From b4592091881e91d9f1fc62564b7842c89044f1df Mon Sep 17 00:00:00 2001
From: Samuel Karp <me@samuelkarp.com>
Date: Sun, 1 Nov 2020 19:12:33 -0800
Subject: [PATCH] Compile for FreeBSD

Signed-off-by: Samuel Karp <me@samuelkarp.com>
---
 archive/tar_freebsd.go              | 36 +++++++++++++++++++++++++++++
 archive/tar_mostunix.go             | 36 +++++++++++++++++++++++++++++
 archive/tar_unix.go                 |  7 ++----
 cmd/containerd-shim/shim_freebsd.go |  5 ++--
 4 files changed, 77 insertions(+), 7 deletions(-)
 create mode 100644 archive/tar_freebsd.go
 create mode 100644 archive/tar_mostunix.go

diff --git a/archive/tar_freebsd.go b/archive/tar_freebsd.go
new file mode 100644
index 000000000..d26bb2734
--- /dev/null
+++ b/archive/tar_freebsd.go
@@ -0,0 +1,36 @@
+// +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 archive
+
+import "golang.org/x/sys/unix"
+
+// mknod wraps unix.Mknod.  FreeBSD's unix.Mknod signature is different from
+// other Unix and Unix-like operating systems.
+func mknod(path string, mode uint32, dev uint64) error {
+	return unix.Mknod(path, mode, dev)
+}
+
+// lsetxattrCreate wraps unix.Lsetxattr with FreeBSD-specific flags and errors
+func lsetxattrCreate(link string, attr string, data []byte) error {
+	err := unix.Lsetxattr(link, attr, data, 0)
+	if err == unix.ENOTSUP|| err == unix.EEXIST {
+		return nil
+	}
+	return err
+}
diff --git a/archive/tar_mostunix.go b/archive/tar_mostunix.go
new file mode 100644
index 000000000..bd3f98a4a
--- /dev/null
+++ b/archive/tar_mostunix.go
@@ -0,0 +1,36 @@
+// +build !windows,!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 archive
+
+import "golang.org/x/sys/unix"
+
+// mknod wraps Unix.Mknod and casts dev to int
+func mknod(path string, mode uint32, dev uint64) error {
+	return unix.Mknod(path, mode, int(dev))
+}
+
+// lsetxattrCreate wraps unix.Lsetxattr, passes the unix.XATTR_CREATE flag on
+// supported operating systems,and ignores appropriate errors
+func lsetxattrCreate(link string, attr string, data []byte) error {
+	err := unix.Lsetxattr(link, attr, data, unix.XATTR_CREATE)
+	if err == unix.ENOTSUP || err == unix.ENODATA || err == unix.EEXIST {
+		return nil
+	}
+	return err
+}
diff --git a/archive/tar_unix.go b/archive/tar_unix.go
index 6e89d2fdb..a187db800 100644
--- a/archive/tar_unix.go
+++ b/archive/tar_unix.go
@@ -108,7 +108,7 @@ func handleTarTypeBlockCharFifo(hdr *tar.Header, path string) error {
 		mode |= unix.S_IFIFO
 	}
 
-	return unix.Mknod(path, mode, int(unix.Mkdev(uint32(hdr.Devmajor), uint32(hdr.Devminor))))
+	return mknod(path, mode, unix.Mkdev(uint32(hdr.Devmajor), uint32(hdr.Devminor)))
 }
 
 func handleLChmod(hdr *tar.Header, path string, hdrInfo os.FileInfo) error {
@@ -196,10 +196,7 @@ func copyUpXAttrs(dst, src string) error {
 			}
 			return errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src)
 		}
-		if err := unix.Lsetxattr(dst, xattr, data, unix.XATTR_CREATE); err != nil {
-			if err == unix.ENOTSUP || err == unix.ENODATA || err == unix.EEXIST {
-				continue
-			}
+		if err := lsetxattrCreate(dst, xattr, data); err != nil {
 			return errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst)
 		}
 	}
diff --git a/cmd/containerd-shim/shim_freebsd.go b/cmd/containerd-shim/shim_freebsd.go
index 92988aa26..1fd88546a 100644
--- a/cmd/containerd-shim/shim_freebsd.go
+++ b/cmd/containerd-shim/shim_freebsd.go
@@ -22,7 +22,8 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/containerd/containerd/runtime/v1/shim"
+	"github.com/containerd/containerd/sys/reaper"
+
 	runc "github.com/containerd/go-runc"
 	"github.com/containerd/ttrpc"
 )
@@ -34,7 +35,7 @@ func setupSignals() (chan os.Signal, error) {
 	signal.Notify(signals)
 	// make sure runc is setup to use the monitor
 	// for waiting on processes
-	runc.Monitor = shim.Default
+	runc.Monitor = reaper.Default
 	return signals, nil
 }