setlogmask man page on CentOS

setlogmask man page on CentOS

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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  current  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
       This function returns the previous log priority mask.

ERRORS
       None.

CONFORMING TO
       POSIX.1-2001.  Note that the description in POSIX.1-2001 is flawed.

SEE ALSO
       closelog(3), openlog(3), syslog(3)

				  2001-10-05			 SETLOGMASK(3)

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