From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ross Smith To: cygwin@sources.redhat.com Subject: Re: file descriptors opened as text files Date: Wed, 14 Feb 2001 16:54:00 -0000 Message-id: <3A8B284F.8071591E@ihug.co.nz> References: <5.0.2.1.0.20010214171434.00a8f6f0@pop.ma.ultranet.com> <5.0.2.1.0.20010214175309.00a92220@pop.ma.ultranet.com> X-SW-Source: 2001-02/msg00825.html "Larry Hall (RFK Partners Inc)" wrote: > > At 05:43 PM 2/14/01, Jean Delvare wrote: > > >That may explain why I could not see the flag on linux's man pages. But > >there is no man page for open(2) on Cygwin, right ? Then, where am I > >supposed to find the value for this flag, if it ever exist ? I can't just > >invent it, I guess it won't work ;) > > "b" is fine, as you indicated before. Check the MSDN library at > msdn.microsoft.com for one source. I'm sure you can find this information > in any POSIX complaint UNIX API reference. Possibly not. I don't have a copy of the relevant Posix standard, but the Single Unix Standard (which I believe is intended to be a superset of Posix) doesn't recognise the binary/text mode distinction. However, the C standard mandates that fopen() uses text mode by default in the absence of the "b" flag, and the C++ standard says the same thing about iostreams. So, given that the two higher-level I/O APIs are both required to default to text mode, it seems perfectly reasonable to me for the lowest-level one, open(), to do the same thing in the absence of any standard requirements, and it looks as though the Cygwin designers have followed the same reasoning. There's no standard way to select the mode for open(), but Cygwin provides the non-standard one O_TEXT. Include it in your open mode flags (second argument to open()). -- Ross Smith The Internet Group, Auckland, New Zealand ======================================================================== "Normally he was insane, but he had lucid moments when he was merely stupid." -- Heinrich Heine -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple