Function rsync_module

clientserver.c:694–1225

#endif

static int rsync_module(int f_in, int f_out, int i, const char *addr, const char *host)
{
	int argc;
	char **argv, **orig_argv, **orig_early_argv, *module_chdir;
	char line[BIGPATHBUFLEN];
#if defined HAVE_INITGROUPS && !defined HAVE_GETGROUPLIST
	struct passwd *pw = NULL;
#endif
	uid_t uid;
	int set_uid;
	char *p, *err_msg = NULL;
	char *name = lp_name(i);
	int use_chroot = lp_use_chroot(i); /* might be 1 (yes), 0 (no), or -1 (unset) */
	int ret, pre_exec_arg_fd = -1, pre_exec_error_fd = -1;
	int save_munge_symlinks;
	pid_t pre_exec_pid = 0;
	char *request = NULL;

	set_env_str("RSYNC_MODULE_NAME", name);

#ifdef ICONV_OPTION
	iconv_opt = lp_charset(i);
	if (*iconv_opt)
		setup_iconv();
	iconv_opt = NULL;
#endif

	/* If reverse lookup is disabled globally but enabled for this module,
	 * we need to do it now before the access check. */
	if (host == undetermined_hostname && lp_reverse_lookup(i))
		host = client_name(client_addr(f_in));
	set_env_str("RSYNC_HOST_NAME", host);
	set_env_str("RSYNC_HOST_ADDR", addr);

	if (!allow_access(addr, &host, i)) {
		rprintf(FLOG, "rsync denied on module %s from %s (%s)\n",
			name, host, addr);
		if (!lp_list(i))
			io_printf(f_out, "@ERROR: Unknown module '%s'\n", name);
		else {
			io_printf(f_out,
				  "@ERROR: access denied to %s from %s (%s)\n",
				  name, host, addr);
		}
		return -1;
	}

	if (am_daemon > 0) {
		rprintf(FLOG, "rsync allowed access on module %s from %s (%s)\n",
			name, host, addr);
	}

	if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) {
		if (errno) {
			rsyserr(FLOG, errno, "failed to open lock file %s",
				lp_lock_file(i));
			io_printf(f_out, "@ERROR: failed to open lock file\n");
		} else {