1 /* Copyright (C) 1991, 1995 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 Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 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 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
26 /* If ACT is not NULL, change the action for SIG to *ACT.
27 If OACT is not NULL, put the old action for SIG in *OACT. */
29 DEFUN(__sigaction
, (sig
, act
, oact
),
30 int sig AND CONST
struct sigaction
*act AND
struct sigaction
*oact
)
32 struct sigvec vec
, ovec
;
34 if (sig
<= 0 || sig
>= NSIG
)
42 vec
.sv_mask
= act
->sa_mask
;
43 vec
.sv_handler
= act
->sa_handler
;
44 vec
.sv_flags
= (((act
->sa_flags
& SA_ONSTACK
) ? SV_ONSTACK
: 0) |
45 (!(act
->sa_flags
& SA_RESTART
) ? SV_INTERRUPT
: 0));
48 if (__sigvec(sig
, act
!= NULL
? &vec
: (struct sigvec
*) NULL
, &ovec
) < 0)
53 oact
->sa_handler
= (void EXFUN((*), (int))) ovec
.sv_handler
;
54 oact
->sa_mask
= ovec
.sv_mask
;
55 oact
->sa_flags
= (((ovec
.sv_flags
& SV_ONSTACK
) ? SA_ONSTACK
: 0) |
56 (!(ovec
.sv_flags
& SV_INTERRUPT
) ? SA_RESTART
: 0));
62 weak_alias (__sigaction
, sigaction
)