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msvcrt/tests: Show that spawn does not require locking of fds. 

Signed-off-by: Thomas Faber <thomas.faber@reactos.org>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Thomas Faber 2021-11-11 17:42:58 -05:00 committed by Alexandre Julliard
parent 5a514d3f45
commit be0684dad5
1 changed files with 43 additions and 2 deletions
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45
dlls/msvcrt/tests/file.c
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@ -1565,6 +1565,18 @@ static void test_stdout_handle( STARTUPINFOA *startup, char *cmdline, HANDLE hst
DeleteFileA( "fdopen.err" );
}
static unsigned WINAPI read_pipe_thread(void *argument)
{
unsigned char buffer[2];
int ret;
int *pipefds = argument;
ret = _read(pipefds[0], buffer, sizeof(buffer));
ok(ret == 1, "ret = %d\n", ret);
ok(buffer[0] == 'a', "%x\n", buffer[0]);
return 0;
}
static void test_file_inherit( const char* selfname )
{
int fd;
@ -1574,6 +1586,9 @@ static void test_file_inherit( const char* selfname )
STARTUPINFOA startup;
SECURITY_ATTRIBUTES sa;
HANDLE handles[3];
HANDLE thread_handle;
int pipefds[2];
intptr_t ret;
fd = open ("fdopen.tst", O_CREAT | O_RDWR | O_BINARY, _S_IREAD |_S_IWRITE);
ok(fd != -1, "Couldn't create test file\n");
@ -1582,7 +1597,8 @@ static void test_file_inherit( const char* selfname )
arg_v[2] = "inherit";
arg_v[3] = buffer; sprintf(buffer, "%d", fd);
arg_v[4] = 0;
_spawnvp(_P_WAIT, selfname, arg_v);
ret = _spawnvp(_P_WAIT, selfname, arg_v);
ok(ret == 0, "_spawnvp returned %d, errno %d\n", ret, errno);
ok(tell(fd) == 8, "bad position %lu expecting 8\n", tell(fd));
lseek(fd, 0, SEEK_SET);
ok(read(fd, buffer, sizeof (buffer)) == 8 && memcmp(buffer, "Success", 8) == 0, "Couldn't read back the data\n");
@ -1595,12 +1611,37 @@ static void test_file_inherit( const char* selfname )
arg_v[2] = "inherit_no";
arg_v[3] = buffer; sprintf(buffer, "%d", fd);
arg_v[4] = 0;
_spawnvp(_P_WAIT, selfname, arg_v);
ret = _spawnvp(_P_WAIT, selfname, arg_v);
ok(ret == 0, "_spawnvp returned %d, errno %d\n", ret, errno);
ok(tell(fd) == 0, "bad position %lu expecting 0\n", tell(fd));
ok(read(fd, buffer, sizeof (buffer)) == 0, "Found unexpected data (%s)\n", buffer);
close (fd);
ok(unlink("fdopen.tst") == 0, "Couldn't unlink\n");
/* Show that spawn works while a read is active */
ok(_pipe(pipefds, 1, O_BINARY) == 0, "_pipe() failed\n");
thread_handle = (HANDLE)_beginthreadex(NULL, 0, read_pipe_thread, pipefds, 0, NULL);
Sleep(100); /* try to make sure the thread is reading */
fd = open ("fdopen.tst", O_CREAT | O_RDWR | O_BINARY, _S_IREAD |_S_IWRITE);
ok(fd != -1, "Couldn't create test file\n");
arg_v[1] = "tests/file.c";
arg_v[2] = "inherit";
arg_v[3] = buffer; sprintf(buffer, "%d", fd);
arg_v[4] = 0;
ret = _spawnvp(_P_WAIT, selfname, arg_v);
ok(ret == 0, "_spawnvp returned %Id, errno %d\n", ret, errno);
ret = tell(fd);
ok(ret == 8, "bad position %Iu expecting 8\n", ret);
lseek(fd, 0, SEEK_SET);
ok(read(fd, buffer, sizeof (buffer)) == 8 && memcmp(buffer, "Success", 8) == 0, "Couldn't read back the data\n");
close (fd);
ok(unlink("fdopen.tst") == 0, "Couldn't unlink\n");
_write(pipefds[1], "a", 1);
WaitForSingleObject(thread_handle, INFINITE);
CloseHandle(thread_handle);
close(pipefds[0]);
close(pipefds[1]);
/* make file handle inheritable */
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;