C++ DLIST_ADD函数代码示例

static bool hbin_prs_key( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk )
{
  int depth = 0;
  REGF_HBIN *sub_hbin;
  
  depth++;

  /* get the initial nk record */
  if (!prs_nk_rec("nk_rec", &hbin->ps, depth, nk))
    return false;

  /* fill in values */
  if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) 
  {
    sub_hbin = hbin;
    if ( !hbin_contains_offset( hbin, nk->values_off ) ) 
    {
      sub_hbin = lookup_hbin_block( file, nk->values_off );
      if ( !sub_hbin ) 
      {
	/*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n", 
	  nk->values_off));*/
	return false;
      }
    }
		
    if(!hbin_prs_vk_records("vk_rec", sub_hbin, depth, nk, file))
      return false;
  }
		
  /* now get subkeys */
  if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) 
  {
    sub_hbin = hbin;
    if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) 
    {
      sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
      if ( !sub_hbin ) 
      {
	/*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n", 
	  nk->subkeys_off));*/
	return false;
      }
    }
		
    if (!hbin_prs_lf_records("lf_rec", sub_hbin, depth, nk))
      return false;
  }

  /* get the to the security descriptor.  First look if we have already parsed it */
	
  if ((nk->sk_off!=REGF_OFFSET_NONE) 
      && !(nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )))
  {
    sub_hbin = hbin;
    if (!hbin_contains_offset(hbin, nk->sk_off))
    {
      sub_hbin = lookup_hbin_block( file, nk->sk_off );
      if ( !sub_hbin ) {
	/*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n", 
	  nk->subkeys_off));*/
	return false;
      }
    }
		
    if ( !(nk->sec_desc = (REGF_SK_REC*)zalloc(sizeof(REGF_SK_REC) )) )
      return false;
    nk->sec_desc->sk_off = nk->sk_off;
    if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
      return false;
			
    /* add to the list of security descriptors (ref_count has been read from the files) */

    nk->sec_desc->sk_off = nk->sk_off;
    /* XXX: this kind of caching needs to be re-evaluated */
    DLIST_ADD( file->sec_desc_list, nk->sec_desc );
  }
		
  return true;
}

//.........这里部分代码省略.........
						*pp_workgroup,
						*pp_password,
						flags,
						signing_state);
                if (! NT_STATUS_IS_OK(nt_status)) {
                        DEBUG(1,("cli_full_connection failed! (%s)\n",
                                 nt_errstr(nt_status)));
                        errno = ENOTSUP;
                        return NULL;
                }

		if (context->internal->smb_encryption_level) {
			/* Attempt encryption. */
			nt_status = cli_cm_force_encryption(ipc_cli,
							    *pp_username,
							    *pp_password,
							    *pp_workgroup,
							    "IPC$");
			if (!NT_STATUS_IS_OK(nt_status)) {

				/*
				 * context->smb_encryption_level ==
				 * 1 means don't fail if encryption can't be
				 * negotiated, == 2 means fail if encryption
				 * can't be negotiated.
				 */

				DEBUG(4,(" SMB encrypt failed on IPC$\n"));

				if (context->internal->smb_encryption_level == 2) {
		                        cli_shutdown(ipc_cli);
					errno = EPERM;
					return NULL;
				}
			}
			DEBUG(4,(" SMB encrypt ok on IPC$\n"));
		}

                ipc_srv = SMB_MALLOC_P(SMBCSRV);
                if (!ipc_srv) {
                        errno = ENOMEM;
                        cli_shutdown(ipc_cli);
                        return NULL;
                }

                ZERO_STRUCTP(ipc_srv);
                DLIST_ADD(ipc_srv->cli, ipc_cli);

                nt_status = cli_rpc_pipe_open_noauth(
			ipc_srv->cli, &ndr_table_lsarpc, &pipe_hnd);
                if (!NT_STATUS_IS_OK(nt_status)) {
                        DEBUG(1, ("cli_nt_session_open fail!\n"));
                        errno = ENOTSUP;
                        cli_shutdown(ipc_srv->cli);
                        free(ipc_srv);
                        return NULL;
                }

                /*
                 * Some systems don't support
                 * SEC_FLAG_MAXIMUM_ALLOWED, but NT sends 0x2000000
                 * so we might as well do it too.
                 */

                nt_status = rpccli_lsa_open_policy(
                        pipe_hnd,
                        talloc_tos(),
                        True,
                        GENERIC_EXECUTE_ACCESS,
                        &ipc_srv->pol);

                if (!NT_STATUS_IS_OK(nt_status)) {
                        errno = SMBC_errno(context, ipc_srv->cli);
                        cli_shutdown(ipc_srv->cli);
                        free(ipc_srv);
                        return NULL;
                }

                /* now add it to the cache (internal or external) */

                errno = 0;      /* let cache function set errno if it likes */
                if (smbc_getFunctionAddCachedServer(context)(context, ipc_srv,
                                                             server,
                                                             "*IPC$",
                                                             *pp_workgroup,
                                                             *pp_username)) {
                        DEBUG(3, (" Failed to add server to cache\n"));
                        if (errno == 0) {
                                errno = ENOMEM;
                        }
                        cli_shutdown(ipc_srv->cli);
                        free(ipc_srv);
                        return NULL;
                }

