Filesystem struct order

1 files changed, 35 insertions, 21 deletions

diff --git a/sw/z80/kernel/include/filesystem.h b/sw/z80/kernel/include/filesystem.h
index 6505d5e..98c1e90 100644
--- a/sw/z80/kernel/include/filesystem.h
+++ b/sw/z80/kernel/include/filesystem.h
@@ -5,9 +5,8 @@
 
 #define FS_OFFSET 0x1000
 
-#define FS_BLOCK_SIZE   512
+#define FS_BLOCKS_SIZE 512
 #define FS_BLOCKS_N     12
-/* #define FS_IBLOCKS_N     1 */
 
 #define INODE_TYPE_FILE 0
 #define INODE_TYPE_DIR  1
@@ -17,44 +16,47 @@ typedef struct time_s
 {
     uint16_t time;
     uint16_t date;
+
 } time_t;
 
 
 /* on-disk structures */
 struct fs_superblock
 {
-    uint8_t     magic;
-    uint16_t    blk_size;   /* default is 512 bytes */
-    uint16_t    imap_size;  /* size of the inode bitmap in blocks */
-    uint16_t    dmap_size;  /* size of the data blocks map in blocks */
+    uint        magic :5;           /* identifier */
+    uint        serial_port :3;     /* serial port id from serial.h */
+    uint16_t    blk_size;           /* default is 512 bytes */
+    uint16_t    imap_size;          /* size of the inode table in blocks */
+    uint16_t    dmap_size;          /* size of the data blocks map in blocks */
 };
 
 
-struct fs_blk
+struct fs_blk_entry
 {
-    uint    size;
+    uint16_t b_number;      /* block number */
+    uint16_t data_size;     /* bytes used   */
 };
 
 typedef struct fs_inode
 {
-    uint        i_used :1; // inode is free
-    uint        i_mode :3; // inode mode (rwx)
 
-    uint8_t     i_uid;     // user (owner) id
-    uint16_t    i_number;  // identifier
+    uint16_t    i_number;       /* identifier */
 
-    uint16_t    i_blocks;  // number of blocks
+    uint        i_mode :3;      /* inode mode (rwx) */
+    uint        i_uid :3;       /* user (owner) id  */
+    uint        i_type :2;      /* inode type */
 
-    struct fs_blk   i_block[FS_BLOCKS_N];   // direct blocks
-/*    struct fs_blk   i_iblock[FS_IBLOCKS_N]; // indirect blocks */
+    uint8_t     i_blocks;       /* number of blocks */
+    struct fs_blk_entry   i_block[FS_BLOCKS_N];   /* direct blocks */
     
-    inode_t     *parent;
+    uint16_t     parent;
+
 } inode_t;
 
 /* inode table structures */
+/* i_number is derived from location */
 struct fs_inode_entry
 {
-    uint16_t    i_number;
     uint8_t     str_len;
     char        name[24];
 };
@@ -67,11 +69,23 @@ struct filesystem
     inode_t *mntpt;
 };
 
-void fs_parse_superblock(struct filesystem *fs);
+struct filesystem * fs_parse_superblock(struct filesystem *fs);
+
+/* resolves an arbitrary path */
+uint16_t fs_parse_path(const char *path);
+
+/* gets inode from inumber */
+inode_t * fs_get_inode(inode_t *buffer, uint16_t i_number);
+
+inode_t * fs_new_inode(inode_t *inode, const char *name);
+
+int fs_free_inode(const inode_t *inode);
+
+void fs_chmod(inode_t *inode, uint8_t mode);
+
+void fs_chown(inode_t *inode, uint8_t uid);
 
-void fs_write_imap();
-void fs_write_dmap();
+int fs_rename(inode_t *inode, const char *name);
 
-/* void fs_ */
 
 #endif // __FILESYSTEM_H__