Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/cifsglob.h |
| 3 | * |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
Jeremy Allison | 7ee1af7 | 2006-08-02 21:56:33 +0000 | [diff] [blame] | 6 | * Jeremy Allison (jra@samba.org) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This library is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU Lesser General Public License as published |
| 10 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 16 | * the GNU Lesser General Public License for more details. |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 17 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | */ |
Suresh Jayaraman | abd2e44 | 2010-06-22 20:52:50 +0530 | [diff] [blame] | 19 | #ifndef _CIFS_GLOB_H |
| 20 | #define _CIFS_GLOB_H |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/in.h> |
| 23 | #include <linux/in6.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 24 | #include <linux/slab.h> |
Pavel Shilovsky | 2dc7e1c | 2011-12-26 22:53:34 +0400 | [diff] [blame] | 25 | #include <linux/mempool.h> |
Tejun Heo | 9b64697 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 26 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "cifs_fs_sb.h" |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 28 | #include "cifsacl.h" |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 29 | #include <crypto/internal/hash.h> |
| 30 | #include <linux/scatterlist.h> |
Pavel Shilovsky | d60622e | 2012-05-28 15:19:39 +0400 | [diff] [blame] | 31 | #ifdef CONFIG_CIFS_SMB2 |
| 32 | #include "smb2pdu.h" |
| 33 | #endif |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 34 | |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 35 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | /* |
| 38 | * The sizes of various internal tables and strings |
| 39 | */ |
| 40 | #define MAX_UID_INFO 16 |
| 41 | #define MAX_SES_INFO 2 |
| 42 | #define MAX_TCON_INFO 4 |
| 43 | |
Shirish Pargaonkar | ef571ca | 2008-07-24 15:56:05 +0000 | [diff] [blame] | 44 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define MAX_SERVER_SIZE 15 |
Steve French | 2e325d5 | 2011-03-08 05:51:19 +0000 | [diff] [blame] | 46 | #define MAX_SHARE_SIZE 80 |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 47 | #define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ |
| 48 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #define CIFS_MIN_RCV_POOL 4 |
| 51 | |
Shirish Pargaonkar | 2c0c2a0 | 2012-05-21 09:20:12 -0500 | [diff] [blame] | 52 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 54 | * default attribute cache timeout (jiffies) |
| 55 | */ |
| 56 | #define CIFS_DEF_ACTIMEO (1 * HZ) |
| 57 | |
| 58 | /* |
| 59 | * max attribute cache timeout (jiffies) - 2^30 |
| 60 | */ |
| 61 | #define CIFS_MAX_ACTIMEO (1 << 30) |
| 62 | |
| 63 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | * MAX_REQ is the maximum number of requests that WE will send |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 65 | * on one socket concurrently. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | */ |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 67 | #define CIFS_MAX_REQ 32767 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 69 | #define RFC1001_NAME_LEN 15 |
| 70 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) |
| 71 | |
| 72 | /* currently length of NIP6_FMT */ |
| 73 | #define SERVER_NAME_LENGTH 40 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
| 75 | |
| 76 | /* used to define string lengths for reversing unicode strings */ |
| 77 | /* (256+1)*2 = 514 */ |
| 78 | /* (max path length + 1 for null) * 2 for unicode */ |
| 79 | #define MAX_NAME 514 |
| 80 | |
Pavel Shilovsky | 9094fad | 2012-07-12 18:30:44 +0400 | [diff] [blame] | 81 | /* SMB echo "timeout" -- FIXME: tunable? */ |
| 82 | #define SMB_ECHO_INTERVAL (60 * HZ) |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | #include "cifspdu.h" |
| 85 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | #ifndef XATTR_DOS_ATTRIB |
| 87 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" |
| 88 | #endif |
| 89 | |
| 90 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | * CIFS vfs client Status information (based on what we know.) |
| 92 | */ |
| 93 | |
Steve French | 6c0f621 | 2010-10-23 16:51:40 +0000 | [diff] [blame] | 94 | /* associated with each tcp and smb session */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | enum statusEnum { |
| 96 | CifsNew = 0, |
| 97 | CifsGood, |
| 98 | CifsExiting, |
Steve French | fd88ce9 | 2011-04-12 01:01:14 +0000 | [diff] [blame] | 99 | CifsNeedReconnect, |
| 100 | CifsNeedNegotiate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | }; |
| 102 | |
| 103 | enum securityEnum { |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 104 | LANMAN = 0, /* Legacy LANMAN auth */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 105 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 107 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
Steve French | f46c723 | 2009-06-25 03:04:20 +0000 | [diff] [blame] | 108 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
Steve French | c16fefa | 2008-08-19 19:35:33 +0000 | [diff] [blame] | 109 | Kerberos, /* Kerberos via SPNEGO */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | enum protocolEnum { |
Steve French | 3ec332e | 2008-11-14 03:35:10 +0000 | [diff] [blame] | 113 | TCP = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | SCTP |
| 115 | /* Netbios frames protocol not supported at this time */ |
| 116 | }; |
| 117 | |
Shirish Pargaonkar | 5f98ca9 | 2010-09-18 22:01:58 -0500 | [diff] [blame] | 118 | struct session_key { |
Steve French | b609f06 | 2007-07-09 07:55:14 +0000 | [diff] [blame] | 119 | unsigned int len; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 120 | char *response; |
Steve French | b609f06 | 2007-07-09 07:55:14 +0000 | [diff] [blame] | 121 | }; |
| 122 | |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 123 | /* crypto security descriptor definition */ |
| 124 | struct sdesc { |
| 125 | struct shash_desc shash; |
| 126 | char ctx[]; |
| 127 | }; |
| 128 | |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 129 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 130 | struct cifs_secmech { |
| 131 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ |
| 132 | struct crypto_shash *md5; /* md5 hash function */ |
Pavel Shilovsky | 3c1bf7e | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 133 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 134 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
| 135 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ |
Pavel Shilovsky | 3c1bf7e | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 136 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 137 | }; |
| 138 | |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 139 | /* per smb session structure/fields */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 140 | struct ntlmssp_auth { |
| 141 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
| 142 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ |
| 143 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 144 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 145 | }; |
| 146 | |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 147 | struct cifs_cred { |
| 148 | int uid; |
| 149 | int gid; |
| 150 | int mode; |
| 151 | int cecount; |
| 152 | struct cifs_sid osid; |
| 153 | struct cifs_sid gsid; |
| 154 | struct cifs_ntace *ntaces; |
| 155 | struct cifs_ace *aces; |
| 156 | }; |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | /* |
| 159 | ***************************************************************** |
| 160 | * Except the CIFS PDUs themselves all the |
| 161 | * globally interesting structs should go here |
| 162 | ***************************************************************** |
| 163 | */ |
| 164 | |
Jeff Layton | bf5ea0e | 2012-09-18 16:20:34 -0700 | [diff] [blame] | 165 | /* |
| 166 | * A smb_rqst represents a complete request to be issued to a server. It's |
| 167 | * formed by a kvec array, followed by an array of pages. Page data is assumed |
| 168 | * to start at the beginning of the first page. |
| 169 | */ |
| 170 | struct smb_rqst { |
| 171 | struct kvec *rq_iov; /* array of kvecs */ |
| 172 | unsigned int rq_nvec; /* number of kvecs in array */ |
| 173 | struct page **rq_pages; /* pointer to array of page ptrs */ |
| 174 | unsigned int rq_npages; /* number pages in array */ |
| 175 | unsigned int rq_pagesz; /* page size to use */ |
| 176 | unsigned int rq_tailsz; /* length of last page */ |
| 177 | }; |
| 178 | |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 179 | enum smb_version { |
| 180 | Smb_1 = 1, |
Steve French | dd446b1 | 2012-11-28 23:21:06 -0600 | [diff] [blame] | 181 | Smb_20, |
Steve French | 1080ef7 | 2011-02-24 18:07:19 +0000 | [diff] [blame] | 182 | Smb_21, |
Steve French | e4aa25e | 2012-10-01 12:26:22 -0500 | [diff] [blame] | 183 | Smb_30, |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 184 | }; |
| 185 | |
Jeff Layton | 121b046 | 2012-05-15 12:21:10 -0400 | [diff] [blame] | 186 | struct mid_q_entry; |
| 187 | struct TCP_Server_Info; |
Pavel Shilovsky | 55157df | 2012-02-28 14:04:17 +0300 | [diff] [blame] | 188 | struct cifsFileInfo; |
Pavel Shilovsky | 082d064 | 2012-05-17 12:18:21 +0400 | [diff] [blame] | 189 | struct cifs_ses; |
Pavel Shilovsky | 2e6e02a | 2012-05-25 11:11:39 +0400 | [diff] [blame] | 190 | struct cifs_tcon; |
Pavel Shilovsky | b669f33 | 2012-05-27 20:21:53 +0400 | [diff] [blame] | 191 | struct dfs_info3_param; |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 192 | struct cifs_fattr; |
Pavel Shilovsky | 9224dfc | 2012-05-27 20:39:52 +0400 | [diff] [blame] | 193 | struct smb_vol; |
Pavel Shilovsky | fb1214e | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 194 | struct cifs_fid; |
Pavel Shilovsky | fc9c596 | 2012-09-18 16:20:28 -0700 | [diff] [blame] | 195 | struct cifs_readdata; |
Pavel Shilovsky | c9de5c8 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 196 | struct cifs_writedata; |
Pavel Shilovsky | f9c6e23 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 197 | struct cifs_io_parms; |
Pavel Shilovsky | 92fc65a | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 198 | struct cifs_search_info; |
Pavel Shilovsky | 95a3f2f | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 199 | struct cifsInodeInfo; |
Jeff Layton | 121b046 | 2012-05-15 12:21:10 -0400 | [diff] [blame] | 200 | |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 201 | struct smb_version_operations { |
Jeff Layton | 121b046 | 2012-05-15 12:21:10 -0400 | [diff] [blame] | 202 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
| 203 | struct mid_q_entry *); |
