From f0422d50255641c0caec48556e65e1e9b82994b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafael=20=C3=81vila=20de=20Esp=C3=ADndola?=
 <rafael@espindo.la>
Date: Fri, 24 May 2024 15:17:34 +0000
Subject: [PATCH] Add iopl/ioperm to musl x86_64

Note that I think this is available on more than x86_64, but that is
all that I have to test. This also matches what was done for glibc
systems.

(backport <https://github.com/rust-lang/libc/pull/3720>)
(cherry picked from commit 083499ae1ea8e9a8cc91515ec08f9e5746378a9f)
---
 libc-test/semver/linux-i686.txt                 |  2 ++
 libc-test/semver/linux-x86_64.txt               |  2 ++
 src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs |  2 --
 src/unix/linux_like/linux/mod.rs                | 10 ++++++++++
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/libc-test/semver/linux-i686.txt b/libc-test/semver/linux-i686.txt
index 2f40472dcfaeb..73d4ca3554321 100644
--- a/libc-test/semver/linux-i686.txt
+++ b/libc-test/semver/linux-i686.txt
@@ -214,6 +214,8 @@ fsblkcnt64_t
 fsfilcnt64_t
 getcontext
 greg_t
+ioperm
+iopl
 makecontext
 max_align_t
 mcontext_t
diff --git a/libc-test/semver/linux-x86_64.txt b/libc-test/semver/linux-x86_64.txt
index c8a509c215085..a26f63d6d5a6c 100644
--- a/libc-test/semver/linux-x86_64.txt
+++ b/libc-test/semver/linux-x86_64.txt
@@ -139,6 +139,8 @@ TIOCGRS485
 TIOCSBRK
 TIOCSRS485
 greg_t
+ioperm
+iopl
 max_align_t
 mcontext_t
 ucontext_t
diff --git a/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
index 609c74429c5bc..f66eb0409c596 100644
--- a/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
@@ -802,8 +802,6 @@ extern "C" {
     pub fn setcontext(ucp: *const ucontext_t) -> ::c_int;
     pub fn makecontext(ucp: *mut ucontext_t, func: extern "C" fn(), argc: ::c_int, ...);
     pub fn swapcontext(uocp: *mut ucontext_t, ucp: *const ucontext_t) -> ::c_int;
-    pub fn iopl(level: ::c_int) -> ::c_int;
-    pub fn ioperm(from: ::c_ulong, num: ::c_ulong, turn_on: ::c_int) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 3ca4446e66ef1..7df3a953c293b 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -1556,6 +1556,16 @@ cfg_if! {
     }
 }
 
+cfg_if! {
+    if #[cfg(all(any(target_env = "gnu", target_env = "musl", target_env = "ohos"),
+                 any(target_arch = "x86_64", target_arch = "x86")))] {
+        extern "C" {
+            pub fn iopl(level: ::c_int) -> ::c_int;
+            pub fn ioperm(from: ::c_ulong, num: ::c_ulong, turn_on: ::c_int) -> ::c_int;
+        }
+    }
+}
+
 cfg_if! {
     if #[cfg(any(target_env = "gnu", target_env = "musl", target_env = "ohos"))] {
         pub const ABDAY_1: ::nl_item = 0x20000;