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newer kernels
udev has started to fail on new kernels (4.4), due to being deprecated in favor
of systemd's udev implementation. To maintain a sysvinit alternative we also
need to provide an alternative to udev. Eudev is a fork of systemds udev,
this new eudev recipe provides upstream udev 220 funcitonality.
- Removes patches that dont apply anymore
- ToDo: eudev-ptest?
[YOCTO #8998]
Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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These 2 patches are needed to build udev with the 4.4 kernel, the first
mtd-probe adds back a stdint.h header that was removed in the kernel's mtd-user.h
header file.
The second adds a check for a new header and sets a Makefile variable
to determine which header to use for the new kernel vs older kernels.
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Fix a variety of problems such as typos, bad punctuations, or incorrect
Upstream-Status values.
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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If an error occurs while the udev cache is being populated, the system
is left in a state where udev is stopped. Remedy this with a clean up
function to restart udev and remove any intermediate files.
Signed-off-by: Ken Sharp <ken.sharp@ni.com>
Reviewed-by: Ben Shelton <ben.shelton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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xargs already formats the inputs to tar correctly, so the
'-T -' argument to tar is unnecessary.
Signed-off-by: Ken Sharp <ken.sharp@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Since udev version 176 (udev commit 06316d9) udev switched modprobe
explicit rules by the builtin kmod support.
The rule using the builtin kmod support is in
'/lib/udev/rules.d/80-drivers.rules':
DRIVER!="?*", ENV{MODALIAS}=="?*", IMPORT{builtin}="kmod load $env{MODALIAS}"
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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stat command from stat package doesn't support '-L' option, so avoid
using it to get rid of boot errors like below.
Populating dev cache
stat: invalid option -- 'L'
Usage: stat [-l] [-f] [-s] [-v] [-h] [-t] [-c format] file1 [file2 ...]
[YOCTO #7210]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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Only unpack udev's testdata right before executing the tests and cleanup
afterwards.
udev's testsuite can be used by ptest. However currently the testdata against
which its functionality is tested is installed in the sysroot at udev install
time.
If the sysroot is used with qemu the testdata makes qemu entering an infinite
loop.
http://lists.openembedded.org/pipermail/openembedded-core/2014-September/097098.html
This has already been fixed for the systemd udev flavour.
https://bugzilla.yoctoproject.org/show_bug.cgi?id=5664
Signed-off-by: Max Krummenacher <max.oss.09@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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The ptest which checks for correct udev rules fails.
Missing files and paths for the build host caused this.
Signed-off-by: Max Krummenacher <max.oss.09@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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Most of /etc/init.d/udev-cache is in a conditional block which can be
replaced by a `[ ... ] || exit 0` to reduce nesting.
This also provides an opportunity to add some additional messages
when VERBOSE is set.
Capture and report errors encountered in the cache generation process,
using set -e and trap EXIT. These errors were previously being ignored.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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Don't hold up the boot while the cache is being updated.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
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Presently, the cache is not regenerated if udev rules are modified,
which may cause the cache to preserve an old configuration. To fix,
include the size, mtime, and filename of all udev rules in the system
configuration.
This change requires `stat`. If busybox supplies stat,
CONFIG_FEATURE_STAT_FORMAT must be enabled.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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Failure to use the udev cache is a significant enough impact to
the boot time (possibly seconds) that it should always be
reported on the console, regardless of the VERBOSE setting.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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Replace a bunch of echo's with a single cat<<EOF. Take this opportunity
to more clearly communicate what is going on with the cache and what
files are being looked at.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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The current system configuration needs to be generated both inside
udev (to compare against the cached system configuration) and
udev-cache (to regenerate the cached system configuration). Use a single
function definition for this task, duplicated across both initscripts.
This also allows administrators to modify it for machine-specific
requirements.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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The udev initscript signals udev-cache to run by generating a new
sysconf; but udev-cache now overwrites that with its own copy. To
eliminate the needless sysconf generating in udev, we instead trigger
udev-cache to run by touching a new file $DEVCACHE_REGEN.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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Currently, udev-cache system configurations are compared as shell string
variables, read into memory with the readfiles() function. This is more
complex, and significantly (27-41%) slower, than comparing them using
`cmp`. (Performance was verified on both Cortex-A9 and Intel Nehalem
systems.)
