*
* 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; version 2 of the License.
+ * the Free Software Foundation; either version 2 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
void
ao_fat_init(void);
+#define AO_FAT_FILE_REGULAR 0x00
#define AO_FAT_FILE_READ_ONLY 0x01
#define AO_FAT_FILE_HIDDEN 0x02
#define AO_FAT_FILE_SYSTEM 0x04
#define AO_FAT_DENT_EMPTY 0xe5
#define AO_FAT_DENT_END 0x00
-uint8_t
-ao_fat_open(char name[11]);
+#define AO_FAT_IS_FILE(attr) (((attr) & (AO_FAT_FILE_VOLUME_LABEL|AO_FAT_FILE_DIRECTORY)) == 0)
+#define AO_FAT_IS_DIR(attr) (((attr) & (AO_FAT_FILE_DIRECTORY|AO_FAT_FILE_VOLUME_LABEL)) == AO_FAT_FILE_DIRECTORY)
+
+/* API error codes */
+#define AO_FAT_SUCCESS 0
+#define AO_FAT_EPERM 1
+#define AO_FAT_ENOENT 2
+#define AO_FAT_EIO 4
+#define AO_FAT_EBADF 9
+#define AO_FAT_EACCESS 13
+#define AO_FAT_EEXIST 17
+#define AO_FAT_ENOTDIR 20
+#define AO_FAT_EISDIR 21
+#define AO_FAT_EMFILE 24
+#define AO_FAT_EFBIG 27
+#define AO_FAT_ENOSPC 28
+#define AO_FAT_EDIREOF 29
+
+/* ao_fat_setup return values */
+#define AO_FAT_FILESYSTEM_SUCCESS 0
+#define AO_FAT_FILESYSTEM_MBR_READ_FAILURE 1
+#define AO_FAT_FILESYSTEM_INVALID_MBR_SIGNATURE 2
+#define AO_FAT_FILESYSTEM_INVALID_PARTITION_TYPE 3
+#define AO_FAT_FILESYSTEM_ZERO_SIZED_PARTITION 4
+
+#define AO_FAT_FILESYSTEM_BOOT_READ_FAILURE 5
+#define AO_FAT_FILESYSTEM_INVALID_BOOT_SIGNATURE 6
+#define AO_FAT_FILESYSTEM_INVALID_SECTOR_SIZE 7
-uint8_t
-ao_fat_creat(char name[11]);
+void
+ao_fat_sync(void);
void
-ao_fat_close(void);
+ao_fat_unmount(void);
+
+int8_t
+ao_fat_full(void);
+
+int8_t
+ao_fat_open(char name[11], uint8_t mode);
+
+#define AO_FAT_OPEN_READ 0
+#define AO_FAT_OPEN_WRITE 1
+#define AO_FAT_OPEN_RW 2
+
+int8_t
+ao_fat_creat(char name[11]);
+
+int8_t
+ao_fat_close(int8_t fd);
int
-ao_fat_read(uint8_t *dest, int len);
+ao_fat_read(int8_t fd, void *dest, int len);
int
-ao_fat_write(uint8_t *buf, int len);
+ao_fat_write(int8_t fd, void *src, int len);
#define AO_FAT_SEEK_SET 0
#define AO_FAT_SEEK_CUR 1
#define AO_FAT_SEEK_END 2
-uint32_t
-bao_fat_seek(int32_t pos, uint8_t whence);
+int32_t
+ao_fat_seek(int8_t fd, int32_t pos, uint8_t whence);
-uint8_t
+int8_t
ao_fat_unlink(char name[11]);
-uint8_t
+int8_t
ao_fat_rename(char old[11], char new[11]);
+/*
+ * Byte offset within a file. Supports files up to 2GB in size
+ */
+typedef int32_t ao_fat_offset_t;
+
+/*
+ * Cluster index in partition data space
+ */
+typedef uint32_t ao_fat_cluster_t;
+
+/*
+ * Sector offset within partition
+ */
+typedef uint32_t ao_fat_sector_t;
+
+/*
+ * Index within the root directory
+ */
+typedef uint16_t ao_fat_dirent_t;
+
+/*
+ * Offset within a cluster (or sector)
+ */
+typedef uint16_t ao_fat_cluster_offset_t;
+
struct ao_fat_dirent {
- char name[11];
- uint8_t attr;
- uint32_t size;
- uint16_t cluster;
- uint16_t entry;
+ char name[11];
+ uint8_t attr;
+ uint32_t size;
+ ao_fat_cluster_t cluster;
+ uint16_t entry;
};
-uint8_t
+int8_t
ao_fat_readdir(uint16_t *entry, struct ao_fat_dirent *dirent);
#endif /* _AO_FAT_H_ */