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 <sys/types.h>
35 #include <sys/priocntl.h>
36 #include <sys/fxpriocntl.h>
37 #include <sys/param.h>
38 #include <errno.h>
39 #include <sys/fx.h>
40
41 #include "dispadmin.h"
42
43 /*
44 * This file contains the class specific code implementing
45 * the fixed-priority dispadmin sub-command.
46 */
47
48 #define BASENMSZ 16
49
50 extern char *basename();
51
52 static void get_fxdptbl(), set_fxdptbl();
53
54 static char usage[] = "usage: dispadmin -l\n"
55 "dispadmin -c FX -g [-r res]\n"
56 "dispadmin -c FX -s infile\n";
57
58 static char basenm[BASENMSZ];
59 static char cmdpath[256];
60
61
62 int
main(int argc,char ** argv)63 main(int argc, char **argv)
64 {
65 int c;
66 int lflag, gflag, rflag, sflag;
67 ulong_t res;
68 char *infile;
69 char *endp;
70
71 (void) strcpy(cmdpath, argv[0]);
72 (void) strcpy(basenm, basename(argv[0]));
73 lflag = gflag = rflag = sflag = 0;
74 while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
75 switch (c) {
76
77 case 'l':
78 lflag++;
79 break;
80
81 case 'c':
82 if (strcmp(optarg, "FX") != 0)
83 fatalerr("error: %s executed for %s class, "
84 "%s is actually sub-command for FX class\n",
85 cmdpath, optarg, cmdpath);
86 break;
87
88 case 'g':
89 gflag++;
90 break;
91
92 case 'r':
93 rflag++;
94 errno = 0;
95 res = strtoul(optarg, &endp, 10);
96 if (res == 0 || errno != 0 || *endp != '\0')
97 fatalerr("%s: Can't convert to requested "
98 "resolution\n", basenm);
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
115 if (lflag) {
116 if (gflag || rflag || sflag)
117 fatalerr(usage);
118
119 (void) printf("FX\t(Fixed Priority)\n");
120 return (0);
121
122 } else if (gflag) {
123 if (sflag)
124 fatalerr(usage);
125
126 if (rflag == 0)
127 res = 1000;
128
129 get_fxdptbl(res);
130 return (0);
131
132 } else if (sflag) {
133 if (rflag)
134 fatalerr(usage);
135
136 set_fxdptbl(infile);
137 return (0);
138
139 } else {
140 fatalerr(usage);
141 }
142 return (1);
143 }
144
145
146 /*
147 * Retrieve the current fx_dptbl from memory, convert the time quantum
148 * values to the resolution specified by res and write the table to stdout.
149 */
150 static void
get_fxdptbl(ulong_t res)151 get_fxdptbl(ulong_t res)
152 {
153 int i;
154 int fxdpsz;
155 pcinfo_t pcinfo;
156 pcadmin_t pcadmin;
157 fxadmin_t fxadmin;
158 fxdpent_t *fx_dptbl;
159 hrtimer_t hrtime;
160
161 (void) strcpy(pcinfo.pc_clname, "FX");
162 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
163 fatalerr("%s: Can't get FX class ID, priocntl system call "
164 "failed with errno %d\n", basenm, errno);
165
166 pcadmin.pc_cid = pcinfo.pc_cid;
167 pcadmin.pc_cladmin = (char *)&fxadmin;
168 fxadmin.fx_cmd = FX_GETDPSIZE;
169
170 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
171 fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
172 "failed with errno %d\n", basenm, errno);
173
174 fxdpsz = fxadmin.fx_ndpents * sizeof (fxdpent_t);
175 if ((fx_dptbl = (fxdpent_t *)malloc(fxdpsz)) == NULL)
176 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
177
178 fxadmin.fx_dpents = fx_dptbl;
179
180 fxadmin.fx_cmd = FX_GETDPTBL;
181 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
182 fatalerr("%s: Can't get fx_dptbl, priocntl system call "
183 "failed with errno %d\n", basenm, errno);
184
185 (void) printf("# Fixed Priority Dispatcher Configuration\n");
186 (void) printf("RES=%ld\n\n", res);
187 (void) printf("# TIME QUANTUM PRIORITY\n");
188 (void) printf("# (fx_quantum) LEVEL\n");
189
190 for (i = 0; i < fxadmin.fx_ndpents; i++) {
191 if (res != HZ && fx_dptbl[i].fx_quantum != FX_TQINF) {
192 hrtime.hrt_secs = 0;
193 hrtime.hrt_rem = fx_dptbl[i].fx_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 ((fx_dptbl[i].fx_quantum = hrtconvert(&hrtime))
199 == -1)
200 fatalerr("%s: Can't express time quantum in "
201 "requested resolution,\n"
202 "try coarser resolution\n", basenm);
203 }
204 (void) printf("%10d # %3d\n",
205 fx_dptbl[i].fx_quantum, i);
206 }
207 }
208
209
210 /*
211 * Read the fx_dptbl values from infile, convert the time quantum values
212 * to HZ resolution, do a little sanity checking and overwrite the table
213 * in memory with the values from the file.
