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[Qemu-devel] [PATCH v2 04/15] coroutine-io: handle zero returns from rec
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH v2 04/15] coroutine-io: handle zero returns from recv |
Date: |
Fri, 16 Sep 2011 16:25:41 +0200 |
When the other side is shutdown, read returns zero (writes return EPIPE).
In this case, care must be taken to avoid infinite loops. This error
was already present in sheepdog.
Cc: MORITA Kazutaka <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
cutils.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/cutils.c b/cutils.c
index b302020..295187f 100644
--- a/cutils.c
+++ b/cutils.c
@@ -501,8 +501,11 @@ static int do_sendv_recvv(int sockfd, struct iovec *iov,
int len, int offset,
}
break;
}
- iovlen--, p++;
+ if (rc == 0) {
+ break;
+ }
ret += rc;
+ iovlen--, p++;
}
#endif
}
@@ -567,6 +570,9 @@ int coroutine_fn qemu_co_sendv(int sockfd, struct iovec
*iov,
}
break;
}
+ if (ret == 0) {
+ break;
+ }
total += ret, len -= ret;
}
--
1.7.6
- [Qemu-devel] [PATCH v2 01/15] sheepdog: add coroutine_fn markers, (continued)
[Qemu-devel] [PATCH v2 04/15] coroutine-io: handle zero returns from recv,
Paolo Bonzini <=
[Qemu-devel] [PATCH v2 05/15] block: emulate .bdrv_flush() using .bdrv_aio_flush(), Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 06/15] block: group together the plugging of synchronous IO emulation, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 12/15] nbd: add support for NBD_CMD_TRIM, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 09/15] nbd: fix error handling in the server, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 10/15] nbd: add support for NBD_CMD_FLUSH, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 08/15] block: add bdrv_co_discard and bdrv_aio_discard support, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 07/15] block: add bdrv_co_flush support, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 14/15] nbd: split requests, Paolo Bonzini, 2011/09/16
[Qemu-devel] [PATCH v2 11/15] nbd: add support for NBD_CMD_FLAG_FUA, Paolo Bonzini, 2011/09/16