1 /* 2 * Check decoding of unshare syscall. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 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 32 #include <asm/unistd.h> 33 34 #ifdef __NR_unshare 35 36 # include <stdio.h> 37 # include <unistd.h> 38 39 int 40 main(void) 41 { 42 static const kernel_ulong_t bogus_flags = 43 (kernel_ulong_t) 0xbadc0ded0000000fULL; 44 45 static struct { 46 kernel_ulong_t val; 47 const char *str; 48 } unshare_flags[] = { 49 { ARG_STR(0) }, 50 { 0xdeadca75, 51 "CLONE_THREAD|CLONE_FS|CLONE_SIGHAND|CLONE_SYSVSEM|" 52 "CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET|CLONE_NEWUSER|" 53 "CLONE_NEWCGROUP|0x80a8c075" }, 54 { 0x2000000, "CLONE_NEWCGROUP" }, 55 { ARG_STR(0x81f8f0ff) " /* CLONE_??? */" }, 56 }; 57 58 long rc; 59 unsigned int i; 60 61 rc = syscall(__NR_unshare, bogus_flags); 62 printf("unshare(%#llx /* CLONE_??? */) = %s\n", 63 (unsigned long long) bogus_flags, sprintrc(rc)); 64 65 for (i = 0; i < ARRAY_SIZE(unshare_flags); i++) { 66 rc = syscall(__NR_unshare, unshare_flags[i].val); 67 printf("unshare(%s) = %s\n", 68 unshare_flags[i].str, sprintrc(rc)); 69 } 70 71 puts("+++ exited with 0 +++"); 72 73 return 0; 74 } 75 76 #else 77 78 SKIP_MAIN_UNDEFINED("__NR_unshare"); 79 80 #endif 81
