From 8c387c58de04815652d9e991438fb0856ad6c573 Mon Sep 17 00:00:00 2001
From: Nahor <nahor.j+github@gmail.com>
Date: Tue, 7 Oct 2025 10:51:49 -0700
Subject: [PATCH] Fix build for MSYS2 (missing ulimits)

Part of #11907
---
 src/builtins/ulimit.rs | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/builtins/ulimit.rs b/src/builtins/ulimit.rs
index fec376343..c1a9b4b46 100644
--- a/src/builtins/ulimit.rs
+++ b/src/builtins/ulimit.rs
@@ -19,11 +19,23 @@ pub mod common {
         pub const CORE: libc::c_int = libc::RLIMIT_CORE as _;
         pub const DATA: libc::c_int = libc::RLIMIT_DATA as _;
         pub const FSIZE: libc::c_int = libc::RLIMIT_FSIZE as _;
-        pub const MEMLOCK: libc::c_int = libc::RLIMIT_MEMLOCK as _;
+        cfg_if!(
+            if #[cfg(cygwin)] {
+                pub const MEMLOCK: libc::c_int = -1;
+            } else {
+                pub const MEMLOCK: libc::c_int = libc::RLIMIT_MEMLOCK as _;
+            }
+        );
         pub const NOFILE: libc::c_int = libc::RLIMIT_NOFILE as _;
         pub const STACK: libc::c_int = libc::RLIMIT_STACK as _;
         pub const CPU: libc::c_int = libc::RLIMIT_CPU as _;
-        pub const NPROC: libc::c_int = libc::RLIMIT_NPROC as _;
+        cfg_if!(
+            if #[cfg(cygwin)] {
+                pub const NPROC: libc::c_int = -1;
+            } else {
+                pub const NPROC: libc::c_int = libc::RLIMIT_NPROC as _;
+            }
+        );
         cfg_if!(
             if #[cfg(target_os = "openbsd")] {
                 pub const AS: libc::c_int = -1;
@@ -113,6 +125,26 @@ pub mod bsd {
     }
     #[cfg(bsd)]
     pub use self::bsd::*;
+
+    #[cfg(cygwin)]
+    pub mod cygwin {
+        use libc;
+
+        pub const SIGPENDING: libc::c_int = -1;
+        pub const MSGQUEUE: libc::c_int = -1;
+        pub const RTPRIO: libc::c_int = -1;
+        pub const RTTIME: libc::c_int = -1;
+        pub const RSS: libc::c_int = -1;
+
+        pub const SBSIZE: libc::c_int = -1;
+        pub const NICE: libc::c_int = -1;
+        pub const SWAP: libc::c_int = -1;
+        pub const KQUEUES: libc::c_int = -1;
+        pub const NPTS: libc::c_int = -1;
+        pub const NTHR: libc::c_int = -1;
+    }
+    #[cfg(cygwin)]
+    pub use self::cygwin::*;
 }
 
 /// Calls getrlimit.