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Import brltty
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Debian Installer feat. BRLTTY
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-----------------------------
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Debian Installer natively supports BRLTTY since its beta 3 for Debian
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Etch, see official announcement at [1]. If your Braille display is
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connected by USB, simply press ENTER at syslinux prompt (at the very
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beginning of the installation process), your display should be
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autodetected. Otherwise, if either your display is connected by
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serial port or you want to set a particular Braille table, give the
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following line at syslinux prompt before pressing ENTER (you may be
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careful as the keyboard layout is qwerty at this step):
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install brltty=drv,dev,tbl
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"drv" stands for the BRLTTY code of your Braille display, "dev" stands
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for the device your Braille display is connected to (e.g. ttyS0, usb:,
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...) and "tbl" stands for the code of the Braille table to be set.
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For example, this is the line that enables BRLTTY for a BAUM
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SuperVario 40 Braille display connected by USB with default Braille
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table:
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install brltty=bm,usb:
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Supported Braille displays and Braille tables are listed along with
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corresponding codes in the BRLTTY manual, see [2]. Details about
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installing Debian are available at [3]. Please also consider joining
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Debian Accessibility mailing list at [4].
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Footnotes:
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[1] http://www.debian.org/devel/debian-installer/News/2006/20060811
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[2] http://mielke.cc/brltty/doc/Manual-BRLTTY/English/BRLTTY.html
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[3] http://www.debian.org/releases/stable/installmanual
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[4] http://lists.debian.org/debian-accessibility/
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-- Boris Daix <Boris.Daix@alysse.org> Sun, 27 Aug 2006 23:10:15 +0200
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@@ -0,0 +1,159 @@
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Adding BRLTTY to a Red Hat Linux Install CD
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===========================================
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Written during April, 2004, by Dave Mielke <dave@mielke.cc>.
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Quick Start
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-----------
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The script "rhmkiso" can be used to add BRLTTY to a RedHat or Fedora install
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CD. Here's how to use it.
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First: Log in as (or su to) root. This is because the script uses a loopback
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mount. You'll probably also need to be root in order to write the resultant
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image to a CD as well.
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Second: Create an empty directory and change to it.
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mkdir work
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cd work
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Third: Copy or download the image of the installer CD ("boot.iso") for the
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desired RedHat or Fedora release, or the image for the first CD of the full
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installation set ("disc1.iso"), into the current directory.
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cp /path/to/boot.iso .
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Fourth: Copy or download the tarball for the desired BRLTTY release into the
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current directory.
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cp /path/to/brltty-3.5.tar.gz .
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Fifth: Run the "rhmkiso" script with no options or parameters.
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rhmkiso
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Sixth: You should now have a new file, "brltty.iso", in the current directory.
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Write this modified image to a CD.
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cdrecord -v dev=0,0,0 -data brltty.iso
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If you're using a rewritable CD then you should erase it first.
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cdrecord -v dev=0,0,0 blank=fast
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For more information on writing to a CD, please check the CD-Writing HOWTO at:
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http://tldp.org/HOWTO/CD-Writing-HOWTO.html
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Seventh: Boot from the CD you've just written, and wait a few seconds after it
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begins to spin in order to give the boot loader enough time to get started and
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to present its initial prompt. Then enter:
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text brltty=<driver>,<device>,<table>
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e.g.
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text brltty=ht,ttyS1,de
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You can omit any operand, allowing it to default, simply by not specifying it.
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You also needn't specify any trailing commas resulting from omitted operands.
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text brltty=ht,ttyS1,
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text brltty=ht,ttyS1
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text brltty=ht,
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text brltty=ht
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text brltty=ht,,de
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text brltty=ht,,
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The <driver> operand is the two-letter identifier of the driver for your
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braille display. It's the only required operand. See the -b option (below) for
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further details.
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The <device> operand is the device to which your braille display is connected.
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It's optional, and defaults to the primary serial port ("/dev/ttyS0"). If your
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display is connected to a serial port then specify either the name (e.g.
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"ttyS1") of or the path (e.g. "/dev/ttyS1") to the corresponding device. If
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it's connected to the USB then specify "usb:" (the trailing colon is
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important).
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The <table> operand is the text translation table you wish to use. It's
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optional, and defaults to "nabcc" (North American Braille Computer Code). See
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the "text.*.tbl" files in the "BrailleTables" subdirectory of BRLTTY's source
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tree for alternatives. See the -t option (below) for further details.
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The Details
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-----------
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The "rhmkiso" script can add BRLTTY to either a RedHat or a Fedora install CD.
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It can be applied either to the basic installer CD or to the first CD of the
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full installation set, and makes the following modifications to the image:
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* BRLTTY is added (all drivers, all tables).
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* The timeout for the initial boot loader prompt is disabled.
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* The default kernel configuration to be booted is changed to "text".
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* The use of frame buffers for the "text" consoles is disabled.
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For rescue images, the following additional modifications are made:
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* Text consoles are used when "rescue" is selected.
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* The use of frame buffers for the "rescue" consoles is disabled.
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Although its defaults are what usually needs to be done, the "rhmkiso" script
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offers a number of options so that you can customize what it does. It's general
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invocation syntax is:
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rhmkiso [-option ...]
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The following options are provided:
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-i file The original (input) image (default: boot.iso).
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-o file The modified (output) image (default: brltty.iso).
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-a file The BRLTTY archive (default: check current directory).
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-b driver,... The braille driver(s) to include (default: all).
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-t file The text translation table to build in (default: nabcc).
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-s Invoke an interactive shell to inspect the modified image.
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-h Display usage information and exit.
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The -i option specifies the location of the distribution-supplied original
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(input) image which is to be modified. Either a relative or an absolute path
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may be supplied. It defaults to "boot.iso" (the usual name for the basic
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installer CD image).
