];
	608	} else {
00caae6d	609	filename = env_get("bootfile");
045fa1e1 SW	610	if (!filename) {
	611	puts(" No boot file defined \n");
	612	return 1;
	613	}
	614	}
	615	if (argc >= 6)
b770e88a	616	bytes = simple_strtoul(argv[5], NULL, 16);
045fa1e1 SW	617	else
	618	bytes = 0;
	619	if (argc >= 7)
b770e88a	620	pos = simple_strtoul(argv[6], NULL, 16);
045fa1e1 SW	621	else
	622	pos = 0;
	623
da1fd96c	624	time = get_timer(0);
d455d878	625	ret = fs_read(filename, addr, pos, bytes, &len_read);
da1fd96c	626	time = get_timer(time);
d455d878	627	if (ret < 0)
045fa1e1 SW	628	return 1;
045fa1e1 SW	629
d455d878	630	printf("%llu bytes read in %lu ms", len_read, time);
da1fd96c AB	631	if (time > 0) {
da1fd96c AB	632	puts(" (");
9e374e7b	633	print_size(div_u64(len_read, time) * 1000, "/s");
da1fd96c AB	634	puts(")");
	635	}
	636	puts("\n");
045fa1e1	637
018f5303 SG	638	env_set_hex("fileaddr", addr);
018f5303 SG	639	env_set_hex("filesize", len_read);
045fa1e1 SW	640
	641	return 0;
	642	}
	643
	644	int do_ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
	645	int fstype)
	646	{
	647	if (argc < 2)
	648	return CMD_RET_USAGE;
e9b0f99e SW	649	if (argc > 4)
e9b0f99e SW	650	return CMD_RET_USAGE;
045fa1e1 SW	651
	652	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
	653	return 1;
	654
e9b0f99e	655	if (fs_ls(argc >= 4 ? argv[3] : "/"))
045fa1e1 SW	656	return 1;
	657
	658	return 0;
	659	}
a8f6ab52	660
6152916a SW	661	int file_exists(const char dev_type, const char dev_part, const char *file,
	662	int fstype)
	663	{
	664	if (fs_set_blk_dev(dev_type, dev_part, fstype))
	665	return 0;
	666
	667	return fs_exists(file);
	668	}
	669
a8f6ab52	670	int do_save(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
b770e88a	671	int fstype)
a8f6ab52 SG	672	{
	673	unsigned long addr;
	674	const char *filename;
d455d878 SR	675	loff_t bytes;
	676	loff_t pos;
	677	loff_t len;
	678	int ret;
a8f6ab52 SG	679	unsigned long time;
	680
	681	if (argc < 6 \|\| argc > 7)
	682	return CMD_RET_USAGE;
	683
	684	if (fs_set_blk_dev(argv[1], argv[2], fstype))
	685	return 1;
	686
d455d878 SR	687	addr = simple_strtoul(argv[3], NULL, 16);
d455d878 SR	688	filename = argv[4];
b770e88a	689	bytes = simple_strtoul(argv[5], NULL, 16);
a8f6ab52	690	if (argc >= 7)
b770e88a	691	pos = simple_strtoul(argv[6], NULL, 16);
a8f6ab52 SG	692	else
	693	pos = 0;
	694
	695	time = get_timer(0);
d455d878	696	ret = fs_write(filename, addr, pos, bytes, &len);
a8f6ab52	697	time = get_timer(time);
d455d878	698	if (ret < 0)
a8f6ab52 SG	699	return 1;
a8f6ab52 SG	700
d455d878	701	printf("%llu bytes written in %lu ms", len, time);
a8f6ab52 SG	702	if (time > 0) {
a8f6ab52 SG	703	puts(" (");
9e374e7b	704	print_size(div_u64(len, time) * 1000, "/s");
a8f6ab52 SG	705	puts(")");
	706	}
	707	puts("\n");
	708
	709	return 0;
	710	}
59e890ef CG	711
	712	int do_fs_uuid(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
	713	int fstype)
	714	{
	715	int ret;
	716	char uuid[37];
	717	memset(uuid, 0, sizeof(uuid));
	718
	719	if (argc < 3 \|\| argc > 4)
	720	return CMD_RET_USAGE;
	721
	722	if (fs_set_blk_dev(argv[1], argv[2], fstype))
	723	return 1;
	724
	725	ret = fs_uuid(uuid);
	726	if (ret)
	727	return CMD_RET_FAILURE;
	728
	729	if (argc == 4)
382bee57	730	env_set(argv[3], uuid);
59e890ef CG	731	else
	732	printf("%s\n", uuid);
	733
	734	return CMD_RET_SUCCESS;
	735	}
1a1ad8e0 SS	736
	737	int do_fs_type(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	738	{
	739	struct fstype_info *info;
	740
	741	if (argc < 3 \|\| argc > 4)
	742	return CMD_RET_USAGE;
	743
	744	if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
	745	return 1;
	746
	747	info = fs_get_info(fs_type);
	748
	749	if (argc == 4)
382bee57	750	env_set(argv[3], info->name);
1a1ad8e0 SS	751	else
	752	printf("%s\n", info->name);
	753
	754	return CMD_RET_SUCCESS;
	755	}
	756
e2519daf AT	757	int do_rm(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
	758	int fstype)
	759	{
	760	if (argc != 4)
	761	return CMD_RET_USAGE;
	762
	763	if (fs_set_blk_dev(argv[1], argv[2], fstype))
	764	return 1;
	765
	766	if (fs_unlink(argv[3]))
	767	return 1;
	768
	769	return 0;
	770	}
	771
e7074cff AT	772	int do_mkdir(cmd_tbl_t cmdtp, int flag, int argc, char const argv[],
	773	int fstype)
	774	{
	775	int ret;
	776
	777	if (argc != 4)
	778	return CMD_RET_USAGE;
	779
	780	if (fs_set_blk_dev(argv[1], argv[2], fstype))
	781	return 1;
	782
	783	ret = fs_mkdir(argv[3]);
	784	if (ret) {
	785	printf(" Unable to create a directory \"%s\" \n", argv[3]);
	786	return 1;
	787	}
	788
	789	return 0;
	790	}