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mkioconf.c revision 1.23 
      1 /*	$NetBSD: mkioconf.c,v 1.23 2014/10/31 17:43:55 uebayasi 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 1.23 2014/10/31 17:43:55 uebayasi 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 	emithdr(fp);
     96 	emitcfdrivers(fp);
     97 	emitexterns(fp);
     98 	emitloc(fp);
     99 	emitparents(fp);
    100 	emitcfdata(fp);
    101 	emitcfattachinit(fp);
    102 
    103 	if (ioconfname == NULL) {
    104 		emitroots(fp);
    105 		emitpseudo(fp);
    106 		if (!do_devsw)
    107 			emitname2blk(fp);
    108 	}
    109 
    110 	fflush(fp);
    111 	if (ferror(fp)) {
    112 		warn("error writing ioconf.c");
    113 		(void)fclose(fp);
    114 #if 0
    115 		(void)unlink("ioconf.c.tmp");
    116 #endif
    117 		return (1);
    118 	}
    119 
    120 	(void)fclose(fp);
    121 	if (moveifchanged("ioconf.c.tmp", "ioconf.c") != 0) {
    122 		warn("error renaming ioconf.c");
    123 		return (1);
    124 	}
    125 	return (0);
    126 }
    127 
    128 static int
    129 cforder(const void *a, const void *b)
    130 {
    131 	int n1, n2;
    132 
    133 	n1 = (*(const struct devi * const *)a)->i_cfindex;
    134 	n2 = (*(const struct devi * const *)b)->i_cfindex;
    135 	return (n1 - n2);
    136 }
    137 
    138 static void
    139 emithdr(FILE *ofp)
    140 {
    141 	FILE *ifp;
    142 	size_t n;
    143 	char ifnbuf[200], buf[BUFSIZ];
    144 	char *ifn;
    145 
    146 	autogen_comment(ofp, "ioconf.c");
    147 
    148 	(void)snprintf(ifnbuf, sizeof(ifnbuf), "arch/%s/conf/ioconf.incl.%s",
    149 	    machine ? machine : "(null)", machine ? machine : "(null)");
    150 	ifn = sourcepath(ifnbuf);
    151 	if ((ifp = fopen(ifn, "r")) != NULL) {
    152 		while ((n = fread(buf, 1, sizeof(buf), ifp)) > 0)
    153 			(void)fwrite(buf, 1, n, ofp);
    154 		if (ferror(ifp))
    155 			err(EXIT_FAILURE, "error reading %s", ifn);
    156 		(void)fclose(ifp);
    157 	} else {
    158 		fputs("#include <sys/param.h>\n"
    159 			"#include <sys/conf.h>\n"
    160 			"#include <sys/device.h>\n"
    161 			"#include <sys/mount.h>\n", ofp);
    162 	}
    163 	free(ifn);
    164 }
    165 
    166 /*
    167  * Emit an initialized array of character strings describing this
    168  * attribute's locators.
