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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():
_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 sig‐
nature and return value. This manual page describes just the differences from the non‐
reentrant 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 struc‐
ture. (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 (getrp‐
cent_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).
CONFORMING TO
These functions are GNU extensions. Functions with similar names exist on some other sys‐
tems, though typically with different calling signatures.
SEE ALSO
getrpcent(3), rpc(5)
COLOPHON
This page is part of release 3.74 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 http://www.kernel.org/doc/man-pages/.
GNU 2010-09-10 GETRPCENT_R(3)
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