1 files changed, 215 insertions, 0 deletions
diff --git a/exfat/libexfat/exfat.h b/exfat/libexfat/exfat.h
new file mode 100644
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+++ b/exfat/libexfat/exfat.h
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+/*
+	exfat.h (29.08.09)
+	Definitions of structures and constants used in exFAT file system
+	implementation.
+
+	Copyright (C) 2010-2012  Andrew Nayenko
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that 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 <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef EXFAT_H_INCLUDED
+#define EXFAT_H_INCLUDED
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <stdbool.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include "exfatfs.h"
+#include "version.h"
+
+#define EXFAT_NAME_MAX 256
+#define EXFAT_ATTRIB_CONTIGUOUS 0x10000
+#define EXFAT_ATTRIB_CACHED     0x20000
+#define EXFAT_ATTRIB_DIRTY      0x40000
+#define EXFAT_ATTRIB_UNLINKED   0x80000
+#define IS_CONTIGUOUS(node) (((node).flags & EXFAT_ATTRIB_CONTIGUOUS) != 0)
+#define SECTOR_SIZE(sb) (1 << (sb).sector_bits)
+#define CLUSTER_SIZE(sb) (SECTOR_SIZE(sb) << (sb).spc_bits)
+#define CLUSTER_INVALID(c) \
+	((c) < EXFAT_FIRST_DATA_CLUSTER || (c) > EXFAT_LAST_DATA_CLUSTER)
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define DIV_ROUND_UP(x, d) (((x) + (d) - 1) / (d))
+#define ROUND_UP(x, d) (DIV_ROUND_UP(x, d) * (d))
+
+#define BMAP_GET(bitmap, index) \
+	(((uint8_t*) bitmap)[(index) / 8] & (1u << ((index) % 8)))
+#define BMAP_SET(bitmap, index) \
+	((uint8_t*) bitmap)[(index) / 8] |= (1u << ((index) % 8))
+#define BMAP_CLR(bitmap, index) \
+	((uint8_t*) bitmap)[(index) / 8] &= ~(1u << ((index) % 8))
+
+struct exfat_node
+{
+	struct exfat_node* parent;
+	struct exfat_node* child;
+	struct exfat_node* next;
+	struct exfat_node* prev;
+
+	int references;
+	uint32_t fptr_index;
+	cluster_t fptr_cluster;
+	cluster_t entry_cluster;
+	off64_t entry_offset;
+	cluster_t start_cluster;
+	int flags;
+	uint64_t size;
+	time_t mtime, atime;
+	le16_t name[EXFAT_NAME_MAX + 1];
+};
+
+enum exfat_mode
+{
+	EXFAT_MODE_RO,
+	EXFAT_MODE_RW,
+	EXFAT_MODE_ANY,
+};
+
+struct exfat_dev;
+
+struct exfat
+{
+	struct exfat_dev* dev;
+	struct exfat_super_block* sb;
+	le16_t* upcase;
+	size_t upcase_chars;
+	struct exfat_node* root;
+	struct
+	{
+		cluster_t start_cluster;
+		uint32_t size;				/* in bits */
+		uint8_t* chunk;
+		uint32_t chunk_size;		/* in bits */
+		bool dirty;
+	}
+	cmap;
+	char label[EXFAT_ENAME_MAX * 6 + 1]; /* a character can occupy up to
+											6 bytes in UTF-8 */
+	void* zero_cluster;
+	int dmask, fmask;
+	uid_t uid;
+	gid_t gid;
+	int ro;
+	bool noatime;
+};
+
+/* in-core nodes iterator */
+struct exfat_iterator
+{
+	struct exfat_node* parent;
+	struct exfat_node* current;
+};
+
+struct exfat_human_bytes
+{
+	uint64_t value;
+	const char* unit;
+};
+
+extern int exfat_errors;
+
+void exfat_bug(const char* format, ...)
+	__attribute__((format(printf, 1, 2), noreturn));
+void exfat_error(const char* format, ...)
+	__attribute__((format(printf, 1, 2)));
+void exfat_warn(const char* format, ...)
+	__attribute__((format(printf, 1, 2)));
+void exfat_debug(const char* format, ...)
