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44129238a2
1999-01-13 Ulrich Drepper <drepper@cygnus.com> * 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.
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Copyright (C) 1992, 1995, 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <unistd.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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extern pid_t __syscall_fork __P ((void));
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#ifdef __NR_vfork
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extern pid_t __syscall_vfork __P ((void));
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/* Use the system call. If it's not available, fork is close enough. */
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pid_t
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__vfork __P ((void))
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{
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pid_t retval = INLINE_SYSCALL (vfork, 0);
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if (retval == (pid_t) -1 && errno == ENOSYS)
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retval = INLINE_SYSCALL (fork, 0);
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return retval;
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}
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#else
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pid_t
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__vfork __P ((void))
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{
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return INLINE_SYSCALL (fork, 0);
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}
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#endif
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weak_alias (__vfork, vfork)
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