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SETLOGMASK(3)              Linux Programmer's Manual             SETLOGMASK(3)
NAME
       setlogmask - set log priority mask
SYNOPSIS
       #include <syslog.h>
       int setlogmask(int mask);
DESCRIPTION
       A  process  has a log priority mask that determines which calls to sys-
       log(3) may be logged.  All other calls will  be  ignored.   Logging  is
       enabled for the priorities that have the corresponding bit set in mask.
       The initial mask is such that logging is enabled for all priorities.
       The setlogmask() function sets this logmask for  the  calling  process,
       and  returns the previous mask.  If the mask argument is 0, the current
       logmask is not modified.
       The eight  priorities  are  LOG_EMERG,  LOG_ALERT,  LOG_CRIT,  LOG_ERR,
       LOG_WARNING,  LOG_NOTICE, LOG_INFO, and LOG_DEBUG.  The bit correspond-
       ing to a priority p is LOG_MASK(p).  Some systems also provide a  macro
       LOG_UPTO(p)  for the mask of all priorities in the above list up to and
       including p.
RETURN VALUE
       This function returns the previous log priority mask.
ERRORS
       None.
ATTRIBUTES
       For  an  explanation  of  the  terms  used   in   this   section,   see
       attributes(7).
       +-------------+---------------+------------------------+
       |Interface    | Attribute     | Value                  |
       +-------------+---------------+------------------------+
       |setlogmask() | Thread safety | MT-Unsafe race:LogMask |
       +-------------+---------------+------------------------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.
SEE ALSO
       closelog(3), openlog(3), syslog(3)
COLOPHON
       This  page  is  part of release 4.15 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.
                                  2017-09-15                     SETLOGMASK(3)
SETLOGMASK(3P)             POSIX Programmer's Manual            SETLOGMASK(3P)
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.
NAME
       setlogmask -- set the log priority mask
SYNOPSIS
       #include <syslog.h>
       int setlogmask(int maskpri);
DESCRIPTION
       Refer to closelog().
COPYRIGHT
       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 Electri-
       cal 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 http://www.unix.org/online.html .
       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 https://www.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                       SETLOGMASK(3P)