Commit graph

432 commits

Author SHA1 Message Date
Michael Heimpold
d6ac8ca76c base-files: fix several bashisms
For equality test a simple = is sufficient, the == is
usually disregarded as bashism.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
2018-12-05 22:16:52 +01:00
Jo-Philipp Wich
9808bd2799 Revert "base-files: fwtool: Fix wrong checksum on combined-image with metadata"
This reverts commit 41770add03.

The fwtool_check_image() procedure is used by `sysupgrade --test` which must
not alter the image under test in any way.

Currently, when the LuCI ui or any other sysupgrade wrapper first invokes
sysupgrade --test to verify the compatibility of the image and then calculates
the sha256sum over it, the resulting checksum will differ from the original
image since the test invocation will implicitely strip the metadata trailer.

To properly fix the underlying issue, the combined image checksumming code
must be modified to skip the metadata trailer.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-12-02 16:05:44 +01:00
Tony Ambardar
8806da86f5 base-files: fix prerm return value, align with postinst code
The return value of a package prerm script is discarded and not returned
correctly by default_prerm(). This allows other operations like service
shutdown to "leak" their return value, prompting workarounds like commit
48cfc826 which do not address the root cause.

Preserve a package prerm script return value for use by default_prerm(),
sharing the corresponding code from default_postinst() for consistency.
Also use consistent code for handling of /etc/init.d/ scripts.

Run Tested on: LEDE 17.01.4 running ar71xx.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
2018-11-29 11:52:56 +01:00
Petr Štetiar
41770add03 base-files: fwtool: Fix wrong checksum on combined-image with metadata
If I create following image:

define Device/engenius-m36
  IMAGE/sysupgrade.bin := combined-image | append-metadata
endef

Sysupgrade then errors out:

  Invalid image. Contents do not match checksum (image:cd285595eaf297370404ae0e2815ec1a calculated:2cf9a2286fb6b01af3ea189128017d44)
  Image check 'platform_check_image' failed.

By removing the metadata from the image I get combined-image checksum
working again and sysupgrade works.

Signed-off-by: Petr Štetiar <ynezz@true.cz>
2018-11-26 12:05:45 +01:00
Christian Lamparter
641dc50164 base-files: make it possible to specify switch led mode
The swconfig switch led driver has the ability to switch
between a "link, rx and/or tx" mode. However, this feature
was not implemented in uci, the led init script and
config_generate.

This patch adds a seventh parameter to the
ucidef_set_led_switch() function. The accepted values for
this parameter are: link, rx and tx.
Any permutations of these three values are supported, as
long as they are properly encased with quotes.
If the parameter is not specified it will default to "all"
(link rx tx).

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-09-29 17:23:11 +02:00
Florian Eckert
61a5994900 base-files: add network_get_metric() to /lib/functions/network.sh
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
2018-09-25 10:16:03 +02:00
Tony Ambardar
4097ab6a97 base-files: fix postinstall uci-defaults removal
Commit 7f694582 introduced a bug where default_postinst() often fails to
remove a uci-defaults script after application, leaving it to run again
after a reboot.
(Note: commit 7f694582 also introduced FS#1021, now fixed by 73c745f6)

The subtle problem arises from the shell logical chain:
[ -f "$i" ] && . "$i" && rm -f "$i"

Most uci-defaults scripts contain a terminal 'exit 0' statement which,
when sourced, results in the logic chain exiting before executing 'rm -f'.
This was observed while testing upgrades of 'luci-app-sqm'.

The solution is to wrap the shell sourcing in a subshell relative to the
command 'rm -f':
( [ -f "$i" ] && . "$i" ) && rm -f "$i"

Revert to using 'grep' to prefilter the list of entries from the control
file, which yields the full path of uci-defaults scripts. This allows
keeping the existence check, directory change and script sourcing inside
the subshell, with the script removal correctly outside.

This approach avoids adding a second subshell only around the "." (source)
command. The change also preserves the fix FS#1021, since the full path is
used to source the script, which is POSIX-portable irrespective of PATH
variable or reference to the CWD.

Run Tested on: LEDE 17.01.4 running ar71xx, while tracing installation of
package luci-app-sqm with its associated /etc/uci-defaults/luci-sqm file.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
2018-09-24 18:58:00 +02:00
Mathias Kresin
56b8ac1e86 treewide: consolidate upgrade state set
Set the (sys)upgrade state when sourcing the stage2 script instead of
setting the state for each target individual.

