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dmake: do not set MAKEFLAGS=k
[unleashed/tickless.git] / usr / src / cmd / dispadmin / iadispadmin.c
blobaa0b39d05f8a6df7c77fbc567889fd222e1f07d6
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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36 #include <errno.h>
37 #include <sys/types.h>
38 #include <sys/priocntl.h>
39 #include <sys/iapriocntl.h>
40 #include <sys/param.h>
41 #include <sys/ia.h>
42
43 #include "dispadmin.h"
44
45 /*
46 * This file contains the class specific code implementing
47 * the interactive dispadmin sub-command.
48 */
49
50 #define BASENMSZ 16
51
52 extern char *basename();
53
54 static void get_iadptbl(), set_iadptbl();
55
56 static char usage[] =
57 "usage: dispadmin -l\n\
58 dispadmin -c IA -g [-r res]\n\
59 dispadmin -c IA -s infile\n";
60
61 static char basenm[BASENMSZ];
62 static char cmdpath[256];
63
64
65 int
66 main(int argc, char **argv)
67 {
68 extern char *optarg;
69
70 int c;
71 int lflag, gflag, rflag, sflag;
72 ulong_t res;
73 char *infile;
74
75 (void) strcpy(cmdpath, argv[0]);
76 (void) strcpy(basenm, basename(argv[0]));
77 lflag = gflag = rflag = sflag = 0;
78 while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
79 switch (c) {
80
81 case 'l':
82 lflag++;
83 break;
84
85 case 'c':
86 if (strcmp(optarg, "IA") != 0)
87 fatalerr("error: %s executed for %s class, "
88 "%s is actually sub-command for IA class\n",
89 cmdpath, optarg, cmdpath);
90 break;
91
92 case 'g':
93 gflag++;
94 break;
95
96 case 'r':
97 rflag++;
98 res = strtoul(optarg, (char **)NULL, 10);
99 break;
100
101 case 's':
102 sflag++;
103 infile = optarg;
104 break;
105
106 case '?':
107 fatalerr(usage);
108
109 default:
110 break;
111 }
112 }
113
114 if (lflag) {
115 if (gflag || rflag || sflag)
116 fatalerr(usage);
117
118 (void) printf("IA\t(Interactive)\n");
119 return (0);
120
121 } else if (gflag) {
122 if (lflag || sflag)
123 fatalerr(usage);
124
125 if (rflag == 0)
126 res = 1000;
127
128 get_iadptbl(res);
129 return (0);
130
131 } else if (sflag) {
132 if (lflag || gflag || rflag)
133 fatalerr(usage);
134
135 set_iadptbl(infile);
136 return (0);
137
138 } else {
139 fatalerr(usage);
140 }
141 return (1);
142 }
143
144
145 /*
146 * Retrieve the current ia_dptbl from memory, convert the time quantum
147 * values to the resolution specified by res and write the table to stdout.
148 */
149 static void
150 get_iadptbl(ulong_t res)
151 {
152 int i;
153 int iadpsz;
154 pcinfo_t pcinfo;
155 pcadmin_t pcadmin;
156 iaadmin_t iaadmin;
157 iadpent_t *ia_dptbl;
158 hrtimer_t hrtime;
159
160 (void) strcpy(pcinfo.pc_clname, "IA");
161 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
162 fatalerr("%s: Can't get IA class ID, priocntl system "
163 "call failed with errno %d\n",
164 basenm, errno);
165
166 pcadmin.pc_cid = pcinfo.pc_cid;
167 pcadmin.pc_cladmin = (char *)&iaadmin;
168 iaadmin.ia_cmd = IA_GETDPSIZE;
169
170 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
171 fatalerr("%s: Can't get ia_dptbl size, priocntl system "
172 "call failed with errno %d\n",
173 basenm, errno);
174
175 iadpsz = iaadmin.ia_ndpents * sizeof (iadpent_t);
176 if ((ia_dptbl = (iadpent_t *)malloc(iadpsz)) == NULL)
177 fatalerr("%s: Can't allocate memory for ia_dptbl\n", basenm);
178
179 iaadmin.ia_dpents = ia_dptbl;
180
181 iaadmin.ia_cmd = IA_GETDPTBL;
182 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
183 fatalerr("%s: Can't get ia_dptbl, priocntl system call "
184 "call failed with errno %d\n",
185 basenm, errno);
186
187 (void) printf("# Interactive Dispatcher Configuration\n");
188 (void) printf("RES=%ld\n\n", res);
189 (void) printf("# ia_quantum ia_tqexp ia_slpret ia_maxwait ia_lwait \
190 PRIORITY LEVEL\n");
191
192 for (i = 0; i < iaadmin.ia_ndpents; i++) {
193 if (res != HZ) {
194 hrtime.hrt_secs = 0;
195 hrtime.hrt_rem = ia_dptbl[i].ia_quantum;
196 hrtime.hrt_res = HZ;
197 if (_hrtnewres(&hrtime, res, HRT_RNDUP) == -1)
198 fatalerr("%s: Can't convert to requested "
199 "resolution\n", basenm);
200 if ((ia_dptbl[i].ia_quantum = hrtconvert(&hrtime))
201 == -1)
202 fatalerr("%s: Can't express time quantum in "
203 "requested resolution,\n"
204 "try coarser resolution\n",
205 basenm);
206 }
207 (void) printf("%10ld%10d%10d%12d%10d # %3d\n",
208 ia_dptbl[i].ia_quantum, ia_dptbl[i].ia_tqexp,
209 ia_dptbl[i].ia_slpret, ia_dptbl[i].ia_maxwait,
210 ia_dptbl[i].ia_lwait, i);
211 }
212 }
213
214
215 /*
216 * Read the ia_dptbl values from infile, convert the time quantum values
217 * to HZ resolution, do a little sanity checking and overwrite the table
218 * in memory with the values from the file.
