launchd/src/launchd_runtime_kill.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 #if !defined(__LP64__) && !defined(__arm__)
  22 #define _NONSTD_SOURCE 1
  23 #define old_kill(x, y) kill(x, y)
  24 #define old_killpg(x, y) killpg(x, y)
  25 #else
  26 /* ??? No blessed way to get the old behavior */
  27 extern int __kill(int, int, int);
  28 #define old_kill(x, y) __kill(x, y, 0)
  29 #define old_killpg(x, y) __kill(-(x), y, 0)
  30 #endif
  31 #include <signal.h>
  32
  33 #include "launchd_runtime_kill.h"
  34
  35 /*
  36  * POSIX defines consistency over correctness, and consequently kill/killpg now
  37  * returns EPERM instead of ESRCH.
  38  *
  39  * I've filed 5487498 to get a non-portable kill() variant, but for now,
  40  * defining _NONSTD_SOURCE gets us the old behavior.
  41  */
  42
  43 int
  44 runtime_kill(pid_t pid, int sig)
  45 {
  46         return old_kill(pid, sig);
  47 }
  48
  49 int
  50 runtime_killpg(pid_t pgrp, int sig)
  51 {
  52         return old_killpg(pgrp, sig);
  53 }