Bring back the `config file in the kernel' feature from the 1.x days. This

is conditionalized by the INCLUDE_CONFIG_FILE option in your kernel config
file and is not turned on by default.

Submitted-By: Bill Pechter <pechter@shell.monmouth.com>

2 files changed, 45 insertions, 0 deletions

diff --git a/usr.sbin/config/config.8 b/usr.sbin/config/config.8
index 32cb360..35de364 100644
--- a/usr.sbin/config/config.8
+++ b/usr.sbin/config/config.8
@@ -159,6 +159,13 @@ the problems in the configuration file should be corrected and
 should be run again.
 Attempts to compile a system that had configuration errors
 are likely to fail.
+.Pp
+If the option "INCLUDE_CONFIG_FILE" is used in the configuration file the 
+entire input file is embedded in the new kernel.  This means that
+.Xr strings 1
+can be used to extract it from a kernel. 
+.Pp
+strings | grep ___ will print just the configure information.
 .Sh FILES
 .Bl -tag -width /sys/i386/conf/Makefile.i386 -compact
 .It Pa /sys/conf/files
diff --git a/usr.sbin/config/main.c b/usr.sbin/config/main.c
index a203769..76f9a55 100644
--- a/usr.sbin/config/main.c
+++ b/usr.sbin/config/main.c
@@ -199,6 +199,7 @@ usage:		fputs("usage: config [-gpn] sysname\n", stderr);
 	makefile();			/* build Makefile */
 	headers();			/* make a lot of .h files */
 	swapconf();			/* swap config files */
+	configfile();			/* put config file into kernel*/
 	printf("Kernel build directory is %s\n", p);
 	exit(0);
 }
@@ -332,6 +333,43 @@ path(file)
 	return (cp);
 }
 
+configfile()
+{
+	FILE *fi, *fo;
+	char *p;
+	int i;
+	
+	fi = fopen(PREFIX,"r");
+	if(!fi) {
+		perror(PREFIX);
+		exit(2);
+	}
+	fo = fopen(p=path("config.c"),"w");
+	if(!fo) {
+		perror(p);
+		exit(2);
+	}
+	fprintf(fo,"#ifdef INCLUDE_CONFIG_FILE \n");
+	fprintf(fo,"static char *config = \"\n");
+	fprintf(fo,"START CONFIG FILE %s\n___",PREFIX);
+	while (EOF != (i=getc(fi))) {
+		if(i == '\n') {
+			fprintf(fo,"\n___");
+		} else if(i == '\"') {
+			fprintf(fo,"\\\"");
+		} else if(i == '\\') {
+			fprintf(fo,"\\\\");
+		} else {
+			putc(i,fo);
+		}
+	}
+	fprintf(fo,"\nEND CONFIG FILE %s\n",PREFIX);
+	fprintf(fo,"\";\n");
+	fprintf(fo,"\n#endif INCLUDE_CONFIG_FILE");
+	fclose(fi);
+	fclose(fo);
+}
+
 /*
  * moveifchanged --
  *	compare two files; rename if changed.