EXTATTR_MAXNAMELEN
char attrname[EXTATTR_MAXNAMELEN];
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN,
char attrname[EXTATTR_MAXNAMELEN];
error = copyin(uap->attrname, attrname, EXTATTR_MAXNAMELEN);
char attrname[EXTATTR_MAXNAMELEN];
error = copyin(uap->attrname, attrname, EXTATTR_MAXNAMELEN);
char attrname[EXTATTR_MAXNAMELEN];
error = copyin(uap->attrname, attrname, EXTATTR_MAXNAMELEN);