diskstats
struct diskstats *stats;
struct diskstats *sdk;
free(diskstats, M_SYSCTL, diskstatslen);
diskstats = NULL;
diskstats = mallocarray(count, sizeof(struct diskstats),
diskstatslen = count * sizeof(struct diskstats);
sdk = diskstats;
sdk = diskstats;
struct diskstats *diskstats = NULL;
return (sysctl_rdstruct(oldp, oldlenp, newp, diskstats,
disk_count * sizeof(struct diskstats)));
struct diskstats *q;
size = cur.dk_ndrive * sizeof(struct diskstats);
memset(q, 0, cur.dk_ndrive * sizeof(struct diskstats));