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--- old/usr/src/cmd/rcap/rcapadm/rcapadm.c
+++ new/usr/src/cmd/rcap/rcapadm/rcapadm.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright (c) 2011, Joyent, Inc. All rights reserved.
25 25 */
26 26
27 27 #include <sys/types.h>
28 28 #include <sys/stat.h>
29 29 #include <sys/wait.h>
30 30 #include <fcntl.h>
31 31 #include <errno.h>
32 32 #include <signal.h>
33 33 #include <stdio.h>
34 34 #include <stdlib.h>
35 35 #include <strings.h>
36 36 #include <unistd.h>
37 37 #include <libscf.h>
38 38 #include <libscf_priv.h>
39 39 #include <libintl.h>
40 40 #include <locale.h>
41 41 #include <zone.h>
42 42 #include <libzonecfg.h>
43 43
44 44 #include "utils.h"
45 45 #include "rcapd.h"
46 46 #include "rcapd_conf.h"
47 47 #include "rcapd_stat.h"
48 48
49 49 static void
50 50 usage()
51 51 {
52 52 (void) fprintf(stderr,
53 53 gettext("usage: rcapadm\n"
54 54 " [-E|-D] "
55 55 "# enable/disable rcapd\n"
56 56 " [-n] "
57 57 "# don't start/stop rcapd\n"
58 58 " [-i <scan|sample|report|config>=value] "
59 59 "# set intervals\n"
60 60 " [-c <percent>] "
61 61 "# set memory cap\n"
62 62 " "
63 63 "# enforcement threshold\n"
64 64 " [-z <zonename> -m <max-rss>] "
65 65 "# update zone memory cap\n"));
66 66 exit(E_USAGE);
67 67 }
68 68
69 69 static rcfg_t conf;
70 70 static int enable = -1;
71 71 static int disable = -1;
72 72 static int pressure = -1;
73 73 static int no_starting_stopping = -1;
74 74 static int scan_interval = -1;
75 75 static int report_interval = -1;
76 76 static int config_interval = -1;
77 77 static int sample_interval = -1;
78 78
79 79 static char *subopt_v[] = {
80 80 "scan",
81 81 "sample",
82 82 "report",
83 83 "config",
84 84 NULL
85 85 };
86 86
87 87 typedef enum {
88 88 OPT_SCAN = 0,
89 89 OPT_SAMPLE,
90 90 OPT_REPORT,
91 91 OPT_CONFIG
92 92 } subopt_idx_t;
93 93
94 94 static void
95 95 print_state(void)
96 96 {
97 97 scf_simple_prop_t *persistent_prop = NULL;
98 98 scf_simple_prop_t *temporary_prop = NULL;
99 99 uint8_t *persistent = NULL;
100 100 uint8_t *temporary = NULL;
101 101 scf_handle_t *h;
102 102 /* LINTED: conditionally assigned and used in function */
103 103 ssize_t numvals;
104 104
105 105 if ((h = scf_handle_create(SCF_VERSION)) == NULL ||
106 106 scf_handle_bind(h) != 0)
107 107 goto out;
108 108
109 109 if ((persistent_prop = scf_simple_prop_get(h, RCAP_FMRI,
110 110 SCF_PG_GENERAL, SCF_PROPERTY_ENABLED)) != NULL && (numvals =
111 111 scf_simple_prop_numvalues(persistent_prop)) > 0)
112 112 persistent = scf_simple_prop_next_boolean(persistent_prop);
113 113
114 114 if ((temporary_prop = scf_simple_prop_get(h, RCAP_FMRI,
115 115 SCF_PG_GENERAL_OVR, SCF_PROPERTY_ENABLED)) != NULL && (numvals =
116 116 scf_simple_prop_numvalues(temporary_prop)) > 0)
117 117 temporary = scf_simple_prop_next_boolean(temporary_prop);
118 118
119 119 out:
120 120 if (!persistent)
121 121 (void) printf(gettext(" "
122 122 "state: unknown"));
123 123 else if (temporary && *temporary != *persistent)
124 124 (void) printf(gettext(" "
125 125 "state: %s (%s at next boot)\n"), *temporary ?
126 126 gettext("enabled") : gettext("disabled"), *persistent ?
