133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2021 CTERA Networks. All Rights Reserved.
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*
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* Started by Amir Goldstein <amir73il@gmail.com>
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*/
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/*\
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* [Description]
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*
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* Check that dnotify DN_RENAME event is reported only on rename inside same parent.
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*/
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "tst_test.h"
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#include "lapi/fcntl.h"
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#define TEST_DIR "test_dir"
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#define TEST_DIR2 "test_dir2"
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#define TEST_FILE "test_file"
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#define TEST_SIG (SIGRTMIN+1)
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static int parent_fd, subdir_fd;
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static int got_parent_event, got_subdir_event;
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static void dnotify_handler(int sig, siginfo_t *si, void *data LTP_ATTRIBUTE_UNUSED)
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{
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if (si->si_fd == parent_fd)
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got_parent_event = 1;
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else if (si->si_fd == subdir_fd)
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got_subdir_event = 1;
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else
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tst_brk(TBROK, "Got unexpected signal %d with si_fd %d", sig, si->si_fd);
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}
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static void setup_dnotify(int fd)
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{
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struct sigaction act;
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act.sa_sigaction = dnotify_handler;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_SIGINFO;
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sigaction(TEST_SIG, &act, NULL);
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TEST(fcntl(fd, F_SETSIG, TEST_SIG));
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if (TST_RET != 0) {
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tst_brk(TBROK, "F_SETSIG failed errno = %d : %s",
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TST_ERR, strerror(TST_ERR));
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}
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TEST(fcntl(fd, F_NOTIFY, DN_RENAME|DN_MULTISHOT));
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if (TST_RET != 0) {
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tst_brk(TBROK, "F_NOTIFY failed errno = %d : %s",
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TST_ERR, strerror(TST_ERR));
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}
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}
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static void verify_dnotify(void)
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{
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parent_fd = SAFE_OPEN(".", O_RDONLY);
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subdir_fd = SAFE_OPEN(TEST_DIR, O_RDONLY);
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/* Watch renames inside ".", but not in and out of "." */
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setup_dnotify(parent_fd);
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/* Also watch for renames inside subdir, but not in and out of subdir */
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setup_dnotify(subdir_fd);
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/* Rename file from "." to subdir should not generate DN_RENAME on either */
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tst_res(TINFO, "Testing no DN_RENAME on rename from parent to subdir");
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SAFE_RENAME(TEST_FILE, TEST_DIR "/" TEST_FILE);
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if (got_parent_event)
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tst_res(TFAIL, "Got unexpected event on parent");
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else
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tst_res(TPASS, "No event on parent as expected");
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if (got_subdir_event)
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tst_res(TFAIL, "Got unexpected event on subdir");
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else
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tst_res(TPASS, "No event on subdir as expected");
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/* Rename subdir itself should generate DN_RENAME on ".", but not on itself */
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tst_res(TINFO, "Testing DN_RENAME on rename of subdir itself");
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SAFE_RENAME(TEST_DIR, TEST_DIR2);
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if (got_parent_event)
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tst_res(TPASS, "Got event on parent as expected");
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else
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tst_res(TFAIL, "Missing event on parent");
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if (got_subdir_event)
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tst_res(TFAIL, "Got unexpected event on subdir");
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else
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tst_res(TPASS, "No event on subdir as expected");
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SAFE_CLOSE(parent_fd);
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SAFE_CLOSE(subdir_fd);
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/* Cleanup before rerun */
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SAFE_RENAME(TEST_DIR2 "/" TEST_FILE, TEST_FILE);
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SAFE_RENAME(TEST_DIR2, TEST_DIR);
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got_parent_event = 0;
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got_subdir_event = 0;
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}
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static void setup(void)
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{
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SAFE_MKDIR(TEST_DIR, 00700);
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SAFE_TOUCH(TEST_FILE, 0666, NULL);
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}
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static void cleanup(void)
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{
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if (parent_fd > 0)
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SAFE_CLOSE(parent_fd);
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if (subdir_fd > 0)
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SAFE_CLOSE(subdir_fd);
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}
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static struct tst_test test = {
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test_all = verify_dnotify,
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.needs_kconfigs = (const char *[]) { "CONFIG_DNOTIFY=y", NULL },
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};
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