4.4BSD/usr/src/usr.sbin/config.new/main.c
/*
* 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.
*
* @(#)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 <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "config.h"
int firstfile __P((const char *));
int yyparse __P((void));
extern char *optarg;
extern int optind;
static struct hashtab *opttab;
static struct hashtab *mkopttab;
static struct nvlist **nextopt;
static struct nvlist **nextmkopt;
static __dead void stop __P((void));
static int do_option __P((struct hashtab *, struct nvlist ***,
const char *, const char *, const char *));
static int crosscheck __P((void));
static int badstar __P((void));
static int mksymlinks __P((void));
static int has_instances __P((struct devbase *, int));
static int hasparent __P((struct devi *));
static int cfcrosscheck __P((struct config *, const char *, struct nvlist *));
int
main(argc, argv)
int argc;
char **argv;
{
register char *p;
int pflag, ch;
struct stat st;
pflag = 0;
while ((ch = getopt(argc, argv, "gp")) != EOF) {
switch (ch) {
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);
goto 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 '?':
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc != 1) {
usage:
(void)fputs("usage: config [-p] sysname\n", stderr);
exit(1);
}
conffile = argv[0];
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();
selecttab = ht_new();
needcnttab = ht_new();
opttab = ht_new();
mkopttab = ht_new();
nextopt = &options;
nextmkopt = &mkoptions;
/*
* Handle profiling (must do this before we try to create any
* files).
*/
if (pflag) {
char *s;
s = emalloc(strlen(conffile) + sizeof(".PROF"));
(void)sprintf(s, "%s.PROF", conffile);
confdirbase = s;
(void)addmkoption(intern("PROF"), "-pg");
(void)addoption(intern("GPROF"), NULL);
} else
confdirbase = conffile;
/*
* Verify, creating if necessary, the compilation directory.
*/
p = path(NULL);
if (stat(p, &st)) {
if (mkdir(p, 0777)) {
(void)fprintf(stderr, "config: cannot create %s: %s\n",
p, strerror(errno));
exit(2);
}
} else if (!S_ISDIR(st.st_mode)) {
(void)fprintf(stderr, "config: %s is not a directory\n", p);
exit(2);
}
/*
* Parse config file (including machine definitions).
*/
if (yyparse())
stop();
/*
* Fix (as in `set firmly in place') files.
*/
if (fixfiles())
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");
exit(0);
}
/*
* Make a symlink for "machine" so that "#include <machine/foo.h>" works.
*/
static int
mksymlinks()
{
int ret;
char *p, buf[200];
p = path("machine");
(void)sprintf(buf, "../../%s/include", machine);
(void)unlink(p);
ret = symlink(buf, p);
if (ret)
(void)fprintf(stderr, "config: symlink(%s -> %s): %s\n",
p, buf, strerror(errno));
free(p);
return (ret);
}
static __dead void
stop()
{
(void)fprintf(stderr, "*** Stop.\n");
exit(1);
}
/*
* Add an option from "options FOO". Note that this selects things that
* are "optional foo".
*/
void
addoption(name, value)
const char *name, *value;
{
register const char *n;
register 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;
{
register struct nvlist *nv;
/* assume it will work */
nv = newnv(name, value, NULL, 0);
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 base (or any units, if unit == WILD).
*/
static int
has_instances(dev, unit)
register struct devbase *dev;
int unit;
{
register struct devi *i;
if (unit == WILD)
return (dev->d_ihead != NULL);
for (i = dev->d_ihead; i != NULL; i = i->i_bsame)
if (unit == i->i_unit)
return (1);
return (0);
}
static int
hasparent(i)
register struct devi *i;
{
register struct nvlist *nv;
int atunit = i->i_atunit;
if (i->i_atdev != NULL && has_instances(i->i_atdev, atunit))
return (1);
if (i->i_atattr != NULL)
for (nv = i->i_atattr->a_refs; nv != NULL; nv = nv->nv_next)
if (has_instances(nv->nv_ptr, atunit))
return (1);
return (0);
}
static int
cfcrosscheck(cf, what, nv)
register struct config *cf;
const char *what;
register struct nvlist *nv;
{
register struct devbase *dev;
int errs;
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_instances(dev, STAR) ||
has_instances(dev, minor(nv->nv_int) >> 3))
continue;
(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++;
}
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()
{
register struct devi *i;
register 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);
if (i->i_atunit == WILD)
(void)fprintf(stderr, " (no %s's declared)\n",
i->i_base->d_name);
else
(void)fprintf(stderr, " (no %s declared)\n", 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 more than one *'d unit for any device,
* or a *'d unit with a needs-count file.
*/
int
badstar()
{
register struct devbase *d;
register struct devi *i;
register int errs, n;
errs = 0;
for (d = allbases; d != NULL; d = d->d_next) {
for (i = d->d_ihead; i != NULL; i = i->i_bsame)
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");
if (n == 1)
continue;
(void)fprintf(stderr,
"config: %d %s*'s in configuration; can only have 1\n",
n, d->d_name);
errs++;
}
return (errs);
}