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mkioconf.c revision 1.35 
      1 /*	$NetBSD: mkioconf.c,v 1.35 2017/11/19 01:46:29 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This software was developed by the Computer Systems Engineering group
      8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  * contributed to Berkeley.
     10  *
     11  * All advertising materials mentioning features or use of this software
     12  * must display the following acknowledgement:
     13  *	This product includes software developed by the University of
     14  *	California, Lawrence Berkeley Laboratories.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	from: @(#)mkioconf.c	8.1 (Berkeley) 6/6/93
     41  */
     42 
     43 #if HAVE_NBTOOL_CONFIG_H
     44 #include "nbtool_config.h"
     45 #endif
     46 
     47 #include <sys/cdefs.h>
     48 __RCSID("$NetBSD: mkioconf.c,v 1.35 2017/11/19 01:46:29 christos Exp $");
     49 
     50 #include <sys/param.h>
     51 #include <err.h>
     52 #include <errno.h>
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <string.h>
     56 #include "defs.h"
     57 
     58 /*
     59  * Make ioconf.c.
     60  */
     61 static int cf_locators_print(const char *, void *, void *);
     62 static int cforder(const void *, const void *);
     63 static void emitcfdata(FILE *);
     64 static void emitcfdrivers(FILE *);
     65 static void emitexterns(FILE *);
     66 static void emitcfattachinit(FILE *);
     67 static void emithdr(FILE *);
     68 static void emitloc(FILE *);
     69 static void emitpseudo(FILE *);
     70 static void emitparents(FILE *);
     71 static void emitroots(FILE *);
     72 static void emitname2blk(FILE *);
     73 
     74 #define	SEP(pos, max)	(((u_int)(pos) % (max)) == 0 ? "\n\t" : " ")
     75 
     76 #define ARRNAME(n, l) (strchr((n), ARRCHR) && strncmp((n), (l), strlen((l))) == 0)
     77 
     78 /*
     79  * NEWLINE can only be used in the emitXXX functions.
     80  * In most cases it can be subsumed into an fprintf.
     81  */
     82 #define	NEWLINE		putc('\n', fp)
     83 
     84 int
     85 mkioconf(void)
     86 {
     87 	FILE *fp;
     88 
     89 	qsort(packed, npacked, sizeof *packed, cforder);
     90 	if ((fp = fopen("ioconf.c.tmp", "w")) == NULL) {
     91 		warn("cannot write ioconf.c");
     92 		return (1);
     93 	}
     94 
     95 	fprintf(fp, "#include \"ioconf.h\"\n");
     96 	if (ioconfname)
     97 		fprintf(fp, "#define IOCONF %s\n", ioconfname);
     98 
     99 	emithdr(fp);
    100 	emitcfdrivers(fp);
    101 	emitexterns(fp);
    102 	emitloc(fp);
    103 	emitparents(fp);
    104 	emitcfdata(fp);
    105 	emitcfattachinit(fp);
    106 
    107 	if (ioconfname == NULL) {
    108 		emitroots(fp);
    109 		emitpseudo(fp);
    110 		if (!do_devsw)
    111 			emitname2blk(fp);
    112 	}
    113 
    114 	fflush(fp);
    115 	if (ferror(fp)) {
    116 		warn("error writing ioconf.c");
    117 		(void)fclose(fp);
    118 #if 0
    119 		(void)unlink("ioconf.c.tmp");
    120 #endif
    121 		return (1);
    122 	}
    123 
    124 	(void)fclose(fp);
    125 	if (moveifchanged("ioconf.c.tmp", "ioconf.c") != 0) {
    126 		warn("error renaming ioconf.c");
    127 		return (1);
    128 	}
    129 	return (0);
    130 }
    131 
    132 static int
    133 cforder(const void *a, const void *b)
    134 {
    135 	int n1, n2;
    136 
    137 	n1 = (*(const struct devi * const *)a)->i_cfindex;
    138 	n2 = (*(const struct devi * const *)b)->i_cfindex;
    139 	return (n1 - n2);
    140 }
    141 
    142 static void
    143 emithdr(FILE *ofp)
    144 {
    145 	FILE *ifp;
    146 	size_t n;
    147 	char ifnbuf[200], buf[BUFSIZ];
    148 	char *ifn;
    149 
    150 	autogen_comment(ofp, "ioconf.c");
    151 
    152 	(void)snprintf(ifnbuf, sizeof(ifnbuf), "%s/arch/%s/conf/ioconf.incl.%s",
    153 	    srcdir,
    154 	    machine ? machine : "(null)", machine ? machine : "(null)");
    155 	ifn = ifnbuf;
    156 	if ((ifp = fopen(ifn, "r")) != NULL) {
    157 		while ((n = fread(buf, 1, sizeof(buf), ifp)) > 0)
    158 			(void)fwrite(buf, 1, n, ofp);
    159 		if (ferror(ifp))
    160 			err(EXIT_FAILURE, "error reading %s", ifn);
    161 		(void)fclose(ifp);
    162 	} else {
    163 		fputs("#include <sys/param.h>\n"
    164 			"#include <sys/conf.h>\n"
    165 			"#include <sys/device.h>\n"
    166 			"#include <sys/mount.h>\n", ofp);
    167 	}
    168 }
    169 
    170 /*
    171  * Emit an initialized array of character strings describing this
    172  * attribute's locators.
