NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON

SETLOGMASK(3)             Linux Programmer's Manual            SETLOGMASK(3)

NAME         top

       setlogmask - set log priority mask

SYNOPSIS         top

       #include <syslog.h>

       int setlogmask(int mask);

DESCRIPTION         top

       A process has a log priority mask that determines which calls to
       syslog(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
       corresponding 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         top

       This function returns the previous log priority mask.

ERRORS         top

       None.

ATTRIBUTES         top

       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         top

       POSIX.1-2001, POSIX.1-2008.

SEE ALSO         top

       closelog(3), openlog(3), syslog(3)

COLOPHON         top

       This page is part of release 4.08 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/.

                                 2015-08-08                    SETLOGMASK(3)