OpenWrt uses a lot of (b)ash scripts for initial setup. This isn't the
best solution as they almost never consider syncing files / data. Still
this is what we have and we need to try living with it.
Without proper syncing OpenWrt can easily get into an inconsistent state
on power cut. It's because:
1. Actual (flash) inode and data writes are not synchronized
2. Data writeback can take up to 30 seconds (dirty_expire_centisecs)
3. ubifs adds extra 5 seconds (dirty_writeback_centisecs) "delay"
Some possible cases (examples) for new files:
1. Power cut during 5 seconds after write() can result in all data loss
2. Power cut happening between 5 and 35 seconds after write() can result
in empty file (inode flushed after 5 seconds, data flush queued)
Above affects e.g. uci-defaults. After executing some migration script
it may get deleted (whited out) without generated data getting actually
written. Power cut will result in missing data and deleted file.
There are three ways of dealing with that:
1. Rewriting all user-space init to proper C with syncs
2. Trying bash hacks (like creating tmp files & moving them)
3. Adding sync and hoping for no power cut during critical section
This change introduces the last solution that is the simplest. It
reduces time during which things may go wrong from ~35 seconds to
probably less than a second. Of course it applies only to IO operations
performed before /etc/init.d/boot . It's probably the stage when the
most new files get created.
All later changes are usually done using smarter C apps (e.g. busybox or
uci) that creates tmp files and uses rename() that is expected to be
atomic.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Per FHS 3.0, /var/lock is the location for lock files [1].
However its current permissions (755) are too restrictive
for use by unprivileged processes.
Debian and Ubuntu set them to 1777, and now so do we.
[1] <https://refspecs.linuxfoundation.org/FHS_3.0/fhs-3.0.html#varlockLockFiles>
Signed-off-by: Deomid Ryabkov <rojer@rojer.me>
[fixed typo in commit message, had to remove "rojer" due to git hooks]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Pstore (persistent store) can be used to stash debug information (kernel
console, panics, ftrace) across reboots or crashes. If the filesystem is
present, mount it.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
vconfig has been disabled by default since 2015 [1] and there are
no remaining uses in entire OpenWrt trunk. However, we still set up
a specific name_type for it during boot.
While this setup is properly implemented to be only triggered when
vconfig is present, it still seems anachronistic and unnecessary
to set up a standard for a tool that is not used anymore.
Therefore, this removes the set_name_type initialization and leaves
it for those people actually using the tool to configure it as needed.
[1] 899a23227e ("busybox: improve applets & deprecate ifconfig, route")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Explicitly mount the BPF filesystem if available. This is used for pinning
eBPF programs and maps, making them accessible to other eBPF programs or
from userspace with the help of libbpf or bpftool.
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
[daniel@makrotopia.org: bumped PKG_RELEASE]
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This patch is in a series to allow additional STOP indexes after umount,
so that other block devices may stop cleanly.
boot is now STOP=90
umount is now STOP=90
After this patch series, the resulting STOP indexes in the 80s & 90s
will be:
STOP=85 odhcpd.init
STOP=89 conntrackd.init
STOP=89 log.init
STOP=89 rssileds.init
STOP=90 boot
STOP=90 kdump.init
STOP=90 network
STOP=90 sysfixtime
STOP=90 umount
STOP=98 mdadm.init (note: will be addressed in a separate patch)
Signed-off-by: Joseph Tingiris <joseph.tingiris@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[PKG_RELEASE is now 200]
Currently, the wifi detection script is executed as part of
the (early) boot process. Pluggable wifi USB devices, which
are inserted at a later time are not automatically
detected and therefore they don't show up in LuCI.
A user has to deal with wifi detection manually, or restart
the router.
However, the current "sleep 1" window - which the boot
process waits for wifi devices to "settle down" - is too
short to detect wifi devices for some routers anyway.
For example, this can happen with USB WLAN devices on the
WNDR4700. This is because the usb controller needs to load
its firmware from UBI and initialize, before it can operate.
The issue can be seen on a BT HomeHub 5A as well as soon as
the caldata are on an ubi volume. This is because the ath9k
card has to be initialized by owl-loader first. Which has to
wait for the firmware extraction script to retrieve the pci
initialization values inside the caldata.
This patch moves the wifi configuration to hotplug scripts.
For mac80211, the wifi configuration will now automatically
run any time a "ieee80211" device is added. Likewise
broadcom-wl's script checks for new "net" devices which
have the "wl$NUMBER" moniker.
Issues with spawning multiple interface configuration - in
case the detection script is run concurrently - have been
resolved by using a named section for the initial
configuration. Concurrent configuration scripts will now
simply overwrite the same existing configuration.
A workaround which preserves the "sleep 1" window for just
the first boot has been added. This allows the existing
brcm47xx boot and mvebu uci-default scripts to correctly
setup the initial mac addresses and regulatory domain.
And finally, the patch renames the "wifi detect" into
"wifi config". As the script no longer produces any output
that has to be redirected or appended to the configuration
file.
Thanks to Martin Blumenstingl for helping with the implementation
and testing of the patch.
Acked-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Previously, wifi detect simply dumped its generated wireless
configuration to STDOUT. A second step was needed to append
the configuration to /etc/config/wireless (or create it, if
it didn't exist).
With this patch, The wifi detection script will now use uci
to update the wireless configuration directly.
This patch also makes the initially created wifi-iface a
named section ('default_radio$X' for mac80211 and
'default_wl$X' for broadcom). With this change, uci will
not print the cfgHASH to STDOUT (which would now corrupt
the wireless configuration). It will also prevent adding
duplicated wifi interface configurations, if the wifi
configuration is run concurrently.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Instead of board_detect generating the config as a side effect, let
config_generate call board_detect as needed.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
/etc/init.d/boot tried to create /dev/root based on the kernel's
cmdline which won't work on any recent targets. Remove that code now
that fstools can detect the mounted rootfs based on
/proc/self/mountinfo and /dev/root was long gone anyway.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
FHS mandates presence of /var/tmp on compliant systems.
The lack of /var/tmp was discovered when using MIT Kerberos libraries
which default to that location for storing credentials cache.
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
SVN-Revision: 47219
We need a+x rights on the path to the root of the jails
so we can use users other than root (like nobody)
This partly fixes jailed dnsmasq
Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>
SVN-Revision: 46466
this allows targets to use the new uci-default helper which will generate
a file called /etc/board.json. a tool called /bin/config_generate can then
be used to generate the default uci settings.
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 42185
Only reload hostname and timezone config on /etc/init.d/boot restart.
Module loading and basic boot setup is only done during boot.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
SVN-Revision: 38670
The behaviour of calling 'mount' differed depending on whether it called
the busybox-mount, the mount of util-linux, the mount defined in
/lib/functions.sh and /lib/functions/boot.sh
/etc/preinit even included /lib/functions.sh and /lib/functions/boot.sh,
both re-defining 'mount'.
SVN-Revision: 34792
On slower devices wifi drivers might take too long for detecting
devices, resulting in the wifi detect call not seeing them.
This was observed on a bcm6348 with bcm4318 wifi. Adding a one second
pause was enough for b43 to expose the device.
SVN-Revision: 31639
The script tests for the existance of /dev/root with test -e which fails if
/dev/root is a dangling symlink making the call to ln fail.
Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>
SVN-Revision: 26483
