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checkpatch: check for world-writeable sysfs/debugfs files

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Exporting world writable sysfs/debugfs files is usually a bad thing.  Warn
about it.

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Jones 2011-01-12 16:59:59 -08:00 committed by Linus Torvalds
parent c023e4734c
commit 88f8831c05
1 changed files with 5 additions and 0 deletions
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5
scripts/checkpatch.pl
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@ -2897,6 +2897,11 @@ sub process {
ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
}
}
if ($line =~ /debugfs_create_file.*S_IWUGO/ ||
$line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
WARN("Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
}
}
# If we have no input at all, then there is nothing to report on