1 /* Copyright (C) 1997-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
23 #include <sys/syscall.h>
25 /* The difference here is that the sigaction structure used in the
26 kernel is not the same as we use in the libc. Therefore we must
28 #include <kernel_sigaction.h>
31 /* If ACT is not NULL, change the action for SIG to *ACT.
32 If OACT is not NULL, put the old action for SIG in *OACT. */
34 __libc_sigaction (int sig
, const struct sigaction
*act
, struct sigaction
*oact
)
38 struct kernel_sigaction kact
, koact
;
42 kact
.k_sa_handler
= act
->sa_handler
;
43 memcpy (&kact
.sa_mask
, &act
->sa_mask
, sizeof (sigset_t
));
44 kact
.sa_flags
= act
->sa_flags
;
45 #ifdef HAVE_SA_RESTORER
46 kact
.sa_restorer
= act
->sa_restorer
;
50 /* XXX The size argument hopefully will have to be changed to the
51 real size of the user-level sigset_t. */
52 result
= INLINE_SYSCALL (rt_sigaction
, 4, sig
,
54 oact
? &koact
: NULL
, _NSIG
/ 8);
56 if (oact
&& result
>= 0)
58 oact
->sa_handler
= koact
.k_sa_handler
;
59 memcpy (&oact
->sa_mask
, &koact
.sa_mask
, sizeof (sigset_t
));
60 oact
->sa_flags
= koact
.sa_flags
;
61 #ifdef HAVE_SA_RESTORER
62 oact
->sa_restorer
= koact
.sa_restorer
;
67 libc_hidden_def (__libc_sigaction
)
69 #include <nptl/sigaction.c>