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-rw-r--r--src/disk/inode.rs310
1 files changed, 0 insertions, 310 deletions
diff --git a/src/disk/inode.rs b/src/disk/inode.rs
deleted file mode 100644
index e686d01..0000000
--- a/src/disk/inode.rs
+++ /dev/null
@@ -1,310 +0,0 @@
-use crate::utils;
-use bitflags::bitflags;
-use fuser::FileType;
-
-pub const DIRECT_NUMBER: usize = 15;
-
-#[derive(Debug, Clone, Copy)]
-pub struct InodeMode(pub u16);
-
-bitflags! {
- impl InodeMode: u16 {
- const IXOTH = 0x0001;
- const IWOTH = 0x0002;
- const IROTH = 0x0004;
- const IXGRP = 0x0008;
- const IWGRP = 0x0010;
- const IRGRP = 0x0020;
- const IXUSR = 0x0040;
- const IWUSR = 0x0080;
- const IRUSR = 0x0100;
- const ISVTX = 0x0200;
- const ISGID = 0x0400;
- const ISUID = 0x0800;
- // These are mutually-exclusive:
- const IFIFO = 0x1000;
- const IFCHR = 0x2000;
- const IFDIR = 0x4000;
- const IFBLK = 0x6000;
- const IFREG = 0x8000;
- const IFLNK = 0xA000;
- const IFSOCK = 0xC000;
- }
-}
-
-impl InodeMode {
- #[allow(unused)]
- pub(crate) fn exec_other(&self) -> bool {
- self.0 & Self::IXOTH.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn write_other(&self) -> bool {
- self.0 & Self::IWOTH.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn read_other(&self) -> bool {
- self.0 & Self::IROTH.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn exec_group(&self) -> bool {
- self.0 & Self::IXGRP.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn write_group(&self) -> bool {
- self.0 & Self::IWGRP.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn read_group(&self) -> bool {
- self.0 & Self::IRGRP.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn exec_user(&self) -> bool {
- self.0 & Self::IXUSR.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn write_user(&self) -> bool {
- self.0 & Self::IWUSR.0 != 0
- }
- #[allow(unused)]
- pub(crate) fn read_user(&self) -> bool {
- self.0 & Self::IRUSR.0 != 0
- }
-
- pub(crate) fn perm(&self) -> u16 {
- self.0 & 0x0FFF
- }
-
- pub(crate) fn is_file(&self) -> bool {
- (self.0 & 0xF000) == Self::IFREG.0
- }
-
- pub(crate) fn is_dir(&self) -> bool {
- (self.0 & 0xF000) == Self::IFDIR.0
- }
-
- pub(crate) fn is_symlink(&self) -> bool {
- self.0 & 0xF000 == Self::IFLNK.0
- }
-
- pub(crate) fn validate(mode_value: u16) -> Option<Self> {
- let valid_flags: [u16; 7] = [0x1000, 0x2000, 0x4000, 0x6000, 0x8000, 0xA000, 0xC000];
- valid_flags
- .contains(&(mode_value & 0xF000))
- .then(|| Self(mode_value))
- }
-}
-
-impl From<InodeMode> for FileType {
- fn from(value: InodeMode) -> Self {
- let type_flag = value.0 & 0xF000;
- match type_flag {
- 0x1000 => FileType::NamedPipe,
- 0x2000 => FileType::CharDevice,
- 0x4000 => FileType::Directory,
- 0x6000 => FileType::BlockDevice,
- 0x8000 => FileType::RegularFile,
- 0xA000 => FileType::Symlink,
- 0xC000 => FileType::Socket,
- _ => panic!("Invalid inode mode {:x}", type_flag),
- }
- }
-}
-
-impl From<InodeMode> for u8 {
- fn from(value: InodeMode) -> Self {
- utils::from_filetype(value.into())
- }
-}
-
-/// Pretty much the same with ext2, with minor changes:
-/// - removed OS dependent attributes (osd1 & osd2)
-/// - removed i_faddr since fragmentation is not supported
-/// - changed uid and gid from u16 to u32
-/// - added more direct blocks for a total size of 128 bytes
-/// TODO: do we need to extend time precision?
