Branch data Line data Source code
1 : : /*
2 : : * Copyright (c) 2008-2015 Dmitry V. Levin <ldv@altlinux.org>
3 : : * Copyright (c) 2015-2017 The strace developers.
4 : : * All rights reserved.
5 : : *
6 : : * Redistribution and use in source and binary forms, with or without
7 : : * modification, are permitted provided that the following conditions
8 : : * are met:
9 : : * 1. Redistributions of source code must retain the above copyright
10 : : * notice, this list of conditions and the following disclaimer.
11 : : * 2. Redistributions in binary form must reproduce the above copyright
12 : : * notice, this list of conditions and the following disclaimer in the
13 : : * documentation and/or other materials provided with the distribution.
14 : : * 3. The name of the author may not be used to endorse or promote products
15 : : * derived from this software without specific prior written permission.
16 : : *
17 : : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 : : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 : : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 : : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 : : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 : : * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 : : * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 : : * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 : : * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 : : */
28 : :
29 : : #include "defs.h"
30 : : #include <fcntl.h>
31 : : #ifdef HAVE_SYS_SIGNALFD_H
32 : : # include <sys/signalfd.h>
33 : : #endif
34 : :
35 : : #include "xlat/sfd_flags.h"
36 : :
37 : : static int
38 : 2 : do_signalfd(struct tcb *tcp, int flags_arg)
39 : : {
40 : : /* NB: kernel requires arg[2] == NSIG_BYTES */
41 : 2 : printfd(tcp, tcp->u_arg[0]);
42 : 2 : tprints(", ");
43 : 2 : print_sigset_addr_len(tcp, tcp->u_arg[1], tcp->u_arg[2]);
44 : 2 : tprintf(", %" PRI_klu, tcp->u_arg[2]);
45 [ + - ]: 2 : if (flags_arg >= 0) {
46 : 2 : tprints(", ");
47 : 2 : printflags(sfd_flags, tcp->u_arg[flags_arg], "SFD_???");
48 : : }
49 : :
50 : 2 : return RVAL_DECODED | RVAL_FD;
51 : : }
52 : :
53 : 0 : SYS_FUNC(signalfd)
54 : : {
55 : 0 : return do_signalfd(tcp, -1);
56 : : }
57 : :
58 : 2 : SYS_FUNC(signalfd4)
59 : : {
60 : 2 : return do_signalfd(tcp, 3);
61 : : }
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