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>
Add audio group to the target skeleton.
Some multimedia applications based on alsa-lib need it.
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Allow root login on the Cirrus ep93xx ARM AMBA serial ports.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Closes#2929
Instead of just adding a fixed amount to the blocks used, try to
estimate the real space needed according to the filesystem structure
(bitmaps, inodes, blocks).
The side effect of this is that we no longer significantly overestimate
the size needed for small file systems.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Recent kernels (2.6.37*) use a different name for OMAP serial ports.
They are no longer called ttySx but ttyOx.
Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Those folders are currently created using makedevs according to the
specifications in device_table.txt. However, as makedevs is no longer
executed when dynamic device creation methods are selected (devtmpfs,
udev, mdev), those folders must be created differently. We choose to
put them directly into the default filesystem skeleton.
Signed-off-by: Yegor Yefremov <yegor_sub1@visionsystems.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Since udhcpc is part of busybox, it seems logical to move the udhcpc
script from skeleton to busybox.
[Peter: only install if not available in skeleton]
Signed-off-by: Lionel Landwerlin <llandwerlin@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Use rootfs-* rather than *-root, to match the convention used under
package/ and which fits with the ROOTFS_*_ variables.
This will also help with the host dependencies.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The -e test will dereference the symlink, so if there is no /bin/init,
we will constantly try to create the symlink. So rather than error on
subsequent runs when the link exists, use the force flag to ln.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This used to be needed when the filesystem code was rewritten, but not
the Linux compilation code. Now that the Linux compilation code has
been rewritten, the mechanism to ensure that initramfs gets built
*before* the kernel so that it can be integrated is different, and
this INITRAMFS_TARGET variable is no longer used.
See f507921d39 for details.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
It contains a bunch of semi-random aliases confusing users, and sets
a bunch of environment variables which are already provided by bash by
default.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Set image file permissions to 0644 like it was before the fs rework,
instead of the rather unhelpful 0700 (E.G. when image is used for tftp).
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
In Buildroot, the kernel is built and installed *before* the root
filesystems are built. This allows the root filesystem to correctly
contain the kernel modules that have been installed.
However, in the initramfs case, the root filesystem is part of the
kernel. Therefore, the kernel should be built *after* the root
filesystem (which, in the initramfs case simply builds a text file
listing all files/directories/devices/symlinks that should be part of
the initramfs). However, this isn't possible as the initramfs text
file would lack all kernel modules.
So, the solution choosen here is to keep the normal order: kernel is
built before the root filesystem is generated, and to add a little
quirk to retrigger a kernel compilation after the root filesystem
generation.
To do so, we add a ROOTFS_$(FSTYPE)_POST_TARGETS variable to the
fs/common.mk infrastructure. This allows individual filesystems to set
a target name that we should depend on *after* generating the root
filesystem itself (contrary to normal ROOTFS_$(FSTYPE)_DEPENDENCIES,
on which we depend *before* generating the root filesystem).
The initramfs code in fs/initramfs/initramfs.mk uses this to add a
dependency on 'linux26-rebuild-with-initramfs'.
In linux/linux.mk, we do various things :
* If BR2_TARGET_ROOTFS_INITRAMFS is enabled (i.e if initramfs is
enabled as a root filesystem type), then we create an empty
rootfs.initramfs file (remember that at this point, the root
filesystem hasn't been generated) and we adjust the kernel
configuration to include an initramfs. Of course, in the initial
kernel build, this initramfs will be empty.
* In the linux26-rebuild-with-initramfs target, we retrigger a
compilation of the kernel image, after removing the initramfs in
the kernel sources to make sure it gets properly rebuilt (we've
experienced cases were modifying the rootfs.initramfs file wouldn't
retrigger the generation of the initramfs at the kernel level).
This is fairly quirky, but initramfs really is a special case, so in
one way or another, we need a little quirk to solve its specialness.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The common filesystem infrastructure in fs/common.mk uses a smart
combination of makedevs and fakeroot to create the device files in the
target filesystem images without being root. This technique is applied
to all filesystem formats that rely on this common infrastructure, and
JFFS2 is one of them.
Therefore, using the -D option of mkfs.jffs2, which allows to specify
a device table, is redundant with the usage of makedevs. And it is
worst than redundant: for some reason, -D does not create all device
files with the correct major and minor numbers, as reported in
bug #1771.
For coherence, we just remove the usage of mkfs.jffs2 -D option, and
rely on makedevs/fakeroot to create the device files.
This commit fixes bug #1771.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
When initramfs was ported to the new fs structure the init symlink
macro was defined, but forgot to add it to PRE_GEN_HOOKS
Signed-off-by: Will Wagner <will_wagner@carallon.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The restructure for building root filesystems changed the target name
for the initramfs file, to build the file the trget is now
initramfs-root but the generated file is rootfs.initramfs
Signed-off-by: Will Wagner <will_wagner@carallon.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
With the ROOTFS_TARGET conversion, EXT2_OPTS gets evaluated very early
(before TARGET_DIR is populated with files), so the calculated
blocks/inodes numbers are wrong.
Fix it by moving the calculation to a shell script wrapper around
genext2fs, so it only gets executed just before genext2fs runs.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
BR2_TARGET_ROOTFS_EXT2_RESBLKS is an int, so test against 0 rather than
the empty string - Otherwise the test is always true and a -m option
without arguments is added to the argument list, causing genext2fs to
get confused.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Until now, the location of the device table was specified by a
variable in board Makefiles. Unfortunately, this variable is not
accessible from fs/common.mk, since the target/ code is included
*after* fs/common.mk.
Anyway, the general idea is to move away from these boards Makefile,
and provide configuration option for things like the device table
location.
Therefore, this patch adds a BR2_ROOTFS_DEVICE_TABLE option which
allows to specify which device table should be used.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The dependency on gzip, bzip2 and lzma are properly handled
automatically. No need to tell the user about this.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
