/*      $NetBSD: mkioconf.c,v 1.37 2026/01/17 02:01:39 thorpej Exp $    */

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * 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, Lawrence Berkeley Laboratories.
 *
 * 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. 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.
 *
 *      from: @(#)mkioconf.c    8.1 (Berkeley) 6/6/93
 */

#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif

#include <sys/cdefs.h>
__RCSID("$NetBSD: mkioconf.c,v 1.37 2026/01/17 02:01:39 thorpej Exp $");

#include <sys/param.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "defs.h"

/*
 * Make ioconf.c.
 */
static int cf_locators_print(const char *, void *, void *);
static int cforder(const void *, const void *);
static void emitcfdata(FILE *);
static void emitcfdrivers(FILE *);
static void emitexterns(FILE *);
static void emitcfattachinit(FILE *);
static void emithdr(FILE *);
static void emitloc(FILE *);
static void emitpseudo(FILE *);
static void emitparents(FILE *);
static void emitroots(FILE *);
static void emitname2blk(FILE *);

#define SEP(pos, max)   (((u_int)(pos) % (max)) == 0 ? "\n\t" : " ")

#define ARRNAME(n, l) (strchr((n), ARRCHR) && strncmp((n), (l), strlen((l))) == 0)

/*
 * NEWLINE can only be used in the emitXXX functions.
 * In most cases it can be subsumed into an fprintf.
 */
#define NEWLINE         putc('\n', fp)

int
mkioconf(void)
{
        FILE *fp;

        qsort(packed, npacked, sizeof *packed, cforder);
        if ((fp = fopen("ioconf.c.tmp", "w")) == NULL) {
                warn("cannot write ioconf.c");
                return (1);
        }

        fprintf(fp, "#include \"ioconf.h\"\n");
        if (ioconfname)
                fprintf(fp, "#define IOCONF %s\n", ioconfname);

        emithdr(fp);
        emitcfdrivers(fp);
        emitexterns(fp);
        emitloc(fp);
        emitparents(fp);
        emitcfdata(fp);
        emitcfattachinit(fp);

        if (ioconfname == NULL) {
                emitroots(fp);
                emitpseudo(fp);
                if (!do_devsw)
                        emitname2blk(fp);
        }

        fflush(fp);
        if (ferror(fp)) {
                warn("error writing ioconf.c");
                (void)fclose(fp);
#if 0
                (void)unlink("ioconf.c.tmp");
#endif
                return (1);
        }

        (void)fclose(fp);
        if (moveifchanged("ioconf.c.tmp", "ioconf.c") != 0) {
                warn("error renaming ioconf.c");
                return (1);
        }
        return (0);
}

static int
cforder(const void *a, const void *b)
{
        int n1, n2;

        n1 = (*(const struct devi * const *)a)->i_cfindex;
        n2 = (*(const struct devi * const *)b)->i_cfindex;
        if (n1 < n2)
                return -1;
        else if (n1 > n2)
                return +1;
        else
                abort();        /* no ties possible */
}

static void
emithdr(FILE *ofp)
{
        FILE *ifp;
        size_t n;
        char ifnbuf[200], buf[BUFSIZ];
        char *ifn;

        autogen_comment(ofp, "ioconf.c");

        (void)snprintf(ifnbuf, sizeof(ifnbuf), "%s/arch/%s/conf/ioconf.incl.%s",
            srcdir,
            machine ? machine : "(null)", machine ? machine : "(null)");
        ifn = ifnbuf;
        if ((ifp = fopen(ifn, "r")) != NULL) {
                while ((n = fread(buf, 1, sizeof(buf), ifp)) > 0)
                        (void)fwrite(buf, 1, n, ofp);
                if (ferror(ifp))
                        err(EXIT_FAILURE, "error reading %s", ifn);
                (void)fclose(ifp);
        } else {
                fputs("#include <sys/param.h>\n"
                        "#include <sys/conf.h>\n"
                        "#include <sys/device.h>\n"
                        "#include <sys/mount.h>\n", ofp);
        }
}

