diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 1832 |
1 files changed, 0 insertions, 1832 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h deleted file mode 100644 index 94dbdbe5be34..000000000000 --- a/fs/cifs/cifsglob.h +++ /dev/null @@ -1,1832 +0,0 @@ -/* - * fs/cifs/cifsglob.h - * - * Copyright (C) International Business Machines Corp., 2002,2008 - * Author(s): Steve French (sfrench@us.ibm.com) - * Jeremy Allison (jra@samba.org) - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published - * by the Free Software Foundation; either version 2.1 of the License, or - * (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU Lesser General Public License for more details. - * - */ -#ifndef _CIFS_GLOB_H -#define _CIFS_GLOB_H - -#include <linux/in.h> -#include <linux/in6.h> -#include <linux/slab.h> -#include <linux/mempool.h> -#include <linux/workqueue.h> -#include "cifs_fs_sb.h" -#include "cifsacl.h" -#include <crypto/internal/hash.h> -#include <linux/scatterlist.h> -#include <uapi/linux/cifs/cifs_mount.h> -#include "smb2pdu.h" - -#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ - -#define SMB_PATH_MAX 260 -#define CIFS_PORT 445 -#define RFC1001_PORT 139 - -/* - * The sizes of various internal tables and strings - */ -#define MAX_UID_INFO 16 -#define MAX_SES_INFO 2 -#define MAX_TCON_INFO 4 - -#define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) - -#define CIFS_MIN_RCV_POOL 4 - -#define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ -/* - * default attribute cache timeout (jiffies) - */ -#define CIFS_DEF_ACTIMEO (1 * HZ) - -/* - * max attribute cache timeout (jiffies) - 2^30 - */ -#define CIFS_MAX_ACTIMEO (1 << 30) - -/* - * MAX_REQ is the maximum number of requests that WE will send - * on one socket concurrently. - */ -#define CIFS_MAX_REQ 32767 - -#define RFC1001_NAME_LEN 15 -#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) - -/* maximum length of ip addr as a string (including ipv6 and sctp) */ -#define SERVER_NAME_LENGTH 80 -#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) - -/* echo interval in seconds */ -#define SMB_ECHO_INTERVAL_MIN 1 -#define SMB_ECHO_INTERVAL_MAX 600 -#define SMB_ECHO_INTERVAL_DEFAULT 60 - -/* maximum number of PDUs in one compound */ -#define MAX_COMPOUND 5 - -/* - * Default number of credits to keep available for SMB3. - * This value is chosen somewhat arbitrarily. The Windows client - * defaults to 128 credits, the Windows server allows clients up to - * 512 credits (or 8K for later versions), and the NetApp server - * does not limit clients at all. Choose a high enough default value - * such that the client shouldn't limit performance, but allow mount - * to override (until you approach 64K, where we limit credits to 65000 - * to reduce possibility of seeing more server credit overflow bugs. - */ -#define SMB2_MAX_CREDITS_AVAILABLE 32000 - -#include "cifspdu.h" - -#ifndef XATTR_DOS_ATTRIB -#define XATTR_DOS_ATTRIB "user.DOSATTRIB" -#endif - -/* - * CIFS vfs client Status information (based on what we know.) - */ - -/* associated with each tcp and smb session */ -enum statusEnum { - CifsNew = 0, - CifsGood, - CifsExiting, - CifsNeedReconnect, - CifsNeedNegotiate -}; - -enum securityEnum { - Unspecified = 0, /* not specified */ - LANMAN, /* Legacy LANMAN auth */ - NTLM, /* Legacy NTLM012 auth with NTLM hash */ - NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ - RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ - Kerberos, /* Kerberos via SPNEGO */ -}; - -struct session_key { - unsigned int len; - char *response; -}; - -/* crypto security descriptor definition */ -struct sdesc { - struct shash_desc shash; - char ctx[]; -}; - -/* crypto hashing related structure/fields, not specific to a sec mech */ -struct cifs_secmech { - struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ - struct crypto_shash *md5; /* md5 hash function */ - struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ - struct crypto_shash *cmacaes; /* block-cipher based MAC function */ - struct crypto_shash *sha512; /* sha512 hash function */ - struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ - struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ - struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ - struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ - struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ - struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ - struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ -}; - -/* per smb session structure/fields */ -struct ntlmssp_auth { - bool sesskey_per_smbsess; /* whether session key is per smb session */ - __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ - __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ - unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ - char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ -}; - -struct cifs_cred { - int uid; - int gid; - int mode; - int cecount; - struct cifs_sid osid; - struct cifs_sid gsid; - struct cifs_ntace *ntaces; - struct cifs_ace *aces; -}; - -/* - ***************************************************************** - * Except the CIFS PDUs themselves all the - * globally interesting structs should go here - ***************************************************************** - */ - -/* - * A smb_rqst represents a complete request to be issued to a server. It's - * formed by a kvec array, followed by an array of pages. Page data is assumed - * to start at the beginning of the first page. - */ -struct smb_rqst { - struct kvec *rq_iov; /* array of kvecs */ - unsigned int rq_nvec; /* number of kvecs in array */ - struct page **rq_pages; /* pointer to array of page ptrs */ - unsigned int rq_offset; /* the offset to the 1st page */ - unsigned int rq_npages; /* number pages in array */ - unsigned int rq_pagesz; /* page size to use */ - unsigned int rq_tailsz; /* length of last page */ -}; - -enum smb_version { - Smb_1 = 1, - Smb_20, - Smb_21, - Smb_30, - Smb_302, - Smb_311, - Smb_3any, - Smb_default, - Smb_version_err -}; - -struct mid_q_entry; -struct TCP_Server_Info; -struct cifsFileInfo; -struct cifs_ses; -struct cifs_tcon; -struct dfs_info3_param; -struct cifs_fattr; -struct smb_vol; -struct cifs_fid; -struct cifs_readdata; -struct cifs_writedata; -struct cifs_io_parms; -struct cifs_search_info; -struct cifsInodeInfo; -struct cifs_open_parms; - -struct smb_version_operations { - int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, - struct mid_q_entry *); - bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); - /* setup request: allocate mid, sign message */ - struct mid_q_entry *(*setup_request)(struct cifs_ses *, - struct smb_rqst *); - /* setup async request: allocate mid, sign message */ - struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, - struct smb_rqst *); - /* check response: verify signature, map error */ - int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, - bool); - void (*add_credits)(struct TCP_Server_Info *, const unsigned int, - const int); - void (*set_credits)(struct TCP_Server_Info *, const int); - int * (*get_credits_field)(struct TCP_Server_Info *, const int); - unsigned int (*get_credits)(struct mid_q_entry *); - __u64 (*get_next_mid)(struct TCP_Server_Info *); - /* data offset from read response message */ - unsigned int (*read_data_offset)(char *); - /* - * Data length from read response message - * When in_remaining is true, the returned data length is in - * message field DataRemaining for out-of-band data read (e.g through - * Memory Registration RDMA write in SMBD). - * Otherwise, the