1d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* 2d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Check decoding of mount syscall. 3d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 4d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> 5d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * All rights reserved. 6d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 7d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Redistribution and use in source and binary forms, with or without 8d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * modification, are permitted provided that the following conditions 9d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * are met: 10d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 1. Redistributions of source code must retain the above copyright 11d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer. 12d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 13d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer in the 14d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * documentation and/or other materials provided with the distribution. 15d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 3. The name of the author may not be used to endorse or promote products 16d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * derived from this software without specific prior written permission. 17d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 18d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes */ 29d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 30d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include "tests.h" 31d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <stdio.h> 32d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <unistd.h> 33d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <sys/mount.h> 34d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 35d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#ifndef MS_MGC_VAL 36d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# define MS_MGC_VAL 0xC0ED0000 37d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#endif 38d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#ifndef MS_RELATIME 40d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# define MS_RELATIME (1ul << 21) 41d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#endif 42d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 43d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#define str_ro_nosuid_nodev_noexec "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC" 44d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 45d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesint 46d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesmain(void) 47d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 48d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const char source[] = "mount_source"; 49d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const char target[] = "mount_target"; 50d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const char fstype[] = "mount_fstype"; 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const char data[] = "mount_data"; 52d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 53d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes int rc = mount(source, target, fstype, 15, data); 54d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", 55d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, str_ro_nosuid_nodev_noexec, 56d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes data, rc, errno2name()); 57d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 58d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = mount(source, target, fstype, MS_RELATIME | 15, data); 59d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", 60d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, 61d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes str_ro_nosuid_nodev_noexec "|MS_RELATIME", 62d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes data, rc, errno2name()); 63d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 64d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = mount(source, target, fstype, MS_MGC_VAL, data); 65d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", 66d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, "MS_MGC_VAL", data, rc, errno2name()); 67d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 68d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = mount(source, target, fstype, MS_MGC_VAL | 15, data); 69d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", 70d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, 71d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "MS_MGC_VAL|" str_ro_nosuid_nodev_noexec, 72d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes data, rc, errno2name()); 73d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 74d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = mount(source, target, fstype, MS_REMOUNT, data); 75d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", %p, %s, \"%s\") = %d %s (%m)\n", 76d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, "MS_REMOUNT", data, rc, errno2name()); 77d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 78d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = mount(source, target, fstype, MS_BIND, data); 79d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("mount(\"%s\", \"%s\", %p, %s, %p) = %d %s (%m)\n", 80d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes source, target, fstype, "MS_BIND", data, rc, errno2name()); 81d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 82d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes puts("+++ exited with 0 +++"); 83d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes return 0; 84d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 85