1#! /bin/sh 2# 3# This script is used to configure the linux kernel. 4# 5# It was inspired by a desire to not have to hit <enter> 9 million times 6# or startup the X server just to change a single kernel parameter. 7# 8# This script attempts to parse the configuration files, which are 9# scattered throughout the kernel source tree, and creates a temporary 10# set of mini scripts which are in turn used to create nested menus and 11# radiolists. 12# 13# It uses a very modified/mutilated version of the "dialog" utility 14# written by Savio Lam (lam836@cs.cuhk.hk). Savio is not responsible 15# for this script or the version of dialog used by this script. 16# Please do not contact him with questions. The official version of 17# dialog is available at sunsite.unc.edu or a sunsite mirror. 18# 19# Portions of this script were borrowed from the original Configure 20# script. 21# 22# William Roadcap was the original author of Menuconfig. 23# Michael Elizabeth Chastain (mec@shout.net) is the current maintainer. 24# 25# 070497 Bernhard Kaindl (bkaindl@netway.at) - get default values for 26# new bool, tristate and dep_tristate parameters from the defconfig file. 27# new configuration parameters are marked with '(NEW)' as in make config. 28# 29# 180697 Bernhard Kaindl (bkaindl@netway.at) - added the needed support 30# for string options. They are handled like the int and hex options. 31# 32# 081297 Pavel Machek (pavel@atrey.karlin.mff.cuni.cz) - better error 33# handling 34# 35# 131197 Michael Chastain (mec@shout.net) - output all lines for a 36# choice list, not just the selected one. This makes the output 37# the same as Configure output, which is important for smart config 38# dependencies. 39# 40# 101297 Michael Chastain (mec@shout.net) - remove sound driver cruft. 41# 42# 221297 Michael Chastain (mec@shout.net) - make define_bool actually 43# define its arguments so that later tests on them work right. 44# 45# 160198 Michael Chastain (mec@shout.net) - fix bug with 'c' command 46# (complement existing value) when used on virgin uninitialized variables. 47# 48# 090398 Axel Boldt (boldt@math.ucsb.edu) - allow for empty lines in help 49# texts. 50# 51# 12 Dec 1998, Michael Elizabeth Chastain (mec@shout.net) 52# Remove a /tmp security hole in get_def (also makes it faster). 53# Give uninitialized variables canonical values rather than null value. 54# Change a lot of places to call set_x_info uniformly. 55# Take out message about preparing version (old sound driver cruft). 56# 57# 13 Dec 1998, Riley H Williams <Riley@Williams.Name> 58# When an error occurs, actually display the error message as well as 59# our comments thereon. 60# 61# 31 Dec 1998, Michael Elizabeth Chastain (mec@shout.net) 62# Fix mod_bool to honor $CONFIG_MODULES. 63# Fix dep_tristate to call define_bool when dependency is "n". 64# 65# 02 January 1999, Michael Elizabeth Chastain (mec@shout.net) 66# Blow away lxdialog.scrltmp on entry to activate_menu. This protects 67# against people who use commands like ' ' to select menus. 68# 69# 24 January 1999, Michael Elizabeth Chastain, <mec@shout.net> 70# - Improve the exit message (Jeff Ronne). 71# 72# 06 July 1999, Andrzej M. Krzysztofowicz, <ankry@mif.pg.gda.pl> 73# - Support for multiple conditions in dep_tristate(). 74# - Implemented new functions: define_tristate(), define_int(), define_hex(), 75# define_string(), dep_bool(). 76# 77# 12 November 2001, Keith Owens <kaos@ocs.com.au> 78# Escape double quotes on eval so the quotes are still there on the second 79# evaluation, required to handle strings with special characters. 80# 81 82 83# 84# Change this to TRUE if you prefer all kernel options listed 85# in a single menu rather than the standard menu hierarchy. 86# 87single_menu_mode= 88 89# 90# Make sure we're really running bash. 91# 92[ -z "$BASH" ] && { echo "Menuconfig requires bash" 1>&2; exit 1; } 93 94# 95# Cache function definitions, turn off posix compliance 96# 97set -h +o posix 98 99 100 101# Given a configuration variable, set the global variable $x to its value, 102# and the global variable $info to the string " (NEW)" if this is a new 103# variable. 104# 105# This function looks for: (1) the current value, or (2) the default value 106# from the arch-dependent defconfig file, or (3) a default passed by the caller. 