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NAME

       getrpcent_r,   getrpcbyname_r,   getrpcbynumber_r   -   get  RPC  entry
       (reentrant)

SYNOPSIS

       #include <netdb.h>

       int getrpcent_r(struct rpcent *result_buf, char *buf,
                       size_t buflen, struct rpcent **result);

       int getrpcbyname_r(const char *name,
                       struct rpcent *result_buf, char *buf,
                       size_t buflen, struct rpcent **result);

       int getrpcbynumber_r(int number,
                       struct rpcent *result_buf, char *buf,
                       size_t buflen, struct rpcent **result);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       getrpcent_r(), getrpcbyname_r(), getrpcbynumber_r():
           _BSD_SOURCE || _SVID_SOURCE

DESCRIPTION

       The getrpcent_r(), getrpcbyname_r(), and  getrpcbynumber_r()  functions
       are   the   reentrant   equivalents   of,  respectively,  getrpcent(3),
       getrpcbyname(3), and getrpcbynumber(3).  They differ in  the  way  that
       the rpcent structure is returned, and in the function calling signature
       and return value.  This manual page describes just the differences from
       the nonreentrant functions.

       Instead  of  returning  a  pointer  to  a  statically  allocated rpcent
       structure as the function result, these functions  copy  the  structure
       into the location pointed to by result_buf.

       The  buf  array  is  used  to store the string fields pointed to by the
       returned rpcent structure.  (The nonreentrant functions allocate  these
       strings  in  static  storage.)   The size of this array is specified in
       buflen.  If buf is too small, the call fails with the error ERANGE, and
       the  caller  must  try again with a larger buffer.  (A buffer of length
       1024 bytes should be sufficient for most applications.)

       If the function call successfully obtains an RPC record,  then  *result
       is set pointing to result_buf; otherwise, *result is set to NULL.

RETURN VALUE

       On success, these functions return 0.  On error, they return one of the
       positive error numbers listed in ERRORS.

       On error, record not found (getrpcbyname_r(),  getrpcbynumber_r()),  or
       end of input (getrpcent_r()) result is set to NULL.

ERRORS

       ENOENT (getrpcent_r()) No more records in database.

       ERANGE buf is too small.  Try again with a larger buffer (and increased
              buflen).

CONFORMING TO

       These functions are GNU extensions.  Functions with similar names exist
       on   some  other  systems,  though  typically  with  different  calling
       signatures.

SEE ALSO

       getrpcent(3), rpc(5)

COLOPHON

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       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.