Upgrade rustix (tiann#1900)

Author: yujincheng08

userspace/ksud/Cargo.lock

@@ -11,7 +11,7 @@ use nom::{
     sequence::Tuple,
     IResult, Parser,
 };
-use std::{path::Path, vec};
+use std::{ffi, path::Path, vec};
 
 type SeObject<'a> = Vec<&'a str>;
 
@@ -660,19 +660,19 @@ impl<'a> TryFrom<&'a PolicyStatement<'a>> for Vec<AtomicStatement> {
 struct FfiPolicy {
     cmd: u32,
     subcmd: u32,
-    sepol1: *const libc::c_char,
-    sepol2: *const libc::c_char,
-    sepol3: *const libc::c_char,
-    sepol4: *const libc::c_char,
-    sepol5: *const libc::c_char,
-    sepol6: *const libc::c_char,
-    sepol7: *const libc::c_char,
+    sepol1: *const ffi::c_char,
+    sepol2: *const ffi::c_char,
+    sepol3: *const ffi::c_char,
+    sepol4: *const ffi::c_char,
+    sepol5: *const ffi::c_char,
+    sepol6: *const ffi::c_char,
+    sepol7: *const ffi::c_char,
 }
 
-fn to_c_ptr(pol: &PolicyObject) -> *const libc::c_char {
+fn to_c_ptr(pol: &PolicyObject) -> *const ffi::c_char {
     match pol {
         PolicyObject::None | PolicyObject::All => std::ptr::null(),
-        PolicyObject::One(s) => s.as_ptr().cast::<libc::c_char>(),
+        PolicyObject::One(s) => s.as_ptr().cast::<ffi::c_char>(),
     }
 }
 

userspace/ksud/src/sepolicy.rs

@@ -19,30 +19,16 @@ use rustix::{
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 pub fn grant_root(global_mnt: bool) -> Result<()> {
-    const KERNEL_SU_OPTION: u32 = 0xDEAD_BEEF;
-    const CMD_GRANT_ROOT: u64 = 0;
-
-    let mut result: u32 = 0;
-    unsafe {
-        #[allow(clippy::cast_possible_wrap)]
-        libc::prctl(
-            KERNEL_SU_OPTION as i32, // supposed to overflow
-            CMD_GRANT_ROOT,
-            0,
-            0,
-            std::ptr::addr_of_mut!(result).cast::<libc::c_void>(),
-        );
-    }
+    rustix::process::ksu_grant_root()?;
 
-    anyhow::ensure!(result == KERNEL_SU_OPTION, "grant root failed");
-    let mut command = std::process::Command::new("sh");
+    let mut command = Command::new("sh");
     let command = unsafe {
         command.pre_exec(move || {
             if global_mnt {
                 let _ = utils::switch_mnt_ns(1);
                 let _ = utils::unshare_mnt_ns();
             }
-            std::result::Result::Ok(())
+            Result::Ok(())
         })
     };
     // add /data/adb/ksu/bin to PATH
@@ -64,7 +50,7 @@ fn print_usage(program: &str, opts: Options) {
 fn set_identity(uid: u32, gid: u32, groups: &[u32]) {
     #[cfg(any(target_os = "linux", target_os = "android"))]
     {
-        rustix::process::set_groups(
+        rustix::thread::set_thread_groups(
             groups
                 .iter()
                 .map(|g| unsafe { Gid::from_raw(*g) })
@@ -89,7 +75,7 @@ pub fn root_shell() -> Result<()> {
     // we are root now, this was set in kernel!
 
     use anyhow::anyhow;
-    let env_args: Vec<String> = std::env::args().collect();
+    let env_args: Vec<String> = env::args().collect();
     let program = env_args[0].clone();
     let args = env_args
         .iter()
@@ -154,7 +140,7 @@ pub fn root_shell() -> Result<()> {
         .collect::<Vec<String>>();
 
     let matches = match opts.parse(&args[1..]) {
-        std::result::Result::Ok(m) => m,
+        Result::Ok(m) => m,
         Err(f) => {
             println!("{f}");
             print_usage(&program, opts);
@@ -282,7 +268,7 @@ pub fn root_shell() -> Result<()> {
 
             set_identity(uid, gid, &groups);
 
-            std::result::Result::Ok(())
+            Result::Ok(())
         })
     };