1*c5a6c986Suebayasi /* $NetBSD: sem.c,v 1.59 2014/10/11 09:27:51 uebayasi Exp $ */ 25ecc953bSthorpej 35ecc953bSthorpej /* 45ecc953bSthorpej * Copyright (c) 1992, 1993 55ecc953bSthorpej * The Regents of the University of California. All rights reserved. 65ecc953bSthorpej * 75ecc953bSthorpej * This software was developed by the Computer Systems Engineering group 85ecc953bSthorpej * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 95ecc953bSthorpej * contributed to Berkeley. 105ecc953bSthorpej * 115ecc953bSthorpej * All advertising materials mentioning features or use of this software 125ecc953bSthorpej * must display the following acknowledgement: 135ecc953bSthorpej * This product includes software developed by the University of 145ecc953bSthorpej * California, Lawrence Berkeley Laboratories. 155ecc953bSthorpej * 165ecc953bSthorpej * Redistribution and use in source and binary forms, with or without 175ecc953bSthorpej * modification, are permitted provided that the following conditions 185ecc953bSthorpej * are met: 195ecc953bSthorpej * 1. Redistributions of source code must retain the above copyright 205ecc953bSthorpej * notice, this list of conditions and the following disclaimer. 215ecc953bSthorpej * 2. Redistributions in binary form must reproduce the above copyright 225ecc953bSthorpej * notice, this list of conditions and the following disclaimer in the 235ecc953bSthorpej * documentation and/or other materials provided with the distribution. 245ecc953bSthorpej * 3. Neither the name of the University nor the names of its contributors 255ecc953bSthorpej * may be used to endorse or promote products derived from this software 265ecc953bSthorpej * without specific prior written permission. 275ecc953bSthorpej * 285ecc953bSthorpej * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 295ecc953bSthorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 305ecc953bSthorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 315ecc953bSthorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 325ecc953bSthorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 335ecc953bSthorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 345ecc953bSthorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 355ecc953bSthorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 365ecc953bSthorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 375ecc953bSthorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 385ecc953bSthorpej * SUCH DAMAGE. 395ecc953bSthorpej * 405ecc953bSthorpej * from: @(#)sem.c 8.1 (Berkeley) 6/6/93 415ecc953bSthorpej */ 425ecc953bSthorpej 435ecc953bSthorpej #if HAVE_NBTOOL_CONFIG_H 445ecc953bSthorpej #include "nbtool_config.h" 455ecc953bSthorpej #endif 465ecc953bSthorpej 475ecc953bSthorpej #include <sys/param.h> 485ecc953bSthorpej #include <ctype.h> 495ecc953bSthorpej #include <stdio.h> 505ecc953bSthorpej #include <stdlib.h> 515ecc953bSthorpej #include <string.h> 52d0fb8901Schristos #include <util.h> 535ecc953bSthorpej #include "defs.h" 545ecc953bSthorpej #include "sem.h" 555ecc953bSthorpej 565ecc953bSthorpej /* 575ecc953bSthorpej * config semantics. 585ecc953bSthorpej */ 595ecc953bSthorpej 605ecc953bSthorpej #define NAMESIZE 100 /* local name buffers */ 615ecc953bSthorpej 625ecc953bSthorpej const char *s_ifnet; /* magic attribute */ 635ecc953bSthorpej const char *s_qmark; 645ecc953bSthorpej const char *s_none; 655ecc953bSthorpej 665ecc953bSthorpej static struct hashtab *cfhashtab; /* for config lookup */ 675ecc953bSthorpej struct hashtab *devitab; /* etc */ 687c7d91e6Suebayasi struct attr allattr; 695ecc953bSthorpej 705ecc953bSthorpej static struct attr errattr; 715ecc953bSthorpej static struct devbase errdev; 725ecc953bSthorpej static struct deva errdeva; 735ecc953bSthorpej 744caf067bSdholland static int has_errobj(struct attrlist *, struct attr *); 755ecc953bSthorpej static struct nvlist *addtoattr(struct nvlist *, struct devbase *); 765ecc953bSthorpej static int resolve(struct nvlist **, const char *, const char *, 775ecc953bSthorpej struct nvlist *, int); 785ecc953bSthorpej static struct pspec *getpspec(struct attr *, struct devbase *, int); 795ecc953bSthorpej static struct devi *newdevi(const char *, int, struct devbase *d); 805ecc953bSthorpej static struct devi *getdevi(const char *); 81c130d400Scube static void remove_devi(struct devi *); 825ecc953bSthorpej static const char *concat(const char *, int); 835ecc953bSthorpej static char *extend(char *, const char *); 845ecc953bSthorpej static int split(const char *, size_t, char *, size_t, int *); 855ecc953bSthorpej static void selectbase(struct devbase *, struct deva *); 8616a8771bSdholland static const char **fixloc(const char *, struct attr *, struct loclist *); 87d767912bSdrochner static const char *makedevstr(devmajor_t, devminor_t); 88d767912bSdrochner static const char *major2name(devmajor_t); 89d767912bSdrochner static devmajor_t dev2major(struct devbase *); 905ecc953bSthorpej 915ecc953bSthorpej extern const char *yyfile; 927aa6070dScube extern int vflag; 935ecc953bSthorpej 945ecc953bSthorpej void 955ecc953bSthorpej initsem(void) 965ecc953bSthorpej { 975ecc953bSthorpej 985ecc953bSthorpej attrtab = ht_new(); 997c7d91e6Suebayasi 1007c7d91e6Suebayasi allattr.a_name = "netbsd"; 1017c7d91e6Suebayasi TAILQ_INIT(&allattr.a_files); 1027c7d91e6Suebayasi (void)ht_insert(attrtab, allattr.a_name, &allattr); 103cd06fea3Suebayasi selectattr(&allattr); 1047c7d91e6Suebayasi 1055ecc953bSthorpej errattr.a_name = "<internal>"; 1065ecc953bSthorpej 1075ecc953bSthorpej TAILQ_INIT(&allbases); 1085ecc953bSthorpej 1095ecc953bSthorpej TAILQ_INIT(&alldevas); 1105ecc953bSthorpej 1115ecc953bSthorpej TAILQ_INIT(&allpspecs); 1125ecc953bSthorpej 1135ecc953bSthorpej cfhashtab = ht_new(); 1145ecc953bSthorpej TAILQ_INIT(&allcf); 1155ecc953bSthorpej 1165ecc953bSthorpej TAILQ_INIT(&alldevi); 1175ecc953bSthorpej errdev.d_name = "<internal>"; 1185ecc953bSthorpej 1195ecc953bSthorpej TAILQ_INIT(&allpseudo); 1205ecc953bSthorpej 1215ecc953bSthorpej TAILQ_INIT(&alldevms); 1225ecc953bSthorpej 1235ecc953bSthorpej s_ifnet = intern("ifnet"); 1245ecc953bSthorpej s_qmark = intern("?"); 1255ecc953bSthorpej s_none = intern("none"); 1265ecc953bSthorpej } 1275ecc953bSthorpej 1285ecc953bSthorpej /* Name of include file just ended (set in scan.l) */ 1295ecc953bSthorpej extern const char *lastfile; 1305ecc953bSthorpej 131a87832feSuebayasi static struct attr * 132da706167Suebayasi finddep(struct attr *a, const char *name) 133da706167Suebayasi { 134da706167Suebayasi struct attrlist *al; 135da706167Suebayasi 136da706167Suebayasi for (al = a->a_deps; al != NULL; al = al->al_next) { 137da706167Suebayasi struct attr *this = al->al_this; 138da706167Suebayasi if (strcmp(this->a_name, name) == 0) 139da706167Suebayasi return this; 140da706167Suebayasi } 141da706167Suebayasi return NULL; 142da706167Suebayasi } 143da706167Suebayasi 144da706167Suebayasi static void 145da706167Suebayasi mergedeps(struct devbase *dev, const char *name) 146da706167Suebayasi { 147da706167Suebayasi struct attr *a, *newa; 148da706167Suebayasi 149c4bac1d0Suebayasi CFGDBG(4, "merging attr `%s' to devbase `%s'", name, dev->d_name); 150da706167Suebayasi a = refattr(dev->d_name); 151da706167Suebayasi if (finddep(a, name) == NULL) { 152da706167Suebayasi newa = refattr(name); 153da706167Suebayasi a->a_deps = attrlist_cons(a->a_deps, newa); 154da706167Suebayasi CFGDBG(3, "attr `%s' merged to attr `%s'", newa->a_name, 155da706167Suebayasi a->a_name); 156da706167Suebayasi } 157da706167Suebayasi } 158da706167Suebayasi 159da706167Suebayasi static void 160da706167Suebayasi fixdev(struct devbase *dev) 161da706167Suebayasi { 162da706167Suebayasi struct attrlist *al; 163da706167Suebayasi struct attr *devattr, *a; 164da706167Suebayasi 165da706167Suebayasi devattr = refattr(dev->d_name); 166da706167Suebayasi if (devattr->a_devclass) 167a87832feSuebayasi panic("%s: dev %s is devclass!", __func__, devattr->a_name); 168da706167Suebayasi 169c4bac1d0Suebayasi CFGDBG(4, "fixing devbase `%s'", dev->d_name); 170da706167Suebayasi for (al = dev->d_attrs; al != NULL; al = al->al_next) { 171da706167Suebayasi a = al->al_this; 172da706167Suebayasi if (a->a_iattr) { 173da706167Suebayasi a->a_refs = addtoattr(a->a_refs, dev); 174c4bac1d0Suebayasi CFGDBG(3, "device `%s' has iattr `%s'", dev->d_name, 175c4bac1d0Suebayasi a->a_name); 176da706167Suebayasi } else if (a->a_devclass != NULL) { 177*c5a6c986Suebayasi if (dev->d_classattr != NULL && dev->d_classattr != a) { 178da706167Suebayasi cfgwarn("device `%s' has multiple classes " 179da706167Suebayasi "(`%s' and `%s')", 180da706167Suebayasi dev->d_name, dev->d_classattr->a_name, 181da706167Suebayasi a->a_name); 182da706167Suebayasi } 183*c5a6c986Suebayasi if (dev->d_classattr == NULL) { 184da706167Suebayasi dev->d_classattr = a; 185c4bac1d0Suebayasi CFGDBG(3, "device `%s' is devclass `%s'", dev->d_name, 186c4bac1d0Suebayasi a->a_name); 187*c5a6c986Suebayasi } 188da706167Suebayasi } else { 189da706167Suebayasi if (strcmp(dev->d_name, a->a_name) != 0) { 190da706167Suebayasi mergedeps(dev, a->a_name); 191da706167Suebayasi } 192da706167Suebayasi } 193da706167Suebayasi } 194da706167Suebayasi } 195da706167Suebayasi 1965ecc953bSthorpej void 1975ecc953bSthorpej enddefs(void) 1985ecc953bSthorpej { 1995ecc953bSthorpej struct devbase *dev; 2005ecc953bSthorpej 201c4bac1d0Suebayasi yyfile = "enddefs"; 202c4bac1d0Suebayasi 2035ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 2045ecc953bSthorpej if (!dev->d_isdef) { 2055ecc953bSthorpej (void)fprintf(stderr, 2065ecc953bSthorpej "%s: device `%s' used but not defined\n", 2075ecc953bSthorpej lastfile, dev->d_name); 2085ecc953bSthorpej errors++; 2095ecc953bSthorpej continue; 2105ecc953bSthorpej } 2115ecc953bSthorpej } 2125ecc953bSthorpej if (errors) { 2135ecc953bSthorpej (void)fprintf(stderr, "*** Stop.\n"); 2145ecc953bSthorpej exit(1); 2155ecc953bSthorpej } 2165ecc953bSthorpej } 2175ecc953bSthorpej 2185ecc953bSthorpej void 2195ecc953bSthorpej setdefmaxusers(int min, int def, int max) 2205ecc953bSthorpej { 2215ecc953bSthorpej 2225ecc953bSthorpej if (min < 1 || min > def || def > max) 223c7295a4cSchristos cfgerror("maxusers must have 1 <= min (%d) <= default (%d) " 224c7295a4cSchristos "<= max (%d)", min, def, max); 2255ecc953bSthorpej else { 2265ecc953bSthorpej minmaxusers = min; 2275ecc953bSthorpej defmaxusers = def; 2285ecc953bSthorpej maxmaxusers = max; 2295ecc953bSthorpej } 2305ecc953bSthorpej } 2315ecc953bSthorpej 2325ecc953bSthorpej void 2335ecc953bSthorpej setmaxusers(int n) 2345ecc953bSthorpej { 2355ecc953bSthorpej 236895e5687Scube if (maxusers == n) { 237c7295a4cSchristos cfgerror("duplicate maxusers parameter"); 2385ecc953bSthorpej return; 2395ecc953bSthorpej } 240895e5687Scube if (vflag && maxusers != 0) 241c7295a4cSchristos cfgwarn("warning: maxusers already defined"); 2425ecc953bSthorpej maxusers = n; 2435ecc953bSthorpej if (n < minmaxusers) { 244c7295a4cSchristos cfgerror("warning: minimum of %d maxusers assumed", 245c7295a4cSchristos minmaxusers); 2465ecc953bSthorpej errors--; /* take it away */ 2475ecc953bSthorpej maxusers = minmaxusers; 2485ecc953bSthorpej } else if (n > maxmaxusers) { 249c7295a4cSchristos cfgerror("warning: maxusers (%d) > %d", n, maxmaxusers); 2505ecc953bSthorpej errors--; 2515ecc953bSthorpej } 2525ecc953bSthorpej } 2535ecc953bSthorpej 2545ecc953bSthorpej void 2555ecc953bSthorpej setident(const char *i) 2565ecc953bSthorpej { 2575ecc953bSthorpej 2584a7be1f9Smrg if (i) 2595ecc953bSthorpej ident = intern(i); 2604a7be1f9Smrg else 2614a7be1f9Smrg ident = NULL; 2625ecc953bSthorpej } 2635ecc953bSthorpej 2645ecc953bSthorpej /* 2655ecc953bSthorpej * Define an attribute, optionally with an interface (a locator list) 2665ecc953bSthorpej * and a set of attribute-dependencies. 2675ecc953bSthorpej * 2685ecc953bSthorpej * Attribute dependencies MAY NOT be interface attributes. 2695ecc953bSthorpej * 2705ecc953bSthorpej * Since an empty locator list is logically different from "no interface", 2715ecc953bSthorpej * all locator lists include a dummy head node, which we discard here. 2725ecc953bSthorpej */ 2735ecc953bSthorpej int 274bb4307a6Suebayasi defattr0(const char *name, struct loclist *locs, struct attrlist *deps, 275bb4307a6Suebayasi int devclass) 276bb4307a6Suebayasi { 277bb4307a6Suebayasi 278bb4307a6Suebayasi if (locs != NULL) 279bb4307a6Suebayasi return defiattr(name, locs, deps, devclass); 280bb4307a6Suebayasi else if (devclass) 281bb4307a6Suebayasi return defdevclass(name, locs, deps, devclass); 282bb4307a6Suebayasi else 283bb4307a6Suebayasi return defattr(name, locs, deps, devclass); 284bb4307a6Suebayasi } 285bb4307a6Suebayasi 286bb4307a6Suebayasi int 28716a8771bSdholland defattr(const char *name, struct loclist *locs, struct attrlist *deps, 2885ecc953bSthorpej int devclass) 2895ecc953bSthorpej { 2905ecc953bSthorpej struct attr *a, *dep; 2914caf067bSdholland struct attrlist *al; 2925ecc953bSthorpej 2935ecc953bSthorpej /* 2945ecc953bSthorpej * If this attribute depends on any others, make sure none of 2955ecc953bSthorpej * the dependencies are interface attributes. 2965ecc953bSthorpej */ 2974caf067bSdholland for (al = deps; al != NULL; al = al->al_next) { 2984caf067bSdholland dep = al->al_this; 2995ecc953bSthorpej if (dep->a_iattr) { 300c7295a4cSchristos cfgerror("`%s' dependency `%s' is an interface " 301c7295a4cSchristos "attribute", name, dep->a_name); 3025ecc953bSthorpej return (1); 3035ecc953bSthorpej } 3045ecc953bSthorpej } 3055ecc953bSthorpej 306bb52c144Suebayasi if (getrefattr(name, &a)) { 307c7295a4cSchristos cfgerror("attribute `%s' already defined", name); 30816a8771bSdholland loclist_destroy(locs); 3095ecc953bSthorpej return (1); 3105ecc953bSthorpej } 311bb52c144Suebayasi if (a == NULL) 312bb52c144Suebayasi a = mkattr(name); 3135ecc953bSthorpej 314a949e288Suebayasi a->a_deps = deps; 315bb4307a6Suebayasi expandattr(a, NULL); 3162f2f3382Suebayasi CFGDBG(3, "attr `%s' defined", a->a_name); 317bb4307a6Suebayasi 318bb4307a6Suebayasi return (0); 319bb4307a6Suebayasi } 320a949e288Suebayasi 3212f2f3382Suebayasi struct attr * 3222f2f3382Suebayasi mkattr(const char *name) 3232f2f3382Suebayasi { 3242f2f3382Suebayasi struct attr *a; 3252f2f3382Suebayasi 3262f2f3382Suebayasi a = ecalloc(1, sizeof *a); 3272f2f3382Suebayasi if (ht_insert(attrtab, name, a)) { 3282f2f3382Suebayasi free(a); 3292f2f3382Suebayasi return NULL; 3302f2f3382Suebayasi } 3312f2f3382Suebayasi a->a_name = name; 3322f2f3382Suebayasi TAILQ_INIT(&a->a_files); 3332f2f3382Suebayasi CFGDBG(3, "attr `%s' allocated", name); 3342f2f3382Suebayasi 3352f2f3382Suebayasi return a; 3362f2f3382Suebayasi } 3372f2f3382Suebayasi 338a949e288Suebayasi /* "interface attribute" initialization */ 339bb4307a6Suebayasi int 340bb4307a6Suebayasi defiattr(const char *name, struct loclist *locs, struct attrlist *deps, 341bb4307a6Suebayasi int devclass) 342bb4307a6Suebayasi { 343bb4307a6Suebayasi struct attr *a; 344bb4307a6Suebayasi int len; 345bb4307a6Suebayasi struct loclist *ll; 346bb4307a6Suebayasi 347bb4307a6Suebayasi if (devclass) 348bb4307a6Suebayasi panic("defattr(%s): locators and devclass", name); 349bb4307a6Suebayasi 350bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 351bb4307a6Suebayasi return (1); 352bb4307a6Suebayasi 353bb4307a6Suebayasi a = getattr(name); 3545ecc953bSthorpej a->a_iattr = 1; 35516a8771bSdholland /* unwrap */ 35616a8771bSdholland a->a_locs = locs->ll_next; 35716a8771bSdholland locs->ll_next = NULL; 35816a8771bSdholland loclist_destroy(locs); 359a949e288Suebayasi len = 0; 360a949e288Suebayasi for (ll = a->a_locs; ll != NULL; ll = ll->ll_next) 361a949e288Suebayasi len++; 362a949e288Suebayasi a->a_loclen = len; 363bb4307a6Suebayasi if (deps) 364bb4307a6Suebayasi CFGDBG(2, "attr `%s' iface with deps", a->a_name); 365bb4307a6Suebayasi return (0); 3665ecc953bSthorpej } 367a949e288Suebayasi 368a949e288Suebayasi /* "device class" initialization */ 369bb4307a6Suebayasi int 370bb4307a6Suebayasi defdevclass(const char *name, struct loclist *locs, struct attrlist *deps, 371bb4307a6Suebayasi int devclass) 372bb4307a6Suebayasi { 373bb4307a6Suebayasi struct attr *a; 374bbfbbde1Schristos char classenum[256], *cp; 3755ecc953bSthorpej int errored = 0; 3765ecc953bSthorpej 377bb4307a6Suebayasi if (deps) 378bb4307a6Suebayasi panic("defattr(%s): dependencies and devclass", name); 379bb4307a6Suebayasi 380bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 381bb4307a6Suebayasi return (1); 382bb4307a6Suebayasi 383bb4307a6Suebayasi a = getattr(name); 384bbfbbde1Schristos (void)snprintf(classenum, sizeof(classenum), "DV_%s", name); 3855ecc953bSthorpej for (cp = classenum + 3; *cp; cp++) { 3865ecc953bSthorpej if (!errored && 3875ecc953bSthorpej (!isalnum((unsigned char)*cp) || 3885ecc953bSthorpej (isalpha((unsigned char)*cp) && !islower((unsigned char)*cp)))) { 389c7295a4cSchristos cfgerror("device class names must be " 390c7295a4cSchristos "lower-case alphanumeric characters"); 3915ecc953bSthorpej errored = 1; 3925ecc953bSthorpej } 3935ecc953bSthorpej *cp = toupper((unsigned char)*cp); 3945ecc953bSthorpej } 3955ecc953bSthorpej a->a_devclass = intern(classenum); 3965ecc953bSthorpej 3975ecc953bSthorpej return (0); 3985ecc953bSthorpej } 3995ecc953bSthorpej 4005ecc953bSthorpej /* 4015ecc953bSthorpej * Return true if the given `error object' is embedded in the given 4025ecc953bSthorpej * pointer list. 4035ecc953bSthorpej */ 4045ecc953bSthorpej static int 4054caf067bSdholland has_errobj(struct attrlist *al, struct attr *obj) 4065ecc953bSthorpej { 4075ecc953bSthorpej 4084caf067bSdholland for (; al != NULL; al = al->al_next) 4094caf067bSdholland if (al->al_this == obj) 4105ecc953bSthorpej return (1); 4115ecc953bSthorpej return (0); 4125ecc953bSthorpej } 4135ecc953bSthorpej 4145ecc953bSthorpej /* 4155ecc953bSthorpej * Return true if the given attribute is embedded in the given 4165ecc953bSthorpej * pointer list. 4175ecc953bSthorpej */ 4185ecc953bSthorpej int 4194caf067bSdholland has_attr(struct attrlist *al, const char *attr) 4205ecc953bSthorpej { 4215ecc953bSthorpej struct attr *a; 4225ecc953bSthorpej 4235ecc953bSthorpej if ((a = getattr(attr)) == NULL) 4245ecc953bSthorpej return (0); 4255ecc953bSthorpej 4264caf067bSdholland for (; al != NULL; al = al->al_next) 4274caf067bSdholland if (al->al_this == a) 4285ecc953bSthorpej return (1); 4295ecc953bSthorpej return (0); 4305ecc953bSthorpej } 4315ecc953bSthorpej 4325ecc953bSthorpej /* 4335ecc953bSthorpej * Add a device base to a list in an attribute (actually, to any list). 4345ecc953bSthorpej * Note that this does not check for duplicates, and does reverse the 4355ecc953bSthorpej * list order, but no one cares anyway. 4365ecc953bSthorpej */ 4375ecc953bSthorpej static struct nvlist * 4385ecc953bSthorpej addtoattr(struct nvlist *l, struct devbase *dev) 4395ecc953bSthorpej { 4405ecc953bSthorpej struct nvlist *n; 4415ecc953bSthorpej 4425ecc953bSthorpej n = newnv(NULL, NULL, dev, 0, l); 4435ecc953bSthorpej return (n); 4445ecc953bSthorpej } 4455ecc953bSthorpej 4465ecc953bSthorpej /* 4475ecc953bSthorpej * Define a device. This may (or may not) also define an interface 4485ecc953bSthorpej * attribute and/or refer to existing attributes. 4495ecc953bSthorpej */ 4505ecc953bSthorpej void 45116a8771bSdholland defdev(struct devbase *dev, struct loclist *loclist, struct attrlist *attrs, 4525ecc953bSthorpej int ispseudo) 4535ecc953bSthorpej { 45416a8771bSdholland struct loclist *ll; 4554caf067bSdholland struct attrlist *al; 4565ecc953bSthorpej 4575ecc953bSthorpej if (dev == &errdev) 4585ecc953bSthorpej goto bad; 4595ecc953bSthorpej if (dev->d_isdef) { 460c7295a4cSchristos cfgerror("redefinition of `%s'", dev->d_name); 4615ecc953bSthorpej goto bad; 4625ecc953bSthorpej } 4635ecc953bSthorpej 4645ecc953bSthorpej dev->d_isdef = 1; 4655ecc953bSthorpej if (has_errobj(attrs, &errattr)) 4665ecc953bSthorpej goto bad; 4675ecc953bSthorpej 4685ecc953bSthorpej /* 4695ecc953bSthorpej * Handle implicit attribute definition from locator list. Do 4705ecc953bSthorpej * this before scanning the `at' list so that we can have, e.g.: 4715ecc953bSthorpej * device foo at other, foo { slot = -1 } 4725ecc953bSthorpej * (where you can plug in a foo-bus extender to a foo-bus). 4735ecc953bSthorpej */ 4745ecc953bSthorpej if (loclist != NULL) { 47516a8771bSdholland ll = loclist; 4765ecc953bSthorpej loclist = NULL; /* defattr disposes of them for us */ 477bb4307a6Suebayasi if (defiattr(dev->d_name, ll, NULL, 0)) 4785ecc953bSthorpej goto bad; 4794caf067bSdholland attrs = attrlist_cons(attrs, getattr(dev->d_name)); 4804caf067bSdholland /* This used to be stored but was never used */ 4814caf067bSdholland /* attrs->al_name = dev->d_name; */ 482c454f920Scube } 483c454f920Scube 484c130d400Scube /* 485c130d400Scube * Pseudo-devices can have children. Consider them as 486c130d400Scube * attaching at root. 487c130d400Scube */ 488c454f920Scube if (ispseudo) { 4894caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) 4904caf067bSdholland if (al->al_this->a_iattr) 491c454f920Scube break; 4924caf067bSdholland if (al != NULL) { 493b66156c7Sdrochner if (ispseudo < 2) { 494b66156c7Sdrochner if (version >= 20080610) 495b66156c7Sdrochner cfgerror("interface attribute on " 496b66156c7Sdrochner "non-device pseudo `%s'", dev->d_name); 497b66156c7Sdrochner else { 498b66156c7Sdrochner ispseudo = 2; 499b66156c7Sdrochner } 500b66156c7Sdrochner } 501c130d400Scube ht_insert(devroottab, dev->d_name, dev); 5025ecc953bSthorpej } 503b66156c7Sdrochner } 5045ecc953bSthorpej 5055ecc953bSthorpej /* Committed! Set up fields. */ 5065ecc953bSthorpej dev->d_ispseudo = ispseudo; 5075ecc953bSthorpej dev->d_attrs = attrs; 5085ecc953bSthorpej dev->d_classattr = NULL; /* for now */ 509da706167Suebayasi CFGDBG(3, "dev `%s' defined", dev->d_name); 5105ecc953bSthorpej 5115ecc953bSthorpej /* 512a2dd9676Suebayasi * Implicit attribute definition for device. 513a2dd9676Suebayasi */ 514a2dd9676Suebayasi refattr(dev->d_name); 515a2dd9676Suebayasi 516a2dd9676Suebayasi /* 5175ecc953bSthorpej * For each interface attribute this device refers to, add this 5185ecc953bSthorpej * device to its reference list. This makes, e.g., finding all 5195ecc953bSthorpej * "scsi"s easier. 5205ecc953bSthorpej * 5215ecc953bSthorpej * While looking through the attributes, set up the device 5225ecc953bSthorpej * class if any are devclass attributes (and error out if the 5235ecc953bSthorpej * device has two classes). 5245ecc953bSthorpej */ 5254caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 526da706167Suebayasi /* 527da706167Suebayasi * Implicit attribute definition for device dependencies. 528da706167Suebayasi */ 529da706167Suebayasi refattr(dev->d_name); 5305ecc953bSthorpej } 5315ecc953bSthorpej return; 5325ecc953bSthorpej bad: 53316a8771bSdholland loclist_destroy(loclist); 5344caf067bSdholland attrlist_destroyall(attrs); 5355ecc953bSthorpej } 5365ecc953bSthorpej 5375ecc953bSthorpej /* 5385ecc953bSthorpej * Look up a devbase. Also makes sure it is a reasonable name, 5395ecc953bSthorpej * i.e., does not end in a digit or contain special characters. 5405ecc953bSthorpej */ 5415ecc953bSthorpej struct devbase * 5425ecc953bSthorpej getdevbase(const char *name) 5435ecc953bSthorpej { 544c7295a4cSchristos const u_char *p; 5455ecc953bSthorpej struct devbase *dev; 5465ecc953bSthorpej 547c7295a4cSchristos p = (const u_char *)name; 5485ecc953bSthorpej if (!isalpha(*p)) 5495ecc953bSthorpej goto badname; 5505ecc953bSthorpej while (*++p) { 5515ecc953bSthorpej if (!isalnum(*p) && *p != '_') 5525ecc953bSthorpej goto badname; 5535ecc953bSthorpej } 5545ecc953bSthorpej if (isdigit(*--p)) { 5555ecc953bSthorpej badname: 556c7295a4cSchristos cfgerror("bad device base name `%s'", name); 5575ecc953bSthorpej return (&errdev); 5585ecc953bSthorpej } 5595ecc953bSthorpej dev = ht_lookup(devbasetab, name); 5605ecc953bSthorpej if (dev == NULL) { 5615ecc953bSthorpej dev = ecalloc(1, sizeof *dev); 5625ecc953bSthorpej dev->d_name = name; 5635ecc953bSthorpej dev->d_isdef = 0; 564d767912bSdrochner dev->d_major = NODEVMAJOR; 5655ecc953bSthorpej dev->d_attrs = NULL; 5665ecc953bSthorpej dev->d_ihead = NULL; 5675ecc953bSthorpej dev->d_ipp = &dev->d_ihead; 5685ecc953bSthorpej dev->d_ahead = NULL; 5695ecc953bSthorpej dev->d_app = &dev->d_ahead; 5705ecc953bSthorpej dev->d_umax = 0; 5715ecc953bSthorpej TAILQ_INSERT_TAIL(&allbases, dev, d_next); 5725ecc953bSthorpej if (ht_insert(devbasetab, name, dev)) 5735ecc953bSthorpej panic("getdevbase(%s)", name); 574da706167Suebayasi CFGDBG(3, "devbase defined `%s'", dev->d_name); 5755ecc953bSthorpej } 5765ecc953bSthorpej return (dev); 5775ecc953bSthorpej } 5785ecc953bSthorpej 5795ecc953bSthorpej /* 5805ecc953bSthorpej * Define some of a device's allowable parent attachments. 5815ecc953bSthorpej * There may be a list of (plain) attributes. 5825ecc953bSthorpej */ 5835ecc953bSthorpej void 5845ecc953bSthorpej defdevattach(struct deva *deva, struct devbase *dev, struct nvlist *atlist, 5854caf067bSdholland struct attrlist *attrs) 5865ecc953bSthorpej { 5875ecc953bSthorpej struct nvlist *nv; 5884caf067bSdholland struct attrlist *al; 5895ecc953bSthorpej struct attr *a; 5905ecc953bSthorpej struct deva *da; 5915ecc953bSthorpej 5925ecc953bSthorpej if (dev == &errdev) 5935ecc953bSthorpej goto bad; 5945ecc953bSthorpej if (deva == NULL) 5955ecc953bSthorpej deva = getdevattach(dev->d_name); 5965ecc953bSthorpej if (deva == &errdeva) 5975ecc953bSthorpej goto bad; 5985ecc953bSthorpej if (!dev->d_isdef) { 599c7295a4cSchristos cfgerror("attaching undefined device `%s'", dev->d_name); 6005ecc953bSthorpej goto bad; 6015ecc953bSthorpej } 6025ecc953bSthorpej if (deva->d_isdef) { 603c7295a4cSchristos cfgerror("redefinition of `%s'", deva->d_name); 6045ecc953bSthorpej goto bad; 6055ecc953bSthorpej } 6065ecc953bSthorpej if (dev->d_ispseudo) { 607c7295a4cSchristos cfgerror("pseudo-devices can't attach"); 6085ecc953bSthorpej goto bad; 6095ecc953bSthorpej } 6105ecc953bSthorpej 6115ecc953bSthorpej deva->d_isdef = 1; 6125ecc953bSthorpej if (has_errobj(attrs, &errattr)) 6135ecc953bSthorpej goto bad; 6144caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 6154caf067bSdholland a = al->al_this; 6165ecc953bSthorpej if (a == &errattr) 6175ecc953bSthorpej continue; /* already complained */ 6185ecc953bSthorpej if (a->a_iattr || a->a_devclass != NULL) 619c7295a4cSchristos cfgerror("`%s' is not a plain attribute", a->a_name); 6205ecc953bSthorpej } 6215ecc953bSthorpej 6225ecc953bSthorpej /* Committed! Set up fields. */ 6235ecc953bSthorpej deva->d_attrs = attrs; 6245ecc953bSthorpej deva->d_atlist = atlist; 6255ecc953bSthorpej deva->d_devbase = dev; 6262f2f3382Suebayasi CFGDBG(3, "deva `%s' defined", deva->d_name); 6272f2f3382Suebayasi 6282f2f3382Suebayasi /* 629a5a68b71Suebayasi * Implicit attribute definition for device attachment. 6302f2f3382Suebayasi */ 6312f2f3382Suebayasi refattr(deva->d_name); 6325ecc953bSthorpej 6335ecc953bSthorpej /* 6345ecc953bSthorpej * Turn the `at' list into interface attributes (map each 6355ecc953bSthorpej * nv_name to an attribute, or to NULL for root), and add 6365ecc953bSthorpej * this device to those attributes, so that children can 6375ecc953bSthorpej * be listed at this particular device if they are supported 6385ecc953bSthorpej * by that attribute. 6395ecc953bSthorpej */ 6405ecc953bSthorpej for (nv = atlist; nv != NULL; nv = nv->nv_next) { 6415ecc953bSthorpej if (nv->nv_name == NULL) 6425ecc953bSthorpej nv->nv_ptr = a = NULL; /* at root */ 6435ecc953bSthorpej else 6445ecc953bSthorpej nv->nv_ptr = a = getattr(nv->nv_name); 6455ecc953bSthorpej if (a == &errattr) 6465ecc953bSthorpej continue; /* already complained */ 6475ecc953bSthorpej 6485ecc953bSthorpej /* 6495ecc953bSthorpej * Make sure that an attachment spec doesn't 6505ecc953bSthorpej * already say how to attach to this attribute. 6515ecc953bSthorpej */ 6525ecc953bSthorpej for (da = dev->d_ahead; da != NULL; da = da->d_bsame) 6535ecc953bSthorpej if (onlist(da->d_atlist, a)) 654c7295a4cSchristos cfgerror("attach at `%s' already done by `%s'", 6555ecc953bSthorpej a ? a->a_name : "root", da->d_name); 6565ecc953bSthorpej 657c130d400Scube if (a == NULL) { 658c130d400Scube ht_insert(devroottab, dev->d_name, dev); 6595ecc953bSthorpej continue; /* at root; don't add */ 660c130d400Scube } 6615ecc953bSthorpej if (!a->a_iattr) 662c7295a4cSchristos cfgerror("%s cannot be at plain attribute `%s'", 6635ecc953bSthorpej dev->d_name, a->a_name); 6645ecc953bSthorpej else 6655ecc953bSthorpej a->a_devs = addtoattr(a->a_devs, dev); 6665ecc953bSthorpej } 6675ecc953bSthorpej 6685ecc953bSthorpej /* attach to parent */ 6695ecc953bSthorpej *dev->d_app = deva; 6705ecc953bSthorpej dev->d_app = &deva->d_bsame; 6715ecc953bSthorpej return; 6725ecc953bSthorpej bad: 6735ecc953bSthorpej nvfreel(atlist); 6744caf067bSdholland attrlist_destroyall(attrs); 6755ecc953bSthorpej } 6765ecc953bSthorpej 6775ecc953bSthorpej /* 6785ecc953bSthorpej * Look up a device attachment. Also makes sure it is a reasonable 6795ecc953bSthorpej * name, i.e., does not contain digits or special characters. 6805ecc953bSthorpej */ 6815ecc953bSthorpej struct deva * 6825ecc953bSthorpej getdevattach(const char *name) 6835ecc953bSthorpej { 684c7295a4cSchristos const u_char *p; 6855ecc953bSthorpej struct deva *deva; 6865ecc953bSthorpej 687c7295a4cSchristos p = (const u_char *)name; 6885ecc953bSthorpej if (!isalpha(*p)) 6895ecc953bSthorpej goto badname; 6905ecc953bSthorpej while (*++p) { 6915ecc953bSthorpej if (!isalnum(*p) && *p != '_') 6925ecc953bSthorpej goto badname; 6935ecc953bSthorpej } 6945ecc953bSthorpej if (isdigit(*--p)) { 6955ecc953bSthorpej badname: 696c7295a4cSchristos cfgerror("bad device attachment name `%s'", name); 6975ecc953bSthorpej return (&errdeva); 6985ecc953bSthorpej } 6995ecc953bSthorpej deva = ht_lookup(devatab, name); 7005ecc953bSthorpej if (deva == NULL) { 7015ecc953bSthorpej deva = ecalloc(1, sizeof *deva); 7025ecc953bSthorpej deva->d_name = name; 7035ecc953bSthorpej deva->d_bsame = NULL; 7045ecc953bSthorpej deva->d_isdef = 0; 7055ecc953bSthorpej deva->d_devbase = NULL; 7065ecc953bSthorpej deva->d_atlist = NULL; 7075ecc953bSthorpej deva->d_attrs = NULL; 7085ecc953bSthorpej deva->d_ihead = NULL; 7095ecc953bSthorpej deva->d_ipp = &deva->d_ihead; 7105ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevas, deva, d_next); 7115ecc953bSthorpej if (ht_insert(devatab, name, deva)) 7125ecc953bSthorpej panic("getdeva(%s)", name); 7135ecc953bSthorpej } 7145ecc953bSthorpej return (deva); 7155ecc953bSthorpej } 7165ecc953bSthorpej 7175ecc953bSthorpej /* 7185ecc953bSthorpej * Look up an attribute. 7195ecc953bSthorpej */ 7205ecc953bSthorpej struct attr * 7215ecc953bSthorpej getattr(const char *name) 7225ecc953bSthorpej { 7235ecc953bSthorpej struct attr *a; 7245ecc953bSthorpej 7255ecc953bSthorpej if ((a = ht_lookup(attrtab, name)) == NULL) { 726c7295a4cSchristos cfgerror("undefined attribute `%s'", name); 7275ecc953bSthorpej a = &errattr; 7285ecc953bSthorpej } 7295ecc953bSthorpej return (a); 7305ecc953bSthorpej } 7315ecc953bSthorpej 7325ecc953bSthorpej /* 7332f2f3382Suebayasi * Implicit attribute definition. 7342f2f3382Suebayasi */ 73551deed3eSuebayasi struct attr * 7362f2f3382Suebayasi refattr(const char *name) 7372f2f3382Suebayasi { 73851deed3eSuebayasi struct attr *a; 7392f2f3382Suebayasi 74051deed3eSuebayasi if ((a = ht_lookup(attrtab, name)) == NULL) 74151deed3eSuebayasi a = mkattr(name); 74251deed3eSuebayasi return a; 7432f2f3382Suebayasi } 7442f2f3382Suebayasi 745bb52c144Suebayasi int 746bb52c144Suebayasi getrefattr(const char *name, struct attr **ra) 747bb52c144Suebayasi { 748bb52c144Suebayasi struct attr *a; 749bb52c144Suebayasi 750bb52c144Suebayasi a = ht_lookup(attrtab, name); 751bb52c144Suebayasi if (a == NULL) { 752bb52c144Suebayasi *ra = NULL; 753bb52c144Suebayasi return (0); 754bb52c144Suebayasi } 755bb52c144Suebayasi /* 756bb52c144Suebayasi * Check if the existing attr is only referenced, not really defined. 757bb52c144Suebayasi */ 758bb52c144Suebayasi if (a->a_deps == NULL && 759bb52c144Suebayasi a->a_iattr == 0 && 760bb52c144Suebayasi a->a_devclass == 0) { 761bb52c144Suebayasi *ra = a; 762bb52c144Suebayasi return (0); 763bb52c144Suebayasi } 764bb52c144Suebayasi return (1); 765bb52c144Suebayasi } 766bb52c144Suebayasi 7672f2f3382Suebayasi /* 7685ecc953bSthorpej * Recursively expand an attribute and its dependencies, checking for 7695ecc953bSthorpej * cycles, and invoking a callback for each attribute found. 