Pavel Shilovsky | 55157df | 2012-02-28 14:04:17 +0300 | [diff] [blame] | 204 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
Pavel Shilovsky | 082d064 | 2012-05-17 12:18:21 +0400 | [diff] [blame] | 205 | /* setup request: allocate mid, sign message */ |
Jeff Layton | fec344e | 2012-09-18 16:20:35 -0700 | [diff] [blame] | 206 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
| 207 | struct smb_rqst *); |
Pavel Shilovsky | 4574084 | 2012-06-01 14:26:18 +0400 | [diff] [blame] | 208 | /* setup async request: allocate mid, sign message */ |
Jeff Layton | fec344e | 2012-09-18 16:20:35 -0700 | [diff] [blame] | 209 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
| 210 | struct smb_rqst *); |
Pavel Shilovsky | 082d064 | 2012-05-17 12:18:21 +0400 | [diff] [blame] | 211 | /* check response: verify signature, map error */ |
| 212 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, |
| 213 | bool); |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 214 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
| 215 | const int); |
Pavel Shilovsky | 4527578 | 2012-05-17 17:53:29 +0400 | [diff] [blame] | 216 | void (*set_credits)(struct TCP_Server_Info *, const int); |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 217 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
| 218 | unsigned int (*get_credits)(struct mid_q_entry *); |
Pavel Shilovsky | 8825736 | 2012-05-23 14:01:59 +0400 | [diff] [blame] | 219 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
Pavel Shilovsky | eb37871 | 2012-05-17 13:02:51 +0400 | [diff] [blame] | 220 | /* data offset from read response message */ |
| 221 | unsigned int (*read_data_offset)(char *); |
| 222 | /* data length from read response message */ |
| 223 | unsigned int (*read_data_length)(char *); |
| 224 | /* map smb to linux error */ |
| 225 | int (*map_error)(char *, bool); |
Pavel Shilovsky | 8aa26f3 | 2012-05-17 13:25:35 +0400 | [diff] [blame] | 226 | /* find mid corresponding to the response message */ |
| 227 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); |
| 228 | void (*dump_detail)(void *); |
Pavel Shilovsky | 44c5818 | 2012-05-28 14:16:31 +0400 | [diff] [blame] | 229 | void (*clear_stats)(struct cifs_tcon *); |
| 230 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); |
Pavel Shilovsky | 8aa26f3 | 2012-05-17 13:25:35 +0400 | [diff] [blame] | 231 | /* verify the message */ |
| 232 | int (*check_message)(char *, unsigned int); |
| 233 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
Pavel Shilovsky | 316cf94 | 2012-05-23 14:31:03 +0400 | [diff] [blame] | 234 | /* process transaction2 response */ |
| 235 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, |
| 236 | char *, int); |
Pavel Shilovsky | 286170a | 2012-05-25 10:43:58 +0400 | [diff] [blame] | 237 | /* check if we need to negotiate */ |
| 238 | bool (*need_neg)(struct TCP_Server_Info *); |
| 239 | /* negotiate to the server */ |
| 240 | int (*negotiate)(const unsigned int, struct cifs_ses *); |
Pavel Shilovsky | 24985c5 | 2012-09-18 16:20:28 -0700 | [diff] [blame] | 241 | /* set negotiated write size */ |
| 242 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); |
| 243 | /* set negotiated read size */ |
| 244 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); |
Pavel Shilovsky | 58c45c5 | 2012-05-25 10:54:49 +0400 | [diff] [blame] | 245 | /* setup smb sessionn */ |
| 246 | int (*sess_setup)(const unsigned int, struct cifs_ses *, |
| 247 | const struct nls_table *); |
| 248 | /* close smb session */ |
| 249 | int (*logoff)(const unsigned int, struct cifs_ses *); |
Pavel Shilovsky | 2e6e02a | 2012-05-25 11:11:39 +0400 | [diff] [blame] | 250 | /* connect to a server share */ |
| 251 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, |
| 252 | struct cifs_tcon *, const struct nls_table *); |
| 253 | /* close tree connecion */ |
| 254 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); |
Pavel Shilovsky | b669f33 | 2012-05-27 20:21:53 +0400 | [diff] [blame] | 255 | /* get DFS referrals */ |
| 256 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, |
| 257 | const char *, struct dfs_info3_param **, |
| 258 | unsigned int *, const struct nls_table *, int); |
Pavel Shilovsky | af4281d | 2012-05-27 20:48:35 +0400 | [diff] [blame] | 259 | /* informational QFS call */ |
| 260 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); |
Pavel Shilovsky | 68889f2 | 2012-05-25 14:40:22 +0400 | [diff] [blame] | 261 | /* check if a path is accessible or not */ |
| 262 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, |
| 263 | struct cifs_sb_info *, const char *); |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 264 | /* query path data from the server */ |
| 265 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, |
| 266 | struct cifs_sb_info *, const char *, |
| 267 | FILE_ALL_INFO *, bool *); |
Pavel Shilovsky | 4ad6504 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 268 | /* query file data from the server */ |
| 269 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, |
| 270 | struct cifs_fid *, FILE_ALL_INFO *); |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 271 | /* get server index number */ |
| 272 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, |
| 273 | struct cifs_sb_info *, const char *, |
| 274 | u64 *uniqueid, FILE_ALL_INFO *); |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 275 | /* set size by path */ |
| 276 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, |
| 277 | const char *, __u64, struct cifs_sb_info *, bool); |
| 278 | /* set size by file handle */ |
| 279 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, |
| 280 | struct cifsFileInfo *, __u64, bool); |
Pavel Shilovsky | 6bdf6db | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 281 | /* set attributes */ |
| 282 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, |
| 283 | const unsigned int); |
Pavel Shilovsky | f6d7617 | 2012-05-25 14:47:16 +0400 | [diff] [blame] | 284 | /* check if we can send an echo or nor */ |
| 285 | bool (*can_echo)(struct TCP_Server_Info *); |
| 286 | /* send echo request */ |
| 287 | int (*echo)(struct TCP_Server_Info *); |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 288 | /* create directory */ |
| 289 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, |
| 290 | struct cifs_sb_info *); |
| 291 | /* set info on created directory */ |
| 292 | void (*mkdir_setinfo)(struct inode *, const char *, |
| 293 | struct cifs_sb_info *, struct cifs_tcon *, |
| 294 | const unsigned int); |
Pavel Shilovsky | f958ca5 | 2012-07-10 16:14:18 +0400 | [diff] [blame] | 295 | /* remove directory */ |
| 296 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, |
| 297 | struct cifs_sb_info *); |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 298 | /* unlink file */ |
| 299 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, |
| 300 | struct cifs_sb_info *); |
| 301 | /* open, rename and delete file */ |
| 302 | int (*rename_pending_delete)(const char *, struct dentry *, |
| 303 | const unsigned int); |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 304 | /* send rename request */ |
| 305 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, |
| 306 | const char *, struct cifs_sb_info *); |
Steve French | d6e906f | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 307 | /* send create hardlink request */ |
| 308 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, |
| 309 | const char *, const char *, |
| 310 | struct cifs_sb_info *); |
Pavel Shilovsky | fb1214e | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 311 | /* open a file for non-posix mounts */ |
| 312 | int (*open)(const unsigned int, struct cifs_tcon *, const char *, int, |
| 313 | int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *, |
| 314 | struct cifs_sb_info *); |
| 315 | /* set fid protocol-specific info */ |
| 316 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); |
Pavel Shilovsky | 0ff78a2 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 317 | /* close a file */ |
Pavel Shilovsky | 760ad0c | 2012-09-25 11:00:07 +0400 | [diff] [blame] | 318 | void (*close)(const unsigned int, struct cifs_tcon *, |
| 319 | struct cifs_fid *); |
Pavel Shilovsky | 1d8c4c0 | 2012-09-18 16:20:27 -0700 | [diff] [blame] | 320 | /* send a flush request to the server */ |
| 321 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); |
Pavel Shilovsky | fc9c596 | 2012-09-18 16:20:28 -0700 | [diff] [blame] | 322 | /* async read from the server */ |
| 323 | int (*async_readv)(struct cifs_readdata *); |
Pavel Shilovsky | c9de5c8 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 324 | /* async write to the server */ |
| 325 | int (*async_writev)(struct cifs_writedata *); |
Pavel Shilovsky | f9c6e23 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 326 | /* sync read from the server */ |
| 327 | int (*sync_read)(const unsigned int, struct cifsFileInfo *, |
| 328 | struct cifs_io_parms *, unsigned int *, char **, |
| 329 | int *); |
Pavel Shilovsky | ba9ad725 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 330 | /* sync write to the server */ |
| 331 | int (*sync_write)(const unsigned int, struct cifsFileInfo *, |
| 332 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
| 333 | unsigned long); |
Pavel Shilovsky | 92fc65a | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 334 | /* open dir, start readdir */ |
| 335 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, |
| 336 | const char *, struct cifs_sb_info *, |
| 337 | struct cifs_fid *, __u16, |
| 338 | struct cifs_search_info *); |
| 339 | /* continue readdir */ |
| 340 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, |
| 341 | struct cifs_fid *, |
| 342 | __u16, struct cifs_search_info *srch_inf); |
| 343 | /* close dir */ |
| 344 | int (*close_dir)(const unsigned int, struct cifs_tcon *, |
| 345 | struct cifs_fid *); |
| 346 | /* calculate a size of SMB message */ |
| 347 | unsigned int (*calc_smb_size)(void *); |
Pavel Shilovsky | 2e44b28 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 348 | /* check for STATUS_PENDING and process it in a positive case */ |
| 349 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); |
Pavel Shilovsky | 95a3f2f | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 350 | /* send oplock break response */ |
| 351 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, |
| 352 | struct cifsInodeInfo *); |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 353 | /* query remote filesystem */ |
| 354 | int (*queryfs)(const unsigned int, struct cifs_tcon *, |
| 355 | struct kstatfs *); |
Pavel Shilovsky | d39a4f7 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 356 | /* send mandatory brlock to the server */ |
| 357 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, |
