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-rw-r--r--test/apiv2/rest_api/test_rest_v2_0_0.py62
-rw-r--r--test/e2e/common_test.go14
-rw-r--r--test/e2e/exec_test.go190
-rw-r--r--test/e2e/run_test.go29
-rw-r--r--test/system/400-unprivileged-access.bats2
5 files changed, 281 insertions, 16 deletions
diff --git a/test/apiv2/rest_api/test_rest_v2_0_0.py b/test/apiv2/rest_api/test_rest_v2_0_0.py
index 2f9e62149..cc66dd5af 100644
--- a/test/apiv2/rest_api/test_rest_v2_0_0.py
+++ b/test/apiv2/rest_api/test_rest_v2_0_0.py
@@ -1,13 +1,15 @@
import json
+import os
import random
+import shutil
import string
import subprocess
+import sys
+import time
import unittest
from multiprocessing import Process
import requests
-import sys
-import time
from dateutil.parser import parse
from test.apiv2.rest_api import Podman
@@ -449,7 +451,7 @@ class TestApi(unittest.TestCase):
self.assertEqual(inspect.status_code, 404, inspect.content)
prune = requests.post(PODMAN_URL + "/v1.40/networks/prune")
- self.assertEqual(prune.status_code, 405, prune.content)
+ self.assertEqual(prune.status_code, 404, prune.content)
def test_volumes_compat(self):
name = "Volume_" + "".join(random.choice(string.ascii_letters) for i in range(10))
@@ -499,8 +501,18 @@ class TestApi(unittest.TestCase):
rm = requests.delete(PODMAN_URL + f"/v1.40/volumes/{name}")
self.assertEqual(rm.status_code, 204, rm.content)
+ # recreate volume with data and then prune it
+ r = requests.post(PODMAN_URL + "/v1.40/volumes/create", json={"Name": name})
+ self.assertEqual(create.status_code, 201, create.content)
+ create = json.loads(r.content)
+ with open(os.path.join(create["Mountpoint"], "test_prune"), "w") as file:
+ file.writelines(["This is a test\n", "This is a good test\n"])
+
prune = requests.post(PODMAN_URL + "/v1.40/volumes/prune")
self.assertEqual(prune.status_code, 200, prune.content)
+ payload = json.loads(prune.content)
+ self.assertIn(name, payload["VolumesDeleted"])
+ self.assertGreater(payload["SpaceReclaimed"], 0)
def test_auth_compat(self):
r = requests.post(
@@ -530,6 +542,50 @@ class TestApi(unittest.TestCase):
self.assertIn("Volumes", obj)
self.assertIn("BuildCache", obj)
+ def test_prune_compat(self):
+ name = "Ctnr_" + "".join(random.choice(string.ascii_letters) for i in range(10))
+
+ r = requests.post(
+ PODMAN_URL + f"/v1.40/containers/create?name={name}",
+ json={
+ "Cmd": ["cp", "/etc/motd", "/motd.size_test"],
+ "Image": "alpine:latest",
+ "NetworkDisabled": True,
+ },
+ )
+ self.assertEqual(r.status_code, 201, r.text)
+ create = json.loads(r.text)
+
+ r = requests.post(PODMAN_URL + f"/v1.40/containers/{create['Id']}/start")
+ self.assertEqual(r.status_code, 204, r.text)
+
+ r = requests.post(PODMAN_URL + f"/v1.40/containers/{create['Id']}/wait")
+ self.assertEqual(r.status_code, 200, r.text)
+ wait = json.loads(r.text)
+ self.assertEqual(wait["StatusCode"], 0, wait["Error"]["Message"])
+
+ prune = requests.post(PODMAN_URL + "/v1.40/containers/prune")
+ self.assertEqual(prune.status_code, 200, prune.status_code)
+ prune_payload = json.loads(prune.text)
+ self.assertGreater(prune_payload["SpaceReclaimed"], 0)
+ self.assertIn(create["Id"], prune_payload["ContainersDeleted"])
+
+ # Delete any orphaned containers
+ r = requests.get(PODMAN_URL + "/v1.40/containers/json?all=true")
+ self.assertEqual(r.status_code, 200, r.text)
+ for ctnr in json.loads(r.text):
+ requests.delete(PODMAN_URL + f"/v1.40/containers/{ctnr['Id']}?force=true")
+
+ prune = requests.post(PODMAN_URL + "/v1.40/images/prune")
+ self.assertEqual(prune.status_code, 200, prune.text)
+ prune_payload = json.loads(prune.text)
+ self.assertGreater(prune_payload["SpaceReclaimed"], 0)
+
+ # FIXME need method to determine which image is going to be "pruned" to fix test
+ # TODO should handler be recursive when deleting images?
