This fixes word splitting issue with nmcli args. Current kexec-tools
scripts won't call nmcli with correct arguments when there are space in
network interface name.
nmcli expects multiple parameters, but get_nmcli_value_by_field only
accepts two params and depends on shell word splitting to split the
_nm_show_cmd into multiple params, which is very fragile.
So switch the param order, simplified this function and now multiple
params can be used properly.
And get_nmcli_connection_show_cmd_by_ifname returns multiple
nmcli params in a single variable, it depend on shell word splitting to
split the words when calling nmcli. But this is very fragile and break
easily when there are any special character in the connection path.
This function is only introduced to get and cache the nmcli command
which contains the "connection name".
Actually only cache the "connection path" is enough. Callers should
just call get_nmcli_connection_apath_by_ifname to cache the path, and
a new helper get_nmcli_field_by_conpath is introduced here to get value
from nmcli. This way "connection path" can contain any character.
Also get rid of another nmcli_cmd usage in
get_nmcli_connection_apath_by_ifname which stores multiple params in a
single bash variable separated by space.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Adding a patch to kexec-tools
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