214 */
215 static void
set_fxdptbl(char * infile)216 set_fxdptbl(char *infile)
217 {
218 int i;
219 int nfxdpents;
220 char *tokp;
221 pcinfo_t pcinfo;
222 pcadmin_t pcadmin;
223 fxadmin_t fxadmin;
224 fxdpent_t *fx_dptbl;
225 int linenum;
226 ulong_t res;
227 hrtimer_t hrtime;
228 FILE *fp;
229 char buf[512];
230 int wslength;
231 char *endp;
232 char name[512], value[512];
233 int len;
234
235 (void) strcpy(pcinfo.pc_clname, "FX");
236 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
237 fatalerr("%s: Can't get FX class ID, priocntl system call "
238 "failed with errno %d\n", basenm, errno);
239
240 pcadmin.pc_cid = pcinfo.pc_cid;
241 pcadmin.pc_cladmin = (char *)&fxadmin;
242 fxadmin.fx_cmd = FX_GETDPSIZE;
243
244 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
245 fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
246 "failed with errno %d\n", basenm, errno);
247
248 nfxdpents = fxadmin.fx_ndpents;
249 if ((fx_dptbl =
250 (fxdpent_t *)malloc(nfxdpents * sizeof (fxdpent_t))) == NULL)
251 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
252
253 if ((fp = fopen(infile, "r")) == NULL)
254 fatalerr("%s: Can't open %s for input\n", basenm, infile);
255
256 linenum = 0;
257
258 /*
259 * Find the first non-blank, non-comment line. A comment line
260 * is any line with '#' as the first non-white-space character.
261 */
262 do {
263 if (fgets(buf, sizeof (buf), fp) == NULL)
264 fatalerr("%s: Too few lines in input table\n", basenm);
265 linenum++;
266 } while (buf[0] == '#' || buf[0] == '\0' ||
267 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
268 strchr(buf, '#') == buf + wslength);
269
270 /* LINTED - unbounded string specifier */
271 if (sscanf(buf, " %[^=]=%s \n%n", name, value, &len) == 2 &&
272 name[0] != '\0' && value[0] != '\0' && len == strlen(buf)) {
273
274 if (strcmp(name, "RES") == 0) {
275 errno = 0;
276 i = (int)strtol(value, &endp, 10);
277 if (errno != 0 || endp == value ||
278 i < 0 || *endp != '\0')
279 fatalerr("%s: Bad RES specification, "
280 "line %d of input file\n", basenm, linenum);
281 else
282 res = i;
283 } else {
284 fatalerr("%s: Bad RES specification, "
285 "line %d of input file\n", basenm, linenum);
286 }
287 }
288
289 /*
290 * The remainder of the input file should contain exactly enough
291 * non-blank, non-comment lines to fill the table (fx_ndpents lines).
292 * We assume that any non-blank, non-comment line is data for the
293 * table and fail if we find more or less than we need.
294 */
295 for (i = 0; i < fxadmin.fx_ndpents; i++) {
296
297 /*
298 * Get the next non-blank, non-comment line.
299 */
300 do {
301 if (fgets(buf, sizeof (buf), fp) == NULL)
302 fatalerr("%s: Too few lines in input table\n",
303 basenm);
304 linenum++;
305 } while (buf[0] == '#' || buf[0] == '\0' ||
306 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
307 strchr(buf, '#') == buf + wslength);
308
309 if ((tokp = strtok(buf, " \t")) == NULL)
310 fatalerr("%s: Too few values, line %d of input file\n",
311 basenm, linenum);
312
313 fx_dptbl[i].fx_quantum = atol(tokp);
314 if (fx_dptbl[i].fx_quantum <= 0) {
315 fatalerr("%s: fx_quantum value out of "
316 "valid range; line %d of input,\n"
317 "table not overwritten\n", basenm, linenum);
318 } else if (res != HZ) {
319 hrtime.hrt_secs = 0;
320 hrtime.hrt_rem = fx_dptbl[i].fx_quantum;
321 hrtime.hrt_res = res;
322 if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
323 fatalerr("%s: Can't convert specified "
324 "resolution to ticks\n", basenm);
325 if ((fx_dptbl[i].fx_quantum =
326 hrtconvert(&hrtime)) == -1)
327 fatalerr("%s: fx_quantum value out of "
328 "valid range; line %d of input,\n"
329 "table not overwritten\n", basenm, linenum);
330 }
331
332 if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#')
333 fatalerr("%s: Too many values, line %d of input file\n",
334 basenm, linenum);
335 }
336
337 /*
338 * We've read enough lines to fill the table. We fail
339 * if the input file contains any more.
340 */
341 while (fgets(buf, sizeof (buf), fp) != NULL) {
342 if (buf[0] != '#' && buf[0] != '\0' &&
343 (wslength = strspn(buf, " \t\n")) != strlen(buf) &&
344 strchr(buf, '#') != buf + wslength)
345 fatalerr("%s: Too many lines in input table\n",
346 basenm);
347 }
348
349 fxadmin.fx_dpents = fx_dptbl;
350 fxadmin.fx_cmd = FX_SETDPTBL;
351 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
352 fatalerr("%s: Can't set fx_dptbl, priocntl system call failed "
353 "with errno %d\n", basenm, errno);
354 }
355