Definitions of structures and constants used in exFAT file system
implementation.
- Copyright (C) 2009, 2010 Andrew Nayenko
+ Copyright (C) 2010-2013 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
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
+#include <stdbool.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "exfatfs.h"
#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_CLUSTER_BAD || (c) == EXFAT_CLUSTER_END)
+#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)))
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;
- int fd;
le16_t* upcase;
size_t upcase_chars;
struct exfat_node* root;
uint32_t size; /* in bits */
uint8_t* chunk;
uint32_t chunk_size; /* in bits */
- int dirty;
+ bool dirty;
}
cmap;
char label[EXFAT_ENAME_MAX * 6 + 1]; /* a character can occupy up to
uid_t uid;
gid_t gid;
int ro;
- int ro_fallback;
- int noatime;
+ bool noatime;
};
/* in-core nodes iterator */
void exfat_debug(const char* format, ...)
__attribute__((format(printf, 1, 2)));
-int exfat_open(const char* spec, int ro);
-void exfat_read_raw(void* buffer, size_t size, off_t offset, int fd);
-void exfat_write_raw(const void* buffer, size_t size, off_t offset, int fd);
-ssize_t exfat_read(const struct exfat* ef, struct exfat_node* node,
+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);
+off_t exfat_get_size(const struct exfat_dev* dev);
+off_t exfat_seek(struct exfat_dev* dev, off_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,
+ off_t offset);
+void exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size,
+ off_t offset);
+ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off_t offset);
-ssize_t exfat_write(struct exfat* ef, struct exfat_node* node,
+ssize_t exfat_generic_pwrite(struct exfat* ef, struct exfat_node* node,
const void* buffer, size_t size, off_t offset);
int exfat_opendir(struct exfat* ef, struct exfat_node* dir,
void exfat_stat(const struct exfat* ef, const struct exfat_node* node,
struct stat* stbuf);
-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_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);
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 */