X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=fs%2Ffs.c;h=736ebef4a93917fc84590d2739a73cc9f2793138;hb=96c9bf7e2ae2ac331574cf5017a0381d184a45a8;hp=b2d6a532330cb2cc14d77a5490971b6bcebd1d0b;hpb=e573bdb324c78fac56655a493bea843842c9d9f8;p=oweals%2Fu-boot.git
diff --git a/fs/fs.c b/fs/fs.c
index b2d6a53233..736ebef4a9 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1,17 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see .
*/
#include
@@ -24,17 +13,19 @@
#include
#include
#include
+#include
#include
#include
#include
DECLARE_GLOBAL_DATA_PTR;
-static block_dev_desc_t *fs_dev_desc;
+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(block_dev_desc_t *fs_dev_desc,
+static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
disk_partition_t *fs_partition)
{
printf("** Unrecognized filesystem type **\n");
@@ -46,6 +37,35 @@ 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;
@@ -70,6 +90,11 @@ static inline int fs_write_unsupported(const char *filename, void *buf,
return -1;
}
+static inline int fs_ln_unsupported(const char *filename, const char *target)
+{
+ return -1;
+}
+
static inline void fs_close_unsupported(void)
{
}
@@ -79,6 +104,22 @@ 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;
@@ -86,12 +127,12 @@ struct fstype_info {
* 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 dumm entry at the end
+ * 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)(block_dev_desc_t *fs_dev_desc,
+ int (*probe)(struct blk_desc *fs_dev_desc,
disk_partition_t *fs_partition);
int (*ls)(const char *dirname);
int (*exists)(const char *filename);
@@ -102,6 +143,23 @@ struct fstype_info {
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);
+ int (*ln)(const char *filename, const char *target);
};
static struct fstype_info fstypes[] = {
@@ -112,19 +170,28 @@ static struct fstype_info fstypes[] = {
.null_dev_desc_ok = false,
.probe = fat_set_blk_dev,
.close = fat_close,
- .ls = file_fat_ls,
+ .ls = fs_ls_generic,
.exists = fat_exists,
.size = fat_size,
.read = fat_read_file,
-#ifdef CONFIG_FAT_WRITE
+#if CONFIG_IS_ENABLED(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,
+ .ln = fs_ln_unsupported,
},
#endif
-#ifdef CONFIG_FS_EXT4
+
+#if CONFIG_IS_ENABLED(FS_EXT4)
{
.fstype = FS_TYPE_EXT,
.name = "ext4",
@@ -137,10 +204,15 @@ static struct fstype_info fstypes[] = {
.read = ext4_read_file,
#ifdef CONFIG_CMD_EXT4_WRITE
.write = ext4_write_file,
+ .ln = ext4fs_create_link,
#else
.write = fs_write_unsupported,
+ .ln = fs_ln_unsupported,
#endif
.uuid = ext4fs_uuid,
+ .opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
#endif
#ifdef CONFIG_SANDBOX
@@ -156,6 +228,10 @@ static struct fstype_info fstypes[] = {
.read = fs_read_sandbox,
.write = fs_write_sandbox,
.uuid = fs_uuid_unsupported,
+ .opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
+ .ln = fs_ln_unsupported,
},
#endif
#ifdef CONFIG_CMD_UBIFS
@@ -171,6 +247,29 @@ static struct fstype_info fstypes[] = {
.read = ubifs_read,
.write = fs_write_unsupported,
.uuid = fs_uuid_unsupported,
+ .opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
+ .ln = fs_ln_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,
+ .ln = fs_ln_unsupported,
},
#endif
{
@@ -185,6 +284,10 @@ static struct fstype_info fstypes[] = {
.read = fs_read_unsupported,
.write = fs_write_unsupported,
.uuid = fs_uuid_unsupported,
+ .opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
+ .ln = fs_ln_unsupported,
},
};
@@ -202,6 +305,19 @@ static struct fstype_info *fs_get_info(int fstype)
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;
@@ -223,7 +339,7 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
}
#endif
- part = get_device_and_partition(ifname, dev_part_str, &fs_dev_desc,
+ part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
&fs_partition, 1);
if (part < 0)
return -1;
@@ -238,6 +354,32 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
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;
}
}
@@ -301,13 +443,56 @@ int fs_size(const char *filename, loff_t *size)
return ret;
}
-int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
- loff_t *actread)
+#ifdef CONFIG_LMB