| 358 | __u64, __u32, int, int, bool); |
| 359 | /* unlock range of mandatory locks */ |
| 360 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, |
| 361 | const unsigned int); |
| 362 | /* push brlocks from the cache to the server */ |
| 363 | int (*push_mand_locks)(struct cifsFileInfo *); |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 364 | /* get lease key of the inode */ |
| 365 | void (*get_lease_key)(struct inode *, struct cifs_fid *fid); |
| 366 | /* set lease key of the inode */ |
| 367 | void (*set_lease_key)(struct inode *, struct cifs_fid *fid); |
| 368 | /* generate new lease key */ |
| 369 | void (*new_lease_key)(struct cifs_fid *fid); |
Steve French | 38107d4 | 2012-12-08 22:08:06 -0600 | [diff] [blame] | 370 | int (*calc_signature)(struct smb_rqst *rqst, |
| 371 | struct TCP_Server_Info *server); |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 372 | }; |
| 373 | |
| 374 | struct smb_version_values { |
| 375 | char *version_string; |
Steve French | e4aa25e | 2012-10-01 12:26:22 -0500 | [diff] [blame] | 376 | __u16 protocol_id; |
| 377 | __u32 req_capabilities; |
Pavel Shilovsky | 106dc53 | 2012-02-28 14:23:34 +0300 | [diff] [blame] | 378 | __u32 large_lock_type; |
| 379 | __u32 exclusive_lock_type; |
| 380 | __u32 shared_lock_type; |
| 381 | __u32 unlock_lock_type; |
Pavel Shilovsky | 1887f60 | 2012-05-17 12:45:31 +0400 | [diff] [blame] | 382 | size_t header_size; |
| 383 | size_t max_header_size; |
Pavel Shilovsky | eb37871 | 2012-05-17 13:02:51 +0400 | [diff] [blame] | 384 | size_t read_rsp_size; |
Pavel Shilovsky | 2dc7e1c | 2011-12-26 22:53:34 +0400 | [diff] [blame] | 385 | __le16 lock_cmd; |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 386 | unsigned int cap_unix; |
| 387 | unsigned int cap_nt_find; |
| 388 | unsigned int cap_large_files; |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 389 | }; |
| 390 | |
Pavel Shilovsky | 1887f60 | 2012-05-17 12:45:31 +0400 | [diff] [blame] | 391 | #define HEADER_SIZE(server) (server->vals->header_size) |
| 392 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) |
| 393 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 394 | struct smb_vol { |
| 395 | char *username; |
| 396 | char *password; |
| 397 | char *domainname; |
| 398 | char *UNC; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 399 | char *iocharset; /* local code page for mapping to and from Unicode */ |
| 400 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ |
| 401 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ |
| 402 | uid_t cred_uid; |
| 403 | uid_t linux_uid; |
| 404 | gid_t linux_gid; |
Shirish Pargaonkar | 3d3ea8e | 2011-09-26 09:56:44 -0500 | [diff] [blame] | 405 | uid_t backupuid; |
| 406 | gid_t backupgid; |
Al Viro | 5206efd | 2011-07-26 03:22:14 -0400 | [diff] [blame] | 407 | umode_t file_mode; |
| 408 | umode_t dir_mode; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 409 | unsigned secFlg; |
| 410 | bool retry:1; |
| 411 | bool intr:1; |
| 412 | bool setuids:1; |
| 413 | bool override_uid:1; |
| 414 | bool override_gid:1; |
| 415 | bool dynperm:1; |
| 416 | bool noperm:1; |
| 417 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ |
| 418 | bool cifs_acl:1; |
Shirish Pargaonkar | 3d3ea8e | 2011-09-26 09:56:44 -0500 | [diff] [blame] | 419 | bool backupuid_specified; /* mount option backupuid is specified */ |
| 420 | bool backupgid_specified; /* mount option backupgid is specified */ |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 421 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
| 422 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ |
| 423 | bool direct_io:1; |
| 424 | bool strict_io:1; /* strict cache behavior */ |
| 425 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
| 426 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
| 427 | bool no_linux_ext:1; |
| 428 | bool sfu_emul:1; |
| 429 | bool nullauth:1; /* attempt to authenticate with null user */ |
| 430 | bool nocase:1; /* request case insensitive filenames */ |
| 431 | bool nobrl:1; /* disable sending byte range locks to srv */ |
| 432 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
| 433 | bool seal:1; /* request transport encryption on share */ |
| 434 | bool nodfs:1; /* Do not request DFS, even if available */ |
| 435 | bool local_lease:1; /* check leases only on local system, not remote */ |
| 436 | bool noblocksnd:1; |
| 437 | bool noautotune:1; |
| 438 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ |
| 439 | bool fsc:1; /* enable fscache */ |
| 440 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ |
| 441 | bool multiuser:1; |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 442 | bool rwpidforward:1; /* pid forward for read/write operations */ |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 443 | unsigned int rsize; |
| 444 | unsigned int wsize; |
| 445 | bool sockopt_tcp_nodelay:1; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 446 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 447 | struct smb_version_operations *ops; |
| 448 | struct smb_version_values *vals; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 449 | char *prepath; |
Jeff Layton | b979aaa | 2012-11-26 11:09:55 -0500 | [diff] [blame] | 450 | struct sockaddr_storage dstaddr; /* destination address */ |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 451 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
| 452 | struct nls_table *local_nls; |
| 453 | }; |
| 454 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 455 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
| 456 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ |
| 457 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ |
| 458 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
| 459 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ |
| 460 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ |
| 461 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ |
| 462 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ |
Shirish Pargaonkar | 3d3ea8e | 2011-09-26 09:56:44 -0500 | [diff] [blame] | 463 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
| 464 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 465 | |
| 466 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ |
| 467 | MS_NODEV | MS_SYNCHRONOUS) |
| 468 | |
| 469 | struct cifs_mnt_data { |
| 470 | struct cifs_sb_info *cifs_sb; |
| 471 | struct smb_vol *vol; |
| 472 | int flags; |
| 473 | }; |
| 474 | |
Pavel Shilovsky | 792af7b | 2012-03-23 14:28:02 -0400 | [diff] [blame] | 475 | static inline unsigned int |
| 476 | get_rfc1002_length(void *buf) |
| 477 | { |
| 478 | return be32_to_cpu(*((__be32 *)buf)); |
| 479 | } |
| 480 | |
Pavel Shilovsky | ec2e452 | 2011-12-27 16:12:43 +0400 | [diff] [blame] | 481 | static inline void |
| 482 | inc_rfc1001_len(void *buf, int count) |
| 483 | { |
| 484 | be32_add_cpu((__be32 *)buf, count); |
| 485 | } |
| 486 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | struct TCP_Server_Info { |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 488 | struct list_head tcp_ses_list; |
| 489 | struct list_head smb_ses_list; |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 490 | int srv_count; /* reference counter */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 491 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 492 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 493 | struct smb_version_operations *ops; |
| 494 | struct smb_version_values *vals; |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 495 | enum statusEnum tcpStatus; /* what we think the status is */ |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 496 | char *hostname; /* hostname portion of UNC string */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | struct socket *ssocket; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 498 | struct sockaddr_storage dstaddr; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 499 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 500 | #ifdef CONFIG_NET_NS |
| 501 | struct net *net; |
| 502 | #endif |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 503 | wait_queue_head_t response_q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
| 505 | struct list_head pending_mid_q; |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 506 | bool noblocksnd; /* use blocking sendmsg */ |
| 507 | bool noautotune; /* do not autotune send buf sizes */ |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 508 | bool tcp_nodelay; |
Pavel Shilovsky | 2d86dbc | 2012-02-06 15:59:18 +0400 | [diff] [blame] | 509 | int credits; /* send no more requests at once */ |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 510 | unsigned int in_flight; /* number of requests on the wire to server */ |
Pavel Shilovsky | 2d86dbc | 2012-02-06 15:59:18 +0400 | [diff] [blame] | 511 | spinlock_t req_lock; /* protect the two values above */ |
Jeff Layton | 72ca545 | 2008-12-01 07:09:36 -0500 | [diff] [blame] | 512 | struct mutex srv_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | struct task_struct *tsk; |
| 514 | char server_GUID[16]; |
Pavel Shilovsky | 286170a | 2012-05-25 10:43:58 +0400 | [diff] [blame] | 515 | __u16 sec_mode; |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 516 | bool session_estab; /* mark when very first sess is established */ |
Pavel Shilovsky | 28ea529 | 2012-05-23 16:18:00 +0400 | [diff] [blame] | 517 | #ifdef CONFIG_CIFS_SMB2 |
| 518 | int echo_credits; /* echo reserved slots */ |
| 519 | int oplock_credits; /* oplock break reserved slots */ |
| 520 | bool echoes:1; /* enable echoes */ |
| 521 | #endif |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 522 | u16 dialect; /* dialect index that server chose */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | enum securityEnum secType; |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 524 | bool oplocks:1; /* enable oplocks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | unsigned int maxReq; /* Clients should submit no more */ |
| 526 | /* than maxReq distinct unanswered SMBs to the server when using */ |
| 527 | /* multiplexed reads or writes */ |
| 528 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
| 529 | /* message size the server can send or receive for non-raw SMBs */ |
Steve French | 7e90d70 | 2011-02-08 23:52:32 +0000 | [diff] [blame] | 530 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
| 531 | /* when socket is setup (and during reconnect) before NegProt sent */ |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 532 | unsigned int max_rw; /* maxRw specifies the maximum */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | /* message size the server can send or receive for */ |
