97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2020 CTERA Networks. All Rights Reserved.
|
|
*
|
|
* Started by Amir Goldstein <amir73il@gmail.com>
|
|
*
|
|
* DESCRIPTION
|
|
* Check that dnotify event is reported to both parent and subdir
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include "tst_test.h"
|
|
#include "lapi/fcntl.h"
|
|
|
|
#define TEST_DIR "test_dir"
|
|
|
|
#define TEST_SIG SIGRTMIN+1
|
|
|
|
static int parent_fd, subdir_fd;
|
|
static int got_parent_event, got_subdir_event;
|
|
|
|
static void dnotify_handler(int sig, siginfo_t *si, void *data __attribute__((unused)))
|
|
{
|
|
if (si->si_fd == parent_fd)
|
|
got_parent_event = 1;
|
|
else if (si->si_fd == subdir_fd)
|
|
got_subdir_event = 1;
|
|
else
|
|
tst_brk(TBROK, "Got unexpected signal %d with si_fd %d", sig, si->si_fd);
|
|
}
|
|
|
|
static void setup_dnotify(int fd)
|
|
{
|
|
struct sigaction act;
|
|
|
|
act.sa_sigaction = dnotify_handler;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = SA_SIGINFO;
|
|
sigaction(TEST_SIG, &act, NULL);
|
|
|
|
TEST(fcntl(fd, F_SETSIG, TEST_SIG));
|
|
if (TST_RET != 0) {
|
|
tst_brk(TBROK, "F_SETSIG failed errno = %d : %s",
|
|
TST_ERR, strerror(TST_ERR));
|
|
}
|
|
TEST(fcntl(fd, F_NOTIFY, DN_ATTRIB|DN_MULTISHOT));
|
|
if (TST_RET != 0) {
|
|
tst_brk(TBROK, "F_NOTIFY failed errno = %d : %s",
|
|
TST_ERR, strerror(TST_ERR));
|
|
}
|
|
}
|
|
|
|
static void verify_dnotify(void)
|
|
{
|
|
parent_fd = SAFE_OPEN(".", O_RDONLY);
|
|
subdir_fd = SAFE_OPEN(TEST_DIR, O_RDONLY);
|
|
/* Watch "." and its children for changes */
|
|
setup_dnotify(parent_fd);
|
|
/* Also watch subdir itself for changes */
|
|
setup_dnotify(subdir_fd);
|
|
/* Generate DN_ATTRIB event on subdir that should send a signal on both fds */
|
|
SAFE_CHMOD(TEST_DIR, 0755);
|
|
if (got_parent_event)
|
|
tst_res(TPASS, "Got event on parent as expected");
|
|
else
|
|
tst_res(TFAIL, "Missing event on parent");
|
|
if (got_subdir_event)
|
|
tst_res(TPASS, "Got event on subdir as expected");
|
|
else
|
|
tst_res(TFAIL, "Missing event on subdir");
|
|
SAFE_CLOSE(parent_fd);
|
|
SAFE_CLOSE(subdir_fd);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
SAFE_MKDIR(TEST_DIR, 00700);
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
if (parent_fd > 0)
|
|
SAFE_CLOSE(parent_fd);
|
|
if (subdir_fd > 0)
|
|
SAFE_CLOSE(subdir_fd);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.needs_tmpdir = 1,
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test_all = verify_dnotify,
|
|
};
|