fexecve needs to work with chroot

[Garrett D'Amore]

Reliance on /proc (and procfs) means that we won't support chroot. We should fix that. Our approach rather than creating a new syscall is to handle "/dev/fd/%d" specially, inside the exece() system call. This will extract the integer descriptor number, and do an fgetstartvp() to obtain the file descriptor, rather than looking up in the filesystem.

[Garrett D'Amore]

fixes #97 fexecve needs to work with chroot

→ <<cset e2373db76aaa>>

[Garrett D'Amore]

fixes #97 fexecve needs to work with chroot

→ <<cset 82f59712adda>>