patch-2.4.22 linux-2.4.22/scripts/mkconfigs.c

• Lines: 182
• Date: 2003-08-25 04:44:44.000000000 -0700
• Orig file: linux-2.4.21/scripts/mkconfigs.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/scripts/mkconfigs.c linux-2.4.22/scripts/mkconfigs.c
@@ -0,0 +1,181 @@
+/***************************************************************************
+ * mkconfigs.c
+ * (C) 2002 Randy Dunlap <rddunlap@osdl.org>
+
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Rules for scripts/mkconfigs.c input.config output.c
+# to generate configs.c from linux/.config:
+# - drop lines that begin with '#'
+# - drop blank lines
+# - lines that use double-quotes must \\-escape-quote them
+
+################## skeleton configs.c file: ####################
+
+#include <linux/init.h>
+#include <linux/module.h>
+
+static char *configs[] __initdata =
+
+  <insert lines selected lines of .config, quoted, with added '\n'>,
+
+;
+
+################### end configs.c file ######################
+
+ * Changelog for ver. 0.2, 2002-02-15, rddunlap@osdl.org:
+ - strip leading "CONFIG_" from config option strings;
+ - use "static" and "__attribute__((unused))";
+ - don't use EXPORT_SYMBOL();
+ - separate each config line with \newline instead of space;
+
+ * Changelog for ver. 0.3, 2002-02-18, rddunlap@osdl.org:
+ - keep all "not set" comment lines from .config so that 'make *config'
+   will be happy, but don't keep other comments;
+ - keep leading "CONFIG_" on each line;
+
+****************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#define VERSION		"0.2"
+#define LINE_SIZE	1000
+
+int include_all_lines = 1;	// whether to include "=n" lines in the output
+
+void usage (const char *progname)
+{
+	fprintf (stderr, "%s ver. %s\n", progname, VERSION);
+	fprintf (stderr, "usage:  %s input.config.name path/configs.c\n",
+			progname);
+	exit (1);
+}
+
+void make_intro (FILE *sourcefile)
+{
+	fprintf (sourcefile, "#include <linux/init.h>\n");
+/////	fprintf (sourcefile, "#include <linux/module.h>\n");
+	fprintf (sourcefile, "\n");
+/////	fprintf (sourcefile, "char *configs[] __initdata = {\n");
+	fprintf (sourcefile, "static char __attribute__ ((unused)) *configs[] __initdata = {\n");
+	fprintf (sourcefile, "  \"CONFIG_BEGIN=n\\n\" ,\n");
+}
+
+void make_ending (FILE *sourcefile)
+{
+	fprintf (sourcefile, "  \"CONFIG_END=n\\n\"\n");
+	fprintf (sourcefile, "};\n");
+/////	fprintf (sourcefile, "EXPORT_SYMBOL (configs);\n");
+}
+
+void make_lines (FILE *configfile, FILE *sourcefile)
+{
+	char cfgline[LINE_SIZE];
+	char *ch;
+
+	while (fgets (cfgline, LINE_SIZE, configfile)) {
+		/* kill the trailing newline in cfgline */
+		cfgline[strlen (cfgline) - 1] = '\0';
+
+		/* don't keep #-only line or an empty/blank line */
+		if ((cfgline[0] == '#' && cfgline[1] == '\0') ||
+		    cfgline[0] == '\0')
+			continue;
+
+		if (!include_all_lines &&
+		    cfgline[0] == '#') // strip out all comment lines
+			continue;
+
+		/* really only want to keep lines that begin with
+		 * "CONFIG_" or "# CONFIG_" */
+		if (strncmp (cfgline, "CONFIG_", 7) &&
+		    strncmp (cfgline, "# CONFIG_", 9))
+		    	continue;
+
+		/*
+		 * use strchr() to check for "-quote in cfgline;
+		 * if not found, output the line, quoted;
+		 * if found, output a char at a time, with \\-quote
+		 * preceding double-quote chars
+		 */
+		if (!strchr (cfgline, '"')) {
+			fprintf (sourcefile, "  \"%s\\n\" ,\n", cfgline);
+			continue;
+		}
+
+		/* go to char-at-a-time mode for this config and
+		 * precede any double-quote with a backslash */
+		fprintf (sourcefile, "  \"");	/* lead-in */
+		for (ch = cfgline; *ch; ch++) {
+			if (*ch == '"')
+				fputc ('\\', sourcefile);
+			fputc (*ch, sourcefile);
+		}
+		fprintf (sourcefile, "\\n\" ,\n");
+	}
+}
+
+void make_configs (FILE *configfile, FILE *sourcefile)
+{
+	make_intro (sourcefile);
+	make_lines (configfile, sourcefile);
+	make_ending (sourcefile);
+}
+
+int main (int argc, char *argv[])
+{
+	char *progname = argv[0];
+	char *configname, *sourcename;
+	FILE *configfile, *sourcefile;
+
+	if (argc != 3)
+		usage (progname);
+
+	configname = argv[1];
+	sourcename = argv[2];
+
+	configfile = fopen (configname, "r");
+	if (!configfile) {
+		fprintf (stderr, "%s: cannot open '%s'\n",
+				progname, configname);
+		exit (2);
+	}
+	sourcefile = fopen (sourcename, "w");
+	if (!sourcefile) {
+		fprintf (stderr, "%s: cannot open '%s'\n",
+				progname, sourcename);
+		exit (2);
+	}
+
+	make_configs (configfile, sourcefile);
+
+	if (fclose (sourcefile)) {
+		fprintf (stderr, "%s: error %d closing '%s'\n",
+				progname, errno, sourcename);
+		exit (3);
+	}
+	if (fclose (configfile)) {
+		fprintf (stderr, "%s: error %d closing '%s'\n",
+				progname, errno, configname);
+		exit (3);
+	}
+
+	exit (0);
+}
+
+/* end mkconfigs.c */