Boyd Stephen Smith Jr. wrote:
It reads those permissions from the file system stored on the block device
specified in the root= kernel command-line parameter.
File system permissions are persistent. If you don't see them change you
can't be sure whether nothing is trying to change them OR coming is trying to
change them, but to what they already are. If you do see them change, then
you can start isolating the problem.
OK. You are right! I was quite convinced that only the subdirectories'
permissions
are stored in the filesystem image, while root node permissions are defined by
the mountpoint.
My mistake!
So now I only have to investigate how the problem was generated.
Two affected machines are the ones in which I've upgraded disks without
reinstalation of the
system.
Maybe after formating the permissions in the filesystem were set to 0777, and
later, when
I copied the files with "cp -a" the permissions to the root node remained
untouched.
Otherwise I should assume that both systems got compromised :-(.
--
Thanks a lot,
Wojtek
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