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[bytom/shuttle.git] / vendor / github.com / bytom / vendor / golang.org / x / sys / plan9 / syscall.go

diff --git a/vendor/github.com/bytom/vendor/golang.org/x/sys/plan9/syscall.go b/vendor/github.com/bytom/vendor/golang.org/x/sys/plan9/syscall.go
new file mode 100644 (file)
index 0000000..df6f8c5
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+++ b/vendor/github.com/bytom/vendor/golang.org/x/sys/plan9/syscall.go
@@ -0,0 +1,74 @@
+// Copyright 2009 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.
+
+// +build plan9
+
+// Package plan9 contains an interface to the low-level operating system
+// primitives.  OS details vary depending on the underlying system, and
+// by default, godoc will display the OS-specific documentation for the current
+// system.  If you want godoc to display documentation for another
+// system, set $GOOS and $GOARCH to the desired system.  For example, if
+// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
+// to freebsd and $GOARCH to arm.
+// The primary use of this package is inside other packages that provide a more
+// portable interface to the system, such as "os", "time" and "net".  Use
+// those packages rather than this one if you can.
+// For details of the functions and data types in this package consult
+// the manuals for the appropriate operating system.
+// These calls return err == nil to indicate success; otherwise
+// err represents an operating system error describing the failure and
+// holds a value of type syscall.ErrorString.
+package plan9 // import "golang.org/x/sys/plan9"
+
+import "unsafe"
+
+// ByteSliceFromString returns a NUL-terminated slice of bytes
+// containing the text of s. If s contains a NUL byte at any
+// location, it returns (nil, EINVAL).
+func ByteSliceFromString(s string) ([]byte, error) {
+       for i := 0; i < len(s); i++ {
+               if s[i] == 0 {
+                       return nil, EINVAL
+               }
+       }
+       a := make([]byte, len(s)+1)
+       copy(a, s)
+       return a, nil
+}
+
+// BytePtrFromString returns a pointer to a NUL-terminated array of
+// bytes containing the text of s. If s contains a NUL byte at any
+// location, it returns (nil, EINVAL).
+func BytePtrFromString(s string) (*byte, error) {
+       a, err := ByteSliceFromString(s)
+       if err != nil {
+               return nil, err
+       }
+       return &a[0], nil
+}
+
+// Single-word zero for use when we need a valid pointer to 0 bytes.
+// See mksyscall.pl.
+var _zero uintptr
+
+func (ts *Timespec) Unix() (sec int64, nsec int64) {
+       return int64(ts.Sec), int64(ts.Nsec)
+}
+
+func (tv *Timeval) Unix() (sec int64, nsec int64) {
+       return int64(tv.Sec), int64(tv.Usec) * 1000
+}
+
+func (ts *Timespec) Nano() int64 {
+       return int64(ts.Sec)*1e9 + int64(ts.Nsec)
+}
+
+func (tv *Timeval) Nano() int64 {
+       return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
+}
+
+// use is a no-op, but the compiler cannot see that it is.
+// Calling use(p) ensures that p is kept live until that point.
+//go:noescape
+func use(p unsafe.Pointer)