This change fixes the, due to a missing state set, not working upgrade
led on ath79 and apm821xx.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-16 21:20:57 +02:00
Mathias Kresin
dfee452713 base-files: add function to get mac as text from flash
Add a function to get a mac stored as text from flash. The octets of
the mac address need to be separated by any separator supported by
macaddr_canonicalize().

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-11 21:36:27 +02:00
Mathias Kresin
ec28d2797c base-files: use consistent coding style
Add the opening bracket right after the function name, to do it the
same way for all functions in this file.

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-11 21:36:27 +02:00
Daniel Golle
8174853c78 base-files: introduce sysupgrade signature chain verification
Verify ucert signature chains in sysupgrade images in case ucert is
installed and $CHECK_IMAGE_SIGNARURE = 1.
Also make sure ucert host binary is present and generate a self-signed
ucert in case $TOPDIR/key-build.ucert is missing.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2018-08-08 02:22:54 +02:00
John Crispin
5e1b4c57de base-files: drop fwtool_pre_upgrade
this feature has never worked, the fw image name was not passed and the -t
parameter was missing in the tool invocation. drop the feature.

Signed-off-by: John Crispin <john@phrozen.org>
2018-07-30 17:42:39 +02:00
Jo-Philipp Wich
1bad852ff5 base-files: network.sh: gracefully handle missing network.interface ubus ns
When attempting to use any of the functions in network.sh while netifd is
not started yet, the ubus interface dump query will fail with "Not found",
yielding an empty response.

Subsequently, jsonfilter is invoked with an empty string instead of a valid
JSON document, causing it to emit a second "unexpected end of data" error.

This caused the dnsmasq init script to log the following errors during
early boot on some systems:

    procd: /etc/rc.d/S19dnsmasq: Command failed: Not found.
    procd: /etc/rc.d/S19dnsmasq: Failed to parse json data: unexpected end of data.

Fix the issue by allowing the ubus query to fail with "Not found" but still
logging other failures, and by passing an empty JSON object to jsonfilter
if the interface status cache is empty.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-07-17 08:10:20 +02:00
Rafał Miłecki
5b2e20807d base-files: exit if mtd write command fails during sysupgrade
It avoids confusing situations like:
> Could not get image magic
> Image check failed.
> Upgrade completed
> Rebooting system...

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-06-18 06:37:28 +02:00
Matthias Schiffer
3b6f865b01
base-files: sysupgrade: fix handing get_image unpack commands
On bcm53xx and brcm47xx, commands are passed to default_do_upgrade that
expect the image to be passed on stdin, rather than as an argument.

Fixes: 30f61a34b4 ("base-files: always use staged sysupgrade")
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2018-06-11 19:25:40 +02:00
Tony Ambardar
73d8a6ab76 base-files: fix UCI config parsing and callback handling
There are several long-standing issues present in the UCI shell API as
documented in https://wiki.openwrt.org/doc/devel/config-scripting. They
relate both to high-level, user-defined callback functions used to
process UCI config files, and also to low-level functions used within
scripts generally.

The related problems have been encountered now and in the past, e.g.
https://forum.openwrt.org/viewtopic.php?id=54295, and include:

a) UCI parsing option() function and user-defined option_cb() callbacks
being erroneously called during processing of "list" config file entries;

b) normal usage of the low-level config_set() unexpectedy calling any
defined option_cb() if present; and

c) handling of the list_cb() not respecting the NO_CALLBACK variable.

Root causes include a function stack "inversion", where the low-level
config_set() function incorrectly calls the high-level option() function,
intended only for processing the "option" keyword of UCI config files.

This change addresses the inversion and other issues, making the option
handling code more consistent and smaller, and simplifying developers'
usage of UCI callbacks.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
2018-06-06 15:00:08 +02:00
Jo-Philipp Wich
7e664b7c2d base-files: fix ucidef_set_interface() protocol selection
The previous refactoring of ucidef_set_interface() removed the protocol
selection heuristic which breaks the networking defaults for the majority
of boards.

Re-add the protocol selection and rename two bad "proto" references to
the expected "protocol" value.

Fixes: 85048a9c1f ("base-files: rework _ucidef_set_interface to be more generic")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-05-25 07:48:25 +02:00
Roman Yeryomin
85048a9c1f base-files: rework _ucidef_set_interface to be more generic
This is a rework of previously submitted patch reworking
ucidef_set_interface_raw [1]. Here, keep the idea but instead
make _ucidef_set_interface more generic and use it instead of
ucidef_set_interface_raw.
Also change the users like ucidef_set_interface_lan and others.

