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Fix some problems that affect multiple file inclusion. Bruce found

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this bug and submitted these patches to dunstan@.  He sent them to me
to test, and I discovered they were needed for the atmel kernel config
files.  Since we were playing with them in the terminal room after the
developer's summit today, I thought I'd go ahead and commit them to
allow those folks that now have atmel hardware (thanks Andre) a chance
to try it out w/o my help.  Since dunstan@ is asleep right now, risk
stepping on his toes a little by going ahead and committing this
change.

Submitted by: dunstan@, bde@
Tested by: bde@
This commit is contained in:
Warner Losh 2007-05-17 04:53:52 +00:00
parent 7db977fb07
commit c1f4dd9355
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=169647
3 changed files with 26 additions and 73 deletions
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2
usr.sbin/config/config.h
View File

@ -177,7 +177,7 @@ void headers(void);
void cfgfile_add(const char *);
void cfgfile_removeall(void);
extern STAILQ_HEAD(device_head, device) dtab, rmdtab;
extern STAILQ_HEAD(device_head, device) dtab;
extern char errbuf[80];
extern int yyline;

80
usr.sbin/config/config.y
View File

@ -78,7 +78,7 @@
#include "config.h"
struct device_head dtab, rmdtab;
struct device_head dtab;
char *ident;
char *env;
int envmode;
@ -105,9 +105,6 @@ devopt(char *dev)
return ret;
}
static void rmoptall(struct opt_head *list, struct opt_head *torem);
static void rmdevall(struct device_head *dh, struct device_head *torem);
%}
%%
Configuration:
@ -177,7 +174,7 @@ Config_spec:
OPTIONS Opt_list
|
NOOPTION Save_id
= { rmopt_schedule(&rmopts, $2); } |
= { rmopt_schedule(&opt, $2); } |
MAKEOPTIONS Mkopt_list
|
NOMAKEOPTION Save_id
@ -305,10 +302,10 @@ NoDevice:
= {
char *s = devopt($1);
rmopt_schedule(&rmopts, s);
rmopt_schedule(&opt, s);
free(s);
/* and the device part */
rmdev_schedule(&rmdtab, $1);
rmdev_schedule(&dtab, $1);
} ;
%%
@ -323,17 +320,14 @@ yyerror(const char *s)
int
yywrap(void)
{
if (found_defaults == 0 && incignore == 0) {
if (freopen("DEFAULTS", "r", stdin) == NULL)
return 1;
yyfile = "DEFAULTS";
if (found_defaults) {
if (freopen(PREFIX, "r", stdin) == NULL)
err(2, "%s", PREFIX);
yyfile = PREFIX;
yyline = 0;
found_defaults = 1;
found_defaults = 0;
return 0;
}
rmoptall(&opt, &rmopts);
rmdevall(&dtab, &rmdtab);
return 1;
}
@ -391,29 +385,10 @@ rmdev_schedule(struct device_head *dh, char *name)
{
struct device *dp;
dp = calloc(1, sizeof(struct device));
dp->d_name = strdup(name);
assert(dp->d_name != NULL);
STAILQ_INSERT_HEAD(dh, dp, d_next);
}
/*
* Take care a devices previously scheduled for removal.
*/
static void
rmdevall(struct device_head *dh, struct device_head *torem)
{
struct device *dp, *rdp;
while (!STAILQ_EMPTY(torem)) {
dp = STAILQ_FIRST(torem);
STAILQ_REMOVE_HEAD(torem, d_next);
rdp = finddev(dh, dp->d_name);
if (rdp != NULL) {
STAILQ_REMOVE(dh, rdp, device, d_next);
free(rdp->d_name);
free(rdp);
}
dp = finddev(dh, name);
if (dp != NULL) {
STAILQ_REMOVE(dh, dp, device, d_next);
free(dp->d_name);
free(dp);
}
}
@ -469,31 +444,10 @@ rmopt_schedule(struct opt_head *list, char *name)
{
struct opt *op;
op = calloc(1, sizeof(*op));
op->op_name = ns(name);
SLIST_INSERT_HEAD(list, op, op_next);
}
/*
* Remove all options that were scheduled for removal.
*/
static void
rmoptall(struct opt_head *list, struct opt_head *torem)
{
struct opt *op, *rop;
op = rop = NULL;
while (!SLIST_EMPTY(torem)) {
op = SLIST_FIRST(torem);
SLIST_REMOVE_HEAD(torem, op_next);
rop = findopt(list, op->op_name);
if (rop != NULL) {
SLIST_REMOVE(list, rop, opt, op_next);
free(rop->op_name);
if (rop->op_value != NULL)
free(rop->op_value);
free(rop);
}
op = findopt(list, name);
if (op != NULL) {
SLIST_REMOVE(list, op, opt, op_next);
free(op->op_name);
free(op);
}
}

17
usr.sbin/config/main.c
View File

@ -150,14 +150,14 @@ main(int argc, char **argv)
usage();
PREFIX = *argv;
/*
* We mark lack of DEFAULTS here. Once we hit EOF in PREFIX, yywrap()
* will try to bring DEFAULTS to the playground, if this exists.
*/
found_defaults = 0;
if (freopen(PREFIX, "r", stdin) == NULL)
err(2, "%s", PREFIX);
yyfile = PREFIX;
if (freopen("DEFAULTS", "r", stdin) != NULL) {
found_defaults = 1;
yyfile = "DEFAULTS";
} else {
if (freopen(PREFIX, "r", stdin) == NULL)
err(2, "%s", PREFIX);
yyfile = PREFIX;
}
if (*destdir != '\0') {
len = strlen(destdir);
while (len > 1 && destdir[len - 1] == '/')
@ -184,7 +184,6 @@ main(int argc, char **argv)
STAILQ_INIT(&fntab);
STAILQ_INIT(&ftab);
STAILQ_INIT(&hints);
STAILQ_INIT(&rmdtab);
if (yyparse())
exit(3);