Re: fcntl module

[Eric Blake]

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According to Eric Blake on 8/23/2009 8:37 PM:
> For that matter, proposing an
> O_SAFER to the glibc folks might be worthwhile.

With kernel support for O_SAFER, our *_safer paradigms could even be more
efficient (no fd_safer after the fact, so fewer kernel calls and less
temporary fd pressure).  Plus, the kernel folks have so far avoided having
to create dup + flags:

dup (n)                 -> fcntl (n, F_DUPFD, 0)
dup_safer (n)           -> fcntl (n, F_DUPFD, 3)
dup_noinherit (n)       -> fcntl (n, F_DUPFD_CLOEXEC, 0)
dup_safer_noinherit (n) -> fcntl (n, F_DUPFD_CLOEXEC, 3)

so everywhere that we care about *_safer, we either have a place for a new
flag or we can already specify a minimum.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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