#ifdef _WIN32
#define RM_RETRY_COUNT 5
#define RM_RETRY_DELAY 10
#ifdef __MINGW32__
/* These security-enhanced functions are not available
* in MinGW, so just use the vanilla ones */
#define wcscpy_s(a, b, c) wcscpy((a), (c))
#define wcscat_s(a, b, c) wcscat((a), (c))
#endif /* __MINGW32__ */
static int
fs__dotordotdot(WCHAR *_tocheck)
{
return _tocheck[0] == '.' &&
(_tocheck[1] == '\0' ||
(_tocheck[1] == '.' && _tocheck[2] == '\0'));
}
static int
fs_rmdir_rmdir(WCHAR *_wpath)
{
unsigned retries = 1;
while (!RemoveDirectoryW(_wpath)) {
/* Only retry when we have retries remaining, and the
* error was ERROR_DIR_NOT_EMPTY. */
if (retries++ > RM_RETRY_COUNT ||
ERROR_DIR_NOT_EMPTY != GetLastError())
return -1;
/* Give whatever has a handle to a child item some time
* to release it before trying again */
Sleep(RM_RETRY_DELAY * retries * retries);
}
return 0;
}
static void
fs_rmdir_helper(WCHAR *_wsource)
{
WCHAR buffer[MAX_PATH];
HANDLE find_handle;
WIN32_FIND_DATAW find_data;
size_t buffer_prefix_len;
/* Set up the buffer and capture the length */
wcscpy_s(buffer, MAX_PATH, _wsource);
wcscat_s(buffer, MAX_PATH, L"\\");
buffer_prefix_len = wcslen(buffer);
/* FindFirstFile needs a wildcard to match multiple items */
wcscat_s(buffer, MAX_PATH, L"*");
find_handle = FindFirstFileW(buffer, &find_data);
cl_assert(INVALID_HANDLE_VALUE != find_handle);
do {
/* FindFirstFile/FindNextFile gives back . and ..
* entries at the beginning */
if (fs__dotordotdot(find_data.cFileName))
continue;
wcscpy_s(buffer + buffer_prefix_len, MAX_PATH - buffer_prefix_len, find_data.cFileName);
if (FILE_ATTRIBUTE_DIRECTORY & find_data.dwFileAttributes)
fs_rmdir_helper(buffer);
else {
/* If set, the +R bit must be cleared before deleting */
if (FILE_ATTRIBUTE_READONLY & find_data.dwFileAttributes)
cl_assert(SetFileAttributesW(buffer, find_data.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY));
cl_assert(DeleteFileW(buffer));
}
}
while (FindNextFileW(find_handle, &find_data));
/* Ensure that we successfully completed the enumeration */
cl_assert(ERROR_NO_MORE_FILES == GetLastError());
/* Close the find handle */
FindClose(find_handle);
/* Now that the directory is empty, remove it */
cl_assert(0 == fs_rmdir_rmdir(_wsource));
}
static int
fs_rm_wait(WCHAR *_wpath)
{
unsigned retries = 1;
DWORD last_error;
do {
if (INVALID_FILE_ATTRIBUTES == GetFileAttributesW(_wpath))
last_error = GetLastError();
else
last_error = ERROR_SUCCESS;
/* Is the item gone? */
if (ERROR_FILE_NOT_FOUND == last_error ||
ERROR_PATH_NOT_FOUND == last_error)
return 0;
Sleep(RM_RETRY_DELAY * retries * retries);
}
while (retries++ <= RM_RETRY_COUNT);
return -1;
}
static void
fs_rm(const char *_source)
{
WCHAR wsource[MAX_PATH];
DWORD attrs;
/* The input path is UTF-8. Convert it to wide characters
* for use with the Windows API */
cl_assert(MultiByteToWideChar(CP_UTF8,
MB_ERR_INVALID_CHARS,
_source,
-1, /* Indicates NULL termination */
wsource,
MAX_PATH));
/* Does the item exist? If not, we have no work to do */
attrs = GetFileAttributesW(wsource);
if (INVALID_FILE_ATTRIBUTES == attrs)
return;
if (FILE_ATTRIBUTE_DIRECTORY & attrs)
fs_rmdir_helper(wsource);
else {
/* The item is a file. Strip the +R bit */
if (FILE_ATTRIBUTE_READONLY & attrs)
cl_assert(SetFileAttributesW(wsource, attrs & ~FILE_ATTRIBUTE_READONLY));
cl_assert(DeleteFileW(wsource));
}
/* Wait for the DeleteFile or RemoveDirectory call to complete */
cl_assert(0 == fs_rm_wait(wsource));
}
static void
fs_copydir_helper(WCHAR *_wsource, WCHAR *_wdest)
{
WCHAR buf_source[MAX_PATH], buf_dest[MAX_PATH];
HANDLE find_handle;
WIN32_FIND_DATAW find_data;
size_t buf_source_prefix_len, buf_dest_prefix_len;
wcscpy_s(buf_source, MAX_PATH, _wsource);
wcscat_s(buf_source, MAX_PATH, L"\\");
buf_source_prefix_len = wcslen(buf_source);
wcscpy_s(buf_dest, MAX_PATH, _wdest);
wcscat_s(buf_dest, MAX_PATH, L"\\");
buf_dest_prefix_len = wcslen(buf_dest);
/* Get an enumerator for the items in the source. */
wcscat_s(buf_source, MAX_PATH, L"*");
find_handle = FindFirstFileW(buf_source, &find_data);
cl_assert(INVALID_HANDLE_VALUE != find_handle);
/* Create the target directory. */
cl_assert(CreateDirectoryW(_wdest, NULL));
do {
/* FindFirstFile/FindNextFile gives back . and ..
