Added vendor lock on depsHEADmaster

1 files changed, 163 insertions, 0 deletions

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
+}