                DLIST_ADD(context->internal->servers, ipc_srv);
        }

        return ipc_srv;
}

struct tdb_print_db *get_print_db_byname(const char *printername)
{
	struct tdb_print_db *p = NULL, *last_entry = NULL;
	size_t num_open = 0;
	char *printdb_path = NULL;
	bool done_become_root = False;
	char *print_cache_path;
	int ret;

	SMB_ASSERT(printername != NULL);

	for (p = print_db_head, last_entry = print_db_head; p; p = p->next) {
		/* Ensure the list terminates... JRA. */
		SMB_ASSERT(p->next != print_db_head);

		if (p->tdb && strequal(p->printer_name, printername)) {
			DLIST_PROMOTE(print_db_head, p);
			p->ref_count++;
			return p;
		}
		num_open++;
		last_entry = p;
	}

	/* Not found. */
	if (num_open >= MAX_PRINT_DBS_OPEN) {
		/* Try and recycle the last entry. */
		if (print_db_head && last_entry) {
			DLIST_PROMOTE(print_db_head, last_entry);
		}

		for (p = print_db_head; p; p = p->next) {
			if (p->ref_count)
				continue;
			if (p->tdb) {
				if (tdb_close(p->tdb)) {
					DEBUG(0,("get_print_db: Failed to close tdb for printer %s\n",
								p->printer_name ));
					return NULL;
				}
			}
			p->tdb = NULL;
			p->ref_count = 0;
			memset(p->printer_name, '\0', sizeof(p->printer_name));
			break;
		}
		if (p && print_db_head) {
			DLIST_PROMOTE(print_db_head, p);
			p = print_db_head;
		}
	}

	if (!p)	{
		/* Create one. */
		p = SMB_MALLOC_P(struct tdb_print_db);
		if (!p) {
			DEBUG(0,("get_print_db: malloc fail !\n"));
			return NULL;
		}
		ZERO_STRUCTP(p);
		DLIST_ADD(print_db_head, p);
	}

static void add_subnet(struct subnet_record *subrec)
{
	DLIST_ADD(subnetlist, subrec);
}

BOOL cli_list_user_quota(struct cli_state *cli, int quota_fnum, SMB_NTQUOTA_LIST **pqt_list)
{
	BOOL ret = False;
	uint16 setup;
	char params[16];
	char *rparam=NULL, *rdata=NULL;
	unsigned int rparam_count=0, rdata_count=0;
	unsigned int offset;
	const char *curdata = NULL;
	unsigned int curdata_count = 0;
	TALLOC_CTX *mem_ctx = NULL;
	SMB_NTQUOTA_STRUCT qt;
	SMB_NTQUOTA_LIST *tmp_list_ent;

	if (!cli||!pqt_list)
		smb_panic("cli_list_user_quota() called with NULL Pointer!");

	setup = NT_TRANSACT_GET_USER_QUOTA;

	SSVAL(params, 0,quota_fnum);
	SSVAL(params, 2,TRANSACT_GET_USER_QUOTA_LIST_START);
	SIVAL(params, 4,0x00000000);
	SIVAL(params, 8,0x00000000);
	SIVAL(params,12,0x00000000);
	
	if (!cli_send_nt_trans(cli, 
			       NT_TRANSACT_GET_USER_QUOTA, 
			       0, 
			       &setup, 1, 0,
			       params, 16, 4,
			       NULL, 0, 2048)) {
		DEBUG(1,("Failed to send NT_TRANSACT_GET_USER_QUOTA\n"));
		goto cleanup;
	}


	if (!cli_receive_nt_trans(cli,
				  &rparam, &rparam_count,
				  &rdata, &rdata_count)) {
		DEBUG(1,("Failed to recv NT_TRANSACT_GET_USER_QUOTA\n"));
		goto cleanup;
	}

	if (cli_is_error(cli)) {
		ret = False;
		goto cleanup;
	} else {
		ret = True;
	}

	if (rdata_count == 0) {
		*pqt_list = NULL;
		return True;
	}

	if ((mem_ctx=talloc_init("SMB_USER_QUOTA_LIST"))==NULL) {
		DEBUG(0,("talloc_init() failed\n"));
		return (-1);
	}

	offset = 1;
	for (curdata=rdata,curdata_count=rdata_count;
		((curdata)&&(curdata_count>=8)&&(offset>0));
		curdata +=offset,curdata_count -= offset) {
		ZERO_STRUCT(qt);
		if (!parse_user_quota_record(curdata, curdata_count, &offset, &qt)) {
			DEBUG(1,("Failed to parse the quota record\n"));
			goto cleanup;
		}

		if ((tmp_list_ent=TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_LIST))==NULL) {
			DEBUG(0,("talloc_zero() failed\n"));
			return (-1);
		}

		if ((tmp_list_ent->quotas=TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_STRUCT))==NULL) {
			DEBUG(0,("talloc_zero() failed\n"));
			return (-1);
		}

		memcpy(tmp_list_ent->quotas,&qt,sizeof(qt));
		tmp_list_ent->mem_ctx = mem_ctx;		

		DLIST_ADD((*pqt_list),tmp_list_ent);
	}

	SSVAL(params, 2,TRANSACT_GET_USER_QUOTA_LIST_CONTINUE);	
	while(1) {
		if (!cli_send_nt_trans(cli, 
				       NT_TRANSACT_GET_USER_QUOTA, 
				       0, 
				       &setup, 1, 0,
				       params, 16, 4,
				       NULL, 0, 2048)) {
			DEBUG(1,("Failed to send NT_TRANSACT_GET_USER_QUOTA\n"));
			goto cleanup;
		}
		
