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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2021 Google. All Rights Reserved.
* Copyright (c) 2022 Petr Vorel <pvorel@suse.cz>
*
* Started by Matthew Bobrowski <repnop@google.com>
*/
/*\
* [Description]
*
* This source file contains a test case which ensures that the fanotify API
* returns an expected error code when provided an invalid initialization flag
* alongside FAN_REPORT_PIDFD. Additionally, it checks that the operability with
* existing FAN_REPORT_* flags is maintained and functioning as intended.
*
* NOTE: FAN_REPORT_PIDFD support was added in v5.15-rc1 in af579beb666a
* ("fanotify: add pidfd support to the fanotify API").
*/
#define _GNU_SOURCE
#include "tst_test.h"
#include <errno.h>
#ifdef HAVE_SYS_FANOTIFY_H
#include "fanotify.h"
#define MOUNT_PATH "fs_mnt"
#define FLAGS_DESC(x) .flags = x, .desc = #x
static int fd;
static struct test_case_t {
unsigned int flags;
char *desc;
int exp_errno;
} test_cases[] = {
{
FLAGS_DESC(FAN_REPORT_PIDFD | FAN_REPORT_TID),
.exp_errno = EINVAL,
},
{
FLAGS_DESC(FAN_REPORT_PIDFD | FAN_REPORT_FID | FAN_REPORT_DFID_NAME),
},
};
static void do_setup(void)
{
/*
* An explicit check for FAN_REPORT_PIDFD is performed early on in the
* test initialization as it's a prerequisite for all test cases.
*/
REQUIRE_FANOTIFY_INIT_FLAGS_SUPPORTED_ON_FS(FAN_REPORT_PIDFD,
MOUNT_PATH);
}
static void do_test(unsigned int i)
{
struct test_case_t *tc = &test_cases[i];
tst_res(TINFO, "Test %s on %s", tc->exp_errno ? "fail" : "pass",
tc->desc);
TST_EXP_FD_OR_FAIL(fd = fanotify_init(tc->flags, O_RDONLY),
tc->exp_errno);
if (fd > 0)
SAFE_CLOSE(fd);
}
static void do_cleanup(void)
{
if (fd > 0)
SAFE_CLOSE(fd);
}
static struct tst_test test = {
.setup = do_setup,
.test = do_test,
.tcnt = ARRAY_SIZE(test_cases),
.cleanup = do_cleanup,
.all_filesystems = 1,
.needs_root = 1,
.mntpoint = MOUNT_PATH,
};
#else
TST_TEST_TCONF("system doesn't have required fanotify support");
#endif /* HAVE_SYS_FANOTIFY_H */
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