127 127 gettext("enabled") : gettext("disabled"));
128 128 else
129 129 (void) printf(gettext(" "
130 130 "state: %s\n"), *persistent ? gettext("enabled") :
131 131 gettext("disabled"));
132 132
133 133 (void) printf(gettext(" memory cap enforcement"
134 134 " threshold: %d%%\n"), conf.rcfg_memory_cap_enforcement_pressure);
135 135 (void) printf(gettext(" process scan rate"
136 136 " (sec): %d\n"), conf.rcfg_proc_walk_interval);
137 137 (void) printf(gettext(" reconfiguration rate"
138 138 " (sec): %d\n"), conf.rcfg_reconfiguration_interval);
139 139 (void) printf(gettext(" report rate"
140 140 " (sec): %d\n"), conf.rcfg_report_interval);
141 141 (void) printf(gettext(" RSS sampling rate"
142 142 " (sec): %d\n"), conf.rcfg_rss_sample_interval);
143 143
144 144 scf_simple_prop_free(temporary_prop);
145 145 scf_simple_prop_free(persistent_prop);
146 146 scf_handle_destroy(h);
147 147 }
148 148
149 149 static int
150 150 set_zone_cap(char *zonename, uint64_t mcap)
151 151 {
152 152 char cmd[128 + ZONENAME_MAX];
153 153
154 154 (void) snprintf(cmd, sizeof (cmd), "/usr/bin/prctl -r "
155 155 "-n zone.max-physical-memory -v %llu -i zone %s", mcap, zonename);
156 156 return (system(cmd));
157 157 }
158 158
159 159 /*
160 160 * Update the in-kernel memory cap for the specified zone.
161 161 */
162 162 static int
163 163 update_zone_mcap(char *zonename, char *maxrss)
164 164 {
165 165 uint64_t num;
166 166
167 167 if (getzoneid() != GLOBAL_ZONEID || zonecfg_in_alt_root())
168 168 return (E_SUCCESS);
169 169
170 170 /* get the running zone from the kernel */
171 171 if (getzoneidbyname(zonename) == -1) {
172 172 (void) fprintf(stderr, gettext("zone '%s' must be running\n"),
173 173 zonename);
174 174 return (E_ERROR);
175 175 }
176 176
177 177 if (zonecfg_str_to_bytes(maxrss, &num) == -1) {
178 178 (void) fprintf(stderr, gettext("invalid max-rss value\n"));
179 179 return (E_ERROR);
180 180 }
181 181
182 182 if (set_zone_cap(zonename, num) == -1) {
183 183 (void) fprintf(stderr, gettext("could not set memory "
184 184 "cap for zone '%s'\n"), zonename);
185 185 return (E_ERROR);
186 186 }
187 187
188 188 return (E_SUCCESS);
189 189 }
190 190
191 191 int
192 192 main(int argc, char *argv[])
193 193 {
194 194 char *subopts, *optval;
195 195 int modified = 0;
196 196 boolean_t refresh = B_FALSE;
197 197 int opt;
198 198 char *zonename;
199 199 char *maxrss = NULL;
200 200
201 201 (void) setpname("rcapadm");
202 202 (void) setlocale(LC_ALL, "");
203 203 (void) textdomain(TEXT_DOMAIN);
204 204
205 205 while ((opt = getopt(argc, argv, "DEc:i:m:nz:")) != EOF) {
206 206 switch (opt) {
207 207 case 'n':
208 208 no_starting_stopping = 1;
209 209 break;
210 210 case 'c':
211 211 if ((pressure = xatoi(optarg)) < 0 ||
212 212 pressure > 100 ||
213 213 errno == EINVAL)
214 214 usage();
215 215 modified++;
216 216 break;
217 217 case 'E':
218 218 enable = 1;
219 219 disable = 0;
220 220 break;
221 221 case 'D':
222 222 disable = 1;
223 223 enable = 0;
224 224 break;
225 225 case 'i':
226 226 subopts = optarg;
227 227 while (*subopts != '\0') {
228 228 switch (getsubopt(&subopts, subopt_v,
229 229 &optval)) {
230 230 case OPT_SCAN:
231 231 if (optval == NULL ||
232 232 (scan_interval =
233 233 xatoi(optval)) <= 0)
234 234 usage();
235 235 break;
236 236 case OPT_SAMPLE:
237 237 if (optval == NULL ||
238 238 (sample_interval =
239 239 xatoi(optval)) <= 0)
240 240 usage();
