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Diffstat (limited to 'gcc-4.8.1/libgo/go/syscall/dir_plan9.go')
-rw-r--r--gcc-4.8.1/libgo/go/syscall/dir_plan9.go205
1 files changed, 0 insertions, 205 deletions
diff --git a/gcc-4.8.1/libgo/go/syscall/dir_plan9.go b/gcc-4.8.1/libgo/go/syscall/dir_plan9.go
deleted file mode 100644
index eee8be44a..000000000
--- a/gcc-4.8.1/libgo/go/syscall/dir_plan9.go
+++ /dev/null
@@ -1,205 +0,0 @@
-// Copyright 2012 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.
-
-// Plan 9 directory marshalling. See intro(5).
-
-package syscall
-
-import "errors"
-
-var (
- ErrShortStat = errors.New("stat buffer too short")
- ErrBadStat = errors.New("malformed stat buffer")
-)
-
-// A Qid represents a 9P server's unique identification for a file.
-type Qid struct {
- Path uint64 // the file server's unique identification for the file
- Vers uint32 // version number for given Path
- Type uint8 // the type of the file (syscall.QTDIR for example)
-}
-
-// A Dir contains the metadata for a file.
-type Dir struct {
- // system-modified data
- Type uint16 // server type
- Dev uint32 // server subtype
-
- // file data
- Qid Qid // unique id from server
- Mode uint32 // permissions
- Atime uint32 // last read time
- Mtime uint32 // last write time
- Length int64 // file length
- Name string // last element of path
- Uid string // owner name
- Gid string // group name
- Muid string // last modifier name
-}
-
-var nullDir = Dir{
- Type: ^uint16(0),
- Dev: ^uint32(0),
- Qid: Qid{
- Path: ^uint64(0),
- Vers: ^uint32(0),
- Type: ^uint8(0),
- },
- Mode: ^uint32(0),
- Atime: ^uint32(0),
- Mtime: ^uint32(0),
- Length: ^int64(0),
-}
-
-// Null assigns special "don't touch" values to members of d to
-// avoid modifiying them during syscall.Wstat.
-func (d *Dir) Null() { *d = nullDir }
-
-// Marshal encodes a 9P stat message corresponding to d into b
-//
-// If there isn't enough space in b for a stat message, ErrShortStat is returned.
-func (d *Dir) Marshal(b []byte) (n int, err error) {
- n = STATFIXLEN + len(d.Name) + len(d.Uid) + len(d.Gid) + len(d.Muid)
- if n > len(b) {
- return n, ErrShortStat
- }
-
- b = pbit16(b, uint16(n)-2)
- b = pbit16(b, d.Type)
- b = pbit32(b, d.Dev)
- b = pbit64(b, d.Qid.Path)
- b = pbit32(b, d.Qid.Vers)
- b = pbit8(b, d.Qid.Type)
- b = pbit32(b, d.Mode)
- b = pbit32(b, d.Atime)
- b = pbit32(b, d.Mtime)
- b = pbit64(b, uint64(d.Length))
- b = pstring(b, d.Name)
- b = pstring(b, d.Uid)
- b = pstring(b, d.Gid)
- b = pstring(b, d.Muid)
-
- return n, nil
-}
-
-// UnmarshalDir decodes a single 9P stat message from b and returns the resulting Dir.
-//
-// If b is too small to hold a valid stat message, ErrShortStat is returned.
-//
-// If the stat message itself is invalid, ErrBadStat is returned.
-func UnmarshalDir(b []byte) (*Dir, error) {
- if len(b) < STATFIXLEN {
- return nil, ErrShortStat
- }
- size, buf := gbit16(b)
- if len(b) != int(size)+2 {
- return nil, ErrBadStat
- }
- b = buf
-
- var d Dir
- d.Type, b = gbit16(b)
- d.Dev, b = gbit32(b)
- d.Qid.Path, b = gbit64(b)
- d.Qid.Vers, b = gbit32(b)
- d.Qid.Type, b = gbit8(b)
- d.Mode, b = gbit32(b)
- d.Atime, b = gbit32(b)
- d.Mtime, b = gbit32(b)
-
- n, b := gbit64(b)
- d.Length = int64(n)
-
- var ok bool
- if d.Name, b, ok = gstring(b); !ok {
- return nil, ErrBadStat
- }
- if d.Uid, b, ok = gstring(b); !ok {
- return nil, ErrBadStat
- }
- if d.Gid, b, ok = gstring(b); !ok {
- return nil, ErrBadStat
- }
- if d.Muid, b, ok = gstring(b); !ok {
- return nil, ErrBadStat
- }
-
- return &d, nil
-}
-
-// pbit8 copies the 8-bit number v to b and returns the remaining slice of b.
-func pbit8(b []byte, v uint8) []byte {
- b[0] = byte(v)
- return b[1:]
-}
-
-// pbit16 copies the 16-bit number v to b in little-endian order and returns the remaining slice of b.
-func pbit16(b []byte, v uint16) []byte {
- b[0] = byte(v)
- b[1] = byte(v >> 8)
- return b[2:]
-}
-
-// pbit32 copies the 32-bit number v to b in little-endian order and returns the remaining slice of b.
-func pbit32(b []byte, v uint32) []byte {
- b[0] = byte(v)
- b[1] = byte(v >> 8)
- b[2] = byte(v >> 16)
- b[3] = byte(v >> 24)
- return b[4:]
-}
-
-// pbit64 copies the 64-bit number v to b in little-endian order and returns the remaining slice of b.
-func pbit64(b []byte, v uint64) []byte {
- b[0] = byte(v)
- b[1] = byte(v >> 8)
- b[2] = byte(v >> 16)
- b[3] = byte(v >> 24)
- b[4] = byte(v >> 32)
- b[5] = byte(v >> 40)
- b[6] = byte(v >> 48)
- b[7] = byte(v >> 56)
- return b[8:]
-}
-
-// pstring copies the string s to b, prepending it with a 16-bit length in little-endian order, and
-// returning the remaining slice of b..
-func pstring(b []byte, s string) []byte {
- b = pbit16(b, uint16(len(s)))
- n := copy(b, s)
- return b[n:]
-}
-
-// gbit8 reads an 8-bit number from b and returns it with the remaining slice of b.
-func gbit8(b []byte) (uint8, []byte) {
- return uint8(b[0]), b[1:]
-}
-
-// gbit16 reads a 16-bit number in little-endian order from b and returns it with the remaining slice of b.
-func gbit16(b []byte) (uint16, []byte) {
- return uint16(b[0]) | uint16(b[1])<<8, b[2:]
-}
-
-// gbit32 reads a 32-bit number in little-endian order from b and returns it with the remaining slice of b.
-func gbit32(b []byte) (uint32, []byte) {
- return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24, b[4:]
-}
-
-// gbit64 reads a 64-bit number in little-endian order from b and returns it with the remaining slice of b.
-func gbit64(b []byte) (uint64, []byte) {
- lo := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
- hi := uint32(b[4]) | uint32(b[5])<<8 | uint32(b[6])<<16 | uint32(b[7])<<24
- return uint64(lo) | uint64(hi)<<32, b[8:]
-}
-
-// gstring reads a string from b, prefixed with a 16-bit length in little-endian order.
-// It returns the string with the remaining slice of b and a boolean. If the length is
-// greater than the number of bytes in b, the boolean will be false.
-func gstring(b []byte) (string, []byte, bool) {
- n, b := gbit16(b)
- if int(n) > len(b) {
- return "", b, false
- }
- return string(b[:n]), b[n:], true
-}