/*
 * Emit an initialized array of character strings describing this
 * attribute's locators.
 */
static int
cf_locators_print(const char *name, void *value, void *arg)
{
        struct attr *a;
        struct loclist *ll;
        FILE *fp = arg;

        a = value;
        if (!a->a_iattr)
                return (0);
        if (ht_lookup(selecttab, name) == NULL)
                return (0);

        if (a->a_locs) {
                fprintf(fp,
                    "static const struct cfiattrdata %scf_iattrdata = {\n",
                            name);
                fprintf(fp, "\t\"%s\", %d, {\n", name, a->a_loclen);
                for (ll = a->a_locs; ll; ll = ll->ll_next)
                        fprintf(fp, "\t\t{ \"%s\", \"%s\", %s },\n",
                                ll->ll_name,
                                (ll->ll_string ? ll->ll_string : "NULL"),
                                (ll->ll_string ? ll->ll_string : "0"));
                fprintf(fp, "\t}\n};\n");
        } else {
                fprintf(fp,
                    "static const struct cfiattrdata %scf_iattrdata = {\n"
                    "\t\"%s\", 0, {\n\t\t{ NULL, NULL, 0 },\n\t}\n};\n",
                    name, name);
        }

        return 0;
}

static void
emitcfdrivers(FILE *fp)
{
        struct devbase *d;
        struct attrlist *al;
        struct attr *a;
        int has_iattrs;

        NEWLINE;
        ht_enumerate(attrtab, cf_locators_print, fp);

        NEWLINE;
        TAILQ_FOREACH(d, &allbases, d_next) {
                if (!devbase_has_instances(d, WILD))
                        continue;
                has_iattrs = 0;
                for (al = d->d_attrs; al != NULL; al = al->al_next) {
                        a = al->al_this;
                        if (a->a_iattr == 0)
                                continue;
                        if (has_iattrs == 0)
                                fprintf(fp,
                                    "static const struct cfiattrdata * const %s_attrs[] = { ",
                                    d->d_name);
                        has_iattrs = 1;
                        fprintf(fp, "&%scf_iattrdata, ", a->a_name);
                }
                if (has_iattrs)
                        fprintf(fp, "NULL };\n");
                fprintf(fp, "CFDRIVER_DECL(%s, %s, ", d->d_name, /* ) */
                    d->d_classattr != NULL ? d->d_classattr->a_devclass
                                           : "DV_DULL");
                if (has_iattrs)
                        fprintf(fp, "%s_attrs", d->d_name);
                else
                        fprintf(fp, "NULL");
                fprintf(fp, /* ( */ ");\n\n");
        }

        NEWLINE;

        fprintf(fp,
            "%sstruct cfdriver * const cfdriver_%s_%s[] = {\n",
            ioconfname ? "static " : "",
            ioconfname ? "ioconf" : "list",
            ioconfname ? ioconfname : "initial");

        TAILQ_FOREACH(d, &allbases, d_next) {
                if (!devbase_has_instances(d, WILD))
                        continue;
                fprintf(fp, "\t&%s_cd,\n", d->d_name);
        }
        fprintf(fp, "\tNULL\n};\n");
}

static void
emitexterns(FILE *fp)
{
        struct deva *da;

        NEWLINE;
        TAILQ_FOREACH(da, &alldevas, d_next) {
                if (!deva_has_instances(da, WILD))
                        continue;
                fprintf(fp, "extern struct cfattach %s_ca;\n",
                            da->d_name);
        }
}

static void
emitcfattachinit(FILE *fp)
{
        struct attrlist *al;
        struct devbase *d;
        struct deva *da;
        int has_iattrs;

        NEWLINE;
        TAILQ_FOREACH(d, &allbases, d_next) {
                if (!devbase_has_instances(d, WILD))
                        continue;
                if (d->d_ahead == NULL)
                        continue;

                fprintf(fp,
                    "static struct cfattach * const %s_cfattachinit[] = {\n\t",
                            d->d_name);
                for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
                        if (!deva_has_instances(da, WILD))
                                continue;
                        fprintf(fp, "&%s_ca, ", da->d_name);
                }
                fprintf(fp, "NULL\n};\n");
        }

        has_iattrs = 0;
        TAILQ_FOREACH(d, &allbases, d_next) {
                if (!devbase_has_instances(d, WILD))
                        continue;
                if (d->d_ahead == NULL)
                        continue;

                for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
                        if (!deva_has_instances(da, WILD))
                                continue;
                        if (da->d_has_iattrs == 0)
                                continue;