241 241 break;
242 242 case OPT_REPORT:
243 243 if (optval == NULL ||
244 244 (report_interval =
245 245 xatoi(optval)) < 0)
246 246 usage();
247 247 break;
248 248 case OPT_CONFIG:
249 249 if (optval == NULL ||
250 250 (config_interval =
251 251 xatoi(optval)) < 0)
252 252 usage();
253 253 break;
254 254 default:
255 255 usage();
256 256 }
257 257 }
258 258 modified++;
259 259 break;
260 260 case 'm':
261 261 maxrss = optarg;
262 262 break;
263 263 case 'z':
264 264 refresh = B_TRUE;
265 265 zonename = optarg;
266 266 break;
267 267 default:
268 268 usage();
269 269 }
270 270 }
271 271
272 272 /* the -z & -m options must be used together */
273 273 if (argc > optind || (refresh && maxrss == NULL) ||
274 274 (!refresh && maxrss != NULL))
275 275 usage();
276 276
277 277 if (refresh && (no_starting_stopping > 0 || modified))
278 278 usage();
279 279
280 280 /*
281 281 * disable/enable before reading configuration from the repository
282 282 * which may fail and prevents the disabling/enabling to complete.
283 283 */
284 284 if (disable > 0) {
285 285 if (smf_disable_instance(RCAP_FMRI, no_starting_stopping > 0
286 286 ? SMF_AT_NEXT_BOOT : 0) != 0)
287 287 die(gettext("cannot disable service: %s\n"),
288 288 scf_strerror(scf_error()));
289 289 }
290 290
291 291 if (enable > 0) {
292 292 if (smf_enable_instance(RCAP_FMRI, no_starting_stopping > 0
293 293 ? SMF_AT_NEXT_BOOT : 0) != 0)
294 294 die(gettext("cannot enable service: %s\n"),
295 295 scf_strerror(scf_error()));
296 296 }
297 297
298 298 if (rcfg_read(&conf, NULL) != E_SUCCESS) {
299 299 /*
300 300 * If instance is enabled, put it in maintenance since we
301 301 * failed to read configuration from the repository or
302 302 * create statistics file.
303 303 */
304 304 if (strcmp(smf_get_state(RCAP_FMRI),
305 305 SCF_STATE_STRING_DISABLED) != 0)
306 306 (void) smf_maintain_instance(RCAP_FMRI, 0);
307 307
308 308 die(gettext("resource caps not configured\n"));
309 309 } else {
310 310 /* Done reading configuration */
311 311 if (strcmp(conf.rcfg_mode_name, "project") != 0) {
312 312 warn(gettext("%s mode specification ignored -- using"
313 313 " project mode\n"), conf.rcfg_mode_name);
314 314 conf.rcfg_mode_name = "project";
315 315 conf.rcfg_mode = rctype_project;
316 316 }
317 317 }
318 318
319 319 if (refresh)
320 320 return (update_zone_mcap(zonename, maxrss));
321 321
322 322 if (modified) {
323 323 if (pressure >= 0)
324 324 conf.rcfg_memory_cap_enforcement_pressure = pressure;
325 325 if (config_interval >= 0)
326 326 conf.rcfg_reconfiguration_interval = config_interval;
327 327 if (scan_interval >= 0)
328 328 conf.rcfg_proc_walk_interval = scan_interval;
329 329 if (report_interval >= 0)
330 330 conf.rcfg_report_interval = report_interval;
331 331 if (sample_interval >= 0)
332 332 conf.rcfg_rss_sample_interval = sample_interval;
333 333
334 334 /*
335 335 * Modify configuration with the new parameter(s). The
336 336 * function will exit if it fails.
337 337 */
338 338 if ((modify_config(&conf)) != 0)
339 339 die(gettext("Error updating repository \n"));
340 340
341 341 if (smf_refresh_instance(RCAP_FMRI) != 0)
342 342 die(gettext("cannot refresh service: %s\n"),
343 343 scf_strerror(scf_error()));
344 344 }
345 345
346 346 /*
347 347 * Display current configuration
348 348 */
349 349 print_state();
350 350 return (E_SUCCESS);
351 351 }
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