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The -o option specifies the location of the file which is to contain the
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modified (output) image which the script will create. Either a relative or an
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absolute path may be supplied. It defaults to "brltty.iso".
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The -b option specifies which braille display drivers will be linked into the
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brltty executable as opposed to being built as dynamically loadable shared
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objects. If more than one driver is specified then their specifiers must be
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separated from one another by a comma. Either the two-letter identifier or the
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proper name (full or abbreviated) for each driver must be supplied. If a driver
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specifier is prefixed by a minus sign (-) then that driver is excluded from the
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build. The first non-excluded driver in the list is the default driver. The
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word "all", if used instead of a driver specifier as the last item in the list,
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causes all the remaining drivers to be implicitly appended to the list in no
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specific order (or, if preceded by a minus sign, to be excluded from the
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build). The default is "all", i.e. all of the drivers (in no particular order
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so the default is unpredictable) are linked in.
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The -t option specifies which text translation table is to be built into the
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brltty executable. If a relative path is supplied then it's anchored at the
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"BrailleTables" subdirectory within BRLTTY's source tree. Since any of BRLTTY's
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own tables can also be specified when the image is booted, the primary use of
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this option is to specify the absolute path to a user-defined table outside
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BRLTTY's source tree. The ".tbl" extension is optional. If a simple file name,
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i.e. one of BRLTTY's own tables, is being supplied then the "text." prefix is
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also optional. The default is "nabcc" (North American Braille Computer Code).
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The -s option causes an interactive shell to be invoked after all of the
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modifications to the files within the image have been made but before the CD
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image is created. This gives you an opportunity to inspect what the script has
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done. Your login shell, i.e. the one pointed to by the $SHELL environment
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variable, is used; if it's not set then "/bin/sh" is assumed.
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The script uses a lot of temporary file space to do its job, especially if the
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first CD of the full installation set is being used. This is because it needs
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to work with a complete extracted copy of the files within the image. If
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there's not enough space in "/tmp" then you can direct the script to use
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another directory via the $TMPDIR environment variable.
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The script uses a loopback mount to access the files within the original CD
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image. This means that it must be run as root.
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@@ -0,0 +1,209 @@
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Adding BRLTTY to a Red Hat Linux Install Floppy
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===============================================
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Written on April 7, 2002
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Here is an outline of a procedure for adapting the RedHat (or similar)
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installation boot disk so that BRLTTY can be used during the installation
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process.
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History:
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-Initial draft from Stéphane Doyon <s.doyon@videotron.ca>
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-Additions from Nicolas Pitre <nico@fluxnic.net>
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-April 7, 2002: Mostly rewritten by Stéphane Doyon to take into account
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the INIT_PATH hack
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-September 26, 2002: Amended by Dave Mielke <dave@mielke.cc> due to change from
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make file editing to autoconf in 3.1.
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TODO:
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-Figure out how to use shared libraries from a statically linked
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executable, when the lib references symbols from the main
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program. With that we could do generic bootdisk with dynamic selection
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of braille driver.
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-Give working instructions on how to make higher sized floppies for a
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one-floppy solution.
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You need an already working Linux station to perform this. A certain
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level of Linux/Unix expertise is also required. Please read to the end
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before doing anything. You'll probably end up asking for sighted help at
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some point (such as to know why it won't boot, or to help install BRLTTY
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on the new machine), but if you can get this to work then you'll be free
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to spend an hour on your own choosing which packages you want installed.
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This was last tried with RedHat 7.2.
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First step is compiling BRLTTY. The bootdisk will use one and only one
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BRLTTY driver, so you must choose wich. Do:
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make distclean
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./configure --enable-standalone-programs --with-init-path
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--with-braille-driver=<driver> --with-text-table=<table>
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make
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where <driver> is the driver to build into BRLTTY (one of the possible values
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listed under --with-braille-driver in the output from ./configure --help) and
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<table> is the text translation table to use (such as text.french.tbl,
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text.german.tbl, ...) (see the the BrailleTables/ subdirectory).
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This will build BRLTTY with the chosen display driver built-in, and will
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link the BRLTTY executable statically so that it doesn't depend on any
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shared libraries.
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If your display is on the second serial port instead of the first,
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you will need to add "--with-braille-device=/dev/ttyS1".
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You should get an executable called "brltty" (in the "Programs/" subdirectory)
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whose size is around 570K, depending on the driver you chose. If you do:
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file Programs/brltty
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it should say, among other things, "statically linked".
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The Red Hat installation boot disk is a DOS disk that contains a boot
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loader (called syslinux), a kernel (called vmlinuz), and an initial ramdisk
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(called initrd.img). This initial ramdisk is the initial root filesystem
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containing a bootstrap installation program: /sbin/init. We'll just put
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brltty on that ramdisk image and make sure it is started before anything
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else. However, because the statically linked brltty executable is so
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large, we will have to put the ramdisk image on a second floppy, because
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it won't fit on the original single boot floppy (with the kernel).
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So now we must hack floppies. Make a temporary work directory. We will
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call it ".../work", could be "~/work".
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mkdir .../work
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mkdir .../work/etcbrltty
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Now copy relevant files from your BRLTTY build. Copy the executable, the
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translation table, the contraction table (if you want it), and the help file(s)
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to your work directory.
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cp Programs/brltty .../work
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cp BrailleTables/*.tbl .../work/etcbrltty
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cp ContractionTables/*.ctb .../work/etcbrltty
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cp help/* .../work/etcbrltty
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(You can also copy alternative translation tables from BrailleTables/
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to .../work/etcbrltty. These CAN be loaded dynamically.)
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Now change to the work directory:
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cd .../work
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The executable is way too large for a boot disk because it contains lots of
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unneeded symbol table and debugging information. Remove this excess data in
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order to make the executable as small as possible.
