1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
14 #include <sandboxfs.h>
15 #include <ubifs_uboot.h>
19 #include <linux/math64.h>
21 DECLARE_GLOBAL_DATA_PTR;
23 static struct blk_desc *fs_dev_desc;
24 static int fs_dev_part;
25 static disk_partition_t fs_partition;
26 static int fs_type = FS_TYPE_ANY;
28 static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
29 disk_partition_t *fs_partition)
31 printf("** Unrecognized filesystem type **\n");
35 static inline int fs_ls_unsupported(const char *dirname)
40 /* generic implementation of ls in terms of opendir/readdir/closedir */
42 static int fs_ls_generic(const char *dirname)
44 struct fs_dir_stream *dirs;
45 struct fs_dirent *dent;
46 int nfiles = 0, ndirs = 0;
48 dirs = fs_opendir(dirname);
52 while ((dent = fs_readdir(dirs))) {
53 if (dent->type == FS_DT_DIR) {
54 printf(" %s/\n", dent->name);
57 printf(" %8lld %s\n", dent->size, dent->name);
64 printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
69 static inline int fs_exists_unsupported(const char *filename)
74 static inline int fs_size_unsupported(const char *filename, loff_t *size)
79 static inline int fs_read_unsupported(const char *filename, void *buf,
80 loff_t offset, loff_t len,
86 static inline int fs_write_unsupported(const char *filename, void *buf,
87 loff_t offset, loff_t len,
93 static inline void fs_close_unsupported(void)
97 static inline int fs_uuid_unsupported(char *uuid_str)
102 static inline int fs_opendir_unsupported(const char *filename,
103 struct fs_dir_stream **dirs)
112 * Is it legal to pass NULL as .probe()'s fs_dev_desc parameter? This
113 * should be false in most cases. For "virtual" filesystems which
114 * aren't based on a U-Boot block device (e.g. sandbox), this can be
115 * set to true. This should also be true for the dumm entry at the end
116 * of fstypes[], since that is essentially a "virtual" (non-existent)
119 bool null_dev_desc_ok;
120 int (*probe)(struct blk_desc *fs_dev_desc,
121 disk_partition_t *fs_partition);
122 int (*ls)(const char *dirname);
123 int (*exists)(const char *filename);
124 int (*size)(const char *filename, loff_t *size);
125 int (*read)(const char *filename, void *buf, loff_t offset,
126 loff_t len, loff_t *actread);
127 int (*write)(const char *filename, void *buf, loff_t offset,
128 loff_t len, loff_t *actwrite);
130 int (*uuid)(char *uuid_str);
132 * Open a directory stream. On success return 0 and directory
133 * stream pointer via 'dirsp'. On error, return -errno. See
136 int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
138 * Read next entry from directory stream. On success return 0
139 * and directory entry pointer via 'dentp'. On error return
140 * -errno. See fs_readdir().
142 int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
143 /* see fs_closedir() */
144 void (*closedir)(struct fs_dir_stream *dirs);
147 static struct fstype_info fstypes[] = {
150 .fstype = FS_TYPE_FAT,
152 .null_dev_desc_ok = false,
153 .probe = fat_set_blk_dev,
156 .exists = fat_exists,
158 .read = fat_read_file,
159 #ifdef CONFIG_FAT_WRITE
160 .write = file_fat_write,
162 .write = fs_write_unsupported,
164 .uuid = fs_uuid_unsupported,
165 .opendir = fat_opendir,
166 .readdir = fat_readdir,
167 .closedir = fat_closedir,
170 #ifdef CONFIG_FS_EXT4
172 .fstype = FS_TYPE_EXT,
174 .null_dev_desc_ok = false,
175 .probe = ext4fs_probe,
176 .close = ext4fs_close,
178 .exists = ext4fs_exists,
180 .read = ext4_read_file,
181 #ifdef CONFIG_CMD_EXT4_WRITE
182 .write = ext4_write_file,
184 .write = fs_write_unsupported,
187 .opendir = fs_opendir_unsupported,
190 #ifdef CONFIG_SANDBOX
192 .fstype = FS_TYPE_SANDBOX,
194 .null_dev_desc_ok = true,
