Add support for OpenBSD

process_openbsd.go

@@ -0,0 +1,68 @@
+// +build openbsd
+
+package ps
+
+// #cgo LDFLAGS: -lkvm
+// #include "process_openbsd.h"
+import "C"
+
+var openbsdProcs []Process
+
+func findProcess(pid int) (Process, error) {
+	ps, err := processes()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, p := range ps {
+		if p.Pid() == pid {
+			return p, nil
+		}
+	}
+
+	return nil, nil
+}
+
+type OpenBSDProcess struct {
+	pid    int
+	ppid   int
+	binary string
+}
+
+func newOpenBSDProcess() *OpenBSDProcess {
+	return &OpenBSDProcess{}
+}
+
+func (p *OpenBSDProcess) Pid() int {
+	return p.pid
+}
+
+func (p *OpenBSDProcess) PPid() int {
+	return p.ppid
+}
+
+func (p *OpenBSDProcess) Executable() string {
+	return p.binary
+}
+
+//export go_openbsd_append_proc
+func go_openbsd_append_proc(pid C.pid_t, ppid C.pid_t, comm *C.char) {
+	proc := &OpenBSDProcess{
+		pid:    int(pid),
+		ppid:   int(ppid),
+		binary: C.GoString(comm),
+	}
+
+	openbsdProcs = append(openbsdProcs, proc)
+}
+
+func processes() ([]Process, error) {
+	openbsdProcs = make([]Process, 0, 50)
+
+	_, err := C.openbsdProcesses()
+	if err != nil {
+		return nil, err
+	}
+
+	return openbsdProcs, nil
+}

process_openbsd.h

@@ -0,0 +1,31 @@
+// +build openbsd
+
+#include <errno.h>
+#include <stdio.h>
+#include <kvm.h>
+#include <limits.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+extern void go_openbsd_append_proc(pid_t, pid_t, char *);
+
+static inline int openbsdProcesses() {
+	int nentries = 0;
+	int i = 0;
+	char errbuf[_POSIX2_LINE_MAX];
+	struct kinfo_proc *result = NULL;
+	kvm_t *kernel = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
+	if (!kernel) {
+		return errno; 
+	} 
+	result = kvm_getprocs(kernel, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &nentries);
+	for (i = 0; i < nentries; i++) {
+		struct kinfo_proc *single = &result[i]; 
+		go_openbsd_append_proc(
+			single->p_pid,
+			single->p_ppid,
+			single->p_comm);
+	}
+
+	return 0;
+}