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strip brltty
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Next step is to select an installation boot floppy image from your
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distribution. This could be images/boot.img or images/bootnet.img from an
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RH CDROM. Consider checking the updates site for your distribution in
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case they have updated installation disk images. If what you have is an
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actual floppy, use "dd if=/dev/fd0 of=boot.img bs=512" to make an image
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file from it.
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Copy the chosen image to your work directory and if necessary rename it
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to boot.img.
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So now the current directory should contain boot.img, brltty, and
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etcbrltty/.
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Now run the rhmkbot script (which is located in the same directory as this
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README). It will copy boot.img to myboot.img, and it will modify the
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syslinux.cfg: it will add a new boot entry called "brltty". That entry will
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have options to cause syslinux to load a ramdisk from a second floppy, instead
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of using the initrd.img on the first floppy. The brltty entry has the "text"
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keyword parameter to trigger the text-mode install. rhmkbot also makes this new
|
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entry the default boot entry.
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Now run the rhmkroot script. It will get initrd.img (the initial ramdisk)
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from boot.img and call it myroot.img. It will modify that image:
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-Rename /sbin/init to /sbin/init_real,
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-Copy brltty to /sbin/brltty,
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-Link /sbin/init to /sbin/brltty
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-Copy files from etcbrltty to /etc/brltty,
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-Try to make sure necessary devices such as vcsa, serial ports, and
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console device exist in /dev. (vcsa is usually missing.)
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If it turns out that the brltty executable is too large, do "./configure
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--help" and check out the various "--disable-..." options. Each removes a
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specific feature from BRLTTY, and results in a corresponding decrease in the
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size of the executable. Recommended possibilities include:
|
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--disable-table-selection --disable-learn-mode --disable-contracted-braille
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--disable-pcm-support --disable-midi-support --disable-fm-support
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--disable-api --disable-gpm
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--disable-speech-support --without-x
|
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|
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If building the Papenmeier driver, then also consider:
|
||||
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--disable-pm-configfile
|
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|
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Remember to do "make distclean" if you need to reconfigure BRLTTY.
|
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Assuming there are no errors, the next step is to actually write the
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floppies.
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So get two formatted floppies. One will be the boot floppy, the other the
|
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ramdisk floppy. To write the boot floppy do:
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dd if=myboot.img of=/dev/fd0 bs=512
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To write the ramdisk floppy do:
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||||
dd if=myroot.img of=/dev/fd0 bs=512
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||||
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That's it!
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So now boot the boot floppy on the machine you want to install. At the
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prompt you can press ENTER to choose the brltty entry.
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If you want to specify boot parameters, remember to use the label
|
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"brltty" instead of "linux".
|
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||||
You can pass options to BRLTTY from the boot prompt by using option names
|
||||
similar to those in the brltty.conf file: use only uppercase, use underscores
|
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instead of minus signs, and prefix with BRLTTY_. For example:
|
||||
|
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brltty BRLTTY_BRAILLE_DEVICE=/dev/ttyS1
|
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|
||||
When you press ENTER, syslinux will load the kernel. When the floppy
|
||||
stops spinning the kernel will start to run and will prompt you for the
|
||||
ramdisk floppy. Put the second floppy in and press ENTER. The kernel will
|
||||
load the ramdisk. When the floppy stops spinning, BRLTTY SHOULD
|
||||
(hopefullY) come on and the installation program should start.
|
||||
|
||||
One of the problems you may have during the installation process is that
|
||||
some autoconfiguration programs may play around with the serial ports to
|
||||
try to autodetect hardware, thereby upsetting them and causing BRLTTY to
|
||||
stop working. This can also occur when the system itself boots. More
|
||||
recent RedHat versions are less aggressive though. Two tricks if you have
|
||||
problems:
|
||||
-If kudzu runs when your system boots and upsets BRLTTY, either disable
|
||||
that service (using chkconfig or ntsysv) or modify /etc/sysconfig/kudzu
|
||||
or the script that uses kudzu to make it use the --safe option.
|
||||
-To get the installation program to leave a serial port alone, you might
|
||||
try to modify the ramdisk to change /dev/ttyS0 to say /dev/ttySmyown, and
|
||||
tell BRLTTY to use that as it's serial port. This might have the effect
|
||||
of hiding the serial port from bad applications.
|
||||
|
||||
Note that you must also install BRLTTY on your new machine. When it will boot
|
||||
Linux after the installation, BRLTTY will not be installed and the machine will
|
||||
be inaccessible. One way to simplify things is to use the statically linked
|
||||
brltty you compiled for the installation disk, as it is fairly self-contained.
|
||||
Once it's running, then you can build yourself a shared version and modify your
|
||||
boot scripts or inittab to have BRLTTY start automatically. A nice way to get
|
||||
brltty onto your new machine is this: during the installation process, after
|
||||
your target partition has been formatted, it is (at least with the current RH
|
||||
installation program) mounted under /mnt/sysimage. You can temporarily put
|
||||
aside the installation program and get a shell by going to the second virtual
|
||||
console (alt-F2). There you can do:
|
||||
|
||||
cp /sbin/brltty /mnt/sysimage/bin/
|
||||
|
||||
I am not sure if at that point it is possible to edit inittab or startup
|
||||
scripts. Otherwise on your first boot, you just have to log in as root
|
||||
(without braille support) and type "/bin/brltty" and if all went well
|
||||
BRLTTY should come on.
|
||||
|
||||
Good luck!
