MAXSDNAME
dorename(&msg, oldname, newname, MAXSDNAME);
dorename(&msg, sd.name, sdname, MAXSDNAME);
dorename(&msg, sd.name, sdname, MAXSDNAME);
imin(strlen(sd->name) + 1, MAXSDNAME - 3));
sd->name[MAXSDNAME - 1] = '\0';
imin(strlen(sd->name) + 1, MAXSDNAME - 3));
sd->name[MAXSDNAME - 1] = '\0';
bcopy(msg->newname, sd->name, MAXSDNAME);
char name[MAXSDNAME]; /* name of subdisk */