[PATCH](conf.c & expr.h) Automatic Configuration of a Kernel
From: Ahmad Reza Cheraghi (a_r_cheraghi_at_yahoo.com)
Date: 09/26/05
- Previous message: Ahmad Reza Cheraghi: "[PATCH](Kconfig) Automatic Configuration of a Kernel"
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Date: Mon, 26 Sep 2005 05:09:10 -0700 (PDT) To: linux-kernel@vger.kernel.org
--- linux.org/scripts/kconfig/conf.c 2005-09-23
09:27:39.000000000 +0200
+++ linux-2.6.13.2/scripts/kconfig/conf.c
2005-09-24 12:03:06.000000000 +0200
@@ -9,6 +9,7 @@
#include <unistd.h>
#include <time.h>
#include <sys/stat.h>
+#include <sys/wait.h>
#define LKC_DIRECT_LINK
#include "lkc.h"
@@ -24,7 +25,9 @@
set_yes,
set_mod,
set_no,
- set_random
+ set_random,
+ set_auto,
+ set_autochoice
} input_mode = ask_all;
char *defconfig_file;
@@ -63,9 +66,51 @@
}
}
+static int auto_exec(const char* rule)
+{
+ int pd[2];
+ pid_t childpid;
+ char directory[128];
+
+ /*
+ * reading the dirctory where the rules are
+ */
+ strncpy(directory,"scripts/kconfig/rules/",
128);
+
+ strcat(directory, rule);
+
+ pipe(pd);
+
+ if (( childpid = fork() ) == 0) {
+ dup2(pd[1], STDOUT_FILENO);
+
+ close(pd[0]);
+ close(pd[1]);
+ /*
+ * calling the rule
+ */
+ system(directory);
+ exit(0);
+ }
+ close(pd[1]);
+ /*
+ * waiting for the child process to complete
+ */
+ while ( wait ((int *) 0) != childpid)
+ continue;
+ /*
+ * reading from the pipe, that is the answer
from the rule
+ */
+ read( pd[0], line, 128 );
+ close(pd[0]);
+ return 0;
+}
+
static void conf_askvalue(struct symbol *sym, const
char *def)
{
enum symbol_type type = sym_get_type(sym);
+ char *autopara;
+ size_t buflng;
tristate val;
if (!sym_has_value(sym))
@@ -89,6 +134,63 @@
return;
}
check_stdin();
+ case set_auto:
+ fflush(stdout);
+ line[0] = '\n';
+ line[1] = 0;
+ if (sym->autorule) {
+ if (sym->autopara) {
+ buflng =
strlen(sym->autopara);
+ autopara = (char*)
malloc (buflng+5);
+ sprintf(autopara, "
\"%s\"", sym->autopara);
+ strcat(sym->autorule,
autopara);
+ free(autopara);
+ }
+ auto_exec(sym->autorule);
+ }
+ if (line[0] == 'y') {
+ line[1] = '\n';
+ line[2] = 0;
+ if
(!(sym_tristate_within_range(sym, yes)))
+ line[0] = 'm';
+ }
+ else if (line[0] == 'm') {
+ line[1] = '\n';
+ line[2] = 0;
+ if
(!(sym_tristate_within_range(sym, mod)))
+ line[0] = 'y';
+ }
+ else if (line[0] == 'n') {
+ line[1] = '\n';
+ line[2] = '0';
+ }
+ else printf("%c", line[0]);
+ return;
+ case set_autochoice:
+ fflush(stdout);
+ line[0] = '\n';
+ line[1] = 0;
+ if (sym->autorule) {
+ if (sym->autopara) {
+ buflng =
strlen(sym->autopara);
+ autopara = (char*)
malloc (buflng+5);
+ sprintf(autopara, "
\"%s\"", sym->autopara);
+ strcat(sym->autorule,
autopara);
+ free(autopara);
+ }
+ auto_exec(sym->autorule);
+ if (line[0] == 'y') {
+ fflush(stdout);
+ fgets(line, 128,
stdin);
+ }
+ else {
+ line[0] = 'n';
+ line[1] = '\n';
+ line[2] = 0;
+ }
+ }
+ else printf("%c", line[0]);
+ return;
case ask_all:
fflush(stdout);
fgets(line, 128, stdin);
@@ -272,7 +374,9 @@
struct menu *child;
int type;
bool is_new;
-
+ char * autopara;
+ size_t buflng;
+
sym = menu->sym;
type = sym_get_type(sym);
is_new = !sym_has_value(sym);
@@ -301,7 +405,6 @@
while (1) {
int cnt, def;
-
printf("%*s%s\n", indent - 1, "",
menu_get_prompt(menu));
def_sym = sym_get_choice_value(sym);
cnt = def = 0;
@@ -326,6 +429,26 @@
if
(!sym_has_value(child->sym))
printf(" (NEW)");
printf("\n");
+ if (child->sym->autorule) {
+ if
(child->sym->autopara) {
+ buflng =
strlen(child->sym->autopara);
+ autopara =
(char*) malloc (buflng+4);
+
sprintf(autopara, " \"%s\"",
+
child->sym->autopara);
+
strcat(child->sym->autorule, autopara);
+
free(autopara);
+ }
+
auto_exec(child->sym->autorule);
+ }
+ if(line[0]=='y') {
+ sprintf(line, "%i",
cnt);
+ break;
+ } else {
+ line[0] = '\n';
+ line[1] = 0;
+ }
+
+
}
printf("%*schoice", indent - 1, "");
if (cnt == 1) {
@@ -348,6 +471,8 @@
case ask_all:
fflush(stdout);
fgets(line, 128, stdin);
+ case set_auto:
+ case set_autochoice:
strip(line);
if (line[0] == '?') {
printf("\n%s\n",
menu->sym->help ?
@@ -493,6 +618,12 @@
case 'o':
input_mode = ask_new;
break;
+ case 'a':
+ input_mode = set_auto;
+ break;
+ case 'c':
+ input_mode = set_autochoice;
+ break;
case 's':
input_mode = ask_silent;
valid_stdin = isatty(0) &&
isatty(1) && isatty(2);
@@ -557,6 +688,8 @@
}
case ask_all:
case ask_new:
+ case set_auto:
+ case set_autochoice:
conf_read(NULL);
break;
default:
@@ -566,7 +699,7 @@
if (input_mode != ask_silent) {
rootEntry = &rootmenu;
conf(&rootmenu);
- if (input_mode == ask_all) {
+ if (input_mode == ask_all ||
input_mode == set_auto || input_mode ==
set_autochoice) {
input_mode = ask_silent;
valid_stdin = 1;
--- linux.org/scripts/kconfig/expr.h 2005-09-23
09:27:39.000000000 +0200
+++ linux-2.6.13.2/scripts/kconfig/expr.h
2005-09-24 11:55:37.000000000 +0200
@@ -67,6 +67,8 @@
struct symbol *next;
char *name;
char *help;
+ char *autorule;
+ char *autopara;
enum symbol_type type;
struct symbol_value curr, user;
tristate visible;
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