permissions: 0.939
device: 0.895
PID: 0.823
performance: 0.816
graphic: 0.799
network: 0.697
hypervisor: 0.685
virtual: 0.672
semantic: 0.601
mistranslation: 0.587
boot: 0.568
files: 0.561
kernel: 0.553
ppc: 0.545
vnc: 0.521
risc-v: 0.506
socket: 0.484
register: 0.480
VMM: 0.476
architecture: 0.475
arm: 0.457
debug: 0.440
i386: 0.434
user-level: 0.426
TCG: 0.420
x86: 0.401
peripherals: 0.364
KVM: 0.358
assembly: 0.292

virtfs fails to access contents of non-readable directories
Description of problem:
Attempting to access a directory inside a non-readable directory via virtfs fails.
Steps to reproduce:
On host:
1. `mkdir -p test/foo/bar`
2. `echo hello world >test/foo/bar/baz.txt`
3. `chmod -r test/foo`

The following works on host:

```
$ ls test
foo
$ ls test/foo
ls: cannot open directory 'test/foo': Permission denied
$ ls test/foo/bar
baz.txt
```

However on guest:

```
bash-5.1# ls /test/
foo
bash-5.1# ls /test/foo/
ls: cannot open directory '/test/foo/': Permission denied
bash-5.1# ls /test/foo/bar/
ls: cannot access '/test/foo/bar/': Permission denied
```
Additional information:
I am guessing virtfs attempts to check rights (via access?) on the directory itself when obtaining an inode to give to the guest, however not having read access doesn't mean something can't be executed, especially for directories.