522 lines
13 KiB
C
522 lines
13 KiB
C
/* $NetBSD: mkheaders.c,v 1.8 2006/09/04 18:42:14 christos Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)mkheaders.c 8.1 (Berkeley) 6/6/93
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/param.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <util.h>
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#include "defs.h"
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#ifdef notyet
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#include <crc_extern.h>
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#else
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#define fprint_global(fp, name, value) 1
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#endif
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static int emitcnt(struct nvlist *);
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static int emitlocs(void);
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static int emitopts(void);
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static int emitioconfh(void);
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static int emittime(void);
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static int herr(const char *, const char *, FILE *);
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static int locators_print(const char *, void *, void *);
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static int defopts_print(const char *, void *, void *);
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static char *cntname(const char *);
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static int fprintcnt(FILE *, struct nvlist *);
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static int fprintstr(FILE *, const char *);
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#define UNDEFINED ~0u
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/*
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* Make the various config-generated header files.
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*/
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int
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mkheaders(void)
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{
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struct files *fi;
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/*
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* Make headers containing counts, as needed.
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*/
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TAILQ_FOREACH(fi, &allfiles, fi_next) {
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if (fi->fi_flags & FI_HIDDEN)
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continue;
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if (fi->fi_flags & (FI_NEEDSCOUNT | FI_NEEDSFLAG) &&
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emitcnt(fi->fi_optf))
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return (1);
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}
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if (emitopts() || emitlocs() || emitioconfh() || emittime())
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return (1);
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return (0);
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}
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#ifdef notyet
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static int
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fprint_global(FILE *fp, const char *name, unsigned int value)
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{
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return fprintf(fp, "#ifdef _LOCORE\n"
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" .global _KERNEL_OPT_%s\n"
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" .set _KERNEL_OPT_%s,0x%x\n"
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"#else\n"
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"__asm(\" .global _KERNEL_OPT_%s\\n"
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" .set _KERNEL_OPT_%s,0x%x\");\n"
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"#endif\n",
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name, name, value,
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name, name, value);
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}
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/* Convert the option argument to a 32bit numder */
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static unsigned int
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global_hash(const char *str)
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{
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unsigned int h;
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char *ep;
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/* If the value is a valid numeric, just use it */
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h = strtoul(str, &ep, 0);
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if (*ep != 0)
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/* Otherwise shove through a 32bit CRC function */
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h = crc_buf(0, str, strlen(str));
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/* Avoid colliding with the value used for undefined options. */
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/* At least until I stop any options being set to zero */
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return h != UNDEFINED ? h : 0xcafebabe;
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}
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#endif
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static int
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fprintcnt(FILE *fp, struct nvlist *nv)
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{
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const char *name = cntname(nv->nv_name);
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if (fprintf(fp, "#define\t%s\t%d\n", name, nv->nv_int) < 0)
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return -1;
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if (fprint_global(fp, name, nv->nv_int) < 0)
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return -1;
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return 0;
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}
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static int
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emitcnt(struct nvlist *head)
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{
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char nfname[BUFSIZ], tfname[BUFSIZ];
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struct nvlist *nv;
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FILE *fp;
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(void)snprintf(nfname, sizeof(nfname), "%s.h", head->nv_name);
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(void)snprintf(tfname, sizeof(tfname), "tmp_%s", nfname);
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if ((fp = fopen(tfname, "w")) == NULL)
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return (herr("open", tfname, NULL));
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for (nv = head; nv != NULL; nv = nv->nv_next)
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if (fprintcnt(fp, nv) < 0)
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return (herr("writ", tfname, fp));
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if (fclose(fp) == EOF)
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return (herr("clos", tfname, NULL));
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return (moveifchanged(tfname, nfname));
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}
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/*
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* Output a string, preceded by a tab and possibly unescaping any quotes.
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* The argument will be output as is if it doesn't start with \".
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* Otherwise the first backslash in a \? sequence will be dropped.
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*/
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static int
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fprintstr(FILE *fp, const char *str)
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{
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int n;
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if (strncmp(str, "\\\"", 2))
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return fprintf(fp, "\t%s", str);
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if (fputc('\t', fp) < 0)
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return -1;
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for (n = 1; *str; str++, n++) {
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switch (*str) {
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case '\\':
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if (!*++str) /* XXX */
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str--;
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default:
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if (fputc(*str, fp) < 0)
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return -1;
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break;
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}
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}
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return n;
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}
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/*
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* Callback function for walking the option file hash table. We write out
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* the options defined for this file.
