fs/cifs/cifsglob.h

   1 /*
   2  *   fs/cifs/cifsglob.h
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2002,2008
   5  *   Author(s): Steve French (sfrench@us.ibm.com)
   6  *              Jeremy Allison (jra@samba.org)
   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.
  17  *
  18  */
  19 #ifndef _CIFS_GLOB_H
  20 #define _CIFS_GLOB_H
  21
  22 #include <linux/in.h>
  23 #include <linux/in6.h>
  24 #include <linux/slab.h>
  25 #include <linux/workqueue.h>
  26 #include "cifs_fs_sb.h"
  27 #include "cifsacl.h"
  28 #include <crypto/internal/hash.h>
  29 #include <linux/scatterlist.h>
  30
  31 /*
  32  * The sizes of various internal tables and strings
  33  */
  34 #define MAX_UID_INFO 16
  35 #define MAX_SES_INFO 2
  36 #define MAX_TCON_INFO 4
  37
  38 #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
  39 #define MAX_SERVER_SIZE 15
  40 #define MAX_SHARE_SIZE 80
  41 #define MAX_USERNAME_SIZE 256   /* reasonable maximum for current servers */
  42 #define MAX_PASSWORD_SIZE 512   /* max for windows seems to be 256 wide chars */
  43
  44 #define CIFS_MIN_RCV_POOL 4
  45
  46 #define MAX_REOPEN_ATT  5 /* these many maximum attempts to reopen a file */
  47 /*
  48  * default attribute cache timeout (jiffies)
  49  */
  50 #define CIFS_DEF_ACTIMEO (1 * HZ)
  51
  52 /*
  53  * max attribute cache timeout (jiffies) - 2^30
  54  */
  55 #define CIFS_MAX_ACTIMEO (1 << 30)
  56
  57 /*
  58  * MAX_REQ is the maximum number of requests that WE will send
  59  * on one socket concurrently.
  60  */
  61 #define CIFS_MAX_REQ 32767
  62
  63 #define RFC1001_NAME_LEN 15
  64 #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
  65
  66 /* currently length of NIP6_FMT */
  67 #define SERVER_NAME_LENGTH 40
  68 #define SERVER_NAME_LEN_WITH_NULL     (SERVER_NAME_LENGTH + 1)
  69
  70 /* used to define string lengths for reversing unicode strings */
  71 /*         (256+1)*2 = 514                                     */
  72 /*           (max path length + 1 for null) * 2 for unicode    */
  73 #define MAX_NAME 514
  74
  75 #include "cifspdu.h"
  76
  77 #ifndef XATTR_DOS_ATTRIB
  78 #define XATTR_DOS_ATTRIB "user.DOSATTRIB"
  79 #endif
  80
  81 /*
  82  * CIFS vfs client Status information (based on what we know.)
  83  */
  84
  85 /* associated with each tcp and smb session */
  86 enum statusEnum {
  87         CifsNew = 0,
  88         CifsGood,
  89         CifsExiting,
  90         CifsNeedReconnect,
  91         CifsNeedNegotiate
  92 };
  93
  94 enum securityEnum {
  95         LANMAN = 0,                     /* Legacy LANMAN auth */
  96         NTLM,                   /* Legacy NTLM012 auth with NTLM hash */
  97         NTLMv2,                 /* Legacy NTLM auth with NTLMv2 hash */
  98         RawNTLMSSP,             /* NTLMSSP without SPNEGO, NTLMv2 hash */
  99 /*      NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */
 100         Kerberos,               /* Kerberos via SPNEGO */
 101 };
 102
 103 enum protocolEnum {
 104         TCP = 0,
 105         SCTP
 106         /* Netbios frames protocol not supported at this time */
 107 };
 108
 109 struct session_key {
 110         unsigned int len;
 111         char *response;
 112 };
 113
 114 /* crypto security descriptor definition */
 115 struct sdesc {
 116         struct shash_desc shash;
 117         char ctx[];
 118 };
 119
 120 /* crypto hashing related structure/fields, not specific to a sec mech */
 121 struct cifs_secmech {
 122         struct crypto_shash *hmacmd5; /* hmac-md5 hash function */
 123         struct crypto_shash *md5; /* md5 hash function */
 124         struct sdesc *sdeschmacmd5;  /* ctxt to generate ntlmv2 hash, CR1 */
 125         struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */
 126 };
 127
 128 /* per smb session structure/fields */
 129 struct ntlmssp_auth {
 130         __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */
 131         __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */
 132         unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */
 133         char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */
 134 };
 135
 136 struct cifs_cred {
 137         int uid;
 138         int gid;
 139         int mode;
 140         int cecount;
 141         struct cifs_sid osid;
 142         struct cifs_sid gsid;
 143         struct cifs_ntace *ntaces;
 144         struct cifs_ace *aces;
 145 };
 146
 147 /*
 148  *****************************************************************
 149  * Except the CIFS PDUs themselves all the
 150  * globally interesting structs should go here
 151  *****************************************************************
 152  */
 153
 154 enum smb_version {
 155         Smb_1 = 1,
 156         Smb_21,
 157 };
 158
 159 struct mid_q_entry;
 160 struct TCP_Server_Info;
 161 struct cifsFileInfo;
 162 struct cifs_ses;
 163
 164 struct smb_version_operations {
 165         int (*send_cancel)(struct TCP_Server_Info *, void *,
 166                            struct mid_q_entry *);
 167         bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
 168         /* setup request: allocate mid, sign message */
 169         int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int,
 170                              struct mid_q_entry **);
 171         /* check response: verify signature, map error */
 172         int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
 173                              bool);
 174         void (*add_credits)(struct TCP_Server_Info *, const unsigned int);
 175         void (*set_credits)(struct TCP_Server_Info *, const int);
