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_MODPROBE_SMALL
   9         bool "Simplified modutils"
  10         default n
  11         help
  12           Simplified modutils.
  13
  14           With this option modprobe does not require modules.dep file
  15           and does not use /etc/modules.conf file.
  16           It scans module files in /lib/modules/`uname -r` and
  17           determines dependencies and module alias names on the fly.
  18           This may make module loading slower, most notably
  19           when one needs to load module by alias (this requires
  20           scanning through module _bodies_).
  21
  22           At the first attempt to load a module by alias modprobe
  23           will try to generate modules.dep.bb file in order to speed up
  24           future loads by alias. Failure to do so (read-only /lib/modules,
  25           etc) is not reported, and future modprobes will be slow too.
  26
  27           NB: modules.dep.bb file format is not compatible
  28           with modules.dep file as created/used by standard module tools.
  29
  30           Additional module parameters can be stored in
  31           /etc/modules/$module_name files.
  32
  33           Apart from modprobe, other utilities are also provided:
  34           - insmod is an alias to modprobe
  35           - rmmod is an alias to modprobe -r
  36           - depmod generates modules.dep.bb
  37
  38           As of 2008-07, this code is experimental. It is 14kb smaller
  39           than "non-small" modutils.
  40
  41 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
  42         bool "Accept module options on modprobe command line"
  43         default n
  44         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  45         help
  46           Allow insmod and modprobe take module options from command line.
  47           N.B. Very bloaty.
  48
  49 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
  50         bool "Skip loading of already loaded modules"
  51         default n
  52         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  53         help
  54           Check if the module is already loaded.
  55           N.B. It's racy.
  56
  57 config BUSYBOX_CONFIG_DEPMOD
  58         bool "depmod"
  59         default n
  60         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  61         help
  62           depmod generates modules.dep (FIXME: elaborate)
  63
  64 config BUSYBOX_CONFIG_FEATURE_DEPMOD_PRUNE_FANCY
  65         bool "Fancy dependency pruning"
  66         default n
  67         depends on BUSYBOX_CONFIG_DEPMOD
  68         help
  69           By default modules.dep contains all dependencies as listed by
  70           the modules.
  71           If you enable this option then we remove implied modules from
  72           the dependencies.
  73           This makes depmod somewhat bigger but generates a smaller
  74           modules.dep file.
  75
  76           If unsure, say N.
  77
  78 config BUSYBOX_CONFIG_FEATURE_DEPMOD_ALIAS
  79         bool "Alias support"
  80         default n
  81         depends on BUSYBOX_CONFIG_DEPMOD
  82         help
  83           By default modules.dep does not contain alias information.
  84           Enable this to emit aliases of the form:
  85
  86             alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
  87
  88 config BUSYBOX_CONFIG_INSMOD
  89         bool "insmod"
  90         default y
  91         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  92         help
  93           insmod is used to load specified modules in the running kernel.
  94
  95 config BUSYBOX_CONFIG_FEATURE_INSMOD_VERSION_CHECKING
  96         bool "Module version checking"
  97         default n
  98         depends on BUSYBOX_CONFIG_INSMOD && BUSYBOX_CONFIG_FEATURE_2_4_MODULES
  99         help
 100           Support checking of versions for modules. This is used to
 101           ensure that the kernel and module are made for each other.
 102
 103 config BUSYBOX_CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
 104         bool "Add module symbols to kernel symbol table"
 105         default n
 106         depends on BUSYBOX_CONFIG_INSMOD && BUSYBOX_CONFIG_FEATURE_2_4_MODULES
 107         help
 108           By adding module symbols to the kernel symbol table, Oops messages
 109           occuring within kernel modules can be properly debugged. By enabling
 110           this feature, module symbols will always be added to the kernel symbol
 111           table for properly debugging support. If you are not interested in
 112           Oops messages from kernel modules, say N.
 113
 114 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOADINKMEM
 115         bool "In kernel memory optimization (uClinux only)"
 116         default n
 117         depends on BUSYBOX_CONFIG_INSMOD && BUSYBOX_CONFIG_FEATURE_2_4_MODULES
 118         help
 119           This is a special uClinux only memory optimization that lets insmod
 120           load the specified kernel module directly into kernel space, reducing
 121           memory usage by preventing the need for two copies of the module
 122           being loaded into memory.
 123
 124 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP
 125         bool "Enable load map (-m) option"
 126         default n
 127         depends on BUSYBOX_CONFIG_INSMOD && ( BUSYBOX_CONFIG_FEATURE_2_4_MODULES || BUSYBOX_CONFIG_FEATURE_2_6_MODULES )
 128         help
 129           Enabling this, one would be able to get a load map
 130           output on stdout. This makes kernel module debugging
 131           easier.
 132           If you don't plan to debug kernel modules, you
 133           don't need this option.
 134
 135 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP_FULL
 136         bool "Symbols in load map"
 137         default n
 138         depends on BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP
 139         help
 140           Without this option, -m will only output section
 141           load map. With this option, -m will also output
 142           symbols load map.
