luaposix 36.2.1

• Index

Contents

• Functions
• Constants

Modules

• posix
• posix.ctype
• posix.dirent
• posix.errno
• posix.fcntl
• posix.fnmatch
• posix.glob
• posix.grp
• posix.libgen
• posix.poll
• posix.pwd
• posix.sched
• posix.signal
• posix.stdio
• posix.stdlib
• posix.sys.msg
• posix.sys.resource
• posix.sys.socket
• posix.sys.stat
• posix.sys.statvfs
• posix.sys.time
• posix.sys.times
• posix.sys.utsname
• posix.sys.wait
• posix.syslog
• posix.termio
• posix.time
• posix.unistd
• posix.utime

Examples

• abstract-ns-client.lua
• abstract-ns-server.lua
• dir.lua
• dup2.lua
• fork.lua
• fork2.lua
• getopt.lua
• glob.lua
• limit.lua
• lock.lua
• netlink-uevent.lua
• packet-socket.lua
• ping.lua
• poll.lua
• rt_sched.lua
• signal.lua
• socket.lua
• termios.lua
• tree.lua

Module posix.syslog

Control System Log.

Functions

LOG_MASK (priority)	Mask bit for given log priority.
closelog ()	Close system log.
openlog (ident[, option[, facility=`LOG_USER`]])	Open the system logger.
setlogmask (mask)	Set log priority mask.
syslog (priority, message)	Write to the system logger.

Constants

posix.syslog

System logging constants.

Functions

LOG_MASK (priority)

Mask bit for given log priority.

Parameters:

• priority int one of LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_WARNING, LOG_NOTICE, LOG_INFO or LOG_DEBUG

Returns:

int mask bit corresponding to priority

See also:

setlogmask(3)

closelog ()

Close system log.

See also:

closelog(3)

openlog (ident[, option[, facility=`LOG_USER`]])

Open the system logger.

Parameters:

• ident string all messages will start with this
• option int bitwise OR of zero or more of LOG_CONS, LOG_NDELAY, or LOG_PID (optional)
• facility int one of LOG_AUTH, LOG_CRON, LOG_DAEMON, LOG_KERN, LOG_LPR, LOG_MAIL, LOG_NEWS, LOG_SECURITY, LOG_USER, LOG_UUCP or LOG_LOCAL0 through LOG_LOCAL7 (default `LOG_USER`)

See also:

openlog(3)

setlogmask (mask)

Set log priority mask.

Parameters:

• mask int bitwise OR of LOG_MASK bits.

Returns:

int previous mask, if successful

Or

1. nil
2. string error message
3. int errnum

See also:

setlogmask(3)

syslog (priority, message)

Write to the system logger.

Parameters:

• priority int one of LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_WARNING, LOG_NOTICE, LOG_INFO or LOG_DEBUG
• message string log message

See also:

syslog(3)

Constants

posix.syslog

System logging constants. Any constants not available in the underlying system will be nil valued.

Fields:

• LOG_AUTH int security/authorisation messages
• LOG_CONS int write directly to system console
• LOG_CRON int clock daemon
• LOG_DAEMON int system daemons
• LOG_KERN int kernel messages
• LOG_LOCAL0 int reserved for local use
• LOG_LOCAL1 int reserved for local use
• LOG_LOCAL2 int reserved for local use
• LOG_LOCAL3 int reserved for local use
• LOG_LOCAL4 int reserved for local use
• LOG_LOCAL5 int reserved for local use
• LOG_LOCAL6 int reserved for local use
• LOG_LOCAL7 int reserved for local use
• LOG_LPR int line printer subsystem
• LOG_MAIL int mail system
• LOG_NDELAY int open the connection immediately
• LOG_NEWS int network news subsystem
• LOG_PID int include process id with each log message
• LOG_USER int random user-level messages
• LOG_UUCP int unix-to-unix copy subsystem
• LOG_EMERG int system is unusable
• LOG_ALERT int action must be taken immediately
• LOG_CRIT int critical conditions
• LOG_ERR int error conditions
• LOG_WARNING int warning conditions
• LOG_NOTICE int normal but significant conditions
• LOG_INFO int informational
• LOG_DEBUG int debug-level messages

Usage:

-- Print syslog constants supported on this host.
for name, value in pairs (require "posix.syslog") do
  if type (value) == "number" then
    print (name, value)
   end
end