1 /* 2 * Copyright (c) 1993 Ulrich Pegelow <pegelow (at) moorea.uni-muenster.de> 3 * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl> 4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs (at) world.std.com> 5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert (at) cistron.nl> 6 * Copyright (c) 2003-2006 Roland McGrath <roland (at) redhat.com> 7 * Copyright (c) 2006-2015 Dmitry V. Levin <ldv (at) altlinux.org> 8 * Copyright (c) 2015-2017 The strace developers. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "defs.h" 35 36 #include DEF_MPERS_TYPE(msqid_ds_t) 37 38 #include "ipc_defs.h" 39 40 #ifdef HAVE_SYS_MSG_H 41 /* The C library generally exports the struct the current kernel expects. */ 42 # include <sys/msg.h> 43 typedef struct msqid_ds msqid_ds_t; 44 #elif defined HAVE_LINUX_MSG_H 45 /* The linux header might provide the right struct. */ 46 # include <linux/msg.h> 47 typedef struct msqid64_ds msqid_ds_t; 48 #endif 49 50 #include MPERS_DEFS 51 52 #include "xlat/msgctl_flags.h" 53 54 static void 55 print_msqid_ds(struct tcb *const tcp, const kernel_ulong_t addr, int cmd) 56 { 57 /* TODO: We don't properly decode old compat ipc calls. */ 58 if (cmd & IPC_64) 59 cmd &= ~IPC_64; 60 msqid_ds_t msqid_ds; 61 switch (cmd) { 62 case IPC_SET: 63 case IPC_STAT: 64 if (umove_or_printaddr(tcp, addr, &msqid_ds)) 65 return; 66 67 tprints("{msg_perm={"); 68 printuid("uid=", msqid_ds.msg_perm.uid); 69 printuid(", gid=", msqid_ds.msg_perm.gid); 70 tprints(", mode="); 71 print_numeric_umode_t(msqid_ds.msg_perm.mode); 72 73 if (cmd != IPC_STAT) { 74 tprints("}, ...}"); 75 break; 76 } 77 78 tprintf(", key=%u", (unsigned) msqid_ds.msg_perm.__key); 79 printuid(", cuid=", msqid_ds.msg_perm.cuid); 80 printuid(", cgid=", msqid_ds.msg_perm.cgid); 81 tprints("}"); 82 tprintf(", msg_stime=%u", (unsigned) msqid_ds.msg_stime); 83 tprintf(", msg_rtime=%u", (unsigned) msqid_ds.msg_rtime); 84 tprintf(", msg_ctime=%u", (unsigned) msqid_ds.msg_ctime); 85 tprintf(", msg_qnum=%u", (unsigned) msqid_ds.msg_qnum); 86 tprintf(", msg_qbytes=%u", (unsigned) msqid_ds.msg_qbytes); 87 tprintf(", msg_lspid=%u", (unsigned) msqid_ds.msg_lspid); 88 tprintf(", msg_lrpid=%u", (unsigned) msqid_ds.msg_lrpid); 89 tprints("}"); 90 break; 91 92 default: 93 printaddr(addr); 94 break; 95 } 96 } 97 98 SYS_FUNC(msgctl) 99 { 100 if (entering(tcp)) { 101 tprintf("%d, ", (int) tcp->u_arg[0]); 102 PRINTCTL(msgctl_flags, tcp->u_arg[1], "MSG_???"); 103 tprints(", "); 104 } else { 105 const kernel_ulong_t addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2]; 106 print_msqid_ds(tcp, addr, tcp->u_arg[1]); 107 } 108 return 0; 109 } 110