107 108function set_x_info () { 109 eval x=\$$1 110 if [ -z "$x" ]; then 111 eval `sed -n -e 's/# \(.*\) is not set.*/\1=n/' -e "/^$1=/p" arch/$ARCH/defconfig` 112 eval x=\${$1:-\"$2\"} 113 eval $1=$x 114 eval INFO_$1="' (NEW)'" 115 fi 116 eval info=\"\$INFO_$1\" 117} 118 119# 120# Load the functions used by the config.in files. 121# 122# I do this because these functions must be redefined depending 123# on whether they are being called for interactive use or for 124# saving a configuration to a file. 125# 126# Thank the heavens bash supports nesting function definitions. 127# 128load_functions () { 129 130# 131# Additional comments 132# 133function comment () { 134 comment_ctr=$[ comment_ctr + 1 ] 135 echo -ne "': $comment_ctr' '--- $1' " >>MCmenu 136} 137 138# 139# Define a boolean to a specific value. 140# 141function define_bool () { 142 eval $1=$2 143} 144 145function define_tristate () { 146 eval $1=$2 147} 148 149function define_hex () { 150 eval $1=$2 151} 152 153function define_int () { 154 eval $1=$2 155} 156 157function define_string () { 158 eval $1=\"$2\" 159} 160 161# 162# Create a boolean (Yes/No) function for our current menu 163# which calls our local bool function. 164# 165function bool () { 166 set_x_info "$2" "n" 167 168 case $x in 169 y|m) flag="*" ;; 170 n) flag=" " ;; 171 esac 172 173 echo -ne "'$2' '[$flag] $1$info' " >>MCmenu 174 175 echo -e "function $2 () { l_bool '$2' \"\$1\" ;}\n" >>MCradiolists 176} 177 178# 179# Create a tristate (Yes/No/Module) radiolist function 180# which calls our local tristate function. 181# 182# Collapses to a boolean (Yes/No) if module support is disabled. 183# 184function tristate () { 185 if [ "$CONFIG_MODULES" != "y" ] 186 then 187 bool "$1" "$2" 188 else 189 set_x_info "$2" "n" 190 191 case $x in 192 y) flag="*" ;; 193 m) flag="M" ;; 194 *) flag=" " ;; 195 esac 196 197 echo -ne "'$2' '<$flag> $1$info' " >>MCmenu 198 199 echo -e " 200 function $2 () { l_tristate '$2' \"\$1\" ;}" >>MCradiolists 201 fi 202} 203 204# 205# Create a tristate radiolist function which is dependent on 206# another kernel configuration option. 207# 208# Quote from the original configure script: 209# 210# If the option we depend upon is a module, 211# then the only allowable options are M or N. If Y, then 212# this is a normal tristate. This is used in cases where modules 213# are nested, and one module requires the presence of something 214# else in the kernel. 215# 216function dep_tristate () { 217 ques="$1" 218 var="$2" 219 dep=y 220 shift 2 221 while [ $# -gt 0 ]; do 222 if [ "$1" = y ]; then 223 shift 224 elif [ "$1" = m ]; then 225 dep=m 226 shift 227 else 228 dep=n 229 shift $# 230 fi 231 done 232 if [ "$dep" = y ]; then 233 tristate "$ques" "$var" 234 elif [ "$dep" = m ]; then 235 mod_bool "$ques" "$var" 236 else 237 define_tristate "$var" n 238 fi 239} 240 241# 242# Same as above, but now only Y and N are allowed as dependency 243# (i.e. third and next arguments). 244# 245function dep_bool () { 246 ques="$1" 247 var="$2" 248 dep=y 249 shift 2 250 while [ $# -gt 0 ]; do 251 if [ "$1" = y ]; then 252 shift 253 else 254 dep=n 255 shift $# 256 fi 257 done 258 if [ "$dep" = y ]; then 259 bool "$ques" "$var" 260 else 261 define_bool "$var" n 262 fi 263} 264 265function dep_mbool () { 266 ques="$1" 267 var="$2" 268 dep=y 269 shift 2 270 while [ $# -gt 0 ]; do 271 if [ "$1" = y -o "$1" = m ]; then 272 shift 273 else 274 dep=n 275 shift $# 276 fi 277 done 278 if [ "$dep" = y ]; then 279 bool "$ques" "$var" 280 else 281 define_bool "$var" n 282 fi 283} 284 285# 286# Add a menu item which will call our local int function. 287# 288function int () { 289 set_x_info "$2" "$3" 290 291 echo -ne "'$2' '($x) $1$info' " >>MCmenu 292 293 echo -e "function $2 () { l_int '$1' '$2' '$3' '$x' ;}" >>MCradiolists 294} 295 296# 297# Add a menu item which will call our local hex function. 298# 299function hex () { 300 set_x_info "$2" "$3" 301 x=${x##*[x,X]} 302 303 echo -ne "'$2' '($x) $1$info' " >>MCmenu 304 305 echo -e "function $2 () { l_hex '$1' '$2' '$3' '$x' ;}" >>MCradiolists 306} 307 308# 309# Add a menu item which will call our local string function. 