+ # self.assertIn(img["Id"], prune_payload["ImagesDeleted"][1]["Deleted"])
+ self.assertIsNotNone(prune_payload["ImagesDeleted"][1]["Deleted"])
+
if __name__ == "__main__":
unittest.main()
diff --git a/test/e2e/common_test.go b/test/e2e/common_test.go
index a076ada6b..18679dd53 100644
--- a/test/e2e/common_test.go
+++ b/test/e2e/common_test.go
@@ -378,10 +378,17 @@ func GetRandomIPAddress() string {
// RunTopContainer runs a simple container in the background that
// runs top. If the name passed != "", it will have a name
func (p *PodmanTestIntegration) RunTopContainer(name string) *PodmanSessionIntegration {
+ return p.RunTopContainerWithArgs(name, nil)
+}
+
+// RunTopContainerWithArgs runs a simple container in the background that
+// runs top. If the name passed != "", it will have a name, command args can also be passed in
+func (p *PodmanTestIntegration) RunTopContainerWithArgs(name string, args []string) *PodmanSessionIntegration {
var podmanArgs = []string{"run"}
if name != "" {
podmanArgs = append(podmanArgs, "--name", name)
}
+ podmanArgs = append(podmanArgs, args...)
podmanArgs = append(podmanArgs, "-d", ALPINE, "top")
return p.Podman(podmanArgs)
}
@@ -538,12 +545,7 @@ func (p *PodmanTestIntegration) CreatePodWithLabels(name string, labels map[stri
}
func (p *PodmanTestIntegration) RunTopContainerInPod(name, pod string) *PodmanSessionIntegration {
- var podmanArgs = []string{"run", "--pod", pod}
- if name != "" {
- podmanArgs = append(podmanArgs, "--name", name)
- }
- podmanArgs = append(podmanArgs, "-d", ALPINE, "top")
- return p.Podman(podmanArgs)
+ return p.RunTopContainerWithArgs(name, []string{"--pod", pod})
}
func (p *PodmanTestIntegration) RunHealthCheck(cid string) error {
diff --git a/test/e2e/exec_test.go b/test/e2e/exec_test.go
index 18737105e..b180d881a 100644
--- a/test/e2e/exec_test.go
+++ b/test/e2e/exec_test.go
@@ -120,18 +120,200 @@ var _ = Describe("Podman exec", func() {
})
It("podman exec --privileged", func() {
- hostCap := SystemExec("awk", []string{"/^CapEff/ { print $2 }", "/proc/self/status"})
- Expect(hostCap.ExitCode()).To(Equal(0))
+ session := podmanTest.Podman([]string{"run", "--privileged", "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
+
+ session = podmanTest.Podman([]string{"run", "--privileged", "--rm", ALPINE, "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ effPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainer("test-privileged")
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+
+ })
+
+ It("podman exec --privileged", func() {
+ session := podmanTest.Podman([]string{"run", "--privileged", "--user=bin", "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
+
+ session = podmanTest.Podman([]string{"run", "--privileged", "--user=bin", "--rm", ALPINE, "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ effPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainer("test-privileged")
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+
+ })
+
+ It("podman exec --privileged", func() {
+ session := podmanTest.Podman([]string{"run", "--privileged", "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
setup := podmanTest.RunTopContainer("test-privileged")
setup.WaitWithDefaultTimeout()
Expect(setup.ExitCode()).To(Equal(0))
- session := podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("00000000"))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+ })
- containerCapMatchesHost(session.OutputToString(), hostCap.OutputToString())
+ It("podman exec --privileged container not running as root", func() {
+ session := podmanTest.Podman([]string{"run", "--privileged", "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainerWithArgs("test-privileged", []string{"--user=bin"})
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("00000000"))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("00000000"))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=root", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "--user=bin", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+ })
+
+ It("podman exec with user with cap-add", func() {
+ capAdd := "--cap-add=net_bind_service"
+ session := podmanTest.Podman([]string{"run", "--user=bin", capAdd, "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
+
+ session = podmanTest.Podman([]string{"run", "--user=bin", capAdd, "--rm", ALPINE, "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ effPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainerWithArgs("test-privileged", []string{"--user=bin", capAdd})
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+ })
+
+ It("podman exec with user with and cap-drop cap-add", func() {
+ capAdd := "--cap-add=net_bind_service"
+ capDrop := "--cap-drop=all"
+ session := podmanTest.Podman([]string{"run", "--user=bin", capDrop, capAdd, "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bndPerms := session.OutputToString()
+