returned data length is in message field DataLength. - */ - unsigned int (*read_data_length)(char *, bool in_remaining); - /* map smb to linux error */ - int (*map_error)(char *, bool); - /* find mid corresponding to the response message */ - struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); - void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); - void (*clear_stats)(struct cifs_tcon *); - void (*print_stats)(struct seq_file *m, struct cifs_tcon *); - void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); - /* verify the message */ - int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); - bool (*is_oplock_break)(char *, struct TCP_Server_Info *); - int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *); - void (*downgrade_oplock)(struct TCP_Server_Info *, - struct cifsInodeInfo *, bool); - /* process transaction2 response */ - bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, - char *, int); - /* check if we need to negotiate */ - bool (*need_neg)(struct TCP_Server_Info *); - /* negotiate to the server */ - int (*negotiate)(const unsigned int, struct cifs_ses *); - /* set negotiated write size */ - unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); - /* set negotiated read size */ - unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); - /* setup smb sessionn */ - int (*sess_setup)(const unsigned int, struct cifs_ses *, - const struct nls_table *); - /* close smb session */ - int (*logoff)(const unsigned int, struct cifs_ses *); - /* connect to a server share */ - int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, - struct cifs_tcon *, const struct nls_table *); - /* close tree connecion */ - int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); - /* get DFS referrals */ - int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, - const char *, struct dfs_info3_param **, - unsigned int *, const struct nls_table *, int); - /* informational QFS call */ - void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); - /* check if a path is accessible or not */ - int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const char *); - /* query path data from the server */ - int (*query_path_info)(const unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const char *, - FILE_ALL_INFO *, bool *, bool *); - /* query file data from the server */ - int (*query_file_info)(const unsigned int, struct cifs_tcon *, - struct cifs_fid *, FILE_ALL_INFO *); - /* get server index number */ - int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const char *, - u64 *uniqueid, FILE_ALL_INFO *); - /* set size by path */ - int (*set_path_size)(const unsigned int, struct cifs_tcon *, - const char *, __u64, struct cifs_sb_info *, bool); - /* set size by file handle */ - int (*set_file_size)(const unsigned int, struct cifs_tcon *, - struct cifsFileInfo *, __u64, bool); - /* set attributes */ - int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, - const unsigned int); - int (*set_compression)(const unsigned int, struct cifs_tcon *, - struct cifsFileInfo *); - /* check if we can send an echo or nor */ - bool (*can_echo)(struct TCP_Server_Info *); - /* send echo request */ - int (*echo)(struct TCP_Server_Info *); - /* create directory */ - int (*posix_mkdir)(const unsigned int xid, struct inode *inode, - umode_t mode, struct cifs_tcon *tcon, - const char *full_path, - struct cifs_sb_info *cifs_sb); - int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, - struct cifs_sb_info *); - /* set info on created directory */ - void (*mkdir_setinfo)(struct inode *, const char *, - struct cifs_sb_info *, struct cifs_tcon *, - const unsigned int); - /* remove directory */ - int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, - struct cifs_sb_info *); - /* unlink file */ - int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, - struct cifs_sb_info *); - /* open, rename and delete file */ - int (*rename_pending_delete)(const char *, struct dentry *, - const unsigned int); - /* send rename request */ - int (*rename)(const unsigned int, struct cifs_tcon *, const char *, - const char *, struct cifs_sb_info *); - /* send create hardlink request */ - int (*create_hardlink)(const unsigned int, struct cifs_tcon *, - const char *, const char *, - struct cifs_sb_info *); - /* query symlink target */ - int (*query_symlink)(const unsigned int, struct cifs_tcon *, - const char *, char **, struct cifs_sb_info *); - /* open a file for non-posix mounts */ - int (*open)(const unsigned int, struct cifs_open_parms *, - __u32 *, FILE_ALL_INFO *); - /* set fid protocol-specific info */ - void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); - /* close a file */ - void (*close)(const unsigned int, struct cifs_tcon *, - struct cifs_fid *); - /* send a flush request to the server */ - int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); - /* async read from the server */ - int (*async_readv)(struct cifs_readdata *); - /* async write to the server */ - int (*async_writev)(struct cifs_writedata *, - void (*release)(struct kref *)); - /* sync read from the server */ - int (*sync_read)(const unsigned int, struct cifs_fid *, - struct cifs_io_parms *, unsigned int *, char **, - int *); - /* sync write to the server */ - int (*sync_write)(const unsigned int, struct cifs_fid *, - struct cifs_io_parms *, unsigned int *, struct kvec *, - unsigned long); - /* open dir, start readdir */ - int (*query_dir_first)(const unsigned int, struct cifs_tcon *, - const char *, struct cifs_sb_info *, - struct cifs_fid *, __u16, - struct cifs_search_info *); - /* continue readdir */ - int (*query_dir_next)(const unsigned int, struct cifs_tcon *, - struct cifs_fid *, - __u16, struct cifs_search_info *srch_inf); - /* close dir */ - int (*close_dir)(const unsigned int, struct cifs_tcon *, - struct cifs_fid *); - /* calculate a size of SMB message */ - unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); - /* check for STATUS_PENDING and process it in a positive case */ - bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); - /* check for STATUS_NETWORK_SESSION_EXPIRED */ - bool (*is_session_expired)(char *); - /* send oplock break response */ - int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, - struct cifsInodeInfo *); - /* query remote filesystem */ - int (*queryfs)(const unsigned int, struct cifs_tcon *, - struct kstatfs *); - /* send mandatory brlock to the server */ - int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, - __u64, __u32, int, int, bool); - /* unlock range of mandatory locks */ - int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, - const unsigned int); - /* push brlocks from the cache to the server */ - int (*push_mand_locks)(struct cifsFileInfo *); - /* get lease key of the inode */ - void (*get_lease_key)(struct inode *, struct cifs_fid *); - /* set lease key of the inode */ - void (*set_lease_key)(struct inode *, struct cifs_fid *); - /* generate new lease key */ - void (*new_lease_key)(struct cifs_fid *); - int (*generate_signingkey)(struct cifs_ses *); - int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); - int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, - struct cifsFileInfo *src_file); - int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, - struct cifsFileInfo *src_file, void __user *); - int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const unsigned char *, - char *, unsigned int *); - int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const unsigned char *, - char *, unsigned int *); - /* if we can do cache read operations */ - bool (*is_read_op)(__u32); - /* set