1*a87832feSuebayasi /* $NetBSD: sem.c,v 1.57 2014/10/11 06:18:29 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 131*a87832feSuebayasi 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 149da706167Suebayasi a = refattr(dev->d_name); 150da706167Suebayasi 151da706167Suebayasi CFGDBG(3, "merging attr `%s' in attr `%s'", name, a->a_name); 152da706167Suebayasi if (finddep(a, name) == NULL) { 153da706167Suebayasi newa = refattr(name); 154da706167Suebayasi a->a_deps = attrlist_cons(a->a_deps, newa); 155da706167Suebayasi CFGDBG(3, "attr `%s' merged to attr `%s'", newa->a_name, 156da706167Suebayasi a->a_name); 157da706167Suebayasi } 158da706167Suebayasi } 159da706167Suebayasi 160da706167Suebayasi static void 161da706167Suebayasi fixdev(struct devbase *dev) 162da706167Suebayasi { 163da706167Suebayasi struct attrlist *al; 164da706167Suebayasi struct attr *devattr, *a; 165da706167Suebayasi 166da706167Suebayasi devattr = refattr(dev->d_name); 167da706167Suebayasi if (devattr->a_devclass) 168*a87832feSuebayasi panic("%s: dev %s is devclass!", __func__, devattr->a_name); 169da706167Suebayasi 170da706167Suebayasi /* 171da706167Suebayasi * For each interface attribute this device refers to, add this 172da706167Suebayasi * device to its reference list. This makes, e.g., finding all 173da706167Suebayasi * "scsi"s easier. 174da706167Suebayasi * 175da706167Suebayasi * While looking through the attributes, set up the device 176da706167Suebayasi * class if any are devclass attributes (and error out if the 177da706167Suebayasi * device has two classes). 178da706167Suebayasi */ 179da706167Suebayasi for (al = dev->d_attrs; al != NULL; al = al->al_next) { 180da706167Suebayasi a = al->al_this; 181da706167Suebayasi if (a->a_iattr) { 182da706167Suebayasi a->a_refs = addtoattr(a->a_refs, dev); 183da706167Suebayasi } else if (a->a_devclass != NULL) { 184da706167Suebayasi if (dev->d_classattr != NULL) { 185da706167Suebayasi cfgwarn("device `%s' has multiple classes " 186da706167Suebayasi "(`%s' and `%s')", 187da706167Suebayasi dev->d_name, dev->d_classattr->a_name, 188da706167Suebayasi a->a_name); 189da706167Suebayasi } 190da706167Suebayasi dev->d_classattr = a; 191da706167Suebayasi } else { 192da706167Suebayasi if (strcmp(dev->d_name, a->a_name) != 0) { 193da706167Suebayasi mergedeps(dev, a->a_name); 194da706167Suebayasi } 195da706167Suebayasi } 196da706167Suebayasi } 197da706167Suebayasi } 198da706167Suebayasi 1995ecc953bSthorpej void 2005ecc953bSthorpej enddefs(void) 2015ecc953bSthorpej { 2025ecc953bSthorpej struct devbase *dev; 2035ecc953bSthorpej 2045ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 2055ecc953bSthorpej if (!dev->d_isdef) { 2065ecc953bSthorpej (void)fprintf(stderr, 2075ecc953bSthorpej "%s: device `%s' used but not defined\n", 2085ecc953bSthorpej lastfile, dev->d_name); 2095ecc953bSthorpej errors++; 2105ecc953bSthorpej continue; 2115ecc953bSthorpej } 212da706167Suebayasi fixdev(dev); 2135ecc953bSthorpej } 2145ecc953bSthorpej if (errors) { 2155ecc953bSthorpej (void)fprintf(stderr, "*** Stop.\n"); 2165ecc953bSthorpej exit(1); 2175ecc953bSthorpej } 2185ecc953bSthorpej } 2195ecc953bSthorpej 2205ecc953bSthorpej void 2215ecc953bSthorpej setdefmaxusers(int min, int def, int max) 2225ecc953bSthorpej { 2235ecc953bSthorpej 2245ecc953bSthorpej if (min < 1 || min > def || def > max) 225c7295a4cSchristos cfgerror("maxusers must have 1 <= min (%d) <= default (%d) " 226c7295a4cSchristos "<= max (%d)", min, def, max); 2275ecc953bSthorpej else { 2285ecc953bSthorpej minmaxusers = min; 2295ecc953bSthorpej defmaxusers = def; 2305ecc953bSthorpej maxmaxusers = max; 2315ecc953bSthorpej } 2325ecc953bSthorpej } 2335ecc953bSthorpej 2345ecc953bSthorpej void 2355ecc953bSthorpej setmaxusers(int n) 2365ecc953bSthorpej { 2375ecc953bSthorpej 238895e5687Scube if (maxusers == n) { 239c7295a4cSchristos cfgerror("duplicate maxusers parameter"); 2405ecc953bSthorpej return; 2415ecc953bSthorpej } 242895e5687Scube if (vflag && maxusers != 0) 243c7295a4cSchristos cfgwarn("warning: maxusers already defined"); 2445ecc953bSthorpej maxusers = n; 2455ecc953bSthorpej if (n < minmaxusers) { 246c7295a4cSchristos cfgerror("warning: minimum of %d maxusers assumed", 247c7295a4cSchristos minmaxusers); 2485ecc953bSthorpej errors--; /* take it away */ 2495ecc953bSthorpej maxusers = minmaxusers; 2505ecc953bSthorpej } else if (n > maxmaxusers) { 251c7295a4cSchristos cfgerror("warning: maxusers (%d) > %d", n, maxmaxusers); 2525ecc953bSthorpej errors--; 2535ecc953bSthorpej } 2545ecc953bSthorpej } 2555ecc953bSthorpej 2565ecc953bSthorpej void 2575ecc953bSthorpej setident(const char *i) 2585ecc953bSthorpej { 2595ecc953bSthorpej 2604a7be1f9Smrg if (i) 2615ecc953bSthorpej ident = intern(i); 2624a7be1f9Smrg else 2634a7be1f9Smrg ident = NULL; 2645ecc953bSthorpej } 2655ecc953bSthorpej 2665ecc953bSthorpej /* 2675ecc953bSthorpej * Define an attribute, optionally with an interface (a locator list) 2685ecc953bSthorpej * and a set of attribute-dependencies. 2695ecc953bSthorpej * 2705ecc953bSthorpej * Attribute dependencies MAY NOT be interface attributes. 2715ecc953bSthorpej * 2725ecc953bSthorpej * Since an empty locator list is logically different from "no interface", 2735ecc953bSthorpej * all locator lists include a dummy head node, which we discard here. 2745ecc953bSthorpej */ 2755ecc953bSthorpej int 276bb4307a6Suebayasi defattr0(const char *name, struct loclist *locs, struct attrlist *deps, 277bb4307a6Suebayasi int devclass) 278bb4307a6Suebayasi { 279bb4307a6Suebayasi 280bb4307a6Suebayasi if (locs != NULL) 281bb4307a6Suebayasi return defiattr(name, locs, deps, devclass); 282bb4307a6Suebayasi else if (devclass) 283bb4307a6Suebayasi return defdevclass(name, locs, deps, devclass); 284bb4307a6Suebayasi else 285bb4307a6Suebayasi return defattr(name, locs, deps, devclass); 286bb4307a6Suebayasi } 287bb4307a6Suebayasi 288bb4307a6Suebayasi int 28916a8771bSdholland defattr(const char *name, struct loclist *locs, struct attrlist *deps, 2905ecc953bSthorpej int devclass) 2915ecc953bSthorpej { 2925ecc953bSthorpej struct attr *a, *dep; 2934caf067bSdholland struct attrlist *al; 2945ecc953bSthorpej 2955ecc953bSthorpej /* 2965ecc953bSthorpej * If this attribute depends on any others, make sure none of 2975ecc953bSthorpej * the dependencies are interface attributes. 2985ecc953bSthorpej */ 2994caf067bSdholland for (al = deps; al != NULL; al = al->al_next) { 3004caf067bSdholland dep = al->al_this; 3015ecc953bSthorpej if (dep->a_iattr) { 302c7295a4cSchristos cfgerror("`%s' dependency `%s' is an interface " 303c7295a4cSchristos "attribute", name, dep->a_name); 3045ecc953bSthorpej return (1); 3055ecc953bSthorpej } 3065ecc953bSthorpej } 3075ecc953bSthorpej 308bb52c144Suebayasi if (getrefattr(name, &a)) { 309c7295a4cSchristos cfgerror("attribute `%s' already defined", name); 31016a8771bSdholland loclist_destroy(locs); 3115ecc953bSthorpej return (1); 3125ecc953bSthorpej } 313bb52c144Suebayasi if (a == NULL) 314bb52c144Suebayasi a = mkattr(name); 3155ecc953bSthorpej 316a949e288Suebayasi a->a_deps = deps; 317bb4307a6Suebayasi expandattr(a, NULL); 3182f2f3382Suebayasi CFGDBG(3, "attr `%s' defined", a->a_name); 319bb4307a6Suebayasi 320bb4307a6Suebayasi return (0); 321bb4307a6Suebayasi } 322a949e288Suebayasi 3232f2f3382Suebayasi struct attr * 3242f2f3382Suebayasi mkattr(const char *name) 3252f2f3382Suebayasi { 3262f2f3382Suebayasi struct attr *a; 3272f2f3382Suebayasi 3282f2f3382Suebayasi a = ecalloc(1, sizeof *a); 3292f2f3382Suebayasi if (ht_insert(attrtab, name, a)) { 3302f2f3382Suebayasi free(a); 3312f2f3382Suebayasi return NULL; 3322f2f3382Suebayasi } 3332f2f3382Suebayasi a->a_name = name; 3342f2f3382Suebayasi TAILQ_INIT(&a->a_files); 3352f2f3382Suebayasi CFGDBG(3, "attr `%s' allocated", name); 3362f2f3382Suebayasi 3372f2f3382Suebayasi return a; 3382f2f3382Suebayasi } 3392f2f3382Suebayasi 340a949e288Suebayasi /* "interface attribute" initialization */ 341bb4307a6Suebayasi int 342bb4307a6Suebayasi defiattr(const char *name, struct loclist *locs, struct attrlist *deps, 343bb4307a6Suebayasi int devclass) 344bb4307a6Suebayasi { 345bb4307a6Suebayasi struct attr *a; 346bb4307a6Suebayasi int len; 347bb4307a6Suebayasi struct loclist *ll; 348bb4307a6Suebayasi 349bb4307a6Suebayasi if (devclass) 350bb4307a6Suebayasi panic("defattr(%s): locators and devclass", name); 351bb4307a6Suebayasi 352bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 353bb4307a6Suebayasi return (1); 354bb4307a6Suebayasi 355bb4307a6Suebayasi a = getattr(name); 3565ecc953bSthorpej a->a_iattr = 1; 35716a8771bSdholland /* unwrap */ 35816a8771bSdholland a->a_locs = locs->ll_next; 35916a8771bSdholland locs->ll_next = NULL; 36016a8771bSdholland loclist_destroy(locs); 361a949e288Suebayasi len = 0; 362a949e288Suebayasi for (ll = a->a_locs; ll != NULL; ll = ll->ll_next) 363a949e288Suebayasi len++; 364a949e288Suebayasi a->a_loclen = len; 365bb4307a6Suebayasi if (deps) 366bb4307a6Suebayasi CFGDBG(2, "attr `%s' iface with deps", a->a_name); 367bb4307a6Suebayasi return (0); 3685ecc953bSthorpej } 369a949e288Suebayasi 370a949e288Suebayasi /* "device class" initialization */ 371bb4307a6Suebayasi int 372bb4307a6Suebayasi defdevclass(const char *name, struct loclist *locs, struct attrlist *deps, 373bb4307a6Suebayasi int devclass) 374bb4307a6Suebayasi { 375bb4307a6Suebayasi struct attr *a; 376bbfbbde1Schristos char classenum[256], *cp; 3775ecc953bSthorpej int