[src/trunk]: src/usr.bin/systat use more sysctl

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

details:   https://anonhg.NetBSD.org/src/rev/54efd64c43ab
branches:  trunk
changeset: 782855:54efd64c43ab
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Nov 23 03:37:27 2012 +0000

description:
use more sysctl

diffstat:

 usr.bin/systat/bufcache.c |  24 +++++++-----------------
 1 files changed, 7 insertions(+), 17 deletions(-)

diffs (63 lines):

diff -r 8ecbc3967e8a -r 54efd64c43ab usr.bin/systat/bufcache.c
--- a/usr.bin/systat/bufcache.c Fri Nov 23 03:33:05 2012 +0000
+++ b/usr.bin/systat/bufcache.c Fri Nov 23 03:37:27 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bufcache.c,v 1.22 2008/04/28 20:24:15 martin Exp $     */
+/*     $NetBSD: bufcache.c,v 1.23 2012/11/23 03:37:27 christos Exp $   */
 
 /*-
  * Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: bufcache.c,v 1.22 2008/04/28 20:24:15 martin Exp $");
+__RCSID("$NetBSD: bufcache.c,v 1.23 2012/11/23 03:37:27 christos Exp $");
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -74,16 +74,10 @@
        struct mount ml_mount;
 };
 
-static struct nlist namelist[] = {
-#define        X_BUFMEM        0
-       { .n_name = "_bufmem" },
-       { .n_name = NULL },
-};
-
 static struct vcache vcache[VCACHE_SIZE];
 static LIST_HEAD(mount_list, ml_entry) mount_list;
 
-static u_long bufmem;
+static uint64_t bufmem;
 static u_int nbuf, pgwidth, kbwidth;
 static struct uvmexp_sysctl uvmexp;
 
@@ -133,8 +127,11 @@
        int tbuf, i, lastrow;
        double tvalid, tsize;
        struct ml_entry *ml;
+       size_t len;
 
-       NREAD(X_BUFMEM, &bufmem, sizeof(bufmem));
+       len = sizeof(bufmem);
+       if (sysctlbyname("vm.bufmem", &bufmem, &len, NULL, 0))
+               error("can't get \"vm.bufmmem\": %s", strerror(errno));
 
        mvwprintw(wnd, 0, 0,
            "   %*d metadata buffers using             %*ld kBytes of "
@@ -218,13 +215,6 @@
 int
 initbufcache(void)
 {
-       if (namelist[0].n_type == 0) {
-               if (kvm_nlist(kd, namelist)) {
-                       nlisterr(namelist);
-                       return(0);
-               }
-       }
-
        fetchuvmexp();
        pgwidth = (int)(floor(log10((double)uvmexp.npages)) + 1);
        kbwidth = (int)(floor(log10(uvmexp.npages * getpagesize() / 1024.0)) +