9pfs/proxy: Check return value of proxy_marshal()
commitacef3f8b47060f05e13de5b615268c39b274aab0
authorGreg Kurz <groug@kaod.org>
Mon, 11 Jan 2021 09:49:56 +0000 (11 10:49 +0100)
committerGreg Kurz <groug@kaod.org>
Thu, 21 Jan 2021 16:49:45 +0000 (21 17:49 +0100)
tree2fdf6504322ef3b22bf73aa890358e77e5bca936
parentfef80ea073c4862bc9eaddb6ddb0ed970b8ad7c4
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>
hw/9pfs/9p-proxy.c