package/busybox/config/modutils/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6 menu "Linux Module Utilities"
   7
   8 config BUSYBOX_CONFIG_MODINFO
   9         bool "modinfo"
  10         default n
  11         help
  12           Show information about a Linux Kernel module
  13
  14 config BUSYBOX_CONFIG_MODPROBE_SMALL
  15         bool "Simplified modutils"
  16         default n
  17         help
  18           Simplified modutils.
  19
  20           With this option modprobe does not require modules.dep file
  21           and does not use /etc/modules.conf file.
  22           It scans module files in /lib/modules/`uname -r` and
  23           determines dependencies and module alias names on the fly.
  24           This may make module loading slower, most notably
  25           when one needs to load module by alias (this requires
  26           scanning through module _bodies_).
  27
  28           At the first attempt to load a module by alias modprobe
  29           will try to generate modules.dep.bb file in order to speed up
  30           future loads by alias. Failure to do so (read-only /lib/modules,
  31           etc) is not reported, and future modprobes will be slow too.
  32
  33           NB: modules.dep.bb file format is not compatible
  34           with modules.dep file as created/used by standard module tools.
  35
  36           Additional module parameters can be stored in
  37           /etc/modules/$module_name files.
  38
  39           Apart from modprobe, other utilities are also provided:
  40           - insmod is an alias to modprobe
  41           - rmmod is an alias to modprobe -r
  42           - depmod generates modules.dep.bb
  43
  44           As of 2008-07, this code is experimental. It is 14kb smaller
  45           than "non-small" modutils.
  46
  47 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
  48         bool "Accept module options on modprobe command line"
  49         default n
  50         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  51         help
  52           Allow insmod and modprobe take module options from command line.
  53
  54 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
  55         bool "Skip loading of already loaded modules"
  56         default n
  57         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  58         help
  59           Check if the module is already loaded.
  60
  61 config BUSYBOX_CONFIG_INSMOD
  62         bool "insmod"
  63         default y
  64         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  65         help
  66           insmod is used to load specified modules in the running kernel.
  67
  68 config BUSYBOX_CONFIG_RMMOD
  69         bool "rmmod"
  70         default y
  71         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  72         help
  73           rmmod is used to unload specified modules from the kernel.
  74
  75 config BUSYBOX_CONFIG_LSMOD
  76         bool "lsmod"
  77         default y
  78         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  79         help
  80           lsmod is used to display a list of loaded modules.
  81
  82 config BUSYBOX_CONFIG_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
  83         bool "Pretty output"
  84         default y
  85         depends on BUSYBOX_CONFIG_LSMOD
  86         help
  87           This option makes output format of lsmod adjusted to
  88           the format of module-init-tools for Linux kernel 2.6.
  89           Increases size somewhat.
  90
  91 config BUSYBOX_CONFIG_MODPROBE
  92         bool "modprobe"
  93         default n
  94         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  95         help
  96           Handle the loading of modules, and their dependencies on a high
  97           level.
  98
  99 config BUSYBOX_CONFIG_FEATURE_MODPROBE_BLACKLIST
 100         bool "Blacklist support"
 101         default n
 102         depends on BUSYBOX_CONFIG_MODPROBE
 103         help
 104           Say 'y' here to enable support for the 'blacklist' command in
 105           modprobe.conf. This prevents the alias resolver to resolve
 106           blacklisted modules. This is useful if you want to prevent your
 107           hardware autodetection scripts to load modules like evdev, frame
 108           buffer drivers etc.
 109
 110 config BUSYBOX_CONFIG_DEPMOD
 111         bool "depmod"
 112         default n
 113         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
 114         help
 115           depmod generates modules.dep (and potentially modules.alias
 116           and modules.symbols) that contain dependency information
 117           for modprobe.
 118
 119 comment "Options common to multiple modutils"
 120
 121 config BUSYBOX_CONFIG_FEATURE_2_4_MODULES
 122         bool "Support version 2.2/2.4 Linux kernels"
 123         default n
 124         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_LSMOD
 125         help
 126           Support module loading for 2.2.x and 2.4.x Linux kernels.
 127           This increases size considerably. Say N unless you plan
 128           to run ancient kernels.