 176         int * (*get_credits_field)(struct TCP_Server_Info *);
 177         __u64 (*get_next_mid)(struct TCP_Server_Info *);
 178         /* data offset from read response message */
 179         unsigned int (*read_data_offset)(char *);
 180         /* data length from read response message */
 181         unsigned int (*read_data_length)(char *);
 182         /* map smb to linux error */
 183         int (*map_error)(char *, bool);
 184         /* find mid corresponding to the response message */
 185         struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *);
 186         void (*dump_detail)(void *);
 187         /* verify the message */
 188         int (*check_message)(char *, unsigned int);
 189         bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
 190 };
 191
 192 struct smb_version_values {
 193         char            *version_string;
 194         __u32           large_lock_type;
 195         __u32           exclusive_lock_type;
 196         __u32           shared_lock_type;
 197         __u32           unlock_lock_type;
 198         size_t          header_size;
 199         size_t          max_header_size;
 200         size_t          read_rsp_size;
 201 };
 202
 203 #define HEADER_SIZE(server) (server->vals->header_size)
 204 #define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
 205
 206 struct smb_vol {
 207         char *username;
 208         char *password;
 209         char *domainname;
 210         char *UNC;
 211         char *UNCip;
 212         char *iocharset;  /* local code page for mapping to and from Unicode */
 213         char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
 214         char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
 215         uid_t cred_uid;
 216         uid_t linux_uid;
 217         gid_t linux_gid;
 218         uid_t backupuid;
 219         gid_t backupgid;
 220         umode_t file_mode;
 221         umode_t dir_mode;
 222         unsigned secFlg;
 223         bool retry:1;
 224         bool intr:1;
 225         bool setuids:1;
 226         bool override_uid:1;
 227         bool override_gid:1;
 228         bool dynperm:1;
 229         bool noperm:1;
 230         bool no_psx_acl:1; /* set if posix acl support should be disabled */
 231         bool cifs_acl:1;
 232         bool backupuid_specified; /* mount option  backupuid  is specified */
 233         bool backupgid_specified; /* mount option  backupgid  is specified */
 234         bool no_xattr:1;   /* set if xattr (EA) support should be disabled*/
 235         bool server_ino:1; /* use inode numbers from server ie UniqueId */
 236         bool direct_io:1;
 237         bool strict_io:1; /* strict cache behavior */
 238         bool remap:1;      /* set to remap seven reserved chars in filenames */
 239         bool posix_paths:1; /* unset to not ask for posix pathnames. */
 240         bool no_linux_ext:1;
 241         bool sfu_emul:1;
 242         bool nullauth:1;   /* attempt to authenticate with null user */
 243         bool nocase:1;     /* request case insensitive filenames */
 244         bool nobrl:1;      /* disable sending byte range locks to srv */
 245         bool mand_lock:1;  /* send mandatory not posix byte range lock reqs */
 246         bool seal:1;       /* request transport encryption on share */
 247         bool nodfs:1;      /* Do not request DFS, even if available */
 248         bool local_lease:1; /* check leases only on local system, not remote */
 249         bool noblocksnd:1;
 250         bool noautotune:1;
 251         bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
 252         bool fsc:1;     /* enable fscache */
 253         bool mfsymlinks:1; /* use Minshall+French Symlinks */
 254         bool multiuser:1;
 255         bool rwpidforward:1; /* pid forward for read/write operations */
 256         unsigned int rsize;
 257         unsigned int wsize;
 258         bool sockopt_tcp_nodelay:1;
 259         unsigned short int port;
 260         unsigned long actimeo; /* attribute cache timeout (jiffies) */
 261         struct smb_version_operations *ops;
 262         struct smb_version_values *vals;
 263         char *prepath;
 264         struct sockaddr_storage srcaddr; /* allow binding to a local IP */
 265         struct nls_table *local_nls;
 266 };
 267
 268 #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
 269                          CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
 270                          CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
 271                          CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
 272                          CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
 273                          CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
 274                          CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
 275                          CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
 276                          CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
 277                          CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
 278
 279 #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
 280                       MS_NODEV | MS_SYNCHRONOUS)
 281
 282 struct cifs_mnt_data {
 283         struct cifs_sb_info *cifs_sb;
 284         struct smb_vol *vol;
 285         int flags;
 286 };
 287
 288 static inline unsigned int
 289 get_rfc1002_length(void *buf)
 290 {
 291         return be32_to_cpu(*((__be32 *)buf));
 292 }
 293
 294 struct TCP_Server_Info {
 295         struct list_head tcp_ses_list;
 296         struct list_head smb_ses_list;
