1*bbfbbde1Schristos /* $NetBSD: sem.c,v 1.25 2006/11/09 20:42:45 christos 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 */ 685ecc953bSthorpej 695ecc953bSthorpej static struct attr errattr; 705ecc953bSthorpej static struct devbase errdev; 715ecc953bSthorpej static struct deva errdeva; 725ecc953bSthorpej 735ecc953bSthorpej static int has_errobj(struct nvlist *, void *); 745ecc953bSthorpej static struct nvlist *addtoattr(struct nvlist *, struct devbase *); 755ecc953bSthorpej static int resolve(struct nvlist **, const char *, const char *, 765ecc953bSthorpej struct nvlist *, int); 775ecc953bSthorpej static struct pspec *getpspec(struct attr *, struct devbase *, int); 785ecc953bSthorpej static struct devi *newdevi(const char *, int, struct devbase *d); 795ecc953bSthorpej static struct devi *getdevi(const char *); 80c130d400Scube static void remove_devi(struct devi *); 815ecc953bSthorpej static const char *concat(const char *, int); 825ecc953bSthorpej static char *extend(char *, const char *); 835ecc953bSthorpej static int split(const char *, size_t, char *, size_t, int *); 845ecc953bSthorpej static void selectbase(struct devbase *, struct deva *); 855ecc953bSthorpej static int onlist(struct nvlist *, void *); 865ecc953bSthorpej static const char **fixloc(const char *, struct attr *, struct nvlist *); 875ecc953bSthorpej static const char *makedevstr(int, int); 885ecc953bSthorpej static const char *major2name(int); 895ecc953bSthorpej static int 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(); 995ecc953bSthorpej errattr.a_name = "<internal>"; 1005ecc953bSthorpej 1015ecc953bSthorpej TAILQ_INIT(&allbases); 1025ecc953bSthorpej 1035ecc953bSthorpej TAILQ_INIT(&alldevas); 1045ecc953bSthorpej 1055ecc953bSthorpej TAILQ_INIT(&allpspecs); 1065ecc953bSthorpej 1075ecc953bSthorpej cfhashtab = ht_new(); 1085ecc953bSthorpej TAILQ_INIT(&allcf); 1095ecc953bSthorpej 1105ecc953bSthorpej TAILQ_INIT(&alldevi); 1115ecc953bSthorpej errdev.d_name = "<internal>"; 1125ecc953bSthorpej 1135ecc953bSthorpej TAILQ_INIT(&allpseudo); 1145ecc953bSthorpej 1155ecc953bSthorpej TAILQ_INIT(&alldevms); 1165ecc953bSthorpej 1175ecc953bSthorpej s_ifnet = intern("ifnet"); 1185ecc953bSthorpej s_qmark = intern("?"); 1195ecc953bSthorpej s_none = intern("none"); 1205ecc953bSthorpej } 1215ecc953bSthorpej 1225ecc953bSthorpej /* Name of include file just ended (set in scan.l) */ 1235ecc953bSthorpej extern const char *lastfile; 1245ecc953bSthorpej 1255ecc953bSthorpej void 1265ecc953bSthorpej enddefs(void) 1275ecc953bSthorpej { 1285ecc953bSthorpej struct devbase *dev; 1295ecc953bSthorpej 1305ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 1315ecc953bSthorpej if (!dev->d_isdef) { 1325ecc953bSthorpej (void)fprintf(stderr, 1335ecc953bSthorpej "%s: device `%s' used but not defined\n", 1345ecc953bSthorpej lastfile, dev->d_name); 1355ecc953bSthorpej errors++; 1365ecc953bSthorpej continue; 1375ecc953bSthorpej } 1385ecc953bSthorpej } 1395ecc953bSthorpej if (errors) { 1405ecc953bSthorpej (void)fprintf(stderr, "*** Stop.\n"); 1415ecc953bSthorpej exit(1); 1425ecc953bSthorpej } 1435ecc953bSthorpej } 1445ecc953bSthorpej 1455ecc953bSthorpej void 1465ecc953bSthorpej setdefmaxusers(int min, int def, int max) 1475ecc953bSthorpej { 1485ecc953bSthorpej 1495ecc953bSthorpej if (min < 1 || min > def || def > max) 1505ecc953bSthorpej error("maxusers must have 1 <= min (%d) <= default (%d) <= max (%d)", min, def, max); 1515ecc953bSthorpej else { 1525ecc953bSthorpej minmaxusers = min; 1535ecc953bSthorpej defmaxusers = def; 1545ecc953bSthorpej maxmaxusers = max; 1555ecc953bSthorpej } 1565ecc953bSthorpej } 1575ecc953bSthorpej 1585ecc953bSthorpej void 1595ecc953bSthorpej setmaxusers(int n) 1605ecc953bSthorpej { 1615ecc953bSthorpej 162895e5687Scube if (maxusers == n) { 1635ecc953bSthorpej error("duplicate maxusers parameter"); 1645ecc953bSthorpej return; 1655ecc953bSthorpej } 166895e5687Scube if (vflag && maxusers != 0) 167895e5687Scube warn("maxusers already defined"); 1685ecc953bSthorpej maxusers = n; 1695ecc953bSthorpej if (n < minmaxusers) { 1705ecc953bSthorpej error("warning: minimum of %d maxusers assumed", minmaxusers); 1715ecc953bSthorpej errors--; /* take it away */ 1725ecc953bSthorpej maxusers = minmaxusers; 1735ecc953bSthorpej } else if (n > maxmaxusers) { 1745ecc953bSthorpej error("warning: maxusers (%d) > %d", n, maxmaxusers); 1755ecc953bSthorpej errors--; 1765ecc953bSthorpej } 1775ecc953bSthorpej } 1785ecc953bSthorpej 1795ecc953bSthorpej void 1805ecc953bSthorpej setident(const char *i) 1815ecc953bSthorpej { 1825ecc953bSthorpej 1835ecc953bSthorpej ident = intern(i); 1845ecc953bSthorpej } 1855ecc953bSthorpej 1865ecc953bSthorpej /* 1875ecc953bSthorpej * Define an attribute, optionally with an interface (a locator list) 1885ecc953bSthorpej * and a set of attribute-dependencies. 1895ecc953bSthorpej * 1905ecc953bSthorpej * Attribute dependencies MAY NOT be interface attributes. 1915ecc953bSthorpej * 1925ecc953bSthorpej * Since an empty locator list is logically different from "no interface", 1935ecc953bSthorpej * all locator lists include a dummy head node, which we discard here. 1945ecc953bSthorpej */ 1955ecc953bSthorpej int 1965ecc953bSthorpej defattr(const char *name, struct nvlist *locs, struct nvlist *deps, 1975ecc953bSthorpej int devclass) 1985ecc953bSthorpej { 1995ecc953bSthorpej struct attr *a, *dep; 2005ecc953bSthorpej struct nvlist *nv; 2015ecc953bSthorpej int len; 2025ecc953bSthorpej 2035ecc953bSthorpej if (locs != NULL && devclass) 2045ecc953bSthorpej panic("defattr(%s): locators and devclass", name); 2055ecc953bSthorpej 2065ecc953bSthorpej if (deps != NULL && devclass) 2075ecc953bSthorpej panic("defattr(%s): dependencies and devclass", name); 2085ecc953bSthorpej 2095ecc953bSthorpej /* 2105ecc953bSthorpej * If this attribute depends on any others, make sure none of 2115ecc953bSthorpej * the dependencies are interface attributes. 2125ecc953bSthorpej */ 2135ecc953bSthorpej for (nv = deps; nv != NULL; nv = nv->nv_next) { 2145ecc953bSthorpej dep = nv->nv_ptr; 2155ecc953bSthorpej if (dep->a_iattr) { 2165ecc953bSthorpej error("`%s' dependency `%s' is an interface attribute", 2175ecc953bSthorpej name, dep->a_name); 2185ecc953bSthorpej return (1); 2195ecc953bSthorpej } 2205ecc953bSthorpej } 2215ecc953bSthorpej 2225ecc953bSthorpej a = ecalloc(1, sizeof *a); 2235ecc953bSthorpej if (ht_insert(attrtab, name, a)) { 2245ecc953bSthorpej free(a); 2255ecc953bSthorpej error("attribute `%s' already defined", name); 2265ecc953bSthorpej nvfreel(locs); 2275ecc953bSthorpej return (1); 2285ecc953bSthorpej } 2295ecc953bSthorpej 2305ecc953bSthorpej a->a_name = name; 2315ecc953bSthorpej if (locs != NULL) { 2325ecc953bSthorpej a->a_iattr = 1; 2335ecc953bSthorpej a->a_locs = locs->nv_next; 2345ecc953bSthorpej nvfree(locs); 2355ecc953bSthorpej } else { 2365ecc953bSthorpej a->a_iattr = 0; 2375ecc953bSthorpej a->a_locs = NULL; 2385ecc953bSthorpej } 2395ecc953bSthorpej if (devclass) { 240*bbfbbde1Schristos char classenum[256], *cp; 2415ecc953bSthorpej int errored = 0; 2425ecc953bSthorpej 243*bbfbbde1Schristos (void)snprintf(classenum, sizeof(classenum), "DV_%s", name); 2445ecc953bSthorpej for (cp = classenum + 3; *cp; cp++) { 2455ecc953bSthorpej if (!errored && 2465ecc953bSthorpej (!isalnum((unsigned char)*cp) || 2475ecc953bSthorpej (isalpha((unsigned char)*cp) && !islower((unsigned char)*cp)))) { 2485ecc953bSthorpej error("device class names must be lower-case alphanumeric characters"); 2495ecc953bSthorpej errored = 1; 2505ecc953bSthorpej } 2515ecc953bSthorpej *cp = toupper((unsigned char)*cp); 2525ecc953bSthorpej } 2535ecc953bSthorpej a->a_devclass = intern(classenum); 2545ecc953bSthorpej } else 2555ecc953bSthorpej a->a_devclass = NULL; 2565ecc953bSthorpej len = 0; 2575ecc953bSthorpej for (nv = a->a_locs; nv != NULL; nv = nv->nv_next) 2585ecc953bSthorpej len++; 2595ecc953bSthorpej a->a_loclen = len; 2605ecc953bSthorpej a->a_devs = NULL; 2615ecc953bSthorpej a->a_refs = NULL; 2625ecc953bSthorpej a->a_deps = deps; 2635ecc953bSthorpej a->a_expanding = 0; 2645ecc953bSthorpej 2655ecc953bSthorpej /* Expand the attribute to check for cycles in the graph. */ 2665ecc953bSthorpej expandattr(a, NULL); 2675ecc953bSthorpej 2685ecc953bSthorpej return (0); 2695ecc953bSthorpej } 2705ecc953bSthorpej 2715ecc953bSthorpej /* 2725ecc953bSthorpej * Return true if the given `error object' is embedded in the given 2735ecc953bSthorpej * pointer list. 2745ecc953bSthorpej */ 2755ecc953bSthorpej static int 2765ecc953bSthorpej has_errobj(struct nvlist *nv, void *obj) 2775ecc953bSthorpej { 2785ecc953bSthorpej 2795ecc953bSthorpej for (; nv != NULL; nv = nv->nv_next) 2805ecc953bSthorpej if (nv->nv_ptr == obj) 2815ecc953bSthorpej return (1); 2825ecc953bSthorpej return (0); 2835ecc953bSthorpej } 2845ecc953bSthorpej 2855ecc953bSthorpej /* 2865ecc953bSthorpej * Return true if the given attribute is embedded in the given 2875ecc953bSthorpej * pointer list. 2885ecc953bSthorpej */ 2895ecc953bSthorpej int 2905ecc953bSthorpej has_attr(struct nvlist *nv, const char *attr) 2915ecc953bSthorpej { 2925ecc953bSthorpej struct attr *a; 2935ecc953bSthorpej 2945ecc953bSthorpej if ((a = getattr(attr)) == NULL) 2955ecc953bSthorpej return (0); 2965ecc953bSthorpej 2975ecc953bSthorpej for (; nv != NULL; nv = nv->nv_next) 2985ecc953bSthorpej if (nv->nv_ptr == a) 2995ecc953bSthorpej return (1); 3005ecc953bSthorpej return (0); 3015ecc953bSthorpej } 3025ecc953bSthorpej 3035ecc953bSthorpej /* 3045ecc953bSthorpej * Add a device base to a list in an attribute (actually, to any list). 