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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / cmd / dispadmin / tsdispadmin.c
blob83bb6dd2c33a35581e478a986a7b12fc40d66d32
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
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37 #include <errno.h>
38 #include <sys/types.h>
39 #include <sys/priocntl.h>
40 #include <sys/tspriocntl.h>
41 #include <sys/param.h>
42 #include <sys/ts.h>
43
44 #include "dispadmin.h"
45
46 /*
47 * This file contains the class specific code implementing
48 * the time-sharing dispadmin sub-command.
49 */
50
51 #define BASENMSZ 16
52
53 extern char *basename();
54
55 static void get_tsdptbl(), set_tsdptbl();
56
57 static char usage[] =
58 "usage: dispadmin -l\n\
59 dispadmin -c TS -g [-r res]\n\
60 dispadmin -c TS -s infile\n";
61
62 static char basenm[BASENMSZ];
63 static char cmdpath[256];
64
65
66 int
67 main(int argc, char **argv)
68 {
69 extern char *optarg;
70
71 int c;
72 int lflag, gflag, rflag, sflag;
73 ulong_t res;
74 char *infile;
75
76 (void) strcpy(cmdpath, argv[0]);
77 (void) strcpy(basenm, basename(argv[0]));
78 lflag = gflag = rflag = sflag = 0;
79 while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
80 switch (c) {
81
82 case 'l':
83 lflag++;
84 break;
85
86 case 'c':
87 if (strcmp(optarg, "TS") != 0)
88 fatalerr("error: %s executed for %s class, \
89 %s is actually sub-command for TS class\n", 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("TS\t(Time Sharing)\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_tsdptbl(res);
129 return (0);
130
131 } else if (sflag) {
132 if (lflag || gflag || rflag)
133 fatalerr(usage);
134
135 set_tsdptbl(infile);
136 return (0);
137
138 } else {
139 fatalerr(usage);
140 }
141 return (1);
142 }
143
144
145 /*
146 * Retrieve the current ts_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_tsdptbl(ulong_t res)
151 {
152 int i;
153 int tsdpsz;
154 pcinfo_t pcinfo;
155 pcadmin_t pcadmin;
156 tsadmin_t tsadmin;
157 tsdpent_t *ts_dptbl;
158 hrtimer_t hrtime;
159
160 (void) strcpy(pcinfo.pc_clname, "TS");
161 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
162 fatalerr("%s: Can't get TS class ID, priocntl system \
163 call failed with errno %d\n", basenm, errno);
164
165 pcadmin.pc_cid = pcinfo.pc_cid;
166 pcadmin.pc_cladmin = (char *)&tsadmin;
167 tsadmin.ts_cmd = TS_GETDPSIZE;
168
169 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
170 fatalerr("%s: Can't get ts_dptbl size, priocntl system \
171 call failed with errno %d\n", basenm, errno);
172
173 tsdpsz = tsadmin.ts_ndpents * sizeof (tsdpent_t);
174 if ((ts_dptbl = (tsdpent_t *)malloc(tsdpsz)) == NULL)
175 fatalerr("%s: Can't allocate memory for ts_dptbl\n", basenm);
176
177 tsadmin.ts_dpents = ts_dptbl;
178
179 tsadmin.ts_cmd = TS_GETDPTBL;
180 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
181 fatalerr("%s: Can't get ts_dptbl, priocntl system call \
182 call failed with errno %d\n", basenm, errno);
183
184 (void) printf("# Time Sharing Dispatcher Configuration\n");
185 (void) printf("RES=%ld\n\n", res);
186 (void) printf("# ts_quantum ts_tqexp ts_slpret ts_maxwait ts_lwait \
187 PRIORITY LEVEL\n");
188
189 for (i = 0; i < tsadmin.ts_ndpents; i++) {
190 if (res != HZ) {
191 hrtime.hrt_secs = 0;
192 hrtime.hrt_rem = ts_dptbl[i].ts_quantum;
193 hrtime.hrt_res = HZ;
194 if (_hrtnewres(&hrtime, res, HRT_RNDUP) == -1)
195 fatalerr("%s: Can't convert to requested \
196 resolution\n", basenm);
197 if ((ts_dptbl[i].ts_quantum = hrtconvert(&hrtime))
198 == -1)
199 fatalerr("%s: Can't express time quantum in "
200 "requested resolution,\n"
201 "try coarser resolution\n", basenm);
202 }
203 (void) printf("%10d%10d%10d%12d%10d # %3d\n",
204 ts_dptbl[i].ts_quantum, ts_dptbl[i].ts_tqexp,
205 ts_dptbl[i].ts_slpret, ts_dptbl[i].ts_maxwait,
206 ts_dptbl[i].ts_lwait, i);
207 }
208 }
209
210
211 /*
212 * Read the ts_dptbl values from infile, convert the time quantum values
213 * to HZ resolution, do a little sanity checking and overwrite the table
214 * in memory with the values from the file.
