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"""
Test denied process attach.
"""
from __future__ import print_function
import os
import time
import lldb
from lldbsuite.test.lldbtest import *
exe_name = 'AttachDenied' # Must match Makefile
class AttachDeniedTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def run_platform_command(self, cmd):
platform = self.dbg.GetSelectedPlatform()
shell_command = lldb.SBPlatformShellCommand(cmd)
err = platform.Run(shell_command)
return (err, shell_command.GetStatus(), shell_command.GetOutput())
@skipIfWindows
@skipIfiOSSimulator
def test_attach_to_process_by_id_denied(self):
"""Test attach by process id denied"""
self.build()
exe = os.path.join(os.getcwd(), exe_name)
# Use a file as a synchronization point between test and inferior.
pid_file_path = lldbutil.append_to_process_working_directory(
"pid_file_%d" % (int(time.time())))
self.addTearDownHook(lambda: self.run_platform_command("rm %s" % (pid_file_path)))
# Spawn a new process
popen = self.spawnSubprocess(exe, [pid_file_path])
self.addTearDownHook(self.cleanupSubprocesses)
max_attempts = 5
for i in range(max_attempts):
err, retcode, msg = self.run_platform_command("ls %s" % pid_file_path)
if err.Success() and retcode == 0:
break
else:
print(msg)
if i < max_attempts:
# Exponential backoff!
time.sleep(pow(2, i) * 0.25)
else:
self.fail("Child PID file %s not found even after %d attempts." % (pid_file_path, max_attempts))
err, retcode, pid = self.run_platform_command("cat %s" % (pid_file_path))
self.assertTrue(err.Success() and retcode == 0,
"Failed to read file %s: %s, retcode: %d" % (pid_file_path, err.GetCString(), retcode))
self.expect('process attach -p ' + pid,
startstr = 'error: attach failed:',
error = True)
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