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author | Stefan Sperling <ssperling@sysmocom.de> | 2018-02-22 18:16:29 +0100 |
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committer | Stefan Sperling <ssperling@sysmocom.de> | 2018-02-23 11:55:54 +0100 |
commit | 218c4de84f6d94a882e3a945332f53732bf2e134 (patch) | |
tree | 73ffa7542944cc9836149583baab14d8aae80920 /tests/sercomm | |
parent | 92decf2aa916353564a9dabe6871ab00e0f06a80 (diff) |
ensure that osmo_fsm vty commands are only installed once
There is a desire to install osmo_fsm vty commands automatically in
a library context, rather than requiring every application which
directly or indirectly uses osmo_fsm to run osmo_fsm_vty_add_cmd().
However, the function install_element_ve() asserts that elements
about to be installed have not already been installed.
This means we cannot shift responsibility into a library context
without first making sure that osmo_fsm commands are only installed
once per combined application+library context, because applications
won't know which commands any of its libraries has already installed.
A simple solution is to use a global flag which is checked by
osmo_fsm_vty_add_cmd() before installing osmo_fsm commands, and
is set once the commands have been installed. This way, no harm
is done if osmo_fsm_vty_add_cmd() is called multiple times.
Change-Id: I10b0b1c1c1bf44c3b8eafc465c1ee06ea2590682
Related: OS#2967
Diffstat (limited to 'tests/sercomm')
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