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
main(int argc,char ** argv)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
get_iadptbl(ulong_t res)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
set_iadptbl(infile)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 }
431