1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
29*7c478bd9Sstevel@tonic-gate
30*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
31*7c478bd9Sstevel@tonic-gate #include <sys/param.h>
32*7c478bd9Sstevel@tonic-gate #include <sys/fss.h>
33*7c478bd9Sstevel@tonic-gate #include <sys/priocntl.h>
34*7c478bd9Sstevel@tonic-gate #include <sys/fsspriocntl.h>
35*7c478bd9Sstevel@tonic-gate #include <stdio.h>
36*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
37*7c478bd9Sstevel@tonic-gate #include <string.h>
38*7c478bd9Sstevel@tonic-gate #include <unistd.h>
39*7c478bd9Sstevel@tonic-gate #include <errno.h>
40*7c478bd9Sstevel@tonic-gate #include "dispadmin.h"
41*7c478bd9Sstevel@tonic-gate
42*7c478bd9Sstevel@tonic-gate /*
43*7c478bd9Sstevel@tonic-gate * This file contains the class specific code implementing the fair-share
44*7c478bd9Sstevel@tonic-gate * scheduler dispadmin sub-command.
45*7c478bd9Sstevel@tonic-gate */
46*7c478bd9Sstevel@tonic-gate
47*7c478bd9Sstevel@tonic-gate #define BASENMSZ 16
48*7c478bd9Sstevel@tonic-gate
49*7c478bd9Sstevel@tonic-gate extern char *basename();
50*7c478bd9Sstevel@tonic-gate static void getadmin(), setadmin();
51*7c478bd9Sstevel@tonic-gate
52*7c478bd9Sstevel@tonic-gate static char usage[] = "usage: dispadmin -l\n"
53*7c478bd9Sstevel@tonic-gate "dispadmin -c FSS -g [-r res]\n"
54*7c478bd9Sstevel@tonic-gate "dispadmin -c FSS -s infile\n";
55*7c478bd9Sstevel@tonic-gate
56*7c478bd9Sstevel@tonic-gate static char basenm[BASENMSZ];
57*7c478bd9Sstevel@tonic-gate static char cmdpath[256];
58*7c478bd9Sstevel@tonic-gate
59*7c478bd9Sstevel@tonic-gate int
main(int argc,char ** argv)60*7c478bd9Sstevel@tonic-gate main(int argc, char **argv)
61*7c478bd9Sstevel@tonic-gate {
62*7c478bd9Sstevel@tonic-gate int c;
63*7c478bd9Sstevel@tonic-gate int lflag, gflag, rflag, sflag;
64*7c478bd9Sstevel@tonic-gate ulong_t res;
65*7c478bd9Sstevel@tonic-gate char *infile;
66*7c478bd9Sstevel@tonic-gate char *endp;
67*7c478bd9Sstevel@tonic-gate
68*7c478bd9Sstevel@tonic-gate (void) strcpy(cmdpath, argv[0]);
69*7c478bd9Sstevel@tonic-gate (void) strcpy(basenm, basename(argv[0]));
70*7c478bd9Sstevel@tonic-gate lflag = gflag = rflag = sflag = 0;
71*7c478bd9Sstevel@tonic-gate while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
72*7c478bd9Sstevel@tonic-gate switch (c) {
73*7c478bd9Sstevel@tonic-gate
74*7c478bd9Sstevel@tonic-gate case 'l':
75*7c478bd9Sstevel@tonic-gate lflag++;
76*7c478bd9Sstevel@tonic-gate break;
77*7c478bd9Sstevel@tonic-gate
78*7c478bd9Sstevel@tonic-gate case 'c':
79*7c478bd9Sstevel@tonic-gate if (strcmp(optarg, "FSS") != 0)
80*7c478bd9Sstevel@tonic-gate fatalerr("error: %s executed for %s class, "
81*7c478bd9Sstevel@tonic-gate "%s is actually sub-command for FSS "
82*7c478bd9Sstevel@tonic-gate "class\n", cmdpath, optarg, cmdpath);
83*7c478bd9Sstevel@tonic-gate break;
84*7c478bd9Sstevel@tonic-gate
85*7c478bd9Sstevel@tonic-gate case 'g':
86*7c478bd9Sstevel@tonic-gate gflag++;
87*7c478bd9Sstevel@tonic-gate break;
88*7c478bd9Sstevel@tonic-gate
89*7c478bd9Sstevel@tonic-gate case 'r':
90*7c478bd9Sstevel@tonic-gate rflag++;
91*7c478bd9Sstevel@tonic-gate errno = 0;
92*7c478bd9Sstevel@tonic-gate res = strtoul(optarg, &endp, 10);
93*7c478bd9Sstevel@tonic-gate if (res == 0 || errno != 0 || *endp != '\0')
94*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't convert to requested "
