37 lines
1.3 KiB
Go
37 lines
1.3 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package syscall contains an interface to the low-level operating system
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// primitives. The details vary depending on the underlying system.
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// Its primary use is inside other packages that provide a more portable
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// interface to the system, such as "os", "time" and "net". Use those
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// packages rather than this one if you can.
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// For details of the functions and data types in this package consult
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// the manuals for the appropriate operating system.
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// These calls return err == nil to indicate success; otherwise
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// err is an operating system error describing the failure.
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// On most systems, that error has type syscall.Errno.
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package syscall
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import "unsafe"
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// StringByteSlice returns a NUL-terminated slice of bytes
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// containing the text of s.
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func StringByteSlice(s string) []byte {
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a := make([]byte, len(s)+1)
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copy(a, s)
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return a
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}
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// StringBytePtr returns a pointer to a NUL-terminated array of bytes
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// containing the text of s.
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func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] }
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// Single-word zero for use when we need a valid pointer to 0 bytes.
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// See mksyscall.pl.
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var _zero uintptr
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var dummy *byte
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const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))
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