1/* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv@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 <errno.h> 29#include <stdio.h> 30#include <unistd.h> 31#include <sys/stat.h> 32#include <sys/mount.h> 33#include <sys/syscall.h> 34 35#ifdef __NR_oldumount 36# define TEST_SYSCALL_STR "oldumount" 37#else 38# if defined __NR_umount && defined __NR_umount2 39# define __NR_oldumount __NR_umount 40# define TEST_SYSCALL_STR "umount" 41# endif 42#endif 43 44int 45main(void) 46{ 47#ifdef __NR_oldumount 48 static const char sample[] = "umount.sample"; 49 if (mkdir(sample, 0700)) { 50 perror(sample); 51 return 77; 52 } 53 (void) syscall(__NR_oldumount, sample); 54 printf("%s(\"%s\") = -1 ", TEST_SYSCALL_STR, sample); 55 switch (errno) { 56 case ENOSYS: 57 printf("ENOSYS (%m)\n"); 58 break; 59 case EPERM: 60 printf("EPERM (%m)\n"); 61 break; 62 default: 63 printf("EINVAL (%m)\n"); 64 } 65 (void) rmdir(sample); 66 puts("+++ exited with 0 +++"); 67 return 0; 68#else 69 return 77; 70#endif 71} 72