3 * Definitions of structures and constants used in exFAT file system
6 * Created by Andrew Nayenko on 29.08.09.
7 * This software is distributed under the GNU General Public License
8 * version 3 or any later.
11 #ifndef EXFAT_H_INCLUDED
12 #define EXFAT_H_INCLUDED
18 #include <sys/types.h>
21 #define EXFAT_VERSION_MAJOR 0
22 #define EXFAT_VERSION_MINOR 5
24 #define EXFAT_NAME_MAX 256
25 #define EXFAT_ATTRIB_CONTIGUOUS 0x10000
26 #define EXFAT_ATTRIB_CACHED 0x20000
27 #define EXFAT_ATTRIB_DIRTY 0x40000
28 #define EXFAT_ATTRIB_UNLINKED 0x80000
29 #define IS_CONTIGUOUS(node) (((node).flags & EXFAT_ATTRIB_CONTIGUOUS) != 0)
30 #define BLOCK_SIZE(sb) (1 << (sb).block_bits)
31 #define CLUSTER_SIZE(sb) (BLOCK_SIZE(sb) << (sb).bpc_bits)
32 #define CLUSTER_INVALID(c) ((c) == EXFAT_CLUSTER_BAD || (c) == EXFAT_CLUSTER_END)
34 #define MIN(a, b) ((a) < (b) ? (a) : (b))
35 #define DIV_ROUND_UP(x, d) (((x) + (d) - 1) / (d))
39 struct exfat_node* parent;
40 struct exfat_node* child;
41 struct exfat_node* next;
42 struct exfat_node* prev;
46 cluster_t fptr_cluster;
47 cluster_t entry_cluster;
49 cluster_t start_cluster;
53 le16_t name[EXFAT_NAME_MAX + 1];
58 struct exfat_super_block* sb;
62 struct exfat_node* root;
65 cluster_t start_cluster;
66 uint32_t size; /* in bits */
68 uint32_t chunk_size; /* in bits */
76 /* in-core nodes iterator */
79 struct exfat_node* parent;
80 struct exfat_node* current;
83 extern int exfat_errors;
85 void exfat_bug(const char* format, ...)
86 __attribute__((format(printf, 1, 2), noreturn));
87 void exfat_error(const char* format, ...)
88 __attribute__((format(printf, 1, 2)));
89 void exfat_warn(const char* format, ...)
90 __attribute__((format(printf, 1, 2)));
91 void exfat_debug(const char* format, ...)
92 __attribute__((format(printf, 1, 2)));
94 void exfat_read_raw(void* buffer, size_t size, off_t offset, int fd);
95 void exfat_write_raw(const void* buffer, size_t size, off_t offset, int fd);
96 ssize_t exfat_read(const struct exfat* ef, struct exfat_node* node,
97 void* buffer, size_t size, off_t offset);
98 ssize_t exfat_write(struct exfat* ef, struct exfat_node* node,
99 const void* buffer, size_t size, off_t offset);
101 int exfat_opendir(struct exfat* ef, struct exfat_node* dir,
102 struct exfat_iterator* it);
103 void exfat_closedir(struct exfat* ef, struct exfat_iterator* it);
104 struct exfat_node* exfat_readdir(struct exfat* ef, struct exfat_iterator* it);
105 int exfat_lookup(struct exfat* ef, struct exfat_node** node,
107 int exfat_split(struct exfat* ef, struct exfat_node** node, le16_t* name,
110 off_t exfat_c2o(const struct exfat* ef, cluster_t cluster);
111 cluster_t exfat_next_cluster(const struct exfat* ef,
112 const struct exfat_node* node, cluster_t cluster);
113 cluster_t exfat_advance_cluster(const struct exfat* ef,
114 struct exfat_node* node, uint32_t count);
115 void exfat_flush_cmap(struct exfat* ef);
116 int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size);
118 void exfat_stat(const struct exfat* ef, const struct exfat_node* node,
120 time_t exfat_exfat2unix(le16_t date, le16_t time);
121 void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time);
122 void exfat_get_name(const struct exfat_node* node, char* buffer, size_t n);
123 uint16_t exfat_start_checksum(const struct exfat_file* entry);
124 uint16_t exfat_add_checksum(const void* entry, uint16_t sum);
125 le16_t exfat_calc_checksum(const struct exfat_file* meta1,
126 const struct exfat_file_info* meta2, const le16_t* name);
127 le16_t exfat_calc_name_hash(const struct exfat* ef, const le16_t* name);
129 int utf16_to_utf8(char* output, const le16_t* input, size_t outsize,
131 int utf8_to_utf16(le16_t* output, const char* input, size_t outsize,
133 size_t utf16_length(const le16_t* str);
135 struct exfat_node* exfat_get_node(struct exfat_node* node);
136 void exfat_put_node(struct exfat* ef, struct exfat_node* node);
137 int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
138 void exfat_reset_cache(struct exfat* ef);
139 void exfat_flush_node(struct exfat* ef, struct exfat_node* node);
140 int exfat_unlink(struct exfat* ef, struct exfat_node* node);
141 int exfat_rmdir(struct exfat* ef, struct exfat_node* node);
142 int exfat_mknod(struct exfat* ef, const char* path);
143 int exfat_mkdir(struct exfat* ef, const char* path);
145 int exfat_mount(struct exfat* ef, const char* spec, const char* options);
146 void exfat_unmount(struct exfat* ef);
148 #endif /* ifndef EXFAT_H_INCLUDED */