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Use the new sysctl(3) interface to mbuf statistics rather than

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groveling about in kmem.
This commit is contained in:
wollman 1997-02-24 20:40:40 +00:00
parent a174a13af3
commit dc73a48dfc
1 changed files with 19 additions and 7 deletions
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26
usr.bin/netstat/mbuf.c
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@ -36,9 +36,10 @@ static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */ #endif /* not lint */
#include <sys/param.h> #include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/protosw.h> #include <sys/protosw.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/mbuf.h> #include <sys/sysctl.h>
#include <stdio.h> #include <stdio.h>
#include "netstat.h" #include "netstat.h"
@ -82,17 +83,28 @@ mbpr(mbaddr)
register int totmem, totfree, totmbufs; register int totmem, totfree, totmbufs;
register int i; register int i;
register struct mbtypes *mp; register struct mbtypes *mp;
int name[3];
size_t mbstatlen;
name[0] = CTL_KERN;
name[1] = KERN_IPC;
name[2] = KIPC_MBSTAT;
mbstatlen = sizeof mbstat;
if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) {
warn("sysctl: retrieving mbstat");
return;
}
#undef MSIZE
#define MSIZE (mbstat.m_msize)
#undef MCLBYTES
#define MCLBYTES (mbstat.m_mclbytes)
if (nmbtypes != 256) { if (nmbtypes != 256) {
warnx("unexpected change to mbstat; check source"); warnx("unexpected change to mbstat; check source");
return; return;
} }
if (mbaddr == 0) {
warnx("mbstat: symbol not in namelist");
return;
}
if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
return;
totmbufs = 0; totmbufs = 0;
for (mp = mbtypes; mp->mt_name; mp++) for (mp = mbtypes; mp->mt_name; mp++)
totmbufs += mbstat.m_mtypes[mp->mt_type]; totmbufs += mbstat.m_mtypes[mp->mt_type];