1 b1b8898e 2017-06-21 progrium package ufs
  2 b1b8898e 2017-06-21 progrium 
  3 b1b8898e 2017-06-21 progrium import (
  4 b1b8898e 2017-06-21 progrium 	"context"
  5 b1b8898e 2017-06-21 progrium 	"io"
  6 b1b8898e 2017-06-21 progrium 	"io/ioutil"
  7 b1b8898e 2017-06-21 progrium 	"os"
  8 b1b8898e 2017-06-21 progrium 	"os/user"
  9 b1b8898e 2017-06-21 progrium 	"path/filepath"
 10 b1b8898e 2017-06-21 progrium 	"strconv"
 11 b1b8898e 2017-06-21 progrium 	"sync"
 12 b1b8898e 2017-06-21 progrium 	"syscall"
 13 b1b8898e 2017-06-21 progrium 
 14 b1b8898e 2017-06-21 progrium 	"github.com/docker/go-p9p"
 15 b1b8898e 2017-06-21 progrium )
 16 b1b8898e 2017-06-21 progrium 
 17 b1b8898e 2017-06-21 progrium type session struct {
 18 b1b8898e 2017-06-21 progrium 	sync.Mutex
 19 b1b8898e 2017-06-21 progrium 	rootRef *FileRef
 20 b1b8898e 2017-06-21 progrium 	refs    map[p9p.Fid]*FileRef
 21 b1b8898e 2017-06-21 progrium }
 22 b1b8898e 2017-06-21 progrium 
 23 b1b8898e 2017-06-21 progrium func NewSession(ctx context.Context, root string) (p9p.Session, error) {
 24 b1b8898e 2017-06-21 progrium 	return &session{
 25 b1b8898e 2017-06-21 progrium 		rootRef: &FileRef{Path: root},
 26 b1b8898e 2017-06-21 progrium 		refs:    make(map[p9p.Fid]*FileRef),
 27 b1b8898e 2017-06-21 progrium 	}, nil
 28 b1b8898e 2017-06-21 progrium }
 29 b1b8898e 2017-06-21 progrium 
 30 b1b8898e 2017-06-21 progrium func (sess *session) getRef(fid p9p.Fid) (*FileRef, error) {
 31 b1b8898e 2017-06-21 progrium 	sess.Lock()
 32 b1b8898e 2017-06-21 progrium 	defer sess.Unlock()
 33 b1b8898e 2017-06-21 progrium 
 34 b1b8898e 2017-06-21 progrium 	if fid == 0 {
 35 b1b8898e 2017-06-21 progrium 		return nil, p9p.ErrUnknownfid
 36 b1b8898e 2017-06-21 progrium 	}
 37 b1b8898e 2017-06-21 progrium 
 38 b1b8898e 2017-06-21 progrium 	ref, found := sess.refs[fid]
 39 b1b8898e 2017-06-21 progrium 	if !found {
 40 b1b8898e 2017-06-21 progrium 		return nil, p9p.ErrUnknownfid
 41 b1b8898e 2017-06-21 progrium 	}
 42 b1b8898e 2017-06-21 progrium 
 43 b1b8898e 2017-06-21 progrium 	if err := ref.Stat(); err != nil {
 44 b1b8898e 2017-06-21 progrium 		return nil, err
 45 b1b8898e 2017-06-21 progrium 	}
 46 b1b8898e 2017-06-21 progrium 
 47 b1b8898e 2017-06-21 progrium 	return ref, nil
 48 b1b8898e 2017-06-21 progrium }
 49 b1b8898e 2017-06-21 progrium 
 50 b1b8898e 2017-06-21 progrium func (sess *session) newRef(fid p9p.Fid, path string) (*FileRef, error) {
 51 b1b8898e 2017-06-21 progrium 	sess.Lock()
 52 b1b8898e 2017-06-21 progrium 	defer sess.Unlock()
 53 b1b8898e 2017-06-21 progrium 
 54 b1b8898e 2017-06-21 progrium 	if fid == 0 {
 55 b1b8898e 2017-06-21 progrium 		return nil, p9p.ErrUnknownfid
 56 b1b8898e 2017-06-21 progrium 	}
 57 b1b8898e 2017-06-21 progrium 
 58 b1b8898e 2017-06-21 progrium 	_, found := sess.refs[fid]
 59 b1b8898e 2017-06-21 progrium 	if found {
 60 b1b8898e 2017-06-21 progrium 		return nil, p9p.ErrDupfid
 61 b1b8898e 2017-06-21 progrium 	}
 62 b1b8898e 2017-06-21 progrium 
 63 b1b8898e 2017-06-21 progrium 	ref := &FileRef{Path: path}
 64 b1b8898e 2017-06-21 progrium 	if err := ref.Stat(); err != nil {
 65 b1b8898e 2017-06-21 progrium 		return nil, err
 66 b1b8898e 2017-06-21 progrium 	}
 67 b1b8898e 2017-06-21 progrium 
 68 b1b8898e 2017-06-21 progrium 	sess.refs[fid] = ref
 69 b1b8898e 2017-06-21 progrium 	return ref, nil
 70 b1b8898e 2017-06-21 progrium }
 71 b1b8898e 2017-06-21 progrium 
 72 b1b8898e 2017-06-21 progrium func (sess *session) Auth(ctx context.Context, afid p9p.Fid, uname, aname string) (p9p.Qid, error) {
 73 b1b8898e 2017-06-21 progrium 	// TODO: AuthInit?
