1 /* 2 * Check decoding of mount syscall. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * Copyright (c) 2016-2018 The strace developers. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "tests.h" 32 #include <stdio.h> 33 #include <unistd.h> 34 #include <sys/mount.h> 35 36 #ifndef MS_MGC_VAL 37 # define MS_MGC_VAL 0xC0ED0000 38 #endif 39 40 #ifndef MS_RELATIME 41 # define MS_RELATIME (1ul << 21) 42 #endif 43 44 #if XLAT_RAW 45 # define str_unknown "0x300" 46 # define str_submount_200 "0x4000200" 47 # define str_mgc_val "0xc0ed0000" 48 # define str_remount "0x20" 49 # define str_bind "0x1000" 50 # define str_ro_nosuid_nodev_noexec "0xf" 51 # define str_ro_nosuid_nodev_noexec_relatime "0x20000f" 52 #elif XLAT_VERBOSE 53 # define str_unknown "0x300 /* MS_??? */" 54 # define str_submount_200 "0x4000200 /* MS_SUBMOUNT|0x200 */" 55 # define str_mgc_val "0xc0ed0000 /* MS_MGC_VAL */" 56 # define str_remount "0x20 /* MS_REMOUNT */" 57 # define str_bind "0x1000 /* MS_BIND */" 58 # define str_ro_nosuid_nodev_noexec \ 59 "0xf /* MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC */" 60 # define str_ro_nosuid_nodev_noexec_relatime \ 61 "0x20000f /* MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_RELATIME */" 62 #else /* !XLAT_RAW && !XLAT_VERBOSE */ 63 # define str_unknown "0x300 /* MS_??? */" 64 # define str_submount_200 "MS_SUBMOUNT|0x200" 65 # define str_mgc_val "MS_MGC_VAL" 66 # define str_remount "MS_REMOUNT" 67 # define str_bind "MS_BIND" 68 # define str_ro_nosuid_nodev_noexec "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC" 69 # define str_ro_nosuid_nodev_noexec_relatime \ 70 "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_RELATIME" 71 #endif /* XLAT_RAW, XLAT_VERBOSE */ 72 73 int 74 main(void) 75 { 76 static const char source[] = "mount_source"; 77 static const char target[] = "mount_target"; 78 static const char fstype[] = "mount_fstype"; 79 static const char data[] = "mount_data"; 80 TAIL_ALLOC_OBJECT_CONST_PTR(char, bogus); 81 82 bogus[0] = 'a'; 83 84 int rc = mount(NULL, NULL, NULL, 0, NULL); 85 printf("mount(NULL, NULL, NULL, 0, NULL) = %s\n", 86 sprintrc(rc)); 87 88 rc = mount(bogus, bogus, bogus, 768, bogus); 89 printf("mount(%p, %p, %p, %s, %p) = %s\n", 90 bogus, bogus, bogus, str_unknown, bogus, sprintrc(rc)); 91 92 rc = mount(bogus + 1, bogus + 1, bogus + 1, 0x4000200, bogus + 1); 93 printf("mount(%p, %p, %p, %s, %p) = %s\n", 94 bogus + 1, bogus + 1, bogus + 1, str_submount_200, 95 bogus + 1, sprintrc(rc)); 96 97 rc = mount(source, target, fstype, 15, data); 98 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n", 99 source, target, fstype, str_ro_nosuid_nodev_noexec, 100 data, sprintrc(rc)); 101 102 rc = mount(source, target, fstype, MS_RELATIME | 15, data); 103 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n", 104 source, target, fstype, 105 str_ro_nosuid_nodev_noexec_relatime, 106 data, sprintrc(rc)); 107 108 rc = mount(source, target, fstype, MS_MGC_VAL, data); 109 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n", 110 source, target, fstype, str_mgc_val, data, sprintrc(rc)); 111 112 rc = mount(source, target, fstype, MS_MGC_VAL | 15, data); 113 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n", 114 source, target, fstype, 115 str_mgc_val "|" str_ro_nosuid_nodev_noexec, 116 data, sprintrc(rc)); 117 118 rc = mount(source, target, NULL, MS_REMOUNT, data); 119 printf("mount(\"%s\", \"%s\", NULL, %s, \"%s\") = %s\n", 120 source, target, str_remount, data, sprintrc(rc)); 121 122 rc = mount(source, target, fstype, MS_REMOUNT, data); 123 printf("mount(\"%s\", \"%s\", %p, %s, \"%s\") = %s\n", 124 source, target, fstype, str_remount, data, sprintrc(rc)); 125 126 rc = mount(source, target, NULL, MS_BIND, data); 127 printf("mount(\"%s\", \"%s\", NULL, %s, %p) = %s\n", 128 source, target, str_bind, data, sprintrc(rc)); 129 130 rc = mount(source, target, fstype, MS_BIND, NULL); 131 printf("mount(\"%s\", \"%s\", %p, %s, NULL) = %s\n", 132 source, target, fstype, str_bind, sprintrc(rc)); 133 134 puts("+++ exited with 0 +++"); 135 return 0; 136 } 137
