diff options
| author | Florian Weimer <fweimer@redhat.com> | 2017-12-22 10:55:40 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-12-22 10:55:40 +0100 |
| commit | bad7a0c81f501fbbcc79af9eaa4b8254441c4a1f (patch) | |
| tree | 2734074b2ca53301953e238e6ce362bdc94f9604 /posix | |
| parent | 6cb86fd21ca6fdfc31042cda8c37f96c46b8a4da (diff) | |
copy_file_range: New function to copy file data
The semantics are based on the Linux system call, but a very close
emulation in user space is provided.
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/unistd.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/posix/unistd.h b/posix/unistd.h index 32b0f4898f..65317c79fd 100644 --- a/posix/unistd.h +++ b/posix/unistd.h @@ -1105,7 +1105,12 @@ extern int lockf64 (int __fd, int __cmd, __off64_t __len) __wur; do __result = (long int) (expression); \ while (__result == -1L && errno == EINTR); \ __result; })) -#endif + +/* Copy LENGTH bytes from INFD to OUTFD. */ +ssize_t copy_file_range (int __infd, __off64_t *__pinoff, + int __outfd, __off64_t *__poutoff, + size_t __length, unsigned int __flags); +#endif /* __USE_GNU */ #if defined __USE_POSIX199309 || defined __USE_UNIX98 /* Synchronize at least the data part of a file with the underlying |