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