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fmtmsg (3)
  • fmtmsg (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • fmtmsg (3) ( Solaris man: Библиотечные вызовы )
  • >> fmtmsg (3) ( FreeBSD man: Библиотечные вызовы )
  • fmtmsg (3) ( Linux man: Библиотечные вызовы )
  • fmtmsg (3) ( POSIX man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    fmtmsg
    
     - display a detailed diagnostic message
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <fmtmsg.h>
    int Fo fmtmsg Fa long classification const char *label int severity Fa const char *text const char *action const char *tag Fc  

    DESCRIPTION

    The fmtmsg ();
    function displays a detailed diagnostic message, based on the supplied arguments, to stderr and/or the system console.

    The Fa classification argument is the bitwise inclusive OR of zero or one of the manifest constants from each of the classification groups below. The Output classification group is an exception since both MM_PRINT and MM_CONSOLE may be specified.

    Output

    MM_PRINT
    Output should take place on stderr
    MM_CONSOLE
    Output should take place on the system console.

    "Source of Condition (Major)"

    MM_HARD
    The source of the condition is hardware related.
    MM_SOFT
    The source of the condition is software related.
    MM_FIRM
    The source of the condition is firmware related.

    "Source of Condition (Minor)"

    MM_APPL
    The condition was detected at the application level.
    MM_UTIL
    The condition was detected at the utility level.
    MM_OPSYS
    The condition was detected at the operating system level.

    Status

    MM_RECOVER
    The application can recover from the condition.
    MM_NRECOV
    The application is unable to recover from the condition.

    Alternatively, the MM_NULLMC manifest constant may be used to specify no classification.

    The Fa label argument indicates the source of the message. It is made up of two fields separated by a colon (`:' ) The first field can be up to 10 bytes, and the second field can be up to 14 bytes. The MM_NULLLBL manifest constant may be used to specify no label.

    The Fa severity argument identifies the importance of the condition. One of the following manifest constants should be used for this argument.

    MM_HALT
    The application has confronted a serious fault and is halting.
    MM_ERROR
    The application has detected a fault.
    MM_WARNING
    The application has detected an unusual condition, that could be indicative of a problem.
    MM_INFO
    The application is providing information about a non-error condition.
    MM_NOSEV
    No severity level supplied.

    The Fa text argument details the error condition that caused the message. There is no limit on the size of this character string. The MM_NULLTXT manifest constant may be used to specify no text.

    The Fa action argument details how the error-recovery process should begin. Upon output, fmtmsg ();
    will prefix Qq Li TO FIX: to the beginning of the Fa action argument. The MM_NULLACT manifest constant may be used to specify no action.

    The Fa tag argument should reference online documentation for the message. This usually includes the Fa label and a unique identifying number. An example tag is Qq Li BSD:ls:168 . The MM_NULLTAG manifest constant may be used to specify no tag.  

    RETURN VALUES

    The fmtmsg ();
    function returns MM_OK upon success, MM_NOMSG to indicate output to stderr failed, MM_NOCON to indicate output to the system console failed, or MM_NOTOK to indicate output to stderr and the system console failed.  

    ENVIRONMENT

    The MSGVERB (message verbosity) environment variable specifies which arguments to fmtmsg ();
    will be output to stderr and in which order. MSGVERB should be a colon (`:' ) separated list of identifiers. Valid identifiers include: label , severity , text , action and tag If invalid identifiers are specified or incorrectly separated, the default message verbosity and ordering will be used. The default ordering is equivalent to a MSGVERB with a value of Qq Li label:severity:text:action:tag .  

    EXAMPLES

    The code:
    fmtmsg(MM_UTIL | MM_PRINT, "BSD:ls", MM_ERROR,
        "illegal option -- z", "refer to manual", "BSD:ls:001");
    

    will output:

    BSD:ls: ERROR: illegal option -- z
    TO FIX: refer to manual BSD:ls:001
    

    to stderr

    The same code, with MSGVERB set to Qq Li text:severity:action:tag , produces:

    illegal option -- z: ERROR
    TO FIX: refer to manual BSD:ls:001
    
     

    SEE ALSO

    err(3), exit(3), strerror(3)  

    STANDARDS

    The fmtmsg ();
    function conforms to St -p1003.1-2001 .  

    HISTORY

    The fmtmsg ();
    function first appeared in Fx 5.0 .  

    BUGS

    Specifying MM_NULLMC for the Fa classification argument makes little sense, since without an output specified, fmtmsg ();
    is unable to do anything useful.

    In order for fmtmsg ();
    to output to the system console, the effective user must have appropriate permission to write to /dev/console This means that on most systems fmtmsg ();
    will return MM_NOCON unless the effective user is root.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ENVIRONMENT
    EXAMPLES
    SEE ALSO
    STANDARDS
    HISTORY
    BUGS


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