Date: Tue, 11 Aug 2009 09:06:26 +0300 From: Krassimir Slavchev <krassi@bulinfo.net> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Help with device drivers Message-ID: <4A810A62.1070408@bulinfo.net> In-Reply-To: <200908101527.32952.hselasky@c2i.net> References: <4A8006F3.5020800@bulinfo.net> <200908101527.32952.hselasky@c2i.net>
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Hans Petter Selasky wrote: > On Monday 10 August 2009 13:39:31 Krassimir Slavchev wrote: >> If I try to open the device from userland with: >> fd = open("/dev/xxx0", O_RDWR) it fails because open() tries to open the >> device for reading first and then for writing. > > There is a bug in the code. If you open using read+write flags, then the FIFO > open routine is called two times. The RD+WR check should be moved to the ioctl > routine. > > http://perforce.freebsd.org/chv.cgi?CH=167171 Thanks! It seems that sys/dev/usb/storage/urio.c should be fixed too? Best Regards > > --HPS > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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