/* $NetBSD: main.c,v 1.102 2025/01/07 14:21:11 joe 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
#include <sys/cdefs.h>
__RCSID("$NetBSD: main.c,v 1.102 2025/01/07 14:21:11 joe Exp $");
#ifndef MAKE_BOOTSTRAP
#include <sys/cdefs.h>
#define COPYRIGHT(x) __COPYRIGHT(x)
#else
#define COPYRIGHT(x) static const char copyright[] = x
#endif
#ifndef lint
COPYRIGHT("@(#) Copyright (c) 1992, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/mman.h>
#if !HAVE_NBTOOL_CONFIG_H
#include <sys/sysctl.h>
#endif
#include <paths.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include <util.h>
#include "defs.h"
#include "sem.h"
#ifndef LINE_MAX
#define LINE_MAX 1024
#endif
struct devbasetq allbases;
struct devatq alldevas;
struct conftq allcf;
struct devitq alldevi, allpseudo;
struct devmtq alldevms;
struct pspectq allpspecs;
struct devi **packed;
size_t npacked;
struct locators locators;
int lkmmode;
const char *conffile; /* source file, e.g., "GENERIC.sparc" */
const char *machine; /* machine type, e.g., "sparc" or "sun3" */
const char *machinearch; /* machine arch, e.g., "sparc" or "m68k" */
struct nvlist *machinesubarches;
/* machine subarches, e.g., "sun68k" or "hpc" */
const char *ioconfname; /* ioconf name, mutually exclusive to machine */
const char *srcdir; /* path to source directory (rel. to build) */
const char *builddir; /* path to build directory */
const char *defbuilddir; /* default build directory */
const char *ident; /* kernel "ident"ification string */
int errors; /* counts calls to error() */
int minmaxusers; /* minimum "maxusers" parameter */
int defmaxusers; /* default "maxusers" parameter */
int maxmaxusers; /* default "maxusers" parameter */
int maxusers; /* configuration's "maxusers" parameter */
int maxpartitions; /* configuration's "maxpartitions" parameter */
int version; /* version of the configuration file */
struct nvlist *options; /* options */
struct nvlist *fsoptions; /* filesystems */
struct nvlist *mkoptions; /* makeoptions */
struct nvlist *appmkoptions; /* appending mkoptions */
struct nvlist *condmkoptions; /* conditional makeoption table */
struct hashtab *devbasetab; /* devbase lookup */
struct hashtab *devroottab; /* attach at root lookup */
struct hashtab *devatab; /* devbase attachment lookup */
struct hashtab *deaddevitab; /* removed instances lookup */
struct hashtab *selecttab; /* selects things that are "optional foo" */
struct hashtab *needcnttab; /* retains names marked "needs-count" */
struct hashtab *opttab; /* table of configured options */
struct hashtab *fsopttab; /* table of configured file systems */
struct dlhash *defopttab; /* options that have been "defopt"'d */
struct dlhash *defflagtab; /* options that have been "defflag"'d */
struct dlhash *defparamtab; /* options that have been "defparam"'d */
struct dlhash *defoptlint; /* lint values for options */
struct nvhash *deffstab; /* defined file systems */
struct dlhash *optfiletab; /* "defopt"'d option .h files */
struct hashtab *attrtab; /* attributes (locators, etc.) */
struct hashtab *attrdeptab; /* attribute dependencies */
struct hashtab *bdevmtab; /* block devm lookup */
struct hashtab *cdevmtab; /* character devm lookup */
int ndevi; /* number of devi's (before packing) */
int npspecs; /* number of parent specs */
devmajor_t maxbdevm; /* max number of block major */
devmajor_t maxcdevm; /* max number of character major */
int do_devsw; /* 0 if pre-devsw config */
int oktopackage; /* 0 before setmachine() */
int devilevel; /* used for devi->i_level */
struct filelist allfiles; /* list of all kernel source files */
struct filelist allcfiles; /* list of all .c files */
struct filelist allsfiles; /* list of all .S files */
struct filelist allofiles; /* list of all .o files */
struct prefixlist prefixes, /* prefix stack */
allprefixes; /* all prefixes used (after popped) */
struct prefixlist buildprefixes, /* build prefix stack */
allbuildprefixes;/* all build prefixes used (after popped) */
int vflag; /* verbose output */
int Pflag; /* pack locators */
int Lflag; /* lint config generation */
int Mflag; /* modular build */
int Sflag; /* suffix rules & subdirectory */
int handling_cmdlineopts; /* currently processing -D/-U options */
int yyparse(void);
#if !defined(MAKE_BOOTSTRAP) && defined(YYDEBUG)
extern int yydebug;
#endif
int dflag;
static struct dlhash *obsopttab;
static struct hashtab *mkopttab;
static struct nvlist **nextopt;
static struct nvlist **nextmkopt;
static struct nvlist **nextappmkopt;
static struct nvlist **nextcndmkopt;
static struct nvlist **nextfsopt;
