1*bb52c144Suebayasi /* $NetBSD: sem.c,v 1.52 2014/10/10 07:48:50 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 1315ecc953bSthorpej void 1325ecc953bSthorpej enddefs(void) 1335ecc953bSthorpej { 1345ecc953bSthorpej struct devbase *dev; 1355ecc953bSthorpej 1365ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 1375ecc953bSthorpej if (!dev->d_isdef) { 1385ecc953bSthorpej (void)fprintf(stderr, 1395ecc953bSthorpej "%s: device `%s' used but not defined\n", 1405ecc953bSthorpej lastfile, dev->d_name); 1415ecc953bSthorpej errors++; 1425ecc953bSthorpej continue; 1435ecc953bSthorpej } 1445ecc953bSthorpej } 1455ecc953bSthorpej if (errors) { 1465ecc953bSthorpej (void)fprintf(stderr, "*** Stop.\n"); 1475ecc953bSthorpej exit(1); 1485ecc953bSthorpej } 1495ecc953bSthorpej } 1505ecc953bSthorpej 1515ecc953bSthorpej void 1525ecc953bSthorpej setdefmaxusers(int min, int def, int max) 1535ecc953bSthorpej { 1545ecc953bSthorpej 1555ecc953bSthorpej if (min < 1 || min > def || def > max) 156c7295a4cSchristos cfgerror("maxusers must have 1 <= min (%d) <= default (%d) " 157c7295a4cSchristos "<= max (%d)", min, def, max); 1585ecc953bSthorpej else { 1595ecc953bSthorpej minmaxusers = min; 1605ecc953bSthorpej defmaxusers = def; 1615ecc953bSthorpej maxmaxusers = max; 1625ecc953bSthorpej } 1635ecc953bSthorpej } 1645ecc953bSthorpej 1655ecc953bSthorpej void 1665ecc953bSthorpej setmaxusers(int n) 1675ecc953bSthorpej { 1685ecc953bSthorpej 169895e5687Scube if (maxusers == n) { 170c7295a4cSchristos cfgerror("duplicate maxusers parameter"); 1715ecc953bSthorpej return; 1725ecc953bSthorpej } 173895e5687Scube if (vflag && maxusers != 0) 174c7295a4cSchristos cfgwarn("warning: maxusers already defined"); 1755ecc953bSthorpej maxusers = n; 1765ecc953bSthorpej if (n < minmaxusers) { 177c7295a4cSchristos cfgerror("warning: minimum of %d maxusers assumed", 178c7295a4cSchristos minmaxusers); 1795ecc953bSthorpej errors--; /* take it away */ 1805ecc953bSthorpej maxusers = minmaxusers; 1815ecc953bSthorpej } else if (n > maxmaxusers) { 182c7295a4cSchristos cfgerror("warning: maxusers (%d) > %d", n, maxmaxusers); 1835ecc953bSthorpej errors--; 1845ecc953bSthorpej } 1855ecc953bSthorpej } 1865ecc953bSthorpej 1875ecc953bSthorpej void 1885ecc953bSthorpej setident(const char *i) 1895ecc953bSthorpej { 1905ecc953bSthorpej 1914a7be1f9Smrg if (i) 1925ecc953bSthorpej ident = intern(i); 1934a7be1f9Smrg else 1944a7be1f9Smrg ident = NULL; 1955ecc953bSthorpej } 1965ecc953bSthorpej 1975ecc953bSthorpej /* 1985ecc953bSthorpej * Define an attribute, optionally with an interface (a locator list) 1995ecc953bSthorpej * and a set of attribute-dependencies. 2005ecc953bSthorpej * 2015ecc953bSthorpej * Attribute dependencies MAY NOT be interface attributes. 2025ecc953bSthorpej * 2035ecc953bSthorpej * Since an empty locator list is logically different from "no interface", 2045ecc953bSthorpej * all locator lists include a dummy head node, which we discard here. 2055ecc953bSthorpej */ 2065ecc953bSthorpej int 207bb4307a6Suebayasi defattr0(const char *name, struct loclist *locs, struct attrlist *deps, 208bb4307a6Suebayasi int devclass) 209bb4307a6Suebayasi { 210bb4307a6Suebayasi 211bb4307a6Suebayasi if (locs != NULL) 212bb4307a6Suebayasi return defiattr(name, locs, deps, devclass); 213bb4307a6Suebayasi else if (devclass) 214bb4307a6Suebayasi return defdevclass(name, locs, deps, devclass); 215bb4307a6Suebayasi else 216bb4307a6Suebayasi return defattr(name, locs, deps, devclass); 217bb4307a6Suebayasi } 218bb4307a6Suebayasi 219bb4307a6Suebayasi int 22016a8771bSdholland defattr(const char *name, struct loclist *locs, struct attrlist *deps, 2215ecc953bSthorpej int devclass) 2225ecc953bSthorpej { 2235ecc953bSthorpej struct attr *a, *dep; 2244caf067bSdholland struct attrlist *al; 2255ecc953bSthorpej 2265ecc953bSthorpej /* 2275ecc953bSthorpej * If this attribute depends on any others, make sure none of 2285ecc953bSthorpej * the dependencies are interface attributes. 2295ecc953bSthorpej */ 2304caf067bSdholland for (al = deps; al != NULL; al = al->al_next) { 2314caf067bSdholland dep = al->al_this; 2325ecc953bSthorpej if (dep->a_iattr) { 233c7295a4cSchristos cfgerror("`%s' dependency `%s' is an interface " 234c7295a4cSchristos "attribute", name, dep->a_name); 2355ecc953bSthorpej return (1); 2365ecc953bSthorpej } 2375ecc953bSthorpej } 2385ecc953bSthorpej 239*bb52c144Suebayasi if (getrefattr(name, &a)) { 240c7295a4cSchristos cfgerror("attribute `%s' already defined", name); 24116a8771bSdholland loclist_destroy(locs); 2425ecc953bSthorpej return (1); 2435ecc953bSthorpej } 244*bb52c144Suebayasi if (a == NULL) 245*bb52c144Suebayasi a = mkattr(name); 2465ecc953bSthorpej 247a949e288Suebayasi a->a_deps = deps; 248bb4307a6Suebayasi expandattr(a, NULL); 2492f2f3382Suebayasi CFGDBG(3, "attr `%s' defined", a->a_name); 250bb4307a6Suebayasi 251bb4307a6Suebayasi return (0); 252bb4307a6Suebayasi } 253a949e288Suebayasi 2542f2f3382Suebayasi struct attr * 2552f2f3382Suebayasi mkattr(const char *name) 2562f2f3382Suebayasi { 2572f2f3382Suebayasi struct attr *a; 2582f2f3382Suebayasi 2592f2f3382Suebayasi a = ecalloc(1, sizeof *a); 2602f2f3382Suebayasi if (ht_insert(attrtab, name, a)) { 2612f2f3382Suebayasi free(a); 2622f2f3382Suebayasi return NULL; 2632f2f3382Suebayasi } 2642f2f3382Suebayasi a->a_name = name; 2652f2f3382Suebayasi TAILQ_INIT(&a->a_files); 2662f2f3382Suebayasi CFGDBG(3, "attr `%s' allocated", name); 2672f2f3382Suebayasi 2682f2f3382Suebayasi return a; 2692f2f3382Suebayasi } 2702f2f3382Suebayasi 271a949e288Suebayasi /* "interface attribute" initialization */ 272bb4307a6Suebayasi int 273bb4307a6Suebayasi defiattr(const char *name, struct loclist *locs, struct attrlist *deps, 274bb4307a6Suebayasi int devclass) 275bb4307a6Suebayasi { 276bb4307a6Suebayasi struct attr *a; 277bb4307a6Suebayasi int len; 278bb4307a6Suebayasi struct loclist *ll; 279bb4307a6Suebayasi 280bb4307a6Suebayasi if (devclass) 281bb4307a6Suebayasi panic("defattr(%s): locators and devclass", name); 282bb4307a6Suebayasi 283bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 284bb4307a6Suebayasi return (1); 285bb4307a6Suebayasi 286bb4307a6Suebayasi a = getattr(name); 2875ecc953bSthorpej a->a_iattr = 1; 28816a8771bSdholland /* unwrap */ 28916a8771bSdholland a->a_locs = locs->ll_next; 29016a8771bSdholland locs->ll_next = NULL; 29116a8771bSdholland loclist_destroy(locs); 292a949e288Suebayasi len = 0; 293a949e288Suebayasi for (ll = a->a_locs; ll != NULL; ll = ll->ll_next) 294a949e288Suebayasi len++; 295a949e288Suebayasi a->a_loclen = len; 296bb4307a6Suebayasi if (deps) 297bb4307a6Suebayasi CFGDBG(2, "attr `%s' iface with deps", a->a_name); 298bb4307a6Suebayasi return (0); 2995ecc953bSthorpej } 300a949e288Suebayasi 301a949e288Suebayasi /* "device class" initialization */ 302bb4307a6Suebayasi int 303bb4307a6Suebayasi defdevclass(const char *name, struct loclist *locs, struct attrlist *deps, 304bb4307a6Suebayasi int devclass) 305bb4307a6Suebayasi { 306bb4307a6Suebayasi struct attr *a; 307bbfbbde1Schristos char classenum[256], *cp; 3085ecc953bSthorpej int errored = 0; 3095ecc953bSthorpej 310bb4307a6Suebayasi if (deps) 311bb4307a6Suebayasi panic("defattr(%s): dependencies and devclass", name); 312bb4307a6Suebayasi 313bb4307a6Suebayasi if (defattr(name, locs, deps, devclass) != 0) 314bb4307a6Suebayasi return (1); 315bb4307a6Suebayasi 316bb4307a6Suebayasi a = getattr(name); 317bbfbbde1Schristos (void)snprintf(classenum, sizeof(classenum), "DV_%s", name); 3185ecc953bSthorpej for (cp = classenum + 3; *cp; cp++) { 3195ecc953bSthorpej if (!errored && 3205ecc953bSthorpej (!isalnum((unsigned char)*cp) || 3215ecc953bSthorpej (isalpha((unsigned char)*cp) && !islower((unsigned char)*cp)))) { 322c7295a4cSchristos cfgerror("device class names must be " 323c7295a4cSchristos "lower-case alphanumeric characters"); 3245ecc953bSthorpej errored = 1; 3255ecc953bSthorpej } 3265ecc953bSthorpej *cp = toupper((unsigned char)*cp); 3275ecc953bSthorpej } 3285ecc953bSthorpej a->a_devclass = intern(classenum); 3295ecc953bSthorpej 3305ecc953bSthorpej return (0); 3315ecc953bSthorpej } 3325ecc953bSthorpej 3335ecc953bSthorpej /* 3345ecc953bSthorpej * Return true if the given `error object' is embedded in the given 3355ecc953bSthorpej * pointer list. 3365ecc953bSthorpej */ 3375ecc953bSthorpej static int 3384caf067bSdholland has_errobj(struct attrlist *al, struct attr *obj) 3395ecc953bSthorpej { 3405ecc953bSthorpej 3414caf067bSdholland for (; al != NULL; al = al->al_next) 3424caf067bSdholland if (al->al_this == obj) 3435ecc953bSthorpej return (1); 3445ecc953bSthorpej return (0); 3455ecc953bSthorpej } 3465ecc953bSthorpej 3475ecc953bSthorpej /* 3485ecc953bSthorpej * Return true if the given attribute is embedded in the given 3495ecc953bSthorpej * pointer list. 3505ecc953bSthorpej */ 3515ecc953bSthorpej int 3524caf067bSdholland has_attr(struct attrlist *al, const char *attr) 3535ecc953bSthorpej { 3545ecc953bSthorpej struct attr *a; 3555ecc953bSthorpej 3565ecc953bSthorpej if ((a = getattr(attr)) == NULL) 3575ecc953bSthorpej return (0); 3585ecc953bSthorpej 3594caf067bSdholland for (; al != NULL; al = al->al_next) 3604caf067bSdholland if (al->al_this == a) 3615ecc953bSthorpej return (1); 3625ecc953bSthorpej return (0); 3635ecc953bSthorpej } 3645ecc953bSthorpej 3655ecc953bSthorpej /* 3665ecc953bSthorpej * Add a device base to a list in an attribute (actually, to any list). 3675ecc953bSthorpej * Note that this does not check for duplicates, and does reverse the 3685ecc953bSthorpej * list order, but no one cares anyway. 