 74 b1b8898e 2017-06-21 progrium 	return p9p.Qid{}, nil //p9p.MessageRerror{Ename: "no auth"}
 75 b1b8898e 2017-06-21 progrium }
 76 b1b8898e 2017-06-21 progrium 
 77 b1b8898e 2017-06-21 progrium func (sess *session) Attach(ctx context.Context, fid, afid p9p.Fid, uname, aname string) (p9p.Qid, error) {
 78 b1b8898e 2017-06-21 progrium 	if uname == "" {
 79 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, p9p.MessageRerror{Ename: "no user"}
 80 b1b8898e 2017-06-21 progrium 	}
 81 b1b8898e 2017-06-21 progrium 
 82 b1b8898e 2017-06-21 progrium 	// TODO: AuthCheck?
 83 b1b8898e 2017-06-21 progrium 
 84 b1b8898e 2017-06-21 progrium 	// if afid > 0 {
 85 b1b8898e 2017-06-21 progrium 	// 	return p9p.Qid{}, p9p.MessageRerror{Ename: "attach: no auth"}
 86 b1b8898e 2017-06-21 progrium 	// }
 87 b1b8898e 2017-06-21 progrium 
 88 b1b8898e 2017-06-21 progrium 	if aname == "" {
 89 b1b8898e 2017-06-21 progrium 		aname = sess.rootRef.Path
 90 b1b8898e 2017-06-21 progrium 	}
 91 b1b8898e 2017-06-21 progrium 
 92 b1b8898e 2017-06-21 progrium 	ref, err := sess.newRef(fid, aname)
 93 b1b8898e 2017-06-21 progrium 	if err != nil {
 94 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, err
 95 b1b8898e 2017-06-21 progrium 	}
 96 b1b8898e 2017-06-21 progrium 
 97 b1b8898e 2017-06-21 progrium 	return ref.Info.Qid, nil
 98 b1b8898e 2017-06-21 progrium }
 99 b1b8898e 2017-06-21 progrium 
100 b1b8898e 2017-06-21 progrium func (sess *session) Clunk(ctx context.Context, fid p9p.Fid) error {
101 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
102 b1b8898e 2017-06-21 progrium 	if err != nil {
103 b1b8898e 2017-06-21 progrium 		return err
104 b1b8898e 2017-06-21 progrium 	}
105 b1b8898e 2017-06-21 progrium 
106 b1b8898e 2017-06-21 progrium 	ref.Lock()
107 b1b8898e 2017-06-21 progrium 	defer ref.Unlock()
108 b1b8898e 2017-06-21 progrium 	if ref.File != nil {
109 b1b8898e 2017-06-21 progrium 		ref.File.Close()
110 b1b8898e 2017-06-21 progrium 	}
111 b1b8898e 2017-06-21 progrium 
112 b1b8898e 2017-06-21 progrium 	sess.Lock()
113 b1b8898e 2017-06-21 progrium 	defer sess.Unlock()
114 b1b8898e 2017-06-21 progrium 	delete(sess.refs, fid)
115 b1b8898e 2017-06-21 progrium 
116 b1b8898e 2017-06-21 progrium 	return nil
117 b1b8898e 2017-06-21 progrium }
118 b1b8898e 2017-06-21 progrium 
119 b1b8898e 2017-06-21 progrium func (sess *session) Remove(ctx context.Context, fid p9p.Fid) error {
120 b1b8898e 2017-06-21 progrium 	defer sess.Clunk(ctx, fid)
121 b1b8898e 2017-06-21 progrium 
122 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
123 b1b8898e 2017-06-21 progrium 	if err != nil {
124 b1b8898e 2017-06-21 progrium 		return err
125 b1b8898e 2017-06-21 progrium 	}
126 b1b8898e 2017-06-21 progrium 
127 b1b8898e 2017-06-21 progrium 	// TODO: check write perms on parent
128 b1b8898e 2017-06-21 progrium 
129 b1b8898e 2017-06-21 progrium 	return os.Remove(ref.Path)
130 b1b8898e 2017-06-21 progrium }
131 b1b8898e 2017-06-21 progrium 
132 b1b8898e 2017-06-21 progrium func (sess *session) Walk(ctx context.Context, fid p9p.Fid, newfid p9p.Fid, names ...string) ([]p9p.Qid, error) {