215 */
216 static void
217 set_tsdptbl(infile)
218 char *infile;
219 {
220 int i;
221 int ntsdpents;
222 char *tokp;
223 pcinfo_t pcinfo;
224 pcadmin_t pcadmin;
225 tsadmin_t tsadmin;
226 tsdpent_t *ts_dptbl;
227 int linenum;
228 ulong_t res;
229 hrtimer_t hrtime;
230 FILE *fp;
231 char buf[512];
232 int wslength;
233
234 (void) strcpy(pcinfo.pc_clname, "TS");
235 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
236 fatalerr("%s: Can't get TS class ID, priocntl system \
237 call failed with errno %d\n", basenm, errno);
238
239 pcadmin.pc_cid = pcinfo.pc_cid;
240 pcadmin.pc_cladmin = (char *)&tsadmin;
241 tsadmin.ts_cmd = TS_GETDPSIZE;
242
243 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
244 fatalerr("%s: Can't get ts_dptbl size, priocntl system \
245 call failed with errno %d\n", basenm, errno);
246
247 ntsdpents = tsadmin.ts_ndpents;
248 if ((ts_dptbl =
249 (tsdpent_t *)malloc(ntsdpents * sizeof (tsdpent_t))) == NULL)
250 fatalerr("%s: Can't allocate memory for ts_dptbl\n", basenm);
251
252 if ((fp = fopen(infile, "r")) == NULL)
253 fatalerr("%s: Can't open %s for input\n", basenm, infile);
254
255 linenum = 0;
256
257 /*
258 * Find the first non-blank, non-comment line. A comment line
259 * is any line with '#' as the first non-white-space character.
260 */
261 do {
262 if (fgets(buf, sizeof (buf), fp) == NULL)
263 fatalerr("%s: Too few lines in input table\n", basenm);
264 linenum++;
265 } while (buf[0] == '#' || buf[0] == '\0' ||
266 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
267 strchr(buf, '#') == buf + wslength);
268
269 if ((tokp = strtok(buf, " \t")) == NULL)
270 fatalerr("%s: Bad RES specification, line %d of input file\n",
271 basenm, linenum);
272 if ((int)strlen(tokp) > 4) {
273 if (strncmp(tokp, "RES=", 4) != 0)
274 fatalerr("%s: Bad RES specification, \
275 line %d of input file\n", basenm, linenum);
276 if (tokp[4] == '-')
277 fatalerr("%s: Bad RES specification, \
278 line %d of input file\n", basenm, linenum);
279 res = strtoul(&tokp[4], (char **)NULL, 10);
280 } else if (strlen(tokp) == 4) {
281 if (strcmp(tokp, "RES=") != 0)
282 fatalerr("%s: Bad RES specification, \
283 line %d of input file\n", basenm, linenum);
284 if ((tokp = strtok(NULL, " \t")) == NULL)
285 fatalerr("%s: Bad RES specification, \
286 line %d of input file\n", basenm, linenum);
287 if (tokp[0] == '-')
288 fatalerr("%s: Bad RES specification, \
289 line %d of input file\n", basenm, linenum);
290 res = strtoul(tokp, (char **)NULL, 10);
291 } else if (strlen(tokp) == 3) {
292 if (strcmp(tokp, "RES") != 0)
293 fatalerr("%s: Bad RES specification, \
294 line %d of input file\n", basenm, linenum);
295 if ((tokp = strtok(NULL, " \t")) == NULL)
296 fatalerr("%s: Bad RES specification, \
297 line %d of input file\n", basenm, linenum);
298 if ((int)strlen(tokp) > 1) {
299 if (strncmp(tokp, "=", 1) != 0)
300 fatalerr("%s: Bad RES specification, \
301 line %d of input file\n", basenm, linenum);
302 if (tokp[1] == '-')
303 fatalerr("%s: Bad RES specification, \
304 line %d of input file\n", basenm, linenum);
305 res = strtoul(&tokp[1], (char **)NULL, 10);
306 } else if (strlen(tokp) == 1) {
307 if ((tokp = strtok(NULL, " \t")) == NULL)
308 fatalerr("%s: Bad RES specification, \
309 line %d of input file\n", basenm, linenum);
310 if (tokp[0] == '-')
311 fatalerr("%s: Bad RES specification, \
312 line %d of input file\n", basenm, linenum);
313 res = strtoul(tokp, (char **)NULL, 10);
314 }
315 } else {
316 fatalerr("%s: Bad RES specification, line %d of input file\n",
317 basenm, linenum);
318 }
319
320 /*
321 * The remainder of the input file should contain exactly enough
322 * non-blank, non-comment lines to fill the table (ts_ndpents lines).
