Config option to limit maximum compression streams per zram dev for
multicore CPU's. This could be defined via 'zram_comp_streams' option in
the 'system' section of '/etc/config/system' file or via cli (for e.x.
with 'uci set system.@System[0].zram_comp_streams=2 && uci commit
system'). Default is number of logical CPU cores.
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
Use only one zram swap device of the specified $size instead of
[N x $size] devices for multicore CPUs Now zram module uses multiple
compression streams for each dev by default, so we do not need to create
several zram devs to utilize multicore CPUs.
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
* "zram stop" could reset up to $(num_of_cores) zram devices even if
some of those were not mounted as swap dev's. This fix tries to
enumerate mounted swap zram dev's before making a reset
* remove hot-added zram devs on stop (except zram0)
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
Compression algorithms for zram are provided by kernel crypto API, could
be any of [lzo|zl4|deflate|<some_more>] depending on kernel modules.
Compress algo for zram-swap could be defined via 'zram_comp_algo' option
in 'system' section of '/etc/config/system' file, or via cli (for e.x.
with 'uci set system.@System[0].zram_comp_algo=lz4 && uci commit
system'). check available algo's via 'cat /sys/block/zram0
/comp_algorithm'
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
usign occasionally writes 16 characters then exits without writing a LF,
leaving ucert hanging waiting for more input. Accept 16 characters
or more rather than 17 to work around the short read.
Signed-off-by: Mike McCormack <mike@atratus.org>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Update to latest HEAD in order to fix a stack memory corruption issue:
1056e73 Change the sigb buffer to be the same size as the fread
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
ad816fc set rpath to make bundle-libraries.sh happy
63ad591 blob_buf needs to be zero'd
Now that libubox, libjson-c and libblobms_json are installed into
STAGING_DIR_HOST we can properly bundle ucert in the ImageBuilder.
Follow-up commits will make use of it to include a signature-chain in
sysupgrade images using fwtool.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
e29966f Allow disabling seccomp or changing the whitelist
5f57223 trace: Use properly sized type for PTRACE_GETEVENTMSG
747efb6 procd: fix ustream deadlock when there are 0 bytes or no newlines
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
First of all lengths should be compared after checking all blocks for
being good/bad. It's because requested length may differ from a final
one if there were some bad blocks.
Secondly it makes sense to also compare crc32 since we already have a
new one calculated.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reading MTD data with (p)read doesn't return any error when accessing
bad block. As the result, with current code, CRC32 covers "data" stored
in bad blocks.
That behavior doesn't match CFE's one (bootloader simply skips bad
blocks) and may result in:
1) Invalid CRC32
2) CFE refusing to boot firmware with a following error:
Boot program checksum is invalid
Fix that problem by checking every block before reading its content.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
OpenSSL defaults X509_CERT_FILE to /etc/ssl/cert.pem. This change is
needed for wget-ssl and possibly others to work seamlessly with fresh
ca-bundle installation
Fixesopenwrt/packages#6152
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
ucert is a wrapper around usign to allow delegation and revocation of
public keys for future use in sysupgrade.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This work was sponsored by WIO (wiowireless.com)
If log_file is specified, make sure its directory exists.
Signed-off-by: Karl Palsson <karlp@etactica.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
The mtd tool is built with different configurations depending on the
target. For example, brcm47xx adds the fixtrx subcommand, without which
an image fails when booting the second time.
Mark the mtd package as nonshared to really fix FS#484.
Signed-off-by: Mirko Parthey <mirko.parthey@web.de>
dd02dad fstools: allow the mounting with full access time accounting
242248c fstools: allow to compress the filesystem
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Mounting using the zlib compression and mounting with
full access accounting are now available in the
menuconfig.
Signed-off-by: Pierre Lebleu <pme.lebleu@gmail.com>
8206219 uci: fix memory leak in rpc_uci_replace_savedir()
10f7878 exec: close stdout and stderr streams on child signal
92d0d75 uci: use correct sort index when reordering sections
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
When a partition offset is given, it is used in an lseek call, which
affects write, but not erase. Add it to the offset for erase calls as
well
Signed-off-by: Felix Fietkau <nbd@nbd.name>
e243683 libfstools: move mount points when switching to JFFS2
3782b59 libfstools: add "const" to char pointer arguments in mount_move()
79721f0 libfstools: fix foreachdir() to pass dir with a trailing slash
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Changes since last version
dfb68f8 service: initialize supplementary group ids
3db4e6d service: add func for string config change check
c3faabe procd: get rid of putenv usage.
