1 /* 2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "tests.h" 29 #include <asm/unistd.h> 30 31 #ifdef __NR_lseek 32 33 # include <stdio.h> 34 # include <unistd.h> 35 36 int 37 main(void) 38 { 39 const kernel_ulong_t offset = (kernel_ulong_t) 0xfacefeeddeadbeefULL; 40 41 if (sizeof(offset) > sizeof(long)) { 42 /* 43 * Cannot use syscall because it takes long arguments. 44 * Let's call lseek with hope it will invoke lseek syscall. 45 */ 46 long long rc = lseek(-1, offset, SEEK_SET); 47 printf("lseek(-1, %lld, SEEK_SET) = %lld %s (%m)\n", 48 (long long) offset, rc, errno2name()); 49 } else { 50 long rc = syscall(__NR_lseek, -1L, offset, SEEK_SET); 51 printf("lseek(-1, %ld, SEEK_SET) = %ld %s (%m)\n", 52 (long) offset, rc, errno2name()); 53 } 54 55 puts("+++ exited with 0 +++"); 56 return 0; 57 } 58 59 #else 60 61 SKIP_MAIN_UNDEFINED("__NR_lseek") 62 63 #endif 64
