Clarification of st_mode bits extraction code.

src/header/pthread/tls.rs

@@ -3,7 +3,10 @@ use super::*;
 // TODO: Hashmap?
 use alloc::collections::BTreeMap;
 
-use core::{cell::{Cell, RefCell}, sync::atomic::{AtomicUsize, Ordering}};
+use core::{
+    cell::{Cell, RefCell},
+    sync::atomic::{AtomicUsize, Ordering},
+};
 
 use crate::{header::errno::EINVAL, sync::Mutex};
 

src/platform/redox/mod.rs

@@ -116,13 +116,13 @@ impl Pal for Sys {
 
         let Resugid { ruid, rgid, .. } = redox_rt::sys::posix_getresugid();
 
-        let perms = if stat.st_uid == ruid {
-            stat.st_mode >> (3 * 2 & 0o7)
+        let perms = (if stat.st_uid == ruid {
+            stat.st_mode >> (3 * 2)
         } else if stat.st_gid == rgid {
-            stat.st_mode >> (3 * 1 & 0o7)
+            stat.st_mode >> (3 * 1)
         } else {
-            stat.st_mode & 0o7
-        };
+            stat.st_mode
+        }) & 0o7;
         if (mode & R_OK == R_OK && perms & 0o4 != 0o4)
             || (mode & W_OK == W_OK && perms & 0o2 != 0o2)
             || (mode & X_OK == X_OK && perms & 0o1 != 0o1)