[PATCH v2 07/11] fs: exfat: Add U-Boot porting layer
Marek Vasut
marex at denx.de
Thu Mar 13 20:13:23 CET 2025
Add U-Boot adjustments to the libexfat code and integrate
the result into U-Boot filesystem layer. This provides full
read-write exfat support for U-Boot available via generic
filesystem interface.
FS_DIRENT_NAME_LEN is increased to 1024 in case exfat is
enabled, because EXFAT can use UTF16 names, which do not
fit into current FS_DIRENT_NAME_LEN. To avoid affecting
every configuration, increase FS_DIRENT_NAME_LEN only in
case EXFAT is enabled.
Example usage via sandbox, assuming disk.img with one exfat partition:
Drive info:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; host info 0'
dev blocks blksz label path
0 262144 512 0 ../disk.img
List files:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 /api'
475 Kconfig
230 Makefile
1873 README
...
10 file(s), 0 dir(s)
Load and checksum a file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
crc32 $loadaddr $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
crc32 for 00000000 ... 0000dd93 ==> b2e847c9
$ crc32 .config
b2e847c9
Load .config file to RAM, store the file into FS as /newconfig,
load the /newconfig into RAM and checksum the file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
save host 0:1 $loadaddr /newconfig $filesize ; \
load host 0:1 0x10000 /newconfig ; \
crc32 0x10000 $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
56724 bytes written in 0 ms
56724 bytes read in 0 ms
crc32 for 00010000 ... 0001dd93 ==> b2e847c9
Remove file 3.txt and create new directory /newdir:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 / ; \
rm host 0:1 3.txt ; mkdir host 0:1 /newdir ; \
ls host 0:1 /'
...
0 1.txt
0 2.txt
0 3.txt
0 4.txt
0 5.txt
7 file(s), 4 dir(s)
...
0 1.txt
0 2.txt
newdir/
0 4.txt
0 5.txt
6 file(s), 5 dir(s)
Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Baruch Siach <baruch at tkos.co.il>
Cc: Francesco Dolcini <francesco.dolcini at toradex.com>
Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
Cc: Hiago De Franco <hiago.franco at toradex.com>
Cc: Ilias Apalodimas <ilias.apalodimas at linaro.org>
Cc: Nam Cao <namcao at linutronix.de>
Cc: Simon Glass <sjg at chromium.org>
Cc: Sughosh Ganu <sughosh.ganu at linaro.org>
Cc: Tom Rini <trini at konsulko.com>
Cc: u-boot at lists.denx.de
---
V2: - Update Kconfig, imply CMD_FS_GENERIC if CMDLINE
- Update Makefile to use obj .. +=
---
fs/Kconfig | 2 +
fs/Makefile | 1 +
fs/exfat/Kconfig | 5 +
fs/exfat/Makefile | 13 ++
fs/exfat/exfat.h | 11 +
fs/exfat/exfatfs.h | 19 ++
fs/exfat/io.c | 486 ++++++++++++++++++++++++++++++++++++++++++++
fs/exfat/lookup.c | 3 +
fs/exfat/mount.c | 2 +
fs/exfat/platform.h | 2 +
fs/exfat/repair.c | 13 ++
fs/exfat/time.c | 2 +
fs/fs.c | 22 ++
include/exfat.h | 24 +++
include/fs.h | 3 +-
15 files changed, 607 insertions(+), 1 deletion(-)
create mode 100644 fs/exfat/Kconfig
create mode 100644 fs/exfat/Makefile
create mode 100644 include/exfat.h
diff --git a/fs/Kconfig b/fs/Kconfig
index 5e83cb27059..e0b0b901e1d 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -8,6 +8,8 @@ source "fs/btrfs/Kconfig"
source "fs/cbfs/Kconfig"
+source "fs/exfat/Kconfig"
+
source "fs/ext4/Kconfig"
source "fs/fat/Kconfig"
diff --git a/fs/Makefile b/fs/Makefile
index 1c2ff180bda..ce5e74257a0 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -16,6 +16,7 @@ obj-y += fs.o
obj-$(CONFIG_FS_BTRFS) += btrfs/
obj-$(CONFIG_FS_CBFS) += cbfs/
obj-$(CONFIG_CMD_CRAMFS) += cramfs/
+obj-$(CONFIG_FS_EXFAT) += exfat/
obj-$(CONFIG_FS_EXT4) += ext4/
obj-$(CONFIG_FS_FAT) += fat/
obj-$(CONFIG_FS_JFFS2) += jffs2/
diff --git a/fs/exfat/Kconfig b/fs/exfat/Kconfig
new file mode 100644
index 00000000000..bce61e8fcc7
--- /dev/null
+++ b/fs/exfat/Kconfig
@@ -0,0 +1,5 @@
+config FS_EXFAT
+ bool "Enable EXFAT filesystem support"
+ imply CMD_FS_GENERIC if CMDLINE
+ help
+ This provides read/write support for EXFAT filesystem.
