From 44129238a240efd600340fbe42a0f7140e5f5b0f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 13 Jan 1999 13:29:55 +0000 Subject: Update. 1999-01-13 Ulrich Drepper * sysdeps/unix/sysv/linux/syscalls.list: Add __syscall_fork alias. * sysdeps/unix/sysv/linux/vfork.c: Use vfork syscall if available, otherwise use fork. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add vfork. * sysdeps/unix/sysv/linux/sparc32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/sparc64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h: Correct handling of INLINE_SYSCALL for syscall without parameters. --- sysdeps/unix/sysv/linux/vfork.c | 51 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) (limited to 'sysdeps/unix/sysv/linux/vfork.c') diff --git a/sysdeps/unix/sysv/linux/vfork.c b/sysdeps/unix/sysv/linux/vfork.c index 9b4dd5f121..de250e8ebb 100644 --- a/sysdeps/unix/sysv/linux/vfork.c +++ b/sysdeps/unix/sysv/linux/vfork.c @@ -1 +1,50 @@ -#include +/* Copyright (C) 1992, 1995, 1997, 1999 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include + +#include +#include + +extern pid_t __syscall_fork __P ((void)); + +#ifdef __NR_vfork +extern pid_t __syscall_vfork __P ((void)); + +/* Use the system call. If it's not available, fork is close enough. */ + +pid_t +__vfork __P ((void)) +{ + pid_t retval = INLINE_SYSCALL (vfork, 0); + + if (retval == (pid_t) -1 && errno == ENOSYS) + retval = INLINE_SYSCALL (fork, 0); + + return retval; +} +#else +pid_t +__vfork __P ((void)) +{ + return INLINE_SYSCALL (fork, 0); +} +#endif + +weak_alias (__vfork, vfork) -- cgit v1.2.1