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       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.


       fmtmsg.h — message display structures


       #include <fmtmsg.h>


       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:

                             │ArgumentTypeNull-ValueIdentifier │
                             │labelchar * │ (char*)0   │ MM_NULLLBL │
                             │severityint    │ 0          │ MM_NULLSEV │
                             │classlong0L         │ MM_NULLMC  │
                             │textchar * │ (char*)0   │ MM_NULLTXT │
                             │actionchar * │ (char*)0   │ MM_NULLACT │
                             │tagchar * │ (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

       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.








       The System Interfaces volume of POSIX.1‐2008, fmtmsg()


       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2013 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX),  The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical  Corrigendum  1  applied.)  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 .

       Any typographical or formatting errors that appear in this page are most  likely  to  have
       been  introduced  during  the conversion of the source files to man page format. To report
       such errors, see .