7705ecc953bSthorpej */ 7715ecc953bSthorpej void 7725ecc953bSthorpej expandattr(struct attr *a, void (*callback)(struct attr *)) 7735ecc953bSthorpej { 7744caf067bSdholland struct attrlist *al; 7755ecc953bSthorpej struct attr *dep; 7765ecc953bSthorpej 7775ecc953bSthorpej if (a->a_expanding) { 778c7295a4cSchristos cfgerror("circular dependency on attribute `%s'", a->a_name); 7795ecc953bSthorpej return; 7805ecc953bSthorpej } 7815ecc953bSthorpej 7825ecc953bSthorpej a->a_expanding = 1; 7835ecc953bSthorpej 7845ecc953bSthorpej /* First expand all of this attribute's dependencies. */ 7854caf067bSdholland for (al = a->a_deps; al != NULL; al = al->al_next) { 7864caf067bSdholland dep = al->al_this; 7875ecc953bSthorpej expandattr(dep, callback); 7885ecc953bSthorpej } 7895ecc953bSthorpej 7905ecc953bSthorpej /* ...and now invoke the callback for ourself. */ 7915ecc953bSthorpej if (callback != NULL) 7925ecc953bSthorpej (*callback)(a); 7935ecc953bSthorpej 7945ecc953bSthorpej a->a_expanding = 0; 7955ecc953bSthorpej } 7965ecc953bSthorpej 7975ecc953bSthorpej /* 7985ecc953bSthorpej * Set the major device number for a device, so that it can be used 7995ecc953bSthorpej * as a root/dumps "on" device in a configuration. 8005ecc953bSthorpej */ 8015ecc953bSthorpej void 802d767912bSdrochner setmajor(struct devbase *d, devmajor_t n) 8035ecc953bSthorpej { 8045ecc953bSthorpej 805d767912bSdrochner if (d != &errdev && d->d_major != NODEVMAJOR) 806d767912bSdrochner cfgerror("device `%s' is already major %d", 807d767912bSdrochner d->d_name, d->d_major); 8085ecc953bSthorpej else 8095ecc953bSthorpej d->d_major = n; 8105ecc953bSthorpej } 8115ecc953bSthorpej 8125ecc953bSthorpej const char * 813d767912bSdrochner major2name(devmajor_t maj) 8145ecc953bSthorpej { 8155ecc953bSthorpej struct devbase *dev; 8165ecc953bSthorpej struct devm *dm; 8175ecc953bSthorpej 8185ecc953bSthorpej if (!do_devsw) { 8195ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 8205ecc953bSthorpej if (dev->d_major == maj) 8215ecc953bSthorpej return (dev->d_name); 8225ecc953bSthorpej } 8235ecc953bSthorpej } else { 8245ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 8255ecc953bSthorpej if (dm->dm_bmajor == maj) 8265ecc953bSthorpej return (dm->dm_name); 8275ecc953bSthorpej } 8285ecc953bSthorpej } 8295ecc953bSthorpej return (NULL); 8305ecc953bSthorpej } 8315ecc953bSthorpej 832d767912bSdrochner devmajor_t 8335ecc953bSthorpej dev2major(struct devbase *dev) 8345ecc953bSthorpej { 8355ecc953bSthorpej struct devm *dm; 8365ecc953bSthorpej 8375ecc953bSthorpej if (!do_devsw) 8385ecc953bSthorpej return (dev->d_major); 8395ecc953bSthorpej 8405ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 8415ecc953bSthorpej if (strcmp(dm->dm_name, dev->d_name) == 0) 8425ecc953bSthorpej return (dm->dm_bmajor); 8435ecc953bSthorpej } 844d767912bSdrochner return (NODEVMAJOR); 8455ecc953bSthorpej } 8465ecc953bSthorpej 8475ecc953bSthorpej /* 8485ecc953bSthorpej * Make a string description of the device at maj/min. 8495ecc953bSthorpej */ 8505ecc953bSthorpej static const char * 851d767912bSdrochner makedevstr(devmajor_t maj, devminor_t min) 8525ecc953bSthorpej { 853c7295a4cSchristos const char *devicename; 8545ecc953bSthorpej char buf[32]; 8555ecc953bSthorpej 856c7295a4cSchristos devicename = major2name(maj); 857c7295a4cSchristos if (devicename == NULL) 858d767912bSdrochner (void)snprintf(buf, sizeof(buf), "<%d/%d>", maj, min); 8595ecc953bSthorpej else 860d767912bSdrochner (void)snprintf(buf, sizeof(buf), "%s%d%c", devicename, 861d767912bSdrochner min / maxpartitions, (min % maxpartitions) + 'a'); 8625ecc953bSthorpej 8635ecc953bSthorpej return (intern(buf)); 8645ecc953bSthorpej } 8655ecc953bSthorpej 8665ecc953bSthorpej /* 8675ecc953bSthorpej * Map things like "ra0b" => makedev(major("ra"), 0*maxpartitions + 'b'-'a'). 8685ecc953bSthorpej * Handle the case where the device number is given but there is no 8695ecc953bSthorpej * corresponding name, and map NULL to the default. 8705ecc953bSthorpej */ 8715ecc953bSthorpej static int 8725ecc953bSthorpej resolve(struct nvlist **nvp, const char *name, const char *what, 8735ecc953bSthorpej struct nvlist *dflt, int part) 8745ecc953bSthorpej { 8755ecc953bSthorpej struct nvlist *nv; 8765ecc953bSthorpej struct devbase *dev; 8775ecc953bSthorpej const char *cp; 878d767912bSdrochner devmajor_t maj; 879d767912bSdrochner devminor_t min; 8800001b928Schristos int i, l; 8815ecc953bSthorpej int unit; 8825ecc953bSthorpej char buf[NAMESIZE]; 8835ecc953bSthorpej 8845cc303e1Slukem if ((part -= 'a') >= maxpartitions || part < 0) 8855ecc953bSthorpej panic("resolve"); 8865ecc953bSthorpej if ((nv = *nvp) == NULL) { 8875ecc953bSthorpej dev_t d = NODEV; 8885ecc953bSthorpej /* 8895ecc953bSthorpej * Apply default. Easiest to do this by number. 8905ecc953bSthorpej * Make sure to retain NODEVness, if this is dflt's disposition. 8915ecc953bSthorpej */ 8925cc303e1Slukem if ((dev_t)dflt->nv_num != NODEV) { 8930001b928Schristos maj = major(dflt->nv_num); 8940001b928Schristos min = ((minor(dflt->nv_num) / maxpartitions) * 8955ecc953bSthorpej maxpartitions) + part; 8965ecc953bSthorpej d = makedev(maj, min); 8975ecc953bSthorpej cp = makedevstr(maj, min); 8985ecc953bSthorpej } else 8995ecc953bSthorpej cp = NULL; 9005ecc953bSthorpej *nvp = nv = newnv(NULL, cp, NULL, d, NULL); 9015ecc953bSthorpej } 9025cc303e1Slukem if ((dev_t)nv->nv_num != NODEV) { 9035ecc953bSthorpej /* 9045ecc953bSthorpej * By the numbers. Find the appropriate major number 9055ecc953bSthorpej * to make a name. 9065ecc953bSthorpej */ 9070001b928Schristos maj = major(nv->nv_num); 9080001b928Schristos min = minor(nv->nv_num); 9095ecc953bSthorpej nv->nv_str = makedevstr(maj, min); 9105ecc953bSthorpej return (0); 9115ecc953bSthorpej } 9125ecc953bSthorpej 9135ecc953bSthorpej if (nv->nv_str == NULL || nv->nv_str == s_qmark) 9145ecc953bSthorpej /* 9155ecc953bSthorpej * Wildcarded or unspecified; leave it as NODEV. 9165ecc953bSthorpej */ 9175ecc953bSthorpej return (0); 9185ecc953bSthorpej 9195ecc953bSthorpej /* 9205ecc953bSthorpej * The normal case: things like "ra2b". Check for partition 9215ecc953bSthorpej * suffix, remove it if there, and split into name ("ra") and 9225ecc953bSthorpej * unit (2). 9235ecc953bSthorpej */ 9245ecc953bSthorpej l = i = strlen(nv->nv_str); 9255ecc953bSthorpej cp = &nv->nv_str[l]; 9265ecc953bSthorpej if (l > 1 && *--cp >= 'a' && *cp < 'a' + maxpartitions && 9275ecc953bSthorpej isdigit((unsigned char)cp[-1])) { 9285ecc953bSthorpej l--; 9295ecc953bSthorpej part = *cp - 'a'; 9305ecc953bSthorpej } 9315ecc953bSthorpej cp = nv->nv_str; 9325ecc953bSthorpej if (split(cp, l, buf, sizeof buf, &unit)) { 933c7295a4cSchristos cfgerror("%s: invalid %s device name `%s'", name, what, cp); 9345ecc953bSthorpej return (1); 9355ecc953bSthorpej } 9365ecc953bSthorpej dev = ht_lookup(devbasetab, intern(buf)); 9375ecc953bSthorpej if (dev == NULL) { 938c7295a4cSchristos cfgerror("%s: device `%s' does not exist", name, buf); 9395ecc953bSthorpej return (1); 9405ecc953bSthorpej } 9415ecc953bSthorpej 9425ecc953bSthorpej /* 9435ecc953bSthorpej * Check for the magic network interface attribute, and 9445ecc953bSthorpej * don't bother making a device number. 9455ecc953bSthorpej */ 9465ecc953bSthorpej if (has_attr(dev->d_attrs, s_ifnet)) { 9470001b928Schristos nv->nv_num = NODEV; 9485ecc953bSthorpej nv->nv_ifunit = unit; /* XXX XXX XXX */ 9495ecc953bSthorpej } else { 9505ecc953bSthorpej maj = dev2major(dev); 9515cc303e1Slukem if (maj == NODEVMAJOR) { 952c7295a4cSchristos cfgerror("%s: can't make %s device from `%s'", 9535ecc953bSthorpej name, what, nv->nv_str); 9545ecc953bSthorpej return (1); 9555ecc953bSthorpej } 9560001b928Schristos nv->nv_num = makedev(maj, unit * maxpartitions + part); 9575ecc953bSthorpej } 9585ecc953bSthorpej 9595ecc953bSthorpej nv->nv_name = dev->d_name; 9605ecc953bSthorpej return (0); 9615ecc953bSthorpej } 9625ecc953bSthorpej 9635ecc953bSthorpej /* 9645ecc953bSthorpej * Add a completed configuration to the list. 9655ecc953bSthorpej */ 9665ecc953bSthorpej void 9675ecc953bSthorpej addconf(struct config *cf0) 9685ecc953bSthorpej { 9695ecc953bSthorpej struct config *cf; 9705ecc953bSthorpej const char *name; 9715ecc953bSthorpej 9725ecc953bSthorpej name = cf0->cf_name; 9735ecc953bSthorpej cf = ecalloc(1, sizeof *cf); 9745ecc953bSthorpej if (ht_insert(cfhashtab, name, cf)) { 975c7295a4cSchristos cfgerror("configuration `%s' already defined", name); 9765ecc953bSthorpej free(cf); 9775ecc953bSthorpej goto bad; 9785ecc953bSthorpej } 9795ecc953bSthorpej *cf = *cf0; 9805ecc953bSthorpej 9815ecc953bSthorpej /* 9825ecc953bSthorpej * Resolve the root device. 9835ecc953bSthorpej */ 984cd429362Serh if (cf->cf_root == NULL) { 985c7295a4cSchristos cfgerror("%s: no root device specified", name); 9865ecc953bSthorpej goto bad; 9875ecc953bSthorpej } 988cd429362Serh if (cf->cf_root && cf->cf_root->nv_str != s_qmark) { 989cd429362Serh struct nvlist *nv; 990cd429362Serh nv = cf->cf_root; 9915ecc953bSthorpej if (resolve(&cf->cf_root, name, "root", nv, 'a')) 9925ecc953bSthorpej goto bad; 9935ecc953bSthorpej } 9945ecc953bSthorpej 9955ecc953bSthorpej /* 9965ecc953bSthorpej * Resolve the dump device. 9975ecc953bSthorpej */ 9985ecc953bSthorpej if (cf->cf_dump == NULL || cf->cf_dump->nv_str == s_qmark) { 9995ecc953bSthorpej /* 10005ecc953bSthorpej * Wildcarded dump device is equivalent to unspecified. 10015ecc953bSthorpej */ 10025ecc953bSthorpej cf->cf_dump = NULL; 10035ecc953bSthorpej } else if (cf->cf_dump->nv_str == s_none) { 10045ecc953bSthorpej /* 10055ecc953bSthorpej * Operator has requested that no dump device should be 10065ecc953bSthorpej * configured; do nothing. 