1 /*
2 * Copyright (c) 2008-2015 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 #include <fcntl.h>
30 #ifdef HAVE_SYS_SIGNALFD_H
31 # include <sys/signalfd.h>
32 #endif
33
34 #include "xlat/sfd_flags.h"
35
36 static int
do_signalfd(struct tcb * tcp,int flags_arg)37 do_signalfd(struct tcb *tcp, int flags_arg)
38 {
39 /* NB: kernel requires arg[2] == NSIG / 8 */
40 printfd(tcp, tcp->u_arg[0]);
41 tprints(", ");
42 print_sigset_addr_len(tcp, tcp->u_arg[1], tcp->u_arg[2]);
43 tprintf(", %lu", tcp->u_arg[2]);
44 if (flags_arg >= 0) {
45 tprints(", ");
46 printflags(sfd_flags, tcp->u_arg[flags_arg], "SFD_???");
47 }
48
49 return RVAL_DECODED | RVAL_FD;
50 }
51
SYS_FUNC(signalfd)52 SYS_FUNC(signalfd)
53 {
54 return do_signalfd(tcp, -1);
55 }
56
SYS_FUNC(signalfd4)57 SYS_FUNC(signalfd4)
58 {
59 return do_signalfd(tcp, 3);
60 }
61