X-Git-Url: https://git.sven.stormbind.net/?p=sven%2Fexfatprogs.git;a=blobdiff_plain;f=include%2Flibexfat.h;h=062350135b76a85ff71103ceaccc702291ac128c;hp=53a82a1efb31038d3c31d574b6487f6646a154ab;hb=03290761e3849db9b13d2d3b176b36ab31c395bb;hpb=dcb4e80c267579d1a68e3f34f6b750e2940dbcc2

diff --git a/include/libexfat.h b/include/libexfat.h
index 53a82a1..0623501 100644
--- a/include/libexfat.h
+++ b/include/libexfat.h
@@ -10,6 +10,8 @@
 #include <wchar.h>
 #include <limits.h>
 
+typedef __u32 clus_t;
+
 #define KB			(1024)
 #define MB			(1024*1024)
 #define GB			(1024UL*1024UL*1024UL)
@@ -35,6 +37,7 @@
 #define VOLUME_LABEL_BUFFER_SIZE	(VOLUME_LABEL_MAX_LEN*MB_LEN_MAX+1)
 
 /* Upcase table macro */
+#define EXFAT_UPCASE_TABLE_CHARS	(0x10000)
 #define EXFAT_UPCASE_TABLE_SIZE		(5836)
 
 /* Flags for tune.exfat and exfatlabel */
@@ -45,6 +48,10 @@
 
 #define EXFAT_MAX_SECTOR_SIZE		4096
 
+#define EXFAT_CLUSTER_SIZE(pbr) (1 << ((pbr)->bsx.sect_size_bits +	\
+					(pbr)->bsx.sect_per_clus_bits))
+#define EXFAT_SECTOR_SIZE(pbr) (1 << (pbr)->bsx.sect_size_bits)
+
 enum {
 	BOOT_SEC_IDX = 0,
 	EXBOOT_SEC_IDX,
@@ -79,12 +86,51 @@ struct exfat_user_input {
 	unsigned int volume_serial;
 };
 
+struct exfat;
+struct exfat_inode;
+
+#ifdef WORDS_BIGENDIAN
+typedef __u8	bitmap_t;
+#else
+typedef __u32	bitmap_t;
+#endif
+
+#define BITS_PER	(sizeof(bitmap_t) * 8)
+#define BIT_MASK(__c)	(1 << ((__c) % BITS_PER))
+#define BIT_ENTRY(__c)	((__c) / BITS_PER)
+
+#define EXFAT_BITMAP_SIZE(__c_count)	\
+	(DIV_ROUND_UP(__c_count, BITS_PER) * sizeof(bitmap_t))
+
+static inline bool exfat_bitmap_get(char *bmap, clus_t c)
+{
+	clus_t cc = c - EXFAT_FIRST_CLUSTER;
+
+	return ((bitmap_t *)(bmap))[BIT_ENTRY(cc)] & BIT_MASK(cc);
+}
+
+static inline void exfat_bitmap_set(char *bmap, clus_t c)
+{
+	clus_t cc = c - EXFAT_FIRST_CLUSTER;
+
+	(((bitmap_t *)(bmap))[BIT_ENTRY(cc)] |= BIT_MASK(cc));
+}
+
+static inline void exfat_bitmap_clear(char *bmap, clus_t c)
+{
+	clus_t cc = c - EXFAT_FIRST_CLUSTER;
+	(((bitmap_t *)(bmap))[BIT_ENTRY(cc)] &= ~BIT_MASK(cc));
+}
+
+void exfat_bitmap_set_range(struct exfat *exfat, char *bitmap,
+			    clus_t start_clus, clus_t count);
+int exfat_bitmap_find_zero(struct exfat *exfat, char *bmap,
+			   clus_t start_clu, clus_t *next);
+int exfat_bitmap_find_one(struct exfat *exfat, char *bmap,
+			  clus_t start_clu, clus_t *next);
+
 void show_version(void);
 
-void exfat_set_bit(struct exfat_blk_dev *bd, char *bitmap,
-		unsigned int clu);
-void exfat_clear_bit(struct exfat_blk_dev *bd, char *bitmap,
-		unsigned int clu);
 wchar_t exfat_bad_char(wchar_t w);
 void boot_calc_checksum(unsigned char *sector, unsigned short size,
 		bool is_boot_sec, __le32 *checksum);
@@ -99,9 +145,8 @@ ssize_t exfat_utf16_enc(const char *in_str, __u16 *out_str, size_t out_size);
 ssize_t exfat_utf16_dec(const __u16 *in_str, size_t in_len,
 			char *out_str, size_t out_size);
 off_t exfat_get_root_entry_offset(struct exfat_blk_dev *bd);
-int exfat_show_volume_label(struct exfat_blk_dev *bd, off_t root_clu_off);
-int exfat_set_volume_label(struct exfat_blk_dev *bd,
-		char *label_input, off_t root_clu_off);
+int exfat_read_volume_label(struct exfat *exfat);
+int exfat_set_volume_label(struct exfat *exfat, char *label_input);
 int exfat_read_sector(struct exfat_blk_dev *bd, void *buf,
 		unsigned int sec_off);
 int exfat_write_sector(struct exfat_blk_dev *bd, void *buf,
@@ -114,7 +159,17 @@ int exfat_set_volume_serial(struct exfat_blk_dev *bd,
 		struct exfat_user_input *ui);
 unsigned int exfat_clus_to_blk_dev_off(struct exfat_blk_dev *bd,
 		unsigned int clu_off, unsigned int clu);
-
+int exfat_get_next_clus(struct exfat *exfat, clus_t clus, clus_t *next);
+int exfat_get_inode_next_clus(struct exfat *exfat, struct exfat_inode *node,
+			      clus_t clus, clus_t *next);
+int exfat_set_fat(struct exfat *exfat, clus_t clus, clus_t next_clus);
+off_t exfat_s2o(struct exfat *exfat, off_t sect);
+off_t exfat_c2o(struct exfat *exfat, unsigned int clus);
+int exfat_o2c(struct exfat *exfat, off_t device_offset,
+	      unsigned int *clu, unsigned int *offset);
+bool exfat_heap_clus(struct exfat *exfat, clus_t clus);
+int exfat_root_clus_count(struct exfat *exfat);
+int read_boot_sect(struct exfat_blk_dev *bdev, struct pbr **bs);
 
 /*
  * Exfat Print