310# 311function string () { 312 set_x_info "$2" "$3" 313 314 echo -ne "'$2' ' $1: \"$x\"$info' " >>MCmenu 315 316 echo -e "function $2 () { l_string '$1' '$2' '$3' '$x' ;}" >>MCradiolists 317} 318 319# 320# Add a menu item which will call our local One-of-Many choice list. 321# 322function choice () { 323 # 324 # Need to remember params cause they're gonna get reset. 325 # 326 title=$1 327 choices=$2 328 default=$3 329 current= 330 331 # 332 # Find out if one of the choices is already set. 333 # If it's not then make it the default. 334 # 335 set -- $choices 336 firstchoice=$2 337 338 while [ -n "$2" ] 339 do 340 if eval [ \"_\$$2\" = \"_y\" ] 341 then 342 current=$1 343 break 344 fi 345 shift ; shift 346 done 347 348 : ${current:=$default} 349 350 echo -ne "'$firstchoice' '($current) $title' " >>MCmenu 351 352 echo -e " 353 function $firstchoice () \ 354 { l_choice '$title' \"$choices\" \"$current\" ;}" >>MCradiolists 355} 356 357} # END load_functions() 358 359 360 361 362 363# 364# Extract available help for an option from Configure.help 365# and send it to standard output. 366# 367# Most of this function was borrowed from the original kernel 368# Configure script. 369# 370function extract_help () { 371 if [ -f Documentation/Configure.help ] 372 then 373 #first escape regexp special characters in the argument: 374 var=$(echo "$1"|sed 's/[][\/.^$*]/\\&/g') 375 #now pick out the right help text: 376 text=$(sed -n "/^$var[ ]*\$/,\${ 377 /^$var[ ]*\$/c\\ 378${var}:\\ 379 380 /^#/b 381 /^[^ ]/q 382 s/^ // 383 /<file:\\([^>]*\\)>/s//\\1/g 384 p 385 }" Documentation/Configure.help) 386 387 if [ -z "$text" ] 388 then 389 echo "There is no help available for this kernel option." 390 return 1 391 else 392 echo "$text" 393 fi 394 else 395 echo "There is no help available for this kernel option." 396 return 1 397 fi 398} 399 400# 401# Activate a help dialog. 402# 403function help () { 404 if extract_help $1 >help.out 405 then 406 $DIALOG --backtitle "$backtitle" --title "$2"\ 407 --textbox help.out $ROWS $COLS 408 else 409 $DIALOG --backtitle "$backtitle" \ 410 --textbox help.out $ROWS $COLS 411 fi 412 rm -f help.out 413} 414 415# 416# Show the README file. 417# 418function show_readme () { 419 $DIALOG --backtitle "$backtitle" \ 420 --textbox scripts/README.Menuconfig $ROWS $COLS 421} 422 423# 424# Begin building the dialog menu command and Initialize the 425# Radiolist function file. 426# 427function menu_name () { 428 echo -ne "$DIALOG --title '$1'\ 429 --backtitle '$backtitle' \ 430 --menu '$menu_instructions' \ 431 $ROWS $COLS $((ROWS-10)) \ 432 '$default' " >MCmenu 433 >MCradiolists 434} 435 436# 437# Add a submenu option to the menu currently under construction. 438# 439function submenu () { 440 echo -ne "'activate_menu $2' '$1 --->' " >>MCmenu 441} 442 443# 444# Handle a boolean (Yes/No) option. 445# 446function l_bool () { 447 if [ -n "$2" ] 448 then 449 case "$2" in 450 y|m) eval $1=y ;; 451 c) eval x=\$$1 452 case $x in 453 y) eval $1=n ;; 454 n) eval $1=y ;; 455 *) eval $1=y ;; 456 esac ;; 457 *) eval $1=n ;; 458 esac 459 else 460 echo -ne "\007" 461 fi 462} 463 464# 465# Same as bool() except options are (Module/No) 466# 467function mod_bool () { 468 if [ "$CONFIG_MODULES" != "y" ]; then 469 define_bool "$2" "n" 470 else 471 set_x_info "$2" "n" 472 473 case $x in 474 y|m) flag='M' ;; 475 *) flag=' ' ;; 476 esac 477 478 echo -ne "'$2' '<$flag> $1$info' " >>MCmenu 479 480 echo -e "function $2 () { l_mod_bool '$2' \"\$1\" ;}" >>MCradiolists 481 fi 482} 483 484# 485# Same as l_bool() except options are (Module/No) 486# 487function l_mod_bool() { 488 if [ -n "$2" ] 489 then 490 case "$2" in 491 y) echo -en "\007" 492 ${DIALOG} --backtitle "$backtitle" \ 493 --infobox "\ 494This feature depends on another which has been configured as a module. \ 495As a result, this feature will be built as a module." 4 70 496 sleep 5 497 eval $1=m ;; 498 m) eval $1=m ;; 499 c) eval x=\$$1 500 case $x in 501 m) eval $1=n ;; 502 n) eval $1=m ;; 503 *) eval $1=m ;; 504 esac ;; 505 *) eval $1=n ;; 506 esac 507 else 508 echo -ne "\007" 509 fi 510} 511 512# 513# Handle a tristate (Yes/No/Module) option. 