 297         int srv_count; /* reference counter */
 298         /* 15 character server name + 0x20 16th byte indicating type = srv */
 299         char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
 300         struct smb_version_operations   *ops;
 301         struct smb_version_values       *vals;
 302         enum statusEnum tcpStatus; /* what we think the status is */
 303         char *hostname; /* hostname portion of UNC string */
 304         struct socket *ssocket;
 305         struct sockaddr_storage dstaddr;
 306         struct sockaddr_storage srcaddr; /* locally bind to this IP */
 307 #ifdef CONFIG_NET_NS
 308         struct net *net;
 309 #endif
 310         wait_queue_head_t response_q;
 311         wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
 312         struct list_head pending_mid_q;
 313         bool noblocksnd;                /* use blocking sendmsg */
 314         bool noautotune;                /* do not autotune send buf sizes */
 315         bool tcp_nodelay;
 316         int credits;  /* send no more requests at once */
 317         unsigned int in_flight;  /* number of requests on the wire to server */
 318         spinlock_t req_lock;  /* protect the two values above */
 319         struct mutex srv_mutex;
 320         struct task_struct *tsk;
 321         char server_GUID[16];
 322         char sec_mode;
 323         bool session_estab; /* mark when very first sess is established */
 324         u16 dialect; /* dialect index that server chose */
 325         enum securityEnum secType;
 326         bool oplocks:1; /* enable oplocks */
 327         unsigned int maxReq;    /* Clients should submit no more */
 328         /* than maxReq distinct unanswered SMBs to the server when using  */
 329         /* multiplexed reads or writes */
 330         unsigned int maxBuf;    /* maxBuf specifies the maximum */
 331         /* message size the server can send or receive for non-raw SMBs */
 332         /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
 333         /* when socket is setup (and during reconnect) before NegProt sent */
 334         unsigned int max_rw;    /* maxRw specifies the maximum */
 335         /* message size the server can send or receive for */
 336         /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
 337         unsigned int max_vcs;   /* maximum number of smb sessions, at least
 338                                    those that can be specified uniquely with
 339                                    vcnumbers */
 340         int capabilities; /* allow selective disabling of caps by smb sess */
 341         int timeAdj;  /* Adjust for difference in server time zone in sec */
 342         __u64 CurrentMid;         /* multiplex id - rotating counter */
 343         char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
 344         /* 16th byte of RFC1001 workstation name is always null */
 345         char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
 346         __u32 sequence_number; /* for signing, protected by srv_mutex */
 347         struct session_key session_key;
 348         unsigned long lstrp; /* when we got last response from this server */
 349         struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
 350         /* extended security flavors that server supports */
 351         bool    sec_ntlmssp;            /* supports NTLMSSP */
 352         bool    sec_kerberosu2u;        /* supports U2U Kerberos */
 353         bool    sec_kerberos;           /* supports plain Kerberos */
 354         bool    sec_mskerberos;         /* supports legacy MS Kerberos */
 355         bool    large_buf;              /* is current buffer large? */
 356         struct delayed_work     echo; /* echo ping workqueue job */
 357         struct kvec *iov;       /* reusable kvec array for receives */
 358         unsigned int nr_iov;    /* number of kvecs in array */
 359         char    *smallbuf;      /* pointer to current "small" buffer */
 360         char    *bigbuf;        /* pointer to current "big" buffer */
 361         unsigned int total_read; /* total amount of data read in this pass */
 362 #ifdef CONFIG_CIFS_FSCACHE
 363         struct fscache_cookie   *fscache; /* client index cache cookie */
 364 #endif
 365 #ifdef CONFIG_CIFS_STATS2
 366         atomic_t in_send; /* requests trying to send */
 367         atomic_t num_waiters;   /* blocked waiting to get in sendrecv */
 368 #endif
 369 };
 370
 371 static inline unsigned int
 372 in_flight(struct TCP_Server_Info *server)
 373 {
 374         unsigned int num;
 375         spin_lock(&server->req_lock);
 376         num = server->in_flight;
 377         spin_unlock(&server->req_lock);
 378         return num;
 379 }
 380
 381 static inline bool
 382 has_credits(struct TCP_Server_Info *server, int *credits)
 383 {
 384         int num;
 385         spin_lock(&server->req_lock);
 386         num = *credits;
 387         spin_unlock(&server->req_lock);
 388         return num > 0;
 389 }
 390
 391 static inline void
 392 add_credits(struct TCP_Server_Info *server, const unsigned int add)
 393 {
 394         server->ops->add_credits(server, add);
 395 }
 396
 397 static inline void
 398 set_credits(struct TCP_Server_Info *server, const int val)
 399 {
 400         server->ops->set_credits(server, val);
 401 }
 402
 403 static inline __u64
 404 get_next_mid(struct TCP_Server_Info *server)
 405 {
 406         return server->ops->get_next_mid(server);
 407 }
 408
 409 /*
 410  * Macros to allow the TCP_Server_Info->net field and related code to drop out
 411  * when CONFIG_NET_NS isn't set.
