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NAME

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

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <netdb.h>

       int getrpcent_r(struct rpcent *result_buf, char buf[.buflen],
                       size_t buflen, struct rpcent **result);
       int getrpcbyname_r(const char *name,
                       struct rpcent *result_buf, char buf[.buflen],
                       size_t buflen, struct rpcent **result);
       int getrpcbynumber_r(int number,
                       struct rpcent *result_buf, char buf[.buflen],
                       size_t buflen, struct rpcent **result);

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

       getrpcent_r(), getrpcbyname_r(), getrpcbynumber_r():
           Since glibc 2.19:
               _DEFAULT_SOURCE
           glibc 2.19 and earlier:
               _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).

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌───────────────────────────────────────────────────────────────────────┬───────────────┬────────────────┐
       │InterfaceAttributeValue          │
       ├───────────────────────────────────────────────────────────────────────┼───────────────┼────────────────┤
       │getrpcent_r(), getrpcbyname_r(), getrpcbynumber_r()                    │ Thread safety │ MT-Safe locale │
       └───────────────────────────────────────────────────────────────────────┴───────────────┴────────────────┘

VERSIONS

       Functions  with  similar  names  exist  on  some  other  systems, though typically with different calling
       signatures.

STANDARDS

       GNU.

SEE ALSO

       getrpcent(3), rpc(5)