		SAFE_FREE(rparam);
		SAFE_FREE(rdata);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		cli_shutdown(&c);
		if (strcmp(called.name, "*SMBSERVER")) {
			make_nmb_name(&called , "*SMBSERVER", 0x20);
			goto again;
		}
		errno = ENOENT;
		return NULL;
	}

	DEBUG(4,(" session request ok\n"));

	if (!cli_negprot(&c)) {
		cli_shutdown(&c);
		errno = ENOENT;
		return NULL;
	}

	if (!cli_session_setup(&c, username, 
			       password, strlen(password),
			       password, strlen(password),
			       workgroup) &&
	    /* try an anonymous login if it failed */
	    !cli_session_setup(&c, "", "", 1,"", 0, workgroup)) {
		cli_shutdown(&c);
		errno = EPERM;
		return NULL;
	}

	DEBUG(4,(" session setup ok\n"));

	if (!cli_send_tconX(&c, share, "?????",
			    password, strlen(password)+1)) {
		errno = smbw_errno(&c);
		cli_shutdown(&c);
		return NULL;
	}

	smbw_setshared(ipenv,inet_ntoa(ip));
	
	DEBUG(4,(" tconx ok\n"));

	srv = (struct smbw_server *)malloc(sizeof(*srv));
	if (!srv) {
		errno = ENOMEM;
		goto failed;
	}

	ZERO_STRUCTP(srv);

	srv->cli = c;

	srv->dev = (dev_t)(str_checksum(server) ^ str_checksum(share));

	srv->server_name = strdup(server);
	if (!srv->server_name) {
		errno = ENOMEM;
		goto failed;
	}

	srv->share_name = strdup(share);
	if (!srv->share_name) {
		errno = ENOMEM;
		goto failed;
	}

	srv->workgroup = strdup(workgroup);
	if (!srv->workgroup) {
		errno = ENOMEM;
		goto failed;
	}

	srv->username = strdup(username);
	if (!srv->username) {
		errno = ENOMEM;
		goto failed;
	}

	/* some programs play with file descriptors fairly intimately. We
	   try to get out of the way by duping to a high fd number */
	if (fcntl(SMBW_CLI_FD + srv->cli.fd, F_GETFD) && errno == EBADF) {
		if (dup2(srv->cli.fd,SMBW_CLI_FD+srv->cli.fd) == 
		    srv->cli.fd+SMBW_CLI_FD) {
			close(srv->cli.fd);
			srv->cli.fd += SMBW_CLI_FD;
		}
	}

	DLIST_ADD(smbw_srvs, srv);

	return srv;

 failed:
	cli_shutdown(&c);
	if (!srv) return NULL;

	SAFE_FREE(srv->server_name);
	SAFE_FREE(srv->share_name);
	SAFE_FREE(srv);
	return NULL;
}

//.........这里部分代码省略.........
	/* Hmmm, the test for a directory is suspect here ... FIXME */

	if (strlen(path) > 0 && path[strlen(path) - 1] == '\\') {
		status = NT_STATUS_OBJECT_PATH_INVALID;
	} else {
		file = SMB_MALLOC_P(SMBCFILE);
		if (!file) {
			errno = ENOMEM;
			TALLOC_FREE(frame);
			return NULL;
		}

		ZERO_STRUCTP(file);

		/*d_printf(">>>open: resolving %s\n", path);*/
		status = cli_resolve_path(
			frame, "", context->internal->auth_info,
			srv->cli, path, &targetcli, &targetpath);
		if (!NT_STATUS_IS_OK(status)) {
			d_printf("Could not resolve %s\n", path);
                        errno = ENOENT;
			SAFE_FREE(file);
			TALLOC_FREE(frame);
			return NULL;
		}
		/*d_printf(">>>open: resolved %s as %s\n", path, targetpath);*/

		status = cli_open(targetcli, targetpath, flags,
                                   context->internal->share_mode, &fd);
		if (!NT_STATUS_IS_OK(status)) {

			/* Handle the error ... */

			SAFE_FREE(file);
			errno = SMBC_errno(context, targetcli);
			TALLOC_FREE(frame);
			return NULL;
		}

		/* Fill in file struct */

		file->cli_fd  = fd;
		file->fname   = SMB_STRDUP(fname);
		file->srv     = srv;
		file->offset  = 0;
		file->file    = True;

		DLIST_ADD(context->internal->files, file);

                /*
                 * If the file was opened in O_APPEND mode, all write
                 * operations should be appended to the file.  To do that,
                 * though, using this protocol, would require a getattrE()
                 * call for each and every write, to determine where the end
                 * of the file is. (There does not appear to be an append flag
                 * in the protocol.)  Rather than add all of that overhead of
                 * retrieving the current end-of-file offset prior to each
                 * write operation, we'll assume that most append operations
                 * will continuously write, so we'll just set the offset to
                 * the end of the file now and hope that's adequate.
                 *
                 * Note to self: If this proves inadequate, and O_APPEND
                 * should, in some cases, be forced for each write, add a
                 * field in the context options structure, for
                 * "strict_append_mode" which would select between the current
                 * behavior (if FALSE) or issuing a getattrE() prior to each
                 * write and forcing the write to the end of the file (if
                 * TRUE).  Adding that capability will likely require adding
                 * an "append" flag into the _SMBCFILE structure to track
                 * whether a file was opened in O_APPEND mode.  -- djl
                 */
                if (flags & O_APPEND) {
                        if (SMBC_lseek_ctx(context, file, 0, SEEK_END) < 0) {
                                (void) SMBC_close_ctx(context, file);
                                errno = ENXIO;
				TALLOC_FREE(frame);
                                return NULL;
                        }
                }

