1 /* 2 * Check decoding of remap_file_pages 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 <asm/unistd.h> 32 33 #ifdef __NR_remap_file_pages 34 35 # include <stdio.h> 36 # include <sys/mman.h> 37 # include <unistd.h> 38 39 int 40 main(void) 41 { 42 const unsigned long addr = (unsigned long) 0xfacefeeddeadbeefULL; 43 const unsigned long size = (unsigned long) 0xdefaced1bad2f00dULL; 44 const unsigned long prot = PROT_READ|PROT_WRITE|PROT_EXEC; 45 const unsigned long pgoff = (unsigned long) 0xcaf3babebad4deedULL; 46 const unsigned long flags = MAP_PRIVATE|MAP_ANONYMOUS; 47 48 long rc = syscall(__NR_remap_file_pages, addr, size, prot, pgoff, flags); 49 printf("remap_file_pages(%#lx, %lu, %s, %lu, %s) = %ld %s (%m)\n", 50 addr, size, "PROT_READ|PROT_WRITE|PROT_EXEC", pgoff, 51 "MAP_PRIVATE|MAP_ANONYMOUS", rc, errno2name()); 52 53 puts("+++ exited with 0 +++"); 54 return 0; 55 } 56 57 #else 58 59 SKIP_MAIN_UNDEFINED("__NR_remap_file_pages") 60 61 #endif 62
