From 5ea5172cae37a2003f581621b6c07462b399227e Mon Sep 17 00:00:00 2001
From: Able <abl3theabove@gmail.com>
Date: Mon, 7 Feb 2022 21:14:47 -0600
Subject: [PATCH] ext2fs

---
 ableos/src/ext2fs/mod.rs           | 93 ++++++++++++++++++++++++++++++
 ableos/src/kmain.rs                |  1 +
 ableos/src/lib.rs                  |  1 +
 ableos/src/proto_filetable/file.rs |  8 +++
 4 files changed, 103 insertions(+)
 create mode 100644 ableos/src/ext2fs/mod.rs

diff --git a/ableos/src/ext2fs/mod.rs b/ableos/src/ext2fs/mod.rs
new file mode 100644
index 0000000..85c0f77
--- /dev/null
+++ b/ableos/src/ext2fs/mod.rs
@@ -0,0 +1,93 @@
+use alloc::string::{String, ToString};
+
+pub enum FileSystemStates {
+    Null = 0,
+    Clean = 1,
+    Error = 2,
+}
+
+pub enum ErrorHandleMethod {
+    Null = 0,
+    Ignore = 1,
+    RemountFileSystem = 2,
+    Panic = 3,
+}
+
+/// Used by ableOS to identify the creator of the file system
+#[repr(C)]
+pub enum CreatorOperatingSystemID {
+    Linux = 0,
+    GNU_HURD = 1,
+    // 2 	MASIX (an operating system developed by Rémy Card, one of the developers of ext2)
+    MASIX = 2,
+    // 3 	FreeBSD
+    FreeBsd = 3,
+    // 4 	Other "Lites" (BSD4.4-Lite derivatives such as NetBSD, OpenBSD, XNU/Darwin, etc.)
+    LITES = 4,
+
+    AbleOS = 5,
+    Unknown = 6,
+}
+
+impl CreatorOperatingSystemID {
+    pub fn to_string(&self) -> String {
+        match self {
+            &CreatorOperatingSystemID::Linux => "Linux".to_string(),
+            &CreatorOperatingSystemID::GNU_HURD => "GNU_HURD".to_string(),
+            &CreatorOperatingSystemID::MASIX => "MASIX".to_string(),
+            &CreatorOperatingSystemID::FreeBsd => "FREE_BSD".to_string(),
+            &CreatorOperatingSystemID::LITES => "LITES".to_string(),
+            &CreatorOperatingSystemID::AbleOS => "ABLEOS".to_string(),
+            &CreatorOperatingSystemID::Unknown => "Unknown".to_string(),
+        }
+    }
+    pub fn match_to_int(id: CreatorOperatingSystemID) -> u8 {
+        match id {
+            Self::Linux => 0,
+            Self::GNU_HURD => 1,
+            Self::MASIX => 2,
+            Self::FreeBsd => 3,
+            Self::LITES => 4,
+            Self::AbleOS => 5,
+            _ => 6,
+        }
+    }
+    pub fn match_to_enum(id: u8) -> CreatorOperatingSystemID {
+        match id {
+            0 => Self::Linux,
+            1 => Self::GNU_HURD,
+            2 => Self::MASIX,
+            3 => Self::FreeBsd,
+            4 => Self::LITES,
+            5 => Self::AbleOS,
+            _ => Self::Unknown,
+        }
+    }
+}
+
+/*
+0x001 	00001 	Other—execute permission
+0x002 	00002 	Other—write permission
+0x004 	00004 	Other—read permission
+0x008 	00010 	Group—execute permission
+0x010 	00020 	Group—write permission
+0x020 	00040 	Group—read permission
+0x040 	00100 	User—execute permission
+0x080 	00200 	User—write permission
+0x100 	00400 	User—read permission
+0x200 	01000 	Sticky Bit
+0x400 	02000 	Set group ID
+0x800 	04000 	Set user ID*/
+pub struct FilePermissions(pub u16);
+
+/*
+0x1000 	FIFO
+0x2000 	Character device
+0x4000 	Directory
+0x6000 	Block device
+0x8000 	Regular file
+0xA000 	Symbolic link
+0xC000 	Unix socket
+*/
+
+pub struct InodeType(pub u16);
diff --git a/ableos/src/kmain.rs b/ableos/src/kmain.rs
index 7e0858c..861fb83 100644
--- a/ableos/src/kmain.rs
+++ b/ableos/src/kmain.rs
@@ -31,6 +31,7 @@ use {
 };
 
 lazy_static! {
+    // TODO: Change this structure to allow for multiple cores loaded
     pub static ref TICK: AtomicU64 = AtomicU64::new(0);
     pub static ref BOOT_CONF: BootConfig = boot_conf::BootConfig::new();
 }
diff --git a/ableos/src/lib.rs b/ableos/src/lib.rs
index 5e759d1..0ecab3d 100644
--- a/ableos/src/lib.rs
+++ b/ableos/src/lib.rs
@@ -32,6 +32,7 @@ pub mod arch;
 
 #[macro_use]
 pub mod print;
+pub mod ext2fs;
 
 #[macro_use]
 pub extern crate log;
diff --git a/ableos/src/proto_filetable/file.rs b/ableos/src/proto_filetable/file.rs
index 16f6fe1..4e0f0be 100644
--- a/ableos/src/proto_filetable/file.rs
+++ b/ableos/src/proto_filetable/file.rs
@@ -8,10 +8,18 @@ pub struct PathRep {
     pub file_name: String,
 }
 
+#[derive(Debug)]
+pub struct FilePermissions {
+    pub read: bool,
+    pub write: bool,
+    pub execute: bool,
+}
+
 #[derive(Debug)]
 pub struct FileMetadata {
     pub file_type: String,
     pub size: usize,
+    // pub permissions: FilePermissions,
 }
 
 #[derive(Debug, Clone, PartialEq)]