// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
 *
 * Basic fsconfig() failure tests.
 */
#include "tst_test.h"
#include "lapi/fsmount.h"

static int fd = -1, temp_fd = -1, invalid_fd = -1;
static int aux_0 = 0, aux_1 = 1, aux_fdcwd = AT_FDCWD, aux_minus1 = -1;

static struct tcase {
	char *name;
	int *fd;
	unsigned int cmd;
	const char *key;
	const void *value;
	int *aux;
	int exp_errno;
} tcases[] = {
	{"invalid-fd", &invalid_fd, FSCONFIG_SET_FLAG, "user_xattr", NULL, &aux_0, EINVAL},
	{"invalid-cmd", &fd, 100, "rw", NULL, &aux_0, EOPNOTSUPP},
	{"set-flag-key", &fd, FSCONFIG_SET_FLAG, NULL, NULL, &aux_0, EINVAL},
	{"set-flag-value", &fd, FSCONFIG_SET_FLAG, "rw", "foo", &aux_0, EINVAL},
	{"set-flag-aux", &fd, FSCONFIG_SET_FLAG, "rw", NULL, &aux_1, EINVAL},
	{"set-string-key", &fd, FSCONFIG_SET_STRING, NULL, "#grand.central.org:root.cell.", &aux_0, EINVAL},
	{"set-string-value", &fd, FSCONFIG_SET_STRING, "source", NULL, &aux_0, EINVAL},
	{"set-string-aux", &fd, FSCONFIG_SET_STRING, "source", "#grand.central.org:root.cell.", &aux_1, EINVAL},
	{"set-binary-key", &fd, FSCONFIG_SET_BINARY, NULL, "foo", &aux_1, EINVAL},
	{"set-binary-value", &fd, FSCONFIG_SET_BINARY, "sync", NULL, &aux_1, EINVAL},
	{"set-binary-aux", &fd, FSCONFIG_SET_BINARY, "sync", "foo", &aux_0, EINVAL},
	{"set-path-key", &fd, FSCONFIG_SET_PATH, NULL, "/dev/foo", &aux_fdcwd, EINVAL},
	{"set-path-value", &fd, FSCONFIG_SET_PATH, "sync", NULL, &aux_fdcwd, EINVAL},
	{"set-path-aux", &fd, FSCONFIG_SET_PATH, "sync", "/dev/foo", &aux_minus1, EINVAL},
	{"set-path-empty-key", &fd, FSCONFIG_SET_PATH_EMPTY, NULL, "/dev/foo", &aux_fdcwd, EINVAL},
	{"set-path-empty-value", &fd, FSCONFIG_SET_PATH_EMPTY, "sync", NULL, &aux_fdcwd, EINVAL},
	{"set-path-empty-aux", &fd, FSCONFIG_SET_PATH_EMPTY, "sync", "/dev/foo", &aux_minus1, EINVAL},
	{"set-fd-key", &fd, FSCONFIG_SET_FD, NULL, NULL, &temp_fd, EINVAL},
	{"set-fd-value", &fd, FSCONFIG_SET_FD, "sync", "foo", &temp_fd, EINVAL},
	{"set-fd-aux", &fd, FSCONFIG_SET_FD, "sync", NULL, &aux_minus1, EINVAL},
	{"cmd-create-key", &fd, FSCONFIG_CMD_CREATE, "foo", NULL, &aux_0, EINVAL},
	{"cmd-create-value", &fd, FSCONFIG_CMD_CREATE, NULL, "foo", &aux_0, EINVAL},
	{"cmd-create-aux", &fd, FSCONFIG_CMD_CREATE, NULL, NULL, &aux_1, EINVAL},
	{"cmd-reconfigure-key", &fd, FSCONFIG_CMD_RECONFIGURE, "foo", NULL, &aux_0, EINVAL},
	{"cmd-reconfigure-value", &fd, FSCONFIG_CMD_RECONFIGURE, NULL, "foo", &aux_0, EINVAL},
	{"cmd-reconfigure-aux", &fd, FSCONFIG_CMD_RECONFIGURE, NULL, NULL, &aux_1, EINVAL},
};

static void setup(void)
{
	fsopen_supported_by_kernel();

	TEST(fd = fsopen(tst_device->fs_type, 0));
	if (fd == -1)
		tst_brk(TBROK | TTERRNO, "fsopen() failed");

	temp_fd = SAFE_OPEN("testfile", O_RDWR | O_CREAT, 01444);
}

static void cleanup(void)
{
	if (temp_fd != -1)
		SAFE_CLOSE(temp_fd);
	if (fd != -1)
		SAFE_CLOSE(fd);
}

static void run(unsigned int n)
{
	struct tcase *tc = &tcases[n];

	TEST(fsconfig(*tc->fd, tc->cmd, tc->key, tc->value, *tc->aux));

	if (TST_RET != -1) {
		tst_res(TFAIL, "%s: fsconfig() succeeded unexpectedly (index: %d)",
			tc->name, n);
		return;
	}

	if (tc->exp_errno != TST_ERR) {
		tst_res(TFAIL | TTERRNO, "%s: fsconfig() should fail with %s",
			tc->name, tst_strerrno(tc->exp_errno));
		return;
	}

	tst_res(TPASS | TTERRNO, "%s: fsconfig() failed as expected", tc->name);
}

static struct tst_test test = {
	.tcnt = ARRAY_SIZE(tcases),
	.test = run,
	.setup = setup,
	.cleanup = cleanup,
	.needs_root = 1,
	.needs_device = 1,
};