219 */
220 static void
221 set_iadptbl(infile)
222 char *infile;
223 {
224 int i;
225 int niadpents;
226 char *tokp;
227 pcinfo_t pcinfo;
228 pcadmin_t pcadmin;
229 iaadmin_t iaadmin;
230 iadpent_t *ia_dptbl;
231 int linenum;
232 ulong_t res;
233 hrtimer_t hrtime;
234 FILE *fp;
235 char buf[512];
236 int wslength;
237
238 (void) strcpy(pcinfo.pc_clname, "IA");
239 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
240 fatalerr("%s: Can't get IA class ID, priocntl system "
241 "call failed with errno %d\n", basenm, errno);
242
243 pcadmin.pc_cid = pcinfo.pc_cid;
244 pcadmin.pc_cladmin = (char *)&iaadmin;
245 iaadmin.ia_cmd = IA_GETDPSIZE;
246
247 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
248 fatalerr("%s: Can't get ia_dptbl size, priocntl system "
249 "call failed with errno %d\n", basenm, errno);
250
251 niadpents = iaadmin.ia_ndpents;
252 if ((ia_dptbl =
253 (iadpent_t *)malloc(niadpents * sizeof (iadpent_t))) == NULL)
254 fatalerr("%s: Can't allocate memory for ia_dptbl\n", basenm);
255
256 if ((fp = fopen(infile, "r")) == NULL)
257 fatalerr("%s: Can't open %s for input\n", basenm, infile);
258
259 linenum = 0;
260
261 /*
262 * Find the first non-blank, non-comment line. A comment line
263 * is any line with '#' as the first non-white-space character.
264 */
265 do {
266 if (fgets(buf, sizeof (buf), fp) == NULL)
267 fatalerr("%s: Too few lines in input table\n", basenm);
268 linenum++;
269 } while (buf[0] == '#' || buf[0] == '\0' ||
270 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
271 strchr(buf, '#') == buf + wslength);
272
273 if ((tokp = strtok(buf, " \t")) == NULL)
274 fatalerr("%s: Bad RES specification, line %d of input file\n",
275 basenm, linenum);
276 if ((int)strlen(tokp) > 4) {
277 if (strncmp(tokp, "RES=", 4) != 0)
278 fatalerr("%s: Bad RES specification, \
279 line %d of input file\n", basenm, linenum);
280 if (tokp[4] == '-')
281 fatalerr("%s: Bad RES specification, \
282 line %d of input file\n", basenm, linenum);
283 res = strtoul(&tokp[4], (char **)NULL, 10);
284 } else if (strlen(tokp) == 4) {
285 if (strcmp(tokp, "RES=") != 0)
286 fatalerr("%s: Bad RES specification, \
287 line %d of input file\n", basenm, linenum);
288 if ((tokp = strtok(NULL, " \t")) == NULL)
289 fatalerr("%s: Bad RES specification, \
290 line %d of input file\n", basenm, linenum);
291 if (tokp[0] == '-')
292 fatalerr("%s: Bad RES specification, \
293 line %d of input file\n", basenm, linenum);
294 res = strtoul(tokp, (char **)NULL, 10);
295 } else if (strlen(tokp) == 3) {
296 if (strcmp(tokp, "RES") != 0)
297 fatalerr("%s: Bad RES specification, \
298 line %d of input file\n", basenm, linenum);
299 if ((tokp = strtok(NULL, " \t")) == NULL)
300 fatalerr("%s: Bad RES specification, \
301 line %d of input file\n", basenm, linenum);
302 if ((int)strlen(tokp) > 1) {
303 if (strncmp(tokp, "=", 1) != 0)
304 fatalerr("%s: Bad RES specification, \
305 line %d of input file\n", basenm, linenum);
306 if (tokp[1] == '-')
307 fatalerr("%s: Bad RES specification, \
308 line %d of input file\n", basenm, linenum);
309 res = strtoul(&tokp[1], (char **)NULL, 10);
310 } else if (strlen(tokp) == 1) {
311 if ((tokp = strtok(NULL, " \t")) == NULL)
312 fatalerr("%s: Bad RES specification, \
313 line %d of input file\n", basenm, linenum);
314 if (tokp[0] == '-')
315 fatalerr("%s: Bad RES specification, \
316 line %d of input file\n", basenm, linenum);
317 res = strtoul(tokp, (char **)NULL, 10);
318 }
319 } else {
320 fatalerr("%s: Bad RES specification, line %d of input file\n",
321 basenm, linenum);
322 }
323
324 /*
325 * The remainder of the input file should contain exactly enough
326 * non-blank, non-comment lines to fill the table (ia_ndpents lines).
