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udevil/README
IgnorantGuru 95d0fde464 finalize 0.2.4
2012-05-28 10:57:23 -06:00

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README for udevil v0.2.4 ALPHA TEST VERSION
THIS RELEASE IS FOR INITIAL TESTING PURPOSES ONLY - USE AT YOUR OWN RISK.
Please test functions carefully before relying on them.
For updates and instructions visit:
http://ignorantguru.github.com/udevil/
http://ignorantguru.github.com/udevil/news.html
CONTENTS
DESCRIPTION
PACKAGES
INSTALLER
BUILD
BUILD NEXT
CREATE DEB PACKAGE
POST INSTALL
Kernel Polling
Set SUID
Networks and Files
FTP Support
NTFS-3G
ENABLE KERNEL POLLING
UNINSTALL
TRANSLATIONS
LICENSE
DESCRIPTION
Mounts and unmounts optical and removable devices without a password (set
suid), shows device info, monitors device changes. Emulates mount's and
udisks's command line usage and udisks v1's output. Includes the devmon
automounting daemon.
Run 'udevil --help' for usage. See /etc/udevil/udevil.conf for config.
http://ignorantguru.github.com/udevil/udevil--help.html
http://ignorantguru.github.com/udevil/udevil.conf.txt
PACKAGES
Arch's AUR includes udevil-git:
https://aur.archlinux.org/packages.php?ID=59463
Debian-based deb packages are provided in Downloads:
(to save a file, click on its filename and click 'View Raw'):
https://github.com/IgnorantGuru/udevil/tree/master/packages
and are also available in the author's PPA:
http://igurublog.wordpress.com/downloads/ppa/
These convenience deb packages contain the source code and will build
and install udevil automatically on most Debian-based distros.
$TMPDIR (usually /tmp) must NOT be mounted noexec for the installation.
Or see CREATE DEB PACKAGE below to easily build a binary package.
For signatures and SHA256 sums see
http://ignorantguru.github.com/udevil/udevil.SHA256.txt
Other: See INSTALLER below
NOTE: See POST INSTALL section below for post-installation steps.
INSTALLER
A self-extracting installer is available (udevil-x.x.x-installer.sh):
https://github.com/IgnorantGuru/udevil/tree/master/packages
(To save a file, click on its filename and click 'View Raw')
The installer requires the build dependencies listed below in BUILD. If
any dependencies are missing, examine the error, install missing packages,
and try again.
The installer MUST be run in a terminal. It automatically builds and
installs. Run it like this:
bash udevil-x.x.x-installer.sh
or to see options:
bash udevil-x.x.x-installer.sh --help
To reinstall or upgrade, just run the latest installer again.
NOTE: See POST INSTALL section below for post-installation steps.
BUILD
1) Install required build dependencies (below are Debian package names -
packages names on your distro may vary but should be similar):
libglib2.0-0 libglib2.0-dev libudev0 (>=143) libudev-dev
autotools-dev build-essential fakeroot intltool pkg-config
Also recommended if using devmon: eject zenity
configure will report anything missing when you run it as shown below.
2) Use these commands to download the udevil tarball and build:
# Download & Extract
mkdir /tmp/udevil-build && cd /tmp/udevil-build
wget -O udevil.tar.gz https://github.com/IgnorantGuru/udevil/tarball/master
tar xzf udevil.tar.gz
cd IgnorantGuru-udevil-*
# Build & Install
./configure
make
sudo make install
# Remove Temporary Files
cd / && rm -rf /tmp/udevil-build
NOTE: If configure reports missing dependencies, install them and run
configure again before proceeding to make.
NOTE: See POST INSTALL section below for post-installation steps.
BUILD NEXT
The git 'next' branch of udevil is a work in progress which eventually
becomes the next release version. The next build is less stable in
general, and functions may be incomplete. To build from this branch,
install the required build dependencies listed above in BUILD, then:
# Download & Extract
mkdir /tmp/udevil-next && cd /tmp/udevil-next
wget -O udevil-next.tar.gz https://github.com/IgnorantGuru/udevil/tarball/next
tar xzf udevil-next.tar.gz
cd IgnorantGuru-udevil-*
# Build, & Install
./autogen.sh # pass desired configure options (if any) here to autogen.sh
make
sudo make install
# Remove Temporary Files
cd / && rm -rf /tmp/udevil-next
CREATE DEB PACKAGE
To build a deb file of udevil on your Debian-based distro:
1) Install build dependencies (see BUILD section above) plus 'debhelper'.
2) Use these commands to download and extract the SpaceFM tarball:
mkdir /tmp/udevil-build && cd /tmp/udevil-build
# Note: you can change "master" to "next" if you want the next branch:
wget -O udevil.tar.gz https://github.com/IgnorantGuru/udevil/tarball/master
tar xzf udevil.tar.gz
cd IgnorantGuru-udevil-*
3) Build package: (the package files will appear in the parent directory)
dpkg-buildpackage -b -uc
cd .. && rm -rf IgnorantGuru-udevil-* udevil.tar.gz
4) To install the package you built:
dpkg -i udevil*.deb
POST INSTALL
Kernel Polling
--------------
You may need to enable kernel polling for device media to be detected by
udevil. See ENABLE KERNEL POLLING section below.
