NAME

       addseverity - introduce new severity classes

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <fmtmsg.h>

       int addseverity(int severity, const char *s);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       addseverity():
           Since glibc 2.19:
               _DEFAULT_SOURCE
           glibc 2.19 and earlier:
               _SVID_SOURCE

DESCRIPTION

       This  function  allows  the introduction of new severity classes which can be addressed by
       the severity argument of the fmtmsg(3) function.  By default, that function knows only how
       to  print  messages  for  severity  0-4 (with strings (none), HALT, ERROR, WARNING, INFO).
       This call attaches the given string s to the given value severity.   If  s  is  NULL,  the
       severity  class  with  the  numeric  value  severity  is  removed.   It is not possible to
       overwrite or remove one of the default severity  classes.   The  severity  value  must  be
       nonnegative.

RETURN VALUE

       Upon  success,  the  value  MM_OK  is returned.  Upon error, the return value is MM_NOTOK.
       Possible errors include: out of  memory,  attempt  to  remove  a  nonexistent  or  default
       severity class.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌───────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │Interface                                                      │ Attribute     │ Value   │
       ├───────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │addseverity()                                                  │ Thread safety │ MT-Safe │
       └───────────────────────────────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       GNU.

HISTORY

       glibc 2.1.  System V.

NOTES

       New severity classes can also be added by setting the environment variable SEV_LEVEL.

SEE ALSO

       fmtmsg(3)