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+.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
+.\"
+.\" Permission is granted to make and distribute verbatim copies of this
+.\" manual provided the copyright notice and this permission notice are
+.\" preserved on all copies.
+.\"
+.\" Permission is granted to copy and distribute modified versions of this
+.\" manual under the conditions for verbatim copying, provided that the
+.\" entire resulting derived work is distributed under the terms of a
+.\" permission notice identical to this one.
+.\" 
+.\" Since the Linux kernel and libraries are constantly changing, this
+.\" manual page may be incorrect or out-of-date.  The author(s) assume no
+.\" responsibility for errors or omissions, or for damages resulting from
+.\" the use of the information contained herein.  The author(s) may not
+.\" have taken the same level of care in the production of this manual,
+.\" which is licensed free of charge, as they might when working
+.\" professionally.
+.\" 
+.\" Formatted or processed versions of this manual, if unaccompanied by
+.\" the source, must acknowledge the copyright and authors of this work.
+.\"
+.TH SETLOGMASK 3  2001-10-05 "" "Linux Programmer's Manual"
+.SH NAME
+setlogmask \- set log priority mask
+.SH SYNOPSIS
+.nf
+.B #include <syslog.h>
+.sp
+.BI "int setlogmask(int " mask );
+.fi
+.SH DESCRIPTION
+A process has a log priority mask that determines which calls to
+.BR syslog (3)
+may be logged. All other calls will be ignored.
+Logging is enabled for the priorities that have the corresponding
+bit set in
+.IR mask .
+The initial mask is such that logging is enabled for all priorities.
+.LP
+The
+.B 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.
+.LP
+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 \fIp\fP is LOG_MASK(\fIp\fP).
+Some systems also provide a macro LOG_UPTO(\fIp\fP) for the mask
+of all priorities in the above list up to and including \fIp\fP.
+.SH "RETURN VALUE"
+This function returns the previous log priority mask. 
+.SH ERRORS
+None.
+.\" .SH NOTES
+.\" The glibc logmask handling was broken in versions before glibc 2.1.1.
+.SH "CONFORMING TO"
+XPG4.
+Note that the description in POSIX 1003.1-2001 is flawed.
+.SH "SEE ALSO"
+.BR closelog (3),
+.BR openlog (3),
+.BR syslog (3)