1 files changed, 61 insertions, 0 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_gpl_license.c b/mdk-stage1/insmod-modutils/obj/obj_gpl_license.c
new file mode 100644
index 000000000..366b03e06
--- /dev/null
+++ b/mdk-stage1/insmod-modutils/obj/obj_gpl_license.c
@@ -0,0 +1,61 @@
+/* Return the type of license for a module.  0 for GPL, 1 for no license, 2 for
+   non-GPL.  The license parameter is set to the license string or NULL.
+
+   This file is part of the Linux modutils.
+
+   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+  */
+
+#include <string.h>
+#include "obj.h"
+
+/* This list must match *exactly* the list of allowable licenses in
+ * linux/include/linux/module.h.  Checking for leading "GPL" will not
+ * work, somebody will use "GPL sucks, this is proprietary".
+ */
+static const char *gpl_licenses[] = {
+	"GPL",
+	"GPL v2",
+	"GPL and additional rights",
+	"Dual BSD/GPL",
+	"Dual MPL/GPL",
+};
+
+int obj_gpl_license(struct obj_file *f, const char **license)
+{
+	struct obj_section *sec;
+	if ((sec = obj_find_section(f, ".modinfo"))) {
+		const char *value, *ptr, *endptr;
+		ptr = sec->contents;
+		endptr = ptr + sec->header.sh_size;
+		while (ptr < endptr) {
+			if ((value = strchr(ptr, '=')) && strncmp(ptr, "license", value-ptr) == 0) {
+				int i;
+				if (license)
+					*license = value+1;
+				for (i = 0; i < sizeof(gpl_licenses)/sizeof(gpl_licenses[0]); ++i) {
+					if (strcmp(value+1, gpl_licenses[i]) == 0)
+						return(0);
+				}
+				return(2);
+			}
+			if (strchr(ptr, '\0'))
+				ptr = strchr(ptr, '\0') + 1;
+			else
+				ptr = endptr;
+		}
+	}
+	return(1);
+}