514# 515function l_tristate () { 516 if [ -n "$2" ] 517 then 518 eval x=\$$1 519 520 case "$2" in 521 y) eval $1=y ;; 522 m) eval $1=m ;; 523 c) eval x=\$$1 524 case $x in 525 y) eval $1=n ;; 526 n) eval $1=m ;; 527 m) eval $1=y ;; 528 *) eval $1=y ;; 529 esac ;; 530 *) eval $1=n ;; 531 esac 532 else 533 echo -ne "\007" 534 fi 535} 536 537# 538# Create a dialog for entering an integer into a kernel option. 539# 540function l_int () { 541 while true 542 do 543 if $DIALOG --title "$1" \ 544 --backtitle "$backtitle" \ 545 --inputbox "$inputbox_instructions_int" \ 546 10 75 "$4" 2>MCdialog.out 547 then 548 answer="`cat MCdialog.out`" 549 answer="${answer:-$3}" 550 551 # Semantics of + and ? in GNU expr changed, so 552 # we avoid them: 553 if expr "$answer" : '0$' '|' "$answer" : '[1-9][0-9]*$' '|' "$answer" : '-[1-9][0-9]*$' >/dev/null 554 then 555 eval $2=\"$answer\" 556 else 557 eval $2=\"$3\" 558 echo -en "\007" 559 ${DIALOG} --backtitle "$backtitle" \ 560 --infobox "You have made an invalid entry." 3 43 561 sleep 2 562 fi 563 564 break 565 fi 566 567 help "$2" "$1" 568 done 569} 570 571# 572# Create a dialog for entering a hexadecimal into a kernel option. 573# 574function l_hex () { 575 while true 576 do 577 if $DIALOG --title "$1" \ 578 --backtitle "$backtitle" \ 579 --inputbox "$inputbox_instructions_hex" \ 580 10 75 "$4" 2>MCdialog.out 581 then 582 answer="`cat MCdialog.out`" 583 answer="${answer:-$3}" 584 answer="${answer##*[x,X]}" 585 586 if expr "$answer" : '[0-9a-fA-F][0-9a-fA-F]*$' >/dev/null 587 then 588 eval $2=\"$answer\" 589 else 590 eval $2=\"$3\" 591 echo -en "\007" 592 ${DIALOG} --backtitle "$backtitle" \ 593 --infobox "You have made an invalid entry." 3 43 594 sleep 2 595 fi 596 597 break 598 fi 599 600 help "$2" "$1" 601 done 602} 603 604# 605# Create a dialog for entering a string into a kernel option. 606# 607function l_string () { 608 while true 609 do 610 if $DIALOG --title "$1" \ 611 --backtitle "$backtitle" \ 612 --inputbox "$inputbox_instructions_string" \ 613 10 75 "$4" 2>MCdialog.out 614 then 615 answer="`cat MCdialog.out`" 616 answer="${answer:-$3}" 617 618 # 619 # Someone may add a nice check for the entered 620 # string here... 621 # 622 eval $2=\"$answer\" 623 624 break 625 fi 626 627 help "$2" "$1" 628 done 629} 630 631 632# 633# Handle a one-of-many choice list. 634# 635function l_choice () { 636 # 637 # Need to remember params cause they're gonna get reset. 638 # 639 title="$1" 640 choices="$2" 641 current="$3" 642 chosen= 643 644 # 645 # Scan current value of choices and set radiolist switches. 646 # 647 list= 648 set -- $choices 649 firstchoice=$2 650 while [ -n "$2" ] 651 do 652 case "$1" in 653 "$current"*) if [ -z "$chosen" ]; then 654 list="$list $2 $1 ON " 655 chosen=1 656 else 657 list="$list $2 $1 OFF " 658 fi ;; 659 *) list="$list $2 $1 OFF " ;; 660 esac 661 662 shift ; shift 663 done 664 665 while true 666 do 667 if $DIALOG --title "$title" \ 668 --backtitle "$backtitle" \ 669 --radiolist "$radiolist_instructions" \ 670 15 70 6 $list 2>MCdialog.out 671 then 672 choice=`cat MCdialog.out` 673 break 674 fi 675 676 help "$firstchoice" "$title" 677 done 678 679 # 680 # Now set the boolean value of each option based on 681 # the selection made from the radiolist. 682 # 683 set -- $choices 684 while [ -n "$2" ] 685 do 686 if [ "$2" = "$choice" ] 687 then 688 eval $2=\"y\" 689 else 690 eval $2=\"n\" 691 fi 692 693 shift ; shift 694 done 695} 696 697# 698# Call awk, and watch for error codes, etc. 699# 700function callawk () { 701awk "$1" || { echo "Awk died with error code $?. Giving up."; exit 1; } 702} 703 704# 705# A faster awk based recursive parser. (I hope) 706# 707function parser1 () { 708callawk ' 709BEGIN { 710 menu_no = 0 711 comment_is_option = 0 712 parser("'$CONFIG_IN'","MCmenu0") 713} 714 715function parser(ifile,menu) { 716 717 while ((getline <ifile) > 0) { 718 if ($1 == "mainmenu_option") { 719 comment_is_option = "1" 720 } 721 else if ($1 == "comment" && comment_is_option == "1") { 722 comment_is_option= "0" 723 sub($1,"",$0) 724 ++menu_no 725 726 printf("submenu %s MCmenu%s\n", $0, menu_no) >>menu 727 728 newmenu = sprintf("MCmenu%d", menu_no); 729 printf( "function MCmenu%s () {\n"\ 730 "default=$1\n"\ 731 "menu_name %s\n",\ 732 menu_no, $0) >newmenu 733 734 