[1] https://patchwork.ozlabs.org/patch/844961/

Signed-off-by: Roman Yeryomin <roman@advem.lv>
2018-05-24 09:39:47 +02:00
Matthias Schiffer
14c78a7dfc
base-files: /lib/functions.sh: remove unused insert_modules
insert_modules has been unused since r5279.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2018-04-17 11:32:56 +02:00
Mathias Kresin
3a4bf25fd6 base-files: get_dt_led: don't warn about missing led
It's intentional that some boards within a target don't have all LEDs
which are tried to be setup in a common script. Don't show a warning in
such cases.

Fixes: 4f4fc993db ("base-files: add more name source to get_dt_led helper function")
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-04 09:12:39 +02:00
Mathias Kresin
4f4fc993db base-files: add more name source to get_dt_led helper function
Not all LED driver are using the label devicetree property for the led
name. Add support for the TI/National Semiconductor LP55xx Led Drivers,
which are using the chan-name property for the led name, as fallback.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-03-14 19:04:52 +01:00
Mathias Kresin
64fef8f901 base-files: add function to get binary mac from file
Add a fucntion to get the a binary mac address from file. Use the new
function for mtd_get_mac_binary() to limit duplicate code.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-03-14 19:04:52 +01:00
Daniel Golle
267873ac9b
base-files: don't evaluate block-device uevent
Current code and also before commit da52dd0c83 was vulnerable to shell
injection using volume lables in the GPT partition table of block
devices. Given that partition names can be freely defined in GPT tables
we really shouldn't evaluate a string which is potentially crafted with
evil intentions. Hence rather use `export -n` to absorb the uevent's
variables into the environment.

Fixes commit da52dd0c83 (base-files: quote values when evaluating uevent)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[mschiffer@universe-factory.net: suggested export -n usage]
2018-02-13 00:01:44 +01:00
Daniel Golle
da52dd0c83 base-files: quote values when evaluating uevent
When sourcing /sys/class/block/*/uevent values have to be quoted as
they may contain spaces (e.g. in PARTNAME).
Fix this by pre-processing with sed before sourcing.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2018-02-11 16:42:01 +01:00
Martin Schiller
1b1388f640 linux-atm: add br2684ctl option to specify the netdev name
Add the uci option nameprefix to specifc a target netdev name. Patch the
br2684ctl code to accept and set a netdev name via commandline parameters.

It allows to use the same netdev name for ATM and PTM lines on lantiq
xdsl hardware.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Mathis Kresin <dev@kresin.me>
2018-01-10 08:08:53 +01:00
Christian Lamparter
da6fdce365 base-files: unify get_dt_led helper function
Lantiq and IPQ806X (which includes IPQ40XX) both define the
same custom function {ipq806x|lantiq}_get_dt_led.

This patch moves the function into the base-file package at
lib/functions/leds.sh to make it more accessible for other
targets as well.

Cc: Mathias Kresin <dev@kresin.me>
Cc: John Crispin <john@phrozen.org>
Cc: Hannu Nyman <hannu.nyman@iki.fi>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2017-12-14 09:29:30 +01:00
Mathias Kresin
93bd46b719 procd: nand: remove nand_board_name platform override
It isn't uses anymore by any target.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2017-12-08 20:57:12 +01:00
Mathias Kresin
c90a8cb755 procd: nand: dont rely on boardname in nand_upgrade_tar
Kernel and rootfs in a subdirectory matching the userspace boardname,
was intended to use a single sysupgrade-tar archive for multiple boards
with different kernel/rootfs images. This feature was never used.

Use the first found directory in the tar archive instead of relying on
a directory named according to the userspace boardname.

It allows to change the boardname without adding another compatibility
layer - using the nand_board_name() function - for (sub)targets using
the metadata based image validation in favour to
nand_do_platform_check().

Signed-off-by: Mathias Kresin <dev@kresin.me>
2017-12-08 20:57:12 +01:00
Christian Lamparter
4e3f6dae04 base-files: upgrade: make get_partitions() endian agnostic
This patch fixes two issues with the current get_partitions()
function.

First: "Invalid partition table on $disk" will pop up on
legitimate images on big endian system.

This is because the little-endian representation of "55 AA" is
assumed in the context of little-endian architectures. On these
comparing it to the 16-bit word 0xAA55 does work as intented.
Whereas on big-endian systems, this would have to be 0x55AA.

