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Rob Landley5cf7c2d2006-02-21 06:44:43 +00001#
2# For a description of the syntax of this configuration file,
3# see scripts/kbuild/config-language.txt.
4#
5
6menu "Busybox Library Tuning"
7
Denys Vlasenkod70e0e92010-06-08 12:15:11 +02008INSERT
9
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000010config PASSWORD_MINLEN
"Robert P. J. Day"087b9d62006-07-02 18:35:39 +000011 int "Minimum password length"
12 default 6
13 range 5 32
14 help
15 Minimum allowable password length.
16
Denis Vlasenko7d219aa2006-10-05 10:17:08 +000017config MD5_SIZE_VS_SPEED
Denys Vlasenko7e7e08f2009-07-06 23:24:20 +020018 int "MD5: Trade bytes for speed (0:fast, 3:slow)"
Rob Landley5cf7c2d2006-02-21 06:44:43 +000019 default 2
20 range 0 3
21 help
22 Trade binary size versus speed for the md5sum algorithm.
23 Approximate values running uClibc and hashing
24 linux-2.4.4.tar.bz2 were:
25 user times (sec) text size (386)
26 0 (fastest) 1.1 6144
27 1 1.4 5392
28 2 3.0 5088
29 3 (smallest) 5.1 4912
30
Denis Vlasenko3afac4c2007-06-19 13:46:24 +000031config FEATURE_FAST_TOP
32 bool "Faster /proc scanning code (+100 bytes)"
Denys Vlasenko2f32bf82010-06-06 04:14:28 +020033 default y
Denis Vlasenko3afac4c2007-06-19 13:46:24 +000034 help
35 This option makes top (and ps) ~20% faster (or 20% less CPU hungry),
36 but code size is slightly bigger.
37
Denis Vlasenkoa61cb922007-06-19 11:24:47 +000038config FEATURE_ETC_NETWORKS
39 bool "Support for /etc/networks"
40 default n
41 help
42 Enable support for network names in /etc/networks. This is
43 a rarely used feature which allows you to use names
44 instead of IP/mask pairs in route command.
45
Marek Polacekb507cc32010-10-25 03:44:34 +020046config FEATURE_USE_TERMIOS
47 bool "Use termios to manipulate the screen"
48 default y
49 depends on MORE || TOP || POWERTOP
50 help
51 This option allows utilities such as 'more' and 'top' to determine
52 the size of the screen. If you leave this disabled, your utilities
53 that display things on the screen will be especially primitive and
54 will be unable to determine the current screen size, and will be
55 unable to move the cursor.
56
Denis Vlasenko38f63192007-01-22 09:03:07 +000057config FEATURE_EDITING
58 bool "Command line editing"
Denys Vlasenko2f32bf82010-06-06 04:14:28 +020059 default y
Denis Vlasenko38f63192007-01-22 09:03:07 +000060 help
Denis Vlasenkoe8a07882007-06-10 15:08:44 +000061 Enable line editing (mainly for shell command line).
62
63config FEATURE_EDITING_MAX_LEN
64 int "Maximum length of input"
65 range 128 8192
66 default 1024
67 depends on FEATURE_EDITING
68 help
69 Line editing code uses on-stack buffers for storage.
70 You may want to decrease this parameter if your target machine
71 benefits from smaller stack usage.
Denis Vlasenko38f63192007-01-22 09:03:07 +000072
Denis Vlasenko38f63192007-01-22 09:03:07 +000073config FEATURE_EDITING_VI
74 bool "vi-style line editing commands"
75 default n
76 depends on FEATURE_EDITING
77 help
Bernhard Reutner-Fischer3e8669f2008-07-22 18:27:53 +000078 Enable vi-style line editing. In shells, this mode can be
Denis Vlasenko38f63192007-01-22 09:03:07 +000079 turned on and off with "set -o vi" and "set +o vi".
80
81config FEATURE_EDITING_HISTORY
82 int "History size"
83 range 0 99999
Denys Vlasenko2f32bf82010-06-06 04:14:28 +020084 default 255
Denis Vlasenko38f63192007-01-22 09:03:07 +000085 depends on FEATURE_EDITING
86 help
87 Specify command history size.
88
89config FEATURE_EDITING_SAVEHISTORY
90 bool "History saving"
Denys Vlasenko2f32bf82010-06-06 04:14:28 +020091 default y
Denys Vlasenko99862cb2010-09-12 17:34:13 +020092 depends on FEATURE_EDITING
Denis Vlasenko38f63192007-01-22 09:03:07 +000093 help
Denys Vlasenko99862cb2010-09-12 17:34:13 +020094 Enable history saving in shells.
