| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON | The Linux Programming Interface |
GETRPCENT_R(3) Linux Programmer's Manual GETRPCENT_R(3)
getrpcent_r, getrpcbyname_r, getrpcbynumber_r - get RPC entry (reentrant)
#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():
_BSD_SOURCE || _SVID_SOURCE
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.
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.
ENOENT (getrpcent_r()) No more records in database.
ERANGE buf is too small. Try again with a larger buffer (and increased
buflen).
These functions are GNU extensions. Functions with similar names exist on
some other systems, though typically with different calling signatures.
getrpcent(3), rpc(5)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 2010-09-10 GETRPCENT_R(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface