/*
 * Copyright (C) 2012  ProFUSION embedded systems
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <errno.h>
#include <unistd.h>
#include <inttypes.h>
#include <string.h>
#include <libkmod.h>

#include "testsuite.h"

static int loaded_1(const struct test *t)
{
	struct kmod_ctx *ctx;
	const char *null_config = NULL;
	struct kmod_list *list, *itr;
	int err;

	ctx = kmod_new(NULL, &null_config);
	if (ctx == NULL)
		exit(EXIT_FAILURE);

	err = kmod_module_new_from_loaded(ctx, &list);
	if (err < 0) {
		fprintf(stderr, "%s\n", strerror(-err));
		kmod_unref(ctx);
		exit(EXIT_FAILURE);
	}

	printf("Module                  Size  Used by\n");

	kmod_list_foreach(itr, list) {
		struct kmod_module *mod = kmod_module_get_module(itr);
		const char *name = kmod_module_get_name(mod);
		int use_count = kmod_module_get_refcnt(mod);
		long size = kmod_module_get_size(mod);
		struct kmod_list *holders, *hitr;
		int first = 1;

		printf("%-19s %8ld  %d ", name, size, use_count);
		holders = kmod_module_get_holders(mod);
		kmod_list_foreach(hitr, holders) {
			struct kmod_module *hm = kmod_module_get_module(hitr);

			if (!first)
				putchar(',');
			else
				first = 0;

			fputs(kmod_module_get_name(hm), stdout);
			kmod_module_unref(hm);
		}
		putchar('\n');
		kmod_module_unref_list(holders);
		kmod_module_unref(mod);
	}
	kmod_module_unref_list(list);

	kmod_unref(ctx);

	return EXIT_SUCCESS;
}
static const struct test sloaded_1 = {
	.name = "sloaded_1",
	.description = "check if list of module is created",
	.func = loaded_1,
	.config = {
		[TC_ROOTFS] = TESTSUITE_ROOTFS "test-loaded/",
	},
	.need_spawn = true,
	.output = {
		.stdout = TESTSUITE_ROOTFS "test-loaded/correct.txt",
	},
};

static const struct test *tests[] = {
	&sloaded_1,
	NULL,
};

int main(int argc, char *argv[])
{
	const struct test *t;
	int arg;
	size_t i;

	arg = test_init(argc, argv, tests);
	if (arg == 0)
		return 0;

	if (arg < argc) {
		t = test_find(tests, argv[arg]);
		if (t == NULL) {
			fprintf(stderr, "could not find test %s\n", argv[arg]);
			exit(EXIT_FAILURE);
		}

		return test_run(t);
	}

	for (i = 0; tests[i] != NULL; i++) {
		if (test_run(tests[i]) != 0)
			exit(EXIT_FAILURE);
	}

	exit(EXIT_SUCCESS);
}
