1 /* 2 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "defs.h" 29 30 #include DEF_MPERS_TYPE(struct_msghdr) 31 32 #include "msghdr.h" 33 typedef struct msghdr struct_msghdr; 34 35 #include MPERS_DEFS 36 37 /* 38 * On success, return the number of fetched bytes. 39 * On error, return 0; 40 * 41 * This function cannot use umove_or_printaddr because 42 * it is called by dumpio and therefore cannot print anything. 43 */ 44 45 MPERS_PRINTER_DECL(int, fetch_struct_msghdr, 46 struct tcb *const tcp, const kernel_ulong_t addr, 47 void *const p) 48 { 49 struct msghdr *const p_native = p; 50 struct_msghdr v_compat; 51 52 if (sizeof(*p_native) == sizeof(v_compat)) 53 return umove(tcp, addr, p_native) ? 0 : sizeof(*p_native); 54 55 if (umove(tcp, addr, &v_compat)) 56 return 0; 57 58 p_native->msg_name = (void *) (unsigned long) 59 v_compat.msg_name; 60 61 p_native->msg_namelen = 62 v_compat.msg_namelen; 63 64 p_native->msg_iov = (void *) (unsigned long) 65 v_compat.msg_iov; 66 67 p_native->msg_iovlen = 68 v_compat.msg_iovlen; 69 70 p_native->msg_control = (void *) (unsigned long) 71 v_compat.msg_control; 72 73 p_native->msg_controllen = 74 v_compat.msg_controllen; 75 76 p_native->msg_flags = 77 v_compat.msg_flags; 78 79 return sizeof(v_compat); 80 } 81