So just use cmp. This requires a few other small changes:
exclude /proc/atags from CMP_FILE_LIST if it doesn't exist to avoid
errors in `cat` and `cmp`.
`cmp -q` doesn't exist in busybox, so instead, redirect output to
/dev/null.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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The validity of the udev cache is determined by the sysconf
file (/etc/udev/cache.data). Currently, there is a substantial delay
between sysconf generation in /etc/init.d/udev and cache generation in
/etc/init.d/udev-cache. If a hotplug event arrives in the middle of
this, then the sysconf will be out of date with respect to the cache.
The solution is two-pronged. First, we minimize the race window by
regenerating the sysconf immediately before the cache, in
/etc/init.d/udev-cache. This allows us to kill the race entirely by
stopping the udev event queue while the sysconf and cache are being
generated.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
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Make sure that /proc/sys/kernel/hotplug exists before trying to disable
the uevent-helper mechanism.
Since kernel commit 86d56134f1b6 ("kobject: Make support for
uevent_helper optional.") the kernel can be built without uevent-helper
support. In this case /proc/sys/kernel/hotplug does not exist and the
current sysvinit script fails with
/etc/rcS.d/S04udev: line 132: can't create /proc/sys/kernel/hotplug: nonexistent directory
when trying to disable the uevent-helper mechanism during boot.
Note that a single NULL-character has always been sufficient to disable.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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The udev-cache facility uses files that represent system states, to
ensure that the cache tarball is valid to apply. These paths were
hardcoded in several places; collect them into SYSCONF_CACHED and
SYSCONF_TMP.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Previous changes should obviate all known spurious errors coming out of
tar. Since real extraction failures can and will occur, stop redirecting
stdout/stderr to /dev/null.
Take this opportunity to also remove an unnecessary subshell.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Archiving sockets causes tar to report an error and return a nonzero
exit status. Archiving a mounted filesystem is harmless, but may greatly
bloat the size of the cache tarball, and wastes time on boot.
To fix these issues, use `find` to only include the files we want, which
are the file types that udev will create (block/char devices and
symlinks) that are on the same filesystem as /dev.
While we're at it, remove a subshell by archiving /dev as an absolute
path. However, `tar` will complain about stripping the leading slash on
stderr. To inhibit this, `cut` out the leading slash.
An alternative solution is to use `tar --exclude`, but that is modestly
more brittle, since we'd need to explicitly list every socket and
filesystem to exclude. Note that `tar --one-file-system` is
GNU-specific, and tar implementations generally have nothing equivalent
to `find -type`.
If using busybox `find`, this change requires CONFIG_FEATURE_FIND_TYPE=y
and CONFIG_FEATURE_FIND_XDEV=y. If using busybox `tar`, this change
requires CONFIG_FEATURE_TAR_FROM=y.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Under normal udev operation, device nodes are obviously timestamped
based on the system time at current boot. However, when using
udev-cache, they are timestamped from a previous boot.
The existence of machines lacking RTCs makes this more than a cosmetic
issue: if the current time is set further on in the boot, so that the
system time is still 1970 by the time the cache is extracted, tar will
print a timestamp warning for every extracted file (potentially hundreds
of them).
To fix, use -m on extract.
If using busybox `tar`, this commit requires
CONFIG_FEATURE_TAR_NOPRESERVE_TIME=y.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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"/etc/dev.tar.gz" doesn't adequately imply that udev-cache maintains it.
Instead, call it "/etc/udev-cache.tar.gz".
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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$DEVCACHE is observed to be 100k uncompressed; compressing it reduces
its size to ~5k. But compress it outside of `tar` so that archival
operation takes as little time as possible, to minimize the risk of
devices being created/removed during execution.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Overwriting the tarball in-place could cause a partial write, if the
system stops at an inopportune time. This is mitigated by first writing
to a temporary file, then moving that file on top of the final location.
