Exemplo n.º 1
0
/**
 * @return The number of leaves or zero if unknown.
 */
size_t
tth_cache_lookup(const struct tth *tth, filesize_t filesize)
{
	size_t expected, leave_count = 0;
	
	g_return_val_if_fail(tth, 0);

	expected = tt_good_node_count(filesize);
	if (expected > 1) {
		filestat_t sb;
		char *pathname;

		pathname = tth_cache_pathname(tth);
		if (stat(pathname, &sb)) {
			leave_count = 0;
			if (ENOENT != errno) {
				g_warning("%s(%s): stat(\"%s\") failed: %m",
					G_STRFUNC, tth_base32(tth), pathname);
			}
		} else {
			leave_count = tth_cache_leave_count(tth, &sb);
		}
		HFREE_NULL(pathname);
	} else {
		leave_count = 1;
	}
	return expected != leave_count ? 0 : leave_count;
}
Exemplo n.º 2
0
static int
tth_cache_file_create(const struct tth *tth)
{
	char *pathname;
	int accmode;
	int fd;

	g_return_val_if_fail(tth, -1);

	accmode = O_WRONLY | O_TRUNC;
	pathname = tth_cache_pathname(tth);

	/*
	 * Critical section required since we could have a concurrent thread
	 * deciding to remove empty directories whilst we are attempting
	 * to create a new directory to store the new cached entry!
	 */

	TTH_PATH_LOCK;

	fd = file_create_missing(pathname, accmode, TTH_FILE_MODE);
	if (fd < 0 && ENOENT == errno) {
		char *dir = filepath_directory(pathname);
		if (0 == create_directory(dir, DEFAULT_DIRECTORY_MODE)) {
			fd = file_create(pathname, accmode, TTH_FILE_MODE);
		}
		HFREE_NULL(dir);
	}

	TTH_PATH_UNLOCK;

	HFREE_NULL(pathname);
	return fd;
}
Exemplo n.º 3
0
void
tth_cache_remove(const struct tth *tth)
{
	char *pathname;

	g_return_if_fail(tth);

	pathname = tth_cache_pathname(tth);
	unlink(pathname);
	HFREE_NULL(pathname);
}
Exemplo n.º 4
0
static bool
tth_cache_file_exists(const struct tth *tth)
{
	bool ret;
	char *pathname;

	g_return_val_if_fail(tth, FALSE);

	pathname = tth_cache_pathname(tth);
	ret = file_exists(pathname);
	HFREE_NULL(pathname);
	return ret;
}
Exemplo n.º 5
0
static int
tth_cache_file_open(const struct tth *tth)
{
	char *pathname;
	int fd;

	g_return_val_if_fail(tth, -1);

	pathname = tth_cache_pathname(tth);
	fd = file_open_missing(pathname, O_RDONLY);
	HFREE_NULL(pathname);
	return fd;
}
Exemplo n.º 6
0
static int
tth_cache_file_create(const struct tth *tth)
{
	char *pathname;
	int accmode;
	int fd;

	g_return_val_if_fail(tth, -1);

	accmode = O_WRONLY | O_TRUNC;
	pathname = tth_cache_pathname(tth);
	fd = file_create_missing(pathname, accmode, TTH_FILE_MODE);
	if (fd < 0 && ENOENT == errno) {
		char *dir = filepath_directory(pathname);
		if (0 == create_directory(dir, DEFAULT_DIRECTORY_MODE)) {
			fd = file_create(pathname, accmode, TTH_FILE_MODE);
		}
		HFREE_NULL(dir);
	}
	HFREE_NULL(pathname);
	return fd;
}