    169  */
    170 static int
    171 cf_locators_print(const char *name, void *value, void *arg)
    172 {
    173 	struct attr *a;
    174 	struct loclist *ll;
    175 	FILE *fp = arg;
    176 
    177 	a = value;
    178 	if (!a->a_iattr)
    179 		return (0);
    180 	if (ht_lookup(selecttab, name) == NULL)
    181 		return (0);
    182 
    183 	if (a->a_locs) {
    184 		fprintf(fp,
    185 		    "static const struct cfiattrdata %scf_iattrdata = {\n",
    186 			    name);
    187 		fprintf(fp, "\t\"%s\", %d,\n\t{\n", name, a->a_loclen);
    188 		for (ll = a->a_locs; ll; ll = ll->ll_next)
    189 			fprintf(fp, "\t\t{ \"%s\", \"%s\", %s },\n",
    190 				ll->ll_name,
    191 				(ll->ll_string ? ll->ll_string : "NULL"),
    192 				(ll->ll_string ? ll->ll_string : "0"));
    193 		fprintf(fp, "\t}\n};\n");
    194 	} else {
    195 		fprintf(fp,
    196 		    "static const struct cfiattrdata %scf_iattrdata = {\n"
    197 		    "\t\"%s\", 0, {\n\t\t{ NULL, NULL, 0 },\n\t}\n};\n",
    198 		    name, name);
    199 	}
    200 
    201 	return 0;
    202 }
    203 
    204 static void
    205 emitcfdrivers(FILE *fp)
    206 {
    207 	struct devbase *d;
    208 	struct attrlist *al;
    209 	struct attr *a;
    210 	int has_iattrs;
    211 
    212 	NEWLINE;
    213 	ht_enumerate(attrtab, cf_locators_print, fp);
    214 
    215 	NEWLINE;
    216 	TAILQ_FOREACH(d, &allbases, d_next) {
    217 		if (!devbase_has_instances(d, WILD))
    218 			continue;
    219 		has_iattrs = 0;
    220 		for (al = d->d_attrs; al != NULL; al = al->al_next) {
    221 			a = al->al_this;
    222 			if (a->a_iattr == 0)
    223 				continue;
    224 			if (has_iattrs == 0)
    225 				fprintf(fp,
    226 			    	    "static const struct cfiattrdata * const %s_attrs[] = { ",
    227 			    	    d->d_name);
    228 			has_iattrs = 1;
    229 			fprintf(fp, "&%scf_iattrdata, ", a->a_name);
    230 		}
    231 		if (has_iattrs)
    232 			fprintf(fp, "NULL };\n");
    233 		fprintf(fp, "CFDRIVER_DECL(%s, %s, ", d->d_name, /* ) */
    234 		    d->d_classattr != NULL ? d->d_classattr->a_devclass
    235 					   : "DV_DULL");
    236 		if (has_iattrs)
    237 			fprintf(fp, "%s_attrs", d->d_name);
    238 		else
    239 			fprintf(fp, "NULL");
    240 		fprintf(fp, /* ( */ ");\n\n");
    241 	}
    242 
    243 	NEWLINE;
    244 
    245 	fprintf(fp,
    246 	    "%sstruct cfdriver * const cfdriver_%s_%s[] = {\n",
    247 	    ioconfname ? "static " : "",
    248 	    ioconfname ? "ioconf" : "list",
    249 	    ioconfname ? ioconfname : "initial");
    250 
    251 	TAILQ_FOREACH(d, &allbases, d_next) {
    252 		if (!devbase_has_instances(d, WILD))
    253 			continue;
    254 		fprintf(fp, "\t&%s_cd,\n", d->d_name);
    255 	}
    256 	fprintf(fp, "\tNULL\n};\n");
    257 }
    258 
    259 static void
    260 emitexterns(FILE *fp)
    261 {
    262 	struct deva *da;
    263 
    264 	NEWLINE;
    265 	TAILQ_FOREACH(da, &alldevas, d_next) {
    266 		if (!deva_has_instances(da, WILD))
    267 			continue;
    268 		fprintf(fp, "extern struct cfattach %s_ca;\n",
    269 			    da->d_name);
    270 	}
    271 }
    272 
    273 static void
    274 emitcfattachinit(FILE *fp)
    275 {
    276 	struct devbase *d;
    277 	struct deva *da;
    278 
    279 	NEWLINE;
