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[Qemu-devel] [PATCH v3] qemu-char: Fix missed data on unix socket
From: |
pyssling |
Subject: |
[Qemu-devel] [PATCH v3] qemu-char: Fix missed data on unix socket |
Date: |
Fri, 17 Jul 2015 17:11:54 +0000 |
From: Nils Carlson <address@hidden>
Commit 812c1057 introduced HUP detection on unix and tcp sockets prior
to a read in tcp_chr_read. This unfortunately broke CloudStack 4.2
which relied on the old behaviour where data on a socket was readable
even if a HUP was present.
A working solution seems to be to simply check for a HUP after
reading all available data, i.e. recv returns a negative value.
Signed-off-by: Nils Carlson <address@hidden>
---
qemu-char.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/qemu-char.c b/qemu-char.c
index 617e034..f92fcee 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2847,12 +2847,6 @@ static gboolean tcp_chr_read(GIOChannel *chan,
GIOCondition cond, void *opaque)
uint8_t buf[READ_BUF_LEN];
int len, size;
- if (cond & G_IO_HUP) {
- /* connection closed */
- tcp_chr_disconnect(chr);
- return TRUE;
- }
-
if (!s->connected || s->max_size <= 0) {
return TRUE;
}
@@ -2860,7 +2854,7 @@ static gboolean tcp_chr_read(GIOChannel *chan,
GIOCondition cond, void *opaque)
if (len > s->max_size)
len = s->max_size;
size = tcp_chr_recv(chr, (void *)buf, len);
- if (size == 0) {
+ if (size == 0 || (size < 0 && (cond & G_IO_HUP))) {
/* connection closed */
tcp_chr_disconnect(chr);
} else if (size > 0) {
--
1.7.10.4
- [Qemu-devel] [PATCH v3] qemu-char: Fix missed data on unix socket,
pyssling <=