exfat-tools: initial commit

Signed-off-by: Namjae Jeon <[email protected]>

Makefile.am

@@ -0,0 +1,5 @@
+## Makefile.am
+
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = lib mkfs fsck dump

autogen.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+autoreconf --install --verbose

configure.ac

@@ -0,0 +1,37 @@
+AC_PREREQ([2.68])
+
+m4_define([exfat_tools_major_ver], [1])
+m4_define([exfat_tools_minor_ver], [0])
+m4_define([exfat_tools_micro_ver], [0])
+
+m4_define([exfat_tools_version],
+	[exfat_tools_major_ver.exfat_tools_minor_ver.exfat_tools_micro_ver])
+
+AC_INIT([CIFSD tools], [exfat_tools_version],
+	[[email protected]])
+
+AC_DEFINE([EXFAT_TOOLS_VERSION], "exfat_tools_version", [exfat-tools version])
+
+AC_CONFIG_SRCDIR([config.h.in])
+AC_CONFIG_HEADER([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_AUX_DIR([build-aux])
+AM_INIT_AUTOMAKE([foreign tar-pax dist-xz subdir-objects])
+
+AC_LANG([C])
+AC_PROG_CC
+AC_PROG_CC_STDC
+AM_SILENT_RULES([yes])
+AC_PROG_LIBTOOL
+
+PKG_PROG_PKG_CONFIG([0.9])
+
+AC_CONFIG_FILES([
+	Makefile
+	lib/Makefile
+	mkfs/Makefile
+	fsck/Makefile
+	dump/Makefile
+])
+
+AC_OUTPUT

dump/Makefile.am

@@ -0,0 +1,6 @@
+AM_CFLAGS = -I$(top_srcdir)/include -fno-common
+dump_LDADD = $(top_builddir)/lib/libexfat.la
+
+sbin_PROGRAMS = dump.exfat
+
+dump_SOURCES = dump.c

dump/dump.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2019 Namjae Jeon <[email protected]>
+ */
+
+#include <stdio.h>
+
+#include "exfat.h"
+
+int main()
+{
+	return 0;
+}

fsck/Makefile.am

@@ -0,0 +1,6 @@
+AM_CFLAGS = -I$(top_srcdir)/include -fno-common
+fsck_LDADD = $(top_builddir)/lib/libexfat.la
+
+sbin_PROGRAMS = fsck.exfat
+
+fsck_SOURCES = fsck.c

fsck/fsck.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2019 Namjae Jeon <[email protected]>
+ */
+
+#include <stdio.h>
+
+#include "exfat.h"
+
+int main()
+{
+	return 0;
+}