3695ecc953bSthorpej */ 3705ecc953bSthorpej static struct nvlist * 3715ecc953bSthorpej addtoattr(struct nvlist *l, struct devbase *dev) 3725ecc953bSthorpej { 3735ecc953bSthorpej struct nvlist *n; 3745ecc953bSthorpej 3755ecc953bSthorpej n = newnv(NULL, NULL, dev, 0, l); 3765ecc953bSthorpej return (n); 3775ecc953bSthorpej } 3785ecc953bSthorpej 3795ecc953bSthorpej /* 3805ecc953bSthorpej * Define a device. This may (or may not) also define an interface 3815ecc953bSthorpej * attribute and/or refer to existing attributes. 3825ecc953bSthorpej */ 3835ecc953bSthorpej void 38416a8771bSdholland defdev(struct devbase *dev, struct loclist *loclist, struct attrlist *attrs, 3855ecc953bSthorpej int ispseudo) 3865ecc953bSthorpej { 38716a8771bSdholland struct loclist *ll; 3884caf067bSdholland struct attrlist *al; 3895ecc953bSthorpej struct attr *a; 3905ecc953bSthorpej 3915ecc953bSthorpej if (dev == &errdev) 3925ecc953bSthorpej goto bad; 3935ecc953bSthorpej if (dev->d_isdef) { 394c7295a4cSchristos cfgerror("redefinition of `%s'", dev->d_name); 3955ecc953bSthorpej goto bad; 3965ecc953bSthorpej } 3975ecc953bSthorpej 3985ecc953bSthorpej dev->d_isdef = 1; 3995ecc953bSthorpej if (has_errobj(attrs, &errattr)) 4005ecc953bSthorpej goto bad; 4015ecc953bSthorpej 4025ecc953bSthorpej /* 4035ecc953bSthorpej * Handle implicit attribute definition from locator list. Do 4045ecc953bSthorpej * this before scanning the `at' list so that we can have, e.g.: 4055ecc953bSthorpej * device foo at other, foo { slot = -1 } 4065ecc953bSthorpej * (where you can plug in a foo-bus extender to a foo-bus). 4075ecc953bSthorpej */ 4085ecc953bSthorpej if (loclist != NULL) { 40916a8771bSdholland ll = loclist; 4105ecc953bSthorpej loclist = NULL; /* defattr disposes of them for us */ 411bb4307a6Suebayasi if (defiattr(dev->d_name, ll, NULL, 0)) 4125ecc953bSthorpej goto bad; 4134caf067bSdholland attrs = attrlist_cons(attrs, getattr(dev->d_name)); 4144caf067bSdholland /* This used to be stored but was never used */ 4154caf067bSdholland /* attrs->al_name = dev->d_name; */ 416c454f920Scube } 417c454f920Scube 418c130d400Scube /* 419c130d400Scube * Pseudo-devices can have children. Consider them as 420c130d400Scube * attaching at root. 421c130d400Scube */ 422c454f920Scube if (ispseudo) { 4234caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) 4244caf067bSdholland if (al->al_this->a_iattr) 425c454f920Scube break; 4264caf067bSdholland if (al != NULL) { 427b66156c7Sdrochner if (ispseudo < 2) { 428b66156c7Sdrochner if (version >= 20080610) 429b66156c7Sdrochner cfgerror("interface attribute on " 430b66156c7Sdrochner "non-device pseudo `%s'", dev->d_name); 431b66156c7Sdrochner else { 432b66156c7Sdrochner ispseudo = 2; 433b66156c7Sdrochner } 434b66156c7Sdrochner } 435c130d400Scube ht_insert(devroottab, dev->d_name, dev); 4365ecc953bSthorpej } 437b66156c7Sdrochner } 4385ecc953bSthorpej 4395ecc953bSthorpej /* Committed! Set up fields. */ 4405ecc953bSthorpej dev->d_ispseudo = ispseudo; 4415ecc953bSthorpej dev->d_attrs = attrs; 4425ecc953bSthorpej dev->d_classattr = NULL; /* for now */ 4435ecc953bSthorpej 4445ecc953bSthorpej /* 4455ecc953bSthorpej * For each interface attribute this device refers to, add this 4465ecc953bSthorpej * device to its reference list. This makes, e.g., finding all 4475ecc953bSthorpej * "scsi"s easier. 4485ecc953bSthorpej * 4495ecc953bSthorpej * While looking through the attributes, set up the device 4505ecc953bSthorpej * class if any are devclass attributes (and error out if the 4515ecc953bSthorpej * device has two classes). 4525ecc953bSthorpej */ 4534caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 4544caf067bSdholland a = al->al_this; 4555ecc953bSthorpej if (a->a_iattr) 4565ecc953bSthorpej a->a_refs = addtoattr(a->a_refs, dev); 4575ecc953bSthorpej if (a->a_devclass != NULL) { 4585ecc953bSthorpej if (dev->d_classattr != NULL) { 459c7295a4cSchristos cfgerror("device `%s' has multiple classes " 460c7295a4cSchristos "(`%s' and `%s')", 4615ecc953bSthorpej dev->d_name, dev->d_classattr->a_name, 4625ecc953bSthorpej a->a_name); 4635ecc953bSthorpej } 4645ecc953bSthorpej dev->d_classattr = a; 4655ecc953bSthorpej } 4665ecc953bSthorpej } 4675ecc953bSthorpej return; 4685ecc953bSthorpej bad: 46916a8771bSdholland loclist_destroy(loclist); 4704caf067bSdholland attrlist_destroyall(attrs); 4715ecc953bSthorpej } 4725ecc953bSthorpej 4735ecc953bSthorpej /* 4745ecc953bSthorpej * Look up a devbase. Also makes sure it is a reasonable name, 4755ecc953bSthorpej * i.e., does not end in a digit or contain special characters. 4765ecc953bSthorpej */ 4775ecc953bSthorpej struct devbase * 4785ecc953bSthorpej getdevbase(const char *name) 4795ecc953bSthorpej { 480c7295a4cSchristos const u_char *p; 4815ecc953bSthorpej struct devbase *dev; 4825ecc953bSthorpej 483c7295a4cSchristos p = (const u_char *)name; 4845ecc953bSthorpej if (!isalpha(*p)) 4855ecc953bSthorpej goto badname; 4865ecc953bSthorpej while (*++p) { 4875ecc953bSthorpej if (!isalnum(*p) && *p != '_') 4885ecc953bSthorpej goto badname; 4895ecc953bSthorpej } 4905ecc953bSthorpej if (isdigit(*--p)) { 4915ecc953bSthorpej badname: 492c7295a4cSchristos cfgerror("bad device base name `%s'", name); 4935ecc953bSthorpej return (&errdev); 4945ecc953bSthorpej } 4955ecc953bSthorpej dev = ht_lookup(devbasetab, name); 4965ecc953bSthorpej if (dev == NULL) { 4975ecc953bSthorpej dev = ecalloc(1, sizeof *dev); 4985ecc953bSthorpej dev->d_name = name; 4995ecc953bSthorpej dev->d_isdef = 0; 500d767912bSdrochner dev->d_major = NODEVMAJOR; 5015ecc953bSthorpej dev->d_attrs = NULL; 5025ecc953bSthorpej dev->d_ihead = NULL; 5035ecc953bSthorpej dev->d_ipp = &dev->d_ihead; 5045ecc953bSthorpej dev->d_ahead = NULL; 5055ecc953bSthorpej dev->d_app = &dev->d_ahead; 5065ecc953bSthorpej dev->d_umax = 0; 5075ecc953bSthorpej TAILQ_INSERT_TAIL(&allbases, dev, d_next); 5085ecc953bSthorpej if (ht_insert(devbasetab, name, dev)) 5095ecc953bSthorpej panic("getdevbase(%s)", name); 5105ecc953bSthorpej } 5115ecc953bSthorpej return (dev); 5125ecc953bSthorpej } 5135ecc953bSthorpej 5145ecc953bSthorpej /* 5155ecc953bSthorpej * Define some of a device's allowable parent attachments. 5165ecc953bSthorpej * There may be a list of (plain) attributes. 5175ecc953bSthorpej */ 5185ecc953bSthorpej void 5195ecc953bSthorpej defdevattach(struct deva *deva, struct devbase *dev, struct nvlist *atlist, 5204caf067bSdholland struct attrlist *attrs) 5215ecc953bSthorpej { 5225ecc953bSthorpej struct nvlist *nv; 5234caf067bSdholland struct attrlist *al; 5245ecc953bSthorpej struct attr *a; 5255ecc953bSthorpej struct deva *da; 5265ecc953bSthorpej 5275ecc953bSthorpej if (dev == &errdev) 5285ecc953bSthorpej goto bad; 5295ecc953bSthorpej if (deva == NULL) 5305ecc953bSthorpej deva = getdevattach(dev->d_name); 5315ecc953bSthorpej if (deva == &errdeva) 5325ecc953bSthorpej goto bad; 5335ecc953bSthorpej if (!dev->d_isdef) { 534c7295a4cSchristos cfgerror("attaching undefined device `%s'", dev->d_name); 5355ecc953bSthorpej goto bad; 5365ecc953bSthorpej } 5375ecc953bSthorpej if (deva->d_isdef) { 538c7295a4cSchristos cfgerror("redefinition of `%s'", deva->d_name); 5395ecc953bSthorpej goto bad; 5405ecc953bSthorpej } 5415ecc953bSthorpej if (dev->d_ispseudo) { 542c7295a4cSchristos cfgerror("pseudo-devices can't attach"); 5435ecc953bSthorpej goto bad; 5445ecc953bSthorpej } 5455ecc953bSthorpej 5465ecc953bSthorpej deva->d_isdef = 1; 5475ecc953bSthorpej if (has_errobj(attrs, &errattr)) 5485ecc953bSthorpej goto bad; 5494caf067bSdholland for (al = attrs; al != NULL; al = al->al_next) { 5504caf067bSdholland a = al->al_this; 5515ecc953bSthorpej if (a == &errattr) 5525ecc953bSthorpej continue; /* already complained */ 5535ecc953bSthorpej if (a->a_iattr || a->a_devclass != NULL) 554c7295a4cSchristos cfgerror("`%s' is not a plain attribute", a->a_name); 5555ecc953bSthorpej } 5565ecc953bSthorpej 5575ecc953bSthorpej /* Committed! Set up fields. */ 5585ecc953bSthorpej deva->d_attrs = attrs; 5595ecc953bSthorpej deva->d_atlist = atlist; 5605ecc953bSthorpej deva->d_devbase = dev; 5612f2f3382Suebayasi CFGDBG(3, "deva `%s' defined", deva->d_name); 5622f2f3382Suebayasi 5632f2f3382Suebayasi /* 564a5a68b71Suebayasi * Implicit attribute definition for device attachment. 5652f2f3382Suebayasi */ 5662f2f3382Suebayasi refattr(deva->d_name); 5675ecc953bSthorpej 5685ecc953bSthorpej /* 5695ecc953bSthorpej * Turn the `at' list into interface attributes (map each 5705ecc953bSthorpej * nv_name to an attribute, or to NULL for root), and add 5715ecc953bSthorpej * this device to those attributes, so that children can 5725ecc953bSthorpej * be listed at this particular device if they are supported 5735ecc953bSthorpej * by that attribute. 5745ecc953bSthorpej */ 5755ecc953bSthorpej for (nv = atlist; nv != NULL; nv = nv->nv_next) { 5765ecc953bSthorpej if (nv->nv_name == NULL) 5775ecc953bSthorpej nv->nv_ptr = a = NULL; /* at root */ 5785ecc953bSthorpej else 5795ecc953bSthorpej nv->nv_ptr = a = getattr(nv->nv_name); 5805ecc953bSthorpej if (a == &errattr) 5815ecc953bSthorpej continue; /* already complained */ 5825ecc953bSthorpej 5835ecc953bSthorpej /* 5845ecc953bSthorpej * Make sure that an attachment spec doesn't 5855ecc953bSthorpej * already say how to attach to this attribute. 