Large file support, mkstemp, and off_t

Allen Webb allenwebb at google.com
Fri Mar 24 05:02:23 AEDT 2023


On Wed, Mar 22, 2023 at 5:59 PM Damien Miller <djm at mindrot.org> wrote:
>
> On Wed, 22 Mar 2023, Allen Webb wrote:
>
> > We are trying to enable large file support for everything built for
> > ARM on ChromeOS and openssh uses mkstemp which has a 64-bit version
> > for compatibility with open64. When looking into enabling the large
> > file support flags, I noticed:
> >
> > `void    start_progress_meter(const char *, off_t, off_t *);`
> >
> > in progressmeter.h which would have different ABIs with and without
> > large file support. You all probably ought to avoid exposing off_t in
> > any external-facing APIs.
>
> OpenSSH doesn't have any external-facing APIs though, we don't ship
> a library for others to use. progressmeter.h is just for scp and sftp.
>
> -d

Thanks, that sounds good.


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