X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fdrivers%2Fao_fat.h;h=39f4207bb1dc6e418a02769918b4c1c06bf75c2d;hp=2bf6222e69701bf455e65792444b580bbe28ebbb;hb=1085ec5d57e0ed5d132f2bbdac1a0b6a32c0ab4a;hpb=e14834817f78a04b4d9b44a8373119dffd42c966

diff --git a/src/drivers/ao_fat.h b/src/drivers/ao_fat.h
index 2bf6222e..39f4207b 100644
--- a/src/drivers/ao_fat.h
+++ b/src/drivers/ao_fat.h
@@ -3,7 +3,8 @@
  *
  * 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
@@ -21,6 +22,7 @@
 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
@@ -31,43 +33,110 @@ ao_fat_init(void);
 #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_ */