		TALLOC_FREE(frame);
		return file;
	}

	/* Check if opendir needed ... */

	if (!NT_STATUS_IS_OK(status)) {
		int eno = 0;

		eno = SMBC_errno(context, srv->cli);
		file = smbc_getFunctionOpendir(context)(context, fname);
		if (!file) errno = eno;
		TALLOC_FREE(frame);
		return file;
	}

	errno = EINVAL; /* FIXME, correct errno ? */
	TALLOC_FREE(frame);
	return NULL;
}

//.........这里部分代码省略.........
	entry = talloc(NULL, struct WINBINDD_CCACHE_ENTRY);
	if (!entry) {
		return NT_STATUS_NO_MEMORY;
	}

	ZERO_STRUCTP(entry);

	if (username) {
		entry->username = talloc_strdup(entry, username);
		if (!entry->username) {
			goto no_mem;
		}
	}
	if (princ_name) {
		entry->principal_name = talloc_strdup(entry, princ_name);
		if (!entry->principal_name) {
			goto no_mem;
		}
	}
	if (service) {
		entry->service = talloc_strdup(entry, service);
		if (!entry->service) {
			goto no_mem;
		}
	}

	entry->ccname = talloc_strdup(entry, ccname);
	if (!entry->ccname) {
		goto no_mem;
	}

	entry->realm = talloc_strdup(entry, realm);
	if (!entry->realm) {
		goto no_mem;
	}

	entry->create_time = create_time;
	entry->renew_until = renew_until;
	entry->uid = uid;
	entry->ref_count = 1;

	if (!lp_winbind_refresh_tickets() || renew_until <= 0) {
		goto add_entry;
	}

	if (postponed_request) {
		t = timeval_current_ofs(MAX(30, lp_winbind_cache_time()), 0);
		add_krb5_ticket_gain_handler_event(entry, t);
	} else {
		/* Renew at 1/2 the ticket expiration time */
#if defined(DEBUG_KRB5_TKT_RENEWAL)
		t = timeval_set(time(NULL)+30, 0);
#else
		t = timeval_set(krb5_event_refresh_time(ticket_end), 0);
#endif
		if (entry->refresh_time == 0) {
			entry->refresh_time = t.tv_sec;
		}
		entry->event = tevent_add_timer(winbind_event_context(),
					       entry,
					       t,
					       krb5_ticket_refresh_handler,
					       entry);
	}

	if (!entry->event) {
		goto no_mem;
	}

	DEBUG(10,("add_ccache_to_list: added krb5_ticket handler\n"));

 add_entry:

	DLIST_ADD(ccache_list, entry);

	DEBUG(10,("add_ccache_to_list: "
		"added ccache [%s] for user [%s] to the list\n",
		ccname, username));

	if (entry->event) {
		/*
		 * If we're set up to renew our krb5 tickets, we must
		 * cache the credentials in memory for the ticket
		 * renew function. Fix inspired by patch from
		 * Ian Gordon <[email protected]> for
		 * bugid #9098.
		 */

		ntret = winbindd_add_memory_creds(username, uid, pass);
		DEBUG(10, ("winbindd_add_memory_creds returned: %s\n",
			nt_errstr(ntret)));
	}

	return NT_STATUS_OK;

 no_mem:

	TALLOC_FREE(entry);
	return NT_STATUS_NO_MEMORY;
}

static NTSTATUS winbindd_add_memory_creds_internal(const char *username,
						   uid_t uid,
						   const char *pass)
{
	/* Shortcut to ensure we don't store if no mlock. */
#if !defined(HAVE_MLOCK) || !defined(HAVE_MUNLOCK)
	return NT_STATUS_OK;
#else
	NTSTATUS status;
	struct WINBINDD_MEMORY_CREDS *memcredp = NULL;

	memcredp = find_memory_creds_by_name(username);
	if (uid == (uid_t)-1) {
		DEBUG(0,("winbindd_add_memory_creds_internal: "
			"invalid uid for user %s.\n", username));
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (memcredp) {
		/* Already exists. Increment the reference count and replace stored creds. */
		if (uid != memcredp->uid) {
			DEBUG(0,("winbindd_add_memory_creds_internal: "
				"uid %u for user %s doesn't "
				"match stored uid %u. Replacing.\n",
				(unsigned int)uid, username,
				(unsigned int)memcredp->uid));
			memcredp->uid = uid;
		}
		memcredp->ref_count++;
		DEBUG(10,("winbindd_add_memory_creds_internal: "
			"ref count for user %s is now %d\n",
			username, memcredp->ref_count));
		return winbindd_replace_memory_creds_internal(memcredp, pass);
	}

	memcredp = talloc_zero(NULL, struct WINBINDD_MEMORY_CREDS);
	if (!memcredp) {
		return NT_STATUS_NO_MEMORY;
	}
	memcredp->username = talloc_strdup(memcredp, username);
	if (!memcredp->username) {
		talloc_destroy(memcredp);
		return NT_STATUS_NO_MEMORY;
	}

	status = store_memory_creds(memcredp, pass);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_destroy(memcredp);
		return status;
	}

	memcredp->uid = uid;
	memcredp->ref_count = 1;
	DLIST_ADD(memory_creds_list, memcredp);