The supplementary group id change fixes FS#988
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
5d2bf09 uci: fix a potential use-after-free in uci_set()
3b3d63e list: only record ordering deltas if element position changed
4c4d343 cmake: Fix cli shared linking against ubox
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
128bc35 logread: fix reconnect logd logic
66347ec logread: move the code setting up the request blob out of the main loop
975a258 logread: move output connection setup code out of main loop
b81bea7 logread: cleanup pid file handling
d73e7d2 ubox: Replace strerror(errno) with %m format.
Signed-off-by: John Crispin <john@phrozen.org>
D-Link DAP-1522 is a wireless bridge/access point with 4 LAN
ports and a dual-band wireless chipset.
Specifications:
- Ralink RT2880
- 32 MB of RAM
- 4 MB of Flash
- 4x 10/100/1000 Mbps Ethernet (RTL8366SR)
- 802.11abgn (RT2850)
Flash Instructions:
1. Download lede-ramips-rt288x-dap-1522-a1-squashfs-factory.bin
2. Open the web interface and upload the image
Signed-off-by: George Hopkins <george-hopkins@null.net>
Add tool to "compile" Intel microcode files. The tool will be
compiled for host (to split the microcode.dat) and for target
(to forcibly reload the microcode if required).
Instead of using the large microcode.bin/microcode-64.bin, the
splitted ucode files (separate for CPU families) will be
installed.
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
This fixes the following errors when doing "make package/install"
/home/yousong/git-repo/lede-project/lede/build_dir/target-mips_24kc_musl/root-malta/lib/functions/procd.sh: line 47: /home/yousong/git-repo/l
ede-project/lede/build_dir/target-mips_24kc_musl/root-malta/var/lock/procd_urandom_seed.lock: No such file or directory
flock: 1000: Bad file descriptor
Fixes FS#1260
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
5bae22e ubus/lua: pass notification name to callback
212ceb1 valgrind complained about these
d57907c fix invalid close() call
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
18090d9 overlay: fix compilation with glibc
2a9a6ea libfstools: optimize building directory string for glob
de6b026 libfstools: support file paths longer than 255 chars
Signed-off-by: John Crispin <john@phrozen.org>
2a9a6ea libfstools: optimize building directory string for glob
de6b026 libfstools: support file paths longer than 255 chars
Signed-off-by: John Crispin <john@phrozen.org>
When using the uci.sh wrapper, allow parameters to match those supported
by the uci binary i.e. "uci rename <config>.<section>[.<option>]=<name>".
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
Usage documentation for 'procd_send_signal' states "The signal is SIGHUP
by default, and must be specified by NAME." Make actual behaviour match
the stated documented behaviour.
https://wiki.openwrt.org/inbox/procd-init-scripts
Suggested-by: Jo-Philip Wich <jow@mein.io>
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
a5954cf procd: Add %m to several functions that return errno.
810d7a5 procd: Remove redundant errno variable in several printf functions.
fa5ce1c procd: Replace strerror(errno) with %m.
Signed-off-by: John Crispin <john@phrozen.org>
11efbf3 overlay: fix race condition when switching to jffs2
bdeb95a libblkid-tiny: add support for NTFS superblock
ef2cc03 fstools: Replace strerror(errno) with %m format.
98fd5b4 libblkid-tiny: add support for UBI superblock
Signed-off-by: John Crispin <john@phrozen.org>
Use flock to protect init script from concurrent execution
(of the same script).
Important for services which generate native config files.
Signed-off-by: Roman Yeryomin <roman@advem.lv>
Signed-off-by: Andrejs Hanins <ahanins@gmail.com>
5beb95d lua: additionally return name when looking up sections
ff33bb2 lua: support extended section notation
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Including version.mk sets PKG_CONFIG_DEPENDS to config entries used for
VERSION_SED command. We should keep these configs to make sure package
gets refreshed when needed.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
All the relevant options used for distfeeds.conf are part of base-files,
so it makes more sense to move the file there as well.
This has the added benefit that the we can share the opkg package again,
reducing the amount of target specific packages.
Acked-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
9c13096 ubus: Remove unnecessary memset calls.
