fmtmsg.h0p
Message display structures
Usage
#include <fmtmsg.h>
Prolog
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
Overview
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.