10075ecc953bSthorpej */ 10085ecc953bSthorpej } else { 10095ecc953bSthorpej if (resolve(&cf->cf_dump, name, "dumps", cf->cf_dump, 'b')) 10105ecc953bSthorpej goto bad; 10115ecc953bSthorpej } 10125ecc953bSthorpej 10135ecc953bSthorpej /* Wildcarded fstype is `unspecified'. */ 10145ecc953bSthorpej if (cf->cf_fstype == s_qmark) 10155ecc953bSthorpej cf->cf_fstype = NULL; 10165ecc953bSthorpej 10175ecc953bSthorpej TAILQ_INSERT_TAIL(&allcf, cf, cf_next); 10185ecc953bSthorpej return; 10195ecc953bSthorpej bad: 10205ecc953bSthorpej nvfreel(cf0->cf_root); 10215ecc953bSthorpej nvfreel(cf0->cf_dump); 10225ecc953bSthorpej } 10235ecc953bSthorpej 10245ecc953bSthorpej void 10255ecc953bSthorpej setconf(struct nvlist **npp, const char *what, struct nvlist *v) 10265ecc953bSthorpej { 10275ecc953bSthorpej 10285ecc953bSthorpej if (*npp != NULL) { 1029c7295a4cSchristos cfgerror("duplicate %s specification", what); 10305ecc953bSthorpej nvfreel(v); 10315ecc953bSthorpej } else 10325ecc953bSthorpej *npp = v; 10335ecc953bSthorpej } 10345ecc953bSthorpej 10355ecc953bSthorpej void 103642b52b8aScube delconf(const char *name) 103742b52b8aScube { 103842b52b8aScube struct config *cf; 103942b52b8aScube 104042b52b8aScube if (ht_lookup(cfhashtab, name) == NULL) { 1041c7295a4cSchristos cfgerror("configuration `%s' undefined", name); 104242b52b8aScube return; 104342b52b8aScube } 104442b52b8aScube (void)ht_remove(cfhashtab, name); 104542b52b8aScube 104642b52b8aScube TAILQ_FOREACH(cf, &allcf, cf_next) 104742b52b8aScube if (!strcmp(cf->cf_name, name)) 104842b52b8aScube break; 104942b52b8aScube if (cf == NULL) 105042b52b8aScube panic("lost configuration `%s'", name); 105142b52b8aScube 105242b52b8aScube TAILQ_REMOVE(&allcf, cf, cf_next); 105342b52b8aScube } 105442b52b8aScube 105542b52b8aScube void 10565ecc953bSthorpej setfstype(const char **fstp, const char *v) 10575ecc953bSthorpej { 10585ecc953bSthorpej 10595ecc953bSthorpej if (*fstp != NULL) { 1060c7295a4cSchristos cfgerror("multiple fstype specifications"); 10615ecc953bSthorpej return; 10625ecc953bSthorpej } 10635ecc953bSthorpej 10645ecc953bSthorpej if (v != s_qmark && OPT_FSOPT(v)) { 1065c7295a4cSchristos cfgerror("\"%s\" is not a configured file system", v); 10665ecc953bSthorpej return; 10675ecc953bSthorpej } 10685ecc953bSthorpej 10695ecc953bSthorpej *fstp = v; 10705ecc953bSthorpej } 10715ecc953bSthorpej 10725ecc953bSthorpej static struct devi * 10735ecc953bSthorpej newdevi(const char *name, int unit, struct devbase *d) 10745ecc953bSthorpej { 10755ecc953bSthorpej struct devi *i; 10765ecc953bSthorpej 10775ecc953bSthorpej i = ecalloc(1, sizeof *i); 10785ecc953bSthorpej i->i_name = name; 10795ecc953bSthorpej i->i_unit = unit; 10805ecc953bSthorpej i->i_base = d; 10815ecc953bSthorpej i->i_bsame = NULL; 10825ecc953bSthorpej i->i_asame = NULL; 10835ecc953bSthorpej i->i_alias = NULL; 10845ecc953bSthorpej i->i_at = NULL; 10855ecc953bSthorpej i->i_pspec = NULL; 10865ecc953bSthorpej i->i_atdeva = NULL; 10875ecc953bSthorpej i->i_locs = NULL; 10885ecc953bSthorpej i->i_cfflags = 0; 10895ecc953bSthorpej i->i_lineno = currentline(); 10900dbd1c0eScube i->i_srcfile = yyfile; 10917aa6070dScube i->i_active = DEVI_ORPHAN; /* Proper analysis comes later */ 1092a31ff6b4Scube i->i_level = devilevel; 109390ac64deSpooka i->i_pseudoroot = 0; 10945ecc953bSthorpej if (unit >= d->d_umax) 10955ecc953bSthorpej d->d_umax = unit + 1; 10965ecc953bSthorpej return (i); 10975ecc953bSthorpej } 10985ecc953bSthorpej 10995ecc953bSthorpej /* 11005ecc953bSthorpej * Add the named device as attaching to the named attribute (or perhaps 11015ecc953bSthorpej * another device instead) plus unit number. 11025ecc953bSthorpej */ 11035ecc953bSthorpej void 110416a8771bSdholland adddev(const char *name, const char *at, struct loclist *loclist, int flags) 11055ecc953bSthorpej { 11065ecc953bSthorpej struct devi *i; /* the new instance */ 11075ecc953bSthorpej struct pspec *p; /* and its pspec */ 11085ecc953bSthorpej struct attr *attr; /* attribute that allows attach */ 11095ecc953bSthorpej struct devbase *ib; /* i->i_base */ 11105ecc953bSthorpej struct devbase *ab; /* not NULL => at another dev */ 11114caf067bSdholland struct attrlist *al; 11125ecc953bSthorpej struct deva *iba; /* devbase attachment used */ 11135ecc953bSthorpej const char *cp; 11145ecc953bSthorpej int atunit; 11155ecc953bSthorpej char atbuf[NAMESIZE]; 11165ecc953bSthorpej int hit; 11175ecc953bSthorpej 11185ecc953bSthorpej ab = NULL; 11195ecc953bSthorpej iba = NULL; 11205ecc953bSthorpej if (at == NULL) { 11215ecc953bSthorpej /* "at root" */ 11225ecc953bSthorpej p = NULL; 11235ecc953bSthorpej if ((i = getdevi(name)) == NULL) 11245ecc953bSthorpej goto bad; 11255ecc953bSthorpej /* 11265ecc953bSthorpej * Must warn about i_unit > 0 later, after taking care of 11275ecc953bSthorpej * the STAR cases (we could do non-star's here but why 11285ecc953bSthorpej * bother?). Make sure this device can be at root. 11295ecc953bSthorpej */ 11305ecc953bSthorpej ib = i->i_base; 11315ecc953bSthorpej hit = 0; 11325ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 11335ecc953bSthorpej if (onlist(iba->d_atlist, NULL)) { 11345ecc953bSthorpej hit = 1; 11355ecc953bSthorpej break; 11365ecc953bSthorpej } 11375ecc953bSthorpej if (!hit) { 1138c7295a4cSchristos cfgerror("`%s' cannot attach to the root", ib->d_name); 11395ec393e9Scube i->i_active = DEVI_BROKEN; 11405ecc953bSthorpej goto bad; 11415ecc953bSthorpej } 11425ecc953bSthorpej attr = &errattr; /* a convenient "empty" attr */ 11435ecc953bSthorpej } else { 11445ecc953bSthorpej if (split(at, strlen(at), atbuf, sizeof atbuf, &atunit)) { 1145c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 11465ecc953bSthorpej /* (void)getdevi(name); -- ??? */ 11475ecc953bSthorpej goto bad; 11485ecc953bSthorpej } 11495ecc953bSthorpej if ((i = getdevi(name)) == NULL) 11505ecc953bSthorpej goto bad; 11515ecc953bSthorpej ib = i->i_base; 11525ecc953bSthorpej 11535ecc953bSthorpej /* 11545ecc953bSthorpej * Devices can attach to two types of things: Attributes, 11555ecc953bSthorpej * and other devices (which have the appropriate attributes 11565ecc953bSthorpej * to allow attachment). 11575ecc953bSthorpej * 11585ecc953bSthorpej * (1) If we're attached to an attribute, then we don't need 11595ecc953bSthorpej * look at the parent base device to see what attributes 11605ecc953bSthorpej * it has, and make sure that we can attach to them. 11615ecc953bSthorpej * 11625ecc953bSthorpej * (2) If we're attached to a real device (i.e. named in 11635ecc953bSthorpej * the config file), we want to remember that so that 11645ecc953bSthorpej * at cross-check time, if the device we're attached to 11655ecc953bSthorpej * is missing but other devices which also provide the 11665ecc953bSthorpej * attribute are present, we don't get a false "OK." 11675ecc953bSthorpej * 11685ecc953bSthorpej * (3) If the thing we're attached to is an attribute 11695ecc953bSthorpej * but is actually named in the config file, we still 11705ecc953bSthorpej * have to remember its devbase. 11715ecc953bSthorpej */ 11725ecc953bSthorpej cp = intern(atbuf); 11735ecc953bSthorpej 11745ecc953bSthorpej /* Figure out parent's devbase, to satisfy case (3). */ 11755ecc953bSthorpej ab = ht_lookup(devbasetab, cp); 11765ecc953bSthorpej 11775ecc953bSthorpej /* Find out if it's an attribute. */ 11785ecc953bSthorpej attr = ht_lookup(attrtab, cp); 11795ecc953bSthorpej 11805ecc953bSthorpej /* Make sure we're _really_ attached to the attr. Case (1). */ 11815ecc953bSthorpej if (attr != NULL && onlist(attr->a_devs, ib)) 11825ecc953bSthorpej goto findattachment; 11835ecc953bSthorpej 11845ecc953bSthorpej /* 11855ecc953bSthorpej * Else a real device, and not just an attribute. Case (2). 11865ecc953bSthorpej * 11875ecc953bSthorpej * Have to work a bit harder to see whether we have 11885ecc953bSthorpej * something like "tg0 at esp0" (where esp is merely 11895ecc953bSthorpej * not an attribute) or "tg0 at nonesuch0" (where 11905ecc953bSthorpej * nonesuch is not even a device). 11915ecc953bSthorpej */ 11925ecc953bSthorpej if (ab == NULL) { 1193c7295a4cSchristos cfgerror("%s at %s: `%s' unknown", 11945ecc953bSthorpej name, at, atbuf); 11955ec393e9Scube i->i_active = DEVI_BROKEN; 11965ecc953bSthorpej goto bad; 11975ecc953bSthorpej } 11985ecc953bSthorpej 11995ecc953bSthorpej /* 12005ecc953bSthorpej * See if the named parent carries an attribute 12015ecc953bSthorpej * that allows it to supervise device ib. 12025ecc953bSthorpej */ 12034caf067bSdholland for (al = ab->d_attrs; al != NULL; al = al->al_next) { 12044caf067bSdholland attr = al->al_this; 12055ecc953bSthorpej if (onlist(attr->a_devs, ib)) 12065ecc953bSthorpej goto findattachment; 12075ecc953bSthorpej } 1208c7295a4cSchristos cfgerror("`%s' cannot attach to `%s'", ib->d_name, atbuf); 12095ec393e9Scube i->i_active = DEVI_BROKEN; 12105ecc953bSthorpej goto bad; 12115ecc953bSthorpej 12125ecc953bSthorpej findattachment: 12135ecc953bSthorpej /* 12145ecc953bSthorpej * Find the parent spec. If a matching one has not yet been 12155ecc953bSthorpej * created, create one. 12165ecc953bSthorpej */ 12175ecc953bSthorpej p = getpspec(attr, ab, atunit); 12185ecc953bSthorpej p->p_devs = newnv(NULL, NULL, i, 0, p->p_devs); 12195ecc953bSthorpej 12205ecc953bSthorpej /* find out which attachment it uses */ 12215ecc953bSthorpej hit = 0; 12225ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 12235ecc953bSthorpej if (onlist(iba->d_atlist, attr)) { 12245ecc953bSthorpej hit = 1; 12255ecc953bSthorpej break; 12265ecc953bSthorpej } 12275ecc953bSthorpej if (!hit) 12285ecc953bSthorpej panic("adddev: can't figure out attachment"); 12295ecc953bSthorpej } 12305ec393e9Scube if ((i->i_locs = fixloc(name, attr, loclist)) == NULL) { 12315ec393e9Scube i->i_active = DEVI_BROKEN; 12325ecc953bSthorpej goto bad; 12335ec393e9Scube } 12345ecc953bSthorpej i->i_at = at; 12355ecc953bSthorpej i->i_pspec = p; 12365ecc953bSthorpej i->i_atdeva = iba; 12375ecc953bSthorpej i->i_cfflags = flags; 12385ecc953bSthorpej 12395ecc953bSthorpej *iba->d_ipp = i; 12405ecc953bSthorpej iba->d_ipp = &i->i_asame; 12415ecc953bSthorpej 12425ecc953bSthorpej /* all done, fall into ... */ 12435ecc953bSthorpej bad: 124416a8771bSdholland loclist_destroy(loclist); 12455ecc953bSthorpej return; 12465ecc953bSthorpej } 12475ecc953bSthorpej 12485ecc953bSthorpej void 12497b7c582aScube deldevi(const char *name, const char *at) 12505ecc953bSthorpej { 12517b7c582aScube struct devi *firsti, *i; 12525ecc953bSthorpej struct devbase *d; 12535ecc953bSthorpej int unit; 12545ecc953bSthorpej char base[NAMESIZE]; 12555ecc953bSthorpej 12565ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1257c7295a4cSchristos cfgerror("invalid device name `%s'", name); 12585ecc953bSthorpej return; 12595ecc953bSthorpej } 12605ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 12615ecc953bSthorpej if (d == NULL) { 1262c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 12635ecc953bSthorpej return; 12645ecc953bSthorpej } 12655ecc953bSthorpej if (d->d_ispseudo) { 1266c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 12675ecc953bSthorpej return; 12685ecc953bSthorpej } 12695ecc953bSthorpej if ((firsti = ht_lookup(devitab, name)) == NULL) { 1270c7295a4cSchristos cfgerror("`%s' not defined", name); 12715ecc953bSthorpej return; 12725ecc953bSthorpej } 12737b7c582aScube if (at == NULL && firsti->i_at == NULL) { 1274e499d8b5Scube /* 'at root' */ 12757b7c582aScube remove_devi(firsti); 12767b7c582aScube return; 12777b7c582aScube } else if (at != NULL) 12787b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 1279bfc250f2Scube if (i->i_active != DEVI_BROKEN && 1280bfc250f2Scube strcmp(at, i->i_at) == 0) { 12817b7c582aScube remove_devi(i); 12825ecc953bSthorpej return; 12835ecc953bSthorpej } 1284c7295a4cSchristos cfgerror("`%s' at `%s' not found", name, at ? at : "root"); 1285e499d8b5Scube } 12865ecc953bSthorpej 12877b7c582aScube static void 12887b7c582aScube remove_devi(struct devi *i) 12897b7c582aScube { 12907b7c582aScube struct devbase *d = i->i_base; 12917b7c582aScube struct devi *f, *j, **ppi; 12927b7c582aScube struct deva *iba; 12937b7c582aScube 12947b7c582aScube f = ht_lookup(devitab, i->i_name); 12956a6299ebScube if (f == NULL) 12966a6299ebScube panic("remove_devi(): instance %s disappeared from devitab", 12976a6299ebScube i->i_name); 12987b7c582aScube 1299bfc250f2Scube if (i->i_active == DEVI_BROKEN) { 1300bfc250f2Scube cfgerror("not removing broken instance `%s'", i->i_name); 1301bfc250f2Scube return; 1302bfc250f2Scube } 1303bfc250f2Scube 1304e499d8b5Scube /* 1305e499d8b5Scube * We have the device instance, i. 1306e499d8b5Scube * We have to: 1307e499d8b5Scube * - delete the alias 1308e499d8b5Scube * 1309e499d8b5Scube * If the devi was an alias of an already listed devi, all is 1310e499d8b5Scube * good we don't have to do more. 1311e499d8b5Scube * If it was the first alias, we have to replace i's entry in 1312e499d8b5Scube * d's list by its first alias. 