doc, api: add syscall.SysProcAttr.AmbientCaps change to 1.9 notes, API

Updates #20587 Change-Id: I08377281270631ee08cd05ba835aa698ca23fa56 Reviewed-on: https://go-review.googlesource.com/47092 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
golang · Jun 29, 2017 · dc86c9a · dc86c9a
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diff --git a/api/go1.9.txt b/api/go1.9.txt
@@ -131,11 +131,17 @@ pkg syscall (freebsd-arm-cgo), type Credential struct, NoSetGroups bool
 pkg syscall (freebsd-arm), func Pipe2([]int, int) error
 pkg syscall (freebsd-arm), type Credential struct, NoSetGroups bool
 pkg syscall (linux-386-cgo), type Credential struct, NoSetGroups bool
+pkg syscall (linux-386-cgo), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (linux-386), type Credential struct, NoSetGroups bool
+pkg syscall (linux-386), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (linux-amd64-cgo), type Credential struct, NoSetGroups bool
+pkg syscall (linux-amd64-cgo), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (linux-amd64), type Credential struct, NoSetGroups bool
+pkg syscall (linux-amd64), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (linux-arm-cgo), type Credential struct, NoSetGroups bool
+pkg syscall (linux-arm-cgo), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (linux-arm), type Credential struct, NoSetGroups bool
+pkg syscall (linux-arm), type SysProcAttr struct, AmbientCaps []uintptr
 pkg syscall (netbsd-386-cgo), type Credential struct, NoSetGroups bool
 pkg syscall (netbsd-386), type Credential struct, NoSetGroups bool
 pkg syscall (netbsd-amd64-cgo), type Credential struct, NoSetGroups bool

diff --git a/doc/go1.9.html b/doc/go1.9.html
@@ -784,6 +784,13 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
       to set supplementary groups when starting a new process.
     </p>
 
+    <p><!-- CL 43512 -->
+      The new field
+      <a href="/pkg/syscall/#SysProcAttr.AmbientCaps"><code>SysProcAttr.AmbientCaps</code></a>
+      allows setting ambient capabilities on Linux 4.3+ when creating
+      a new process.
+    </p>
+
     <p><!-- CL 37439 -->
       On 64-bit x86 Linux, process creation latency has been optimized with
       use of <code>CLONE_VFORK</code> and <code>CLONE_VM</code>.