1 /* 2 * Check decoding of mount syscall. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) 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 } 85
