1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/stat.h> 30 #include <sys/wait.h> 31 #include <fcntl.h> 32 #include <errno.h> 33 #include <signal.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <strings.h> 37 #include <unistd.h> 38 #include <libscf.h> 39 #include <libscf_priv.h> 40 #include <libintl.h> 41 #include <locale.h> 42 #include <zone.h> 43 #include <libzonecfg.h> 44 45 #include "utils.h" 46 #include "rcapd.h" 47 #include "rcapd_conf.h" 48 #include "rcapd_stat.h" 49 50 #define RCAP_FMRI "system/rcap:default" 51 52 static void 53 usage() 54 { 55 (void) fprintf(stderr, 56 gettext("usage: rcapadm\n" 57 " [-E|-D] " 58 "# enable/disable rcapd\n" 59 " [-n] " 60 "# don't start/stop rcapd\n" 61 " [-i <scan|sample|report|config>=value] " 62 "# set intervals\n" 63 " [-c <percent>] " 64 "# set memory cap\n" 65 " " 66 "# enforcement threshold\n" 67 " [-z <zonename> -m <max-rss>] " 68 "# update zone memory cap\n")); 69 exit(E_USAGE); 70 } 71 72 static rcfg_t conf; 73 static int enable = -1; 74 static int disable = -1; 75 static int pressure = -1; 76 static int no_starting_stopping = -1; 77 static int scan_interval = -1; 78 static int report_interval = -1; 79 static int config_interval = -1; 80 static int sample_interval = -1; 81 static char *fname = RCAPD_DEFAULT_CONF_FILE; 82 83 static char *subopt_v[] = { 84 "scan", 85 "sample", 86 "report", 87 "config", 88 NULL 89 }; 90 91 typedef enum { 92 OPT_SCAN = 0, 93 OPT_SAMPLE, 94 OPT_REPORT, 95 OPT_CONFIG 96 } subopt_idx_t; 97 98 static void 99 print_state(void) 100 { 101 scf_simple_prop_t *persistent_prop = NULL; 102 scf_simple_prop_t *temporary_prop = NULL; 103 uint8_t *persistent = NULL; 104 uint8_t *temporary = NULL; 105 scf_handle_t *h; 106 /* LINTED: conditionally assigned and used in function */ 107 ssize_t numvals; 108 109 if ((h = scf_handle_create(SCF_VERSION)) == NULL || 110 scf_handle_bind(h) != 0) 111 goto out; 112 113 if ((persistent_prop = scf_simple_prop_get(h, RCAP_FMRI, 114 SCF_PG_GENERAL, SCF_PROPERTY_ENABLED)) != NULL && (numvals = 115 scf_simple_prop_numvalues(persistent_prop)) > 0) 116 persistent = scf_simple_prop_next_boolean(persistent_prop); 117 118 if ((temporary_prop = scf_simple_prop_get(h, RCAP_FMRI, 119 SCF_PG_GENERAL_OVR, SCF_PROPERTY_ENABLED)) != NULL && (numvals = 120 scf_simple_prop_numvalues(temporary_prop)) > 0) 121 temporary = scf_simple_prop_next_boolean(temporary_prop); 122 123 out: 124 if (!persistent) 125 (void) printf(gettext(" " 126 "state: unknown")); 127 else if (temporary && *temporary != *persistent) 128 (void) printf(gettext(" " 129 "state: %s (%s at next boot)\n"), *temporary ? 130 gettext("enabled") : gettext("disabled"), *persistent ? 131 gettext("enabled") : gettext("disabled")); 132 else 133 (void) printf(gettext(" " 134 "state: %s\n"), *persistent ? gettext("enabled") : 135 gettext("disabled")); 136 137 scf_simple_prop_free(temporary_prop); 138 scf_simple_prop_free(persistent_prop); 139 scf_handle_destroy(h); 140 } 141 142 /* 143 * Update the in-kernel memory cap for the specified zone. 144 */ 145 static int 146 update_zone_mcap(char *zonename, char *maxrss) 147 { 148 zoneid_t zone_id; 149 uint64_t num; 150 151 if (getzoneid() != GLOBAL_ZONEID || zonecfg_in_alt_root()) 152 return (E_SUCCESS); 153 154 /* get the running zone from the kernel */ 155 if ((zone_id = getzoneidbyname(zonename)) == -1) { 156 (void) fprintf(stderr, gettext("zone '%s' must be running\n"), 157 zonename); 158 return (E_ERROR); 159 } 160 161 if (zonecfg_str_to_bytes(maxrss, &num) == -1) { 162 (void) fprintf(stderr, gettext("invalid max-rss value\n")); 163 return (E_ERROR); 164 } 165 166 if (zone_setattr(zone_id, ZONE_ATTR_PHYS_MCAP, &num, 0) == -1) { 167 (void) fprintf(stderr, gettext("could not set memory " 168 "cap for zone '%s'\n"), zonename); 169 return (E_ERROR); 170 } 171 172 return (E_SUCCESS); 173 } 174 175 int 176 main(int argc, char *argv[]) 177 { 178 char *subopts, *optval; 179 int modified = 0; 180 boolean_t refresh = B_FALSE; 181 int opt; 182 char *zonename; 183 char *maxrss = NULL; 184 185 (void) setprogname("rcapadm"); 186 (void) setlocale(LC_ALL, ""); 187 (void) textdomain(TEXT_DOMAIN); 188 189 while ((opt = getopt(argc, argv, "DEc:i:m:nz:")) != EOF) { 190 switch (opt) { 191 case 'n': 192 no_starting_stopping = 1; 193 break; 194 case 'c': 195 if ((pressure = xatoi(optarg)) < 0 || 196 pressure > 100 || 197 errno == EINVAL) 198 usage(); 199 modified++; 200 break; 201 case 'E': 202 enable = 1; 203 disable = 0; 204 modified++; 205 break; 206 case 'D': 207 disable = 1; 208 enable = 0; 209 modified++; 210 break; 211 case 'i': 212 subopts = optarg; 213 while (*subopts != '\0') { 214 switch (getsubopt(&subopts, subopt_v, 215 &optval)) { 216 case OPT_SCAN: 217 if (optval == NULL || 218 (scan_interval = 219 xatoi(optval)) <= 0) 220 usage(); 221 break; 222 case OPT_SAMPLE: 223 if (optval == NULL || 224 (sample_interval = 225 xatoi(optval)) <= 0) 226 usage(); 227 break; 228 case OPT_REPORT: 229 if (optval == NULL || 230 (report_interval = 231 xatoi(optval)) < 0) 232 usage(); 233 break; 234 case OPT_CONFIG: 235 if (optval == NULL || 236 (config_interval = 237 xatoi(optval)) < 0) 238 usage(); 239 break; 240 default: 241 usage(); 242 } 243 } 244 modified++; 245 break; 246 case 'm': 247 maxrss = optarg; 248 break; 249 case 'z': 250 refresh = B_TRUE; 251 zonename = optarg; 252 break; 253 default: 254 usage(); 255 } 256 } 257 258 /* the -z & -m options must be used together */ 259 if (argc > optind || (refresh && maxrss == NULL) || 260 (!refresh && maxrss != NULL)) 261 usage(); 262 263 if (refresh && (no_starting_stopping > 0 || modified)) 264 usage(); 265 266 if (rcfg_read(fname, -1, &conf, NULL) < 0) { 267 if (!(errno == ENOENT && modified)) { 268 die(gettext("resource caps not configured\n")); 269 return (E_ERROR); 270 } 271 rcfg_init(&conf); 272 conf.rcfg_mode_name = "project"; 273 } else { 274 /* 275 * The configuration file has been read. Warn that any lnode 276 * (or non-project) mode specification (by an SRM 277 * 1.3 configuration file, for example) is ignored. 278 */ 279 if (strcmp(conf.rcfg_mode_name, "project") != 0) { 280 warn(gettext("%s mode specification ignored -- using" 281 " project mode\n"), conf.rcfg_mode_name); 282 conf.rcfg_mode_name = "project"; 283 conf.rcfg_mode = rctype_project; 284 } 285 } 286 287 if (refresh) 288 return (update_zone_mcap(zonename, maxrss)); 289 290 if (modified) { 291 if (pressure >= 0) 292 conf.rcfg_memory_cap_enforcement_pressure = pressure; 293 if (config_interval >= 0) 294 conf.rcfg_reconfiguration_interval = config_interval; 295 if (scan_interval >= 0) 296 conf.rcfg_proc_walk_interval = scan_interval; 297 if (report_interval >= 0) 298 conf.rcfg_report_interval = report_interval; 299 if (sample_interval >= 0) 300 conf.rcfg_rss_sample_interval = sample_interval; 301 302 /* 303 * Create config file with the new parameter(s). The 304 * create_config_file will exit if it fails. 305 */ 306 create_config_file(&conf); 307 308 if (enable > 0 && smf_enable_instance(RCAP_FMRI, 309 no_starting_stopping > 0 ? SMF_AT_NEXT_BOOT : 0) != 0) 310 die(gettext("cannot enable service: %s\n"), 311 scf_strerror(scf_error())); 312 else if (disable > 0 && smf_disable_instance(RCAP_FMRI, 313 no_starting_stopping > 0 ? SMF_AT_NEXT_BOOT : 0) != 0) 314 die(gettext("cannot disable service: %s\n"), 315 scf_strerror(scf_error())); 316 317 return (E_SUCCESS); 318 } 319 320 /* 321 * Display current configuration 322 */ 323 print_state(); 324 (void) printf(gettext(" memory cap enforcement" 325 " threshold: %d%%\n"), conf.rcfg_memory_cap_enforcement_pressure); 326 (void) printf(gettext(" process scan rate" 327 " (sec): %d\n"), conf.rcfg_proc_walk_interval); 328 (void) printf(gettext(" reconfiguration rate" 329 " (sec): %d\n"), conf.rcfg_reconfiguration_interval); 330 (void) printf(gettext(" report rate" 331 " (sec): %d\n"), conf.rcfg_report_interval); 332 (void) printf(gettext(" RSS sampling rate" 333 " (sec): %d\n"), conf.rcfg_rss_sample_interval); 334 335 return (E_SUCCESS); 336 } 337