| //===-- 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/__support/common.h" |
| #include "src/errno/libc_errno.h" |
| #include "src/signal/linux/signal_utils.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) { |
| libc_errno = (ret > 0 ? ret : -ret); |
| return -1; |
| } |
| |
| return ret; // always 0 |
| } |
| |
| } // namespace __llvm_libc |