3055ecc953bSthorpej * Note that this does not check for duplicates, and does reverse the 3065ecc953bSthorpej * list order, but no one cares anyway. 3075ecc953bSthorpej */ 3085ecc953bSthorpej static struct nvlist * 3095ecc953bSthorpej addtoattr(struct nvlist *l, struct devbase *dev) 3105ecc953bSthorpej { 3115ecc953bSthorpej struct nvlist *n; 3125ecc953bSthorpej 3135ecc953bSthorpej n = newnv(NULL, NULL, dev, 0, l); 3145ecc953bSthorpej return (n); 3155ecc953bSthorpej } 3165ecc953bSthorpej 3175ecc953bSthorpej /* 3185ecc953bSthorpej * Define a device. This may (or may not) also define an interface 3195ecc953bSthorpej * attribute and/or refer to existing attributes. 3205ecc953bSthorpej */ 3215ecc953bSthorpej void 3225ecc953bSthorpej defdev(struct devbase *dev, struct nvlist *loclist, struct nvlist *attrs, 3235ecc953bSthorpej int ispseudo) 3245ecc953bSthorpej { 3255ecc953bSthorpej struct nvlist *nv; 3265ecc953bSthorpej struct attr *a; 3275ecc953bSthorpej 3285ecc953bSthorpej if (dev == &errdev) 3295ecc953bSthorpej goto bad; 3305ecc953bSthorpej if (dev->d_isdef) { 3315ecc953bSthorpej error("redefinition of `%s'", dev->d_name); 3325ecc953bSthorpej goto bad; 3335ecc953bSthorpej } 3345ecc953bSthorpej 3355ecc953bSthorpej dev->d_isdef = 1; 3365ecc953bSthorpej if (has_errobj(attrs, &errattr)) 3375ecc953bSthorpej goto bad; 3385ecc953bSthorpej 3395ecc953bSthorpej /* 3405ecc953bSthorpej * Handle implicit attribute definition from locator list. Do 3415ecc953bSthorpej * this before scanning the `at' list so that we can have, e.g.: 3425ecc953bSthorpej * device foo at other, foo { slot = -1 } 3435ecc953bSthorpej * (where you can plug in a foo-bus extender to a foo-bus). 3445ecc953bSthorpej */ 3455ecc953bSthorpej if (loclist != NULL) { 3465ecc953bSthorpej nv = loclist; 3475ecc953bSthorpej loclist = NULL; /* defattr disposes of them for us */ 3485ecc953bSthorpej if (defattr(dev->d_name, nv, NULL, 0)) 3495ecc953bSthorpej goto bad; 3505ecc953bSthorpej attrs = newnv(dev->d_name, NULL, getattr(dev->d_name), 0, 3515ecc953bSthorpej attrs); 352c130d400Scube 353c454f920Scube } 354c454f920Scube 355c130d400Scube /* 356c130d400Scube * Pseudo-devices can have children. Consider them as 357c130d400Scube * attaching at root. 358c130d400Scube */ 359c454f920Scube if (ispseudo) { 360c454f920Scube for (nv = attrs; nv != NULL; nv = nv->nv_next) 361c454f920Scube if (((struct attr *)(nv->nv_ptr))->a_iattr) 362c454f920Scube break; 363c454f920Scube if (nv != NULL) 364c130d400Scube ht_insert(devroottab, dev->d_name, dev); 3655ecc953bSthorpej } 3665ecc953bSthorpej 3675ecc953bSthorpej /* Committed! Set up fields. */ 3685ecc953bSthorpej dev->d_ispseudo = ispseudo; 3695ecc953bSthorpej dev->d_attrs = attrs; 3705ecc953bSthorpej dev->d_classattr = NULL; /* for now */ 3715ecc953bSthorpej 3725ecc953bSthorpej /* 3735ecc953bSthorpej * For each interface attribute this device refers to, add this 3745ecc953bSthorpej * device to its reference list. This makes, e.g., finding all 3755ecc953bSthorpej * "scsi"s easier. 3765ecc953bSthorpej * 3775ecc953bSthorpej * While looking through the attributes, set up the device 3785ecc953bSthorpej * class if any are devclass attributes (and error out if the 3795ecc953bSthorpej * device has two classes). 3805ecc953bSthorpej */ 3815ecc953bSthorpej for (nv = attrs; nv != NULL; nv = nv->nv_next) { 3825ecc953bSthorpej a = nv->nv_ptr; 3835ecc953bSthorpej if (a->a_iattr) 3845ecc953bSthorpej a->a_refs = addtoattr(a->a_refs, dev); 3855ecc953bSthorpej if (a->a_devclass != NULL) { 3865ecc953bSthorpej if (dev->d_classattr != NULL) { 3875ecc953bSthorpej error("device `%s' has multiple classes (`%s' and `%s')", 3885ecc953bSthorpej dev->d_name, dev->d_classattr->a_name, 3895ecc953bSthorpej a->a_name); 3905ecc953bSthorpej } 3915ecc953bSthorpej dev->d_classattr = a; 3925ecc953bSthorpej } 3935ecc953bSthorpej } 3945ecc953bSthorpej return; 3955ecc953bSthorpej bad: 3965ecc953bSthorpej nvfreel(loclist); 3975ecc953bSthorpej nvfreel(attrs); 3985ecc953bSthorpej } 3995ecc953bSthorpej 4005ecc953bSthorpej /* 4015ecc953bSthorpej * Look up a devbase. Also makes sure it is a reasonable name, 4025ecc953bSthorpej * i.e., does not end in a digit or contain special characters. 4035ecc953bSthorpej */ 4045ecc953bSthorpej struct devbase * 4055ecc953bSthorpej getdevbase(const char *name) 4065ecc953bSthorpej { 4075ecc953bSthorpej u_char *p; 4085ecc953bSthorpej struct devbase *dev; 4095ecc953bSthorpej 4105ecc953bSthorpej p = (u_char *)name; 4115ecc953bSthorpej if (!isalpha(*p)) 4125ecc953bSthorpej goto badname; 4135ecc953bSthorpej while (*++p) { 4145ecc953bSthorpej if (!isalnum(*p) && *p != '_') 4155ecc953bSthorpej goto badname; 4165ecc953bSthorpej } 4175ecc953bSthorpej if (isdigit(*--p)) { 4185ecc953bSthorpej badname: 4195ecc953bSthorpej error("bad device base name `%s'", name); 4205ecc953bSthorpej return (&errdev); 4215ecc953bSthorpej } 4225ecc953bSthorpej dev = ht_lookup(devbasetab, name); 4235ecc953bSthorpej if (dev == NULL) { 4245ecc953bSthorpej dev = ecalloc(1, sizeof *dev); 4255ecc953bSthorpej dev->d_name = name; 4265ecc953bSthorpej dev->d_isdef = 0; 4275ecc953bSthorpej dev->d_major = NODEV; 4285ecc953bSthorpej dev->d_attrs = NULL; 4295ecc953bSthorpej dev->d_ihead = NULL; 4305ecc953bSthorpej dev->d_ipp = &dev->d_ihead; 4315ecc953bSthorpej dev->d_ahead = NULL; 4325ecc953bSthorpej dev->d_app = &dev->d_ahead; 4335ecc953bSthorpej dev->d_umax = 0; 4345ecc953bSthorpej TAILQ_INSERT_TAIL(&allbases, dev, d_next); 4355ecc953bSthorpej if (ht_insert(devbasetab, name, dev)) 4365ecc953bSthorpej panic("getdevbase(%s)", name); 4375ecc953bSthorpej } 4385ecc953bSthorpej return (dev); 4395ecc953bSthorpej } 4405ecc953bSthorpej 4415ecc953bSthorpej /* 4425ecc953bSthorpej * Define some of a device's allowable parent attachments. 4435ecc953bSthorpej * There may be a list of (plain) attributes. 4445ecc953bSthorpej */ 4455ecc953bSthorpej void 4465ecc953bSthorpej defdevattach(struct deva *deva, struct devbase *dev, struct nvlist *atlist, 4475ecc953bSthorpej struct nvlist *attrs) 4485ecc953bSthorpej { 4495ecc953bSthorpej struct nvlist *nv; 4505ecc953bSthorpej struct attr *a; 4515ecc953bSthorpej struct deva *da; 4525ecc953bSthorpej 4535ecc953bSthorpej if (dev == &errdev) 4545ecc953bSthorpej goto bad; 4555ecc953bSthorpej if (deva == NULL) 4565ecc953bSthorpej deva = getdevattach(dev->d_name); 4575ecc953bSthorpej if (deva == &errdeva) 4585ecc953bSthorpej goto bad; 4595ecc953bSthorpej if (!dev->d_isdef) { 4605ecc953bSthorpej error("attaching undefined device `%s'", dev->d_name); 4615ecc953bSthorpej goto bad; 4625ecc953bSthorpej } 4635ecc953bSthorpej if (deva->d_isdef) { 4645ecc953bSthorpej error("redefinition of `%s'", deva->d_name); 4655ecc953bSthorpej goto bad; 4665ecc953bSthorpej } 4675ecc953bSthorpej if (dev->d_ispseudo) { 4685ecc953bSthorpej error("pseudo-devices can't attach"); 4695ecc953bSthorpej goto bad; 4705ecc953bSthorpej } 4715ecc953bSthorpej 4725ecc953bSthorpej deva->d_isdef = 1; 4735ecc953bSthorpej if (has_errobj(attrs, &errattr)) 4745ecc953bSthorpej goto bad; 4755ecc953bSthorpej for (nv = attrs; nv != NULL; nv = nv->nv_next) { 4765ecc953bSthorpej a = nv->nv_ptr; 4775ecc953bSthorpej if (a == &errattr) 4785ecc953bSthorpej continue; /* already complained */ 4795ecc953bSthorpej if (a->a_iattr || a->a_devclass != NULL) 4805ecc953bSthorpej error("`%s' is not a plain attribute", a->a_name); 4815ecc953bSthorpej } 4825ecc953bSthorpej 4835ecc953bSthorpej /* Committed! Set up fields. */ 4845ecc953bSthorpej deva->d_attrs = attrs; 4855ecc953bSthorpej deva->d_atlist = atlist; 4865ecc953bSthorpej deva->d_devbase = dev; 4875ecc953bSthorpej 4885ecc953bSthorpej /* 4895ecc953bSthorpej * Turn the `at' list into interface attributes (map each 4905ecc953bSthorpej * nv_name to an attribute, or to NULL for root), and add 4915ecc953bSthorpej * this device to those attributes, so that children can 4925ecc953bSthorpej * be listed at this particular device if they are supported 4935ecc953bSthorpej * by that attribute. 