133 b1b8898e 2017-06-21 progrium 	var qids []p9p.Qid
134 b1b8898e 2017-06-21 progrium 
135 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
136 b1b8898e 2017-06-21 progrium 	if err != nil {
137 b1b8898e 2017-06-21 progrium 		return qids, err
138 b1b8898e 2017-06-21 progrium 	}
139 b1b8898e 2017-06-21 progrium 
140 b1b8898e 2017-06-21 progrium 	newref, err := sess.newRef(newfid, ref.Path)
141 b1b8898e 2017-06-21 progrium 	if err != nil {
142 b1b8898e 2017-06-21 progrium 		return qids, err
143 b1b8898e 2017-06-21 progrium 	}
144 b1b8898e 2017-06-21 progrium 
145 b1b8898e 2017-06-21 progrium 	path := newref.Path
146 b1b8898e 2017-06-21 progrium 	for _, name := range names {
147 b1b8898e 2017-06-21 progrium 		newpath := filepath.Join(path, name)
148 b1b8898e 2017-06-21 progrium 		r := &FileRef{Path: newpath}
149 b1b8898e 2017-06-21 progrium 		if err := r.Stat(); err != nil {
150 b1b8898e 2017-06-21 progrium 			break
151 b1b8898e 2017-06-21 progrium 		}
152 b1b8898e 2017-06-21 progrium 		qids = append(qids, r.Info.Qid)
153 b1b8898e 2017-06-21 progrium 		path = newpath
154 b1b8898e 2017-06-21 progrium 	}
155 b1b8898e 2017-06-21 progrium 
156 b1b8898e 2017-06-21 progrium 	newref.Path = path
157 b1b8898e 2017-06-21 progrium 	return qids, nil
158 b1b8898e 2017-06-21 progrium }
159 b1b8898e 2017-06-21 progrium 
160 b1b8898e 2017-06-21 progrium func (sess *session) Read(ctx context.Context, fid p9p.Fid, p []byte, offset int64) (n int, err error) {
161 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
162 b1b8898e 2017-06-21 progrium 	if err != nil {
163 b1b8898e 2017-06-21 progrium 		return 0, err
164 b1b8898e 2017-06-21 progrium 	}
165 b1b8898e 2017-06-21 progrium 
166 b1b8898e 2017-06-21 progrium 	ref.Lock()
167 b1b8898e 2017-06-21 progrium 	defer ref.Unlock()
168 b1b8898e 2017-06-21 progrium 
169 b1b8898e 2017-06-21 progrium 	if ref.IsDir() {
170 b1b8898e 2017-06-21 progrium 		if offset == 0 && ref.Readdir == nil {
171 b1b8898e 2017-06-21 progrium 			files, err := ioutil.ReadDir(ref.Path)
172 b1b8898e 2017-06-21 progrium 			if err != nil {
173 b1b8898e 2017-06-21 progrium 				return 0, err
174 b1b8898e 2017-06-21 progrium 			}
175 b1b8898e 2017-06-21 progrium 			var dirs []p9p.Dir
176 b1b8898e 2017-06-21 progrium 			for _, info := range files {
177 b1b8898e 2017-06-21 progrium 				dirs = append(dirs, dirFromInfo(info))
178 b1b8898e 2017-06-21 progrium 			}
179 b1b8898e 2017-06-21 progrium 			ref.Readdir = p9p.NewFixedReaddir(p9p.NewCodec(), dirs)
180 b1b8898e 2017-06-21 progrium 		}
181 b1b8898e 2017-06-21 progrium 		if ref.Readdir == nil {
182 b1b8898e 2017-06-21 progrium 			return 0, p9p.ErrBadoffset
183 b1b8898e 2017-06-21 progrium 		}
184 b1b8898e 2017-06-21 progrium 		return ref.Readdir.Read(ctx, p, offset)
185 b1b8898e 2017-06-21 progrium 	}
186 b1b8898e 2017-06-21 progrium 
187 b1b8898e 2017-06-21 progrium 	if ref.File == nil {
188 b1b8898e 2017-06-21 progrium 		return 0, p9p.MessageRerror{Ename: "no file open"} //p9p.ErrClosed
189 b1b8898e 2017-06-21 progrium 	}
