mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-28 23:34:53 +03:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
31 lines
1.5 KiB
C
31 lines
1.5 KiB
C
/* Copyright (C) 2002-2018 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* 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. */
|
|
#define FORK() \
|
|
INLINE_SYSCALL (clone2, 6, CLONE_PARENT_SETTID | SIGCHLD, NULL, 0, \
|
|
&pid, NULL, NULL)
|
|
|
|
#include <sysdeps/unix/sysv/linux/system.c>
|