-#[repr(C)]
-#[derive(Debug, Clone)]
-pub struct Inode {
- pub mode: InodeMode,
- pub uid: u32,
- pub size: u32,
- pub atime: u32, // access time, in seconds
- pub ctime: u32, // change time, in seconds
- pub mtime: u32, // modify time, in seconds
- pub crtime: u32, // create time, in seconds
- pub gid: u32,
- pub n_links: u16,
- pub n_blocks: u32,
- pub flags: u32, // TODO: do we actually need this? maybe just return 0
- pub direct: [u32; DIRECT_NUMBER],
- pub single_indirect: u32,
- pub double_indirect: u32,
- pub triple_indirect: u32,
- pub generation: u32,
- pub file_acl: u32,
- pub dir_acl: u32, // TODO do we have to implement ACL......?
-}
-
-impl Inode {
- fn new(
- mode: InodeMode,
- uid: u32,
- gid: u32,
- time: u32,
- flags: u32,
- generation: u32,
- file_acl: u32,
- dir_acl: u32,
- ) -> Self {
- Self {
- mode,
- uid,
- size: 0,
- atime: time,
- ctime: time,
- mtime: time,
- crtime: time,
- gid,
- n_links: 1,
- n_blocks: 0,
- flags,
- direct: [0; DIRECT_NUMBER],
- single_indirect: 0,
- double_indirect: 0,
- triple_indirect: 0,
- generation,
- file_acl,
- dir_acl,
- }
- }
-
- #[allow(unused)]
- pub fn make_inode(
- permissions: u16,
- mode: InodeMode,
- uid: u32,
- gid: u32,
- time: u32,
- flags: u32,
- generation: u32,
- file_acl: u32,
- dir_acl: u32,
- ) -> Self {
- Self::new(
- InodeMode(permissions) | mode,
- uid,
- gid,
- time,
- flags,
- generation,
- file_acl,
- dir_acl,
- )
- }
-
- pub fn directory(
- permissions: u16,
- uid: u32,
- gid: u32,
- time: u32,
- flags: u32,
- generation: u32,
- file_acl: u32,
- dir_acl: u32,
- ) -> Self {
- Self::new(
- InodeMode(permissions) | InodeMode::IFDIR,
- uid,
- gid,
- time,
- flags,
- generation,
- file_acl,
- dir_acl,
- )
- }
-
- pub fn file(
- permissions: u16,
- uid: u32,
- gid: u32,
- time: u32,
- flags: u32,
- generation: u32,
- file_acl: u32,
- dir_acl: u32,
- ) -> Self {
- Self::new(
- InodeMode(permissions) | InodeMode::IFREG,
- uid,
- gid,
- time,
- flags,
- generation,
- file_acl,
- dir_acl,
- )
- }
-
- pub fn symlink(
- permissions: u16,
- uid: u32,
- gid: u32,
- time: u32,
- flags: u32,
- generation: u32,
- file_acl: u32,
- dir_acl: u32,
- ) -> Self {
- Self::new(
- InodeMode(permissions) | InodeMode::IFLNK,
- uid,
- gid,
- time,
- flags,
- generation,
- file_acl,
- dir_acl,
- )
- }
-
- pub(crate) fn is_file(&self) -> bool {
- self.mode.is_file()
- }
-
- pub(crate) fn is_dir(&self) -> bool {
- self.mode.is_dir()
- }
-
- pub(crate) fn is_symlink(&self) -> bool {
- self.mode.is_symlink()
- }
-
- pub(crate) fn file_type(&self) -> FileType {
- self.mode.into()
- }
-
- pub fn empty() -> Self {
- Self {
- mode: InodeMode(0),
- uid: 0,
- size: 0,
- atime: 0,
- ctime: 0,
- mtime: 0,
- crtime: 0,
- gid: 0,
- n_links: 0,
- n_blocks: 0,
- flags: 0,
- direct: [0; 15],
- single_indirect: 0,
- double_indirect: 0,
- triple_indirect: 0,
- generation: 0,
- file_acl: 0,
- dir_acl: 0,
- }
- }
-}
-pub const INODE_SIZE: usize = std::mem::size_of::<Inode>();
generated by cgit v1.2.3-70-g09d2 (git 2.46.2) at 2024-10-16 20:59:02 +0000