 412  */
 413
 414 #ifdef CONFIG_NET_NS
 415
 416 static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
 417 {
 418         return srv->net;
 419 }
 420
 421 static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
 422 {
 423         srv->net = net;
 424 }
 425
 426 #else
 427
 428 static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
 429 {
 430         return &init_net;
 431 }
 432
 433 static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
 434 {
 435 }
 436
 437 #endif
 438
 439 /*
 440  * Session structure.  One of these for each uid session with a particular host
 441  */
 442 struct cifs_ses {
 443         struct list_head smb_ses_list;
 444         struct list_head tcon_list;
 445         struct mutex session_mutex;
 446         struct TCP_Server_Info *server; /* pointer to server info */
 447         int ses_count;          /* reference counter */
 448         enum statusEnum status;
 449         unsigned overrideSecFlg;  /* if non-zero override global sec flags */
 450         __u16 ipc_tid;          /* special tid for connection to IPC share */
 451         __u16 flags;
 452         __u16 vcnum;
 453         char *serverOS;         /* name of operating system underlying server */
 454         char *serverNOS;        /* name of network operating system of server */
 455         char *serverDomain;     /* security realm of server */
 456         int Suid;               /* remote smb uid  */
 457         uid_t linux_uid;        /* overriding owner of files on the mount */
 458         uid_t cred_uid;         /* owner of credentials */
 459         int capabilities;
 460         char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
 461                                 TCP names - will ipv6 and sctp addresses fit? */
 462         char *user_name;        /* must not be null except during init of sess
 463                                    and after mount option parsing we fill it */
 464         char *domainName;
 465         char *password;
 466         struct session_key auth_key;
 467         struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
 468         bool need_reconnect:1; /* connection reset, uid now invalid */
 469 };
 470 /* no more than one of the following three session flags may be set */
 471 #define CIFS_SES_NT4 1
 472 #define CIFS_SES_OS2 2
 473 #define CIFS_SES_W9X 4
 474 /* following flag is set for old servers such as OS2 (and Win95?)
 475    which do not negotiate NTLM or POSIX dialects, but instead
 476    negotiate one of the older LANMAN dialects */
 477 #define CIFS_SES_LANMAN 8
 478 /*
 479  * there is one of these for each connection to a resource on a particular
 480  * session
 481  */
 482 struct cifs_tcon {
 483         struct list_head tcon_list;
 484         int tc_count;
 485         struct list_head openFileList;
 486         struct cifs_ses *ses;   /* pointer to session associated with */
 487         char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
 488         char *nativeFileSystem;
 489         char *password;         /* for share-level security */
 490         __u16 tid;              /* The 2 byte tree id */
 491         __u16 Flags;            /* optional support bits */
 492         enum statusEnum tidStatus;
 493 #ifdef CONFIG_CIFS_STATS
 494         atomic_t num_smbs_sent;
 495         atomic_t num_writes;
 496         atomic_t num_reads;
 497         atomic_t num_flushes;
 498         atomic_t num_oplock_brks;
 499         atomic_t num_opens;
 500         atomic_t num_closes;
 501         atomic_t num_deletes;
 502         atomic_t num_mkdirs;
 503         atomic_t num_posixopens;
 504         atomic_t num_posixmkdirs;
 505         atomic_t num_rmdirs;
 506         atomic_t num_renames;
 507         atomic_t num_t2renames;
 508         atomic_t num_ffirst;
 509         atomic_t num_fnext;
 510         atomic_t num_fclose;
 511         atomic_t num_hardlinks;
 512         atomic_t num_symlinks;
 513         atomic_t num_locks;
 514         atomic_t num_acl_get;
 515         atomic_t num_acl_set;
 516 #ifdef CONFIG_CIFS_STATS2
 517         unsigned long long time_writes;
 518         unsigned long long time_reads;
 519         unsigned long long time_opens;
 520         unsigned long long time_deletes;
 521         unsigned long long time_closes;
 522         unsigned long long time_mkdirs;
 523         unsigned long long time_rmdirs;
 524         unsigned long long time_renames;
 525         unsigned long long time_t2renames;
 526         unsigned long long time_ffirst;
 527         unsigned long long time_fnext;
 528         unsigned long long time_fclose;
 529 #endif /* CONFIG_CIFS_STATS2 */
 530         __u64    bytes_read;
 531         __u64    bytes_written;
 532         spinlock_t stat_lock;
 533 #endif /* CONFIG_CIFS_STATS */
 534         FILE_SYSTEM_DEVICE_INFO fsDevInfo;
 535         FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
 536         FILE_SYSTEM_UNIX_INFO fsUnixInfo;
 537         bool ipc:1;             /* set if connection to IPC$ eg for RPC/PIPES */
 538         bool retry:1;
 539         bool nocase:1;
 540         bool seal:1;      /* transport encryption for this mounted share */
 541         bool unix_ext:1;  /* if false disable Linux extensions to CIFS protocol
 542                                 for this mount even if server would support */
 543         bool local_lease:1; /* check leases (only) on local system not remote */
 544         bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
 545         bool need_reconnect:1; /* connection reset, tid now invalid */
 546 #ifdef CONFIG_CIFS_FSCACHE
 547         u64 resource_id;                /* server resource id */
 548         struct fscache_cookie *fscache; /* cookie for share */
 549 #endif
 550         /* BB add field for back pointer to sb struct(s)? */
 551 };
 552
 553 /*
 554  * This is a refcounted and timestamped container for a tcon pointer. The
 555  * container holds a tcon reference. It is considered safe to free one of
 556  * these when the tl_count goes to 0. The tl_time is the time of the last
 557  * "get" on the container.
 558  */
 559 struct tcon_link {
 560         struct rb_node          tl_rbnode;
 561         uid_t                   tl_uid;
 562         unsigned long           tl_flags;
 563 #define TCON_LINK_MASTER        0
 564 #define TCON_LINK_PENDING       1
 565 #define TCON_LINK_IN_TREE       2
 566         unsigned long           tl_time;
 567         atomic_t                tl_count;
 568         struct cifs_tcon        *tl_tcon;
 569 };
 570
 571 extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
 572
 573 static inline struct cifs_tcon *
 574 tlink_tcon(struct tcon_link *tlink)
 575 {
 576         return tlink->tl_tcon;
 577 }
 578
 579 extern void cifs_put_tlink(struct tcon_link *tlink);
 580
 581 static inline struct tcon_link *
 582 cifs_get_tlink(struct tcon_link *tlink)
 583 {
 584         if (tlink && !IS_ERR(tlink))
 585                 atomic_inc(&tlink->tl_count);
 586         return tlink;
 587 }
 588
 589 /* This function is always expected to succeed */
 590 extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
 591
 592 /*
 593  * This info hangs off the cifsFileInfo structure, pointed to by llist.
