char *catgets(nl_catd catd, int set_id, intmsg_id, const char
The catgets() function shall attempt to read message msg_id,
in set set_id, from the message catalog
identified by catd. The catd argument is a message catalog
descriptor returned from an earlier call to catopen(). The s
argument points to a default message string which shall be returned
by catgets() if it cannot retrieve the identified message.
The catgets() function need not be reentrant. A function that
is not required to be reentrant is not required to be
If the identified message is retrieved successfully, catgets()
shall return a pointer to an internal buffer area
containing the null-terminated message string. If the call is unsuccessful
for any reason, s shall be returned and
errno may be set to indicate the error.
The catgets() function may fail if:
The catd argument is not a valid message catalog descriptor
open for reading.
The message identified by set_id and msg_id in the specified
message catalog did not satisfy
implementation-defined security criteria.
The read operation was terminated due to the receipt of a signal,
and no data was transferred.
The message catalog identified by catd is corrupted.
The message identified by set_id and msg_id is not in
the message catalog.
The following sections are informative.
catclose() , catopen() , the Base Definitions volume of
IEEE Std 1003.1-2001, <nl_types.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at