6d1ea6c libubus: Fix deletion from context's object AVL tree when removing object
e02813b ubusd: don't free messages in ubus_send_msg() anymore
be146ad ubusd: rename goto label from `error` to `out`
27d712d ubusd_monitor: alloc & free the buffer outside of the loop
5f87f54 ubusd: move global retmsg per client
Signed-off-by: Felix Fietkau <nbd@nbd.name>
7a49632 logd: use uloop instead of ustream_fd for syslog
69d6542 logd: only create pipe in stream mode
df30c8c logread: terminate after EOF
bdcacad logd: implement oneshot mode for stream log read
4a10d4e logread: use oneshot mode without -f, wait for logd to close
ea3d7fa logd: enforce line length limit for ubus based log messages as well
960a29d logread: remove leftover debug code
a081904 logread: fix line buffer size
2c0d9cf logd: move stripping of newlines to log_add()
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Without this change, when a user disables seccomp support in .config,
procd does not get recompiled unless the package is cleaned manually.
It is because when -D option is missing from cmake command line, cmake
uses cached value from the previous run where seccomp was enabled.
Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
ee582d1 instance: properly compare and reload respawn config
260a4cd utrace: Start the tracee only after uloop initialization
520ad3c utrace: Switch all logging to ulog
1c48104 utrace: Support non-contiguous syscall numbers
582cf97 utrace: Forward SIGTERM to the traced process
32534f7 utrace: Report ptrace errors
ccde3fb seccomp: Improve error message
7f9b174 preload-seccomp: Use proper log level for error messages
e3c4302 Start seccomp-enabled services via seccomp-trace
5e4ad02 seccomp: Log seccomp violations with utrace
2661b2f utrace: Use PTHREAD_SEIZE instead of PTHREAD_TRACEME
b5d53c6 utrace: Deliver signals to traced processes
b416ed9 utrace: Support tracing multi-threaded processes and vfork
8b7d47a utrace: Trace processes across forks
c6b6ec6 utrace: Sort syscalls by number of invocations
592c532 Update trace attribute
c8faedc Do not disable seccomp when configuration is not found
017f3a1 utrace: Fix off-by-one errors
5acaf15 utrace: Fix environment initialization
Signed-off-by: John Crispin <john@phrozen.org>
b1bc8d5 kmodloader: log error message in case of out of memory
f346111 kmodloader: lift restriction on module alias info
f1ef2c3 kmodloader: fix possible segfaults
9cb63df kmodloader: fix endianess check
2cff779 kmodloader: Check module endian before loading
d54f38a kmodloader/get_module_info: initialized aliases to make it more clean
a0b6fef kmodloader: insmod: fix a memoryleak in error case
278c4c4 kmodloader/get_module_name: null-terminate the string
16f7e16 syslog: remove unnecessary sizeof struct between messages
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Properly quote the arguments so that you can register a service with TXT
entries that contains spaces.
Example:
procd_add_mdns myservice tcp 9999 "key=descriptive text field 1" \
"another=something equally verbose"
Output before:
$ avahi-browse -r -v _myservice._tcp
_myservice._tcp local
hostname = [blah.local]
address = [192.168.255.74]
port = [9999]
txt = ["verbose" "equally" "another=something" "1" "field" "text" "key=descriptive"]
Output now:
$ avahi-browse -r -v _myservice._tcp
_myservice._tcp local
hostname = [blah.local]
address = [192.168.255.74]
port = [9999]
txt = ["another=something equally verbose" "key=descriptive text field 1"]
Signed-off-by: Karl Palsson <karlp@etactica.com>
Commits since last 2017-07-11:
4bd8601 pkg_parse: fix segfault when parsing descriptions with leading newlines
Fixes FS#933.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Expose "term_timeout" parameter in procd.sh to allow init scripts to
request a longer termination timeout.
This is required to fix FS#859 in a later commit.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Adjust default permissions and ownership of /dev/tty* nodes from
0600/root:root to 0660/root:tty in order to support granting
unprivileged user access when needed.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
453116e system: introduce new attribute board_name
e5b963a preinit: define _GNU_SOURCE
e5ff8ca upgraded: cmake: Find and include uloop.h
f367ec6 hotplug: fix a memory leak in handle_button_complete()
796ba3b service/service_stopped(): fix a use-after-free
79bbe6d system: return legacy board name
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
We can reuse the kill_remaining and run_ramfs facilities of the stage2 run
by upgraded.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
We always want to support staged upgrades now, so it's better to include
upgraded into the main package. /lib/upgrade/nand.sh is moved to
base-files.