                        for (al = da->d_attrs; al != NULL; al = al->al_next) {
                                if (al->al_this->a_iattr) {
                                        if (has_iattrs == 0) {
                                                NEWLINE;
                                                has_iattrs = 1;
                                        }
                                        fprintf(fp,
            "static struct cfattachiattr %s_cfattachiattr = {\n\t"
            "{ NULL }, &%s_ca, &%scf_iattrdata\n};\n",
                                            da->d_name, da->d_name,
                                            al->al_this->a_name);
                                }
                        }
                }
        }

        if (has_iattrs) {
                NEWLINE;
                TAILQ_FOREACH(d, &allbases, d_next) {
                        if (!devbase_has_instances(d, WILD))
                                continue;
                        if (d->d_ahead == NULL)
                                continue;

                        for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
                                if (!deva_has_instances(da, WILD))
                                        continue;
                                if (da->d_has_iattrs == 0)
                                        continue;
                                fprintf(fp,
    "static struct cfattachiattr * const %s_cfattachiattrs[] = {\n\t",
                                    d->d_name);
                                for (al = da->d_attrs; al != NULL;
                                     al = al->al_next) {
                                        if (al->al_this->a_iattr) {
                                                fprintf(fp,
                                                    "&%s_cfattachiattr, ",
                                                    da->d_name);
                                        }
                                }
                                fprintf(fp, "NULL\n};\n");
                        }
                }
        }

        NEWLINE;
        fprintf(fp, "%sconst struct cfattachinit cfattach%s%s[] = {\n",
            ioconfname ? "static " : "",
            ioconfname ? "_ioconf_" : "init",
            ioconfname ? ioconfname : "");

        TAILQ_FOREACH(d, &allbases, d_next) {
                if (!devbase_has_instances(d, WILD))
                        continue;
                if (d->d_ahead == NULL)
                        continue;

                fprintf(fp, "\t{ \"%s\", %s_cfattachinit, ",
                            d->d_name, d->d_name);

                for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
                        if (!deva_has_instances(da, WILD))
                                continue;
                        if (da->d_has_iattrs)
                                break;
                }
                if (da != NULL)
                        fprintf(fp, "%s_cfattachiattrs", d->d_name);
                else
                        fprintf(fp, "NULL");
                fprintf(fp, " },\n");
        }

        fprintf(fp, "\t{ NULL, NULL, NULL }\n};\n");
}

static void
emitloc(FILE *fp)
{
        int i;

        if (locators.used != 0) {
                fprintf(fp, "\n/* locators */\n"
                        "static int loc[%d] = {", locators.used);
                for (i = 0; i < locators.used; i++)
                        fprintf(fp, "%s%s,", SEP(i, 8), locators.vec[i]);
                fprintf(fp, "\n};\n");
        }
}

/*
 * Emit static parent data.
 */
static void
emitparents(FILE *fp)
{
        struct pspec *p;
        int inst = -1;

        NEWLINE;
        TAILQ_FOREACH(p, &allpspecs, p_list) {
                if (p->p_devs == NULL || p->p_active != DEVI_ACTIVE)
                        continue;
                if (inst >= p->p_inst)
                        continue;
                inst = p->p_inst;
                fprintf(fp,
                    "static const struct cfparent pspec%d = {\n", p->p_inst);
                fprintf(fp, "\t\"%s\", ", p->p_iattr->a_name);
                if (p->p_atdev != NULL) {
                        fprintf(fp, "\"%s\", ", p->p_atdev->d_name);
                        if (p->p_atunit == WILD)
                                fprintf(fp, "DVUNIT_ANY");
                        else
                                fprintf(fp, "%d", p->p_atunit);
                } else
                        fprintf(fp, "NULL, 0");
                fprintf(fp, "\n};\n");
        }
}

/*
 * Emit the cfdata array.
 */
static void
emitcfdata(FILE *fp)
{
        struct devi **p, *i;
        struct pspec *ps;
        int unit, v;
        const char *state, *basename, *attachment;
        struct loclist *ll;
        struct attr *a;
        const char *loc;
        char locbuf[20];
        const char *lastname = "";

        fprintf(fp, "\n"
                "#define NORM FSTATE_NOTFOUND\n"
                "#define STAR FSTATE_STAR\n"
                "\n"
                "%sstruct cfdata cfdata%s%s[] = {\n"
                "    /* driver           attachment    unit state "
                "     loc   flags  pspec */\n",
                    ioconfname ? "static " : "",
                    ioconfname ? "_ioconf_" : "",
                    ioconfname ? ioconfname : "");
        for (p = packed; (i = *p) != NULL; p++) {
                /* the description */
                fprintf(fp, "/*%3d: %s at ", i->i_cfindex, i->i_name);
                if ((ps = i->i_pspec) != NULL) {
                        if (ps->p_atdev != NULL &&
                            ps->p_atunit != WILD) {
                                fprintf(fp, "%s%d", ps->p_atdev->d_name,
                                            ps->p_atunit);
                        } else if (ps->p_atdev != NULL) {
                                fprintf(fp, "%s?", ps->p_atdev->d_name);
                        } else {
                                fprintf(fp, "%s?", ps->p_iattr->a_name);
                        }

