freebsd-nq/usr.bin/procstat/procstat_rlimit.c

/*-
 * Copyright (c) 2011 Mikolaj Golub
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/resourcevar.h>
#include <sys/sysctl.h>
#include <sys/user.h>

#include <err.h>
#include <errno.h>
#include <libprocstat.h>
#include <libutil.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "procstat.h"

static struct {
	const char *name;
	const char *suffix;
} rlimit_param[13] = {
	{"cputime",          "sec"},
	{"filesize",         "B  "},
	{"datasize",         "B  "},
	{"stacksize",        "B  "},
	{"coredumpsize",     "B  "},
	{"memoryuse",        "B  "},
	{"memorylocked",     "B  "},
	{"maxprocesses",     "   "},
	{"openfiles",        "   "},
	{"sbsize",           "B  "},
	{"vmemoryuse",       "B  "},
	{"pseudo-terminals", "   "},
	{"swapuse",          "B  "},
};

#if RLIM_NLIMITS > 13
#error "Resource limits have grown. Add new entries to rlimit_param[]."
#endif

static struct rlimit rlimit[RLIM_NLIMITS];

static
const char *humanize_rlimit(int indx, rlim_t limit)
{
	static char buf[14];
	int scale;

	if (limit == RLIM_INFINITY)
		return ("infinity     ");

	scale = humanize_number(buf, sizeof(buf) - 1, (int64_t)limit,
	    rlimit_param[indx].suffix, HN_AUTOSCALE | HN_GETSCALE, HN_DECIMAL);
	(void)humanize_number(buf, sizeof(buf) - 1, (int64_t)limit,
	    rlimit_param[indx].suffix, HN_AUTOSCALE, HN_DECIMAL);
	/* Pad with one space if there is no suffix prefix. */
	if (scale == 0)
		sprintf(buf + strlen(buf), " ");
	return (buf);
}

void
procstat_rlimit(struct kinfo_proc *kipp)
{
	int error, i, name[5];
	size_t len;

	if (!hflag) {
		printf("%5s %-16s %-16s %16s %16s\n",
		    "PID", "COMM", "RLIMIT", "SOFT     ", "HARD     ");
	}
	len = sizeof(struct rlimit);
	name[0] = CTL_KERN;
	name[1] = KERN_PROC;
	name[2] = KERN_PROC_RLIMIT;
	name[3] = kipp->ki_pid;
	for (i = 0; i < RLIM_NLIMITS; i++) {
		name[4] = i;
		error = sysctl(name, 5, &rlimit[i], &len, NULL, 0);
		if (error < 0 && errno != ESRCH) {
			warn("sysctl: kern.proc.rlimit: %d", kipp->ki_pid);
			return;
		}
		if (error < 0 || len != sizeof(struct rlimit))
			return;

		printf("%5d %-16s %-16s ", kipp->ki_pid, kipp->ki_comm,
		    rlimit_param[i].name);
		printf("%16s ", humanize_rlimit(i, rlimit[i].rlim_cur));
		printf("%16s\n", humanize_rlimit(i, rlimit[i].rlim_max));
        }
}