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Mariadb postinstall will fail with:
ERROR: 1 Can't create/write to file '/tmp/#sql_a2a_0.MAI' (Errcode: 13)
140814 8:14:06 [ERROR] Aborting
/tmp is a link to /var/volatile/tmp, set as:
drwxr-xr-x 3 root root 60 Aug 14 08:07 .
populate-volatiles.sh does not create the directory or set
permissions, because it already exists:
Checking for -/var/volatile/tmp-.
Creating directory -/var/volatile/tmp-.
Target already exists. Skipping.
Traced the creation to the initfile in udev. Create with -m 1755
to be sure. With this patch applied, mysql postinst succeeds and
creates the neccesary user tables.
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Add a '\n' to the last line of the file to fix:
No newline at end of file
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Force probing of "platform" bus by default.
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Make probing of "platform" bus conditional based on PROBE_PLATFORM_BUS
variable from /etc/default/udev-cache on subsequent boots when udev
cache is used. PROBE_PLATFORM_BUS has to be set to "yes" in order to
force probing on every boot, otherwise it uses the old default behaviour
of probing it just the first time.
This is helpful on modern SoCs where most of the low level peripheral
drivers are registered on the platform bus and need to be probed to load
the necessary modules and enable the connected buses and subsystems.
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Install udev test suite and run it as a ptest.
Signed-off-by: Alexandra Safta <alexandra.safta@enea.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Adjust the boot sequence in sysvinit based systems.
The mountall.sh (mounting the local file system) needs to be started
before udev and bootlogd.
This patch makes mountall.sh start before udev and removes the hack of
mounting tmpfs in the udev init script.
This patch also adds some comments to the udev init script to make it
clear why we create the '/var/volatile/tmp' directory.
[YOCTO #5273]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Since udev 174 udev has been running input_id as a built-in command and
setting this value in the environment for touchscreens. Use this logic
to detect when to make a touchscreen0 symlink.
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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* While working with a new capacitive touchscreen it was found
that the existing udev rule that creates the
/dev/input/touchscreen0 symlink was too restrictive and did not
match the MODALAIS entry for this touchscreen. which is:
MODALIAS=input:b0018v0000p0000e0000-e0,1,3,k14A,ra0,1,2F,35,36,39,mlsfw
* By looking at the input_print_modalias function in the Linux
kernel drivers/input/input.c file and referencing the meaning
of the evbits and attributes of the input_dev structure it seems
that for identification of a touchscreen the match with ,18
which was matching part of the absbit structure is overkill.
* It seems that the absbit entry is used for devices like
touchscreens and if that the the "a" is followed by 0 and 1 this
is sufficient.
* So the logic has now been changed to check for the "e" 0 and 3
values which correspond to EV_SYN and EV_ABS, then check for
the "a" attribute with 0 and 1.
* More information and history for this can be found at:
http://patchwork.openembedded.org/patch/25093/
http://thread.gmane.org/gmane.comp.handhelds.openembedded.core
* This patch mirrors a patch done by:
Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Chase Maupin <Chase.Maupin@ti.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Some of the external USB devices has internal USB hub, which
make them look like "fixed" rather than "removable". And USB
autosuspend does not work with some of these devices resulting
in inoperable pointing device.
Now the code detect these false "fixed" devices by looking at their
parents. If any of their parent is "removable", then USB autosuspend
is not enabled for that device, which keeps the pointing device
functional.
Fixes bug:
[YOCTO #5166]
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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At some point, the udev was modified to source the functions from
initscripts or lsbinitscripts. This dependency is actually not needed.
If we use udev in a system where initscripts from oe-core is not available,
there will be errors.
This patch fixes this problem by removing the implicit dependency.
[YOCTO #4882]
[YOCTO #4103]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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In case of a read-only rootfs, we skip the process of generating
udev cache, as the data cannot be persisted between reboots.
However, it's possbile that the $DEVCACHE (default to /etc/dev.tar)
exists in a read-only rootfs, no matter how it's generated or installed.
