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- // 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.
- // Package syscall contains an interface to the low-level operating system
- // primitives. The details vary depending on the underlying system, and
- // by default, godoc will display the syscall documentation for the current
- // system. If you want godoc to display syscall 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 syscall 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 is an operating system error describing the failure.
- // On most systems, that error has type syscall.Errno.
- //
- // Deprecated: this package is locked down. Callers should use the
- // corresponding package in the golang.org/x/sys repository instead.
- // That is also where updates required by new systems or versions
- // should be applied. See https://golang.org/s/go1.4-syscall for more
- // information.
- //
- package syscall
- import "unsafe"
- //go:generate go run ./mksyscall_windows.go -systemdll -output zsyscall_windows.go syscall_windows.go security_windows.go
- // StringByteSlice converts a string to a NUL-terminated []byte,
- // If s contains a NUL byte this function panics instead of
- // returning an error.
- //
- // Deprecated: Use ByteSliceFromString instead.
- func StringByteSlice(s string) []byte {
- a, err := ByteSliceFromString(s)
- if err != nil {
- panic("syscall: string with NUL passed to StringByteSlice")
- }
- return a
- }
- // 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
- }
- // StringBytePtr returns a pointer to a NUL-terminated array of bytes.
- // If s contains a NUL byte this function panics instead of returning
- // an error.
- //
- // Deprecated: Use BytePtrFromString instead.
- func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] }
- // 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
- var dummy *byte
- const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))
- // Unix returns the time stored in ts as seconds plus nanoseconds.
- func (ts *Timespec) Unix() (sec int64, nsec int64) {
- return int64(ts.Sec), int64(ts.Nsec)
- }
- // Unix returns the time stored in tv as seconds plus nanoseconds.
- func (tv *Timeval) Unix() (sec int64, nsec int64) {
- return int64(tv.Sec), int64(tv.Usec) * 1000
- }
- // Nano returns the time stored in ts as nanoseconds.
- func (ts *Timespec) Nano() int64 {
- return int64(ts.Sec)*1e9 + int64(ts.Nsec)
- }
- // Nano returns the time stored in tv as nanoseconds.
- func (tv *Timeval) Nano() int64 {
- return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
- }
- // Getpagesize and Exit are provided by the runtime.
- func Getpagesize() int
- func Exit(code int)
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