195 .probe = sandbox_fs_set_blk_dev,
196 .close = sandbox_fs_close,
198 .exists = sandbox_fs_exists,
199 .size = sandbox_fs_size,
200 .read = fs_read_sandbox,
201 .write = fs_write_sandbox,
202 .uuid = fs_uuid_unsupported,
203 .opendir = fs_opendir_unsupported,
206 #ifdef CONFIG_CMD_UBIFS
208 .fstype = FS_TYPE_UBIFS,
210 .null_dev_desc_ok = true,
211 .probe = ubifs_set_blk_dev,
212 .close = ubifs_close,
214 .exists = ubifs_exists,
217 .write = fs_write_unsupported,
218 .uuid = fs_uuid_unsupported,
219 .opendir = fs_opendir_unsupported,
222 #ifdef CONFIG_FS_BTRFS
224 .fstype = FS_TYPE_BTRFS,
226 .null_dev_desc_ok = false,
227 .probe = btrfs_probe,
228 .close = btrfs_close,
230 .exists = btrfs_exists,
233 .write = fs_write_unsupported,
235 .opendir = fs_opendir_unsupported,
239 .fstype = FS_TYPE_ANY,
240 .name = "unsupported",
241 .null_dev_desc_ok = true,
242 .probe = fs_probe_unsupported,
243 .close = fs_close_unsupported,
244 .ls = fs_ls_unsupported,
245 .exists = fs_exists_unsupported,
246 .size = fs_size_unsupported,
247 .read = fs_read_unsupported,
248 .write = fs_write_unsupported,
249 .uuid = fs_uuid_unsupported,
250 .opendir = fs_opendir_unsupported,
254 static struct fstype_info *fs_get_info(int fstype)
256 struct fstype_info *info;
259 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
260 if (fstype == info->fstype)
264 /* Return the 'unsupported' sentinel */
269 * fs_get_type_name() - Get type of current filesystem
271 * Return: Pointer to filesystem name
273 * Returns a string describing the current filesystem, or the sentinel
274 * "unsupported" for any unrecognised filesystem.
276 const char *fs_get_type_name(void)
278 return fs_get_info(fs_type)->name;
281 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
283 struct fstype_info *info;
285 #ifdef CONFIG_NEEDS_MANUAL_RELOC
286 static int relocated;
289 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
291 info->name += gd->reloc_off;
292 info->probe += gd->reloc_off;
293 info->close += gd->reloc_off;
294 info->ls += gd->reloc_off;
295 info->read += gd->reloc_off;
296 info->write += gd->reloc_off;
302 part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
307 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
308 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
309 fstype != info->fstype)
312 if (!fs_dev_desc && !info->null_dev_desc_ok)
315 if (!info->probe(fs_dev_desc, &fs_partition)) {
316 fs_type = info->fstype;
325 /* set current blk device w/ blk_desc + partition # */
326 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
328 struct fstype_info *info;
332 ret = part_get_info(desc, part, &fs_partition);
334 ret = part_get_info_whole_disk(desc, &fs_partition);
339 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
340 if (!info->probe(fs_dev_desc, &fs_partition)) {
341 fs_type = info->fstype;
349 static void fs_close(void)
351 struct fstype_info *info = fs_get_info(fs_type);
355 fs_type = FS_TYPE_ANY;
358 int fs_uuid(char *uuid_str)
360 struct fstype_info *info = fs_get_info(fs_type);
362 return info->uuid(uuid_str);
365 int fs_ls(const char *dirname)
369 struct fstype_info *info = fs_get_info(fs_type);
371 ret = info->ls(dirname);
373 fs_type = FS_TYPE_ANY;
379 int fs_exists(const char *filename)
383 struct fstype_info *info = fs_get_info(fs_type);
385 ret = info->exists(filename);
392 int fs_size(const char *filename, loff_t *size)
396 struct fstype_info *info = fs_get_info(fs_type);
398 ret = info->size(filename, size);
405 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
408 struct fstype_info *info = fs_get_info(fs_type);
413 * We don't actually know how many bytes are being read, since len==0
414 * means read the whole file.
