// Return bytes written, resulting content, and any error.
func write(conn *client.Conn, username, filepath, contents string) (int, string, error) {
fsys, err := conn.Attach(nil, username, "/")
if err != nil {
return 0, "", err
}
fid, err := fsys.Open(filepath, plan9.OWRITE)
if err != nil {
return 0, "", err
}
defer fid.Close()
n, err := fid.Write([]byte("whom"))
if err != nil {
return n, "", err
}
newcontents, err := ioutil.ReadFile(rootdir + "/" + filepath)
return n, string(newcontents), err
}
func read(conn *client.Conn, username, filepath string) (string, error) {
fsys, err := conn.Attach(nil, username, "/")
if err != nil {
return "", err
}
fid, err := fsys.Open(filepath, plan9.OREAD)
if err != nil {
return "", err
}
defer fid.Close()
var buf []byte
if fid.Qid().Type&plan9.QTDIR != 0 {
buf, err = readDir(fid)
} else {
buf, err = ioutil.ReadAll(fid)
}
return string(buf), err
}
// Return owner and group of given file.
func usergroup(conn *client.Conn, filepath string) (string, string, error) {
fsys, err := conn.Attach(nil, "adm", "/")
if err != nil {
return "", "", err
}
dir, err := fsys.Stat(filepath)
if err != nil {
return "", "", err
}
return dir.Uid, dir.Gid, nil
}
// Create file or directory.
func create(conn *client.Conn, username, filepath string, mode os.FileMode) error {
fsys, err := conn.Attach(nil, username, "/")
if err != nil {
return err
}
fid, err := fsys.Create(filepath, plan9.OREAD, plan9.Perm(mode))
if err != nil {
return err
}
fid.Close()
return nil
}