o In practice: the comment indicates that all but umask and
environmental variables of the users login class are applied when su
occurs, unless -m is used to specify a class. This was incorrect;
in practice, the uid, gids, resources, and priority were set, and
then resources and priority were selectively removed. This meant
that some aspects of the user context were not set, including handling
of login events (wtmp, utmp), as well as the path specified in
login.conf.
o I changed it so that the behavior is the same, but instead,
LOGIN_SETALL is used, and appropriate flags are removed, including
the LOGIN_SETLOGIN and LOGIN_SETPATH entries that were implicitly
not present before. I also updated the comment to reflect
reality, selecting reality as the "correct" behavior.
o This has the practical benefit that as new LOGIN_SET* flags are
introduced, they are supported by su unless specifically disabled.
For example, of a LOGIN_SETLABEL flag is introduced to support
MAC labels determined by the user's login class, then su no longer
has to be modified.
o It might be desirable to have su use LOGIN_SETPATH depending on
its command line parameters, as it might or might not be
considered part of the "environment".
Obtained from: TrustedBSD Project
maxvnodes, numvnodes, freevnodes, nchstats, and numdirtybuffers.
o Make the hw.ncpu error checking code a little more rigorous by
sanity checking the returned data size.
o Didn't fix machine-dependent non-sysctl-exported variables:
intrnames, eintrnames, intrcnt, eintrcnt, as these variables are
defined and exported from machine-dependent kernel code in
assembly. This should probably be fixed somehow.
Added $FreeBSD tag (in the way the already present sccsid is
done). I've been told the rcsid stuff may be of dubious value
so I'm curious to know if folks (still) use it.
Submitted by: Brad Chisholm <blc@bsdwins.com>
a name clash with the library functions of the same name (in libncurses).
This problem was masked when building tset shared (the local symbols had
precedence), but caused tset to core dump when it was built -static.
Robert Watson
Will Andrews
Dag-Erling Smørgrav
John Baldwin
Nik Clayton
Ruslan Ermilov
Sheldon Hearn
Marcel Moolenaar
Kris Kennaway
David E. O'Brien
Joseph Koshy
Ben Smithurst
Alexey Zelkin
John W. De Boskey
Matthew Hunt
Paul Saab
David Greenman