1 /*
2  * Copyright (c) 2017 RedHat.  All Rights Reserved.
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of version 2 of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11  *
12  * Further, this software is distributed without any warranty that it is
13  * free of the rightful claim of any third person regarding infringement
14  * or the like.  Any license provided herein, whether implied or
15  * otherwise, applies only to this software file.  Patent licenses, if
16  * any, provided herein do not apply to combinations of this program with
17  * other software, or any other product whatsoever.
18  *
19  * You should have received a copy of the GNU General Public License along
20  * with this program; if not, write the Free Software Foundation, Inc.,
21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22  *
23  * Started by Xiong Zhou <xzhou@redhat.com>
24  *
25  * DESCRIPTION
26  *     Sanity check fanotify_init flag FAN_CLOEXEC by fcntl.
27  */
28 #define _GNU_SOURCE
29 #include "config.h"
30 
31 #include <stdio.h>
32 #include <sys/stat.h>
33 #include <sys/types.h>
34 #include <fcntl.h>
35 #include <errno.h>
36 #include <string.h>
37 #include <sys/syscall.h>
38 #include "tst_test.h"
39 #include "fanotify.h"
40 
41 #if defined(HAVE_SYS_FANOTIFY_H)
42 #include <sys/fanotify.h>
43 
44 static int fd_notify;
45 
46 static void test_init_bit(unsigned int fan_bit,
47 			unsigned int fd_bit, char *msg)
48 {
49 	int ret;
50 
51 	fd_notify = SAFE_FANOTIFY_INIT(FAN_CLASS_NOTIF|fan_bit, O_RDONLY);
52 
53 	ret = SAFE_FCNTL(fd_notify, F_GETFD);
54 
55 	if ((ret & FD_CLOEXEC) == fd_bit) {
56 		tst_res(TPASS, "%s", msg);
57 	} else {
58 		tst_res(TFAIL, "%s", msg);
59 	}
60 
61 	SAFE_CLOSE(fd_notify);
62 }
63 
64 static void run(unsigned int i)
65 {
66 	switch (i) {
67 	case 0:
68 		test_init_bit(0, 0, "not set close_on_exec");
69 		break;
70 	case 1:
71 		test_init_bit(FAN_CLOEXEC, FD_CLOEXEC, "set close_on_exec");
72 		break;
73 	}
74 }
75 
76 static void cleanup(void)
77 {
78 	if (fd_notify > 0)
79 		SAFE_CLOSE(fd_notify);
80 }
81 
82 static struct tst_test test = {
83 	.test = run,
84 	.tcnt = 2,
85 	.cleanup = cleanup,
86 	.needs_root = 1,
87 };
88 
89 #else
90 	TST_TEST_TCONF("system doesn't have required fanotify support");
91 #endif
92