| 1 | # |
| 2 | # For a description of the syntax of this configuration file, |
| 3 | # see scripts/kbuild/config-language.txt. |
| 4 | # |
| 5 | |
| 6 | menu "Busybox Library Tuning" |
| 7 | |
| 8 | config BUSYBOX_CONFIG_PASSWORD_MINLEN |
| 9 | int "Minimum password length" |
| 10 | default 6 |
| 11 | range 5 32 |
| 12 | help |
| 13 | Minimum allowable password length. |
| 14 | |
| 15 | config BUSYBOX_CONFIG_MD5_SIZE_VS_SPEED |
| 16 | int "MD5: Trade bytes for speed (0:fast, 3:slow)" |
| 17 | default 2 |
| 18 | range 0 3 |
| 19 | help |
| 20 | Trade binary size versus speed for the md5sum algorithm. |
| 21 | Approximate values running uClibc and hashing |
| 22 | linux-2.4.4.tar.bz2 were: |
| 23 | user times (sec) text size (386) |
| 24 | 0 (fastest) 1.1 6144 |
| 25 | 1 1.4 5392 |
| 26 | 2 3.0 5088 |
| 27 | 3 (smallest) 5.1 4912 |
| 28 | |
| 29 | config BUSYBOX_CONFIG_FEATURE_FAST_TOP |
| 30 | bool "Faster /proc scanning code (+100 bytes)" |
| 31 | default y |
| 32 | help |
| 33 | This option makes top (and ps) ~20% faster (or 20% less CPU hungry), |
| 34 | but code size is slightly bigger. |
| 35 | |
| 36 | config BUSYBOX_CONFIG_FEATURE_ETC_NETWORKS |
| 37 | bool "Support for /etc/networks" |
| 38 | default n |
| 39 | help |
| 40 | Enable support for network names in /etc/networks. This is |
| 41 | a rarely used feature which allows you to use names |
| 42 | instead of IP/mask pairs in route command. |
| 43 | |
| 44 | config BUSYBOX_CONFIG_FEATURE_USE_TERMIOS |
| 45 | bool "Use termios to manipulate the screen" |
| 46 | default n |
| 47 | depends on BUSYBOX_CONFIG_MORE || BUSYBOX_CONFIG_TOP || BUSYBOX_CONFIG_POWERTOP |
| 48 | help |
| 49 | This option allows utilities such as 'more' and 'top' to determine |
| 50 | the size of the screen. If you leave this disabled, your utilities |
| 51 | that display things on the screen will be especially primitive and |
| 52 | will be unable to determine the current screen size, and will be |
| 53 | unable to move the cursor. |
| 54 | |
| 55 | config BUSYBOX_CONFIG_FEATURE_EDITING |
| 56 | bool "Command line editing" |
| 57 | default y |
| 58 | help |
| 59 | Enable line editing (mainly for shell command line). |
| 60 | |
| 61 | config BUSYBOX_CONFIG_FEATURE_EDITING_MAX_LEN |
| 62 | int "Maximum length of input" |
| 63 | range 128 8192 |
| 64 | default 512 |
| 65 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 66 | help |
| 67 | Line editing code uses on-stack buffers for storage. |
| 68 | You may want to decrease this parameter if your target machine |
| 69 | benefits from smaller stack usage. |
| 70 | |
| 71 | config BUSYBOX_CONFIG_FEATURE_EDITING_VI |
| 72 | bool "vi-style line editing commands" |
| 73 | default n |
| 74 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 75 | help |
| 76 | Enable vi-style line editing. In shells, this mode can be |
| 77 | turned on and off with "set -o vi" and "set +o vi". |
| 78 | |
| 79 | config BUSYBOX_CONFIG_FEATURE_EDITING_HISTORY |
| 80 | int "History size" |
| 81 | range 0 99999 |
| 82 | default 256 |
| 83 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 84 | help |
| 85 | Specify command history size. |
| 86 | |
| 87 | config BUSYBOX_CONFIG_FEATURE_EDITING_SAVEHISTORY |
| 88 | bool "History saving" |
| 89 | default n |
| 90 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 91 | help |
| 92 | Enable history saving in shells. |
| 93 | |
| 94 | config BUSYBOX_CONFIG_FEATURE_REVERSE_SEARCH |
| 95 | bool "Reverse history search" |
| 96 | default n |
| 97 | depends on BUSYBOX_CONFIG_FEATURE_EDITING_SAVEHISTORY |
| 98 | help |
| 99 | Enable readline-like Ctrl-R combination for reverse history search. |
| 100 | Increases code by about 0.5k. |
| 101 | |
| 102 | config BUSYBOX_CONFIG_FEATURE_TAB_COMPLETION |
| 103 | bool "Tab completion" |
| 104 | default y |