+	__attribute__((format(printf, 1, 2)));
+
+struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode);
+int exfat_close(struct exfat_dev* dev);
+int exfat_fsync(struct exfat_dev* dev);
+enum exfat_mode exfat_get_mode(const struct exfat_dev* dev);
+off64_t exfat_get_size(const struct exfat_dev* dev);
+off64_t exfat_seek(struct exfat_dev* dev, off64_t offset, int whence);
+ssize_t exfat_read(struct exfat_dev* dev, void* buffer, size_t size);
+ssize_t exfat_write(struct exfat_dev* dev, const void* buffer, size_t size);
+void exfat_pread(struct exfat_dev* dev, void* buffer, size_t size,
+		off64_t offset);
+void exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
+		off64_t offset);
+ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
+		void* buffer, size_t size, off64_t offset);
+ssize_t exfat_generic_pwrite(struct exfat* ef, struct exfat_node* node,
+		const void* buffer, size_t size, off64_t offset);
+
+int exfat_opendir(struct exfat* ef, struct exfat_node* dir,
+		struct exfat_iterator* it);
+void exfat_closedir(struct exfat* ef, struct exfat_iterator* it);
+struct exfat_node* exfat_readdir(struct exfat* ef, struct exfat_iterator* it);
+int exfat_lookup(struct exfat* ef, struct exfat_node** node,
+		const char* path);
+int exfat_split(struct exfat* ef, struct exfat_node** parent,
+		struct exfat_node** node, le16_t* name, const char* path);
+
+off64_t exfat_c2o(const struct exfat* ef, cluster_t cluster);
+cluster_t exfat_next_cluster(const struct exfat* ef,
+		const struct exfat_node* node, cluster_t cluster);
+cluster_t exfat_advance_cluster(const struct exfat* ef,
+		struct exfat_node* node, uint32_t count);
+void exfat_flush_cmap(struct exfat* ef);
+int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size);
+uint32_t exfat_count_free_clusters(const struct exfat* ef);
+int exfat_find_used_sectors(const struct exfat* ef, off64_t* a, off64_t* b);
+
+void exfat_stat(const struct exfat* ef, const struct exfat_node* node,
+		struct stat* stbuf);
+void exfat_get_name(const struct exfat_node* node, char* buffer, size_t n);
+uint16_t exfat_start_checksum(const struct exfat_entry_meta1* entry);
+uint16_t exfat_add_checksum(const void* entry, uint16_t sum);
+le16_t exfat_calc_checksum(const struct exfat_entry_meta1* meta1,
+		const struct exfat_entry_meta2* meta2, const le16_t* name);
+uint32_t exfat_vbr_start_checksum(const void* sector, size_t size);
+uint32_t exfat_vbr_add_checksum(const void* sector, size_t size, uint32_t sum);
+le16_t exfat_calc_name_hash(const struct exfat* ef, const le16_t* name);
+void exfat_humanize_bytes(uint64_t value, struct exfat_human_bytes* hb);
+void exfat_print_info(const struct exfat_super_block* sb,
+		uint32_t free_clusters);
+
+int utf16_to_utf8(char* output, const le16_t* input, size_t outsize,
+		size_t insize);
+int utf8_to_utf16(le16_t* output, const char* input, size_t outsize,
+		size_t insize);
+size_t utf16_length(const le16_t* str);
+
+struct exfat_node* exfat_get_node(struct exfat_node* node);
+void exfat_put_node(struct exfat* ef, struct exfat_node* node);
+int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
+void exfat_reset_cache(struct exfat* ef);
+void exfat_flush_node(struct exfat* ef, struct exfat_node* node);
+int exfat_unlink(struct exfat* ef, struct exfat_node* node);
+int exfat_rmdir(struct exfat* ef, struct exfat_node* node);
+int exfat_mknod(struct exfat* ef, const char* path);
+int exfat_mkdir(struct exfat* ef, const char* path);
+int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path);
+void exfat_utimes(struct exfat_node* node, const struct timespec tv[2]);
+void exfat_update_atime(struct exfat_node* node);
+void exfat_update_mtime(struct exfat_node* node);
+const char* exfat_get_label(struct exfat* ef);
+int exfat_set_label(struct exfat* ef, const char* label);
+
+int exfat_mount(struct exfat* ef, const char* spec, const char* options);
+void exfat_unmount(struct exfat* ef);
+
+time_t exfat_exfat2unix(le16_t date, le16_t time, uint8_t centisec);
+void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time,
+		uint8_t* centisec);
+void exfat_tzset(void);
+
+#endif /* ifndef EXFAT_H_INCLUDED */