errored = 0; 3785ecc953bSthorpej 379bb4307a6Suebayasi if (deps) 380bb4307a6Suebayasi panic("defattr(%s): dependencies and devclass", name); 381bb4307a6Suebayasi 382bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 383bb4307a6Suebayasi return (1); 384bb4307a6Suebayasi 385bb4307a6Suebayasi a = getattr(name); 386bbfbbde1Schristos (void)snprintf(classenum, sizeof(classenum), "DV_%s", name); 3875ecc953bSthorpej for (cp = classenum + 3; *cp; cp++) { 3885ecc953bSthorpej if (!errored && 3895ecc953bSthorpej (!isalnum((unsigned char)*cp) || 3905ecc953bSthorpej (isalpha((unsigned char)*cp) && !islower((unsigned char)*cp)))) { 391c7295a4cSchristos cfgerror("device class names must be " 392c7295a4cSchristos "lower-case alphanumeric characters"); 3935ecc953bSthorpej errored = 1; 3945ecc953bSthorpej } 3955ecc953bSthorpej *cp = toupper((unsigned char)*cp); 3965ecc953bSthorpej } 3975ecc953bSthorpej a->a_devclass = intern(classenum); 3985ecc953bSthorpej 3995ecc953bSthorpej return (0); 4005ecc953bSthorpej } 4015ecc953bSthorpej 4025ecc953bSthorpej /* 4035ecc953bSthorpej * Return true if the given `error object' is embedded in the given 4045ecc953bSthorpej * pointer list. 4055ecc953bSthorpej */ 4065ecc953bSthorpej static int 4074caf067bSdholland has_errobj(struct attrlist *al, struct attr *obj) 4085ecc953bSthorpej { 4095ecc953bSthorpej 4104caf067bSdholland for (; al != NULL; al = al->al_next) 4114caf067bSdholland if (al->al_this == obj) 4125ecc953bSthorpej return (1); 4135ecc953bSthorpej return (0); 4145ecc953bSthorpej } 4155ecc953bSthorpej 4165ecc953bSthorpej /* 4175ecc953bSthorpej * Return true if the given attribute is embedded in the given 4185ecc953bSthorpej * pointer list. 4195ecc953bSthorpej */ 4205ecc953bSthorpej int 4214caf067bSdholland has_attr(struct attrlist *al, const char *attr) 4225ecc953bSthorpej { 4235ecc953bSthorpej struct attr *a; 4245ecc953bSthorpej 4255ecc953bSthorpej if ((a = getattr(attr)) == NULL) 4265ecc953bSthorpej return (0); 4275ecc953bSthorpej 4284caf067bSdholland for (; al != NULL; al = al->al_next) 4294caf067bSdholland if (al->al_this == a) 4305ecc953bSthorpej return (1); 4315ecc953bSthorpej return (0); 4325ecc953bSthorpej } 4335ecc953bSthorpej 4345ecc953bSthorpej /* 4355ecc953bSthorpej * Add a device base to a list in an attribute (actually, to any list). 4365ecc953bSthorpej * Note that this does not check for duplicates, and does reverse the 4375ecc953bSthorpej * list order, but no one cares anyway. 4385ecc953bSthorpej */ 4395ecc953bSthorpej static struct nvlist * 4405ecc953bSthorpej addtoattr(struct nvlist *l, struct devbase *dev) 4415ecc953bSthorpej { 4425ecc953bSthorpej struct nvlist *n; 4435ecc953bSthorpej 4445ecc953bSthorpej n = newnv(NULL, NULL, dev, 0, l); 4455ecc953bSthorpej return (n); 4465ecc953bSthorpej } 4475ecc953bSthorpej 4485ecc953bSthorpej /* 4495ecc953bSthorpej * Define a device. This may (or may not) also define an interface 4505ecc953bSthorpej * attribute and/or refer to existing attributes. 4515ecc953bSthorpej */ 4525ecc953bSthorpej void 45316a8771bSdholland defdev(struct devbase *dev, struct loclist *loclist, struct attrlist *attrs, 4545ecc953bSthorpej int ispseudo) 4555ecc953bSthorpej { 45616a8771bSdholland struct loclist *ll; 4574caf067bSdholland struct attrlist *al; 4585ecc953bSthorpej 4595ecc953bSthorpej if (dev == &errdev) 4605ecc953bSthorpej goto bad; 4615ecc953bSthorpej if (dev->d_isdef) { 462c7295a4cSchristos cfgerror("redefinition of `%s'", dev->d_name); 4635ecc953bSthorpej goto bad; 4645ecc953bSthorpej } 4655ecc953bSthorpej 4665ecc953bSthorpej dev->d_isdef = 1; 4675ecc953bSthorpej if (has_errobj(attrs, &errattr)) 4685ecc953bSthorpej goto bad; 4695ecc953bSthorpej 4705ecc953bSthorpej /* 4715ecc953bSthorpej * Handle implicit attribute definition from locator list. Do 4725ecc953bSthorpej * this before scanning the `at' list so that we can have, e.g.: 4735ecc953bSthorpej * device foo at other, foo { slot = -1 } 4745ecc953bSthorpej * (where you can plug in a foo-bus extender to a foo-bus). 4755ecc953bSthorpej */ 4765ecc953bSthorpej if (loclist != NULL) { 47716a8771bSdholland ll = loclist; 4785ecc953bSthorpej loclist = NULL; /* defattr disposes of them for us */ 479bb4307a6Suebayasi if (defiattr(dev->d_name, ll, NULL, 0)) 4805ecc953bSthorpej goto bad; 4814caf067bSdholland attrs = attrlist_cons(attrs, getattr(dev->d_name)); 4824caf067bSdholland /* This used to be stored but was never used */ 4834caf067bSdholland /* attrs->al_name = dev->d_name; */ 484c454f920Scube } 485c454f920Scube 486c130d400Scube /* 487c130d400Scube * Pseudo-devices can have children. Consider them as 488c130d400Scube * attaching at root. 489c130d400Scube */ 490c454f920Scube if (ispseudo) { 4914caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) 4924caf067bSdholland if (al->al_this->a_iattr) 493c454f920Scube break; 4944caf067bSdholland if (al != NULL) { 495b66156c7Sdrochner if (ispseudo < 2) { 496b66156c7Sdrochner if (version >= 20080610) 497b66156c7Sdrochner cfgerror("interface attribute on " 498b66156c7Sdrochner "non-device pseudo `%s'", dev->d_name); 499b66156c7Sdrochner else { 500b66156c7Sdrochner ispseudo = 2; 501b66156c7Sdrochner } 502b66156c7Sdrochner } 503c130d400Scube ht_insert(devroottab, dev->d_name, dev); 5045ecc953bSthorpej } 505b66156c7Sdrochner } 5065ecc953bSthorpej 5075ecc953bSthorpej /* Committed! Set up fields. */ 5085ecc953bSthorpej dev->d_ispseudo = ispseudo; 5095ecc953bSthorpej dev->d_attrs = attrs; 5105ecc953bSthorpej dev->d_classattr = NULL; /* for now */ 511da706167Suebayasi CFGDBG(3, "dev `%s' defined", dev->d_name); 5125ecc953bSthorpej 5135ecc953bSthorpej /* 514a2dd9676Suebayasi * Implicit attribute definition for device. 515a2dd9676Suebayasi */ 516a2dd9676Suebayasi refattr(dev->d_name); 517a2dd9676Suebayasi 518a2dd9676Suebayasi /* 5195ecc953bSthorpej * For each interface attribute this device refers to, add this 5205ecc953bSthorpej * device to its reference list. This makes, e.g., finding all 5215ecc953bSthorpej * "scsi"s easier. 5225ecc953bSthorpej * 5235ecc953bSthorpej * While looking through the attributes, set up the device 5245ecc953bSthorpej * class if any are devclass attributes (and error out if the 5255ecc953bSthorpej * device has two classes). 5265ecc953bSthorpej */ 5274caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 528da706167Suebayasi /* 529da706167Suebayasi * Implicit attribute definition for device dependencies. 530da706167Suebayasi */ 531da706167Suebayasi refattr(dev->d_name); 5325ecc953bSthorpej } 5335ecc953bSthorpej return; 5345ecc953bSthorpej bad: 53516a8771bSdholland loclist_destroy(loclist); 5364caf067bSdholland attrlist_destroyall(attrs); 5375ecc953bSthorpej } 5385ecc953bSthorpej 5395ecc953bSthorpej /* 5405ecc953bSthorpej * Look up a devbase. Also makes sure it is a reasonable name, 5415ecc953bSthorpej * i.e., does not end in a digit or contain special characters. 5425ecc953bSthorpej */ 5435ecc953bSthorpej struct devbase * 5445ecc953bSthorpej getdevbase(const char *name) 5455ecc953bSthorpej { 546c7295a4cSchristos const u_char *p; 5475ecc953bSthorpej struct devbase *dev; 5485ecc953bSthorpej 549c7295a4cSchristos p = (const u_char *)name; 5505ecc953bSthorpej if (!isalpha(*p)) 5515ecc953bSthorpej goto badname; 5525ecc953bSthorpej while (*++p) { 5535ecc953bSthorpej if (!isalnum(*p) && *p != '_') 5545ecc953bSthorpej goto badname; 5555ecc953bSthorpej } 5565ecc953bSthorpej if (isdigit(*--p)) { 5575ecc953bSthorpej badname: 558c7295a4cSchristos cfgerror("bad device base name `%s'", name); 5595ecc953bSthorpej return (&errdev); 5605ecc953bSthorpej } 5615ecc953bSthorpej dev = ht_lookup(devbasetab, name); 5625ecc953bSthorpej if (dev == NULL) { 5635ecc953bSthorpej dev = ecalloc(1, sizeof *dev); 5645ecc953bSthorpej dev->d_name = name; 5655ecc953bSthorpej dev->d_isdef = 0; 566d767912bSdrochner dev->d_major = NODEVMAJOR; 5675ecc953bSthorpej dev->d_attrs = NULL; 5685ecc953bSthorpej dev->d_ihead = NULL; 5695ecc953bSthorpej dev->d_ipp = &dev->d_ihead; 5705ecc953bSthorpej dev->d_ahead = NULL; 5715ecc953bSthorpej dev->d_app = &dev->d_ahead; 5725ecc953bSthorpej dev->d_umax = 0; 5735ecc953bSthorpej TAILQ_INSERT_TAIL(&allbases, dev, d_next); 5745ecc953bSthorpej if (ht_insert(devbasetab, name, dev)) 5755ecc953bSthorpej panic("getdevbase(%s)", name); 576da706167Suebayasi CFGDBG(3, "devbase defined `%s'", dev->d_name); 5775ecc953bSthorpej } 5785ecc953bSthorpej return (dev); 5795ecc953bSthorpej } 5805ecc953bSthorpej 5815ecc953bSthorpej /* 5825ecc953bSthorpej * Define some of a device's allowable parent attachments. 5835ecc953bSthorpej * There may be a list of (plain) attributes. 