Bump version

Fixes #19

CHANGELOG.md

@@ -4,6 +4,12 @@
 
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.1] 2019-12-25
+
+### Fixed
+
+- macOS support.
+
 ## [1.2.0] 2019-11-15
 
 ### Added

kernel.go

@@ -15,6 +15,7 @@ import (
 	"os/exec"
 	"os/user"
 	"regexp"
+	"runtime"
 	"strings"
 	"time"
 
@@ -99,6 +100,14 @@ func dockerImagePath(sk config.KernelMask) (path string, err error) {
 }
 
 func vsyscallAvailable() (available bool, err error) {
+	if runtime.GOOS != "linux" {
+		// Docker for non-Linux systems is not using the host
+		// kernel but uses kernel inside a virtual machine, so
+		// it builds by the Docker team with vsyscall support.
+		available = true
+		return
+	}
+
 	buf, err := ioutil.ReadFile("/proc/self/maps")
 	if err != nil {
 		return

main.go

@@ -84,7 +84,7 @@ func main() {
 	)
 
 	app.Author("Mikhail Klementev <root@dumpstack.io>")
-	app.Version("1.1.2")
+	app.Version("1.2.1")
 
 	pathFlag := app.Flag("path", "Path to work directory")
 	path := pathFlag.Default(".").ExistingDir()