OpenSolaris Launch

1 files changed, 356 insertions, 0 deletions

diff --git a/usr/src/cmd/dispadmin/fxdispadmin.c b/usr/src/cmd/dispadmin/fxdispadmin.c
new file mode 100644
index 0000000000..62d85e829d
--- /dev/null
+++ b/usr/src/cmd/dispadmin/fxdispadmin.c
@@ -0,0 +1,356 @@
+/*
+ * 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);
+}