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); |
![[Note]](../stylesheet/note.png) |
Note | ||||
|---|---|---|---|---|---|
|
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
-
bufis too small. Try again with a larger buffer (and increasedbuflen).
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
getrpcent_r(), getrpcbyname_r(), getrpcbynumber_r() |
Thread safety | MT-Safe locale |
CONFORMING TO
These functions are GNU extensions. Functions with similar names exist on some other systems, though typically with different calling signatures.
COLOPHON
This page is part of release 4.07 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/.
|
Copyright 2008, Linux Foundation, written by Michael Kerrisk <mtk.manpagesgmail.com> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END |