The procd-nand-firstboot package is removed for now, it may return later
as a separate package.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
992b796 rcS: add missing fcntl.h include
63789e5 init: add support for sysupgrades triggered from preinit
5b1fb35 Remove code that has become unnecessary after sysupgrade changes
5918b6d upgraded: add support for passing a "command" argument to stage2
056d8dd upgraded: link dynamically, chroot during exec
7c6cf55 system: always support staged sysupgrade
d42b21e procd/rcS: Use /dev/null as stdin
e0098d4 service/instance: add an auto start option
1247db1 procd: Log initscript output prefixed with script name
8d720b2 procd: Don't use syslog before its initialization
2555474 procd: Add missing \n in debug message
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Use install_bin to copy upgraded with all dependencies. The old name
/tmp/upgraded is temporarily retained as a symlink to avoid breaking
things.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
88d48d5 libfstools: silence mkfs.{ext4,f2fs}
a19f2b3 build: disable the format-truncation warning error to fix gcc 7 build errors
633a8d0 libfstools: fix multiple volume_identify usages with the same volume
c43ae11 fstools: use -Wno-format-truncation instead of -Wno-error=format-truncation
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Changes since last version
546bc72 pkg: alternatives support
7a96972 libbb: xreadlink: fix memory leak on failure case
3f13edd pkg_run_script: use pkg->dest in half installed case
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Update to latest Git in order to import the following fixes:
1d0263b check_data_file_clashes_change: remove duplicated offline root in paths
a00a6a9 buildReplaces: do not add duplicated replacees
9fbedd8 opkg: compare-versions doesn't need any state
45b54f6 opkg_cmd: fix segmentation fault in opkg_compare_versions_cmd()
93de62b opkg_cmd: fix return of opkg compare-versions
51275a8 pkg_src_list_push: remove unused function
947d3d4 pkg_src_list_pop: remove unused function
980cfb2 str_list_push: remove unused function
52c31c1 str_list_prev: remove unused function
7d24212 str_list_last: remove unused function
48142a3 conffile_list_pop: remove unused function
46c5de5 pkg_dest_list_push: remove unused functions
368bb62 nv_pair_list_prev: remove unused function
2985c00 nv_pair_list_last: remove unused function
f5082ac conffile_list_pop: remove unused function
89bf8b9 conffile_list_push: remove unused function
23d31fb active_list_sort: remove unused function
7fe45f2 active_list_add_depend: remove unused function
86b584d pkg_dependence_satisfied: remove unused function
816d330 Fix typo in pkg_hash_fetch_best_installation_candidate.
07f3b02 set_flags_from_control: remove function
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
20c16fc cmake: Make blockd link against libjson-c
92b4c2c libfstools: add basic documentation of mount functions
Signed-off-by: John Crispin <john@phrozen.org>
With this patch, the nand.sh script no longer overwrites
CI_KERNELPART and CI_UBIPART if they have been set before.
This allows platforms specify alternative values for these
variables.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
continue work started here: http://patchwork.ozlabs.org/patch/520859
Extend /etc/config/system with parameters to set the default respawn treshold and respawn timeout
for procd launched services that have respawn enabled.
This results in cleaner init scripts, while making sure services have respawn parameters set.
Signed-off-by: Claudiu Brasovean <cbrasho@gmail.com>
8f218f5 procd: service gets deleted when its last instance is freed
35209a0 procd: update modprobe path
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Update to latest Git in order to import the following fixes:
19070b6 unarchive: fix possible segmentation fault in deb_extract()
758527e pkg: forward "provided_by_hand" flag in pkg_merge()
1fdc2ca pkg: mark bit fields in pkg_t unsigned
15fc1ee opkg_cmd: avoid null pointer dereference in opkg_what_depends_conflicts_cmd()
439c89e opkg_cmd: fix endless loop in whatprovides/whatreplaces
0fb3e9f pkg_depends: propagate virtual provided detail flag to providers
793155f pkg_depends: fix unsatisfied dependency installation order
b1dc770 libopkg: fix some overly aggressive line wrapping in pkg_depends.c
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
c09e4f0 ubusd: fix incomplete copy of shared buf during queue-ing
453b87f cli: add support for subscribing to objects
6eb3c96 cli: do not use default timeout for listen
dfe3383 libubus: reset ctx->sock.error when doing ubus reconnect
34c6e81 cli: fix listen_timeout compile issue
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Update to latest Git head to get rid of a stray printf() causing unwanted
output in the "opkg list-upgradable" command.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
A missing list pointer initialization caused opkg to ignore conffile entries
from status files, breaking the conffile tracking on the target.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
c553354 cmake: fix typo
8973576 kmodloader: fix not being able to find some modules
fce9382 cmake: Check for getrandom system call
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The switch to cmake caused the -DHAVE_USIGN flag to get lost, disabling
compilation of the correspondinf support code.
