Michael Vogt
0d21b105d2
This commit tweaks the API of sd_varlink_call_and_upgrade and
sd_varlink_reply_and_upgrade to return two independent fds even
if the internal {input,output}_fd are the same (e.g. a socket).
This makes the external API easier as there is no longer the risk
of double close. The sd_varlink_call_and_upgrade() is not in a
released version of systemd yet so I presume it is okay to update
it still.
This also allowed some simplifications in varlinkctl.c now that
the handling is easier.
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