| 534 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 535 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
| 536 | those that can be specified uniquely with |
| 537 | vcnumbers */ |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 538 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
Steve French | de7ed55 | 2006-09-30 13:25:52 +0000 | [diff] [blame] | 539 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
Pavel Shilovsky | 243d04b | 2012-03-23 14:28:03 -0400 | [diff] [blame] | 540 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
Shirish Pargaonkar | d3ba50b | 2010-10-27 15:20:36 -0500 | [diff] [blame] | 541 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 542 | /* 16th byte of RFC1001 workstation name is always null */ |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 543 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
Jeff Layton | a0f8b4f | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 544 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
Shirish Pargaonkar | 5f98ca9 | 2010-09-18 22:01:58 -0500 | [diff] [blame] | 545 | struct session_key session_key; |
Steve French | 3a5ff61 | 2006-07-14 22:37:11 +0000 | [diff] [blame] | 546 | unsigned long lstrp; /* when we got last response from this server */ |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 547 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
Jeff Layton | 26efa0b | 2010-04-24 07:57:49 -0400 | [diff] [blame] | 548 | /* extended security flavors that server supports */ |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 549 | bool sec_ntlmssp; /* supports NTLMSSP */ |
| 550 | bool sec_kerberosu2u; /* supports U2U Kerberos */ |
Jeff Layton | 26efa0b | 2010-04-24 07:57:49 -0400 | [diff] [blame] | 551 | bool sec_kerberos; /* supports plain Kerberos */ |
| 552 | bool sec_mskerberos; /* supports legacy MS Kerberos */ |
Jeff Layton | 2a37ef9 | 2011-10-19 15:29:23 -0400 | [diff] [blame] | 553 | bool large_buf; /* is current buffer large? */ |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 554 | struct delayed_work echo; /* echo ping workqueue job */ |
Jeff Layton | 1041e3f | 2011-10-19 15:28:27 -0400 | [diff] [blame] | 555 | struct kvec *iov; /* reusable kvec array for receives */ |
| 556 | unsigned int nr_iov; /* number of kvecs in array */ |
Jeff Layton | 2a37ef9 | 2011-10-19 15:29:23 -0400 | [diff] [blame] | 557 | char *smallbuf; /* pointer to current "small" buffer */ |
| 558 | char *bigbuf; /* pointer to current "big" buffer */ |
| 559 | unsigned int total_read; /* total amount of data read in this pass */ |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 560 | #ifdef CONFIG_CIFS_FSCACHE |
| 561 | struct fscache_cookie *fscache; /* client index cache cookie */ |
| 562 | #endif |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 563 | #ifdef CONFIG_CIFS_STATS2 |
Steve French | 789e666 | 2011-08-09 18:44:44 +0000 | [diff] [blame] | 564 | atomic_t in_send; /* requests trying to send */ |
Jeff Layton | c3dccf4 | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 565 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
| 566 | #endif |
Pavel Shilovsky | ec2e452 | 2011-12-27 16:12:43 +0400 | [diff] [blame] | 567 | #ifdef CONFIG_CIFS_SMB2 |
| 568 | unsigned int max_read; |
| 569 | unsigned int max_write; |
| 570 | #endif /* CONFIG_CIFS_SMB2 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | }; |
| 572 | |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 573 | static inline unsigned int |
| 574 | in_flight(struct TCP_Server_Info *server) |
| 575 | { |
| 576 | unsigned int num; |
| 577 | spin_lock(&server->req_lock); |
| 578 | num = server->in_flight; |
| 579 | spin_unlock(&server->req_lock); |
| 580 | return num; |
| 581 | } |
| 582 | |
Pavel Shilovsky | 2d86dbc | 2012-02-06 15:59:18 +0400 | [diff] [blame] | 583 | static inline bool |
Pavel Shilovsky | bc205ed | 2012-03-15 13:22:27 +0300 | [diff] [blame] | 584 | has_credits(struct TCP_Server_Info *server, int *credits) |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 585 | { |
Pavel Shilovsky | 2d86dbc | 2012-02-06 15:59:18 +0400 | [diff] [blame] | 586 | int num; |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 587 | spin_lock(&server->req_lock); |
Pavel Shilovsky | bc205ed | 2012-03-15 13:22:27 +0300 | [diff] [blame] | 588 | num = *credits; |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 589 | spin_unlock(&server->req_lock); |
Pavel Shilovsky | 2d86dbc | 2012-02-06 15:59:18 +0400 | [diff] [blame] | 590 | return num > 0; |
Pavel Shilovsky | fc40f9c | 2012-02-17 17:09:12 +0300 | [diff] [blame] | 591 | } |
| 592 | |
Pavel Shilovsky | 4527578 | 2012-05-17 17:53:29 +0400 | [diff] [blame] | 593 | static inline void |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 594 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
| 595 | const int optype) |
Pavel Shilovsky | 4527578 | 2012-05-17 17:53:29 +0400 | [diff] [blame] | 596 | { |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 597 | server->ops->add_credits(server, add, optype); |
Pavel Shilovsky | 4527578 | 2012-05-17 17:53:29 +0400 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | static inline void |
| 601 | set_credits(struct TCP_Server_Info *server, const int val) |
| 602 | { |
| 603 | server->ops->set_credits(server, val); |
| 604 | } |
| 605 | |
Pavel Shilovsky | 8825736 | 2012-05-23 14:01:59 +0400 | [diff] [blame] | 606 | static inline __u64 |
| 607 | get_next_mid(struct TCP_Server_Info *server) |
| 608 | { |
| 609 | return server->ops->get_next_mid(server); |
| 610 | } |
| 611 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | /* |
Pavel Shilovsky | 24985c5 | 2012-09-18 16:20:28 -0700 | [diff] [blame] | 613 | * When the server supports very large reads and writes via POSIX extensions, |
| 614 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not |
| 615 | * including the RFC1001 length. |
| 616 | * |
| 617 | * Note that this might make for "interesting" allocation problems during |
| 618 | * writeback however as we have to allocate an array of pointers for the |
| 619 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. |
| 620 | * |
| 621 | * For reads, there is a similar problem as we need to allocate an array |
| 622 | * of kvecs to handle the receive, though that should only need to be done |
| 623 | * once. |
| 624 | */ |
| 625 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) |
| 626 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) |
| 627 | |
| 628 | /* |
| 629 | * When the server doesn't allow large posix writes, only allow a rsize/wsize |
| 630 | * of 2^17-1 minus the size of the call header. That allows for a read or |
| 631 | * write up to the maximum size described by RFC1002. |
| 632 | */ |
| 633 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) |
| 634 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) |
| 635 | |
| 636 | /* |
| 637 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 |
| 638 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill |
| 639 | * a single wsize request with a single call. |
| 640 | */ |
| 641 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
| 642 | |
| 643 | /* |
| 644 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to |
| 645 | * those values when posix extensions aren't in force. In actuality here, we |
| 646 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem |
| 647 | * to be ok with the extra byte even though Windows doesn't send writes that |
| 648 | * are that large. |
| 649 | * |
| 650 | * Citation: |
| 651 | * |
| 652 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
| 653 | */ |
| 654 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) |
| 655 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) |
| 656 | |
| 657 | /* |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 658 | * Macros to allow the TCP_Server_Info->net field and related code to drop out |
| 659 | * when CONFIG_NET_NS isn't set. |
| 660 | */ |
| 661 | |
| 662 | #ifdef CONFIG_NET_NS |
| 663 | |
| 664 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) |
| 665 | { |
| 666 | return srv->net; |
| 667 | } |
| 668 | |
| 669 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) |
| 670 | { |
| 671 | srv->net = net; |
| 672 | } |
| 673 | |
| 674 | #else |
| 675 | |
| 676 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) |
| 677 | { |
| 678 | return &init_net; |
| 679 | } |
| 680 | |
| 681 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) |
| 682 | { |
| 683 | } |
| 684 | |
| 685 | #endif |
| 686 | |
| 687 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | * Session structure. One of these for each uid session with a particular host |
| 689 | */ |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 690 | struct cifs_ses { |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 691 | struct list_head smb_ses_list; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 692 | struct list_head tcon_list; |
Steve French | d7b619c | 2010-02-25 05:36:46 +0000 | [diff] [blame] | 693 | struct mutex session_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | struct TCP_Server_Info *server; /* pointer to server info */ |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 695 | int ses_count; /* reference counter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | enum statusEnum status; |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 697 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
| 699 | __u16 flags; |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 700 | __u16 vcnum; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 701 | char *serverOS; /* name of operating system underlying server */ |
| 702 | char *serverNOS; /* name of network operating system of server */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | char *serverDomain; /* security realm of server */ |
Pavel Shilovsky | 286170a | 2012-05-25 10:43:58 +0400 | [diff] [blame] | 704 | __u64 Suid; /* remote smb uid */ |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 705 | uid_t linux_uid; /* overriding owner of files on the mount */ |
| 706 | uid_t cred_uid; /* owner of credentials */ |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 707 | unsigned int capabilities; |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 708 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 709 | TCP names - will ipv6 and sctp addresses fit? */ |
Steve French | 34c8790 | 2011-03-01 05:02:57 +0000 | [diff] [blame] | 710 | char *user_name; /* must not be null except during init of sess |
| 711 | and after mount option parsing we fill it */ |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 712 | char *domainName; |
| 713 | char *password; |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 714 | struct session_key auth_key; |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 715 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 716 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
