| Dmitry V. Levin | f8da0f3 | 2016-05-25 00:11:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Check decoding of mount syscall. |
| 3 | * |
| 4 | * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include "tests.h" |
| 31 | #include <stdio.h> |
| 32 | #include <unistd.h> |
| 33 | #include <sys/mount.h> |
| 34 | |
| 35 | #ifndef MS_MGC_VAL |
| 36 | # define MS_MGC_VAL 0xC0ED0000 |
| 37 | #endif |
| 38 | |
| 39 | #ifndef MS_RELATIME |
| 40 | # define MS_RELATIME (1ul << 21) |
| 41 | #endif |
| 42 | |
| 43 | #define str_ro_nosuid_nodev_noexec "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC" |
| 44 | |
| 45 | int |
| 46 | main(void) |
| 47 | { |
| 48 | static const char source[] = "mount_source"; |
| 49 | static const char target[] = "mount_target"; |
| 50 | static const char fstype[] = "mount_fstype"; |
| 51 | static const char data[] = "mount_data"; |
| 52 | |
| 53 | int rc = mount(source, target, fstype, 15, data); |
| 54 | printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", |
| 55 | source, target, fstype, str_ro_nosuid_nodev_noexec, |
| 56 | data, rc, errno2name()); |
| 57 | |
| 58 | rc = mount(source, target, fstype, MS_RELATIME | 15, data); |
| 59 | printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", |
| 60 | source, target, fstype, |
| 61 | str_ro_nosuid_nodev_noexec "|MS_RELATIME", |
| 62 | data, rc, errno2name()); |
| 63 | |
| 64 | rc = mount(source, target, fstype, MS_MGC_VAL, data); |
| 65 | printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", |
| 66 | source, target, fstype, "MS_MGC_VAL", data, rc, errno2name()); |
| 67 | |
| 68 | rc = mount(source, target, fstype, MS_MGC_VAL | 15, data); |
| 69 | printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %d %s (%m)\n", |
| 70 | source, target, fstype, |
| 71 | "MS_MGC_VAL|" str_ro_nosuid_nodev_noexec, |
| 72 | data, rc, errno2name()); |
| 73 | |
| 74 | rc = mount(source, target, fstype, MS_REMOUNT, data); |
| 75 | printf("mount(\"%s\", \"%s\", %p, %s, \"%s\") = %d %s (%m)\n", |
| 76 | source, target, fstype, "MS_REMOUNT", data, rc, errno2name()); |
| 77 | |
| 78 | rc = mount(source, target, fstype, MS_BIND, data); |
| 79 | printf("mount(\"%s\", \"%s\", %p, %s, %p) = %d %s (%m)\n", |
| 80 | source, target, fstype, "MS_BIND", data, rc, errno2name()); |
| 81 | |
| 82 | puts("+++ exited with 0 +++"); |
| 83 | return 0; |
| 84 | } |