From 8be05eb237a026d797deba448eef3cf54b8fce7e Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin@specialbusservice.com>
Date: Sun, 16 Dec 2018 14:27:42 +0000
Subject: [PATCH] Fix freebsd build

This brings freebsd in line with Darwin, ie it builds, but some parts may not yet
be fully functional. There is now a WIP `runc` port for FreeBSD at
https://github.com/clovertrail/runc/tree/1501-SupportOnFreeBSD so should be able
to test further.

Signed-off-by: Justin Cormack <justin@specialbusservice.com>
---
 .../{shim_unix.go => shim_freebsd.go}         |  7 +++-
 cmd/containerd-stress/rlimit_freebsd.go       | 40 +++++++++++++++++++
 cmd/containerd-stress/rlimit_unix.go          |  2 +-
 runtime/v2/shim/shim_freebsd.go               | 29 ++++++++++++++
 4 files changed, 75 insertions(+), 3 deletions(-)
 rename cmd/containerd-shim/{shim_unix.go => shim_freebsd.go} (82%)
 create mode 100644 cmd/containerd-stress/rlimit_freebsd.go
 create mode 100644 runtime/v2/shim/shim_freebsd.go

diff --git a/cmd/containerd-shim/shim_unix.go b/cmd/containerd-shim/shim_freebsd.go
similarity index 82%
rename from cmd/containerd-shim/shim_unix.go
rename to cmd/containerd-shim/shim_freebsd.go
index 88cd5387c..92988aa26 100644
--- a/cmd/containerd-shim/shim_unix.go
+++ b/cmd/containerd-shim/shim_freebsd.go
@@ -1,4 +1,4 @@
-// +build !linux,!windows,!darwin
+// +build freebsd
 
 /*
    Copyright The containerd Authors.
@@ -39,5 +39,8 @@ func setupSignals() (chan os.Signal, error) {
 }
 
 func newServer() (*ttrpc.Server, error) {
-	return ttrpc.NewServer(ttrpc.WithServerHandshaker(ttrpc.UnixSocketRequireSameUser()))
+	// for freebsd, we omit the socket credentials because these syscalls are
+	// slightly different. since we don't have freebsd support yet, this can be
+	// implemented later and the build can continue without issue.
+	return ttrpc.NewServer()
 }
diff --git a/cmd/containerd-stress/rlimit_freebsd.go b/cmd/containerd-stress/rlimit_freebsd.go
new file mode 100644
index 000000000..a1b39defc
--- /dev/null
+++ b/cmd/containerd-stress/rlimit_freebsd.go
@@ -0,0 +1,40 @@
+// +build freebsd
+
+/*
+   Copyright The containerd 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.
+*/
+
+package main
+
+import (
+	"syscall"
+)
+
+func setRlimit() error {
+	rlimit := int64(100000)
+	if rlimit > 0 {
+		var limit syscall.Rlimit
+		if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
+			return err
+		}
+		if limit.Cur < rlimit {
+			limit.Cur = rlimit
+			if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
diff --git a/cmd/containerd-stress/rlimit_unix.go b/cmd/containerd-stress/rlimit_unix.go
index bca9df65a..807a9a92f 100644
--- a/cmd/containerd-stress/rlimit_unix.go
+++ b/cmd/containerd-stress/rlimit_unix.go
@@ -1,4 +1,4 @@
-// +build !windows
+// +build !windows,!freebsd
 
 /*
    Copyright The containerd Authors.
diff --git a/runtime/v2/shim/shim_freebsd.go b/runtime/v2/shim/shim_freebsd.go
new file mode 100644
index 000000000..4bc636280
--- /dev/null
+++ b/runtime/v2/shim/shim_freebsd.go
@@ -0,0 +1,29 @@
+// +build freebsd
+
+/*
+   Copyright The containerd 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.
+*/
+
+package shim
+
+import "github.com/containerd/ttrpc"
+
+func newServer() (*ttrpc.Server, error) {
+	return ttrpc.NewServer()
+}
+
+func subreaper() error {
+	return nil
+}