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 <sys/types.h> 37 #include <sys/priocntl.h> 38 #include <sys/fxpriocntl.h> 39 #include <sys/param.h> 40 #include <errno.h> 41 #include <sys/fx.h> 42 43 #include "dispadmin.h" 44 45 /* 46 * This file contains the class specific code implementing 47 * the fixed-priority dispadmin sub-command. 48 */ 49 50 #define BASENMSZ 16 51 52 extern char *basename(); 53 54 static void get_fxdptbl(), set_fxdptbl(); 55 56 static char usage[] = "usage: dispadmin -l\n" 57 "dispadmin -c FX -g [-r res]\n" 58 "dispadmin -c FX -s infile\n"; 59 60 static char basenm[BASENMSZ]; 61 static char cmdpath[256]; 62 63 64 int 65 main(int argc, char **argv) 66 { 67 int c; 68 int lflag, gflag, rflag, sflag; 69 ulong_t res; 70 char *infile; 71 char *endp; 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, "FX") != 0) 85 fatalerr("error: %s executed for %s class, " 86 "%s is actually sub-command for FX class\n", 87 cmdpath, optarg, cmdpath); 88 break; 89 90 case 'g': 91 gflag++; 92 break; 93 94 case 'r': 95 rflag++; 96 errno = 0; 97 res = strtoul(optarg, &endp, 10); 98 if (res == 0 || errno != 0 || *endp != '\0') 99 fatalerr("%s: Can't convert to requested " 100 "resolution\n", basenm); 101 break; 102 103 case 's': 104 sflag++; 105 infile = optarg; 106 break; 107 108 case '?': 109 fatalerr(usage); 110 111 default: 112 break; 113 } 114 } 115 116 117 if (lflag) { 118 if (gflag || rflag || sflag) 119 fatalerr(usage); 120 121 (void) printf("FX\t(Fixed Priority)\n"); 122 return (0); 123 124 } else if (gflag) { 125 if (sflag) 126 fatalerr(usage); 127 128 if (rflag == 0) 129 res = 1000; 130 131 get_fxdptbl(res); 132 return (0); 133 134 } else if (sflag) { 135 if (rflag) 136 fatalerr(usage); 137 138 set_fxdptbl(infile); 139 return (0); 140 141 } else { 142 fatalerr(usage); 143 } 144 return (1); 145 } 146 147 148 /* 149 * Retrieve the current fx_dptbl from memory, convert the time quantum 150 * values to the resolution specified by res and write the table to stdout. 151 */ 152 static void 153 get_fxdptbl(ulong_t res) 154 { 155 int i; 156 int fxdpsz; 157 pcinfo_t pcinfo; 158 pcadmin_t pcadmin; 159 fxadmin_t fxadmin; 160 fxdpent_t *fx_dptbl; 161 hrtimer_t hrtime; 162 163 (void) strcpy(pcinfo.pc_clname, "FX"); 164 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1) 165 fatalerr("%s: Can't get FX class ID, priocntl system call " 166 "failed with errno %d\n", basenm, errno); 167 168 pcadmin.pc_cid = pcinfo.pc_cid; 169 pcadmin.pc_cladmin = (char *)&fxadmin; 170 fxadmin.fx_cmd = FX_GETDPSIZE; 171 172 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1) 173 fatalerr("%s: Can't get fx_dptbl size, priocntl system call " 174 "failed with errno %d\n", basenm, errno); 175 176 fxdpsz = fxadmin.fx_ndpents * sizeof (fxdpent_t); 177 if ((fx_dptbl = (fxdpent_t *)malloc(fxdpsz)) == NULL) 178 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm); 179 180 fxadmin.fx_dpents = fx_dptbl; 181 182 fxadmin.fx_cmd = FX_GETDPTBL; 183 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1) 184 fatalerr("%s: Can't get fx_dptbl, priocntl system call " 185 "failed with errno %d\n", basenm, errno); 186 187 (void) printf("# Fixed Priority Dispatcher Configuration\n"); 188 (void) printf("RES=%ld\n\n", res); 189 (void) printf("# TIME QUANTUM PRIORITY\n"); 190 (void) printf("# (fx_quantum) LEVEL\n"); 191 192 for (i = 0; i < fxadmin.fx_ndpents; i++) { 193 if (res != HZ && fx_dptbl[i].fx_quantum != FX_TQINF) { 194 hrtime.hrt_secs = 0; 195 hrtime.hrt_rem = fx_dptbl[i].fx_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 ((fx_dptbl[i].fx_quantum = hrtconvert(&hrtime)) 201 == -1) 202 fatalerr("%s: Can't express time quantum in " 203 "requested resolution,\n" 204 "try coarser resolution\n", basenm); 205 } 206 (void) printf("%10d # %3d\n", 207 fx_dptbl[i].fx_quantum, i); 208 } 209 } 210 211 212 /* 213 * Read the fx_dptbl values from infile, convert the time quantum values 214 * to HZ resolution, do a little sanity checking and overwrite the table 215 * in memory with the values from the file. 216 */ 217 static void 218 set_fxdptbl(char *infile) 219 { 220 int i; 221 int nfxdpents; 222 char *tokp; 223 pcinfo_t pcinfo; 224 pcadmin_t pcadmin; 225 fxadmin_t fxadmin; 226 fxdpent_t *fx_dptbl; 227 int linenum; 