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

       This page is part of release 3.54 of the Linux man-pages project.  A  description  of  the  project,  and
       information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.