In such situation, we try to use $DEVCACHE if possible.
Besides the basic changes in the logic of udev cache handling,
this patch also adds code to output more information if the udev
cache is not used and VERBOSE enabled.
This patch also changes the readfile function to readfiles function
so that it could handle more than one file at once.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Fix for bug: https://bugzilla.yoctoproject.org/show_bug.cgi?id=4632
Since udev 172, the 'mknod' logic was removed from udev. Yocto Dylan
is now using udev 182. This means /dev is now required to be a
devtmpfs filesystem (maintained by the kernel). If the root
filesystem is a ramdisk, the kernel's auto-mount of /dev doesn't
activate since there is no rootfs to actually mount... The bug causes
an unusable system as /dev doesn't contain even basic nodes required
to even get a login prompt.
The Yocto udev/init script mounts tmpfs if it does not detect tmpfs
or devtmpfs mounted at /dev. This appears to be outdated logic that
is no longer correct. I believe the Yocto udev init script should be
checking and mounting only 'devtmpfs' on dev.
Signed-off-by: Alex Olson <alex.olson+yocto@gmail.com>
[YOCTO #4632]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Previouly, the udev-cache has no real effect even if it's installed
into the system. The key problem here is that at first boot, the
/etc/dev.tar is not present, thus resulting /dev/shm/udev.cache not
created on first boot even if udev-cache is enabled.
This patch fixes this problem. The /dev/shm/udev.cache will be created
if necessary, that is, on first boot or when some part of the system is
changed. In the latter case, the udev cache may not be valid.
[YOCTO #4738]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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The /run directory is now a tmpfs with /var/run as a symbolic link
pointing to /run.
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Previously in udev init, /var/volatile/run had to be created after
mounting all tmpfs filesystems so that udevd can write to /var/run
(a symbolic link to /var/volatile/run). This is because udev is
started before populate-volatile.sh.
Now that /var/run is a symbolic link to /run (a tmpfs filesystem),
/var/volatile/run doesn't need to be created anymore.
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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If it's not first boot, /tmp has already been symlinked to /var/volatile/tmp.
But the udev service starts before populate-volatile.sh starts. This leads to
a dead link at /tmp. As a result, trying to create any file under /tmp will
fail.
If a USB is plugged in before the populate-volatile.sh script starts, the
/tmp/.automount-$name file will not be created correctly. As a result, when
the USB is unplugged, the /media/$name directory is not removed.
So we create /var/volatile/tmp directory in the udev script to avoid this dead
link problem.
[YOCTO #3404]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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This is needed because the udev_182 now requires devtmpfs and will not work correctly
with out, so ensure that the kernel contains devtmpfs by checking /proc/filesystems.
[YOCTO #4125]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Ensure we can update the script base don the location of the udevd installation
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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initscripts is generally installed on systemd-using images, but because it
specifies that /run is a symlink to /var/run managed by volatiles it totally
breaks systemd by copying/deleting /run from underneath systemd. Deleting
sockets mid-boot doesn't leave systemd in a happy place.
As this volatile reference of /run was introduced by udev 182, move it's
reference to the udev recipe. This way it will never be present on systemd
images, as systemd manages /run as a tmpfs itself.
Signed-off-by: Ross Burton <ross.burton@intel.com>
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udevadm is installed in /usr/bin not in /usr/sbin. Init script modified
accordingly.
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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[ CQID: WIND00388860 ]
Add the ability to use "stop", "start", "restart" and "status"
with the udev initscript.
Signed-off-by: Jesse Zhang <sen.zhang@windriver.com>
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Alejandro Hernandez
Saul Wold
Ross Burton
Ken Sharp
Javier Viguera
Chen Qi
Max Krummenacher
Richard Tollerton
Johan Hovold
Riku Voipio
Robert Yang
Denys Dmytriyenko
Alexandra Safta
Tom Rini
Chase Maupin
Nitin A Kamble
Alex Olson
Jonathan Liu
Andrei Gherzan
Jesse Zhang