Denis Vlasenko38f63192007-01-22 09:03:07 +000095
96config FEATURE_TAB_COMPLETION
97 bool "Tab completion"
Denys Vlasenko2f32bf82010-06-06 04:14:28 +020098 default y
Denis Vlasenko38f63192007-01-22 09:03:07 +000099 depends on FEATURE_EDITING
100 help
101 Enable tab completion.
102
103config FEATURE_USERNAME_COMPLETION
104 bool "Username completion"
105 default n
106 depends on FEATURE_TAB_COMPLETION
107 help
108 Enable username completion.
109
110config FEATURE_EDITING_FANCY_PROMPT
111 bool "Fancy shell prompts"
Denys Vlasenko5d26df62010-07-16 15:31:38 +0200112 default y
Denis Vlasenko38f63192007-01-22 09:03:07 +0000113 depends on FEATURE_EDITING
114 help
115 Setting this option allows for prompts to use things like \w and
116 \$ and escape codes.
117
Denys Vlasenko020f4062009-05-17 16:44:54 +0200118config FEATURE_EDITING_ASK_TERMINAL
119 bool "Query cursor position from terminal"
120 default n
121 depends on FEATURE_EDITING
122 help
123 Allow usage of "ESC [ 6 n" sequence. Terminal answers back with
124 current cursor position. This information is used to make line
125 editing more robust in some cases.
126 If you are not sure whether your terminals respond to this code
Denys Vlasenkod83bbf42009-10-27 10:47:49 +0100127 correctly, or want to save on code size (about 400 bytes),
Denys Vlasenko020f4062009-05-17 16:44:54 +0200128 then do not turn this option on.
129
Denys Vlasenko2d7b5bf2009-07-05 12:49:29 +0200130config FEATURE_NON_POSIX_CP
131 bool "Non-POSIX, but safer, copying to special nodes"
132 default y
133 help
134 With this option, "cp file symlink" will delete symlink
135 and create a regular file. This does not conform to POSIX,
136 but prevents a symlink attack.
137 Similarly, "cp file device" will not send file's data
138 to the device.
139
Denis Vlasenkod5fe8802008-02-13 16:52:00 +0000140config FEATURE_VERBOSE_CP_MESSAGE
141 bool "Give more precise messages when copy fails (cp, mv etc)"
142 default n
143 help
144 Error messages with this feature enabled:
145 $ cp file /does_not_exist/file
146 cp: cannot create '/does_not_exist/file': Path does not exist
147 $ cp file /vmlinuz/file
148 cp: cannot stat '/vmlinuz/file': Path has non-directory component
149 If this feature is not enabled, they will be, respectively:
Denys Vlasenkoa68bd4b2009-10-14 11:52:01 +0200150 cp: cannot create '/does_not_exist/file': No such file or directory
Denis Vlasenkod5fe8802008-02-13 16:52:00 +0000151 cp: cannot stat '/vmlinuz/file': Not a directory
Denis Vlasenkod5fe8802008-02-13 16:52:00 +0000152 This will cost you ~60 bytes.
153
Denis Vlasenko4c139222007-12-02 03:27:42 +0000154config FEATURE_COPYBUF_KB
155 int "Copy buffer size, in kilobytes"
156 range 1 1024
157 default 4
158 help
159 Size of buffer used by cp, mv, install etc.
160 Buffers which are 4 kb or less will be allocated on stack.
161 Bigger buffers will be allocated with mmap, with fallback to 4 kb
162 stack buffer if mmap fails.
163
Denis Vlasenko459be352007-06-17 19:09:05 +0000164config MONOTONIC_SYSCALL
165 bool "Use clock_gettime(CLOCK_MONOTONIC) syscall"
Denys Vlasenko2f32bf82010-06-06 04:14:28 +0200166 default n
Jeremie Koenig1d7266d2010-07-19 00:44:56 +0200167 depends on PLATFORM_LINUX
Denis Vlasenko459be352007-06-17 19:09:05 +0000168 help
169 Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring
170 time intervals (time, ping, traceroute etc need this).
171 Probably requires Linux 2.6+. If not selected, gettimeofday
172 will be used instead (which gives wrong results if date/time
173 is reset).
174
Denis Vlasenkofb79a2e2007-07-14 22:07:14 +0000175config IOCTL_HEX2STR_ERROR
176 bool "Use ioctl names rather than hex values in error messages"
177 default y
178 help
179 Use ioctl names rather than hex values in error messages
180 (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this
181 saves about 1400 bytes.
Bernhard Reutner-Fischerf3b778a2008-05-16 16:10:31 +0000182
183config FEATURE_HWIB
184 bool "Support infiniband HW"
185 default y
186 help
187 Support for printing infiniband addresses in
188 network applets.
Denys Vlasenkobcbd37d2009-06-18 13:23:58 +0200189
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000190endmenu