unix: add Darwin support for clonefile syscalls

This commit adds support for three Darwin-specific calls that accelerate
the copying of files:

* clonefile()
* clonefileat()
* fclonefileat()

Fixes golang/go#41366

Change-Id: I7e6c525fc23d8474ea85feff24314d3d672d87ed
Reviewed-on: https://go-review.googlesource.com/c/sys/+/254757
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Stan Hu
2020-09-16 03:07:50 +00:00
committed by Ian Lance Taylor
parent 288bc346aa
commit 2334cc1a13
10 changed files with 476 additions and 8 deletions
+3
View File
@@ -401,6 +401,8 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
//sys Chroot(path string) (err error)
//sys ClockGettime(clockid int32, time *Timespec) (err error)
//sys Close(fd int) (err error)
//sys Clonefile(src string, dst string, flags int) (err error)
//sys Clonefileat(srcDirfd int, src string, dstDirfd int, dst string, flags int) (err error)
//sys Dup(fd int) (nfd int, err error)
//sys Dup2(from int, to int) (err error)
//sys Exchangedata(path1 string, path2 string, options int) (err error)
@@ -412,6 +414,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
//sys Fclonefileat(srcDirfd int, dstDirfd int, dst string, flags int) (err error)
//sys Flock(fd int, how int) (err error)
//sys Fpathconf(fd int, name int) (val int, err error)
//sys Fsync(fd int) (err error)