5865ecc953bSthorpej */ 5875ecc953bSthorpej for (da = dev->d_ahead; da != NULL; da = da->d_bsame) 5885ecc953bSthorpej if (onlist(da->d_atlist, a)) 589c7295a4cSchristos cfgerror("attach at `%s' already done by `%s'", 5905ecc953bSthorpej a ? a->a_name : "root", da->d_name); 5915ecc953bSthorpej 592c130d400Scube if (a == NULL) { 593c130d400Scube ht_insert(devroottab, dev->d_name, dev); 5945ecc953bSthorpej continue; /* at root; don't add */ 595c130d400Scube } 5965ecc953bSthorpej if (!a->a_iattr) 597c7295a4cSchristos cfgerror("%s cannot be at plain attribute `%s'", 5985ecc953bSthorpej dev->d_name, a->a_name); 5995ecc953bSthorpej else 6005ecc953bSthorpej a->a_devs = addtoattr(a->a_devs, dev); 6015ecc953bSthorpej } 6025ecc953bSthorpej 6035ecc953bSthorpej /* attach to parent */ 6045ecc953bSthorpej *dev->d_app = deva; 6055ecc953bSthorpej dev->d_app = &deva->d_bsame; 6065ecc953bSthorpej return; 6075ecc953bSthorpej bad: 6085ecc953bSthorpej nvfreel(atlist); 6094caf067bSdholland attrlist_destroyall(attrs); 6105ecc953bSthorpej } 6115ecc953bSthorpej 6125ecc953bSthorpej /* 6135ecc953bSthorpej * Look up a device attachment. Also makes sure it is a reasonable 6145ecc953bSthorpej * name, i.e., does not contain digits or special characters. 6155ecc953bSthorpej */ 6165ecc953bSthorpej struct deva * 6175ecc953bSthorpej getdevattach(const char *name) 6185ecc953bSthorpej { 619c7295a4cSchristos const u_char *p; 6205ecc953bSthorpej struct deva *deva; 6215ecc953bSthorpej 622c7295a4cSchristos p = (const u_char *)name; 6235ecc953bSthorpej if (!isalpha(*p)) 6245ecc953bSthorpej goto badname; 6255ecc953bSthorpej while (*++p) { 6265ecc953bSthorpej if (!isalnum(*p) && *p != '_') 6275ecc953bSthorpej goto badname; 6285ecc953bSthorpej } 6295ecc953bSthorpej if (isdigit(*--p)) { 6305ecc953bSthorpej badname: 631c7295a4cSchristos cfgerror("bad device attachment name `%s'", name); 6325ecc953bSthorpej return (&errdeva); 6335ecc953bSthorpej } 6345ecc953bSthorpej deva = ht_lookup(devatab, name); 6355ecc953bSthorpej if (deva == NULL) { 6365ecc953bSthorpej deva = ecalloc(1, sizeof *deva); 6375ecc953bSthorpej deva->d_name = name; 6385ecc953bSthorpej deva->d_bsame = NULL; 6395ecc953bSthorpej deva->d_isdef = 0; 6405ecc953bSthorpej deva->d_devbase = NULL; 6415ecc953bSthorpej deva->d_atlist = NULL; 6425ecc953bSthorpej deva->d_attrs = NULL; 6435ecc953bSthorpej deva->d_ihead = NULL; 6445ecc953bSthorpej deva->d_ipp = &deva->d_ihead; 6455ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevas, deva, d_next); 6465ecc953bSthorpej if (ht_insert(devatab, name, deva)) 6475ecc953bSthorpej panic("getdeva(%s)", name); 6485ecc953bSthorpej } 6495ecc953bSthorpej return (deva); 6505ecc953bSthorpej } 6515ecc953bSthorpej 6525ecc953bSthorpej /* 6535ecc953bSthorpej * Look up an attribute. 6545ecc953bSthorpej */ 6555ecc953bSthorpej struct attr * 6565ecc953bSthorpej getattr(const char *name) 6575ecc953bSthorpej { 6585ecc953bSthorpej struct attr *a; 6595ecc953bSthorpej 6605ecc953bSthorpej if ((a = ht_lookup(attrtab, name)) == NULL) { 661c7295a4cSchristos cfgerror("undefined attribute `%s'", name); 6625ecc953bSthorpej a = &errattr; 6635ecc953bSthorpej } 6645ecc953bSthorpej return (a); 6655ecc953bSthorpej } 6665ecc953bSthorpej 6675ecc953bSthorpej /* 6682f2f3382Suebayasi * Implicit attribute definition. 6692f2f3382Suebayasi */ 6702f2f3382Suebayasi void 6712f2f3382Suebayasi refattr(const char *name) 6722f2f3382Suebayasi { 6732f2f3382Suebayasi 6742f2f3382Suebayasi if ((ht_lookup(attrtab, name)) == NULL) 6752f2f3382Suebayasi (void)mkattr(name); 6762f2f3382Suebayasi } 6772f2f3382Suebayasi 678*bb52c144Suebayasi int 679*bb52c144Suebayasi getrefattr(const char *name, struct attr **ra) 680*bb52c144Suebayasi { 681*bb52c144Suebayasi struct attr *a; 682*bb52c144Suebayasi 683*bb52c144Suebayasi a = ht_lookup(attrtab, name); 684*bb52c144Suebayasi if (a == NULL) { 685*bb52c144Suebayasi *ra = NULL; 686*bb52c144Suebayasi return (0); 687*bb52c144Suebayasi } 688*bb52c144Suebayasi /* 689*bb52c144Suebayasi * Check if the existing attr is only referenced, not really defined. 690*bb52c144Suebayasi */ 691*bb52c144Suebayasi if (a->a_deps == NULL && 692*bb52c144Suebayasi a->a_iattr == 0 && 693*bb52c144Suebayasi a->a_devclass == 0) { 694*bb52c144Suebayasi *ra = a; 695*bb52c144Suebayasi return (0); 696*bb52c144Suebayasi } 697*bb52c144Suebayasi return (1); 698*bb52c144Suebayasi } 699*bb52c144Suebayasi 7002f2f3382Suebayasi /* 7015ecc953bSthorpej * Recursively expand an attribute and its dependencies, checking for 7025ecc953bSthorpej * cycles, and invoking a callback for each attribute found. 7035ecc953bSthorpej */ 7045ecc953bSthorpej void 7055ecc953bSthorpej expandattr(struct attr *a, void (*callback)(struct attr *)) 7065ecc953bSthorpej { 7074caf067bSdholland struct attrlist *al; 7085ecc953bSthorpej struct attr *dep; 7095ecc953bSthorpej 7105ecc953bSthorpej if (a->a_expanding) { 711c7295a4cSchristos cfgerror("circular dependency on attribute `%s'", a->a_name); 7125ecc953bSthorpej return; 7135ecc953bSthorpej } 7145ecc953bSthorpej 7155ecc953bSthorpej a->a_expanding = 1; 7165ecc953bSthorpej 7175ecc953bSthorpej /* First expand all of this attribute's dependencies. */ 7184caf067bSdholland for (al = a->a_deps; al != NULL; al = al->al_next) { 7194caf067bSdholland dep = al->al_this; 7205ecc953bSthorpej expandattr(dep, callback); 7215ecc953bSthorpej } 7225ecc953bSthorpej 7235ecc953bSthorpej /* ...and now invoke the callback for ourself. */ 7245ecc953bSthorpej if (callback != NULL) 7255ecc953bSthorpej (*callback)(a); 7265ecc953bSthorpej 7275ecc953bSthorpej a->a_expanding = 0; 7285ecc953bSthorpej } 7295ecc953bSthorpej 7305ecc953bSthorpej /* 7315ecc953bSthorpej * Set the major device number for a device, so that it can be used 7325ecc953bSthorpej * as a root/dumps "on" device in a configuration. 7335ecc953bSthorpej */ 7345ecc953bSthorpej void 735d767912bSdrochner setmajor(struct devbase *d, devmajor_t n) 7365ecc953bSthorpej { 7375ecc953bSthorpej 738d767912bSdrochner if (d != &errdev && d->d_major != NODEVMAJOR) 739d767912bSdrochner cfgerror("device `%s' is already major %d", 740d767912bSdrochner d->d_name, d->d_major); 7415ecc953bSthorpej else 7425ecc953bSthorpej d->d_major = n; 7435ecc953bSthorpej } 7445ecc953bSthorpej 7455ecc953bSthorpej const char * 746d767912bSdrochner major2name(devmajor_t maj) 7475ecc953bSthorpej { 7485ecc953bSthorpej struct devbase *dev; 7495ecc953bSthorpej struct devm *dm; 7505ecc953bSthorpej 7515ecc953bSthorpej if (!do_devsw) { 7525ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 7535ecc953bSthorpej if (dev->d_major == maj) 7545ecc953bSthorpej return (dev->d_name); 7555ecc953bSthorpej } 7565ecc953bSthorpej } else { 7575ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 7585ecc953bSthorpej if (dm->dm_bmajor == maj) 7595ecc953bSthorpej return (dm->dm_name); 7605ecc953bSthorpej } 7615ecc953bSthorpej } 7625ecc953bSthorpej return (NULL); 7635ecc953bSthorpej } 7645ecc953bSthorpej 765d767912bSdrochner devmajor_t 7665ecc953bSthorpej dev2major(struct devbase *dev) 7675ecc953bSthorpej { 7685ecc953bSthorpej struct devm *dm; 7695ecc953bSthorpej 7705ecc953bSthorpej if (!do_devsw) 7715ecc953bSthorpej return (dev->d_major); 7725ecc953bSthorpej 7735ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 7745ecc953bSthorpej if (strcmp(dm->dm_name, dev->d_name) == 0) 7755ecc953bSthorpej return (dm->dm_bmajor); 7765ecc953bSthorpej } 777d767912bSdrochner return (NODEVMAJOR); 7785ecc953bSthorpej } 7795ecc953bSthorpej 7805ecc953bSthorpej /* 7815ecc953bSthorpej * Make a string description of the device at maj/min. 7825ecc953bSthorpej */ 7835ecc953bSthorpej static const char * 784d767912bSdrochner makedevstr(devmajor_t maj, devminor_t min) 7855ecc953bSthorpej { 786c7295a4cSchristos const char *devicename; 7875ecc953bSthorpej char buf[32]; 7885ecc953bSthorpej 789c7295a4cSchristos devicename = major2name(maj); 790c7295a4cSchristos if (devicename == NULL) 791d767912bSdrochner (void)snprintf(buf, sizeof(buf), "<%d/%d>", maj, min); 7925ecc953bSthorpej else 793d767912bSdrochner (void)snprintf(buf, sizeof(buf), "%s%d%c", devicename, 794d767912bSdrochner min / maxpartitions, (min % maxpartitions) + 'a'); 7955ecc953bSthorpej 7965ecc953bSthorpej return (intern(buf)); 7975ecc953bSthorpej } 7985ecc953bSthorpej 7995ecc953bSthorpej /* 8005ecc953bSthorpej * Map things like "ra0b" => makedev(major("ra"), 0*maxpartitions + 'b'-'a'). 8015ecc953bSthorpej * Handle the case where the device number is given but there is no 8025ecc953bSthorpej * corresponding name, and map NULL to the default. 8035ecc953bSthorpej */ 8045ecc953bSthorpej static int 8055ecc953bSthorpej resolve(struct nvlist **nvp, const char *name, const char *what, 8065ecc953bSthorpej struct nvlist *dflt, int part) 8075ecc953bSthorpej { 8085ecc953bSthorpej struct nvlist *nv; 8095ecc953bSthorpej struct devbase *dev; 8105ecc953bSthorpej const char *cp; 811d767912bSdrochner devmajor_t maj; 812d767912bSdrochner devminor_t min; 8130001b928Schristos int i, l; 8145ecc953bSthorpej int unit; 8155ecc953bSthorpej char buf[NAMESIZE]; 8165ecc953bSthorpej 8175cc303e1Slukem if ((part -= 'a') >= maxpartitions || part < 0) 8185ecc953bSthorpej panic("resolve"); 8195ecc953bSthorpej if ((nv = *nvp) == NULL) { 8205ecc953bSthorpej dev_t d = NODEV; 8215ecc953bSthorpej /* 8225ecc953bSthorpej * Apply default. Easiest to do this by number. 8235ecc953bSthorpej * Make sure to retain NODEVness, if this is dflt's disposition. 8245ecc953bSthorpej */ 8255cc303e1Slukem if ((dev_t)dflt->nv_num != NODEV) { 8260001b928Schristos maj = major(dflt->nv_num); 8270001b928Schristos min = ((minor(dflt->nv_num) / maxpartitions) * 8285ecc953bSthorpej maxpartitions) + part; 8295ecc953bSthorpej d = makedev(maj, min); 8305ecc953bSthorpej cp = makedevstr(maj, min); 8315ecc953bSthorpej } else 8325ecc953bSthorpej cp = NULL; 8335ecc953bSthorpej *nvp = nv = newnv(NULL, cp, NULL, d, NULL); 8345ecc953bSthorpej } 8355cc303e1Slukem if ((dev_t)nv->nv_num != NODEV) { 8365ecc953bSthorpej /* 8375ecc953bSthorpej * By the numbers. Find the appropriate major number 8385ecc953bSthorpej * to make a name. 8395ecc953bSthorpej */ 8400001b928Schristos maj = major(nv->nv_num); 8410001b928Schristos min = minor(nv->nv_num); 8425ecc953bSthorpej nv->nv_str = makedevstr(maj, min); 8435ecc953bSthorpej return (0); 8445ecc953bSthorpej } 8455ecc953bSthorpej 8465ecc953bSthorpej if (nv->nv_str == NULL || nv->nv_str == s_qmark) 8475ecc953bSthorpej /* 8485ecc953bSthorpej * Wildcarded or unspecified; leave it as NODEV. 