/* $NetBSD: main.c,v 1.16 2006/08/30 15:03:56 he Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratories. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)main.c 8.1 (Berkeley) 6/6/93 */ #if HAVE_NBTOOL_CONFIG_H #include "nbtool_config.h" #endif #ifndef MAKE_BOOTSTRAP #include #define COPYRIGHT(x) __COPYRIGHT(x) #else #define COPYRIGHT(x) static const char copyright[] = x #endif #ifndef lint COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "defs.h" #include "sem.h" #ifndef LINE_MAX #define LINE_MAX 1024 #endif int vflag; /* verbose output */ int Pflag; /* pack locators */ int yyparse(void); #ifndef MAKE_BOOTSTRAP extern int yydebug; #endif static struct hashtab *obsopttab; static struct hashtab *mkopttab; static struct nvlist **nextopt; static struct nvlist **nextmkopt; static struct nvlist **nextappmkopt; static struct nvlist **nextfsopt; static void usage(void); static void dependopts(void); static void do_depend(struct nvlist *); static void stop(void); static int do_option(struct hashtab *, struct nvlist ***, const char *, const char *, const char *); static int undo_option(struct hashtab *, struct nvlist **, struct nvlist ***, const char *, const char *); static int crosscheck(void); static int badstar(void); int main(int, char **); static int mksymlinks(void); static int mkident(void); static int devbase_has_dead_instances(const char *, void *, void *); static int devbase_has_any_instance(struct devbase *, int, int, int); static int check_dead_devi(const char *, void *, void *); static void kill_orphans(void); static void do_kill_orphans(struct devbase *, struct attr *, struct devbase *, int); static int kill_orphans_cb(const char *, void *, void *); static int cfcrosscheck(struct config *, const char *, struct nvlist *); static const char *strtolower(const char *); void defopt(struct hashtab *ht, const char *fname, struct nvlist *opts, struct nvlist *deps, int obs); #define LOGCONFIG_LARGE "INCLUDE_CONFIG_FILE" #define LOGCONFIG_SMALL "INCLUDE_JUST_CONFIG" static void logconfig_start(void); static void logconfig_end(void); static FILE *cfg; static time_t cfgtime; static int is_elf(const char *); static int extract_config(const char *, const char *, int); int badfilename(const char *fname); const char *progname; int main(int argc, char **argv) { char *p, cname[20]; const char *last_component; int pflag, xflag, ch, removeit; setprogname(argv[0]); pflag = 0; xflag = 0; while ((ch = getopt(argc, argv, "DPgpvb:s:x")) != -1) { switch (ch) { #ifndef MAKE_BOOTSTRAP case 'D': yydebug = 1; break; #endif case 'P': Pflag = 1; break; case 'g': /* * In addition to DEBUG, you probably wanted to * set "options KGDB" and maybe others. We could * do that for you, but you really should just * put them in the config file. */ (void)fprintf(stderr, "config: -g is obsolete (use makeoptions DEBUG=\"-g\")\n"); usage(); case 'p': /* * Essentially the same as makeoptions PROF="-pg", * but also changes the path from ../../compile/FOO * to ../../compile/FOO.PROF; i.e., compile a * profiling kernel based on a typical "regular" * kernel. * * Note that if you always want profiling, you * can (and should) use a "makeoptions" line. */ pflag = 1; break; case 'v': vflag = 1; break; case 'b': builddir = optarg; break; case 's': srcdir = optarg; break; case 'x': xflag = 1; break; case '?': default: usage(); } } argc -= optind; argv += optind; if (argc > 1) { usage(); } if (xflag && (builddir != NULL || srcdir != NULL || Pflag || pflag || vflag)) { (void)fprintf(stderr, "config: -x must be used alone\n"); exit(1); } if (xflag) { #ifdef __NetBSD__ conffile = (argc == 1) ? argv[0] : _PATH_UNIX; #else if (argc == 0) { (void)fprintf(stderr, "config: no kernel supplied\n"); exit(1); } #endif if (!is_elf(conffile)) { (void)fprintf(stderr, "config: %s: not a binary kernel\n", conffile); exit(1); } if (!extract_config(conffile, "stdout", STDOUT_FILENO)) { (void)fprintf(stderr, "config: %s does not contain embedded " "configuration data\n", conffile); exit(2); } exit(0); } conffile = (argc == 1) ? argv[0] : "CONFIG"; if (firstfile(conffile)) { (void)fprintf(stderr, "config: cannot read %s: %s\n", conffile, strerror(errno)); exit(2); } /* * Init variables. */ minmaxusers = 1; maxmaxusers = 10000; initintern(); initfiles(); initsem(); ident = NULL; devbasetab = ht_new(); devroottab = ht_new(); devatab = ht_new(); devitab = ht_new(); deaddevitab = ht_new(); selecttab = ht_new(); needcnttab = ht_new(); opttab = ht_new(); mkopttab = ht_new(); condmkopttab = ht_new(); fsopttab = ht_new(); deffstab = ht_new(); defopttab = ht_new(); defparamtab = ht_new(); defflagtab = ht_new(); optfiletab = ht_new(); obsopttab = ht_new(); bdevmtab = ht_new(); maxbdevm = 0; cdevmtab = ht_new(); maxcdevm = 0; nextopt = &options; nextmkopt = &mkoptions; nextappmkopt = &appmkoptions; nextfsopt = &fsoptions; /* * Handle profiling (must do this before we try to create any * files). */ last_component = strrchr(conffile, '/'); last_component = (last_component) ? last_component + 1 : conffile; if (pflag) { p = emalloc(strlen(last_component) + 17); (void)sprintf(p, "../compile/%s.PROF", last_component); (void)addmkoption(intern("PROF"), "-pg"); (void)addoption(intern("GPROF"), NULL); } else { p = emalloc(strlen(last_component) + 13); (void)sprintf(p, "../compile/%s", last_component); } defbuilddir = (argc == 0) ? "." : p; removeit = 0; if (is_elf(conffile)) { const char *tmpdir; int cfd; if (builddir == NULL) { (void)fprintf(stderr, "config: build directory must be specified with " "binary kernels\n"); exit(1); } /* Open temporary configuration file */ tmpdir = getenv("TMPDIR"); if (tmpdir == NULL) tmpdir = "/tmp"; snprintf(cname, sizeof(cname), "%s/config.tmp.XXXXXX", tmpdir); cfd = mkstemp(cname); if (cfd == -1) { fprintf(stderr, "config: cannot create %s: %s", cname, strerror(errno)); exit(2); } printf("Using configuration data embedded in kernel...\n"); if (!extract_config(conffile, cname, cfd)) { (void)fprintf(stderr, "config: %s does not contain embedded " "configuration data\n", conffile); exit(2); } removeit = 1; close(cfd); firstfile(cname); } /* * Parse config file (including machine definitions). */ logconfig_start(); if (yyparse()) stop(); logconfig_end(); if (removeit) unlink(cname); /* * Detect and properly ignore orphaned devices */ kill_orphans(); /* * Select devices and pseudo devices and their attributes */ if (fixdevis()) stop(); /* * Deal with option dependencies. */ dependopts(); /* * Fix (as in `set firmly in place') files. */ if (fixfiles()) stop(); /* * Fix objects and libraries. */ if (fixobjects()) stop(); /* * Fix device-majors. */ if (fixdevsw()) stop(); /* * Perform cross-checking. */ if (maxusers == 0) { if (defmaxusers) { (void)printf("maxusers not specified; %d assumed\n", defmaxusers); maxusers = defmaxusers; } else { (void)fprintf(stderr, "config: need \"maxusers\" line\n"); errors++; } } if (fsoptions == NULL) { (void)fprintf(stderr, "config: need at least one \"file-system\" line\n"); errors++; } if (crosscheck() || errors) stop(); /* * Squeeze things down and finish cross-checks (STAR checks must * run after packing). */ pack(); if (badstar()) stop(); /* * Ready to go. Build all the various files. */ if (mksymlinks() || mkmakefile() || mkheaders() || mkswap() || mkioconf() || (do_devsw ? mkdevsw() : 0) || mkident()) stop(); (void)printf("Build directory is %s\n", builddir); (void)printf("Don't forget to run \"make depend\"\n"); exit(0); } static void usage(void) { (void)fputs("usage: config [-Ppv] [-s srcdir] [-b builddir] " "[sysname]\n", stderr); (void)fputs(" config -x [kernel-file]\n", stderr); exit(1); } /* * Set any options that are implied by other options. */ static void dependopts(void) { struct nvlist *nv, *opt; for (nv = options; nv != NULL; nv = nv->nv_next) { if ((opt = find_declared_option(nv->nv_name)) != NULL) { for (opt = opt->nv_ptr; opt != NULL; opt = opt->nv_next) { do_depend(opt); } } } for (nv = fsoptions; nv != NULL; nv = nv->nv_next) { if ((opt = find_declared_option(nv->nv_name)) != NULL) { for (opt = opt->nv_ptr; opt != NULL; opt = opt->nv_next) { do_depend(opt); } } } } static void do_depend(struct nvlist *nv) { struct nvlist *nextnv; struct attr *a; if (nv != NULL && (nv->nv_flags & NV_DEPENDED) == 0) { nv->nv_flags |= NV_DEPENDED; /* * If the dependency is an attribute, then just add * it to the selecttab. */ if ((a = ht_lookup(attrtab, nv->nv_name)) != NULL) { if (a->a_iattr) panic("do_depend(%s): dep `%s' is an iattr", nv->nv_name, a->a_name); expandattr(a, selectattr); } else { if (ht_lookup(opttab, nv->nv_name) == NULL) addoption(nv->nv_name, NULL); if ((nextnv = find_declared_option(nv->nv_name)) != NULL) do_depend(nextnv->nv_ptr); } } } /* * Make a symlink for "machine" so that "#include " works, * and for the machine's CPU architecture, so that works as well. */ static int mksymlinks(void) { int ret; char *p, buf[MAXPATHLEN]; const char *q; struct nvlist *nv; snprintf(buf, sizeof(buf), "arch/%s/include", machine); p = sourcepath(buf); ret = unlink("machine"); if (ret && errno != ENOENT) (void)fprintf(stderr, "config: unlink(machine): %s\n", strerror(errno)); ret = symlink(p, "machine"); if (ret) (void)fprintf(stderr, "config: symlink(machine -> %s): %s\n", p, strerror(errno)); free(p); if (machinearch != NULL) { snprintf(buf, sizeof(buf), "arch/%s/include", machinearch); p = sourcepath(buf); q = machinearch; } else { p = estrdup("machine"); q = machine; } ret = unlink(q); if (ret && errno != ENOENT) (void)fprintf(stderr, "config: unlink(%s): %s\n", q, strerror(errno)); ret = symlink(p, q); if (ret) (void)fprintf(stderr, "config: symlink(%s -> %s): %s\n", q, p, strerror(errno)); free(p); for (nv = machinesubarches; nv != NULL; nv = nv->nv_next) { q = nv->nv_name; snprintf(buf, sizeof(buf), "arch/%s/include", q); p = sourcepath(buf); ret = unlink(q); if (ret && errno != ENOENT) (void)fprintf(stderr, "config: unlink(%s): %s\n", q, strerror(errno)); ret = symlink(p, q); if (ret) (void)fprintf(stderr, "config: symlink(%s -> %s): %s\n", q, p, strerror(errno)); free(p); } return (ret); } static __dead void stop(void) { (void)fprintf(stderr, "*** Stop.\n"); exit(1); } static void add_dependencies(struct nvlist *nv, struct nvlist *deps) { struct nvlist *dep; struct attr *a; /* Use nv_ptr to link any other options that are implied. */ nv->nv_ptr = deps; for (dep = deps; dep != NULL; dep = dep->nv_next) { /* * If the dependency is an attribute, it must not * be an interface attribute. Otherwise, it must * be a previously declared option. */ if ((a = ht_lookup(attrtab, dep->nv_name)) != NULL) { if (a->a_iattr) error("option `%s' dependency `%s' " "is an interface attribute", nv->nv_name, a->a_name); } else if (OPT_OBSOLETE(dep->nv_name)) { error("option `%s' dependency `%s' " "is obsolete", nv->nv_name, dep->nv_name); } else if (find_declared_option(dep->nv_name) == NULL) { error("option `%s' dependency `%s' " "is an unknown option", nv->nv_name, dep->nv_name); } } } /* * Define one or more file systems. If file system options file name is * specified, a preprocessor #define for that file system will be placed * in that file. In this case, only one file system may be specified. * Otherwise, no preprocessor #defines will be generated. */ void deffilesystem(const char *fname, struct nvlist *fses, struct nvlist *deps) { struct nvlist *nv; /* * Mark these options as ones to skip when creating the Makefile. */ for (nv = fses; nv != NULL; nv = nv->nv_next) { if (ht_insert(defopttab, nv->nv_name, nv)) { error("file system or option `%s' already defined", nv->nv_name); return; } /* * Also mark it as a valid file system, which may be * used in "file-system" directives in the config * file. */ if (ht_insert(deffstab, nv->nv_name, nv)) panic("file system `%s' already in table?!", nv->nv_name); if (fname != NULL) { /* * Only one file system allowed in this case. */ if (nv->nv_next != NULL) { error("only one file system per option " "file may be specified"); return; } if (ht_insert(optfiletab, fname, nv)) { error("option file `%s' already exists", fname); return; } } add_dependencies(nv, deps); } } /* * Sanity check a file name. */ int badfilename(const char *fname) { const char *n; /* * We're putting multiple options into one file. Sanity * check the file name. */ if (strchr(fname, '/') != NULL) { error("option file name contains a `/'"); return 1; } if ((n = strrchr(fname, '.')) == NULL || strcmp(n, ".h") != 0) { error("option file name does not end in `.h'"); return 1; } return 0; } /* * Search for a defined option (defopt, filesystem, etc), and if found, * return the option's struct nvlist. */ struct nvlist * find_declared_option(const char *name) { struct nvlist *option = NULL; if ((option = ht_lookup(defopttab, name)) != NULL || (option = ht_lookup(defparamtab, name)) != NULL || (option = ht_lookup(defflagtab, name)) != NULL || (option = ht_lookup(fsopttab, name)) != NULL) { return (option); } return (NULL); } /* * Define one or more standard options. If an option file name is specified, * place all options in one file with the specified name. Otherwise, create * an option file for each option. * record the option information in the specified table. */ void defopt(struct hashtab *ht, const char *fname, struct nvlist *opts, struct nvlist *deps, int obs) { struct nvlist *nv, *nextnv, *oldnv; const