	DEBUG(10,("winbindd_add_memory_creds_internal: "
		"added entry for user %s\n", username));

	return NT_STATUS_OK;
#endif
}

pipes_struct *open_rpc_pipe_p(char *pipe_name, 
			      connection_struct *conn, uint16 vuid)
{
	int i;
	pipes_struct *p;
	static int next_pipe;

	DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
		 pipe_name, pipes_open));
	
	/* not repeating pipe numbers makes it easier to track things in 
	   log files and prevents client bugs where pipe numbers are reused
	   over connection restarts */
	if (next_pipe == 0)
		next_pipe = (getpid() ^ time(NULL)) % MAX_OPEN_PIPES;

	i = bitmap_find(bmap, next_pipe);

	if (i == -1) {
		DEBUG(0,("ERROR! Out of pipe structures\n"));
		return NULL;
	}

	next_pipe = (i+1) % MAX_OPEN_PIPES;

	for (p = Pipes; p; p = p->next)
		DEBUG(5,("open pipes: name %s pnum=%x\n", p->name, p->pnum));  

	p = (pipes_struct *)malloc(sizeof(*p));

	if (!p)
		return NULL;

	ZERO_STRUCTP(p);

	DLIST_ADD(Pipes, p);

	/*
	 * Initialize the incoming RPC data buffer with one PDU worth of memory.
	 * We cheat here and say we're marshalling, as we intend to add incoming
	 * data directly into the prs_struct and we want it to auto grow. We will
	 * change the type to UNMARSALLING before processing the stream.
	 */

	if(!prs_init(&p->in_data.data, MAX_PDU_FRAG_LEN, 4, MARSHALL)) {
		DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
		return NULL;
	}

	bitmap_set(bmap, i);
	i += pipe_handle_offset;

	pipes_open++;

	p->pnum = i;

	p->open = True;
	p->device_state = 0;
	p->priority = 0;
	p->conn = conn;
	p->vuid  = vuid;

	p->max_trans_reply = 0;
	
	p->ntlmssp_chal_flags = 0;
	p->ntlmssp_auth_validated = False;
	p->ntlmssp_auth_requested = False;

	p->pipe_bound = False;
	p->fault_state = False;

	/*
	 * Initialize the incoming RPC struct.
	 */

	p->in_data.pdu_needed_len = 0;
	p->in_data.pdu_received_len = 0;

	/*
	 * Initialize the outgoing RPC struct.
	 */

	p->out_data.current_pdu_len = 0;
	p->out_data.current_pdu_sent = 0;
	p->out_data.data_sent_length = 0;

	/*
	 * Initialize the outgoing RPC data buffer with no memory.
	 */	
	prs_init(&p->out_data.rdata, 0, 4, MARSHALL);
	
	p->uid = (uid_t)-1;
	p->gid = (gid_t)-1;
	
	fstrcpy(p->name, pipe_name);
	
	DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
		 pipe_name, i, pipes_open));
	
	chain_p = p;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		x->nonce_low = 0;
	}

	x->global->application_key = data_blob_dup_talloc(x->global,
						x->global->signing_key);
	if (x->global->application_key.data == NULL) {
		ZERO_STRUCT(session_key);
		return NT_STATUS_NO_MEMORY;
	}

	if (xconn->protocol >= PROTOCOL_SMB2_24) {
		struct _derivation *d = &derivation.application;

		smb2_key_derivation(session_key, sizeof(session_key),
				    d->label.data, d->label.length,
				    d->context.data, d->context.length,
				    x->global->application_key.data);
	}
	ZERO_STRUCT(session_key);

	x->global->channels[0].signing_key = data_blob_dup_talloc(x->global->channels,
						x->global->signing_key);
	if (x->global->channels[0].signing_key.data == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	data_blob_clear_free(&session_info->session_key);
	session_info->session_key = data_blob_dup_talloc(session_info,
						x->global->application_key);
	if (session_info->session_key.data == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	session->compat = talloc_zero(session, struct user_struct);
	if (session->compat == NULL) {
		return NT_STATUS_NO_MEMORY;
	}
	session->compat->session = session;
	session->compat->homes_snum = -1;
	session->compat->session_info = session_info;
	session->compat->session_keystr = NULL;
	session->compat->vuid = session->global->session_wire_id;
	DLIST_ADD(smb2req->sconn->users, session->compat);
	smb2req->sconn->num_users++;

	if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
		session->compat->homes_snum =
			register_homes_share(session_info->unix_info->unix_name);
	}

	set_current_user_info(session_info->unix_info->sanitized_username,
			      session_info->unix_info->unix_name,
			      session_info->info->domain_name);

	reload_services(smb2req->sconn, conn_snum_used, true);

	session->status = NT_STATUS_OK;
	session->global->auth_session_info = talloc_move(session->global,
							 &session_info);
	session->global->auth_session_info_seqnum += 1;
	for (i=0; i < session->global->num_channels; i++) {
		struct smbXsrv_channel_global0 *_c =
			&session->global->channels[i];