8495ecc953bSthorpej */ 8505ecc953bSthorpej return (0); 8515ecc953bSthorpej 8525ecc953bSthorpej /* 8535ecc953bSthorpej * The normal case: things like "ra2b". Check for partition 8545ecc953bSthorpej * suffix, remove it if there, and split into name ("ra") and 8555ecc953bSthorpej * unit (2). 8565ecc953bSthorpej */ 8575ecc953bSthorpej l = i = strlen(nv->nv_str); 8585ecc953bSthorpej cp = &nv->nv_str[l]; 8595ecc953bSthorpej if (l > 1 && *--cp >= 'a' && *cp < 'a' + maxpartitions && 8605ecc953bSthorpej isdigit((unsigned char)cp[-1])) { 8615ecc953bSthorpej l--; 8625ecc953bSthorpej part = *cp - 'a'; 8635ecc953bSthorpej } 8645ecc953bSthorpej cp = nv->nv_str; 8655ecc953bSthorpej if (split(cp, l, buf, sizeof buf, &unit)) { 866c7295a4cSchristos cfgerror("%s: invalid %s device name `%s'", name, what, cp); 8675ecc953bSthorpej return (1); 8685ecc953bSthorpej } 8695ecc953bSthorpej dev = ht_lookup(devbasetab, intern(buf)); 8705ecc953bSthorpej if (dev == NULL) { 871c7295a4cSchristos cfgerror("%s: device `%s' does not exist", name, buf); 8725ecc953bSthorpej return (1); 8735ecc953bSthorpej } 8745ecc953bSthorpej 8755ecc953bSthorpej /* 8765ecc953bSthorpej * Check for the magic network interface attribute, and 8775ecc953bSthorpej * don't bother making a device number. 8785ecc953bSthorpej */ 8795ecc953bSthorpej if (has_attr(dev->d_attrs, s_ifnet)) { 8800001b928Schristos nv->nv_num = NODEV; 8815ecc953bSthorpej nv->nv_ifunit = unit; /* XXX XXX XXX */ 8825ecc953bSthorpej } else { 8835ecc953bSthorpej maj = dev2major(dev); 8845cc303e1Slukem if (maj == NODEVMAJOR) { 885c7295a4cSchristos cfgerror("%s: can't make %s device from `%s'", 8865ecc953bSthorpej name, what, nv->nv_str); 8875ecc953bSthorpej return (1); 8885ecc953bSthorpej } 8890001b928Schristos nv->nv_num = makedev(maj, unit * maxpartitions + part); 8905ecc953bSthorpej } 8915ecc953bSthorpej 8925ecc953bSthorpej nv->nv_name = dev->d_name; 8935ecc953bSthorpej return (0); 8945ecc953bSthorpej } 8955ecc953bSthorpej 8965ecc953bSthorpej /* 8975ecc953bSthorpej * Add a completed configuration to the list. 8985ecc953bSthorpej */ 8995ecc953bSthorpej void 9005ecc953bSthorpej addconf(struct config *cf0) 9015ecc953bSthorpej { 9025ecc953bSthorpej struct config *cf; 9035ecc953bSthorpej const char *name; 9045ecc953bSthorpej 9055ecc953bSthorpej name = cf0->cf_name; 9065ecc953bSthorpej cf = ecalloc(1, sizeof *cf); 9075ecc953bSthorpej if (ht_insert(cfhashtab, name, cf)) { 908c7295a4cSchristos cfgerror("configuration `%s' already defined", name); 9095ecc953bSthorpej free(cf); 9105ecc953bSthorpej goto bad; 9115ecc953bSthorpej } 9125ecc953bSthorpej *cf = *cf0; 9135ecc953bSthorpej 9145ecc953bSthorpej /* 9155ecc953bSthorpej * Resolve the root device. 9165ecc953bSthorpej */ 917cd429362Serh if (cf->cf_root == NULL) { 918c7295a4cSchristos cfgerror("%s: no root device specified", name); 9195ecc953bSthorpej goto bad; 9205ecc953bSthorpej } 921cd429362Serh if (cf->cf_root && cf->cf_root->nv_str != s_qmark) { 922cd429362Serh struct nvlist *nv; 923cd429362Serh nv = cf->cf_root; 9245ecc953bSthorpej if (resolve(&cf->cf_root, name, "root", nv, 'a')) 9255ecc953bSthorpej goto bad; 9265ecc953bSthorpej } 9275ecc953bSthorpej 9285ecc953bSthorpej /* 9295ecc953bSthorpej * Resolve the dump device. 9305ecc953bSthorpej */ 9315ecc953bSthorpej if (cf->cf_dump == NULL || cf->cf_dump->nv_str == s_qmark) { 9325ecc953bSthorpej /* 9335ecc953bSthorpej * Wildcarded dump device is equivalent to unspecified. 9345ecc953bSthorpej */ 9355ecc953bSthorpej cf->cf_dump = NULL; 9365ecc953bSthorpej } else if (cf->cf_dump->nv_str == s_none) { 9375ecc953bSthorpej /* 9385ecc953bSthorpej * Operator has requested that no dump device should be 9395ecc953bSthorpej * configured; do nothing. 9405ecc953bSthorpej */ 9415ecc953bSthorpej } else { 9425ecc953bSthorpej if (resolve(&cf->cf_dump, name, "dumps", cf->cf_dump, 'b')) 9435ecc953bSthorpej goto bad; 9445ecc953bSthorpej } 9455ecc953bSthorpej 9465ecc953bSthorpej /* Wildcarded fstype is `unspecified'. */ 9475ecc953bSthorpej if (cf->cf_fstype == s_qmark) 9485ecc953bSthorpej cf->cf_fstype = NULL; 9495ecc953bSthorpej 9505ecc953bSthorpej TAILQ_INSERT_TAIL(&allcf, cf, cf_next); 9515ecc953bSthorpej return; 9525ecc953bSthorpej bad: 9535ecc953bSthorpej nvfreel(cf0->cf_root); 9545ecc953bSthorpej nvfreel(cf0->cf_dump); 9555ecc953bSthorpej } 9565ecc953bSthorpej 9575ecc953bSthorpej void 9585ecc953bSthorpej setconf(struct nvlist **npp, const char *what, struct nvlist *v) 9595ecc953bSthorpej { 9605ecc953bSthorpej 9615ecc953bSthorpej if (*npp != NULL) { 962c7295a4cSchristos cfgerror("duplicate %s specification", what); 9635ecc953bSthorpej nvfreel(v); 9645ecc953bSthorpej } else 9655ecc953bSthorpej *npp = v; 9665ecc953bSthorpej } 9675ecc953bSthorpej 9685ecc953bSthorpej void 96942b52b8aScube delconf(const char *name) 97042b52b8aScube { 97142b52b8aScube struct config *cf; 97242b52b8aScube 97342b52b8aScube if (ht_lookup(cfhashtab, name) == NULL) { 974c7295a4cSchristos cfgerror("configuration `%s' undefined", name); 97542b52b8aScube return; 97642b52b8aScube } 97742b52b8aScube (void)ht_remove(cfhashtab, name); 97842b52b8aScube 97942b52b8aScube TAILQ_FOREACH(cf, &allcf, cf_next) 98042b52b8aScube if (!strcmp(cf->cf_name, name)) 98142b52b8aScube break; 98242b52b8aScube if (cf == NULL) 98342b52b8aScube panic("lost configuration `%s'", name); 98442b52b8aScube 98542b52b8aScube TAILQ_REMOVE(&allcf, cf, cf_next); 98642b52b8aScube } 98742b52b8aScube 98842b52b8aScube void 9895ecc953bSthorpej setfstype(const char **fstp, const char *v) 9905ecc953bSthorpej { 9915ecc953bSthorpej 9925ecc953bSthorpej if (*fstp != NULL) { 993c7295a4cSchristos cfgerror("multiple fstype specifications"); 9945ecc953bSthorpej return; 9955ecc953bSthorpej } 9965ecc953bSthorpej 9975ecc953bSthorpej if (v != s_qmark && OPT_FSOPT(v)) { 998c7295a4cSchristos cfgerror("\"%s\" is not a configured file system", v); 9995ecc953bSthorpej return; 10005ecc953bSthorpej } 10015ecc953bSthorpej 10025ecc953bSthorpej *fstp = v; 10035ecc953bSthorpej } 10045ecc953bSthorpej 10055ecc953bSthorpej static struct devi * 10065ecc953bSthorpej newdevi(const char *name, int unit, struct devbase *d) 10075ecc953bSthorpej { 10085ecc953bSthorpej struct devi *i; 10095ecc953bSthorpej 10105ecc953bSthorpej i = ecalloc(1, sizeof *i); 10115ecc953bSthorpej i->i_name = name; 10125ecc953bSthorpej i->i_unit = unit; 10135ecc953bSthorpej i->i_base = d; 10145ecc953bSthorpej i->i_bsame = NULL; 10155ecc953bSthorpej i->i_asame = NULL; 10165ecc953bSthorpej i->i_alias = NULL; 10175ecc953bSthorpej i->i_at = NULL; 10185ecc953bSthorpej i->i_pspec = NULL; 10195ecc953bSthorpej i->i_atdeva = NULL; 10205ecc953bSthorpej i->i_locs = NULL; 10215ecc953bSthorpej i->i_cfflags = 0; 10225ecc953bSthorpej i->i_lineno = currentline(); 10230dbd1c0eScube i->i_srcfile = yyfile; 10247aa6070dScube i->i_active = DEVI_ORPHAN; /* Proper analysis comes later */ 1025a31ff6b4Scube i->i_level = devilevel; 102690ac64deSpooka i->i_pseudoroot = 0; 10275ecc953bSthorpej if (unit >= d->d_umax) 10285ecc953bSthorpej d->d_umax = unit + 1; 10295ecc953bSthorpej return (i); 10305ecc953bSthorpej } 10315ecc953bSthorpej 10325ecc953bSthorpej /* 10335ecc953bSthorpej * Add the named device as attaching to the named attribute (or perhaps 10345ecc953bSthorpej * another device instead) plus unit number. 10355ecc953bSthorpej */ 10365ecc953bSthorpej void 103716a8771bSdholland adddev(const char *name, const char *at, struct loclist *loclist, int flags) 10385ecc953bSthorpej { 10395ecc953bSthorpej struct devi *i; /* the new instance */ 10405ecc953bSthorpej struct pspec *p; /* and its pspec */ 10415ecc953bSthorpej struct attr *attr; /* attribute that allows attach */ 10425ecc953bSthorpej struct devbase *ib; /* i->i_base */ 10435ecc953bSthorpej struct devbase *ab; /* not NULL => at another dev */ 10444caf067bSdholland struct attrlist *al; 10455ecc953bSthorpej struct deva *iba; /* devbase attachment used */ 10465ecc953bSthorpej const char *cp; 10475ecc953bSthorpej int atunit; 10485ecc953bSthorpej char atbuf[NAMESIZE]; 10495ecc953bSthorpej int hit; 10505ecc953bSthorpej 10515ecc953bSthorpej ab = NULL; 10525ecc953bSthorpej iba = NULL; 10535ecc953bSthorpej if (at == NULL) { 10545ecc953bSthorpej /* "at root" */ 10555ecc953bSthorpej p = NULL; 10565ecc953bSthorpej if ((i = getdevi(name)) == NULL) 10575ecc953bSthorpej goto bad; 10585ecc953bSthorpej /* 10595ecc953bSthorpej * Must warn about i_unit > 0 later, after taking care of 10605ecc953bSthorpej * the STAR cases (we could do non-star's here but why 10615ecc953bSthorpej * bother?). Make sure this device can be at root. 10625ecc953bSthorpej */ 10635ecc953bSthorpej ib = i->i_base; 10645ecc953bSthorpej hit = 0; 10655ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 10665ecc953bSthorpej if (onlist(iba->d_atlist, NULL)) { 10675ecc953bSthorpej hit = 1; 10685ecc953bSthorpej break; 10695ecc953bSthorpej } 10705ecc953bSthorpej if (!hit) { 1071c7295a4cSchristos cfgerror("`%s' cannot attach to the root", ib->d_name); 10725ec393e9Scube i->i_active = DEVI_BROKEN; 10735ecc953bSthorpej goto bad; 10745ecc953bSthorpej } 10755ecc953bSthorpej attr = &errattr; /* a convenient "empty" attr */ 10765ecc953bSthorpej } else { 10775ecc953bSthorpej if (split(at, strlen(at), atbuf, sizeof atbuf, &atunit)) { 1078c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 10795ecc953bSthorpej /* (void)getdevi(name); -- ??? */ 10805ecc953bSthorpej goto bad; 10815ecc953bSthorpej } 10825ecc953bSthorpej if ((i = getdevi(name)) == NULL) 10835ecc953bSthorpej goto bad; 10845ecc953bSthorpej ib = i->i_base; 10855ecc953bSthorpej 10865ecc953bSthorpej /* 10875ecc953bSthorpej * Devices can attach to two types of things: Attributes, 10885ecc953bSthorpej * and other devices (which have the appropriate attributes 10895ecc953bSthorpej * to allow attachment). 