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collector/dmesg: Fix dmesg variant detection

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Check for all the CLI options we are going to use when deciding whether
to use the system's dmesg or the one we ship via busybox.
This commit is contained in:
Douglas Raillard 2025-01-30 11:54:51 +00:00 committed by Marc Bonnici
parent a3765cc27d
commit facd251edb
1 changed files with 10 additions and 6 deletions
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16
devlib/collector/dmesg.py
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@ -203,12 +203,16 @@ class DmesgCollector(CollectorBase):
))
self.level = level
# Check if dmesg is the BusyBox one, or the one from util-linux in a
# recent version.
# Note: BusyBox dmesg does not support -h, but will still print the
# help with an exit code of 1
self.basic_dmesg = '--force-prefix' not in \
self.target.execute('dmesg -h', check_exit_code=False)
# Check if we have a dmesg from a recent util-linux build, rather than
# e.g. busybox's dmesg or the one shipped on some Android versions
# (toybox). Note: BusyBox dmesg does not support -h, but will still
# print the help with an exit code of 1
help_ = self.target.execute('dmesg -h', check_exit_code=False)
self.basic_dmesg = not all(
opt in help_
for opt in ('--facility', '--force-prefix', '--decode', '--level')
)
self.facility = facility
try:
needs_root = target.read_sysctl('kernel.dmesg_restrict')