4945ecc953bSthorpej */ 4955ecc953bSthorpej for (nv = atlist; nv != NULL; nv = nv->nv_next) { 4965ecc953bSthorpej if (nv->nv_name == NULL) 4975ecc953bSthorpej nv->nv_ptr = a = NULL; /* at root */ 4985ecc953bSthorpej else 4995ecc953bSthorpej nv->nv_ptr = a = getattr(nv->nv_name); 5005ecc953bSthorpej if (a == &errattr) 5015ecc953bSthorpej continue; /* already complained */ 5025ecc953bSthorpej 5035ecc953bSthorpej /* 5045ecc953bSthorpej * Make sure that an attachment spec doesn't 5055ecc953bSthorpej * already say how to attach to this attribute. 5065ecc953bSthorpej */ 5075ecc953bSthorpej for (da = dev->d_ahead; da != NULL; da = da->d_bsame) 5085ecc953bSthorpej if (onlist(da->d_atlist, a)) 5095ecc953bSthorpej error("attach at `%s' already done by `%s'", 5105ecc953bSthorpej a ? a->a_name : "root", da->d_name); 5115ecc953bSthorpej 512c130d400Scube if (a == NULL) { 513c130d400Scube ht_insert(devroottab, dev->d_name, dev); 5145ecc953bSthorpej continue; /* at root; don't add */ 515c130d400Scube } 5165ecc953bSthorpej if (!a->a_iattr) 5175ecc953bSthorpej error("%s cannot be at plain attribute `%s'", 5185ecc953bSthorpej dev->d_name, a->a_name); 5195ecc953bSthorpej else 5205ecc953bSthorpej a->a_devs = addtoattr(a->a_devs, dev); 5215ecc953bSthorpej } 5225ecc953bSthorpej 5235ecc953bSthorpej /* attach to parent */ 5245ecc953bSthorpej *dev->d_app = deva; 5255ecc953bSthorpej dev->d_app = &deva->d_bsame; 5265ecc953bSthorpej return; 5275ecc953bSthorpej bad: 5285ecc953bSthorpej nvfreel(atlist); 5295ecc953bSthorpej nvfreel(attrs); 5305ecc953bSthorpej } 5315ecc953bSthorpej 5325ecc953bSthorpej /* 5335ecc953bSthorpej * Look up a device attachment. Also makes sure it is a reasonable 5345ecc953bSthorpej * name, i.e., does not contain digits or special characters. 5355ecc953bSthorpej */ 5365ecc953bSthorpej struct deva * 5375ecc953bSthorpej getdevattach(const char *name) 5385ecc953bSthorpej { 5395ecc953bSthorpej u_char *p; 5405ecc953bSthorpej struct deva *deva; 5415ecc953bSthorpej 5425ecc953bSthorpej p = (u_char *)name; 5435ecc953bSthorpej if (!isalpha(*p)) 5445ecc953bSthorpej goto badname; 5455ecc953bSthorpej while (*++p) { 5465ecc953bSthorpej if (!isalnum(*p) && *p != '_') 5475ecc953bSthorpej goto badname; 5485ecc953bSthorpej } 5495ecc953bSthorpej if (isdigit(*--p)) { 5505ecc953bSthorpej badname: 5515ecc953bSthorpej error("bad device attachment name `%s'", name); 5525ecc953bSthorpej return (&errdeva); 5535ecc953bSthorpej } 5545ecc953bSthorpej deva = ht_lookup(devatab, name); 5555ecc953bSthorpej if (deva == NULL) { 5565ecc953bSthorpej deva = ecalloc(1, sizeof *deva); 5575ecc953bSthorpej deva->d_name = name; 5585ecc953bSthorpej deva->d_bsame = NULL; 5595ecc953bSthorpej deva->d_isdef = 0; 5605ecc953bSthorpej deva->d_devbase = NULL; 5615ecc953bSthorpej deva->d_atlist = NULL; 5625ecc953bSthorpej deva->d_attrs = NULL; 5635ecc953bSthorpej deva->d_ihead = NULL; 5645ecc953bSthorpej deva->d_ipp = &deva->d_ihead; 5655ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevas, deva, d_next); 5665ecc953bSthorpej if (ht_insert(devatab, name, deva)) 5675ecc953bSthorpej panic("getdeva(%s)", name); 5685ecc953bSthorpej } 5695ecc953bSthorpej return (deva); 5705ecc953bSthorpej } 5715ecc953bSthorpej 5725ecc953bSthorpej /* 5735ecc953bSthorpej * Look up an attribute. 5745ecc953bSthorpej */ 5755ecc953bSthorpej struct attr * 5765ecc953bSthorpej getattr(const char *name) 5775ecc953bSthorpej { 5785ecc953bSthorpej struct attr *a; 5795ecc953bSthorpej 5805ecc953bSthorpej if ((a = ht_lookup(attrtab, name)) == NULL) { 5815ecc953bSthorpej error("undefined attribute `%s'", name); 5825ecc953bSthorpej a = &errattr; 5835ecc953bSthorpej } 5845ecc953bSthorpej return (a); 5855ecc953bSthorpej } 5865ecc953bSthorpej 5875ecc953bSthorpej /* 5885ecc953bSthorpej * Recursively expand an attribute and its dependencies, checking for 5895ecc953bSthorpej * cycles, and invoking a callback for each attribute found. 5905ecc953bSthorpej */ 5915ecc953bSthorpej void 5925ecc953bSthorpej expandattr(struct attr *a, void (*callback)(struct attr *)) 5935ecc953bSthorpej { 5945ecc953bSthorpej struct nvlist *nv; 5955ecc953bSthorpej struct attr *dep; 5965ecc953bSthorpej 5975ecc953bSthorpej if (a->a_expanding) { 5985ecc953bSthorpej error("circular dependency on attribute `%s'", a->a_name); 5995ecc953bSthorpej return; 6005ecc953bSthorpej } 6015ecc953bSthorpej 6025ecc953bSthorpej a->a_expanding = 1; 6035ecc953bSthorpej 6045ecc953bSthorpej /* First expand all of this attribute's dependencies. */ 6055ecc953bSthorpej for (nv = a->a_deps; nv != NULL; nv = nv->nv_next) { 6065ecc953bSthorpej dep = nv->nv_ptr; 6075ecc953bSthorpej expandattr(dep, callback); 6085ecc953bSthorpej } 6095ecc953bSthorpej 6105ecc953bSthorpej /* ...and now invoke the callback for ourself. */ 6115ecc953bSthorpej if (callback != NULL) 6125ecc953bSthorpej (*callback)(a); 6135ecc953bSthorpej 6145ecc953bSthorpej a->a_expanding = 0; 6155ecc953bSthorpej } 6165ecc953bSthorpej 6175ecc953bSthorpej /* 6185ecc953bSthorpej * Set the major device number for a device, so that it can be used 6195ecc953bSthorpej * as a root/dumps "on" device in a configuration. 6205ecc953bSthorpej */ 6215ecc953bSthorpej void 6225ecc953bSthorpej setmajor(struct devbase *d, int n) 6235ecc953bSthorpej { 6245ecc953bSthorpej 6255ecc953bSthorpej if (d != &errdev && d->d_major != NODEV) 6265ecc953bSthorpej error("device `%s' is already major %d", 6275ecc953bSthorpej d->d_name, d->d_major); 6285ecc953bSthorpej else 6295ecc953bSthorpej d->d_major = n; 6305ecc953bSthorpej } 6315ecc953bSthorpej 6325ecc953bSthorpej const char * 6335ecc953bSthorpej major2name(int maj) 6345ecc953bSthorpej { 6355ecc953bSthorpej struct devbase *dev; 6365ecc953bSthorpej struct devm *dm; 6375ecc953bSthorpej 6385ecc953bSthorpej if (!do_devsw) { 6395ecc953bSthorpej TAILQ_FOREACH(dev, &allbases, d_next) { 6405ecc953bSthorpej if (dev->d_major == maj) 6415ecc953bSthorpej return (dev->d_name); 6425ecc953bSthorpej } 6435ecc953bSthorpej } else { 6445ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 6455ecc953bSthorpej if (dm->dm_bmajor == maj) 6465ecc953bSthorpej return (dm->dm_name); 6475ecc953bSthorpej } 6485ecc953bSthorpej } 6495ecc953bSthorpej return (NULL); 6505ecc953bSthorpej } 6515ecc953bSthorpej 6525ecc953bSthorpej int 6535ecc953bSthorpej dev2major(struct devbase *dev) 6545ecc953bSthorpej { 6555ecc953bSthorpej struct devm *dm; 6565ecc953bSthorpej 6575ecc953bSthorpej if (!do_devsw) 6585ecc953bSthorpej return (dev->d_major); 6595ecc953bSthorpej 6605ecc953bSthorpej TAILQ_FOREACH(dm, &alldevms, dm_next) { 6615ecc953bSthorpej if (strcmp(dm->dm_name, dev->d_name) == 0) 6625ecc953bSthorpej return (dm->dm_bmajor); 6635ecc953bSthorpej } 6645ecc953bSthorpej return (NODEV); 6655ecc953bSthorpej } 6665ecc953bSthorpej 6675ecc953bSthorpej /* 6685ecc953bSthorpej * Make a string description of the device at maj/min. 6695ecc953bSthorpej */ 6705ecc953bSthorpej static const char * 6715ecc953bSthorpej makedevstr(int maj, int min) 6725ecc953bSthorpej { 6735ecc953bSthorpej const char *devname; 6745ecc953bSthorpej char buf[32]; 6755ecc953bSthorpej 6765ecc953bSthorpej devname = major2name(maj); 6775ecc953bSthorpej if (devname == NULL) 6785ecc953bSthorpej (void)snprintf(buf, sizeof(buf), "<%d/%d>", maj, min); 6795ecc953bSthorpej else 6805ecc953bSthorpej (void)snprintf(buf, sizeof(buf), "%s%d%c", devname, 6815ecc953bSthorpej min / maxpartitions, (min % maxpartitions) + 'a'); 6825ecc953bSthorpej 6835ecc953bSthorpej return (intern(buf)); 6845ecc953bSthorpej } 6855ecc953bSthorpej 6865ecc953bSthorpej /* 6875ecc953bSthorpej * Map things like "ra0b" => makedev(major("ra"), 0*maxpartitions + 'b'-'a'). 6885ecc953bSthorpej * Handle the case where the device number is given but there is no 6895ecc953bSthorpej * corresponding name, and map NULL to the default. 6905ecc953bSthorpej */ 6915ecc953bSthorpej static int 6925ecc953bSthorpej resolve(struct nvlist **nvp, const char *name, const char *what, 6935ecc953bSthorpej struct nvlist *dflt, int part) 6945ecc953bSthorpej { 6955ecc953bSthorpej struct nvlist *nv; 6965ecc953bSthorpej struct devbase *dev; 6975ecc953bSthorpej const char *cp; 6985ecc953bSthorpej int maj, min, i, l; 6995ecc953bSthorpej int unit; 7005ecc953bSthorpej char buf[NAMESIZE]; 7015ecc953bSthorpej 7025ecc953bSthorpej if ((u_int)(part -= 'a') >= maxpartitions) 7035ecc953bSthorpej panic("resolve"); 7045ecc953bSthorpej if ((nv = *nvp) == NULL) { 7055ecc953bSthorpej dev_t d = NODEV; 7065ecc953bSthorpej /* 7075ecc953bSthorpej * Apply default. Easiest to do this by number. 7085ecc953bSthorpej * Make sure to retain NODEVness, if this is dflt's disposition. 