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mkioconf.c revision 1.16 
      1 /*	$NetBSD: mkioconf.c,v 1.16 2010/02/03 21:32:27 pooka 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/param.h>
     48 #include <err.h>
     49 #include <errno.h>
     50 #include <stdio.h>
     51 #include <stdlib.h>
     52 #include <string.h>
     53 #include "defs.h"
     54 
     55 /*
     56  * Make ioconf.c.
     57  */
     58 static int cf_locators_print(const char *, void *, void *);
     59 static int cforder(const void *, const void *);
     60 static void emitcfdata(FILE *);
     61 static void emitcfdrivers(FILE *);
     62 static void emitexterns(FILE *);
     63 static void emitcfattachinit(FILE *);
     64 static void emithdr(FILE *);
     65 static void emitloc(FILE *);
     66 static void emitpseudo(FILE *);
     67 static void emitparents(FILE *);
     68 static void emitroots(FILE *);
     69 static void emitname2blk(FILE *);
     70 
     71 #define	SEP(pos, max)	(((u_int)(pos) % (max)) == 0 ? "\n\t" : " ")
     72 
     73 #define ARRNAME(n, l) (strchr((n), ARRCHR) && strncmp((n), (l), strlen((l))) == 0)
     74 
     75 /*
     76  * NEWLINE can only be used in the emitXXX functions.
     77  * In most cases it can be subsumed into an fprintf.
     78  */
     79 #define	NEWLINE		putc('\n', fp)
     80 
     81 int
     82 mkioconf(void)
     83 {
     84 	FILE *fp;
     85 
     86 	qsort(packed, npacked, sizeof *packed, cforder);
     87 	if ((fp = fopen("ioconf.c.tmp", "w")) == NULL) {
     88 		warn("cannot write ioconf.c");
     89 		return (1);
     90 	}
     91 
     92 	emithdr(fp);
     93 	emitcfdrivers(fp);
     94 	emitexterns(fp);
     95 	emitloc(fp);
     96 	emitparents(fp);
     97 	emitcfdata(fp);
     98 
     99 	if (ioconfname == NULL) {
    100 		emitcfattachinit(fp);
    101 		emitroots(fp);
    102 		emitpseudo(fp);
    103 		if (!do_devsw)
    104 			emitname2blk(fp);
    105 	}
    106 
    107 	fflush(fp);
    108 	if (ferror(fp)) {
    109 		warn("error writing ioconf.c");
    110 		(void)fclose(fp);
    111 #if 0
    112 		(void)unlink("ioconf.c.tmp");
    113 #endif
    114 		return (1);
    115 	}
    116 
    117 	(void)fclose(fp);
    118 	if (moveifchanged("ioconf.c.tmp", "ioconf.c") != 0) {
    119 		warn("error renaming ioconf.c");
    120 		return (1);
    121 	}
    122 	return (0);
    123 }
    124 
    125 static int
    126 cforder(const void *a, const void *b)
    127 {
    128 	int n1, n2;
    129 
    130 	n1 = (*(const struct devi * const *)a)->i_cfindex;
    131 	n2 = (*(const struct devi * const *)b)->i_cfindex;
    132 	return (n1 - n2);
    133 }
    134 
    135 static void
    136 emithdr(FILE *ofp)
    137 {
    138 	FILE *ifp;
    139 	int n;
    140 	char ifnbuf[200], buf[BUFSIZ];
    141 	char *ifn;
    142 
    143 	autogen_comment(ofp, "ioconf.c");
    144 
    145 	(void)snprintf(ifnbuf, sizeof(ifnbuf), "arch/%s/conf/ioconf.incl.%s",
    146 	    machine, machine);
    147 	ifn = sourcepath(ifnbuf);
    148 	if ((ifp = fopen(ifn, "r")) != NULL) {
    149 		while ((n = fread(buf, 1, sizeof(buf), ifp)) > 0)
    150 			(void)fwrite(buf, 1, n, ofp);
    151 		if (ferror(ifp))
    152 			err(EXIT_FAILURE, "error reading %s", ifn);
    153 		(void)fclose(ifp);
    154 	} else {
    155 		fputs("#include <sys/param.h>\n"
    156 			"#include <sys/conf.h>\n"
    157 			"#include <sys/device.h>\n"
    158 			"#include <sys/mount.h>\n", ofp);
    159 	}
    160 	free(ifn);
    161 }
    162 
    163 /*
    164  * Emit an initialized array of character strings describing this
    165  * attribute's locators.