static struct nvlist *cmdlinedefs, *cmdlineundefs;
static void usage(void) __dead;
static void dependopts(void);
static void dependopts_one(const char *);
static void do_depends(struct nvlist *);
static void do_depend(struct nvlist *);
static void stop(void);
static int do_option(struct hashtab *, struct nvlist **,
struct nvlist ***, const char *, const char *,
const char *, struct hashtab *);
static int undo_option(struct hashtab *, struct nvlist **,
struct nvlist ***, const char *, const char *, int);
static int crosscheck(void);
static int badstar(void);
static int mkallsubdirs(void);
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 add_makeopt(const char *);
static void remove_makeopt(const char *);
static void handle_cmdline_makeoptions(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 void defopt(struct dlhash *ht, const char *fname,
struct defoptlist *opts, struct nvlist *deps, int obs);
static struct nvlist *find_declared_fs_option(const char *name);
#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;
extern const char *yyfile;
int
main(int argc, char **argv)
{
char *p, cname[PATH_MAX];
const char *last_component;
int pflag, xflag, ch, removeit;
setprogname(argv[0]);
pflag = 0;
xflag = 0;
while ((ch = getopt(argc, argv, "D:LMPSU:dgpvb:s:x")) != -1) {
switch (ch) {
case 'd':
#if !defined(MAKE_BOOTSTRAP) && defined(YYDEBUG)
yydebug = 1;
#endif
dflag++;
break;
case 'M':
Mflag = 1;
break;
case 'L':
Lflag = 1;
break;
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.
*/
warnx("-g is obsolete (use -D DEBUG=\"-g\")");
usage();
/*NOTREACHED*/
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 'S':
Sflag = 1;
break;
case 'x':
xflag = 1;
break;
case 'D':
add_makeopt(optarg);
break;
case 'U':
remove_makeopt(optarg);
break;
case '?':
default:
usage();
}
}
if (xflag && optind != 2) {
errx(EXIT_FAILURE, "-x must be used alone");
}
argc -= optind;
argv += optind;
if (argc > 1) {
usage();
}
if (Lflag && (builddir != NULL || Pflag || pflag))
errx(EXIT_FAILURE, "-L can only be used with -s and -v");
if (xflag) {
if (argc == 0) {
#if !HAVE_NBTOOL_CONFIG_H
char path_unix[MAXPATHLEN];
size_t len = sizeof(path_unix) - 1;
path_unix[0] = '/';
conffile = sysctlbyname("machdep.booted_kernel",
&path_unix[1], &len, NULL, 0) == -1 ? _PATH_UNIX :
path_unix;
#else
errx(EXIT_FAILURE, "no kernel supplied");
#endif
} else
conffile = argv[0];
if (!is_elf(conffile))
errx(EXIT_FAILURE, "%s: not a binary kernel",
conffile);
if (!extract_config(conffile, "stdout", STDOUT_FILENO))
errx(EXIT_FAILURE, "%s does not contain embedded "
"configuration data", conffile);
exit(0);
}
conffile = (argc == 1) ? argv[0] : "CONFIG";
if (firstfile(conffile)) {
err(EXIT_FAILURE, "Cannot read `%s'", conffile);
exit(2);
}
/*
* Init variables.
*/
minmaxusers = 1;
maxmaxusers = 10000;
initintern();
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();
fsopttab = ht_new();
deffstab = nvhash_create();
defopttab = dlhash_create();
defparamtab = dlhash_create();
defoptlint = dlhash_create();
defflagtab = dlhash_create();
optfiletab = dlhash_create();
obsopttab = dlhash_create();
bdevmtab = ht_new();
maxbdevm = 0;
cdevmtab = ht_new();
maxcdevm = 0;
nextopt = &options;
nextmkopt = &mkoptions;
nextappmkopt = &appmkoptions;
nextcndmkopt = &condmkoptions;
nextfsopt = &fsoptions;
initfiles();
initsem();
/*
* 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;
if (Lflag) {
char resolvedname[MAXPATHLEN];
if (realpath(conffile, resolvedname) == NULL)
err(EXIT_FAILURE, "realpath(%s)", conffile);
if (yyparse())
stop();
printf("include \"%s\"\n", resolvedname);
emit_params();
emit_options();
emit_instances();
exit(EXIT_SUCCESS);
}
removeit = 0;
if (is_elf(conffile)) {
const char *tmpdir;
int cfd;
if (builddir == NULL)
errx(EXIT_FAILURE, "Build directory must be specified "
"with binary kernels");
/* Open temporary configuration file */
tmpdir = getenv("TMPDIR");
if (tmpdir == NULL)
tmpdir = _PATH_TMP;
snprintf(cname, sizeof(cname), "%s/config.tmp.XXXXXX", tmpdir);
cfd = mkstemp(cname);
if (cfd == -1)
err(EXIT_FAILURE, "Cannot create `%s'", cname);
printf("Using configuration data embedded in kernel...\n");
if (!extract_config(conffile, cname, cfd)) {
unlink(cname);
errx(EXIT_FAILURE, "%s does not contain embedded "
"configuration data", conffile);
}
removeit = 1;
close(cfd);
firstfile(cname);
}
/*
* Log config file. We don't know until yyparse() if we're
* going to need config_file.h (i.e. if we're doing ioconf-only
* or not). Just start creating the file, and when we know
* later, we'll just keep or discard our work here.
