XPost: linux.debian.devel.release
Chris Hofstaedtler <
zeha@debian.org> writes:
you are probably aware of the time_t-64bit migration :-)
However, this does not magically transition all data formats to 64bit
times. One such instance is the set of utmp/wtmp and lastlog files.
Thorsten Kukuk and others have been working on replacements for the
existing file formats and interfaces [1]; these are called wtmpdb
and lastlog2.
Some parties have requested that we do something in Debian [2]. If
we use Thorsten's work (and why not?)
Thorsten's code introduces new PAM modules to manage the new files,
so it should transparently work with most packages. Later, the
old interfaces can probably be turned off.
On the wiki [0] I have summarized what I know; a list of initial
work items; and some open questions mostly concerned with upgrading.
I invite you to read the wiki page and the background info, to
identify gaps
the chkrootkit package provides several utilities for examining some of
these files: chkutmp chkwtmp and check_wtmpx and chklastlog [a] -- it does
not use pam but reads the files in /var/log
How would I test these against the new files - i assume the new versions
are compatable but might need bigger variables in those utilities? (any assistance with that review is welcome - C is not my thing!)
[a] You can read these here ---
https://salsa.debian.org/pkg-security-team/chkrootkit but nb that there
are many patches in debian/patches that touch these (use gbp pq import
to see the patched versions)
[0] https://wiki.debian.org/pam_lastlog2%20and%20wtmpdb
[1] https://www.thkukuk.de/blog/Y2038_glibc_lastlog_64bit/
[2] https://bugs.debian.org/1068017
Richard
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