| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2019 Arm Limited |
| * Original author: Dave Martin <Dave.Martin@arm.com> |
| */ |
| |
| #include "system.h" |
| #include "signal.h" |
| |
| int sigemptyset(sigset_t *s) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < _NSIG_WORDS; ++i) |
| s->sig[i] = 0; |
| |
| return 0; |
| } |
| |
| int sigaddset(sigset_t *s, int n) |
| { |
| if (n < 1 || n > _NSIG) |
| return -EINVAL; |
| |
| s->sig[(n - 1) / _NSIG_BPW] |= 1UL << (n - 1) % _NSIG_BPW; |
| return 0; |
| } |
| |
| int sigaction(int n, struct sigaction *sa, const struct sigaction *old) |
| { |
| return syscall(__NR_rt_sigaction, n, sa, old, sizeof(sa->sa_mask)); |
| } |
| |
| int sigprocmask(int how, const sigset_t *mask, sigset_t *old) |
| { |
| return syscall(__NR_rt_sigprocmask, how, mask, old, sizeof(*mask)); |
| } |