    280 	TAILQ_FOREACH(d, &allbases, d_next) {
    281 		if (!devbase_has_instances(d, WILD))
    282 			continue;
    283 		if (d->d_ahead == NULL)
    284 			continue;
    285 
    286 		fprintf(fp,
    287 		    "static struct cfattach * const %s_cfattachinit[] = {\n\t",
    288 			    d->d_name);
    289 		for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
    290 			if (!deva_has_instances(da, WILD))
    291 				continue;
    292 			fprintf(fp, "&%s_ca, ", da->d_name);
    293 		}
    294 		fprintf(fp, "NULL\n};\n");
    295 	}
    296 
    297 	NEWLINE;
    298 	fprintf(fp, "%sconst struct cfattachinit cfattach%s%s[] = {\n",
    299 	    ioconfname ? "static " : "",
    300 	    ioconfname ? "_ioconf_" : "init",
    301 	    ioconfname ? ioconfname : "");
    302 
    303 	TAILQ_FOREACH(d, &allbases, d_next) {
    304 		if (!devbase_has_instances(d, WILD))
    305 			continue;
    306 		if (d->d_ahead == NULL)
    307 			continue;
    308 
    309 		fprintf(fp, "\t{ \"%s\", %s_cfattachinit },\n",
    310 			    d->d_name, d->d_name);
    311 	}
    312 
    313 	fprintf(fp, "\t{ NULL, NULL }\n};\n");
    314 }
    315 
    316 static void
    317 emitloc(FILE *fp)
    318 {
    319 	int i;
    320 
    321 	if (locators.used != 0) {
    322 		fprintf(fp, "\n/* locators */\n"
    323 			"static int loc[%d] = {", locators.used);
    324 		for (i = 0; i < locators.used; i++)
    325 			fprintf(fp, "%s%s,", SEP(i, 8), locators.vec[i]);
    326 		fprintf(fp, "\n};\n");
    327 	} else if (*packed != NULL) {
    328 		/* We need to have *something*. */
    329 		fprintf(fp, "\n/* locators */\n"
    330 			"static int loc[1] = { -1 };\n");
    331 	}
    332 }
    333 
    334 /*
    335  * Emit static parent data.
    336  */
    337 static void
    338 emitparents(FILE *fp)
    339 {
    340 	struct pspec *p;
    341 
    342 	NEWLINE;
    343 	TAILQ_FOREACH(p, &allpspecs, p_list) {
    344 		if (p->p_devs == NULL || p->p_active != DEVI_ACTIVE)
    345 			continue;
    346 		fprintf(fp,
    347 		    "static const struct cfparent pspec%d = {\n", p->p_inst);
    348 		fprintf(fp, "\t\"%s\", ", p->p_iattr->a_name);
    349 		if (p->p_atdev != NULL) {
    350 			fprintf(fp, "\"%s\", ", p->p_atdev->d_name);
    351 			if (p->p_atunit == WILD)
    352 				fprintf(fp, "DVUNIT_ANY");
    353 			else
    354 				fprintf(fp, "%d", p->p_atunit);
    355 		} else
    356 			fprintf(fp, "NULL, 0");
    357 		fprintf(fp, "\n};\n");
    358 	}
    359 }
    360 
    361 /*
    362  * Emit the cfdata array.
    363  */
    364 static void
    365 emitcfdata(FILE *fp)
    366 {
    367 	struct devi **p, *i;
    368 	struct pspec *ps;
    369 	int unit, v;
    370 	const char *state, *basename, *attachment;
    371 	struct loclist *ll;
    372 	struct attr *a;
    373 	const char *loc;
    374 	char locbuf[20];
    375 	const char *lastname = "";
    376 
    377 	fprintf(fp, "\n"
    378 		"#define NORM FSTATE_NOTFOUND\n"
    379 		"#define STAR FSTATE_STAR\n"
    380 		"\n"
    381 		"%sstruct cfdata cfdata%s%s[] = {\n"
    382 		"    /* driver           attachment    unit state "
    383 		"loc   flags pspec */\n",
    384 		    ioconfname ? "static " : "",
    385 		    ioconfname ? "_ioconf_" : "",
    386 		    ioconfname ? ioconfname : "");
