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| author | Florian Weimer <fweimer@redhat.com> | 2018-07-05 18:59:02 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2018-07-05 19:00:10 +0200 |
| commit | d6da5cb6a8e0e8a9ce92b7d951a254cf325248d7 (patch) | |
| tree | 4c8f50e0ec6b6780eb1eb4dd2b496f0a1b1411d3 /libio | |
| parent | 1002d708232dda9ebff65f6c1409fa067a01b6e0 (diff) | |
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Add renameat2 function [BZ #17662]
The implementation falls back to renameat if renameat2 is not available
in the kernel (or in the kernel headers) and the flags argument is zero.
Without kernel support, a non-zero argument returns EINVAL, not ENOSYS.
This mirrors what the kernel does for invalid renameat2 flags.
Diffstat (limited to 'libio')
| -rw-r--r-- | libio/stdio.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libio/stdio.h b/libio/stdio.h index 731f8e56f4..739e08610d 100644 --- a/libio/stdio.h +++ b/libio/stdio.h @@ -153,6 +153,18 @@ extern int renameat (int __oldfd, const char *__old, int __newfd, const char *__new) __THROW; #endif +#ifdef __USE_GNU +/* Flags for renameat2. */ +# define RENAME_NOREPLACE (1 << 0) +# define RENAME_EXCHANGE (1 << 1) +# define RENAME_WHITEOUT (1 << 2) + +/* Rename file OLD relative to OLDFD to NEW relative to NEWFD, with + additional flags. */ +extern int renameat2 (int __oldfd, const char *__old, int __newfd, + const char *__new, unsigned int __flags) __THROW; +#endif + /* Create a temporary file and open it read/write. This function is a possible cancellation point and therefore not |