Updated: 2021/Feb/13

RPC_CLNT_AUTH(3)           Library Functions Manual           RPC_CLNT_AUTH(3)

     auth_destroy, authnone_create, authsys_create, authsys_create_default,
     set_rpc_maxgrouplist - library routines for client side remote procedure
     call authentication

     Standard C Library (libc, -lc)

     #include <rpc/rpc.h>

     auth_destroy(AUTH *auth);

     AUTH *

     AUTH *
     authsys_create(const char *host, const uid_t uid, const gid_t gid,
         const int len, const gid_t *aup_gids);

     AUTH *

     set_rpc_maxgrouplist(int num);

     These routines are part of the RPC library that allows C language
     programs to make procedure calls on other machines across the network,
     with desired authentication.

     These routines are normally called after creating the CLIENT handle.  The
     cl_auth field of the CLIENT structure should be initialized by the AUTH
     structure returned by some of the following routines.  The client's
     authentication information is passed to the server when the RPC call is

     Only the NULL and the SYS style of authentication is discussed here.

     auth_destroy()            A function macro that destroys the
                               authentication information associated with
                               auth.  Destruction usually involves
                               deallocation of private data structures.  The
                               use of auth() is undefined after calling

     authnone_create()         Create and return an RPC authentication handle
                               that passes nonusable authentication
                               information with each remote procedure call.
                               This is the default authentication used by RPC.

     authsys_create()          Create and return an RPC authentication handle
                               that contains AUTH_SYS authentication
                               information.  The parameter host is the name of
                               the machine on which the information was
                               created; uid is the user's user ID; gid is the
                               user's current group ID; len and aup_gids refer
                               to a counted array of groups to which the user

     authsys_create_default()  Call authsys_create() with the appropriate

     set_rpc_maxgrouplist()    Allow the application to set the maximum size
                               of the group list that will be used in
                               authunix_create_default(to) num.  Some servers
                               will refuse mounts if the group list is larger
                               than it expects (like 8).

     rpc(3), rpc_clnt_calls(3), rpc_clnt_create(3)

NetBSD 9.99                     October 3, 2020                    NetBSD 9.99