cp: Use FICLONE ioctl constant from linux-raw-sys

The current ioctl operation code for FICLONE is fully open-coded instead
of using the ioctl macros, which makes it non-portable to other
architectures including mips, arm & powerpc. Get the constant from the
linux-raw-sys crate instead, which is already a transitive dependency.

Author: dezgeg

Cargo.lock

@@ -303,6 +303,7 @@ iana-time-zone = "0.1.57"
 indicatif = "0.17.8"
 itertools = "0.14.0"
 libc = "0.2.153"
+linux-raw-sys = "0.9"
 lscolors = { version = "0.20.0", default-features = false, features = [
   "gnu_legacy",
 ] }

Cargo.toml

@@ -24,6 +24,7 @@ path = "src/cp.rs"
 clap = { workspace = true }
 filetime = { workspace = true }
 libc = { workspace = true }
+linux-raw-sys = { workspace = true }
 quick-error = { workspace = true }
 selinux = { workspace = true, optional = true }
 uucore = { workspace = true, features = [

src/uu/cp/Cargo.toml

@@ -20,15 +20,6 @@ use uucore::mode::get_umask;
 
 use crate::{CopyDebug, CopyResult, OffloadReflinkDebug, ReflinkMode, SparseDebug, SparseMode};
 
-// From /usr/include/linux/fs.h:
-// #define FICLONE		_IOW(0x94, 9, int)
-// Use a macro as libc::ioctl expects u32 or u64 depending on the arch
-macro_rules! FICLONE {
-    () => {
-        0x40049409
-    };
-}
-
 /// The fallback behavior for [`clone`] on failed system call.
 #[derive(Clone, Copy)]
 enum CloneFallback {
@@ -70,7 +61,15 @@ where
     let dst_file = File::create(&dest)?;
     let src_fd = src_file.as_raw_fd();
     let dst_fd = dst_file.as_raw_fd();
-    let result = unsafe { libc::ioctl(dst_fd, FICLONE!(), src_fd) };
+    // Using .try_into().unwrap() is required as glibc, musl & android all have different type for ioctl()
+    #[allow(clippy::unnecessary_fallible_conversions)]
+    let result = unsafe {
+        libc::ioctl(
+            dst_fd,
+            linux_raw_sys::ioctl::FICLONE.try_into().unwrap(),
+            src_fd,
+        )
+    };
     if result == 0 {
         return Ok(());
     }