oplock level for the inode */ - void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, - bool *); - /* create lease context buffer for CREATE request */ - char * (*create_lease_buf)(u8 *lease_key, u8 oplock); - /* parse lease context buffer and return oplock/epoch info */ - __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); - ssize_t (*copychunk_range)(const unsigned int, - struct cifsFileInfo *src_file, - struct cifsFileInfo *target_file, - u64 src_off, u64 len, u64 dest_off); - int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, - struct cifsFileInfo *target_file, u64 src_off, u64 len, - u64 dest_off); - int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); - ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, - const unsigned char *, const unsigned char *, char *, - size_t, struct cifs_sb_info *); - int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, - const char *, const void *, const __u16, - const struct nls_table *, struct cifs_sb_info *); - struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, - const char *, u32 *); - struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, - const struct cifs_fid *, u32 *); - int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, - int); - /* writepages retry size */ - unsigned int (*wp_retry_size)(struct inode *); - /* get mtu credits */ - int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, - unsigned int *, unsigned int *); - /* check if we need to issue closedir */ - bool (*dir_needs_close)(struct cifsFileInfo *); - long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, - loff_t); - /* init transform request - used for encryption for now */ - int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, - struct smb_rqst *, struct smb_rqst *); - int (*is_transform_hdr)(void *buf); - int (*receive_transform)(struct TCP_Server_Info *, - struct mid_q_entry **, char **, int *); - enum securityEnum (*select_sectype)(struct TCP_Server_Info *, - enum securityEnum); - int (*next_header)(char *); - /* ioctl passthrough for query_info */ - int (*ioctl_query_info)(const unsigned int xid, - struct cifs_tcon *tcon, - __le16 *path, int is_dir, - unsigned long p); -}; - -struct smb_version_values { - char *version_string; - __u16 protocol_id; - __u32 req_capabilities; - __u32 large_lock_type; - __u32 exclusive_lock_type; - __u32 shared_lock_type; - __u32 unlock_lock_type; - size_t header_preamble_size; - size_t header_size; - size_t max_header_size; - size_t read_rsp_size; - __le16 lock_cmd; - unsigned int cap_unix; - unsigned int cap_nt_find; - unsigned int cap_large_files; - __u16 signing_enabled; - __u16 signing_required; - size_t create_lease_size; -}; - -#define HEADER_SIZE(server) (server->vals->header_size) -#define MAX_HEADER_SIZE(server) (server->vals->max_header_size) - -struct smb_vol { - char *username; - char *password; - char *domainname; - char *UNC; - char *iocharset; /* local code page for mapping to and from Unicode */ - char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ - char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ - kuid_t cred_uid; - kuid_t linux_uid; - kgid_t linux_gid; - kuid_t backupuid; - kgid_t backupgid; - umode_t file_mode; - umode_t dir_mode; - enum securityEnum sectype; /* sectype requested via mnt opts */ - bool sign; /* was signing requested via mnt opts? */ - bool retry:1; - bool intr:1; - bool setuids:1; - bool setuidfromacl:1; - bool override_uid:1; - bool override_gid:1; - bool dynperm:1; - bool noperm:1; - bool no_psx_acl:1; /* set if posix acl support should be disabled */ - bool cifs_acl:1; - bool backupuid_specified; /* mount option backupuid is specified */ - bool backupgid_specified; /* mount option backupgid is specified */ - bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ - bool server_ino:1; /* use inode numbers from server ie UniqueId */ - bool direct_io:1; - bool strict_io:1; /* strict cache behavior */ - bool remap:1; /* set to remap seven reserved chars in filenames */ - bool sfu_remap:1; /* remap seven reserved chars ala SFU */ - bool posix_paths:1; /* unset to not ask for posix pathnames. */ - bool no_linux_ext:1; - bool linux_ext:1; - bool sfu_emul:1; - bool nullauth:1; /* attempt to authenticate with null user */ - bool nocase:1; /* request case insensitive filenames */ - bool nobrl:1; /* disable sending byte range locks to srv */ - bool nohandlecache:1; /* disable caching dir handles if srvr probs */ - bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ - bool seal:1; /* request transport encryption on share */ - bool nodfs:1; /* Do not request DFS, even if available */ - bool local_lease:1; /* check leases only on local system, not remote */ - bool noblocksnd:1; - bool noautotune:1; - bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ - bool fsc:1; /* enable fscache */ - bool mfsymlinks:1; /* use Minshall+French Symlinks */ - bool multiuser:1; - bool rwpidforward:1; /* pid forward for read/write operations */ - bool nosharesock:1; - bool persistent:1; - bool nopersistent:1; - bool resilient:1; /* noresilient not required since not fored for CA */ - bool domainauto:1; - bool rdma:1; - unsigned int rsize; - unsigned int wsize; - bool sockopt_tcp_nodelay:1; - unsigned long actimeo; /* attribute cache timeout (jiffies) */ - struct smb_version_operations *ops; - struct smb_version_values *vals; - char *prepath; - struct sockaddr_storage dstaddr; /* destination address */ - struct sockaddr_storage srcaddr; /* allow binding to a local IP */ - struct nls_table *local_nls; - unsigned int echo_interval; /* echo interval in secs */ - __u64 snapshot_time; /* needed for timewarp tokens */ - unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ -}; - -#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ - CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ - CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ - CIFS_MOUNT_MAP_SFM_CHR | \ - CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ - CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ - CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ - CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ - CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ - CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ - CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) - -#define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ - SB_NODEV | SB_SYNCHRONOUS) - -struct cifs_mnt_data { - struct cifs_sb_info *cifs_sb; - struct smb_vol *vol; - int flags; -}; - -static inline unsigned int -get_rfc1002_length(void *buf) -{ - return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; -} - -static inline void -inc_rfc1001_len(void *buf, int count) -{ - be32_add_cpu((__be32 *)buf, count); -} - -struct TCP_Server_Info { - struct list_head tcp_ses_list; - struct list_head smb_ses_list; - int srv_count; /* reference counter */ - /* 15 character server name + 0x20 16th byte indicating type = srv */ - char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; - struct smb_version_operations *ops; - struct smb_version_values *vals; - enum statusEnum tcpStatus; /* what we think the status is */ - char *hostname; /* hostname portion of UNC string */ - struct socket *ssocket; - struct sockaddr_storage dstaddr; - struct sockaddr_storage srcaddr; /* locally bind to this IP */ -#ifdef CONFIG_NET_NS - struct net *net; -#endif - wait_queue_head_t response_q; - wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ - struct list_head pending_mid_q; - bool noblocksnd; /* use blocking sendmsg */ - bool noautotune; /* do not autotune send buf sizes */ - bool tcp_nodelay; - unsigned int credits; /* send no more requests at once */ - unsigned int max_credits; /* can override large 32000 default at mnt */ - unsigned int in_flight; /* number of requests on the wire to server */ - spinlock_t req_lock; /* protect the two values above */ - struct mutex srv_mutex; - struct task_struct *tsk; - char server_GUID[16]; - __u16 sec_mode; - bool sign; /* is signing enabled on this connection? */ - bool session_estab; /* mark when very first sess is established */ - int echo_credits; /* echo reserved slots */ - int oplock_credits; /* oplock break reserved slots */ - bool echoes:1; /* enable echoes */ - __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ - u16 dialect; /* dialect index that server chose */ - bool oplocks:1; /* enable oplocks */ - unsigned int maxReq; /* Clients should submit no more */ - /* than maxReq distinct unanswered SMBs to the server when using */ - /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ - unsigned int maxBuf; /* maxBuf specifies the maximum */ - /* message size the server can send or receive for non-raw SMBs */ - /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ - /* when socket is setup (and during reconnect) before NegProt sent */ - unsigned int max_rw; /* maxRw specifies the maximum */ - /* message size the server can send or receive for */ - /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ - unsigned int capabilities; /* selective disabling of caps by smb sess */ - int timeAdj; /* Adjust for difference in server time zone in sec */ - __u64 CurrentMid; /* multiplex id - rotating counter */ - char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ - /* 16th byte of RFC1001 workstation name is always null */ - char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; - __u32 sequence_number; /* for signing, protected by srv_mutex */ - __u32 reconnect_instance; /* incremented on each reconnect */ - struct session_key session_key; - unsigned long lstrp; /* when we got last response from this server */ - struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ -#define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ -#define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ -#define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ - char negflavor; /* NEGOTIATE response flavor */ - /* extended security flavors that server supports */ - bool sec_ntlmssp; /* supports NTLMSSP */ - bool sec_kerberosu2u; /* supports U2U Kerberos */ - bool sec_kerberos; /* supports plain Kerberos */ - bool sec_mskerberos; /* supports legacy MS Kerberos */ - bool large_buf; /* is current buffer large? */ - /* use SMBD connection instead of socket */ - bool rdma; - /* point to the SMBD connection if RDMA is used instead of socket */ - struct smbd_connection *smbd_conn; - struct delayed_work echo; /* echo ping workqueue job */ - char *smallbuf; /* pointer to current "small" buffer */ - char *bigbuf; /* pointer to current "big" buffer */ - /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ - unsigned int pdu_size; - unsigned int total_read; /* total amount of data read in this pass */ -#ifdef CONFIG_CIFS_FSCACHE - struct fscache_cookie *fscache; /* client index cache cookie */ -#endif -#ifdef CONFIG_CIFS_STATS2 - atomic_t in_send; /* requests trying to send */ - atomic_t num_waiters; /* blocked waiting to get in sendrecv */ - atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ -#endif /* STATS2 */ - unsigned int max_read; - unsigned int max_write; - __le16 cipher_type; - /* save initital negprot hash */ - __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; - bool posix_ext_supported; - struct delayed_work reconnect; /* reconnect workqueue job */ - struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ - unsigned long echo_interval; - - /* - * Number of targets available for reconnect. The more targets - * the more tasks have to wait to let the demultiplex thread - * reconnect. - */ - int nr_targets; -}; - -static inline unsigned int -in_flight(struct TCP_Server_Info *server) -{ - unsigned int num; - spin_lock(&server->req_lock); - num = server->in_flight; - spin_unlock(&server->req_lock); - return num; -} - -static inline bool -has_credits(struct TCP_Server_Info *server, int *credits) -{ - int num; - spin_lock(&server->req_lock); - num = *credits; - spin_unlock(&server->req_lock); - return num > 0; -} - -static inline void -add_credits(struct TCP_Server_Info *server, const unsigned int add, - const int optype) -{ - server->ops->add_credits(server, add, optype); -} - -static inline void -add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, - const int optype) -{ - if (add) { - server->ops->add_credits(server, add, optype); - wake_up(&server->request_q); - } -} - -static inline void -set_credits(struct TCP_Server_Info *server, const int val) -{ - server->ops->set_credits(server, val); -} - -static inline __le64 -get_next_mid64(struct TCP_Server_Info *server) -{ - return cpu_to_le64(server->ops->get_next_mid(server)); -} - -static inline __le16 -get_next_mid(struct TCP_Server_Info *server) -{ - __u16 mid = server->ops->get_next_mid(server); - /* - * The value in the SMB header should be little endian for easy - * on-the-wire decoding. - */ - return cpu_to_le16(mid); -} - -static inline __u16 -get_mid(const struct smb_hdr *smb) -{ - return le16_to_cpu(smb->Mid); -} - -static inline bool -compare_mid(__u16 mid, const struct smb_hdr *smb) -{ - return mid == le16_to_cpu(smb->Mid); -} - -/* - * When the server supports very large reads and writes via POSIX extensions, - * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not - * including the RFC1001 length. - * - * Note that this might make for "interesting" allocation problems during - * writeback however as we have to allocate an array of pointers for the - * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. - * - * For reads, there is a similar problem as we need to allocate an array - * of kvecs to handle the receive, though that should only need to be done - * once. - */ -#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) -#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) - -/* - * When the server doesn't allow large posix writes, only allow a rsize/wsize - * of 2^17-1 minus the size of the call header. That allows for a read or - * write up to the maximum size described by RFC1002. - */ -#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) -#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) - -/* - * The default wsize is 1M. find_get_pages seems to return a maximum of 256 - * pages in a single call. With PAGE_SIZE == 4k, this means we can fill - * a single wsize request with a single call. - */ -#define CIFS_DEFAULT_IOSIZE (1024 * 1024) -#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024) - -/* - * Windows only supports a max of 60kb reads and 65535 byte writes. Default to - * those values when posix extensions aren't in force. In actuality here, we - * use 65536 to allow for a write that is a multiple of 4k. Most servers seem - * to be ok with the extra byte even though Windows doesn't send writes that - * are that large. - * - * Citation: - * - * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx - */ -#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) -#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) - -/* - * Macros to allow the TCP_Server_Info->net field and related code to drop out - * when CONFIG_NET_NS isn't set. - */ - -#ifdef CONFIG_NET_NS - -static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) -{ - return