[dev.link] all: merge branch 'master' into dev.linkdev.link

Clean merge.

Change-Id: Ia7b2808bc649790198d34c226a61d9e569084dc5

1 files changed, 74 insertions, 0 deletions

diff --git a/src/runtime/cgo/linux.go b/src/runtime/cgo/linux.go
new file mode 100644
index 0000000000..76c0192c20
--- /dev/null
+++ b/src/runtime/cgo/linux.go
@@ -0,0 +1,74 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Linux system call wrappers that provide POSIX semantics through the
+// corresponding cgo->libc (nptl) wrappers for various system calls.
+
+// +build linux
+
+package cgo
+
+import "unsafe"
+
+// Each of the following entries is needed to ensure that the
+// syscall.syscall_linux code can conditionally call these
+// function pointers:
+//
+//  1. find the C-defined function start
+//  2. force the local byte alias to be mapped to that location
+//  3. map the Go pointer to the function to the syscall package
+
+//go:cgo_import_static _cgo_libc_setegid
+//go:linkname _cgo_libc_setegid _cgo_libc_setegid
+//go:linkname cgo_libc_setegid syscall.cgo_libc_setegid
+var _cgo_libc_setegid byte
+var cgo_libc_setegid = unsafe.Pointer(&_cgo_libc_setegid)
+
+//go:cgo_import_static _cgo_libc_seteuid
+//go:linkname _cgo_libc_seteuid _cgo_libc_seteuid
+//go:linkname cgo_libc_seteuid syscall.cgo_libc_seteuid
+var _cgo_libc_seteuid byte
+var cgo_libc_seteuid = unsafe.Pointer(&_cgo_libc_seteuid)
+
+//go:cgo_import_static _cgo_libc_setregid
+//go:linkname _cgo_libc_setregid _cgo_libc_setregid
+//go:linkname cgo_libc_setregid syscall.cgo_libc_setregid
+var _cgo_libc_setregid byte
+var cgo_libc_setregid = unsafe.Pointer(&_cgo_libc_setregid)
+
+//go:cgo_import_static _cgo_libc_setresgid
+//go:linkname _cgo_libc_setresgid _cgo_libc_setresgid
+//go:linkname cgo_libc_setresgid syscall.cgo_libc_setresgid
+var _cgo_libc_setresgid byte
+var cgo_libc_setresgid = unsafe.Pointer(&_cgo_libc_setresgid)
+
+//go:cgo_import_static _cgo_libc_setresuid
+//go:linkname _cgo_libc_setresuid _cgo_libc_setresuid
+//go:linkname cgo_libc_setresuid syscall.cgo_libc_setresuid
+var _cgo_libc_setresuid byte
+var cgo_libc_setresuid = unsafe.Pointer(&_cgo_libc_setresuid)
+
+//go:cgo_import_static _cgo_libc_setreuid
+//go:linkname _cgo_libc_setreuid _cgo_libc_setreuid
+//go:linkname cgo_libc_setreuid syscall.cgo_libc_setreuid
+var _cgo_libc_setreuid byte
+var cgo_libc_setreuid = unsafe.Pointer(&_cgo_libc_setreuid)
+
+//go:cgo_import_static _cgo_libc_setgroups
+//go:linkname _cgo_libc_setgroups _cgo_libc_setgroups
+//go:linkname cgo_libc_setgroups syscall.cgo_libc_setgroups
+var _cgo_libc_setgroups byte
+var cgo_libc_setgroups = unsafe.Pointer(&_cgo_libc_setgroups)
+
+//go:cgo_import_static _cgo_libc_setgid
+//go:linkname _cgo_libc_setgid _cgo_libc_setgid
+//go:linkname cgo_libc_setgid syscall.cgo_libc_setgid
+var _cgo_libc_setgid byte
+var cgo_libc_setgid = unsafe.Pointer(&_cgo_libc_setgid)
+
+//go:cgo_import_static _cgo_libc_setuid
+//go:linkname _cgo_libc_setuid _cgo_libc_setuid
+//go:linkname cgo_libc_setuid syscall.cgo_libc_setuid
+var _cgo_libc_setuid byte
+var cgo_libc_setuid = unsafe.Pointer(&_cgo_libc_setuid)