This patch fixes the issue by replacing the integer conversion
and value match check with just a string comparision.

Second: The extraction of the type, start LBA and LBA num from
the partition table has the same endianness issue. This has been
fixed by using the new hex_le32_to_cpu() function. This function
will translate the stored little-endian data to the correct
byte-order if necessary.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2017-12-08 19:54:16 +01:00
Zoltan HERPAI
34bbbbf9c3 merge: base: update base-files and basic config
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
2017-12-08 19:41:18 +01:00
Mat Trudel
2dca7177e7 sysupgrade: don't kill our own parent
Add the parent of the sysupgrade script to the list of pids not getting
killed

Signed-off-by: Mat Trudel <mat@geeky.net>
Signed-off-by: John Crispin <john@phrozen.org>
2017-11-15 21:11:23 +01:00
Yousong Zhou
b2aa820b48 base-files: fix getting gid from group_add_next
Shell function return code only has range [0, 255].  Other values will
be truncated, e.g. return 65536 will have the same effect as return 0

While at it, drop other "return $rc" where rc will almost always take
value 0 and whose value current callers actually do not check

Fixes FS#988

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
2017-11-09 17:42:36 +08:00
Marko Ratkaj
73c745f64f functions.sh: fix default_postinst function
When we run "opkg install" on a package that installs an uci-defaults
script, functions.sh will fail to evaluate that script in its
default_postinst function.

This happens because there is no "./" present and it searches for the
file in paths specified by the PATH variable. This would work on bash,
but it will not work on ash and some other shells like sh, zsh. This
applys to the ". filename" directive used in this case.

This patch will make the path relative to the /etc/uci-defaults
directory.

Fixes: FS#1021

Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>
2017-11-08 23:18:22 +01:00
Jo-Philipp Wich
2b6facc8d4 include: kernel.mk: simplify module autoloading
Let the generic postinstall script invoke "kmodloader" when the just
installed package contains any /etc/module.d/ entries.

This allows us to skip the explicit "insert_module()" calls in the
package postinstall.

Due to the removed insert_module calls we do not need to assemble a
complete list of modules per package anymore, which allows for vast
simplification of the package generation code.

While we're at it, also support specifying default parameters for
modules using either the MODPARAM or MODPARAM.modulename variables
in KernelPackage.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2017-11-07 12:02:06 +01:00
Rafał Miłecki
1e13c6f77f base-files: drop unused preinit_echo function
It isn't used for years since the old 99_10_run_init has been dropped.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2017-08-09 23:23:06 +02:00
Rafał Miłecki
f41dd32722 base-files: don't setup network in preinit if failsafe is disabled
With failsafe disabled there is no point in early network setup. We
don't send announcement over UDP and there is no way to ssh to the
device.

A side effect of this is avoiding a possibly incorrect network config
(only with failsafe disabled). This problem is related to possible
changes made by user in /etc/config/network.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2017-08-09 23:18:59 +02:00
Matthias Schiffer
1ab227d688
base-files: upgrade: don't loop forever trying to kill processes
When processes don't die on SIGKILL (usually because of kernel bugs), it's
better to give up instead of looping forever.

upgraded will trigger a reboot in this case (and if this fails, a hardware
watchdog will eventually time out and reset the system, if present).

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-07-20 21:41:33 +02:00
Mathias Kresin
ac3e05c5d7 treewide: populate boardname and model earlier
For targets using the generic board detection and board specific
settings in diag.sh, the board name is still unset at the time the
set_state() provided by diag.sh is called by 10_indicate_preinit.

Change the execution order to ensure the boardname is populated before
required the first time. Do the target specific board detection as
early as possible, directly followed by the generic one to allow a
seamless switch to the generic function for populating /tmp/sysinfo/.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2017-07-15 23:13:34 +02:00
Matthias Schiffer
438dcbfe74
base-files: automatically handle paths and symlinks for RAMFS_COPY_BIN
Depending on busybox applet selection, paths of basic utiilties may differ,
and may not work as symlinks to busybox. Simply using whatever binary is
found in PATH and detecting symlinks automatically is more robust and
easier to maintain.