*/
logconfig_start();
/*
* Parse config file (including machine definitions).
*/
if (yyparse())
stop();
if (ioconfname && cfg)
fclose(cfg);
else
logconfig_end();
if (removeit)
unlink(cname);
/*
* Handle command line overrides
*/
yyfile = "handle_cmdline_makeoptions";
handle_cmdline_makeoptions();
/*
* Detect and properly ignore orphaned devices
*/
yyfile = "kill_orphans";
kill_orphans();
/*
* Select devices and pseudo devices and their attributes
*/
yyfile = "fixdevis";
if (fixdevis())
stop();
/*
* Copy maxusers to param.
*/
yyfile = "fixmaxusers";
fixmaxusers();
/*
* Copy makeoptions to params
*/
yyfile = "fixmkoption";
fixmkoption();
/*
* If working on an ioconf-only config, process here and exit
*/
if (ioconfname) {
yyfile = "pack";
pack();
yyfile = "mkioconf";
mkioconf();
yyfile = "emitlocs";
emitlocs();
yyfile = "emitioconfh";
emitioconfh();
return 0;
}
yyfile = "dependattrs";
dependattrs();
/*
* Deal with option dependencies.
*/
yyfile = "dependopts";
dependopts();
/*
* Fix (as in `set firmly in place') files.
*/
yyfile = "fixfiles";
if (fixfiles())
stop();
/*
* Fix device-majors.
*/
yyfile = "fixdevsw";
if (fixdevsw())
stop();
/*
* Perform cross-checking.
*/
if (maxusers == 0) {
if (defmaxusers) {
(void)printf("maxusers not specified; %d assumed\n",
defmaxusers);
maxusers = defmaxusers;
} else {
warnx("need \"maxusers\" line");
errors++;
}
}
if (crosscheck() || errors)
stop();
/*
* Squeeze things down and finish cross-checks (STAR checks must
* run after packing).
*/
yyfile = "pack";
pack();
yyfile = "badstar";
if (badstar())
stop();
yyfile = NULL;
/*
* Ready to go. Build all the various files.
*/
if ((Sflag && mkallsubdirs()) || mksymlinks() || mkmakefile() || mkheaders() || mkswap() ||
mkioconf() || (do_devsw ? mkdevsw() : 0) || mkident() || errors)
stop();
(void)printf("Build directory is %s\n", builddir);
(void)printf("Don't forget to run \"make depend\"\n");
return 0;
}
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-Ppv] [-b builddir] [-D var=value] "
"[-s srcdir] [-U var] "
"[config-file]\n\t%s -x [kernel-file]\n"
"\t%s -L [-v] [-s srcdir] [config-file]\n",
getprogname(), getprogname(), getprogname());
exit(1);
}
/*
* Set any options that are implied by other options.
*/
static void
dependopts(void)
{
struct nvlist *nv;
for (nv = options; nv != NULL; nv = nv->nv_next) {
dependopts_one(nv->nv_name);
}
for (nv = fsoptions; nv != NULL; nv = nv->nv_next) {
dependopts_one(nv->nv_name);
}
}
static void
dependopts_one(const char *name)
{
struct defoptlist *dl;
struct nvlist *fs;
dl = find_declared_option_option(name);
if (dl != NULL) {
do_depends(dl->dl_depends);
}
fs = find_declared_fs_option(name);
if (fs != NULL) {
do_depends(fs->nv_ptr);
}
CFGDBG(3, "depend `%s' searched", name);
}
static void
do_depends(struct nvlist *nv)
{
struct nvlist *opt;
for (opt = nv; opt != NULL; opt = opt->nv_next) {
do_depend(opt);
}
}
static void
do_depend(struct nvlist *nv)
{
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.
