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--- src/cpu_freebsd.c.orig 2016-10-20 13:55:48 UTC
+++ src/cpu_freebsd.c
@@ -16,7 +16,8 @@
#include <string.h>
#include "cpu.h"
-#include <kvm.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
#include <fcntl.h>
#include <sys/param.h>
@@ -27,27 +28,21 @@
# include <sys/resource.h>
#endif /* __FreeBSD_version < 500101 */
-static kvm_t *kd = NULL;
-static struct nlist nlst[] = { {"_cp_time"}, {0} };
+static int sysctl_mib[2] = { -1, -1 };
+static size_t sysctl_len;
void
cpu_init(void)
{
- kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open");
+ sysctl_len = 2;
+ sysctlnametomib("kern.cp_time", sysctl_mib, &sysctl_len);
- if (kd == NULL) {
- fprintf(stderr, "can't open kernel virtual memory");
+ if (sysctl_mib[0] == -1) {
+ fprintf(stderr, "unknown sysctl kern.cp_time");
exit(1);
}
- kvm_nlist(kd, nlst);
-
- if (nlst[0].n_type == 0) {
- fprintf(stderr, "error extracting symbols");
- exit(1);
- }
-
/* drop setgid & setuid (the latter should not be there really) */
seteuid(getuid());
setegid(getgid());
@@ -66,8 +61,8 @@ cpu_get_usage(cpu_options *opts)
int used, total, result;
unsigned long int cpu_time[CPUSTATES];
- if (kvm_read(kd, nlst[0].n_value, &cpu_time, sizeof(cpu_time)) !=
- sizeof(cpu_time))
+ sysctl_len = sizeof(cpu_time);
+ if (sysctl(sysctl_mib, 2, &cpu_time, &sysctl_len, NULL, 0) == -1)
return 0;
/* calculate usage */
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