2 Aug
2021
2 Aug
'21
6:18 a.m.
On Sun, Aug 1, 2021 at 8:13 PM Andrew Warkentin <andreww591(a)gmail.com> wrote
To start the child the parent would either
call exec() to start the child running a different
program, or call a
new function that starts the child with a parent-provided entry point
and whatever memory mappings the parent set up.
This is what I plan to do on the OS I'm writing
(manipulating the child's state won't require any additional
primitives beyond regular file I/O since literally all process state
will have a file-based interface).
In that case you don't need *any* primitive except create_empty_process():
you can do exec() by opening the file, writing to /proc/<child>/mem and
then to <proc/<child>/pc-and-go.