normally succeed (because root can su to anyone), but pam_acct_mgmt()
will most likely fail, causing su to log a confusing "pam_acct_mgmt:
error in service module" message. To avoid this, call getpwnam()
before pam_acct_mgmt().
Sponsored by: registrar.no
sometimes, su will receive a SIGTTOU when parent su tries to set child
su's process group as foreground group, and su will be stopped unexpectly,
ignoring SIGTTOU fixes the problem.
Noticed by: fjoe
- if operating "as them" (su -l), use pam_{open,close}_session()
- allow PAM to override $HOME (pam_chroot needs this)
- chdir early, because later on we may be chrooted and chdir will fail
Also use pid_t instead of int where applicable.
signal never affects su directly, some shells changes its pgrp at running
or suspended time, so a broadcast SIGTSTP from child will mess up su's job
control.
Discussed with: bde
also set the user's MAC label as part of the user credential setup
by setting setusercontext(3)'s SETMAC flag. By default, change only
traditional process properties.
Approved by: re
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
kill login shell on either "suspend/fg" or "stop $$/fg" for tcsh. Since
this bug occurse on -stable too, it is not kernel threads bug.
Submitted by: David Xu <bsddiy@yahoo.com>
(see 'zsh exits upon ^C' thread). This may be temporary be he's been
running it for a year without incident so we should be golden with it.
Approved by: des
as a user ID -> has a user ID
command constitutes of -> command consists of
PR: misc/36523
Submitted by: Chris Pepper <pepper@mail.rockefeller.edu>
MFC after: 3 days
The remaining problem of converting highly incompatible pointer types
is done by "laundering" the value through a union.
This solves the problem (in my own mind) of how a "const char *" _ever_
actually gets a value in a WARNS=2 world.
for authentication to PAM. This meens that WHEELSU-type logic can
now be effected in the pam.conf "su" configuration stack. While here,
clean up the mess that the code had assumed over years of hacking by
folks using different styles. ANSIfy.
There is more policy in here that can be handed over to PAM. This will
be revisited.
The PAM_FAIL_CHECK and PAM_END macros in su.c came from the util-linux
package's PAM patches to the BSD login.c
Submitted by: "David J. MacKenzie" <djm@web.us.uu.net>
