From: Cam Macdonell <cam@cs.ualberta.ca>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Passing fds through a qemu char device
Date: Fri, 22 May 2009 16:32:32 -0600 [thread overview]
Message-ID: <4A172800.8080406@cs.ualberta.ca> (raw)
Hi,
I'm trying to pass eventfds between qemu processes and I'm trying to use
a qemu char device to do this. AFAICT with a qemu_chr_device the
polling handler only has support to call read()/write(), not
send/recvmsg() which are necessary to send and receive fds with
SCM_RIGHTS through the socket. Is this true or is there support in Qemu
for recvmsg() that I'm not seeing?
If not, some options I can see are to add qemu support for
qemu_chr_recvmsg() to call on the char device. Or I can simply manage
the socket outside of qemu_chr_device, but the polling is helpful for
notifications and I'd prefer to leverage qemu's existing support for that.
Thanks,
Cam
next reply other threads:[~2009-05-22 22:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-22 22:32 Cam Macdonell [this message]
2009-05-23 2:10 ` [Qemu-devel] Passing fds through a qemu char device Anthony Liguori
2009-05-26 17:47 ` Cam Macdonell
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