zfs_asprintf
di->tosnap = zfs_asprintf(hdl, "%s@%s", di->ds, di->tmpsnap);
di->fromsnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrf);
di->tosnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrt);
di->tomnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", di->dsmnt,
di->frommnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", frommntpt,
char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
path = zfs_asprintf(hdl, "%llu", (u_longlong_t)value);
path = zfs_asprintf(hdl, "%s%llu", type,
tmp = zfs_asprintf(hdl, "%s-%llu", path,
entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s",
propname = zfs_asprintf(hdl, "unsupported@%s",