On Fri, 2015-03-20 at 16:43 -0400, Ryan Lortie wrote:
> What led me to this was the dup3() system call. This is a variant of
> dup2() that was added (as part of the efforts mentioned above) to avoid
> the O_CLOEXEC race:
>
> int dup3(int oldfd, int newfd, int flags);
>
> unfortunately:
>
> dup3(0, -1, 0) = -1 EBADF (Bad file
> descriptor)
>
> which means that using this as a stand-in for dup() is a no-go.
Doesn't the following standard POSIX functionality provide what you
want?
fcntl(fd, F_DUPFD_CLOEXEC, 0)
Regards,
Jürg
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