7095ecc953bSthorpej */ 7105ecc953bSthorpej if (dflt->nv_int != NODEV) { 7115ecc953bSthorpej maj = major(dflt->nv_int); 7125ecc953bSthorpej min = ((minor(dflt->nv_int) / maxpartitions) * 7135ecc953bSthorpej maxpartitions) + part; 7145ecc953bSthorpej d = makedev(maj, min); 7155ecc953bSthorpej cp = makedevstr(maj, min); 7165ecc953bSthorpej } else 7175ecc953bSthorpej cp = NULL; 7185ecc953bSthorpej *nvp = nv = newnv(NULL, cp, NULL, d, NULL); 7195ecc953bSthorpej } 7205ecc953bSthorpej if (nv->nv_int != NODEV) { 7215ecc953bSthorpej /* 7225ecc953bSthorpej * By the numbers. Find the appropriate major number 7235ecc953bSthorpej * to make a name. 7245ecc953bSthorpej */ 7255ecc953bSthorpej maj = major(nv->nv_int); 7265ecc953bSthorpej min = minor(nv->nv_int); 7275ecc953bSthorpej nv->nv_str = makedevstr(maj, min); 7285ecc953bSthorpej return (0); 7295ecc953bSthorpej } 7305ecc953bSthorpej 7315ecc953bSthorpej if (nv->nv_str == NULL || nv->nv_str == s_qmark) 7325ecc953bSthorpej /* 7335ecc953bSthorpej * Wildcarded or unspecified; leave it as NODEV. 7345ecc953bSthorpej */ 7355ecc953bSthorpej return (0); 7365ecc953bSthorpej 7375ecc953bSthorpej /* 7385ecc953bSthorpej * The normal case: things like "ra2b". Check for partition 7395ecc953bSthorpej * suffix, remove it if there, and split into name ("ra") and 7405ecc953bSthorpej * unit (2). 7415ecc953bSthorpej */ 7425ecc953bSthorpej l = i = strlen(nv->nv_str); 7435ecc953bSthorpej cp = &nv->nv_str[l]; 7445ecc953bSthorpej if (l > 1 && *--cp >= 'a' && *cp < 'a' + maxpartitions && 7455ecc953bSthorpej isdigit((unsigned char)cp[-1])) { 7465ecc953bSthorpej l--; 7475ecc953bSthorpej part = *cp - 'a'; 7485ecc953bSthorpej } 7495ecc953bSthorpej cp = nv->nv_str; 7505ecc953bSthorpej if (split(cp, l, buf, sizeof buf, &unit)) { 7515ecc953bSthorpej error("%s: invalid %s device name `%s'", name, what, cp); 7525ecc953bSthorpej return (1); 7535ecc953bSthorpej } 7545ecc953bSthorpej dev = ht_lookup(devbasetab, intern(buf)); 7555ecc953bSthorpej if (dev == NULL) { 7565ecc953bSthorpej error("%s: device `%s' does not exist", name, buf); 7575ecc953bSthorpej return (1); 7585ecc953bSthorpej } 7595ecc953bSthorpej 7605ecc953bSthorpej /* 7615ecc953bSthorpej * Check for the magic network interface attribute, and 7625ecc953bSthorpej * don't bother making a device number. 7635ecc953bSthorpej */ 7645ecc953bSthorpej if (has_attr(dev->d_attrs, s_ifnet)) { 7655ecc953bSthorpej nv->nv_int = NODEV; 7665ecc953bSthorpej nv->nv_ifunit = unit; /* XXX XXX XXX */ 7675ecc953bSthorpej } else { 7685ecc953bSthorpej maj = dev2major(dev); 7695ecc953bSthorpej if (maj == NODEV) { 7705ecc953bSthorpej error("%s: can't make %s device from `%s'", 7715ecc953bSthorpej name, what, nv->nv_str); 7725ecc953bSthorpej return (1); 7735ecc953bSthorpej } 7745ecc953bSthorpej nv->nv_int = makedev(maj, unit * maxpartitions + part); 7755ecc953bSthorpej } 7765ecc953bSthorpej 7775ecc953bSthorpej nv->nv_name = dev->d_name; 7785ecc953bSthorpej return (0); 7795ecc953bSthorpej } 7805ecc953bSthorpej 7815ecc953bSthorpej /* 7825ecc953bSthorpej * Add a completed configuration to the list. 7835ecc953bSthorpej */ 7845ecc953bSthorpej void 7855ecc953bSthorpej addconf(struct config *cf0) 7865ecc953bSthorpej { 7875ecc953bSthorpej struct config *cf; 7885ecc953bSthorpej const char *name; 7895ecc953bSthorpej 7905ecc953bSthorpej name = cf0->cf_name; 7915ecc953bSthorpej cf = ecalloc(1, sizeof *cf); 7925ecc953bSthorpej if (ht_insert(cfhashtab, name, cf)) { 7935ecc953bSthorpej error("configuration `%s' already defined", name); 7945ecc953bSthorpej free(cf); 7955ecc953bSthorpej goto bad; 7965ecc953bSthorpej } 7975ecc953bSthorpej *cf = *cf0; 7985ecc953bSthorpej 7995ecc953bSthorpej /* 8005ecc953bSthorpej * Resolve the root device. 8015ecc953bSthorpej */ 802cd429362Serh if (cf->cf_root == NULL) { 8035ecc953bSthorpej error("%s: no root device specified", name); 8045ecc953bSthorpej goto bad; 8055ecc953bSthorpej } 806cd429362Serh if (cf->cf_root && cf->cf_root->nv_str != s_qmark) { 807cd429362Serh struct nvlist *nv; 808cd429362Serh nv = cf->cf_root; 8095ecc953bSthorpej if (resolve(&cf->cf_root, name, "root", nv, 'a')) 8105ecc953bSthorpej goto bad; 8115ecc953bSthorpej } 8125ecc953bSthorpej 8135ecc953bSthorpej /* 8145ecc953bSthorpej * Resolve the dump device. 8155ecc953bSthorpej */ 8165ecc953bSthorpej if (cf->cf_dump == NULL || cf->cf_dump->nv_str == s_qmark) { 8175ecc953bSthorpej /* 8185ecc953bSthorpej * Wildcarded dump device is equivalent to unspecified. 8195ecc953bSthorpej */ 8205ecc953bSthorpej cf->cf_dump = NULL; 8215ecc953bSthorpej } else if (cf->cf_dump->nv_str == s_none) { 8225ecc953bSthorpej /* 8235ecc953bSthorpej * Operator has requested that no dump device should be 8245ecc953bSthorpej * configured; do nothing. 8255ecc953bSthorpej */ 8265ecc953bSthorpej } else { 8275ecc953bSthorpej if (resolve(&cf->cf_dump, name, "dumps", cf->cf_dump, 'b')) 8285ecc953bSthorpej goto bad; 8295ecc953bSthorpej } 8305ecc953bSthorpej 8315ecc953bSthorpej /* Wildcarded fstype is `unspecified'. */ 8325ecc953bSthorpej if (cf->cf_fstype == s_qmark) 8335ecc953bSthorpej cf->cf_fstype = NULL; 8345ecc953bSthorpej 8355ecc953bSthorpej TAILQ_INSERT_TAIL(&allcf, cf, cf_next); 8365ecc953bSthorpej return; 8375ecc953bSthorpej bad: 8385ecc953bSthorpej nvfreel(cf0->cf_root); 8395ecc953bSthorpej nvfreel(cf0->cf_dump); 8405ecc953bSthorpej } 8415ecc953bSthorpej 8425ecc953bSthorpej void 8435ecc953bSthorpej setconf(struct nvlist **npp, const char *what, struct nvlist *v) 8445ecc953bSthorpej { 8455ecc953bSthorpej 8465ecc953bSthorpej if (*npp != NULL) { 8475ecc953bSthorpej error("duplicate %s specification", what); 8485ecc953bSthorpej nvfreel(v); 8495ecc953bSthorpej } else 8505ecc953bSthorpej *npp = v; 8515ecc953bSthorpej } 8525ecc953bSthorpej 8535ecc953bSthorpej void 85442b52b8aScube delconf(const char *name) 85542b52b8aScube { 85642b52b8aScube struct config *cf; 85742b52b8aScube 85842b52b8aScube if (ht_lookup(cfhashtab, name) == NULL) { 85942b52b8aScube error("configuration `%s' undefined", name); 86042b52b8aScube return; 86142b52b8aScube } 86242b52b8aScube (void)ht_remove(cfhashtab, name); 86342b52b8aScube 86442b52b8aScube TAILQ_FOREACH(cf, &allcf, cf_next) 86542b52b8aScube if (!strcmp(cf->cf_name, name)) 86642b52b8aScube break; 86742b52b8aScube if (cf == NULL) 86842b52b8aScube panic("lost configuration `%s'", name); 86942b52b8aScube 87042b52b8aScube TAILQ_REMOVE(&allcf, cf, cf_next); 87142b52b8aScube } 87242b52b8aScube 87342b52b8aScube void 8745ecc953bSthorpej setfstype(const char **fstp, const char *v) 8755ecc953bSthorpej { 8765ecc953bSthorpej 8775ecc953bSthorpej if (*fstp != NULL) { 8785ecc953bSthorpej error("multiple fstype specifications"); 8795ecc953bSthorpej return; 8805ecc953bSthorpej } 8815ecc953bSthorpej 8825ecc953bSthorpej if (v != s_qmark && OPT_FSOPT(v)) { 8835ecc953bSthorpej error("\"%s\" is not a configured file system", v); 8845ecc953bSthorpej return; 8855ecc953bSthorpej } 8865ecc953bSthorpej 8875ecc953bSthorpej *fstp = v; 8885ecc953bSthorpej } 8895ecc953bSthorpej 8905ecc953bSthorpej static struct devi * 8915ecc953bSthorpej newdevi(const char *name, int unit, struct devbase *d) 8925ecc953bSthorpej { 8935ecc953bSthorpej struct devi *i; 8945ecc953bSthorpej 8955ecc953bSthorpej i = ecalloc(1, sizeof *i); 8965ecc953bSthorpej i->i_name = name; 8975ecc953bSthorpej i->i_unit = unit; 8985ecc953bSthorpej i->i_base = d; 8995ecc953bSthorpej i->i_bsame = NULL; 9005ecc953bSthorpej i->i_asame = NULL; 9015ecc953bSthorpej i->i_alias = NULL; 9025ecc953bSthorpej i->i_at = NULL; 9035ecc953bSthorpej i->i_pspec = NULL; 9045ecc953bSthorpej i->i_atdeva = NULL; 9055ecc953bSthorpej i->i_locs = NULL; 9065ecc953bSthorpej i->i_cfflags = 0; 9075ecc953bSthorpej i->i_lineno = currentline(); 9080dbd1c0eScube i->i_srcfile = yyfile; 9097aa6070dScube i->i_active = DEVI_ORPHAN; /* Proper analysis comes later */ 910a31ff6b4Scube i->i_level = devilevel; 9115ecc953bSthorpej if (unit >= d->d_umax) 9125ecc953bSthorpej d->d_umax = unit + 1; 9135ecc953bSthorpej return (i); 9145ecc953bSthorpej } 9155ecc953bSthorpej 9165ecc953bSthorpej /* 9175ecc953bSthorpej * Add the named device as attaching to the named attribute (or perhaps 9185ecc953bSthorpej * another device instead) plus unit number. 