|
||||
@@ -0,0 +1,261 @@
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||||
#!/bin/sh
|
||||
###############################################################################
|
||||
# BRLTTY - A background process providing access to the console screen (when in
|
||||
# text mode) for a blind person using a refreshable braille display.
|
||||
#
|
||||
# Copyright (C) 1995-2012 by The BRLTTY Developers.
|
||||
#
|
||||
# BRLTTY comes with ABSOLUTELY NO WARRANTY.
|
||||
#
|
||||
# This is free software, placed under the terms of the
|
||||
# GNU General Public License, as published by the Free Software
|
||||
# Foundation; either version 2 of the License, or (at your option) any
|
||||
# later version. Please see the file LICENSE-GPL for details.
|
||||
#
|
||||
# Web Page: http://mielke.cc/brltty/
|
||||
#
|
||||
# This software is maintained by Dave Mielke <dave@mielke.cc>.
|
||||
###############################################################################
|
||||
|
||||
# Convert the boot parameter to configuration file directives.
|
||||
# If /proc is mounted then use the brltty= boot parameter in /proc/cmdline.
|
||||
# If /proc is not mounted then use the brltty environment variable.
|
||||
# Invoke with -h for usage information.
|
||||
|
||||
programName="${0##*/}"
|
||||
programMessage()
|
||||
{
|
||||
echo 2>&1 "${programName}: ${1}"
|
||||
}
|
||||
syntaxError()
|
||||
{
|
||||
programMessage "${1}"
|
||||
exit 2
|
||||
}
|
||||
internalError()
|
||||
{
|
||||
programMessage "${1}"
|
||||
exit 3
|
||||
}
|
||||
|
||||
configurationFile=""
|
||||
requestedAction=create
|
||||
deviceTranslation=none
|
||||
requestedParameter=""
|
||||
OPTIND=1
|
||||
while getopts ":f:cundop:h" option
|
||||
do
|
||||
case "${option}"
|
||||
in
|
||||
f) configurationFile="${OPTARG}";;
|
||||
c) requestedAction=create;;
|
||||
u) requestedAction=update;;
|
||||
n) deviceTranslation=none;;
|
||||
d) deviceTranslation=devfs;;
|
||||
o) deviceTranslation=old;;
|
||||
p) requestedParameter="${OPTARG}";;
|
||||
h)
|
||||
cat <<EOF
|
||||
Usage: ${programName} [option ...]
|
||||
-f file The configuration file to create/update.
|
||||
-c Create the configuration file (write to stdout if no -f).
|
||||
-u Update the configuration file (copying from stdin to stdout if no -f).
|
||||
-n Do not translate device paths.
|
||||
-d Do old-style to devfs device path translation.
|
||||
-o Do devfs to old-style device path translation.
|
||||
-p [driver][,[device][,[table]]]
|
||||
Explicitly specify the boot parameter.
|
||||
-h Display this usage summary.
|
||||
EOF
|
||||
exit 0
|
||||
;;
|
||||
\?) syntaxError "unknown option: -${OPTARG}";;
|
||||
:) syntaxError "missing value: -${OPTARG}";;
|
||||
*) internalError "unimplemented option: -${option}";;
|
||||
esac
|
||||
done
|
||||
shift "`expr $OPTIND - 1`"
|
||||
[ "${#}" -eq 0 ] || syntaxError "too many parameters."
|
||||
|
||||
case "${requestedAction}"
|
||||
in
|
||||
create)
|
||||
putConfigurationLine()
|
||||
{
|
||||
echo "${1}" || exit 4
|
||||
}
|
||||
startConfigurationFile()
|
||||
{
|
||||
[ -n "${configurationFile}" ] && exec >"${configurationFile}"
|
||||
putConfigurationLine "`makeHeaderLine Created`"
|
||||
putConfigurationLine "`makeParameterLine`"
|
||||
putConfigurationLine ""
|
||||
}
|
||||
putConfigurationDirective()
|
||||
{
|
||||
putConfigurationLine "${1} ${2}"
|
||||
}
|
||||
finalizeConfigurationFile()
|
||||
{
|
||||
:
|
||||
}
|
||||
;;
|
||||
update)
|
||||
putSedCommand()
|
||||
{
|
||||
sedScript="${sedScript}
|
||||
${1}"
|
||||
}
|
||||
startConfigurationFile()
|
||||
{
|
||||
if [ -n "${configurationFile}" ]
|
||||
then
|
||||
[ -e "${configurationFile}" ] || syntaxError "file not found: ${configurationFile}"
|
||||
[ -f "${configurationFile}" ] || syntaxError "not a file: ${configurationFile}"
|
||||
[ -r "${configurationFile}" ] || syntaxError "file not readable: ${configurationFile}"
|
||||
[ -w "${configurationFile}" ] || syntaxError "file not writable: ${configurationFile}"
|
||||
outputFile="${configurationFile}.new"
|
||||
exec <"${configurationFile}" >"${outputFile}"
|
||||
fi
|
||||
sedScript=""
|
||||
putSedCommand "1i\\
|
||||
`makeHeaderLine Updated`\\
|
||||
`makeParameterLine`\\
|
||||
"
|
||||
}
|
||||
putConfigurationDirective()
|
||||
{
|
||||
value="`echo "${2}" | sed -e 's%\\([/\\]\\)%\\\\\\1%g'`"
|
||||
putSedCommand "/^ *#\\(${1} .*\\)/s//\\1/"
|
||||
putSedCommand "/^ *\\(${1}\\) .*/s//\\1 ${value}/"
|
||||
}
|
||||
finalizeConfigurationFile()
|
||||
{
|
||||
sed -e "${sedScript}"
|
||||
[ -n "${outputFile}" ] && mv -f "${outputFile}" "${configurationFile}"
|
||||
}
|
||||
;;
|
||||
*) internalError "unimplemented action: ${requestedAction}";;
|
||||
esac
|
||||
|
||||
translateDevice_none()
|
||||
{
|
||||
:
|
||||
}
|
||||
translateDevice_devfs()
|
||||
{
|
||||
minor="${device#ttyS}"
|
||||
if [ "${minor}" != "${device}" ]
|
||||
then
|
||||
device="tts/${minor}"
|
||||
return 0
|
||||
fi
|
||||
minor="${device#lp}"
|
||||
if [ "${minor}" != "${device}" ]
|
||||
then
|
||||
device="printers/${minor}"
|
||||
return 0
|
||||
fi
|
||||
programMessage "unsupported old-style device: ${device}"
|
||||
}
|
||||
translateDevice_old()
|
||||
{
|
||||
major="${device%%/*}"
|
||||
if [ "${major}" != "${device}" ]
|
||||
then
|
||||
minor="${device#*/}"
|
||||
case "${major}"
|
||||
in
|
||||
tts) devfs="ttyS${minor}";;
|
||||
printers) devfs="lp${minor}";;
|
||||
esac
|
||||
fi
|
||||
if [ -n "${devfs}" ]
|
||||
then
|
||||
device="${devfs}"
|
||||
else
|
||||
programMessage "unsupported devfs device: ${device}"
|
||||
fi
|
||||
}
|
||||
|
||||
makeHeaderLine()
|
||||
{
|
||||
echo "# ${1} by brltty-bp2cf`date +' on %Y-%m-%d at %H:%M:%S %Z (UTC%z)'`."