    387 	for (p = packed; (i = *p) != NULL; p++) {
    388 		/* the description */
    389 		fprintf(fp, "/*%3d: %s at ", i->i_cfindex, i->i_name);
    390 		if ((ps = i->i_pspec) != NULL) {
    391 			if (ps->p_atdev != NULL &&
    392 			    ps->p_atunit != WILD) {
    393 				fprintf(fp, "%s%d", ps->p_atdev->d_name,
    394 					    ps->p_atunit);
    395 			} else if (ps->p_atdev != NULL) {
    396 				fprintf(fp, "%s?", ps->p_atdev->d_name);
    397 			} else {
    398 				fprintf(fp, "%s?", ps->p_iattr->a_name);
    399 			}
    400 
    401 			a = ps->p_iattr;
    402 			for (ll = a->a_locs, v = 0; ll != NULL;
    403 			     ll = ll->ll_next, v++) {
    404 				if (ARRNAME(ll->ll_name, lastname)) {
    405 					fprintf(fp, " %s %s",
    406 					    ll->ll_name, i->i_locs[v]);
    407 				} else {
    408 					fprintf(fp, " %s %s",
    409 						    ll->ll_name,
    410 						    i->i_locs[v]);
    411 					lastname = ll->ll_name;
    412 				}
    413 			}
    414 		} else {
    415 			a = NULL;
    416 			fputs("root", fp);
    417 		}
    418 
    419 		fputs(" */\n", fp);
    420 
    421 		/* then the actual defining line */
    422 		basename = i->i_base->d_name;
    423 		attachment = i->i_atdeva->d_name;
    424 		if (i->i_unit == STAR) {
    425 			unit = i->i_base->d_umax;
    426 			state = "STAR";
    427 		} else {
    428 			unit = i->i_unit;
    429 			state = "NORM";
    430 		}
    431 		if (i->i_locoff >= 0) {
    432 			(void)snprintf(locbuf, sizeof(locbuf), "loc+%3d",
    433 			    i->i_locoff);
    434 			loc = locbuf;
    435 		} else
    436 			loc = "loc";
    437 		fprintf(fp, "    { \"%s\",%s\"%s\",%s%2d, %s, %7s, %#6x, ",
    438 			    basename, strlen(basename) < 8 ? "\t\t"
    439 			    				   : "\t",
    440 			    attachment, strlen(attachment) < 5 ? "\t\t"
    441 			    				       : "\t",
    442 			    unit, state, loc, i->i_cfflags);
    443 		if (ps != NULL)
    444 			fprintf(fp, "&pspec%d },\n", ps->p_inst);
    445 		else
    446 			fputs("NULL },\n", fp);
    447 	}
    448 	fprintf(fp, "    { %s,%s%s,%s%2d, %s, %7s, %#6x, %s }\n};\n",
    449 	    "NULL", "\t\t", "NULL", "\t\t", 0, "0", "NULL", 0, "NULL");
    450 }
    451 
    452 /*
    453  * Emit the table of potential roots.
    454  */
    455 static void
    456 emitroots(FILE *fp)
    457 {
    458 	struct devi **p, *i;
    459 
    460 	fputs("\nconst short cfroots[] = {\n", fp);
    461 	for (p = packed; (i = *p) != NULL; p++) {
    462 		if (i->i_at != NULL)
    463 			continue;
    464 		if (i->i_unit != 0 &&
    465 		    (i->i_unit != STAR || i->i_base->d_umax != 0))
    466 			warnx("warning: `%s at root' is not unit 0", i->i_name);
    467 		fprintf(fp, "\t%2d /* %s */,\n",
    468 		    i->i_cfindex, i->i_name);
    469 	}
    470 	fputs("\t-1\n};\n", fp);
    471 }
    472 
    473 /*
    474  * Emit pseudo-device initialization.
    475  */
    476 static void
    477 emitpseudo(FILE *fp)
    478 {
    479 	struct devi *i;
    480 	struct devbase *d;
    481 
    482 	fputs("\n/* pseudo-devices */\n", fp);
    483 	TAILQ_FOREACH(i, &allpseudo, i_next) {
    484 		fprintf(fp, "void %sattach(int);\n",
    485 		    i->i_base->d_name);
    486 	}
    487 	fputs("\nstruct 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