190 b1b8898e 2017-06-21 progrium 
191 b1b8898e 2017-06-21 progrium 	n, err = ref.File.ReadAt(p, offset)
192 b1b8898e 2017-06-21 progrium 	if err != nil && err != io.EOF {
193 b1b8898e 2017-06-21 progrium 		return n, err
194 b1b8898e 2017-06-21 progrium 	}
195 b1b8898e 2017-06-21 progrium 	return n, nil
196 b1b8898e 2017-06-21 progrium }
197 b1b8898e 2017-06-21 progrium 
198 b1b8898e 2017-06-21 progrium func (sess *session) Write(ctx context.Context, fid p9p.Fid, p []byte, offset int64) (n int, err error) {
199 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
200 b1b8898e 2017-06-21 progrium 	if err != nil {
201 b1b8898e 2017-06-21 progrium 		return 0, err
202 b1b8898e 2017-06-21 progrium 	}
203 b1b8898e 2017-06-21 progrium 
204 b1b8898e 2017-06-21 progrium 	ref.Lock()
205 b1b8898e 2017-06-21 progrium 	defer ref.Unlock()
206 b1b8898e 2017-06-21 progrium 	if ref.File == nil {
207 b1b8898e 2017-06-21 progrium 		return 0, p9p.ErrClosed
208 b1b8898e 2017-06-21 progrium 	}
209 b1b8898e 2017-06-21 progrium 
210 b1b8898e 2017-06-21 progrium 	return ref.File.WriteAt(p, offset)
211 b1b8898e 2017-06-21 progrium }
212 b1b8898e 2017-06-21 progrium 
213 b1b8898e 2017-06-21 progrium func (sess *session) Open(ctx context.Context, fid p9p.Fid, mode p9p.Flag) (p9p.Qid, uint32, error) {
214 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
215 b1b8898e 2017-06-21 progrium 	if err != nil {
216 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, 0, err
217 b1b8898e 2017-06-21 progrium 	}
218 b1b8898e 2017-06-21 progrium 
219 b1b8898e 2017-06-21 progrium 	ref.Lock()
220 b1b8898e 2017-06-21 progrium 	defer ref.Unlock()
221 b1b8898e 2017-06-21 progrium 	f, err := os.OpenFile(ref.Path, oflags(mode), 0)
222 b1b8898e 2017-06-21 progrium 	if err != nil {
223 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, 0, err
224 b1b8898e 2017-06-21 progrium 	}
225 b1b8898e 2017-06-21 progrium 	ref.File = f
226 b1b8898e 2017-06-21 progrium 	return ref.Info.Qid, 0, nil
227 b1b8898e 2017-06-21 progrium }
228 b1b8898e 2017-06-21 progrium 
229 b1b8898e 2017-06-21 progrium func (sess *session) Create(ctx context.Context, parent p9p.Fid, name string, perm uint32, mode p9p.Flag) (p9p.Qid, uint32, error) {
230 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(parent)
231 b1b8898e 2017-06-21 progrium 	if err != nil {
232 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, 0, err
233 b1b8898e 2017-06-21 progrium 	}
234 b1b8898e 2017-06-21 progrium 
235 b1b8898e 2017-06-21 progrium 	newpath := filepath.Join(ref.Path, name)
236 b1b8898e 2017-06-21 progrium 
237 b1b8898e 2017-06-21 progrium 	var file *os.File
238 b1b8898e 2017-06-21 progrium 	switch {
239 b1b8898e 2017-06-21 progrium 	case perm&p9p.DMDIR != 0:
240 b1b8898e 2017-06-21 progrium 		err = os.Mkdir(newpath, os.FileMode(perm&0777))
241 b1b8898e 2017-06-21 progrium 
242 b1b8898e 2017-06-21 progrium 	case perm&p9p.DMSYMLINK != 0:
243 b1b8898e 2017-06-21 progrium 	case perm&p9p.DMNAMEDPIPE != 0:
244 b1b8898e 2017-06-21 progrium 	case perm&p9p.DMDEVICE != 0:
245 b1b8898e 2017-06-21 progrium 		err = p9p.MessageRerror{Ename: "not implemented"}
