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 /* 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <sys/wait.h> 29 #include <fcntl.h> 30 #include <errno.h> 31 #include <signal.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <strings.h> 35 #include <unistd.h> 36 #include <libscf.h> 37 #include <libscf_priv.h> 38 #include <libintl.h> 39 #include <locale.h> 40 #include <zone.h> 41 #include <libzonecfg.h> 42 43 #include "utils.h" 44 #include "rcapd.h" 45 #include "rcapd_conf.h" 46 #include "rcapd_stat.h" 47 48 static void 49 usage() 50 { 51 (void) fprintf(stderr, 52 gettext("usage: rcapadm\n" 53 " [-E|-D] " 54 "# enable/disable rcapd\n" 55 " [-n] " 56 "# don't start/stop rcapd\n" 57 " [-i <scan|sample|report|config>=value] " 58 "# set intervals\n" 59 " [-c <percent>] " 60 "# set memory cap\n" 61 " " 62 "# enforcement threshold\n" 63 " [-z <zonename> -m <max-rss>] " 64 "# update zone memory cap\n")); 65 exit(E_USAGE); 66 } 67 68 static rcfg_t conf; 69 static int enable = -1; 70 static int disable = -1; 71 static int pressure = -1; 72 static int no_starting_stopping = -1; 73 static int scan_interval = -1; 74 static int report_interval = -1; 75 static int config_interval = -1; 76 static int sample_interval = -1; 77 78 static char *subopt_v[] = { 79 "scan", 80 "sample", 81 "report", 82 "config", 83 NULL 84 }; 85 86 typedef enum { 87 OPT_SCAN = 0, 88 OPT_SAMPLE, 89 OPT_REPORT, 90 OPT_CONFIG 91 } subopt_idx_t; 92 93 static void 94 print_state(void) 95 { 96 scf_simple_prop_t *persistent_prop = NULL; 97 scf_simple_prop_t *temporary_prop = NULL; 98 uint8_t *persistent = NULL; 99 uint8_t *temporary = NULL; 100 scf_handle_t *h; 101 /* LINTED: conditionally assigned and used in function */ 102 ssize_t numvals; 103 104 if ((h = scf_handle_create(SCF_VERSION)) == NULL || 105 scf_handle_bind(h) != 0) 106 goto out; 107 108 if ((persistent_prop = scf_simple_prop_get(h, RCAP_FMRI, 109 SCF_PG_GENERAL, SCF_PROPERTY_ENABLED)) != NULL && (numvals = 110 scf_simple_prop_numvalues(persistent_prop)) > 0) 111 persistent = scf_simple_prop_next_boolean(persistent_prop); 112 113 if ((temporary_prop = scf_simple_prop_get(h, RCAP_FMRI, 114 SCF_PG_GENERAL_OVR, SCF_PROPERTY_ENABLED)) != NULL && (numvals = 115 scf_simple_prop_numvalues(temporary_prop)) > 0) 116 temporary = scf_simple_prop_next_boolean(temporary_prop); 117 118 out: 119 if (!persistent) 120 (void) printf(gettext(" " 121 "state: unknown")); 122 else if (temporary && *temporary != *persistent) 123 (void) printf(gettext(" " 124 "state: %s (%s at next boot)\n"), *temporary ? 125 gettext("enabled") : gettext("disabled"), *persistent ? 126 gettext("enabled") : gettext("disabled")); 127 else 128 (void) printf(gettext(" " 129 "state: %s\n"), *persistent ? gettext("enabled") : 130 gettext("disabled")); 131 132 (void) printf(gettext(" memory cap enforcement" 133 " threshold: %d%%\n"), conf.rcfg_memory_cap_enforcement_pressure); 134 (void) printf(gettext(" process scan rate" 135 " (sec): %d\n"), conf.rcfg_proc_walk_interval); 136 (void) printf(gettext(" reconfiguration rate" 137 " (sec): %d\n"), conf.rcfg_reconfiguration_interval); 138 (void) printf(gettext(" report rate" 139 " (sec): %d\n"), conf.rcfg_report_interval); 140 (void) printf(gettext(" RSS sampling rate" 141 " (sec): %d\n"), conf.rcfg_rss_sample_interval); 142 143 scf_simple_prop_free(temporary_prop); 144 scf_simple_prop_free(persistent_prop); 145 scf_handle_destroy(h); 146 } 147 148 /* 149 * Update the in-kernel memory cap for the specified zone. 150 */ 151 static int 152 update_zone_mcap(char *zonename, char *maxrss) 153 { 154 zoneid_t zone_id; 155 uint64_t num; 156 157 if (getzoneid() != GLOBAL_ZONEID || zonecfg_in_alt_root()) 158 return (E_SUCCESS); 159 160 /* get the running zone from the kernel */ 161 if ((zone_id = getzoneidbyname(zonename)) == -1) { 162 (void) fprintf(stderr, gettext("zone '%s' must be running\n"), 163 zonename); 164 return (E_ERROR); 165 } 166 167 if (zonecfg_str_to_bytes(maxrss, &num) == -1) { 168 (void) fprintf(stderr, gettext("invalid max-rss value\n")); 169 return (E_ERROR); 170 } 171 172 if (zone_setattr(zone_id, ZONE_ATTR_PHYS_MCAP, &num, 