[libc-commits] [libc] [libc] Add `shm_open/shm_unlink` (PR #84974)

[Nick Desaulniers via libc-commits]

================
@@ -0,0 +1,26 @@
+//===---------- Linux implementation of the shm_open function -------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/sys/mman/shm_open.h"
+#include "llvm-libc-macros/fcntl-macros.h"
+#include "src/fcntl/open.h"
+#include "src/sys/mman/linux/shm_common.h"
+
+namespace LIBC_NAMESPACE {
+
+static constexpr int DEFAULT_OFLAGS = O_NOFOLLOW | O_CLOEXEC | O_NONBLOCK;
+
+LLVM_LIBC_FUNCTION(int, shm_open, (const char *name, int oflags, mode_t mode)) {
+
+  if (cpp::optional<shm_common::SHMPath> buffer =
+          shm_common::translate_name(name))
----------------
nickdesaulniers wrote:

If you add a `using namespace shm_common;` in this function, you can probably get this condition to fit on one line.

https://github.com/llvm/llvm-project/pull/84974