A /dev/console node must be present in rootfs when the Linux kernel
boots otherwise the kernel will print the following warning:
"Warning: unable to open an initial console"
This is because when we use an initramfs the /dev directory is not
populated at this point. This can cause problems when a program
(e.g ldso with early debugging enabled) opens a standard file
descriptor for read/write before these descriptors are actually
created by the init process later on.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
A very common mistake done by our users is that they use
output/target/ directory as their root filesystem. Even though this is
loudly documented in our Buildroot manual, people don't read
documentation, so it is not sufficient.
This patch adds a text file named
output/target/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM which explains why
output/target isn't appropriate to use as the root filesystem. The
process is:
* At the beginning of the build, right after the skeleton has been
copied, support/misc/target-dir-warning.txt is copied to
output/target/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
* In the filesystem images creation code, this file is removed before
launching fakeroot, and restored right after that, so that this
file is not present in the generated root filesystem images.
Note that the file has not been added to the default skeleton for two
reasons:
* It would have annoying to have in our source tree a file named in
capital letters inside system/skeleton/
* The proposed way works even if the user uses a custom skeleton.
[Peter: fixed typo]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Juha Lumme <juha.lumme@gmail.com>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The ext2 initrd is pretty broken, because it requires an additional
root=/dev/ram0 command line parameter, and a /init to mount
devtmps that isn't there in out ext2 rootfs. So just use a cpio
instead.
Note that there is no check if the kernel supports initramfs or the
selected compression method.
Also removed a bit of dead code in iso9660.mk.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Recent mails on the list show that it is not very clear how to create
an initial RAM fs with buildroot. So make this more explicit in the
cpio and initramfs help texts. Hopefully this will reduce the /init
debugging we have to do.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This directory groups the following elements:
* the default root filesystem skeleton
* the default device tables
* the Config.in options for system configuration (UART port for
getty, system hostname, etc.)
* the make rules to apply the system configuration options
Even though the skeleton and device tables could have lived in fs/, it
would have been strange to have the UART, system hostname and other
related options into fs/. A new system/ directory makes more sense.
As a consequence, this patch also removes target/Makefile.in, which
has become useless in the process.
[Peter: fixup TARGET_SKELETON settings / documentation to match]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Defaulting to UTC (which is what uClibc will default to when /etc/TZ is
missing) seems more sensible than US Mountain Time Zone in the default
rootfs skeleton.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
echo -e is not a portable way to do this, better use printf.
Works with MacOS X.
Signed-off-by: Waldemar Brodkorb <mail@waldemar-brodkorb.de>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The www-data user is defined in fs/skeleton/etc/passwd, with gid 33. But
gid 33 is not present in the group file.
Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
There used to be a mechanism using which packages could leave a
.fakeroot.<something> file which could contain commands to be executed
within the fakeroot environment. Since this mechanism is no longer
used by any package, remove it from the common infrastructure.
The latest user was nfs-utils, which used this mechanism to do the
"make install" as root, since doing otherwise was not supported. But
since 16e7b8255c, nfs-utils has been
upgraded and converted to the package infrastructure, and this hack is
no longer necessary. Another past user was the ltp-testsuite package,
for the same reason, and since
a72a670489, the fakeroot hack is no
longer needed.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Systemd introduced a new policy described here:
http://lists.freedesktop.org/archives/systemd-devel/2011-March/001823.html
Add the "lock" group to buildroot to allow systemd to set this in place
at boot time
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
As systemd checks if /etc/mtab is a symlink to /proc/mount or
/proc/self/mounts, we need to change it so that we can run systemd.
http://cgit.freedesktop.org/systemd/tree/src/main.c#n1082
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
There are a couple of Renesas SH devices with 8 serial ports used.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Add a way for packages to declare files they need instead of relying
only on device tables, which creates files no matter if the package is
indeed enabled, as we can see for busybox.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit follows commit ad501b66. Start up of the busybox logging
daemons were moved to an init script but the shutdown were still
performed in inittab. This commit moves the shutdown policy to an
rcK script that calls the stop function of all the init scripts in
a reversed order.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
For custom projects, it is more maintainable to add custom profile settings
in a separate file, than directly in /etc/profile.
This patch modifies /etc/profile to read in *.sh files from /etc/profile.d/,
a technique commonly used in Linux distributions.
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Cramfs still passes the device table to mkcramfs, which is irrelevant
now with fakeroot, remove this behaviour and the associated patch.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
An initramfs is in fact the same as a cpio archive, but embedded in
the kernel. So instead of duplicating the cpio infrastructure,
we can simply build images/rootfs.cpio and link that into the
kernel.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Devtmpfs doesn't get automounted by the kernel when an initramfs is used.
