src/kill2.c

   1 /*
   2  * Copyright (c) 2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_APACHE_LICENSE_HEADER_START@
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  * @APPLE_APACHE_LICENSE_HEADER_END@
  19  */
  20
  21 #include <sys/syscall.h>
  22 #include <unistd.h>
  23 #include <signal.h>
  24
  25 #include "kill2.h"
  26
  27 int
  28 kill2(pid_t pid, int sig)
  29 {
  30         /*
  31          * POSIX defines consistency over correctness, and consequently
  32          * kill/killpg now returns EPERM instead of ESRCH.
  33          *
  34          * I've filed 5487498 to get a non-portable kill().
  35          * We'll regretfully take advantage of implementation details for now.
  36          */
  37         return syscall(SYS_kill, pid, sig, 0);
  38 }
  39
  40 int
  41 killpg2(pid_t pgrp, int sig)
  42 {
  43         return kill2(-pgrp, sig);
  44 }