* entries at the beginning */
if (fs__dotordotdot(find_data.cFileName))
continue;
wcscpy_s(buf_source + buf_source_prefix_len, MAX_PATH - buf_source_prefix_len, find_data.cFileName);
wcscpy_s(buf_dest + buf_dest_prefix_len, MAX_PATH - buf_dest_prefix_len, find_data.cFileName);
if (FILE_ATTRIBUTE_DIRECTORY & find_data.dwFileAttributes)
fs_copydir_helper(buf_source, buf_dest);
else
cl_assert(CopyFileW(buf_source, buf_dest, TRUE));
}
while (FindNextFileW(find_handle, &find_data));
/* Ensure that we successfully completed the enumeration */
cl_assert(ERROR_NO_MORE_FILES == GetLastError());
/* Close the find handle */
FindClose(find_handle);
}
static void
fs_copy(const char *_source, const char *_dest)
{
WCHAR wsource[MAX_PATH], wdest[MAX_PATH];
DWORD source_attrs, dest_attrs;
HANDLE find_handle;
WIN32_FIND_DATAW find_data;
/* The input paths are UTF-8. Convert them to wide characters
* for use with the Windows API. */
cl_assert(MultiByteToWideChar(CP_UTF8,
MB_ERR_INVALID_CHARS,
_source,
-1,
wsource,
MAX_PATH));
cl_assert(MultiByteToWideChar(CP_UTF8,
MB_ERR_INVALID_CHARS,
_dest,
-1,
wdest,
MAX_PATH));
/* Check the source for existence */
source_attrs = GetFileAttributesW(wsource);
cl_assert(INVALID_FILE_ATTRIBUTES != source_attrs);
/* Check the target for existence */
dest_attrs = GetFileAttributesW(wdest);
if (INVALID_FILE_ATTRIBUTES != dest_attrs) {
/* Target exists; append last path part of source to target.
* Use FindFirstFile to parse the path */
find_handle = FindFirstFileW(wsource, &find_data);
cl_assert(INVALID_HANDLE_VALUE != find_handle);
wcscat_s(wdest, MAX_PATH, L"\\");
wcscat_s(wdest, MAX_PATH, find_data.cFileName);
FindClose(find_handle);
/* Check the new target for existence */
cl_assert(INVALID_FILE_ATTRIBUTES == GetFileAttributesW(wdest));
}
if (FILE_ATTRIBUTE_DIRECTORY & source_attrs)
fs_copydir_helper(wsource, wdest);
else
cl_assert(CopyFileW(wsource, wdest, TRUE));
}
void
cl_fs_cleanup(void)
{
fs_rm(fixture_path(_clar_path, "*"));
}
#else
#include <errno.h>
#include <string.h>
static int
shell_out(char * const argv[])
{
int status, piderr;
pid_t pid;
pid = fork();
if (pid < 0) {
fprintf(stderr,
"System error: `fork()` call failed (%d) - %s\n",
errno, strerror(errno));
exit(-1);
}
if (pid == 0) {
execv(argv[0], argv);
}
do {
piderr = waitpid(pid, &status, WUNTRACED);
} while (piderr < 0 && (errno == EAGAIN || errno == EINTR));
return WEXITSTATUS(status);
}
static void
fs_copy(const char *_source, const char *dest)
{
char *argv[5];
char *source;
size_t source_len;
source = strdup(_source);
source_len = strlen(source);
if (source[source_len - 1] == '/')
source[source_len - 1] = 0;
argv[0] = "/bin/cp";
argv[1] = "-R";
argv[2] = source;
argv[3] = (char *)dest;
argv[4] = NULL;
cl_must_pass_(
shell_out(argv),
"Failed to copy test fixtures to sandbox"
);
free(source);
}
static void
fs_rm(const char *source)
{
char *argv[4];
argv[0] = "/bin/rm";
argv[1] = "-Rf";
argv[2] = (char *)source;
argv[3] = NULL;
cl_must_pass_(
shell_out(argv),
"Failed to cleanup the sandbox"
);
}
void
cl_fs_cleanup(void)
{
clar_unsandbox();
clar_sandbox();
}
#endif
