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//===-- Linux implementation of kill --------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/signal/kill.h"
#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/signal/linux/signal_utils.h"
#include "src/__support/common.h"
#include <errno.h>
#include <signal.h>
#include <sys/syscall.h> // For syscall numbers.
namespace __llvm_libc {
LLVM_LIBC_FUNCTION(int, kill, (pid_t pid, int sig)) {
int ret = __llvm_libc::syscall_impl(SYS_kill, pid, sig);
// A negative return value indicates an error with the magnitude of the
// value being the error code.
if (ret != 0) {
errno = (ret > 0 ? ret : -ret);
return -1;
}
return ret; // always 0
}
} // namespace __llvm_libc
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