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      1 /*
      2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org>
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. The name of the author may not be used to endorse or promote products
     14  *    derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "tests.h"
     29 #include <stdio.h>
     30 #include <unistd.h>
     31 #include <sys/stat.h>
     32 #include <sys/mount.h>
     33 #include <asm/unistd.h>
     34 
     35 #ifdef __NR_umount2
     36 # define TEST_SYSCALL_STR "umount2"
     37 #else
     38 # define __NR_umount2 __NR_umount
     39 # define TEST_SYSCALL_STR "umount"
     40 #endif
     41 
     42 int
     43 main(void)
     44 {
     45 	static const char sample[] = "umount2.sample";
     46 	if (mkdir(sample, 0700))
     47 		perror_msg_and_fail("mkdir: %s", sample);
     48 	(void) syscall(__NR_umount2, sample, 31);
     49 	printf("%s(\"%s\", MNT_FORCE|MNT_DETACH|MNT_EXPIRE|UMOUNT_NOFOLLOW|0x10)"
     50 	       " = -1 EINVAL (%m)\n", TEST_SYSCALL_STR, sample);
     51 	if (rmdir(sample))
     52 		perror_msg_and_fail("rmdir: %s", sample);
     53 	puts("+++ exited with 0 +++");
     54 	return 0;
     55 }
     56