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/* Linux implementation for renameat2 function.
Copyright (C) 2018-2019 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/>. */
#include <errno.h>
#include <stdio.h>
#include <sysdep.h>
int
renameat2 (int oldfd, const char *old, int newfd, const char *new,
unsigned int flags)
{
#if !defined (__NR_renameat) || defined (__ASSUME_RENAMEAT2)
return INLINE_SYSCALL_CALL (renameat2, oldfd, old, newfd, new, flags);
#else
if (flags == 0)
return __renameat (oldfd, old, newfd, new);
# ifdef __NR_renameat2
/* For non-zero flags, try the renameat2 system call. */
int ret = INLINE_SYSCALL_CALL (renameat2, oldfd, old, newfd, new, flags);
if (ret != -1 || errno != ENOSYS)
/* Preserve non-error/non-ENOSYS return values. */
return ret;
# endif
/* No kernel (header) support for renameat2. All flags are
unknown. */
__set_errno (EINVAL);
return -1;
#endif
}
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