|
||||
}
|
||||
makeParameterLine()
|
||||
{
|
||||
echo "# Boot Parameter:${bootParameter}"
|
||||
}
|
||||
putConfigurationFile()
|
||||
{
|
||||
startConfigurationFile
|
||||
[ -n "${brailleDriver}" ] && putConfigurationDirective "braille-driver" "${brailleDriver}"
|
||||
[ -n "${brailleDevice}" ] && {
|
||||
device="`echo "${brailleDevice}" | sed -e 's%//*%/%g' -e 's%^/dev/%%'`"
|
||||
if [ "${device#/}" = "${device}" ]
|
||||
then
|
||||
translateDevice_${deviceTranslation}
|
||||
fi
|
||||
putConfigurationDirective "braille-device" "${device}"
|
||||
}
|
||||
[ -n "${textTable}" ] && putConfigurationDirective "text-table" "${textTable}"
|
||||
finalizeConfigurationFile
|
||||
}
|
||||
parseBootParameter()
|
||||
{
|
||||
bootParameter="${bootParameter} ${1}"
|
||||
number=1
|
||||
while [ "${number}" -le 3 ]
|
||||
do
|
||||
cut="cut -d, -f${number}"
|
||||
[ "${number}" -gt 1 ] && cut="${cut} -s"
|
||||
operand="`echo ${1} | ${cut}`"
|
||||
if [ -n "${operand}" ]
|
||||
then
|
||||
case "${number}"
|
||||
in
|
||||
1) brailleDriver="${operand}";;
|
||||
2) brailleDevice="${operand}";;
|
||||
3) textTable="${operand}";;
|
||||
esac
|
||||
fi
|
||||
number="`expr ${number} + 1`"
|
||||
done
|
||||
}
|
||||
putBootParameter()
|
||||
{
|
||||
parseBootParameter "${1}"
|
||||
putConfigurationFile
|
||||
}
|
||||
parseBootCommand()
|
||||
{
|
||||
found=false
|
||||
while [ "${#}" -gt 0 ]
|
||||
do
|
||||
case "${1}"
|
||||
in
|
||||
"brltty="*)
|
||||
found=true
|
||||
parseBootParameter "${1#*=}"
|
||||
;;
|
||||
esac
|
||||
shift
|
||||
done
|
||||
"${found}" && putConfigurationFile
|
||||
}
|
||||
|
||||
brailleDriver=""
|
||||
brailleDevice=""
|
||||
textTable=""
|
||||
bootCommandFile="/proc/cmdline"
|
||||
if [ -n "${requestedParameter}" ]
|
||||
then
|
||||
putBootParameter "${requestedParameter}"
|
||||
elif [ -f "${bootCommandFile}" ]
|
||||
then
|
||||
parseBootCommand `cat "${bootCommandFile}"`
|
||||
elif [ -n "${brltty}" ]
|
||||
then
|
||||
putBootParameter "${brltty}"
|
||||
fi
|
||||
exit 0
|
||||
@@ -0,0 +1,20 @@
|
||||
#!/bin/sh
|
||||
|
||||
set -e
|
||||
|
||||
# Make local mount points
|
||||
mkdir -p mnt1 mnt2
|
||||
|
||||
# Work on a copy of bootdisk image
|
||||
cp -f boot.img myboot.img
|
||||
mount myboot.img mnt1 -o loop -t msdos
|
||||
|
||||
# Modify syslinux.cfg
|
||||
cat >cfg <<EOF
|
||||
label brltty
|
||||
kernel vmlinuz
|
||||
append root=/dev/fd0 load_ramdisk=1 prompt_ramdisk=1 lang= text devfs=nomount ramdisk_size=9216