parser(ifile, newmenu) 735 } 736 else if ($0 ~ /^#|\$MAKE|mainmenu_name/) { 737 printf("") >>menu 738 } 739 else if ($1 ~ "endmenu") { 740 printf("}\n") >>menu 741 return 742 } 743 else if ($1 == "source") { 744 parser($2,menu) 745 } 746 else { 747 print >>menu 748 } 749 } 750}' 751} 752 753# 754# Secondary parser for single menu mode. 755# 756function parser2 () { 757callawk ' 758BEGIN { 759 parser("'$CONFIG_IN'","MCmenu0") 760} 761 762function parser(ifile,menu) { 763 764 while ((getline <ifile) > 0) { 765 if ($0 ~ /^#|$MAKE|mainmenu_name/) { 766 printf("") >>menu 767 } 768 else if ($1 ~ /mainmenu_option|endmenu/) { 769 printf("") >>menu 770 } 771 else if ($1 == "source") { 772 parser($2,menu) 773 } 774 else { 775 print >>menu 776 } 777 } 778}' 779} 780 781# 782# Parse all the config.in files into mini scripts. 783# 784function parse_config_files () { 785 rm -f MCmenu* 786 787 echo "function MCmenu0 () {" >MCmenu0 788 echo 'default=$1' >>MCmenu0 789 echo "menu_name 'Main Menu'" >>MCmenu0 790 791 if [ "_$single_menu_mode" = "_TRUE" ] 792 then 793 parser2 794 else 795 parser1 796 fi 797 798 echo "comment ''" >>MCmenu0 799 echo "g_alt_config" >>MCmenu0 800 echo "s_alt_config" >>MCmenu0 801 802 echo "}" >>MCmenu0 803 804 # 805 # These mini scripts must be sourced into the current 806 # environment in order for all of this to work. Leaving 807 # them on the disk as executables screws up the recursion 808 # in activate_menu(), among other things. Once they are 809 # sourced we can discard them. 810 # 811 for i in MCmenu* 812 do 813 echo -n "." 814 source ./$i 815 done 816 rm -f MCmenu* 817} 818 819# 820# This is the menu tree's bootstrap. 821# 822# Executes the parsed menus on demand and creates a set of functions, 823# one per configuration option. These functions will in turn execute 824# dialog commands or recursively call other menus. 825# 826function activate_menu () { 827 rm -f lxdialog.scrltmp 828 while true 829 do 830 comment_ctr=0 #So comment lines get unique tags 831 832 $1 "$default" 2> MCerror #Create the lxdialog menu & functions 833 834 if [ "$?" != "0" ] 835 then 836 clear 837 cat <<EOM 838 839Menuconfig has encountered a possible error in one of the kernel's 840configuration files and is unable to continue. Here is the error 841report: 842 843EOM 844 sed 's/^/ Q> /' MCerror 845 cat <<EOM 846 847Please report this to the maintainer <mec@shout.net>. You may also 848send a problem report to <linux-kernel@vger.kernel.org>. 849 850Please indicate the kernel version you are trying to configure and 851which menu you were trying to enter when this error occurred. 852 853EOM 854 cleanup 855 exit 1 856 fi 857 rm -f MCerror 858 859 . ./MCradiolists #Source the menu's functions 860 861 . ./MCmenu 2>MCdialog.out #Activate the lxdialog menu 862 ret=$? 863 864 read selection <MCdialog.out 865 866 case "$ret" in 867 0|3|4|5|6) 868 defaults="$selection$defaults" #pseudo stack 869 case "$ret" in 870 0) eval $selection ;; 871 3) eval $selection y ;; 872 4) eval $selection n ;; 873 5) eval $selection m ;; 874 6) eval $selection c ;; 875 esac 876 default="${defaults%%*}" defaults="${defaults#*}" 877 ;; 878 2) 879 default="${selection%%\ *}" 880 881 case "$selection" in 882 *"-->"*|*"alt_config"*) 883 show_readme ;; 884 *) 885 eval help $selection ;; 886 esac 887 ;; 888 255|1) 889 break 890 ;; 891 139) 892 stty sane 893 clear 894 cat <<EOM 895 896There seems to be a problem with the lxdialog companion utility which is 897built prior to running Menuconfig. Usually this is an indicator that you 898have upgraded/downgraded your ncurses libraries and did not remove the 899old ncurses header file(s) in /usr/include or /usr/include/ncurses. 900 901It is VERY important that you have only one set of ncurses header files 902and that those files are properly version matched to the ncurses libraries 903installed on your machine. 904 905You may also need to rebuild lxdialog. This can be done by moving to 906the /usr/src/linux/scripts/lxdialog directory and issuing the 907"make clean all" command. 908 909If you have verified that your ncurses install is correct, you may email 910the maintainer <mec@shout.net> or post a message to 911<linux-kernel@vger.kernel.org> for additional assistance. 