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 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 priori-
ties.
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
XPG4. Note that the description in POSIX 1003.1-2001 is flawed.
SEE ALSO closelog(3), openlog(3), syslog(3)
2001-10-05 SETLOGMASK(3)
Check Out this Related Man Page
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 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 priori-
ties.
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 | MT-Unsafe race:LogMask |
+-------------+---------------+------------------------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
SEE ALSO closelog(3), openlog(3), syslog(3)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
2017-09-15 SETLOGMASK(3)
1. Even if i have the handles for ctrl+c it gives off a segfault
2. syslog doesn't log LOG_ERR event with log masked specified or non specified, it logs LOG_WARNING however...
#include <sys/types.h> /* include this before any other sys headers */
#include <sys/stat.h>
#include <fcntl.h>... (2 Replies)
Using redhat 64 bit ver 6.2
I have simple c++ app that is trying to write to syslog like this: /*
try to write massage into linux log
*/
void foo::writeToSyslog()
{
openlog("testlogfoo", 0, 24);
// Send the message.
... (1 Reply)