> So if you pass bad pointer to read(), why would you expect "number of
> bytes read" return? Its true that kernel can't simply not return
Because the standard says either you return the errorcode and no data
is transferred or for a partial I/O you return how much was done. Its
not neccessarily about accuracy either. If you do a 4k copy_from_user and
error after for some reason returning -Esomething thats fine providing you
didnt do anything that consumed data or shifted the file position etc
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu May 23 2002 - 22:00:23 EST