Set SUID
--------
After installing udevil, /usr/bin/udevil should have the suid bit already
set. If not, set it like this:
sudo chown root:root /usr/bin/udevil
sudo chmod u+s,go-s,ugo+x /usr/bin/udevil
ls -l /usr/bin/udevil
-rwsr-xr-x 1 root root 226625 May 22 08:13 /usr/bin/udevil
OR, to restrict execution of udevil to the 'plugdev' group only:
sudo chown root:plugdev /usr/bin/udevil
sudo chmod u+s,go-s,o-x /usr/bin/udevil
ls -l /usr/bin/udevil
-rwsr-xr-- 1 root plugdev 226625 May 22 08:13 /usr/bin/udevil
OR, if you don't want to use udevil for mounting, you can unset suid:
sudo chown root:root /usr/bin/udevil
sudo chmod ugo-s,ugo+x /usr/bin/udevil
ls -l /usr/bin/udevil
-rwxr-xr-x 1 root root 226625 May 22 08:13 /usr/bin/udevil
You can also limit users and groups by editing /etc/udevil/udevil.conf
Networks and Files
------------------
By default, /etc/udevil/udevil.conf is set to allow only normal fileystems
to be mounted, with mounting of networks and files disallowed. To allow
networks and files to be mounted, in /etc/udevil/udevil.conf set:
allowed_types = $KNOWN_FILESYSTEMS, smbfs, nfs, ftpfs, curlftpfs, file
FTP Support
-----------
To mount 'ftp://' URLs with udevil, you also need curlftpfs installed:
http://linuxconfig.org/mount-remote-ftp-directory-host-locally-into-linux-filesystem
OR you need the ftpfs kernel module:
http://www.techrepublic.com/article/mount-ftp-volumes-locally-with-ftpfs/5031896
NTFS-3G
-------
If ntfs filesystems aren't mounted writable, you may need to configure your
system to mount ntfs with ntfs-3g (on some distros this is already done).
For example:
sudo ln -s /sbin/mount.ntfs-3g /sbin/mount.ntfs
# OR if mount.ntfs-3g is located in /usr/bin:
sudo ln -s /usr/bin/mount.ntfs-3g /usr/bin/mount.ntfs
ENABLE KERNEL POLLING
You may need to enable kernel polling for device media to be detected by
udevil. For example, if you insert a CD and udevil's monitor command
doesn't report a change to the device, or udevil doesn't see a filesystem
on the device, this is a symptom that kernel polling is not enabled.
Kernel polling is a new feature of the Linux kernel and udev, so most
distros don't yet have it enabled. Even if you are using udisks, enabling
kernel polling is recommended to eliminate the need for udisks to do
userspace polling. Kernel polling also corrects a common issue where the
eject button on a drive won't respond with the newer udev.
To use kernel polling, your Linux kernel needs to be 2.6.38 or newer, and
udev must be version 173 or newer.
TO DETERIME IF KERNEL POLLING IS ENABLED, run these commands:
cat /sys/module/block/parameters/events_dfl_poll_msecs
cat /sys/block/sr0/events_poll_msecs
If you get 0 or -1 from those commands, then it's probably disabled.
TO ENABLE KERNEL POLLING TEMPORARILY, enable common polling for the block
module:
sudo bash -c 'echo 2000 > /sys/module/block/parameters/events_dfl_poll_msecs'
Any number between 2000 and 5000 (milliseconds) should be reasonable - the
higher 5000 means poll every 5 seconds, which is less overhead but a little
slower.
OR you can enable polling just for a single device like this (/dev/sr0 in
this example):
sudo bash -c 'echo 2000 > /sys/block/sr0/events_poll_msecs'
The change should be immediate - media will be detected and the eject
button on the drive should work normally again. However, the above changes
will be lost when you reboot.
TO MAKE POLLING PERMANENT (survives a reboot), add one of the above
commands to your /etc/rc.local file (anywhere before the 'exit' line in
that file), like this (without the sudo):
echo 2000 > /sys/module/block/parameters/events_dfl_poll_msecs
OR you can pass this option to the kernel boot command line in grub:
block.events_dfl_poll_msecs=2000
References:
http://www.mail-archive.com/lfs-dev@linuxfromscratch.org/msg15714.html
http://blogs.gentoo.org/mgorny/2011/06/20/uam-can-now-mount-cds-and-dvds/
https://bugs.archlinux.org/task/25609
UNINSTALL
If you installed from a package, use your package manager to remove udevil.
Otherwise, extract the tarball and enter the directory containing
configure:
# first run configure with your original options if needed:
./configure
sudo make uninstall
# Note: /etc/udevil/ is not automatically removed
TRANSLATIONS
udevil is not yet ready for translators - please check back soon.
LICENSE
udevil - Copyright (C) 2012 GPL3
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
USE AT YOUR OWN RISK. This program is distributed in the hope that it
will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
See COPYING file.
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