From fd125947c9db0b33761414e65e919f73d9bf1815 Mon Sep 17 00:00:00 2001
From: Chuyan Zhang <me@zcy.moe>
Date: Thu, 30 Nov 2023 12:01:11 -0800
Subject: Refactor workspace

---
 ayafs/src/utils/permissions.rs | 62 ------------------------------------------
 1 file changed, 62 deletions(-)
 delete mode 100644 ayafs/src/utils/permissions.rs

(limited to 'ayafs/src/utils/permissions.rs')

diff --git a/ayafs/src/utils/permissions.rs b/ayafs/src/utils/permissions.rs
deleted file mode 100644
index 6773511..0000000
--- a/ayafs/src/utils/permissions.rs
+++ /dev/null
@@ -1,62 +0,0 @@
-use crate::disk::inode::InodeMode;
-use libc::{F_OK, S_ISGID, S_ISUID, S_IXGRP, X_OK};
-use std::fs::File;
-use std::io::BufRead;
-
-pub(crate) fn get_groups(pid: u32) -> Vec<u32> {
-    let file = File::open(format!("/proc/{pid}/task/{pid}/status"))
-        .expect(format!("pid {pid} incorrect!").as_str());
-    for line in std::io::BufReader::new(file).lines() {
-        let line = line.unwrap();
-        if line.starts_with("Groups:") {
-            return line["Groups: ".len()..]
-                .split(' ')
-                .filter(|x| !x.trim().is_empty())
-                .map(|x| x.parse::<u32>().unwrap())
-                .collect();
-        }
-    }
-
-    Vec::new()
-}
-
-pub(crate) fn clear_suid_sgid(mut mode: InodeMode) -> InodeMode {
-    mode.0 &= !S_ISUID as u16;
-    if mode.0 & S_IXGRP as u16 != 0 {
-        mode.0 &= !S_ISGID as u16;
-    }
-    mode
-}
-
-pub(crate) fn check_access(
-    incoming_uid: u32,
-    incoming_gid: u32,
-    uid: u32,
-    gid: u32,
-    mode: InodeMode,
-    mut mask: i32,
-) -> bool {
-    if mask == F_OK {
-        return true;
-    }
-
-    let perm = i32::from(mode.0);
-    // root
-    if incoming_uid == 0 {
-        // 读写任何东西都是可以的, 执行只有 IXOTH/IXGRP/IXUSR 之一设置才可以
-        mask &= X_OK;
-        mask -= mask & (perm >> 6);
-        mask -= mask & (perm >> 3);
-        mask -= mask & perm;
-        return mask == 0;
-    }
-
-    if incoming_uid == uid {
-        mask -= mask & (perm >> 6);
-    } else if incoming_gid == gid {
-        mask -= mask & (perm >> 3);
-    } else {
-        mask -= mask & perm;
-    }
-    mask == 0
-}
-- 
cgit v1.2.3-70-g09d2