libcontainer: drop FreeBSD support

runc is not supported on FreeBSD, so remove all FreeBSD specific bits.

As suggested by @crosbymichael in #1653

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

libcontainer/configs/cgroup_unsupported.go

@@ -1,4 +1,4 @@
-// +build !windows,!linux,!freebsd
+// +build !windows,!linux
 
 package configs
 

libcontainer/configs/device_defaults.go

@@ -1,4 +1,4 @@
-// +build linux freebsd
+// +build linux
 
 package configs
 

libcontainer/devices/devices_test.go

@@ -1,4 +1,4 @@
-// +build linux freebsd
+// +build linux
 
 package devices
 

libcontainer/mount/mount_freebsd.go

@@ -1,41 +0,0 @@
-package mount
-
-/*
-#include <sys/param.h>
-#include <sys/ucred.h>
-#include <sys/mount.h>
-*/
-import "C"
-
-import (
-	"fmt"
-	"reflect"
-	"unsafe"
-)
-
-// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
-// bind mounts.
-func parseMountTable() ([]*Info, error) {
-	var rawEntries *C.struct_statfs
-
-	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
-	if count == 0 {
-		return nil, fmt.Errorf("Failed to call getmntinfo")
-	}
-
-	var entries []C.struct_statfs
-	header := (*reflect.SliceHeader)(unsafe.Pointer(&entries))
-	header.Cap = count
-	header.Len = count
-	header.Data = uintptr(unsafe.Pointer(rawEntries))
-
-	var out []*Info
-	for _, entry := range entries {
-		var mountinfo Info
-		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
-		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
-		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
-		out = append(out, &mountinfo)
-	}
-	return out, nil
-}

libcontainer/mount/mount_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux,!freebsd freebsd,!cgo
+// +build !linux
 
 package mount
 

libcontainer/stats_freebsd.go

@@ -1,5 +0,0 @@
-package libcontainer
-
-type Stats struct {
-	Interfaces []*NetworkInterface
-}

libcontainer/system/sysconfig.go

@@ -1,4 +1,4 @@
-// +build cgo,linux cgo,freebsd
+// +build cgo,linux
 
 package system