usr.sbin/config/mkheaders.c

   1 /*
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)mkheaders.c      8.1 (Berkeley) 6/6/93
  30  * $FreeBSD: src/usr.sbin/config/mkheaders.c,v 1.14.2.2 2001/01/23 00:09:32 peter Exp $
  31  */
  32
  33 /*
  34  * Make all the .h files for the optional entries
  35  */
  36
  37 #include <ctype.h>
  38 #include <err.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <sys/param.h>
  42 #include "config.h"
  43 #include "y.tab.h"
  44
  45 static void do_header(const char *, char *, int);
  46 static void do_count(const char *, char *, int);
  47 static char *toheader(const char *);
  48 static char *tomacro(const char *);
  49
  50 void
  51 headers(void)
  52 {
  53         struct file_list *fl;
  54         struct device *dp;
  55
  56         for (fl = ftab; fl != NULL; fl = fl->f_next)
  57                 if (fl->f_needs != NULL)
  58                         do_count(fl->f_needs, fl->f_needs, 1);
  59         for (dp = dtab; dp != NULL; dp = dp->d_next) {
  60                 if ((dp->d_type & TYPEMASK) == PSEUDO_DEVICE) {
  61                         if (!(dp->d_type & DEVDONE)) {
  62                                 printf("Warning: pseudo-device \"%s\" is unknown\n",
  63                                        dp->d_name);
  64                                 exit(1);
  65                         }
  66                 }
  67                 if ((dp->d_type & TYPEMASK) == DEVICE) {
  68                         if (!(dp->d_type & DEVDONE)) {
  69                                 printf("Warning: device \"%s\" is unknown\n",
  70                                        dp->d_name);
  71                                 exit(1);
  72                         }
  73                 }
  74         }
  75 }
  76
  77 /*
  78  * count all the devices of a certain type and recurse to count
  79  * whatever the device is connected to
  80  */
  81 static void
  82 do_count(const char *dev, char *hname, int search)
  83 {
  84         struct device *dp;
  85         int count, hicount;
  86         const char *mp;
  87
  88         /*
  89          * After this loop, "count" will be the actual number of units,
  90          * and "hicount" will be the highest unit declared. do_header()
  91          * must use the higher of these values.
  92          */
  93         for (dp = dtab; dp != NULL; dp = dp->d_next) {
  94                 if (strcmp(dp->d_name, dev) == 0) {
  95                         if ((dp->d_type & TYPEMASK) == PSEUDO_DEVICE)
  96                                 dp->d_type |= DEVDONE;
  97                         else if ((dp->d_type & TYPEMASK) == DEVICE)
  98                                 dp->d_type |= DEVDONE;
  99                 }
 100         }
 101         for (hicount = count = 0, dp = dtab; dp != NULL; dp = dp->d_next) {
 102                 if (dp->d_unit != -1 && strcmp(dp->d_name, dev) == 0) {
 103                         if ((dp->d_type & TYPEMASK) == PSEUDO_DEVICE) {
 104                                 count =
 105                                     dp->d_count != UNKNOWN ? dp->d_count : 1;
 106                                 break;
 107                         }
 108                         count++;
 109                         /*
 110                          * Allow holes in unit numbering,
 111                          * assumption is unit numbering starts
 112                          * at zero.
 113                          */
 114                         if (dp->d_unit + 1 > hicount)
 115                                 hicount = dp->d_unit + 1;
 116                         if (search) {
 117                                 mp = dp->d_conn;
 118                                 if (mp != NULL && dp->d_connunit < 0)
 119                                         mp = NULL;
 120                                 if (mp != NULL && strcmp(mp, "nexus") == 0)
 121                                         mp = NULL;
 122                                 if (mp != NULL) {
 123                                         do_count(mp, hname, 0);
 124                                         search = 0;
 125                                 }
 126                         }
 127                 }
 128         }
 129         do_header(dev, hname, count > hicount ? count : hicount);
 130 }
 131
 132 static void
 133 do_header(const char *dev, char *hname, int count)
 134 {
 135         char *file, *name, *inw;
 136         struct file_list *fl, *fl_head, *tflp;
 137         FILE *inf, *outf;
 138         int inc, oldcount;
 139
 140         file = toheader(hname);
 141         name = tomacro(dev);
 142         inf = fopen(file, "r");
 143         oldcount = -1;
 144         if (inf == NULL) {
 145                 outf = fopen(file, "w");
 146                 if (outf == NULL)
 147                         err(1, "%s", file);
 148                 fprintf(outf, "#define %s %d\n", name, count);
 149                 fclose(outf);
 150                 return;
 151         }
 152         fl_head = NULL;
 153         for (;;) {
 154                 char *cp;
 155                 if ((inw = get_word(inf)) == NULL || inw == (char *)EOF)
 156                         break;
 157                 if ((inw = get_word(inf)) == NULL || inw == (char *)EOF)
 158                         break;
 159                 inw = strdup(inw);
 160                 cp = get_word(inf);
 161                 if (cp == NULL || cp == (char *)EOF)
 162                         break;
 163                 inc = atoi(cp);
 164                 if (strcmp(inw, name) == 0) {
 165                         oldcount = inc;
 166                         inc = count;
 167                 }
 168                 cp = get_word(inf);
 169                 if (cp == (char *)EOF)
 170                         break;
 171                 fl = malloc(sizeof(*fl));
 172                 bzero(fl, sizeof(*fl));
 173                 fl->f_fn = inw;         /* malloced */
 174                 fl->f_type = inc;
 175                 fl->f_next = fl_head;
 176                 fl_head = fl;
 177         }
 178         fclose(inf);
 179         if (count == oldcount) {
 180                 for (fl = fl_head; fl != NULL; fl = tflp) {
 181                         tflp = fl->f_next;
 182                         free(fl->f_fn);
 183                         free(fl);
 184                 }
 185                 return;
 186         }
 187         if (oldcount == -1) {
 188                 fl = malloc(sizeof(*fl));
 189                 bzero(fl, sizeof(*fl));
 190                 fl->f_fn = strdup(name);
 191                 fl->f_type = count;
 192                 fl->f_next = fl_head;
 193                 fl_head = fl;
 194         }
 195         outf = fopen(file, "w");
 196         if (outf == NULL)
 197                 err(1, "%s", file);
 198         for (fl = fl_head; fl != NULL; fl = tflp) {
 199                 fprintf(outf,
 200                     "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
 201                 tflp = fl->f_next;
 202                 free(fl->f_fn);
 203                 free(fl);
 204         }
 205         fclose(outf);
 206 }
 207
 208 /*
 209  * convert a dev name to a .h file name
 210  */
 211 static char *
 212 toheader(const char *dev)
 213 {
 214         static char hbuf[MAXPATHLEN];
 215         static char udev[MAXPATHLEN];
 216
 217         snprintf(udev, sizeof(udev), "use_%s", dev);
 218
 219         snprintf(hbuf, sizeof(hbuf), "%s.h", path(udev));
 220         return(hbuf);
 221 }
 222
 223 /*
 224  * convert a dev name to a macro name
 225  */
 226 static char *
 227 tomacro(const char *dev)
 228 {
 229         static char mbuf[20];
 230         char *cp;
 231
 232         cp = mbuf;
 233         *cp++ = 'N';
 234         while (*dev != 0)
 235                 *cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
 236         *cp++ = 0;
 237         return(mbuf);
 238 }