Vendor psutils and remove neko

plugins/system/ps/process/process_posix.go

@@ -0,0 +1,102 @@
+// +build linux freebsd darwin
+
+package process
+
+import (
+	"os"
+	"os/exec"
+	"os/user"
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+// POSIX
+func getTerminalMap() (map[uint64]string, error) {
+	ret := make(map[uint64]string)
+	var termfiles []string
+
+	d, err := os.Open("/dev")
+	if err != nil {
+		return nil, err
+	}
+	defer d.Close()
+
+	devnames, err := d.Readdirnames(-1)
+	for _, devname := range devnames {
+		if strings.HasPrefix(devname, "/dev/tty") {
+			termfiles = append(termfiles, "/dev/tty/"+devname)
+		}
+	}
+
+	ptsd, err := os.Open("/dev/pts")
+	if err != nil {
+		return nil, err
+	}
+	defer ptsd.Close()
+
+	ptsnames, err := ptsd.Readdirnames(-1)
+	for _, ptsname := range ptsnames {
+		termfiles = append(termfiles, "/dev/pts/"+ptsname)
+	}
+
+	for _, name := range termfiles {
+		stat := syscall.Stat_t{}
+		if err = syscall.Stat(name, &stat); err != nil {
+			return nil, err
+		}
+		rdev := uint64(stat.Rdev)
+		ret[rdev] = strings.Replace(name, "/dev", "", -1)
+	}
+	return ret, nil
+}
+
+func (p *Process) SendSignal(sig syscall.Signal) error {
+	sigAsStr := "INT"
+	switch sig {
+	case syscall.SIGSTOP:
+		sigAsStr = "STOP"
+	case syscall.SIGCONT:
+		sigAsStr = "CONT"
+	case syscall.SIGTERM:
+		sigAsStr = "TERM"
+	case syscall.SIGKILL:
+		sigAsStr = "KILL"
+	}
+
+	cmd := exec.Command("kill", "-s", sigAsStr, strconv.Itoa(int(p.Pid)))
+	cmd.Stderr = os.Stderr
+	err := cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (p *Process) Suspend() error {
+	return p.SendSignal(syscall.SIGSTOP)
+}
+func (p *Process) Resume() error {
+	return p.SendSignal(syscall.SIGCONT)
+}
+func (p *Process) Terminate() error {
+	return p.SendSignal(syscall.SIGTERM)
+}
+func (p *Process) Kill() error {
+	return p.SendSignal(syscall.SIGKILL)
+}
+func (p *Process) Username() (string, error) {
+	uids, err := p.Uids()
+	if err != nil {
+		return "", err
+	}
+	if len(uids) > 0 {
+		u, err := user.LookupId(strconv.Itoa(int(uids[0])))
+		if err != nil {
+			return "", err
+		}
+		return u.Username, nil
+	}
+	return "", nil
+}