416 buf = map_sysmem(addr, len);
417 ret = info->read(filename, buf, offset, len, actread);
420 /* If we requested a specific number of bytes, check we got it */
421 if (ret == 0 && len && *actread != len)
422 debug("** %s shorter than offset + len **\n", filename);
428 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
431 struct fstype_info *info = fs_get_info(fs_type);
435 buf = map_sysmem(addr, len);
436 ret = info->write(filename, buf, offset, len, actwrite);
439 if (ret < 0 && len != *actwrite) {
440 printf("** Unable to write file %s **\n", filename);
448 struct fs_dir_stream *fs_opendir(const char *filename)
450 struct fstype_info *info = fs_get_info(fs_type);
451 struct fs_dir_stream *dirs = NULL;
454 ret = info->opendir(filename, &dirs);
461 dirs->desc = fs_dev_desc;
462 dirs->part = fs_dev_part;
467 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
469 struct fstype_info *info;
470 struct fs_dirent *dirent;
473 fs_set_blk_dev_with_part(dirs->desc, dirs->part);
474 info = fs_get_info(fs_type);
476 ret = info->readdir(dirs, &dirent);
486 void fs_closedir(struct fs_dir_stream *dirs)
488 struct fstype_info *info;
493 fs_set_blk_dev_with_part(dirs->desc, dirs->part);
494 info = fs_get_info(fs_type);
496 info->closedir(dirs);
501 int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
507 return CMD_RET_USAGE;
509 if (fs_set_blk_dev(argv[1], argv[2], fstype))
512 if (fs_size(argv[3], &size) < 0)
513 return CMD_RET_FAILURE;
515 env_set_hex("filesize", size);
520 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
524 const char *addr_str;
525 const char *filename;
534 return CMD_RET_USAGE;
536 return CMD_RET_USAGE;
538 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
542 addr = simple_strtoul(argv[3], &ep, 16);
543 if (ep == argv[3] || *ep != '\0')
544 return CMD_RET_USAGE;
546 addr_str = env_get("loadaddr");
547 if (addr_str != NULL)
548 addr = simple_strtoul(addr_str, NULL, 16);
550 addr = CONFIG_SYS_LOAD_ADDR;
555 filename = env_get("bootfile");
557 puts("** No boot file defined **\n");
562 bytes = simple_strtoul(argv[5], NULL, 16);
566 pos = simple_strtoul(argv[6], NULL, 16);
571 ret = fs_read(filename, addr, pos, bytes, &len_read);
572 time = get_timer(time);
576 printf("%llu bytes read in %lu ms", len_read, time);
579 print_size(div_u64(len_read, time) * 1000, "/s");
584 env_set_hex("fileaddr", addr);
585 env_set_hex("filesize", len_read);
590 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
594 return CMD_RET_USAGE;
596 return CMD_RET_USAGE;
598 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
601 if (fs_ls(argc >= 4 ? argv[3] : "/"))
607 int file_exists(const char *dev_type, const char *dev_part, const char *file,
610 if (fs_set_blk_dev(dev_type, dev_part, fstype))
613 return fs_exists(file);
616 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
620 const char *filename;
627 if (argc < 6 || argc > 7)
628 return CMD_RET_USAGE;
630 if (fs_set_blk_dev(argv[1], argv[2], fstype))
633 addr = simple_strtoul(argv[3], NULL, 16);
635 bytes = simple_strtoul(argv[5], NULL, 16);
637 pos = simple_strtoul(argv[6], NULL, 16);
642 ret = fs_write(filename, addr, pos, bytes, &len);
643 time = get_timer(time);
647 printf("%llu bytes written in %lu ms", len, time);
650 print_size(div_u64(len, time) * 1000, "/s");
658 int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
663 memset(uuid, 0, sizeof(uuid));
665 if (argc < 3 || argc > 4)
666 return CMD_RET_USAGE;
668 if (fs_set_blk_dev(argv[1], argv[2], fstype))
673 return CMD_RET_FAILURE;
676 env_set(argv[3], uuid);
678 printf("%s\n", uuid);
680 return CMD_RET_SUCCESS;
683 int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
685 struct fstype_info *info;
687 if (argc < 3 || argc > 4)
688 return CMD_RET_USAGE;
690 if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
693 info = fs_get_info(fs_type);
696 env_set(argv[3], info->name);
698 printf("%s\n", info->name);
700 return CMD_RET_SUCCESS;