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authorGreg Kurz <groug@kaod.org>2021-01-11 10:49:56 +0100
committerGreg Kurz <groug@kaod.org>2021-01-21 17:49:45 +0100
commitacef3f8b47060f05e13de5b615268c39b274aab0 (patch)
tree2fdf6504322ef3b22bf73aa890358e77e5bca936 /hw/9pfs/9p-proxy.c
parentfef80ea073c4862bc9eaddb6ddb0ed970b8ad7c4 (diff)
downloadfocaccia-qemu-acef3f8b47060f05e13de5b615268c39b274aab0.tar.gz
focaccia-qemu-acef3f8b47060f05e13de5b615268c39b274aab0.zip
9pfs/proxy: Check return value of proxy_marshal()
This should always successfully write exactly two 32-bit integers.
Make it clear with an assert(), like v9fs_receive_status() and
v9fs_receive_response() already do when unmarshalling the same
header.

Fixes: Coverity CID 1438968
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <161035859647.1221144.4691749806675653934.stgit@bahia.lan>
Signed-off-by: Greg Kurz <groug@kaod.org>
Diffstat (limited to 'hw/9pfs/9p-proxy.c')
-rw-r--r--hw/9pfs/9p-proxy.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
index 6f598a0f11..4aa4e0a3ba 100644
--- a/hw/9pfs/9p-proxy.c
+++ b/hw/9pfs/9p-proxy.c
@@ -537,7 +537,8 @@ static int v9fs_request(V9fsProxy *proxy, int type, void *response, ...)
     }
 
     /* marshal the header details */
-    proxy_marshal(iovec, 0, "dd", header.type, header.size);
+    retval = proxy_marshal(iovec, 0, "dd", header.type, header.size);
+    assert(retval == 4 * 2);
     header.size += PROXY_HDR_SZ;
 
     retval = qemu_write_full(proxy->sockfd, iovec->iov_base, header.size);