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Re: how does O_NOCTTY help? [Re: bug in chdir-safer
From: |
Paul Eggert |
Subject: |
Re: how does O_NOCTTY help? [Re: bug in chdir-safer |
Date: |
Sun, 12 Feb 2006 20:53:41 -0800 |
User-agent: |
Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) |
>> That's the basic idea, but I'm afraid it's a bit more complicated than
>> that. The process is exposed even after it closes the terminal, since
>> it doesn't relinquish the controlling terminal even after it closes
>> the corresponding file descriptor (certainly if other processes have
>> the terminal open -- even via an independent descriptor...
> Your use of `processes' means `processes in the same process group', right?
No, unfortunately (if my memory is correct) it's any process,
anywhere. This dates all the way back to a hack in 7th edition Unix,
which didn't have process groups. As I dimly recall, it was a bit of
a mess.
- how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/09
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/09
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/09
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Paul Eggert, 2006/02/10
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/10
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Paul Eggert, 2006/02/10
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/12
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer,
Paul Eggert <=
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Jim Meyering, 2006/02/14
- Re: how does O_NOCTTY help? [Re: bug in chdir-safer, Paul Eggert, 2006/02/14