Pavel Shilovsky | 5478f9b | 2011-12-27 16:22:00 +0400 | [diff] [blame] | 717 | #ifdef CONFIG_CIFS_SMB2 |
| 718 | __u16 session_flags; |
| 719 | #endif /* CONFIG_CIFS_SMB2 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | }; |
Pavel Shilovsky | 233839b | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 721 | |
Steve French | 9ac00b7 | 2006-09-30 04:13:17 +0000 | [diff] [blame] | 722 | /* no more than one of the following three session flags may be set */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | #define CIFS_SES_NT4 1 |
Steve French | 9ac00b7 | 2006-09-30 04:13:17 +0000 | [diff] [blame] | 724 | #define CIFS_SES_OS2 2 |
| 725 | #define CIFS_SES_W9X 4 |
| 726 | /* following flag is set for old servers such as OS2 (and Win95?) |
| 727 | which do not negotiate NTLM or POSIX dialects, but instead |
| 728 | negotiate one of the older LANMAN dialects */ |
| 729 | #define CIFS_SES_LANMAN 8 |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 730 | |
| 731 | static inline bool |
| 732 | cap_unix(struct cifs_ses *ses) |
| 733 | { |
| 734 | return ses->server->vals->cap_unix & ses->capabilities; |
| 735 | } |
| 736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | /* |
| 738 | * there is one of these for each connection to a resource on a particular |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 739 | * session |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | */ |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 741 | struct cifs_tcon { |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 742 | struct list_head tcon_list; |
| 743 | int tc_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | struct list_head openFileList; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 745 | struct cifs_ses *ses; /* pointer to session associated with */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 746 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | char *nativeFileSystem; |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 748 | char *password; /* for share-level security */ |
Pavel Shilovsky | faaf946 | 2011-12-27 16:04:00 +0400 | [diff] [blame] | 749 | __u32 tid; /* The 4 byte tree id */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | __u16 Flags; /* optional support bits */ |
| 751 | enum statusEnum tidStatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | #ifdef CONFIG_CIFS_STATS |
| 753 | atomic_t num_smbs_sent; |
Pavel Shilovsky | 44c5818 | 2012-05-28 14:16:31 +0400 | [diff] [blame] | 754 | union { |
| 755 | struct { |
| 756 | atomic_t num_writes; |
| 757 | atomic_t num_reads; |
| 758 | atomic_t num_flushes; |
| 759 | atomic_t num_oplock_brks; |
| 760 | atomic_t num_opens; |
| 761 | atomic_t num_closes; |
| 762 | atomic_t num_deletes; |
| 763 | atomic_t num_mkdirs; |
| 764 | atomic_t num_posixopens; |
| 765 | atomic_t num_posixmkdirs; |
| 766 | atomic_t num_rmdirs; |
| 767 | atomic_t num_renames; |
| 768 | atomic_t num_t2renames; |
| 769 | atomic_t num_ffirst; |
| 770 | atomic_t num_fnext; |
| 771 | atomic_t num_fclose; |
| 772 | atomic_t num_hardlinks; |
| 773 | atomic_t num_symlinks; |
| 774 | atomic_t num_locks; |
| 775 | atomic_t num_acl_get; |
| 776 | atomic_t num_acl_set; |
| 777 | } cifs_stats; |
Pavel Shilovsky | d60622e | 2012-05-28 15:19:39 +0400 | [diff] [blame] | 778 | #ifdef CONFIG_CIFS_SMB2 |
| 779 | struct { |
| 780 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; |
| 781 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; |
| 782 | } smb2_stats; |
| 783 | #endif /* CONFIG_CIFS_SMB2 */ |
Pavel Shilovsky | 44c5818 | 2012-05-28 14:16:31 +0400 | [diff] [blame] | 784 | } stats; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 785 | #ifdef CONFIG_CIFS_STATS2 |
| 786 | unsigned long long time_writes; |
| 787 | unsigned long long time_reads; |
| 788 | unsigned long long time_opens; |
| 789 | unsigned long long time_deletes; |
| 790 | unsigned long long time_closes; |
| 791 | unsigned long long time_mkdirs; |
| 792 | unsigned long long time_rmdirs; |
| 793 | unsigned long long time_renames; |
| 794 | unsigned long long time_t2renames; |
| 795 | unsigned long long time_ffirst; |
| 796 | unsigned long long time_fnext; |
| 797 | unsigned long long time_fclose; |
| 798 | #endif /* CONFIG_CIFS_STATS2 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | __u64 bytes_read; |
| 800 | __u64 bytes_written; |
| 801 | spinlock_t stat_lock; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 802 | #endif /* CONFIG_CIFS_STATS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 804 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 806 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
| 807 | bool retry:1; |
| 808 | bool nocase:1; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 809 | bool seal:1; /* transport encryption for this mounted share */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 810 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 811 | for this mount even if server would support */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 812 | bool local_lease:1; /* check leases (only) on local system not remote */ |
Steve French | 64cc2c6 | 2009-03-04 19:54:08 +0000 | [diff] [blame] | 813 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 814 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
Pavel Shilovsky | faaf946 | 2011-12-27 16:04:00 +0400 | [diff] [blame] | 815 | #ifdef CONFIG_CIFS_SMB2 |
| 816 | bool print:1; /* set if connection to printer share */ |
| 817 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ |
| 818 | __u32 capabilities; |
| 819 | __u32 share_flags; |
| 820 | __u32 maximal_access; |
| 821 | __u32 vol_serial_number; |
| 822 | __le64 vol_create_time; |
| 823 | #endif /* CONFIG_CIFS_SMB2 */ |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 824 | #ifdef CONFIG_CIFS_FSCACHE |
| 825 | u64 resource_id; /* server resource id */ |
| 826 | struct fscache_cookie *fscache; /* cookie for share */ |
| 827 | #endif |
Pavel Shilovsky | 233839b | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 828 | struct list_head pending_opens; /* list of incomplete opens */ |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 829 | /* BB add field for back pointer to sb struct(s)? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | }; |
| 831 | |
| 832 | /* |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 833 | * This is a refcounted and timestamped container for a tcon pointer. The |
| 834 | * container holds a tcon reference. It is considered safe to free one of |
| 835 | * these when the tl_count goes to 0. The tl_time is the time of the last |
| 836 | * "get" on the container. |
| 837 | */ |
| 838 | struct tcon_link { |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 839 | struct rb_node tl_rbnode; |
| 840 | uid_t tl_uid; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 841 | unsigned long tl_flags; |
| 842 | #define TCON_LINK_MASTER 0 |
| 843 | #define TCON_LINK_PENDING 1 |
| 844 | #define TCON_LINK_IN_TREE 2 |
| 845 | unsigned long tl_time; |
| 846 | atomic_t tl_count; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 847 | struct cifs_tcon *tl_tcon; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 848 | }; |
| 849 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 850 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 851 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 852 | static inline struct cifs_tcon * |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 853 | tlink_tcon(struct tcon_link *tlink) |
| 854 | { |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 855 | return tlink->tl_tcon; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 856 | } |
| 857 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 858 | extern void cifs_put_tlink(struct tcon_link *tlink); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 859 | |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 860 | static inline struct tcon_link * |
| 861 | cifs_get_tlink(struct tcon_link *tlink) |
| 862 | { |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 863 | if (tlink && !IS_ERR(tlink)) |
| 864 | atomic_inc(&tlink->tl_count); |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 865 | return tlink; |
| 866 | } |
| 867 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 868 | /* This function is always expected to succeed */ |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 869 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 870 | |
Pavel Shilovsky | 233839b | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 871 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
| 872 | |
| 873 | struct cifs_pending_open { |
| 874 | struct list_head olist; |
| 875 | struct tcon_link *tlink; |
| 876 | __u8 lease_key[16]; |
| 877 | __u32 oplock; |
| 878 | }; |
| 879 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 880 | /* |
Jeremy Allison | 7ee1af7 | 2006-08-02 21:56:33 +0000 | [diff] [blame] | 881 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
| 882 | * This is used to track byte stream locks on the file |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | */ |
| 884 | struct cifsLockInfo { |
Jeremy Allison | 7ee1af7 | 2006-08-02 21:56:33 +0000 | [diff] [blame] | 885 | struct list_head llist; /* pointer to next cifsLockInfo */ |
Pavel Shilovsky | 85160e0 | 2011-10-22 15:33:29 +0400 | [diff] [blame] | 886 | struct list_head blist; /* pointer to locks blocked on this */ |
| 887 | wait_queue_head_t block_q; |
Jeremy Allison | 7ee1af7 | 2006-08-02 21:56:33 +0000 | [diff] [blame] | 888 | __u64 offset; |
| 889 | __u64 length; |
Pavel Shilovsky | 03776f4 | 2010-08-17 11:26:00 +0400 | [diff] [blame] | 890 | __u32 pid; |
Pavel Shilovsky | 04a6aa8 | 2012-02-28 14:16:55 +0300 | [diff] [blame] | 891 | __u32 type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | }; |
| 893 | |
| 894 | /* |
| 895 | * One of these for each open instance of a file |
| 896 | */ |
| 897 | struct cifs_search_info { |
| 898 | loff_t index_of_last_entry; |
| 899 | __u16 entries_in_buffer; |
| 900 | __u16 info_level; |
| 901 | __u32 resume_key; |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 902 | char *ntwrk_buf_start; |
| 903 | char *srch_entries_start; |
Steve French | 0752f15 | 2008-10-07 20:03:33 +0000 | [diff] [blame] | 904 | char *last_entry; |
Christoph Hellwig | eaf35b1 | 2011-07-16 15:24:37 -0400 | [diff] [blame] | 905 | const char *presume_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | unsigned int resume_name_len; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 907 | bool endOfSearch:1; |
| 908 | bool emptyDir:1; |
| 909 | bool unicode:1; |
