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      1 /*	$NetBSD: h_inotify_directory.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_directory.c,v 1.1 2023/08/19 22:56:44 christos Exp $");
     33 
     34 #include "h_linux.h"
     35 
     36 #include <sys/null.h>
     37 
     38 #include <compat/linux/linux_syscall.h>
     39 #include <compat/linux/common/linux_inotify.h>
     40 
     41 #define	INOTIFY_ALL_DIRECTORY	(LINUX_IN_ATTRIB|LINUX_IN_CREATE \
     42 				|LINUX_IN_MOVE_SELF|LINUX_IN_MOVED_FROM \
     43 				|LINUX_IN_MOVED_TO|LINUX_IN_DELETE \
     44 				|LINUX_IN_DELETE_SELF)
     45 
     46 char buf[8192];
     47 
     48 struct {
     49 	uint32_t	mask;
     50 	bool		cookie;
     51 	char		name[16];
     52 } target_events[] = {
     53 	{ .mask = LINUX_IN_CREATE,	.cookie = 0,	.name = "test", },
     54 	{ .mask = LINUX_IN_MOVED_FROM,	.cookie = 1,	.name = "test", },
     55 	{ .mask = LINUX_IN_MOVED_TO,	.cookie = 1,	.name = "test2", },
     56 	{ .mask = LINUX_IN_DELETE,	.cookie = 0,	.name = "test2", },
     57 	{ .mask = LINUX_IN_MOVE_SELF,	.cookie = 0,	.name = "", },
     58 	{ .mask = LINUX_IN_DELETE_SELF,	.cookie = 0,	.name = "", },
     59 	{ .mask = LINUX_IN_IGNORED,	.cookie = 0,	.name = "", },
     60 };
     61 
     62 void
     63 _start(void)
     64 {
     65 	int fd, wd, targetfd;
     66 	char *cur_buf;
     67 	struct linux_inotify_event *cur_ie;
     68 
     69 	RS(mkdir("test", 0644));
     70 
     71 	RS(fd = syscall(LINUX_SYS_inotify_init));
     72 	RS(wd = syscall(LINUX_SYS_inotify_add_watch, fd, (register_t)"test",
     73 	    INOTIFY_ALL_DIRECTORY));
     74 
     75 	/* Create some events. */
     76 	RS(targetfd = open("test/test", LINUX_O_RDWR|LINUX_O_CREAT, 0644));
     77 	RS(write(targetfd, &targetfd, sizeof(targetfd)));
     78 	RS(close(targetfd));
     79 	RS(rename("test/test", "test/test2"));
     80 	RS(unlink("test/test2"));
     81 	RS(rename("test", "test2"));
     82 	RS(rmdir("test2"));
     83 
     84 	/* Check the events. */
     85 	RS(read(fd, buf, sizeof(buf)));
     86 	cur_buf = buf;
     87 	for (size_t i = 0; i < __arraycount(target_events); i++) {
     88 		cur_ie = (struct linux_inotify_event *)cur_buf;
     89 
     90 		REQUIRE(cur_ie->wd == wd);
     91 		REQUIRE(cur_ie->mask == target_events[i].mask);
     92 
     93 		if (target_events[i].cookie)
     94 			REQUIRE(cur_ie->cookie != 0);
     95 		else
     96 			REQUIRE(cur_ie->cookie == 0);
     97 
     98 		if (target_events[i].name[0] != '\0') {
     99 			REQUIRE(cur_ie->len > strlen(target_events[i].name));
    100 			REQUIRE(strcmp(cur_ie->name, target_events[i].name) == 0);
    101 		} else
    102 			REQUIRE(cur_ie->len == 0);
    103 
    104 		cur_buf += sizeof(struct linux_inotify_event) + cur_ie->len;
    105 	}
    106 
    107 	exit(0);
    108 }
    109