Update to latest Git head which enables usign support by default.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Switch to our own fork of opkg to significantly reduce the required amount
of memory when updating lists or installing packages.
Preliminary tests showed a usage drop of about 90% during these operations,
from ~3.7MB with unmodified opkg to ~360KB with our custom fork.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
5f91241 procd: add cancel_timeout on rc scripts when a runtime_timeout is specified
961dc69 procd: stop service using SIGKILL if SIGTERM failed to do so
Signed-off-by: John Crispin <john@phrozen.org>
Default trigger action timeout was added to procd.sh in commit f88e3a4c0
(procd: add default timeout for reload trigger actions)
However, the timeout value was not placed under the correct JSON-script
array nesting level and thus did not apply.
To fix this and make the timeout actually apply to the reload triggers,
we place it in the correct scope, that is the per-trigger array.
Fixes: f88e3a4c0a
Signed-off-by: Denis Osvald <denis.osvald@sartura.hr>
Adds the following fixes:
91acde6 libubus: do not modify uloop_cancelled
763b9b2 libubus: reset ctx->sock.eof to fix reconnect issues
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Update ubox to latest Git HEAD in order to import the following fixes:
ac2d43e kmodloader: support '-q' quiet option
f8d3d16 ubox: Add an option for more accurate timestamps in log
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Fixes build issues with some toolchains that don't add lcrypt in the default
search paths:
CMakeFiles/rpcd.dir/session.c.o: In function `rpc_login_test_password':
build_dir/target-mipsel-linux-gnu/rpcd-2016-12-03-0577cfc1/session.c:823: undefined reference to `crypt'
collect2: error: ld returned 1 exit status
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Update ubox to latest Git head in order to import the following fixes:
14839f0 kmodloader: make insert_module() idempotent
6e3c6dc kmodloader: add module alias awareness
9371411 kmodloader: fix out-of-bound access when parsing .modinfo
a62c946 kmodloader: modprobe: skip possible command line arguments
46a4b5f kmodloader: log to kmsg when loading directories of modules
eacc426 kmodloader: remove redundant glob wildcard char
8488bb5 ubox: Initialize conditionally uninitialized variable
db070f1 ubox: Fix some memory leaks
acc48b5 kmodloader: Fix typo in error message
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This is how other Linux distributions are doing and kernel
modprobe_path[] of request_module() also has a default value of
/sbin/modprobe
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
A given signal-name is now converted to the corresonding number. In general
it's good style to use names (readability) and it's more portable: signal
numbers can be architecture-dependent, so we are more safe giving names.
A real world example is signal 10, which is BUS on ramips and USR1 on PPC.
All users of 'procd_send_signal' must change their code to reflect this.
Signed-off-by: Bastian Bittorf <bb@npl.de>
Clarify opkg's messages related to downloads:
* more visible error message for package list download failure
* separate error message for signature file download error
* if wget returns 4, signal the network error more clearly
* remove '.' from end of filenames and URLs
* try signature check only if the package list was downloaded ok.
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
- Adds support for passing file descriptors in ubus invoke requests
- Fixes clearing pending timers on ubus_shutdown()
- Fixes checking the amount of written data in ubusd
- Fixes an ubusd crash when trying to subscribe to system objects
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Currently system log is always included as a part of ubox. Add logd as a
seperate package and add it to default packages list.
Signed-off-by: Andrej Vlasic <andrej.vlasic@sartura.hr>
Signed-off-by: Luka Perkov <luka.perkov@sartura.hr>
opkg doesn't have BUILD_VARIANTs anymore, so the previously defined
PKG_BUILD_DIR would lead to a weird 'opkg-' path component.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
