The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> fmtmsg.h - message display structures

#### SYNOPSIS

> `[XSI] #include <fmtmsg.h>`

#### DESCRIPTION

> The <fmtmsg.h> header shall define the following symbolic constants:

> MM_HARD
>   Source of the condition is hardware.
> MM_SOFT
>   Source of the condition is software.
> MM_FIRM
>   Source of the condition is firmware.
> MM_APPL
>   Condition detected by application.
> MM_UTIL
>   Condition detected by utility.
> MM_OPSYS
>   Condition detected by operating system.
> MM_RECOVER
>   Recoverable error.
> MM_NRECOV
>   Non-recoverable error.
> MM_HALT
>   Error causing application to halt.
> MM_ERROR
>   Application has encountered a non-fatal fault.
> MM_WARNING
>   Application has detected unusual non-error condition.
> MM_INFO
>   Informative message.
> MM_NOSEV
>   No severity level provided for the message.
> MM_PRINT
>   Display message on standard error.
> MM_CONSOLE
>   Display message on system console.

> The table below indicates the null values and identifiers for fmtmsg() arguments. The <fmtmsg.h> header shall define the symbolic constants in the Identifier column, which shall have the type indicated in the Type column:

> Argument | Type | Null-Value | Identifier
> --- | --- | --- | ---
> label | char * | (char*)0 | MM_NULLLBL
> severity | int | 0 | MM_NULLSEV
> class | long | 0L | MM_NULLMC
> text | char * | (char*)0 | MM_NULLTXT
> action | char * | (char*)0 | MM_NULLACT
> tag | char * | (char*)0 | MM_NULLTAG

> The <fmtmsg.h> header shall also define the following symbolic constants for use as return values for fmtmsg():

> MM_OK
>   The function succeeded.
> MM_NOTOK
>   The function failed completely.
> MM_NOMSG
>   The function was unable to generate a message on standard error, but otherwise succeeded.
> MM_NOCON
>   The function was unable to generate a console message, but otherwise succeeded.

> The following shall be declared as a function and may also be defined as a macro. A function prototype shall be provided.

>     int fmtmsg(long, const char *, int,
>         const char *, const char *, const char *);

The following sections are informative.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> XSH fmtmsg

#### CHANGE HISTORY

> First released in Issue 4, Version 2.

#### Issue 7

> This reference page is clarified with respect to macros and symbolic constants.

End of informative text.

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