 594  * This is used to track byte stream locks on the file
 595  */
 596 struct cifsLockInfo {
 597         struct list_head llist; /* pointer to next cifsLockInfo */
 598         struct list_head blist; /* pointer to locks blocked on this */
 599         wait_queue_head_t block_q;
 600         __u64 offset;
 601         __u64 length;
 602         __u32 pid;
 603         __u32 type;
 604 };
 605
 606 /*
 607  * One of these for each open instance of a file
 608  */
 609 struct cifs_search_info {
 610         loff_t index_of_last_entry;
 611         __u16 entries_in_buffer;
 612         __u16 info_level;
 613         __u32 resume_key;
 614         char *ntwrk_buf_start;
 615         char *srch_entries_start;
 616         char *last_entry;
 617         const char *presume_name;
 618         unsigned int resume_name_len;
 619         bool endOfSearch:1;
 620         bool emptyDir:1;
 621         bool unicode:1;
 622         bool smallBuf:1; /* so we know which buf_release function to call */
 623 };
 624
 625 struct cifsFileInfo {
 626         struct list_head tlist; /* pointer to next fid owned by tcon */
 627         struct list_head flist; /* next fid (file instance) for this inode */
 628         struct list_head llist; /*
 629                                  * brlocks held by this fid, protected by
 630                                  * lock_mutex from cifsInodeInfo structure
 631                                  */
 632         unsigned int uid;       /* allows finding which FileInfo structure */
 633         __u32 pid;              /* process id who opened file */
 634         __u16 netfid;           /* file id from remote */
 635         /* BB add lock scope info here if needed */ ;
 636         /* lock scope id (0 if none) */
 637         struct dentry *dentry;
 638         unsigned int f_flags;
 639         struct tcon_link *tlink;
 640         bool invalidHandle:1;   /* file closed via session abend */
 641         bool oplock_break_cancelled:1;
 642         int count;              /* refcount protected by cifs_file_list_lock */
 643         struct mutex fh_mutex; /* prevents reopen race after dead ses*/
 644         struct cifs_search_info srch_inf;
 645         struct work_struct oplock_break; /* work for oplock breaks */
 646 };
 647
 648 struct cifs_io_parms {
 649         __u16 netfid;
 650         __u32 pid;
 651         __u64 offset;
 652         unsigned int length;
 653         struct cifs_tcon *tcon;
 654 };
 655
 656 /*
 657  * Take a reference on the file private data. Must be called with
 658  * cifs_file_list_lock held.
 659  */
 660 static inline
 661 struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file)
 662 {
 663         ++cifs_file->count;
 664         return cifs_file;
 665 }
 666
 667 void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
 668
 669 /*
 670  * One of these for each file inode
 671  */
 672
 673 struct cifsInodeInfo {
 674         bool can_cache_brlcks;
 675         struct mutex lock_mutex;        /*
 676                                          * protect the field above and llist
 677                                          * from every cifsFileInfo structure
 678                                          * from openFileList
 679                                          */
 680         /* BB add in lists for dirty pages i.e. write caching info for oplock */
 681         struct list_head openFileList;
 682         __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
 683         bool clientCanCacheRead;        /* read oplock */
 684         bool clientCanCacheAll;         /* read and writebehind oplock */
 685         bool delete_pending;            /* DELETE_ON_CLOSE is set */
 686         bool invalid_mapping;           /* pagecache is invalid */
 687         unsigned long time;             /* jiffies of last update of inode */
 688         u64  server_eof;                /* current file size on server -- protected by i_lock */
 689         u64  uniqueid;                  /* server inode number */
 690         u64  createtime;                /* creation time on server */
 691 #ifdef CONFIG_CIFS_FSCACHE
 692         struct fscache_cookie *fscache;
 693 #endif
 694         struct inode vfs_inode;
 695 };
 696
 697 static inline struct cifsInodeInfo *
 698 CIFS_I(struct inode *inode)
 699 {
 700         return container_of(inode, struct cifsInodeInfo, vfs_inode);
 701 }
 702
 703 static inline struct cifs_sb_info *
 704 CIFS_SB(struct super_block *sb)
 705 {
 706         return sb->s_fs_info;
 707 }
 708
 709 static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
 710 {
 711         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
 712                 return '/';
 713         else
 714                 return '\\';
 715 }
 716
 717 static inline void
 718 convert_delimiter(char *path, char delim)
 719 {
 720         int i;
 721         char old_delim;
 722
 723         if (path == NULL)
 724                 return;
 725
 726         if (delim == '/')
 727                 old_delim = '\\';
 728         else
 729                 old_delim = '/';
 730
 731         for (i = 0; path[i] != '\0'; i++) {
 732                 if (path[i] == old_delim)
 733                         path[i] = delim;
 734         }
 735 }
 736
 737 #ifdef CONFIG_CIFS_STATS
 738 #define cifs_stats_inc atomic_inc
 739
 740 static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
 741                                             unsigned int bytes)
 742 {
 743         if (bytes) {
 744                 spin_lock(&tcon->stat_lock);
 745                 tcon->bytes_written += bytes;
 746                 spin_unlock(&tcon->stat_lock);
 747         }
 748 }
 749
 750 static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
 751                                          unsigned int bytes)
 752 {
 753         spin_lock(&tcon->stat_lock);
 754         tcon->bytes_read += bytes;
 755         spin_unlock(&tcon->stat_lock);
 756 }
 757 #else
 758
 759 #define  cifs_stats_inc(field) do {} while (0)
 760 #define  cifs_stats_bytes_written(tcon, bytes) do {} while (0)
 761 #define  cifs_stats_bytes_read(tcon, bytes) do {} while (0)
 762
 763 #endif
 764
 765
 766 /*
 767  * This is the prototype for the mid receive function. This function is for
 768  * receiving the rest of the SMB frame, starting with the WordCount (which is
 769  * just after the MID in struct smb_hdr). Note:
 770  *
 771  * - This will be called by cifsd, with no locks held.
