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192.168.1.100 / T106_DC / df7f8babc2c13f7adf53ff8e17580ae47c0e07bf / . / ap / app / busybox / src / sysklogd / Config.src
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lh9ed821d2023-04-07 01:36:19 -0700[diff] [blame]1#
2# For a description of the syntax of this configuration file,
3# see scripts/kbuild/config-language.txt.
4#
5
6menu "System Logging Utilities"
7
8INSERT
9
10config SYSLOGD
11 bool "syslogd"
12 default y
13 help
14 The syslogd utility is used to record logs of all the
15 significant events that occur on a system. Every
16 message that is logged records the date and time of the
17 event, and will generally also record the name of the
18 application that generated the message. When used in
19 conjunction with klogd, messages from the Linux kernel
20 can also be recorded. This is terribly useful,
21 especially for finding what happened when something goes
22 wrong. And something almost always will go wrong if
23 you wait long enough....
24
25config FEATURE_ROTATE_LOGFILE
26 bool "Rotate message files"
27 default y
28 depends on SYSLOGD
29 help
30 This enables syslogd to rotate the message files
31 on his own. No need to use an external rotatescript.
32
33config FEATURE_REMOTE_LOG
34 bool "Remote Log support"
35 default y
36 depends on SYSLOGD
37 help
38 When you enable this feature, the syslogd utility can
39 be used to send system log messages to another system
40 connected via a network. This allows the remote
41 machine to log all the system messages, which can be
42 terribly useful for reducing the number of serial
43 cables you use. It can also be a very good security
44 measure to prevent system logs from being tampered with
45 by an intruder.
46
47config FEATURE_SYSLOGD_DUP
48 bool "Support -D (drop dups) option"
49 default y
50 depends on SYSLOGD
51 help
52 Option -D instructs syslogd to drop consecutive messages
53 which are totally the same.
54
55config FEATURE_SYSLOGD_CFG
56 bool "Support syslog.conf"
57 default y
58 depends on SYSLOGD
59 help
60 Supports restricted syslogd config. See docs/syslog.conf.txt
61
62config FEATURE_SYSLOGD_READ_BUFFER_SIZE
63 int "Read buffer size in bytes"
64 default 256
65 range 256 20000
66 depends on SYSLOGD
67 help
68 This option sets the size of the syslog read buffer.
69 Actual memory usage increases around five times the
70 change done here.
71
72config FEATURE_IPC_SYSLOG
73 bool "Circular Buffer support"
74 default y
75 depends on SYSLOGD
76 help
77 When you enable this feature, the syslogd utility will
78 use a circular buffer to record system log messages.
79 When the buffer is filled it will continue to overwrite
80 the oldest messages. This can be very useful for
81 systems with little or no permanent storage, since
82 otherwise system logs can eventually fill up your
83 entire filesystem, which may cause your system to
84 break badly.
85
86config FEATURE_IPC_SYSLOG_BUFFER_SIZE
87 int "Circular buffer size in Kbytes (minimum 4KB)"
88 default 16
89 range 4 2147483647
90 depends on FEATURE_IPC_SYSLOG
91 help
92 This option sets the size of the circular buffer
93 used to record system log messages.
94
95config LOGREAD
96 bool "logread"
97 default y
98 depends on FEATURE_IPC_SYSLOG
99 help
100 If you enabled Circular Buffer support, you almost
101 certainly want to enable this feature as well. This
102 utility will allow you to read the messages that are
103 stored in the syslogd circular buffer.
104
105config FEATURE_LOGREAD_REDUCED_LOCKING
106 bool "Double buffering"
107 default y
108 depends on LOGREAD
109 help
110 'logread' ouput to slow serial terminals can have
111 side effects on syslog because of the semaphore.
112 This option make logread to double buffer copy
113 from circular buffer, minimizing semaphore
114 contention at some minor memory expense.
115
116config FEATURE_KMSG_SYSLOG
117 bool "Linux kernel printk buffer support"
118 default y
119 depends on SYSLOGD
120 select PLATFORM_LINUX
121 help
122 When you enable this feature, the syslogd utility will
123 write system log message to the Linux kernel's printk buffer.
124 This can be used as a smaller alternative to the syslogd IPC
125 support, as klogd and logread aren't needed.
126
127 NOTICE: Syslog facilities in log entries needs kernel 3.5+.
128
129config KLOGD
130 bool "klogd"
131 default y
132 help
133 klogd is a utility which intercepts and logs all
134 messages from the Linux kernel and sends the messages
135 out to the 'syslogd' utility so they can be logged. If
136 you wish to record the messages produced by the kernel,
137 you should enable this option.
138
139comment "klogd should not be used together with syslog to kernel printk buffer"
140 depends on KLOGD && FEATURE_KMSG_SYSLOG
141
142config FEATURE_KLOGD_KLOGCTL
143 bool "Use the klogctl() interface"
144 default y
145 depends on KLOGD
146 select PLATFORM_LINUX
147 help
148 The klogd applet supports two interfaces for reading
149 kernel messages. Linux provides the klogctl() interface
150 which allows reading messages from the kernel ring buffer
151 independently from the file system.
152
153 If you answer 'N' here, klogd will use the more portable
154 approach of reading them from /proc or a device node.
155 However, this method requires the file to be available.
156
157 If in doubt, say 'Y'.
158
159config LOGGER
160 bool "logger"
161 default y
162 select FEATURE_SYSLOG
163 help
164 The logger utility allows you to send arbitrary text
165 messages to the system log (i.e. the 'syslogd' utility) so
166 they can be logged. This is generally used to help locate
167 problems that occur within programs and scripts.
168
169endmenu