gregory-nutt commented on code in PR #10602:
URL: https://github.com/apache/nuttx/pull/10602#discussion_r1324969904
##########
include/stdio.h:
##########
@@ -244,6 +244,11 @@ int dprintf(int fd, FAR const IPTR char *fmt, ...)
printf_like(2, 3);
int vdprintf(int fd, FAR const IPTR char *fmt, va_list ap)
printf_like(2, 0);
+/* Custom stream operation fopencookie. */
+
+FAR FILE *fopencookie(FAR void *cookie, FAR const char *mode,
+ cookie_io_functions_t io_funcs);
+
Review Comment:
It is prohibited to add non-standard interfaces to the OS. We are purely
standards based and non-standard, ad hoc OS interfaces are generally prohibited.
Hmm... I see that Linux does support this interface:
https://man7.org/linux/man-pages/man3/fopencookie.3.html .. Is that a
sufficient justification? The man page lists only GNU as the justification for
the interface. That would not have been accepted in the past, but an objective
to have Linux compatibility has crept into our project mindset recently. So
maybe this is okay for that reason.
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