File system initialization

Simple I/O (sio) interfaced, not yet implemented

1 files changed, 65 insertions, 0 deletions

diff --git a/sw/z80/kernel/include/fs/fs.h b/sw/z80/kernel/include/fs/fs.h
new file mode 100644
index 0000000..62bef36
--- /dev/null
+++ b/sw/z80/kernel/include/fs/fs.h
@@ -0,0 +1,65 @@
+#ifndef INODE_H
+#define INODE_H
+
+#include "types.h"
+
+#define FS_OFFSET 0x1000
+
+#define FS_BLOCKS_SIZE 512
+#define FS_BLOCKS_N     8
+#define FS_BLOCKS_IND   6
+
+#define INODE_TYPE_FILE   0x0
+#define INODE_TYPE_DIR    0x1
+#define INODE_TYPE_HLINK    0x2
+#define INODE_TYPE_SLINK    0x3
+
+typedef struct time_s
+{
+    struct
+    {
+        uint    minutes :6;
+        uint    hour    :5;
+
+    } time;
+
+    struct
+    {
+        uint    day     :5;
+        uint    month   :4;
+        uint    year    :12;
+
+    } date;
+
+} time_t;
+
+struct fs_superblock
+{
+    uint8_t     magic;           // identifier
+
+    uint16_t    blk_size;           // size of a single block
+    uint16_t    imap_size;          // quantity of inodes
+    uint16_t    dmap_size;          // quantity of blocks
+}
+
+struct fs_inode
+{
+    
+    /* inode meta data */
+    uint        mode :3;  // chmod
+    uint        uid :3;   // chown
+    uint        type :2;  // file, dir, hard-link, sym-link
+
+    /* data storage informations */
+    uint24_t     size;
+    uint16_t     blocks[FS_BLOCKS_N];
+
+}
+
+struct fs_inumber
+{
+    uint    dev : 4;    // device id, global in the fs
+    ino_t   rel;    // inode id relative to the volume
+}
+
+#endif