func (u *vUser) IsMember(g p.Group) bool {
// The Id is the immutable fact for the user.
// It is what is stored as uid,gid on files.
// It happens to be int in the go9p implementation
// (as opposed to string in Plan9), but this has the
// advantage of using compiler to ensure that we can't
// check an Id() against a Name().
for _, b := range u.groups {
if b.Id() == g.Id() {
return true
}
}
return false
}
// Initializes the fields of a file and add it to a directory.
// Returns nil if successful, or an error.
func (f *File) Add(dir *File, name string, uid p.User, gid p.Group, mode uint32, ops interface{}) error {
lock.Lock()
qpath := qnext
qnext++
lock.Unlock()
f.Qid.Type = uint8(mode >> 24)
f.Qid.Version = 0
f.Qid.Path = qpath
f.Mode = mode
f.Atime = uint32(time.Now().Unix())
f.Mtime = f.Atime
f.Length = 0
f.Name = name
if uid != nil {
f.Uid = uid.Name()
f.Uidnum = uint32(uid.Id())
} else {
f.Uid = "none"
f.Uidnum = p.NOUID
}
if gid != nil {
f.Gid = gid.Name()
f.Gidnum = uint32(gid.Id())
} else {
f.Gid = "none"
f.Gidnum = p.NOUID
}
f.Muid = ""
f.Muidnum = p.NOUID
f.Ext = ""
if dir != nil {
f.Parent = dir
dir.Lock()
for p := dir.cfirst; p != nil; p = p.next {
if name == p.Name {
dir.Unlock()
return Eexist
}
}
if dir.clast != nil {
dir.clast.next = f
} else {
dir.cfirst = f
}
f.prev = dir.clast
f.next = nil
dir.clast = f
dir.Unlock()
} else {
f.Parent = f
}
f.Ops = ops
return nil
}