smbfs_smb_lookup
int smbfs_smb_lookup(struct smbnode *dnp, const char *name, int nmlen,
error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, scred);
error = smbfs_smb_lookup(dnp, NULL, 0, fap, scred);
error = smbfs_smb_lookup(dnp, name, nmlen, fap, scred);
error = smbfs_smb_lookup(np, NULL, 0, &fattr, scred);
error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, scred);
error = smbfs_smb_lookup(dnp, name, len, &fattr, scred);