change some g_strconcat's to g_build_filename's to address #118040. still

Thu Jul 24 14:58:23 2003  George Lebl <jirka@5z.com>

	* daemon/gdm.c, daemon/slave.c, daemon/auth.c: change some
	  g_strconcat's to g_build_filename's to address #118040.
	  still more need to be converted

	* gdm.spec.in, daemon/gdm.h, config/gdm.conf.in, config/Makefile.am,
	  configure.in: By default use logdir of /var/log/gdm just
	  like redhat does it

	* daemon/gdm.c: check logdir to exist and if not set it to
	  ServAuthDir

	* gdm.spec.in, daemon/gdm.c, config/Makefile.am:  Make the
	  ServAuthDir permissions to be 1770 with owenership root.gdm.
	  That makes it impossible for the gdm user to run DoS attacks
	  against the gdm daemon (though without any process limits set
	  it can still somewhat do that)

	* daemon/slave.c, daemon/display.c, daemon/gdm.c, daemon/misc.c,
	  daemon/server.c: Hunt more races and hangs.  Make sure we really
	  don't do anything bad in signal handlers by making a setjmp
	  at the beginning of the slave_start function and returning
	  there from signal handlers to do final cleanup kind of stuff.
	  Also when we are receiving TERM signals while waiting on stuff
	  to die, be very un-nice to things and SIGKILL them.  Also stop
	  using sleep if we might be using alarm at the same time.

	* daemon/display.c: whack non-useful signal block push on unmanage,
	  and if we get a TERM signal while waiting on the slave, then send
	  a TERM signal to the slave again.

	* daemon/errorgui.c: set USER, USERNAME and LOGNAME to "gdm" so that
	  they don't end up root by some mistake

	* daemon/slave.c: Use home of root rather then /root for the home
	  directory of gdmsetup.  Also if we can't change to the home
	  directory chdir to / instead of leaving it at servauthdir.
	  Be anal about COOKIEs in the logfile.  Also when things go
	  just a bit wrong and not completely whacko, don't ABORT but
	  just REMANAGE, the toplevel loop of death will handle things
	  for us correctly.  And setsid a very close to the start of
	  the session to avoid a race ABORTing a display by mistake.

	* daemon/slave.c: make the PostLogin behave just like PostSession
	  with respect to the return value

	* daemon/verify-pam.c: avoid races on termination with the
	  verify_cleanup and handle some cases where crashes may (but
	  should not) occur.

	* daemon/gdm.c: whack unneeded signal blockers (the main daemon
	  is all async with a nice mainloop)

	* gui/gdmchooser.c: handle HUP gracefully, when one of the
	  config options we care about changes just restart self
	  instead of

	* gui/gdmlogin.c, gui/greeter/greeter_item_ulist.c: make
	  the username bold

	* docs/C/gdm.xml: update the PostLogin behaviour and the permissions
	  on the ServAuthDir

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