> The
> semantics of /dev/ptmx doesn't deal with opening the device as
> non-root but it is basically just making things faster for login and
> others.
This is incorrect.
> Now, what we want is a /dev/ptmx which normal users can open as
> well. This could be accomplished by setting ownership when opening
> /dev/ptmx if the calling process is not root. This would be a simple
> extension of the current semantics. For programs that used /dev/ptmx
> already (not many on linux I know..) you can start running it as
> non-root. No code needs to be changed.
No new code needs to be written. The exact functionality you desire can
be obtained using a recent 2.1.x linux kernel and a recent 2.1 glibc.
When these development version become stable enough to make it into the
standard distributions, uses of this functionality will become more
wide-spread. The new semantics comply with the Unix98 standard, which is
similar to both BSD and Sun-style pty management. Most portable
applications already support this.
Perhaps I should document this better.
--Scott
@ @
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C. Scott Ananian: cananian@lcs.mit.edu / Declare the Truth boldly and
Laboratory for Computer Science/Crypto / without hindrance.
Massachusetts Institute of Technology /META-PARRESIAS AKOLUTOS:Acts 28:31
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