9929cfbcd5
Use hexadecimal numbers rather than decimal in various vFile packets in order to fix compatibility with gdbserver. This also changes the few custom LLDB packets -- while technically they do not have to be changed, it is easier to use the same syntax consistently across LLDB. Differential Revision: https://reviews.llvm.org/D107475
216 lines
7.5 KiB
Python
216 lines
7.5 KiB
Python
from __future__ import print_function
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# lldb test suite imports
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import TestBase
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# gdb-remote-specific imports
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import lldbgdbserverutils
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from gdbremote_testcase import GdbRemoteTestCaseBase
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import binascii
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import stat
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import tempfile
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class TestGdbRemotePlatformFile(GdbRemoteTestCaseBase):
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mydir = TestBase.compute_mydir(__file__)
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def test_platform_file_rdonly(self):
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self.vFile_test(read=True)
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def test_platform_file_wronly(self):
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self.vFile_test(write=True)
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def test_platform_file_rdwr(self):
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self.vFile_test(read=True, write=True)
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def test_platform_file_wronly_append(self):
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self.vFile_test(write=True, append=True)
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def test_platform_file_rdwr_append(self):
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self.vFile_test(read=True, write=True, append=True)
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def test_platform_file_wronly_trunc(self):
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self.vFile_test(write=True, trunc=True)
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def test_platform_file_rdwr_trunc(self):
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self.vFile_test(read=True, write=True, trunc=True)
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def test_platform_file_wronly_creat(self):
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self.vFile_test(write=True, creat=True)
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def test_platform_file_wronly_creat_excl(self):
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self.vFile_test(write=True, creat=True, excl=True)
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def test_platform_file_wronly_fail(self):
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server = self.connect_to_debug_monitor()
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self.assertIsNotNone(server)
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# create a temporary directory
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with tempfile.TemporaryDirectory() as temp_dir:
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temp_path = os.path.join(temp_dir, "test")
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self.assertFalse(os.path.exists(temp_path))
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# attempt to open the file without O_CREAT
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self.do_handshake()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:open:%s,1,0#00" % (
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binascii.b2a_hex(temp_path.encode()).decode(),),
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{"direction": "send",
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"regex": r"^\$F-1,[0-9a-fA-F]+#[0-9a-fA-F]{2}$"}],
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True)
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self.expect_gdbremote_sequence()
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def test_platform_file_wronly_creat_excl_fail(self):
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server = self.connect_to_debug_monitor()
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self.assertIsNotNone(server)
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with tempfile.NamedTemporaryFile() as temp_file:
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# attempt to open the file with O_CREAT|O_EXCL
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self.do_handshake()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:open:%s,a01,0#00" % (
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binascii.b2a_hex(temp_file.name.encode()).decode(),),
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{"direction": "send",
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"regex": r"^\$F-1,[0-9a-fA-F]+#[0-9a-fA-F]{2}$"}],
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True)
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self.expect_gdbremote_sequence()
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def expect_error(self):
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self.test_sequence.add_log_lines(
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[{"direction": "send",
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"regex": r"^\$F-1,[0-9a-fA-F]+#[0-9a-fA-F]{2}$"}],
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True)
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self.expect_gdbremote_sequence()
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def vFile_test(self, read=False, write=False, append=False, trunc=False,
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creat=False, excl=False):
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if read and write:
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mode = 2
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elif write:
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mode = 1
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else: # read
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mode = 0
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if append:
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mode |= 8
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if creat:
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mode |= 0x200
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if trunc:
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mode |= 0x400
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if excl:
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mode |= 0x800
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server = self.connect_to_debug_monitor()
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self.assertIsNotNone(server)
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# create a temporary file with some data
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test_data = 'some test data longer than 16 bytes\n'
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if creat:
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temp_dir = tempfile.TemporaryDirectory()
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else:
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temp_file = tempfile.NamedTemporaryFile()
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try:
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if creat:
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temp_path = os.path.join(temp_dir.name, "test")
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self.assertFalse(os.path.exists(temp_path))
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else:
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temp_file.write(test_data.encode())
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temp_file.flush()
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temp_path = temp_file.name
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# open the file for reading
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self.do_handshake()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:open:%s,%x,1a0#00" % (
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binascii.b2a_hex(temp_path.encode()).decode(),
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mode),
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{"direction": "send",
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"regex": r"^\$F([0-9a-fA-F]+)#[0-9a-fA-F]{2}$",
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"capture": {1: "fd"}}],
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True)
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context = self.expect_gdbremote_sequence()
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self.assertIsNotNone(context)
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fd = int(context["fd"], 16)
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# read data from the file
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self.reset_test_sequence()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:pread:%x,11,10#00" % (fd,)],
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True)
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if read:
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self.test_sequence.add_log_lines(
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[{"direction": "send",
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"regex": r"^\$F([0-9a-fA-F]+);(.*)#[0-9a-fA-F]{2}$",
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"capture": {1: "size", 2: "data"}}],
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True)
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context = self.expect_gdbremote_sequence()
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self.assertIsNotNone(context)
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if trunc:
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self.assertEqual(context["size"], "0")
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self.assertEqual(context["data"], "")
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else:
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self.assertEqual(context["size"], "11") # hex
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self.assertEqual(context["data"], test_data[0x10:0x10 + 0x11])
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else:
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self.expect_error()
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# another offset
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if read and not trunc:
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self.reset_test_sequence()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:pread:%x,6,3#00" % (fd,),
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{"direction": "send",
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"regex": r"^\$F([0-9a-fA-F]+);(.+)#[0-9a-fA-F]{2}$",
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"capture": {1: "size", 2: "data"}}],
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True)
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context = self.expect_gdbremote_sequence()
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self.assertIsNotNone(context)
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self.assertEqual(context["size"], "6") # hex
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self.assertEqual(context["data"], test_data[3:3 + 6])
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# write data to the file
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self.reset_test_sequence()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:pwrite:%x,6,somedata#00" % (fd,)],
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True)
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if write:
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self.test_sequence.add_log_lines(
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["send packet: $F8#00"],
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True)
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self.expect_gdbremote_sequence()
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else:
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self.expect_error()
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# close the file
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self.reset_test_sequence()
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self.test_sequence.add_log_lines(
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["read packet: $vFile:close:%x#00" % (fd,),
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"send packet: $F0#00"],
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True)
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self.expect_gdbremote_sequence()
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if write:
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# check if the data was actually written
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if creat:
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temp_file = open(temp_path, "rb")
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self.assertEqual(os.fstat(temp_file.fileno()).st_mode & 0o7777,
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0o640)
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temp_file.seek(0)
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data = test_data.encode()
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if trunc or creat:
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data = b"\0" * 6 + b"somedata"
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elif append:
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data += b"somedata"
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else:
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data = data[:6] + b"somedata" + data[6 + 8:]
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self.assertEqual(temp_file.read(), data)
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finally:
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if creat:
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temp_dir.cleanup()
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else:
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temp_file.close()
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