include/exfat.h

@@ -0,0 +1,216 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef _EXFAT_H
+#define _EXFAT_H
+
+#include <endian.h>
+#include <stdint.h>
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+typedef uint16_t __le16;
+typedef uint32_t __le32;
+typedef uint64_t __le64;
+typedef uint8_t	__u8;
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define cpu_to_le16(x)	(x)
+#define cpu_to_le32(x)	(x)
+#define cpu_to_le64(x)	(x)
+#else
+#define cpu_to_le16(x)	((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8))
+#define cpu_to_le32(x)	\
+	((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >>  8) | \
+	 (((x) & 0x0000ff00u) <<  8) | (((x) & 0x000000ffu) << 24))
+#define cpu_to_le64(x)	((cpu_to_le32(x) << 32) | cpu_to_le32((x) >> 32))
+#endif
+
+#define le64_to_cpu(x)  cpu_to_le64(x)
+#define le32_to_cpu(x)  cpu_to_le32(x)
+#define le16_to_cpu(x)  cpu_to_le16(x)
+
+#define PBR_SIGNATURE		0xAA55
+
+#define VOL_CLEAN		0x0000
+#define VOL_DIRTY		0x0002
+
+#define DENTRY_SIZE		32 /* directory entry size */
+#define DENTRY_SIZE_BITS	5
+/* exFAT allows 8388608(256MB) directory entries */
+#define MAX_EXFAT_DENTRIES	8388608
+
+/* dentry types */
+#define MSDOS_DELETED		0xE5	/* deleted mark */
+#define MSDOS_UNUSED		0x00	/* end of directory */
+
+#define EXFAT_UNUSED		0x00	/* end of directory */
+#define EXFAT_DELETE		~(0x80)
+#define IS_EXFAT_DELETED(x)	((x) < 0x80) /* deleted file (0x01~0x7F) */
+#define EXFAT_INVAL		0x80	/* invalid value */
+#define EXFAT_BITMAP		0x81	/* allocation bitmap */
+#define EXFAT_UPCASE		0x82	/* upcase table */
+#define EXFAT_VOLUME		0x83	/* volume label */
+#define EXFAT_FILE		0x85	/* file or dir */
+#define EXFAT_GUID		0xA0
+#define EXFAT_PADDING		0xA1
+#define EXFAT_ACLTAB		0xA2
+#define EXFAT_STREAM		0xC0	/* stream entry */
+#define EXFAT_NAME		0xC1	/* file name entry */
+#define EXFAT_ACL		0xC2	/* stream entry */
+
+/* checksum types */
+#define CS_DIR_ENTRY		0
+#define CS_PBR_SECTOR		1
+#define CS_DEFAULT		2
+
+/* file attributes */
+#define ATTR_READONLY		0x0001
+#define ATTR_HIDDEN		0x0002
+#define ATTR_SYSTEM		0x0004
+#define ATTR_VOLUME		0x0008
+#define ATTR_SUBDIR		0x0010
+#define ATTR_ARCHIVE		0x0020
+#define ATTR_EXTEND		(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | \
+				 ATTR_VOLUME) /* 0x000F */
+
+#define ATTR_EXTEND_MASK	(ATTR_EXTEND | ATTR_SUBDIR | ATTR_ARCHIVE)
+#define ATTR_RWMASK		(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_VOLUME | \
+				 ATTR_SUBDIR | ATTR_ARCHIVE)
+
+#define ATTR_READONLY_LE	cpu_to_le16(0x0001)
+#define ATTR_HIDDEN_LE		cpu_to_le16(0x0002)
+#define ATTR_SYSTEM_LE		cpu_to_le16(0x0004)
+#define ATTR_VOLUME_LE		cpu_to_le16(0x0008)
+#define ATTR_SUBDIR_LE		cpu_to_le16(0x0010)
+#define ATTR_ARCHIVE_LE		cpu_to_le16(0x0020)
+
+/* EXFAT BIOS parameter block (64 bytes) */
+struct bpb64 {
+	__u8 jmp_boot[3];
+	__u8 oem_name[8];
+	__u8 res_zero[53];
+};
+
+/* EXFAT EXTEND BIOS parameter block (56 bytes) */
+struct bsx64 {
+	__le64 vol_offset;
+	__le64 vol_length;
+	__le32 fat_offset;
+	__le32 fat_length;
+	__le32 clu_offset;
+	__le32 clu_count;
+	__le32 root_cluster;
+	__le32 vol_serial;
+	__u8 fs_version[2];
+	__le16 vol_flags;
+	__u8 sect_size_bits;
+	__u8 sect_per_clus_bits;
+	__u8 num_fats;
+	__u8 phy_drv_no;
+	__u8 perc_in_use;
+	__u8 reserved2[7];
+};
+
+/* EXFAT PBR[BPB+BSX] (120 bytes) */
+struct pbr64 {
+	struct bpb64 bpb;
+	struct bsx64 bsx;
+};
+
+/* Common PBR[Partition Boot Record] (512 bytes) */
+struct pbr {
+	union {
+		__u8 raw[64];
+		struct bpb64 f64;
+	} bpb;
+	union {
+		__u8 raw[56];
+		struct bsx64 f64;
+	} bsx;
+	__u8 boot_code[390];
+	__le16 signature;
+};
+
+struct exfat_dentry {
+	__u8 type;
+	union {
+		struct {
+			__u8 num_ext;
+			__le16 checksum;
+			__le16 attr;
+			__le16 reserved1;
+			__le16 create_time;
+			__le16 create_date;
+			__le16 modify_time;
+			__le16 modify_date;
+			__le16 access_time;
+			__le16 access_date;
+			__u8 create_time_ms;
+			__u8 modify_time_ms;
+			__u8 access_time_ms;
+			__u8 reserved2[9];
+		} __attribute__((packed)) file; /* file directory entry */
+		struct {
+			__u8 flags;
+			__u8 reserved1;
+			__u8 name_len;
+			__le16 name_hash;
+			__le16 reserved2;
+			__le64 valid_size;
+			__le32 reserved3;
+			__le32 start_clu;
+			__le64 size;
+		} __attribute__((packed)) stream; /* stream extension directory entry */
+		struct {
+			__u8 flags;
+			__le16 unicode_0_14[15];
+		} __attribute__((packed)) name; /* file name directory entry */
+		struct {
+			__u8 flags;
+			__u8 reserved[18];
+			__le32 start_clu;
+			__le64 size;
+		} __attribute__((packed)) bitmap; /* allocation bitmap directory entry */
+		struct {
+			__u8 reserved1[3];
+			__le32 checksum;
+			__u8 reserved2[12];
+			__le32 start_clu;
+			__le64 size;
+		} __attribute__((packed)) upcase; /* up-case table directory entry */
+	} __attribute__((packed)) dentry;
+} __attribute__((packed));
+
+#define file_num_ext			dentry.file.num_ext
+#define file_checksum			dentry.file.checksum
+#define file_attr			dentry.file.attr
+#define file_create_time		dentry.file.create_time
+#define file_create_date		dentry.file.create_date
+#define file_modify_time		dentry.file.modify_time
+#define file_modify_date		dentry.file.modify_date
+#define file_access_time		dentry.file.access_time
+#define file_access_date		dentry.file.access_date
+#define file_create_time_ms		dentry.file.create_time_ms
+#define file_modify_time_ms		dentry.file.modify_time_ms
+#define file_access_time_ms		dentry.file.access_time_ms
+#define stream_flags			dentry.stream.flags
+#define stream_name_len			dentry.stream.name_len
+#define stream_name_hash		dentry.stream.name_hash
+#define stream_start_clu		dentry.stream.start_clu
+#define stream_valid_size		dentry.stream.valid_size
+#define stream_size			dentry.stream.size
+#define name_flags			dentry.name.flags
+#define name_unicode			dentry.name.unicode_0_14
+#define bitmap_flags			dentry.bitmap.flags
+#define bitmap_start_clu		dentry.bitmap.start_clu
+#define bitmap_size			dentry.bitmap.size
+#define upcase_start_clu		dentry.upcase.start_clu
+#define upcase_size			dentry.upcase.size
+#define upcase_checksum			dentry.upcase.checksum
+
+#endif /* !_EXFAT_H */