 772  * - The mid will still be on the pending_mid_q.
 773  * - mid->resp_buf will point to the current buffer.
 774  *
 775  * Returns zero on a successful receive, or an error. The receive state in
 776  * the TCP_Server_Info will also be updated.
 777  */
 778 typedef int (mid_receive_t)(struct TCP_Server_Info *server,
 779                             struct mid_q_entry *mid);
 780
 781 /*
 782  * This is the prototype for the mid callback function. This is called once the
 783  * mid has been received off of the socket. When creating one, take special
 784  * care to avoid deadlocks. Things to bear in mind:
 785  *
 786  * - it will be called by cifsd, with no locks held
 787  * - the mid will be removed from any lists
 788  */
 789 typedef void (mid_callback_t)(struct mid_q_entry *mid);
 790
 791 /* one of these for every pending CIFS request to the server */
 792 struct mid_q_entry {
 793         struct list_head qhead; /* mids waiting on reply from this server */
 794         __u64 mid;              /* multiplex id */
 795         __u32 pid;              /* process id */
 796         __u32 sequence_number;  /* for CIFS signing */
 797         unsigned long when_alloc;  /* when mid was created */
 798 #ifdef CONFIG_CIFS_STATS2
 799         unsigned long when_sent; /* time when smb send finished */
 800         unsigned long when_received; /* when demux complete (taken off wire) */
 801 #endif
 802         mid_receive_t *receive; /* call receive callback */
 803         mid_callback_t *callback; /* call completion callback */
 804         void *callback_data;      /* general purpose pointer for callback */
 805         void *resp_buf;         /* pointer to received SMB header */
 806         int mid_state;  /* wish this were enum but can not pass to wait_event */
 807         __le16 command;         /* smb command code */
 808         bool large_buf:1;       /* if valid response, is pointer to large buf */
 809         bool multiRsp:1;        /* multiple trans2 responses for one request  */
 810         bool multiEnd:1;        /* both received */
 811 };
 812
 813 /*      Make code in transport.c a little cleaner by moving
 814         update of optional stats into function below */
 815 #ifdef CONFIG_CIFS_STATS2
 816
 817 static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
 818 {
 819         atomic_inc(&server->in_send);
 820 }
 821
 822 static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
 823 {
 824         atomic_dec(&server->in_send);
 825 }
 826
 827 static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
 828 {
 829         atomic_inc(&server->num_waiters);
 830 }
 831
 832 static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
 833 {
 834         atomic_dec(&server->num_waiters);
 835 }
 836
 837 static inline void cifs_save_when_sent(struct mid_q_entry *mid)
 838 {
 839         mid->when_sent = jiffies;
 840 }
 841 #else
 842 static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
 843 {
 844 }
 845 static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
 846 {
 847 }
 848
 849 static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
 850 {
 851 }
 852
 853 static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
 854 {
 855 }
 856
 857 static inline void cifs_save_when_sent(struct mid_q_entry *mid)
 858 {
 859 }
 860 #endif
 861
 862 /* for pending dnotify requests */
 863 struct dir_notify_req {
 864         struct list_head lhead;
 865         __le16 Pid;
 866         __le16 PidHigh;
 867         __u16 Mid;
 868         __u16 Tid;
 869         __u16 Uid;
 870         __u16 netfid;
 871         __u32 filter; /* CompletionFilter (for multishot) */
 872         int multishot;
 873         struct file *pfile;
 874 };
 875
 876 struct dfs_info3_param {
 877         int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
 878         int path_consumed;
 879         int server_type;
 880         int ref_flag;
 881         char *path_name;
 882         char *node_name;
 883 };
 884
 885 /*
 886  * common struct for holding inode info when searching for or updating an
 887  * inode with new info
 888  */
 889
 890 #define CIFS_FATTR_DFS_REFERRAL         0x1
 891 #define CIFS_FATTR_DELETE_PENDING       0x2
 892 #define CIFS_FATTR_NEED_REVAL           0x4
 893 #define CIFS_FATTR_INO_COLLISION        0x8
 894
 895 struct cifs_fattr {
 896         u32             cf_flags;
 897         u32             cf_cifsattrs;
 898         u64             cf_uniqueid;
 899         u64             cf_eof;
 900         u64             cf_bytes;
 901         u64             cf_createtime;
 902         uid_t           cf_uid;
 903         gid_t           cf_gid;
 904         umode_t         cf_mode;
 905         dev_t           cf_rdev;
