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Re: [Qemu-trivial] [PATCH] Keep pty slave file descriptor open until the
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-trivial] [PATCH] Keep pty slave file descriptor open until the master is closed |
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Date: |
Mon, 11 Jan 2016 10:16:12 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 |
On 11/12/2015 12:29, Ashley Jonathan wrote:
> I have experienced a minor difficulty using QEMU with the "-serial
> pty" option:
>
> If a process opens the slave pts device, writes data to it, then
> immediately closes it, the data doesn't reliably get delivered to the
> emulated serial port. This seems to be because a read of the master
> pty device returns EIO on Linux if no process has the pts device
> open, even when data is waiting "in the pipe".
>
> A fix seems to be for QEMU to keep the pts file descriptor open until
> the pty is closed, as per the below patch.
You need to include a "Signed-off-by: Ashley Jonathan <address@hidden>"
line in the commit message, meaning that you have read and understood the
"Developer Certificate of Origin":
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/SubmittingPatches?id=f6f94e2ab1b33f0082ac22d71f66385a60d8157f#n297
Just reply to this message with the above line.
Paolo