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))
38 struct exfat_node* parent;
39 struct exfat_node* child;
40 struct exfat_node* next;
41 struct exfat_node* prev;
45 cluster_t fptr_cluster;
46 cluster_t entry_cluster;
48 cluster_t start_cluster;
52 le16_t name[EXFAT_NAME_MAX + 1];
57 struct exfat_super_block* sb;
61 struct exfat_node* root;
64 cluster_t start_cluster;
65 uint32_t size; /* in bits */
67 uint32_t chunk_size; /* in bits */
74 /* in-core nodes iterator */
77 struct exfat_node* parent;
78 struct exfat_node* current;
81 extern int exfat_errors;
83 void exfat_bug(const char* format, ...);
84 void exfat_error(const char* format, ...);
85 void exfat_warn(const char* format, ...);
86 void exfat_debug(const char* format, ...);
88 void exfat_read_raw(void* buffer, size_t size, off_t offset, int fd);
89 void exfat_write_raw(const void* buffer, size_t size, off_t offset, int fd);
90 ssize_t exfat_read(const struct exfat* ef, struct exfat_node* node,
91 void* buffer, size_t size, off_t offset);
92 ssize_t exfat_write(struct exfat* ef, struct exfat_node* node,
93 const void* buffer, size_t size, off_t offset);
95 int exfat_opendir(struct exfat* ef, struct exfat_node* dir,
96 struct exfat_iterator* it);
97 void exfat_closedir(struct exfat* ef, struct exfat_iterator* it);
98 struct exfat_node* exfat_readdir(struct exfat* ef, struct exfat_iterator* it);
99 int exfat_lookup(struct exfat* ef, struct exfat_node** node,
102 off_t exfat_c2o(const struct exfat* ef, cluster_t cluster);
103 cluster_t exfat_next_cluster(const struct exfat* ef,
104 const struct exfat_node* node, cluster_t cluster);
105 cluster_t exfat_advance_cluster(const struct exfat* ef,
106 struct exfat_node* node, uint32_t count);
107 void exfat_flush_cmap(struct exfat* ef);
108 int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size);
110 void exfat_stat(const struct exfat_node* node, struct stat *stbuf);
111 time_t exfat_exfat2unix(le16_t date, le16_t time);
112 void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time);
113 void exfat_get_name(const struct exfat_node* node, char* buffer, size_t n);
114 uint16_t exfat_start_checksum(const struct exfat_file* entry);
115 uint16_t exfat_add_checksum(const void* entry, uint16_t sum);
117 int utf16_to_utf8(char* output, const le16_t* input, size_t outsize,
119 int utf8_to_utf16(le16_t* output, const char* input, size_t outsize,
121 size_t utf16_length(const le16_t* str);
123 struct exfat_node* exfat_get_node(struct exfat_node* node);
124 void exfat_put_node(struct exfat* ef, struct exfat_node* node);
125 int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
126 void exfat_reset_cache(struct exfat* ef);
127 void exfat_flush_node(struct exfat* ef, struct exfat_node* node);
128 int exfat_unlink(struct exfat* ef, struct exfat_node* node);
129 int exfat_rmdir(struct exfat* ef, struct exfat_node* node);
131 int exfat_mount(struct exfat* ef, const char* spec);
132 void exfat_unmount(struct exfat* ef);
134 #endif /* ifndef EXFAT_H_INCLUDED */