		_c->auth_session_info_seqnum =
			session->global->auth_session_info_seqnum;
	}
	session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
	session->global->expiration_time = gensec_expire_time(auth->gensec);

	if (!session_claim(session)) {
		DEBUG(1, ("smb2: Failed to claim session "
			"for vuid=%llu\n",
			(unsigned long long)session->compat->vuid));
		return NT_STATUS_LOGON_FAILURE;
	}

	TALLOC_FREE(auth);
	status = smbXsrv_session_update(session);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
			  (unsigned long long)session->compat->vuid,
			  nt_errstr(status)));
		return NT_STATUS_LOGON_FAILURE;
	}

	/*
	 * we attach the session to the request
	 * so that the response can be signed
	 */
	if (!guest) {
		smb2req->do_signing = true;
	}

	global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);

	*out_session_id = session->global->session_wire_id;

	return NT_STATUS_OK;
}

//.........这里部分代码省略.........
		const char *homedir = pdb_get_homedir(server_info->sam_account);
		const char *logon_script = pdb_get_logon_script(server_info->sam_account);

		if (!IS_SAM_DEFAULT(server_info->sam_account, PDB_UNIXHOMEDIR)) {
			const char *unix_homedir = pdb_get_unix_homedir(server_info->sam_account);
			if (unix_homedir) {
				vuser->unix_homedir = smb_xstrdup(unix_homedir);
			}
		} else {
			struct passwd *passwd = getpwnam_alloc(vuser->user.unix_name);
			if (passwd) {
				vuser->unix_homedir = smb_xstrdup(passwd->pw_dir);
				passwd_free(&passwd);
			}
		}
		
		if (homedir) {
			vuser->homedir = smb_xstrdup(homedir);
		}
		if (logon_script) {
			vuser->logon_script = smb_xstrdup(logon_script);
		}
	}

	vuser->session_key = session_key;

	DEBUG(10,("register_vuid: (%u,%u) %s %s %s guest=%d\n", 
		  (unsigned int)vuser->uid, 
		  (unsigned int)vuser->gid,
		  vuser->user.unix_name, vuser->user.smb_name, vuser->user.domain, vuser->guest ));

	DEBUG(3, ("User name: %s\tReal name: %s\n",vuser->user.unix_name,vuser->user.full_name));	

 	if (server_info->ptok) {
		vuser->nt_user_token = dup_nt_token(server_info->ptok);
	} else {
		DEBUG(1, ("server_info does not contain a user_token - cannot continue\n"));
		free_server_info(&server_info);
		data_blob_free(&session_key);
		SAFE_FREE(vuser->homedir);
		SAFE_FREE(vuser->unix_homedir);
		SAFE_FREE(vuser->logon_script);

		SAFE_FREE(vuser);
		return UID_FIELD_INVALID;
	}

	/* use this to keep tabs on all our info from the authentication */
	vuser->server_info = server_info;

	DEBUG(3,("UNIX uid %d is UNIX user %s, and will be vuid %u\n",(int)vuser->uid,vuser->user.unix_name, vuser->vuid));

	next_vuid++;
	num_validated_vuids++;

	DLIST_ADD(validated_users, vuser);

	if (!session_claim(vuser)) {
		DEBUG(1,("Failed to claim session for vuid=%d\n", vuser->vuid));
		invalidate_vuid(vuser->vuid);
		return -1;
	}

	/* Register a home dir service for this user iff
	
	   (a) This is not a guest connection,
	   (b) we have a home directory defined 
	   (c) there s not an existing static share by that name
	   
	   If a share exists by this name (autoloaded or not) reuse it . */

	vuser->homes_snum = -1;

	if ( (!vuser->guest) && vuser->unix_homedir && *(vuser->unix_homedir)) 
	{
		int servicenumber = lp_servicenumber(vuser->user.unix_name);

		if ( servicenumber == -1 ) {
			DEBUG(3, ("Adding homes service for user '%s' using home directory: '%s'\n", 
				vuser->user.unix_name, vuser->unix_homedir));
			vuser->homes_snum = add_home_service(vuser->user.unix_name, 
						vuser->user.unix_name, vuser->unix_homedir);
		} else {
			DEBUG(3, ("Using static (or previously created) service for user '%s'; path = '%s'\n", 
				vuser->user.unix_name, lp_pathname(servicenumber) ));
			vuser->homes_snum = servicenumber;
		}
	} 
	
	if (srv_is_signing_negotiated() && !vuser->guest && !srv_signing_started()) {
		/* Try and turn on server signing on the first non-guest sessionsetup. */
		srv_set_signing(vuser->session_key, response_blob);
	}
	
	/* fill in the current_user_info struct */
	set_current_user_info( &vuser->user );


	return vuser->vuid;
}

NTSTATUS file_new(struct smb_request *req, connection_struct *conn,
		  files_struct **result)
{
	struct smbd_server_connection *sconn = conn->sconn;
	int i;
	files_struct *fsp;
	NTSTATUS status;

