initial add - go fmt on grpc
Change-Id: Ib0afadd2fe5571d1456a091f94f5644458f7d3f4
diff --git a/vendor/golang.org/x/sys/unix/pledge_openbsd.go b/vendor/golang.org/x/sys/unix/pledge_openbsd.go
new file mode 100644
index 0000000..eb48294
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/pledge_openbsd.go
@@ -0,0 +1,163 @@
+// Copyright 2016 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.
+
+package unix
+
+import (
+ "errors"
+ "fmt"
+ "strconv"
+ "syscall"
+ "unsafe"
+)
+
+// Pledge implements the pledge syscall.
+//
+// The pledge syscall does not accept execpromises on OpenBSD releases
+// before 6.3.
+//
+// execpromises must be empty when Pledge is called on OpenBSD
+// releases predating 6.3, otherwise an error will be returned.
+//
+// For more information see pledge(2).
+func Pledge(promises, execpromises string) error {
+ maj, min, err := majmin()
+ if err != nil {
+ return err
+ }
+
+ err = pledgeAvailable(maj, min, execpromises)
+ if err != nil {
+ return err
+ }
+
+ pptr, err := syscall.BytePtrFromString(promises)
+ if err != nil {
+ return err
+ }
+
+ // This variable will hold either a nil unsafe.Pointer or
+ // an unsafe.Pointer to a string (execpromises).
+ var expr unsafe.Pointer
+
+ // If we're running on OpenBSD > 6.2, pass execpromises to the syscall.
+ if maj > 6 || (maj == 6 && min > 2) {
+ exptr, err := syscall.BytePtrFromString(execpromises)
+ if err != nil {
+ return err
+ }
+ expr = unsafe.Pointer(exptr)
+ }
+
+ _, _, e := syscall.Syscall(SYS_PLEDGE, uintptr(unsafe.Pointer(pptr)), uintptr(expr), 0)
+ if e != 0 {
+ return e
+ }
+
+ return nil
+}
+
+// PledgePromises implements the pledge syscall.
+//
+// This changes the promises and leaves the execpromises untouched.
+//
+// For more information see pledge(2).
+func PledgePromises(promises string) error {
+ maj, min, err := majmin()
+ if err != nil {
+ return err
+ }
+
+ err = pledgeAvailable(maj, min, "")
+ if err != nil {
+ return err
+ }
+
+ // This variable holds the execpromises and is always nil.
+ var expr unsafe.Pointer
+
+ pptr, err := syscall.BytePtrFromString(promises)
+ if err != nil {
+ return err
+ }
+
+ _, _, e := syscall.Syscall(SYS_PLEDGE, uintptr(unsafe.Pointer(pptr)), uintptr(expr), 0)
+ if e != 0 {
+ return e
+ }
+
+ return nil
+}
+
+// PledgeExecpromises implements the pledge syscall.
+//
+// This changes the execpromises and leaves the promises untouched.
+//
+// For more information see pledge(2).
+func PledgeExecpromises(execpromises string) error {
+ maj, min, err := majmin()
+ if err != nil {
+ return err
+ }
+
+ err = pledgeAvailable(maj, min, execpromises)
+ if err != nil {
+ return err
+ }
+
+ // This variable holds the promises and is always nil.
+ var pptr unsafe.Pointer
+
+ exptr, err := syscall.BytePtrFromString(execpromises)
+ if err != nil {
+ return err
+ }
+
+ _, _, e := syscall.Syscall(SYS_PLEDGE, uintptr(pptr), uintptr(unsafe.Pointer(exptr)), 0)
+ if e != 0 {
+ return e
+ }
+
+ return nil
+}
+
+// majmin returns major and minor version number for an OpenBSD system.
+func majmin() (major int, minor int, err error) {
+ var v Utsname
+ err = Uname(&v)
+ if err != nil {
+ return
+ }
+
+ major, err = strconv.Atoi(string(v.Release[0]))
+ if err != nil {
+ err = errors.New("cannot parse major version number returned by uname")
+ return
+ }
+
+ minor, err = strconv.Atoi(string(v.Release[2]))
+ if err != nil {
+ err = errors.New("cannot parse minor version number returned by uname")
+ return
+ }
+
+ return
+}
+
+// pledgeAvailable checks for availability of the pledge(2) syscall
+// based on the running OpenBSD version.
+func pledgeAvailable(maj, min int, execpromises string) error {
+ // If OpenBSD <= 5.9, pledge is not available.
+ if (maj == 5 && min != 9) || maj < 5 {
+ return fmt.Errorf("pledge syscall is not available on OpenBSD %d.%d", maj, min)
+ }
+
+ // If OpenBSD <= 6.2 and execpromises is not empty,
+ // return an error - execpromises is not available before 6.3
+ if (maj < 6 || (maj == 6 && min <= 2)) && execpromises != "" {
+ return fmt.Errorf("cannot use execpromises on OpenBSD %d.%d", maj, min)
+ }
+
+ return nil
+}