| /* Copyright (C) 2002, 2003 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <kernel-features.h> |
| |
| /* We have to and actually can handle cancelable system(). The big |
| problem: we have to kill the child process if necessary. To do |
| this a cleanup handler has to be registered and is has to be able |
| to find the PID of the child. The main problem is to reliable have |
| the PID when needed. It is not necessary for the parent thread to |
| return. It might still be in the kernel when the cancellation |
| request comes. Therefore we have to use the clone() calls ability |
| to have the kernel write the PID into the user-level variable. */ |
| #ifdef __ASSUME_CLONE_THREAD_FLAGS |
| # define FORK() \ |
| INLINE_SYSCALL (clone2, 6, CLONE_PARENT_SETTID | SIGCHLD, NULL, 0, \ |
| &pid, NULL, NULL) |
| #endif |
| |
| #include "../system.c" |
