func (*Ufs) Stat(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
st := dir2Dir(fid.path, fid.st, req.Conn.Dotu, req.Conn.Srv.Upool)
req.RespondRstat(st)
}
func (*Ufs) Remove(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
e := os.Remove(fid.path)
if e != nil {
req.RespondError(toError(e))
return
}
req.RespondRremove()
}
func (*Ufs) Write(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
tc := req.Tc
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
n, e := fid.file.WriteAt(tc.Data, int64(tc.Offset))
if e != nil {
req.RespondError(toError(e))
return
}
req.RespondRwrite(uint32(n))
}
func (*Ufs) Open(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
tc := req.Tc
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
var e error
fid.file, e = os.OpenFile(fid.path, omode2uflags(tc.Mode), 0)
if e != nil {
req.RespondError(toError(e))
return
}
req.RespondRopen(dir2Qid(fid.st), 0)
}
func (*Ufs) Walk(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
tc := req.Tc
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
if req.Newfid.Aux == nil {
req.Newfid.Aux = new(Fid)
}
nfid := req.Newfid.Aux.(*Fid)
wqids := make([]p.Qid, len(tc.Wname))
path := fid.path
i := 0
for ; i < len(tc.Wname); i++ {
p := path + "/" + tc.Wname[i]
st, err := os.Lstat(p)
if err != nil {
if i == 0 {
req.RespondError(Enoent)
return
}
break
}
wqids[i] = *dir2Qid(st)
path = p
}
nfid.path = path
req.RespondRwalk(wqids[0:i])
}
func (*Ufs) Attach(req *srv.Req) {
if req.Afid != nil {
req.RespondError(srv.Enoauth)
return
}
tc := req.Tc
fid := new(Fid)
if len(tc.Aname) == 0 {
fid.path = *root
} else {
fid.path = tc.Aname
}
req.Fid.Aux = fid
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
qid := dir2Qid(fid.st)
req.RespondRattach(qid)
}
func (*Ufs) Wstat(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
dir := &req.Tc.Dir
if dir.Mode != 0xFFFFFFFF {
mode := dir.Mode & 0777
if req.Conn.Dotu {
if dir.Mode&p.DMSETUID > 0 {
mode |= syscall.S_ISUID
}
if dir.Mode&p.DMSETGID > 0 {
mode |= syscall.S_ISGID
}
}
e := os.Chmod(fid.path, os.FileMode(mode))
if e != nil {
req.RespondError(toError(e))
return
}
}
uid, gid := p.NOUID, p.NOUID
if req.Conn.Dotu {
uid = dir.Uidnum
gid = dir.Gidnum
}
// Try to find local uid, gid by name.
if (dir.Uid != "" || dir.Gid != "") && !req.Conn.Dotu {
uid, err = lookup(dir.Uid, false)
if err != nil {
req.RespondError(err)
return
}
// BUG(akumar): Lookup will never find gids
// corresponding to group names, because
// it only operates on user names.
gid, err = lookup(dir.Gid, true)
if err != nil {
req.RespondError(err)
return
}
}
if uid != p.NOUID || gid != p.NOUID {
e := os.Chown(fid.path, int(uid), int(gid))
if e != nil {
req.RespondError(toError(e))
return
}
}
if dir.Name != "" {
path := fid.path[0:strings.LastIndex(fid.path, "/")+1] + "/" + dir.Name
err := syscall.Rename(fid.path, path)
if err != nil {
req.RespondError(toError(err))
return
}
fid.path = path
}
if dir.Length != 0xFFFFFFFFFFFFFFFF {
e := os.Truncate(fid.path, int64(dir.Length))
if e != nil {
req.RespondError(toError(e))
return
}
}
// If either mtime or atime need to be changed, then
// we must change both.
if dir.Mtime != ^uint32(0) || dir.Atime != ^uint32(0) {
mt, at := time.Unix(int64(dir.Mtime), 0), time.Unix(int64(dir.Atime), 0)
if cmt, cat := (dir.Mtime == ^uint32(0)), (dir.Atime == ^uint32(0)); cmt || cat {
st, e := os.Stat(fid.path)
if e != nil {
req.RespondError(toError(e))
return
}
switch cmt {
case true:
mt = st.ModTime()
default:
at = atime(st.Sys().(*syscall.Stat_t))
}
}
e := os.Chtimes(fid.path, at, mt)
if e != nil {
req.RespondError(toError(e))
return
}
}
req.RespondRwstat()
}
func (*Ufs) Clunk(req *srv.Req) { req.RespondRclunk() }
func (*Ufs) Read(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
tc := req.Tc
rc := req.Rc
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
p.InitRread(rc, tc.Count)
var count int
var e error
if fid.st.IsDir() {
b := rc.Data
if tc.Offset == 0 {
fid.file.Close()
fid.file, e = os.OpenFile(fid.path, omode2uflags(req.Fid.Omode), 0)
if e != nil {
req.RespondError(toError(e))
return
}
}
for len(b) > 0 {
if fid.dirs == nil {
fid.dirs, e = fid.file.Readdir(16)
if e != nil && e != io.EOF {
req.RespondError(toError(e))
return
}
if len(fid.dirs) == 0 {
break
}
}
var i int
for i = 0; i < len(fid.dirs); i++ {
path := fid.path + "/" + fid.dirs[i].Name()
st := dir2Dir(path, fid.dirs[i], req.Conn.Dotu, req.Conn.Srv.Upool)
sz := p.PackDir(st, b, req.Conn.Dotu)
if sz == 0 {
break
}
b = b[sz:]
count += sz
}
if i < len(fid.dirs) {
fid.dirs = fid.dirs[i:]
break
} else {
fid.dirs = nil
}
}
} else {
count, e = fid.file.ReadAt(rc.Data, int64(tc.Offset))
if e != nil && e != io.EOF {
req.RespondError(toError(e))
return
}
}
p.SetRreadCount(rc, uint32(count))
req.Respond()
}
func (*Ufs) Create(req *srv.Req) {
fid := req.Fid.Aux.(*Fid)
tc := req.Tc
err := fid.stat()
if err != nil {
req.RespondError(err)
return
}
path := fid.path + "/" + tc.Name
var e error = nil
var file *os.File = nil
switch {
case tc.Perm&p.DMDIR != 0:
e = os.Mkdir(path, os.FileMode(tc.Perm&0777))
case tc.Perm&p.DMSYMLINK != 0:
e = os.Symlink(tc.Ext, path)
case tc.Perm&p.DMLINK != 0:
n, e := strconv.ParseUint(tc.Ext, 10, 0)
if e != nil {
break
}
ofid := req.Conn.FidGet(uint32(n))
if ofid == nil {
req.RespondError(srv.Eunknownfid)
return
}
e = os.Link(ofid.Aux.(*Fid).path, path)
ofid.DecRef()
case tc.Perm&p.DMNAMEDPIPE != 0:
case tc.Perm&p.DMDEVICE != 0:
req.RespondError(&p.Error{"not implemented", p.EIO})
return
default:
var mode uint32 = tc.Perm & 0777
if req.Conn.Dotu {
if tc.Perm&p.DMSETUID > 0 {
mode |= syscall.S_ISUID
}
if tc.Perm&p.DMSETGID > 0 {
mode |= syscall.S_ISGID
}
}
file, e = os.OpenFile(path, omode2uflags(tc.Mode)|os.O_CREATE, os.FileMode(mode))
}
if file == nil && e == nil {
file, e = os.OpenFile(path, omode2uflags(tc.Mode), 0)
}
if e != nil {
req.RespondError(toError(e))
return
}
fid.path = path
fid.file = file
err = fid.stat()
if err != nil {
req.RespondError(err)
return
}
req.RespondRcreate(dir2Qid(fid.st), 0)
}