246 b1b8898e 2017-06-21 progrium 
247 b1b8898e 2017-06-21 progrium 	default:
248 b1b8898e 2017-06-21 progrium 		file, err = os.OpenFile(newpath, oflags(mode)|os.O_CREATE, os.FileMode(perm&0777))
249 b1b8898e 2017-06-21 progrium 	}
250 b1b8898e 2017-06-21 progrium 
251 b1b8898e 2017-06-21 progrium 	if file == nil && err == nil {
252 b1b8898e 2017-06-21 progrium 		file, err = os.OpenFile(newpath, oflags(mode), 0)
253 b1b8898e 2017-06-21 progrium 	}
254 b1b8898e 2017-06-21 progrium 
255 b1b8898e 2017-06-21 progrium 	if err != nil {
256 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, 0, err
257 b1b8898e 2017-06-21 progrium 	}
258 b1b8898e 2017-06-21 progrium 
259 b1b8898e 2017-06-21 progrium 	ref.Lock()
260 b1b8898e 2017-06-21 progrium 	defer ref.Unlock()
261 b1b8898e 2017-06-21 progrium 	ref.Path = newpath
262 b1b8898e 2017-06-21 progrium 	ref.File = file
263 b1b8898e 2017-06-21 progrium 	if err := ref.Stat(); err != nil {
264 b1b8898e 2017-06-21 progrium 		return p9p.Qid{}, 0, err
265 b1b8898e 2017-06-21 progrium 	}
266 b1b8898e 2017-06-21 progrium 	return ref.Info.Qid, 0, err
267 b1b8898e 2017-06-21 progrium }
268 b1b8898e 2017-06-21 progrium 
269 b1b8898e 2017-06-21 progrium func (sess *session) Stat(ctx context.Context, fid p9p.Fid) (p9p.Dir, error) {
270 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
271 b1b8898e 2017-06-21 progrium 	if err != nil {
272 b1b8898e 2017-06-21 progrium 		return p9p.Dir{}, err
273 b1b8898e 2017-06-21 progrium 	}
274 b1b8898e 2017-06-21 progrium 	return ref.Info, nil
275 b1b8898e 2017-06-21 progrium }
276 b1b8898e 2017-06-21 progrium 
277 b1b8898e 2017-06-21 progrium func (sess *session) WStat(ctx context.Context, fid p9p.Fid, dir p9p.Dir) error {
278 b1b8898e 2017-06-21 progrium 	ref, err := sess.getRef(fid)
279 b1b8898e 2017-06-21 progrium 	if err != nil {
280 b1b8898e 2017-06-21 progrium 		return err
281 b1b8898e 2017-06-21 progrium 	}
282 b1b8898e 2017-06-21 progrium 
283 b1b8898e 2017-06-21 progrium 	if dir.Mode != ^uint32(0) {
284 b1b8898e 2017-06-21 progrium 		// TODO: 9P2000.u: DMSETUID DMSETGID
285 b1b8898e 2017-06-21 progrium 		err := os.Chmod(ref.Path, os.FileMode(dir.Mode&0777))
286 b1b8898e 2017-06-21 progrium 		if err != nil {
287 b1b8898e 2017-06-21 progrium 			return err
288 b1b8898e 2017-06-21 progrium 		}
289 b1b8898e 2017-06-21 progrium 	}
290 b1b8898e 2017-06-21 progrium 
291 b1b8898e 2017-06-21 progrium 	if dir.UID != "" || dir.GID != "" {
292 b1b8898e 2017-06-21 progrium 		usr, err := user.Lookup(dir.UID)
293 b1b8898e 2017-06-21 progrium 		if err != nil {
294 b1b8898e 2017-06-21 progrium 			return err
295 b1b8898e 2017-06-21 progrium 		}
296 b1b8898e 2017-06-21 progrium 		uid, err := strconv.Atoi(usr.Uid)
297 b1b8898e 2017-06-21 progrium 		if err != nil {
298 b1b8898e 2017-06-21 progrium 			return err
299 b1b8898e 2017-06-21 progrium 		}
300 b1b8898e 2017-06-21 progrium 		grp, err := user.LookupGroup(dir.GID)
301 b1b8898e 2017-06-21 progrium 		if err != nil {
302 b1b8898e 2017-06-21 progrium 			return err