| 105 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 106 | help |
| 107 | Enable tab completion. |
| 108 | |
| 109 | config BUSYBOX_CONFIG_FEATURE_USERNAME_COMPLETION |
| 110 | bool "Username completion" |
| 111 | default n |
| 112 | depends on BUSYBOX_CONFIG_FEATURE_TAB_COMPLETION |
| 113 | help |
| 114 | Enable username completion. |
| 115 | |
| 116 | config BUSYBOX_CONFIG_FEATURE_EDITING_FANCY_PROMPT |
| 117 | bool "Fancy shell prompts" |
| 118 | default y |
| 119 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 120 | help |
| 121 | Setting this option allows for prompts to use things like \w and |
| 122 | \$ and escape codes. |
| 123 | |
| 124 | config BUSYBOX_CONFIG_FEATURE_EDITING_ASK_TERMINAL |
| 125 | bool "Query cursor position from terminal" |
| 126 | default n |
| 127 | depends on BUSYBOX_CONFIG_FEATURE_EDITING |
| 128 | help |
| 129 | Allow usage of "ESC [ 6 n" sequence. Terminal answers back with |
| 130 | current cursor position. This information is used to make line |
| 131 | editing more robust in some cases. |
| 132 | If you are not sure whether your terminals respond to this code |
| 133 | correctly, or want to save on code size (about 400 bytes), |
| 134 | then do not turn this option on. |
| 135 | |
| 136 | config BUSYBOX_CONFIG_FEATURE_NON_POSIX_CP |
| 137 | bool "Non-POSIX, but safer, copying to special nodes" |
| 138 | default y |
| 139 | help |
| 140 | With this option, "cp file symlink" will delete symlink |
| 141 | and create a regular file. This does not conform to POSIX, |
| 142 | but prevents a symlink attack. |
| 143 | Similarly, "cp file device" will not send file's data |
| 144 | to the device. |
| 145 | |
| 146 | config BUSYBOX_CONFIG_FEATURE_VERBOSE_CP_MESSAGE |
| 147 | bool "Give more precise messages when copy fails (cp, mv etc)" |
| 148 | default n |
| 149 | help |
| 150 | Error messages with this feature enabled: |
| 151 | $ cp file /does_not_exist/file |
| 152 | cp: cannot create '/does_not_exist/file': Path does not exist |
| 153 | $ cp file /vmlinuz/file |
| 154 | cp: cannot stat '/vmlinuz/file': Path has non-directory component |
| 155 | If this feature is not enabled, they will be, respectively: |
| 156 | cp: cannot create '/does_not_exist/file': No such file or directory |
| 157 | cp: cannot stat '/vmlinuz/file': Not a directory |
| 158 | This will cost you ~60 bytes. |
| 159 | |
| 160 | config BUSYBOX_CONFIG_FEATURE_COPYBUF_KB |
| 161 | int "Copy buffer size, in kilobytes" |
| 162 | range 1 1024 |
| 163 | default 4 |
| 164 | help |
| 165 | Size of buffer used by cp, mv, install etc. |
| 166 | Buffers which are 4 kb or less will be allocated on stack. |
| 167 | Bigger buffers will be allocated with mmap, with fallback to 4 kb |
| 168 | stack buffer if mmap fails. |
| 169 | |
| 170 | config BUSYBOX_CONFIG_MONOTONIC_SYSCALL |
| 171 | bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" |
| 172 | default n |
| 173 | depends on BUSYBOX_CONFIG_PLATFORM_LINUX |
| 174 | help |
| 175 | Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring |
| 176 | time intervals (time, ping, traceroute etc need this). |
| 177 | Probably requires Linux 2.6+. If not selected, gettimeofday |
| 178 | will be used instead (which gives wrong results if date/time |
| 179 | is reset). |
| 180 | |
| 181 | config BUSYBOX_CONFIG_IOCTL_HEX2STR_ERROR |
| 182 | bool "Use ioctl names rather than hex values in error messages" |
| 183 | default y |
| 184 | help |
| 185 | Use ioctl names rather than hex values in error messages |
| 186 | (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this |
| 187 | saves about 1400 bytes. |
| 188 | |
| 189 | config BUSYBOX_CONFIG_FEATURE_HWIB |
| 190 | bool "Support infiniband HW" |
| 191 | default n |
| 192 | help |
| 193 | Support for printing infiniband addresses in |
| 194 | network applets. |
| 195 | |
| 196 | endmenu |
| 197 | |