912 913EOM 914 cleanup 915 exit 139 916 ;; 917 esac 918 done 919} 920 921# 922# Create a menu item to load an alternate configuration file. 923# 924g_alt_config () { 925 echo -n "get_alt_config 'Load an Alternate Configuration File' "\ 926 >>MCmenu 927} 928 929# 930# Get alternate config file name and load the 931# configuration from it. 932# 933get_alt_config () { 934 set -f ## Switch file expansion OFF 935 936 while true 937 do 938 ALT_CONFIG="${ALT_CONFIG:-$DEFAULTS}" 939 940 $DIALOG --backtitle "$backtitle" \ 941 --inputbox "\ 942Enter the name of the configuration file you wish to load. \ 943Accept the name shown to restore the configuration you \ 944last retrieved. Leave blank to abort."\ 945 11 55 "$ALT_CONFIG" 2>MCdialog.out 946 947 if [ "$?" = "0" ] 948 then 949 ALT_CONFIG=`cat MCdialog.out` 950 951 [ "_" = "_$ALT_CONFIG" ] && break 952 953 if eval [ -r \"$ALT_CONFIG\" ] 954 then 955 eval load_config_file \"$ALT_CONFIG\" 956 break 957 else 958 echo -ne "\007" 959 $DIALOG --backtitle "$backtitle" \ 960 --infobox "File does not exist!" 3 38 961 sleep 2 962 fi 963 else 964 cat <<EOM >help.out 965 966For various reasons, one may wish to keep several different kernel 967configurations available on a single machine. 968 969If you have saved a previous configuration in a file other than the 970kernel's default, entering the name of the file here will allow you 971to modify that configuration. 972 973If you are uncertain, then you have probably never used alternate 974configuration files. You should therefor leave this blank to abort. 975 976EOM 977 $DIALOG --backtitle "$backtitle"\ 978 --title "Load Alternate Configuration"\ 979 --textbox help.out $ROWS $COLS 980 fi 981 done 982 983 set +f ## Switch file expansion ON 984 rm -f help.out MCdialog.out 985} 986 987# 988# Create a menu item to store an alternate config file. 989# 990s_alt_config () { 991 echo -n "save_alt_config 'Save Configuration to an Alternate File' "\ 992 >>MCmenu 993} 994 995# 996# Get an alternate config file name and save the current 997# configuration to it. 998# 999save_alt_config () { 1000 set -f ## Switch file expansion OFF
1001 1002 while true 1003 do 1004 $DIALOG --backtitle "$backtitle" \ 1005 --inputbox "\ 1006Enter a filename to which this configuration should be saved \ 1007as an alternate. Leave blank to abort."\ 1008 10 55 "$ALT_CONFIG" 2>MCdialog.out 1009 1010 if [ "$?" = "0" ] 1011 then 1012 ALT_CONFIG=`cat MCdialog.out` 1013 1014 [ "_" = "_$ALT_CONFIG" ] && break 1015 1016 if eval touch $ALT_CONFIG 2>/dev/null 1017 then 1018 eval save_configuration $ALT_CONFIG 1019 load_functions ## RELOAD 1020 break 1021 else 1022 echo -ne "\007" 1023 $DIALOG --backtitle "$backtitle" \ 1024 --infobox "Can't create file! Probably a nonexistent directory." 3 60 1025 sleep 2 1026 fi 1027 else 1028 cat <<EOM >help.out 1029 1030For various reasons, one may wish to keep different kernel 1031configurations available on a single machine. 1032 1033Entering a file name here will allow you to later retrieve, modify 1034and use the current configuration as an alternate to whatever 1035configuration options you have selected at that time. 1036 1037If you are uncertain what all this means then you should probably 1038leave this blank. 1039EOM 1040 $DIALOG --backtitle "$backtitle"\ 1041 --title "Save Alternate Configuration"\ 1042 --textbox help.out $ROWS $COLS 1043 fi 1044 done 1045 1046 set +f ## Switch file expansion ON 1047 rm -f help.out MCdialog.out 1048} 1049 1050# 1051# Load config options from a file. 1052# Converts all "# OPTION is not set" lines to "OPTION=n" lines 1053# 1054function load_config_file () { 1055 awk ' 1056 /# .* is not set.*/ { printf("%s=n\n", $2) } 1057 ! /# .* is not set.*/ { print } 1058 ' $1 >.tmpconfig 1059 1060 source ./.tmpconfig 1061 rm -f .tmpconfig 1062} 1063 1064# 1065# Just what it says. 1066# 1067save_configuration () { 1068 echo 1069 echo -n "Saving your kernel configuration." 1070 1071 # 1072 # Now, let's redefine the configuration functions for final 1073 # output to the config files. 1074 # 1075 # Nested function definitions, YIPEE! 