diff --git a/fs/exfat/Makefile b/fs/exfat/Makefile
new file mode 100644
index 00000000000..550c0683d65
--- /dev/null
+++ b/fs/exfat/Makefile
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-$(CONFIG_FS_EXFAT) += \
+ cluster.o \
+ io.o \
+ lookup.o \
+ mount.o \
+ node.o \
+ repair.o \
+ time.o \
+ utf.o \
+ utils.o
diff --git a/fs/exfat/exfat.h b/fs/exfat/exfat.h
index 0e146e8f4d9..cce3e3021ca 100644
--- a/fs/exfat/exfat.h
+++ b/fs/exfat/exfat.h
@@ -34,8 +34,10 @@
#include <stdlib.h>
#include <time.h>
#include <stdbool.h>
+#ifndef __UBOOT__
#include <sys/stat.h>
#include <sys/types.h>
+#endif
#define EXFAT_NAME_MAX 255
/* UTF-16 encodes code points up to U+FFFF as single 16-bit code units.
@@ -51,7 +53,9 @@
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#ifndef __UBOOT__
#define DIV_ROUND_UP(x, d) (((x) + (d) - 1) / (d))
+#endif
#define ROUND_UP(x, d) (DIV_ROUND_UP(x, d) * (d))
#define BMAP_SIZE(count) (ROUND_UP(count, sizeof(bitmap_t) * 8) / 8)
@@ -145,10 +149,17 @@ struct exfat_human_bytes
extern int exfat_errors;
extern int exfat_errors_fixed;
+#ifdef __UBOOT__
+#define exfat_bug(fmt, args...) log_crit(fmt, ##args)
+#define exfat_error(fmt, args...) log_err(fmt, ##args)
+#define exfat_warn(fmt, args...) log_warning(fmt, ##args)
+#define exfat_debug(fmt, args...) log_debug(fmt, ##args)
+#else
void exfat_bug(const char* format, ...) PRINTF NORETURN;
void exfat_error(const char* format, ...) PRINTF;
void exfat_warn(const char* format, ...) PRINTF;
void exfat_debug(const char* format, ...) PRINTF;
+#endif
struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode);
int exfat_close(struct exfat_dev* dev);
diff --git a/fs/exfat/exfatfs.h b/fs/exfat/exfatfs.h
index 3618d4d3024..fa59aab47b6 100644
--- a/fs/exfat/exfatfs.h
+++ b/fs/exfat/exfatfs.h
@@ -23,6 +23,25 @@
#ifndef EXFATFS_H_INCLUDED
#define EXFATFS_H_INCLUDED
+#ifdef __UBOOT__
+#include <linux/stat.h>
+#include <linux/types.h>
+#include <log.h>
+#include <stdint.h>
+#include <vsprintf.h>
+
+struct timespec {
+ time_t tv_sec; /* seconds */
+ long tv_nsec; /* nanoseconds */
+};
+
+#define time(t) 1741234567 /* Thu Mar 6 05:16:07 CET 2025 */
+#define geteuid(n) 1000
+#define getegid(n) 1000
+#define strtol(n, e, b) simple_strtol(n, e, b)
+#define off_t unsigned long long
+#endif
+
#include "byteorder.h"
#include "compiler.h"
diff --git a/fs/exfat/io.c b/fs/exfat/io.c
index 7af5316da70..81e82829c72 100644
--- a/fs/exfat/io.c
+++ b/fs/exfat/io.c
@@ -22,6 +22,7 @@
#include "exfat.h"
#include <inttypes.h>
+#ifndef __UBOOT__
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
@@ -44,6 +45,16 @@
#include <sys/uio.h>
#include <ublio.h>
#endif
+#else
+#include <fs.h>
+#include <fs_internal.h>
+
+static struct exfat_ctxt {
+ struct disk_partition cur_part_info;
+ struct blk_desc *cur_dev;
+ struct exfat ef;
+} ctxt;
+#endif
struct exfat_dev
{
@@ -54,8 +65,12 @@ struct exfat_dev
off_t pos;
ublio_filehandle_t ufh;
#endif
+#ifdef __UBOOT__