327 * We assume that any non-blank, non-comment line is data for the
328 * table and fail if we find more or less than we need.
329 */
330 for (i = 0; i < iaadmin.ia_ndpents; i++) {
331
332 /*
333 * Get the next non-blank, non-comment line.
334 */
335 do {
336 if (fgets(buf, sizeof (buf), fp) == NULL)
337 fatalerr("%s: Too few lines in input table\n",
338 basenm);
339 linenum++;
340 } while (buf[0] == '#' || buf[0] == '\0' ||
341 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
342 strchr(buf, '#') == buf + wslength);
343
344 if ((tokp = strtok(buf, " \t")) == NULL)
345 fatalerr("%s: Too few values, line %d of input file\n",
346 basenm, linenum);
347
348 if (res != HZ) {
349 hrtime.hrt_secs = 0;
350 hrtime.hrt_rem = atol(tokp);
351 hrtime.hrt_res = res;
352 if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
353 fatalerr("%s: Can't convert specified \
354 resolution to ticks\n", basenm);
355 if ((ia_dptbl[i].ia_quantum = hrtconvert(&hrtime))
356 == -1)
357 fatalerr("%s: ia_quantum value out of "
358 "valid range; line %d of input,\n"
359 "table not overwritten\n",
360 basenm, linenum);
361 } else {
362 ia_dptbl[i].ia_quantum = atol(tokp);
363 }
364 if (ia_dptbl[i].ia_quantum <= 0)
365 fatalerr("%s: ia_quantum value out of valid range; "
366 "line %d of input,\ntable not overwritten\n",
367 basenm, linenum);
368
369 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
370 fatalerr("%s: Too few values, line %d of input file\n",
371 basenm, linenum);
372 ia_dptbl[i].ia_tqexp = (short)atoi(tokp);
373 if (ia_dptbl[i].ia_tqexp < 0 ||
374 ia_dptbl[i].ia_tqexp > iaadmin.ia_ndpents)
375 fatalerr("%s: ia_tqexp value out of valid range; "
376 "line %d of input,\ntable not overwritten\n",
377 basenm, linenum);
378
379 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
380 fatalerr("%s: Too few values, line %d of input file\n",
381 basenm, linenum);
382 ia_dptbl[i].ia_slpret = (short)atoi(tokp);
383 if (ia_dptbl[i].ia_slpret < 0 ||
384 ia_dptbl[i].ia_slpret > iaadmin.ia_ndpents)
385 fatalerr("%s: ia_slpret value out of valid range; "
386 "line %d of input,\ntable not overwritten\n",
387 basenm, linenum);
388
389 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
390 fatalerr("%s: Too few values, line %d of input file\n",
391 basenm, linenum);
392 ia_dptbl[i].ia_maxwait = (short)atoi(tokp);
393 if (ia_dptbl[i].ia_maxwait < 0)
394 fatalerr("%s: ia_maxwait value out of valid range; "
395 "line %d of input,\ntable not overwritten\n",
396 basenm, linenum);
397
398 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
399 fatalerr("%s: Too few values, line %d of input file\n",
400 basenm, linenum);
401 ia_dptbl[i].ia_lwait = (short)atoi(tokp);
402 if (ia_dptbl[i].ia_lwait < 0 ||
403 ia_dptbl[i].ia_lwait > iaadmin.ia_ndpents)
404 fatalerr("%s: ia_lwait value out of valid range; "
405 "line %d of input,\ntable not overwritten\n",
406 basenm, linenum);
407
408 if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#')
409 fatalerr("%s: Too many values, line %d of input file\n",
410 basenm, linenum);
411 }
412
413 /*
414 * We've read enough lines to fill the table. We fail
415 * if the input file contains any more.
416 */
417 while (fgets(buf, sizeof (buf), fp) != NULL) {
418 if (buf[0] != '#' && buf[0] != '\0' &&
419 (wslength = strspn(buf, " \t\n")) != strlen(buf) &&
420 strchr(buf, '#') != buf + wslength)
421 fatalerr("%s: Too many lines in input table\n",
422 basenm);
423 }
424
425 iaadmin.ia_dpents = ia_dptbl;
426 iaadmin.ia_cmd = IA_SETDPTBL;
427 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
428 fatalerr("%s: Can't set ia_dptbl, priocntl system call \
429 failed with errno %d\n", basenm, errno);
430 }
unleashed repo fork