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0
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License, Version 1.0 only
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6 * (the "License"). You may not use this file except in compliance
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7 * with the License.
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8 *
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9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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10 * or http://www.opensolaris.org/os/licensing.
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11 * See the License for the specific language governing permissions
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12 * and limitations under the License.
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13 *
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14 * When distributing Covered Code, include this CDDL HEADER in each
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15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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16 * If applicable, add the following below this CDDL HEADER, with the
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17 * fields enclosed by brackets "[]" replaced with your own identifying
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18 * information: Portions Copyright [yyyy] [name of copyright owner]
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19 *
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20 * CDDL HEADER END
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21 */
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22 /*
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23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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24 * Use is subject to license terms.
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25 */
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26
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27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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28 /* All Rights Reserved */
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29
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30 #pragma ident "@(#)fxdispadmin.c 1.5 05/06/08 SMI"
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31
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32 #include <stdio.h>
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33 #include <stdlib.h>
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34 #include <string.h>
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35 #include <unistd.h>
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36 #include <sys/types.h>
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37 #include <sys/priocntl.h>
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38 #include <sys/fxpriocntl.h>
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39 #include <sys/param.h>
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40 #include <errno.h>
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41 #include <sys/fx.h>
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42
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43 #include "dispadmin.h"
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44
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45 /*
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46 * This file contains the class specific code implementing
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47 * the fixed-priority dispadmin sub-command.
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48 */
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49
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50 #define BASENMSZ 16
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51
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52 extern char *basename();
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53
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54 static void get_fxdptbl(), set_fxdptbl();
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55
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56 static char usage[] = "usage: dispadmin -l\n"
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57 "dispadmin -c FX -g [-r res]\n"
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58 "dispadmin -c FX -s infile\n";
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59
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60 static char basenm[BASENMSZ];
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61 static char cmdpath[256];
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62
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63
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64 int
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65 main(int argc, char **argv)
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66 {
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67 int c;
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68 int lflag, gflag, rflag, sflag;
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69 ulong_t res;
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70 char *infile;
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71 char *endp;
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72
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73 (void) strcpy(cmdpath, argv[0]);
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74 (void) strcpy(basenm, basename(argv[0]));
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75 lflag = gflag = rflag = sflag = 0;
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76 while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
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77 switch (c) {
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78
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79 case 'l':
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80 lflag++;
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81 break;
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82
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83 case 'c':
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84 if (strcmp(optarg, "FX") != 0)
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85 fatalerr("error: %s executed for %s class, "
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86 "%s is actually sub-command for FX class\n",
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87 cmdpath, optarg, cmdpath);
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88 break;
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89
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90 case 'g':
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91 gflag++;
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92 break;
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93
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94 case 'r':
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95 rflag++;
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96 errno = 0;
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97 res = strtoul(optarg, &endp, 10);
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98 if (res == 0 || errno != 0 || *endp != '\0')
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99 fatalerr("%s: Can't convert to requested "
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100 "resolution\n", basenm);
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101 break;
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102
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103 case 's':
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104 sflag++;
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105 infile = optarg;
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106 break;
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107
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108 case '?':
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109 fatalerr(usage);
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110
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111 default:
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112 break;
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113 }
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114 }
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115
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116
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117 if (lflag) {
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118 if (gflag || rflag || sflag)
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119 fatalerr(usage);
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120
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121 (void) printf("FX\t(Fixed Priority)\n");
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122 return (0);
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123
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124 } else if (gflag) {
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125 if (sflag)
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126 fatalerr(usage);
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127
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128 if (rflag == 0)
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129 res = 1000;
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130
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131 get_fxdptbl(res);
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132 return (0);
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133
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134 } else if (sflag) {
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135 if (rflag)
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136 fatalerr(usage);
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137
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138 set_fxdptbl(infile);
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139 return (0);
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140
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141 } else {
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142 fatalerr(usage);
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143 }
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144 return (1);
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145 }
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146
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147
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148 /*
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149 * Retrieve the current fx_dptbl from memory, convert the time quantum
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150 * values to the resolution specified by res and write the table to stdout.
