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74 lines
2.8 KiB
Python
74 lines
2.8 KiB
Python
# Copyright 2019, David Wilson
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# !mitogen: minify_safe
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import mitogen.parent
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class Options(mitogen.parent.Options):
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container = None
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lxc_attach_path = 'lxc-attach'
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def __init__(self, container, lxc_attach_path=None, **kwargs):
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super(Options, self).__init__(**kwargs)
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self.container = container
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if lxc_attach_path:
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self.lxc_attach_path = lxc_attach_path
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class Connection(mitogen.parent.Connection):
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options_class = Options
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child_is_immediate_subprocess = False
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create_child_args = {
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# If lxc-attach finds any of stdin, stdout, stderr connected to a TTY,
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# to prevent input injection it creates a proxy pty, forcing all IO to
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# be buffered in <4KiB chunks. So ensure stderr is also routed to the
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# socketpair.
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'merge_stdio': True
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}
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eof_error_hint = (
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'Note: many versions of LXC do not report program execution failure '
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'meaningfully. Please check the host logs (/var/log) for more '
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'information.'
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)
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def _get_name(self):
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return u'lxc.' + self.options.container
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def get_boot_command(self):
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bits = [
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self.options.lxc_attach_path,
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'--clear-env',
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'--name', self.options.container,
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'--',
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]
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return bits + super(Connection, self).get_boot_command()
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