*/
CFGDBG(3, "depend attr `%s'", nv->nv_name);
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);
dependopts_one(nv->nv_name);
}
}
}
static int
recreate(const char *p, const char *q)
{
int ret;
if ((ret = unlink(q)) == -1 && errno != ENOENT)
warn("unlink(%s)", q);
if ((ret = symlink(p, q)) == -1)
warn("symlink(%s -> %s)", q, p);
return ret;
}
static void
mksubdir(char *buf)
{
char *p;
struct stat st;
p = strrchr(buf, '/');
if (p != NULL && *p == '/') {
*p = '\0';
mksubdir(buf);
*p = '/';
}
if (stat(buf, &st) == 0) {
if (!S_ISDIR(st.st_mode))
errx(EXIT_FAILURE, "not directory %s", buf);
} else
if (mkdir(buf, 0777) == -1)
errx(EXIT_FAILURE, "cannot create %s", buf);
}
static int
mksubdirs(struct filelist *fl)
{
struct files *fi;
const char *prologue, *prefix, *sep;
char buf[MAXPATHLEN];
TAILQ_FOREACH(fi, fl, fi_next) {
if ((fi->fi_flags & FI_SEL) == 0)
continue;
prefix = sep = "";
if (fi->fi_buildprefix != NULL) {
prefix = fi->fi_buildprefix;
sep = "/";
} else {
if (fi->fi_prefix != NULL) {
prefix = fi->fi_prefix;
sep = "/";
}
}
snprintf(buf, sizeof(buf), "%s%s%s", prefix, sep, fi->fi_dir);
if (buf[0] == '\0')
continue;
mksubdir(buf);
if (fi->fi_prefix != NULL && fi->fi_buildprefix != NULL) {
char org[MAXPATHLEN];
if (fi->fi_prefix[0] == '/') {
prologue = "";
sep = "";
} else {
prologue = srcdir;
sep = "/";
}
snprintf(buf, sizeof(buf), "%s%s%s",
fi->fi_buildprefix, "/", fi->fi_path);
snprintf(org, sizeof(org), "%s%s%s%s%s",
prologue, sep, fi->fi_prefix, "/", fi->fi_path);
recreate(org, buf);
fi->fi_prefix = fi->fi_buildprefix;
fi->fi_buildprefix = NULL;
}
}
return 0;
}
static int
mkallsubdirs(void)
{
mksubdirs(&allfiles);
mksubdirs(&allofiles);
return 0;
}
/*
* Make a symlink for "machine" so that "#include <machine/foo.h>" 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;
p = buf;
snprintf(buf, sizeof(buf), "%s/arch/%s/include", srcdir, machine);
ret = recreate(p, "machine");
ret = recreate(p, machine);
if (machinearch != NULL) {
snprintf(buf, sizeof(buf), "%s/arch/%s/include", srcdir, machinearch);
q = machinearch;
} else {
snprintf(buf, sizeof(buf), "machine");
q = machine;
}
ret = recreate(p, q);
for (nv = machinesubarches; nv != NULL; nv = nv->nv_next) {
q = nv->nv_name;
snprintf(buf, sizeof(buf), "%s/arch/%s/include", srcdir, q);
ret = recreate(p, q);
}
return (ret);
}
static __dead void
stop(void)
{
(void)fprintf(stderr, "*** Stop.\n");
exit(1);
}
static void
check_dependencies(const char *thing, struct nvlist *deps)
{
struct nvlist *dep;
struct attr *a;
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)
cfgerror("option `%s' dependency `%s' "
"is an interface attribute",
thing, a->a_name);
} else if (OPT_OBSOLETE(dep->nv_name)) {
cfgerror("option `%s' dependency `%s' "
"is obsolete", thing, dep->nv_name);
} else if (!find_declared_option(dep->nv_name)) {
cfgerror("option `%s' dependency `%s' "
"is an unknown option",
thing, dep->nv_name);
}
}
}
static void
add_fs_dependencies(struct nvlist *nv, struct nvlist *deps)
{
/* Use nv_ptr to link any other options that are implied. */
nv->nv_ptr = deps;
check_dependencies(nv->nv_name, deps);
}
static void
add_opt_dependencies(struct defoptlist *dl, struct nvlist *deps)
{
dl->dl_depends = deps;
check_dependencies(dl->dl_name, deps);
}
/*
* Define one or more file systems.
*/
void
deffilesystem(struct nvlist *fses, struct nvlist *deps)
{
struct nvlist *nv;
struct where *w;
/*
* Mark these options as ones to skip when creating the Makefile.
