Function resolve_symlink

lockfile.c:53–75

* path contains a path that might be a symlink. * * If path is a symlink, attempt to overwrite it with a path to the * real file or directory (which may or may not exist), following a * chain of symlinks if necessary. Otherwise, leave path unmodified. * * This is a best-effort routine. If an error occurs, path will * either be left unmodified or will name a different symlink in a * symli

 * symlink chain that started with the original path.
 */
static void resolve_symlink(struct strbuf *path)
{
	int depth = MAXDEPTH;
	static struct strbuf link = STRBUF_INIT;

	while (depth--) {
		if (strbuf_readlink(&link, path->buf, path->len) < 0)
			break;

		if (is_absolute_path(link.buf))
			/* absolute path simply replaces p */
			strbuf_reset(path);
		else
			/*
			 * link is a relative path, so replace the
			 * last element of p with it.
			 */
			trim_last_path_component(path);

		strbuf_addbuf(path, &link);
	}
	strbuf_reset(&link);
}

/*
 * Lock PID file functions - write PID to a foo~pid.lock file alongside