+ struct exfat_ctxt *ctxt;
+#endif
};
+#ifndef __UBOOT__
static bool is_open(int fd)
{
return fcntl(fd, F_GETFD) != -1;
@@ -386,6 +401,74 @@ ssize_t exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
return pwrite(dev->fd, buffer, size, offset);
#endif
}
+#else /* U-Boot */
+struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode)
+{
+ struct exfat_dev* dev;
+
+ dev = malloc(sizeof(struct exfat_dev));
+ if (!dev) {
+ exfat_error("failed to allocate memory for device structure");
+ return NULL;
+ }
+ dev->mode = EXFAT_MODE_RW;
+ dev->size = ctxt.cur_part_info.size * ctxt.cur_part_info.blksz;
+ dev->ctxt = &ctxt;
+
+ return dev;
+}
+
+int exfat_close(struct exfat_dev* dev)
+{
+ free(dev);
+ return 0;
+}
+
+int exfat_fsync(struct exfat_dev* dev)
+{
+ return 0;
+}
+
+enum exfat_mode exfat_get_mode(const struct exfat_dev* dev)
+{
+ return dev->mode;
+}
+
+off_t exfat_get_size(const struct exfat_dev* dev)
+{
+ return dev->size;
+}
+
+ssize_t exfat_pread(struct exfat_dev* dev, void* buffer, size_t size,
+ off_t offset)
+{
+ lbaint_t sect = offset >> ctxt.cur_dev->log2blksz;
+ int off = offset & (ctxt.cur_dev->blksz - 1);
+
+ if (!ctxt.cur_dev)
+ return -EIO;
+
+ if (fs_devread(ctxt.cur_dev, &ctxt.cur_part_info, sect,
+ off, size, buffer))
+ return 0;
+ return -EIO;
+}
+
+ssize_t exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
+ off_t offset)
+{
+ lbaint_t sect = offset >> ctxt.cur_dev->log2blksz;
+ int off = offset & (ctxt.cur_dev->blksz - 1);
+
+ if (!ctxt.cur_dev)
+ return -EIO;
+
+ if (fs_devwrite(ctxt.cur_dev, &ctxt.cur_part_info, sect,
+ off, size, buffer))
+ return 0;
+ return -EIO;
+}
+#endif
ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off_t offset)
@@ -512,3 +595,406 @@ ssize_t exfat_generic_pwrite(struct exfat* ef, struct exfat_node* node,
exfat_update_mtime(node);
return size - remainder;
}
+
+#ifdef __UBOOT__
+struct exfat_dir_stream {
+ struct fs_dir_stream fs_dirs;
+ struct fs_dirent dirent;
+
+ struct exfat_node* node;
+ struct exfat_iterator it;
+ /* State tracker flags for emulated . and .. dirents */
+ bool dot;
+ bool dotdot;
+};
+
+int exfat_fs_probe(struct blk_desc *fs_dev_desc,
+ struct disk_partition *fs_partition)
+{
+ int ret;
+
+ ctxt.cur_dev = fs_dev_desc;
+ ctxt.cur_part_info = *fs_partition;
+
+ ret = exfat_mount(&ctxt.ef, NULL, "");
+ if (ret)
+ goto error;
+
+ return 0;
+error:
+ ctxt.cur_dev = NULL;
+ return ret;
+}
+
+#define PATH_MAX FS_DIRENT_NAME_LEN
+
+/* Adapted from uclibc 1.0.35 */
+static char *exfat_realpath(const char *path, char got_path[])
+{
+ char copy_path[PATH_MAX];
+ char *max_path, *new_path;
+ size_t path_len;
+
+ if (path == NULL)
+ return NULL;
+
+ if (*path == '\0')
+ return NULL;
+
+ /* Make a copy of the source path since we may need to modify it. */
+ path_len = strlen(path);
+ if (path_len >= PATH_MAX - 2)
+ return NULL;
+
+ /* Copy so that path is at the end of copy_path[] */
+ strcpy(copy_path + (PATH_MAX-1) - path_len, path);