10905ecc953bSthorpej * 10915ecc953bSthorpej * (1) If we're attached to an attribute, then we don't need 10925ecc953bSthorpej * look at the parent base device to see what attributes 10935ecc953bSthorpej * it has, and make sure that we can attach to them. 10945ecc953bSthorpej * 10955ecc953bSthorpej * (2) If we're attached to a real device (i.e. named in 10965ecc953bSthorpej * the config file), we want to remember that so that 10975ecc953bSthorpej * at cross-check time, if the device we're attached to 10985ecc953bSthorpej * is missing but other devices which also provide the 10995ecc953bSthorpej * attribute are present, we don't get a false "OK." 11005ecc953bSthorpej * 11015ecc953bSthorpej * (3) If the thing we're attached to is an attribute 11025ecc953bSthorpej * but is actually named in the config file, we still 11035ecc953bSthorpej * have to remember its devbase. 11045ecc953bSthorpej */ 11055ecc953bSthorpej cp = intern(atbuf); 11065ecc953bSthorpej 11075ecc953bSthorpej /* Figure out parent's devbase, to satisfy case (3). */ 11085ecc953bSthorpej ab = ht_lookup(devbasetab, cp); 11095ecc953bSthorpej 11105ecc953bSthorpej /* Find out if it's an attribute. */ 11115ecc953bSthorpej attr = ht_lookup(attrtab, cp); 11125ecc953bSthorpej 11135ecc953bSthorpej /* Make sure we're _really_ attached to the attr. Case (1). */ 11145ecc953bSthorpej if (attr != NULL && onlist(attr->a_devs, ib)) 11155ecc953bSthorpej goto findattachment; 11165ecc953bSthorpej 11175ecc953bSthorpej /* 11185ecc953bSthorpej * Else a real device, and not just an attribute. Case (2). 11195ecc953bSthorpej * 11205ecc953bSthorpej * Have to work a bit harder to see whether we have 11215ecc953bSthorpej * something like "tg0 at esp0" (where esp is merely 11225ecc953bSthorpej * not an attribute) or "tg0 at nonesuch0" (where 11235ecc953bSthorpej * nonesuch is not even a device). 11245ecc953bSthorpej */ 11255ecc953bSthorpej if (ab == NULL) { 1126c7295a4cSchristos cfgerror("%s at %s: `%s' unknown", 11275ecc953bSthorpej name, at, atbuf); 11285ec393e9Scube i->i_active = DEVI_BROKEN; 11295ecc953bSthorpej goto bad; 11305ecc953bSthorpej } 11315ecc953bSthorpej 11325ecc953bSthorpej /* 11335ecc953bSthorpej * See if the named parent carries an attribute 11345ecc953bSthorpej * that allows it to supervise device ib. 11355ecc953bSthorpej */ 11364caf067bSdholland for (al = ab->d_attrs; al != NULL; al = al->al_next) { 11374caf067bSdholland attr = al->al_this; 11385ecc953bSthorpej if (onlist(attr->a_devs, ib)) 11395ecc953bSthorpej goto findattachment; 11405ecc953bSthorpej } 1141c7295a4cSchristos cfgerror("`%s' cannot attach to `%s'", ib->d_name, atbuf); 11425ec393e9Scube i->i_active = DEVI_BROKEN; 11435ecc953bSthorpej goto bad; 11445ecc953bSthorpej 11455ecc953bSthorpej findattachment: 11465ecc953bSthorpej /* 11475ecc953bSthorpej * Find the parent spec. If a matching one has not yet been 11485ecc953bSthorpej * created, create one. 11495ecc953bSthorpej */ 11505ecc953bSthorpej p = getpspec(attr, ab, atunit); 11515ecc953bSthorpej p->p_devs = newnv(NULL, NULL, i, 0, p->p_devs); 11525ecc953bSthorpej 11535ecc953bSthorpej /* find out which attachment it uses */ 11545ecc953bSthorpej hit = 0; 11555ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 11565ecc953bSthorpej if (onlist(iba->d_atlist, attr)) { 11575ecc953bSthorpej hit = 1; 11585ecc953bSthorpej break; 11595ecc953bSthorpej } 11605ecc953bSthorpej if (!hit) 11615ecc953bSthorpej panic("adddev: can't figure out attachment"); 11625ecc953bSthorpej } 11635ec393e9Scube if ((i->i_locs = fixloc(name, attr, loclist)) == NULL) { 11645ec393e9Scube i->i_active = DEVI_BROKEN; 11655ecc953bSthorpej goto bad; 11665ec393e9Scube } 11675ecc953bSthorpej i->i_at = at; 11685ecc953bSthorpej i->i_pspec = p; 11695ecc953bSthorpej i->i_atdeva = iba; 11705ecc953bSthorpej i->i_cfflags = flags; 11715ecc953bSthorpej 11725ecc953bSthorpej *iba->d_ipp = i; 11735ecc953bSthorpej iba->d_ipp = &i->i_asame; 11745ecc953bSthorpej 11755ecc953bSthorpej /* all done, fall into ... */ 11765ecc953bSthorpej bad: 117716a8771bSdholland loclist_destroy(loclist); 11785ecc953bSthorpej return; 11795ecc953bSthorpej } 11805ecc953bSthorpej 11815ecc953bSthorpej void 11827b7c582aScube deldevi(const char *name, const char *at) 11835ecc953bSthorpej { 11847b7c582aScube struct devi *firsti, *i; 11855ecc953bSthorpej struct devbase *d; 11865ecc953bSthorpej int unit; 11875ecc953bSthorpej char base[NAMESIZE]; 11885ecc953bSthorpej 11895ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1190c7295a4cSchristos cfgerror("invalid device name `%s'", name); 11915ecc953bSthorpej return; 11925ecc953bSthorpej } 11935ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 11945ecc953bSthorpej if (d == NULL) { 1195c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 11965ecc953bSthorpej return; 11975ecc953bSthorpej } 11985ecc953bSthorpej if (d->d_ispseudo) { 1199c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 12005ecc953bSthorpej return; 12015ecc953bSthorpej } 12025ecc953bSthorpej if ((firsti = ht_lookup(devitab, name)) == NULL) { 1203c7295a4cSchristos cfgerror("`%s' not defined", name); 12045ecc953bSthorpej return; 12055ecc953bSthorpej } 12067b7c582aScube if (at == NULL && firsti->i_at == NULL) { 1207e499d8b5Scube /* 'at root' */ 12087b7c582aScube remove_devi(firsti); 12097b7c582aScube return; 12107b7c582aScube } else if (at != NULL) 12117b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 1212bfc250f2Scube if (i->i_active != DEVI_BROKEN && 1213bfc250f2Scube strcmp(at, i->i_at) == 0) { 12147b7c582aScube remove_devi(i); 12155ecc953bSthorpej return; 12165ecc953bSthorpej } 1217c7295a4cSchristos cfgerror("`%s' at `%s' not found", name, at ? at : "root"); 1218e499d8b5Scube } 12195ecc953bSthorpej 12207b7c582aScube static void 12217b7c582aScube remove_devi(struct devi *i) 12227b7c582aScube { 12237b7c582aScube struct devbase *d = i->i_base; 12247b7c582aScube struct devi *f, *j, **ppi; 12257b7c582aScube struct deva *iba; 12267b7c582aScube 12277b7c582aScube f = ht_lookup(devitab, i->i_name); 12286a6299ebScube if (f == NULL) 12296a6299ebScube panic("remove_devi(): instance %s disappeared from devitab", 12306a6299ebScube i->i_name); 12317b7c582aScube 1232bfc250f2Scube if (i->i_active == DEVI_BROKEN) { 1233bfc250f2Scube cfgerror("not removing broken instance `%s'", i->i_name); 1234bfc250f2Scube return; 1235bfc250f2Scube } 1236bfc250f2Scube 1237e499d8b5Scube /* 1238e499d8b5Scube * We have the device instance, i. 1239e499d8b5Scube * We have to: 1240e499d8b5Scube * - delete the alias 1241e499d8b5Scube * 1242e499d8b5Scube * If the devi was an alias of an already listed devi, all is 1243e499d8b5Scube * good we don't have to do more. 1244e499d8b5Scube * If it was the first alias, we have to replace i's entry in 1245e499d8b5Scube * d's list by its first alias. 1246e499d8b5Scube * If it was the only entry, we must remove i's entry from d's 1247e499d8b5Scube * list. 1248e499d8b5Scube */ 12497b7c582aScube if (i != f) { 12507b7c582aScube for (j = f; j->i_alias != i; j = j->i_alias); 12517b7c582aScube j->i_alias = i->i_alias; 12523b405775Scube } else { 12533b405775Scube if (i->i_alias == NULL) { 1254e499d8b5Scube /* No alias, must unlink the entry from devitab */ 12557b7c582aScube ht_remove(devitab, i->i_name); 12567b7c582aScube j = i->i_bsame; 12573b405775Scube } else { 1258e499d8b5Scube /* Or have the first alias replace i in d's list */ 1259e499d8b5Scube i->i_alias->i_bsame = i->i_bsame; 12607b7c582aScube j = i->i_alias; 12617b7c582aScube if (i == f) 12627b7c582aScube ht_replace(devitab, i->i_name, i->i_alias); 12633b405775Scube } 12643b405775Scube 1265e499d8b5Scube /* 1266e499d8b5Scube * - remove/replace the instance from the devbase's list 1267e499d8b5Scube * 1268e499d8b5Scube * A double-linked list would make this much easier. Oh, well, 1269e499d8b5Scube * what is done is done. 1270e499d8b5Scube */ 1271e499d8b5Scube for (ppi = &d->d_ihead; 1272e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_bsame != i; 1273e499d8b5Scube ppi = &(*ppi)->i_bsame); 1274e499d8b5Scube if (*ppi == NULL) 1275c3414672Scube panic("deldev: dev (%s) doesn't list the devi" 1276c3414672Scube " (%s at %s)", d->d_name, i->i_name, i->i_at); 12777b7c582aScube f = *ppi; 12787b7c582aScube if (f == i) 1279c3414672Scube /* That implies d->d_ihead == i */ 12807b7c582aScube *ppi = j; 1281e499d8b5Scube else 12827b7c582aScube (*ppi)->i_bsame = j; 1283e499d8b5Scube if (d->d_ipp == &i->i_bsame) { 12843b405775Scube if (i->i_alias == NULL) { 12857b7c582aScube if (f == i) 1286e499d8b5Scube d->d_ipp = &d->d_ihead; 1287e499d8b5Scube else 12887b7c582aScube d->d_ipp = &f->i_bsame; 12893b405775Scube } else 12903b405775Scube d->d_ipp = &i->i_alias->i_bsame; 1291e499d8b5Scube } 1292e499d8b5Scube } 1293e499d8b5Scube /* 1294e499d8b5Scube * - delete the attachment instance 1295e499d8b5Scube */ 1296e499d8b5Scube iba = i->i_atdeva; 1297e499d8b5Scube for (ppi = &iba->d_ihead; 1298e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_asame != i; 1299e499d8b5Scube ppi = &(*ppi)->i_asame); 1300e499d8b5Scube if (*ppi == NULL) 1301e499d8b5Scube panic("deldev: deva (%s) doesn't list the devi (%s)", 1302e499d8b5Scube iba->d_name, i->i_name); 13037b7c582aScube f = *ppi; 13047b7c582aScube if (f == i) 1305c3414672Scube /* That implies iba->d_ihead == i */ 1306e499d8b5Scube *ppi = i->i_asame; 1307e499d8b5Scube else 1308e499d8b5Scube (*ppi)->i_asame = i->i_asame; 1309e499d8b5Scube if (iba->d_ipp == &i->i_asame) { 13107b7c582aScube if (f == i) 1311e499d8b5Scube iba->d_ipp = &iba->d_ihead; 1312e499d8b5Scube else 13137b7c582aScube iba->d_ipp = &f->i_asame; 1314e499d8b5Scube } 1315e499d8b5Scube /* 1316e499d8b5Scube * - delete the pspec 1317e499d8b5Scube */ 1318e499d8b5Scube if (i->i_pspec) { 1319e499d8b5Scube struct pspec *p = i->i_pspec; 1320e499d8b5Scube struct nvlist *nv, *onv; 1321e499d8b5Scube 1322e499d8b5Scube /* Double-linked nvlist anyone? */ 1323c0024066Scube for (nv = p->p_devs; nv->nv_next != NULL; nv = nv->nv_next) { 1324e499d8b5Scube if (nv->nv_next && nv->nv_next->nv_ptr == i) { 1325e499d8b5Scube onv = nv->nv_next; 1326e499d8b5Scube nv->nv_next = onv->nv_next; 1327e499d8b5Scube nvfree(onv); 1328e499d8b5Scube break; 1329c0024066Scube } 1330c0024066Scube if (nv->nv_ptr == i) { 1331e499d8b5Scube /* nv is p->p_devs in that case */ 1332e499d8b5Scube p->p_devs = nv->nv_next; 1333e499d8b5Scube nvfree(nv); 1334e499d8b5Scube break; 1335e499d8b5Scube } 1336e499d8b5Scube } 1337e499d8b5Scube if (p->p_devs == NULL) 1338e499d8b5Scube TAILQ_REMOVE(&allpspecs, p, p_list); 1339e499d8b5Scube } 1340e499d8b5Scube /* 1341e499d8b5Scube * - delete the alldevi entry 1342e499d8b5Scube */ 1343e499d8b5Scube TAILQ_REMOVE(&alldevi, i, i_next); 1344e499d8b5Scube ndevi--; 13457aa6070dScube /* 13467aa6070dScube * Put it in deaddevitab 1347a31ff6b4Scube * 1348a31ff6b4Scube * Each time a devi is removed, devilevel is increased so that later on 1349a31ff6b4Scube * it is possible to tell if an instance was added before or after the 1350a31ff6b4Scube * removal of its parent. 1351a31ff6b4Scube * 1352a31ff6b4Scube * For active instances, i_level contains the number of devi removed so 1353a31ff6b4Scube * far, and for dead devis, it contains its index. 13547aa6070dScube */ 1355a31ff6b4Scube i->i_level = devilevel++; 13567aa6070dScube i->i_alias = NULL; 13577aa6070dScube f = ht_lookup(deaddevitab, i->i_name); 13587aa6070dScube if (f == NULL) { 13597aa6070dScube if (ht_insert(deaddevitab, i->i_name, i)) 13607aa6070dScube panic("remove_devi(%s) - can't add to deaddevitab", 13617aa6070dScube i->i_name); 13627aa6070dScube } else { 13637aa6070dScube for (j = f; j->i_alias != NULL; j = j->i_alias); 13647aa6070dScube j->i_alias = i; 13657aa6070dScube } 1366e499d8b5Scube /* 13675d1e8b27Swiz * - reconstruct d->d_umax 1368e499d8b5Scube */ 1369e499d8b5Scube d->d_umax = 0; 1370e499d8b5Scube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 1371e499d8b5Scube if (i->i_unit >= d->d_umax) 1372e499d8b5Scube d->d_umax = i->i_unit + 1; 13735ecc953bSthorpej } 13745ecc953bSthorpej 13755ecc953bSthorpej void 13767b7c582aScube deldeva(const char *at) 13777b7c582aScube { 13787b7c582aScube int unit; 13797b7c582aScube const char *cp; 13807b7c582aScube struct devbase *d, *ad; 13817b7c582aScube struct devi *i, *j; 13827b7c582aScube struct attr *a; 13837b7c582aScube struct pspec *p; 13847b7c582aScube struct nvlist *nv, *stack = NULL; 13857b7c582aScube 13867b7c582aScube if (at == NULL) { 13877b7c582aScube TAILQ_FOREACH(i, &alldevi, i_next) 13887b7c582aScube if (i->i_at == NULL) 13897b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 13907b7c582aScube } else { 13917b7c582aScube int l; 13927b7c582aScube 13937b7c582aScube l = strlen(at) - 1; 13947b7c582aScube if (at[l] == '?' || isdigit((unsigned char)at[l])) { 13957b7c582aScube char base[NAMESIZE]; 13967b7c582aScube 13977b7c582aScube if (split(at, l+1, base, sizeof base, &unit)) { 1398c7295a4cSchristos cfgerror("invalid attachment name `%s'", at); 13997b7c582aScube return; 14007b7c582aScube } 14017b7c582aScube cp = intern(base); 14027b7c582aScube } else { 14037b7c582aScube cp = intern(at); 14047b7c582aScube unit = STAR; 14057b7c582aScube } 14067b7c582aScube 14077b7c582aScube ad = ht_lookup(devbasetab, cp); 14087b7c582aScube a = ht_lookup(attrtab, cp); 14097b7c582aScube if (a == NULL) { 1410c7295a4cSchristos cfgerror("unknown attachment attribute or device `%s'", 14117b7c582aScube cp); 14127b7c582aScube return; 14137b7c582aScube } 14147b7c582aScube if (!a->a_iattr) { 1415c7295a4cSchristos cfgerror("plain attribute `%s' cannot have children", 14167b7c582aScube a->a_name); 14177b7c582aScube return; 14187b7c582aScube } 14197b7c582aScube 14207b7c582aScube /* 14217b7c582aScube * remove_devi() makes changes to the devbase's list and the 14227b7c582aScube * alias list, * so the actual deletion of the instances must 14237b7c582aScube * be delayed. 14247b7c582aScube */ 14257b7c582aScube for (nv = a->a_devs; nv != NULL; nv = nv->nv_next) { 14267b7c582aScube d = nv->nv_ptr; 14277b7c582aScube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 14287b7c582aScube for (j = i; j != NULL; j = j->i_alias) { 14297b7c582aScube /* Ignore devices at root */ 14307b7c582aScube if (j->i_at == NULL) 14317b7c582aScube continue; 14327b7c582aScube p = j->i_pspec; 14337b7c582aScube /* 14347b7c582aScube * There are three cases: 14357b7c582aScube * 14367b7c582aScube * 1. unit is not STAR. Consider 'at' 14377b7c582aScube * to be explicit, even if it 14387b7c582aScube * references an interface 14397b7c582aScube * attribute. 14407b7c582aScube * 14417b7c582aScube * 2. unit is STAR and 'at' references 14427b7c582aScube * a real device. Look for pspec 14437b7c582aScube * that have a matching p_atdev 14447b7c582aScube * field. 14457b7c582aScube * 14467b7c582aScube * 3. unit is STAR and 'at' references 14477b7c582aScube * an interface attribute. Look 14487b7c582aScube * for pspec that have a matching 14497b7c582aScube * p_iattr field. 14507b7c582aScube */ 14517b7c582aScube if ((unit != STAR && /* Case */ 14527b7c582aScube !strcmp(j->i_at, at)) || /* 1 */ 14537b7c582aScube (unit == STAR && 14547b7c582aScube ((ad != NULL && /* Case */ 14557b7c582aScube p->p_atdev == ad) || /* 2 */ 14567b7c582aScube (ad == NULL && /* Case */ 14577b7c582aScube p->p_iattr == a)))) /* 3 */ 14587b7c582aScube stack = newnv(NULL, NULL, j, 0, 14597b7c582aScube stack); 14607b7c582aScube } 14617b7c582aScube } 14627b7c582aScube } 14637b7c582aScube 14647b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 14657b7c582aScube remove_devi(nv->nv_ptr); 1466e50e4ee4Scube nvfreel(stack); 14677b7c582aScube } 14687b7c582aScube 14697b7c582aScube void 14707b7c582aScube deldev(const char *name) 14717b7c582aScube { 14727b7c582aScube int l; 14737b7c582aScube struct devi *firsti, *i; 14747b7c582aScube struct nvlist *nv, *stack = NULL; 14757b7c582aScube 14767b7c582aScube l = strlen(name) - 1; 14777b7c582aScube if (name[l] == '*' || isdigit((unsigned char)name[l])) { 14787b7c582aScube /* `no mydev0' or `no mydev*' */ 14797b7c582aScube firsti = ht_lookup(devitab, name); 14807b7c582aScube if (firsti == NULL) { 1481c7295a4cSchristos cfgerror("unknown instance %s", name); 14827b7c582aScube return; 14837b7c582aScube } 14847b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 14857b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 14867b7c582aScube } else { 14877b7c582aScube struct devbase *d = ht_lookup(devbasetab, name); 14887b7c582aScube 14897b7c582aScube if (d == NULL) { 1490c7295a4cSchristos cfgerror("unknown device %s", name); 14917b7c582aScube return; 14927b7c582aScube } 149371af9028Scube if (d->d_ispseudo) { 1494c7295a4cSchristos cfgerror("%s is a pseudo-device; " 149571af9028Scube "use \"no pseudo-device %s\" instead", name, 149671af9028Scube name); 149771af9028Scube return; 149871af9028Scube } 14997b7c582aScube 15007b7c582aScube for (firsti = d->d_ihead; firsti != NULL; 15017b7c582aScube firsti = firsti->i_bsame) 15027b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 15037b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 15047b7c582aScube } 15057b7c582aScube 15067b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 15077b7c582aScube remove_devi(nv->nv_ptr); 1508e50e4ee4Scube nvfreel(stack); 15097b7c582aScube } 15107b7c582aScube 151100ed8a38Spooka /* 151200ed8a38Spooka * Insert given device "name" into devroottab. In case "name" 151300ed8a38Spooka * designates a pure interface attribute, create a fake device 151400ed8a38Spooka * instance for the attribute and insert that into the roottab 151500ed8a38Spooka * (this scheme avoids mucking around with the orphanage analysis). 151600ed8a38Spooka */ 15177b7c582aScube void 151890ac64deSpooka addpseudoroot(const char *name) 151990ac64deSpooka { 1520194e1c80Spooka char buf[NAMESIZE]; 1521194e1c80Spooka int unit; 1522194e1c80Spooka struct attr *attr; 152390ac64deSpooka struct devi *i; 152490ac64deSpooka struct deva *iba; 152590ac64deSpooka struct devbase *ib; 152690ac64deSpooka 1527194e1c80Spooka if (split(name, strlen(name), buf, sizeof(buf), &unit)) { 1528194e1c80Spooka cfgerror("invalid pseudo-root name `%s'", name); 1529194e1c80Spooka return; 1530194e1c80Spooka } 1531194e1c80Spooka 1532194e1c80Spooka /* 153300ed8a38Spooka * Prefer device because devices with locators define an 153400ed8a38Spooka * implicit interface attribute. However, if a device is 153500ed8a38Spooka * not available, try to attach to the interface attribute. 153600ed8a38Spooka * This makes sure adddev() doesn't get confused when we 153700ed8a38Spooka * are really attaching to a device (alternatively we maybe 153800ed8a38Spooka * could specify a non-NULL atlist to defdevattach() below). 1539194e1c80Spooka */ 154000ed8a38Spooka ib = ht_lookup(devbasetab, intern(buf)); 154100ed8a38Spooka if (ib == NULL) { 1542194e1c80Spooka struct devbase *fakedev; 1543194e1c80Spooka char fakename[NAMESIZE]; 1544194e1c80Spooka 154500ed8a38Spooka attr = ht_lookup(attrtab, intern(buf)); 154600ed8a38Spooka if (!