303 b1b8898e 2017-06-21 progrium 		}
304 b1b8898e 2017-06-21 progrium 		gid, err := strconv.Atoi(grp.Gid)
305 b1b8898e 2017-06-21 progrium 		if err != nil {
306 b1b8898e 2017-06-21 progrium 			return err
307 b1b8898e 2017-06-21 progrium 		}
308 b1b8898e 2017-06-21 progrium 		if err := os.Chown(ref.Path, uid, gid); err != nil {
309 b1b8898e 2017-06-21 progrium 			return err
310 b1b8898e 2017-06-21 progrium 		}
311 b1b8898e 2017-06-21 progrium 	}
312 b1b8898e 2017-06-21 progrium 
313 b1b8898e 2017-06-21 progrium 	if dir.Name != "" {
314 b1b8898e 2017-06-21 progrium 		newpath := filepath.Join(filepath.Dir(ref.Path), dir.Name)
315 b1b8898e 2017-06-21 progrium 		if err := syscall.Rename(ref.Path, newpath); err != nil {
316 b1b8898e 2017-06-21 progrium 			return nil
317 b1b8898e 2017-06-21 progrium 		}
318 b1b8898e 2017-06-21 progrium 		ref.Lock()
319 b1b8898e 2017-06-21 progrium 		defer ref.Unlock()
320 b1b8898e 2017-06-21 progrium 		ref.Path = newpath
321 b1b8898e 2017-06-21 progrium 	}
322 b1b8898e 2017-06-21 progrium 
323 b1b8898e 2017-06-21 progrium 	if dir.Length != ^uint64(0) {
324 b1b8898e 2017-06-21 progrium 		if err := os.Truncate(ref.Path, int64(dir.Length)); err != nil {
325 b1b8898e 2017-06-21 progrium 			return err
326 b1b8898e 2017-06-21 progrium 		}
327 b1b8898e 2017-06-21 progrium 	}
328 b1b8898e 2017-06-21 progrium 
329 b1b8898e 2017-06-21 progrium 	// If either mtime or atime need to be changed, then
330 b1b8898e 2017-06-21 progrium 	// we must change both.
331 b1b8898e 2017-06-21 progrium 	//if dir.ModTime != time.Time{} || dir.AccessTime != ^uint32(0) {
332 b1b8898e 2017-06-21 progrium 	// mt, at := time.Unix(int64(dir.Mtime), 0), time.Unix(int64(dir.Atime), 0)
333 b1b8898e 2017-06-21 progrium 	// if cmt, cat := (dir.Mtime == ^uint32(0)), (dir.Atime == ^uint32(0)); cmt || cat {
334 b1b8898e 2017-06-21 progrium 	// 	st, e := os.Stat(fid.path)
335 b1b8898e 2017-06-21 progrium 	// 	if e != nil {
336 b1b8898e 2017-06-21 progrium 	// 		req.RespondError(toError(e))
337 b1b8898e 2017-06-21 progrium 	// 		return
338 b1b8898e 2017-06-21 progrium 	// 	}
339 b1b8898e 2017-06-21 progrium 	// 	switch cmt {
340 b1b8898e 2017-06-21 progrium 	// 	case true:
341 b1b8898e 2017-06-21 progrium 	// 		mt = st.ModTime()
342 b1b8898e 2017-06-21 progrium 	// 	default:
343 b1b8898e 2017-06-21 progrium 	// 		at = atime(st.Sys().(*syscall.Stat_t))
344 b1b8898e 2017-06-21 progrium 	// 	}
345 b1b8898e 2017-06-21 progrium 	// }
346 b1b8898e 2017-06-21 progrium 	// e := os.Chtimes(fid.path, at, mt)
347 b1b8898e 2017-06-21 progrium 	// if e != nil {
348 b1b8898e 2017-06-21 progrium 	// 	req.RespondError(toError(e))
349 b1b8898e 2017-06-21 progrium 	// 	return
350 b1b8898e 2017-06-21 progrium 	// }
351 b1b8898e 2017-06-21 progrium 	//}
352 b1b8898e 2017-06-21 progrium 	return nil
353 b1b8898e 2017-06-21 progrium }
354 b1b8898e 2017-06-21 progrium 
355 b1b8898e 2017-06-21 progrium func (sess *session) Version() (msize int, version string) {
356 b1b8898e 2017-06-21 progrium 	return p9p.DefaultMSize, p9p.DefaultVersion
357 b1b8898e 2017-06-21 progrium }