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setlogmask
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
setlogmask - set log priority mask
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#include <syslog.h>
int setlogmask(int mask);
DESCRIPTION
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
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 | M-Unsafe race:LogMask
|
STANDARDS
POSIX.-2008.
HISTORY
POSIX.-2001.
LOG_UPTO()
will be included in the next release of the POSIX specification (Issue 8).
SEE ALSO
closelog(3),
openlog(3),
syslog(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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