(attr && attr->a_iattr)) { 154700ed8a38Spooka cfgerror("pseudo-root `%s' not available", name); 154800ed8a38Spooka return; 154900ed8a38Spooka } 155000ed8a38Spooka 1551194e1c80Spooka /* 1552194e1c80Spooka * here we cheat a bit: create a fake devbase with the 1553194e1c80Spooka * interface attribute and instantiate it. quick, cheap, 1554194e1c80Spooka * dirty & bad for you, much like the stuff in the fridge. 1555194e1c80Spooka * and, it works, since the pseudoroot device is not included 1556194e1c80Spooka * in ioconf, just used by config to make sure we start from 1557194e1c80Spooka * the right place. 1558194e1c80Spooka */ 155900ed8a38Spooka snprintf(fakename, sizeof(fakename), "%s_devattrs", buf); 1560194e1c80Spooka fakedev = getdevbase(intern(fakename)); 1561194e1c80Spooka fakedev->d_isdef = 1; 1562194e1c80Spooka fakedev->d_ispseudo = 0; 15634caf067bSdholland fakedev->d_attrs = attrlist_cons(NULL, attr); 1564194e1c80Spooka defdevattach(NULL, fakedev, NULL, NULL); 1565194e1c80Spooka 1566194e1c80Spooka if (unit == STAR) 1567194e1c80Spooka snprintf(buf, sizeof(buf), "%s*", fakename); 1568194e1c80Spooka else 1569194e1c80Spooka snprintf(buf, sizeof(buf), "%s%d", fakename, unit); 1570194e1c80Spooka name = buf; 1571194e1c80Spooka } 1572194e1c80Spooka 1573194e1c80Spooka /* ok, everything should be set up, so instantiate a fake device */ 157490ac64deSpooka i = getdevi(name); 157590ac64deSpooka if (i == NULL) 157600ed8a38Spooka panic("device `%s' expected to be present", name); 157790ac64deSpooka ib = i->i_base; 1578194e1c80Spooka iba = ib->d_ahead; 157990ac64deSpooka 158090ac64deSpooka i->i_atdeva = iba; 158190ac64deSpooka i->i_cfflags = 0; 158290ac64deSpooka i->i_locs = fixloc(name, &errattr, NULL); 158390ac64deSpooka i->i_pseudoroot = 1; 158490ac64deSpooka i->i_active = DEVI_ORPHAN; /* set active by kill_orphans() */ 158590ac64deSpooka 158690ac64deSpooka *iba->d_ipp = i; 158790ac64deSpooka iba->d_ipp = &i->i_asame; 158890ac64deSpooka 158990ac64deSpooka ht_insert(devroottab, ib->d_name, ib); 159090ac64deSpooka } 159190ac64deSpooka 159290ac64deSpooka void 15935ecc953bSthorpej addpseudo(const char *name, int number) 15945ecc953bSthorpej { 15955ecc953bSthorpej struct devbase *d; 15965ecc953bSthorpej struct devi *i; 15975ecc953bSthorpej 15985ecc953bSthorpej d = ht_lookup(devbasetab, name); 15995ecc953bSthorpej if (d == NULL) { 1600c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16015ecc953bSthorpej return; 16025ecc953bSthorpej } 16035ecc953bSthorpej if (!d->d_ispseudo) { 1604c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 16055ecc953bSthorpej return; 16065ecc953bSthorpej } 16075ecc953bSthorpej if (ht_lookup(devitab, name) != NULL) { 1608c7295a4cSchristos cfgerror("`%s' already defined", name); 16095ecc953bSthorpej return; 16105ecc953bSthorpej } 16115ecc953bSthorpej i = newdevi(name, number - 1, d); /* foo 16 => "foo0..foo15" */ 16125ecc953bSthorpej if (ht_insert(devitab, name, i)) 16135ecc953bSthorpej panic("addpseudo(%s)", name); 16147b7c582aScube /* Useful to retrieve the instance from the devbase */ 16157b7c582aScube d->d_ihead = i; 16167aa6070dScube i->i_active = DEVI_ACTIVE; 16175ecc953bSthorpej TAILQ_INSERT_TAIL(&allpseudo, i, i_next); 16185ecc953bSthorpej } 16195ecc953bSthorpej 16205ecc953bSthorpej void 16215ecc953bSthorpej delpseudo(const char *name) 16225ecc953bSthorpej { 16235ecc953bSthorpej struct devbase *d; 16245ecc953bSthorpej struct devi *i; 16255ecc953bSthorpej 16265ecc953bSthorpej d = ht_lookup(devbasetab, name); 16275ecc953bSthorpej if (d == NULL) { 1628c7295a4cSchristos cfgerror("undefined pseudo-device %s", name); 16295ecc953bSthorpej return; 16305ecc953bSthorpej } 16315ecc953bSthorpej if (!d->d_ispseudo) { 1632c7295a4cSchristos cfgerror("%s is a real device, not a pseudo-device", name); 16335ecc953bSthorpej return; 16345ecc953bSthorpej } 16355ecc953bSthorpej if ((i = ht_lookup(devitab, name)) == NULL) { 1636c7295a4cSchristos cfgerror("`%s' not defined", name); 16375ecc953bSthorpej return; 16385ecc953bSthorpej } 16395ecc953bSthorpej d->d_umax = 0; /* clear neads-count entries */ 16407aa6070dScube d->d_ihead = NULL; /* make sure it won't be considered active */ 16415ecc953bSthorpej TAILQ_REMOVE(&allpseudo, i, i_next); 16425ecc953bSthorpej if (ht_remove(devitab, name)) 16435ecc953bSthorpej panic("delpseudo(%s) - can't remove from devitab", name); 16447aa6070dScube if (ht_insert(deaddevitab, name, i)) 16457aa6070dScube panic("delpseudo(%s) - can't add to deaddevitab", name); 16465ecc953bSthorpej } 16475ecc953bSthorpej 16485ecc953bSthorpej void 1649d767912bSdrochner adddevm(const char *name, devmajor_t cmajor, devmajor_t bmajor, 16509483bda7Sdholland struct condexpr *cond, struct nvlist *nv_nodes) 16515ecc953bSthorpej { 16525ecc953bSthorpej struct devm *dm; 16535ecc953bSthorpej 1654d767912bSdrochner if (cmajor != NODEVMAJOR && (cmajor < 0 || cmajor >= 4096)) { 1655c7295a4cSchristos cfgerror("character major %d is invalid", cmajor); 16569483bda7Sdholland condexpr_destroy(cond); 16573da3ab25Spooka nvfreel(nv_nodes); 16585ecc953bSthorpej return; 16595ecc953bSthorpej } 16605ecc953bSthorpej 1661d767912bSdrochner if (bmajor != NODEVMAJOR && (bmajor < 0 || bmajor >= 4096)) { 1662c7295a4cSchristos cfgerror("block major %d is invalid", bmajor); 16639483bda7Sdholland condexpr_destroy(cond); 16643da3ab25Spooka nvfreel(nv_nodes); 16655ecc953bSthorpej return; 16665ecc953bSthorpej } 1667d767912bSdrochner if (cmajor == NODEVMAJOR && bmajor == NODEVMAJOR) { 1668c7295a4cSchristos cfgerror("both character/block majors are not specified"); 16699483bda7Sdholland condexpr_destroy(cond); 16703da3ab25Spooka nvfreel(nv_nodes); 16715ecc953bSthorpej return; 16725ecc953bSthorpej } 16735ecc953bSthorpej 16745ecc953bSthorpej dm = ecalloc(1, sizeof(*dm)); 16755ecc953bSthorpej dm->dm_srcfile = yyfile; 16765ecc953bSthorpej dm->dm_srcline = currentline(); 16775ecc953bSthorpej dm->dm_name = name; 16785ecc953bSthorpej dm->dm_cmajor = cmajor; 16795ecc953bSthorpej dm->dm_bmajor = bmajor; 16809483bda7Sdholland dm->dm_opts = cond; 16813da3ab25Spooka dm->dm_devnodes = nv_nodes; 16825ecc953bSthorpej 16835ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevms, dm, dm_next); 16845ecc953bSthorpej 16855ecc953bSthorpej maxcdevm = MAX(maxcdevm, dm->dm_cmajor); 16865ecc953bSthorpej maxbdevm = MAX(maxbdevm, dm->dm_bmajor); 16875ecc953bSthorpej } 16885ecc953bSthorpej 16897aa6070dScube int 16905ecc953bSthorpej fixdevis(void) 16915ecc953bSthorpej { 16925ecc953bSthorpej struct devi *i; 16937aa6070dScube int error = 0; 16945ecc953bSthorpej 16955ecc953bSthorpej TAILQ_FOREACH(i, &alldevi, i_next) 16967aa6070dScube if (i->i_active == DEVI_ACTIVE) 16975ecc953bSthorpej selectbase(i->i_base, i->i_atdeva); 16987aa6070dScube else if (i->i_active == DEVI_ORPHAN) { 1699c130d400Scube /* 1700c130d400Scube * At this point, we can't have instances for which 1701c130d400Scube * i_at or i_pspec are NULL. 1702c130d400Scube */ 17037aa6070dScube ++error; 1704c7295a4cSchristos cfgxerror(i->i_srcfile, i->i_lineno, 17050dbd1c0eScube "`%s at %s' is orphaned (%s `%s' found)", 1706c130d400Scube i->i_name, i->i_at, i->i_pspec->p_atunit == WILD ? 1707c130d400Scube "nothing matching" : "no", i->i_at); 17087aa6070dScube } else if (vflag && i->i_active == DEVI_IGNORED) 1709c7295a4cSchristos cfgxwarn(i->i_srcfile, i->i_lineno, "ignoring " 1710c7295a4cSchristos "explicitly orphaned instance `%s at %s'", 1711c7295a4cSchristos i->i_name, i->i_at); 17127aa6070dScube 17137aa6070dScube if (error) 17147aa6070dScube return error; 17155ecc953bSthorpej 17165ecc953bSthorpej TAILQ_FOREACH(i, &allpseudo, i_next) 17177aa6070dScube if (i->i_active == DEVI_ACTIVE) 17185ecc953bSthorpej selectbase(i->i_base, NULL); 17197aa6070dScube return 0; 17205ecc953bSthorpej } 17215ecc953bSthorpej 17225ecc953bSthorpej /* 17235ecc953bSthorpej * Look up a parent spec, creating a new one if it does not exist. 17245ecc953bSthorpej */ 17255ecc953bSthorpej static struct pspec * 17265ecc953bSthorpej getpspec(struct attr *attr, struct devbase *ab, int atunit) 17275ecc953bSthorpej { 17285ecc953bSthorpej struct pspec *p; 17295ecc953bSthorpej 17305ecc953bSthorpej TAILQ_FOREACH(p, &allpspecs, p_list) { 17315ecc953bSthorpej if (p->p_iattr == attr && 17325ecc953bSthorpej p->p_atdev == ab && 17335ecc953bSthorpej p->p_atunit == atunit) 17345ecc953bSthorpej return (p); 17355ecc953bSthorpej } 17365ecc953bSthorpej 17375ecc953bSthorpej p = ecalloc(1, sizeof(*p)); 17385ecc953bSthorpej 17395ecc953bSthorpej p->p_iattr = attr; 17405ecc953bSthorpej p->p_atdev = ab; 17415ecc953bSthorpej p->p_atunit = atunit; 17425ecc953bSthorpej p->p_inst = npspecs++; 1743c130d400Scube p->p_active = 0; 17445ecc953bSthorpej 17455ecc953bSthorpej TAILQ_INSERT_TAIL(&allpspecs, p, p_list); 17465ecc953bSthorpej 17475ecc953bSthorpej return (p); 17485ecc953bSthorpej } 17495ecc953bSthorpej 17505ecc953bSthorpej /* 17515ecc953bSthorpej * Define a new instance of a specific device. 