9195ecc953bSthorpej */ 9205ecc953bSthorpej void 9215ecc953bSthorpej adddev(const char *name, const char *at, struct nvlist *loclist, int flags) 9225ecc953bSthorpej { 9235ecc953bSthorpej struct devi *i; /* the new instance */ 9245ecc953bSthorpej struct pspec *p; /* and its pspec */ 9255ecc953bSthorpej struct attr *attr; /* attribute that allows attach */ 9265ecc953bSthorpej struct devbase *ib; /* i->i_base */ 9275ecc953bSthorpej struct devbase *ab; /* not NULL => at another dev */ 9285ecc953bSthorpej struct nvlist *nv; 9295ecc953bSthorpej struct deva *iba; /* devbase attachment used */ 9305ecc953bSthorpej const char *cp; 9315ecc953bSthorpej int atunit; 9325ecc953bSthorpej char atbuf[NAMESIZE]; 9335ecc953bSthorpej int hit; 9345ecc953bSthorpej 9355ecc953bSthorpej ab = NULL; 9365ecc953bSthorpej iba = NULL; 9375ecc953bSthorpej if (at == NULL) { 9385ecc953bSthorpej /* "at root" */ 9395ecc953bSthorpej p = NULL; 9405ecc953bSthorpej if ((i = getdevi(name)) == NULL) 9415ecc953bSthorpej goto bad; 9425ecc953bSthorpej /* 9435ecc953bSthorpej * Must warn about i_unit > 0 later, after taking care of 9445ecc953bSthorpej * the STAR cases (we could do non-star's here but why 9455ecc953bSthorpej * bother?). Make sure this device can be at root. 9465ecc953bSthorpej */ 9475ecc953bSthorpej ib = i->i_base; 9485ecc953bSthorpej hit = 0; 9495ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 9505ecc953bSthorpej if (onlist(iba->d_atlist, NULL)) { 9515ecc953bSthorpej hit = 1; 9525ecc953bSthorpej break; 9535ecc953bSthorpej } 9545ecc953bSthorpej if (!hit) { 9555ecc953bSthorpej error("`%s' cannot attach to the root", ib->d_name); 9565ec393e9Scube i->i_active = DEVI_BROKEN; 9575ecc953bSthorpej goto bad; 9585ecc953bSthorpej } 9595ecc953bSthorpej attr = &errattr; /* a convenient "empty" attr */ 9605ecc953bSthorpej } else { 9615ecc953bSthorpej if (split(at, strlen(at), atbuf, sizeof atbuf, &atunit)) { 9625ecc953bSthorpej error("invalid attachment name `%s'", at); 9635ecc953bSthorpej /* (void)getdevi(name); -- ??? */ 9645ecc953bSthorpej goto bad; 9655ecc953bSthorpej } 9665ecc953bSthorpej if ((i = getdevi(name)) == NULL) 9675ecc953bSthorpej goto bad; 9685ecc953bSthorpej ib = i->i_base; 9695ecc953bSthorpej 9705ecc953bSthorpej /* 9715ecc953bSthorpej * Devices can attach to two types of things: Attributes, 9725ecc953bSthorpej * and other devices (which have the appropriate attributes 9735ecc953bSthorpej * to allow attachment). 9745ecc953bSthorpej * 9755ecc953bSthorpej * (1) If we're attached to an attribute, then we don't need 9765ecc953bSthorpej * look at the parent base device to see what attributes 9775ecc953bSthorpej * it has, and make sure that we can attach to them. 9785ecc953bSthorpej * 9795ecc953bSthorpej * (2) If we're attached to a real device (i.e. named in 9805ecc953bSthorpej * the config file), we want to remember that so that 9815ecc953bSthorpej * at cross-check time, if the device we're attached to 9825ecc953bSthorpej * is missing but other devices which also provide the 9835ecc953bSthorpej * attribute are present, we don't get a false "OK." 9845ecc953bSthorpej * 9855ecc953bSthorpej * (3) If the thing we're attached to is an attribute 9865ecc953bSthorpej * but is actually named in the config file, we still 9875ecc953bSthorpej * have to remember its devbase. 9885ecc953bSthorpej */ 9895ecc953bSthorpej cp = intern(atbuf); 9905ecc953bSthorpej 9915ecc953bSthorpej /* Figure out parent's devbase, to satisfy case (3). */ 9925ecc953bSthorpej ab = ht_lookup(devbasetab, cp); 9935ecc953bSthorpej 9945ecc953bSthorpej /* Find out if it's an attribute. */ 9955ecc953bSthorpej attr = ht_lookup(attrtab, cp); 9965ecc953bSthorpej 9975ecc953bSthorpej /* Make sure we're _really_ attached to the attr. Case (1). */ 9985ecc953bSthorpej if (attr != NULL && onlist(attr->a_devs, ib)) 9995ecc953bSthorpej goto findattachment; 10005ecc953bSthorpej 10015ecc953bSthorpej /* 10025ecc953bSthorpej * Else a real device, and not just an attribute. Case (2). 10035ecc953bSthorpej * 10045ecc953bSthorpej * Have to work a bit harder to see whether we have 10055ecc953bSthorpej * something like "tg0 at esp0" (where esp is merely 10065ecc953bSthorpej * not an attribute) or "tg0 at nonesuch0" (where 10075ecc953bSthorpej * nonesuch is not even a device). 10085ecc953bSthorpej */ 10095ecc953bSthorpej if (ab == NULL) { 10105ecc953bSthorpej error("%s at %s: `%s' unknown", 10115ecc953bSthorpej name, at, atbuf); 10125ec393e9Scube i->i_active = DEVI_BROKEN; 10135ecc953bSthorpej goto bad; 10145ecc953bSthorpej } 10155ecc953bSthorpej 10165ecc953bSthorpej /* 10175ecc953bSthorpej * See if the named parent carries an attribute 10185ecc953bSthorpej * that allows it to supervise device ib. 10195ecc953bSthorpej */ 10205ecc953bSthorpej for (nv = ab->d_attrs; nv != NULL; nv = nv->nv_next) { 10215ecc953bSthorpej attr = nv->nv_ptr; 10225ecc953bSthorpej if (onlist(attr->a_devs, ib)) 10235ecc953bSthorpej goto findattachment; 10245ecc953bSthorpej } 10255ecc953bSthorpej error("`%s' cannot attach to `%s'", ib->d_name, atbuf); 10265ec393e9Scube i->i_active = DEVI_BROKEN; 10275ecc953bSthorpej goto bad; 10285ecc953bSthorpej 10295ecc953bSthorpej findattachment: 10305ecc953bSthorpej /* 10315ecc953bSthorpej * Find the parent spec. If a matching one has not yet been 10325ecc953bSthorpej * created, create one. 10335ecc953bSthorpej */ 10345ecc953bSthorpej p = getpspec(attr, ab, atunit); 10355ecc953bSthorpej p->p_devs = newnv(NULL, NULL, i, 0, p->p_devs); 10365ecc953bSthorpej 10375ecc953bSthorpej /* find out which attachment it uses */ 10385ecc953bSthorpej hit = 0; 10395ecc953bSthorpej for (iba = ib->d_ahead; iba != NULL; iba = iba->d_bsame) 10405ecc953bSthorpej if (onlist(iba->d_atlist, attr)) { 10415ecc953bSthorpej hit = 1; 10425ecc953bSthorpej break; 10435ecc953bSthorpej } 10445ecc953bSthorpej if (!hit) 10455ecc953bSthorpej panic("adddev: can't figure out attachment"); 10465ecc953bSthorpej } 10475ec393e9Scube if ((i->i_locs = fixloc(name, attr, loclist)) == NULL) { 10485ec393e9Scube i->i_active = DEVI_BROKEN; 10495ecc953bSthorpej goto bad; 10505ec393e9Scube } 10515ecc953bSthorpej i->i_at = at; 10525ecc953bSthorpej i->i_pspec = p; 10535ecc953bSthorpej i->i_atdeva = iba; 10545ecc953bSthorpej i->i_cfflags = flags; 10555ecc953bSthorpej 10565ecc953bSthorpej *iba->d_ipp = i; 10575ecc953bSthorpej iba->d_ipp = &i->i_asame; 10585ecc953bSthorpej 10595ecc953bSthorpej /* all done, fall into ... */ 10605ecc953bSthorpej bad: 10615ecc953bSthorpej nvfreel(loclist); 10625ecc953bSthorpej return; 10635ecc953bSthorpej } 10645ecc953bSthorpej 10655ecc953bSthorpej void 10667b7c582aScube deldevi(const char *name, const char *at) 10675ecc953bSthorpej { 10687b7c582aScube struct devi *firsti, *i; 10695ecc953bSthorpej struct devbase *d; 10705ecc953bSthorpej int unit; 10715ecc953bSthorpej char base[NAMESIZE]; 10725ecc953bSthorpej 10735ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 10745ecc953bSthorpej error("invalid device name `%s'", name); 10755ecc953bSthorpej return; 10765ecc953bSthorpej } 10775ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 10785ecc953bSthorpej if (d == NULL) { 10795ecc953bSthorpej error("%s: unknown device `%s'", name, base); 10805ecc953bSthorpej return; 10815ecc953bSthorpej } 10825ecc953bSthorpej if (d->d_ispseudo) { 10835ecc953bSthorpej error("%s: %s is a pseudo-device", name, base); 10845ecc953bSthorpej return; 10855ecc953bSthorpej } 10865ecc953bSthorpej if ((firsti = ht_lookup(devitab, name)) == NULL) { 10875ecc953bSthorpej error("`%s' not defined", name); 10885ecc953bSthorpej return; 10895ecc953bSthorpej } 10907b7c582aScube if (at == NULL && firsti->i_at == NULL) { 1091e499d8b5Scube /* 'at root' */ 10927b7c582aScube remove_devi(firsti); 10937b7c582aScube return; 10947b7c582aScube } else if (at != NULL) 10957b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 10965ecc953bSthorpej if (strcmp(at, i->i_at) == 0) { 10977b7c582aScube remove_devi(i); 10985ecc953bSthorpej return; 10995ecc953bSthorpej } 11007b7c582aScube error("`%s' at `%s' not found", name, at ? at : "root"); 1101e499d8b5Scube } 11025ecc953bSthorpej 11037b7c582aScube static void 11047b7c582aScube remove_devi(struct devi *i) 11057b7c582aScube { 11067b7c582aScube struct devbase *d = i->i_base; 11077b7c582aScube struct devi *f, *j, **ppi; 11087b7c582aScube struct deva *iba; 11097b7c582aScube 11107b7c582aScube f = ht_lookup(devitab, i->i_name); 11116a6299ebScube if (f == NULL) 11126a6299ebScube panic("remove_devi(): instance %s disappeared from devitab", 11136a6299ebScube i->i_name); 11147b7c582aScube 1115e499d8b5Scube /* 1116e499d8b5Scube * We have the device instance, i. 1117e499d8b5Scube * We have to: 1118e499d8b5Scube * - delete the alias 1119e499d8b5Scube * 1120e499d8b5Scube * If the devi was an alias of an already listed devi, all is 1121e499d8b5Scube * good we don't have to do more. 1122e499d8b5Scube * If it was the first alias, we have to replace i's entry in 1123e499d8b5Scube * d's list by its first alias. 