OpenSolaris_b135/cmd/rcap/rcapadm/rcapadm.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
#include <libscf.h>
#include <libscf_priv.h>
#include <libintl.h>
#include <locale.h>
#include <zone.h>
#include <libzonecfg.h>
#include "utils.h"
#include "rcapd.h"
#include "rcapd_conf.h"
#include "rcapd_stat.h"
static void
usage()
{
(void) fprintf(stderr,
gettext("usage: rcapadm\n"
" [-E|-D] "
"# enable/disable rcapd\n"
" [-n] "
"# don't start/stop rcapd\n"
" [-i <scan|sample|report|config>=value] "
"# set intervals\n"
" [-c <percent>] "
"# set memory cap\n"
" "
"# enforcement threshold\n"
" [-z <zonename> -m <max-rss>] "
"# update zone memory cap\n"));
exit(E_USAGE);
}
static rcfg_t conf;
static int enable = -1;
static int disable = -1;
static int pressure = -1;
static int no_starting_stopping = -1;
static int scan_interval = -1;
static int report_interval = -1;
static int config_interval = -1;
static int sample_interval = -1;
static char *subopt_v[] = {
"scan",
"sample",
"report",
"config",
NULL
};
typedef enum {
OPT_SCAN = 0,
OPT_SAMPLE,
OPT_REPORT,
OPT_CONFIG
} subopt_idx_t;
static void
print_state(void)
{
scf_simple_prop_t *persistent_prop = NULL;
scf_simple_prop_t *temporary_prop = NULL;
uint8_t *persistent = NULL;
uint8_t *temporary = NULL;
scf_handle_t *h;
/* LINTED: conditionally assigned and used in function */
ssize_t numvals;
if ((h = scf_handle_create(SCF_VERSION)) == NULL ||
scf_handle_bind(h) != 0)
goto out;
if ((persistent_prop = scf_simple_prop_get(h, RCAP_FMRI,
SCF_PG_GENERAL, SCF_PROPERTY_ENABLED)) != NULL && (numvals =
scf_simple_prop_numvalues(persistent_prop)) > 0)
persistent = scf_simple_prop_next_boolean(persistent_prop);
if ((temporary_prop = scf_simple_prop_get(h, RCAP_FMRI,
SCF_PG_GENERAL_OVR, SCF_PROPERTY_ENABLED)) != NULL && (numvals =
scf_simple_prop_numvalues(temporary_prop)) > 0)
temporary = scf_simple_prop_next_boolean(temporary_prop);
out:
if (!persistent)
(void) printf(gettext(" "
"state: unknown"));
else if (temporary && *temporary != *persistent)
(void) printf(gettext(" "
"state: %s (%s at next boot)\n"), *temporary ?
gettext("enabled") : gettext("disabled"), *persistent ?
gettext("enabled") : gettext("disabled"));
else
(void) printf(gettext(" "
"state: %s\n"), *persistent ? gettext("enabled") :
gettext("disabled"));
(void) printf(gettext(" memory cap enforcement"
" threshold: %d%%\n"), conf.rcfg_memory_cap_enforcement_pressure);
(void) printf(gettext(" process scan rate"
" (sec): %d\n"), conf.rcfg_proc_walk_interval);
(void) printf(gettext(" reconfiguration rate"
" (sec): %d\n"), conf.rcfg_reconfiguration_interval);
(void) printf(gettext(" report rate"
" (sec): %d\n"), conf.rcfg_report_interval);
(void) printf(gettext(" RSS sampling rate"
" (sec): %d\n"), conf.rcfg_rss_sample_interval);
scf_simple_prop_free(temporary_prop);
scf_simple_prop_free(persistent_prop);
scf_handle_destroy(h);
}
/*
* Update the in-kernel memory cap for the specified zone.
