• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
MPERS_PRINTER_DECL(int,fetch_struct_mmsghdr,struct tcb * const tcp,const kernel_ulong_t addr,void * const p)45 MPERS_PRINTER_DECL(int, fetch_struct_mmsghdr,
46 		   struct tcb *const tcp, const kernel_ulong_t addr,
47 		   void *const p)
48 {
49 	struct mmsghdr *p_native = p;
50 	struct_mmsghdr 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_hdr.msg_name = (void *) (unsigned long)
59 	 v_compat.msg_hdr.msg_name;
60 
61 	p_native->msg_hdr.msg_namelen =
62 	 v_compat.msg_hdr.msg_namelen;
63 
64 	p_native->msg_hdr.msg_iov = (void *) (unsigned long)
65 	 v_compat.msg_hdr.msg_iov;
66 
67 	p_native->msg_hdr.msg_iovlen =
68 	 v_compat.msg_hdr.msg_iovlen;
69 
70 	p_native->msg_hdr.msg_control = (void *) (unsigned long)
71 	 v_compat.msg_hdr.msg_control;
72 
73 	p_native->msg_hdr.msg_controllen =
74 	 v_compat.msg_hdr.msg_controllen;
75 
76 	p_native->msg_hdr.msg_flags =
77 	 v_compat.msg_hdr.msg_flags;
78 
79 	p_native->msg_len =
80 	 v_compat.msg_len;
81 
82 	return sizeof(v_compat);
83 }
84 
MPERS_PRINTER_DECL(unsigned int,sizeof_struct_mmsghdr,void)85 MPERS_PRINTER_DECL(unsigned int, sizeof_struct_mmsghdr, void)
86 {
87 	return sizeof(struct_mmsghdr);
88 }
89