1 /* 2 * Check decoding of ipc 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 #if defined __NR_ipc && defined HAVE_LINUX_IPC_H 34 35 # include <errno.h> 36 # include <stdio.h> 37 # include <unistd.h> 38 # include <linux/ipc.h> 39 40 # ifndef SEMCTL 41 # define SEMCTL 3 42 # endif 43 # ifndef MSGRCV 44 # define MSGRCV 12 45 # endif 46 47 static int 48 ipc_call(const unsigned short version, const unsigned short call, 49 long a1, long a2, long a3, long a4, long a5) 50 { 51 const unsigned long val = 52 (unsigned long) 0xfacefeed00000000ULL | 53 (unsigned int) version << 16 | 54 call; 55 56 return syscall(__NR_ipc, val, a1, a2, a3, a4, a5); 57 } 58 59 static int 60 ipc_call0(const unsigned short version, const unsigned short call) 61 { 62 int rc = ipc_call(version, call, 0, 0, 0, 0, 0); 63 int saved_errno = errno; 64 printf("ipc("); 65 if (version) 66 printf("%hu<<16|", version); 67 errno = saved_errno; 68 printf("%hu, 0, 0, 0, 0%s) = %d %s (%m)\n", call, 69 # ifdef __s390__ 70 "", 71 # else 72 ", 0", 73 # endif 74 rc, errno2name()); 75 return rc; 76 } 77 78 int 79 main(void) 80 { 81 void *const efault = tail_alloc(1) + 1; 82 83 int rc = ipc_call(0, SEMCTL, 0, 0, 0, (long) efault, 0); 84 if (rc != -1 || EFAULT != errno) 85 perror_msg_and_skip("ipc"); 86 printf("semctl(0, 0, IPC_RMID, %p) = -1 EFAULT (%m)\n", efault); 87 88 unsigned short call; 89 for (call = 0; call <= 40; call += 10) { 90 ipc_call0(0, call); 91 ipc_call0(42, call); 92 } 93 94 rc = ipc_call(42, SEMCTL, 0, 0, 0, (long) efault, 0); 95 int test_version = EFAULT == errno; 96 if (test_version) 97 printf("semctl(0, 0, IPC_RMID, %p) = %d %s (%m)\n", 98 efault, rc, errno2name()); 99 else 100 printf("ipc(42<<16|SEMCTL, 0, 0, 0, %p) = %d %s (%m)\n", 101 efault, rc, errno2name()); 102 103 if (test_version) { 104 const int msqid = -2; 105 const long msgsz = -3; 106 const long msgtyp = 0; 107 108 rc = ipc_call(1, MSGRCV, 109 msqid, msgsz, IPC_NOWAIT, (long) efault, msgtyp); 110 printf("msgrcv(%d, %p, %lu, %ld, IPC_NOWAIT) = %d %s (%m)\n", 111 msqid, efault, msgsz, msgtyp, rc, errno2name()); 112 } 113 114 puts("+++ exited with 0 +++"); 115 return 0; 116 } 117 118 #else 119 120 SKIP_MAIN_UNDEFINED("__NR_ipc && HAVE_LINUX_IPC_H") 121 122 #endif 123
