introduce basic fact collection

client/vendor/github.com/zcalusic/sysinfo/kernel_linux.go

@@ -0,0 +1,33 @@
+// Copyright © 2016 Zlatko Čalušić
+//
+// Use of this source code is governed by an MIT-style license that can be found in the LICENSE file.
+
+//go:build linux
+// +build linux
+
+package sysinfo
+
+import (
+	"strings"
+	"syscall"
+	"unsafe"
+)
+
+// Kernel information.
+type Kernel struct {
+	Release      string `json:"release,omitempty"`
+	Version      string `json:"version,omitempty"`
+	Architecture string `json:"architecture,omitempty"`
+}
+
+func (si *SysInfo) getKernelInfo() {
+	si.Kernel.Release = slurpFile("/proc/sys/kernel/osrelease")
+	si.Kernel.Version = slurpFile("/proc/sys/kernel/version")
+
+	var uname syscall.Utsname
+	if err := syscall.Uname(&uname); err != nil {
+		return
+	}
+
+	si.Kernel.Architecture = strings.TrimRight(string((*[65]byte)(unsafe.Pointer(&uname.Machine))[:]), "\000")
+}