                        a = ps->p_iattr;
                        for (ll = a->a_locs, v = 0; ll != NULL;
                             ll = ll->ll_next, v++) {
                                if (ARRNAME(ll->ll_name, lastname)) {
                                        fprintf(fp, " %s %s",
                                            ll->ll_name, i->i_locs[v]);
                                } else {
                                        fprintf(fp, " %s %s",
                                                    ll->ll_name,
                                                    i->i_locs[v]);
                                        lastname = ll->ll_name;
                                }
                        }
                } else {
                        a = NULL;
                        fputs("root", fp);
                }

                fputs(" */\n", fp);

                /* then the actual defining line */
                basename = i->i_base->d_name;
                attachment = i->i_atdeva->d_name;
                if (i->i_unit == STAR) {
                        unit = i->i_base->d_umax;
                        state = "STAR";
                } else {
                        unit = i->i_unit;
                        state = "NORM";
                }
                if (i->i_locoff >= 0) {
                        (void)snprintf(locbuf, sizeof(locbuf), "loc+%3d",
                            i->i_locoff);
                        loc = locbuf;
                } else
                        loc = "NULL";
                fprintf(fp, "    { \"%s\",%s\"%s\",%s%2d, %s, %7s, %#6x, ",
                            basename, strlen(basename) < 7 ? "\t\t"
                                                           : "\t",
                            attachment, strlen(attachment) < 5 ? "\t\t"
                                                               : "\t",
                            unit, state, loc, i->i_cfflags);
                if (ps != NULL)
                        fprintf(fp, "&pspec%d },\n", ps->p_inst);
                else
                        fputs("NULL },\n", fp);
        }
        fprintf(fp, "    { %s,%s%s,%s%2d, %s, %7s, %#6x, %s }\n};\n",
            "NULL", "\t\t", "NULL", "\t\t", 0, "   0", "NULL", 0, "NULL");
}

/*
 * Emit the table of potential roots.
 */
static void
emitroots(FILE *fp)
{
        struct devi **p, *i;

        fputs("\nconst short cfroots[] = {\n", fp);
        for (p = packed; (i = *p) != NULL; p++) {
                if (i->i_at != NULL)
                        continue;
                if (i->i_unit != 0 &&
                    (i->i_unit != STAR || i->i_base->d_umax != 0))
                        warnx("warning: `%s at root' is not unit 0", i->i_name);
                fprintf(fp, "\t%2d /* %s */,\n",
                    i->i_cfindex, i->i_name);
        }
        fputs("\t-1\n};\n", fp);
}

/*
 * Emit pseudo-device initialization.
 */
static void
emitpseudo(FILE *fp)
{
        struct devi *i;
        struct devbase *d;

        fputs("\n/* pseudo-devices */\n", fp);
        fputs("\nconst struct pdevinit pdevinit[] = {\n", fp);
        TAILQ_FOREACH(i, &allpseudo, i_next) {
                d = i->i_base;
                fprintf(fp, "\t{ %sattach, %d },\n",
                    d->d_name, d->d_umax);
        }
        fputs("\t{ 0, 0 }\n};\n", fp);
}

/*
 * Emit name to major block number table.
 */
void
emitname2blk(FILE *fp)
{
        struct devbase *dev;

        fputs("\n/* device name to major block number */\n", fp);

        fprintf(fp, "struct devnametobdevmaj dev_name2blk[] = {\n");

        TAILQ_FOREACH(dev, &allbases, d_next) {
                if (dev->d_major == NODEVMAJOR)
                        continue;

                fprintf(fp, "\t{ \"%s\", %d },\n",
                            dev->d_name, dev->d_major);
        }
        fprintf(fp, "\t{ NULL, 0 }\n};\n");
}