9pfs: fail local_statfs() earlier

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)
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index c5f7dcd131ec44ee4d0c46be50bd1dcf2936414c..09b9b576c01bb85252e3077a977150171c080659 100644 (file)
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -1054,6 +1054,9 @@ 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;