NAME

catgets — read a program message

SYNOPSIS

#include <nl_types.h>

char *catgets(nl_catd catd, int set_id, int msg_id, const char *s);


DESCRIPTION

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 results are undefined if catd is not a value returned by catopen() for a message catalog still open in the process. 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 thread-safe.

RETURN VALUE

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 shall be set to indicate the error.

ERRORS

The catgets() function shall fail if:

[EINTR]

The read operation was terminated due to the receipt of a signal, and no data was transferred.

[ENOMSG]

The message identified by set_id and msg_id is not in the message catalog.

The catgets() function may fail if:

[EBADF]

The catd argument is not a valid message catalog descriptor open for reading.

[EBADMSG]

The message identified by set_id and msg_id in the specified message catalog did not satisfy implementation-defined security criteria.

[EINVAL]

The message catalog identified by catd is corrupted.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

catclose, catopen

XBD <nl_types.h>

CHANGE HISTORY

First released in Issue 2.

Issue 5

A note indicating that this function need not be reentrant is added to the DESCRIPTION.

Issue 6

In the DESCRIPTION, the note about reentrancy is expanded to cover thread-safety.

Issue 7

Austin Group Interpretation 1003.1-2001 #044 is applied, changing the "may fail" [EINTR] and [ENOMSG] errors to become "shall fail" errors, updating the RETURN VALUE section, and updating the DESCRIPTION to note that: "The results are undefined if catd is not a value returned by catopen() for a message catalog still open in the process."

The catgets() function is moved from the XSI option to the Base.