228 ulong_t res; 229 hrtimer_t hrtime; 230 FILE *fp; 231 char buf[512]; 232 int wslength; 233 char *endp; 234 char name[512], value[512]; 235 int len; 236 237 (void) strcpy(pcinfo.pc_clname, "FX"); 238 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1) 239 fatalerr("%s: Can't get FX class ID, priocntl system call " 240 "failed with errno %d\n", basenm, errno); 241 242 pcadmin.pc_cid = pcinfo.pc_cid; 243 pcadmin.pc_cladmin = (char *)&fxadmin; 244 fxadmin.fx_cmd = FX_GETDPSIZE; 245 246 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1) 247 fatalerr("%s: Can't get fx_dptbl size, priocntl system call " 248 "failed with errno %d\n", basenm, errno); 249 250 nfxdpents = fxadmin.fx_ndpents; 251 if ((fx_dptbl = 252 (fxdpent_t *)malloc(nfxdpents * sizeof (fxdpent_t))) == NULL) 253 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm); 254 255 if ((fp = fopen(infile, "r")) == NULL) 256 fatalerr("%s: Can't open %s for input\n", basenm, infile); 257 258 linenum = 0; 259 260 /* 261 * Find the first non-blank, non-comment line. A comment line 262 * is any line with '#' as the first non-white-space character. 263 */ 264 do { 265 if (fgets(buf, sizeof (buf), fp) == NULL) 266 fatalerr("%s: Too few lines in input table\n", basenm); 267 linenum++; 268 } while (buf[0] == '#' || buf[0] == '\0' || 269 (wslength = strspn(buf, " \t\n")) == strlen(buf) || 270 strchr(buf, '#') == buf + wslength); 271 272 /* LINTED - unbounded string specifier */ 273 if (sscanf(buf, " %[^=]=%s \n%n", name, value, &len) == 2 && 274 name[0] != '\0' && value[0] != '\0' && len == strlen(buf)) { 275 276 if (strcmp(name, "RES") == 0) { 277 errno = 0; 278 i = (int)strtol(value, &endp, 10); 279 if (errno != 0 || endp == value || 280 i < 0 || *endp != '\0') 281 fatalerr("%s: Bad RES specification, " 282 "line %d of input file\n", basenm, linenum); 283 else 284 res = i; 285 } else { 286 fatalerr("%s: Bad RES specification, " 287 "line %d of input file\n", basenm, linenum); 288 } 289 } 290 291 /* 292 * The remainder of the input file should contain exactly enough 293 * non-blank, non-comment lines to fill the table (fx_ndpents lines). 294 * We assume that any non-blank, non-comment line is data for the 295 * table and fail if we find more or less than we need. 296 */ 297 for (i = 0; i < fxadmin.fx_ndpents; i++) { 298 299 /* 300 * Get the next non-blank, non-comment line. 301 */ 302 do { 303 if (fgets(buf, sizeof (buf), fp) == NULL) 304 fatalerr("%s: Too few lines in input table\n", 305 basenm); 306 linenum++; 307 } while (buf[0] == '#' || buf[0] == '\0' || 308 (wslength = strspn(buf, " \t\n")) == strlen(buf) || 309 strchr(buf, '#') == buf + wslength); 310 311 if ((tokp = strtok(buf, " \t")) == NULL) 312 fatalerr("%s: Too few values, line %d of input file\n", 313 basenm, linenum); 314 315 fx_dptbl[i].fx_quantum = atol(tokp); 316 if (fx_dptbl[i].fx_quantum <= 0) { 317 fatalerr("%s: fx_quantum value out of " 318 "valid range; line %d of input,\n" 319 "table not overwritten\n", basenm, linenum); 320 } else if (res != HZ) { 321 hrtime.hrt_secs = 0; 322 hrtime.hrt_rem = fx_dptbl[i].fx_quantum; 323 hrtime.hrt_res = res; 324 if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1) 325 fatalerr("%s: Can't convert specified " 326 "resolution to ticks\n", basenm); 327 if ((fx_dptbl[i].fx_quantum = 328 hrtconvert(&hrtime)) == -1) 329 fatalerr("%s: fx_quantum value out of " 330 "valid range; line %d of input,\n" 331 "table not overwritten\n", basenm, linenum); 332 } 333 334 if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#') 335 fatalerr("%s: Too many values, line %d of input file\n", 336 basenm, linenum); 337 } 338 339 /* 340 * We've read enough lines to fill the table. We fail 341 * if the input file contains any more. 342 */ 343 while (fgets(buf, sizeof (buf), fp) != NULL) { 344 if (buf[0] != '#' && buf[0] != '\0' && 345 (wslength = strspn(buf, " \t\n")) != strlen(buf) && 346 strchr(buf, '#') != buf + wslength) 347 fatalerr("%s: Too many lines in input table\n", 348 basenm); 349 } 350 351 fxadmin.fx_dpents = fx_dptbl; 352 fxadmin.fx_cmd = FX_SETDPTBL; 353 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1) 354 fatalerr("%s: Can't set fx_dptbl, priocntl system call failed " 355 "with errno %d\n", basenm, errno); 356 } 357