| 910 | bool smallBuf:1; /* so we know which buf_release function to call */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | }; |
| 912 | |
Pavel Shilovsky | 4b4de76 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 913 | struct cifs_fid { |
| 914 | __u16 netfid; |
Pavel Shilovsky | f0df737 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 915 | #ifdef CONFIG_CIFS_SMB2 |
| 916 | __u64 persistent_fid; /* persist file id for smb2 */ |
| 917 | __u64 volatile_fid; /* volatile file id for smb2 */ |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 918 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
Pavel Shilovsky | f0df737 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 919 | #endif |
Pavel Shilovsky | 233839b | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 920 | struct cifs_pending_open *pending_open; |
Pavel Shilovsky | 4b4de76 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 921 | }; |
| 922 | |
Pavel Shilovsky | f45d341 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 923 | struct cifs_fid_locks { |
| 924 | struct list_head llist; |
| 925 | struct cifsFileInfo *cfile; /* fid that owns locks */ |
| 926 | struct list_head locks; /* locks held by fid above */ |
| 927 | }; |
| 928 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | struct cifsFileInfo { |
| 930 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
| 931 | struct list_head flist; /* next fid (file instance) for this inode */ |
Pavel Shilovsky | f45d341 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 932 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | unsigned int uid; /* allows finding which FileInfo structure */ |
| 934 | __u32 pid; /* process id who opened file */ |
Pavel Shilovsky | 4b4de76 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 935 | struct cifs_fid fid; /* file id from remote */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | /* BB add lock scope info here if needed */ ; |
| 937 | /* lock scope id (0 if none) */ |
Jeff Layton | a5e18bc | 2010-10-11 15:07:18 -0400 | [diff] [blame] | 938 | struct dentry *dentry; |
Jeff Layton | 1588617 | 2010-10-15 15:33:59 -0400 | [diff] [blame] | 939 | unsigned int f_flags; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 940 | struct tcon_link *tlink; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 941 | bool invalidHandle:1; /* file closed via session abend */ |
Jeff Layton | 3bc303c | 2009-09-21 06:47:50 -0400 | [diff] [blame] | 942 | bool oplock_break_cancelled:1; |
Steve French | 6c0f621 | 2010-10-23 16:51:40 +0000 | [diff] [blame] | 943 | int count; /* refcount protected by cifs_file_list_lock */ |
Steve French | a6ce493 | 2009-04-09 01:14:32 +0000 | [diff] [blame] | 944 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | struct cifs_search_info srch_inf; |
Tejun Heo | 9b64697 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 946 | struct work_struct oplock_break; /* work for oplock breaks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | }; |
| 948 | |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 949 | struct cifs_io_parms { |
| 950 | __u16 netfid; |
Pavel Shilovsky | 09a4707 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 951 | #ifdef CONFIG_CIFS_SMB2 |
| 952 | __u64 persistent_fid; /* persist file id for smb2 */ |
| 953 | __u64 volatile_fid; /* volatile file id for smb2 */ |
| 954 | #endif |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 955 | __u32 pid; |
| 956 | __u64 offset; |
| 957 | unsigned int length; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 958 | struct cifs_tcon *tcon; |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 959 | }; |
| 960 | |
Pavel Shilovsky | 09a4707 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 961 | struct cifs_readdata; |
| 962 | |
| 963 | /* asynchronous read support */ |
| 964 | struct cifs_readdata { |
| 965 | struct kref refcount; |
| 966 | struct list_head list; |
| 967 | struct completion done; |
| 968 | struct cifsFileInfo *cfile; |
| 969 | struct address_space *mapping; |
| 970 | __u64 offset; |
| 971 | unsigned int bytes; |
| 972 | pid_t pid; |
| 973 | int result; |
Pavel Shilovsky | 09a4707 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 974 | struct work_struct work; |
Jeff Layton | 8321fec | 2012-09-19 06:22:32 -0700 | [diff] [blame] | 975 | int (*read_into_pages)(struct TCP_Server_Info *server, |
| 976 | struct cifs_readdata *rdata, |
| 977 | unsigned int len); |
Jeff Layton | 5819575 | 2012-09-19 06:22:34 -0700 | [diff] [blame] | 978 | struct kvec iov; |
Jeff Layton | 8321fec | 2012-09-19 06:22:32 -0700 | [diff] [blame] | 979 | unsigned int pagesz; |
| 980 | unsigned int tailsz; |
Jeff Layton | c5fab6f | 2012-09-19 06:22:30 -0700 | [diff] [blame] | 981 | unsigned int nr_pages; |
| 982 | struct page *pages[]; |
Pavel Shilovsky | 09a4707 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 983 | }; |
| 984 | |
Pavel Shilovsky | 3331914 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 985 | struct cifs_writedata; |
| 986 | |
| 987 | /* asynchronous write support */ |
| 988 | struct cifs_writedata { |
| 989 | struct kref refcount; |
| 990 | struct list_head list; |
| 991 | struct completion done; |
| 992 | enum writeback_sync_modes sync_mode; |
| 993 | struct work_struct work; |
| 994 | struct cifsFileInfo *cfile; |
| 995 | __u64 offset; |
| 996 | pid_t pid; |
| 997 | unsigned int bytes; |
| 998 | int result; |
Jeff Layton | eddb079 | 2012-09-18 16:20:35 -0700 | [diff] [blame] | 999 | unsigned int pagesz; |
| 1000 | unsigned int tailsz; |
Pavel Shilovsky | 3331914 | 2012-09-18 16:20:29 -0700 | [diff] [blame] | 1001 | unsigned int nr_pages; |
| 1002 | struct page *pages[1]; |
| 1003 | }; |
| 1004 | |
Jeff Layton | 5f6dbc9 | 2010-10-15 15:34:06 -0400 | [diff] [blame] | 1005 | /* |
| 1006 | * Take a reference on the file private data. Must be called with |
| 1007 | * cifs_file_list_lock held. |
| 1008 | */ |
Jeff Layton | 764a1b1 | 2012-07-25 14:59:54 -0400 | [diff] [blame] | 1009 | static inline void |
| 1010 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 1011 | { |
Jeff Layton | 5f6dbc9 | 2010-10-15 15:34:06 -0400 | [diff] [blame] | 1012 | ++cifs_file->count; |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 1013 | } |
| 1014 | |
Jeff Layton | 764a1b1 | 2012-07-25 14:59:54 -0400 | [diff] [blame] | 1015 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
Jeff Layton | b33879a | 2010-10-15 15:34:04 -0400 | [diff] [blame] | 1016 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 1017 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | /* |
| 1019 | * One of these for each file inode |
| 1020 | */ |
| 1021 | |
| 1022 | struct cifsInodeInfo { |
Pavel Shilovsky | d59dad2 | 2011-09-22 09:53:59 +0400 | [diff] [blame] | 1023 | bool can_cache_brlcks; |
Pavel Shilovsky | f45d341 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 1024 | struct list_head llist; /* locks helb by this inode */ |
Pavel Shilovsky | 1b4b55a | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 1025 | struct rw_semaphore lock_sem; /* protect the fields above */ |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 1026 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | struct list_head openFileList; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
Jeff Layton | aae62fd | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 1029 | bool clientCanCacheRead; /* read oplock */ |
| 1030 | bool clientCanCacheAll; /* read and writebehind oplock */ |
| 1031 | bool delete_pending; /* DELETE_ON_CLOSE is set */ |
| 1032 | bool invalid_mapping; /* pagecache is invalid */ |
Pavel Shilovsky | c299dd0 | 2012-12-06 22:07:52 +0400 | [diff] [blame] | 1033 | bool leave_pages_clean; /* protected by i_mutex, not set pages dirty */ |
Jeff Layton | aae62fd | 2011-01-20 13:36:50 -0500 | [diff] [blame] | 1034 | unsigned long time; /* jiffies of last update of inode */ |
Jeff Layton | 597b027 | 2012-03-23 14:40:56 -0400 | [diff] [blame] | 1035 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1036 | u64 uniqueid; /* server inode number */ |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 1037 | u64 createtime; /* creation time on server */ |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 1038 | #ifdef CONFIG_CIFS_SMB2 |
| 1039 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
| 1040 | #endif |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 1041 | #ifdef CONFIG_CIFS_FSCACHE |
| 1042 | struct fscache_cookie *fscache; |
| 1043 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | struct inode vfs_inode; |
| 1045 | }; |
| 1046 | |
| 1047 | static inline struct cifsInodeInfo * |
| 1048 | CIFS_I(struct inode *inode) |
| 1049 | { |
| 1050 | return container_of(inode, struct cifsInodeInfo, vfs_inode); |
| 1051 | } |
| 1052 | |
| 1053 | static inline struct cifs_sb_info * |
| 1054 | CIFS_SB(struct super_block *sb) |
| 1055 | { |
| 1056 | return sb->s_fs_info; |
| 1057 | } |
| 1058 | |
Steve French | ab2f218 | 2005-09-15 20:44:50 -0700 | [diff] [blame] | 1059 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 1060 | { |
| 1061 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
| 1062 | return '/'; |
| 1063 | else |
| 1064 | return '\\'; |
| 1065 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 1067 | static inline void |
| 1068 | convert_delimiter(char *path, char delim) |
| 1069 | { |
Steve French | 1cc9bd6 | 2012-11-29 18:07:51 -0600 | [diff] [blame] | 1070 | char old_delim, *pos; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 1071 | |
| 1072 | if (delim == '/') |
| 1073 | old_delim = '\\'; |
| 1074 | else |
| 1075 | old_delim = '/'; |
| 1076 | |
Steve French | 1cc9bd6 | 2012-11-29 18:07:51 -0600 | [diff] [blame] | 1077 | pos = path; |
| 1078 | while ((pos = strchr(pos, old_delim))) |
| 1079 | *pos = delim; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
Steve French | a454434 | 2005-08-24 13:59:35 -0700 | [diff] [blame] | 1082 | #ifdef CONFIG_CIFS_STATS |
| 1083 | #define cifs_stats_inc atomic_inc |
| 1084 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1085 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
Steve French | a454434 | 2005-08-24 13:59:35 -0700 | [diff] [blame] | 1086 | unsigned int bytes) |
| 1087 | { |
| 1088 | if (bytes) { |
| 1089 | spin_lock(&tcon->stat_lock); |
| 1090 | tcon->bytes_written += bytes; |
| 1091 | spin_unlock(&tcon->stat_lock); |
| 1092 | } |
| 1093 | } |
| 1094 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1095 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
Steve French | a454434 | 2005-08-24 13:59:35 -0700 | [diff] [blame] | 1096 | unsigned int bytes) |
| 1097 | { |
| 1098 | spin_lock(&tcon->stat_lock); |
| 1099 | tcon->bytes_read += bytes; |
| 1100 | spin_unlock(&tcon->stat_lock); |
| 1101 | } |
| 1102 | #else |
