setlogmask(3) Library Functions Manual setlogmask(3) setlogmask - (libc -lc) #include int setlogmask(int mask); syslog(3) . . mask. . setlogmask() . mask 0 . LOG_EMERG LOG_ALERT LOG_CRIT LOG_ERR LOG_WARNING LOG_NOTICE LOG_INFO LOG_DEBUG. p LOG_MASK(p). LOG_UPTO(p) p . . . attributes(7). +--------+------------------------------------+------------------------+ || | | +--------+------------------------------------+------------------------+ |setlogmask()| | MT-Unsafe race:LogMask | | | | | +--------+------------------------------------+------------------------+ POSIX.1-2008. POSIX.1-2001. LOG_UPTO() POSIX ( 8). closelog(3), openlog(3), syslog(3) 3 . . : . 6.18 8 2026 setlogmask(3)