    173  */
    174 static int
    175 cf_locators_print(const char *name, void *value, void *arg)
    176 {
    177 	struct attr *a;
    178 	struct loclist *ll;
    179 	FILE *fp = arg;
    180 
    181 	a = value;
    182 	if (!a->a_iattr)
    183 		return (0);
    184 	if (ht_lookup(selecttab, name) == NULL)
    185 		return (0);
    186 
    187 	if (a->a_locs) {
    188 		fprintf(fp,
    189 		    "static const struct cfiattrdata %scf_iattrdata = {\n",
    190 			    name);
    191 		fprintf(fp, "\t\"%s\", %d, {\n", name, a->a_loclen);
    192 		for (ll = a->a_locs; ll; ll = ll->ll_next)
    193 			fprintf(fp, "\t\t{ \"%s\", \"%s\", %s },\n",
    194 				ll->ll_name,
    195 				(ll->ll_string ? ll->ll_string : "NULL"),
    196 				(ll->ll_string ? ll->ll_string : "0"));
    197 		fprintf(fp, "\t}\n};\n");
    198 	} else {
    199 		fprintf(fp,
    200 		    "static const struct cfiattrdata %scf_iattrdata = {\n"
    201 		    "\t\"%s\", 0, {\n\t\t{ NULL, NULL, 0 },\n\t}\n};\n",
    202 		    name, name);
    203 	}
    204 
    205 	return 0;
    206 }
    207 
    208 static void
    209 emitcfdrivers(FILE *fp)
    210 {
    211 	struct devbase *d;
    212 	struct attrlist *al;
    213 	struct attr *a;
    214 	int has_iattrs;
    215 
    216 	NEWLINE;
    217 	ht_enumerate(attrtab, cf_locators_print, fp);
    218 
    219 	NEWLINE;
    220 	TAILQ_FOREACH(d, &allbases, d_next) {
    221 		if (!devbase_has_instances(d, WILD))
    222 			continue;
    223 		has_iattrs = 0;
    224 		for (al = d->d_attrs; al != NULL; al = al->al_next) {
    225 			a = al->al_this;
    226 			if (a->a_iattr == 0)
    227 				continue;
    228 			if (has_iattrs == 0)
    229 				fprintf(fp,
    230 			    	    "static const struct cfiattrdata * const %s_attrs[] = { ",
    231 			    	    d->d_name);
    232 			has_iattrs = 1;
    233 			fprintf(fp, "&%scf_iattrdata, ", a->a_name);
    234 		}
    235 		if (has_iattrs)
    236 			fprintf(fp, "NULL };\n");
    237 		fprintf(fp, "CFDRIVER_DECL(%s, %s, ", d->d_name, /* ) */
    238 		    d->d_classattr != NULL ? d->d_classattr->a_devclass
    239 					   : "DV_DULL");
    240 		if (has_iattrs)
    241 			fprintf(fp, "%s_attrs", d->d_name);
    242 		else
    243 			fprintf(fp, "NULL");
    244 		fprintf(fp, /* ( */ ");\n\n");
    245 	}
    246 
    247 	NEWLINE;
    248 
    249 	fprintf(fp,
    250 	    "%sstruct cfdriver * const cfdriver_%s_%s[] = {\n",
    251 	    ioconfname ? "static " : "",
    252 	    ioconfname ? "ioconf" : "list",
    253 	    ioconfname ? ioconfname : "initial");
    254 
    255 	TAILQ_FOREACH(d, &allbases, d_next) {
    256 		if (!devbase_has_instances(d, WILD))
    257 			continue;
    258 		fprintf(fp, "\t&%s_cd,\n", d->d_name);
    259 	}
    260 	fprintf(fp, "\tNULL\n};\n");
    261 }
    262 
    263 static void
    264 emitexterns(FILE *fp)
    265 {
    266 	struct deva *da;
