From ce32c0684311923fb80dd04221d5fd5120170cf9 Mon Sep 17 00:00:00 2001
From: Zach Koopmans <zkoopmans@google.com>
Date: Mon, 2 Dec 2019 22:51:55 -0800
Subject: Import benchmark-tools to main repository.

This has adapted for use with bazel from the original commit
a26e93769ebefd82593a43e22fb13a09717cfa6d.

In particular, the style has been made consistent with internal python style
guidelines, and the packages (including the main entrypoint) have been
refactored in order to allow bazel testing targets.

PiperOrigin-RevId: 283484433
---
 benchmarks/tcp/nsjoin.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 benchmarks/tcp/nsjoin.c

(limited to 'benchmarks/tcp/nsjoin.c')

diff --git a/benchmarks/tcp/nsjoin.c b/benchmarks/tcp/nsjoin.c
new file mode 100644
index 000000000..524b4d549
--- /dev/null
+++ b/benchmarks/tcp/nsjoin.c
@@ -0,0 +1,47 @@
+// Copyright 2018 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main(int argc, char** argv) {
+  if (argc <= 2) {
+    fprintf(stderr, "error: must provide a namespace file.\n");
+    fprintf(stderr, "usage: %s <file> [arguments...]\n", argv[0]);
+    return 1;
+  }
+
+  int fd = open(argv[1], O_RDONLY);
+  if (fd < 0) {
+    fprintf(stderr, "error opening %s: %s\n", argv[1], strerror(errno));
+    return 1;
+  }
+  if (setns(fd, 0) < 0) {
+    fprintf(stderr, "error joining %s: %s\n", argv[1], strerror(errno));
+    return 1;
+  }
+
+  execvp(argv[2], &argv[2]);
+  return 1;
+}
-- 
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