1 /* 2 * Check decoding of umode_t type syscall arguments. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * Copyright (c) 2016-2017 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 <stdio.h> 32 #include <unistd.h> 33 #include <sys/stat.h> 34 35 #ifndef TEST_SYSCALL_PREFIX_ARGS 36 # define TEST_SYSCALL_PREFIX_ARGS 37 #endif 38 #ifndef TEST_SYSCALL_PREFIX_STR 39 # define TEST_SYSCALL_PREFIX_STR "" 40 #endif 41 42 static const char *sample; 43 44 static void 45 test_syscall(unsigned short mode) 46 { 47 unsigned long lmode = (unsigned long) 0xffffffffffff0000ULL | mode; 48 long rc = syscall(TEST_SYSCALL_NR, TEST_SYSCALL_PREFIX_ARGS 49 sample, lmode); 50 51 if (mode <= 07) 52 printf("%s(%s\"%s\", 00%d) = %ld %s (%m)\n", 53 TEST_SYSCALL_STR, TEST_SYSCALL_PREFIX_STR, 54 sample, (int) mode, rc, errno2name()); 55 else 56 printf("%s(%s\"%s\", %#03ho) = %ld %s (%m)\n", 57 TEST_SYSCALL_STR, TEST_SYSCALL_PREFIX_STR, 58 sample, mode, rc, errno2name()); 59 } 60 61 int 62 main(int ac, char **av) 63 { 64 sample = av[0]; 65 test_syscall(0); 66 test_syscall(0xffff); 67 test_syscall(06); 68 test_syscall(060); 69 test_syscall(0600); 70 test_syscall(024); 71 test_syscall(S_IFREG); 72 test_syscall(S_IFDIR | 06); 73 test_syscall(S_IFLNK | 060); 74 test_syscall(S_IFIFO | 0600); 75 test_syscall(S_IFCHR | 024); 76 test_syscall((0xffff & ~S_IFMT) | S_IFBLK); 77 78 puts("+++ exited with 0 +++"); 79 return 0; 80 } 81
