From 6c7a0d64c96e8f0c9db396ce39bc593787ff794f Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Mon, 1 Dec 2008 01:45:52 +0000
Subject: Use libutil wrapper for kinfo_get{file|vmmap}()

---
 usr.bin/procstat/Makefile         |  4 ++++
 usr.bin/procstat/procstat_files.c | 35 ++++++---------------------------
 usr.bin/procstat/procstat_vm.c    | 41 ++++++---------------------------------
 3 files changed, 16 insertions(+), 64 deletions(-)

(limited to 'usr.bin/procstat')

diff --git a/usr.bin/procstat/Makefile b/usr.bin/procstat/Makefile
index e3c77e4..6cb5895 100644
--- a/usr.bin/procstat/Makefile
+++ b/usr.bin/procstat/Makefile
@@ -12,4 +12,8 @@ SRCS=	procstat.c		\
 	procstat_threads.c	\
 	procstat_vm.c
 
+LDADD+=	-lutil
+DPADD+=	${LIBUTIL}
+WARNS?=	4
+
 .include <bsd.prog.mk>
diff --git a/usr.bin/procstat/procstat_files.c b/usr.bin/procstat/procstat_files.c
index 3667913..1f620f3 100644
--- a/usr.bin/procstat/procstat_files.c
+++ b/usr.bin/procstat/procstat_files.c
@@ -41,6 +41,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <libutil.h>
 
 #include "procstat.h"
 
@@ -134,42 +135,18 @@ void
 procstat_files(pid_t pid, struct kinfo_proc *kipp)
 {
 	struct kinfo_file *freep, *kif;
-	int error, name[4];
-	unsigned int i;
+	int i, cnt;
 	const char *str;
-	size_t len;
 
 	if (!hflag)
 		printf("%5s %-16s %4s %1s %1s %-8s %3s %7s %-3s %-12s\n",
 		    "PID", "COMM", "FD", "T", "V", "FLAGS", "REF", "OFFSET",
 		    "PRO", "NAME");
 
-	name[0] = CTL_KERN;
-	name[1] = KERN_PROC;
-	name[2] = KERN_PROC_FILEDESC;
-	name[3] = pid;
-
-	error = sysctl(name, 4, NULL, &len, NULL, 0);
-	if (error < 0 && errno != ESRCH && errno != EPERM) {
-		warn("sysctl: kern.proc.filedesc: %d", pid);
-		return;
-	}
-	if (error < 0)
-		return;
-
-	freep = kif = malloc(len);
-	if (kif == NULL)
-		err(-1, "malloc");
-
-	if (sysctl(name, 4, kif, &len, NULL, 0) < 0) {
-		warn("sysctl: kern.proc.filedesc %d", pid);
-		free(freep);
-		return;
-	}
-
-	for (i = 0; i < len / sizeof(*kif); i++, kif++) {
-		if (kif->kf_structsize != sizeof(*kif))
-			errx(-1, "kinfo_file mismatch");
+	freep = kinfo_getfile(pid, &cnt);
+	for (i = 0; i < cnt; i++) {
+		kif = &freep[i];
+		
 		printf("%5d ", pid);
 		printf("%-16s ", kipp->ki_comm);
 		switch (kif->kf_fd) {
diff --git a/usr.bin/procstat/procstat_vm.c b/usr.bin/procstat/procstat_vm.c
index a658382..f7ffe58 100644
--- a/usr.bin/procstat/procstat_vm.c
+++ b/usr.bin/procstat/procstat_vm.c
@@ -34,6 +34,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <libutil.h>
 
 #include "procstat.h"
 
@@ -41,10 +42,9 @@ void
 procstat_vm(pid_t pid, struct kinfo_proc *kipp __unused)
 {
 	struct kinfo_vmentry *freep, *kve;
-	int error, name[4], ptrwidth;
-	unsigned int i;
+	int ptrwidth;
+	int i, cnt;
 	const char *str;
-	size_t len;
 
 	ptrwidth = 2*sizeof(void *) + 2;
 	if (!hflag)
@@ -52,38 +52,9 @@ procstat_vm(pid_t pid, struct kinfo_proc *kipp __unused)
 		    "PID", ptrwidth, "START", ptrwidth, "END", "PRT", "RES",
 		    "PRES", "REF", "SHD", "FL", "TP", "PATH");
 
-	name[0] = CTL_KERN;
-	name[1] = KERN_PROC;
-	name[2] = KERN_PROC_VMMAP;
-	name[3] = pid;
-
-	len = 0;
-	error = sysctl(name, 4, NULL, &len, NULL, 0);
-	if (error < 0 && errno != ESRCH && errno != EPERM) {
-		warn("sysctl: kern.proc.vmmap: %d", pid);
-		return;
-	}
-	if (error < 0)
-		return;
-
-	/*
-	 * Especially if running procstat -sv, we may need room for more
-	 * mappings when printing than were present when we queried, so pad
-	 * out the allocation a bit.
-	 */
-	len += sizeof(*kve) * 3;
-	freep = kve = malloc(len);
-	if (kve == NULL)
-		err(-1, "malloc");
-	if (sysctl(name, 4, kve, &len, NULL, 0) < 0) {
-		warn("sysctl: kern.proc.vmmap: %d", pid);
-		free(freep);
-		return;
-	}
-
-	for (i = 0; i < (len / sizeof(*kve)); i++, kve++) {
-		if (kve->kve_structsize != sizeof(*kve))
-			errx(-1, "kinfo_vmentry structure mismatch");
+	freep = kinfo_getvmmap(pid, &cnt);
+	for (i = 0; i < cnt; i++) {
+		kve = &freep[i];
 		printf("%5d ", pid);
 		printf("%*p ", ptrwidth, kve->kve_start);
 		printf("%*p ", ptrwidth, kve->kve_end);
-- 
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