1076 # 1077 function bool () { 1078 set_x_info "$2" "n" 1079 eval define_bool \"$2\" \"$x\" 1080 } 1081 1082 function tristate () { 1083 set_x_info "$2" "n" 1084 eval define_tristate \"$2\" \"$x\" 1085 } 1086 1087 function dep_tristate () { 1088 set_x_info "$2" "n" 1089 var="$2" 1090 shift 2 1091 while [ $# -gt 0 ]; do 1092 if [ "$1" = y ]; then 1093 shift 1094 elif [ "$1" = m -a "$x" != n ]; then 1095 x=m; shift 1096 else 1097 x=n; shift $# 1098 fi 1099 done 1100 define_tristate "$var" "$x" 1101 } 1102 1103 function dep_bool () { 1104 set_x_info "$2" "n" 1105 var="$2" 1106 shift 2 1107 while [ $# -gt 0 ]; do 1108 if [ "$1" = y ]; then 1109 shift 1110 else 1111 x=n; shift $# 1112 fi 1113 done 1114 define_bool "$var" "$x" 1115 } 1116 1117 function dep_mbool () { 1118 set_x_info "$2" "n" 1119 var="$2" 1120 shift 2 1121 while [ $# -gt 0 ]; do 1122 if [ "$1" = y -o "$1" = m ]; then 1123 shift 1124 else 1125 x=n; shift $# 1126 fi 1127 done 1128 define_bool "$var" "$x" 1129 } 1130 1131 function int () { 1132 set_x_info "$2" "$3" 1133 echo "$2=$x" >>$CONFIG 1134 echo "#define $2 ($x)" >>$CONFIG_H 1135 } 1136 1137 function hex () { 1138 set_x_info "$2" "$3" 1139 echo "$2=$x" >>$CONFIG 1140 echo "#define $2 0x${x##*[x,X]}" >>$CONFIG_H 1141 } 1142 1143 function string () { 1144 set_x_info "$2" "$3" 1145 echo "$2=\"$x\"" >>$CONFIG 1146 echo "#define $2 \"$x\"" >>$CONFIG_H 1147 } 1148 1149 function define_hex () { 1150 eval $1=\"$2\" 1151 echo "$1=$2" >>$CONFIG 1152 echo "#define $1 0x${2##*[x,X]}" >>$CONFIG_H 1153 } 1154 1155 function define_int () { 1156 eval $1=\"$2\" 1157 echo "$1=$2" >>$CONFIG 1158 echo "#define $1 ($2)" >>$CONFIG_H 1159 } 1160 1161 function define_string () { 1162 eval $1=\"$2\" 1163 echo "$1=\"$2\"" >>$CONFIG 1164 echo "#define $1 \"$2\"" >>$CONFIG_H 1165 } 1166 1167 function define_bool () { 1168 define_tristate "$1" "$2" 1169 } 1170 1171 function define_tristate () { 1172 eval $1=\"$2\" 1173 1174 case "$2" in 1175 y) 1176 echo "$1=y" >>$CONFIG 1177 echo "#define $1 1" >>$CONFIG_H 1178 ;; 1179 1180 m) 1181 if [ "$CONFIG_MODULES" = "y" ] 1182 then 1183 echo "$1=m" >>$CONFIG 1184 echo "#undef $1" >>$CONFIG_H 1185 echo "#define $1_MODULE 1" >>$CONFIG_H 1186 else 1187 echo "$1=y" >>$CONFIG 1188 echo "#define $1 1" >>$CONFIG_H 1189 fi 1190 ;; 1191 1192 n) 1193 echo "# $1 is not set" >>$CONFIG 1194 echo "#undef $1" >>$CONFIG_H 1195 ;; 1196 esac 1197 } 1198 1199 function choice () { 1200 # 1201 # Find the first choice that's already set to 'y' 1202 # 1203 choices="$2" 1204 default="$3" 1205 current= 1206 chosen= 1207 1208 set -- $choices 1209 while [ -n "$2" ] 1210 do 1211 if eval [ \"_\$$2\" = \"_y\" ] 1212 then 1213 current=$1 1214 break 1215 fi 1216 shift ; shift 1217 done 1218 1219 # 1220 # Use the default if none were set. 1221 # 1222 : ${current:=$default} 1223 1224 # 1225 # Output all choices (to be compatible with other configs). 1226 # 1227 set -- $choices 1228 while [ -n "$2" ] 1229 do 1230 case "$1" in 1231 "$current"*) if [ -z "$chosen" ]; then 1232 define_bool "$2" "y" 1233 chosen=1 1234 else 1235 define_bool "$2" "n" 1236 fi ;; 1237 *) define_bool "$2" "n" ;; 1238 esac 1239 shift ; shift 1240 done 1241 } 1242 1243 function mainmenu_name () { 1244 : 1245 } 1246 1247 function mainmenu_option () { 1248 comment_is_option=TRUE 1249 } 1250 1251 function endmenu () { 1252 : 1253 } 1254 1255 function comment () { 1256 if [ "$comment_is_option" ] 1257 then 1258 comment_is_option= 1259 echo >>$CONFIG 1260 echo "#" >>$CONFIG 1261 echo "# $1" >>$CONFIG 1262 echo "#" >>$CONFIG 1263 1264 echo >>$CONFIG_H 1265 echo "/*" >>$CONFIG_H 1266 echo " * $1" >>$CONFIG_H 1267 echo " */" >>$CONFIG_H 1268 fi 1269 } 1270 1271 echo -n "." 1272 1273 DEF_CONFIG="${1:-.config}" 1274 DEF_CONFIG_H="include/linux/autoconf.h" 1275 1276 CONFIG=.tmpconfig 1277 CONFIG_H=.tmpconfig.h 1278 1279 echo "#" >$CONFIG 1280 echo "# Automatically generated by make menuconfig: don't edit" >>$CONFIG 1281 echo "#" >>$CONFIG 1282 1283 echo "/*" >$CONFIG_H 1284 echo " * Automatically generated by make menuconfig: don't edit" >>$CONFIG_H 1285 echo " */" >>$CONFIG_H 1286 echo "#define AUTOCONF_INCLUDED" >> $CONFIG_H 1287 1288 echo -n "." 