Re: Getting the User/Owner of another process
Re: Getting the User/Owner of another process
- Subject: Re: Getting the User/Owner of another process
- From: "Alastair J.Houghton" <email@hidden>
- Date: Tue, 30 Sep 2003 16:31:16 +0100
On Tuesday, September 30, 2003, at 03:51 pm, John Farmer wrote:
I need to be able to get the User/Owner of another process, like
Finder. I
need to do this because I need to get the user name of the person
currently
logged in. Now before you berate me, I did try to use NSUserName(),
NSFullUserName() functions.
There seems to be a very subtle bug in these functions.
No, there isn't a bug. Your expectation is wrong; given that many
people can be logged in to a machine simultaneously, and given that
they are executing as the "root" user, it wouldn't make sense for these
functions to return anything else.
So I need to someway get the name of the person logged in, in a
Startup Item
so I can setup the last preferences for the app and driver I am
writing.
There are three *big* problems here:
1. There might not be anyone logged in.
2. There might be multiple users logged in (i.e. several Finder
processes running as different users/groups).
3. Panther's fast user switching feature means that the user that owns
the main display can change at the click of a button. This may well
cause you complications.
What is your driver for? You need to think carefully about which user
should own your device and therefore under what circumstances you
should apply their preferences. For example, a driver for a removable
media device should probably respect the preferences of whoever mounted
it, whereas a driver for an input device should respect the preferences
of the user that currently owns the main display.
Kind regards,
Alastair.
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