1124e499d8b5Scube * If it was the only entry, we must remove i's entry from d's 1125e499d8b5Scube * list. 1126e499d8b5Scube */ 11277b7c582aScube if (i != f) { 11287b7c582aScube for (j = f; j->i_alias != i; j = j->i_alias); 11297b7c582aScube j->i_alias = i->i_alias; 11303b405775Scube } else { 11313b405775Scube if (i->i_alias == NULL) { 1132e499d8b5Scube /* No alias, must unlink the entry from devitab */ 11337b7c582aScube ht_remove(devitab, i->i_name); 11347b7c582aScube j = i->i_bsame; 11353b405775Scube } else { 1136e499d8b5Scube /* Or have the first alias replace i in d's list */ 1137e499d8b5Scube i->i_alias->i_bsame = i->i_bsame; 11387b7c582aScube j = i->i_alias; 11397b7c582aScube if (i == f) 11407b7c582aScube ht_replace(devitab, i->i_name, i->i_alias); 11413b405775Scube } 11423b405775Scube 1143e499d8b5Scube /* 1144e499d8b5Scube * - remove/replace the instance from the devbase's list 1145e499d8b5Scube * 1146e499d8b5Scube * A double-linked list would make this much easier. Oh, well, 1147e499d8b5Scube * what is done is done. 1148e499d8b5Scube */ 1149e499d8b5Scube for (ppi = &d->d_ihead; 1150e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_bsame != i; 1151e499d8b5Scube ppi = &(*ppi)->i_bsame); 1152e499d8b5Scube if (*ppi == NULL) 1153c3414672Scube panic("deldev: dev (%s) doesn't list the devi" 1154c3414672Scube " (%s at %s)", d->d_name, i->i_name, i->i_at); 11557b7c582aScube f = *ppi; 11567b7c582aScube if (f == i) 1157c3414672Scube /* That implies d->d_ihead == i */ 11587b7c582aScube *ppi = j; 1159e499d8b5Scube else 11607b7c582aScube (*ppi)->i_bsame = j; 1161e499d8b5Scube if (d->d_ipp == &i->i_bsame) { 11623b405775Scube if (i->i_alias == NULL) { 11637b7c582aScube if (f == i) 1164e499d8b5Scube d->d_ipp = &d->d_ihead; 1165e499d8b5Scube else 11667b7c582aScube d->d_ipp = &f->i_bsame; 11673b405775Scube } else 11683b405775Scube d->d_ipp = &i->i_alias->i_bsame; 1169e499d8b5Scube } 1170e499d8b5Scube } 1171e499d8b5Scube /* 1172e499d8b5Scube * - delete the attachment instance 1173e499d8b5Scube */ 1174e499d8b5Scube iba = i->i_atdeva; 1175e499d8b5Scube for (ppi = &iba->d_ihead; 1176e499d8b5Scube *ppi != NULL && *ppi != i && (*ppi)->i_asame != i; 1177e499d8b5Scube ppi = &(*ppi)->i_asame); 1178e499d8b5Scube if (*ppi == NULL) 1179e499d8b5Scube panic("deldev: deva (%s) doesn't list the devi (%s)", 1180e499d8b5Scube iba->d_name, i->i_name); 11817b7c582aScube f = *ppi; 11827b7c582aScube if (f == i) 1183c3414672Scube /* That implies iba->d_ihead == i */ 1184e499d8b5Scube *ppi = i->i_asame; 1185e499d8b5Scube else 1186e499d8b5Scube (*ppi)->i_asame = i->i_asame; 1187e499d8b5Scube if (iba->d_ipp == &i->i_asame) { 11887b7c582aScube if (f == i) 1189e499d8b5Scube iba->d_ipp = &iba->d_ihead; 1190e499d8b5Scube else 11917b7c582aScube iba->d_ipp = &f->i_asame; 1192e499d8b5Scube } 1193e499d8b5Scube /* 1194e499d8b5Scube * - delete the pspec 1195e499d8b5Scube */ 1196e499d8b5Scube if (i->i_pspec) { 1197e499d8b5Scube struct pspec *p = i->i_pspec; 1198e499d8b5Scube struct nvlist *nv, *onv; 1199e499d8b5Scube 1200e499d8b5Scube /* Double-linked nvlist anyone? */ 1201c0024066Scube for (nv = p->p_devs; nv->nv_next != NULL; nv = nv->nv_next) { 1202e499d8b5Scube if (nv->nv_next && nv->nv_next->nv_ptr == i) { 1203e499d8b5Scube onv = nv->nv_next; 1204e499d8b5Scube nv->nv_next = onv->nv_next; 1205e499d8b5Scube nvfree(onv); 1206e499d8b5Scube break; 1207c0024066Scube } 1208c0024066Scube if (nv->nv_ptr == i) { 1209e499d8b5Scube /* nv is p->p_devs in that case */ 1210e499d8b5Scube p->p_devs = nv->nv_next; 1211e499d8b5Scube nvfree(nv); 1212e499d8b5Scube break; 1213e499d8b5Scube } 1214e499d8b5Scube } 1215e499d8b5Scube if (p->p_devs == NULL) 1216e499d8b5Scube TAILQ_REMOVE(&allpspecs, p, p_list); 1217e499d8b5Scube } 1218e499d8b5Scube /* 1219e499d8b5Scube * - delete the alldevi entry 1220e499d8b5Scube */ 1221e499d8b5Scube TAILQ_REMOVE(&alldevi, i, i_next); 1222e499d8b5Scube ndevi--; 12237aa6070dScube /* 12247aa6070dScube * Put it in deaddevitab 1225a31ff6b4Scube * 1226a31ff6b4Scube * Each time a devi is removed, devilevel is increased so that later on 1227a31ff6b4Scube * it is possible to tell if an instance was added before or after the 1228a31ff6b4Scube * removal of its parent. 1229a31ff6b4Scube * 1230a31ff6b4Scube * For active instances, i_level contains the number of devi removed so 1231a31ff6b4Scube * far, and for dead devis, it contains its index. 12327aa6070dScube */ 1233a31ff6b4Scube i->i_level = devilevel++; 12347aa6070dScube i->i_alias = NULL; 12357aa6070dScube f = ht_lookup(deaddevitab, i->i_name); 12367aa6070dScube if (f == NULL) { 12377aa6070dScube if (ht_insert(deaddevitab, i->i_name, i)) 12387aa6070dScube panic("remove_devi(%s) - can't add to deaddevitab", 12397aa6070dScube i->i_name); 12407aa6070dScube } else { 12417aa6070dScube for (j = f; j->i_alias != NULL; j = j->i_alias); 12427aa6070dScube j->i_alias = i; 12437aa6070dScube } 1244e499d8b5Scube /* 12455d1e8b27Swiz * - reconstruct d->d_umax 1246e499d8b5Scube */ 1247e499d8b5Scube d->d_umax = 0; 1248e499d8b5Scube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 1249e499d8b5Scube if (i->i_unit >= d->d_umax) 1250e499d8b5Scube d->d_umax = i->i_unit + 1; 12515ecc953bSthorpej } 12525ecc953bSthorpej 12535ecc953bSthorpej void 12547b7c582aScube deldeva(const char *at) 12557b7c582aScube { 12567b7c582aScube int unit; 12577b7c582aScube const char *cp; 12587b7c582aScube struct devbase *d, *ad; 12597b7c582aScube struct devi *i, *j; 12607b7c582aScube struct attr *a; 12617b7c582aScube struct pspec *p; 12627b7c582aScube struct nvlist *nv, *stack = NULL; 12637b7c582aScube 12647b7c582aScube if (at == NULL) { 12657b7c582aScube TAILQ_FOREACH(i, &alldevi, i_next) 12667b7c582aScube if (i->i_at == NULL) 12677b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 12687b7c582aScube } else { 12697b7c582aScube int l; 12707b7c582aScube 12717b7c582aScube l = strlen(at) - 1; 12727b7c582aScube if (at[l] == '?' || isdigit((unsigned char)at[l])) { 12737b7c582aScube char base[NAMESIZE]; 12747b7c582aScube 12757b7c582aScube if (split(at, l+1, base, sizeof base, &unit)) { 12767b7c582aScube error("invalid attachment name `%s'", at); 12777b7c582aScube return; 12787b7c582aScube } 12797b7c582aScube cp = intern(base); 12807b7c582aScube } else { 12817b7c582aScube cp = intern(at); 12827b7c582aScube unit = STAR; 12837b7c582aScube } 12847b7c582aScube 12857b7c582aScube ad = ht_lookup(devbasetab, cp); 12867b7c582aScube a = ht_lookup(attrtab, cp); 12877b7c582aScube if (a == NULL) { 12887b7c582aScube error("unknown attachment attribute or device `%s'", 12897b7c582aScube cp); 12907b7c582aScube return; 12917b7c582aScube } 12927b7c582aScube if (!a->a_iattr) { 12937b7c582aScube error("plain attribute `%s' cannot have children", 12947b7c582aScube a->a_name); 12957b7c582aScube return; 12967b7c582aScube } 12977b7c582aScube 12987b7c582aScube /* 12997b7c582aScube * remove_devi() makes changes to the devbase's list and the 13007b7c582aScube * alias list, * so the actual deletion of the instances must 13017b7c582aScube * be delayed. 13027b7c582aScube */ 13037b7c582aScube for (nv = a->a_devs; nv != NULL; nv = nv->nv_next) { 13047b7c582aScube d = nv->nv_ptr; 13057b7c582aScube for (i = d->d_ihead; i != NULL; i = i->i_bsame) 13067b7c582aScube for (j = i; j != NULL; j = j->i_alias) { 13077b7c582aScube /* Ignore devices at root */ 13087b7c582aScube if (j->i_at == NULL) 13097b7c582aScube continue; 13107b7c582aScube p = j->i_pspec; 13117b7c582aScube /* 13127b7c582aScube * There are three cases: 13137b7c582aScube * 13147b7c582aScube * 1. unit is not STAR. Consider 'at' 13157b7c582aScube * to be explicit, even if it 13167b7c582aScube * references an interface 13177b7c582aScube * attribute. 13187b7c582aScube * 13197b7c582aScube * 2. unit is STAR and 'at' references 13207b7c582aScube * a real device. Look for pspec 13217b7c582aScube * that have a matching p_atdev 13227b7c582aScube * field. 13237b7c582aScube * 13247b7c582aScube * 3. unit is STAR and 'at' references 13257b7c582aScube * an interface attribute. Look 13267b7c582aScube * for pspec that have a matching 13277b7c582aScube * p_iattr field. 13287b7c582aScube */ 13297b7c582aScube if ((unit != STAR && /* Case */ 13307b7c582aScube !strcmp(j->i_at, at)) || /* 1 */ 13317b7c582aScube (unit == STAR && 13327b7c582aScube ((ad != NULL && /* Case */ 13337b7c582aScube p->p_atdev == ad) || /* 2 */ 13347b7c582aScube (ad == NULL && /* Case */ 13357b7c582aScube p->p_iattr == a)))) /* 3 */ 13367b7c582aScube stack = newnv(NULL, NULL, j, 0, 13377b7c582aScube stack); 13387b7c582aScube } 13397b7c582aScube } 13407b7c582aScube } 13417b7c582aScube 13427b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 13437b7c582aScube remove_devi(nv->nv_ptr); 1344e50e4ee4Scube nvfreel(stack); 13457b7c582aScube } 13467b7c582aScube 13477b7c582aScube void 13487b7c582aScube deldev(const char *name) 13497b7c582aScube { 13507b7c582aScube int l; 13517b7c582aScube struct devi *firsti, *i; 13527b7c582aScube struct nvlist *nv, *stack = NULL; 13537b7c582aScube 13547b7c582aScube l = strlen(name) - 1; 13557b7c582aScube if (name[l] == '*' || isdigit((unsigned char)name[l])) { 13567b7c582aScube /* `no mydev0' or `no mydev*' */ 13577b7c582aScube firsti = ht_lookup(devitab, name); 13587b7c582aScube if (firsti == NULL) { 13597b7c582aScube error("unknown instance %s", name); 13607b7c582aScube return; 13617b7c582aScube } 13627b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 13637b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 13647b7c582aScube } else { 