 906         unsigned int    cf_nlink;
 907         unsigned int    cf_dtype;
 908         struct timespec cf_atime;
 909         struct timespec cf_mtime;
 910         struct timespec cf_ctime;
 911 };
 912
 913 static inline void free_dfs_info_param(struct dfs_info3_param *param)
 914 {
 915         if (param) {
 916                 kfree(param->path_name);
 917                 kfree(param->node_name);
 918                 kfree(param);
 919         }
 920 }
 921
 922 static inline void free_dfs_info_array(struct dfs_info3_param *param,
 923                                        int number_of_items)
 924 {
 925         int i;
 926         if ((number_of_items == 0) || (param == NULL))
 927                 return;
 928         for (i = 0; i < number_of_items; i++) {
 929                 kfree(param[i].path_name);
 930                 kfree(param[i].node_name);
 931         }
 932         kfree(param);
 933 }
 934
 935 #define   MID_FREE 0
 936 #define   MID_REQUEST_ALLOCATED 1
 937 #define   MID_REQUEST_SUBMITTED 2
 938 #define   MID_RESPONSE_RECEIVED 4
 939 #define   MID_RETRY_NEEDED      8 /* session closed while this request out */
 940 #define   MID_RESPONSE_MALFORMED 0x10
 941 #define   MID_SHUTDOWN           0x20
 942
 943 /* Types of response buffer returned from SendReceive2 */
 944 #define   CIFS_NO_BUFFER        0    /* Response buffer not returned */
 945 #define   CIFS_SMALL_BUFFER     1
 946 #define   CIFS_LARGE_BUFFER     2
 947 #define   CIFS_IOVEC            4    /* array of response buffers */
 948
 949 /* Type of Request to SendReceive2 */
 950 #define   CIFS_BLOCKING_OP      1    /* operation can block */
 951 #define   CIFS_ASYNC_OP         2    /* do not wait for response */
 952 #define   CIFS_TIMEOUT_MASK 0x003    /* only one of above set in req */
 953 #define   CIFS_LOG_ERROR    0x010    /* log NT STATUS if non-zero */
 954 #define   CIFS_LARGE_BUF_OP 0x020    /* large request buffer */
 955 #define   CIFS_NO_RESP      0x040    /* no response buffer required */
 956
 957 /* Security Flags: indicate type of session setup needed */
 958 #define   CIFSSEC_MAY_SIGN      0x00001
 959 #define   CIFSSEC_MAY_NTLM      0x00002
 960 #define   CIFSSEC_MAY_NTLMV2    0x00004
 961 #define   CIFSSEC_MAY_KRB5      0x00008
 962 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 963 #define   CIFSSEC_MAY_LANMAN    0x00010
 964 #define   CIFSSEC_MAY_PLNTXT    0x00020
 965 #else
 966 #define   CIFSSEC_MAY_LANMAN    0
 967 #define   CIFSSEC_MAY_PLNTXT    0
 968 #endif /* weak passwords */
 969 #define   CIFSSEC_MAY_SEAL      0x00040 /* not supported yet */
 970 #define   CIFSSEC_MAY_NTLMSSP   0x00080 /* raw ntlmssp with ntlmv2 */
 971
 972 #define   CIFSSEC_MUST_SIGN     0x01001
 973 /* note that only one of the following can be set so the
 974 result of setting MUST flags more than once will be to
 975 require use of the stronger protocol */
 976 #define   CIFSSEC_MUST_NTLM     0x02002
 977 #define   CIFSSEC_MUST_NTLMV2   0x04004
 978 #define   CIFSSEC_MUST_KRB5     0x08008
 979 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 980 #define   CIFSSEC_MUST_LANMAN   0x10010
 981 #define   CIFSSEC_MUST_PLNTXT   0x20020
 982 #ifdef CONFIG_CIFS_UPCALL
 983 #define   CIFSSEC_MASK          0xBF0BF /* allows weak security but also krb5 */
 984 #else
 985 #define   CIFSSEC_MASK          0xB70B7 /* current flags supported if weak */
 986 #endif /* UPCALL */
 987 #else /* do not allow weak pw hash */
 988 #define   CIFSSEC_MUST_LANMAN   0
 989 #define   CIFSSEC_MUST_PLNTXT   0
 990 #ifdef CONFIG_CIFS_UPCALL
 991 #define   CIFSSEC_MASK          0x8F08F /* flags supported if no weak allowed */
 992 #else
 993 #define   CIFSSEC_MASK          0x87087 /* flags supported if no weak allowed */
 994 #endif /* UPCALL */
 995 #endif /* WEAK_PW_HASH */
 996 #define   CIFSSEC_MUST_SEAL     0x40040 /* not supported yet */
 997 #define   CIFSSEC_MUST_NTLMSSP  0x80080 /* raw ntlmssp with ntlmv2 */
 998
 999 #define   CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2)
1000 #define   CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
1001 #define   CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)
1002 /*
1003  *****************************************************************
1004  * All constants go here
1005  *****************************************************************
1006  */
1007
1008 #define UID_HASH (16)
1009
1010 /*
1011  * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
1012  * following to be declared.
1013  */
1014
1015 /****************************************************************************
1016  *  Locking notes.  All updates to global variables and lists should be
1017  *                  protected by spinlocks or semaphores.
