getrpcbynumber_r man page on ElementaryOS

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

NAME
       getrpcent_r,  getrpcbyname_r,  getrpcbynumber_r	- get RPC entry (reen‐
       trant)

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), getrpcby‐
       name(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  non‐
       reentrant functions.

       Instead	of returning a pointer to a statically allocated rpcent struc‐
       ture 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).

CONFORMING TO
       These functions are GNU extensions.  Functions with similar names exist
       on  some	 other systems, though typically with different calling signa‐
       tures.

SEE ALSO
       getrpcent(3), rpc(5)

COLOPHON
       This page is part of release 3.54 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)
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