syscall: implement Sendfile for Darwin.
Update #5847
Summary: syscall: implement Sendfile for OpenBSD and NetBSD
R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/10980043
diff --git a/src/pkg/syscall/syscall_darwin_amd64.go b/src/pkg/syscall/syscall_darwin_amd64.go
index 2d25e59..81b1fd3 100644
--- a/src/pkg/syscall/syscall_darwin_amd64.go
+++ b/src/pkg/syscall/syscall_darwin_amd64.go
@@ -4,6 +4,8 @@
package syscall
+import "unsafe"
+
func Getpagesize() int { return 4096 }
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
@@ -51,3 +53,18 @@
func (cmsg *Cmsghdr) SetLen(length int) {
cmsg.Len = uint32(length)
}
+
+func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
+ var length = uint64(count)
+
+ _, _, e1 := Syscall6(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 0, 0)
+
+ written = int(length)
+
+ if e1 != 0 {
+ err = e1
+ }
+ return
+}
+
+func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) // sic