char *name; char buf[500]; if (fname != NULL && badfilename(fname)) { return; } /* * Mark these options as ones to skip when creating the Makefile. */ for (nv = opts; nv != NULL; nv = nextnv) { nextnv = nv->nv_next; /* An option name can be declared at most once. */ if (DEFINED_OPTION(nv->nv_name)) { error("file system or option `%s' already defined", nv->nv_name); return; } if (ht_insert(ht, nv->nv_name, nv)) { error("file system or option `%s' already defined", nv->nv_name); return; } if (fname == NULL) { /* * Each option will be going into its own file. * Convert the option name to lower case. This * lower case name will be used as the option * file name. */ (void) snprintf(buf, sizeof(buf), "opt_%s.h", strtolower(nv->nv_name)); name = intern(buf); } else { name = fname; } add_dependencies(nv, deps); /* * Remove this option from the parameter list before adding * it to the list associated with this option file. */ nv->nv_next = NULL; /* * Flag as obsolete, if requested. */ if (obs) { nv->nv_flags |= NV_OBSOLETE; (void)ht_insert(obsopttab, nv->nv_name, nv); } /* * Add this option file if we haven't seen it yet. * Otherwise, append to the list of options already * associated with this file. */ if ((oldnv = ht_lookup(optfiletab, name)) == NULL) { (void)ht_insert(optfiletab, name, nv); } else { while (oldnv->nv_next != NULL) oldnv = oldnv->nv_next; oldnv->nv_next = nv; } } } /* * Define one or more standard options. If an option file name is specified, * place all options in one file with the specified name. Otherwise, create * an option file for each option. */ void defoption(const char *fname, struct nvlist *opts, struct nvlist *deps) { warn("The use of `defopt' is deprecated"); defopt(defopttab, fname, opts, deps, 0); } /* * Define an option for which a value is required. */ void defparam(const char *fname, struct nvlist *opts, struct nvlist *deps, int obs) { defopt(defparamtab, fname, opts, deps, obs); } /* * Define an option which must not have a value, and which * emits a "needs-flag" style output. */ void defflag(const char *fname, struct nvlist *opts, struct nvlist *deps, int obs) { defopt(defflagtab, fname, opts, deps, obs); } /* * Add an option from "options FOO". Note that this selects things that * are "optional foo". */ void addoption(const char *name, const char *value) { const char *n; int is_fs, is_param, is_flag, is_opt, is_undecl, is_obs; /* * Figure out how this option was declared (if at all.) * XXX should use "params" and "flags" in config. * XXX crying out for a type field in a unified hashtab. */ is_fs = OPT_FSOPT(name); is_param = OPT_DEFPARAM(name); is_opt = OPT_DEFOPT(name); is_flag = OPT_DEFFLAG(name); is_obs = OPT_OBSOLETE(name); is_undecl = !DEFINED_OPTION(name); /* Warn and pretend the user had not selected the option */ if (is_obs) { warn("obsolete option `%s' will be ignored", name); return; } /* Make sure this is not a defined file system. */ if (is_fs) { error("`%s' is a defined file system", name); return; } /* A defparam must have a value */ if (is_param && value == NULL) { error("option `%s' must have a value", name); return; } /* A defflag must not have a value */ if (is_flag && value != NULL) { error("option `%s' must not have a value", name); return; } if (is_undecl && vflag) { warn("undeclared option `%s' added to IDENT", name); } if (do_option(opttab, &nextopt, name, value, "options")) return; /* make lowercase, then add to select table */ n = strtolower(name); (void)ht_insert(selecttab, n, (void *)n); } void deloption(const char *name) { if (undo_option(opttab, &options, &nextopt, name, "options")) return; if (undo_option(selecttab, NULL, NULL, strtolower(name), "options")) return; } /* * Add a file system option. This routine simply inserts the name into * a list of valid file systems, which is used to validate the root * file system type. The name is then treated like a standard option. */ void addfsoption(const char *name) { const char *n; /* Make sure this is a defined file system. */ if (!OPT_FSOPT(name)) { error("`%s' is not a defined file system", name); return; } /* * Convert to lower case. This will be used in the select * table, to verify root file systems, and when the initial * VFS list is created. */ n = strtolower(name); if (do_option(fsopttab, &nextfsopt, name, n, "file-system")) return; /* * Add a lower-case version to the table for root file system * verification. */ if (ht_insert(fsopttab, n, (void *)n)) panic("addfsoption: already in table"); /* Add to select table. */ (void)ht_insert(selecttab, n, (void *)n); } void delfsoption(const char *name) { const char *n; n = strtolower(name); if (undo_option(fsopttab, &fsoptions, &nextfsopt, name, "file-system")) return; if (undo_option(fsopttab, NULL, NULL, n, "file-system")) return; if (undo_option(selecttab, NULL, NULL, n, "file-system")) return; } /* * Add a "make" option. */ void addmkoption(const char *name, const char *value) { (void)do_option(mkopttab, &nextmkopt, name, value, "makeoptions"); } void delmkoption(const char *name) { (void)undo_option(mkopttab, &mkoptions, &nextmkopt, name, "makeoptions"); } /* * Add an appending "make" option. */ void appendmkoption(const char *name, const char *value) { struct nvlist *nv; nv = newnv(name, value, NULL, 0, NULL); *nextappmkopt = nv; nextappmkopt = &nv->nv_next; } /* * Add a conditional appending "make" option. */ void appendcondmkoption(const char *selname, const char *name, const char *value) { struct nvlist *nv, *lnv; const char *n; n = strtolower(selname); nv = newnv(name, value, NULL, 0, NULL); if (ht_insert(condmkopttab, n, nv) == 0) return; if ((lnv = ht_lookup(condmkopttab, n)) == NULL) panic("appendcondmkoption"); for (; lnv->nv_next != NULL; lnv = lnv->nv_next) /* search for the last list element */; lnv->nv_next = nv; } /* * Add a name=value pair to an option list. The value may be NULL. */ static int do_option(struct hashtab *ht, struct nvlist ***nppp, const char *name, const char *value, const char *type) { struct nvlist *nv; /* * If a defopt'ed or defflag'ed option was enabled but without * an explicit value (always the case for defflag), supply a * default value of 1, as for non-defopt options (where cc * treats -DBAR as -DBAR=1.) */ if ((OPT_DEFOPT(name) || OPT_DEFFLAG(name)) && value == NULL) value = "1"; /* assume it will work */ nv = newnv(name, value, NULL, 0, NULL); if (ht_insert(ht, name, nv) == 0) { **nppp = nv; *nppp = &nv->nv_next; return (0); } /* oops, already got that option */ nvfree(nv); if ((nv = ht_lookup(ht, name)) == NULL) panic("do_option"); if (nv->nv_str != NULL && !OPT_FSOPT(name)) error("already have %s `%s=%s'", type, name, nv->nv_str); else error("already have %s `%s'", type, name); return (1); } /* * Remove a name from a hash table, * and optionally, a name=value pair from an option list. */ static int undo_option(struct hashtab *ht, struct nvlist **npp, struct nvlist ***next, const char *name, const char *type) { struct nvlist *nv; if (ht_remove(ht, name)) { error("%s `%s' is not defined", type, name); return (1); } if (npp == NULL) return (0); for ( ; *npp != NULL; npp = &(*npp)->nv_next) { if ((*npp)->nv_name != name) continue; if (next != NULL && *next == &(*npp)->nv_next) *next = npp; nv = (*npp)->nv_next; nvfree(*npp); *npp = nv; return (0); } panic("%s `%s' is not defined in nvlist", type, name); return (1); } /* * Return true if there is at least one instance of the given unit * on the given device attachment (or any units, if unit == WILD). */ int deva_has_instances(struct deva *deva, int unit) { struct devi *i; for (i = deva->d_ihead; i != NULL; i = i->i_asame) if (i->i_active == DEVI_ACTIVE && (unit == WILD || unit == i->i_unit || i->i_unit == STAR)) return (1); return (0); } /* * Return true if there is at least one instance of the given unit * on the given base (or any units, if unit == WILD). */ int devbase_has_instances(struct devbase *dev, int unit) { struct deva *da; /* * Pseudo-devices are a little special. We consider them * to have instances only if they are both: * * 1. Included in this kernel configuration. * * 2. Have one or more interface attributes. */ if (dev->d_ispseudo) { struct nvlist *nv; struct attr *a; if (ht_lookup(devitab, dev->d_name) == NULL) return (0); for (nv = dev->d_attrs; nv != NULL; nv = nv->nv_next) { a = nv->nv_ptr; if (a->a_iattr) return (1); } return (0); } for (da = dev->d_ahead; da != NULL; da = da->d_bsame) if (deva_has_instances(da, unit)) return (1); return (0); } static int cfcrosscheck(struct config *cf, const char *what, struct nvlist *nv) { struct devbase *dev; struct devi *pd; int errs, devunit; if (maxpartitions <= 0) panic("cfcrosscheck"); for (errs = 0; nv != NULL; nv = nv->nv_next) { if (nv->nv_name == NULL) continue; dev = ht_lookup(devbasetab, nv->nv_name); if (dev == NULL) panic("cfcrosscheck(%s)", nv->nv_name); if (has_attr(dev->d_attrs, s_ifnet)) devunit = nv->nv_ifunit; /* XXX XXX XXX */ else devunit = minor(nv->nv_int) / maxpartitions; if (devbase_has_instances(dev, devunit)) continue; if (devbase_has_instances(dev, STAR) && devunit >= dev->d_umax) continue; TAILQ_FOREACH(pd, &allpseudo, i_next) { if (pd->i_base == dev && devunit < dev->d_umax && devunit >= 0) goto loop; } (void)fprintf(stderr, "%s:%d: %s says %s on %s, but there's no %s\n", conffile, cf->cf_lineno, cf->cf_name, what, nv->nv_str, nv->nv_str); errs++; loop: ; } return (errs); } /* * Cross-check the configuration: make sure that each target device * or attribute (`at foo[0*?]') names at least one real device. Also * see that the root and dump devices for all configurations are there. */ int crosscheck(void) { struct config *cf; int errs; errs = 0; if (TAILQ_EMPTY(&allcf)) { (void)fprintf(stderr, "%s has no configurations!\n", conffile); errs++; } TAILQ_FOREACH(cf, &allcf, cf_next) { if (cf->cf_root != NULL) { /* i.e., not root on ? */ errs += cfcrosscheck(cf, "root", cf->cf_root); errs += cfcrosscheck(cf, "dumps", cf->cf_dump); } } return (errs); } /* * Check to see if there is a *'d unit with a needs-count file. */ int badstar(void) { struct devbase *d; struct deva *da; struct devi *i; int errs, n; errs = 0; TAILQ_FOREACH(d, &allbases, d_next) { for (da = d->d_ahead; da != NULL; da = da->d_bsame) for (i = da->d_ihead; i != NULL; i = i->i_asame) { if (i->i_unit == STAR) goto aybabtu; } continue; aybabtu: if (ht_lookup(needcnttab, d->d_name)) { (void)fprintf(stderr, "config: %s's cannot be *'d until its driver is fixed\n", d->d_name); errs++; continue; } for (n = 0; i != NULL; i = i->i_alias) if (!i->i_collapsed) n++; if (n < 1) panic("badstar() n<1"); } return (errs); } /* * Verify/create builddir if necessary, change to it, and verify srcdir. * This will be called when we see the first include. */ void setupdirs(void) { struct stat st; /* srcdir must be specified if builddir is not specified or if * no configuration filename was specified. */ if ((builddir || strcmp(defbuilddir, ".") == 0) && !srcdir) { error("source directory must be specified"); exit(1); } if (srcdir == NULL) srcdir = "../../../.."; if (builddir == NULL) builddir = defbuilddir; if (stat(builddir, &st) != 0) { if (mkdir(builddir, 0777)) { (void)fprintf(stderr, "config: cannot create %s: %s\n", builddir, strerror(errno)); exit(2); } } else if (!S_ISDIR(st.st_mode)) { (void)fprintf(stderr, "config: %s is not a directory\n", builddir); exit(2); } if (chdir(builddir) != 0) { (void)fprintf(stderr, "config: cannot change to %s\n", builddir); exit(2); } if (stat(srcdir, &st) != 0 || !S_ISDIR(st.st_mode)) { (void)fprintf(stderr, "config: %s is not a directory\n", srcdir); exit(2); } } /* * Write identifier from "ident" directive into file, for * newvers.sh to pick it up. */ int mkident(void) { FILE *fp; int error = 0; (void)unlink("ident"); if (ident == NULL) return (0); if ((fp = fopen("ident", "w")) == NULL) { (void)fprintf(stderr, "config: cannot write ident: %s\n", strerror(errno)); return (1); } if (vflag) (void)printf("using ident '%s'\n", ident); if (fprintf(fp, "%s\n", ident) < 0) error = 1; (void)fclose(fp); return error; } void logconfig_start(void) { extern FILE *yyin; char line[1024]; const char *tmpdir; struct stat st; int fd; if (yyin == NULL || fstat(fileno(yyin), &st) == -1) return; cfgtime = st.st_mtime; tmpdir = getenv("TMPDIR"); if (tmpdir == NULL) tmpdir = "/tmp"; snprintf(line, sizeof(line), "%s/config.tmp.XXXXXX", tmpdir); if ((fd = mkstemp(line)) == -1 || (cfg = fdopen(fd, "r+")) == NULL) { if (fd != -1) { unlink(line); close(fd); } cfg = NULL; return; } unlink(line); (void)fprintf(cfg, "#include \"opt_config.h\"\n"); (void)fprintf(cfg, "\n"); (void)fprintf(cfg, "/*\n"); (void)fprintf(cfg, " * Add either (or both) of\n"); (void)fprintf(cfg, " *\n"); (void)fprintf(cfg, " *\toptions %s\n", LOGCONFIG_LARGE); (void)fprintf(cfg, " *\toptions %s\n", LOGCONFIG_SMALL); (void)fprintf(cfg, " *\n"); (void)fprintf(cfg, " * to your kernel config file to embed it in the resulting\n"); (void)fprintf(cfg, " * kernel. The latter option does not include files that are\n"); (void)fprintf(cfg, " * included (recursively) by your config file. The embedded\n"); (void)fprintf(cfg, " * data be extracted by using the command:\n"); (void)fprintf(cfg, " *\n"); (void)fprintf(cfg, " *\tstrings netbsd | sed -n 's/^_CFG_//p' | unvis\n"); (void)fprintf(cfg, " */\n"); (void)fprintf(cfg, "\n"); (void)fprintf(cfg, "#ifdef