13657b7c582aScube struct devbase *d = ht_lookup(devbasetab, name); 13667b7c582aScube 13677b7c582aScube if (d == NULL) { 13687b7c582aScube error("unknown device %s", name); 13697b7c582aScube return; 13707b7c582aScube } 137171af9028Scube if (d->d_ispseudo) { 137271af9028Scube error("%s is a pseudo-device; " 137371af9028Scube "use \"no pseudo-device %s\" instead", name, 137471af9028Scube name); 137571af9028Scube return; 137671af9028Scube } 13777b7c582aScube 13787b7c582aScube for (firsti = d->d_ihead; firsti != NULL; 13797b7c582aScube firsti = firsti->i_bsame) 13807b7c582aScube for (i = firsti; i != NULL; i = i->i_alias) 13817b7c582aScube stack = newnv(NULL, NULL, i, 0, stack); 13827b7c582aScube } 13837b7c582aScube 13847b7c582aScube for (nv = stack; nv != NULL; nv = nv->nv_next) 13857b7c582aScube remove_devi(nv->nv_ptr); 1386e50e4ee4Scube nvfreel(stack); 13877b7c582aScube } 13887b7c582aScube 13897b7c582aScube void 13905ecc953bSthorpej addpseudo(const char *name, int number) 13915ecc953bSthorpej { 13925ecc953bSthorpej struct devbase *d; 13935ecc953bSthorpej struct devi *i; 13945ecc953bSthorpej 13955ecc953bSthorpej d = ht_lookup(devbasetab, name); 13965ecc953bSthorpej if (d == NULL) { 13975ecc953bSthorpej error("undefined pseudo-device %s", name); 13985ecc953bSthorpej return; 13995ecc953bSthorpej } 14005ecc953bSthorpej if (!d->d_ispseudo) { 14015ecc953bSthorpej error("%s is a real device, not a pseudo-device", name); 14025ecc953bSthorpej return; 14035ecc953bSthorpej } 14045ecc953bSthorpej if (ht_lookup(devitab, name) != NULL) { 14055ecc953bSthorpej error("`%s' already defined", name); 14065ecc953bSthorpej return; 14075ecc953bSthorpej } 14085ecc953bSthorpej i = newdevi(name, number - 1, d); /* foo 16 => "foo0..foo15" */ 14095ecc953bSthorpej if (ht_insert(devitab, name, i)) 14105ecc953bSthorpej panic("addpseudo(%s)", name); 14117b7c582aScube /* Useful to retrieve the instance from the devbase */ 14127b7c582aScube d->d_ihead = i; 14137aa6070dScube i->i_active = DEVI_ACTIVE; 14145ecc953bSthorpej TAILQ_INSERT_TAIL(&allpseudo, i, i_next); 14155ecc953bSthorpej } 14165ecc953bSthorpej 14175ecc953bSthorpej void 14185ecc953bSthorpej delpseudo(const char *name) 14195ecc953bSthorpej { 14205ecc953bSthorpej struct devbase *d; 14215ecc953bSthorpej struct devi *i; 14225ecc953bSthorpej 14235ecc953bSthorpej d = ht_lookup(devbasetab, name); 14245ecc953bSthorpej if (d == NULL) { 14255ecc953bSthorpej error("undefined pseudo-device %s", name); 14265ecc953bSthorpej return; 14275ecc953bSthorpej } 14285ecc953bSthorpej if (!d->d_ispseudo) { 14295ecc953bSthorpej error("%s is a real device, not a pseudo-device", name); 14305ecc953bSthorpej return; 14315ecc953bSthorpej } 14325ecc953bSthorpej if ((i = ht_lookup(devitab, name)) == NULL) { 14335ecc953bSthorpej error("`%s' not defined", name); 14345ecc953bSthorpej return; 14355ecc953bSthorpej } 14365ecc953bSthorpej d->d_umax = 0; /* clear neads-count entries */ 14377aa6070dScube d->d_ihead = NULL; /* make sure it won't be considered active */ 14385ecc953bSthorpej TAILQ_REMOVE(&allpseudo, i, i_next); 14395ecc953bSthorpej if (ht_remove(devitab, name)) 14405ecc953bSthorpej panic("delpseudo(%s) - can't remove from devitab", name); 14417aa6070dScube if (ht_insert(deaddevitab, name, i)) 14427aa6070dScube panic("delpseudo(%s) - can't add to deaddevitab", name); 14435ecc953bSthorpej } 14445ecc953bSthorpej 14455ecc953bSthorpej void 14465ecc953bSthorpej adddevm(const char *name, int cmajor, int bmajor, struct nvlist *options) 14475ecc953bSthorpej { 14485ecc953bSthorpej struct devm *dm; 14495ecc953bSthorpej 14505ecc953bSthorpej if (cmajor < -1 || cmajor >= 4096) { 14515ecc953bSthorpej error("character major %d is invalid", cmajor); 14525ecc953bSthorpej nvfreel(options); 14535ecc953bSthorpej return; 14545ecc953bSthorpej } 14555ecc953bSthorpej 14565ecc953bSthorpej if (bmajor < -1 || bmajor >= 4096) { 14575ecc953bSthorpej error("block major %d is invalid", bmajor); 14585ecc953bSthorpej nvfreel(options); 14595ecc953bSthorpej return; 14605ecc953bSthorpej } 14615ecc953bSthorpej if (cmajor == -1 && bmajor == -1) { 14625ecc953bSthorpej error("both character/block majors are not specified"); 14635ecc953bSthorpej nvfreel(options); 14645ecc953bSthorpej return; 14655ecc953bSthorpej } 14665ecc953bSthorpej 14675ecc953bSthorpej dm = ecalloc(1, sizeof(*dm)); 14685ecc953bSthorpej dm->dm_srcfile = yyfile; 14695ecc953bSthorpej dm->dm_srcline = currentline(); 14705ecc953bSthorpej dm->dm_name = name; 14715ecc953bSthorpej dm->dm_cmajor = cmajor; 14725ecc953bSthorpej dm->dm_bmajor = bmajor; 14735ecc953bSthorpej dm->dm_opts = options; 14745ecc953bSthorpej 14755ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevms, dm, dm_next); 14765ecc953bSthorpej 14775ecc953bSthorpej maxcdevm = MAX(maxcdevm, dm->dm_cmajor); 14785ecc953bSthorpej maxbdevm = MAX(maxbdevm, dm->dm_bmajor); 14795ecc953bSthorpej } 14805ecc953bSthorpej 14817aa6070dScube int 14825ecc953bSthorpej fixdevis(void) 14835ecc953bSthorpej { 14845ecc953bSthorpej struct devi *i; 14857aa6070dScube int error = 0; 14865ecc953bSthorpej 14875ecc953bSthorpej TAILQ_FOREACH(i, &alldevi, i_next) 14887aa6070dScube if (i->i_active == DEVI_ACTIVE) 14895ecc953bSthorpej selectbase(i->i_base, i->i_atdeva); 14907aa6070dScube else if (i->i_active == DEVI_ORPHAN) { 1491c130d400Scube /* 1492c130d400Scube * At this point, we can't have instances for which 1493c130d400Scube * i_at or i_pspec are NULL. 1494c130d400Scube */ 14957aa6070dScube ++error; 14960dbd1c0eScube xerror(i->i_srcfile, i->i_lineno, 14970dbd1c0eScube "`%s at %s' is orphaned (%s `%s' found)", 1498c130d400Scube i->i_name, i->i_at, i->i_pspec->p_atunit == WILD ? 1499c130d400Scube "nothing matching" : "no", i->i_at); 15007aa6070dScube } else if (vflag && i->i_active == DEVI_IGNORED) 15010dbd1c0eScube xwarn(i->i_srcfile, i->i_lineno, "ignoring explicitely" 15029ea755ebScube " orphaned instance `%s at %s'", i->i_name, 15030dbd1c0eScube i->i_at); 15047aa6070dScube 15057aa6070dScube if (error) 15067aa6070dScube return error; 15075ecc953bSthorpej 15085ecc953bSthorpej TAILQ_FOREACH(i, &allpseudo, i_next) 15097aa6070dScube if (i->i_active == DEVI_ACTIVE) 15105ecc953bSthorpej selectbase(i->i_base, NULL); 15117aa6070dScube return 0; 15125ecc953bSthorpej } 15135ecc953bSthorpej 15145ecc953bSthorpej /* 15155ecc953bSthorpej * Look up a parent spec, creating a new one if it does not exist. 15165ecc953bSthorpej */ 15175ecc953bSthorpej static struct pspec * 15185ecc953bSthorpej getpspec(struct attr *attr, struct devbase *ab, int atunit) 15195ecc953bSthorpej { 15205ecc953bSthorpej struct pspec *p; 15215ecc953bSthorpej 15225ecc953bSthorpej TAILQ_FOREACH(p, &allpspecs, p_list) { 15235ecc953bSthorpej if (p->p_iattr == attr && 15245ecc953bSthorpej p->p_atdev == ab && 15255ecc953bSthorpej p->p_atunit == atunit) 15265ecc953bSthorpej return (p); 15275ecc953bSthorpej } 15285ecc953bSthorpej 15295ecc953bSthorpej p = ecalloc(1, sizeof(*p)); 15305ecc953bSthorpej 15315ecc953bSthorpej p->p_iattr = attr; 15325ecc953bSthorpej p->p_atdev = ab; 15335ecc953bSthorpej p->p_atunit = atunit; 15345ecc953bSthorpej p->p_inst = npspecs++; 1535c130d400Scube p->p_active = 0; 15365ecc953bSthorpej 15375ecc953bSthorpej TAILQ_INSERT_TAIL(&allpspecs, p, p_list); 15385ecc953bSthorpej 15395ecc953bSthorpej return (p); 15405ecc953bSthorpej } 15415ecc953bSthorpej 15425ecc953bSthorpej /* 15435ecc953bSthorpej * Define a new instance of a specific device. 15445ecc953bSthorpej */ 15455ecc953bSthorpej static struct devi * 15465ecc953bSthorpej getdevi(const char *name) 15475ecc953bSthorpej { 15485ecc953bSthorpej struct devi *i, *firsti; 15495ecc953bSthorpej struct devbase *d; 15505ecc953bSthorpej int unit; 15515ecc953bSthorpej char base[NAMESIZE]; 15525ecc953bSthorpej 15535ecc953bSthorpej if (split(name, strlen(name), base, sizeof base, &unit)) { 15545ecc953bSthorpej error("invalid device name `%s'", name); 15555ecc953bSthorpej return (NULL); 15565ecc953bSthorpej } 15575ecc953bSthorpej d = ht_lookup(devbasetab, intern(base)); 15585ecc953bSthorpej if (d == NULL) { 15595ecc953bSthorpej error("%s: unknown device `%s'", name, base); 15605ecc953bSthorpej return (NULL); 15615ecc953bSthorpej } 15625ecc953bSthorpej if (d->d_ispseudo) { 15635ecc953bSthorpej error("%s: %s is a pseudo-device", name, base); 15645ecc953bSthorpej return (NULL); 15655ecc953bSthorpej } 15665ecc953bSthorpej firsti = ht_lookup(devitab, name); 15675ecc953bSthorpej i = newdevi(name, unit, d); 15685ecc953bSthorpej if (firsti == NULL) { 15695ecc953bSthorpej if (ht_insert(devitab, name, i)) 15705ecc953bSthorpej panic("getdevi(%s)", name); 15715ecc953bSthorpej *d->d_ipp = i; 15725ecc953bSthorpej d->d_ipp = &i->i_bsame; 15735ecc953bSthorpej } else { 15745ecc953bSthorpej while (firsti->i_alias) 15755ecc953bSthorpej firsti = firsti->i_alias; 15765ecc953bSthorpej