*/
for (nv = fses; nv != NULL; nv = nv->nv_next) {
if ((w = DEFINED_OPTION(nv->nv_name)) != NULL) {
cfgerror("file system or option `%s' already defined"
" at %s:%hu", nv->nv_name, w->w_srcfile,
w->w_srcline);
return;
}
/*
* Also mark it as a valid file system, which may be
* used in "file-system" directives in the config
* file.
*/
if (nvhash_insert(deffstab, nv->nv_name, nv))
panic("file system `%s' already in table?!",
nv->nv_name);
add_fs_dependencies(nv, deps);
/*
* Implicit attribute definition for filesystem.
*/
const char *n;
n = strtolower(nv->nv_name);
refattr(n);
}
}
/*
* 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) {
cfgerror("option file name contains a `/'");
return 1;
}
if ((n = strrchr(fname, '.')) == NULL || strcmp(n, ".h") != 0) {
cfgerror("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.
*
* This used to be one function (find_declared_option) before options
* and filesystems became different types.
*/
struct defoptlist *
find_declared_option_option(const char *name)
{
struct defoptlist *option;
if ((option = dlhash_lookup(defopttab, name)) != NULL ||
(option = dlhash_lookup(defparamtab, name)) != NULL ||
(option = dlhash_lookup(defflagtab, name)) != NULL) {
return (option);
}
return (NULL);
}
static struct nvlist *
find_declared_fs_option(const char *name)
{
struct nvlist *fs;
if ((fs = nvhash_lookup(deffstab, name)) != NULL) {
return fs;
}
return (NULL);
}
/*
* Like find_declared_option but doesn't return what it finds, so it
* can search both the various kinds of options and also filesystems.
*/
struct where *
find_declared_option(const char *name)
{
struct defoptlist *option = NULL;
struct nvlist *fs;
if ((option = dlhash_lookup(defopttab, name)) != NULL ||
(option = dlhash_lookup(defparamtab, name)) != NULL ||
(option = dlhash_lookup(defflagtab, name)) != NULL) {
return &option->dl_where;
}
if ((fs = nvhash_lookup(deffstab, name)) != NULL) {
return &fs->nv_where;
}
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 dlhash *ht, const char *fname, struct defoptlist *opts,
struct nvlist *deps, int obs)
{
struct defoptlist *dl, *nextdl, *olddl;
const char *name;
struct where *w;
char buf[500];
if (fname != NULL && badfilename(fname)) {
return;
}
/*
* Mark these options as ones to skip when creating the Makefile.
*/
for (dl = opts; dl != NULL; dl = nextdl) {
nextdl = dl->dl_next;
if (dl->dl_lintvalue != NULL) {
/*
* If an entry already exists, then we are about to
* complain, so no worry.
*/
(void) dlhash_insert(defoptlint, dl->dl_name,
dl);
}
/* An option name can be declared at most once. */
if ((w = DEFINED_OPTION(dl->dl_name)) != NULL) {
cfgerror("file system or option `%s' already defined"
" at %s:%hu", dl->dl_name, w->w_srcfile,
w->w_srcline);
return;
}
if (dlhash_insert(ht, dl->dl_name, dl)) {
cfgerror("file system or option `%s' already defined"
" at %s:%hu", dl->dl_name, dl->dl_where.w_srcfile,
dl->dl_where.w_srcline);
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(dl->dl_name));
name = intern(buf);
} else {
name = fname;
}
add_opt_dependencies(dl, deps);
/*
* Remove this option from the parameter list before adding
* it to the list associated with this option file.
*/
dl->dl_next = NULL;
/*
* Flag as obsolete, if requested.
*/
if (obs) {
dl->dl_obsolete = 1;
(void)dlhash_insert(obsopttab, dl->dl_name, dl);
}
/*
* Add this option file if we haven't seen it yet.
* Otherwise, append to the list of options already
* associated with this file.
*/
if ((olddl = dlhash_lookup(optfiletab, name)) == NULL) {
(void)dlhash_insert(optfiletab, name, dl);
} else {
while (olddl->dl_next != NULL)
olddl = olddl->dl_next;
olddl->dl_next = dl;
}
}
}
/*
* Specify that a defined option should have a Makefile variable created.
*/
static void
mkoptvar(struct dlhash *ht, struct defoptlist *opts)
{
struct defoptlist *dl, *defined_dl;
for (dl = opts; dl != NULL; dl = dl->dl_next) {
defined_dl = dlhash_lookup(ht, dl->dl_name);
if (defined_dl == NULL) {
cfgerror("option `%s' not defined"
" at %s:%hu", dl->dl_name, dl->dl_where.w_srcfile,
dl->dl_where.w_srcline);
continue;
}
defined_dl->dl_mkvar = 1;
}
defoptlist_destroy(dl);
}
/*
* 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 defoptlist *opts, struct nvlist *deps)
{
cfgwarn("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 defoptlist *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 defoptlist *opts, struct nvlist *deps, int obs)
{
defopt(defflagtab, fname, opts, deps, obs);
}
/*
* Specify that a defined flag option should have a Makefile variable
* created.
*/
void
mkflagvar(struct defoptlist *opts)
{
mkoptvar(defflagtab, opts);
}
/*
* 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_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_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) {
cfgwarn("obsolete option `%s' will be ignored", name);
return;
}
/* Make sure this is not a defined file system. */
if (is_fs) {
cfgerror("`%s' is a defined file system", name);
return;
}
/* A defparam must have a value */
if (is_param && value == NULL) {
cfgerror("option `%s' must have a value", name);
return;
}
/* A defflag must not have a value */
if (is_flag && value != NULL) {
cfgerror("option `%s' must not have a value", name);
return;
}
if (is_undecl && vflag) {
cfgwarn("undeclared option `%s' added to IDENT", name);
}
if (do_option(opttab, &options, &nextopt, name, value, "options",
selecttab))
return;
/* make lowercase, then add to select table */
n = strtolower(name);
(void)ht_insert(selecttab, n, (void *)__UNCONST(n));
CFGDBG(3, "option selected `%s'", n);
}
void
deloption(const char *name, int nowarn)
{
CFGDBG(4, "deselecting opt `%s'", name);
if (undo_option(opttab, &options, &nextopt, name, "options", nowarn))
return;
if (undo_option(selecttab, NULL, NULL, strtolower(name), "options", nowarn))
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)) {
cfgerror("`%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.
*/
n = strtolower(name);
if (do_option(fsopttab, &fsoptions, &nextfsopt, name, n, "file-system",
selecttab))
return;
/* Add to select table. */
(void)ht_insert(selecttab, n, __UNCONST(n));
CFGDBG(3, "fs selected `%s'", name);
/*
* Select attribute if one exists.
*/
struct attr *a;
if ((a = ht_lookup(attrtab, n)) != NULL)
selectattr(a);
}
void
delfsoption(const char *name, int nowarn)
{
const char *n;
CFGDBG(4, "deselecting fs `%s'", name);
n = strtolower(name);
if (undo_option(fsopttab, &fsoptions, &nextfsopt, name, "file-system", nowarn))
return;
if (undo_option(selecttab, NULL, NULL, n, "file-system", nowarn))
return;
}
/*
* Add a "make" option.
*/
void
addmkoption(const char *name, const char *value)
{
(void)do_option(mkopttab, &mkoptions, &nextmkopt, name, value,
"makeoptions", NULL);
}
void
delmkoption(const char *name, int nowarn)
{
CFGDBG(4, "deselecting mkopt `%s'", name);
(void)undo_option(mkopttab, &mkoptions, &nextmkopt, name,
"makeoptions", nowarn);
}
/*
* 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(struct condexpr *cond, const char *name, const char *value)
{
struct nvlist *nv;
nv = newnv(name, value, cond, 0, NULL);
*nextcndmkopt = nv;
nextcndmkopt = &nv->nv_next;
}
/*
* Copy maxusers to param "MAXUSERS".
*/
void
fixmaxusers(void)
{
char str[32];
snprintf(str, sizeof(str), "%d", maxusers);
addoption(intern("MAXUSERS"), intern(str));
}
/*
* Copy makeoptions to params with "makeoptions_" prefix.
*/
void
fixmkoption(void)
{
struct nvlist *nv;
char buf[100];
const char *name;
for (nv = mkoptions; nv != NULL; nv = nv->nv_next) {
snprintf(buf, sizeof(buf), "makeoptions_%s", nv->nv_name);
name = intern(buf);
if (!DEFINED_OPTION(name) || !OPT_DEFPARAM(name))
continue;
addoption(name, intern(nv->nv_str));
}
}
/*
* Add a name=value pair to an option list. The value may be NULL.
