1 files changed, 49 insertions, 0 deletions
diff --git a/bfs/inode.ha b/bfs/inode.ha
new file mode 100644
index 0000000..cdd3a80
--- /dev/null
+++ b/bfs/inode.ha
@@ -0,0 +1,49 @@
+use io;
+
+// BFS inode: structure that stores metadata about
+// resources in the filesystem
+export type inode = struct {
+	// Root block of the file content
+	@offset(0) block: u64,
+
+	// Length of file
+	@offset(8) length: u64,
+
+	// Timestamp of last modification
+	@offset(16) last_modified: u64,
+
+	// Owning user name
+	@offset(24) owner: [17]u8,
+
+	// Owning group name
+	@offset(41) group: [17]u8,
+
+	// Number of references of the inode
+	@offset(58) references: u16,
+
+	// Permission flags
+	@offset(60) permissions: u8,
+
+	// Attribute flags
+	@offset(61) attributes: u8,
+
+	// Levels of mapping for file content
+	@offset(62) map_levels: u8,
+
+	// Reserved
+	@offset(63) reserved0: u8
+};
+
+// Get an inode from the filesystem given inode ID
+export fn getinode(filesystem: *bfs, inid: u64, in: *inode) (void | io::error) = {
+	const inaddr = (inid << 6): io::off;
+
+	pread(filesystem.device, in: *[size(inode)]u8, inaddr)?;
+};
+
+// Sets an inode in the filesystem given inode ID
+export fn setinode(filesystem: *bfs, inid: u64, in: *inode) (void | io::error) = {
+	const inaddr = (inid << 6): io::off;
+
+	pwrite(filesystem.device, in: *[size(inode)]u8, inaddr)?;
+};