1313e499d8b5Scube * If it was the only entry, we must remove i's entry from d's 1314e499d8b5Scube * list. 1315e499d8b5Scube */ 13167b7c582aScube if (i != f) { 13177b7c582aScube for (j = f; j->i_alias != i; j = j->i_alias); 13187b7c582aScube j->i_alias = i->i_alias; 13193b405775Scube } else { 13203b405775Scube if (i->i_alias == NULL) { 1321e499d8b5Scube /* No alias, must unlink the entry from devitab */ 13227b7c582aScube ht_remove(devitab, i->i_name); 13237b7c582aScube j = i->i_bsame; 13243b405775Scube } else { 1325e499d8b5Scube /* Or have the first alias replace i in d's list */ 1326e499d8b5Scube i->i_alias->i_bsame = i->i_bsame; 13277b7c582aScube j = i->i_alias; 13287b7c582aScube if (i == f) 13297b7c582aScube ht_replace(devitab, i->i_name, i->i_alias); 13303b405775Scube } 13313b405775Scube 1332e499d8b5Scube /* 1333e499d8b5Scube * - remove/replace the instance from the devbase's list 1334e499d8b5Scube * 1335e499d8b5Scube * A double-linked list would make this much easier. Oh, well, 1336e499d8b5Scube * what is done is done. 1337e499d8b5Scube */ 1338e499d8b5Scube for (ppi = &d->d_ihead; 1339e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_bsame != i; 1340e499d8b5Scube ppi = &(*ppi)->i_bsame); 1341e499d8b5Scube if (*ppi == NULL) 1342c3414672Scube panic("deldev: dev (%s) doesn't list the devi" 1343c3414672Scube " (%s at %s)", d->d_name, i->i_name, i->i_at); 13447b7c582aScube f = *ppi; 13457b7c582aScube if (f == i) 1346c3414672Scube /* That implies d->d_ihead == i */ 13477b7c582aScube *ppi = j; 1348e499d8b5Scube else 13497b7c582aScube (*ppi)->i_bsame = j; 1350e499d8b5Scube if (d->d_ipp == &i->i_bsame) { 13513b405775Scube if (i->i_alias == NULL) { 13527b7c582aScube if (f == i) 1353e499d8b5Scube d->d_ipp = &d->d_ihead; 1354e499d8b5Scube else 13557b7c582aScube d->d_ipp = &f->i_bsame; 13563b405775Scube } else 13573b405775Scube d->d_ipp = &i->i_alias->i_bsame; 1358e499d8b5Scube } 1359e499d8b5Scube } 1360e499d8b5Scube /* 1361e499d8b5Scube * - delete the attachment instance 1362e499d8b5Scube */ 1363e499d8b5Scube iba = i->i_atdeva; 1364e499d8b5Scube for (ppi = &iba->d_ihead; 1365e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_asame != i; 1366e499d8b5Scube ppi = &(*ppi)->i_asame); 1367e499d8b5Scube if (*ppi == NULL) 1368e499d8b5Scube panic("deldev: deva (%s) doesn't list the devi (%s)", 1369e499d8b5Scube iba->d_name, i->i_name); 13707b7c582aScube f = *ppi; 13717b7c582aScube if (f == i) 1372c3414672Scube /* That implies iba->d_ihead == i */ 1373e499d8b5Scube *ppi = i->i_asame; 1374e499d8b5Scube else 1375e499d8b5Scube (*ppi)->i_asame = i->i_asame; 1376e499d8b5Scube if (iba->d_ipp == &i->i_asame) { 13777b7c582aScube if (f == i) 1378e499d8b5Scube iba->d_ipp = &iba->d_ihead; 1379e499d8b5Scube else 13807b7c582aScube iba->d_ipp = &f->i_asame; 1381e499d8b5Scube } 1382e499d8b5Scube /* 1383e499d8b5Scube * - delete the pspec 1384e499d8b5Scube */ 1385e499d8b5Scube if (i->i_pspec) { 1386e499d8b5Scube struct pspec *p = i->i_pspec; 1387e499d8b5Scube struct nvlist *nv, *onv; 1388e499d8b5Scube 1389e499d8b5Scube /* Double-linked nvlist anyone? */ 1390c0024066Scube for (nv = p->p_devs; nv->nv_next != NULL; nv = nv->nv_next) { 1391e499d8b5Scube if (nv->nv_next && nv->nv_next->nv_ptr == i) { 1392e499d8b5Scube onv = nv->nv_next; 1393e499d8b5Scube nv->nv_next = onv->nv_next; 1394e499d8b5Scube nvfree(onv); 1395e499d8b5Scube break; 1396c0024066Scube } 1397c0024066Scube if (nv->nv_ptr == i) { 1398e499d8b5Scube /* nv is p->p_devs in that case */ 1399e499d8b5Scube p->p_devs = nv->nv_next; 1400e499d8b5Scube nvfree(nv); 1401e499d8b5Scube break; 1402e499d8b5Scube } 1403e499d8b5Scube } 1404e499d8b5Scube if (p->p_devs == NULL) 1405e499d8b5Scube TAILQ_REMOVE(&allpspecs, p, p_list); 1406e499d8b5Scube } 1407e499d8b5Scube /* 1408e499d8b5Scube * - delete the alldevi entry 1409e499d8b5Scube */ 1410e499d8b5Scube TAILQ_REMOVE(&alldevi, i, i_next); 1411e499d8b5Scube ndevi--; 14127aa6070dScube /* 14137aa6070dScube * Put it in deaddevitab 1414a31ff6b4Scube * 1415a31ff6b4Scube * Each time a devi is removed, devilevel is increased so that later on 1416a31ff6b4Scube * it is possible to tell if an instance was added before or after the 1417a31ff6b4Scube * removal of its parent. 1418a31ff6b4Scube * 1419a31ff6b4Scube * For active instances, i_level contains the number of devi removed so 1420a31ff6b4Scube * far, and for dead devis, it contains its index. 14217aa6070dScube */ 1422a31ff6b4Scube i->i_level = devilevel++; 14237aa6070dScube i->i_alias = NULL; 14247aa6070dScube f = ht_lookup(deaddevitab, i->i_name); 14257aa6070dScube if (f == NULL) { 14267aa6070dScube if (ht_insert(deaddevitab, i->i_name, i)) 14277aa6070dScube panic("remove_devi(%s) - can't add to deaddevitab", 14287aa6070dScube i->i_name); 14297aa6070dScube } else { 14307aa6070dScube for (j = f; j->i_alias != NULL; j = j->i_alias); 14317aa6070dScube j->i_alias = i; 14327aa6070dScube } 1433e499d8b5Scube /* 14345d1e8b27Swiz * - reconstruct d->d_umax 1435e499d8b5Scube */ 1436e499d8b5Scube d->d_umax = 0; 1437e499d8b5Scube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 1438e499d8b5Scube if (i->i_unit >= d->d_umax) 1439e499d8b5Scube d->d_umax = i->i_unit + 1; 14405ecc953bSthorpej } 14415ecc953bSthorpej 14425ecc953bSthorpej void 14437b7c582aScube deldeva(const char *at) 14447b7c582aScube { 14457b7c582aScube int unit; 14467b7c582aScube const char *cp; 14477b7c582aScube struct devbase *d, *ad; 14487b7c582aScube struct devi *i, *j; 14497b7c582aScube struct attr *a; 14507b7c582aScube struct pspec *p; 14517b7c582aScube struct nvlist *nv, *stack = NULL; 14527b7c582aScube 14537b7c582aScube if (at == NULL) { 14547b7c582aScube TAILQ_FOREACH(i, &alldevi, i_next) 14557b7c582aScube if (i->i_at == NULL) 14567b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 14577b7c582aScube } else { 14587b7c582aScube int l; 14597b7c582aScube 14607b7c582aScube l = strlen(at) - 1; 14617b7c582aScube if (at[l] == '?' || isdigit((unsigned char)at[l])) { 14627b7c582aScube char base[NAMESIZE]; 14637b7c582aScube 14647b7c582aScube if (split(at, l+1, base, sizeof base, &unit)) { 1465c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 14667b7c582aScube return; 14677b7c582aScube } 14687b7c582aScube cp = intern(base); 14697b7c582aScube } else { 14707b7c582aScube cp = intern(at); 14717b7c582aScube unit = STAR; 14727b7c582aScube } 14737b7c582aScube 14747b7c582aScube ad = ht_lookup(devbasetab, cp); 14757b7c582aScube a = ht_lookup(attrtab, cp); 14767b7c582aScube if (a == NULL) { 1477c7295a4cSchristos cfgerror("unknown attachment attribute or device `%s'", 14787b7c582aScube cp); 14797b7c582aScube return; 14807b7c582aScube } 14817b7c582aScube if (!a->a_iattr) { 1482c7295a4cSchristos cfgerror("plain attribute `%s' cannot have children", 14837b7c582aScube a->a_name); 14847b7c582aScube return; 14857b7c582aScube } 14867b7c582aScube 14877b7c582aScube /* 14887b7c582aScube * remove_devi() makes changes to the devbase's list and the 14897b7c582aScube * alias list, * so the actual deletion of the instances must 14907b7c582aScube * be delayed. 14917b7c582aScube */ 14927b7c582aScube for (nv = a->a_devs; nv != NULL; nv = nv->nv_next) { 14937b7c582aScube d = nv->nv_ptr; 14947b7c582aScube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 14957b7c582aScube for (j = i; j != NULL; j = j->i_alias) { 14967b7c582aScube /* Ignore devices at root */ 14977b7c582aScube if (j->i_at == NULL) 14987b7c582aScube continue; 14997b7c582aScube p = j->i_pspec; 15007b7c582aScube /* 15017b7c582aScube * There are three cases: 15027b7c582aScube * 15037b7c582aScube * 1. unit is not STAR. Consider 'at' 15047b7c582aScube * to be explicit, even if it 15057b7c582aScube * references an interface 15067b7c582aScube * attribute. 15077b7c582aScube * 15087b7c582aScube * 2. unit is STAR and 'at' references 15097b7c582aScube * a real device. Look for pspec 15107b7c582aScube * that have a matching p_atdev 15117b7c582aScube * field. 15127b7c582aScube * 15137b7c582aScube * 3. unit is STAR and 'at' references 15147b7c582aScube * an interface attribute. Look 15157b7c582aScube * for pspec that have a matching 15167b7c582aScube * p_iattr field. 15177b7c582aScube */ 15187b7c582aScube if ((unit != STAR && /* Case */ 15197b7c582aScube !strcmp(j->i_at, at)) || /* 1 */ 15207b7c582aScube (unit == STAR && 15217b7c582aScube ((ad != NULL && /* Case */ 15227b7c582aScube p->p_atdev == ad) || /* 2 */ 15237b7c582aScube (ad == NULL && /* Case */ 15247b7c582aScube p->p_iattr == a)))) /* 3 */ 15257b7c582aScube stack = newnv(NULL, NULL, j, 0, 15267b7c582aScube stack); 15277b7c582aScube } 15287b7c582aScube } 15297b7c582aScube } 15307b7c582aScube 15317b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 15327b7c582aScube remove_devi(nv->nv_ptr); 1533e50e4ee4Scube nvfreel(stack); 15347b7c582aScube } 15357b7c582aScube 15367b7c582aScube void 15377b7c582aScube deldev(const char *name) 15387b7c582aScube { 15397b7c582aScube int l; 15407b7c582aScube struct devi *firsti, *i; 15417b7c582aScube struct nvlist *nv, *stack = NULL; 15427b7c582aScube 15437b7c582aScube l = strlen(name) - 1; 15447b7c582aScube if (name[l] == '*' || isdigit((unsigned char)name[l])) { 15457b7c582aScube /* `no mydev0' or `no mydev*' */ 15467b7c582aScube firsti = ht_lookup(devitab, name); 15477b7c582aScube if (firsti == NULL) { 1548c7295a4cSchristos cfgerror("unknown instance %s", name); 15497b7c582aScube return; 15507b7c582aScube } 15517b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 15527b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 15537b7c582aScube } else { 15547b7c582aScube struct devbase *d = ht_lookup(devbasetab, name); 15557b7c582aScube 15567b7c582aScube if (d == NULL) { 1557c7295a4cSchristos cfgerror("unknown device %s", name); 15587b7c582aScube return; 15597b7c582aScube } 156071af9028Scube if (d->d_ispseudo) { 1561c7295a4cSchristos cfgerror("%s is a pseudo-device; " 156271af9028Scube "use \"no pseudo-device %s\" instead", name, 156371af9028Scube name); 156471af9028Scube return; 156571af9028Scube } 15667b7c582aScube 15677b7c582aScube for (firsti = d->d_ihead; firsti != NULL; 15687b7c582aScube firsti = firsti->i_bsame) 15697b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 15707b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 15717b7c582aScube } 15727b7c582aScube 15737b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 15747b7c582aScube remove_devi(nv->nv_ptr); 1575e50e4ee4Scube nvfreel(stack); 15767b7c582aScube } 15777b7c582aScube 157800ed8a38Spooka /* 157900ed8a38Spooka * Insert given device "name" into devroottab. In case "name" 158000ed8a38Spooka * designates a pure interface attribute, create a fake device 158100ed8a38Spooka * instance for the attribute and insert that into the roottab 158200ed8a38Spooka * (this scheme avoids mucking around with the orphanage analysis). 