2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "System Logging Utilities"
12 The syslogd utility is used to record logs of all the
13 significant events that occur on a system. Every
14 message that is logged records the date and time of the
15 event, and will generally also record the name of the
16 application that generated the message. When used in
17 conjunction with klogd, messages from the Linux kernel
18 can also be recorded. This is terribly useful,
19 especially for finding what happened when something goes
20 wrong. And something almost always will go wrong if
21 you wait long enough....
23 config FEATURE_ROTATE_LOGFILE
24 bool "Rotate message files"
28 This enables syslogd to rotate the message files
29 on his own. No need to use an external rotatescript.
31 config FEATURE_REMOTE_LOG
32 bool "Remote Log support"
36 When you enable this feature, the syslogd utility can
37 be used to send system log messages to another system
38 connected via a network. This allows the remote
39 machine to log all the system messages, which can be
40 terribly useful for reducing the number of serial
41 cables you use. It can also be a very good security
42 measure to prevent system logs from being tampered with
45 config FEATURE_SYSLOGD_DUP
46 bool "Support -D (drop dups) option"
50 Option -D instructs syslogd to drop consecutive messages
51 which are totally the same.
53 config FEATURE_IPC_SYSLOG
54 bool "Circular Buffer support"
58 When you enable this feature, the syslogd utility will
59 use a circular buffer to record system log messages.
60 When the buffer is filled it will continue to overwrite
61 the oldest messages. This can be very useful for
62 systems with little or no permanent storage, since
63 otherwise system logs can eventually fill up your
64 entire filesystem, which may cause your system to
67 config FEATURE_IPC_SYSLOG_BUFFER_SIZE
68 int "Circular buffer size in Kbytes (minimum 4KB)"
71 depends on FEATURE_IPC_SYSLOG
73 This option sets the size of the circular buffer
74 used to record system log messages.
79 depends on FEATURE_IPC_SYSLOG
81 If you enabled Circular Buffer support, you almost
82 certainly want to enable this feature as well. This
83 utility will allow you to read the messages that are
84 stored in the syslogd circular buffer.
86 config FEATURE_LOGREAD_REDUCED_LOCKING
87 bool "Double buffering"
91 'logread' ouput to slow serial terminals can have
92 side effects on syslog because of the semaphore.
93 This option make logread to double buffer copy
94 from circular buffer, minimizing semaphore
95 contention at some minor memory expense.
101 klogd is a utility which intercepts and logs all
102 messages from the Linux kernel and sends the messages
103 out to the 'syslogd' utility so they can be logged. If
104 you wish to record the messages produced by the kernel,
105 you should enable this option.
110 select FEATURE_SYSLOG
112 The logger utility allows you to send arbitrary text
113 messages to the system log (i.e. the 'syslogd' utility) so
114 they can be logged. This is generally used to help locate
115 problems that occur within programs and scripts.