The list of binaries is also slightly cleaned up and duplicates are
removed.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-07-11 17:26:32 +02:00
Matthias Schiffer
73f675415c
bcm53xx: upgrade: fix RAMFS_COPY_*
Fixes: 30f61a34b4 "base-files: always use staged sysupgrade"
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-07-11 17:19:23 +02:00
Matthias Schiffer
7a29e44f90
base-files: upgrade: correctly handle nand_do_upgrade argument passed from preupgrade
Fixes: 30f61a34b4 "base-files: always use staged sysupgrade"
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-07-11 17:19:23 +02:00
Yousong Zhou
f334a0cdb8 base-files: allocate uid/gid starting from 65536
There already exist static assignment of uid/gid 65533 in packages feed
and we have nobody/nogroup taking 65534 as their ids.  Let's change the
pid of dynamic assignment to start from 65536 so that the two assignment
scheme will not collide with each other

While at it, fix the scan command checking existence of uid/gid

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
2017-06-18 10:39:35 +08:00
Mathias Kresin
4cdbf4014b base-files: make ucidef_set_led_rssi offset and factor optional
The offset and factor are only related for LEDs which can have
different brightness values. But binary LEDs are more common and don't
require any further configuation than setting the factor to 1.

Use offset = 0 and factor = 1 in case nothing else is specified.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2017-06-17 15:38:19 +02:00
Jonas Gorski
fd952c7a83 base-files: board.json's switch reset means existence, not argument
Don't pass the value unconditionally to swconfig as a parameter but
instead only call reset if it is 1.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2017-06-11 12:50:14 +02:00
Jo-Philipp Wich
6426e4edef base-files: network.sh: fix a number of IPv6 logic flaws
* Change network_get_subnet6() to sensibly guess a suitable prefix

  Attempt to return the first non-linklocal, non-ula range, then attempt
  to return the first non-linklocal range and finally fall back to the
  previous behaviour of simply returning the first found item.

* Fix network_get_ipaddrs_all()

  Instead of replicating the flawed logic appending a fixed ":1" suffix
  to IPv6 addresses, rely on network_get_ipaddrs() and network_get_ipaddrs6()
  to build a single list of all interface addresses.

* Fix network_get_subnets6()

  Instead of replicating the flawed logic appending a fixed ":1" suffix
  to IPv6 addresses, rely on the ipv6-prefix-assignment.local-address
  field to figure out the proper network address.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2017-06-08 20:12:52 +02:00
Jo-Philipp Wich
7f91cabd0d base-files: network.sh: properly report local IPv6 addresses
Rework the network_get_ipaddr6() and network_get_ipaddrs6() functions to
fetch the effective local IPv6 address of delegated prefix from the
"local-address" field instead of naively hardcoding ":1" as static suffix.

Fixes FS#829.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2017-06-08 12:06:01 +02:00
Matthias Schiffer
5654a03768
mvebu: fix sysupgrade
mvebu was modifying RAMFS_COPY_BIN and RAMFS_COPY_DATA from a
sysupgrade_pre_upgrade hook. As the ramfs is created from stage2, this
did not have an effect anymore after the staged sysupgrade changes.

As it doesn't really hurt to copy fw_printenv and fw_setenv
unconditionally, simply add them in /lib/upgrade/platform.sh, so stage2
will see them.

Config copying is moved to a function called by platform_copy_config, where
it belongs.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Fixes: FS#821
Fixes: 30f61a34b4 "base-files: always use staged sysupgrade"
2017-06-01 20:41:19 +02:00
Christian Lamparter
7783f31359 base-files: nand: use CI_KERNPART whenever the kernel volume is needed
The sender domain has a DMARC Reject/Quarantine policy which disallows
sending mailing list messages using the original "From" header.

To mitigate this problem, the original message has been wrapped
automatically by the mailing list software.
This patch is in continuation of: commit 93aa860405
"procd: nand: make it possible to configure kernel and ubi partition"

The $CI_KERNPART variable should be used in place
of the fixed "kernel" partition name. This allows
targets to specifiy alternate names for the kernel
partition.

Cc: Chris Blake <chrisrblake93@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
2017-05-31 09:55:01 +02:00
Matthias Schiffer
a5428244d9
base-files: add support for staged sysupgrades from failsafe mode
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-05-29 23:50:33 +02:00
Matthias Schiffer
b2adb9a7b5
base-files: sysupgrade cleanup
Some functions only used by stage2 are moved there from common.sh.

One piece that could still use more cleanup is platform_pre_upgrade: many
targets reference files from there are aren't available in the ramfs, so
we need to evaluate it before the switch; conversely, flash writes happen
in that function on some targets. Targets that do the latter should be
fixed eventually to use platform_do_upgrade for that purpose.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2017-05-29 23:50:33 +02:00