Since cpio archives are used almost exclusively as an initramfs, the same
fix should be applied to it as for the initramfs.
Cfr. commit 424888e474 and
10a130f91e.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
As the kernel doesn't automatically mount devtmpfs when an initramfs
is used, commit 424888e474 has
introduced a small wrapper script that mounts devtmpfs before starting
the real init.
Unfortunately, the problem is that in this case, the init process runs
without any 0, 1 and 2 file descriptors, so none of the
messages/errors printed by the various initialization scripts can be
seen. This is due to the fact the init process relies on 0, 1 and 2
being opened by the kernel before init is started. However, as
/dev/console isn't present on the filesystem at the time the kernel
tries to open the console to create the 0, 1 and 2 file descriptors,
the kernel fails on this and prints the famous "Warning: unable to
open an initial console".
The proposed workaround is to actually open 0, 1 and 2 to /dev/console
in the wrapper script, right after mounting the devtmpfs filesystem,
and before starting the real init. The "Warning" from the kernel is
still shown, but at least the messages from the init scripts are
visible.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
As discussed here:
http://lists.busybox.net/pipermail/buildroot/2011-May/043251.html
Add BR2_ROOTFS_STATIC_DEVICE_TABLE for the extra device table file(s)
to create device nodes in /dev, rather than complicated logic in
BR2_ROOTFS_DEVICE_TABLE, making it complicated to move between static
and dynamic modes.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Devtmpfs (which is used by devtmpfs/mdev/udev options) doesn't get
automounted by the kernel when an initramfs is used, causing boot
failures when a dynamic /dev is used.
Fix it by adding a pre-init script to mount devtmpfs before running init.
Reported-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
sh2eb and sh2a_nofpueb gnuconfig targets are no longer supported
in Buildroot. This patch replaces these Buildroot targets with sh2
and sh2a respectively, and adds sh4a targets as these are widely
used.
To build for devices without an fpu, the relevant toolchain flags
will have to be specified.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
iso9660 used LINUX26_IMAGE_PATH, which got renamed. Adjust to match
the new name.
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Hardcodes policy, is not critical, and people might not have tty3
(E.G. virtual consoles) available.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The logging mechanism startup being in inittab, it isn't easy to
overcharge the default policy. With this patch, the startup of the
syslog daemon is moved to an init.d script, that can easily be
overwritten.
[Peter: use install -D]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The /dev/shm directory is neither created nor mounted as tmpfs as boot
time. This will cause troubles when using named semaphores on the
system.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Instead of the current mix between system config and filesystem menus.
At the same time rename 'Target filesystem options' menu to
'Filesystem images' as it now only contains options about image formats.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The special marker in etc/inittab might not be present with a custom
skeleton. At the same time make the option always active, remove the
hardcoded tty1/tty2 gettys and reword the option description slightly.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This allows to have a device table for all directories/files and
another device table for the device files themselves. Both are needed
for static /dev, but only the first one is needed when
devtmpfs/mdev/udev are used.
We take this opportunity to move the documentation of the device table
format in a common location, package/makedevs/README.
[Peter: simplify code slightly, fix indentation]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Four methods for the creation of device files in /dev are now
proposed:
- static method uses device table as before
- devtmpfs method enables this feature in kernel
- mdev method adds mdev starting script to the file system
and selects mdev itself for installation
- udev method selects udev for installation
All dynamic methods are based on devtmpfs, so one doesn't need to care
about /dev folder.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Readd legacy LZMA support since older patched kernels might be using it.
Introduce an XZ target filesystem option for the new format.
[Peter: add a seperate xz target for squashfs-target as well]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
inittab ordering causes mount to fail on remount,rw. inittab
changed to mount /proc first.
Signed-off-by: Andy Kennedy <Andy.Kennedy@AdTran.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The generic fs handling does a chmod -R 0:0 $(TARGET_DIR), so there's no
need for a specific option to enforce this when making an ext2fs image.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This way we'll get something in images/ by default, and hopefully people
will be less likely to try to use target/ directly.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
It's pretty uncommon to use ext2fs on embedded systems, so don't enable
it by default.
Adjust defconfigs to match.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
UBI images are generated from UBIFS one (with ubinize tool) and are used by
bootloaders (eg U-Boot) to write UBIFS images directly on bare NAND FLASH
(see http://www.linux-mtd.infradead.org/faq/ubi.html).
[Peter: tweak help text]
Signed-off-by: Julien Boibessot <julien.boibessot@armadeus.com>
Signed-off-by: Nicolas Colombain <nicolas.colombain@armadeus.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
