1*314bcbf0SMark Brown // SPDX-License-Identifier: GPL-2.0
2*314bcbf0SMark Brown /*
3*314bcbf0SMark Brown * Copyright (C) 2019 Arm Limited
4*314bcbf0SMark Brown * Original author: Dave Martin <Dave.Martin@arm.com>
5*314bcbf0SMark Brown */
6*314bcbf0SMark Brown
7*314bcbf0SMark Brown #include "system.h"
8*314bcbf0SMark Brown #include "signal.h"
9*314bcbf0SMark Brown
sigemptyset(sigset_t * s)10*314bcbf0SMark Brown int sigemptyset(sigset_t *s)
11*314bcbf0SMark Brown {
12*314bcbf0SMark Brown unsigned int i;
13*314bcbf0SMark Brown
14*314bcbf0SMark Brown for (i = 0; i < _NSIG_WORDS; ++i)
15*314bcbf0SMark Brown s->sig[i] = 0;
16*314bcbf0SMark Brown
17*314bcbf0SMark Brown return 0;
18*314bcbf0SMark Brown }
19*314bcbf0SMark Brown
sigaddset(sigset_t * s,int n)20*314bcbf0SMark Brown int sigaddset(sigset_t *s, int n)
21*314bcbf0SMark Brown {
22*314bcbf0SMark Brown if (n < 1 || n > _NSIG)
23*314bcbf0SMark Brown return -EINVAL;
24*314bcbf0SMark Brown
25*314bcbf0SMark Brown s->sig[(n - 1) / _NSIG_BPW] |= 1UL << (n - 1) % _NSIG_BPW;
26*314bcbf0SMark Brown return 0;
27*314bcbf0SMark Brown }
28*314bcbf0SMark Brown
sigaction(int n,struct sigaction * sa,const struct sigaction * old)29*314bcbf0SMark Brown int sigaction(int n, struct sigaction *sa, const struct sigaction *old)
30*314bcbf0SMark Brown {
31*314bcbf0SMark Brown return syscall(__NR_rt_sigaction, n, sa, old, sizeof(sa->sa_mask));
32*314bcbf0SMark Brown }
33*314bcbf0SMark Brown
sigprocmask(int how,const sigset_t * mask,sigset_t * old)34*314bcbf0SMark Brown int sigprocmask(int how, const sigset_t *mask, sigset_t *old)
35*314bcbf0SMark Brown {
36*314bcbf0SMark Brown return syscall(__NR_rt_sigprocmask, how, mask, old, sizeof(*mask));
37*314bcbf0SMark Brown }
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