 143
 144 config BUSYBOX_CONFIG_RMMOD
 145         bool "rmmod"
 146         default y
 147         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
 148         help
 149           rmmod is used to unload specified modules from the kernel.
 150
 151 config BUSYBOX_CONFIG_LSMOD
 152         bool "lsmod"
 153         default y
 154         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
 155         help
 156           lsmod is used to display a list of loaded modules.
 157
 158 config BUSYBOX_CONFIG_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
 159         bool "Pretty output for 2.6.x Linux kernels"
 160         default y
 161         depends on BUSYBOX_CONFIG_LSMOD
 162         help
 163           This option makes output format of lsmod adjusted to
 164           the format of module-init-tools for Linux kernel 2.6.
 165
 166 config BUSYBOX_CONFIG_MODPROBE
 167         bool "modprobe"
 168         default n
 169         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
 170         help
 171           Handle the loading of modules, and their dependencies on a high
 172           level.
 173
 174           Note that in the state, modprobe does not understand multiple
 175           module options from the configuration file. See option below.
 176
 177 config BUSYBOX_CONFIG_FEATURE_MODPROBE_MULTIPLE_OPTIONS
 178         bool
 179         prompt "Multiple options parsing"
 180         default n
 181         depends on BUSYBOX_CONFIG_MODPROBE
 182         help
 183           Allow modprobe to understand more than one option to pass to
 184           modules.
 185
 186           This is a WIP, while waiting for a common argument parsing
 187           common amongst all BB applets (shell, modprobe, etc...) and
 188           adds around 600 bytes on x86, 700 bytes on ARM. The code is
 189           biggish and uggly, but just works.
 190
 191           Saying Y here is not a bad idea if you're not that short
 192           on storage capacity.
 193
 194 config BUSYBOX_CONFIG_FEATURE_MODPROBE_FANCY_ALIAS
 195         bool
 196         prompt "Fancy alias parsing"
 197         default n
 198         depends on BUSYBOX_CONFIG_MODPROBE && BUSYBOX_CONFIG_FEATURE_2_6_MODULES
 199         help
 200           Say 'y' here to enable parsing of aliases with underscore/dash
 201           mismatch between module name and file name, along with bus-specific
 202           aliases (such as pci:... or usb:... aliases).
 203
 204 config BUSYBOX_CONFIG_FEATURE_MODPROBE_BLACKLIST
 205         bool
 206         prompt "Blacklist support"
 207         default n
 208         depends on BUSYBOX_CONFIG_MODPROBE && BUSYBOX_CONFIG_FEATURE_2_6_MODULES
 209         help
 210           Say 'y' here to enable support for the 'blacklist' command in
 211           modprobe.conf. This prevents the alias resolver to resolve
 212           blacklisted modules. This is useful if you want to prevent your
 213           hardware autodetection scripts to load modules like evdev, frame
 214           buffer drivers etc.
 215
 216 comment "Options common to multiple modutils"
 217         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_LSMOD || BUSYBOX_CONFIG_DEPMOD
 218
 219 config BUSYBOX_CONFIG_FEATURE_CHECK_TAINTED_MODULE
 220         # Simulate indentation
 221         bool "Support tainted module checking with new kernels"
 222         default y
 223         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_LSMOD
 224         help
 225           Support checking for tainted modules. These are usually binary
 226           only modules that will make the linux-kernel list ignore your
 227           support request.
 228           This option is required to support GPLONLY modules.
 229
 230 config BUSYBOX_CONFIG_FEATURE_2_4_MODULES
 231         # Simulate indentation
 232         bool "Support version 2.2.x to 2.4.x Linux kernels"
 233         default n
 234         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_MODPROBE
 235         help
 236           Support module loading for 2.2.x and 2.4.x Linux kernels.
 237
 238           Note:
 239           This is automatically enabled if 2.6 modules are not enabled.
 240
 241 config BUSYBOX_CONFIG_FEATURE_2_6_MODULES
 242         # Simulate indentation
 243         bool "Support version 2.6.x Linux kernels"
 244         default y
 245         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_MODPROBE
 246         help
 247           Support module loading for newer 2.6.x Linux kernels.
 248
 249 config BUSYBOX_CONFIG_DEFAULT_MODULES_DIR
 250         # Simulate indentation
 251         string "Default directory containing modules"
 252         default "/lib/modules"
 253         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL || BUSYBOX_CONFIG_DEPMOD
 254         help
 255           Directory that contains kernel modules.
 256           Defaults to "/lib/modules"
 257
 258 config BUSYBOX_CONFIG_DEFAULT_DEPMOD_FILE
 259         # Simulate indentation
 260         string "Default name of modules.dep"
 261         default "modules.dep"
 262         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL || BUSYBOX_CONFIG_DEPMOD
 263         help
 264           Filename that contains kernel modules dependencies.
 265           Defaults to "modules.dep"
 266
 267 config BUSYBOX_CONFIG_FEATURE_QUERY_MODULE_INTERFACE
 268         bool
 269         default n
 270         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && !BUSYBOX_CONFIG_FEATURE_2_6_MODULES
 271
 272 endmenu