misc(lint): unused variables and imports

Signed-off-by: Anhad Singh <andypython@protonmail.com>

src/ld_so/dso.rs

@@ -4,8 +4,8 @@ use super::{
     tcb::Master,
 };
 use crate::{
-    header::{errno::STR_ERROR, sys_mman},
-    platform::{types::c_void, Pal, Sys, ERRNO},
+    header::sys_mman,
+    platform::{types::c_void, Pal, Sys},
 };
 use alloc::{
     collections::BTreeMap,

src/ld_so/linker.rs

@@ -31,7 +31,7 @@ use super::{
     debug::{RTLDState, _dl_debug_state, _r_debug},
     dso::{is_pie_enabled, DSO},
     tcb::{Master, Tcb},
-    ExpectTlsFree, PATH_SEP,
+    PATH_SEP,
 };
 
 /// Same as [`crate::fs::File`], but does not touch [`crate::platform::ERRNO`] as the dynamic

src/ld_so/start.rs

@@ -12,7 +12,6 @@ use generic_rt::ExpectTlsFree;
 use crate::{
     c_str::CStr,
     header::unistd,
-    ld_so::tcb::Master,
     platform::{get_auxv, get_auxvs, types::c_char},
     start::Stack,
     sync::mutex::Mutex,
@@ -207,12 +206,7 @@ pub extern "C" fn relibc_ld_so_start(
     }
 
     // TODO: Fix memory leak, although minimal.
-    unsafe {
-        crate::platform::init(auxv.clone());
-    }
-
-    // Some variables that will be overridden by environment and auxiliary vectors
-    let ld_library_path = envs.get("LD_LIBRARY_PATH").map(|s| s.to_owned());
+    crate::platform::init(auxv.clone());
 
     let name_or_path = if is_manual {
         // ld.so is run directly by user and not via execve() or similar systemcall

src/ld_so/tcb.rs

@@ -1,6 +1,5 @@
 use alloc::vec::Vec;
 use core::{
-    arch::asm,
     cell::UnsafeCell,
     mem,
     ops::{Deref, DerefMut},
@@ -10,7 +9,6 @@ use core::{
 use generic_rt::GenericTcb;
 use goblin::error::{Error, Result};
 
-use super::ExpectTlsFree;
 use crate::{
     header::sys_mman,
     ld_so::linker::Linker,
@@ -80,7 +78,7 @@ impl Tcb {
     /// `size` is the size of the TLS in bytes.
     pub unsafe fn new(size: usize) -> Result<&'static mut Self> {
         let page_size = Sys::getpagesize();
-        let (abi_page, tls, tcb_page) = Self::os_new(size.next_multiple_of(page_size))?;
+        let (_abi_page, tls, tcb_page) = Self::os_new(size.next_multiple_of(page_size))?;
 
         let tcb_ptr = tcb_page.as_mut_ptr() as *mut Self;
         trace!("New TCB: {:p}", tcb_ptr);
@@ -212,8 +210,8 @@ impl Tcb {
 
     pub fn setup_dtv(&mut self, n: usize) {
         if self.dtv_ptr.is_null() {
-            let mut dtv = vec![ptr::null_mut(); n];
-            let (ptr, len, cap) = dtv.into_raw_parts();
+            let dtv = vec![ptr::null_mut(); n];
+            let (ptr, len, _) = dtv.into_raw_parts();
 
             self.dtv_ptr = ptr;
             self.dtv_len = len;
@@ -269,7 +267,7 @@ impl Tcb {
 
     /// OS and architecture specific code to activate TLS - Linux x86_64
     #[cfg(all(target_os = "linux", target_arch = "x86_64"))]
-    unsafe fn os_arch_activate(os: &(), tls_end: usize, _tls_len: usize) {
+    unsafe fn os_arch_activate(_os: &(), tls_end: usize, _tls_len: usize) {
         const ARCH_SET_FS: usize = 0x1002;
         syscall!(ARCH_PRCTL, ARCH_SET_FS, tls_end);
     }