*/
static int
do_option(struct hashtab *ht, struct nvlist **npp, struct nvlist ***next,
const char *name, const char *value, const char *type,
struct hashtab *stab)
{
struct nvlist *nv, *onv;
/* assume it will work */
nv = newnv(name, value, NULL, 0, NULL);
if (ht_insert(ht, name, nv) != 0) {
/* oops, already got that option - remove it first */
if ((onv = ht_lookup(ht, name)) == NULL)
panic("do_option 1");
if (onv->nv_str != NULL && !OPT_FSOPT(name))
cfgwarn("already have %s `%s=%s'", type, name,
onv->nv_str);
else
cfgwarn("already have %s `%s'", type, name);
if (undo_option(ht, npp, next, name, type, 0))
panic("do_option 2");
if (stab != NULL &&
undo_option(stab, NULL, NULL, strtolower(name), type, 0))
panic("do_option 3");
/* now try adding it again */
if (ht_insert(ht, name, nv) != 0)
panic("do_option 4");
CFGDBG(2, "opt `%s' replaced", name);
}
**next = nv;
*next = &nv->nv_next;
return (0);
}
/*
* 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, int nowarn)
{
struct nvlist *nv;
if (ht_remove(ht, name)) {
/*
* -U command line option removals are always silent
*/
if (!handling_cmdlineopts && !nowarn)
cfgwarn("%s `%s' is not defined", type, name);
return (1);
}
if (npp == NULL) {
CFGDBG(2, "opt `%s' deselected", name);
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;
CFGDBG(2, "opt `%s' deselected", (*npp)->nv_name);
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;
/*
* EHAMMERTOOBIG: we shouldn't check i_pseudoroot here.
* What we want by this check is them to appear non-present
* except for purposes of other devices being able to attach
* to them.
*/
for (i = deva->d_ihead; i != NULL; i = i->i_asame)
if (i->i_active == DEVI_ACTIVE && i->i_pseudoroot == 0 &&
(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. Be declared "defpseudodev".
*/
if (dev->d_ispseudo) {
return ((ht_lookup(devitab, dev->d_name) != NULL)
&& (dev->d_ispseudo > 1));
}
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 = (int)(minor(nv->nv_num) / 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:%hu: %s says %s on %s, but there's no %s\n",
conffile, cf->cf_where.w_srcline,
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)) {
warnx("%s has no configurations!", 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)) {
warnx("%s's cannot be *'d until its driver is fixed",
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) {
cfgerror("source directory must be specified");
exit(1);
}
if (Lflag) {
if (srcdir == NULL)
srcdir = "../../..";
return;
}
if (srcdir == NULL)
srcdir = "../../../..";
if (builddir == NULL)
builddir = defbuilddir;
if (stat(builddir, &st) == -1) {
if (mkdir(builddir, 0777) == -1)
errx(EXIT_FAILURE, "cannot create %s", builddir);
} else if (!S_ISDIR(st.st_mode))
errx(EXIT_FAILURE, "%s is not a directory", builddir);
if (chdir(builddir) == -1)
err(EXIT_FAILURE, "cannot change to %s", builddir);
if (stat(srcdir, &st) == -1)
err(EXIT_FAILURE, "cannot stat %s", srcdir);
if (!S_ISDIR(st.st_mode))
errx(EXIT_FAILURE, "%s is not a directory", srcdir);
}
/*
* 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) {
warn("cannot write ident");
return (1);
}
if (vflag)
(void)printf("using ident '%s'\n", ident);
fprintf(fp, "%s\n", ident);
fflush(fp);
if (ferror(fp))
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 = _PATH_TMP;
(void)snprintf(line, sizeof(line), "%s/config.tmp.XXXXXX", tmpdir);
if ((fd = mkstemp(line)) == -1 ||
(cfg = fdopen(fd, "r+")) == NULL) {
if (fd != -1) {
(void)unlink(line);
(void)close(fd);
}
cfg = NULL;
return;
}
(void)unlink(line);
(void)fprintf(cfg, "#include <sys/cdefs.h>\n\n");
(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[] __used =\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");
warnx("%s: newline missing at EOF",
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");
fflush(cfg);
if (ferror(cfg))
err(EXIT_FAILURE, "write to temporary file for config.h failed");
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)
err(EXIT_FAILURE, "cannot open \"config.h\"");
while (fgets(line, sizeof(line), cfg) != NULL)
fputs(line, fp);
fflush(fp);
if (ferror(fp))
err(EXIT_FAILURE, "write to \"config.h\" failed");
