--- /dev/null
+#include <tools/ccanlint/ccanlint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <err.h>
+#include <string.h>
+#include <ccan/noerr/noerr.h>
+#include <ccan/talloc/talloc.h>
+
+static void check_has_info(struct manifest *m,
+ bool keep,
+ unsigned int *timeleft,
+ struct score *score)
+{
+ if (m->info_file) {
+ score->pass = true;
+ score->score = score->total;
+ } else {
+ score->error = "You have no _info file.\n\n"
+ "The file _info contains the metadata for a ccan package: things\n"
+ "like the dependencies, the documentation for the package as a whole\n"
+ "and license information.\n";
+ }
+}
+
+static const char template[] =
+ "#include <string.h>\n"
+ "#include \"config.h\"\n"
+ "\n"
+ "/**\n"
+ " * %s - YOUR-ONE-LINE-DESCRIPTION-HERE\n"
+ " *\n"
+ " * This code ... YOUR-BRIEF-SUMMARY-HERE\n"
+ " *\n"
+ " * Example:\n"
+ " * FULLY-COMPILABLE-INDENTED-TRIVIAL-BUT-USEFUL-EXAMPLE-HERE\n"
+ " */\n"
+ "int main(int argc, char *argv[])\n"
+ "{\n"
+ " /* Expect exactly one argument */\n"
+ " if (argc != 2)\n"
+ " return 1;\n"
+ "\n"
+ " if (strcmp(argv[1], \"depends\") == 0) {\n"
+ " PRINTF-CCAN-PACKAGES-YOU-NEED-ONE-PER-LINE-IF-ANY\n"
+ " return 0;\n"
+ " }\n"
+ "\n"
+ " return 1;\n"
+ "}\n";
+
+static void create_info_template(struct manifest *m, struct score *score)
+{
+ FILE *info;
+ const char *filename;
+
+ if (!ask("Should I create a template _info file for you?"))
+ return;
+
+ filename = talloc_asprintf(m, "%s/%s", m->dir, "_info");
+ info = fopen(filename, "w");
+ if (!info)
+ err(1, "Trying to create a template _info in %s", filename);
+
+ if (fprintf(info, template, m->basename) < 0) {
+ unlink_noerr(filename);
+ err(1, "Writing template into %s", filename);
+ }
+ fclose(info);
+}
+
+struct ccanlint info_exists = {
+ .key = "info_exists",
+ .name = "Module has _info file",
+ .check = check_has_info,
+ .handle = create_info_template,
+ .needs = ""
+};
+
+REGISTER_TEST(info_exists);