    267 
    268 	NEWLINE;
    269 	TAILQ_FOREACH(da, &alldevas, d_next) {
    270 		if (!deva_has_instances(da, WILD))
    271 			continue;
    272 		fprintf(fp, "extern struct cfattach %s_ca;\n",
    273 			    da->d_name);
    274 	}
    275 }
    276 
    277 static void
    278 emitcfattachinit(FILE *fp)
    279 {
    280 	struct devbase *d;
    281 	struct deva *da;
    282 
    283 	NEWLINE;
    284 	TAILQ_FOREACH(d, &allbases, d_next) {
    285 		if (!devbase_has_instances(d, WILD))
    286 			continue;
    287 		if (d->d_ahead == NULL)
    288 			continue;
    289 
    290 		fprintf(fp,
    291 		    "static struct cfattach * const %s_cfattachinit[] = {\n\t",
    292 			    d->d_name);
    293 		for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
    294 			if (!deva_has_instances(da, WILD))
    295 				continue;
    296 			fprintf(fp, "&%s_ca, ", da->d_name);
    297 		}
    298 		fprintf(fp, "NULL\n};\n");
    299 	}
    300 
    301 	NEWLINE;
    302 	fprintf(fp, "%sconst struct cfattachinit cfattach%s%s[] = {\n",
    303 	    ioconfname ? "static " : "",
    304 	    ioconfname ? "_ioconf_" : "init",
    305 	    ioconfname ? ioconfname : "");
    306 
    307 	TAILQ_FOREACH(d, &allbases, d_next) {
    308 		if (!devbase_has_instances(d, WILD))
    309 			continue;
    310 		if (d->d_ahead == NULL)
    311 			continue;
    312 
    313 		fprintf(fp, "\t{ \"%s\", %s_cfattachinit },\n",
    314 			    d->d_name, d->d_name);
    315 	}
    316 
    317 	fprintf(fp, "\t{ NULL, NULL }\n};\n");
    318 }
    319 
    320 static void
    321 emitloc(FILE *fp)
    322 {
    323 	int i;
    324 
    325 	if (locators.used != 0) {
    326 		fprintf(fp, "\n/* locators */\n"
    327 			"static int loc[%d] = {", locators.used);
    328 		for (i = 0; i < locators.used; i++)
    329 			fprintf(fp, "%s%s,", SEP(i, 8), locators.vec[i]);
    330 		fprintf(fp, "\n};\n");
    331 	}
    332 }
    333 
    334 /*
    335  * Emit static parent data.
    336  */
    337 static void
    338 emitparents(FILE *fp)
    339 {
    340 	struct pspec *p;
    341 	int inst = -1;
    342 
    343 	NEWLINE;
    344 	TAILQ_FOREACH(p, &allpspecs, p_list) {
    345 		if (p->p_devs == NULL || p->p_active != DEVI_ACTIVE)
    346 			continue;
    347 		if (inst >= p->p_inst)
    348 			continue;
    349 		inst = p->p_inst;
    350 		fprintf(fp,
    351 		    "static const struct cfparent pspec%d = {\n", p->p_inst);
    352 		fprintf(fp, "\t\"%s\", ", p->p_iattr->a_name);
    353 		if (p->p_atdev != NULL) {
    354 			fprintf(fp, "\"%s\", ", p->p_atdev->d_name);
    355 			if (p->p_atunit == WILD)
    356 				fprintf(fp, "DVUNIT_ANY");
    357 			else
    358 				fprintf(fp, "%d", p->p_atunit);
    359 		} else
    360 			fprintf(fp, "NULL, 0");
    361 		fprintf(fp, "\n};\n");
    362 	}
    363 }
    364 
    365 /*
    366  * Emit the cfdata array.
