usr/src/usr.sbin/config/main.c

/*
 * 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
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)main.c      5.17 (Berkeley) 7/1/91";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <stdio.h>
#include <ctype.h>
#include "y.tab.h"
#include "config.h"

static char *PREFIX;

/*
 * Config builds a set of files for building a UNIX
 * system given a description of the desired system.
 */
main(argc, argv)
        int argc;
        char **argv;
{

        extern char *optarg;
        extern int optind;
        struct stat buf;
        int ch;
        char *p;

        while ((ch = getopt(argc, argv, "gp")) != EOF)
                switch (ch) {
                case 'g':
                        debugging++;
                        break;
                case 'p':
                        profiling++;
                        break;
                case '?':
                default:
                        goto usage;
                }
        argc -= optind;
        argv += optind;

        if (argc != 1) {
usage:          fputs("usage: config [-gp] sysname\n", stderr);
                exit(1);
        }

        if (freopen(PREFIX = *argv, "r", stdin) == NULL) {
                perror(PREFIX);
                exit(2);
        }
        if (stat(p = path((char *)NULL), &buf)) {
                if (mkdir(p, 0777)) {
                        perror(p);
                        exit(2);
                }
        }
        else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
                fprintf(stderr, "config: %s isn't a directory.\n", p);
                exit(2);
        }

        dtab = NULL;
        confp = &conf_list;
        if (yyparse())
                exit(3);
        switch (machine) {

        case MACHINE_VAX:
                vax_ioconf();           /* Print ioconf.c */
                ubglue();               /* Create ubglue.s */
                break;

        case MACHINE_TAHOE:
                tahoe_ioconf();
                vbglue();
                break;

        case MACHINE_HP300:
                hp300_ioconf();
                hpglue();
                break;

        case MACHINE_I386:
                i386_ioconf();          /* Print ioconf.c */
                vector();               /* Create vector.s */
                break;

        default:
                printf("Specify machine type, e.g. ``machine vax''\n");
                exit(1);
        }
        /*
         * make symbolic links in compilation directory
         * for "sys" (to make genassym.c work along with #include <sys/xxx>)
         * and similarly for "machine".
         */
        {
        char xxx[80];

        (void) sprintf(xxx, "../../%s/include", machinename);
        (void) symlink(xxx, path("machine"));
        }
        makefile();                     /* build Makefile */
        headers();                      /* make a lot of .h files */
        swapconf();                     /* swap config files */
        printf("Don't forget to run \"make depend\"\n");
        exit(0);
}

/*
 * get_word
 *      returns EOF on end of file
 *      NULL on end of line
 *      pointer to the word otherwise
 */
char *
get_word(fp)
        register FILE *fp;
{
        static char line[80];
        register int ch;
        register char *cp;

        while ((ch = getc(fp)) != EOF)
                if (ch != ' ' && ch != '\t')
                        break;
        if (ch == EOF)
                return ((char *)EOF);
        if (ch == '\n')
                return (NULL);
        cp = line;
        *cp++ = ch;
        while ((ch = getc(fp)) != EOF) {
                if (isspace(ch))
                        break;
                *cp++ = ch;
        }
        *cp = 0;
        if (ch == EOF)
                return ((char *)EOF);
        (void) ungetc(ch, fp);
        return (line);
}

/*
 * get_quoted_word
 *      like get_word but will accept something in double or single quotes
 *      (to allow embedded spaces).
 */
char *
get_quoted_word(fp)
        register FILE *fp;
{
        static char line[256];
        register int ch;
        register char *cp;

        while ((ch = getc(fp)) != EOF)
                if (ch != ' ' && ch != '\t')
                        break;
        if (ch == EOF)
                return ((char *)EOF);
        if (ch == '\n')
                return (NULL);
        cp = line;
        if (ch == '"' || ch == '\'') {
                register int quote = ch;

                while ((ch = getc(fp)) != EOF) {
                        if (ch == quote)
                                break;
                        if (ch == '\n') {
                                *cp = 0;
                                printf("config: missing quote reading `%s'\n",
                                        line);
                                exit(2);
                        }
                        *cp++ = ch;
                }
        } else {
                *cp++ = ch;
                while ((ch = getc(fp)) != EOF) {
                        if (isspace(ch))
                                break;
                        *cp++ = ch;
                }
                if (ch != EOF)
                        (void) ungetc(ch, fp);
        }
        *cp = 0;
        if (ch == EOF)
                return ((char *)EOF);
        return (line);
}

/*
 * prepend the path to a filename
 */
char *
path(file)
        char *file;
{
        register char *cp;

#define CDIR    "../../compile/"
        cp = malloc((unsigned int)(sizeof(CDIR) + strlen(PREFIX) +
            (file ? strlen(file) : 0) + 2));
        (void) strcpy(cp, CDIR);
        (void) strcat(cp, PREFIX);
        if (file) {
                (void) strcat(cp, "/");
                (void) strcat(cp, file);
        }
        return (cp);
}