CONFIG_FILE\n"); (void)fprintf(cfg, "#if defined(%s) || defined(%s)\n\n", LOGCONFIG_LARGE, LOGCONFIG_SMALL); (void)fprintf(cfg, "static const char config[]\n#ifdef __vax__\n" "\t__attribute__((__unused__))\n#else\n" "\t__attribute__((__used__))\n#endif\n\t=\n\n"); (void)fprintf(cfg, "#ifdef %s\n\n", LOGCONFIG_LARGE); (void)fprintf(cfg, "\"_CFG_### START CONFIG FILE \\\"%s\\\"\\n\"\n\n", conffile); (void)fprintf(cfg, "#endif /* %s */\n\n", LOGCONFIG_LARGE); logconfig_include(yyin, NULL); (void)fprintf(cfg, "#ifdef %s\n\n", LOGCONFIG_LARGE); (void)fprintf(cfg, "\"_CFG_### END CONFIG FILE \\\"%s\\\"\\n\"\n", conffile); rewind(yyin); } void logconfig_include(FILE *cf, const char *filename) { char line[1024], in[2048], *out; struct stat st; int missingeol; if (!cfg) return; missingeol = 0; if (fstat(fileno(cf), &st) == -1) return; if (cfgtime < st.st_mtime) cfgtime = st.st_mtime; if (filename) (void)fprintf(cfg, "\"_CFG_### (included from \\\"%s\\\")\\n\"\n", filename); while (fgets(line, sizeof(line), cf) != NULL) { missingeol = 1; (void)fprintf(cfg, "\"_CFG_"); if (filename) (void)fprintf(cfg, "###> "); strvis(in, line, VIS_TAB); for (out = in; *out; out++) switch (*out) { case '\n': (void)fprintf(cfg, "\\n\"\n"); missingeol = 0; break; case '"': case '\\': (void)fputc('\\', cfg); /* FALLTHROUGH */ default: (void)fputc(*out, cfg); break; } } if (missingeol) { (void)fprintf(cfg, "\\n\"\n"); (void)fprintf(stderr, "config: %s: newline missing at EOF\n", filename != NULL ? filename : conffile); } if (filename) (void)fprintf(cfg, "\"_CFG_### (end include \\\"%s\\\")\\n\"\n", filename); rewind(cf); } void logconfig_end(void) { char line[1024]; FILE *fp; struct stat st; if (!cfg) return; (void)fprintf(cfg, "#endif /* %s */\n", LOGCONFIG_LARGE); (void)fprintf(cfg, ";\n"); (void)fprintf(cfg, "#endif /* %s || %s */\n", LOGCONFIG_LARGE, LOGCONFIG_SMALL); (void)fprintf(cfg, "#endif /* CONFIG_FILE */\n"); rewind(cfg); if (stat("config_file.h", &st) != -1) { if (cfgtime < st.st_mtime) { fclose(cfg); return; } } fp = fopen("config_file.h", "w"); if(!fp) { (void)fprintf(stderr, "config: cannot write to \"config_file.h\"\n"); exit(1); } while (fgets(line, sizeof(line), cfg) != NULL) fputs(line, fp); fclose(fp); fclose(cfg); } static const char * strtolower(const char *name) { const char *n; char *p, low[500]; unsigned char c; for (n = name, p = low; (c = *n) != '\0'; n++) *p++ = isupper(c) ? tolower(c) : c; *p = 0; return (intern(low)); } static int is_elf(const char *file) { int kernel; char hdr[4]; kernel = open(file, O_RDONLY); if (kernel == -1) { fprintf(stderr, "config: cannot open %s: %s\n", file, strerror(errno)); exit(2); } if (read(kernel, hdr, 4) == -1) { fprintf(stderr, "config: cannot read from %s: %s\n", file, strerror(errno)); exit(2); } close(kernel); return memcmp("\177ELF", hdr, 4) == 0 ? 1 : 0; } static int extract_config(const char *kname, const char *cname, int cfd) { char *ptr; int found, kfd, i; struct stat st; found = 0; /* mmap(2) binary kernel */ kfd = open(conffile, O_RDONLY); if (kfd == -1) { fprintf(stderr, "config: cannot open %s: %s\n", kname, strerror(errno)); exit(2); } if ((fstat(kfd, &st) == -1)) { fprintf(stderr, "config: cannot stat %s: %s\n", kname, strerror(errno)); exit(2); } ptr = (char *)mmap(0, st.st_size, PROT_READ, MAP_FILE | MAP_SHARED, kfd, 0); if (ptr == MAP_FAILED) { fprintf(stderr, "config: cannot mmap %s: %s\n", kname, strerror(errno)); exit(2); } /* Scan mmap(2)'ed region, extracting kernel configuration */ for (i = 0; i < st.st_size; i++) { if ((*ptr == '_') && (st.st_size - i > 5) && memcmp(ptr, "_CFG_", 5) == 0) { /* Line found */ char *oldptr, line[LINE_MAX + 1], uline[LINE_MAX + 1]; int j; found = 1; oldptr = (ptr += 5); while (*ptr != '\n' && *ptr != '\0') ptr++; if (ptr - oldptr > LINE_MAX) { fprintf(stderr, "config: line too long\n"); exit(2); } i += ptr - oldptr + 5; memcpy(line, oldptr, (ptr - oldptr)); line[ptr - oldptr] = '\0'; j = strunvis(uline, line); if (j == -1) { fprintf(stderr, "config: unvis: invalid " "encoded sequence\n"); exit(2); } uline[j] = '\n'; if (write(cfd, uline, j + 1) == -1) { fprintf(stderr, "config: cannot write to %s: " "%s\n", cname, strerror(errno)); exit(2); } } else ptr++; } close(kfd); return found; } struct dhdi_params { struct devbase *d; int unit; int level; }; static int devbase_has_dead_instances(const char *key, void *value, void *aux) { struct devi *i; struct dhdi_params *dhdi = aux; for (i = value; i != NULL; i = i->i_alias) if (i->i_base == dhdi->d && (dhdi->unit == WILD || dhdi->unit == i->i_unit || i->i_unit == STAR) && i->i_level >= dhdi->level) return 1; return 0; } /* * This is almost the same as devbase_has_instances, except it * may have special considerations regarding ignored instances. */ static int devbase_has_any_instance(struct devbase *dev, int unit, int state, int level) { struct deva *da; struct devi *i; if (dev->d_ispseudo) { if (dev->d_ihead != NULL) return 1; else if (state != DEVI_IGNORED) return 0; if ((i = ht_lookup(deaddevitab, dev->d_name)) == NULL) return 0; return (i->i_level >= level); } for (da = dev->d_ahead; da != NULL; da = da->d_bsame) for (i = da->d_ihead; i != NULL; i = i->i_asame) if ((i->i_active == DEVI_ACTIVE || i->i_active == state) && (unit == WILD || unit == i->i_unit || i->i_unit == STAR)) return 1; if (state == DEVI_IGNORED) { struct dhdi_params dhdi = { dev, unit, level }; /* also check dead devices */ return ht_enumerate(deaddevitab, devbase_has_dead_instances, &dhdi); } return 0; } /* * check_dead_devi(), used with ht_enumerate, checks if any of the removed * device instances would have been a valid instance considering the devbase, * the parent device and the interface attribute. * * In other words, for a non-active device, it checks if children would be * actual orphans or the result of a negative statement in the config file. */ struct cdd_params { struct devbase *d; struct attr *at; struct devbase *parent; }; static int check_dead_devi(const char *key, void *value, void *aux) { struct cdd_params *cdd = aux; struct devi *i = value; struct pspec *p; if (i->i_base != cdd->d) return 0; for (; i != NULL; i = i->i_alias) { p = i->i_pspec; if ((p == NULL && cdd->at == NULL) || (p != NULL && p->p_iattr == cdd->at && (p->p_atdev == NULL || p->p_atdev == cdd->parent))) { if (p != NULL && !devbase_has_any_instance(cdd->parent, p->p_atunit, DEVI_IGNORED, i->i_level)) return 0; else return 1; } } return 0; } static void do_kill_orphans(struct devbase *d, struct attr *at, struct devbase *parent, int state) { struct nvlist *nv, *nv1; struct attr *a; struct devi *i, *j = NULL; struct pspec *p; int active = 0; /* * A pseudo-device will always attach at root, and if it has an * instance (it cannot have more than one), it is enough to consider * it active, as there is no real attachment. * * A pseudo device can never be marked DEVI_IGNORED. */ if (d->d_ispseudo) { if (d->d_ihead != NULL) d->d_ihead->i_active = active = DEVI_ACTIVE; else { if (ht_lookup(deaddevitab, d->d_name) != NULL) active = DEVI_IGNORED; else return; } } else { int seen = 0; for (i = d->d_ihead; i != NULL; i = i->i_bsame) { for (j = i; j != NULL; j = j->i_alias) { p = j->i_pspec; if ((p == NULL && at == NULL) || (p != NULL && p->p_iattr == at && (p->p_atdev == NULL || p->p_atdev == parent))) { if (p != NULL && !devbase_has_any_instance(parent, p->p_atunit, state, j->i_level)) continue; /* * There are Fry-like devices which can * be their own grand-parent (or even * parent, like uhub). We don't want * to loop, so if we've already reached * an instance for one reason or * another, stop there. */ if (j->i_active == DEVI_ACTIVE || j->i_active == state) { /* * Device has already been * seen. However it might * have siblings who still * have to be activated or * orphaned. */ seen = 1; continue; } j->i_active = active = state; if (p != NULL) p->p_active = state; } } } /* * If we've been there but have made no change, stop. */ if (seen && !active) return; if (!active) { struct cdd_params cdd = { d, at, parent }; /* Look for a matching dead devi */ if (ht_enumerate(deaddevitab, check_dead_devi, &cdd) && d != parent) /* * That device had its instances removed. * Continue the loop marking descendants * with DEVI_IGNORED instead of DEVI_ACTIVE. * * There is one special case for devices that * are their own parent: if that instance is * removed (e.g., no uhub* at uhub?), we don't * have to continue looping. */ active = DEVI_IGNORED; else return; } } for (nv = d->d_attrs; nv != NULL; nv = nv->nv_next) { a = nv->nv_ptr; for (nv1 = a->a_devs; nv1 != NULL; nv1 = nv1->nv_next) do_kill_orphans(nv1->nv_ptr, a, d, active); } } static int kill_orphans_cb(const char *key, void *value, void *aux) { do_kill_orphans((struct devbase *)value, NULL, NULL, DEVI_ACTIVE); return 0; } static void kill_orphans() { ht_enumerate(devroottab, kill_orphans_cb, NULL); }