    367  */
    368 static void
    369 emitcfdata(FILE *fp)
    370 {
    371 	struct devi **p, *i;
    372 	struct pspec *ps;
    373 	int unit, v;
    374 	const char *state, *basename, *attachment;
    375 	struct loclist *ll;
    376 	struct attr *a;
    377 	const char *loc;
    378 	char locbuf[20];
    379 	const char *lastname = "";
    380 
    381 	fprintf(fp, "\n"
    382 		"#define NORM FSTATE_NOTFOUND\n"
    383 		"#define STAR FSTATE_STAR\n"
    384 		"\n"
    385 		"%sstruct cfdata cfdata%s%s[] = {\n"
    386 		"    /* driver           attachment    unit state "
    387 		"     loc   flags  pspec */\n",
    388 		    ioconfname ? "static " : "",
    389 		    ioconfname ? "_ioconf_" : "",
    390 		    ioconfname ? ioconfname : "");
    391 	for (p = packed; (i = *p) != NULL; p++) {
    392 		/* the description */
    393 		fprintf(fp, "/*%3d: %s at ", i->i_cfindex, i->i_name);
    394 		if ((ps = i->i_pspec) != NULL) {
    395 			if (ps->p_atdev != NULL &&
    396 			    ps->p_atunit != WILD) {
    397 				fprintf(fp, "%s%d", ps->p_atdev->d_name,
    398 					    ps->p_atunit);
    399 			} else if (ps->p_atdev != NULL) {
    400 				fprintf(fp, "%s?", ps->p_atdev->d_name);
    401 			} else {
    402 				fprintf(fp, "%s?", ps->p_iattr->a_name);
    403 			}
    404 
    405 			a = ps->p_iattr;
    406 			for (ll = a->a_locs, v = 0; ll != NULL;
    407 			     ll = ll->ll_next, v++) {
    408 				if (ARRNAME(ll->ll_name, lastname)) {
    409 					fprintf(fp, " %s %s",
    410 					    ll->ll_name, i->i_locs[v]);
    411 				} else {
    412 					fprintf(fp, " %s %s",
    413 						    ll->ll_name,
    414 						    i->i_locs[v]);
    415 					lastname = ll->ll_name;
    416 				}
    417 			}
    418 		} else {
    419 			a = NULL;
    420 			fputs("root", fp);
    421 		}
    422 
    423 		fputs(" */\n", fp);
    424 
    425 		/* then the actual defining line */
    426 		basename = i->i_base->d_name;
    427 		attachment = i->i_atdeva->d_name;
    428 		if (i->i_unit == STAR) {
    429 			unit = i->i_base->d_umax;
    430 			state = "STAR";
    431 		} else {
    432 			unit = i->i_unit;
    433 			state = "NORM";
    434 		}
    435 		if (i->i_locoff >= 0) {
    436 			(void)snprintf(locbuf, sizeof(locbuf), "loc+%3d",
    437 			    i->i_locoff);
    438 			loc = locbuf;
    439 		} else
    440 			loc = "NULL";
    441 		fprintf(fp, "    { \"%s\",%s\"%s\",%s%2d, %s, %7s, %#6x, ",
    442 			    basename, strlen(basename) < 7 ? "\t\t"
    443 			    				   : "\t",
    444 			    attachment, strlen(attachment) < 5 ? "\t\t"
    445 			    				       : "\t",
    446 			    unit, state, loc, i->i_cfflags);
    447 		if (ps != NULL)
    448 			fprintf(fp, "&pspec%d },\n", ps->p_inst);
    449 		else
    450 			fputs("NULL },\n", fp);
    451 	}
    452 	fprintf(fp, "    { %s,%s%s,%s%2d, %s, %7s, %#6x, %s }\n};\n",
    453 	    "NULL", "\t\t", "NULL", "\t\t", 0, "   0", "NULL", 0, "NULL");
    454 }
    455 
    456 /*
    457  * Emit the table of potential roots.
    458  */
    459 static void
    460 emitroots(FILE *fp)
    461 {
    462 	struct devi **p, *i;
    463 
    464 	fputs("\nconst short cfroots[] = {\n", fp);
    465 	for (p = packed; (i = *p) != NULL; p++) {
    466 		if (i->i_at != NULL)
    467 			continue;
    468 		if (i->i_unit != 0 &&
    469 		    (i->i_unit != STAR || i->i_base->d_umax != 0))
    470 			warnx("warning: `%s at root' is not unit 0", i->i_name);
    471 		fprintf(fp, "\t%2d /* %s */,\n",
    472 		    i->i_cfindex, i->i_name);
    473 	}
    474 	fputs("\t-1\n};\n", fp);
    475 }
    476 
    477 /*
    478  * Emit pseudo-device initialization.
    479  */
    480 static void
    481 emitpseudo(FILE *fp)
    482 {
    483 	struct devi *i;
    484 	struct devbase *d;
    485 
    486 	fputs("\n/* pseudo-devices */\n", fp);
    487 	fputs("\nconst struct pdevinit pdevinit[] = {\n", fp);
    488 	TAILQ_FOREACH(i, &allpseudo, i_next) {
    489 		d = i->i_base;
    490 		fprintf(fp, "\t{ %sattach, %d },\n",
    491 		    d->d_name, d->d_umax);
    492 	}
    493 	fputs("\t{ 0, 0 }\n};\n", fp);
    494 }
    495 
    496 /*
    497  * Emit name to major block number table.
    498  */
    499 void
    500 emitname2blk(FILE *fp)
    501 {
    502 	struct devbase *dev;
    503 
    504 	fputs("\n/* device name to major block number */\n", fp);
    505 
    506 	fprintf(fp, "struct devnametobdevmaj dev_name2blk[] = {\n");
    507 
    508 	TAILQ_FOREACH(dev, &allbases, d_next) {
    509 		if (dev->d_major == NODEVMAJOR)
    510 			continue;
    511 
    512 		fprintf(fp, "\t{ \"%s\", %d },\n",
    513 			    dev->d_name, dev->d_major);
    514 	}
    515 	fprintf(fp, "\t{ NULL, 0 }\n};\n");
    516 }
    517