158300ed8a38Spooka */ 15847b7c582aScube void 158590ac64deSpooka addpseudoroot(const char *name) 158690ac64deSpooka { 1587194e1c80Spooka char buf[NAMESIZE]; 1588194e1c80Spooka int unit; 1589194e1c80Spooka struct attr *attr; 159090ac64deSpooka struct devi *i; 159190ac64deSpooka struct deva *iba; 159290ac64deSpooka struct devbase *ib; 159390ac64deSpooka 1594194e1c80Spooka if (split(name, strlen(name), buf, sizeof(buf), &unit)) { 1595194e1c80Spooka cfgerror("invalid pseudo-root name `%s'", name); 1596194e1c80Spooka return; 1597194e1c80Spooka } 1598194e1c80Spooka 1599194e1c80Spooka /* 160000ed8a38Spooka * Prefer device because devices with locators define an 160100ed8a38Spooka * implicit interface attribute. However, if a device is 160200ed8a38Spooka * not available, try to attach to the interface attribute. 160300ed8a38Spooka * This makes sure adddev() doesn't get confused when we 160400ed8a38Spooka * are really attaching to a device (alternatively we maybe 160500ed8a38Spooka * could specify a non-NULL atlist to defdevattach() below). 1606194e1c80Spooka */ 160700ed8a38Spooka ib = ht_lookup(devbasetab, intern(buf)); 160800ed8a38Spooka if (ib == NULL) { 1609194e1c80Spooka struct devbase *fakedev; 1610194e1c80Spooka char fakename[NAMESIZE]; 1611194e1c80Spooka 161200ed8a38Spooka attr = ht_lookup(attrtab, intern(buf)); 161300ed8a38Spooka if (!(attr && attr->a_iattr)) { 161400ed8a38Spooka cfgerror("pseudo-root `%s' not available", name); 161500ed8a38Spooka return; 161600ed8a38Spooka } 161700ed8a38Spooka 1618194e1c80Spooka /* 1619194e1c80Spooka * here we cheat a bit: create a fake devbase with the 1620194e1c80Spooka * interface attribute and instantiate it. quick, cheap, 1621194e1c80Spooka * dirty & bad for you, much like the stuff in the fridge. 1622194e1c80Spooka * and, it works, since the pseudoroot device is not included 1623194e1c80Spooka * in ioconf, just used by config to make sure we start from 1624194e1c80Spooka * the right place. 1625194e1c80Spooka */ 162600ed8a38Spooka snprintf(fakename, sizeof(fakename), "%s_devattrs", buf); 1627194e1c80Spooka fakedev = getdevbase(intern(fakename)); 1628194e1c80Spooka fakedev->d_isdef = 1; 1629194e1c80Spooka fakedev->d_ispseudo = 0; 16304caf067bSdholland fakedev->d_attrs = attrlist_cons(NULL, attr); 1631194e1c80Spooka defdevattach(NULL, fakedev, NULL, NULL); 1632194e1c80Spooka 1633194e1c80Spooka if (unit == STAR) 1634194e1c80Spooka snprintf(buf, sizeof(buf), "%s*", fakename); 1635194e1c80Spooka else 1636194e1c80Spooka snprintf(buf, sizeof(buf), "%s%d", fakename, unit); 1637194e1c80Spooka name = buf; 1638194e1c80Spooka } 1639194e1c80Spooka 1640194e1c80Spooka /* ok, everything should be set up, so instantiate a fake device */ 164190ac64deSpooka i = getdevi(name); 164290ac64deSpooka if (i == NULL) 164300ed8a38Spooka panic("device `%s' expected to be present", name); 164490ac64deSpooka ib = i->i_base; 1645194e1c80Spooka iba = ib->d_ahead; 164690ac64deSpooka 164790ac64deSpooka i->i_atdeva = iba; 164890ac64deSpooka i->i_cfflags = 0; 164990ac64deSpooka i->i_locs = fixloc(name, &errattr, NULL); 165090ac64deSpooka i->i_pseudoroot = 1; 165190ac64deSpooka i->i_active = DEVI_ORPHAN; /* set active by kill_orphans() */ 165290ac64deSpooka 165390ac64deSpooka *iba->d_ipp = i; 165490ac64deSpooka iba->d_ipp = &i->i_asame; 165590ac64deSpooka 165690ac64deSpooka ht_insert(devroottab, ib->d_name, ib); 165790ac64deSpooka } 165890ac64deSpooka 165990ac64deSpooka void 16605ecc953bSthorpej addpseudo(const char *name, int number) 16615ecc953bSthorpej { 16625ecc953bSthorpej struct devbase *d; 16635ecc953bSthorpej struct devi *i; 16645ecc953bSthorpej 16655ecc953bSthorpej d = ht_lookup(devbasetab, name); 16665ecc953bSthorpej if (d == NULL) { 1667c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16685ecc953bSthorpej return; 16695ecc953bSthorpej } 16705ecc953bSthorpej if (!d->d_ispseudo) { 1671c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 16725ecc953bSthorpej return; 16735ecc953bSthorpej } 16745ecc953bSthorpej if (ht_lookup(devitab, name) != NULL) { 1675c7295a4cSchristos cfgerror("`%s' already defined", name); 16765ecc953bSthorpej return; 16775ecc953bSthorpej } 16785ecc953bSthorpej i = newdevi(name, number - 1, d); /* foo 16 => "foo0..foo15" */ 16795ecc953bSthorpej if (ht_insert(devitab, name, i)) 16805ecc953bSthorpej panic("addpseudo(%s)", name); 16817b7c582aScube /* Useful to retrieve the instance from the devbase */ 16827b7c582aScube d->d_ihead = i; 16837aa6070dScube i->i_active = DEVI_ACTIVE; 16845ecc953bSthorpej TAILQ_INSERT_TAIL(&allpseudo, i, i_next); 16855ecc953bSthorpej } 16865ecc953bSthorpej 16875ecc953bSthorpej void 16885ecc953bSthorpej delpseudo(const char *name) 16895ecc953bSthorpej { 16905ecc953bSthorpej struct devbase *d; 16915ecc953bSthorpej struct devi *i; 16925ecc953bSthorpej 16935ecc953bSthorpej d = ht_lookup(devbasetab, name); 16945ecc953bSthorpej if (d == NULL) { 1695c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16965ecc953bSthorpej return; 16975ecc953bSthorpej } 16985ecc953bSthorpej if (!d->d_ispseudo) { 1699c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 17005ecc953bSthorpej return; 17015ecc953bSthorpej } 17025ecc953bSthorpej if ((i = ht_lookup(devitab, name)) == NULL) { 1703c7295a4cSchristos cfgerror("`%s' not defined", name); 17045ecc953bSthorpej return; 17055ecc953bSthorpej } 17065ecc953bSthorpej d->d_umax = 0; /* clear neads-count entries */ 17077aa6070dScube d->d_ihead = NULL; /* make sure it won't be considered active */ 17085ecc953bSthorpej TAILQ_REMOVE(&allpseudo, i, i_next); 17095ecc953bSthorpej if (ht_remove(devitab, name)) 17105ecc953bSthorpej panic("delpseudo(%s) - can't remove from devitab", name); 17117aa6070dScube if (ht_insert(deaddevitab, name, i)) 17127aa6070dScube panic("delpseudo(%s) - can't add to deaddevitab", name); 17135ecc953bSthorpej } 17145ecc953bSthorpej 17155ecc953bSthorpej void 1716d767912bSdrochner adddevm(const char *name, devmajor_t cmajor, devmajor_t bmajor, 17179483bda7Sdholland struct condexpr *cond, struct nvlist *nv_nodes) 17185ecc953bSthorpej { 17195ecc953bSthorpej struct devm *dm; 17205ecc953bSthorpej 1721d767912bSdrochner if (cmajor != NODEVMAJOR && (cmajor < 0 || cmajor >= 4096)) { 1722c7295a4cSchristos cfgerror("character major %d is invalid", cmajor); 17239483bda7Sdholland condexpr_destroy(cond); 17243da3ab25Spooka nvfreel(nv_nodes); 17255ecc953bSthorpej return; 17265ecc953bSthorpej } 17275ecc953bSthorpej 1728d767912bSdrochner if (bmajor != NODEVMAJOR && (bmajor < 0 || bmajor >= 4096)) { 1729c7295a4cSchristos cfgerror("block major %d is invalid", bmajor); 17309483bda7Sdholland condexpr_destroy(cond); 17313da3ab25Spooka nvfreel(nv_nodes); 17325ecc953bSthorpej return; 17335ecc953bSthorpej } 1734d767912bSdrochner if (cmajor == NODEVMAJOR && bmajor == NODEVMAJOR) { 1735c7295a4cSchristos cfgerror("both character/block majors are not specified"); 17369483bda7Sdholland condexpr_destroy(cond); 17373da3ab25Spooka nvfreel(nv_nodes); 17385ecc953bSthorpej return; 17395ecc953bSthorpej } 17405ecc953bSthorpej 17415ecc953bSthorpej dm = ecalloc(1, sizeof(*dm)); 17425ecc953bSthorpej dm->dm_srcfile = yyfile; 17435ecc953bSthorpej dm->dm_srcline = currentline(); 17445ecc953bSthorpej dm->dm_name = name; 17455ecc953bSthorpej dm->dm_cmajor = cmajor; 17465ecc953bSthorpej dm->dm_bmajor = bmajor; 17479483bda7Sdholland dm->dm_opts = cond; 17483da3ab25Spooka dm->dm_devnodes = nv_nodes; 17495ecc953bSthorpej 17505ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevms, dm, dm_next); 17515ecc953bSthorpej 17525ecc953bSthorpej maxcdevm = MAX(maxcdevm, dm->dm_cmajor); 17535ecc953bSthorpej maxbdevm = MAX(maxbdevm, dm->dm_bmajor); 17545ecc953bSthorpej } 17555ecc953bSthorpej 17567aa6070dScube int 17575ecc953bSthorpej fixdevis(void) 17585ecc953bSthorpej { 17595ecc953bSthorpej struct devi *i; 17607aa6070dScube int error = 0; 17615ecc953bSthorpej 17625ecc953bSthorpej TAILQ_FOREACH(i, &alldevi, i_next) 17637aa6070dScube if (i->i_active == DEVI_ACTIVE) 17645ecc953bSthorpej selectbase(i->i_base, i->i_atdeva); 17657aa6070dScube else if (i->i_active == DEVI_ORPHAN) { 1766c130d400Scube /* 1767c130d400Scube * At this point, we can't have instances for which 1768c130d400Scube * i_at or i_pspec are NULL. 1769c130d400Scube */ 17707aa6070dScube ++error; 1771c7295a4cSchristos cfgxerror(i->i_srcfile, i->i_lineno, 17720dbd1c0eScube "`%s at %s' is orphaned (%s `%s' found)", 1773c130d400Scube i->i_name, i->i_at, i->i_pspec->p_atunit == WILD ? 1774c130d400Scube "nothing matching" : "no", i->i_at); 17757aa6070dScube } else if (vflag && i->i_active == DEVI_IGNORED) 1776c7295a4cSchristos cfgxwarn(i->i_srcfile, i->i_lineno, "ignoring " 1777c7295a4cSchristos "explicitly orphaned instance `%s at %s'", 1778c7295a4cSchristos i->i_name, i->i_at); 17797aa6070dScube 17807aa6070dScube if (error) 17817aa6070dScube return error; 17825ecc953bSthorpej 17835ecc953bSthorpej TAILQ_FOREACH(i, &allpseudo, i_next) 17847aa6070dScube if (i->i_active == DEVI_ACTIVE) 17855ecc953bSthorpej selectbase(i->i_base, NULL); 17867aa6070dScube return 0; 17875ecc953bSthorpej } 17885ecc953bSthorpej 17895ecc953bSthorpej /* 17905ecc953bSthorpej * Look up a parent spec, creating a new one if it does not exist. 17915ecc953bSthorpej */ 17925ecc953bSthorpej static struct pspec * 17935ecc953bSthorpej getpspec(struct attr *attr, struct devbase *ab, int atunit) 17945ecc953bSthorpej { 17955ecc953bSthorpej struct pspec *p; 17965ecc953bSthorpej 17975ecc953bSthorpej TAILQ_FOREACH(p, &allpspecs, p_list) { 17985ecc953bSthorpej if (p->p_iattr == attr && 17995ecc953bSthorpej p->p_atdev == ab && 18005ecc953bSthorpej p->p_atunit == atunit) 18015ecc953bSthorpej return (p); 18025ecc953bSthorpej } 18035ecc953bSthorpej 18045ecc953bSthorpej p = ecalloc(1, sizeof(*p)); 18055ecc953bSthorpej 18065ecc953bSthorpej p->p_iattr = attr; 18075ecc953bSthorpej p->p_atdev = ab; 18085ecc953bSthorpej p->p_atunit = atunit; 18095ecc953bSthorpej p->p_inst = npspecs++; 1810c130d400Scube p->p_active = 0; 18115ecc953bSthorpej 18125ecc953bSthorpej TAILQ_INSERT_TAIL(&allpspecs, p, p_list); 18135ecc953bSthorpej 18145ecc953bSthorpej return (p); 18155ecc953bSthorpej } 18165ecc953bSthorpej 18175ecc953bSthorpej /* 18185ecc953bSthorpej * Define a new instance of a specific device. 