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 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 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 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