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151 */
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152 static void
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153 get_fxdptbl(ulong_t res)
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154 {
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155 int i;
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156 int fxdpsz;
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157 pcinfo_t pcinfo;
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158 pcadmin_t pcadmin;
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159 fxadmin_t fxadmin;
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160 fxdpent_t *fx_dptbl;
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161 hrtimer_t hrtime;
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162
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163 (void) strcpy(pcinfo.pc_clname, "FX");
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164 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
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165 fatalerr("%s: Can't get FX class ID, priocntl system call "
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166 "failed with errno %d\n", basenm, errno);
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167
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168 pcadmin.pc_cid = pcinfo.pc_cid;
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169 pcadmin.pc_cladmin = (char *)&fxadmin;
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170 fxadmin.fx_cmd = FX_GETDPSIZE;
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171
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172 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
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173 fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
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174 "failed with errno %d\n", basenm, errno);
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175
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176 fxdpsz = fxadmin.fx_ndpents * sizeof (fxdpent_t);
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177 if ((fx_dptbl = (fxdpent_t *)malloc(fxdpsz)) == NULL)
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178 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
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179
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180 fxadmin.fx_dpents = fx_dptbl;
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181
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182 fxadmin.fx_cmd = FX_GETDPTBL;
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183 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
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184 fatalerr("%s: Can't get fx_dptbl, priocntl system call "
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185 "failed with errno %d\n", basenm, errno);
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186
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187 (void) printf("# Fixed Priority Dispatcher Configuration\n");
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188 (void) printf("RES=%ld\n\n", res);
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189 (void) printf("# TIME QUANTUM PRIORITY\n");
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190 (void) printf("# (fx_quantum) LEVEL\n");
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191
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192 for (i = 0; i < fxadmin.fx_ndpents; i++) {
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193 if (res != HZ && fx_dptbl[i].fx_quantum != FX_TQINF) {
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194 hrtime.hrt_secs = 0;
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195 hrtime.hrt_rem = fx_dptbl[i].fx_quantum;
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196 hrtime.hrt_res = HZ;
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197 if (_hrtnewres(&hrtime, res, HRT_RNDUP) == -1)
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198 fatalerr("%s: Can't convert to requested "
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199 "resolution\n", basenm);
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200 if ((fx_dptbl[i].fx_quantum = hrtconvert(&hrtime))
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201 == -1)
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202 fatalerr("%s: Can't express time quantum in "
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203 "requested resolution,\n"
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204 "try coarser resolution\n", basenm);
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205 }
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206 (void) printf("%10d # %3d\n",
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207 fx_dptbl[i].fx_quantum, i);
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208 }
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209 }
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210
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211
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212 /*
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213 * Read the fx_dptbl values from infile, convert the time quantum values
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214 * to HZ resolution, do a little sanity checking and overwrite the table
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215 * in memory with the values from the file.
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216 */
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217 static void
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218 set_fxdptbl(char *infile)
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219 {
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220 int i;
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221 int nfxdpents;
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222 char *tokp;
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223 pcinfo_t pcinfo;
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224 pcadmin_t pcadmin;
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225 fxadmin_t fxadmin;
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226 fxdpent_t *fx_dptbl;
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227 int linenum;
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228 ulong_t res;
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229 hrtimer_t hrtime;
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230 FILE *fp;
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231 char buf[512];
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232 int wslength;
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233 char *endp;
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234 char name[512], value[512];
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235 int len;
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236
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237 (void) strcpy(pcinfo.pc_clname, "FX");
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238 if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
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239 fatalerr("%s: Can't get FX class ID, priocntl system call "
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240 "failed with errno %d\n", basenm, errno);
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241
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242 pcadmin.pc_cid = pcinfo.pc_cid;
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243 pcadmin.pc_cladmin = (char *)&fxadmin;
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244 fxadmin.fx_cmd = FX_GETDPSIZE;
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245
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246 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
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247 fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
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248 "failed with errno %d\n", basenm, errno);
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249
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250 nfxdpents = fxadmin.fx_ndpents;
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251 if ((fx_dptbl =
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252 (fxdpent_t *)malloc(nfxdpents * sizeof (fxdpent_t))) == NULL)
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253 fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
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254
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255 if ((fp = fopen(infile, "r")) == NULL)
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256 fatalerr("%s: Can't open %s for input\n", basenm, infile);
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257
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258 linenum = 0;
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259
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260 /*
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261 * Find the first non-blank, non-comment line. A comment line
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262 * is any line with '#' as the first non-white-space character.
