| # |
| # For a description of the syntax of this configuration file, |
| # see scripts/kbuild/config-language.txt. |
| # |
| |
| menu "System Logging Utilities" |
| |
| INSERT |
| |
| config SYSLOGD |
| bool "syslogd" |
| default y |
| help |
| The syslogd utility is used to record logs of all the |
| significant events that occur on a system. Every |
| message that is logged records the date and time of the |
| event, and will generally also record the name of the |
| application that generated the message. When used in |
| conjunction with klogd, messages from the Linux kernel |
| can also be recorded. This is terribly useful, |
| especially for finding what happened when something goes |
| wrong. And something almost always will go wrong if |
| you wait long enough.... |
| |
| config FEATURE_ROTATE_LOGFILE |
| bool "Rotate message files" |
| default y |
| depends on SYSLOGD |
| help |
| This enables syslogd to rotate the message files |
| on his own. No need to use an external rotatescript. |
| |
| config FEATURE_REMOTE_LOG |
| bool "Remote Log support" |
| default y |
| depends on SYSLOGD |
| help |
| When you enable this feature, the syslogd utility can |
| be used to send system log messages to another system |
| connected via a network. This allows the remote |
| machine to log all the system messages, which can be |
| terribly useful for reducing the number of serial |
| cables you use. It can also be a very good security |
| measure to prevent system logs from being tampered with |
| by an intruder. |
| |
| config FEATURE_SYSLOGD_DUP |
| bool "Support -D (drop dups) option" |
| default y |
| depends on SYSLOGD |
| help |
| Option -D instructs syslogd to drop consecutive messages |
| which are totally the same. |
| |
| config FEATURE_SYSLOGD_CFG |
| bool "Support syslog.conf" |
| default y |
| depends on SYSLOGD |
| help |
| Supports restricted syslogd config. See docs/syslog.conf.txt |
| |
| config FEATURE_SYSLOGD_READ_BUFFER_SIZE |
| int "Read buffer size in bytes" |
| default 256 |
| range 256 20000 |
| depends on SYSLOGD |
| help |
| This option sets the size of the syslog read buffer. |
| Actual memory usage increases around five times the |
| change done here. |
| |
| config FEATURE_IPC_SYSLOG |
| bool "Circular Buffer support" |
| default y |
| depends on SYSLOGD |
| help |
| When you enable this feature, the syslogd utility will |
| use a circular buffer to record system log messages. |
| When the buffer is filled it will continue to overwrite |
| the oldest messages. This can be very useful for |
| systems with little or no permanent storage, since |
| otherwise system logs can eventually fill up your |
| entire filesystem, which may cause your system to |
| break badly. |
| |
| config FEATURE_IPC_SYSLOG_BUFFER_SIZE |
| int "Circular buffer size in Kbytes (minimum 4KB)" |
| default 16 |
| range 4 2147483647 |
| depends on FEATURE_IPC_SYSLOG |
| help |
| This option sets the size of the circular buffer |
| used to record system log messages. |
| |
| config LOGREAD |
| bool "logread" |
| default y |
| depends on FEATURE_IPC_SYSLOG |
| help |
| If you enabled Circular Buffer support, you almost |
| certainly want to enable this feature as well. This |
| utility will allow you to read the messages that are |
| stored in the syslogd circular buffer. |
| |
| config FEATURE_LOGREAD_REDUCED_LOCKING |
| bool "Double buffering" |
| default y |
| depends on LOGREAD |
| help |
| 'logread' ouput to slow serial terminals can have |
| side effects on syslog because of the semaphore. |
| This option make logread to double buffer copy |
| from circular buffer, minimizing semaphore |
| contention at some minor memory expense. |
| |
| config FEATURE_KMSG_SYSLOG |
| bool "Linux kernel printk buffer support" |
| default y |
| depends on SYSLOGD |
| select PLATFORM_LINUX |
| help |
| When you enable this feature, the syslogd utility will |
| write system log message to the Linux kernel's printk buffer. |
| This can be used as a smaller alternative to the syslogd IPC |
| support, as klogd and logread aren't needed. |
| |
| NOTICE: Syslog facilities in log entries needs kernel 3.5+. |
| |
| config KLOGD |
| bool "klogd" |
| default y |
| help |
| klogd is a utility which intercepts and logs all |
| messages from the Linux kernel and sends the messages |
| out to the 'syslogd' utility so they can be logged. If |
| you wish to record the messages produced by the kernel, |
| you should enable this option. |
| |
| comment "klogd should not be used together with syslog to kernel printk buffer" |
| depends on KLOGD && FEATURE_KMSG_SYSLOG |
| |
| config FEATURE_KLOGD_KLOGCTL |
| bool "Use the klogctl() interface" |
| default y |
| depends on KLOGD |
| select PLATFORM_LINUX |
| help |
| The klogd applet supports two interfaces for reading |
| kernel messages. Linux provides the klogctl() interface |
| which allows reading messages from the kernel ring buffer |
| independently from the file system. |
| |
| If you answer 'N' here, klogd will use the more portable |
| approach of reading them from /proc or a device node. |
| However, this method requires the file to be available. |
| |
| If in doubt, say 'Y'. |
| |
| config LOGGER |
| bool "logger" |
| default y |
| select FEATURE_SYSLOG |
| help |
| The logger utility allows you to send arbitrary text |
| messages to the system log (i.e. the 'syslogd' utility) so |
| they can be logged. This is generally used to help locate |
| problems that occur within programs and scripts. |
| |
| endmenu |