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/.