On Thu, 12 Sep 2019 at 13:05, Alex Bennée <alex.ben...@linaro.org> wrote: > > > Peter Maydell <peter.mayd...@linaro.org> writes: > > + /* > > + * We implement SH_EXT_STDOUT_STDERR, so: > > + * open for read == stdin > > + * open for write == stdout > > + * open for append == stderr > > + */ > > I love the way the spec documents field2 as an ISO C fopen() mode and > then an extension literally subverts the meaning to be something else. > Where the designers worried about adding a SYS_OPEN_TTY function to the > interface?
It's just extending the existing convention of "open ::tt as read for stdin and write for stdout" a bit. IIRC some existing implementations actually did this as a sort of undocumented extra. thanks -- PMM