| 1103 | |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 1104 | #define cifs_stats_inc(field) do {} while (0) |
| 1105 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) |
| 1106 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) |
Steve French | a454434 | 2005-08-24 13:59:35 -0700 | [diff] [blame] | 1107 | |
| 1108 | #endif |
| 1109 | |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 1110 | |
| 1111 | /* |
Jeff Layton | 44d22d8 | 2011-10-19 15:29:49 -0400 | [diff] [blame] | 1112 | * This is the prototype for the mid receive function. This function is for |
| 1113 | * receiving the rest of the SMB frame, starting with the WordCount (which is |
| 1114 | * just after the MID in struct smb_hdr). Note: |
| 1115 | * |
| 1116 | * - This will be called by cifsd, with no locks held. |
| 1117 | * - The mid will still be on the pending_mid_q. |
| 1118 | * - mid->resp_buf will point to the current buffer. |
| 1119 | * |
| 1120 | * Returns zero on a successful receive, or an error. The receive state in |
| 1121 | * the TCP_Server_Info will also be updated. |
| 1122 | */ |
| 1123 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, |
| 1124 | struct mid_q_entry *mid); |
| 1125 | |
| 1126 | /* |
| 1127 | * This is the prototype for the mid callback function. This is called once the |
| 1128 | * mid has been received off of the socket. When creating one, take special |
| 1129 | * care to avoid deadlocks. Things to bear in mind: |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 1130 | * |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 1131 | * - it will be called by cifsd, with no locks held |
| 1132 | * - the mid will be removed from any lists |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 1133 | */ |
| 1134 | typedef void (mid_callback_t)(struct mid_q_entry *mid); |
| 1135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | /* one of these for every pending CIFS request to the server */ |
| 1137 | struct mid_q_entry { |
| 1138 | struct list_head qhead; /* mids waiting on reply from this server */ |
Pavel Shilovsky | 2dc7e1c | 2011-12-26 22:53:34 +0400 | [diff] [blame] | 1139 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
Pavel Shilovsky | 7c9421e | 2012-03-23 14:28:03 -0400 | [diff] [blame] | 1140 | __u64 mid; /* multiplex id */ |
| 1141 | __u32 pid; /* process id */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | __u32 sequence_number; /* for CIFS signing */ |
Steve French | 1047abc | 2005-10-11 19:58:06 -0700 | [diff] [blame] | 1143 | unsigned long when_alloc; /* when mid was created */ |
| 1144 | #ifdef CONFIG_CIFS_STATS2 |
| 1145 | unsigned long when_sent; /* time when smb send finished */ |
| 1146 | unsigned long when_received; /* when demux complete (taken off wire) */ |
| 1147 | #endif |
Jeff Layton | 44d22d8 | 2011-10-19 15:29:49 -0400 | [diff] [blame] | 1148 | mid_receive_t *receive; /* call receive callback */ |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 1149 | mid_callback_t *callback; /* call completion callback */ |
| 1150 | void *callback_data; /* general purpose pointer for callback */ |
Pavel Shilovsky | d4e4854 | 2012-03-23 14:28:02 -0400 | [diff] [blame] | 1151 | void *resp_buf; /* pointer to received SMB header */ |
Pavel Shilovsky | 7c9421e | 2012-03-23 14:28:03 -0400 | [diff] [blame] | 1152 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
| 1153 | __le16 command; /* smb command code */ |
| 1154 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1155 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
| 1156 | bool multiEnd:1; /* both received */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | }; |
| 1158 | |
Steve French | 789e666 | 2011-08-09 18:44:44 +0000 | [diff] [blame] | 1159 | /* Make code in transport.c a little cleaner by moving |
| 1160 | update of optional stats into function below */ |
| 1161 | #ifdef CONFIG_CIFS_STATS2 |
| 1162 | |
| 1163 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
| 1164 | { |
| 1165 | atomic_inc(&server->in_send); |
| 1166 | } |
| 1167 | |
| 1168 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) |
| 1169 | { |
| 1170 | atomic_dec(&server->in_send); |
| 1171 | } |
| 1172 | |
| 1173 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) |
| 1174 | { |
| 1175 | atomic_inc(&server->num_waiters); |
| 1176 | } |
| 1177 | |
| 1178 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) |
| 1179 | { |
| 1180 | atomic_dec(&server->num_waiters); |
| 1181 | } |
| 1182 | |
| 1183 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
| 1184 | { |
| 1185 | mid->when_sent = jiffies; |
| 1186 | } |
| 1187 | #else |
| 1188 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
| 1189 | { |
| 1190 | } |
| 1191 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) |
| 1192 | { |
| 1193 | } |
| 1194 | |
| 1195 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) |
| 1196 | { |
| 1197 | } |
| 1198 | |
| 1199 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) |
| 1200 | { |
| 1201 | } |
| 1202 | |
| 1203 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
| 1204 | { |
| 1205 | } |
| 1206 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 1208 | /* for pending dnotify requests */ |
| 1209 | struct dir_notify_req { |
Steve French | 13cd4b7 | 2010-10-07 18:46:32 +0000 | [diff] [blame] | 1210 | struct list_head lhead; |
| 1211 | __le16 Pid; |
| 1212 | __le16 PidHigh; |
| 1213 | __u16 Mid; |
| 1214 | __u16 Tid; |
| 1215 | __u16 Uid; |
| 1216 | __u16 netfid; |
| 1217 | __u32 filter; /* CompletionFilter (for multishot) */ |
| 1218 | int multishot; |
| 1219 | struct file *pfile; |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 1220 | }; |
| 1221 | |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1222 | struct dfs_info3_param { |
| 1223 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ |
Igor Mammedov | 8aad018 | 2008-02-15 18:21:49 +0000 | [diff] [blame] | 1224 | int path_consumed; |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1225 | int server_type; |
| 1226 | int ref_flag; |
| 1227 | char *path_name; |
| 1228 | char *node_name; |
| 1229 | }; |
| 1230 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1231 | /* |
| 1232 | * common struct for holding inode info when searching for or updating an |
| 1233 | * inode with new info |
| 1234 | */ |
| 1235 | |
| 1236 | #define CIFS_FATTR_DFS_REFERRAL 0x1 |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 1237 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
| 1238 | #define CIFS_FATTR_NEED_REVAL 0x4 |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 1239 | #define CIFS_FATTR_INO_COLLISION 0x8 |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1240 | |
| 1241 | struct cifs_fattr { |
| 1242 | u32 cf_flags; |
| 1243 | u32 cf_cifsattrs; |
| 1244 | u64 cf_uniqueid; |
| 1245 | u64 cf_eof; |
| 1246 | u64 cf_bytes; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 1247 | u64 cf_createtime; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1248 | uid_t cf_uid; |
| 1249 | gid_t cf_gid; |
| 1250 | umode_t cf_mode; |
| 1251 | dev_t cf_rdev; |
| 1252 | unsigned int cf_nlink; |
| 1253 | unsigned int cf_dtype; |
| 1254 | struct timespec cf_atime; |
| 1255 | struct timespec cf_mtime; |
| 1256 | struct timespec cf_ctime; |
| 1257 | }; |
| 1258 | |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1259 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
| 1260 | { |
| 1261 | if (param) { |
| 1262 | kfree(param->path_name); |
| 1263 | kfree(param->node_name); |
| 1264 | kfree(param); |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | static inline void free_dfs_info_array(struct dfs_info3_param *param, |
| 1269 | int number_of_items) |
| 1270 | { |
| 1271 | int i; |
| 1272 | if ((number_of_items == 0) || (param == NULL)) |
| 1273 | return; |
| 1274 | for (i = 0; i < number_of_items; i++) { |
| 1275 | kfree(param[i].path_name); |
| 1276 | kfree(param[i].node_name); |
| 1277 | } |
| 1278 | kfree(param); |
| 1279 | } |
| 1280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | #define MID_FREE 0 |
| 1282 | #define MID_REQUEST_ALLOCATED 1 |
| 1283 | #define MID_REQUEST_SUBMITTED 2 |
| 1284 | #define MID_RESPONSE_RECEIVED 4 |
| 1285 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 1286 | #define MID_RESPONSE_MALFORMED 0x10 |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 1287 | #define MID_SHUTDOWN 0x20 |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 1288 | |
| 1289 | /* Types of response buffer returned from SendReceive2 */ |
| 1290 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ |
| 1291 | #define CIFS_SMALL_BUFFER 1 |
| 1292 | #define CIFS_LARGE_BUFFER 2 |
| 1293 | #define CIFS_IOVEC 4 /* array of response buffers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 1295 | /* Type of Request to SendReceive2 */ |
Jeff Layton | 7749981 | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1296 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
| 1297 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ |
| 1298 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 1299 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
| 1300 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ |
| 1301 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ |
| 1302 | |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 1303 | /* Type of request operation */ |
| 1304 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
| 1305 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ |
Pavel Shilovsky | ec2e452 | 2011-12-27 16:12:43 +0400 | [diff] [blame] | 1306 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
| 1307 | #define CIFS_OP_MASK 0x0380 /* mask request type */ |
Pavel Shilovsky | a891f0f | 2012-05-23 16:14:34 +0400 | [diff] [blame] | 1308 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1309 | /* Security Flags: indicate type of session setup needed */ |
| 1310 | #define CIFSSEC_MAY_SIGN 0x00001 |
| 1311 | #define CIFSSEC_MAY_NTLM 0x00002 |
| 1312 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
| 1313 | #define CIFSSEC_MAY_KRB5 0x00008 |
| 1314 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 1315 | #define CIFSSEC_MAY_LANMAN 0x00010 |
| 1316 | #define CIFSSEC_MAY_PLNTXT 0x00020 |
Steve French | 516897a | 2007-10-12 19:24:06 +0000 | [diff] [blame] | 1317 | #else |
| 1318 | #define CIFSSEC_MAY_LANMAN 0 |
| 1319 | #define CIFSSEC_MAY_PLNTXT 0 |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1320 | #endif /* weak passwords */ |
| 1321 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1322 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
Steve French | 5815449d | 2006-02-14 01:36:20 +0000 | [diff] [blame] | 1323 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1324 | #define CIFSSEC_MUST_SIGN 0x01001 |