323 * We assume that any non-blank, non-comment line is data for the
324 * table and fail if we find more or less than we need.
325 */
326 for (i = 0; i < tsadmin.ts_ndpents; i++) {
327
328 /*
329 * Get the next non-blank, non-comment line.
330 */
331 do {
332 if (fgets(buf, sizeof (buf), fp) == NULL)
333 fatalerr("%s: Too few lines in input table\n",
334 basenm);
335 linenum++;
336 } while (buf[0] == '#' || buf[0] == '\0' ||
337 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
338 strchr(buf, '#') == buf + wslength);
339
340 if ((tokp = strtok(buf, " \t")) == NULL)
341 fatalerr("%s: Too few values, line %d of input file\n",
342 basenm, linenum);
343
344 if (res != HZ) {
345 hrtime.hrt_secs = 0;
346 hrtime.hrt_rem = atol(tokp);
347 hrtime.hrt_res = res;
348 if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
349 fatalerr("%s: Can't convert specified "
350 "resolution to ticks\n", basenm);
351 if ((ts_dptbl[i].ts_quantum = hrtconvert(&hrtime))
352 == -1)
353 fatalerr("%s: ts_quantum value out of "
354 "valid range; line %d of input,\n"
355 "table not overwritten\n",
356 basenm, linenum);
357 } else {
358 ts_dptbl[i].ts_quantum = atol(tokp);
359 }
360 if (ts_dptbl[i].ts_quantum <= 0)
361 fatalerr("%s: ts_quantum value out of valid range; "
362 "line %d of input,\ntable not overwritten\n",
363 basenm, linenum);
364
365 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
366 fatalerr("%s: Too few values, line %d of input file\n",
367 basenm, linenum);
368 ts_dptbl[i].ts_tqexp = (short)atoi(tokp);
369 if (ts_dptbl[i].ts_tqexp < 0 ||
370 ts_dptbl[i].ts_tqexp > tsadmin.ts_ndpents)
371 fatalerr("%s: ts_tqexp value out of valid range; "
372 "line %d of input,\ntable not overwritten\n",
373 basenm, linenum);
374
375 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
376 fatalerr("%s: Too few values, line %d of input file\n",
377 basenm, linenum);
378 ts_dptbl[i].ts_slpret = (short)atoi(tokp);
379 if (ts_dptbl[i].ts_slpret < 0 ||
380 ts_dptbl[i].ts_slpret > tsadmin.ts_ndpents)
381 fatalerr("%s: ts_slpret value out of valid range; "
382 "line %d of input,\ntable not overwritten\n",
383 basenm, linenum);
384
385 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
386 fatalerr("%s: Too few values, line %d of input file\n",
387 basenm, linenum);
388 ts_dptbl[i].ts_maxwait = (short)atoi(tokp);
389 if (ts_dptbl[i].ts_maxwait < 0)
390 fatalerr("%s: ts_maxwait value out of valid range; "
391 "line %d of input,\ntable not overwritten\n",
392 basenm, linenum);
393
394 if ((tokp = strtok(NULL, " \t")) == NULL || tokp[0] == '#')
395 fatalerr("%s: Too few values, line %d of input file\n",
396 basenm, linenum);
397 ts_dptbl[i].ts_lwait = (short)atoi(tokp);
398 if (ts_dptbl[i].ts_lwait < 0 ||
399 ts_dptbl[i].ts_lwait > tsadmin.ts_ndpents)
400 fatalerr("%s: ts_lwait value out of valid range; "
401 "line %d of input,\ntable not overwritten\n",
402 basenm, linenum);
403
404 if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#')
405 fatalerr("%s: Too many values, line %d of input file\n",
406 basenm, linenum);
407 }
408
409 /*
410 * We've read enough lines to fill the table. We fail
411 * if the input file contains any more.
412 */
413 while (fgets(buf, sizeof (buf), fp) != NULL) {
414 if (buf[0] != '#' && buf[0] != '\0' &&
415 (wslength = strspn(buf, " \t\n")) != strlen(buf) &&
416 strchr(buf, '#') != buf + wslength)
417 fatalerr("%s: Too many lines in input table\n",
418 basenm);
419 }
420
421 tsadmin.ts_dpents = ts_dptbl;
422 tsadmin.ts_cmd = TS_SETDPTBL;
423 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
424 fatalerr("%s: Can't set ts_dptbl, priocntl system call \
425 failed with errno %d\n", basenm, errno);
426 }
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