    166  */
    167 static int
    168 cf_locators_print(const char *name, void *value, void *arg)
    169 {
    170 	struct attr *a;
    171 	struct nvlist *nv;
    172 	FILE *fp = arg;
    173 
    174 	a = value;
    175 	if (!a->a_iattr)
    176 		return (0);
    177 
    178 	if (a->a_locs) {
    179 		fprintf(fp,
    180 		    "static const struct cfiattrdata %scf_iattrdata = {\n",
    181 			    name);
    182 		fprintf(fp, "\t\"%s\", %d,\n\t{\n", name, a->a_loclen);
    183 		for (nv = a->a_locs; nv; nv = nv->nv_next)
    184 			fprintf(fp, "\t\t{ \"%s\", \"%s\", %s },\n",
    185 				nv->nv_name,
    186 				(nv->nv_str ? nv->nv_str : "NULL"),
    187 				(nv->nv_str ? nv->nv_str : "0"));
    188 		fprintf(fp, "\t}\n};\n");
    189 	} else {
    190 		fprintf(fp,
    191 		    "static const struct cfiattrdata %scf_iattrdata = {\n"
    192 		    "\t\"%s\", 0, {\n\t\t{ NULL, NULL, 0 },\n\t}\n};\n",
    193 		    name, name);
    194 	}
    195 
    196 	return 0;
    197 }
    198 
    199 static void
    200 emitcfdrivers(FILE *fp)
    201 {
    202 	struct devbase *d;
    203 	struct nvlist *nv;
    204 	struct attr *a;
    205 	int has_iattrs;
    206 
    207 	NEWLINE;
    208 	ht_enumerate(attrtab, cf_locators_print, fp);
    209 
    210 	NEWLINE;
    211 	TAILQ_FOREACH(d, &allbases, d_next) {
    212 		if (!devbase_has_instances(d, WILD))
    213 			continue;
    214 		has_iattrs = 0;
    215 		for (nv = d->d_attrs; nv != NULL; nv = nv->nv_next) {
    216 			a = nv->nv_ptr;
    217 			if (a->a_iattr == 0)
    218 				continue;
    219 			if (has_iattrs == 0)
    220 				fprintf(fp,
    221 			    	    "static const struct cfiattrdata * const %s_attrs[] = { ",
    222 			    	    d->d_name);
    223 			has_iattrs = 1;
    224 			fprintf(fp, "&%scf_iattrdata, ", a->a_name);
    225 		}
    226 		if (has_iattrs)
    227 			fprintf(fp, "NULL };\n");
    228 		fprintf(fp, "CFDRIVER_DECL(%s, %s, ", d->d_name, /* ) */
    229 		    d->d_classattr != NULL ? d->d_classattr->a_devclass
    230 					   : "DV_DULL");
    231 		if (has_iattrs)
    232 			fprintf(fp, "%s_attrs", d->d_name);
    233 		else
    234 			fprintf(fp, "NULL");
    235 		fprintf(fp, /* ( */ ");\n\n");
    236 	}
    237 
    238 	NEWLINE;
    239 
    240 	/* the initial list is not added to ioconf-only configs */
    241 	if (ioconfname)
    242 		return;
    243 
    244 	fprintf(fp, "struct cfdriver * const cfdriver_list_initial[] = {\n");
    245 	TAILQ_FOREACH(d, &allbases, d_next) {
    246 		if (!devbase_has_instances(d, WILD))
    247 			continue;
    248 		fprintf(fp, "\t&%s_cd,\n", d->d_name);
    249 	}
    250 	fprintf(fp, "\tNULL\n};\n");
    251 }
    252 
    253 static void
    254 emitexterns(FILE *fp)
    255 {
    256 	struct deva *da;
    257 
    258 	NEWLINE;
    259 	TAILQ_FOREACH(da, &alldevas, d_next) {
    260 		if (!deva_has_instances(da, WILD))
    261 			continue;
    262 		fprintf(fp, "extern struct cfattach %s_ca;\n",
    263 			    da->d_name);
    264 	}
    265 }
    266 
    267 static void
    268 emitcfattachinit(FILE *fp)
    269 {
    270 	struct devbase *d;
    271 	struct deva *da;
    272 
    273 	NEWLINE;
    274 	TAILQ_FOREACH(d, &allbases, d_next) {
    275 		if (!devbase_has_instances(d, WILD))
    276 			continue;
    277 		if (d->d_ahead == NULL)
    278 			continue;
    279 
    280 		fprintf(fp,
    281 		    "static struct cfattach * const %s_cfattachinit[] = {\n\t",
