1 files changed, 37 insertions, 0 deletions
diff --git a/libc/src/unistd/linux/faccessat.cpp b/libc/src/unistd/linux/faccessat.cpp
new file mode 100644
index 0000000..7a2a29c
--- /dev/null
+++ b/libc/src/unistd/linux/faccessat.cpp
@@ -0,0 +1,37 @@
+//===-- Linux implementation of faccessat ---------------------------------===//
+//
+// 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/unistd/faccessat.h"
+
+#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
+#include "src/__support/common.h"
+
+#include "hdr/fcntl_macros.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include <sys/syscall.h> // For syscall numbers.
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, faccessat,
+                   (int fd, const char *path, int amode, int flag)) {
+#ifdef SYS_faccessat2
+  int ret =
+      LIBC_NAMESPACE::syscall_impl<int>(SYS_faccessat2, fd, path, amode, flag);
+#else
+#error "faccessat2 syscall is not available."
+#endif
+
+  if (ret < 0) {
+    libc_errno = -ret;
+    return -1;
+  }
+  return 0;
+}
+
+} // namespace LIBC_NAMESPACE_DECL