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*/
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static int
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defopts_print(const char *name, void *value, void *arg)
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{
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char tfname[BUFSIZ];
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struct nvlist *nv, *option;
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const char *opt_value;
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int isfsoption;
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FILE *fp;
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(void)snprintf(tfname, sizeof(tfname), "tmp_%s", name);
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if ((fp = fopen(tfname, "w")) == NULL)
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return (herr("open", tfname, NULL));
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for (nv = value; nv != NULL; nv = nv->nv_next) {
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isfsoption = OPT_FSOPT(nv->nv_name);
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if (nv->nv_flags & NV_OBSOLETE) {
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if (fprintf(fp, "/* %s `%s' is obsolete */\n",
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isfsoption ? "file system" : "option",
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nv->nv_name) < 0)
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goto bad;
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if (fprint_global(fp, nv->nv_name, 0xdeadbeef) < 0)
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goto bad;
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continue;
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}
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if (((option = ht_lookup(opttab, nv->nv_name)) == NULL &&
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(option = ht_lookup(fsopttab, nv->nv_name)) == NULL) &&
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(nv->nv_str == NULL)) {
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if (fprintf(fp, "/* %s `%s' not defined */\n",
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isfsoption ? "file system" : "option",
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nv->nv_name) < 0)
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goto bad;
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if (fprint_global(fp, nv->nv_name, UNDEFINED) < 0)
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goto bad;
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continue;
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}
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opt_value = option != NULL ? option->nv_str : nv->nv_str;
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if (isfsoption == 1)
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/* For filesysteme we'd output the lower case name */
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opt_value = NULL;
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if (fprintf(fp, "#define\t%s", nv->nv_name) < 0)
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goto bad;
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if (opt_value != NULL && fprintstr(fp, opt_value) < 0)
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goto bad;
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if (fputc('\n', fp) < 0)
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goto bad;
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if (fprint_global(fp, nv->nv_name,
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opt_value == NULL ? 1 : global_hash(opt_value)) < 0)
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goto bad;
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}
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if (fclose(fp) == EOF)
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return (herr("clos", tfname, NULL));
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return (moveifchanged(tfname, name));
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bad:
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return (herr("writ", tfname, fp));
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}
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/*
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* Emit the option header files.
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*/
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static int
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emitopts(void)
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{
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return (ht_enumerate(optfiletab, defopts_print, NULL));
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}
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/*
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* A callback function for walking the attribute hash table.
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* Emit CPP definitions of manifest constants for the locators on the
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* "name" attribute node (passed as the "value" parameter).
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*/
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static int
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locators_print(const char *name, void *value, void *arg)
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{
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struct attr *a;
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struct nvlist *nv;
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int i;
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char *locdup, *namedup;
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char *cp;
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FILE *fp = arg;
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a = value;
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if (a->a_locs) {
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if (strchr(name, ' ') != NULL || strchr(name, '\t') != NULL)
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/*
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* name contains a space; we can't generate
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* usable defines, so ignore it.
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*/
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return 0;
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locdup = estrdup(name);
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for (cp = locdup; *cp; cp++)
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if (islower((unsigned char)*cp))
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*cp = toupper((unsigned char)*cp);
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for (i = 0, nv = a->a_locs; nv; nv = nv->nv_next, i++) {
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if (strchr(nv->nv_name, ' ') != NULL ||
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strchr(nv->nv_name, '\t') != NULL)
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/*
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* name contains a space; we can't generate
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* usable defines, so ignore it.
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*/
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continue;
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namedup = estrdup(nv->nv_name);
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for (cp = namedup; *cp; cp++)
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if (islower((unsigned char)*cp))
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*cp = toupper((unsigned char)*cp);
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else if (*cp == ARRCHR)
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*cp = '_';
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if (fprintf(fp, "#define %sCF_%s %d\n",
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locdup, namedup, i) < 0)
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goto bad;
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if (nv->nv_str &&
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fprintf(fp, "#define %sCF_%s_DEFAULT %s\n",
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locdup, namedup, nv->nv_str) < 0)
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goto bad;
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free(namedup);
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}
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/* assert(i == a->a_loclen) */
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if (fprintf(fp, "#define %sCF_NLOCS %d\n",
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locdup, a->a_loclen) < 0)
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goto bad1;
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free(locdup);
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}
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return 0;
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bad:
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free(namedup);
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bad1:
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free(locdup);
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return 1;
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}
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/*
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* Build the "locators.h" file with manifest constants for all potential
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* locators in the configuration. Do this by enumerating the attribute
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* hash table and emitting all the locators for each attribute.
