2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Busybox Library Tuning"
10 config PASSWORD_MINLEN
11 int "Minimum password length"
15 Minimum allowable password length.
17 config MD5_SIZE_VS_SPEED
18 int "MD5: Trade bytes for speed (0:fast, 3:slow)"
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)
31 config FEATURE_FAST_TOP
32 bool "Faster /proc scanning code (+100 bytes)"
35 This option makes top (and ps) ~20% faster (or 20% less CPU hungry),
36 but code size is slightly bigger.
38 config FEATURE_ETC_NETWORKS
39 bool "Support for /etc/networks"
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.
46 config FEATURE_EDITING
47 bool "Command line editing"
50 Enable line editing (mainly for shell command line).
52 config FEATURE_EDITING_MAX_LEN
53 int "Maximum length of input"
56 depends on FEATURE_EDITING
58 Line editing code uses on-stack buffers for storage.
59 You may want to decrease this parameter if your target machine
60 benefits from smaller stack usage.
62 config FEATURE_EDITING_VI
63 bool "vi-style line editing commands"
65 depends on FEATURE_EDITING
67 Enable vi-style line editing. In shells, this mode can be
68 turned on and off with "set -o vi" and "set +o vi".
70 config FEATURE_EDITING_HISTORY
74 depends on FEATURE_EDITING
76 Specify command history size.
78 config FEATURE_EDITING_SAVEHISTORY
81 depends on ASH && FEATURE_EDITING
83 Enable history saving in ash shell.
85 config FEATURE_TAB_COMPLETION
88 depends on FEATURE_EDITING
90 Enable tab completion.
92 config FEATURE_USERNAME_COMPLETION
93 bool "Username completion"
95 depends on FEATURE_TAB_COMPLETION
97 Enable username completion.
99 config FEATURE_EDITING_FANCY_PROMPT
100 bool "Fancy shell prompts"
102 depends on FEATURE_EDITING
104 Setting this option allows for prompts to use things like \w and
107 config FEATURE_EDITING_ASK_TERMINAL
108 bool "Query cursor position from terminal"
110 depends on FEATURE_EDITING
112 Allow usage of "ESC [ 6 n" sequence. Terminal answers back with
113 current cursor position. This information is used to make line
114 editing more robust in some cases.
115 If you are not sure whether your terminals respond to this code
116 correctly, or want to save on code size (about 400 bytes),
117 then do not turn this option on.
119 config FEATURE_NON_POSIX_CP
120 bool "Non-POSIX, but safer, copying to special nodes"
123 With this option, "cp file symlink" will delete symlink
124 and create a regular file. This does not conform to POSIX,
125 but prevents a symlink attack.
126 Similarly, "cp file device" will not send file's data
129 config FEATURE_VERBOSE_CP_MESSAGE
130 bool "Give more precise messages when copy fails (cp, mv etc)"
133 Error messages with this feature enabled:
134 $ cp file /does_not_exist/file
135 cp: cannot create '/does_not_exist/file': Path does not exist
136 $ cp file /vmlinuz/file
137 cp: cannot stat '/vmlinuz/file': Path has non-directory component
138 If this feature is not enabled, they will be, respectively:
139 cp: cannot create '/does_not_exist/file': No such file or directory
140 cp: cannot stat '/vmlinuz/file': Not a directory
141 This will cost you ~60 bytes.
143 config FEATURE_COPYBUF_KB
144 int "Copy buffer size, in kilobytes"
148 Size of buffer used by cp, mv, install etc.
149 Buffers which are 4 kb or less will be allocated on stack.
150 Bigger buffers will be allocated with mmap, with fallback to 4 kb
151 stack buffer if mmap fails.
153 config MONOTONIC_SYSCALL
154 bool "Use clock_gettime(CLOCK_MONOTONIC) syscall"
157 Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring
158 time intervals (time, ping, traceroute etc need this).
159 Probably requires Linux 2.6+. If not selected, gettimeofday
160 will be used instead (which gives wrong results if date/time
163 config IOCTL_HEX2STR_ERROR
164 bool "Use ioctl names rather than hex values in error messages"
167 Use ioctl names rather than hex values in error messages
168 (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this
169 saves about 1400 bytes.
172 bool "Support infiniband HW"
175 Support for printing infiniband addresses in