getrpcent_r

GETRPCENT_R(3)             Linux Programmer's Manual            GETRPCENT_R(3)



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 5.04 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)