srv->net; -} - -static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) -{ - srv->net = net; -} - -#else - -static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) -{ - return &init_net; -} - -static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) -{ -} - -#endif - -struct cifs_server_iface { - size_t speed; - unsigned int rdma_capable : 1; - unsigned int rss_capable : 1; - struct sockaddr_storage sockaddr; -}; - -/* - * Session structure. One of these for each uid session with a particular host - */ -struct cifs_ses { - struct list_head smb_ses_list; - struct list_head tcon_list; - struct cifs_tcon *tcon_ipc; - struct mutex session_mutex; - struct TCP_Server_Info *server; /* pointer to server info */ - int ses_count; /* reference counter */ - enum statusEnum status; - unsigned overrideSecFlg; /* if non-zero override global sec flags */ - char *serverOS; /* name of operating system underlying server */ - char *serverNOS; /* name of network operating system of server */ - char *serverDomain; /* security realm of server */ - __u64 Suid; /* remote smb uid */ - kuid_t linux_uid; /* overriding owner of files on the mount */ - kuid_t cred_uid; /* owner of credentials */ - unsigned int capabilities; - char serverName[SERVER_NAME_LEN_WITH_NULL]; - char *user_name; /* must not be null except during init of sess - and after mount option parsing we fill it */ - char *domainName; - char *password; - struct session_key auth_key; - struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ - enum securityEnum sectype; /* what security flavor was specified? */ - bool sign; /* is signing required? */ - bool need_reconnect:1; /* connection reset, uid now invalid */ - bool domainAuto:1; - __u16 session_flags; - __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; - __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; - __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; - __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; - - /* - * Network interfaces available on the server this session is - * connected to. - * - * Other channels can be opened by connecting and binding this - * session to interfaces from this list. - * - * iface_lock should be taken when accessing any of these fields - */ - spinlock_t iface_lock; - struct cifs_server_iface *iface_list; - size_t iface_count; - unsigned long iface_last_update; /* jiffies */ -}; - -static inline bool -cap_unix(struct cifs_ses *ses) -{ - return ses->server->vals->cap_unix & ses->capabilities; -} - -struct cached_fid { - bool is_valid:1; /* Do we have a useable root fid */ - struct kref refcount; - struct cifs_fid *fid; - struct mutex fid_mutex; - struct cifs_tcon *tcon; - struct work_struct lease_break; -}; - -/* - * there is one of these for each connection to a resource on a particular - * session - */ -struct cifs_tcon { - struct list_head tcon_list; - int tc_count; - struct list_head rlist; /* reconnect list */ - atomic_t num_local_opens; /* num of all opens including disconnected */ - atomic_t num_remote_opens; /* num of all network opens on server */ - struct list_head openFileList; - spinlock_t open_file_lock; /* protects list above */ - struct cifs_ses *ses; /* pointer to session associated with */ - char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ - char *nativeFileSystem; - char *password; /* for share-level security */ - __u32 tid; /* The 4 byte tree id */ - __u16 Flags; /* optional support bits */ - enum statusEnum tidStatus; - atomic_t num_smbs_sent; - union { - struct { - atomic_t num_writes; - atomic_t num_reads; - atomic_t num_flushes; - atomic_t num_oplock_brks; - atomic_t num_opens; - atomic_t num_closes; - atomic_t num_deletes; - atomic_t num_mkdirs; - atomic_t num_posixopens; - atomic_t num_posixmkdirs; - atomic_t num_rmdirs; - atomic_t num_renames; - atomic_t num_t2renames; - atomic_t num_ffirst; - atomic_t num_fnext; - atomic_t num_fclose; - atomic_t num_hardlinks; - atomic_t num_symlinks; - atomic_t num_locks; - atomic_t num_acl_get; - atomic_t num_acl_set; - } cifs_stats; - struct { - atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; - atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; - } smb2_stats; - } stats; - __u64 bytes_read; - __u64 bytes_written; - spinlock_t stat_lock; /* protects the two fields above */ - FILE_SYSTEM_DEVICE_INFO fsDevInfo; - FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ - FILE_SYSTEM_UNIX_INFO fsUnixInfo; - bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ - bool pipe:1; /* set if connection to pipe share */ - bool print:1; /* set if connection to printer share */ - bool retry:1; - bool nocase:1; - bool nohandlecache:1; /* if strange server resource prob can turn off */ - bool seal:1; /* transport encryption for this mounted share */ - bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol - for this mount even if server would support */ - bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ - bool local_lease:1; /* check leases (only) on local system not remote */ - bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ - bool broken_sparse_sup; /* if server or share does not support sparse */ - bool need_reconnect:1; /* connection reset, tid now invalid */ - bool need_reopen_files:1; /* need to reopen tcon file handles */ - bool use_resilient:1; /* use resilient instead of durable handles */ - bool use_persistent:1; /* use persistent instead of durable handles */ - __le32 capabilities; - __u32 share_flags; - __u32 maximal_access; - __u32 vol_serial_number; - __le64 vol_create_time; - __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ - __u32 ss_flags; /* sector size flags */ - __u32 perf_sector_size; /* best sector size for perf */ - __u32 max_chunks; - __u32 max_bytes_chunk; - __u32 max_bytes_copy; -#ifdef CONFIG_CIFS_FSCACHE - u64 resource_id; /* server resource id */ - struct fscache_cookie *fscache; /* cookie for share */ -#endif - struct list_head pending_opens; /* list of incomplete opens */ - struct cached_fid crfid; /* Cached root fid */ - /* BB add field for back pointer to sb struct(s)? */ -#ifdef CONFIG_CIFS_DFS_UPCALL - char *dfs_path; - int remap:2; - struct list_head ulist; /* cache update list */ -#endif -}; - -/* - * This is a refcounted and timestamped container for a tcon pointer. The - * container holds a tcon reference. It is considered safe to free one of - * these when the tl_count goes to 0. The tl_time is the time of the last - * "get" on the container. - */ -struct tcon_link { - struct rb_node tl_rbnode; - kuid_t tl_uid; - unsigned long tl_flags; -#define TCON_LINK_MASTER 0 -#define TCON_LINK_PENDING 1 -#define TCON_LINK_IN_TREE 2 - unsigned long tl_time; - atomic_t tl_count; - struct cifs_tcon *tl_tcon; -}; - -extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); -extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); - -static inline struct cifs_tcon * -tlink_tcon(struct tcon_link *tlink) -{ - return tlink->tl_tcon; -} - -static inline struct tcon_link * -cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) -{ - return cifs_sb->master_tlink; -} - -extern void cifs_put_tlink(struct tcon_link *tlink); - -static inline struct tcon_link * -cifs_get_tlink(struct tcon_link *tlink) -{ - if (tlink && !IS_ERR(tlink)) - atomic_inc(&tlink->tl_count); - return tlink; -} - -/* This function is always expected to succeed */ -extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); - -#define CIFS_OPLOCK_NO_CHANGE 0xfe - -struct cifs_pending_open { - struct list_head olist; - struct tcon_link *tlink; - __u8 lease_key[16]; - __u32 oplock; -}; - -/* - * This info hangs off the cifsFileInfo structure, pointed