|
||||
EOF
|
||||
cat mnt1/syslinux.cfg |sed 's/default linux/default brltty/' >>cfg
|
||||
cp cfg mnt1/syslinux.cfg
|
||||
umount mnt1
|
||||
@@ -0,0 +1,333 @@
|
||||
#!/bin/bash -p
|
||||
###############################################################################
|
||||
# BRLTTY - A background process providing access to the console screen (when in
|
||||
# text mode) for a blind person using a refreshable braille display.
|
||||
#
|
||||
# Copyright (C) 1995-2012 by The BRLTTY Developers.
|
||||
#
|
||||
# BRLTTY comes with ABSOLUTELY NO WARRANTY.
|
||||
#
|
||||
# This is free software, placed under the terms of the
|
||||
# GNU General Public License, as published by the Free Software
|
||||
# Foundation; either version 2 of the License, or (at your option) any
|
||||
# later version. Please see the file LICENSE-GPL for details.
|
||||
#
|
||||
# Web Page: http://mielke.cc/brltty/
|
||||
#
|
||||
# This software is maintained by Dave Mielke <dave@mielke.cc>.
|
||||
###############################################################################
|
||||
|
||||
programName="${0##*/}"
|
||||
programMessage() {
|
||||
echo >&2 "${programName}: ${1}"
|
||||
}
|
||||
programError() {
|
||||
[ -n "${1}" ] && programMessage "${1}"
|
||||
exit "${2:-3}"
|
||||
}
|
||||
syntaxError() {
|
||||
programError "${1}" 2
|
||||
}
|
||||
|
||||
mount_ext2() {
|
||||
mount -o loop -t ext2 "${2}" "${1}"
|
||||
}
|
||||
unmount_ext2() {
|
||||
umount "${1}"
|
||||
}
|
||||
check_ext2() {
|
||||
set -- $(stat -c '%a %s' -f -- "${initrdRoot}")
|
||||
initrdAvailableBlocks="${1}"
|
||||
initrdBlockSize="${2}"
|
||||
set -- $(du --block-size="${initrdBlockSize}" -s "${brlttyInstallRoot}")
|
||||
brlttyInstallBlocks="${1}"
|
||||
set -- $(stat -c '%s' -- "${initrdImage}")
|
||||
initrdImageBytes="${1}"
|
||||
initrdImageBlocks=$(( (initrdImageBytes + initrdBlockSize - 1) / initrdBlockSize ))
|
||||
initrdPadBlocks=$(( brlttyInstallBlocks - initrdAvailableBlocks ))
|
||||
(( (initrdPadBlocks += 200) > 0 )) && {
|
||||
initrdMounted=false
|
||||
"unmount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
|
||||
dd bs="${initrdBlockSize}" count="${initrdPadBlocks}" if="/dev/zero" of="${initrdImage}" seek="${initrdImageBlocks}"
|
||||
e2fsck -y -f "${initrdImage}" && resize2fs "${initrdImage}" || {
|
||||
newImage="${temporaryDirectory}/new.${initrdType}"
|
||||
cp -RpPd -- "${initrdImage}" "${newImage}"
|
||||
mke2fs -q -b "${initrdBlockSize}" -F "${newImage}"
|
||||
|
||||
newRoot="${temporaryDirectory}/new"
|
||||
mkdir "${newRoot}"
|
||||
|
||||
"mount_${initrdType}" "${newRoot}" "${newImage}"
|
||||
newMounted=true
|
||||
|
||||
"mount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
initrdMounted=true
|
||||
cp -RpPd -- "${initrdRoot}/." "${newRoot}"
|
||||
initrdMounted=false
|
||||
"unmount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
|
||||
newMounted=false
|
||||
"unmount_${initrdType}" "${newRoot}" "${newImage}"
|
||||
|
||||
cp -- "${newImage}" "${initrdImage}"
|
||||
}
|
||||
|
||||
"mount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
initrdMounted=true
|
||||
}
|
||||
}
|
||||
|
||||
mount_cpio() {
|
||||
cd "${1}"
|
||||
cpio --quiet -i -I "${2}"
|
||||
cd "${workingDirectory}"
|
||||
}
|
||||
unmount_cpio() {
|
||||
cd "${1}"
|
||||
[ -n "${2}" ] && {
|
||||
find . -print |
|
||||
sed -e '/^\.$/d' -e 's/^\.\///' |
|
||||
cpio --quiet -o -H newc -O "${2}"
|
||||
}
|
||||
rm -f -r -- $(ls -1 -A)
|
||||
cd "${workingDirectory}"
|
||||
}
|
||||
check_cpio() {
|
||||
:
|
||||
}
|
||||
|
||||
originalImage="boot.iso"
|
||||
modifiedImage="brltty.iso"
|
||||
brlttyPattern="brltty-*"
|
||||
brailleDrivers="all"
|
||||
textTable="en-nabcc"
|
||||
invokeShell=false
|
||||
|
||||
showUsage() {
|
||||
cat <<EOF
|
||||
Usage: ${programName} [-option ...]
|
||||
The following options are supported:
|
||||
-i file The original (input) image (default: ${originalImage}).
|
||||
-o file The modified (output) image (default: ${modifiedImage}).
|
||||
-a file The BRLTTY archive (default: ${brlttyPattern}).
|
||||
-b driver,... The braille driver(s) to include (default: ${brailleDrivers}).
|
||||
-t file The text table to build in (default: ${textTable}).
|
||||
-s Invoke an interactive shell to inspect the modified image.
|
||||
-h Display usage information and exit.
|
||||
EOF
|
||||
exit 0
|
||||
}
|
||||
|
||||
while getopts ":i:o:a:b:t:sh" option
|
||||
do
|
||||
case "${option}"
|
||||
in
|
||||
i) originalImage="${OPTARG}";;
|
||||
o) modifiedImage="${OPTARG}";;
|
||||
a) brlttyPattern="${OPTARG}";;
|
||||
b) brailleDrivers="${OPTARG}";;
|
||||
t) textTable="${OPTARG}";;
|
||||
s) invokeShell=true;;
|
||||
h) showUsage;;
|
||||
\?) syntaxError "unknown option: -${OPTARG}";;
|
||||
:) syntaxError "missing operand: -${OPTARG}";;
|
||||
*) syntaxError "unimplemented option: -${option}";;
|
||||
esac
|
||||
done
|
||||
shift $((OPTIND - 1))
|
||||
[ "${#}" -gt 0 ] && syntaxError "too many parameters."
