File 0399-9pfs-fail-local_statfs-earlier.patch of Package qemu.6354

From e5849f5959f6a2829709cf7e0df236ac7019a500 Mon Sep 17 00:00:00 2001
From: Greg Kurz <groug@kaod.org>
Date: Mon, 6 Mar 2017 17:34:01 +0100
Subject: [PATCH] 9pfs: fail local_statfs() earlier
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If we cannot open the given path, we can return right away instead of
passing -1 to fstatfs() and close(). This will make Coverity happy.

(Coverity issue CID1371729)

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Daniel P. berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
(cherry picked from commit 23da0145cc4be66fdb1033f951dbbf140f457896)
[BR: Fix and/or infrastructure for BSC#1020427 CVE-2016-9602]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/9pfs/9p-local.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index 7b88e10b96..58c002ef7e 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -1045,6 +1045,9 @@ static int local_statfs(FsContext *s, V9fsPath *fs_path, struct statfs *stbuf)
     int fd, ret;
 
     fd = local_open_nofollow(s, fs_path->data, O_RDONLY, 0);
+    if (fd == -1) {
+        return -1;
+    }
     ret = fstatfs(fd, stbuf);
     close_preserve_errno(fd);
     return ret;