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1da177e4 LT |
1 | /* |
2 | * fs/cifs/rfc1002pdu.h | |
3 | * | |
4 | * Protocol Data Unit definitions for RFC 1001/1002 support | |
5 | * | |
6 | * Copyright (c) International Business Machines Corp., 2004 | |
7 | * Author(s): Steve French (sfrench@us.ibm.com) | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #pragma pack(1) | |
25 | ||
26 | /* NB: unlike smb/cifs packets, the RFC1002 structures are big endian */ | |
27 | ||
28 | /* RFC 1002 session packet types */ | |
29 | #define RFC1002_SESSION_MESASAGE 0x00 | |
30 | #define RFC1002_SESSION_REQUEST 0x81 | |
31 | #define RFC1002_POSITIVE_SESSION_RESPONSE 0x82 | |
32 | #define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83 | |
33 | #define RFC1002_RETARGET_SESSION_RESPONSE 0x83 | |
34 | #define RFC1002_SESSION_KEEP_ALIVE 0x85 | |
35 | ||
36 | /* RFC 1002 flags (only one defined */ | |
37 | #define RFC1002_LENGTH_EXTEND 0x80 /* high order bit of length (ie +64K) */ | |
38 | ||
39 | struct rfc1002_session_packet { | |
40 | __u8 type; | |
41 | __u8 flags; | |
42 | __u16 length; | |
43 | union { | |
44 | struct { | |
45 | __u8 called_len; | |
46 | __u8 called_name[32]; | |
47 | __u8 scope1; /* null */ | |
48 | __u8 calling_len; | |
49 | __u8 calling_name[32]; | |
50 | __u8 scope2; /* null */ | |
51 | } session_req; | |
52 | struct { | |
53 | __u32 retarget_ip_addr; | |
54 | __u16 port; | |
55 | } retarget_resp; | |
56 | __u8 neg_ses_resp_error_code; | |
57 | /* POSITIVE_SESSION_RESPONSE packet does not include trailer. | |
58 | SESSION_KEEP_ALIVE packet also does not include a trailer. | |
59 | Trailer for the SESSION_MESSAGE packet is SMB/CIFS header */ | |
60 | } trailer; | |
61 | }; | |
62 | ||
63 | /* Negative Session Response error codes */ | |
64 | #define RFC1002_NOT_LISTENING_CALLED 0x80 /* not listening on called name */ | |
65 | #define RFC1002_NOT_LISTENING_CALLING 0x81 /* not listening on calling name */ | |
66 | #define RFC1002_NOT_PRESENT 0x82 /* called name not present */ | |
67 | #define RFC1002_INSUFFICIENT_RESOURCE 0x83 | |
68 | #define RFC1002_UNSPECIFIED_ERROR 0x8F | |
69 | ||
70 | /* RFC 1002 Datagram service packets are not defined here as they | |
71 | are not needed for the network filesystem client unless we plan on | |
72 | implementing broadcast resolution of the server ip address (from | |
73 | server netbios name). Currently server names are resolved only via DNS | |
74 | (tcp name) or ip address or an /etc/hosts equivalent mapping to ip address.*/ | |
75 | ||
76 | #define DEFAULT_CIFS_CALLED_NAME "*SMBSERVER " | |
77 | ||
78 | #pragma pack() /* resume default structure packing */ | |
79 |