You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: exec_utils.rs
    path of file: ./repos/mirrord/mirrord/layer/src
    
    the code of the file until where you have to start completion: #![cfg(target_os = "macos")]

use std::{
    env,
    ffi::{c_void, CString},
    marker::PhantomData,
    path::PathBuf,
    ptr,
    sync::OnceLock,
};

use libc::{c_char, c_int, pid_t};
use mirrord_layer_macro::{hook_fn, hook_guard_fn};
use mirrord_sip::{
    sip_patch, SipError, MIRRORD_TEMP_BIN_DIR_CANONIC_STRING, MIRRORD_TEMP_BIN_DIR_STRING,
};
use null_terminated::Nul;
use tracing::{trace, warn};

use crate::{
    common::{strip_mirrord_path, CheckedInto},
    detour::{
        Bypass::{
            ExecOnNonExistingFile, FileOperationInMirrordBinTempDir, NoSipDetected, TooManyArgs,
        },
        Detour,
        Detour::{Bypass,
    
pub(super) fn patch_if_sip(path: &str) -> Detour<String> {
    let patch_binaries = PATCH_BINARIES.get().expect("patch binaries not set");
    match sip_patch(path, patch_binaries) {
        Ok(None) => Bypass(NoSipDetected(path.to_string())),
        Ok(Some(new_path)) => Success(new_path),
        Err(SipError::FileNotFound(non_existing_bin)) => {
            trace!(
                "The application wants to execute {}, SIP check got FileNotFound for {}. \
                If the file actually exists and should have been found, make sure it is excluded \
                from FS ops.",
                path,
                non_existing_bin
            );
            Bypass(ExecOnNonExistingFile(non_existing_bin))
        }
        Err(sip_error) => {
            warn!(
                "The application is trying to execute the program {} which mirrord tried to check \
                for SIP and patch if necessary. However the SIP patch failed with the error: {:?}, \
                so mirrord did not load into it, and all operations in that program will be \
                executed locally if its execution without mirrord indeed succeeds.",
                path, sip_error
            );
            Error(HookError::FailedSipPatch(sip_error))
        }
    }
}