 129
 130 config BUSYBOX_CONFIG_FEATURE_INSMOD_TRY_MMAP
 131         bool "Try to load module from a mmap'ed area"
 132         default n
 133         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE_SMALL
 134         help
 135           This option causes module loading code to try to mmap
 136           module first. If it does not work (for example,
 137           it does not work for compressed modules), module will be read
 138           (and unpacked if needed) into a memory block allocated by malloc.
 139
 140           The only case when mmap works but malloc does not is when
 141           you are trying to load a big module on a very memory-constrained
 142           machine. Malloc will momentarily need 2x as much memory as mmap.
 143
 144           Choosing N saves about 250 bytes of code (on 32-bit x86).
 145
 146 config BUSYBOX_CONFIG_FEATURE_INSMOD_VERSION_CHECKING
 147         bool "Enable module version checking"
 148         default n
 149         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 150         help
 151           Support checking of versions for modules. This is used to
 152           ensure that the kernel and module are made for each other.
 153
 154 config BUSYBOX_CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
 155         bool "Add module symbols to kernel symbol table"
 156         default n
 157         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 158         help
 159           By adding module symbols to the kernel symbol table, Oops messages
 160           occuring within kernel modules can be properly debugged. By enabling
 161           this feature, module symbols will always be added to the kernel symbol
 162           table for proper debugging support. If you are not interested in
 163           Oops messages from kernel modules, say N.
 164
 165 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOADINKMEM
 166         bool "In kernel memory optimization (uClinux only)"
 167         default n
 168         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 169         help
 170           This is a special uClinux only memory optimization that lets insmod
 171           load the specified kernel module directly into kernel space, reducing
 172           memory usage by preventing the need for two copies of the module
 173           being loaded into memory.
 174
 175 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP
 176         bool "Enable insmod load map (-m) option"
 177         default n
 178         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && BUSYBOX_CONFIG_INSMOD
 179         help
 180           Enabling this, one would be able to get a load map
 181           output on stdout. This makes kernel module debugging
 182           easier.
 183           If you don't plan to debug kernel modules, you
 184           don't need this option.
 185
 186 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP_FULL
 187         bool "Symbols in load map"
 188         default n
 189         depends on BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP && !BUSYBOX_CONFIG_MODPROBE_SMALL
 190         help
 191           Without this option, -m will only output section
 192           load map. With this option, -m will also output
 193           symbols load map.
 194
 195 config BUSYBOX_CONFIG_FEATURE_CHECK_TAINTED_MODULE
 196         bool "Support tainted module checking with new kernels"
 197         default y
 198         depends on (BUSYBOX_CONFIG_LSMOD || BUSYBOX_CONFIG_FEATURE_2_4_MODULES) && !BUSYBOX_CONFIG_MODPROBE_SMALL
 199         help
 200           Support checking for tainted modules. These are usually binary
 201           only modules that will make the linux-kernel list ignore your
 202           support request.
 203           This option is required to support GPLONLY modules.
 204
 205 config BUSYBOX_CONFIG_FEATURE_MODUTILS_ALIAS
 206         bool "Support for module.aliases file"
 207         default n
 208         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE
 209         help
 210           Generate and parse modules.alias containing aliases for bus
 211           identifiers:
 212             alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
 213
 214           and aliases for logical modules names e.g.:
 215             alias padlock_aes aes
 216             alias aes_i586 aes
 217             alias aes_generic aes
 218
 219           Say Y if unsure.
 220
 221 config BUSYBOX_CONFIG_FEATURE_MODUTILS_SYMBOLS
 222         bool "Support for module.symbols file"
 223         default n
 224         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE
 225         help
 226           Generate and parse modules.symbols containing aliases for
 227           symbol_request() kernel calls, such as:
 228             alias symbol:usb_sg_init usbcore
 229
 230           Say Y if unsure.
 231
 232 config BUSYBOX_CONFIG_DEFAULT_MODULES_DIR
 233         string "Default directory containing modules"
 234         default "/lib/modules"
 235         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL || BUSYBOX_CONFIG_MODINFO
 236         help
 237           Directory that contains kernel modules.
 238           Defaults to "/lib/modules"
 239
 240 config BUSYBOX_CONFIG_DEFAULT_DEPMOD_FILE
 241         string "Default name of modules.dep"
 242         default "modules.dep"
 243         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL || BUSYBOX_CONFIG_MODINFO
 244         help
 245           Filename that contains kernel modules dependencies.
 246           Defaults to "modules.dep"
 247
 248 endmenu