|
||||
|
||||
[ -f "${originalImage}" ] || programError "original image not found: ${originalImage}"
|
||||
|
||||
shopt -s nullglob extglob
|
||||
set -- $brlttyPattern
|
||||
[ "${#}" -eq 0 ] && programError "brltty archive not found: ${brlttyPattern}"
|
||||
[ "${#}" -gt 1 ] && {
|
||||
brlttyArchives="$(echo "${*}" | sed -e 's% %,&%g')"
|
||||
programError "more than one brltty archive: ${brlttyArchives}"
|
||||
}
|
||||
brlttyArchive="${1}"
|
||||
|
||||
cleanup() {
|
||||
set +e
|
||||
cd /
|
||||
"${newMounted}" && "unmount_${initrdType}" "${newRoot}"
|
||||
"${initrdMounted}" && "unmount_${initrdType}" "${initrdRoot}"
|
||||
"${originalMounted}" && umount "${originalRoot}"
|
||||
[ -n "${temporaryDirectory}" ] && rm -r "${temporaryDirectory}"
|
||||
}
|
||||
set -e
|
||||
originalMounted=false
|
||||
initrdMounted=false
|
||||
newMounted=false
|
||||
trap "cleanup" 0
|
||||
|
||||
workingDirectory="${PWD}"
|
||||
temporaryDirectory="$(mktemp -d "${TMPDIR:-/tmp}/${programName}.XXXXXX")"
|
||||
|
||||
originalRoot="${temporaryDirectory}/original"
|
||||
mkdir "${originalRoot}"
|
||||
mount -o loop -t iso9660 "${originalImage}" "${originalRoot}"
|
||||
originalMounted=true
|
||||
|
||||
modifiedRoot="${temporaryDirectory}/modified"
|
||||
mkdir "${modifiedRoot}"
|
||||
cp -RpPd -- "${originalRoot}/." "${modifiedRoot}"
|
||||
|
||||
loaderDirectory=""
|
||||
for directory in boot/isolinux isolinux
|
||||
do
|
||||
[ -d "${originalRoot}/${directory}" ] && {
|
||||
loaderDirectory="${directory}"
|
||||
break
|
||||
}
|
||||
done
|
||||
|
||||
configurationFile="isolinux.cfg"
|
||||
sed -n -e '
|
||||
1i\
|
||||
prompt 1\
|
||||
timeout 0\
|
||||
default text\
|
||||
|
||||
/^ *prompt /d
|
||||
/^ *timeout /d
|
||||
/^ *default /d
|
||||
/^ *menu *default *$/d
|
||||
/^ *append.* text/s/$/ nofb/
|
||||
/^ *append.* rescue/s/$/ text nofb/
|
||||
p
|
||||
' <"${originalRoot}/${loaderDirectory}/${configurationFile}" >"${modifiedRoot}/${loaderDirectory}/${configurationFile}"
|
||||
|
||||
# bootMessage="boot.msg"
|
||||
# echo -n -e '\a' >"${modifiedRoot}/${loaderDirectory}/${bootMessage}"
|
||||
# cat "${originalRoot}/${loaderDirectory}/${bootMessage}" >>"${modifiedRoot}/${loaderDirectory}/${bootMessage}"
|
||||
|
||||
initrdImage="${temporaryDirectory}/initrd.img"
|
||||
initrdPath="${modifiedRoot}/${loaderDirectory}/initrd.img"
|
||||
gunzip -c "${initrdPath}" >"${initrdImage}"
|
||||
|
||||
initrdDescription="`file -b "${initrdImage}"`"
|
||||
case "${initrdDescription}"
|
||||
in
|
||||
*" ext2 "*) initrdType=ext2;;
|
||||
*" cpio "*) initrdType=cpio;;
|
||||
*) programError "unsupported initrd image format: ${initrdDescription}"
|
||||
esac
|
||||
|
||||
initrdRoot="${temporaryDirectory}/initrd"
|
||||
mkdir "${initrdRoot}"
|
||||
"mount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
initrdMounted=true
|
||||
|
||||
found=false
|
||||
for name in linuxrc init
|
||||
do
|
||||
linuxrcPath="${initrdRoot}/${name}"
|
||||
initPath="$(readlink "${linuxrcPath}")" && {
|
||||
found=true
|
||||
break
|
||||
}
|
||||
done
|
||||
"${found}" || programError "linuxrc not found."
|
||||
rm "${linuxrcPath}"
|
||||
ln -s /bin/brltty "${linuxrcPath}"
|
||||
|
||||
deviceDirectory="${initrdRoot}/dev"
|
||||
ensureDevices() {
|
||||
typeset type="${1}"
|
||||
typeset major="${2}"
|
||||
typeset minor="${3}"
|
||||
typeset prefix="${4}"
|
||||
typeset last="${5}"
|
||||
typeset suffix="${6}"
|
||||
typeset number=0
|
||||
while ((number <= last))
|
||||
do
|
||||
typeset path="${deviceDirectory}/${prefix}${suffix}"
|
||||
[ -e "${path}" ] || mknod -m 600 "${path}" "${type}" "${major}" "$((minor++))"
|
||||
suffix=$((++number))
|
||||
done
|
||||
}
|
||||
ensureDevices c 7 0 vcs 12
|
||||
ensureDevices c 7 128 vcsa 12
|
||||
ensureDevices c 5 1 console 0
|
||||
ensureDevices c 4 0 tty 12 0
|
||||
ensureDevices c 4 64 ttyS 3 0
|
||||
ensureDevices c 188 0 ttyUSB 1 0
|
||||
|
||||
case "${brlttyArchive}"
|
||||
in
|
||||
*.tar.gz|*.tgz)
|
||||
tar x -z -C "${temporaryDirectory}" -f "${brlttyArchive}"
|
||||
;;
|
||||
|
||||
*.tar)
|
||||
tar x -C "${temporaryDirectory}" -f "${brlttyArchive}"
|
||||
;;
|
||||
|
||||
*)
|
||||
programError "unsupported brltty archive name: ${brlttyArchive}"
|
||||
;;
|
||||
esac
|
||||
|
||||
shopt -s nullglob
|
||||
set -- ${temporaryDirectory}/brltty*
|
||||
[ "${#}" -eq 0 ] && programError "brltty build directory not found."