5845ecc953bSthorpej */ 5855ecc953bSthorpej void 5865ecc953bSthorpej defdevattach(struct deva *deva, struct devbase *dev, struct nvlist *atlist, 5874caf067bSdholland struct attrlist *attrs) 5885ecc953bSthorpej { 5895ecc953bSthorpej struct nvlist *nv; 5904caf067bSdholland struct attrlist *al; 5915ecc953bSthorpej struct attr *a; 5925ecc953bSthorpej struct deva *da; 5935ecc953bSthorpej 5945ecc953bSthorpej if (dev == &errdev) 5955ecc953bSthorpej goto bad; 5965ecc953bSthorpej if (deva == NULL) 5975ecc953bSthorpej deva = getdevattach(dev->d_name); 5985ecc953bSthorpej if (deva == &errdeva) 5995ecc953bSthorpej goto bad; 6005ecc953bSthorpej if (!dev->d_isdef) { 601c7295a4cSchristos cfgerror("attaching undefined device `%s'", dev->d_name); 6025ecc953bSthorpej goto bad; 6035ecc953bSthorpej } 6045ecc953bSthorpej if (deva->d_isdef) { 605c7295a4cSchristos cfgerror("redefinition of `%s'", deva->d_name); 6065ecc953bSthorpej goto bad; 6075ecc953bSthorpej } 6085ecc953bSthorpej if (dev->d_ispseudo) { 609c7295a4cSchristos cfgerror("pseudo-devices can't attach"); 6105ecc953bSthorpej goto bad; 6115ecc953bSthorpej } 6125ecc953bSthorpej 6135ecc953bSthorpej deva->d_isdef = 1; 6145ecc953bSthorpej if (has_errobj(attrs, &errattr)) 6155ecc953bSthorpej goto bad; 6164caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 6174caf067bSdholland a = al->al_this; 6185ecc953bSthorpej if (a == &errattr) 6195ecc953bSthorpej continue; /* already complained */ 6205ecc953bSthorpej if (a->a_iattr || a->a_devclass != NULL) 621c7295a4cSchristos cfgerror("`%s' is not a plain attribute", a->a_name); 6225ecc953bSthorpej } 6235ecc953bSthorpej 6245ecc953bSthorpej /* Committed! Set up fields. */ 6255ecc953bSthorpej deva->d_attrs = attrs; 6265ecc953bSthorpej deva->d_atlist = atlist; 6275ecc953bSthorpej deva->d_devbase = dev; 6282f2f3382Suebayasi CFGDBG(3, "deva `%s' defined", deva->d_name); 6292f2f3382Suebayasi 6302f2f3382Suebayasi /* 631a5a68b71Suebayasi * Implicit attribute definition for device attachment. 6322f2f3382Suebayasi */ 6332f2f3382Suebayasi refattr(deva->d_name); 6345ecc953bSthorpej 6355ecc953bSthorpej /* 6365ecc953bSthorpej * Turn the `at' list into interface attributes (map each 6375ecc953bSthorpej * nv_name to an attribute, or to NULL for root), and add 6385ecc953bSthorpej * this device to those attributes, so that children can 6395ecc953bSthorpej * be listed at this particular device if they are supported 6405ecc953bSthorpej * by that attribute. 6415ecc953bSthorpej */ 6425ecc953bSthorpej for (nv = atlist; nv != NULL; nv = nv->nv_next) { 6435ecc953bSthorpej if (nv->nv_name == NULL) 6445ecc953bSthorpej nv->nv_ptr = a = NULL; /* at root */ 6455ecc953bSthorpej else 6465ecc953bSthorpej nv->nv_ptr = a = getattr(nv->nv_name); 6475ecc953bSthorpej if (a == &errattr) 6485ecc953bSthorpej continue; /* already complained */ 6495ecc953bSthorpej 6505ecc953bSthorpej /* 6515ecc953bSthorpej * Make sure that an attachment spec doesn't 6525ecc953bSthorpej * already say how to attach to this attribute. 6535ecc953bSthorpej */ 6545ecc953bSthorpej for (da = dev->d_ahead; da != NULL; da = da->d_bsame) 6555ecc953bSthorpej if (onlist(da->d_atlist, a)) 656c7295a4cSchristos cfgerror("attach at `%s' already done by `%s'", 6575ecc953bSthorpej a ? a->a_name : "root", da->d_name); 6585ecc953bSthorpej 659c130d400Scube if (a == NULL) { 660c130d400Scube ht_insert(devroottab, dev->d_name, dev); 6615ecc953bSthorpej continue; /* at root; don't add */ 662c130d400Scube } 6635ecc953bSthorpej if (!a->a_iattr) 664c7295a4cSchristos cfgerror("%s cannot be at plain attribute `%s'", 6655ecc953bSthorpej dev->d_name, a->a_name); 6665ecc953bSthorpej else 6675ecc953bSthorpej a->a_devs = addtoattr(a->a_devs, dev); 6685ecc953bSthorpej } 6695ecc953bSthorpej 6705ecc953bSthorpej /* attach to parent */ 6715ecc953bSthorpej *dev->d_app = deva; 6725ecc953bSthorpej dev->d_app = &deva->d_bsame; 6735ecc953bSthorpej return; 6745ecc953bSthorpej bad: 6755ecc953bSthorpej nvfreel(atlist); 6764caf067bSdholland attrlist_destroyall(attrs); 6775ecc953bSthorpej } 6785ecc953bSthorpej 6795ecc953bSthorpej /* 6805ecc953bSthorpej * Look up a device attachment. Also makes sure it is a reasonable 6815ecc953bSthorpej * name, i.e., does not contain digits or special characters. 6825ecc953bSthorpej */ 6835ecc953bSthorpej struct deva * 6845ecc953bSthorpej getdevattach(const char *name) 6855ecc953bSthorpej { 686c7295a4cSchristos const u_char *p; 6875ecc953bSthorpej struct deva *deva; 6885ecc953bSthorpej 689c7295a4cSchristos p = (const u_char *)name; 6905ecc953bSthorpej if (!isalpha(*p)) 6915ecc953bSthorpej goto badname; 6925ecc953bSthorpej while (*++p) { 6935ecc953bSthorpej if (!isalnum(*p) && *p != '_') 6945ecc953bSthorpej goto badname; 6955ecc953bSthorpej } 6965ecc953bSthorpej if (isdigit(*--p)) { 6975ecc953bSthorpej badname: 698c7295a4cSchristos cfgerror("bad device attachment name `%s'", name); 6995ecc953bSthorpej return (&errdeva); 7005ecc953bSthorpej } 7015ecc953bSthorpej deva = ht_lookup(devatab, name); 7025ecc953bSthorpej if (deva == NULL) { 7035ecc953bSthorpej deva = ecalloc(1, sizeof *deva); 7045ecc953bSthorpej deva->d_name = name; 7055ecc953bSthorpej deva->d_bsame = NULL; 7065ecc953bSthorpej deva->d_isdef = 0; 7075ecc953bSthorpej deva->d_devbase = NULL; 7085ecc953bSthorpej deva->d_atlist = NULL; 7095ecc953bSthorpej deva->d_attrs = NULL; 7105ecc953bSthorpej deva->d_ihead = NULL; 7115ecc953bSthorpej deva->d_ipp = &deva->d_ihead; 7125ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevas, deva, d_next); 7135ecc953bSthorpej if (ht_insert(devatab, name, deva)) 7145ecc953bSthorpej panic("getdeva(%s)", name); 7155ecc953bSthorpej } 7165ecc953bSthorpej return (deva); 7175ecc953bSthorpej } 7185ecc953bSthorpej 7195ecc953bSthorpej /* 7205ecc953bSthorpej * Look up an attribute. 7215ecc953bSthorpej */ 7225ecc953bSthorpej struct attr * 7235ecc953bSthorpej getattr(const char *name) 7245ecc953bSthorpej { 7255ecc953bSthorpej struct attr *a; 7265ecc953bSthorpej 7275ecc953bSthorpej if ((a = ht_lookup(attrtab, name)) == NULL) { 728c7295a4cSchristos cfgerror("undefined attribute `%s'", name); 7295ecc953bSthorpej a = &errattr; 7305ecc953bSthorpej } 7315ecc953bSthorpej return (a); 7325ecc953bSthorpej } 7335ecc953bSthorpej 7345ecc953bSthorpej /* 7352f2f3382Suebayasi * Implicit attribute definition. 7362f2f3382Suebayasi */ 73751deed3eSuebayasi struct attr * 7382f2f3382Suebayasi refattr(const char *name) 7392f2f3382Suebayasi { 74051deed3eSuebayasi struct attr *a; 7412f2f3382Suebayasi 74251deed3eSuebayasi if ((a = ht_lookup(attrtab, name)) == NULL) 74351deed3eSuebayasi a = mkattr(name); 74451deed3eSuebayasi return a; 7452f2f3382Suebayasi } 7462f2f3382Suebayasi 747bb52c144Suebayasi int 748bb52c144Suebayasi getrefattr(const char *name, struct attr **ra) 749bb52c144Suebayasi { 750bb52c144Suebayasi struct attr *a; 751bb52c144Suebayasi 752bb52c144Suebayasi a = ht_lookup(attrtab, name); 753bb52c144Suebayasi if (a == NULL) { 754bb52c144Suebayasi *ra = NULL; 755bb52c144Suebayasi return (0); 756bb52c144Suebayasi } 757bb52c144Suebayasi /* 758bb52c144Suebayasi * Check if the existing attr is only referenced, not really defined. 759bb52c144Suebayasi */ 760bb52c144Suebayasi if (a->a_deps == NULL && 761bb52c144Suebayasi a->a_iattr == 0 && 762bb52c144Suebayasi a->a_devclass == 0) { 763bb52c144Suebayasi *ra = a; 764bb52c144Suebayasi return (0); 765bb52c144Suebayasi } 766bb52c144Suebayasi return (1); 767bb52c144Suebayasi } 768bb52c144Suebayasi 7692f2f3382Suebayasi /* 7705ecc953bSthorpej * Recursively expand an attribute and its dependencies, checking for 7715ecc953bSthorpej * cycles, and invoking a callback for each attribute found. 7725ecc953bSthorpej */ 7735ecc953bSthorpej void 7745ecc953bSthorpej expandattr(struct attr *a, void (*callback)(struct attr *)) 7755ecc953bSthorpej { 7764caf067bSdholland struct attrlist *al; 7775ecc953bSthorpej struct attr *dep; 7785ecc953bSthorpej 7795ecc953bSthorpej if (a->a_expanding) { 780c7295a4cSchristos cfgerror("circular dependency on attribute `%s'", a->a_name); 7815ecc953bSthorpej return; 7825ecc953bSthorpej } 7835ecc953bSthorpej 7845ecc953bSthorpej a->a_expanding = 1; 7855ecc953bSthorpej 7865ecc953bSthorpej /* First expand all of this attribute's dependencies. */ 7874caf067bSdholland for (al = a->a_deps; al != NULL; al = al->al_next) { 7884caf067bSdholland dep = al->al_this; 7895ecc953bSthorpej expandattr(dep, callback); 7905ecc953bSthorpej } 7915ecc953bSthorpej 7925ecc953bSthorpej /* ...and now invoke the callback for ourself. */ 7935ecc953bSthorpej if (callback != NULL) 7945ecc953bSthorpej (*callback)(a); 7955ecc953bSthorpej 7965ecc953bSthorpej a->a_expanding = 0; 7975ecc953bSthorpej } 7985ecc953bSthorpej 7995ecc953bSthorpej /* 8005ecc953bSthorpej * Set the major device number for a device, so that it can be used 8015ecc953bSthorpej * as a root/dumps "on" device in a configuration. 8025ecc953bSthorpej */ 8035ecc953bSthorpej void 804d767912bSdrochner setmajor(struct devbase *d, devmajor_t n) 8055ecc953bSthorpej { 8065ecc953bSthorpej 807d767912bSdrochner if (d != &errdev && d->d_major != NODEVMAJOR) 808d767912bSdrochner cfgerror("device `%s' is already major %d", 809d767912bSdrochner d->d_name, d->d_major); 8105ecc953bSthorpej else 8115ecc953bSthorpej d->d_major = n; 8125ecc953bSthorpej } 8135ecc953bSthorpej 8145ecc953bSthorpej const char * 815d767912bSdrochner major2name(devmajor_t maj) 8165ecc953bSthorpej { 8175ecc953bSthorpej struct devbase *dev; 8185ecc953bSthorpej struct devm *dm; 8195ecc953bSthorpej 8205ecc953bSthorpej if (!do_devsw) { 8215ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 8225ecc953bSthorpej if (dev->d_major == maj) 8235ecc953bSthorpej return (dev->d_name); 8245ecc953bSthorpej } 8255ecc953bSthorpej } else { 8265ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 8275ecc953bSthorpej if (dm->dm_bmajor == maj) 8285ecc953bSthorpej return (dm->dm_name); 8295ecc953bSthorpej } 8305ecc953bSthorpej } 8315ecc953bSthorpej return (NULL); 8325ecc953bSthorpej } 8335ecc953bSthorpej 834d767912bSdrochner devmajor_t 8355ecc953bSthorpej dev2major(struct devbase *dev) 8365ecc953bSthorpej { 8375ecc953bSthorpej struct devm *dm; 8385ecc953bSthorpej 8395ecc953bSthorpej if (!do_devsw) 8405ecc953bSthorpej return (dev->d_major); 8415ecc953bSthorpej 8425ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 8435ecc953bSthorpej if (strcmp(dm->dm_name, dev->d_name) == 0) 8445ecc953bSthorpej return (dm->dm_bmajor); 8455ecc953bSthorpej } 846d767912bSdrochner return (NODEVMAJOR); 8475ecc953bSthorpej } 8485ecc953bSthorpej 8495ecc953bSthorpej /* 8505ecc953bSthorpej * Make a string description of the device at maj/min. 8515ecc953bSthorpej */ 8525ecc953bSthorpej static const char * 853d767912bSdrochner makedevstr(devmajor_t maj, devminor_t min) 8545ecc953bSthorpej { 855c7295a4cSchristos const char *devicename; 8565ecc953bSthorpej char buf[32]; 8575ecc953bSthorpej 858c7295a4cSchristos devicename = major2name(maj); 859c7295a4cSchristos if (devicename == NULL) 860d767912bSdrochner (void)snprintf(buf, sizeof(buf), "<%d/%d>", maj, min); 8615ecc953bSthorpej else 862d767912bSdrochner (void)snprintf(buf, sizeof(buf), "%s%d%c", devicename, 863d767912bSdrochner min / maxpartitions, (min % maxpartitions) + 'a'); 8645ecc953bSthorpej 8655ecc953bSthorpej return (intern(buf)); 8665ecc953bSthorpej } 8675ecc953bSthorpej 8685ecc953bSthorpej /* 8695ecc953bSthorpej * Map things like "ra0b" => makedev(major("ra"), 0*maxpartitions + 'b'-'a'). 