firsti->i_alias = i; 15775ecc953bSthorpej } 15785ecc953bSthorpej TAILQ_INSERT_TAIL(&alldevi, i, i_next); 15795ecc953bSthorpej ndevi++; 15805ecc953bSthorpej return (i); 15815ecc953bSthorpej } 15825ecc953bSthorpej 15835ecc953bSthorpej static const char * 15845ecc953bSthorpej concat(const char *name, int c) 15855ecc953bSthorpej { 15865ecc953bSthorpej int len; 15875ecc953bSthorpej char buf[NAMESIZE]; 15885ecc953bSthorpej 15895ecc953bSthorpej len = strlen(name); 15905ecc953bSthorpej if (len + 2 > sizeof(buf)) { 15915ecc953bSthorpej error("device name `%s%c' too long", name, c); 15925ecc953bSthorpej len = sizeof(buf) - 2; 15935ecc953bSthorpej } 15945ecc953bSthorpej memmove(buf, name, len); 15955ecc953bSthorpej buf[len] = c; 15965ecc953bSthorpej buf[len + 1] = 0; 15975ecc953bSthorpej return (intern(buf)); 15985ecc953bSthorpej } 15995ecc953bSthorpej 16005ecc953bSthorpej const char * 16015ecc953bSthorpej starref(const char *name) 16025ecc953bSthorpej { 16035ecc953bSthorpej 16045ecc953bSthorpej return (concat(name, '*')); 16055ecc953bSthorpej } 16065ecc953bSthorpej 16075ecc953bSthorpej const char * 16085ecc953bSthorpej wildref(const char *name) 16095ecc953bSthorpej { 16105ecc953bSthorpej 16115ecc953bSthorpej return (concat(name, '?')); 16125ecc953bSthorpej } 16135ecc953bSthorpej 16145ecc953bSthorpej /* 16155ecc953bSthorpej * Split a name like "foo0" into base name (foo) and unit number (0). 16165ecc953bSthorpej * Return 0 on success. To make this useful for names like "foo0a", 16175ecc953bSthorpej * the length of the "foo0" part is one of the arguments. 16185ecc953bSthorpej */ 16195ecc953bSthorpej static int 16205ecc953bSthorpej split(const char *name, size_t nlen, char *base, size_t bsize, int *aunit) 16215ecc953bSthorpej { 16225ecc953bSthorpej const char *cp; 16235ecc953bSthorpej int c, l; 16245ecc953bSthorpej 16255ecc953bSthorpej l = nlen; 16265ecc953bSthorpej if (l < 2 || l >= bsize || isdigit((unsigned char)*name)) 16275ecc953bSthorpej return (1); 16285ecc953bSthorpej c = (u_char)name[--l]; 16295ecc953bSthorpej if (!isdigit(c)) { 16305ecc953bSthorpej if (c == '*') 16315ecc953bSthorpej *aunit = STAR; 16325ecc953bSthorpej else if (c == '?') 16335ecc953bSthorpej *aunit = WILD; 16345ecc953bSthorpej else 16355ecc953bSthorpej return (1); 16365ecc953bSthorpej } else { 16375ecc953bSthorpej cp = &name[l]; 16385ecc953bSthorpej while (isdigit((unsigned char)cp[-1])) 16395ecc953bSthorpej l--, cp--; 16405ecc953bSthorpej *aunit = atoi(cp); 16415ecc953bSthorpej } 16425ecc953bSthorpej memmove(base, name, l); 16435ecc953bSthorpej base[l] = 0; 16445ecc953bSthorpej return (0); 16455ecc953bSthorpej } 16465ecc953bSthorpej 16475ecc953bSthorpej void 16485ecc953bSthorpej selectattr(struct attr *a) 16495ecc953bSthorpej { 16505ecc953bSthorpej 16515ecc953bSthorpej (void)ht_insert(selecttab, a->a_name, (char *)a->a_name); 16525ecc953bSthorpej } 16535ecc953bSthorpej 16545ecc953bSthorpej /* 16555ecc953bSthorpej * We have an instance of the base foo, so select it and all its 16565ecc953bSthorpej * attributes for "optional foo". 16575ecc953bSthorpej */ 16585ecc953bSthorpej static void 16595ecc953bSthorpej selectbase(struct devbase *d, struct deva *da) 16605ecc953bSthorpej { 16615ecc953bSthorpej struct attr *a; 16625ecc953bSthorpej struct nvlist *nv; 16635ecc953bSthorpej 16645ecc953bSthorpej (void)ht_insert(selecttab, d->d_name, (char *)d->d_name); 16655ecc953bSthorpej for (nv = d->d_attrs; nv != NULL; nv = nv->nv_next) { 16665ecc953bSthorpej a = nv->nv_ptr; 16675ecc953bSthorpej expandattr(a, selectattr); 16685ecc953bSthorpej } 16695ecc953bSthorpej if (da != NULL) { 16705ecc953bSthorpej (void)ht_insert(selecttab, da->d_name, (char *)da->d_name); 16715ecc953bSthorpej for (nv = da->d_attrs; nv != NULL; nv = nv->nv_next) { 16725ecc953bSthorpej a = nv->nv_ptr; 16735ecc953bSthorpej expandattr(a, selectattr); 16745ecc953bSthorpej } 16755ecc953bSthorpej } 16765ecc953bSthorpej } 16775ecc953bSthorpej 16785ecc953bSthorpej /* 16795ecc953bSthorpej * Is the given pointer on the given list of pointers? 16805ecc953bSthorpej */ 16815ecc953bSthorpej static int 16825ecc953bSthorpej onlist(struct nvlist *nv, void *ptr) 16835ecc953bSthorpej { 16845ecc953bSthorpej for (; nv != NULL; nv = nv->nv_next) 16855ecc953bSthorpej if (nv->nv_ptr == ptr) 16865ecc953bSthorpej return (1); 16875ecc953bSthorpej return (0); 16885ecc953bSthorpej } 16895ecc953bSthorpej 16905ecc953bSthorpej static char * 16915ecc953bSthorpej extend(char *p, const char *name) 16925ecc953bSthorpej { 16935ecc953bSthorpej int l; 16945ecc953bSthorpej 16955ecc953bSthorpej l = strlen(name); 16965ecc953bSthorpej memmove(p, name, l); 16975ecc953bSthorpej p += l; 16985ecc953bSthorpej *p++ = ','; 16995ecc953bSthorpej *p++ = ' '; 17005ecc953bSthorpej return (p); 17015ecc953bSthorpej } 17025ecc953bSthorpej 17035ecc953bSthorpej /* 17045ecc953bSthorpej * Check that we got all required locators, and default any that are 17055ecc953bSthorpej * given as "?" and have defaults. Return 0 on success. 17065ecc953bSthorpej */ 17075ecc953bSthorpej static const char ** 17085ecc953bSthorpej fixloc(const char *name, struct attr *attr, struct nvlist *got) 17095ecc953bSthorpej { 17105ecc953bSthorpej struct nvlist *m, *n; 17115ecc953bSthorpej int ord; 17125ecc953bSthorpej const char **lp; 17135ecc953bSthorpej int nmissing, nextra, nnodefault; 17145ecc953bSthorpej char *mp, *ep, *ndp; 17155ecc953bSthorpej char missing[1000], extra[1000], nodefault[1000]; 17165ecc953bSthorpej static const char *nullvec[1]; 17175ecc953bSthorpej 17185ecc953bSthorpej /* 17195ecc953bSthorpej * Look for all required locators, and number the given ones 17205ecc953bSthorpej * according to the required order. While we are numbering, 17215ecc953bSthorpej * set default values for defaulted locators. 17225ecc953bSthorpej */ 17235ecc953bSthorpej if (attr->a_loclen == 0) /* e.g., "at root" */ 17245ecc953bSthorpej lp = nullvec; 17255ecc953bSthorpej else 17265ecc953bSthorpej lp = emalloc((attr->a_loclen + 1) * sizeof(const char *)); 17275ecc953bSthorpej for (n = got; n != NULL; n = n->nv_next) 17285ecc953bSthorpej n->nv_int = -1; 17295ecc953bSthorpej nmissing = 0; 17305ecc953bSthorpej mp = missing; 17315ecc953bSthorpej /* yes, this is O(mn), but m and n should be small */ 17325ecc953bSthorpej for (ord = 0, m = attr->a_locs; m != NULL; m = m->nv_next, ord++) { 17335ecc953bSthorpej for (n = got; n != NULL; n = n->nv_next) { 17345ecc953bSthorpej if (n->nv_name == m->nv_name) { 17355ecc953bSthorpej n->nv_int = ord; 17365ecc953bSthorpej break; 17375ecc953bSthorpej } 17385ecc953bSthorpej } 17395ecc953bSthorpej if (n == NULL && m->nv_int == 0) { 17405ecc953bSthorpej nmissing++; 17415ecc953bSthorpej mp = extend(mp, m->nv_name); 17425ecc953bSthorpej } 17435ecc953bSthorpej lp[ord] = m->nv_str; 17445ecc953bSthorpej } 17455ecc953bSthorpej if (ord != attr->a_loclen) 17465ecc953bSthorpej panic("fixloc"); 17475ecc953bSthorpej lp[ord] = NULL; 17485ecc953bSthorpej nextra = 0; 17495ecc953bSthorpej ep = extra; 17505ecc953bSthorpej nnodefault = 0; 17515ecc953bSthorpej ndp = nodefault; 17525ecc953bSthorpej for (n = got; n != NULL; n = n->nv_next) { 17535ecc953bSthorpej if (n->nv_int >= 0) { 17545ecc953bSthorpej if (n->nv_str != NULL) 17555ecc953bSthorpej lp[n->nv_int] = n->nv_str; 17565ecc953bSthorpej else if (lp[n->nv_int] == NULL) { 17575ecc953bSthorpej nnodefault++; 17585ecc953bSthorpej ndp = extend(ndp, n->nv_name); 17595ecc953bSthorpej } 17605ecc953bSthorpej } else { 17615ecc953bSthorpej nextra++; 17625ecc953bSthorpej ep = extend(ep, n->nv_name); 17635ecc953bSthorpej } 17645ecc953bSthorpej } 17655ecc953bSthorpej if (nextra) { 17665ecc953bSthorpej ep[-2] = 0; /* kill ", " */ 17675ecc953bSthorpej error("%s: extraneous locator%s: %s", 17685ecc953bSthorpej name, nextra > 1 ? "s" : "", extra); 17695ecc953bSthorpej } 17705ecc953bSthorpej if (nmissing) { 17715ecc953bSthorpej mp[-2] = 0; 17725ecc953bSthorpej error("%s: must specify %s", name, missing); 17735ecc953bSthorpej } 17745ecc953bSthorpej if (nnodefault) { 17755ecc953bSthorpej ndp[-2] = 0; 17765ecc953bSthorpej error("%s: cannot wildcard %s", name, nodefault); 17775ecc953bSthorpej } 17785ecc953bSthorpej if (nmissing || nnodefault) { 17795ecc953bSthorpej free(lp); 17805ecc953bSthorpej lp = NULL; 17815ecc953bSthorpej } 17825ecc953bSthorpej return (lp); 17835ecc953bSthorpej } 1784437f8925Scube 1785437f8925Scube void 1786437f8925Scube setversion(int newver) 1787437f8925Scube { 1788437f8925Scube if (newver > CONFIG_VERSION) 1789437f8925Scube error("your sources require a newer version of config(1) " 1790437f8925Scube "-- please rebuild it."); 1791437f8925Scube else if (newver < CONFIG_MINVERSION) 1792437f8925Scube error("your sources are out of date -- please update."); 1793437f8925Scube else 1794437f8925Scube version = newver; 1795437f8925Scube } 1796