	/* we want to give out file handles differently on each new
	   connection because of a common bug in MS clients where they try to
	   reuse a file descriptor from an earlier smb connection. This code
	   increases the chance that the errant client will get an error rather
	   than causing corruption */
	if (sconn->first_file == 0) {
		sconn->first_file = (getpid() ^ (int)time(NULL));
		sconn->first_file %= sconn->real_max_open_files;
	}

	/* TODO: Port the id-tree implementation from Samba4 */

	i = bitmap_find(sconn->file_bmap, sconn->first_file);
	if (i == -1) {
		DEBUG(0,("ERROR! Out of file structures\n"));
		/* TODO: We have to unconditionally return a DOS error here,
		 * W2k3 even returns ERRDOS/ERRnofids for ntcreate&x with
		 * NTSTATUS negotiated */
		return NT_STATUS_TOO_MANY_OPENED_FILES;
	}

	/*
	 * Make a child of the connection_struct as an fsp can't exist
	 * independent of a connection.
	 */
	fsp = talloc_zero(conn, struct files_struct);
	if (!fsp) {
		return NT_STATUS_NO_MEMORY;
	}

	/*
	 * This can't be a child of fsp because the file_handle can be ref'd
	 * when doing a dos/fcb open, which will then share the file_handle
	 * across multiple fsps.
	 */
	fsp->fh = talloc_zero(conn, struct fd_handle);
	if (!fsp->fh) {
		TALLOC_FREE(fsp);
		return NT_STATUS_NO_MEMORY;
	}

	fsp->fh->ref_count = 1;
	fsp->fh->fd = -1;

	fsp->conn = conn;
	fsp->fh->gen_id = get_gen_count(sconn);
	GetTimeOfDay(&fsp->open_time);

	sconn->first_file = (i+1) % (sconn->real_max_open_files);

	bitmap_set(sconn->file_bmap, i);

	fsp->fnum = i + FILE_HANDLE_OFFSET;
	SMB_ASSERT(fsp->fnum < 65536);

	/*
	 * Create an smb_filename with "" for the base_name.  There are very
	 * few NULL checks, so make sure it's initialized with something. to
	 * be safe until an audit can be done.
	 */
	status = create_synthetic_smb_fname(fsp, "", NULL, NULL,
					    &fsp->fsp_name);
	if (!NT_STATUS_IS_OK(status)) {
		TALLOC_FREE(fsp);
		TALLOC_FREE(fsp->fh);
	}

	DLIST_ADD(sconn->files, fsp);
	sconn->num_files += 1;

	DEBUG(5,("allocated file structure %d, fnum = %d (%u used)\n",
		 i, fsp->fnum, (unsigned int)sconn->num_files));

	if (req != NULL) {
		req->chain_fsp = fsp;
	}

	/* A new fsp invalidates the positive and
	  negative fsp_fi_cache as the new fsp is pushed
	  at the start of the list and we search from
	  a cache hit to the *end* of the list. */

	ZERO_STRUCT(sconn->fsp_fi_cache);

	conn->num_files_open++;

	*result = fsp;
	return NT_STATUS_OK;
}

WERROR dsdb_attribute_from_ldb(struct ldb_context *ldb,
			       struct dsdb_schema *schema,
			       struct ldb_message *msg)
{
	WERROR status;
	struct dsdb_attribute *attr = talloc_zero(schema, struct dsdb_attribute);
	if (!attr) {
		return WERR_NOMEM;
	}

	GET_STRING_LDB(msg, "cn", attr, attr, cn, false);
	GET_STRING_LDB(msg, "lDAPDisplayName", attr, attr, lDAPDisplayName, true);
	GET_STRING_LDB(msg, "attributeID", attr, attr, attributeID_oid, true);
	if (!schema->prefixmap || schema->prefixmap->length == 0) {
		/* set an invalid value */
		attr->attributeID_id = DRSUAPI_ATTID_INVALID;
	} else {
		status = dsdb_schema_pfm_make_attid(schema->prefixmap,
						    attr->attributeID_oid,
						    &attr->attributeID_id);
		if (!W_ERROR_IS_OK(status)) {
			DEBUG(0,("%s: '%s': unable to map attributeID %s: %s\n",
				__location__, attr->lDAPDisplayName, attr->attributeID_oid,
				win_errstr(status)));
			return status;
		}
	}
	/* fetch msDS-IntId to be used in resolving ATTRTYP values */
	GET_UINT32_LDB(msg, "msDS-IntId", attr, msDS_IntId);

	GET_GUID_LDB(msg, "schemaIDGUID", attr, schemaIDGUID);
	GET_UINT32_LDB(msg, "mAPIID", attr, mAPIID);

	GET_GUID_LDB(msg, "attributeSecurityGUID", attr, attributeSecurityGUID);

	GET_GUID_LDB(msg, "objectGUID", attr, objectGUID);

	GET_UINT32_LDB(msg, "searchFlags", attr, searchFlags);
	GET_UINT32_LDB(msg, "systemFlags", attr, systemFlags);
	GET_BOOL_LDB(msg, "isMemberOfPartialAttributeSet", attr, isMemberOfPartialAttributeSet, false);
	GET_UINT32_LDB(msg, "linkID", attr, linkID);