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263 */
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264 do {
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265 if (fgets(buf, sizeof (buf), fp) == NULL)
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266 fatalerr("%s: Too few lines in input table\n", basenm);
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267 linenum++;
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268 } while (buf[0] == '#' || buf[0] == '\0' ||
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269 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
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270 strchr(buf, '#') == buf + wslength);
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271
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272 /* LINTED - unbounded string specifier */
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273 if (sscanf(buf, " %[^=]=%s \n%n", name, value, &len) == 2 &&
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274 name[0] != '\0' && value[0] != '\0' && len == strlen(buf)) {
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275
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276 if (strcmp(name, "RES") == 0) {
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277 errno = 0;
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278 i = (int)strtol(value, &endp, 10);
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279 if (errno != 0 || endp == value ||
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280 i < 0 || *endp != '\0')
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281 fatalerr("%s: Bad RES specification, "
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282 "line %d of input file\n", basenm, linenum);
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283 else
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284 res = i;
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285 } else {
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286 fatalerr("%s: Bad RES specification, "
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287 "line %d of input file\n", basenm, linenum);
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288 }
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289 }
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290
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291 /*
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292 * The remainder of the input file should contain exactly enough
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293 * non-blank, non-comment lines to fill the table (fx_ndpents lines).
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294 * We assume that any non-blank, non-comment line is data for the
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295 * table and fail if we find more or less than we need.
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296 */
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297 for (i = 0; i < fxadmin.fx_ndpents; i++) {
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298
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299 /*
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300 * Get the next non-blank, non-comment line.
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301 */
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302 do {
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303 if (fgets(buf, sizeof (buf), fp) == NULL)
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304 fatalerr("%s: Too few lines in input table\n",
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305 basenm);
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306 linenum++;
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307 } while (buf[0] == '#' || buf[0] == '\0' ||
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308 (wslength = strspn(buf, " \t\n")) == strlen(buf) ||
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309 strchr(buf, '#') == buf + wslength);
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310
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311 if ((tokp = strtok(buf, " \t")) == NULL)
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312 fatalerr("%s: Too few values, line %d of input file\n",
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313 basenm, linenum);
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314
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315 fx_dptbl[i].fx_quantum = atol(tokp);
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316 if (fx_dptbl[i].fx_quantum <= 0) {
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317 fatalerr("%s: fx_quantum value out of "
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318 "valid range; line %d of input,\n"
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319 "table not overwritten\n", basenm, linenum);
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320 } else if (res != HZ) {
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321 hrtime.hrt_secs = 0;
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322 hrtime.hrt_rem = fx_dptbl[i].fx_quantum;
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323 hrtime.hrt_res = res;
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324 if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
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325 fatalerr("%s: Can't convert specified "
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326 "resolution to ticks\n", basenm);
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327 if ((fx_dptbl[i].fx_quantum =
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328 hrtconvert(&hrtime)) == -1)
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329 fatalerr("%s: fx_quantum value out of "
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330 "valid range; line %d of input,\n"
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331 "table not overwritten\n", basenm, linenum);
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332 }
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333
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334 if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#')
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335 fatalerr("%s: Too many values, line %d of input file\n",
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336 basenm, linenum);
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337 }
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338
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339 /*
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340 * We've read enough lines to fill the table. We fail
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341 * if the input file contains any more.
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342 */
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343 while (fgets(buf, sizeof (buf), fp) != NULL) {
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344 if (buf[0] != '#' && buf[0] != '\0' &&
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345 (wslength = strspn(buf, " \t\n")) != strlen(buf) &&
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346 strchr(buf, '#') != buf + wslength)
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347 fatalerr("%s: Too many lines in input table\n",
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348 basenm);
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349 }
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350
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351 fxadmin.fx_dpents = fx_dptbl;
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352 fxadmin.fx_cmd = FX_SETDPTBL;
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353 if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
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354 fatalerr("%s: Can't set fx_dptbl, priocntl system call failed "
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355 "with errno %d\n", basenm, errno);
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356 }
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