How to file descriptors get inherited by exec'd processes?

[Patrick Doyle]

Could somebody please point me to the location in the source code where
file descriptors get inhereted by an exec'd process.  I see in
"dcrt0.cc" where 'stdio_init()' is called, which sets up the fdtab for
stdin, stdout, and stderr (only), but I can't seem to find where the
rest of the opened file descriptors are inherited.  I realize that this
is a bit off topic for this particular list, but I know the folks who
know the answer read this list.

Thanks for the help...

--wpd

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