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[Qemu-devel] [PULL 07/23] char: drop data written to a disconnected pty
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 07/23] char: drop data written to a disconnected pty |
Date: |
Thu, 16 Feb 2017 15:31:31 +0100 |
From: Ed Swierk <address@hidden>
When a serial port writes data to a pty that's disconnected, drop the
data and return the length dropped. This avoids triggering pointless
retries in callers like the 16550A serial_xmit(), and causes
qemu_chr_fe_write() to write all data to the log file, rather than
logging only while a pty client like virsh console happens to be
connected.
Signed-off-by: Ed Swierk <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
chardev/char-pty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/chardev/char-pty.c b/chardev/char-pty.c
index 27eb85f..ecf2c7a 100644
--- a/chardev/char-pty.c
+++ b/chardev/char-pty.c
@@ -129,7 +129,7 @@ static int char_pty_chr_write(Chardev *chr, const uint8_t
*buf, int len)
/* guest sends data, check for (re-)connect */
pty_chr_update_read_handler_locked(chr);
if (!s->connected) {
- return 0;
+ return len;
}
}
return io_channel_send(s->ioc, buf, len);
--
1.8.3.1
- [Qemu-devel] [PULL 00/23] Misc patches for 2017-02-16, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 01/23] kvm/ioapic: dump real object instead of a fake one, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 02/23] ioapic: fix error report value of def version, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 03/23] kvm/ioapic: correct kvm ioapic version, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 04/23] test-vmstate: remove yield_until_fd_readable, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 05/23] qemu-char: socket backend: disconnect on write error, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 06/23] apic: reset apic_delivered global variable on machine reset, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 07/23] char: drop data written to a disconnected pty,
Paolo Bonzini <=
- [Qemu-devel] [PULL 09/23] gdbstub: Fix vCont behaviour, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 08/23] move vm_start to cpus.c, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 10/23] hw/char/mcf_uart: QOMify the ColdFire UART, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 11/23] cpu-exec: fix icount out-of-bounds access, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 13/23] cpu-exec: avoid cpu_loop_exit in cpu_handle_interrupt, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 12/23] cpu-exec: tighten barrier on TCG_EXIT_REQUESTED, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 14/23] cpu-exec: avoid repeated sigsetjmp on interrupts, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 16/23] qemu-doc: Clarify that -vga std is now the default, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 15/23] cpu-exec: remove outermost infinite loop, Paolo Bonzini, 2017/02/16
- [Qemu-devel] [PULL 17/23] qemu-nbd: Implement socket activation., Paolo Bonzini, 2017/02/16