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SETLOGMASK(3) Linux Programmer's Manual SETLOGMASK(3)
setlogmask - set log priority mask
#include <syslog.h>
int setlogmask(int mask);
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.
This function returns the previous log priority mask.
None.
POSIX.1-2001. Note that the description in POSIX.1-2001 is flawed.
closelog(3), openlog(3), syslog(3)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
2001-10-05 SETLOGMASK(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface