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():
           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).
       ┌─────────────────────┬───────────────┬────────────────┐
       │ Interface           │ Attribute     │ Value          │
       ├─────────────────────┼───────────────┼────────────────┤
       │ getrpcent_r(),      │ Thread safety │ MT-Safe locale │
       │ getrpcbyname_r(),   │               │                │
       │ getrpcbynumber_r()  │               │                │
       └─────────────────────┴───────────────┴────────────────┘

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 5.10 of  the  Linux  man-pages  project.   A  description  of  the  project,
       information   about   reporting   bugs,   and   the  latest  version  of  this  page,  can  be  found  at
       https://www.kernel.org/doc/man-pages/.

GNU                                                2017-09-15                                     GETRPCENT_R(3)