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Register qemu-arm-static binfmt handler if not already present.

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Mingyang Li
2026-05-30 10:11:56 -07:00
parent c9b912bfab
commit 26aeca2926
1 changed files with 5 additions and 1 deletions
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6
Makefile
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@@ -159,7 +159,11 @@ brainux:
sudo cp /usr/bin/qemu-arm-static brainux/usr/bin/ sudo cp /usr/bin/qemu-arm-static brainux/usr/bin/
sudo cp ./os-brainux/setup_brainux.sh brainux/ sudo cp ./os-brainux/setup_brainux.sh brainux/
sudo ./os-brainux/override-pre.sh ./os-brainux/override ./brainux sudo ./os-brainux/override-pre.sh ./os-brainux/override ./brainux
# Register qemu-arm-static binfmt handler if not already present.
# The F (fixed) flag makes the kernel resolve the interpreter from the
# host filesystem so it works inside the chroot even without qemu in it.
# This is a no-op if the entry already exists (e.g. in CI or native Linux).
sudo bash -c 'mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc 2>/dev/null; test -e /proc/sys/fs/binfmt_misc/qemu-arm || echo ":qemu-arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm-static:F" > /proc/sys/fs/binfmt_misc/register'
# Allow qemu-arm-static to reserve the guest address space at low virtual # Allow qemu-arm-static to reserve the guest address space at low virtual
# addresses (0x1000). On Linux hosts vm.mmap_min_addr defaults to 65536 # addresses (0x1000). On Linux hosts vm.mmap_min_addr defaults to 65536
# which blocks the reservation, causing armel binaries like sqv (apt's # which blocks the reservation, causing armel binaries like sqv (apt's