95*7c478bd9Sstevel@tonic-gate "resolution\n", basenm);
96*7c478bd9Sstevel@tonic-gate break;
97*7c478bd9Sstevel@tonic-gate
98*7c478bd9Sstevel@tonic-gate case 's':
99*7c478bd9Sstevel@tonic-gate sflag++;
100*7c478bd9Sstevel@tonic-gate infile = optarg;
101*7c478bd9Sstevel@tonic-gate break;
102*7c478bd9Sstevel@tonic-gate
103*7c478bd9Sstevel@tonic-gate case '?':
104*7c478bd9Sstevel@tonic-gate fatalerr(usage);
105*7c478bd9Sstevel@tonic-gate
106*7c478bd9Sstevel@tonic-gate default:
107*7c478bd9Sstevel@tonic-gate break;
108*7c478bd9Sstevel@tonic-gate }
109*7c478bd9Sstevel@tonic-gate }
110*7c478bd9Sstevel@tonic-gate
111*7c478bd9Sstevel@tonic-gate if (lflag) {
112*7c478bd9Sstevel@tonic-gate if (gflag || rflag || sflag)
113*7c478bd9Sstevel@tonic-gate fatalerr(usage);
114*7c478bd9Sstevel@tonic-gate
115*7c478bd9Sstevel@tonic-gate (void) printf("FSS\t(Fair Share)\n");
116*7c478bd9Sstevel@tonic-gate return (0);
117*7c478bd9Sstevel@tonic-gate
118*7c478bd9Sstevel@tonic-gate } else if (gflag) {
119*7c478bd9Sstevel@tonic-gate if (lflag || sflag)
120*7c478bd9Sstevel@tonic-gate fatalerr(usage);
121*7c478bd9Sstevel@tonic-gate
122*7c478bd9Sstevel@tonic-gate if (rflag == 0)
123*7c478bd9Sstevel@tonic-gate res = 1000;
124*7c478bd9Sstevel@tonic-gate
125*7c478bd9Sstevel@tonic-gate getadmin(res);
126*7c478bd9Sstevel@tonic-gate return (0);
127*7c478bd9Sstevel@tonic-gate
128*7c478bd9Sstevel@tonic-gate } else if (sflag) {
129*7c478bd9Sstevel@tonic-gate if (lflag || gflag || rflag)
130*7c478bd9Sstevel@tonic-gate fatalerr(usage);
131*7c478bd9Sstevel@tonic-gate
132*7c478bd9Sstevel@tonic-gate setadmin(infile);
133*7c478bd9Sstevel@tonic-gate return (0);
134*7c478bd9Sstevel@tonic-gate
135*7c478bd9Sstevel@tonic-gate } else {
136*7c478bd9Sstevel@tonic-gate fatalerr(usage);
137*7c478bd9Sstevel@tonic-gate }
138*7c478bd9Sstevel@tonic-gate return (1);
139*7c478bd9Sstevel@tonic-gate }
140*7c478bd9Sstevel@tonic-gate
141*7c478bd9Sstevel@tonic-gate /*
142*7c478bd9Sstevel@tonic-gate * Retrieve the current settings from kernel, convert the time quantum
143*7c478bd9Sstevel@tonic-gate * value to the resolution specified by res and print out the results.
144*7c478bd9Sstevel@tonic-gate */
145*7c478bd9Sstevel@tonic-gate static void
getadmin(ulong_t res)146*7c478bd9Sstevel@tonic-gate getadmin(ulong_t res)
147*7c478bd9Sstevel@tonic-gate {
148*7c478bd9Sstevel@tonic-gate pcinfo_t pcinfo;
149*7c478bd9Sstevel@tonic-gate pcadmin_t pcadmin;
150*7c478bd9Sstevel@tonic-gate fssadmin_t fssadmin;
151*7c478bd9Sstevel@tonic-gate hrtimer_t hrtime;
152*7c478bd9Sstevel@tonic-gate long fss_quantum;
153*7c478bd9Sstevel@tonic-gate
154*7c478bd9Sstevel@tonic-gate (void) strcpy(pcinfo.pc_clname, "FSS");
155*7c478bd9Sstevel@tonic-gate if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
156*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't get FSS class ID, priocntl system call "
157*7c478bd9Sstevel@tonic-gate "failed (%s)\n", basenm, strerror(errno));
158*7c478bd9Sstevel@tonic-gate
159*7c478bd9Sstevel@tonic-gate pcadmin.pc_cid = pcinfo.pc_cid;
160*7c478bd9Sstevel@tonic-gate pcadmin.pc_cladmin = (char *)&fssadmin;
161*7c478bd9Sstevel@tonic-gate fssadmin.fss_cmd = FSS_GETADMIN;
162*7c478bd9Sstevel@tonic-gate
163*7c478bd9Sstevel@tonic-gate if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
164*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't get scheduler configuration, priocntl "