1289 if . $CONFIG_IN >>.menuconfig.log 2>&1 1290 then 1291 if [ "$DEF_CONFIG" = ".config" ] 1292 then 1293 mv $CONFIG_H $DEF_CONFIG_H 1294 fi 1295 1296 if [ -f "$DEF_CONFIG" ] 1297 then 1298 rm -f ${DEF_CONFIG}.old 1299 mv $DEF_CONFIG ${DEF_CONFIG}.old 1300 fi 1301 1302 mv $CONFIG $DEF_CONFIG 1303 1304 return 0 1305 else 1306 return 1 1307 fi 1308} 1309 1310# 1311# Remove temporary files 1312# 1313cleanup () { 1314 cleanup1 1315 cleanup2 1316} 1317 1318cleanup1 () { 1319 rm -f MCmenu* MCradiolists MCdialog.out help.out 1320} 1321 1322cleanup2 () { 1323 rm -f .tmpconfig .tmpconfig.h 1324} 1325 1326set_geometry () { 1327 # Some distributions export these with incorrect values 1328 # which can really screw up some ncurses programs. 1329 LINES= COLUMNS= 1330 1331 ROWS=${1:-24} COLS=${2:-80} 1332 1333 # Just in case the nasty rlogin bug returns. 1334 # 1335 [ $ROWS = 0 ] && ROWS=24 1336 [ $COLS = 0 ] && COLS=80 1337 1338 if [ $ROWS -lt 19 -o $COLS -lt 80 ] 1339 then 1340 echo -e "\n\007Your display is too small to run Menuconfig!" 1341 echo "It must be at least 19 lines by 80 columns." 1342 exit 1 1343 fi 1344 1345 ROWS=$((ROWS-4)) COLS=$((COLS-5)) 1346} 1347 1348 1349set_geometry `stty size 2>/dev/null` 1350 1351menu_instructions="\ 1352Arrow keys navigate the menu. \ 1353<Enter> selects submenus --->. \ 1354Highlighted letters are hotkeys. \ 1355Pressing <Y> includes, <N> excludes, <M> modularizes features. \ 1356Press <Esc><Esc> to exit, <?> for Help. \ 1357Legend: [*] built-in [ ] excluded <M> module < > module capable" 1358 1359radiolist_instructions="\ 1360Use the arrow keys to navigate this window or \ 1361press the hotkey of the item you wish to select \ 1362followed by the <SPACE BAR>. 1363Press <?> for additional information about this option." 1364 1365inputbox_instructions_int="\ 1366Please enter a decimal value. \ 1367Fractions will not be accepted. \ 1368Use the <TAB> key to move from the input field to the buttons below it." 1369 1370inputbox_instructions_hex="\ 1371Please enter a hexadecimal value. \ 1372Use the <TAB> key to move from the input field to the buttons below it." 1373 1374inputbox_instructions_string="\ 1375Please enter a string value. \ 1376Use the <TAB> key to move from the input field to the buttons below it." 1377 1378DIALOG="./scripts/lxdialog/lxdialog" 1379 1380kernel_version="${VERSION}.${PATCHLEVEL}.${SUBLEVEL}${EXTRAVERSION}" 1381 1382backtitle="Linux Kernel v$kernel_version Configuration" 1383 1384trap "cleanup ; exit 1" 1 2 15 1385 1386 1387# 1388# Locate default files. 1389# 1390CONFIG_IN=./config.in 1391if [ "$1" != "" ] ; then 1392 CONFIG_IN=$1 1393fi 1394 1395DEFAULTS=arch/$ARCH/defconfig 1396if [ -f .config ]; then 1397 DEFAULTS=.config 1398fi 1399 1400if [ -f $DEFAULTS ] 1401then 1402 echo "Using defaults found in" $DEFAULTS 1403 load_config_file $DEFAULTS 1404else 1405 echo "No defaults found" 1406fi 1407 1408 1409# Fresh new log. 1410>.menuconfig.log 1411 1412# Load the functions used by the config.in files. 1413echo -n "Preparing scripts: functions" 1414load_functions 1415 1416if [ ! -e $CONFIG_IN ] 1417then 1418 echo "Your main config.in file ($CONFIG_IN) does not exist" 1419 exit 1 1420fi 1421 1422if [ ! -x $DIALOG ] 1423then 1424 echo "Your lxdialog utility does not exist" 1425 exit 1 1426fi 1427 1428# 1429# Read config.in files and parse them into one shell function per menu. 1430# 1431echo -n ", parsing" 1432parse_config_files $CONFIG_IN 1433 1434echo "done." 1435# 1436# Start the ball rolling from the top. 1437# 1438activate_menu MCmenu0 1439 1440# 1441# All done! 1442# 1443cleanup1 1444 1445# 1446# Confirm and Save 1447# 1448if $DIALOG --backtitle "$backtitle" \ 1449 --yesno "Do you wish to save your new kernel configuration?" 5 60 1450then 1451 save_configuration 1452 echo 1453 echo 1454 echo "*** End of Linux kernel configuration." 1455 echo "*** Check the top-level Makefile for additional configuration." 1456 if [ ! -f .hdepend -o "$CONFIG_MODVERSIONS" = "y" ] ; then 1457 echo "*** Next, you must run 'make dep'." 1458 else 1459 echo "*** Next, you may run 'make bzImage', 'make bzdisk', or 'make install'." 1460 fi 1461 echo 1462else 1463 echo 1464 echo 1465 echo Your kernel configuration changes were NOT saved. 1466 echo 1467fi 1468 1469# Remove log if empty. 1470if [ ! -s .menuconfig.log ] ; then 1471 rm -f .menuconfig.log 1472fi 1473 1474exit 0 1475