X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Design%20Notes%2FAcessFS.txt;fp=Design%20Notes%2FAcessFS.txt;h=7c74bebda3261a133944fd5147162595dc580bc6;hb=4d04d710e6d90ac28524925859a7ef621c675bcb;hp=0000000000000000000000000000000000000000;hpb=86f49ede5038704ac4f12eab9794e9a8110a4985;p=tpg%2Facess2.git

diff --git a/Design Notes/AcessFS.txt b/Design Notes/AcessFS.txt
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+Acess File System
+- Database Design
+
+== Data Strutures ==
+Blocks are of a size specified in the superblock
+- Superblock
+ > Fixed offset: 1024 bytes
+- Field Table
+ > Offset set in superblock
+- Index Table
+- Inode Table
+
+=== Superblock ===
+struct sSuperblock {
+	Uint8	Magic[4];	// == '\xACFS'+Version
+	Uint8	BlockSize;	// TrueSize = 2^(7+BlockSize)
+};
+
+=== Field Table ===
+struct sFieldTableEntry {
+	Uint16	Ident;
+	Uint8	Type;
+	Uint8	Length;
+	char	Text[];
+} FieldTable[SuperBlock.NFields];
+
+=== Index Table ==
+struct sIndexTableEntry {
+	Uint16	Field;
+	Uint16	CheckSum;
+	Uint32	Block;
+} IndexTable[SuperBlock.NFields];
+
+=== Index Table entry ==
+struct {
+	Uint32	NumEntries;
+	Uint32	Links[];
+};
+
+=== Inode Table ===
+struct sInodeTable {
+	
+};
+
+=== Inode ===
+struct sInodeEntry {
+	Uint16	Name;
+	Uint8	Size;
+	Uint8	Checksum;
+	Uint8	data[];
+};
+
+Each `sInodeEntry` defines an entry in a "database"
+