70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
"""
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Copyright 2018 Oliver Smith
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This file is part of pmbootstrap.
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pmbootstrap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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pmbootstrap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
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"""
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import os
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import logging
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import pmb.helpers.run
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import pmb.helpers.other
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import pmb.parse
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import pmb.parse.arch
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def is_registered(arch_qemu):
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return os.path.exists("/proc/sys/fs/binfmt_misc/qemu-" + arch_qemu)
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def register(args, arch):
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"""
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Get arch, magic, mask.
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"""
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arch_qemu = pmb.parse.arch.alpine_to_qemu(arch)
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if is_registered(arch_qemu):
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return
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pmb.helpers.other.check_binfmt_misc(args)
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pmb.chroot.apk.install(args, ["qemu-" + arch_qemu])
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info = pmb.parse.binfmt_info(args, arch_qemu)
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# Build registration string
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# https://en.wikipedia.org/wiki/Binfmt_misc
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# :name:type:offset:magic:mask:interpreter:flags
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name = "qemu-" + arch_qemu
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type = "M"
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offset = ""
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magic = info["magic"]
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mask = info["mask"]
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interpreter = "/usr/bin/qemu-" + arch_qemu + "-static"
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flags = "C"
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code = ":".join(["", name, type, offset, magic, mask, interpreter,
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flags])
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# Register in binfmt_misc
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logging.info("Register qemu binfmt (" + arch_qemu + ")")
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register = "/proc/sys/fs/binfmt_misc/register"
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pmb.helpers.run.root(
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args, ["sh", "-c", 'echo "' + code + '" > ' + register])
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def unregister(args, arch):
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arch_qemu = pmb.parse.arch.alpine_to_qemu(arch)
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binfmt_file = "/proc/sys/fs/binfmt_misc/qemu-" + arch_qemu
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if not os.path.exists(binfmt_file):
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return
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logging.info("Unregister qemu binfmt (" + arch_qemu + ")")
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pmb.helpers.run.root(args, ["sh", "-c", "echo -1 > " + binfmt_file])
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