|
||||
brlttyBuildRoot="${1}"
|
||||
|
||||
brlttyInstallRoot="${temporaryDirectory}/install"
|
||||
(
|
||||
set -e
|
||||
trap "" 0
|
||||
cd "${brlttyBuildRoot}"
|
||||
|
||||
shopt -s nullglob
|
||||
set -- ./autogen*
|
||||
for autogen
|
||||
do
|
||||
[ -f "${autogen}" -a -r "${autogen}" -a -x "${autogen}" ] && "${autogen}"
|
||||
done
|
||||
|
||||
./configure --quiet --with-install-root="${brlttyInstallRoot}" \
|
||||
--with-init-path="${initPath}" --with-stderr-path="/dev/tty5" \
|
||||
--with-writable-directory="/tmp" \
|
||||
--with-screen-driver="lx,-all" \
|
||||
--with-braille-driver="-tt,-vr,${brailleDrivers}" \
|
||||
--with-text-table="${textTable}" \
|
||||
--disable-speech-support --without-libbraille --without-curses --disable-x \
|
||||
--disable-pcm-support --disable-fm-support --disable-midi-support \
|
||||
--enable-standalone-programs --disable-api --disable-gpm --disable-icu
|
||||
make -s -C Programs all
|
||||
strip Programs/brltty
|
||||
make -s -C Programs install-programs install-data-files install-tables
|
||||
) || exit "${?}"
|
||||
|
||||
"check_${initrdType}"
|
||||
(
|
||||
set -e
|
||||
cd "${brlttyInstallRoot}"
|
||||
cp --parents -- $(find . -type f -printf '%P ') "${initrdRoot}"
|
||||
) || exit 1
|
||||
|
||||
"${invokeShell}" && (
|
||||
set +e
|
||||
trap "" 0
|
||||
|
||||
cd "${temporaryDirectory}"
|
||||
"${SHELL:-/bin/sh}"
|
||||
exit 0
|
||||
)
|
||||
|
||||
initrdMounted=false
|
||||
"unmount_${initrdType}" "${initrdRoot}" "${initrdImage}"
|
||||
gzip -c -9 "${initrdImage}" >"${initrdPath}"
|
||||
|
||||
isoVolumeIdentifier="$(isoinfo -d -i "${originalImage}" | grep '^Volume id:' | cut -d' ' -f3-)"
|
||||
isoApplicationIdentifier="$(isoinfo -d -i "${originalImage}" | grep '^Application id:' | cut -d' ' -f3-)"
|
||||
mkisofs -quiet -J -R -T -boot-load-size 4 -boot-info-table -no-emul-boot \
|
||||
-A "${isoApplicationIdentifier}" -V "${isoVolumeIdentifier}" \
|
||||
-b "${loaderDirectory}/isolinux.bin" -c "${loaderDirectory}/boot.cat" \
|
||||
-o "${modifiedImage}" "${modifiedRoot}"
|
||||
exit 0
|
||||
@@ -0,0 +1,69 @@
|
||||
#!/bin/sh
|
||||
|
||||
set -e
|
||||
|
||||
# Make local mount points
|
||||
mkdir -p mnt1 mnt2
|
||||
# Mount bootdisk image read-only
|
||||
mount boot.img mnt1 -o loop,ro -t msdos
|
||||
# Get the initial ramdisk it contains
|
||||
cp mnt1/initrd.img .
|
||||
# Finished with boot image for now.
|
||||
umount mnt1
|
||||
# Unzip and mount it
|
||||
mv initrd.img initrd.gz
|
||||
gunzip initrd.gz
|
||||
# Prevent warning about having to check the filesystem
|
||||
tune2fs -c 0 -i 0 initrd >/dev/null
|
||||
mount initrd mnt2 -o loop
|
||||
|
||||
# Work in initial ramdisk
|
||||
# Rename it's init
|
||||
mv mnt2/sbin/init mnt2/sbin/init_real
|
||||
# Put BRLTTY on it
|
||||
cp brltty mnt2/sbin
|
||||
# New init is a link to BRLTTY
|
||||
ln -s brltty mnt2/sbin/init
|
||||
# Help files and tables (if the person isn't familiar...)
|
||||
if [ -d etcbrltty ]; then
|
||||
mkdir -p mnt2/etc/brltty
|
||||
install etcbrltty/* mnt2/etc/brltty
|
||||
fi
|
||||
# Make sure some needed device files are present
|
||||
# ttyS0 ttyS1 tty0
|
||||
for i in ttyS0 ttyS1 tty0; do
|
||||
if [ ! -e mnt2/dev/$i ]; then
|
||||
cp -a /dev/$i mnt2/dev/$i
|
||||
chown root:root mnt2/dev/$i
|
||||
fi
|
||||
done
|
||||
# vcsa or vcsa0
|
||||
# NB this doesn't handle devfs...
|
||||
if [ ! -e mnt2/dev/vcsa -a ! -e mnt2/dev/vcsa0 ]; then
|
||||
for i in vcsa vcsa0; do
|
||||
if [ -c /dev/$i ]; then
|
||||
if [ -h /dev/$i ]; then
|
||||
tgt="`readlink /dev/$i`"
|
||||
# This assumes the link is relative...
|
||||
if [ -c /dev/$tgt ]; then
|
||||
cp -a /dev/$tgt mnt2/dev
|
||||
else
|
||||
echo "Failed to get link target of /dev/$i"
|
||||
echo "Failed!!"
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
cp -a /dev/$i mnt2/dev
|
||||
fi
|
||||
done
|
||||
fi
|
||||
if [ ! -e mnt2/dev/vcsa -a ! -e mnt2/dev/vcsa0 ]; then
|
||||
echo "Failed to create mnt2/dev/vcsa"
|
||||
echo "Failed!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Done with initial ramdisk. wrap it up.
|
||||
umount mnt2
|
||||
gzip -9 initrd
|
||||
mv initrd.gz myroot.img
|
||||
Reference in new issue
Block a user