OpenSolaris_b135/cmd/dispadmin/fxdispadmin.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/priocntl.h>
#include <sys/fxpriocntl.h>
#include <sys/param.h>
#include <errno.h>
#include <sys/fx.h>
#include "dispadmin.h"
/*
* This file contains the class specific code implementing
* the fixed-priority dispadmin sub-command.
*/
#define BASENMSZ 16
extern char *basename();
static void get_fxdptbl(), set_fxdptbl();
static char usage[] = "usage: dispadmin -l\n"
"dispadmin -c FX -g [-r res]\n"
"dispadmin -c FX -s infile\n";
static char basenm[BASENMSZ];
static char cmdpath[256];
int
main(int argc, char **argv)
{
int c;
int lflag, gflag, rflag, sflag;
ulong_t res;
char *infile;
char *endp;
(void) strcpy(cmdpath, argv[0]);
(void) strcpy(basenm, basename(argv[0]));
lflag = gflag = rflag = sflag = 0;
while ((c = getopt(argc, argv, "lc:gr:s:")) != -1) {
switch (c) {
case 'l':
lflag++;
break;
case 'c':
if (strcmp(optarg, "FX") != 0)
fatalerr("error: %s executed for %s class, "
"%s is actually sub-command for FX class\n",
cmdpath, optarg, cmdpath);
break;
case 'g':
gflag++;
break;
case 'r':
rflag++;
errno = 0;
res = strtoul(optarg, &endp, 10);
if (res == 0 || errno != 0 || *endp != '\0')
fatalerr("%s: Can't convert to requested "
"resolution\n", basenm);
break;
case 's':
sflag++;
infile = optarg;
break;
case '?':
fatalerr(usage);
default:
break;
}
}
if (lflag) {
if (gflag || rflag || sflag)
fatalerr(usage);
(void) printf("FX\t(Fixed Priority)\n");
return (0);
} else if (gflag) {
if (sflag)
fatalerr(usage);
if (rflag == 0)
res = 1000;
get_fxdptbl(res);
return (0);
} else if (sflag) {
if (rflag)
fatalerr(usage);
set_fxdptbl(infile);
return (0);
} else {
fatalerr(usage);
}
return (1);
}
/*
* Retrieve the current fx_dptbl from memory, convert the time quantum
* values to the resolution specified by res and write the table to stdout.
*/
static void
get_fxdptbl(ulong_t res)
{
int i;
int fxdpsz;
pcinfo_t pcinfo;
pcadmin_t pcadmin;
fxadmin_t fxadmin;
fxdpent_t *fx_dptbl;
hrtimer_t hrtime;
(void) strcpy(pcinfo.pc_clname, "FX");
if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
fatalerr("%s: Can't get FX class ID, priocntl system call "
"failed with errno %d\n", basenm, errno);
pcadmin.pc_cid = pcinfo.pc_cid;
pcadmin.pc_cladmin = (char *)&fxadmin;
fxadmin.fx_cmd = FX_GETDPSIZE;
if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
"failed with errno %d\n", basenm, errno);
fxdpsz = fxadmin.fx_ndpents * sizeof (fxdpent_t);
if ((fx_dptbl = (fxdpent_t *)malloc(fxdpsz)) == NULL)
fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
fxadmin.fx_dpents = fx_dptbl;
fxadmin.fx_cmd = FX_GETDPTBL;
if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
fatalerr("%s: Can't get fx_dptbl, priocntl system call "
"failed with errno %d\n", basenm, errno);
(void) printf("# Fixed Priority Dispatcher Configuration\n");
(void) printf("RES=%ld\n\n", res);
(void) printf("# TIME QUANTUM PRIORITY\n");
(void) printf("# (fx_quantum) LEVEL\n");
for (i = 0; i < fxadmin.fx_ndpents; i++) {
if (res != HZ && fx_dptbl[i].fx_quantum != FX_TQINF) {
hrtime.hrt_secs = 0;
hrtime.hrt_rem = fx_dptbl[i].fx_quantum;
hrtime.hrt_res = HZ;
if (_hrtnewres(&hrtime, res, HRT_RNDUP) == -1)
fatalerr("%s: Can't convert to requested "
"resolution\n", basenm);
if ((fx_dptbl[i].fx_quantum = hrtconvert(&hrtime))
== -1)
fatalerr("%s: Can't express time quantum in "
"requested resolution,\n"
"try coarser resolution\n", basenm);
}
(void) printf("%10d # %3d\n",
fx_dptbl[i].fx_quantum, i);
}
}
/*
* Read the fx_dptbl values from infile, convert the time quantum values
* to HZ resolution, do a little sanity checking and overwrite the table
* in memory with the values from the file.