| 1325 | /* note that only one of the following can be set so the |
| 1326 | result of setting MUST flags more than once will be to |
| 1327 | require use of the stronger protocol */ |
| 1328 | #define CIFSSEC_MUST_NTLM 0x02002 |
| 1329 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
| 1330 | #define CIFSSEC_MUST_KRB5 0x08008 |
| 1331 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 1332 | #define CIFSSEC_MUST_LANMAN 0x10010 |
| 1333 | #define CIFSSEC_MUST_PLNTXT 0x20020 |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 1334 | #ifdef CONFIG_CIFS_UPCALL |
Chuck Ebbert | 20d1752 | 2009-09-15 01:53:21 -0400 | [diff] [blame] | 1335 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 1336 | #else |
Chuck Ebbert | 20d1752 | 2009-09-15 01:53:21 -0400 | [diff] [blame] | 1337 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
Steve French | 016ec75 | 2007-10-16 18:10:10 +0000 | [diff] [blame] | 1338 | #endif /* UPCALL */ |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 1339 | #else /* do not allow weak pw hash */ |
Steve French | 88a4412 | 2012-01-18 17:13:47 -0600 | [diff] [blame] | 1340 | #define CIFSSEC_MUST_LANMAN 0 |
| 1341 | #define CIFSSEC_MUST_PLNTXT 0 |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 1342 | #ifdef CONFIG_CIFS_UPCALL |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1343 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 1344 | #else |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1345 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
Steve French | 016ec75 | 2007-10-16 18:10:10 +0000 | [diff] [blame] | 1346 | #endif /* UPCALL */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1347 | #endif /* WEAK_PW_HASH */ |
| 1348 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1349 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1350 | |
Steve French | 81bcd8b | 2012-11-25 00:07:44 -0600 | [diff] [blame] | 1351 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMSSP) |
Shirish Pargaonkar | ef571ca | 2008-07-24 15:56:05 +0000 | [diff] [blame] | 1352 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1353 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | /* |
| 1355 | ***************************************************************** |
| 1356 | * All constants go here |
| 1357 | ***************************************************************** |
| 1358 | */ |
| 1359 | |
| 1360 | #define UID_HASH (16) |
| 1361 | |
| 1362 | /* |
| 1363 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the |
| 1364 | * following to be declared. |
| 1365 | */ |
| 1366 | |
| 1367 | /**************************************************************************** |
| 1368 | * Locking notes. All updates to global variables and lists should be |
| 1369 | * protected by spinlocks or semaphores. |
| 1370 | * |
| 1371 | * Spinlocks |
| 1372 | * --------- |
| 1373 | * GlobalMid_Lock protects: |
| 1374 | * list operations on pending_mid_q and oplockQ |
| 1375 | * updates to XID counters, multiplex id and SMB sequence numbers |
Suresh Jayaraman | 6573e9b | 2010-10-18 23:52:18 +0530 | [diff] [blame] | 1376 | * cifs_file_list_lock protects: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | * list operations on tcp and SMB session lists and tCon lists |
| 1378 | * f_owner.lock protects certain per file struct operations |
| 1379 | * mapping->page_lock protects certain per page operations |
| 1380 | * |
| 1381 | * Semaphores |
| 1382 | * ---------- |
| 1383 | * sesSem operations on smb session |
| 1384 | * tconSem operations on tree connection |
Steve French | d38d8c7 | 2007-06-28 19:44:13 +0000 | [diff] [blame] | 1385 | * fh_sem file handle reconnection operations |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | * |
| 1387 | ****************************************************************************/ |
| 1388 | |
| 1389 | #ifdef DECLARE_GLOBALS_HERE |
| 1390 | #define GLOBAL_EXTERN |
| 1391 | #else |
| 1392 | #define GLOBAL_EXTERN extern |
| 1393 | #endif |
| 1394 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1395 | /* |
| 1396 | * the list of TCP_Server_Info structures, ie each of the sockets |
Steve French | fb39601 | 2008-11-13 20:04:07 +0000 | [diff] [blame] | 1397 | * connecting our client to a distinct server (ip address), is |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1398 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
Steve French | fb39601 | 2008-11-13 20:04:07 +0000 | [diff] [blame] | 1399 | * sessions (and from that the tree connections) can be found |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1400 | * by iterating over cifs_tcp_ses_list |
| 1401 | */ |
| 1402 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; |
| 1403 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1404 | /* |
| 1405 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per |
| 1406 | * tcp session, and the list of tcon's per smb session. It also protects |
| 1407 | * the reference counters for the server, smb session, and tcon. Finally, |
| 1408 | * changes to the tcon->tidStatus should be done while holding this lock. |
| 1409 | */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1410 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
Steve French | ddb4cbf | 2008-11-20 20:00:44 +0000 | [diff] [blame] | 1411 | |
| 1412 | /* |
| 1413 | * This lock protects the cifs_file->llist and cifs_file->flist |
| 1414 | * list operations, and updates to some flags (cifs_file->invalidHandle) |
| 1415 | * It will be moved to either use the tcon->stat_lock or equivalent later. |
| 1416 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then |
| 1417 | * the cifs_tcp_ses_lock must be grabbed first and released last. |
| 1418 | */ |
Jeff Layton | 4477288 | 2010-10-15 15:34:03 -0400 | [diff] [blame] | 1419 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1421 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1422 | /* Outstanding dir notify requests */ |
| 1423 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; |
| 1424 | /* DirNotify response queue */ |
| 1425 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1426 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 1427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | /* |
| 1429 | * Global transaction id (XID) information |
| 1430 | */ |
| 1431 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 1432 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 1434 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
| 1435 | /* on midQ entries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | /* |
| 1437 | * Global counters, updated atomically |
| 1438 | */ |
| 1439 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; |
| 1440 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; |
| 1441 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; |
| 1442 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; |
| 1443 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; |
| 1444 | |
Steve French | aaa9bbe | 2008-05-23 17:38:32 +0000 | [diff] [blame] | 1445 | /* Various Debug counters */ |
Steve French | 4498eed5 | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 1446 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
| 1447 | #ifdef CONFIG_CIFS_STATS2 |
| 1448 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ |
| 1449 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; |
| 1450 | #endif |
| 1451 | GLOBAL_EXTERN atomic_t smBufAllocCount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | GLOBAL_EXTERN atomic_t midCount; |
| 1453 | |
| 1454 | /* Misc globals */ |
Jeff Layton | 5e500ed | 2012-05-16 07:13:17 -0400 | [diff] [blame] | 1455 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 1457 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | with more secure ntlmssp2 challenge/resp */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
| 1461 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ |
| 1462 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ |
| 1463 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ |
| 1464 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ |
| 1465 | |
Shirish Pargaonkar | 21fed0d | 2011-08-09 14:30:48 -0500 | [diff] [blame] | 1466 | #ifdef CONFIG_CIFS_ACL |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1467 | GLOBAL_EXTERN struct rb_root uidtree; |
| 1468 | GLOBAL_EXTERN struct rb_root gidtree; |
| 1469 | GLOBAL_EXTERN spinlock_t siduidlock; |
| 1470 | GLOBAL_EXTERN spinlock_t sidgidlock; |
Shirish Pargaonkar | 21fed0d | 2011-08-09 14:30:48 -0500 | [diff] [blame] | 1471 | GLOBAL_EXTERN struct rb_root siduidtree; |
| 1472 | GLOBAL_EXTERN struct rb_root sidgidtree; |
| 1473 | GLOBAL_EXTERN spinlock_t uidsidlock; |
| 1474 | GLOBAL_EXTERN spinlock_t gidsidlock; |
| 1475 | #endif /* CONFIG_CIFS_ACL */ |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1476 | |
Tejun Heo | 9b64697 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 1477 | void cifs_oplock_break(struct work_struct *work); |
Linus Torvalds | 3b7433b | 2010-08-07 12:42:58 -0700 | [diff] [blame] | 1478 | |
Jeff Layton | 3bc303c | 2009-09-21 06:47:50 -0400 | [diff] [blame] | 1479 | extern const struct slow_work_ops cifs_oplock_break_ops; |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1480 | extern struct workqueue_struct *cifsiod_wq; |
Suresh Jayaraman | abd2e44 | 2010-06-22 20:52:50 +0530 | [diff] [blame] | 1481 | |
Pavel Shilovsky | 2dc7e1c | 2011-12-26 22:53:34 +0400 | [diff] [blame] | 1482 | extern mempool_t *cifs_mid_poolp; |
| 1483 | |
Jeff Layton | 23db65f | 2012-05-15 12:20:51 -0400 | [diff] [blame] | 1484 | /* Operations for different SMB versions */ |
| 1485 | #define SMB1_VERSION_STRING "1.0" |
| 1486 | extern struct smb_version_operations smb1_operations; |
| 1487 | extern struct smb_version_values smb1_values; |
Steve French | e4aa25e | 2012-10-01 12:26:22 -0500 | [diff] [blame] | 1488 | #define SMB20_VERSION_STRING "2.0" |
| 1489 | /*extern struct smb_version_operations smb20_operations; */ /* not needed yet */ |
| 1490 | extern struct smb_version_values smb20_values; |
Steve French | 1080ef7 | 2011-02-24 18:07:19 +0000 | [diff] [blame] | 1491 | #define SMB21_VERSION_STRING "2.1" |
| 1492 | extern struct smb_version_operations smb21_operations; |
| 1493 | extern struct smb_version_values smb21_values; |
Steve French | e4aa25e | 2012-10-01 12:26:22 -0500 | [diff] [blame] | 1494 | #define SMB30_VERSION_STRING "3.0" |
Steve French | 38107d4 | 2012-12-08 22:08:06 -0600 | [diff] [blame] | 1495 | extern struct smb_version_operations smb30_operations; |
Steve French | e4aa25e | 2012-10-01 12:26:22 -0500 | [diff] [blame] | 1496 | extern struct smb_version_values smb30_values; |
Suresh Jayaraman | abd2e44 | 2010-06-22 20:52:50 +0530 | [diff] [blame] | 1497 | #endif /* _CIFS_GLOB_H */ |