add uname functionality, kinda

pkg/uname/uname.go

@@ -0,0 +1,56 @@
+package uname
+
+import "syscall"
+
+type Uname struct {
+	Sysname    string
+	Nodename   string
+	Hostname   string
+	Release    string
+	Kernel     string
+	Version    string
+	Machine    string
+	Arch       string
+	Domainname string
+}
+
+// A utility to convert int8 values to proper strings.
+func int8ToStr(arr []int8) string {
+	b := make([]byte, 0, len(arr))
+	for _, v := range arr {
+		if v == 0x00 {
+			break
+		}
+		b = append(b, byte(v))
+	}
+	return string(b)
+}
+
+func New() *Uname {
+	var system syscall.Utsname
+	uname := &Uname{}
+	if err := syscall.Uname(&system); err == nil {
+		// extract members:
+		// type Utsname struct {
+		//  Sysname    [65]int8
+		//  Nodename   [65]int8
+		//  Release    [65]int8
+		//  Version    [65]int8
+		//  Machine    [65]int8
+		//  Domainname [65]int8
+		// }
+
+		// Add to the uname struct for humans
+		uname.Sysname = int8ToStr(system.Sysname[:])
+		uname.Nodename = int8ToStr(system.Nodename[:])
+		uname.Hostname = uname.Nodename
+		uname.Release = int8ToStr(system.Release[:])
+		uname.Kernel = uname.Release
+		uname.Version = int8ToStr(system.Version[:])
+		uname.Machine = int8ToStr(system.Machine[:])
+		uname.Arch = uname.Machine
+		uname.Domainname = int8ToStr(system.Domainname[:])
+	}
+
+	return uname
+}