Re: [fuse-devel] porting libfuse 2.7.0 to Solaris

[Jan E. <je...@co...>]

On Aug 31 2007 12:34, Mark Phalan wrote:
>mount.c:282->290
>        struct pollfd pfd;
>
>        pfd.fd = fd;
>        pfd.events = 0;
>        res = poll(&pfd, 1, 0);
>        /* If file poll returns POLLERR on the device file descriptor,
>           then the filesystem is already unmounted */
>        if (res == 1 && (pfd.revents & POLLERR))
>            return;
>
>This doesn't work as desired on OpenSolaris with our FUSE kernel module.
>I'm trying to figure out whats it's trying to do..
>
>Is the Linux FUSE kernel module flagging something on the file
>descriptor (I can't look in the linux fuse kernel module due to
>licensing issues) which causes poll(2) to fail?
>
>What does it mean to call poll(2) with events set to 0? I had a look at
>the standard and it doesn't seem to be defined...

I suppose it means "don't tell me anything", which seems kinda pointless, but
nonetheless 'valid'. I wonder if testing for POLLRDHUP/WRHUP would not be
better in the first place...(I do not know the exact FUSE internals, so that is
just a guess).



	Jan
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