diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/renameat2.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/renameat2.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/renameat2.c b/sysdeps/unix/sysv/linux/renameat2.c new file mode 100644 index 0000000000..919bb2a0d4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/renameat2.c @@ -0,0 +1,44 @@ +/* Linux implementation for renameat2 function. + Copyright (C) 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/>. */ + +#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 +} |