17525ecc953bSthorpej */ 17535ecc953bSthorpej static struct devi * 17545ecc953bSthorpej getdevi(const char *name) 17555ecc953bSthorpej { 17565ecc953bSthorpej struct devi *i, *firsti; 17575ecc953bSthorpej struct devbase *d; 17585ecc953bSthorpej int unit; 17595ecc953bSthorpej char base[NAMESIZE]; 17605ecc953bSthorpej 17615ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 1762c7295a4cSchristos cfgerror("invalid device name `%s'", name); 17635ecc953bSthorpej return (NULL); 17645ecc953bSthorpej } 17655ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 17665ecc953bSthorpej if (d == NULL) { 1767c7295a4cSchristos cfgerror("%s: unknown device `%s'", name, base); 17685ecc953bSthorpej return (NULL); 17695ecc953bSthorpej } 17705ecc953bSthorpej if (d->d_ispseudo) { 1771c7295a4cSchristos cfgerror("%s: %s is a pseudo-device", name, base); 17725ecc953bSthorpej return (NULL); 17735ecc953bSthorpej } 17745ecc953bSthorpej firsti = ht_lookup(devitab, name); 17755ecc953bSthorpej i = newdevi(name, unit, d); 17765ecc953bSthorpej if (firsti == NULL) { 17775ecc953bSthorpej if (ht_insert(devitab, name, i)) 17785ecc953bSthorpej panic("getdevi(%s)", name); 17795ecc953bSthorpej *d->d_ipp = i; 17805ecc953bSthorpej d->d_ipp = &i->i_bsame; 17815ecc953bSthorpej } else { 17825ecc953bSthorpej while (firsti->i_alias) 17835ecc953bSthorpej firsti = firsti->i_alias; 17845ecc953bSthorpej firsti->i_alias = i; 17855ecc953bSthorpej } 17865ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevi, i, i_next); 17875ecc953bSthorpej ndevi++; 17885ecc953bSthorpej return (i); 17895ecc953bSthorpej } 17905ecc953bSthorpej 17915ecc953bSthorpej static const char * 17925ecc953bSthorpej concat(const char *name, int c) 17935ecc953bSthorpej { 1794c7295a4cSchristos size_t len; 17955ecc953bSthorpej char buf[NAMESIZE]; 17965ecc953bSthorpej 17975ecc953bSthorpej len = strlen(name); 17985ecc953bSthorpej if (len + 2 > sizeof(buf)) { 1799c7295a4cSchristos cfgerror("device name `%s%c' too long", name, c); 18005ecc953bSthorpej len = sizeof(buf) - 2; 18015ecc953bSthorpej } 18025ecc953bSthorpej memmove(buf, name, len); 18035ecc953bSthorpej buf[len] = c; 18045ecc953bSthorpej buf[len + 1] = 0; 18055ecc953bSthorpej return (intern(buf)); 18065ecc953bSthorpej } 18075ecc953bSthorpej 18085ecc953bSthorpej const char * 18095ecc953bSthorpej starref(const char *name) 18105ecc953bSthorpej { 18115ecc953bSthorpej 18125ecc953bSthorpej return (concat(name, '*')); 18135ecc953bSthorpej } 18145ecc953bSthorpej 18155ecc953bSthorpej const char * 18165ecc953bSthorpej wildref(const char *name) 18175ecc953bSthorpej { 18185ecc953bSthorpej 18195ecc953bSthorpej return (concat(name, '?')); 18205ecc953bSthorpej } 18215ecc953bSthorpej 18225ecc953bSthorpej /* 18235ecc953bSthorpej * Split a name like "foo0" into base name (foo) and unit number (0). 18245ecc953bSthorpej * Return 0 on success. To make this useful for names like "foo0a", 18255ecc953bSthorpej * the length of the "foo0" part is one of the arguments. 18265ecc953bSthorpej */ 18275ecc953bSthorpej static int 18285ecc953bSthorpej split(const char *name, size_t nlen, char *base, size_t bsize, int *aunit) 18295ecc953bSthorpej { 18305ecc953bSthorpej const char *cp; 1831c7295a4cSchristos int c; 1832c7295a4cSchristos size_t l; 18335ecc953bSthorpej 18345ecc953bSthorpej l = nlen; 18355ecc953bSthorpej if (l < 2 || l >= bsize || isdigit((unsigned char)*name)) 18365ecc953bSthorpej return (1); 18375ecc953bSthorpej c = (u_char)name[--l]; 18385ecc953bSthorpej if (!isdigit(c)) { 18395ecc953bSthorpej if (c == '*') 18405ecc953bSthorpej *aunit = STAR; 18415ecc953bSthorpej else if (c == '?') 18425ecc953bSthorpej *aunit = WILD; 18435ecc953bSthorpej else 18445ecc953bSthorpej return (1); 18455ecc953bSthorpej } else { 18465ecc953bSthorpej cp = &name[l]; 18475ecc953bSthorpej while (isdigit((unsigned char)cp[-1])) 18485ecc953bSthorpej l--, cp--; 18495ecc953bSthorpej *aunit = atoi(cp); 18505ecc953bSthorpej } 18515ecc953bSthorpej memmove(base, name, l); 18525ecc953bSthorpej base[l] = 0; 18535ecc953bSthorpej return (0); 18545ecc953bSthorpej } 18555ecc953bSthorpej 18565ecc953bSthorpej void 18575ecc953bSthorpej selectattr(struct attr *a) 18585ecc953bSthorpej { 18595ecc953bSthorpej 1860c7295a4cSchristos (void)ht_insert(selecttab, a->a_name, __UNCONST(a->a_name)); 1861b599bf99Suebayasi CFGDBG(3, "attr selected `%s'", a->a_name); 18625ecc953bSthorpej } 18635ecc953bSthorpej 18645ecc953bSthorpej /* 18655ecc953bSthorpej * We have an instance of the base foo, so select it and all its 18665ecc953bSthorpej * attributes for "optional foo". 18675ecc953bSthorpej */ 18685ecc953bSthorpej static void 18695ecc953bSthorpej selectbase(struct devbase *d, struct deva *da) 18705ecc953bSthorpej { 18715ecc953bSthorpej struct attr *a; 18724caf067bSdholland struct attrlist *al; 18735ecc953bSthorpej 1874c7295a4cSchristos (void)ht_insert(selecttab, d->d_name, __UNCONST(d->d_name)); 1875b599bf99Suebayasi CFGDBG(3, "devbase selected `%s'", d->d_name); 18764caf067bSdholland for (al = d->d_attrs; al != NULL; al = al->al_next) { 18774caf067bSdholland a = al->al_this; 18785ecc953bSthorpej expandattr(a, selectattr); 18795ecc953bSthorpej } 18805ecc953bSthorpej if (da != NULL) { 1881c7295a4cSchristos (void)ht_insert(selecttab, da->d_name, __UNCONST(da->d_name)); 1882b599bf99Suebayasi CFGDBG(3, "devattr selected `%s'", da->d_name); 18834caf067bSdholland for (al = da->d_attrs; al != NULL; al = al->al_next) { 18844caf067bSdholland a = al->al_this; 18855ecc953bSthorpej expandattr(a, selectattr); 18865ecc953bSthorpej } 18875ecc953bSthorpej } 18885ecc953bSthorpej } 18895ecc953bSthorpej 18905ecc953bSthorpej /* 18915ecc953bSthorpej * Is the given pointer on the given list of pointers? 18925ecc953bSthorpej */ 189359c94545Scube int 18945ecc953bSthorpej onlist(struct nvlist *nv, void *ptr) 18955ecc953bSthorpej { 18965ecc953bSthorpej for (; nv != NULL; nv = nv->nv_next) 18975ecc953bSthorpej if (nv->nv_ptr == ptr) 18985ecc953bSthorpej return (1); 18995ecc953bSthorpej return (0); 19005ecc953bSthorpej } 19015ecc953bSthorpej 19025ecc953bSthorpej static char * 19035ecc953bSthorpej extend(char *p, const char *name) 19045ecc953bSthorpej { 1905c7295a4cSchristos size_t l; 19065ecc953bSthorpej 19075ecc953bSthorpej l = strlen(name); 19085ecc953bSthorpej memmove(p, name, l); 19095ecc953bSthorpej p += l; 19105ecc953bSthorpej *p++ = ','; 19115ecc953bSthorpej *p++ = ' '; 19125ecc953bSthorpej return (p); 19135ecc953bSthorpej } 19145ecc953bSthorpej 19155ecc953bSthorpej /* 19165ecc953bSthorpej * Check that we got all required locators, and default any that are 19175ecc953bSthorpej * given as "?" and have defaults. Return 0 on success. 19185ecc953bSthorpej */ 19195ecc953bSthorpej static const char ** 192016a8771bSdholland fixloc(const char *name, struct attr *attr, struct loclist *got) 19215ecc953bSthorpej { 192216a8771bSdholland struct loclist *m, *n; 19235ecc953bSthorpej int ord; 19245ecc953bSthorpej const char **lp; 19255ecc953bSthorpej int nmissing, nextra, nnodefault; 19265ecc953bSthorpej char *mp, *ep, *ndp; 19275ecc953bSthorpej char missing[1000], extra[1000], nodefault[1000]; 19285ecc953bSthorpej static const char *nullvec[1]; 19295ecc953bSthorpej 19305ecc953bSthorpej /* 19315ecc953bSthorpej * Look for all required locators, and number the given ones 19325ecc953bSthorpej * according to the required order. While we are numbering, 19335ecc953bSthorpej * set default values for defaulted locators. 19345ecc953bSthorpej */ 19355ecc953bSthorpej if (attr->a_loclen == 0) /* e.g., "at root" */ 19365ecc953bSthorpej lp = nullvec; 19375ecc953bSthorpej else 19385ecc953bSthorpej lp = emalloc((attr->a_loclen + 1) * sizeof(const char *)); 193916a8771bSdholland for (n = got; n != NULL; n = n->ll_next) 194016a8771bSdholland n->ll_num = -1; 19415ecc953bSthorpej nmissing = 0; 19425ecc953bSthorpej mp = missing; 19435ecc953bSthorpej /* yes, this is O(mn), but m and n should be small */ 194416a8771bSdholland for (ord = 0, m = attr->a_locs; m != NULL; m = m->ll_next, ord++) { 194516a8771bSdholland for (n = got; n != NULL; n = n->ll_next) { 194616a8771bSdholland if (n->ll_name == m->ll_name) { 194716a8771bSdholland n->ll_num = ord; 19485ecc953bSthorpej break; 19495ecc953bSthorpej } 19505ecc953bSthorpej } 195116a8771bSdholland if (n == NULL && m->ll_num == 0) { 19525ecc953bSthorpej nmissing++; 195316a8771bSdholland mp = extend(mp, m->ll_name); 19545ecc953bSthorpej } 195516a8771bSdholland lp[ord] = m->ll_string; 19565ecc953bSthorpej } 19575ecc953bSthorpej if (ord != attr->a_loclen) 19585ecc953bSthorpej panic("fixloc"); 19595ecc953bSthorpej lp[ord] = NULL; 19605ecc953bSthorpej nextra = 0; 19615ecc953bSthorpej ep = extra; 19625ecc953bSthorpej nnodefault = 0; 19635ecc953bSthorpej ndp = nodefault; 196416a8771bSdholland for (n = got; n != NULL; n = n->ll_next) { 196516a8771bSdholland if (n->ll_num >= 0) { 196616a8771bSdholland if (n->ll_string != NULL) 196716a8771bSdholland lp[n->ll_num] = n->ll_string; 196816a8771bSdholland else if (lp[n->ll_num] == NULL) { 19695ecc953bSthorpej nnodefault++; 197016a8771bSdholland ndp = extend(ndp, n->ll_name); 19715ecc953bSthorpej } 19725ecc953bSthorpej } else { 19735ecc953bSthorpej nextra++; 197416a8771bSdholland ep = extend(ep, n->ll_name); 19755ecc953bSthorpej } 19765ecc953bSthorpej } 19775ecc953bSthorpej if (nextra) { 19785ecc953bSthorpej ep[-2] = 0; /* kill ", " */ 1979c7295a4cSchristos cfgerror("%s: extraneous locator%s: %s", 19805ecc953bSthorpej name, nextra > 1 ? "s" : "", extra); 19815ecc953bSthorpej } 19825ecc953bSthorpej if (nmissing) { 19835ecc953bSthorpej mp[-2] = 0; 1984c7295a4cSchristos cfgerror("%s: must specify %s", name, missing); 19855ecc953bSthorpej } 19865ecc953bSthorpej if (nnodefault) { 19875ecc953bSthorpej ndp[-2] = 0; 1988c7295a4cSchristos cfgerror("%s: cannot wildcard %s", name, nodefault); 19895ecc953bSthorpej } 19905ecc953bSthorpej if (nmissing || nnodefault) { 19915ecc953bSthorpej free(lp); 19925ecc953bSthorpej lp = NULL; 19935ecc953bSthorpej } 19945ecc953bSthorpej return (lp); 19955ecc953bSthorpej } 1996437f8925Scube 1997437f8925Scube void 1998437f8925Scube setversion(int newver) 1999437f8925Scube { 2000437f8925Scube if (newver > CONFIG_VERSION) 2001c7295a4cSchristos cfgerror("your sources require a newer version of config(1) " 2002437f8925Scube "-- please rebuild it."); 2003437f8925Scube else if (newver < CONFIG_MINVERSION) 2004c7295a4cSchristos cfgerror("your sources are out of date -- please update."); 2005437f8925Scube else 2006437f8925Scube version = newver; 2007437f8925Scube } 2008