Date: Fri, 03 Jan 1997 11:16:25 -0800 From: Paul Traina <pst@shockwave.com> To: Poul-Henning Kamp <phk@critter.dk.tfs.com> Cc: jkh@freebsd.org, current@freebsd.org Subject: Re: utmp changes Message-ID: <199701031916.LAA15717@precipice.shockwave.com> In-Reply-To: Your message of "Fri, 03 Jan 1997 19:45:59 %2B0100." <18403.852317159@critter.dk.tfs.com>
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From: Poul-Henning Kamp <phk@critter.dk.tfs.com>
Subject: Re: utmp changes
No what I wanted was a space for the key-name for ssh and a flag for the
fact that the session is encrypted.
OK, then it was someone else who was talking about larger hostname sizes
and IP addresses. I'm more concerned about either making the space now,
or at least creating a "RESERVED" area (we should do that anyway) in utmp
and wtmp.
To start the ball rolling, let me just suggest the following. I know it's
not pretty, and I'm not so sure that the remote ssh key belongs in utmp,
but this is what I conceive as changing. The big thing is I'd like to fix
the size of the utmp structure once and for all, and define the reserved
area as must-be-zero so we don't get in the mess we just got in ever again. :-(
#define UT_NAMESIZE 16
#define UT_LINESIZE 8
#define UT_HOSTSIZE 64 /* was 16 */
#define UT_HADDRSIZE 16 /* remote host address */
#define UT_KEYSIZE 16 /* for ssh key? hmmm... I'm not so sure... */
#define UT_FLAGSIZE 1
struct lastlog {
time_t ll_time;
char ll_line[UT_LINESIZE];
char ll_host[UT_HOSTSIZE];
char ll_hadd[UT_HADDSIZE]; /* new */
char _ll_reserved[256 - cruft]; /* must be zero */
};
struct utmp {
char ut_line[UT_LINESIZE];
char ut_name[UT_NAMESIZE];
char ut_host[UT_HOSTSIZE];
char ut_haddr[UT_HADDSIZE];
char ut_flags[UT_FLAGSIZE];
long ut_time;
char ut_key[UT_KEYSIZE]; /* do we really want this in utmp? */
char _ut_reserved[256 - cruft]; /* must be zero */
};
#endif /* !_UTMP_H_ */
>(I'm really unhappy about X11 code changing. Perhaps it's time to augment
> the utmp/wtmp write stuff in libutil into a full blown read/write package?)
yes.
--
Poul-Henning Kamp | phk@FreeBSD.ORG FreeBSD Core-team.
http://www.freebsd.org/~phk | phk@login.dknet.dk Private mailbox.
whois: [PHK] | phk@tfs.com TRW Financial Systems, In
>>c.
Power and ignorance is a disgusting cocktail.
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