From c6161f7108fd80a0caade8b654014d628f359b05 Mon Sep 17 00:00:00 2001
From: Amin Alaee <mohammadamin.alaee@gmail.com>
Date: Thu, 28 Sep 2023 13:36:25 +0200
Subject: [PATCH] Limit `os.sendfile` arguments based on platform (#10790)

---
 stdlib/os/__init__.pyi                    | 26 ++++++++++++-----------
 tests/stubtest_allowlists/linux-py310.txt |  1 -
 tests/stubtest_allowlists/linux-py311.txt |  1 -
 tests/stubtest_allowlists/linux-py312.txt |  1 -
 tests/stubtest_allowlists/linux-py39.txt  |  1 -
 5 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/stdlib/os/__init__.pyi b/stdlib/os/__init__.pyi
index 3d5dc3d15..5938901b6 100644
--- a/stdlib/os/__init__.pyi
+++ b/stdlib/os/__init__.pyi
@@ -657,18 +657,20 @@ if sys.platform != "win32":
         RWF_SYNC: int
         RWF_HIPRI: int
         RWF_NOWAIT: int
-    @overload
-    def sendfile(out_fd: int, in_fd: int, offset: int | None, count: int) -> int: ...
-    @overload
-    def sendfile(
-        out_fd: int,
-        in_fd: int,
-        offset: int,
-        count: int,
-        headers: Sequence[ReadableBuffer] = ...,
-        trailers: Sequence[ReadableBuffer] = ...,
-        flags: int = 0,
-    ) -> int: ...  # FreeBSD and Mac OS X only
+
+    if sys.platform == "linux":
+        def sendfile(out_fd: FileDescriptor, in_fd: FileDescriptor, offset: int | None, count: int) -> int: ...
+    else:
+        def sendfile(
+            out_fd: FileDescriptor,
+            in_fd: FileDescriptor,
+            offset: int,
+            count: int,
+            headers: Sequence[ReadableBuffer] = ...,
+            trailers: Sequence[ReadableBuffer] = ...,
+            flags: int = 0,
+        ) -> int: ...  # FreeBSD and Mac OS X only
+
     def readv(__fd: int, __buffers: SupportsLenAndGetItem[WriteableBuffer]) -> int: ...
     def writev(__fd: int, __buffers: SupportsLenAndGetItem[ReadableBuffer]) -> int: ...
 
diff --git a/tests/stubtest_allowlists/linux-py310.txt b/tests/stubtest_allowlists/linux-py310.txt
index 77992cc8b..1e973da0b 100644
--- a/tests/stubtest_allowlists/linux-py310.txt
+++ b/tests/stubtest_allowlists/linux-py310.txt
@@ -1,5 +1,4 @@
 _?curses.color_pair
-(os|posix).sendfile
 signal.sigtimedwait
 signal.sigwaitinfo
 
diff --git a/tests/stubtest_allowlists/linux-py311.txt b/tests/stubtest_allowlists/linux-py311.txt
index 7ef0ad0a6..97aec2409 100644
--- a/tests/stubtest_allowlists/linux-py311.txt
+++ b/tests/stubtest_allowlists/linux-py311.txt
@@ -1,5 +1,4 @@
 _?curses.color_pair
-(os|posix).sendfile
 signal.sigtimedwait
 signal.sigwaitinfo
 xxlimited.Xxo.x_exports
diff --git a/tests/stubtest_allowlists/linux-py312.txt b/tests/stubtest_allowlists/linux-py312.txt
index 05f78a9db..9423e9413 100644
--- a/tests/stubtest_allowlists/linux-py312.txt
+++ b/tests/stubtest_allowlists/linux-py312.txt
@@ -1,6 +1,5 @@
 _?curses.color_pair
 _posixsubprocess.fork_exec
-(os|posix).sendfile
 (os|posix).setns
 resource.prlimit
 signal.sigtimedwait
diff --git a/tests/stubtest_allowlists/linux-py39.txt b/tests/stubtest_allowlists/linux-py39.txt
index 0002c91df..b81a540ec 100644
--- a/tests/stubtest_allowlists/linux-py39.txt
+++ b/tests/stubtest_allowlists/linux-py39.txt
@@ -1,4 +1,3 @@
-(os|posix).sendfile
 select.epoll.register
 
 # ==========