BSD 4.4 Lite usr.sbin Sources

1 files changed, 216 insertions, 0 deletions

diff --git a/usr.sbin/config/mkswapconf.c b/usr.sbin/config/mkswapconf.c
new file mode 100644
index 0000000..e499973
--- /dev/null
+++ b/usr.sbin/config/mkswapconf.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 1980, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)mkswapconf.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+/*
+ * Build a swap configuration file.
+ */
+#include "config.h"
+
+#include <stdio.h>
+#include <ctype.h>
+
+swapconf()
+{
+	register struct file_list *fl;
+	struct file_list *do_swap();
+
+	fl = conf_list;
+	while (fl) {
+		if (fl->f_type != SYSTEMSPEC) {
+			fl = fl->f_next;
+			continue;
+		}
+		fl = do_swap(fl);
+	}
+}
+
+struct file_list *
+do_swap(fl)
+	register struct file_list *fl;
+{
+	FILE *fp;
+	char  swapname[80];
+	register struct file_list *swap;
+	dev_t dev;
+
+	if (eq(fl->f_fn, "generic")) {
+		fl = fl->f_next;
+		return (fl->f_next);
+	}
+	(void) sprintf(swapname, "swap%s.c", fl->f_fn);
+	fp = fopen(path(swapname), "w");
+	if (fp == 0) {
+		perror(path(swapname));
+		exit(1);
+	}
+	fprintf(fp, "#include \"sys/param.h\"\n");
+	fprintf(fp, "#include \"sys/conf.h\"\n");
+	fprintf(fp, "\n");
+	/*
+	 * If there aren't any swap devices
+	 * specified, just return, the error
+	 * has already been noted.
+	 */
+	swap = fl->f_next;
+	if (swap == 0 || swap->f_type != SWAPSPEC) {
+		(void) unlink(path(swapname));
+		fclose(fp);
+		return (swap);
+	}
+	fprintf(fp, "dev_t\trootdev = makedev(%d, %d);\n",
+		major(fl->f_rootdev), minor(fl->f_rootdev));
+	fprintf(fp, "dev_t\tdumpdev = makedev(%d, %d);\n",
+		major(fl->f_dumpdev), minor(fl->f_dumpdev));
+	fprintf(fp, "\n");
+	fprintf(fp, "struct\tswdevt swdevt[] = {\n");
+	do {
+		dev = swap->f_swapdev;
+		fprintf(fp, "\t{ makedev(%d, %d),\t%d,\t%d },\t/* %s */\n",
+		    major(dev), minor(dev), swap->f_swapflag,
+		    swap->f_swapsize, swap->f_fn);
+		swap = swap->f_next;
+	} while (swap && swap->f_type == SWAPSPEC);
+	fprintf(fp, "\t{ NODEV, 0, 0 }\n");
+	fprintf(fp, "};\n");
+	fclose(fp);
+	return (swap);
+}
+
+static	int devtablenotread = 1;
+static	struct devdescription {
+	char	*dev_name;
+	int	dev_major;
+	struct	devdescription *dev_next;
+} *devtable;
+
+/*
+ * Given a device name specification figure out:
+ *	major device number
+ *	partition
+ *	device name
+ *	unit number
+ * This is a hack, but the system still thinks in
+ * terms of major/minor instead of string names.
+ */
+dev_t
+nametodev(name, defunit, defpartition)
+	char *name;
+	int defunit;
+	char defpartition;
+{
+	char *cp, partition;
+	int unit;
+	register struct devdescription *dp;
+
+	cp = name;
+	if (cp == 0) {
+		fprintf(stderr, "config: internal error, nametodev\n");
+		exit(1);
+	}
+	while (*cp && !isdigit(*cp))
+		cp++;
+	unit = *cp ? atoi(cp) : defunit;
+	if (unit < 0 || unit > 31) {
+		fprintf(stderr,
+"config: %s: invalid device specification, unit out of range\n", name);
+		unit = defunit;			/* carry on more checking */
+	}
+	if (*cp) {
+		*cp++ = '\0';
+		while (*cp && isdigit(*cp))
+			cp++;
+	}
+	partition = *cp ? *cp : defpartition;
+	if (partition < 'a' || partition > 'h') {
+		fprintf(stderr,
+"config: %c: invalid device specification, bad partition\n", *cp);
+		partition = defpartition;	/* carry on */
+	}
+	if (devtablenotread)
+		initdevtable();
+	for (dp = devtable; dp; dp = dp->dev_next)
+		if (eq(name, dp->dev_name))
+			break;
+	if (dp == 0) {
+		fprintf(stderr, "config: %s: unknown device\n", name);
+		return (NODEV);
+	}
+	return (makedev(dp->dev_major, (unit << 3) + (partition - 'a')));
+}
+
+char *
+devtoname(dev)
+	dev_t dev;
+{
+	char buf[80]; 
+	register struct devdescription *dp;
+
+	if (devtablenotread)
+		initdevtable();
+	for (dp = devtable; dp; dp = dp->dev_next)
+		if (major(dev) == dp->dev_major)
+			break;
+	if (dp == 0)
+		dp = devtable;
+	(void) sprintf(buf, "%s%d%c", dp->dev_name,
+		minor(dev) >> 3, (minor(dev) & 07) + 'a');
+	return (ns(buf));
+}
+
+initdevtable()
+{
+	char buf[BUFSIZ];
+	int maj;
+	register struct devdescription **dp = &devtable;
+	FILE *fp;
+
+	(void) sprintf(buf, "../conf/devices.%s", machinename);
+	fp = fopen(buf, "r");
+	if (fp == NULL) {
+		fprintf(stderr, "config: can't open %s\n", buf);
+		exit(1);
+	}
+	while (fscanf(fp, "%s\t%d\n", buf, &maj) == 2) {
+		*dp = (struct devdescription *)malloc(sizeof (**dp));
+		(*dp)->dev_name = ns(buf);
+		(*dp)->dev_major = maj;
+		dp = &(*dp)->dev_next;
+	}
+	*dp = 0;
+	fclose(fp);
+	devtablenotread = 0;
+}