1018  *
1019  *  Spinlocks
1020  *  ---------
1021  *  GlobalMid_Lock protects:
1022  *      list operations on pending_mid_q and oplockQ
1023  *      updates to XID counters, multiplex id  and SMB sequence numbers
1024  *  cifs_file_list_lock protects:
1025  *      list operations on tcp and SMB session lists and tCon lists
1026  *  f_owner.lock protects certain per file struct operations
1027  *  mapping->page_lock protects certain per page operations
1028  *
1029  *  Semaphores
1030  *  ----------
1031  *  sesSem     operations on smb session
1032  *  tconSem    operations on tree connection
1033  *  fh_sem      file handle reconnection operations
1034  *
1035  ****************************************************************************/
1036
1037 #ifdef DECLARE_GLOBALS_HERE
1038 #define GLOBAL_EXTERN
1039 #else
1040 #define GLOBAL_EXTERN extern
1041 #endif
1042
1043 /*
1044  * the list of TCP_Server_Info structures, ie each of the sockets
1045  * connecting our client to a distinct server (ip address), is
1046  * chained together by cifs_tcp_ses_list. The list of all our SMB
1047  * sessions (and from that the tree connections) can be found
1048  * by iterating over cifs_tcp_ses_list
1049  */
1050 GLOBAL_EXTERN struct list_head          cifs_tcp_ses_list;
1051
1052 /*
1053  * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
1054  * tcp session, and the list of tcon's per smb session. It also protects
1055  * the reference counters for the server, smb session, and tcon. Finally,
1056  * changes to the tcon->tidStatus should be done while holding this lock.
1057  */
1058 GLOBAL_EXTERN spinlock_t                cifs_tcp_ses_lock;
1059
1060 /*
1061  * This lock protects the cifs_file->llist and cifs_file->flist
1062  * list operations, and updates to some flags (cifs_file->invalidHandle)
1063  * It will be moved to either use the tcon->stat_lock or equivalent later.
1064  * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
1065  * the cifs_tcp_ses_lock must be grabbed first and released last.
1066  */
1067 GLOBAL_EXTERN spinlock_t        cifs_file_list_lock;
1068
1069 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
1070 /* Outstanding dir notify requests */
1071 GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
1072 /* DirNotify response queue */
1073 GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
1074 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
1075
1076 /*
1077  * Global transaction id (XID) information
1078  */
1079 GLOBAL_EXTERN unsigned int GlobalCurrentXid;    /* protected by GlobalMid_Sem */
1080 GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
1081 GLOBAL_EXTERN unsigned int GlobalMaxActiveXid;  /* prot by GlobalMid_Sem */
1082 GLOBAL_EXTERN spinlock_t GlobalMid_Lock;  /* protects above & list operations */
1083                                           /* on midQ entries */
1084 /*
1085  *  Global counters, updated atomically
1086  */
1087 GLOBAL_EXTERN atomic_t sesInfoAllocCount;
1088 GLOBAL_EXTERN atomic_t tconInfoAllocCount;
1089 GLOBAL_EXTERN atomic_t tcpSesAllocCount;
1090 GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
1091 GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
1092
1093 /* Various Debug counters */
1094 GLOBAL_EXTERN atomic_t bufAllocCount;    /* current number allocated  */
1095 #ifdef CONFIG_CIFS_STATS2
1096 GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
1097 GLOBAL_EXTERN atomic_t totSmBufAllocCount;
1098 #endif
1099 GLOBAL_EXTERN atomic_t smBufAllocCount;
1100 GLOBAL_EXTERN atomic_t midCount;
1101
1102 /* Misc globals */
1103 GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */
1104 GLOBAL_EXTERN unsigned int lookupCacheEnabled;
1105 GLOBAL_EXTERN unsigned int global_secflags;     /* if on, session setup sent
1106                                 with more secure ntlmssp2 challenge/resp */
1107 GLOBAL_EXTERN unsigned int sign_CIFS_PDUs;  /* enable smb packet signing */
1108 GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
1109 GLOBAL_EXTERN unsigned int CIFSMaxBufSize;  /* max size not including hdr */
1110 GLOBAL_EXTERN unsigned int cifs_min_rcv;    /* min size of big ntwrk buf pool */
1111 GLOBAL_EXTERN unsigned int cifs_min_small;  /* min size of small buf pool */
1112 GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
1113
1114 #ifdef CONFIG_CIFS_ACL
1115 GLOBAL_EXTERN struct rb_root uidtree;
1116 GLOBAL_EXTERN struct rb_root gidtree;
1117 GLOBAL_EXTERN spinlock_t siduidlock;
1118 GLOBAL_EXTERN spinlock_t sidgidlock;
1119 GLOBAL_EXTERN struct rb_root siduidtree;
1120 GLOBAL_EXTERN struct rb_root sidgidtree;
1121 GLOBAL_EXTERN spinlock_t uidsidlock;
1122 GLOBAL_EXTERN spinlock_t gidsidlock;
1123 #endif /* CONFIG_CIFS_ACL */
1124
1125 void cifs_oplock_break(struct work_struct *work);
1126
1127 extern const struct slow_work_ops cifs_oplock_break_ops;
1128 extern struct workqueue_struct *cifsiod_wq;
1129
1130 /* Operations for different SMB versions */
1131 #define SMB1_VERSION_STRING     "1.0"
1132 extern struct smb_version_operations smb1_operations;
1133 extern struct smb_version_values smb1_values;
1134 #define SMB21_VERSION_STRING    "2.1"
1135 extern struct smb_version_operations smb21_operations;
1136 extern struct smb_version_values smb21_values;
1137 #endif  /* _CIFS_GLOB_H */