1/* $NetBSD: h_inotify_watch_change.c,v 1.1 2023/08/19 22:56:44 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2023 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Theodore Preduta. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#include <sys/cdefs.h> 32__RCSID("$NetBSD: h_inotify_watch_change.c,v 1.1 2023/08/19 22:56:44 christos Exp $"); 33 34#include "h_linux.h" 35 36#include <compat/linux/linux_syscall.h> 37#include <compat/linux/common/linux_inotify.h> 38 39struct linux_inotify_event events[2]; 40 41void 42_start(void) 43{ 44 int fd, wd, targetfd; 45 ssize_t nread; 46 47 RS(targetfd = open("test", LINUX_O_RDWR|LINUX_O_CREAT, 0644)); 48 RS(close(targetfd)); 49 50 RS(fd = syscall(LINUX_SYS_inotify_init)); 51 RS(wd = syscall(LINUX_SYS_inotify_add_watch, fd, (register_t)"test", 52 LINUX_IN_CLOSE_NOWRITE)); 53 54 /* We should only get the close event. */ 55 RS(targetfd = open("test", LINUX_O_RDONLY|LINUX_O_CREAT, 0644)); 56 RS(close(targetfd)); 57 58 RS(nread = read(fd, events, sizeof(events))); 59 REQUIRE(nread == sizeof(events[0])); 60 REQUIRE(events[0].mask == LINUX_IN_CLOSE_NOWRITE); 61 62 /* Change the watch descriptor. */ 63 RS(wd = syscall(LINUX_SYS_inotify_add_watch, fd, (register_t)"test", 64 LINUX_IN_OPEN)); 65 66 /* We should only get the open event. */ 67 RS(targetfd = open("test", LINUX_O_RDONLY|LINUX_O_CREAT, 0644)); 68 RS(close(targetfd)); 69 70 RS(nread = read(fd, events, sizeof(events))); 71 REQUIRE(nread == sizeof(events[0])); 72 REQUIRE(events[0].mask == LINUX_IN_OPEN); 73 74 /* Add to the watch descriptor. */ 75 RS(wd = syscall(LINUX_SYS_inotify_add_watch, fd, (register_t)"test", 76 LINUX_IN_CLOSE_NOWRITE|LINUX_IN_MASK_ADD)); 77 78 /* Now we should get both the open and the close. */ 79 RS(targetfd = open("test", LINUX_O_RDONLY|LINUX_O_CREAT, 0644)); 80 RS(close(targetfd)); 81 82 RS(nread = read(fd, events, sizeof(events))); 83 REQUIRE(nread == 2 * sizeof(events[0])); 84 REQUIRE(events[0].mask == LINUX_IN_OPEN); 85 REQUIRE(events[1].mask == LINUX_IN_CLOSE_NOWRITE); 86 87 exit(0); 88} 89