165*7c478bd9Sstevel@tonic-gate "system call failed (%s)\n", basenm, strerror(errno));
166*7c478bd9Sstevel@tonic-gate
167*7c478bd9Sstevel@tonic-gate hrtime.hrt_secs = 0;
168*7c478bd9Sstevel@tonic-gate hrtime.hrt_rem = fssadmin.fss_quantum;
169*7c478bd9Sstevel@tonic-gate hrtime.hrt_res = HZ;
170*7c478bd9Sstevel@tonic-gate if (_hrtnewres(&hrtime, res, HRT_RNDUP) == -1)
171*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't convert to requested resolution\n", basenm);
172*7c478bd9Sstevel@tonic-gate if ((fss_quantum = hrtconvert(&hrtime)) == -1)
173*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't express time quantum in "
174*7c478bd9Sstevel@tonic-gate "requested resolution,\n"
175*7c478bd9Sstevel@tonic-gate "try coarser resolution\n", basenm);
176*7c478bd9Sstevel@tonic-gate
177*7c478bd9Sstevel@tonic-gate (void) printf("#\n# Fair Share Scheduler Configuration\n#\n");
178*7c478bd9Sstevel@tonic-gate (void) printf("RES=%ld\n", res);
179*7c478bd9Sstevel@tonic-gate (void) printf("#\n# Time Quantum\n#\n");
180*7c478bd9Sstevel@tonic-gate (void) printf("QUANTUM=%ld\n", fss_quantum);
181*7c478bd9Sstevel@tonic-gate }
182*7c478bd9Sstevel@tonic-gate
183*7c478bd9Sstevel@tonic-gate /*
184*7c478bd9Sstevel@tonic-gate * Read the scheduler settings from infile, convert the time quantum values
185*7c478bd9Sstevel@tonic-gate * to HZ resolution, do a little sanity checking and overwrite kernel settings
186*7c478bd9Sstevel@tonic-gate * with the values from the file.
187*7c478bd9Sstevel@tonic-gate */
188*7c478bd9Sstevel@tonic-gate static void
setadmin(char * infile)189*7c478bd9Sstevel@tonic-gate setadmin(char *infile)
190*7c478bd9Sstevel@tonic-gate {
191*7c478bd9Sstevel@tonic-gate int i;
192*7c478bd9Sstevel@tonic-gate pcinfo_t pcinfo;
193*7c478bd9Sstevel@tonic-gate pcadmin_t pcadmin;
194*7c478bd9Sstevel@tonic-gate fssadmin_t fssadmin;
195*7c478bd9Sstevel@tonic-gate int line;
196*7c478bd9Sstevel@tonic-gate ulong_t res;
197*7c478bd9Sstevel@tonic-gate long fss_quantum;
198*7c478bd9Sstevel@tonic-gate hrtimer_t hrtime;
199*7c478bd9Sstevel@tonic-gate FILE *fp;
200*7c478bd9Sstevel@tonic-gate char buf[512];
201*7c478bd9Sstevel@tonic-gate char *endp;
202*7c478bd9Sstevel@tonic-gate int nparams = 0;
203*7c478bd9Sstevel@tonic-gate
204*7c478bd9Sstevel@tonic-gate (void) strcpy(pcinfo.pc_clname, "FSS");
205*7c478bd9Sstevel@tonic-gate if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
206*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't get FSS class ID, priocntl system call "
207*7c478bd9Sstevel@tonic-gate "failed (%s)\n", basenm, strerror(errno));
208*7c478bd9Sstevel@tonic-gate
209*7c478bd9Sstevel@tonic-gate if ((fp = fopen(infile, "r")) == NULL)
210*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't open %s for input\n", basenm, infile);
211*7c478bd9Sstevel@tonic-gate
212*7c478bd9Sstevel@tonic-gate for (line = 1; fgets(buf, sizeof (buf), fp) != NULL; line++) {
213*7c478bd9Sstevel@tonic-gate char name[512], value[512];
214*7c478bd9Sstevel@tonic-gate int len;
215*7c478bd9Sstevel@tonic-gate
216*7c478bd9Sstevel@tonic-gate if (buf[0] == '#' || buf[0] == '\n')
217*7c478bd9Sstevel@tonic-gate continue;
218*7c478bd9Sstevel@tonic-gate /*
219*7c478bd9Sstevel@tonic-gate * Look for "name=value", with optional whitespaces on either
220*7c478bd9Sstevel@tonic-gate * side, terminated by a newline, and consuming the whole line.
