[src/trunk]: src/sbin/sysctl add handler for /kern/evcnt and print the actual...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f7c322be871f
branches:  trunk
changeset: 333581:f7c322be871f
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Nov 09 18:36:02 2014 +0000

description:
add handler for /kern/evcnt and print the actual error when failing.

diffstat:

 sbin/sysctl/sysctl.c |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (46 lines):

diff -r f31363a6899b -r f7c322be871f sbin/sysctl/sysctl.c
--- a/sbin/sysctl/sysctl.c      Sun Nov 09 18:23:28 2014 +0000
+++ b/sbin/sysctl/sysctl.c      Sun Nov 09 18:36:02 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysctl.c,v 1.153 2014/05/16 12:22:32 martin Exp $ */
+/*     $NetBSD: sysctl.c,v 1.154 2014/11/09 18:36:02 christos Exp $ */
 
 /*-
  * Copyright (c) 2003 The NetBSD Foundation, Inc.
@@ -68,7 +68,7 @@
 #if 0
 static char sccsid[] = "@(#)sysctl.c   8.1 (Berkeley) 6/6/93";
 #else
-__RCSID("$NetBSD: sysctl.c,v 1.153 2014/05/16 12:22:32 martin Exp $");
+__RCSID("$NetBSD: sysctl.c,v 1.154 2014/11/09 18:36:02 christos Exp $");
 #endif
 #endif /* not lint */
 
@@ -181,6 +181,7 @@
        const void *ps_d;
 } handlers[] = {
        { "/kern/clockrate",                    kern_clockrate, NULL, NULL },
+       { "/kern/evcnt",                        printother, NULL, "vmstat -e" },
        { "/kern/vnode",                        printother, NULL, "pstat" },
        { "/kern/proc(2|_args)?",               printother, NULL, "ps" },
        { "/kern/file2?",                       printother, NULL, "pstat" },
@@ -688,6 +689,8 @@
        }
 
        if (type != CTLTYPE_NODE && pnode->sysctl_size == 0) {
+               printf("x=%zu\n", sz);
+               sz = 0;
                rc = prog_sysctl(&name[0], namelen, NULL, &sz, NULL, 0);
                if (rc == -1) {
                        sysctlerror(1);
@@ -1701,8 +1704,8 @@
                case EOPNOTSUPP:
                case EPROTONOSUPPORT:
                        if (Aflag || req)
-                               sysctlperror("%s: the value is not available\n",
-                                            gsname);
+                               sysctlperror("%s: the value is not available "
+                                   "(%s)\n", gsname, strerror(errno));
                        return;
                }
        }