	GET_STRING_LDB(msg, "attributeSyntax", attr, attr, attributeSyntax_oid, true);
	if (!schema->prefixmap || schema->prefixmap->length == 0) {
		/* set an invalid value */
		attr->attributeSyntax_id = DRSUAPI_ATTID_INVALID;
	} else {
		status = dsdb_schema_pfm_attid_from_oid(schema->prefixmap,
							attr->attributeSyntax_oid,
							&attr->attributeSyntax_id);
		if (!W_ERROR_IS_OK(status)) {
			DEBUG(0,("%s: '%s': unable to map attributeSyntax_ %s: %s\n",
				__location__, attr->lDAPDisplayName, attr->attributeSyntax_oid,
				win_errstr(status)));
			return status;
		}
	}
	GET_UINT32_LDB(msg, "oMSyntax", attr, oMSyntax);
	GET_BLOB_LDB(msg, "oMObjectClass", attr, attr, oMObjectClass);

	GET_BOOL_LDB(msg, "isSingleValued", attr, isSingleValued, true);
	GET_UINT32_PTR_LDB(msg, "rangeLower", attr, attr, rangeLower);
	GET_UINT32_PTR_LDB(msg, "rangeUpper", attr, attr, rangeUpper);
	GET_BOOL_LDB(msg, "extendedCharsAllowed", attr, extendedCharsAllowed, false);

	GET_UINT32_LDB(msg, "schemaFlagsEx", attr, schemaFlagsEx);
	GET_BLOB_LDB(msg, "msDs-Schema-Extensions", attr, attr, msDs_Schema_Extensions);

	GET_BOOL_LDB(msg, "showInAdvancedViewOnly", attr, showInAdvancedViewOnly, false);
	GET_STRING_LDB(msg, "adminDisplayName", attr, attr, adminDisplayName, false);
	GET_STRING_LDB(msg, "adminDescription", attr, attr, adminDescription, false);
	GET_STRING_LDB(msg, "classDisplayName", attr, attr, classDisplayName, false);
	GET_BOOL_LDB(msg, "isEphemeral", attr, isEphemeral, false);
	GET_BOOL_LDB(msg, "isDefunct", attr, isDefunct, false);
	GET_BOOL_LDB(msg, "systemOnly", attr, systemOnly, false);

	attr->syntax = dsdb_syntax_for_attribute(attr);
	if (!attr->syntax) {
		DEBUG(0,(__location__ ": Unknown schema syntax for %s\n",
			 attr->lDAPDisplayName));
		return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
	}

	if (dsdb_schema_setup_ldb_schema_attribute(ldb, attr) != LDB_SUCCESS) {
		DEBUG(0,(__location__ ": Unknown schema syntax for %s - ldb_syntax: %s, ldap_oid: %s\n",
			 attr->lDAPDisplayName,
			 attr->syntax->ldb_syntax,
			 attr->syntax->ldap_oid));
		return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
	}

	DLIST_ADD(schema->attributes, attr);
	return WERR_OK;
}

NTSTATUS file_new(struct smb_request *req, connection_struct *conn,
		  files_struct **result)
{
	int i;
	files_struct *fsp;

	/* we want to give out file handles differently on each new
	   connection because of a common bug in MS clients where they try to
	   reuse a file descriptor from an earlier smb connection. This code
	   increases the chance that the errant client will get an error rather
	   than causing corruption */
	if (first_file == 0) {
		first_file = (sys_getpid() ^ (int)time(NULL)) % real_max_open_files;
	}

	/* TODO: Port the id-tree implementation from Samba4 */

	i = bitmap_find(file_bmap, first_file);
	if (i == -1) {
		DEBUG(0,("ERROR! Out of file structures\n"));
		/* TODO: We have to unconditionally return a DOS error here,
		 * W2k3 even returns ERRDOS/ERRnofids for ntcreate&x with
		 * NTSTATUS negotiated */
		return NT_STATUS_TOO_MANY_OPENED_FILES;
	}

	fsp = SMB_MALLOC_P(files_struct);
	if (!fsp) {
		return NT_STATUS_NO_MEMORY;
	}

	ZERO_STRUCTP(fsp);

	fsp->fh = SMB_MALLOC_P(struct fd_handle);
	if (!fsp->fh) {
		SAFE_FREE(fsp);
		return NT_STATUS_NO_MEMORY;
	}

	ZERO_STRUCTP(fsp->fh);

	fsp->fh->ref_count = 1;
	fsp->fh->fd = -1;

	fsp->conn = conn;
	fsp->fh->gen_id = get_gen_count();
	GetTimeOfDay(&fsp->open_time);

	first_file = (i+1) % real_max_open_files;

	bitmap_set(file_bmap, i);
	files_used++;

	fsp->fnum = i + FILE_HANDLE_OFFSET;
	SMB_ASSERT(fsp->fnum < 65536);

	string_set(&fsp->fsp_name,"");
	
	DLIST_ADD(Files, fsp);

	DEBUG(5,("allocated file structure %d, fnum = %d (%d used)\n",
		 i, fsp->fnum, files_used));

	if (req != NULL) {
		req->chain_fsp = fsp;
	}

	/* A new fsp invalidates the positive and
	  negative fsp_fi_cache as the new fsp is pushed
	  at the start of the list and we search from
	  a cache hit to the *end* of the list. */

	ZERO_STRUCT(fsp_fi_cache);

	conn->num_files_open++;

	*result = fsp;
	return NT_STATUS_OK;
}