    282 			    d->d_name);
    283 		for (da = d->d_ahead; da != NULL; da = da->d_bsame) {
    284 			if (!deva_has_instances(da, WILD))
    285 				continue;
    286 			fprintf(fp, "&%s_ca, ", da->d_name);
    287 		}
    288 		fprintf(fp, "NULL\n};\n");
    289 	}
    290 
    291 	NEWLINE;
    292 	fprintf(fp, "const struct cfattachinit cfattachinit[] = {\n");
    293 
    294 	TAILQ_FOREACH(d, &allbases, d_next) {
    295 		if (!devbase_has_instances(d, WILD))
    296 			continue;
    297 		if (d->d_ahead == NULL)
    298 			continue;
    299 
    300 		fprintf(fp, "\t{ \"%s\", %s_cfattachinit },\n",
    301 			    d->d_name, d->d_name);
    302 	}
    303 
    304 	fprintf(fp, "\t{ NULL, NULL }\n};\n");
    305 }
    306 
    307 static void
    308 emitloc(FILE *fp)
    309 {
    310 	int i;
    311 
    312 	if (locators.used != 0) {
    313 		fprintf(fp, "\n/* locators */\n"
    314 			"static int loc[%d] = {", locators.used);
    315 		for (i = 0; i < locators.used; i++)
    316 			fprintf(fp, "%s%s,", SEP(i, 8), locators.vec[i]);
    317 		fprintf(fp, "\n};\n");
    318 	} else if (*packed != NULL) {
    319 		/* We need to have *something*. */
    320 		fprintf(fp, "\n/* locators */\n"
    321 			"static int loc[1] = { -1 };\n");
    322 	}
    323 }
    324 
    325 /*
    326  * Emit static parent data.
    327  */
    328 static void
    329 emitparents(FILE *fp)
    330 {
    331 	struct pspec *p;
    332 
    333 	NEWLINE;
    334 	TAILQ_FOREACH(p, &allpspecs, p_list) {
    335 		if (p->p_devs == NULL || p->p_active != DEVI_ACTIVE)
    336 			continue;
    337 		fprintf(fp,
    338 		    "static const struct cfparent pspec%d = {\n", p->p_inst);
    339 		fprintf(fp, "\t\"%s\", ", p->p_iattr->a_name);
    340 		if (p->p_atdev != NULL) {
    341 			fprintf(fp, "\"%s\", ", p->p_atdev->d_name);
    342 			if (p->p_atunit == WILD)
    343 				fprintf(fp, "DVUNIT_ANY");
    344 			else
    345 				fprintf(fp, "%d", p->p_atunit);
    346 		} else
    347 			fprintf(fp, "NULL, 0");
    348 		fprintf(fp, "\n};\n");
    349 	}
    350 }
    351 
    352 /*
    353  * Emit the cfdata array.
    354  */
    355 static void
    356 emitcfdata(FILE *fp)
    357 {
    358 	struct devi **p, *i;
    359 	struct pspec *ps;
    360 	int unit, v;
    361 	const char *state, *basename, *attachment;
    362 	struct nvlist *nv;
    363 	struct attr *a;
    364 	const char *loc;
    365 	char locbuf[20];
    366 	const char *lastname = "";
    367 
    368 	fprintf(fp, "\n"
    369 		"#define NORM FSTATE_NOTFOUND\n"
    370 		"#define STAR FSTATE_STAR\n"
    371 		"\n"
    372 		"struct cfdata cfdata%s%s[] = {\n"
    373 		"    /* driver           attachment    unit state "
    374 		"loc   flags pspec */\n",
    375 		    ioconfname ? "_" : "",
    376 		    ioconfname ? ioconfname : "");
    377 	for (p = packed; (i = *p) != NULL; p++) {
    378 		/* the description */
    379 		fprintf(fp, "/*%3d: %s at ", i->i_cfindex, i->i_name);
    380 		if ((ps = i->i_pspec) != NULL) {
    381 			if (ps->p_atdev != NULL &&
    382 			    ps->p_atunit != WILD) {
    383 				fprintf(fp, "%s%d", ps->p_atdev->d_name,
    384 					    ps->p_atunit);
    385 			} else if (ps->p_atdev != NULL) {
    386 				fprintf(fp, "%s?", ps->p_atdev->d_name);
    387 			} else {
    388 				fprintf(fp, "%s?", ps->p_iattr->a_name);
    389 			}
    390 
    391 			a = ps->p_iattr;
    392 			for (nv = a->a_locs, v = 0; nv != NULL;