8705ecc953bSthorpej * Handle the case where the device number is given but there is no 8715ecc953bSthorpej * corresponding name, and map NULL to the default. 8725ecc953bSthorpej */ 8735ecc953bSthorpej static int 8745ecc953bSthorpej resolve(struct nvlist **nvp, const char *name, const char *what, 8755ecc953bSthorpej struct nvlist *dflt, int part) 8765ecc953bSthorpej { 8775ecc953bSthorpej struct nvlist *nv; 8785ecc953bSthorpej struct devbase *dev; 8795ecc953bSthorpej const char *cp; 880d767912bSdrochner devmajor_t maj; 881d767912bSdrochner devminor_t min; 8820001b928Schristos int i, l; 8835ecc953bSthorpej int unit; 8845ecc953bSthorpej char buf[NAMESIZE]; 8855ecc953bSthorpej 8865cc303e1Slukem if ((part -= 'a') >= maxpartitions || part < 0) 8875ecc953bSthorpej panic("resolve"); 8885ecc953bSthorpej if ((nv = *nvp) == NULL) { 8895ecc953bSthorpej dev_t d = NODEV; 8905ecc953bSthorpej /* 8915ecc953bSthorpej * Apply default. Easiest to do this by number. 8925ecc953bSthorpej * Make sure to retain NODEVness, if this is dflt's disposition. 8935ecc953bSthorpej */ 8945cc303e1Slukem if ((dev_t)dflt->nv_num != NODEV) { 8950001b928Schristos maj = major(dflt->nv_num); 8960001b928Schristos min = ((minor(dflt->nv_num) / maxpartitions) * 8975ecc953bSthorpej maxpartitions) + part; 8985ecc953bSthorpej d = makedev(maj, min); 8995ecc953bSthorpej cp = makedevstr(maj, min); 9005ecc953bSthorpej } else 9015ecc953bSthorpej cp = NULL; 9025ecc953bSthorpej *nvp = nv = newnv(NULL, cp, NULL, d, NULL); 9035ecc953bSthorpej } 9045cc303e1Slukem if ((dev_t)nv->nv_num != NODEV) { 9055ecc953bSthorpej /* 9065ecc953bSthorpej * By the numbers. Find the appropriate major number 9075ecc953bSthorpej * to make a name. 9085ecc953bSthorpej */ 9090001b928Schristos maj = major(nv->nv_num); 9100001b928Schristos min = minor(nv->nv_num); 9115ecc953bSthorpej nv->nv_str = makedevstr(maj, min); 9125ecc953bSthorpej return (0); 9135ecc953bSthorpej } 9145ecc953bSthorpej 9155ecc953bSthorpej if (nv->nv_str == NULL || nv->nv_str == s_qmark) 9165ecc953bSthorpej /* 9175ecc953bSthorpej * Wildcarded or unspecified; leave it as NODEV. 9185ecc953bSthorpej */ 9195ecc953bSthorpej return (0); 9205ecc953bSthorpej 9215ecc953bSthorpej /* 9225ecc953bSthorpej * The normal case: things like "ra2b". Check for partition 9235ecc953bSthorpej * suffix, remove it if there, and split into name ("ra") and 9245ecc953bSthorpej * unit (2). 9255ecc953bSthorpej */ 9265ecc953bSthorpej l = i = strlen(nv->nv_str); 9275ecc953bSthorpej cp = &nv->nv_str[l]; 9285ecc953bSthorpej if (l > 1 && *--cp >= 'a' && *cp < 'a' + maxpartitions && 9295ecc953bSthorpej isdigit((unsigned char)cp[-1])) { 9305ecc953bSthorpej l--; 9315ecc953bSthorpej part = *cp - 'a'; 9325ecc953bSthorpej } 9335ecc953bSthorpej cp = nv->nv_str; 9345ecc953bSthorpej if (split(cp, l, buf, sizeof buf, &unit)) { 935c7295a4cSchristos cfgerror("%s: invalid %s device name `%s'", name, what, cp); 9365ecc953bSthorpej return (1); 9375ecc953bSthorpej } 9385ecc953bSthorpej dev = ht_lookup(devbasetab, intern(buf)); 9395ecc953bSthorpej if (dev == NULL) { 940c7295a4cSchristos cfgerror("%s: device `%s' does not exist", name, buf); 9415ecc953bSthorpej return (1); 9425ecc953bSthorpej } 9435ecc953bSthorpej 9445ecc953bSthorpej /* 9455ecc953bSthorpej * Check for the magic network interface attribute, and 9465ecc953bSthorpej * don't bother making a device number. 9475ecc953bSthorpej */ 9485ecc953bSthorpej if (has_attr(dev->d_attrs, s_ifnet)) { 9490001b928Schristos nv->nv_num = NODEV; 9505ecc953bSthorpej nv->nv_ifunit = unit; /* XXX XXX XXX */ 9515ecc953bSthorpej } else { 9525ecc953bSthorpej maj = dev2major(dev); 9535cc303e1Slukem if (maj == NODEVMAJOR) { 954c7295a4cSchristos cfgerror("%s: can't make %s device from `%s'", 9555ecc953bSthorpej name, what, nv->nv_str); 9565ecc953bSthorpej return (1); 9575ecc953bSthorpej } 9580001b928Schristos nv->nv_num = makedev(maj, unit * maxpartitions + part); 9595ecc953bSthorpej } 9605ecc953bSthorpej 9615ecc953bSthorpej nv->nv_name = dev->d_name; 9625ecc953bSthorpej return (0); 9635ecc953bSthorpej } 9645ecc953bSthorpej 9655ecc953bSthorpej /* 9665ecc953bSthorpej * Add a completed configuration to the list. 9675ecc953bSthorpej */ 9685ecc953bSthorpej void 9695ecc953bSthorpej addconf(struct config *cf0) 9705ecc953bSthorpej { 9715ecc953bSthorpej struct config *cf; 9725ecc953bSthorpej const char *name; 9735ecc953bSthorpej 9745ecc953bSthorpej name = cf0->cf_name; 9755ecc953bSthorpej cf = ecalloc(1, sizeof *cf); 9765ecc953bSthorpej if (ht_insert(cfhashtab, name, cf)) { 977c7295a4cSchristos cfgerror("configuration `%s' already defined", name); 9785ecc953bSthorpej free(cf); 9795ecc953bSthorpej goto bad; 9805ecc953bSthorpej } 9815ecc953bSthorpej *cf = *cf0; 9825ecc953bSthorpej 9835ecc953bSthorpej /* 9845ecc953bSthorpej * Resolve the root device. 9855ecc953bSthorpej */ 986cd429362Serh if (cf->cf_root == NULL) { 987c7295a4cSchristos cfgerror("%s: no root device specified", name); 9885ecc953bSthorpej goto bad; 9895ecc953bSthorpej } 990cd429362Serh if (cf->cf_root && cf->cf_root->nv_str != s_qmark) { 991cd429362Serh struct nvlist *nv; 992cd429362Serh nv = cf->cf_root; 9935ecc953bSthorpej if (resolve(&cf->cf_root, name, "root", nv, 'a')) 9945ecc953bSthorpej goto bad; 9955ecc953bSthorpej } 9965ecc953bSthorpej 9975ecc953bSthorpej /* 9985ecc953bSthorpej * Resolve the dump device. 9995ecc953bSthorpej */ 10005ecc953bSthorpej if (cf->cf_dump == NULL || cf->cf_dump->nv_str == s_qmark) { 10015ecc953bSthorpej /* 10025ecc953bSthorpej * Wildcarded dump device is equivalent to unspecified. 10035ecc953bSthorpej */ 10045ecc953bSthorpej cf->cf_dump = NULL; 10055ecc953bSthorpej } else if (cf->cf_dump->nv_str == s_none) { 10065ecc953bSthorpej /* 10075ecc953bSthorpej * Operator has requested that no dump device should be 10085ecc953bSthorpej * configured; do nothing. 10095ecc953bSthorpej */ 10105ecc953bSthorpej } else { 10115ecc953bSthorpej if (resolve(&cf->cf_dump, name, "dumps", cf->cf_dump, 'b')) 10125ecc953bSthorpej goto bad; 10135ecc953bSthorpej } 10145ecc953bSthorpej 10155ecc953bSthorpej /* Wildcarded fstype is `unspecified'. */ 10165ecc953bSthorpej if (cf->cf_fstype == s_qmark) 10175ecc953bSthorpej cf->cf_fstype = NULL; 10185ecc953bSthorpej 10195ecc953bSthorpej TAILQ_INSERT_TAIL(&allcf, cf, cf_next); 10205ecc953bSthorpej return; 10215ecc953bSthorpej bad: 10225ecc953bSthorpej nvfreel(cf0->cf_root); 10235ecc953bSthorpej nvfreel(cf0->cf_dump); 10245ecc953bSthorpej } 10255ecc953bSthorpej 10265ecc953bSthorpej void 10275ecc953bSthorpej setconf(struct nvlist **npp, const char *what, struct nvlist *v) 10285ecc953bSthorpej { 10295ecc953bSthorpej 10305ecc953bSthorpej if (*npp != NULL) { 1031c7295a4cSchristos cfgerror("duplicate %s specification", what); 10325ecc953bSthorpej nvfreel(v); 10335ecc953bSthorpej } else 10345ecc953bSthorpej *npp = v; 10355ecc953bSthorpej } 10365ecc953bSthorpej 10375ecc953bSthorpej void 103842b52b8aScube delconf(const char *name) 103942b52b8aScube { 104042b52b8aScube struct config *cf; 104142b52b8aScube 104242b52b8aScube if (ht_lookup(cfhashtab, name) == NULL) { 1043c7295a4cSchristos cfgerror("configuration `%s' undefined", name); 104442b52b8aScube return; 104542b52b8aScube } 104642b52b8aScube (void)ht_remove(cfhashtab, name); 104742b52b8aScube 104842b52b8aScube TAILQ_FOREACH(cf, &allcf, cf_next) 104942b52b8aScube if (!strcmp(cf->cf_name, name)) 105042b52b8aScube break; 105142b52b8aScube if (cf == NULL) 105242b52b8aScube panic("lost configuration `%s'", name); 105342b52b8aScube 105442b52b8aScube TAILQ_REMOVE(&allcf, cf, cf_next); 105542b52b8aScube } 105642b52b8aScube 105742b52b8aScube void 10585ecc953bSthorpej setfstype(const char **fstp, const char *v) 10595ecc953bSthorpej { 10605ecc953bSthorpej 10615ecc953bSthorpej if (*fstp != NULL) { 1062c7295a4cSchristos cfgerror("multiple fstype specifications"); 10635ecc953bSthorpej return; 10645ecc953bSthorpej } 10655ecc953bSthorpej 10665ecc953bSthorpej if (v != s_qmark && OPT_FSOPT(v)) { 1067c7295a4cSchristos cfgerror("\"%s\" is not a configured file system", v); 10685ecc953bSthorpej return; 10695ecc953bSthorpej } 10705ecc953bSthorpej 10715ecc953bSthorpej *fstp = v; 10725ecc953bSthorpej } 10735ecc953bSthorpej 10745ecc953bSthorpej static struct devi * 10755ecc953bSthorpej newdevi(const char *name, int unit, struct devbase *d) 10765ecc953bSthorpej { 10775ecc953bSthorpej struct devi *i; 10785ecc953bSthorpej 10795ecc953bSthorpej i = ecalloc(1, sizeof *i); 10805ecc953bSthorpej i->i_name = name; 10815ecc953bSthorpej i->i_unit = unit; 10825ecc953bSthorpej i->i_base = d; 10835ecc953bSthorpej i->i_bsame = NULL; 10845ecc953bSthorpej i->i_asame = NULL; 10855ecc953bSthorpej i->i_alias = NULL; 10865ecc953bSthorpej i->i_at = NULL; 10875ecc953bSthorpej i->i_pspec = NULL; 10885ecc953bSthorpej i->i_atdeva = NULL; 10895ecc953bSthorpej i->i_locs = NULL; 10905ecc953bSthorpej i->i_cfflags = 0; 10915ecc953bSthorpej i->i_lineno = currentline(); 10920dbd1c0eScube i->i_srcfile = yyfile; 10937aa6070dScube i->i_active = DEVI_ORPHAN; /* Proper analysis comes later */ 1094a31ff6b4Scube i->i_level = devilevel; 109590ac64deSpooka i->i_pseudoroot = 0; 10965ecc953bSthorpej if (unit >= d->d_umax) 10975ecc953bSthorpej d->d_umax = unit + 1; 10985ecc953bSthorpej return (i); 10995ecc953bSthorpej } 11005ecc953bSthorpej 11015ecc953bSthorpej /* 11025ecc953bSthorpej * Add the named device as attaching to the named attribute (or perhaps 11035ecc953bSthorpej * another device instead) plus unit number. 