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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
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.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────┬───────────────┬────────────────────────┐
│Interface │ Attribute │ Value │
├─────────────┼───────────────┼────────────────────────┤
│setlogmask() │ Thread safety │ MT-Unsafe race:LogMask │
└─────────────┴───────────────┴────────────────────────┘
POSIX.1-2001, POSIX.1-2008.
LOG_UPTO() will be included in the next release of the POSIX
specification (Issue 8).
closelog(3), openlog(3), syslog(3)
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2020-06-09 SETLOGMASK(3)
Pages that refer to this page: closelog(3) , openlog(3) , syslog(3) , vsyslog(3)
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