glibc/posix/_Fork.c

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/* _Fork implementation. Generic version.
Copyright (C) 2021 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
/* Clone the calling process, creating an exact copy. Return -1 for errors,
0 to the new process, and the process ID of the new process to the
old process.
Different than fork, this functions is marked as async-signal-safe by
POSIX (by Austin Group issue 62). */
pid_t
_Fork (void)
{
__set_errno (ENOSYS);
return -1;
}
libc_hidden_def (_Fork)
stub_warning (_Fork)