    393 			     nv = nv->nv_next, v++) {
    394 				if (ARRNAME(nv->nv_name, lastname)) {
    395 					fprintf(fp, " %s %s",
    396 					    nv->nv_name, i->i_locs[v]);
    397 				} else {
    398 					fprintf(fp, " %s %s",
    399 						    nv->nv_name,
    400 						    i->i_locs[v]);
    401 					lastname = nv->nv_name;
    402 				}
    403 			}
    404 		} else {
    405 			a = NULL;
    406 			fputs("root", fp);
    407 		}
    408 
    409 		fputs(" */\n", fp);
    410 
    411 		/* then the actual defining line */
    412 		basename = i->i_base->d_name;
    413 		attachment = i->i_atdeva->d_name;
    414 		if (i->i_unit == STAR) {
    415 			unit = i->i_base->d_umax;
    416 			state = "STAR";
    417 		} else {
    418 			unit = i->i_unit;
    419 			state = "NORM";
    420 		}
    421 		if (i->i_locoff >= 0) {
    422 			(void)snprintf(locbuf, sizeof(locbuf), "loc+%3d",
    423 			    i->i_locoff);
    424 			loc = locbuf;
    425 		} else
    426 			loc = "loc";
    427 		fprintf(fp, "    { \"%s\",%s\"%s\",%s%2d, %s, %7s, %#6x, ",
    428 			    basename, strlen(basename) < 8 ? "\t\t"
    429 			    				   : "\t",
    430 			    attachment, strlen(attachment) < 5 ? "\t\t"
    431 			    				       : "\t",
    432 			    unit, state, loc, i->i_cfflags);
    433 		if (ps != NULL)
    434 			fprintf(fp, "&pspec%d },\n", ps->p_inst);
    435 		else
    436 			fputs("NULL },\n", fp);
    437 	}
    438 	fprintf(fp, "    { %s,%s%s,%s%2d, %s, %7s, %#6x, %s }\n};\n",
    439 	    "NULL", "\t\t", "NULL", "\t\t", 0, "0", "NULL", 0, "NULL");
    440 }
    441 
    442 /*
    443  * Emit the table of potential roots.
    444  */
    445 static void
    446 emitroots(FILE *fp)
    447 {
    448 	struct devi **p, *i;
    449 
    450 	fputs("\nconst short cfroots[] = {\n", fp);
    451 	for (p = packed; (i = *p) != NULL; p++) {
    452 		if (i->i_at != NULL)
    453 			continue;
    454 		if (i->i_unit != 0 &&
    455 		    (i->i_unit != STAR || i->i_base->d_umax != 0))
    456 			warnx("warning: `%s at root' is not unit 0", i->i_name);
    457 		fprintf(fp, "\t%2d /* %s */,\n",
    458 		    i->i_cfindex, i->i_name);
    459 	}
    460 	fputs("\t-1\n};\n", fp);
    461 }
    462 
    463 /*
    464  * Emit pseudo-device initialization.
    465  */
    466 static void
    467 emitpseudo(FILE *fp)
    468 {
    469 	struct devi *i;
    470 	struct devbase *d;
    471 
    472 	fputs("\n/* pseudo-devices */\n", fp);
    473 	TAILQ_FOREACH(i, &allpseudo, i_next) {
    474 		fprintf(fp, "void %sattach(int);\n",
    475 		    i->i_base->d_name);
    476 	}
    477 	fputs("\nstruct pdevinit pdevinit[] = {\n", fp);
    478 	TAILQ_FOREACH(i, &allpseudo, i_next) {
    479 		d = i->i_base;
    480 		fprintf(fp, "\t{ %sattach, %d },\n",
    481 		    d->d_name, d->d_umax);
    482 	}
    483 	fputs("\t{ 0, 0 }\n};\n", fp);
    484 }
    485 
    486 /*
    487  * Emit name to major block number table.
    488  */
    489 void
    490 emitname2blk(FILE *fp)
    491 {
    492 	struct devbase *dev;
    493 
    494 	fputs("\n/* device name to major block number */\n", fp);
    495 
    496 	fprintf(fp, "struct devnametobdevmaj dev_name2blk[] = {\n");
    497 
    498 	TAILQ_FOREACH(dev, &allbases, d_next) {
    499 		if (dev->d_major == NODEVMAJOR)
    500 			continue;
    501 
    502 		fprintf(fp, "\t{ \"%s\", %d },\n",
    503 			    dev->d_name, dev->d_major);
    504 	}
    505 	fprintf(fp, "\t{ NULL, 0 }\n};\n");
    506 }
    507