11045ecc953bSthorpej */ 11055ecc953bSthorpej void 110616a8771bSdholland adddev(const char *name, const char *at, struct loclist *loclist, int flags) 11075ecc953bSthorpej { 11085ecc953bSthorpej struct devi *i; /* the new instance */ 11095ecc953bSthorpej struct pspec *p; /* and its pspec */ 11105ecc953bSthorpej struct attr *attr; /* attribute that allows attach */ 11115ecc953bSthorpej struct devbase *ib; /* i->i_base */ 11125ecc953bSthorpej struct devbase *ab; /* not NULL => at another dev */ 11134caf067bSdholland struct attrlist *al; 11145ecc953bSthorpej struct deva *iba; /* devbase attachment used */ 11155ecc953bSthorpej const char *cp; 11165ecc953bSthorpej int atunit; 11175ecc953bSthorpej char atbuf[NAMESIZE]; 11185ecc953bSthorpej int hit; 11195ecc953bSthorpej 11205ecc953bSthorpej ab = NULL; 11215ecc953bSthorpej iba = NULL; 11225ecc953bSthorpej if (at == NULL) { 11235ecc953bSthorpej /* "at root" */ 11245ecc953bSthorpej p = NULL; 11255ecc953bSthorpej if ((i = getdevi(name)) == NULL) 11265ecc953bSthorpej goto bad; 11275ecc953bSthorpej /* 11285ecc953bSthorpej * Must warn about i_unit > 0 later, after taking care of 11295ecc953bSthorpej * the STAR cases (we could do non-star's here but why 11305ecc953bSthorpej * bother?). Make sure this device can be at root. 11315ecc953bSthorpej */ 11325ecc953bSthorpej ib = i->i_base; 11335ecc953bSthorpej hit = 0; 11345ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 11355ecc953bSthorpej if (onlist(iba->d_atlist, NULL)) { 11365ecc953bSthorpej hit = 1; 11375ecc953bSthorpej break; 11385ecc953bSthorpej } 11395ecc953bSthorpej if (!hit) { 1140c7295a4cSchristos cfgerror("`%s' cannot attach to the root", ib->d_name); 11415ec393e9Scube i->i_active = DEVI_BROKEN; 11425ecc953bSthorpej goto bad; 11435ecc953bSthorpej } 11445ecc953bSthorpej attr = &errattr; /* a convenient "empty" attr */ 11455ecc953bSthorpej } else { 11465ecc953bSthorpej if (split(at, strlen(at), atbuf, sizeof atbuf, &atunit)) { 1147c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 11485ecc953bSthorpej /* (void)getdevi(name); -- ??? */ 11495ecc953bSthorpej goto bad; 11505ecc953bSthorpej } 11515ecc953bSthorpej if ((i = getdevi(name)) == NULL) 11525ecc953bSthorpej goto bad; 11535ecc953bSthorpej ib = i->i_base; 11545ecc953bSthorpej 11555ecc953bSthorpej /* 11565ecc953bSthorpej * Devices can attach to two types of things: Attributes, 11575ecc953bSthorpej * and other devices (which have the appropriate attributes 11585ecc953bSthorpej * to allow attachment). 11595ecc953bSthorpej * 11605ecc953bSthorpej * (1) If we're attached to an attribute, then we don't need 11615ecc953bSthorpej * look at the parent base device to see what attributes 11625ecc953bSthorpej * it has, and make sure that we can attach to them. 11635ecc953bSthorpej * 11645ecc953bSthorpej * (2) If we're attached to a real device (i.e. named in 11655ecc953bSthorpej * the config file), we want to remember that so that 11665ecc953bSthorpej * at cross-check time, if the device we're attached to 11675ecc953bSthorpej * is missing but other devices which also provide the 11685ecc953bSthorpej * attribute are present, we don't get a false "OK." 11695ecc953bSthorpej * 11705ecc953bSthorpej * (3) If the thing we're attached to is an attribute 11715ecc953bSthorpej * but is actually named in the config file, we still 11725ecc953bSthorpej * have to remember its devbase. 11735ecc953bSthorpej */ 11745ecc953bSthorpej cp = intern(atbuf); 11755ecc953bSthorpej 11765ecc953bSthorpej /* Figure out parent's devbase, to satisfy case (3). */ 11775ecc953bSthorpej ab = ht_lookup(devbasetab, cp); 11785ecc953bSthorpej 11795ecc953bSthorpej /* Find out if it's an attribute. */ 11805ecc953bSthorpej attr = ht_lookup(attrtab, cp); 11815ecc953bSthorpej 11825ecc953bSthorpej /* Make sure we're _really_ attached to the attr. Case (1). */ 11835ecc953bSthorpej if (attr != NULL && onlist(attr->a_devs, ib)) 11845ecc953bSthorpej goto findattachment; 11855ecc953bSthorpej 11865ecc953bSthorpej /* 11875ecc953bSthorpej * Else a real device, and not just an attribute. Case (2). 11885ecc953bSthorpej * 11895ecc953bSthorpej * Have to work a bit harder to see whether we have 11905ecc953bSthorpej * something like "tg0 at esp0" (where esp is merely 11915ecc953bSthorpej * not an attribute) or "tg0 at nonesuch0" (where 11925ecc953bSthorpej * nonesuch is not even a device). 11935ecc953bSthorpej */ 11945ecc953bSthorpej if (ab == NULL) { 1195c7295a4cSchristos cfgerror("%s at %s: `%s' unknown", 11965ecc953bSthorpej name, at, atbuf); 11975ec393e9Scube i->i_active = DEVI_BROKEN; 11985ecc953bSthorpej goto bad; 11995ecc953bSthorpej } 12005ecc953bSthorpej 12015ecc953bSthorpej /* 12025ecc953bSthorpej * See if the named parent carries an attribute 12035ecc953bSthorpej * that allows it to supervise device ib. 12045ecc953bSthorpej */ 12054caf067bSdholland for (al = ab->d_attrs; al != NULL; al = al->al_next) { 12064caf067bSdholland attr = al->al_this; 12075ecc953bSthorpej if (onlist(attr->a_devs, ib)) 12085ecc953bSthorpej goto findattachment; 12095ecc953bSthorpej } 1210c7295a4cSchristos cfgerror("`%s' cannot attach to `%s'", ib->d_name, atbuf); 12115ec393e9Scube i->i_active = DEVI_BROKEN; 12125ecc953bSthorpej goto bad; 12135ecc953bSthorpej 12145ecc953bSthorpej findattachment: 12155ecc953bSthorpej /* 12165ecc953bSthorpej * Find the parent spec. If a matching one has not yet been 12175ecc953bSthorpej * created, create one. 12185ecc953bSthorpej */ 12195ecc953bSthorpej p = getpspec(attr, ab, atunit); 12205ecc953bSthorpej p->p_devs = newnv(NULL, NULL, i, 0, p->p_devs); 12215ecc953bSthorpej 12225ecc953bSthorpej /* find out which attachment it uses */ 12235ecc953bSthorpej hit = 0; 12245ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 12255ecc953bSthorpej if (onlist(iba->d_atlist, attr)) { 12265ecc953bSthorpej hit = 1; 12275ecc953bSthorpej break; 12285ecc953bSthorpej } 12295ecc953bSthorpej if (!hit) 12305ecc953bSthorpej panic("adddev: can't figure out attachment"); 12315ecc953bSthorpej } 12325ec393e9Scube if ((i->i_locs = fixloc(name, attr, loclist)) == NULL) { 12335ec393e9Scube i->i_active = DEVI_BROKEN; 12345ecc953bSthorpej goto bad; 12355ec393e9Scube } 12365ecc953bSthorpej i->i_at = at; 12375ecc953bSthorpej i->i_pspec = p; 12385ecc953bSthorpej i->i_atdeva = iba; 12395ecc953bSthorpej i->i_cfflags = flags; 12405ecc953bSthorpej 12415ecc953bSthorpej *iba->d_ipp = i; 12425ecc953bSthorpej iba->d_ipp = &i->i_asame; 12435ecc953bSthorpej 12445ecc953bSthorpej /* all done, fall into ... */ 12455ecc953bSthorpej bad: 124616a8771bSdholland loclist_destroy(loclist); 12475ecc953bSthorpej return; 12485ecc953bSthorpej } 12495ecc953bSthorpej 12505ecc953bSthorpej void 12517b7c582aScube deldevi(const char *name, const char *at) 12525ecc953bSthorpej { 12537b7c582aScube struct devi *firsti, *i; 12545ecc953bSthorpej struct devbase *d; 12555ecc953bSthorpej int unit; 12565ecc953bSthorpej char base[NAMESIZE]; 12575ecc953bSthorpej 12585ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1259c7295a4cSchristos cfgerror("invalid device name `%s'", name); 12605ecc953bSthorpej return; 12615ecc953bSthorpej } 12625ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 12635ecc953bSthorpej if (d == NULL) { 1264c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 12655ecc953bSthorpej return; 12665ecc953bSthorpej } 12675ecc953bSthorpej if (d->d_ispseudo) { 1268c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 12695ecc953bSthorpej return; 12705ecc953bSthorpej } 12715ecc953bSthorpej if ((firsti = ht_lookup(devitab, name)) == NULL) { 1272c7295a4cSchristos cfgerror("`%s' not defined", name); 12735ecc953bSthorpej return; 12745ecc953bSthorpej } 12757b7c582aScube if (at == NULL && firsti->i_at == NULL) { 1276e499d8b5Scube /* 'at root' */ 12777b7c582aScube remove_devi(firsti); 12787b7c582aScube return; 12797b7c582aScube } else if (at != NULL) 12807b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 1281bfc250f2Scube if (i->i_active != DEVI_BROKEN && 1282bfc250f2Scube strcmp(at, i->i_at) == 0) { 12837b7c582aScube remove_devi(i); 12845ecc953bSthorpej return; 12855ecc953bSthorpej } 1286c7295a4cSchristos cfgerror("`%s' at `%s' not found", name, at ? at : "root"); 1287e499d8b5Scube } 12885ecc953bSthorpej 12897b7c582aScube static void 12907b7c582aScube remove_devi(struct devi *i) 12917b7c582aScube { 12927b7c582aScube struct devbase *d = i->i_base; 12937b7c582aScube struct devi *f, *j, **ppi; 12947b7c582aScube struct deva *iba; 12957b7c582aScube 12967b7c582aScube f = ht_lookup(devitab, i->i_name); 12976a6299ebScube if (f == NULL) 12986a6299ebScube panic("remove_devi(): instance %s disappeared from devitab", 12996a6299ebScube i->i_name); 13007b7c582aScube 1301bfc250f2Scube if (i->i_active == DEVI_BROKEN) { 1302bfc250f2Scube cfgerror("not removing broken instance `%s'", i->i_name); 1303bfc250f2Scube return; 1304bfc250f2Scube } 1305bfc250f2Scube 1306e499d8b5Scube /* 1307e499d8b5Scube * We have the device instance, i. 1308e499d8b5Scube * We have to: 1309e499d8b5Scube * - delete the alias 1310e499d8b5Scube * 1311e499d8b5Scube * If the devi was an alias of an already listed devi, all is 1312e499d8b5Scube * good we don't have to do more. 1313e499d8b5Scube * If it was the first alias, we have to replace i's entry in 1314e499d8b5Scube * d's list by its first alias. 