+ path = copy_path + (PATH_MAX-1) - path_len;
+ max_path = got_path + PATH_MAX - 2; /* points to last non-NUL char */
+ new_path = got_path;
+ *new_path++ = '/';
+ path++;
+
+ /* Expand each slash-separated pathname component. */
+ while (*path != '\0') {
+ /* Ignore stray "/". */
+ if (*path == '/') {
+ path++;
+ continue;
+ }
+
+ if (*path == '.') {
+ /* Ignore ".". */
+ if (path[1] == '\0' || path[1] == '/') {
+ path++;
+ continue;
+ }
+
+ if (path[1] == '.') {
+ if (path[2] == '\0' || path[2] == '/') {
+ path += 2;
+ /* Ignore ".." at root. */
+ if (new_path == got_path + 1)
+ continue;
+ /* Handle ".." by backing up. */
+ while ((--new_path)[-1] != '/')
+ ;
+ continue;
+ }
+ }
+ }
+
+ /* Safely copy the next pathname component. */
+ while (*path != '\0' && *path != '/') {
+ if (new_path > max_path)
+ return NULL;
+ *new_path++ = *path++;
+ }
+
+ *new_path++ = '/';
+ }
+
+ /* Delete trailing slash but don't whomp a lone slash. */
+ if (new_path != got_path + 1 && new_path[-1] == '/')
+ new_path--;
+
+ /* Make sure it's null terminated. */
+ *new_path = '\0';
+ return got_path;
+}
+
+int exfat_lookup_realpath(struct exfat* ef, struct exfat_node** node,
+ const char* path)
+{
+ char input_path[FS_DIRENT_NAME_LEN];
+ char real_path[FS_DIRENT_NAME_LEN];
+ char *name;
+
+ /* Input is always absolute path */
+ snprintf(input_path, FS_DIRENT_NAME_LEN, "/%s", path);
+ name = exfat_realpath(input_path, real_path);
+ if (!name)
+ return -EINVAL;
+
+ return exfat_lookup(ef, node, real_path);
+}
+
+int exfat_fs_opendir(const char *filename, struct fs_dir_stream **dirsp)
+{
+ struct exfat_dir_stream *dirs;
+ int err;
+
+ dirs = calloc(1, sizeof(*dirs));
+ if (!dirs)
+ return -ENOMEM;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &dirs->node, filename);
+ if (err)
+ goto err_out;
+
+ if (!(dirs->node->attrib & EXFAT_ATTRIB_DIR)) {
+ err = -ENOTDIR;
+ goto err_out;
+ }
+
+ err = exfat_opendir(&ctxt.ef, dirs->node, &dirs->it);
+ if (err)
+ goto err_out;
+
+ *dirsp = &dirs->fs_dirs;
+
+ return 0;
+err_out:
+ free(dirs);
+ return err;
+}
+
+int exfat_fs_readdir(struct fs_dir_stream *fs_dirs, struct fs_dirent **dentp)
+{
+ struct exfat_dir_stream *dirs =
+ container_of(fs_dirs, struct exfat_dir_stream, fs_dirs);
+ struct fs_dirent *dent = &dirs->dirent;
+ struct exfat_node* node;
+
+ /* Emulate current directory ./ */
+ if (!dirs->dot) {
+ dirs->dot = true;
+ snprintf(dent->name, FS_DIRENT_NAME_LEN, ".");
+ dent->type = FS_DT_DIR;
+ *dentp = dent;
+ return 0;
+ }
+
+ /* Emulate parent directory ../ */
+ if (!dirs->dotdot) {
+ dirs->dotdot = true;
+ snprintf(dent->name, FS_DIRENT_NAME_LEN, "..");
+ dent->type = FS_DT_DIR;
+ *dentp = dent;
+ return 0;
+ }
+
+ /* Read actual directory content */
+ node = exfat_readdir(&dirs->it);
+ if (!node) { /* No more content, reset . and .. emulation */
+ dirs->dot = false;
+ dirs->dotdot = false;
+ return 1;
+ }
+
+ exfat_get_name(node, dent->name);
