/* $OpenBSD: main.c,v 1.30 2003/03/28 16:52:21 millert Exp $ */ /* $NetBSD: main.c,v 1.22 1997/02/02 21:12:33 thorpej 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. 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, Berkeley and its contributors. * 4. 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 */ #ifndef lint static char 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 "config.h" int firstfile(const char *); int yyparse(void); extern char *optarg; extern int optind; static struct hashtab *mkopttab; static struct nvlist **nextopt; static struct nvlist **nextdefopt; static struct nvlist **nextmkopt; static __dead void stop(void); static int do_option(struct hashtab *, struct nvlist ***, const char *, const char *, const char *); static int crosscheck(void); static int badstar(void); static int mksymlinks(void); static int hasparent(struct devi *); static int cfcrosscheck(struct config *, const char *, struct nvlist *); static void optiondelta(void); int madedir = 0; void usage() { extern char *__progname; fprintf(stderr, "usage: %s [-p] [-s srcdir] [-b builddir] [sysname]\n", __progname); fprintf(stderr, " %s -e [-u] [-f | -o newkernel] kernel\n", __progname); exit(1); } int main(argc, argv) int argc; char **argv; { char *p; const char *last_component; char *outfile = NULL; int pflag, ch, eflag, uflag, fflag; pflag = eflag = uflag = fflag = 0; while ((ch = getopt(argc, argv, "egpfb:s:o:u")) != -1) { switch (ch) { case 'o': outfile = optarg; break; case 'u': uflag = 1; break; case 'f': fflag = 1; break; case 'e': eflag = 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)fputs( "-g is obsolete (use makeoptions DEBUG=\"-g\")\n", stderr); 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 'b': builddir = optarg; break; case 's': srcdir = optarg; break; case '?': default: usage(); } } argc -= optind; argv += optind; if (argc > 1 || (eflag && argv[0] == NULL)) usage(); if (eflag) { #ifdef MAKE_BOOTSTRAP fprintf(stderr, "config: UKC not available in this binary\n"); exit(1); #else return (ukc(argv[0], outfile, uflag, fflag)); #endif } 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(); devbasetab = ht_new(); devatab = ht_new(); selecttab = ht_new(); needcnttab = ht_new(); opttab = ht_new(); mkopttab = ht_new(); defopttab = ht_new(); nextopt = &options; nextmkopt = &mkoptions; nextdefopt = &defoptions; /* * 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) { int len = strlen(last_component) + 17; p = emalloc(len); (void)snprintf(p, len, "../compile/%s.PROF", last_component); (void)addmkoption(intern("PROF"), "-pg"); (void)addoption(intern("GPROF"), NULL); } else { int len = strlen(last_component) + 12; p = emalloc(len); (void)snprintf(p, len, "../compile/%s", last_component); } defbuilddir = (argc == 0) ? "." : p; /* * Parse config file (including machine definitions). */ if (yyparse()) stop(); /* * Fix (as in `set firmly in place') files. */ if (fixfiles()) stop(); /* * Fix objects and libraries. */ if (fixobjects()) 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 (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()) stop(); (void)printf("Don't forget to run \"make depend\"\n"); optiondelta(); exit(0); } /* * Make a symlink for "machine" so that "#include " works, * and for the machine's CPU architecture, so that works as well. */ static int mksymlinks() { int ret; char *p, buf[MAXPATHLEN]; const char *q; snprintf(buf, sizeof buf, "arch/%s/include", machine); p = sourcepath(buf); (void)unlink("machine"); ret = symlink(p, "machine"); if (ret) (void)fprintf(stderr, "config: symlink(machine -> %s): %s\n", p, strerror(errno)); if (machinearch != NULL) { snprintf(buf, sizeof buf, "arch/%s/include", machinearch); p = sourcepath(buf); q = machinearch; } else { p = strdup("machine"); q = machine; } (void)unlink(q); 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)fprintf(stderr, "*** Stop.\n"); exit(1); } /* * Define a standard option, for which a header file will be generated. */ void defoption(name) const char *name; { const char *n; char *p, c; char low[500]; /* * Convert to lower case. The header file name will be * in lower case, so we store the lower case version in * the hash table to detect option name collisions. The * original string will be stored in the nvlist for use * in the header file. */ for (n = name, p = low; (c = *n) != '\0'; n++) *p++ = isupper(c) ? tolower(c) : c; *p = 0; n = intern(low); (void)do_option(defopttab, &nextdefopt, n, name, "defopt"); /* * Insert a verbatim copy of the option name, as well, * to speed lookups when creating the Makefile. */ (void)ht_insert(defopttab, name, (void *)name); } /* * Remove an option. */ void removeoption(name) const char *name; { struct nvlist *nv, *nvt; const char *n; char *p, c; char low[500]; if ((nv = ht_lookup(opttab, name)) != NULL) { if (options == nv) { options = nv->nv_next; nvfree(nv); } else { nvt = options; while (nvt->nv_next != NULL) { if (nvt->nv_next == nv) { nvt->nv_next = nvt->nv_next->nv_next; nvfree(nv); break; } else nvt = nvt->nv_next; } } } (void)ht_remove(opttab, name); /* make lowercase, then add to select table */ for (n = name, p = low; (c = *n) != '\0'; n++) *p++ = isupper(c) ? tolower(c) : c; *p = 0; n = intern(low); (void)ht_remove(selecttab, n); } /* * Add an option from "options FOO". Note that this selects things that * are "optional foo". */ void addoption(name, value) const char *name, *value; { const char *n; char *p, c; char low[500]; if (do_option(opttab, &nextopt, name, value, "options")) return; /* make lowercase, then add to select table */ for (n = name, p = low; (c = *n) != '\0'; n++) *p++ = isupper(c) ? tolower(c) : c; *p = 0; n = intern(low); (void)ht_insert(selecttab, n, (void *)n); } /* * Add a "make" option. */ void addmkoption(name, value) const char *name, *value; { (void)do_option(mkopttab, &nextmkopt, name, value, "mkoptions"); } /* * Add a name=value pair to an option list. The value may be NULL. */ static int do_option(ht, nppp, name, value, type) struct hashtab *ht; struct nvlist ***nppp; const char *name, *value, *type; { struct nvlist *nv; /* 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) error("already have %s `%s=%s'", type, name, nv->nv_str); else error("already have %s `%s'", 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(deva, unit) struct deva *deva; int unit; { struct devi *i; if (unit == WILD) return (deva->d_ihead != NULL); for (i = deva->d_ihead; i != NULL; i = i->i_asame) if (unit == i->i_unit) 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(dev, unit) struct devbase *dev; int unit; { struct deva *da; for (da = dev->d_ahead; da != NULL; da = da->d_bsame) if (deva_has_instances(da, unit)) return (1); return (0); } static int hasparent(i) struct devi *i; { struct nvlist *nv; int atunit = i->i_atunit; /* * We determine whether or not a device has a parent in in one * of two ways: * (1) If a parent device was named in the config file, * i.e. cases (2) and (3) in sem.c:adddev(), then * we search its devbase for a matching unit number. * (2) If the device was attach to an attribute, then we * search all attributes the device can be attached to * for parents (with appropriate unit numbers) that * may be able to attach the device. */ /* * Case (1): A parent was named. Either it's configured, or not. */ if (i->i_atdev != NULL) return (devbase_has_instances(i->i_atdev, atunit)); /* * Case (2): No parent was named. Look for devs that provide the attr. */ if (i->i_atattr != NULL) for (nv = i->i_atattr->a_refs; nv != NULL; nv = nv->nv_next) if (devbase_has_instances(nv->nv_ptr, atunit)) return (1); return (0); } static int cfcrosscheck(cf, what, nv) struct config *cf; const char *what; struct nvlist *nv; { struct devbase *dev; struct devi *pd; int errs, devminor; 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); devminor = minor(nv->nv_int) / maxpartitions; if (devbase_has_instances(dev, devminor)) continue; if (devbase_has_instances(dev, STAR) && devminor >= dev->d_umax) continue; for (pd = allpseudo; pd != NULL; pd = pd->i_next) if (pd->i_base == dev && devminor < dev->d_umax && devminor >= 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, swap, and dump devices for all configurations * are there. */ int crosscheck() { struct devi *i; struct config *cf; int errs; errs = 0; for (i = alldevi; i != NULL; i = i->i_next) { if (i->i_at == NULL || hasparent(i)) continue; xerror(conffile, i->i_lineno, "%s at %s is orphaned", i->i_name, i->i_at); (void)fprintf(stderr, " (%s %s declared)\n", i->i_atunit == WILD ? "nothing matching" : "no", i->i_at); errs++; } if (allcf == NULL) { (void)fprintf(stderr, "%s has no configurations!\n", conffile); errs++; } for (cf = allcf; cf != NULL; cf = cf->cf_next) { if (cf->cf_root != NULL) { /* i.e., not swap generic */ errs += cfcrosscheck(cf, "root", cf->cf_root); errs += cfcrosscheck(cf, "swap", cf->cf_swap); 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() { struct devbase *d; struct deva *da; struct devi *i; int errs, n; errs = 0; for (d = allbases; d != NULL; d = d->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 foundstar; } continue; foundstar: 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() { 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); } madedir = 1; } 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); } } struct opt { const char *name; const char *val; }; int optcmp(sp1, sp2) struct opt *sp1, *sp2; { int r; r = strcmp(sp1->name, sp2->name); if (r == 0) { if (!sp1->val && !sp2->val) r = 0; else if (sp1->val && !sp2->val) r = -1; else if (sp2->val && !sp1->val) r = 1; else r = strcmp(sp1->val, sp2->val); } return (r); } void optiondelta() { struct nvlist *nv; char nbuf[BUFSIZ], obuf[BUFSIZ]; /* XXX size */ int nnewopts, ret = 0, i; struct opt *newopts; FILE *fp; for (nnewopts = 0, nv = options; nv != NULL; nv = nv->nv_next) nnewopts++; newopts = (struct opt *)malloc(nnewopts * sizeof(struct opt)); if (newopts == NULL) ret = 0; for (i = 0, nv = options; nv != NULL; nv = nv->nv_next, i++) { newopts[i].name = nv->nv_name; newopts[i].val = nv->nv_str; } qsort(newopts, nnewopts, sizeof (struct opt), optcmp); /* compare options against previous config */ if ((fp = fopen("options", "r"))) { for (i = 0; !feof(fp) && i < nnewopts && ret == 0; i++) { if (newopts[i].val) snprintf(nbuf, sizeof nbuf, "%s=%s\n", newopts[i].name, newopts[i].val); else snprintf(nbuf, sizeof nbuf, "%s\n", newopts[i].name); if (fgets(obuf, sizeof obuf, fp) == NULL || strcmp(nbuf, obuf)) ret = 1; } fclose(fp); fp = NULL; } else ret = 1; /* replace with the new list of options */ if ((fp = fopen("options", "w+"))) { rewind(fp); for (i = 0; i < nnewopts; i++) { if (newopts[i].val) fprintf(fp, "%s=%s\n", newopts[i].name, newopts[i].val); else fprintf(fp, "%s\n", newopts[i].name); } fclose(fp); } free(newopts); if (ret == 0 || madedir == 1) return; (void)printf("Kernel options have changed -- you must run \"make clean\"\n"); }