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- /*
- * Copyright (c) 1980 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 5.10 (Berkeley) 7/1/91";
- #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),\t0,\t%d },\t/* %s */\n",
- major(dev), minor(dev), swap->f_swapsize, swap->f_fn);
- swap = swap->f_next;
- } while (swap && swap->f_type == SWAPSPEC);
- fprintf(fp, "\t{ 0, 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;
- }
-