to by llist. - * This is used to track byte stream locks on the file - */ -struct cifsLockInfo { - struct list_head llist; /* pointer to next cifsLockInfo */ - struct list_head blist; /* pointer to locks blocked on this */ - wait_queue_head_t block_q; - __u64 offset; - __u64 length; - __u32 pid; - __u16 type; - __u16 flags; -}; - -/* - * One of these for each open instance of a file - */ -struct cifs_search_info { - loff_t index_of_last_entry; - __u16 entries_in_buffer; - __u16 info_level; - __u32 resume_key; - char *ntwrk_buf_start; - char *srch_entries_start; - char *last_entry; - const char *presume_name; - unsigned int resume_name_len; - bool endOfSearch:1; - bool emptyDir:1; - bool unicode:1; - bool smallBuf:1; /* so we know which buf_release function to call */ -}; - -struct cifs_open_parms { - struct cifs_tcon *tcon; - struct cifs_sb_info *cifs_sb; - int disposition; - int desired_access; - int create_options; - const char *path; - struct cifs_fid *fid; - umode_t mode; - bool reconnect:1; -}; - -struct cifs_fid { - __u16 netfid; - __u64 persistent_fid; /* persist file id for smb2 */ - __u64 volatile_fid; /* volatile file id for smb2 */ - __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ - __u8 create_guid[16]; - struct cifs_pending_open *pending_open; - unsigned int epoch; -#ifdef CONFIG_CIFS_DEBUG2 - __u64 mid; -#endif /* CIFS_DEBUG2 */ - bool purge_cache; -}; - -struct cifs_fid_locks { - struct list_head llist; - struct cifsFileInfo *cfile; /* fid that owns locks */ - struct list_head locks; /* locks held by fid above */ -}; - -struct cifsFileInfo { - /* following two lists are protected by tcon->open_file_lock */ - struct list_head tlist; /* pointer to next fid owned by tcon */ - struct list_head flist; /* next fid (file instance) for this inode */ - /* lock list below protected by cifsi->lock_sem */ - struct cifs_fid_locks *llist; /* brlocks held by this fid */ - kuid_t uid; /* allows finding which FileInfo structure */ - __u32 pid; /* process id who opened file */ - struct cifs_fid fid; /* file id from remote */ - struct list_head rlist; /* reconnect list */ - /* BB add lock scope info here if needed */ ; - /* lock scope id (0 if none) */ - struct dentry *dentry; - struct tcon_link *tlink; - unsigned int f_flags; - bool invalidHandle:1; /* file closed via session abend */ - bool oplock_break_cancelled:1; - int count; - spinlock_t file_info_lock; /* protects four flag/count fields above */ - struct mutex fh_mutex; /* prevents reopen race after dead ses*/ - struct cifs_search_info srch_inf; - struct work_struct oplock_break; /* work for oplock breaks */ -}; - -struct cifs_io_parms { - __u16 netfid; - __u64 persistent_fid; /* persist file id for smb2 */ - __u64 volatile_fid; /* volatile file id for smb2 */ - __u32 pid; - __u64 offset; - unsigned int length; - struct cifs_tcon *tcon; -}; - -struct cifs_aio_ctx { - struct kref refcount; - struct list_head list; - struct mutex aio_mutex; - struct completion done; - struct iov_iter iter; - struct kiocb *iocb; - struct cifsFileInfo *cfile; - struct bio_vec *bv; - loff_t pos; - unsigned int npages; - ssize_t rc; - unsigned int len; - unsigned int total_len; - bool should_dirty; - /* - * Indicates if this aio_ctx is for direct_io, - * If yes, iter is a copy of the user passed iov_iter - */ - bool direct_io; -}; - -struct cifs_readdata; - -/* asynchronous read support */ -struct cifs_readdata { - struct kref refcount; - struct list_head list; - struct completion done; - struct cifsFileInfo *cfile; - struct address_space *mapping; - struct cifs_aio_ctx *ctx; - __u64 offset; - unsigned int bytes; - unsigned int got_bytes; - pid_t pid; - int result; - struct work_struct work; - int (*read_into_pages)(struct TCP_Server_Info *server, - struct cifs_readdata *rdata, - unsigned int len); - int (*copy_into_pages)(struct TCP_Server_Info *server, - struct cifs_readdata *rdata, - struct iov_iter *iter); - struct kvec iov[2]; -#ifdef CONFIG_CIFS_SMB_DIRECT - struct smbd_mr *mr; -#endif - unsigned int pagesz; - unsigned int page_offset; - unsigned int tailsz; - unsigned int credits; - unsigned int nr_pages; - struct page **pages; -}; - -struct cifs_writedata; - -/* asynchronous write support */ -struct cifs_writedata { - struct kref refcount; - struct list_head list; - struct completion done; - enum writeback_sync_modes sync_mode; - struct work_struct work; - struct cifsFileInfo *cfile; - struct cifs_aio_ctx *ctx; - __u64 offset; - pid_t pid; - unsigned int bytes; - int result; -#ifdef CONFIG_CIFS_SMB_DIRECT - struct smbd_mr *mr; -#endif - unsigned int pagesz; - unsigned int page_offset; - unsigned int tailsz; - unsigned int credits; - unsigned int nr_pages; - struct page **pages; -}; - -/* - * Take a reference on the file private data. Must be called with - * cfile->file_info_lock held. - */ -static inline void -cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) -{ - ++cifs_file->count; -} - -struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); -void cifsFileInfo_put(struct cifsFileInfo *cifs_file); - -#define CIFS_CACHE_READ_FLG 1 -#define CIFS_CACHE_HANDLE_FLG 2 -#define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) -#define CIFS_CACHE_WRITE_FLG 4 -#define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) -#define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) - -#define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) -#define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) -#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) - -/* - * One of these for each file inode - */ - -struct cifsInodeInfo { - bool can_cache_brlcks; - struct list_head llist; /* locks helb by this inode */ - struct rw_semaphore lock_sem; /* protect the fields above */ - /* BB add in lists for dirty pages i.e. write caching info for oplock */ - struct list_head openFileList; - __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ - unsigned int oplock; /* oplock/lease level we have */ - unsigned int epoch; /* used to track lease state changes */ -#define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ -#define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ -#define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ -#define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ -#define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ -#define CIFS_INO_LOCK (5) /* lock bit for synchronization */ - unsigned long flags; - spinlock_t writers_lock; - unsigned int writers; /* Number of writers on this inode */ - unsigned long time; /* jiffies of last update of inode */ - u64 server_eof; /* current file size on server -- protected by i_lock */ - u64 uniqueid; /* server inode number */ - u64 createtime; /* creation time on server */ - __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ -#ifdef CONFIG_CIFS_FSCACHE - struct fscache_cookie *fscache; -#endif - struct inode vfs_inode; -}; - -static inline struct cifsInodeInfo * -CIFS_I(struct inode *inode) -{ - return container_of(inode, struct cifsInodeInfo, vfs_inode); -} - -static inline struct cifs_sb_info * -CIFS_SB(struct super_block *sb) -{ - return sb->s_fs_info; -} - -static inline struct cifs_sb_info * -CIFS_FILE_SB(struct file *file) -{ - return CIFS_SB(file_inode(file)->i_sb); -} - -static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) -{ - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) - return '/'; - else - return '\\'; -} - -static inline void -convert_delimiter(char *path, char delim) -{ - char old_delim, *pos; - - if (delim == '/') - old_delim = '\\'; - else - old_delim = '/'; - - pos = path; - while ((pos = strchr(pos, old_delim))) - *pos = delim; -} - -#define cifs_stats_inc atomic_inc - -static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, - unsigned int bytes) -{ - if (bytes) { - spin_lock(&tcon->stat_lock); - tcon->bytes_written += bytes; - spin_unlock(&tcon->stat_lock); - } -} - -static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, - unsigned int bytes) -{ - spin_lock(&tcon->stat_lock); - tcon->bytes_read += bytes; - spin_unlock(&tcon->stat_lock); -} - - -/* - * This is the prototype for the mid receive function. This function is for - * receiving the rest of the SMB frame, starting with the WordCount (which is - * just after the MID in struct smb_hdr). Note: - * - * - This will be called by cifsd, with no locks held. - * - The mid will still be on the pending_mid_q. - * - mid->resp_buf will point to the current buffer. - * - * Returns zero on a successful receive, or an error. The receive state in - * the TCP_Server_Info will also be updated. - */ -typedef int (mid_receive_t)(struct TCP_Server_Info *server, - struct mid_q_entry *mid); - -/* - * This is the prototype for the mid callback function. This is called once the - * mid has been received off of the socket. When creating one, take special - * care to avoid deadlocks. Things to bear in mind: - * - * - it will be called by cifsd, with no locks held - * - the mid will be removed from any lists - */ -typedef void (mid_callback_t)(struct mid_q_entry *mid); - -/* - * This is the protopyte for mid handle function. This is called once the mid - * has been recognized after decryption of the message. - */ -typedef int (mid_handle_t)(struct TCP_Server_Info *server, - struct mid_q_entry *mid); - -/* one of these for every pending CIFS request to the server */ -struct mid_q_entry { - struct list_head qhead; /* mids waiting on reply from this server */ - struct kref refcount; - struct TCP_Server_Info *server; /* server corresponding to this mid */ - __u64 mid; /* multiplex id */ - __u32 pid; /* process id */ - __u32 sequence_number; /* for CIFS signing */ - unsigned long when_alloc; /* when mid was created */ -#ifdef CONFIG_CIFS_STATS2 - unsigned long when_sent; /* time when smb send finished */ - unsigned long when_received; /* when demux complete (taken off wire) */ -#endif - mid_receive_t *receive; /* call receive callback */ - mid_callback_t *callback; /* call completion callback */ - mid_handle_t *handle; /* call handle mid callback */ - void *callback_data; /* general purpose pointer for callback */ - void *resp_buf; /* pointer to received SMB header */ - unsigned int resp_buf_size; - int mid_state; /* wish this were enum but can not pass to wait_event */ - unsigned int mid_flags; - __le16 command; /* smb command code */ - unsigned int optype; /* operation type */ - bool large_buf:1; /* if valid response, is pointer to large buf */ - bool multiRsp:1; /* multiple trans2 responses for one request */ - bool multiEnd:1; /* both received */ - bool decrypted:1; /* decrypted entry */ -}; - -struct close_cancelled_open { - struct cifs_fid fid; - struct cifs_tcon *tcon; - struct work_struct work; -}; - -/* Make code in transport.c a little cleaner by moving - update of optional stats into function below */ -#ifdef CONFIG_CIFS_STATS2 - -static inline void cifs_in_send_inc(struct TCP_Server_Info *server) -{ - atomic_inc(&server->in_send); -} - -static inline void cifs_in_send_dec(struct TCP_Server_Info *server) -{ - atomic_dec(&server->in_send); -} - -static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) -{ - atomic_inc(&server->num_waiters); -} - -static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) -{ - atomic_dec(&server->num_waiters); -} - -static inline void cifs_save_when_sent(struct mid_q_entry *mid) -{ - mid->when_sent = jiffies; -} -#else -static inline void cifs_in_send_inc(struct TCP_Server_Info *server) -{ -} -static inline void cifs_in_send_dec(struct TCP_Server_Info *server) -{ -} - -static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) -{ -} - -static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) -{ -} - -static inline void cifs_save_when_sent(struct mid_q_entry *mid) -{ -} -#endif - -/* for pending dnotify requests */ -struct dir_notify_req { - struct list_head lhead; - __le16 Pid; - __le16 PidHigh; - __u16 Mid; - __u16 Tid; - __u16 Uid; - __u16 netfid; - __u32 filter; /* CompletionFilter (for multishot) */ - int multishot; - struct file *pfile; -}; - -struct dfs_info3_param { - int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ - int path_consumed; - int server_type; - int ref_flag; - char *path_name; - char *node_name; - int ttl; -}; - -/* - * common struct for holding inode info when searching for or updating an - * inode with new info - */ - -#define CIFS_FATTR_DFS_REFERRAL 0x1 -#define CIFS_FATTR_DELETE_PENDING 0x2 -#define CIFS_FATTR_NEED_REVAL 0x4 -#define CIFS_FATTR_INO_COLLISION 0x8 -#define CIFS_FATTR_UNKNOWN_NLINK 0x10 -#define CIFS_FATTR_FAKE_ROOT_INO 0x20 - -struct cifs_fattr { - u32 cf_flags; - u32 cf_cifsattrs; - u64 cf_uniqueid; - u64 cf_eof; - u64 cf_bytes; - u64 cf_createtime; - kuid_t cf_uid; - kgid_t cf_gid; - umode_t cf_mode; - dev_t cf_rdev; - unsigned int cf_nlink; - unsigned int cf_dtype; - struct timespec64 cf_atime; - struct timespec64 cf_mtime; - struct timespec64 cf_ctime; -}; - -static inline void free_dfs_info_param(struct dfs_info3_param *param) -{ - if (param) { - kfree(param->path_name); - kfree(param->node_name); - } -} - -static inline void free_dfs_info_array(struct dfs_info3_param *param, - int number_of_items) -{ - int i; - if ((number_of_items == 0) || (param == NULL)) - return; - for (i = 0; i < number_of_items; i++) { - kfree(param[i].path_name); - kfree(param[i].node_name); - } - kfree(param); -} - -static inline bool is_interrupt_error(int error) -{ - switch (error) { - case -EINTR: - case -ERESTARTSYS: - case -ERESTARTNOHAND: - case -ERESTARTNOINTR: - return true; - } - return false; -} - -static inline bool is_retryable_error(int error) -{ - if (is_interrupt_error(error) || error == -EAGAIN) - return true; - return false; -} - -#define MID_FREE 0 -#define MID_REQUEST_ALLOCATED 1 -#define MID_REQUEST_SUBMITTED 2 -#define MID_RESPONSE_RECEIVED 4 -#define MID_RETRY_NEEDED 8 /* session closed while this request out */ -#define MID_RESPONSE_MALFORMED 0x10 -#define MID_SHUTDOWN 0x20 - -/* Flags */ -#define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ -#define MID_DELETED 2 /* Mid has been dequeued/deleted */ - -/* Types of response buffer returned from SendReceive2 */ -#define CIFS_NO_BUFFER 0 /* Response buffer not returned */ -#define CIFS_SMALL_BUFFER 1 -#define CIFS_LARGE_BUFFER 2 -#define CIFS_IOVEC 4 /* array of response buffers */ - -/* Type of Request to SendReceive2 */ -#define CIFS_BLOCKING_OP 1 /* operation can block */ -#define CIFS_ASYNC_OP 2 /* do not wait for response */ -#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ -#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ -#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ -#define CIFS_NO_RESP 0x040 /* no response buffer required */ - -/* Type of request operation */ -#define CIFS_ECHO_OP 0x080 /* echo request */ -#define CIFS_OBREAK_OP 0x0100 /* oplock break request */ -#define CIFS_NEG_OP 0x0200 /* negotiate request */ -#define CIFS_OP_MASK 0x0380 /* mask request type */ - -#define CIFS_HAS_CREDITS 0x0400 /* already has credits */ -#define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ - -/* Security Flags: indicate type of session setup needed */ -#define CIFSSEC_MAY_SIGN 0x00001 -#define CIFSSEC_MAY_NTLM 