+ if (node->attrib & EXFAT_ATTRIB_DIR) {
+ dent->type = FS_DT_DIR;
+ } else {
+ dent->type = FS_DT_REG;
+ dent->size = node->size;
+ }
+
+ *dentp = dent;
+
+ return 0;
+}
+
+void exfat_fs_closedir(struct fs_dir_stream *fs_dirs)
+{
+ free(fs_dirs);
+}
+
+int exfat_fs_ls(const char *dirname)
+{
+ struct exfat_node *dnode, *node;
+ char name[FS_DIRENT_NAME_LEN];
+ int nfiles = 0, ndirs = 2;
+ struct exfat_iterator it;
+ int err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &dnode, dirname);
+ if (err)
+ return err;
+
+ if (!(dnode->attrib & EXFAT_ATTRIB_DIR)) {
+ err = -ENOTDIR;
+ goto err_out;
+ }
+
+ err = exfat_opendir(&ctxt.ef, dnode, &it);
+ if (err)
+ goto err_out;
+
+ printf(" ./\n");
+ printf(" ../\n");
+
+ /* Read actual directory content */
+ while ((node = exfat_readdir(&it))) {
+ exfat_get_name(node, name);
+ if (node->attrib & EXFAT_ATTRIB_DIR) {
+ printf(" %s/\n", name);
+ ndirs++;
+ } else {
+ printf(" %8lld %s\n", node->size, name);
+ nfiles++;
+ }
+ exfat_put_node(&ctxt.ef, node);
+ }
+
+ printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
+
+ exfat_closedir(&ctxt.ef, &it);
+
+err_out:
+ exfat_put_node(&ctxt.ef, dnode);
+ return err;
+}
+
+int exfat_fs_exists(const char *filename)
+{
+ struct exfat_node* node;
+ int err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &node, filename);
+ if (err)
+ return err;
+
+ exfat_put_node(&ctxt.ef, node);
+
+ return 0;
+}
+
+int exfat_fs_size(const char *filename, loff_t *size)
+{
+ struct exfat_node* node;
+ int err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &node, filename);
+ if (err)
+ return err;
+
+ *size = node->size;
+
+ exfat_put_node(&ctxt.ef, node);
+
+ return 0;
+}
+
+int exfat_fs_read(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actread)
+{
+ struct exfat_node* node;
+ ssize_t sz;
+ int err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &node, filename);
+ if (err)
+ return err;
+
+ if (!len)
+ len = node->size;
+
+ sz = exfat_generic_pread(&ctxt.ef, node, buf, len, offset);
+ if (sz < 0) {
+ *actread = 0;
+ err = -EINVAL;
+ goto exit;
+ }
+
+ *actread = sz;
+
+ exfat_put_node(&ctxt.ef, node);
+
+ return exfat_flush_node(&ctxt.ef, node);
+exit:
+ exfat_put_node(&ctxt.ef, node);
+ return err;
+}
+
+int exfat_fs_unlink(const char *filename)
+{
+ struct exfat_node* node;
+ int err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &node, filename);
+ if (err) {
+ printf("%s: doesn't exist (%d)\n", filename, err);
+ return err;
+ }
+
+ if (node->attrib & EXFAT_ATTRIB_DIR) {
+ err = exfat_rmdir(&ctxt.ef, node);
+ if (err == -ENOTEMPTY)
+ printf("Error: directory is not empty: %d\n", err);
+ } else {
+ err = exfat_unlink(&ctxt.ef, node);
+ }
+
+ if (err)
+ goto exit;
+
+ exfat_put_node(&ctxt.ef, node);
+
+ return exfat_cleanup_node(&ctxt.ef, node);
+exit:
+ exfat_put_node(&ctxt.ef, node);
+ return err;
+}
+
+int exfat_fs_mkdir(const char *dirname)
+{
+ if (!strcmp(dirname, ".") || !strcmp(dirname, ".."))
