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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) 2019 Arm Limited4 * Original author: Dave Martin <Dave.Martin@arm.com>5 */6 7#include "system.h"8#include "signal.h"9 10int sigemptyset(sigset_t *s)11{12 unsigned int i;13 14 for (i = 0; i < _NSIG_WORDS; ++i)15 s->sig[i] = 0;16 17 return 0;18}19 20int sigaddset(sigset_t *s, int n)21{22 if (n < 1 || n > _NSIG)23 return -EINVAL;24 25 s->sig[(n - 1) / _NSIG_BPW] |= 1UL << (n - 1) % _NSIG_BPW;26 return 0;27}28 29int sigaction(int n, struct sigaction *sa, const struct sigaction *old)30{31 return syscall(__NR_rt_sigaction, n, sa, old, sizeof(sa->sa_mask));32}33 34int sigprocmask(int how, const sigset_t *mask, sigset_t *old)35{36 return syscall(__NR_rt_sigprocmask, how, mask, old, sizeof(*mask));37}38