0x00002 -#define CIFSSEC_MAY_NTLMV2 0x00004 -#define CIFSSEC_MAY_KRB5 0x00008 -#ifdef CONFIG_CIFS_WEAK_PW_HASH -#define CIFSSEC_MAY_LANMAN 0x00010 -#define CIFSSEC_MAY_PLNTXT 0x00020 -#else -#define CIFSSEC_MAY_LANMAN 0 -#define CIFSSEC_MAY_PLNTXT 0 -#endif /* weak passwords */ -#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ -#define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ - -#define CIFSSEC_MUST_SIGN 0x01001 -/* note that only one of the following can be set so the -result of setting MUST flags more than once will be to -require use of the stronger protocol */ -#define CIFSSEC_MUST_NTLM 0x02002 -#define CIFSSEC_MUST_NTLMV2 0x04004 -#define CIFSSEC_MUST_KRB5 0x08008 -#ifdef CONFIG_CIFS_WEAK_PW_HASH -#define CIFSSEC_MUST_LANMAN 0x10010 -#define CIFSSEC_MUST_PLNTXT 0x20020 -#ifdef CONFIG_CIFS_UPCALL -#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ -#else -#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ -#endif /* UPCALL */ -#else /* do not allow weak pw hash */ -#define CIFSSEC_MUST_LANMAN 0 -#define CIFSSEC_MUST_PLNTXT 0 -#ifdef CONFIG_CIFS_UPCALL -#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ -#else -#define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ -#endif /* UPCALL */ -#endif /* WEAK_PW_HASH */ -#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ -#define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ - -#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) -#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) -#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) -/* - ***************************************************************** - * All constants go here - ***************************************************************** - */ - -#define UID_HASH (16) - -/* - * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the - * following to be declared. - */ - -/**************************************************************************** - * Locking notes. All updates to global variables and lists should be - * protected by spinlocks or semaphores. - * - * Spinlocks - * --------- - * GlobalMid_Lock protects: - * list operations on pending_mid_q and oplockQ - * updates to XID counters, multiplex id and SMB sequence numbers - * tcp_ses_lock protects: - * list operations on tcp and SMB session lists - * tcon->open_file_lock protects the list of open files hanging off the tcon - * cfile->file_info_lock protects counters and fields in cifs file struct - * f_owner.lock protects certain per file struct operations - * mapping->page_lock protects certain per page operations - * - * Semaphores - * ---------- - * sesSem operations on smb session - * tconSem operations on tree connection - * fh_sem file handle reconnection operations - * - ****************************************************************************/ - -#ifdef DECLARE_GLOBALS_HERE -#define GLOBAL_EXTERN -#else -#define GLOBAL_EXTERN extern -#endif - -/* - * the list of TCP_Server_Info structures, ie each of the sockets - * connecting our client to a distinct server (ip address), is - * chained together by cifs_tcp_ses_list. The list of all our SMB - * sessions (and from that the tree connections) can be found - * by iterating over cifs_tcp_ses_list - */ -GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; - -/* - * This lock protects the cifs_tcp_ses_list, the list of smb sessions per - * tcp session, and the list of tcon's per smb session. It also protects - * the reference counters for the server, smb session, and tcon. Finally, - * changes to the tcon->tidStatus should be done while holding this lock. - * generally the locks should be taken in order tcp_ses_lock before - * tcon->open_file_lock and that before file->file_info_lock since the - * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file - */ -GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; - -#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ -/* Outstanding dir notify requests */ -GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; -/* DirNotify response queue */ -GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; -#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ - -/* - * Global transaction id (XID) information - */ -GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ -GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ -GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ -GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ - /* on midQ entries */ -/* - * Global counters, updated atomically - */ -GLOBAL_EXTERN atomic_t sesInfoAllocCount; -GLOBAL_EXTERN atomic_t tconInfoAllocCount; -GLOBAL_EXTERN atomic_t tcpSesAllocCount; -GLOBAL_EXTERN atomic_t tcpSesReconnectCount; -GLOBAL_EXTERN atomic_t tconInfoReconnectCount; - -/* Various Debug counters */ -GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ -#ifdef CONFIG_CIFS_STATS2 -GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ -GLOBAL_EXTERN atomic_t totSmBufAllocCount; -extern unsigned int slow_rsp_threshold; /* number of secs before logging */ -#endif -GLOBAL_EXTERN atomic_t smBufAllocCount; -GLOBAL_EXTERN atomic_t midCount; - -/* Misc globals */ -extern bool enable_oplocks; /* enable or disable oplocks */ -extern bool lookupCacheEnabled; -extern unsigned int global_secflags; /* if on, session setup sent - with more secure ntlmssp2 challenge/resp */ -extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ -extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ -extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ -extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ -extern unsigned int cifs_min_small; /* min size of small buf pool */ -extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ -extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ - -#ifdef CONFIG_CIFS_ACL -GLOBAL_EXTERN struct rb_root uidtree; -GLOBAL_EXTERN struct rb_root gidtree; -GLOBAL_EXTERN spinlock_t siduidlock; -GLOBAL_EXTERN spinlock_t sidgidlock; -GLOBAL_EXTERN struct rb_root siduidtree; -GLOBAL_EXTERN struct rb_root sidgidtree; -GLOBAL_EXTERN spinlock_t uidsidlock; -GLOBAL_EXTERN spinlock_t gidsidlock; -#endif /* CONFIG_CIFS_ACL */ - -void cifs_oplock_break(struct work_struct *work); - -extern const struct slow_work_ops cifs_oplock_break_ops; -extern struct workqueue_struct *cifsiod_wq; -extern struct workqueue_struct *cifsoplockd_wq; -extern __u32 cifs_lock_secret; - -extern mempool_t *cifs_mid_poolp; - -/* Operations for different SMB versions */ -#define SMB1_VERSION_STRING "1.0" -extern struct smb_version_operations smb1_operations; -extern struct smb_version_values smb1_values; -#define SMB20_VERSION_STRING "2.0" -extern struct smb_version_operations smb20_operations; -extern struct smb_version_values smb20_values; -#define SMB21_VERSION_STRING "2.1" -extern struct smb_version_operations smb21_operations; -extern struct smb_version_values smb21_values; -#define SMBDEFAULT_VERSION_STRING "default" -extern struct smb_version_values smbdefault_values; -#define SMB3ANY_VERSION_STRING "3" -extern struct smb_version_values smb3any_values; -#define SMB30_VERSION_STRING "3.0" -extern struct smb_version_operations smb30_operations; -extern struct smb_version_values smb30_values; -#define SMB302_VERSION_STRING "3.02" -#define ALT_SMB302_VERSION_STRING "3.0.2" -/*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ -extern struct smb_version_values smb302_values; -#define SMB311_VERSION_STRING "3.1.1" -#define ALT_SMB311_VERSION_STRING "3.11" -extern struct smb_version_operations smb311_operations; -extern struct smb_version_values smb311_values; -#endif /* _CIFS_GLOB_H */ |