| // 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) |