0753ca7bc2
unaligned structures coming in off the wire gcc on arm processors generates very odd code with pragma pack specified - although it does pack the structures in some sense - it does not allow you to access unaligned elements in nested structures at the right offset as other architectures do. Oddly enough though, specifying the structures as packed the long way - one by one with the packed attribute does work. Rather than fighting over whether this is a gcc bug or some obscure side effect of pragma pack, it is easier to do what most (all but 96 other places in the kernel) do - and replace pragma pack with dozens of attribute(packed) structure qualifiers. Much more verbose ... but at least it works. Signed-off-by: David Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com> CG: -----------------------------------------------------------------------
75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/*
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* fs/cifs/rfc1002pdu.h
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*
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* Protocol Data Unit definitions for RFC 1001/1002 support
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*
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* Copyright (c) International Business Machines Corp., 2004
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* NB: unlike smb/cifs packets, the RFC1002 structures are big endian */
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/* RFC 1002 session packet types */
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#define RFC1002_SESSION_MESASAGE 0x00
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#define RFC1002_SESSION_REQUEST 0x81
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#define RFC1002_POSITIVE_SESSION_RESPONSE 0x82
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#define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83
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#define RFC1002_RETARGET_SESSION_RESPONSE 0x83
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#define RFC1002_SESSION_KEEP_ALIVE 0x85
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/* RFC 1002 flags (only one defined */
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#define RFC1002_LENGTH_EXTEND 0x80 /* high order bit of length (ie +64K) */
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struct rfc1002_session_packet {
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__u8 type;
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__u8 flags;
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__u16 length;
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union {
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struct {
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__u8 called_len;
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__u8 called_name[32];
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__u8 scope1; /* null */
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__u8 calling_len;
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__u8 calling_name[32];
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__u8 scope2; /* null */
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} __attribute__((packed)) session_req;
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struct {
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__u32 retarget_ip_addr;
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__u16 port;
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} __attribute__((packed)) retarget_resp;
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__u8 neg_ses_resp_error_code;
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/* POSITIVE_SESSION_RESPONSE packet does not include trailer.
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SESSION_KEEP_ALIVE packet also does not include a trailer.
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Trailer for the SESSION_MESSAGE packet is SMB/CIFS header */
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} __attribute__((packed)) trailer;
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} __attribute__((packed));
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/* Negative Session Response error codes */
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#define RFC1002_NOT_LISTENING_CALLED 0x80 /* not listening on called name */
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#define RFC1002_NOT_LISTENING_CALLING 0x81 /* not listening on calling name */
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#define RFC1002_NOT_PRESENT 0x82 /* called name not present */
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#define RFC1002_INSUFFICIENT_RESOURCE 0x83
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#define RFC1002_UNSPECIFIED_ERROR 0x8F
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/* RFC 1002 Datagram service packets are not defined here as they
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are not needed for the network filesystem client unless we plan on
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implementing broadcast resolution of the server ip address (from
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server netbios name). Currently server names are resolved only via DNS
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(tcp name) or ip address or an /etc/hosts equivalent mapping to ip address.*/
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#define DEFAULT_CIFS_CALLED_NAME "*SMBSERVER "
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