0) == -1) { 173 (void) fprintf(stderr, gettext("could not set memory " 174 "cap for zone '%s'\n"), zonename); 175 return (E_ERROR); 176 } 177 178 return (E_SUCCESS); 179 } 180 181 int 182 main(int argc, char *argv[]) 183 { 184 char *subopts, *optval; 185 int modified = 0; 186 boolean_t refresh = B_FALSE; 187 int opt; 188 char *zonename; 189 char *maxrss = NULL; 190 191 (void) setpname("rcapadm"); 192 (void) setlocale(LC_ALL, ""); 193 (void) textdomain(TEXT_DOMAIN); 194 195 while ((opt = getopt(argc, argv, "DEc:i:m:nz:")) != EOF) { 196 switch (opt) { 197 case 'n': 198 no_starting_stopping = 1; 199 break; 200 case 'c': 201 if ((pressure = xatoi(optarg)) < 0 || 202 pressure > 100 || 203 errno == EINVAL) 204 usage(); 205 modified++; 206 break; 207 case 'E': 208 enable = 1; 209 disable = 0; 210 break; 211 case 'D': 212 disable = 1; 213 enable = 0; 214 break; 215 case 'i': 216 subopts = optarg; 217 while (*subopts != '\0') { 218 switch (getsubopt(&subopts, subopt_v, 219 &optval)) { 220 case OPT_SCAN: 221 if (optval == NULL || 222 (scan_interval = 223 xatoi(optval)) <= 0) 224 usage(); 225 break; 226 case OPT_SAMPLE: 227 if (optval == NULL || 228 (sample_interval = 229 xatoi(optval)) <= 0) 230 usage(); 231 break; 232 case OPT_REPORT: 233 if (optval == NULL || 234 (report_interval = 235 xatoi(optval)) < 0) 236 usage(); 237 break; 238 case OPT_CONFIG: 239 if (optval == NULL || 240 (config_interval = 241 xatoi(optval)) < 0) 242 usage(); 243 break; 244 default: 245 usage(); 246 } 247 } 248 modified++; 249 break; 250 case 'm': 251 maxrss = optarg; 252 break; 253 case 'z': 254 refresh = B_TRUE; 255 zonename = optarg; 256 break; 257 default: 258 usage(); 259 } 260 } 261 262 /* the -z & -m options must be used together */ 263 if (argc > optind || (refresh && maxrss == NULL) || 264 (!refresh && maxrss != NULL)) 265 usage(); 266 267 if (refresh && (no_starting_stopping > 0 || modified)) 268 usage(); 269 270 /* 271 * disable/enable before reading configuration from the repository 272 * which may fail and prevents the disabling/enabling to complete. 273 */ 274 if (disable > 0) { 275 if (smf_disable_instance(RCAP_FMRI, no_starting_stopping > 0 276 ? SMF_AT_NEXT_BOOT : 0) != 0) 277 die(gettext("cannot disable service: %s\n"), 278 scf_strerror(scf_error())); 279 } 280 281 if (enable > 0) { 282 if (smf_enable_instance(RCAP_FMRI, no_starting_stopping > 0 283 ? SMF_AT_NEXT_BOOT : 0) != 0) 284 die(gettext("cannot enable service: %s\n"), 285 scf_strerror(scf_error())); 286 } 287 288 if (rcfg_read(&conf, NULL) != E_SUCCESS) { 289 /* 290 * If instance is enabled, put it in maintenance since we 291 * failed to read configuration from the repository or 292 * create statistics file. 293 */ 294 if (strcmp(smf_get_state(RCAP_FMRI), 295 SCF_STATE_STRING_DISABLED) != 0) 296 (void) smf_maintain_instance(RCAP_FMRI, 0); 297 298 die(gettext("resource caps not configured\n")); 299 } else { 300 /* Done reading configuration */ 301 if (strcmp(conf.rcfg_mode_name, "project") != 0) { 302 warn(gettext("%s mode specification ignored -- using" 303 " project mode\n"), conf.rcfg_mode_name); 304 conf.rcfg_mode_name = "project"; 305 conf.rcfg_mode = rctype_project; 306 } 307 } 308 309 if (refresh) 310 return (update_zone_mcap(zonename, maxrss)); 311 312 if (modified) { 313 if (pressure >= 0) 314 conf.rcfg_memory_cap_enforcement_pressure = pressure; 315 if (config_interval >= 0) 316 conf.rcfg_reconfiguration_interval = config_interval; 317 if (scan_interval >= 0) 318 conf.rcfg_proc_walk_interval = scan_interval; 319 if (report_interval >= 0) 320 conf.rcfg_report_interval = report_interval; 321 if (sample_interval >= 0) 322 conf.rcfg_rss_sample_interval = sample_interval; 323 324 /* 325 * Modify configuration with the new parameter(s). The 326 * function will exit if it fails. 327 */ 328 if ((modify_config(&conf)) != 0) 329 die(gettext("Error updating repository \n")); 330 331 if (smf_refresh_instance(RCAP_FMRI) != 0) 332 die(gettext("cannot refresh service: %s\n"), 333 scf_strerror(scf_error())); 334 } 335 336 /* 337 * Display current configuration 338 */ 339 print_state(); 340 return (E_SUCCESS); 341 } 342