18195ecc953bSthorpej */ 18205ecc953bSthorpej static struct devi * 18215ecc953bSthorpej getdevi(const char *name) 18225ecc953bSthorpej { 18235ecc953bSthorpej struct devi *i, *firsti; 18245ecc953bSthorpej struct devbase *d; 18255ecc953bSthorpej int unit; 18265ecc953bSthorpej char base[NAMESIZE]; 18275ecc953bSthorpej 18285ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1829c7295a4cSchristos cfgerror("invalid device name `%s'", name); 18305ecc953bSthorpej return (NULL); 18315ecc953bSthorpej } 18325ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 18335ecc953bSthorpej if (d == NULL) { 1834c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 18355ecc953bSthorpej return (NULL); 18365ecc953bSthorpej } 18375ecc953bSthorpej if (d->d_ispseudo) { 1838c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 18395ecc953bSthorpej return (NULL); 18405ecc953bSthorpej } 18415ecc953bSthorpej firsti = ht_lookup(devitab, name); 18425ecc953bSthorpej i = newdevi(name, unit, d); 18435ecc953bSthorpej if (firsti == NULL) { 18445ecc953bSthorpej if (ht_insert(devitab, name, i)) 18455ecc953bSthorpej panic("getdevi(%s)", name); 18465ecc953bSthorpej *d->d_ipp = i; 18475ecc953bSthorpej d->d_ipp = &i->i_bsame; 18485ecc953bSthorpej } else { 18495ecc953bSthorpej while (firsti->i_alias) 18505ecc953bSthorpej firsti = firsti->i_alias; 18515ecc953bSthorpej firsti->i_alias = i; 18525ecc953bSthorpej } 18535ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevi, i, i_next); 18545ecc953bSthorpej ndevi++; 18555ecc953bSthorpej return (i); 18565ecc953bSthorpej } 18575ecc953bSthorpej 18585ecc953bSthorpej static const char * 18595ecc953bSthorpej concat(const char *name, int c) 18605ecc953bSthorpej { 1861c7295a4cSchristos size_t len; 18625ecc953bSthorpej char buf[NAMESIZE]; 18635ecc953bSthorpej 18645ecc953bSthorpej len = strlen(name); 18655ecc953bSthorpej if (len + 2 > sizeof(buf)) { 1866c7295a4cSchristos cfgerror("device name `%s%c' too long", name, c); 18675ecc953bSthorpej len = sizeof(buf) - 2; 18685ecc953bSthorpej } 18695ecc953bSthorpej memmove(buf, name, len); 18705ecc953bSthorpej buf[len] = c; 18715ecc953bSthorpej buf[len + 1] = 0; 18725ecc953bSthorpej return (intern(buf)); 18735ecc953bSthorpej } 18745ecc953bSthorpej 18755ecc953bSthorpej const char * 18765ecc953bSthorpej starref(const char *name) 18775ecc953bSthorpej { 18785ecc953bSthorpej 18795ecc953bSthorpej return (concat(name, '*')); 18805ecc953bSthorpej } 18815ecc953bSthorpej 18825ecc953bSthorpej const char * 18835ecc953bSthorpej wildref(const char *name) 18845ecc953bSthorpej { 18855ecc953bSthorpej 18865ecc953bSthorpej return (concat(name, '?')); 18875ecc953bSthorpej } 18885ecc953bSthorpej 18895ecc953bSthorpej /* 18905ecc953bSthorpej * Split a name like "foo0" into base name (foo) and unit number (0). 18915ecc953bSthorpej * Return 0 on success. To make this useful for names like "foo0a", 18925ecc953bSthorpej * the length of the "foo0" part is one of the arguments. 18935ecc953bSthorpej */ 18945ecc953bSthorpej static int 18955ecc953bSthorpej split(const char *name, size_t nlen, char *base, size_t bsize, int *aunit) 18965ecc953bSthorpej { 18975ecc953bSthorpej const char *cp; 1898c7295a4cSchristos int c; 1899c7295a4cSchristos size_t l; 19005ecc953bSthorpej 19015ecc953bSthorpej l = nlen; 19025ecc953bSthorpej if (l < 2 || l >= bsize || isdigit((unsigned char)*name)) 19035ecc953bSthorpej return (1); 19045ecc953bSthorpej c = (u_char)name[--l]; 19055ecc953bSthorpej if (!isdigit(c)) { 19065ecc953bSthorpej if (c == '*') 19075ecc953bSthorpej *aunit = STAR; 19085ecc953bSthorpej else if (c == '?') 19095ecc953bSthorpej *aunit = WILD; 19105ecc953bSthorpej else 19115ecc953bSthorpej return (1); 19125ecc953bSthorpej } else { 19135ecc953bSthorpej cp = &name[l]; 19145ecc953bSthorpej while (isdigit((unsigned char)cp[-1])) 19155ecc953bSthorpej l--, cp--; 19165ecc953bSthorpej *aunit = atoi(cp); 19175ecc953bSthorpej } 19185ecc953bSthorpej memmove(base, name, l); 19195ecc953bSthorpej base[l] = 0; 19205ecc953bSthorpej return (0); 19215ecc953bSthorpej } 19225ecc953bSthorpej 19235ecc953bSthorpej void 19245ecc953bSthorpej selectattr(struct attr *a) 19255ecc953bSthorpej { 19263a03bee6Suebayasi struct attrlist *al; 19273a03bee6Suebayasi struct attr *dep; 19285ecc953bSthorpej 19293a03bee6Suebayasi for (al = a->a_deps; al != NULL; al = al->al_next) { 19303a03bee6Suebayasi dep = al->al_this; 19313a03bee6Suebayasi selectattr(dep); 19323a03bee6Suebayasi } 1933c7295a4cSchristos (void)ht_insert(selecttab, a->a_name, __UNCONST(a->a_name)); 1934b599bf99Suebayasi CFGDBG(3, "attr selected `%s'", a->a_name); 19355ecc953bSthorpej } 19365ecc953bSthorpej 19375ecc953bSthorpej /* 19385ecc953bSthorpej * We have an instance of the base foo, so select it and all its 19395ecc953bSthorpej * attributes for "optional foo". 19405ecc953bSthorpej */ 19415ecc953bSthorpej static void 19425ecc953bSthorpej selectbase(struct devbase *d, struct deva *da) 19435ecc953bSthorpej { 19445ecc953bSthorpej struct attr *a; 19454caf067bSdholland struct attrlist *al; 19465ecc953bSthorpej 1947c7295a4cSchristos (void)ht_insert(selecttab, d->d_name, __UNCONST(d->d_name)); 1948b599bf99Suebayasi CFGDBG(3, "devbase selected `%s'", d->d_name); 19494caf067bSdholland for (al = d->d_attrs; al != NULL; al = al->al_next) { 19504caf067bSdholland a = al->al_this; 19515ecc953bSthorpej expandattr(a, selectattr); 19525ecc953bSthorpej } 1953da706167Suebayasi 1954da706167Suebayasi struct attr *devattr; 1955da706167Suebayasi devattr = refattr(d->d_name); 1956da706167Suebayasi expandattr(devattr, selectattr); 1957da706167Suebayasi 19585ecc953bSthorpej if (da != NULL) { 1959c7295a4cSchristos (void)ht_insert(selecttab, da->d_name, __UNCONST(da->d_name)); 1960b599bf99Suebayasi CFGDBG(3, "devattr selected `%s'", da->d_name); 19614caf067bSdholland for (al = da->d_attrs; al != NULL; al = al->al_next) { 19624caf067bSdholland a = al->al_this; 19635ecc953bSthorpej expandattr(a, selectattr); 19645ecc953bSthorpej } 19655ecc953bSthorpej } 1966c4bac1d0Suebayasi 1967c4bac1d0Suebayasi fixdev(d); 19685ecc953bSthorpej } 19695ecc953bSthorpej 19705ecc953bSthorpej /* 19715ecc953bSthorpej * Is the given pointer on the given list of pointers? 19725ecc953bSthorpej */ 197359c94545Scube int 19745ecc953bSthorpej onlist(struct nvlist *nv, void *ptr) 19755ecc953bSthorpej { 19765ecc953bSthorpej for (; nv != NULL; nv = nv->nv_next) 19775ecc953bSthorpej if (nv->nv_ptr == ptr) 19785ecc953bSthorpej return (1); 19795ecc953bSthorpej return (0); 19805ecc953bSthorpej } 19815ecc953bSthorpej 19825ecc953bSthorpej static char * 19835ecc953bSthorpej extend(char *p, const char *name) 19845ecc953bSthorpej { 1985c7295a4cSchristos size_t l; 19865ecc953bSthorpej 19875ecc953bSthorpej l = strlen(name); 19885ecc953bSthorpej memmove(p, name, l); 19895ecc953bSthorpej p += l; 19905ecc953bSthorpej *p++ = ','; 19915ecc953bSthorpej *p++ = ' '; 19925ecc953bSthorpej return (p); 19935ecc953bSthorpej } 19945ecc953bSthorpej 19955ecc953bSthorpej /* 19965ecc953bSthorpej * Check that we got all required locators, and default any that are 19975ecc953bSthorpej * given as "?" and have defaults. Return 0 on success. 19985ecc953bSthorpej */ 19995ecc953bSthorpej static const char ** 200016a8771bSdholland fixloc(const char *name, struct attr *attr, struct loclist *got) 20015ecc953bSthorpej { 200216a8771bSdholland struct loclist *m, *n; 20035ecc953bSthorpej int ord; 20045ecc953bSthorpej const char **lp; 20055ecc953bSthorpej int nmissing, nextra, nnodefault; 20065ecc953bSthorpej char *mp, *ep, *ndp; 20075ecc953bSthorpej char missing[1000], extra[1000], nodefault[1000]; 20085ecc953bSthorpej static const char *nullvec[1]; 20095ecc953bSthorpej 20105ecc953bSthorpej /* 20115ecc953bSthorpej * Look for all required locators, and number the given ones 20125ecc953bSthorpej * according to the required order. While we are numbering, 20135ecc953bSthorpej * set default values for defaulted locators. 20145ecc953bSthorpej */ 20155ecc953bSthorpej if (attr->a_loclen == 0) /* e.g., "at root" */ 20165ecc953bSthorpej lp = nullvec; 20175ecc953bSthorpej else 20185ecc953bSthorpej lp = emalloc((attr->a_loclen + 1) * sizeof(const char *)); 201916a8771bSdholland for (n = got; n != NULL; n = n->ll_next) 202016a8771bSdholland n->ll_num = -1; 20215ecc953bSthorpej nmissing = 0; 20225ecc953bSthorpej mp = missing; 20235ecc953bSthorpej /* yes, this is O(mn), but m and n should be small */ 202416a8771bSdholland for (ord = 0, m = attr->a_locs; m != NULL; m = m->ll_next, ord++) { 202516a8771bSdholland for (n = got; n != NULL; n = n->ll_next) { 202616a8771bSdholland if (n->ll_name == m->ll_name) { 202716a8771bSdholland n->ll_num = ord; 20285ecc953bSthorpej break; 20295ecc953bSthorpej } 20305ecc953bSthorpej } 203116a8771bSdholland if (n == NULL && m->ll_num == 0) { 20325ecc953bSthorpej nmissing++; 203316a8771bSdholland mp = extend(mp, m->ll_name); 20345ecc953bSthorpej } 203516a8771bSdholland lp[ord] = m->ll_string; 20365ecc953bSthorpej } 20375ecc953bSthorpej if (ord != attr->a_loclen) 20385ecc953bSthorpej panic("fixloc"); 20395ecc953bSthorpej lp[ord] = NULL; 20405ecc953bSthorpej nextra = 0; 20415ecc953bSthorpej ep = extra; 20425ecc953bSthorpej nnodefault = 0; 20435ecc953bSthorpej ndp = nodefault; 204416a8771bSdholland for (n = got; n != NULL; n = n->ll_next) { 204516a8771bSdholland if (n->ll_num >= 0) { 204616a8771bSdholland if (n->ll_string != NULL) 204716a8771bSdholland lp[n->ll_num] = n->ll_string; 204816a8771bSdholland else if (lp[n->ll_num] == NULL) { 20495ecc953bSthorpej nnodefault++; 205016a8771bSdholland ndp = extend(ndp, n->ll_name); 20515ecc953bSthorpej } 20525ecc953bSthorpej } else { 20535ecc953bSthorpej nextra++; 205416a8771bSdholland ep = extend(ep, n->ll_name); 20555ecc953bSthorpej } 20565ecc953bSthorpej } 20575ecc953bSthorpej if (nextra) { 20585ecc953bSthorpej ep[-2] = 0; /* kill ", " */ 2059c7295a4cSchristos cfgerror("%s: extraneous locator%s: %s", 20605ecc953bSthorpej name, nextra > 1 ? "s" : "", extra); 20615ecc953bSthorpej } 20625ecc953bSthorpej if (nmissing) { 20635ecc953bSthorpej mp[-2] = 0; 2064c7295a4cSchristos cfgerror("%s: must specify %s", name, missing); 20655ecc953bSthorpej } 20665ecc953bSthorpej if (nnodefault) { 20675ecc953bSthorpej ndp[-2] = 0; 2068c7295a4cSchristos cfgerror("%s: cannot wildcard %s", name, nodefault); 20695ecc953bSthorpej } 20705ecc953bSthorpej if (nmissing || nnodefault) { 20715ecc953bSthorpej free(lp); 20725ecc953bSthorpej lp = NULL; 20735ecc953bSthorpej } 20745ecc953bSthorpej return (lp); 20755ecc953bSthorpej } 2076437f8925Scube 2077437f8925Scube void 2078437f8925Scube setversion(int newver) 2079437f8925Scube { 2080437f8925Scube if (newver > CONFIG_VERSION) 2081c7295a4cSchristos cfgerror("your sources require a newer version of config(1) " 2082437f8925Scube "-- please rebuild it."); 2083437f8925Scube else if (newver < CONFIG_MINVERSION) 2084c7295a4cSchristos cfgerror("your sources are out of date -- please update."); 2085437f8925Scube else 2086437f8925Scube version = newver; 2087437f8925Scube } 2088