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Automatically mount binfmt_misc if not mounted already (MR 1923)

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This is needed at least on Alpine Linux, and probably on distros like NixOS as well.

Fixes: https://gitlab.com/postmarketOS/pmbootstrap/-/issues/1135
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Bart Ribbers 2020-04-22 11:13:32 +02:00 • committed by Oliver Smith
parent e8e560e18e
commit 5b831d899d
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1 changed files with 8 additions and 6 deletions
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14
pmb/helpers/other.py
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@ -48,17 +48,19 @@ def check_binfmt_misc(args):
"""
Check if the 'binfmt_misc' module is loaded by checking, if
/proc/sys/fs/binfmt_misc/ exists. If it exists, then do nothing.
Otherwise, raise an exception pointing to user to the Wiki.
Otherwise, load the module and mount binfmt_misc.
If that fails as well, raise an exception pointing the user to the wiki.
"""
path = "/proc/sys/fs/binfmt_misc/status"
if os.path.exists(path):
return
link = "https://postmarketos.org/binfmt_misc"
raise RuntimeError("It appears that your system has not loaded the"
" module 'binfmt_misc'. This is required to run"
" foreign architecture programs with QEMU (eg."
" armhf on x86_64):\n See: <" + link + ">")
pmb.helpers.run.root(args, ["modprobe", "binfmt_misc"])
pmb.helpers.run.root(args, ["mount", "-t", "binfmt_misc", "none", "/proc/sys/fs/binfmt_misc"])
if not os.path.exists(path):
link = "https://postmarketos.org/binfmt_misc"
raise RuntimeError(f"Failed to set up binfmt_misc, see: {link}")
def migrate_success(args, version):