fclose(fp);
fclose(cfg);
}
const char *
strtolower(const char *name)
{
const char *n;
char *p, low[500];
char c;
for (n = name, p = low; (c = *n) != '\0'; n++)
*p++ = (char)(isupper((u_char)c) ? tolower((u_char)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)
err(EXIT_FAILURE, "cannot open %s", file);
if (read(kernel, hdr, 4) != 4)
err(EXIT_FAILURE, "Cannot read from %s", file);
(void)close(kernel);
return memcmp("\177ELF", hdr, 4) == 0 ? 1 : 0;
}
static int
extract_config(const char *kname, const char *cname, int cfd)
{
char *ptr;
void *base;
int found, kfd;
struct stat st;
off_t i;
found = 0;
/* mmap(2) binary kernel */
kfd = open(conffile, O_RDONLY);
if (kfd == -1)
err(EXIT_FAILURE, "cannot open %s", kname);
if (fstat(kfd, &st) == -1)
err(EXIT_FAILURE, "cannot stat %s", kname);
base = mmap(0, (size_t)st.st_size, PROT_READ, MAP_FILE | MAP_SHARED,
kfd, 0);
if (base == MAP_FAILED)
err(EXIT_FAILURE, "cannot mmap %s", kname);
ptr = base;
/* 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)
errx(EXIT_FAILURE, "line too long");
i += ptr - oldptr + 5;
(void)memcpy(line, oldptr, (size_t)(ptr - oldptr));
line[ptr - oldptr] = '\0';
j = strunvis(uline, line);
if (j == -1)
errx(EXIT_FAILURE, "unvis: invalid "
"encoded sequence");
uline[j] = '\n';
if (write(cfd, uline, (size_t)j + 1) == -1)
err(EXIT_FAILURE, "cannot write to %s", cname);
} else
ptr++;
}
(void)close(kfd);
(void)munmap(base, (size_t)st.st_size);
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 struct devbase root;
static int
addlevelparent(struct devbase *d, struct devbase *parent)
{
struct devbase *p;
if (d == parent) {
if (d->d_level > 1)
return 0;
return 1;
}
if (d->d_levelparent) {
if (d->d_level > 1)
return 0;
return 1;
}
for (p = parent; p != NULL; p = p->d_levelparent)
if (d == p && d->d_level > 1)
return 0;
d->d_levelparent = p ? p : &root;
d->d_level++;
return 1;
}
static void
do_kill_orphans(struct devbase *d, struct attr *at, struct devbase *parent,
int state)
{
struct nvlist *nv1;
struct attrlist *al;
struct attr *a;
struct devi *i, *j = NULL;
struct pspec *p;
int active = 0;
if (!addlevelparent(d, parent))
return;
/*
* 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;
int changed = 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;
}
changed |= j->i_active != state;
j->i_active = active = state;
if (p != NULL) {
if (state == DEVI_ACTIVE ||
--p->p_ref == 0)
p->p_active = state;
}
if (state == DEVI_IGNORED) {
CFGDBG(5,
"`%s' at '%s' ignored",
d->d_name, parent ?
parent->d_name : "(root)");
}
}
}
}
/*
* If we've been there but have made no change, stop.
*/
if (seen && active != DEVI_ACTIVE)
goto out;
if (active != DEVI_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;
CFGDBG(5, "`%s' at '%s' ignored", d->d_name,
parent ? parent->d_name : "(root)");
} else if (!changed)
goto out;
}
}
for (al = d->d_attrs; al != NULL; al = al->al_next) {
a = al->al_this;
for (nv1 = a->a_devs; nv1 != NULL; nv1 = nv1->nv_next) {
do_kill_orphans(nv1->nv_ptr, a, d, active);
}
}
out:
d->d_levelparent = NULL;
d->d_level--;
}
static int
/*ARGSUSED*/
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(void)
{
ht_enumerate(devroottab, kill_orphans_cb, NULL);
}
static void
add_makeopt(const char *opt)
{
struct nvlist *p;
char *buf = estrdup(opt);
char *eq = strchr(buf, '=');
if (!eq)
errx(EXIT_FAILURE, "-D %s is not in var=value format", opt);
*eq = 0;
p = newnv(estrdup(buf), estrdup(eq+1), NULL, 0, NULL);
free(buf);
p->nv_next = cmdlinedefs;
cmdlinedefs = p;
}
static void
remove_makeopt(const char *opt)
{
struct nvlist *p;
p = newnv(estrdup(opt), NULL, NULL, 0, NULL);
p->nv_next = cmdlineundefs;
cmdlineundefs = p;
}
static void
handle_cmdline_makeoptions(void)
{
struct nvlist *p, *n;
handling_cmdlineopts = 1;
for (p = cmdlineundefs; p; p = n) {
n = p->nv_next;
delmkoption(intern(p->nv_name), 0);
free(__UNCONST(p->nv_name));
nvfree(p);
}
for (p = cmdlinedefs; p; p = n) {
const char *name = intern(p->nv_name);
n = p->nv_next;
delmkoption(name, 0);
addmkoption(name, intern(p->nv_str));
free(__UNCONST(p->nv_name));
free(__UNCONST(p->nv_str));
nvfree(p);
}
handling_cmdlineopts = 0;
}