*/
static void
set_fxdptbl(char *infile)
{
int i;
int nfxdpents;
char *tokp;
pcinfo_t pcinfo;
pcadmin_t pcadmin;
fxadmin_t fxadmin;
fxdpent_t *fx_dptbl;
int linenum;
ulong_t res;
hrtimer_t hrtime;
FILE *fp;
char buf[512];
int wslength;
char *endp;
char name[512], value[512];
int len;
(void) strcpy(pcinfo.pc_clname, "FX");
if (priocntl(0, 0, PC_GETCID, (caddr_t)&pcinfo) == -1)
fatalerr("%s: Can't get FX class ID, priocntl system call "
"failed with errno %d\n", basenm, errno);
pcadmin.pc_cid = pcinfo.pc_cid;
pcadmin.pc_cladmin = (char *)&fxadmin;
fxadmin.fx_cmd = FX_GETDPSIZE;
if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
fatalerr("%s: Can't get fx_dptbl size, priocntl system call "
"failed with errno %d\n", basenm, errno);
nfxdpents = fxadmin.fx_ndpents;
if ((fx_dptbl =
(fxdpent_t *)malloc(nfxdpents * sizeof (fxdpent_t))) == NULL)
fatalerr("%s: Can't allocate memory for fx_dptbl\n", basenm);
if ((fp = fopen(infile, "r")) == NULL)
fatalerr("%s: Can't open %s for input\n", basenm, infile);
linenum = 0;
/*
* Find the first non-blank, non-comment line. A comment line
* is any line with '#' as the first non-white-space character.
*/
do {
if (fgets(buf, sizeof (buf), fp) == NULL)
fatalerr("%s: Too few lines in input table\n", basenm);
linenum++;
} while (buf[0] == '#' || buf[0] == '\0' ||
(wslength = strspn(buf, " \t\n")) == strlen(buf) ||
strchr(buf, '#') == buf + wslength);
/* LINTED - unbounded string specifier */
if (sscanf(buf, " %[^=]=%s \n%n", name, value, &len) == 2 &&
name[0] != '\0' && value[0] != '\0' && len == strlen(buf)) {
if (strcmp(name, "RES") == 0) {
errno = 0;
i = (int)strtol(value, &endp, 10);
if (errno != 0 || endp == value ||
i < 0 || *endp != '\0')
fatalerr("%s: Bad RES specification, "
"line %d of input file\n", basenm, linenum);
else
res = i;
} else {
fatalerr("%s: Bad RES specification, "
"line %d of input file\n", basenm, linenum);
}
}
/*
* The remainder of the input file should contain exactly enough
* non-blank, non-comment lines to fill the table (fx_ndpents lines).
* We assume that any non-blank, non-comment line is data for the
* table and fail if we find more or less than we need.
*/
for (i = 0; i < fxadmin.fx_ndpents; i++) {
/*
* Get the next non-blank, non-comment line.
*/
do {
if (fgets(buf, sizeof (buf), fp) == NULL)
fatalerr("%s: Too few lines in input table\n",
basenm);
linenum++;
} while (buf[0] == '#' || buf[0] == '\0' ||
(wslength = strspn(buf, " \t\n")) == strlen(buf) ||
strchr(buf, '#') == buf + wslength);
if ((tokp = strtok(buf, " \t")) == NULL)
fatalerr("%s: Too few values, line %d of input file\n",
basenm, linenum);
fx_dptbl[i].fx_quantum = atol(tokp);
if (fx_dptbl[i].fx_quantum <= 0) {
fatalerr("%s: fx_quantum value out of "
"valid range; line %d of input,\n"
"table not overwritten\n", basenm, linenum);
} else if (res != HZ) {
hrtime.hrt_secs = 0;
hrtime.hrt_rem = fx_dptbl[i].fx_quantum;
hrtime.hrt_res = res;
if (_hrtnewres(&hrtime, HZ, HRT_RNDUP) == -1)
fatalerr("%s: Can't convert specified "
"resolution to ticks\n", basenm);
if ((fx_dptbl[i].fx_quantum =
hrtconvert(&hrtime)) == -1)
fatalerr("%s: fx_quantum value out of "
"valid range; line %d of input,\n"
"table not overwritten\n", basenm, linenum);
}
if ((tokp = strtok(NULL, " \t")) != NULL && tokp[0] != '#')
fatalerr("%s: Too many values, line %d of input file\n",
basenm, linenum);
}
/*
* We've read enough lines to fill the table. We fail
* if the input file contains any more.
*/
while (fgets(buf, sizeof (buf), fp) != NULL) {
if (buf[0] != '#' && buf[0] != '\0' &&
(wslength = strspn(buf, " \t\n")) != strlen(buf) &&
strchr(buf, '#') != buf + wslength)
fatalerr("%s: Too many lines in input table\n",
basenm);
}
fxadmin.fx_dpents = fx_dptbl;
fxadmin.fx_cmd = FX_SETDPTBL;
if (priocntl(0, 0, PC_ADMIN, (caddr_t)&pcadmin) == -1)
fatalerr("%s: Can't set fx_dptbl, priocntl system call failed "
"with errno %d\n", basenm, errno);
}