+ session = podmanTest.Podman([]string{"run", "--user=bin", capDrop, capAdd, "--rm", ALPINE, "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ effPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainerWithArgs("test-privileged", []string{"--user=bin", capDrop, capAdd})
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bndPerms))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapInh /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapPrm /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+
+ session = podmanTest.Podman([]string{"exec", "test-privileged", "sh", "-c", "grep ^CapAmb /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(effPerms))
+ })
+
+ It("podman exec --privileged with user", func() {
+ session := podmanTest.Podman([]string{"run", "--privileged", "--user=bin", "--rm", ALPINE, "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ bindPerms := session.OutputToString()
+
+ setup := podmanTest.RunTopContainerWithArgs("test-privileged", []string{"--privileged", "--user=bin"})
+ setup.WaitWithDefaultTimeout()
+ Expect(setup.ExitCode()).To(Equal(0))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapBnd /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring(bindPerms))
+
+ session = podmanTest.Podman([]string{"exec", "--privileged", "test-privileged", "sh", "-c", "grep ^CapEff /proc/self/status | cut -f 2"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
})
It("podman exec terminal doesn't hang", func() {
diff --git a/test/e2e/run_test.go b/test/e2e/run_test.go
index 92d7d222e..19060ecdc 100644
--- a/test/e2e/run_test.go
+++ b/test/e2e/run_test.go
@@ -342,6 +342,11 @@ var _ = Describe("Podman run", func() {
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
+ session = podmanTest.Podman([]string{"run", "--rm", "--user", "bin", ALPINE, "grep", "CapInh", "/proc/self/status"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
+
session = podmanTest.Podman([]string{"run", "--rm", "--user", "root", ALPINE, "grep", "CapBnd", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
@@ -352,6 +357,11 @@ var _ = Describe("Podman run", func() {
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("00000000a80425fb"))
+ session = podmanTest.Podman([]string{"run", "--rm", "--user", "root", ALPINE, "grep", "CapInh", "/proc/self/status"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("00000000a80425fb"))
+
session = podmanTest.Podman([]string{"run", "--rm", ALPINE, "grep", "CapBnd", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
@@ -367,10 +377,10 @@ var _ = Describe("Podman run", func() {
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("0000000000000002"))
- session = podmanTest.Podman([]string{"run", "--user=1000:1000", "--rm", ALPINE, "grep", "CapAmb", "/proc/self/status"})
+ session = podmanTest.Podman([]string{"run", "--user=1000:1000", "--cap-add=DAC_OVERRIDE", "--rm", ALPINE, "grep", "CapInh", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
- Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
+ Expect(session.OutputToString()).To(ContainSubstring("0000000000000002"))
session = podmanTest.Podman([]string{"run", "--user=0", "--cap-add=DAC_OVERRIDE", "--rm", ALPINE, "grep", "CapAmb", "/proc/self/status"})
session.WaitWithDefaultTimeout()
@@ -382,6 +392,11 @@ var _ = Describe("Podman run", func() {
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
+ session = podmanTest.Podman([]string{"run", "--user=0:0", "--cap-add=DAC_OVERRIDE", "--rm", ALPINE, "grep", "CapInh", "/proc/self/status"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("00000000a80425fb"))
+
if os.Geteuid() > 0 {
if os.Getenv("SKIP_USERNS") != "" {
Skip("Skip userns tests.")
@@ -393,6 +408,16 @@ var _ = Describe("Podman run", func() {
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("0000000000000002"))
+
+ session = podmanTest.Podman([]string{"run", "--userns=keep-id", "--privileged", "--rm", ALPINE, "grep", "CapInh", "/proc/self/status"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("0000000000000000"))
+
+ session = podmanTest.Podman([]string{"run", "--userns=keep-id", "--cap-add=DAC_OVERRIDE", "--rm", ALPINE, "grep", "CapInh", "/proc/self/status"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+ Expect(session.OutputToString()).To(ContainSubstring("0000000000000002"))
}
})
diff --git a/test/system/400-unprivileged-access.bats b/test/system/400-unprivileged-access.bats
index 20fdd068f..6a89247e6 100644
--- a/test/system/400-unprivileged-access.bats
+++ b/test/system/400-unprivileged-access.bats
@@ -75,7 +75,7 @@ EOF
is "$output" "/var/lib/containers/storage" "GraphRoot in expected place"
GRAPH_ROOT="$output"
run_podman info --format '{{.Store.RunRoot}}'
- is "$output" "/var/run/containers/storage" "RunRoot in expected place"
+ is "$output" ".*/run/containers/storage" "RunRoot in expected place"
RUN_ROOT="$output"
# The main test: find all world-writable files or directories underneath