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Diffstat (limited to 'src/pkg/os/file_unix.go')
-rw-r--r--src/pkg/os/file_unix.go208
1 files changed, 0 insertions, 208 deletions
diff --git a/src/pkg/os/file_unix.go b/src/pkg/os/file_unix.go
deleted file mode 100644
index 301c2f473..000000000
--- a/src/pkg/os/file_unix.go
+++ /dev/null
@@ -1,208 +0,0 @@
-// 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 os
-
-import (
- "runtime"
- "syscall"
-)
-
-// File represents an open file descriptor.
-type File struct {
- fd int
- name string
- dirinfo *dirInfo // nil unless directory being read
- nepipe int // number of consecutive EPIPE in Write
-}
-
-// Fd returns the integer Unix file descriptor referencing the open file.
-func (file *File) Fd() int {
- if file == nil {
- return -1
- }
- return file.fd
-}
-
-// NewFile returns a new File with the given file descriptor and name.
-func NewFile(fd int, name string) *File {
- if fd < 0 {
- return nil
- }
- f := &File{fd: fd, name: name}
- runtime.SetFinalizer(f, (*File).Close)
- return f
-}
-
-// Auxiliary information if the File describes a directory
-type dirInfo struct {
- buf []byte // buffer for directory I/O
- nbuf int // length of buf; return value from Getdirentries
- bufp int // location of next record in buf.
-}
-
-// DevNull is the name of the operating system's ``null device.''
-// On Unix-like systems, it is "/dev/null"; on Windows, "NUL".
-const DevNull = "/dev/null"
-
-// OpenFile is the generalized open call; most users will use Open
-// or Create instead. It opens the named file with specified flag
-// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
-// methods on the returned File can be used for I/O.
-// It returns the File and an Error, if any.
-func OpenFile(name string, flag int, perm uint32) (file *File, err Error) {
- r, e := syscall.Open(name, flag|syscall.O_CLOEXEC, perm)
- if e != 0 {
- return nil, &PathError{"open", name, Errno(e)}
- }
-
- // There's a race here with fork/exec, which we are
- // content to live with. See ../syscall/exec.go
- if syscall.O_CLOEXEC == 0 { // O_CLOEXEC not supported
- syscall.CloseOnExec(r)
- }
-
- return NewFile(r, name), nil
-}
-
-// Close closes the File, rendering it unusable for I/O.
-// It returns an Error, if any.
-func (file *File) Close() Error {
- if file == nil || file.fd < 0 {
- return EINVAL
- }
- var err Error
- if e := syscall.Close(file.fd); e != 0 {
- err = &PathError{"close", file.name, Errno(e)}
- }
- file.fd = -1 // so it can't be closed again
-
- // no need for a finalizer anymore
- runtime.SetFinalizer(file, nil)
- return err
-}
-
-// Stat returns the FileInfo structure describing file.
-// It returns the FileInfo and an error, if any.
-func (file *File) Stat() (fi *FileInfo, err Error) {
- var stat syscall.Stat_t
- e := syscall.Fstat(file.fd, &stat)
- if e != 0 {
- return nil, &PathError{"stat", file.name, Errno(e)}
- }
- return fileInfoFromStat(file.name, new(FileInfo), &stat, &stat), nil
-}
-
-// Readdir reads the contents of the directory associated with file and
-// returns an array of up to n FileInfo structures, as would be returned
-// by Lstat, in directory order. Subsequent calls on the same file will yield
-// further FileInfos.
-//
-// If n > 0, Readdir returns at most n FileInfo structures. In this case, if
-// Readdir returns an empty slice, it will return a non-nil error
-// explaining why. At the end of a directory, the error is os.EOF.
-//
-// If n <= 0, Readdir returns all the FileInfo from the directory in
-// a single slice. In this case, if Readdir succeeds (reads all
-// the way to the end of the directory), it returns the slice and a
-// nil os.Error. If it encounters an error before the end of the
-// directory, Readdir returns the FileInfo read until that point
-// and a non-nil error.
-func (file *File) Readdir(n int) (fi []FileInfo, err Error) {
- dirname := file.name
- if dirname == "" {
- dirname = "."
- }
- dirname += "/"
- names, err := file.Readdirnames(n)
- fi = make([]FileInfo, len(names))
- for i, filename := range names {
- fip, err := Lstat(dirname + filename)
- if fip == nil || err != nil {
- fi[i].Name = filename // rest is already zeroed out
- } else {
- fi[i] = *fip
- }
- }
- return
-}
-
-// read reads up to len(b) bytes from the File.
-// It returns the number of bytes read and an error, if any.
-func (f *File) read(b []byte) (n int, err int) {
- return syscall.Read(f.fd, b)
-}
-
-// pread reads len(b) bytes from the File starting at byte offset off.
-// It returns the number of bytes read and the error, if any.
-// EOF is signaled by a zero count with err set to 0.
-func (f *File) pread(b []byte, off int64) (n int, err int) {
- return syscall.Pread(f.fd, b, off)
-}
-
-// write writes len(b) bytes to the File.
-// It returns the number of bytes written and an error, if any.
-func (f *File) write(b []byte) (n int, err int) {
- return syscall.Write(f.fd, b)
-}
-
-// pwrite writes len(b) bytes to the File starting at byte offset off.
-// It returns the number of bytes written and an error, if any.
-func (f *File) pwrite(b []byte, off int64) (n int, err int) {
- return syscall.Pwrite(f.fd, b, off)
-}
-
-// seek sets the offset for the next Read or Write on file to offset, interpreted
-// according to whence: 0 means relative to the origin of the file, 1 means
-// relative to the current offset, and 2 means relative to the end.
-// It returns the new offset and an error, if any.
-func (f *File) seek(offset int64, whence int) (ret int64, err int) {
- return syscall.Seek(f.fd, offset, whence)
-}
-
-// Truncate changes the size of the named file.
-// If the file is a symbolic link, it changes the size of the link's target.
-func Truncate(name string, size int64) Error {
- if e := syscall.Truncate(name, size); e != 0 {
- return &PathError{"truncate", name, Errno(e)}
- }
- return nil
-}
-
-// basename removes trailing slashes and the leading directory name from path name
-func basename(name string) string {
- i := len(name) - 1
- // Remove trailing slashes
- for ; i > 0 && name[i] == '/'; i-- {
- name = name[:i]
- }
- // Remove leading directory name
- for i--; i >= 0; i-- {
- if name[i] == '/' {
- name = name[i+1:]
- break
- }
- }
-
- return name
-}
-
-// Pipe returns a connected pair of Files; reads from r return bytes written to w.
-// It returns the files and an Error, if any.
-func Pipe() (r *File, w *File, err Error) {
- var p [2]int
-
- // See ../syscall/exec.go for description of lock.
- syscall.ForkLock.RLock()
- e := syscall.Pipe(p[0:])
- if iserror(e) {
- syscall.ForkLock.RUnlock()
- return nil, nil, NewSyscallError("pipe", e)
- }
- syscall.CloseOnExec(p[0])
- syscall.CloseOnExec(p[1])
- syscall.ForkLock.RUnlock()
-
- return NewFile(p[0], "|0"), NewFile(p[1], "|1"), nil
-}