221*7c478bd9Sstevel@tonic-gate */
222*7c478bd9Sstevel@tonic-gate /* LINTED - unbounded string specifier */
223*7c478bd9Sstevel@tonic-gate if (sscanf(buf, " %[^=]=%s \n%n", name, value, &len) == 2 &&
224*7c478bd9Sstevel@tonic-gate name[0] != '\0' && value[0] != '\0' && len == strlen(buf)) {
225*7c478bd9Sstevel@tonic-gate
226*7c478bd9Sstevel@tonic-gate if (strcmp(name, "RES") == 0) {
227*7c478bd9Sstevel@tonic-gate errno = 0;
228*7c478bd9Sstevel@tonic-gate i = (int)strtol(value, &endp, 10);
229*7c478bd9Sstevel@tonic-gate if (errno != 0 || endp == value ||
230*7c478bd9Sstevel@tonic-gate i < 0 || *endp != '\0')
231*7c478bd9Sstevel@tonic-gate fatalerr("%s, line %d: illegal "
232*7c478bd9Sstevel@tonic-gate "resolution value\n", infile, line);
233*7c478bd9Sstevel@tonic-gate else
234*7c478bd9Sstevel@tonic-gate res = i;
235*7c478bd9Sstevel@tonic-gate nparams++;
236*7c478bd9Sstevel@tonic-gate } else if (strcmp(name, "QUANTUM") == 0) {
237*7c478bd9Sstevel@tonic-gate errno = 0;
238*7c478bd9Sstevel@tonic-gate i = (int)strtol(value, &endp, 10);
239*7c478bd9Sstevel@tonic-gate if (errno != 0 || endp == value ||
240*7c478bd9Sstevel@tonic-gate i < 0 || *endp != '\0')
241*7c478bd9Sstevel@tonic-gate fatalerr("%s, line %d: illegal time "
242*7c478bd9Sstevel@tonic-gate "quantum value\n", infile, line);
243*7c478bd9Sstevel@tonic-gate else
244*7c478bd9Sstevel@tonic-gate fss_quantum = i;
245*7c478bd9Sstevel@tonic-gate nparams++;
246*7c478bd9Sstevel@tonic-gate } else {
247*7c478bd9Sstevel@tonic-gate fatalerr("%s, line %d: invalid token\n",
248*7c478bd9Sstevel@tonic-gate infile, line);
249*7c478bd9Sstevel@tonic-gate }
250*7c478bd9Sstevel@tonic-gate } else {
251*7c478bd9Sstevel@tonic-gate fatalerr("%s, line %d: syntax error\n", infile, line);
252*7c478bd9Sstevel@tonic-gate }
253*7c478bd9Sstevel@tonic-gate }
254*7c478bd9Sstevel@tonic-gate if (line == 1 || nparams < 2)
255*7c478bd9Sstevel@tonic-gate fatalerr("cannot read settings from %s\n", infile);
256*7c478bd9Sstevel@tonic-gate if (res != HZ) {
257*7c478bd9Sstevel@tonic-gate hrtime.hrt_secs = 0;
258*7c478bd9Sstevel@tonic-gate hrtime.hrt_rem = fss_quantum;
259*7c478bd9Sstevel@tonic-gate hrtime.hrt_res = res;
260*7c478bd9Sstevel@tonic-gate if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
261*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't convert specified "
262*7c478bd9Sstevel@tonic-gate "resolution to ticks\n", basenm);
263*7c478bd9Sstevel@tonic-gate if ((fssadmin.fss_quantum = hrtconvert(&hrtime)) == -1)
264*7c478bd9Sstevel@tonic-gate fatalerr("%s, line %d: time quantum value out of "
265*7c478bd9Sstevel@tonic-gate "valid range\n", infile, line);
266*7c478bd9Sstevel@tonic-gate } else {
267*7c478bd9Sstevel@tonic-gate fssadmin.fss_quantum = (short)fss_quantum;
268*7c478bd9Sstevel@tonic-gate }
269*7c478bd9Sstevel@tonic-gate
270*7c478bd9Sstevel@tonic-gate pcadmin.pc_cid = pcinfo.pc_cid;
271*7c478bd9Sstevel@tonic-gate pcadmin.pc_cladmin = (char *)&fssadmin;
272*7c478bd9Sstevel@tonic-gate fssadmin.fss_cmd = FSS_SETADMIN;
273*7c478bd9Sstevel@tonic-gate
274*7c478bd9Sstevel@tonic-gate if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
275*7c478bd9Sstevel@tonic-gate fatalerr("%s: Can't set scheduler parameters, priocntl "
276*7c478bd9Sstevel@tonic-gate "system call failed (%s)\n", basenm, strerror(errno));
277*7c478bd9Sstevel@tonic-gate }
278