Add man page

src/elfpatch.c

@@ -1,3 +1,21 @@
+/*
+ * This file is part of patchelfcrc.
+ * Copyright (c) 2022 Mario Hüttel.
+ *
+ * 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, version 2 only.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #include <patchelfcrc/elfpatch.h>
 #include <patchelfcrc/reporting.h>
 #include <unistd.h>

src/main.c

@@ -373,6 +373,11 @@ int main(int argc, char **argv)
 		reporting_enable_verbose();
 	print_verbose_start_info(&cmd_opts);
 
+	if (cmd_opts.list) {
+		list_predefined_crcs();
+		goto free_cmds;
+	}
+
 	/* Check if file has been supplied */
 	if (!cmd_opts.elf_path) {
 		print_err("No ELF file specified. Exiting...\n");
@@ -383,11 +388,6 @@ int main(int argc, char **argv)
 		print_err("No output section specified. Will continue but not patch file.\n");
 	}
 
-	if (cmd_opts.list) {
-		list_predefined_crcs();
-		goto free_cmds;
-	}
-
 	/* Do error printing if using a reversed polynomial. It is not implemented yet! */
 	if (cmd_opts.crc.rev) {
 		print_err("Reversed polynomials are not supported yet\nExiting...\n");