1315e499d8b5Scube * If it was the only entry, we must remove i's entry from d's 1316e499d8b5Scube * list. 1317e499d8b5Scube */ 13187b7c582aScube if (i != f) { 13197b7c582aScube for (j = f; j->i_alias != i; j = j->i_alias); 13207b7c582aScube j->i_alias = i->i_alias; 13213b405775Scube } else { 13223b405775Scube if (i->i_alias == NULL) { 1323e499d8b5Scube /* No alias, must unlink the entry from devitab */ 13247b7c582aScube ht_remove(devitab, i->i_name); 13257b7c582aScube j = i->i_bsame; 13263b405775Scube } else { 1327e499d8b5Scube /* Or have the first alias replace i in d's list */ 1328e499d8b5Scube i->i_alias->i_bsame = i->i_bsame; 13297b7c582aScube j = i->i_alias; 13307b7c582aScube if (i == f) 13317b7c582aScube ht_replace(devitab, i->i_name, i->i_alias); 13323b405775Scube } 13333b405775Scube 1334e499d8b5Scube /* 1335e499d8b5Scube * - remove/replace the instance from the devbase's list 1336e499d8b5Scube * 1337e499d8b5Scube * A double-linked list would make this much easier. Oh, well, 1338e499d8b5Scube * what is done is done. 1339e499d8b5Scube */ 1340e499d8b5Scube for (ppi = &d->d_ihead; 1341e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_bsame != i; 1342e499d8b5Scube ppi = &(*ppi)->i_bsame); 1343e499d8b5Scube if (*ppi == NULL) 1344c3414672Scube panic("deldev: dev (%s) doesn't list the devi" 1345c3414672Scube " (%s at %s)", d->d_name, i->i_name, i->i_at); 13467b7c582aScube f = *ppi; 13477b7c582aScube if (f == i) 1348c3414672Scube /* That implies d->d_ihead == i */ 13497b7c582aScube *ppi = j; 1350e499d8b5Scube else 13517b7c582aScube (*ppi)->i_bsame = j; 1352e499d8b5Scube if (d->d_ipp == &i->i_bsame) { 13533b405775Scube if (i->i_alias == NULL) { 13547b7c582aScube if (f == i) 1355e499d8b5Scube d->d_ipp = &d->d_ihead; 1356e499d8b5Scube else 13577b7c582aScube d->d_ipp = &f->i_bsame; 13583b405775Scube } else 13593b405775Scube d->d_ipp = &i->i_alias->i_bsame; 1360e499d8b5Scube } 1361e499d8b5Scube } 1362e499d8b5Scube /* 1363e499d8b5Scube * - delete the attachment instance 1364e499d8b5Scube */ 1365e499d8b5Scube iba = i->i_atdeva; 1366e499d8b5Scube for (ppi = &iba->d_ihead; 1367e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_asame != i; 1368e499d8b5Scube ppi = &(*ppi)->i_asame); 1369e499d8b5Scube if (*ppi == NULL) 1370e499d8b5Scube panic("deldev: deva (%s) doesn't list the devi (%s)", 1371e499d8b5Scube iba->d_name, i->i_name); 13727b7c582aScube f = *ppi; 13737b7c582aScube if (f == i) 1374c3414672Scube /* That implies iba->d_ihead == i */ 1375e499d8b5Scube *ppi = i->i_asame; 1376e499d8b5Scube else 1377e499d8b5Scube (*ppi)->i_asame = i->i_asame; 1378e499d8b5Scube if (iba->d_ipp == &i->i_asame) { 13797b7c582aScube if (f == i) 1380e499d8b5Scube iba->d_ipp = &iba->d_ihead; 1381e499d8b5Scube else 13827b7c582aScube iba->d_ipp = &f->i_asame; 1383e499d8b5Scube } 1384e499d8b5Scube /* 1385e499d8b5Scube * - delete the pspec 1386e499d8b5Scube */ 1387e499d8b5Scube if (i->i_pspec) { 1388e499d8b5Scube struct pspec *p = i->i_pspec; 1389e499d8b5Scube struct nvlist *nv, *onv; 1390e499d8b5Scube 1391e499d8b5Scube /* Double-linked nvlist anyone? */ 1392c0024066Scube for (nv = p->p_devs; nv->nv_next != NULL; nv = nv->nv_next) { 1393e499d8b5Scube if (nv->nv_next && nv->nv_next->nv_ptr == i) { 1394e499d8b5Scube onv = nv->nv_next; 1395e499d8b5Scube nv->nv_next = onv->nv_next; 1396e499d8b5Scube nvfree(onv); 1397e499d8b5Scube break; 1398c0024066Scube } 1399c0024066Scube if (nv->nv_ptr == i) { 1400e499d8b5Scube /* nv is p->p_devs in that case */ 1401e499d8b5Scube p->p_devs = nv->nv_next; 1402e499d8b5Scube nvfree(nv); 1403e499d8b5Scube break; 1404e499d8b5Scube } 1405e499d8b5Scube } 1406e499d8b5Scube if (p->p_devs == NULL) 1407e499d8b5Scube TAILQ_REMOVE(&allpspecs, p, p_list); 1408e499d8b5Scube } 1409e499d8b5Scube /* 1410e499d8b5Scube * - delete the alldevi entry 1411e499d8b5Scube */ 1412e499d8b5Scube TAILQ_REMOVE(&alldevi, i, i_next); 1413e499d8b5Scube ndevi--; 14147aa6070dScube /* 14157aa6070dScube * Put it in deaddevitab 1416a31ff6b4Scube * 1417a31ff6b4Scube * Each time a devi is removed, devilevel is increased so that later on 1418a31ff6b4Scube * it is possible to tell if an instance was added before or after the 1419a31ff6b4Scube * removal of its parent. 1420a31ff6b4Scube * 1421a31ff6b4Scube * For active instances, i_level contains the number of devi removed so 1422a31ff6b4Scube * far, and for dead devis, it contains its index. 14237aa6070dScube */ 1424a31ff6b4Scube i->i_level = devilevel++; 14257aa6070dScube i->i_alias = NULL; 14267aa6070dScube f = ht_lookup(deaddevitab, i->i_name); 14277aa6070dScube if (f == NULL) { 14287aa6070dScube if (ht_insert(deaddevitab, i->i_name, i)) 14297aa6070dScube panic("remove_devi(%s) - can't add to deaddevitab", 14307aa6070dScube i->i_name); 14317aa6070dScube } else { 14327aa6070dScube for (j = f; j->i_alias != NULL; j = j->i_alias); 14337aa6070dScube j->i_alias = i; 14347aa6070dScube } 1435e499d8b5Scube /* 14365d1e8b27Swiz * - reconstruct d->d_umax 1437e499d8b5Scube */ 1438e499d8b5Scube d->d_umax = 0; 1439e499d8b5Scube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 1440e499d8b5Scube if (i->i_unit >= d->d_umax) 1441e499d8b5Scube d->d_umax = i->i_unit + 1; 14425ecc953bSthorpej } 14435ecc953bSthorpej 14445ecc953bSthorpej void 14457b7c582aScube deldeva(const char *at) 14467b7c582aScube { 14477b7c582aScube int unit; 14487b7c582aScube const char *cp; 14497b7c582aScube struct devbase *d, *ad; 14507b7c582aScube struct devi *i, *j; 14517b7c582aScube struct attr *a; 14527b7c582aScube struct pspec *p; 14537b7c582aScube struct nvlist *nv, *stack = NULL; 14547b7c582aScube 14557b7c582aScube if (at == NULL) { 14567b7c582aScube TAILQ_FOREACH(i, &alldevi, i_next) 14577b7c582aScube if (i->i_at == NULL) 14587b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 14597b7c582aScube } else { 14607b7c582aScube int l; 14617b7c582aScube 14627b7c582aScube l = strlen(at) - 1; 14637b7c582aScube if (at[l] == '?' || isdigit((unsigned char)at[l])) { 14647b7c582aScube char base[NAMESIZE]; 14657b7c582aScube 14667b7c582aScube if (split(at, l+1, base, sizeof base, &unit)) { 1467c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 14687b7c582aScube return; 14697b7c582aScube } 14707b7c582aScube cp = intern(base); 14717b7c582aScube } else { 14727b7c582aScube cp = intern(at); 14737b7c582aScube unit = STAR; 14747b7c582aScube } 14757b7c582aScube 14767b7c582aScube ad = ht_lookup(devbasetab, cp); 14777b7c582aScube a = ht_lookup(attrtab, cp); 14787b7c582aScube if (a == NULL) { 1479c7295a4cSchristos cfgerror("unknown attachment attribute or device `%s'", 14807b7c582aScube cp); 14817b7c582aScube return; 14827b7c582aScube } 14837b7c582aScube if (!a->a_iattr) { 1484c7295a4cSchristos cfgerror("plain attribute `%s' cannot have children", 14857b7c582aScube a->a_name); 14867b7c582aScube return; 14877b7c582aScube } 14887b7c582aScube 14897b7c582aScube /* 14907b7c582aScube * remove_devi() makes changes to the devbase's list and the 14917b7c582aScube * alias list, * so the actual deletion of the instances must 14927b7c582aScube * be delayed. 14937b7c582aScube */ 14947b7c582aScube for (nv = a->a_devs; nv != NULL; nv = nv->nv_next) { 14957b7c582aScube d = nv->nv_ptr; 14967b7c582aScube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 14977b7c582aScube for (j = i; j != NULL; j = j->i_alias) { 14987b7c582aScube /* Ignore devices at root */ 14997b7c582aScube if (j->i_at == NULL) 15007b7c582aScube continue; 15017b7c582aScube p = j->i_pspec; 15027b7c582aScube /* 15037b7c582aScube * There are three cases: 15047b7c582aScube * 15057b7c582aScube * 1. unit is not STAR. Consider 'at' 15067b7c582aScube * to be explicit, even if it 15077b7c582aScube * references an interface 15087b7c582aScube * attribute. 15097b7c582aScube * 15107b7c582aScube * 2. unit is STAR and 'at' references 15117b7c582aScube * a real device. Look for pspec 15127b7c582aScube * that have a matching p_atdev 15137b7c582aScube * field. 15147b7c582aScube * 15157b7c582aScube * 3. unit is STAR and 'at' references 15167b7c582aScube * an interface attribute. Look 15177b7c582aScube * for pspec that have a matching 15187b7c582aScube * p_iattr field. 