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*/
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static int
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emitlocs(void)
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{
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char *tfname;
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int rval;
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FILE *tfp;
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tfname = "tmp_locators.h";
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if ((tfp = fopen(tfname, "w")) == NULL)
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return (herr("open", tfname, NULL));
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rval = ht_enumerate(attrtab, locators_print, tfp);
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if (fclose(tfp) == EOF)
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return (herr("clos", tfname, NULL));
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if (rval)
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return (rval);
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return (moveifchanged(tfname, "locators.h"));
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}
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/*
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* Build the "ioconf.h" file with extern declarations for all configured
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* cfdrivers.
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*/
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static int
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emitioconfh(void)
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{
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const char *tfname;
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FILE *tfp;
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struct devbase *d;
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tfname = "tmp_ioconf.h";
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if ((tfp = fopen(tfname, "w")) == NULL)
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return (herr("open", tfname, NULL));
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TAILQ_FOREACH(d, &allbases, d_next) {
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if (!devbase_has_instances(d, WILD))
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continue;
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if (fprintf(tfp, "extern struct cfdriver %s_cd;\n",
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d->d_name) < 0) {
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(void)fclose(tfp);
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return (1);
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}
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}
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if (fclose(tfp) == EOF)
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return (herr("clos", tfname, NULL));
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return (moveifchanged(tfname, "ioconf.h"));
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}
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/*
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* Make a file that config_time.h can use as a source, if required.
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*/
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static int
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emittime(void)
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{
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FILE *fp;
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time_t t;
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struct tm *tm;
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char buf[128];
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t = time(NULL);
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tm = gmtime(&t);
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if ((fp = fopen("config_time.src", "w")) == NULL)
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return (herr("open", "config_time.src", NULL));
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if (strftime(buf, sizeof(buf), "%c %Z", tm) == 0)
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return (herr("strftime", "config_time.src", fp));
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if (fprintf(fp, "/* %s */\n"
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"#define CONFIG_TIME\t%2lld\n"
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"#define CONFIG_YEAR\t%2d\n"
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"#define CONFIG_MONTH\t%2d\n"
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"#define CONFIG_DATE\t%2d\n"
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"#define CONFIG_HOUR\t%2d\n"
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"#define CONFIG_MINS\t%2d\n"
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"#define CONFIG_SECS\t%2d\n",
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buf, (long long)t,
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tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec) < 0)
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return (herr("fprintf", "config_time.src", fp));
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if (fclose(fp) != 0)
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return (herr("close", "config_time.src", NULL));
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/*
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* *Don't* moveifchanged this file. Makefile.kern.inc will
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* handle that if it determines such a move is necessary.
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*/
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return (0);
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}
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/*
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* Compare two files. If nfname doesn't exist, or is different from
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* tfname, move tfname to nfname. Otherwise, delete tfname.
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*/
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int
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moveifchanged(const char *tfname, const char *nfname)
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{
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char tbuf[BUFSIZ], nbuf[BUFSIZ];
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FILE *tfp, *nfp;
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if ((tfp = fopen(tfname, "r")) == NULL)
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return (herr("open", tfname, NULL));
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if ((nfp = fopen(nfname, "r")) == NULL)
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goto moveit;
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while (fgets(tbuf, sizeof(tbuf), tfp) != NULL) {
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if (fgets(nbuf, sizeof(nbuf), nfp) == NULL) {
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/*
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* Old file has fewer lines.
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*/
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goto moveit;
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}
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if (strcmp(tbuf, nbuf) != 0)
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goto moveit;
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}
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/*
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* We've reached the end of the new file. Check to see if new file
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* has fewer lines than old.
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*/
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if (fgets(nbuf, sizeof(nbuf), nfp) != NULL) {
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/*
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* New file has fewer lines.
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*/
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goto moveit;
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}
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(void) fclose(nfp);
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(void) fclose(tfp);
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if (remove(tfname) == -1)
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return(herr("remov", tfname, NULL));
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return (0);
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moveit:
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/*
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* They're different, or the file doesn't exist.
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*/
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if (nfp)
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(void) fclose(nfp);
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if (tfp)
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(void) fclose(tfp);
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if (rename(tfname, nfname) == -1)
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return (herr("renam", tfname, NULL));
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return (0);
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}
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static int
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herr(const char *what, const char *fname, FILE *fp)
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{
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(void)fprintf(stderr, "%s: error %sing %s: %s\n",
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getprogname(), what, fname, strerror(errno));
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if (fp)
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(void)fclose(fp);
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return (1);
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}
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static char *
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cntname(const char *src)
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{
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char *dst;
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unsigned char c;
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static char buf[100];
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dst = buf;
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*dst++ = 'N';
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while ((c = *src++) != 0)
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*dst++ = islower(c) ? toupper(c) : c;
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*dst = 0;
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return (buf);
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}
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