The touch differences can be explained by the touch(1) that you're using:
in the global zone, you're using /usr/bin/touch, but in the non-global, I
imagine that you're using /opt/local/bin/touch. These two implementations
differ, so not a huge surprise that their implementation details differ.
As for FIONREAD: indeed, that seems screwed up -- it seems to be returning
the number of bytes instead of storing in in the specified argument. I'll
get that fixed today...
- Bryan
On Wed, Dec 10, 2014 at 8:00 AM, Youzhong Yang via smartos-discuss <
[email protected]> wrote:
> Hello again,
>
> I downloaded smartos latest image (joyent_20141127T173954Z) and tested
> inotify using it.
>
> Two issues were observed:
>
> 1. ioctl(fd, FIONREAD, ...) does not work as expected. It does not return
> the number of bytes that are available to be read on an inotify instance.
>
> 2. In an OS zone, touching a file always generates an IN_CREATE event,
> even though the file already exists. This only happens in an OS zone, not
> in global zone.
>
> Attached is the test program I used for testing. Just compile and run it,
> then in another terminal window, 'touch /tmp/file' twice. Please look at
> the details at the end of this e-mail.
>
> Thanks,
>
> -Youzhong
>
> --- In global zone ---
> [root@batfs5999 /var/tmp]# ./inotify
> ioctl = 64, errno = 0, bufsize = 0
> got 48 bytes
> :: mask 256
> -> New file file created
> :: mask 4
> -> file ATTRIB
> ioctl = 32, errno = 0, bufsize = 0
> got 24 bytes
> :: mask 4
> -> file ATTRIB
>
> --- In OS zone ---
> [root@batfs5999-cifs0 /var/tmp]# ./inotify
> ioctl = 64, errno = 0, bufsize = 0
> got 48 bytes
> :: mask 256
> -> New file file created
> :: mask 4
> -> file ATTRIB
> ioctl = 64, errno = 0, bufsize = 0
> got 48 bytes
> :: mask 256
> -> New file file created
> :: mask 4
> -> file ATTRIB
>
> --- On Linux ---
> % ./inotify
> ioctl = 0, errno = 0, bufsize = 32
> got 32 bytes
> :: mask 256
> -> New file file created
> ioctl = 0, errno = 0, bufsize = 32
> got 32 bytes
> :: mask 4
> -> file ATTRIB
> ioctl = 0, errno = 0, bufsize = 32
> got 32 bytes
> :: mask 4
> -> file ATTRIB
>
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