15197b7c582aScube */ 15207b7c582aScube if ((unit != STAR && /* Case */ 15217b7c582aScube !strcmp(j->i_at, at)) || /* 1 */ 15227b7c582aScube (unit == STAR && 15237b7c582aScube ((ad != NULL && /* Case */ 15247b7c582aScube p->p_atdev == ad) || /* 2 */ 15257b7c582aScube (ad == NULL && /* Case */ 15267b7c582aScube p->p_iattr == a)))) /* 3 */ 15277b7c582aScube stack = newnv(NULL, NULL, j, 0, 15287b7c582aScube stack); 15297b7c582aScube } 15307b7c582aScube } 15317b7c582aScube } 15327b7c582aScube 15337b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 15347b7c582aScube remove_devi(nv->nv_ptr); 1535e50e4ee4Scube nvfreel(stack); 15367b7c582aScube } 15377b7c582aScube 15387b7c582aScube void 15397b7c582aScube deldev(const char *name) 15407b7c582aScube { 15417b7c582aScube int l; 15427b7c582aScube struct devi *firsti, *i; 15437b7c582aScube struct nvlist *nv, *stack = NULL; 15447b7c582aScube 15457b7c582aScube l = strlen(name) - 1; 15467b7c582aScube if (name[l] == '*' || isdigit((unsigned char)name[l])) { 15477b7c582aScube /* `no mydev0' or `no mydev*' */ 15487b7c582aScube firsti = ht_lookup(devitab, name); 15497b7c582aScube if (firsti == NULL) { 1550c7295a4cSchristos cfgerror("unknown instance %s", name); 15517b7c582aScube return; 15527b7c582aScube } 15537b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 15547b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 15557b7c582aScube } else { 15567b7c582aScube struct devbase *d = ht_lookup(devbasetab, name); 15577b7c582aScube 15587b7c582aScube if (d == NULL) { 1559c7295a4cSchristos cfgerror("unknown device %s", name); 15607b7c582aScube return; 15617b7c582aScube } 156271af9028Scube if (d->d_ispseudo) { 1563c7295a4cSchristos cfgerror("%s is a pseudo-device; " 156471af9028Scube "use \"no pseudo-device %s\" instead", name, 156571af9028Scube name); 156671af9028Scube return; 156771af9028Scube } 15687b7c582aScube 15697b7c582aScube for (firsti = d->d_ihead; firsti != NULL; 15707b7c582aScube firsti = firsti->i_bsame) 15717b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 15727b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 15737b7c582aScube } 15747b7c582aScube 15757b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 15767b7c582aScube remove_devi(nv->nv_ptr); 1577e50e4ee4Scube nvfreel(stack); 15787b7c582aScube } 15797b7c582aScube 158000ed8a38Spooka /* 158100ed8a38Spooka * Insert given device "name" into devroottab. In case "name" 158200ed8a38Spooka * designates a pure interface attribute, create a fake device 158300ed8a38Spooka * instance for the attribute and insert that into the roottab 158400ed8a38Spooka * (this scheme avoids mucking around with the orphanage analysis). 158500ed8a38Spooka */ 15867b7c582aScube void 158790ac64deSpooka addpseudoroot(const char *name) 158890ac64deSpooka { 1589194e1c80Spooka char buf[NAMESIZE]; 1590194e1c80Spooka int unit; 1591194e1c80Spooka struct attr *attr; 159290ac64deSpooka struct devi *i; 159390ac64deSpooka struct deva *iba; 159490ac64deSpooka struct devbase *ib; 159590ac64deSpooka 1596194e1c80Spooka if (split(name, strlen(name), buf, sizeof(buf), &unit)) { 1597194e1c80Spooka cfgerror("invalid pseudo-root name `%s'", name); 1598194e1c80Spooka return; 1599194e1c80Spooka } 1600194e1c80Spooka 1601194e1c80Spooka /* 160200ed8a38Spooka * Prefer device because devices with locators define an 160300ed8a38Spooka * implicit interface attribute. However, if a device is 160400ed8a38Spooka * not available, try to attach to the interface attribute. 160500ed8a38Spooka * This makes sure adddev() doesn't get confused when we 160600ed8a38Spooka * are really attaching to a device (alternatively we maybe 160700ed8a38Spooka * could specify a non-NULL atlist to defdevattach() below). 1608194e1c80Spooka */ 160900ed8a38Spooka ib = ht_lookup(devbasetab, intern(buf)); 161000ed8a38Spooka if (ib == NULL) { 1611194e1c80Spooka struct devbase *fakedev; 1612194e1c80Spooka char fakename[NAMESIZE]; 1613194e1c80Spooka 161400ed8a38Spooka attr = ht_lookup(attrtab, intern(buf)); 161500ed8a38Spooka if (!(attr && attr->a_iattr)) { 161600ed8a38Spooka cfgerror("pseudo-root `%s' not available", name); 161700ed8a38Spooka return; 161800ed8a38Spooka } 161900ed8a38Spooka 1620194e1c80Spooka /* 1621194e1c80Spooka * here we cheat a bit: create a fake devbase with the 1622194e1c80Spooka * interface attribute and instantiate it. quick, cheap, 1623194e1c80Spooka * dirty & bad for you, much like the stuff in the fridge. 1624194e1c80Spooka * and, it works, since the pseudoroot device is not included 1625194e1c80Spooka * in ioconf, just used by config to make sure we start from 1626194e1c80Spooka * the right place. 1627194e1c80Spooka */ 162800ed8a38Spooka snprintf(fakename, sizeof(fakename), "%s_devattrs", buf); 1629194e1c80Spooka fakedev = getdevbase(intern(fakename)); 1630194e1c80Spooka fakedev->d_isdef = 1; 1631194e1c80Spooka fakedev->d_ispseudo = 0; 16324caf067bSdholland fakedev->d_attrs = attrlist_cons(NULL, attr); 1633194e1c80Spooka defdevattach(NULL, fakedev, NULL, NULL); 1634194e1c80Spooka 1635194e1c80Spooka if (unit == STAR) 1636194e1c80Spooka snprintf(buf, sizeof(buf), "%s*", fakename); 1637194e1c80Spooka else 1638194e1c80Spooka snprintf(buf, sizeof(buf), "%s%d", fakename, unit); 1639194e1c80Spooka name = buf; 1640194e1c80Spooka } 1641194e1c80Spooka 1642194e1c80Spooka /* ok, everything should be set up, so instantiate a fake device */ 164390ac64deSpooka i = getdevi(name); 164490ac64deSpooka if (i == NULL) 164500ed8a38Spooka panic("device `%s' expected to be present", name); 164690ac64deSpooka ib = i->i_base; 1647194e1c80Spooka iba = ib->d_ahead; 164890ac64deSpooka 164990ac64deSpooka i->i_atdeva = iba; 165090ac64deSpooka i->i_cfflags = 0; 165190ac64deSpooka i->i_locs = fixloc(name, &errattr, NULL); 165290ac64deSpooka i->i_pseudoroot = 1; 165390ac64deSpooka i->i_active = DEVI_ORPHAN; /* set active by kill_orphans() */ 165490ac64deSpooka 165590ac64deSpooka *iba->d_ipp = i; 165690ac64deSpooka iba->d_ipp = &i->i_asame; 165790ac64deSpooka 165890ac64deSpooka ht_insert(devroottab, ib->d_name, ib); 165990ac64deSpooka } 166090ac64deSpooka 166190ac64deSpooka void 16625ecc953bSthorpej addpseudo(const char *name, int number) 16635ecc953bSthorpej { 16645ecc953bSthorpej struct devbase *d; 16655ecc953bSthorpej struct devi *i; 16665ecc953bSthorpej 16675ecc953bSthorpej d = ht_lookup(devbasetab, name); 16685ecc953bSthorpej if (d == NULL) { 1669c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16705ecc953bSthorpej return; 16715ecc953bSthorpej } 16725ecc953bSthorpej if (!d->d_ispseudo) { 1673c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 16745ecc953bSthorpej return; 16755ecc953bSthorpej } 16765ecc953bSthorpej if (ht_lookup(devitab, name) != NULL) { 1677c7295a4cSchristos cfgerror("`%s' already defined", name); 16785ecc953bSthorpej return; 16795ecc953bSthorpej } 16805ecc953bSthorpej i = newdevi(name, number - 1, d); /* foo 16 => "foo0..foo15" */ 16815ecc953bSthorpej if (ht_insert(devitab, name, i)) 16825ecc953bSthorpej panic("addpseudo(%s)", name); 16837b7c582aScube /* Useful to retrieve the instance from the devbase */ 16847b7c582aScube d->d_ihead = i; 16857aa6070dScube i->i_active = DEVI_ACTIVE; 16865ecc953bSthorpej TAILQ_INSERT_TAIL(&allpseudo, i, i_next); 16875ecc953bSthorpej } 16885ecc953bSthorpej 16895ecc953bSthorpej void 16905ecc953bSthorpej delpseudo(const char *name) 16915ecc953bSthorpej { 16925ecc953bSthorpej struct devbase *d; 16935ecc953bSthorpej struct devi *i; 16945ecc953bSthorpej 16955ecc953bSthorpej d = ht_lookup(devbasetab, name); 16965ecc953bSthorpej if (d == NULL) { 1697c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16985ecc953bSthorpej return; 16995ecc953bSthorpej } 17005ecc953bSthorpej if (!d->d_ispseudo) { 1701c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 17025ecc953bSthorpej return; 17035ecc953bSthorpej } 17045ecc953bSthorpej if ((i = ht_lookup(devitab, name)) == NULL) { 1705c7295a4cSchristos cfgerror("`%s' not defined", name); 17065ecc953bSthorpej return; 17075ecc953bSthorpej } 17085ecc953bSthorpej d->d_umax = 0; /* clear neads-count entries */ 17097aa6070dScube d->d_ihead = NULL; /* make sure it won't be considered active */ 17105ecc953bSthorpej TAILQ_REMOVE(&allpseudo, i, i_next); 17115ecc953bSthorpej if (ht_remove(devitab, name)) 17125ecc953bSthorpej panic("delpseudo(%s) - can't remove from devitab", name); 17137aa6070dScube if (ht_insert(deaddevitab, name, i)) 17147aa6070dScube panic("delpseudo(%s) - can't add to deaddevitab", name); 17155ecc953bSthorpej } 17165ecc953bSthorpej 17175ecc953bSthorpej void 1718d767912bSdrochner adddevm(const char *name, devmajor_t cmajor, devmajor_t bmajor, 17199483bda7Sdholland struct condexpr *cond, struct nvlist *nv_nodes) 17205ecc953bSthorpej { 17215ecc953bSthorpej struct devm *dm; 17225ecc953bSthorpej 1723d767912bSdrochner if (cmajor != NODEVMAJOR && (cmajor < 0 || cmajor >= 4096)) { 1724c7295a4cSchristos cfgerror("character major %d is invalid", cmajor); 17259483bda7Sdholland condexpr_destroy(cond); 17263da3ab25Spooka nvfreel(nv_nodes); 17275ecc953bSthorpej return; 17285ecc953bSthorpej } 17295ecc953bSthorpej 1730d767912bSdrochner if (bmajor != NODEVMAJOR && (bmajor < 0 || bmajor >= 4096)) { 1731c7295a4cSchristos cfgerror("block major %d is invalid", bmajor); 17329483bda7Sdholland condexpr_destroy(cond); 17333da3ab25Spooka nvfreel(nv_nodes); 17345ecc953bSthorpej return; 17355ecc953bSthorpej } 1736d767912bSdrochner if (cmajor == NODEVMAJOR && bmajor == NODEVMAJOR) { 1737c7295a4cSchristos cfgerror("both character/block majors are not