yes, I know there's a src/OpenBSD in there too.
it's not used somehow...

--- src/NetBSD/os.c.orig	Thu Apr 24 02:21:29 2003
+++ src/NetBSD/os.c	Tue Sep 24 00:05:20 2013
@@ -26,7 +26,9 @@
 #include <fcntl.h>
 #include <limits.h>
 #include <sys/param.h>
+#include <sys/proc.h>
 #include <sys/sysctl.h>
+#include <stdlib.h>
 #include <X11/Intrinsic.h>
 #include <X11/StringDefs.h>
 #include <Xm/Xm.h>
@@ -82,11 +84,7 @@ GetProcInfo(void)
     exit(5);
   }
 
-#ifdef OpenBSD
-  kp = kvm_getprocs(kd, KERN_PROC_KTHREAD, 0, &nentries);
-#else
-  kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries);
-#endif
+  kp = kvm_getprocs(kd, KERN_PROC_KTHREAD, 0, sizeof(struct kinfo_proc), &nentries);
   if (kp == NULL) {
     char msg[_POSIX2_LINE_MAX * 2];
 
@@ -126,7 +124,7 @@ GetStatus(ProcInfo *p)
 #ifdef HAVE_REGEX
     if (active.match_regexp) {
       int regmatch = regexec(&active.re_pat, 
-			     IDtouser(proc->kp_eproc.e_pcred.p_ruid), 
+			     IDtouser(proc->p_ruid), 
 			     (size_t) NULL, (regmatch_t *) NULL,
 			     REG_NOTBOL|REG_NOTEOL);
       if (regmatch == REG_NOMATCH) {
@@ -134,7 +132,7 @@ GetStatus(ProcInfo *p)
       }
     } else {
 #endif
-      if (active.uid_displayed != proc->kp_eproc.e_pcred.p_ruid)
+      if (active.uid_displayed != proc->p_ruid)
 	return False;
 #ifdef HAVE_REGEX
     }
@@ -142,7 +140,7 @@ GetStatus(ProcInfo *p)
 }
 
   /* root process */
-  if (proc->kp_proc.p_pid == ROOT_PID && base.showKernel == False)
+  if (proc->p_pid == ROOT_PID && base.showKernel == False)
     return False;
 
   /* 
@@ -157,19 +155,21 @@ GetStatus(ProcInfo *p)
 
     See also the comments in BSDI/xps.c.  */
 
-  if (proc->kp_proc.p_flag & P_SYSTEM && base.showKernel == False)
+  if (proc->p_flag & P_SYSTEM && base.showKernel == False)
     /* a "kernel" process */
     return False;
   
-  EndNode->pid = proc->kp_proc.p_pid;
-  EndNode->ppid = proc->kp_eproc.e_ppid;
+  EndNode->pid = proc->p_pid;
+  EndNode->ppid = proc->p_ppid;
 
-  if (proc->kp_proc.p_pid == MyPid && !cmd_options.me_too)
+  if (proc->p_pid == MyPid && !cmd_options.me_too)
     pstat = SSLEEP;
-  else if ((proc->kp_proc.p_flag & P_INMEM) == 0)
+#if defined(P_INMEM)
+  else if ((proc->p_flag & P_INMEM) == 0)
     pstat = SSWAP;
+#endif
   else
-    pstat = proc->kp_proc.p_stat;
+    pstat = proc->p_stat;
 
   EndNode->color = base.nodeColor[pstat];
   return True;
@@ -179,26 +179,26 @@ void 
 GetProcName(ProcInfo *p, TREENODE *node)
 {
   ProcInfo proc = *p;
-  node->uid = proc->kp_eproc.e_pcred.p_ruid;
+  node->uid = proc->p_ruid;
 
-  if (proc->kp_proc.p_stat == SZOMB)
+  if (proc->p_stat == SZOMB)
     strcpy(node->label, "*zombie*");
-  else if (proc->kp_proc.p_pid == ROOT_PID)
+  else if (proc->p_pid == ROOT_PID)
     strcpy(node->label, "*root*");
-  else if (proc->kp_proc.p_flag & SIDL)
+  else if (proc->p_flag & SIDL)
     strcpy(node->label, "*kernel*");
   else  {
       char *username;
       int i;
 
-      strncpy(node->label, proc->kp_proc.p_comm, 16);
-      if ((proc->kp_proc.p_pid != MyPid) && (proc->kp_proc.p_stat != SSLEEP)) return;
+      strncpy(node->label, proc->p_comm, 16);
+      if ((proc->p_pid != MyPid) && (proc->p_stat != SSLEEP)) return;
 
       /* We've got a sleeping process. (Hopefully that's the majority of 
 	 the processes. Assign a color based on userid. */
-      node->color = GetUID_Color(proc->kp_eproc.e_pcred.p_ruid);
+      node->color = GetUID_Color(proc->p_ruid);
  
-      if ( (username=IDtouser(proc->kp_eproc.e_pcred.p_ruid)) != NULL ) {
+      if ( (username=IDtouser(proc->p_ruid)) != NULL ) {
 	strcpy(node->label1, username);
       } else {
 	strcpy(node->label1, UNKNOWN_USER);
@@ -209,7 +209,7 @@ GetProcName(ProcInfo *p, TREENODE *node)
 #ifdef XPS_RECOLOR_LOGIN_PROCESSES      
       for (i=0;i<NUMLABS ;i++ ) {
 	if (strcmp(node->label, label_array[i]) == 0) {
-	  strcpy(node->label, IDtouser(proc->kp_eproc.e_pcred.p_ruid));
+	  strcpy(node->label, IDtouser(proc->p_ruid));
 	  strcpy(node->label1, label_array[i]);
 	  node->color = base.xterm;
 	  node->show_username = 1;
@@ -218,7 +218,7 @@ GetProcName(ProcInfo *p, TREENODE *node)
       } /* endfor */
 #endif
 
-      if ((proc->kp_proc.p_pid == base.selected_pid)) {
+      if ((proc->p_pid == base.selected_pid)) {
 	node->color = base.selected_color;
       }