+/* Check if a file may be read to the given address */
+static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
+ loff_t len, struct fstype_info *info)
+{
+ struct lmb lmb;
+ int ret;
+ loff_t size;
+ loff_t read_len;
+
+ /* get the actual size of the file */
+ ret = info->size(filename, &size);
+ if (ret)
+ return ret;
+ if (offset >= size) {
+ /* offset >= EOF, no bytes will be written */
+ return 0;
+ }
+ read_len = size - offset;
+
+ /* limit to 'len' if it is smaller */
+ if (len && len < read_len)
+ read_len = len;
+
+ lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
+ lmb_dump_all(&lmb);
+
+ if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
+ return 0;
+
+ printf("** Reading file would overwrite reserved memory **\n");
+ return -ENOSPC;
+}
+#endif
+
+static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+ int do_lmb_check, loff_t *actread)
{
struct fstype_info *info = fs_get_info(fs_type);
void *buf;
int ret;
+#ifdef CONFIG_LMB
+ if (do_lmb_check) {
+ ret = fs_read_lmb_check(filename, addr, offset, len, info);
+ if (ret)
+ return ret;
+ }
+#endif
+
/*
* We don't actually know how many bytes are being read, since len==0
* means read the whole file.
@@ -318,12 +503,18 @@ int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
/* If we requested a specific number of bytes, check we got it */
if (ret == 0 && len && *actread != len)
- printf("** %s shorter than offset + len **\n", filename);
+ debug("** %s shorter than offset + len **\n", filename);
fs_close();
return ret;
}
+int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+ loff_t *actread)
+{
+ return _fs_read(filename, addr, offset, len, 0, actread);
+}
+
int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
loff_t *actwrite)
{
@@ -344,6 +535,102 @@ int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
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 fs_ln(const char *fname, const char *target)
+{
+ struct fstype_info *info = fs_get_info(fs_type);
+ int ret;
+
+ ret = info->ln(fname, target);
+
+ if (ret < 0) {
+ printf("** Unable to create link %s -> %s **\n", fname, target);
+ ret = -1;
+ }
+ fs_close();
+
+ return ret;
+}
+
int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype)
{
@@ -358,7 +645,7 @@ int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
if (fs_size(argv[3], &size) < 0)
return CMD_RET_FAILURE;
- setenv_hex("filesize", size);
+ env_set_hex("filesize", size);
return 0;
}
@@ -389,7 +676,7 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
if (ep == argv[3] || *ep != '\0')
return CMD_RET_USAGE;
} else {
- addr_str = getenv("loadaddr");
+ addr_str = env_get("loadaddr");
if (addr_str != NULL)
addr = simple_strtoul(addr_str, NULL, 16);
else
@@ -398,7 +685,7 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
if (argc >= 5) {
filename = argv[4];
} else {
- filename = getenv("bootfile");
+ filename = env_get("bootfile");
if (!filename) {
puts("** No boot file defined **\n");
return 1;
@@ -414,7 +701,7 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
pos = 0;
time = get_timer(0);
- ret = fs_read(filename, addr, pos, bytes, &len_read);
+ ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
time = get_timer(time);
if (ret < 0)
return 1;
@@ -427,7 +714,8 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
}
puts("\n");
- setenv_hex("filesize", len_read);
+ env_set_hex("fileaddr", addr);
+ env_set_hex("filesize", len_read);
return 0;
}
@@ -518,7 +806,7 @@ int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
return CMD_RET_FAILURE;
if (argc == 4)
- setenv(argv[3], uuid);
+ env_set(argv[3], uuid);
else
printf("%s\n", uuid);
@@ -538,10 +826,61 @@ int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
info = fs_get_info(fs_type);
if (argc == 4)
- setenv(argv[3], info->name);
+ env_set(argv[3], info->name);
else
printf("%s\n", info->name);
+ fs_close();
+
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;
+}
+
+int do_ln(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype)
+{
+ if (argc != 5)
+ return CMD_RET_USAGE;
+
+ if (fs_set_blk_dev(argv[1], argv[2], fstype))
+ return 1;
+
+ if (fs_ln(argv[3], argv[4]))
+ return 1;
+
+ return 0;
+}