specified"); 17389483bda7Sdholland condexpr_destroy(cond); 17393da3ab25Spooka nvfreel(nv_nodes); 17405ecc953bSthorpej return; 17415ecc953bSthorpej } 17425ecc953bSthorpej 17435ecc953bSthorpej dm = ecalloc(1, sizeof(*dm)); 17445ecc953bSthorpej dm->dm_srcfile = yyfile; 17455ecc953bSthorpej dm->dm_srcline = currentline(); 17465ecc953bSthorpej dm->dm_name = name; 17475ecc953bSthorpej dm->dm_cmajor = cmajor; 17485ecc953bSthorpej dm->dm_bmajor = bmajor; 17499483bda7Sdholland dm->dm_opts = cond; 17503da3ab25Spooka dm->dm_devnodes = nv_nodes; 17515ecc953bSthorpej 17525ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevms, dm, dm_next); 17535ecc953bSthorpej 17545ecc953bSthorpej maxcdevm = MAX(maxcdevm, dm->dm_cmajor); 17555ecc953bSthorpej maxbdevm = MAX(maxbdevm, dm->dm_bmajor); 17565ecc953bSthorpej } 17575ecc953bSthorpej 17587aa6070dScube int 17595ecc953bSthorpej fixdevis(void) 17605ecc953bSthorpej { 17615ecc953bSthorpej struct devi *i; 17627aa6070dScube int error = 0; 17635ecc953bSthorpej 17645ecc953bSthorpej TAILQ_FOREACH(i, &alldevi, i_next) 17657aa6070dScube if (i->i_active == DEVI_ACTIVE) 17665ecc953bSthorpej selectbase(i->i_base, i->i_atdeva); 17677aa6070dScube else if (i->i_active == DEVI_ORPHAN) { 1768c130d400Scube /* 1769c130d400Scube * At this point, we can't have instances for which 1770c130d400Scube * i_at or i_pspec are NULL. 1771c130d400Scube */ 17727aa6070dScube ++error; 1773c7295a4cSchristos cfgxerror(i->i_srcfile, i->i_lineno, 17740dbd1c0eScube "`%s at %s' is orphaned (%s `%s' found)", 1775c130d400Scube i->i_name, i->i_at, i->i_pspec->p_atunit == WILD ? 1776c130d400Scube "nothing matching" : "no", i->i_at); 17777aa6070dScube } else if (vflag && i->i_active == DEVI_IGNORED) 1778c7295a4cSchristos cfgxwarn(i->i_srcfile, i->i_lineno, "ignoring " 1779c7295a4cSchristos "explicitly orphaned instance `%s at %s'", 1780c7295a4cSchristos i->i_name, i->i_at); 17817aa6070dScube 17827aa6070dScube if (error) 17837aa6070dScube return error; 17845ecc953bSthorpej 17855ecc953bSthorpej TAILQ_FOREACH(i, &allpseudo, i_next) 17867aa6070dScube if (i->i_active == DEVI_ACTIVE) 17875ecc953bSthorpej selectbase(i->i_base, NULL); 17887aa6070dScube return 0; 17895ecc953bSthorpej } 17905ecc953bSthorpej 17915ecc953bSthorpej /* 17925ecc953bSthorpej * Look up a parent spec, creating a new one if it does not exist. 17935ecc953bSthorpej */ 17945ecc953bSthorpej static struct pspec * 17955ecc953bSthorpej getpspec(struct attr *attr, struct devbase *ab, int atunit) 17965ecc953bSthorpej { 17975ecc953bSthorpej struct pspec *p; 17985ecc953bSthorpej 17995ecc953bSthorpej TAILQ_FOREACH(p, &allpspecs, p_list) { 18005ecc953bSthorpej if (p->p_iattr == attr && 18015ecc953bSthorpej p->p_atdev == ab && 18025ecc953bSthorpej p->p_atunit == atunit) 18035ecc953bSthorpej return (p); 18045ecc953bSthorpej } 18055ecc953bSthorpej 18065ecc953bSthorpej p = ecalloc(1, sizeof(*p)); 18075ecc953bSthorpej 18085ecc953bSthorpej p->p_iattr = attr; 18095ecc953bSthorpej p->p_atdev = ab; 18105ecc953bSthorpej p->p_atunit = atunit; 18115ecc953bSthorpej p->p_inst = npspecs++; 1812c130d400Scube p->p_active = 0; 18135ecc953bSthorpej 18145ecc953bSthorpej TAILQ_INSERT_TAIL(&allpspecs, p, p_list); 18155ecc953bSthorpej 18165ecc953bSthorpej return (p); 18175ecc953bSthorpej } 18185ecc953bSthorpej 18195ecc953bSthorpej /* 18205ecc953bSthorpej * Define a new instance of a specific device. 18215ecc953bSthorpej */ 18225ecc953bSthorpej static struct devi * 18235ecc953bSthorpej getdevi(const char *name) 18245ecc953bSthorpej { 18255ecc953bSthorpej struct devi *i, *firsti; 18265ecc953bSthorpej struct devbase *d; 18275ecc953bSthorpej int unit; 18285ecc953bSthorpej char base[NAMESIZE]; 18295ecc953bSthorpej 18305ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1831c7295a4cSchristos cfgerror("invalid device name `%s'", name); 18325ecc953bSthorpej return (NULL); 18335ecc953bSthorpej } 18345ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 18355ecc953bSthorpej if (d == NULL) { 1836c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 18375ecc953bSthorpej return (NULL); 18385ecc953bSthorpej } 18395ecc953bSthorpej if (d->d_ispseudo) { 1840c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 18415ecc953bSthorpej return (NULL); 18425ecc953bSthorpej } 18435ecc953bSthorpej firsti = ht_lookup(devitab, name); 18445ecc953bSthorpej i = newdevi(name, unit, d); 18455ecc953bSthorpej if (firsti == NULL) { 18465ecc953bSthorpej if (ht_insert(devitab, name, i)) 18475ecc953bSthorpej panic("getdevi(%s)", name); 18485ecc953bSthorpej *d->d_ipp = i; 18495ecc953bSthorpej d->d_ipp = &i->i_bsame; 18505ecc953bSthorpej } else { 18515ecc953bSthorpej while (firsti->i_alias) 18525ecc953bSthorpej firsti = firsti->i_alias; 18535ecc953bSthorpej firsti->i_alias = i; 18545ecc953bSthorpej } 18555ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevi, i, i_next); 18565ecc953bSthorpej ndevi++; 18575ecc953bSthorpej return (i); 18585ecc953bSthorpej } 18595ecc953bSthorpej 18605ecc953bSthorpej static const char * 18615ecc953bSthorpej concat(const char *name, int c) 18625ecc953bSthorpej { 1863c7295a4cSchristos size_t len; 18645ecc953bSthorpej char buf[NAMESIZE]; 18655ecc953bSthorpej 18665ecc953bSthorpej len = strlen(name); 18675ecc953bSthorpej if (len + 2 > sizeof(buf)) { 1868c7295a4cSchristos cfgerror("device name `%s%c' too long", name, c); 18695ecc953bSthorpej len = sizeof(buf) - 2; 18705ecc953bSthorpej } 18715ecc953bSthorpej memmove(buf, name, len); 18725ecc953bSthorpej buf[len] = c; 18735ecc953bSthorpej buf[len + 1] = 0; 18745ecc953bSthorpej return (intern(buf)); 18755ecc953bSthorpej } 18765ecc953bSthorpej 18775ecc953bSthorpej const char * 18785ecc953bSthorpej starref(const char *name) 18795ecc953bSthorpej { 18805ecc953bSthorpej 18815ecc953bSthorpej return (concat(name, '*')); 18825ecc953bSthorpej } 18835ecc953bSthorpej 18845ecc953bSthorpej const char * 18855ecc953bSthorpej wildref(const char *name) 18865ecc953bSthorpej { 18875ecc953bSthorpej 18885ecc953bSthorpej return (concat(name, '?')); 18895ecc953bSthorpej } 18905ecc953bSthorpej 18915ecc953bSthorpej /* 18925ecc953bSthorpej * Split a name like "foo0" into base name (foo) and unit number (0). 18935ecc953bSthorpej * Return 0 on success. To make this useful for names like "foo0a", 18945ecc953bSthorpej * the length of the "foo0" part is one of the arguments. 18955ecc953bSthorpej */ 18965ecc953bSthorpej static int 18975ecc953bSthorpej split(const char *name, size_t nlen, char *base, size_t bsize, int *aunit) 18985ecc953bSthorpej { 18995ecc953bSthorpej const char *cp; 1900c7295a4cSchristos int c; 1901c7295a4cSchristos size_t l; 19025ecc953bSthorpej 19035ecc953bSthorpej l = nlen; 19045ecc953bSthorpej if (l < 2 || l >= bsize || isdigit((unsigned char)*name)) 19055ecc953bSthorpej return (1); 19065ecc953bSthorpej c = (u_char)name[--l]; 19075ecc953bSthorpej if (!isdigit(c)) { 19085ecc953bSthorpej if (c == '*') 19095ecc953bSthorpej *aunit = STAR; 19105ecc953bSthorpej else if (c == '?') 19115ecc953bSthorpej *aunit = WILD; 19125ecc953bSthorpej else 19135ecc953bSthorpej return (1); 19145ecc953bSthorpej } else { 19155ecc953bSthorpej cp = &name[l]; 19165ecc953bSthorpej while (isdigit((unsigned char)cp[-1])) 19175ecc953bSthorpej l--, cp--; 19185ecc953bSthorpej *aunit = atoi(cp); 19195ecc953bSthorpej } 19205ecc953bSthorpej memmove(base, name, l); 19215ecc953bSthorpej base[l] = 0; 19225ecc953bSthorpej return (0); 19235ecc953bSthorpej } 19245ecc953bSthorpej 19255ecc953bSthorpej void 19265ecc953bSthorpej selectattr(struct attr *a) 19275ecc953bSthorpej { 19283a03bee6Suebayasi struct attrlist *al; 19293a03bee6Suebayasi struct attr *dep; 19305ecc953bSthorpej 19313a03bee6Suebayasi for (al = a->a_deps; al != NULL; al = al->al_next) { 19323a03bee6Suebayasi dep = al->al_this; 19333a03bee6Suebayasi selectattr(dep); 19343a03bee6Suebayasi } 1935c7295a4cSchristos (void)ht_insert(selecttab, a->a_name, __UNCONST(a->a_name)); 1936b599bf99Suebayasi CFGDBG(3, "attr selected `%s'", a->a_name); 19375ecc953bSthorpej } 19385ecc953bSthorpej 19395ecc953bSthorpej /* 19405ecc953bSthorpej * We have an instance of the base foo, so select it and all its 19415ecc953bSthorpej * attributes for "optional foo". 19425ecc953bSthorpej */ 19435ecc953bSthorpej static void 19445ecc953bSthorpej selectbase(struct devbase *d, struct deva *da) 19455ecc953bSthorpej { 19465ecc953bSthorpej struct attr *a; 19474caf067bSdholland struct attrlist *al; 19485ecc953bSthorpej 1949c7295a4cSchristos (void)ht_insert(selecttab, d->d_name, __UNCONST(d->d_name)); 1950b599bf99Suebayasi CFGDBG(3, "devbase selected `%s'", d->d_name); 19514caf067bSdholland for (al = d->d_attrs; al != NULL; al = al->al_next) { 19524caf067bSdholland a = al->al_this; 19535ecc953bSthorpej expandattr(a, selectattr); 19545ecc953bSthorpej } 1955da706167Suebayasi 1956da706167Suebayasi struct attr *devattr; 1957da706167Suebayasi devattr = refattr(d->d_name); 1958da706167Suebayasi expandattr(devattr, selectattr); 1959da706167Suebayasi 19605ecc953bSthorpej if (da != NULL) { 1961c7295a4cSchristos (void)ht_insert(selecttab, da->d_name, __UNCONST(da->d_name)); 1962b599bf99Suebayasi CFGDBG(3, "devattr selected `%s'", da->d_name); 19634caf067bSdholland for (al = da->d_attrs; al != NULL; al = al->al_next) { 19644caf067bSdholland a = al->al_this; 19655ecc953bSthorpej expandattr(a, selectattr); 19665ecc953bSthorpej } 19675ecc953bSthorpej } 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