| Dmitry V. Levin | 9a8216e | 2016-06-27 00:02:50 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 Dmitry V. Levin <ldv@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_mmsghdr) |
| 31 | |
| 32 | #include "msghdr.h" |
| 33 | typedef struct mmsghdr struct_mmsghdr; |
| 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_mmsghdr, |
| 46 | struct tcb *tcp, const unsigned long addr, void *p) |
| 47 | { |
| 48 | struct mmsghdr *p_native = p; |
| 49 | struct_mmsghdr v_compat; |
| 50 | |
| 51 | if (sizeof(*p_native) == sizeof(v_compat)) |
| 52 | return umove(tcp, addr, p_native) ? 0 : sizeof(*p_native); |
| 53 | |
| 54 | if (umove(tcp, addr, &v_compat)) |
| 55 | return 0; |
| 56 | |
| 57 | p_native->msg_hdr.msg_name = (void *) (unsigned long) |
| 58 | v_compat.msg_hdr.msg_name; |
| 59 | |
| 60 | p_native->msg_hdr.msg_namelen = |
| 61 | v_compat.msg_hdr.msg_namelen; |
| 62 | |
| 63 | p_native->msg_hdr.msg_iov = (void *) (unsigned long) |
| 64 | v_compat.msg_hdr.msg_iov; |
| 65 | |
| 66 | p_native->msg_hdr.msg_iovlen = |
| 67 | v_compat.msg_hdr.msg_iovlen; |
| 68 | |
| 69 | p_native->msg_hdr.msg_control = (void *) (unsigned long) |
| 70 | v_compat.msg_hdr.msg_control; |
| 71 | |
| 72 | p_native->msg_hdr.msg_controllen = |
| 73 | v_compat.msg_hdr.msg_controllen; |
| 74 | |
| 75 | p_native->msg_hdr.msg_flags = |
| 76 | v_compat.msg_hdr.msg_flags; |
| 77 | |
| 78 | p_native->msg_len = |
| 79 | v_compat.msg_len; |
| 80 | |
| 81 | return sizeof(v_compat); |
| 82 | } |