+ return -EINVAL;
+
+ return exfat_mkdir(&ctxt.ef, dirname);
+}
+
+int exfat_fs_write(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite)
+{
+ struct exfat_node* node;
+ ssize_t sz;
+ int err;
+
+ /*
+ * Ignore -EEXIST error here, if the file exists,
+ * this write should act as an append to offset.
+ */
+ err = exfat_mknod(&ctxt.ef, filename);
+ if (err && err != -EEXIST)
+ return err;
+
+ err = exfat_lookup_realpath(&ctxt.ef, &node, filename);
+ if (err)
+ return err;
+
+ /* Write into directories is not allowed. */
+ if (node->attrib & EXFAT_ATTRIB_DIR)
+ return -EISDIR;
+
+ /* Write past end of file is not allowed. */
+ if (offset > node->size) {
+ err = -EINVAL;
+ goto exit;
+ }
+
+ sz = exfat_generic_pwrite(&ctxt.ef, node, buf, len, offset);
+ if (sz < 0) {
+ *actwrite = 0;
+ err = -EINVAL;
+ goto exit;
+ }
+
+ err = exfat_truncate(&ctxt.ef, node, offset + sz, false);
+ if (err)
+ goto exit;
+
+ *actwrite = sz;
+
+ err = exfat_flush_node(&ctxt.ef, node);
+exit:
+ exfat_put_node(&ctxt.ef, node);
+ return err;
+}
+
+void exfat_fs_close(void)
+{
+ exfat_unmount(&ctxt.ef);
+ ctxt.cur_dev = NULL;
+}
+#endif /* __U_BOOT__ */
diff --git a/fs/exfat/lookup.c b/fs/exfat/lookup.c
index bb7b1243632..9867aab95f3 100644
--- a/fs/exfat/lookup.c
+++ b/fs/exfat/lookup.c
@@ -219,4 +219,7 @@ int exfat_split(struct exfat* ef, struct exfat_node** parent,
*parent = *node;
}
exfat_bug("impossible");
+#ifdef __UBOOT__
+ return 0;
+#endif
}
diff --git a/fs/exfat/mount.c b/fs/exfat/mount.c
index 86fb84db244..c17a84735fc 100644
--- a/fs/exfat/mount.c
+++ b/fs/exfat/mount.c
@@ -25,8 +25,10 @@
#include <stdlib.h>
#include <errno.h>
#include <inttypes.h>
+#ifndef __UBOOT__
#include <unistd.h>
#include <sys/types.h>
+#endif
static uint64_t rootdir_size(const struct exfat* ef)
{
diff --git a/fs/exfat/platform.h b/fs/exfat/platform.h
index 9bd125a100a..668857607bf 100644
--- a/fs/exfat/platform.h
+++ b/fs/exfat/platform.h
@@ -26,8 +26,10 @@
#if defined(__linux__) || defined(__GLIBC__) || defined(__GNU__)
+#ifndef __UBOOT__
#include <endian.h>
#include <byteswap.h>
+#endif
#define exfat_bswap16(x) bswap_16(x)
#define exfat_bswap32(x) bswap_32(x)
#define exfat_bswap64(x) bswap_64(x)
diff --git a/fs/exfat/repair.c b/fs/exfat/repair.c
index 615b8d11f3c..9c91239b899 100644
--- a/fs/exfat/repair.c
+++ b/fs/exfat/repair.c
@@ -21,15 +21,19 @@
*/
#include "exfat.h"
+#ifndef __UBOOT__
#include <strings.h>
+#endif
int exfat_errors_fixed;
bool exfat_ask_to_fix(const struct exfat* ef)
{
const char* question = "Fix (Y/N)?";
+#ifndef __UBOOT__
char answer[8];
bool yeah, nope;
+#endif
switch (ef->repair)
{
@@ -39,6 +43,7 @@ bool exfat_ask_to_fix(const struct exfat* ef)
printf("%s %s", question, "Y\n");
return true;
case EXFAT_REPAIR_ASK:
+#ifndef __UBOOT__
do
{
printf("%s ", question);
@@ -56,8 +61,16 @@ bool exfat_ask_to_fix(const struct exfat* ef)
}
while (!yeah && !nope);
return yeah;
+#else
+ default:
+ /* Do not attempt to repair FS in U-Boot. */
+ return false;
+#endif
}
exfat_bug("invalid repair option value: %d", ef->repair);
+#ifdef __UBOOT__
