pseudo-tty driver
Dov Schwell
schwell at aecom2.AECOM.YU.EDU
Tue Mar 8 10:47:09 AEST 1988
I need to place a shell around an application, sort of like the way bc
controls dc. My problem is that the application checks to makke sure
that it's input is coming from a terminal. When I try opening a pipe
(using the pipe() system call) or just try redirecting from the command
like, the program complains. I need a way to create a device driver
from which I can filter input before sending it to the real device driver.
If I create a driver which does i/o through the real tty driver after
filtering the input, will this work? What can I not do from a device driver
(e.g can I do file i/o, or open a pipe to another program)? Any help would
be appreciated.
Yosef Gold
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