forked from Mirror/pmbootstrap
f21c216a26
While at it, also remove unnecessary "#!/usr/bin/env python3" in files that only get imported, and adjust other empty/comment lines in the beginnings of the files for consistency. This makes files easier to read, and makes the pmbootstrap codebase more consistent with the build.postmarketos.org codebase.
53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
# Copyright 2020 Oliver Smith
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# SPDX-License-Identifier: GPL-3.0-or-later
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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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