lib/Makefile.am

@@ -0,0 +1,5 @@
+AM_CFLAGS = -I$(top_srcdir)/include -fno-common
+
+lib_LTLIBRARIES = libexfat.la
+
+libexfat_la_SOURCES = libexfat.c

lib/libexfat.c

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2019 Namjae Jeon <[email protected]>
+ */
+
+
+

mkfs/Makefile.am

@@ -0,0 +1,6 @@
+AM_CFLAGS = -I$(top_srcdir)/include $(GLIB_CFLAGS) -fno-common
+mkfs_LDADD = $(top_builddir)/lib/libexfat.la
+
+sbin_PROGRAMS = mkfs.exfat
+
+mkfs_SOURCES = mkfs.c

mkfs/mkfs.c

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2019 Namjae Jeon <[email protected]>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+
+#include "exfat.h"
+
+static void usage(void)
+{       
+	fprintf(stderr, "exfat-tools version : %s\n", EXFAT_TOOLS_VERSION);
+	fprintf(stderr, "Usage: mkfs.exfat\n");
+
+	fprintf(stderr, "\t-v | --verbose\n");
+
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+	int c;
+        int ret = EXIT_FAILURE;
+
+        opterr = 0;
+        while ((c = getopt(argc, argv, "c:i:a:d:u:p:vh")) != EOF)
+                switch (c) {
+                case 'v':
+                        break;
+                case '?':
+                case 'h':
+                default:
+                        usage();
+        }
+
+	return 0;
+}