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Previously, when dropbear was started via its init script, relocation
of DROPBEAR_RSAKEY_DIR to support read-only rootfs was handled at
run time from within the init script.
Update the init script to take advantage of the read-only rootfs
config setup by read_only_rootfs_hook() and therefore be consistent
with startup under systemd (where relocation of DROPBEAR_RSAKEY_DIR
is handled by the read_only_rootfs_hook() at build time).
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Bring the dropbear init script into sync with the systemd service
file (dropbearkey.service supports RSA host keys only) and with
recent versions of openssh which deprecate DSA host keys.
https://www.gentoo.org/support/news-items/2015-08-13-openssh-weak-keys.html
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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This patch adds DROPBEAR_RSAKEY_ARGS and DROPBEAR_DSSKEY_ARGS optional
parameters to /etc/default/dropbear. The contents are simply passed to
the 'dropbearkey' program when generating a host key.
The default keysize for RSA is currently 2048 bits. It takes a CortexA9
running at 700MHz between 4 and 10 seconds to calculate a keypair. The
board boots Linux in about a second, but you have to wait for several
seconds because of the keypair generation. This patch allows one to put
the line DROPBEAR_RSAKEY_ARGS="-s 1024" into /etc/default/dropbear, and
have a host key generated in about 0.2 seconds on the same CPU. This is
particulary useful for read-only rootfs systems which generate a key on
each boot.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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Old init script killed all dropbear processes when doing stop/restart
including open SSH sessions which is very annoying.
Signed-off-by: Roman I Khimov <khimov@altell.ru>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Dropbear does not start when the host key is empty and it is possible
that a device is switched off before the host key is generated. This
is possible because the dropbearkey code doesn't create a temporary
file first. Detect truncated keys and then remove them which will lead
to the re-generation. This way the dropbear process will always start.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.
The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.
Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Andre McCurdy
Mike Looijmans
Roman I Khimov
Holger Hans Peter Freyther
Richard Purdie