+ return false;
+#endif
}
bool exfat_fix_invalid_vbr_checksum(const struct exfat* ef, void* sector,
diff --git a/fs/exfat/time.c b/fs/exfat/time.c
index 3ab2a1561b8..f2217dd7986 100644
--- a/fs/exfat/time.c
+++ b/fs/exfat/time.c
@@ -159,6 +159,7 @@ void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time,
void exfat_tzset(void)
{
+#ifndef __UBOOT__
time_t now;
struct tm* utc;
@@ -170,4 +171,5 @@ void exfat_tzset(void)
summer time is in effect. */
utc->tm_isdst = -1;
exfat_timezone = mktime(utc) - now;
+#endif
}
diff --git a/fs/fs.c b/fs/fs.c
index 30a8e5010f2..01d69483e84 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -32,6 +32,7 @@
#include <efi_loader.h>
#include <squashfs.h>
#include <erofs.h>
+#include <exfat.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -380,6 +381,27 @@ static struct fstype_info fstypes[] = {
.mkdir = fs_mkdir_unsupported,
.rename = fs_rename_unsupported,
},
+#endif
+#if IS_ENABLED(CONFIG_FS_EXFAT)
+ {
+ .fstype = FS_TYPE_EXFAT,
+ .name = "exfat",
+ .null_dev_desc_ok = false,
+ .probe = exfat_fs_probe,
+ .opendir = exfat_fs_opendir,
+ .readdir = exfat_fs_readdir,
+ .ls = exfat_fs_ls,
+ .read = exfat_fs_read,
+ .size = exfat_fs_size,
+ .close = exfat_fs_close,
+ .closedir = exfat_fs_closedir,
+ .exists = exfat_fs_exists,
+ .uuid = fs_uuid_unsupported,
+ .write = exfat_fs_write,
+ .ln = fs_ln_unsupported,
+ .unlink = exfat_fs_unlink,
+ .mkdir = exfat_fs_mkdir,
+ },
#endif
{
.fstype = FS_TYPE_ANY,
diff --git a/include/exfat.h b/include/exfat.h
new file mode 100644
index 00000000000..7e43beeb348
--- /dev/null
+++ b/include/exfat.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _EXFAT_H_
+#define _EXFAT_H_
+
+struct disk_partition;
+
+int exfat_fs_opendir(const char *filename, struct fs_dir_stream **dirsp);
+int exfat_fs_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
+int exfat_fs_ls(const char *dirname);
+int exfat_fs_probe(struct blk_desc *fs_dev_desc,
+ struct disk_partition *fs_partition);
+int exfat_fs_read(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actread);
+int exfat_fs_size(const char *filename, loff_t *size);
+int exfat_fs_exists(const char *filename);
+void exfat_fs_close(void);
+void exfat_fs_closedir(struct fs_dir_stream *dirs);
+
+int exfat_fs_unlink(const char *filename);
+int exfat_fs_mkdir(const char *dirname);
+int exfat_fs_write(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite);
+
+#endif /* _EXFAT_H */
diff --git a/include/fs.h b/include/fs.h
index 54449faf2e5..731aaa02637 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -18,6 +18,7 @@ struct cmd_tbl;
#define FS_TYPE_SQUASHFS 6
#define FS_TYPE_EROFS 7
#define FS_TYPE_SEMIHOSTING 8
+#define FS_TYPE_EXFAT 9
struct blk_desc;
@@ -173,7 +174,7 @@ int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
#define FS_DT_REG 8 /* regular file */
#define FS_DT_LNK 10 /* symbolic link */
-#define FS_DIRENT_NAME_LEN 256
+#define FS_DIRENT_NAME_LEN CONFIG_IS_ENABLED(FS_EXFAT, (1024), (256))
/**
* struct fs_dirent - directory entry
--
2.47.2
More information about the U-Boot
mailing list