*/
static int
update_zone_mcap(char *zonename, char *maxrss)
{
zoneid_t zone_id;
uint64_t num;
if (getzoneid() != GLOBAL_ZONEID || zonecfg_in_alt_root())
return (E_SUCCESS);
/* get the running zone from the kernel */
if ((zone_id = getzoneidbyname(zonename)) == -1) {
(void) fprintf(stderr, gettext("zone '%s' must be running\n"),
zonename);
return (E_ERROR);
}
if (zonecfg_str_to_bytes(maxrss, &num) == -1) {
(void) fprintf(stderr, gettext("invalid max-rss value\n"));
return (E_ERROR);
}
if (zone_setattr(zone_id, ZONE_ATTR_PHYS_MCAP, &num, 0) == -1) {
(void) fprintf(stderr, gettext("could not set memory "
"cap for zone '%s'\n"), zonename);
return (E_ERROR);
}
return (E_SUCCESS);
}
int
main(int argc, char *argv[])
{
char *subopts, *optval;
int modified = 0;
boolean_t refresh = B_FALSE;
int opt;
char *zonename;
char *maxrss = NULL;
(void) setprogname("rcapadm");
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
while ((opt = getopt(argc, argv, "DEc:i:m:nz:")) != EOF) {
switch (opt) {
case 'n':
no_starting_stopping = 1;
break;
case 'c':
if ((pressure = xatoi(optarg)) < 0 ||
pressure > 100 ||
errno == EINVAL)
usage();
modified++;
break;
case 'E':
enable = 1;
disable = 0;
break;
case 'D':
disable = 1;
enable = 0;
break;
case 'i':
subopts = optarg;
while (*subopts != '\0') {
switch (getsubopt(&subopts, subopt_v,
&optval)) {
case OPT_SCAN:
if (optval == NULL ||
(scan_interval =
xatoi(optval)) <= 0)
usage();
break;
case OPT_SAMPLE:
if (optval == NULL ||
(sample_interval =
xatoi(optval)) <= 0)
usage();
break;
case OPT_REPORT:
if (optval == NULL ||
(report_interval =
xatoi(optval)) < 0)
usage();
break;
case OPT_CONFIG:
if (optval == NULL ||
(config_interval =
xatoi(optval)) < 0)
usage();
break;
default:
usage();
}
}
modified++;
break;
case 'm':
maxrss = optarg;
break;
case 'z':
refresh = B_TRUE;
zonename = optarg;
break;
default:
usage();
}
}
/* the -z & -m options must be used together */
if (argc > optind || (refresh && maxrss == NULL) ||
(!refresh && maxrss != NULL))
usage();
if (refresh && (no_starting_stopping > 0 || modified))
usage();
/*
* disable/enable before reading configuration from the repository
* which may fail and prevents the disabling/enabling to complete.
*/
if (disable > 0) {
if (smf_disable_instance(RCAP_FMRI, no_starting_stopping > 0
? SMF_AT_NEXT_BOOT : 0) != 0)
die(gettext("cannot disable service: %s\n"),
scf_strerror(scf_error()));
}
if (enable > 0) {
if (smf_enable_instance(RCAP_FMRI, no_starting_stopping > 0
? SMF_AT_NEXT_BOOT : 0) != 0)
die(gettext("cannot enable service: %s\n"),
scf_strerror(scf_error()));
}
if (rcfg_read(&conf, NULL) != E_SUCCESS) {
/*
* If instance is enabled, put it in maintenance since we
* failed to read configuration from the repository or
* create statistics file.
*/
if (strcmp(smf_get_state(RCAP_FMRI),
SCF_STATE_STRING_DISABLED) != 0)
(void) smf_maintain_instance(RCAP_FMRI, 0);
die(gettext("resource caps not configured\n"));
} else {
/* Done reading configuration */
if (strcmp(conf.rcfg_mode_name, "project") != 0) {
warn(gettext("%s mode specification ignored -- using"
" project mode\n"), conf.rcfg_mode_name);
conf.rcfg_mode_name = "project";
conf.rcfg_mode = rctype_project;
}
}
if (refresh)
return (update_zone_mcap(zonename, maxrss));
if (modified) {
if (pressure >= 0)
conf.rcfg_memory_cap_enforcement_pressure = pressure;
if (config_interval >= 0)
conf.rcfg_reconfiguration_interval = config_interval;
if (scan_interval >= 0)
conf.rcfg_proc_walk_interval = scan_interval;
if (report_interval >= 0)
conf.rcfg_report_interval = report_interval;
if (sample_interval >= 0)
conf.rcfg_rss_sample_interval = sample_interval;
/*
* Modify configuration with the new parameter(s). The
* function will exit if it fails.
*/
if ((modify_config(&conf)) != 0)
die(gettext("Error updating repository \n"));
if (smf_refresh_instance(RCAP_FMRI) != 0)
die(gettext("cannot refresh service: %s\n"),
scf_strerror(scf_error()));
}
/*
* Display current configuration
*/
print_state();
return (E_SUCCESS);
}