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 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "defs.h" 34 #include "ipc_defs.h" 35 36 #ifdef HAVE_SYS_MSG_H 37 # include <sys/msg.h> 38 #elif defined HAVE_LINUX_MSG_H 39 # include <linux/msg.h> 40 #endif 41 42 #include "xlat/ipc_msg_flags.h" 43 #include "xlat/resource_flags.h" 44 45 SYS_FUNC(msgget) 46 { 47 const int key = (int) tcp->u_arg[0]; 48 if (key) 49 tprintf("%#x", key); 50 else 51 tprints("IPC_PRIVATE"); 52 tprints(", "); 53 if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0) 54 tprints("|"); 55 print_numeric_umode_t(tcp->u_arg[1] & 0777); 56 return RVAL_DECODED; 57 } 58 59 static void 60 tprint_msgsnd(struct tcb *const tcp, const kernel_ulong_t addr, 61 const kernel_ulong_t count, const unsigned int flags) 62 { 63 tprint_msgbuf(tcp, addr, count); 64 printflags(ipc_msg_flags, flags, "MSG_???"); 65 } 66 67 SYS_FUNC(msgsnd) 68 { 69 tprintf("%d, ", (int) tcp->u_arg[0]); 70 if (indirect_ipccall(tcp)) { 71 tprint_msgsnd(tcp, tcp->u_arg[3], tcp->u_arg[1], 72 tcp->u_arg[2]); 73 } else { 74 tprint_msgsnd(tcp, tcp->u_arg[1], tcp->u_arg[2], 75 tcp->u_arg[3]); 76 } 77 return RVAL_DECODED; 78 } 79 80 static void 81 tprint_msgrcv(struct tcb *const tcp, const kernel_ulong_t addr, 82 const kernel_ulong_t count, const kernel_ulong_t msgtyp) 83 { 84 tprint_msgbuf(tcp, addr, count); 85 tprintf("%" PRI_kld ", ", msgtyp); 86 } 87 88 static int 89 fetch_msgrcv_args(struct tcb *const tcp, const kernel_ulong_t addr, 90 kernel_ulong_t *const pair) 91 { 92 if (current_wordsize == sizeof(*pair)) { 93 if (umoven_or_printaddr(tcp, addr, 2 * sizeof(*pair), pair)) 94 return -1; 95 } else { 96 unsigned int tmp[2]; 97 98 if (umove_or_printaddr(tcp, addr, &tmp)) 99 return -1; 100 pair[0] = tmp[0]; 101 pair[1] = tmp[1]; 102 } 103 return 0; 104 } 105 106 SYS_FUNC(msgrcv) 107 { 108 if (entering(tcp)) { 109 tprintf("%d, ", (int) tcp->u_arg[0]); 110 } else { 111 if (indirect_ipccall(tcp)) { 112 const bool direct = 113 #ifdef SPARC64 114 current_wordsize == 8 || 115 #endif 116 get_tcb_priv_ulong(tcp) != 0; 117 if (direct) { 118 tprint_msgrcv(tcp, tcp->u_arg[3], 119 tcp->u_arg[1], tcp->u_arg[4]); 120 } else { 121 kernel_ulong_t pair[2]; 122 123 if (fetch_msgrcv_args(tcp, tcp->u_arg[3], pair)) 124 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]); 125 else 126 tprint_msgrcv(tcp, pair[0], 127 tcp->u_arg[1], pair[1]); 128 } 129 printflags(ipc_msg_flags, tcp->u_arg[2], "MSG_???"); 130 } else { 131 tprint_msgrcv(tcp, tcp->u_arg[1], 132 tcp->u_arg[2], tcp->u_arg[3]); 133 printflags(ipc_msg_flags, tcp->u_arg[4], "MSG_???"); 134 } 135 } 136 return 0; 137 } 138
