diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/cifs/cifsglob.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/cifs/cifsglob.h | 1078 |
1 files changed, 0 insertions, 1078 deletions
diff --git a/ANDROID_3.4.5/fs/cifs/cifsglob.h b/ANDROID_3.4.5/fs/cifs/cifsglob.h deleted file mode 100644 index 73fea285..00000000 --- a/ANDROID_3.4.5/fs/cifs/cifsglob.h +++ /dev/null @@ -1,1078 +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/workqueue.h> -#include "cifs_fs_sb.h" -#include "cifsacl.h" -#include <crypto/internal/hash.h> -#include <linux/scatterlist.h> - -/* - * 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 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) -#define MAX_SERVER_SIZE 15 -#define MAX_SHARE_SIZE 80 -#define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ -#define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ - -#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) - -/* currently length of NIP6_FMT */ -#define SERVER_NAME_LENGTH 40 -#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) - -/* used to define string lengths for reversing unicode strings */ -/* (256+1)*2 = 514 */ -/* (max path length + 1 for null) * 2 for unicode */ -#define MAX_NAME 514 - -#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 { - LANMAN = 0, /* Legacy LANMAN auth */ - NTLM, /* Legacy NTLM012 auth with NTLM hash */ - NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ - RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ -/* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ - Kerberos, /* Kerberos via SPNEGO */ -}; - -enum protocolEnum { - TCP = 0, - SCTP - /* Netbios frames protocol not supported at this time */ -}; - -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 sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ - struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ -}; - -/* per smb session structure/fields */ -struct ntlmssp_auth { - __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 - ***************************************************************** - */ - -struct smb_vol { - char *username; - char *password; - char *domainname; - char *UNC; - char *UNCip; - 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 */ - uid_t cred_uid; - uid_t linux_uid; - gid_t linux_gid; - uid_t backupuid; - gid_t backupgid; - umode_t file_mode; - umode_t dir_mode; - unsigned secFlg; - bool retry:1; - bool intr:1; - bool setuids: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 posix_paths:1; /* unset to not ask for posix pathnames. */ - bool no_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 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 */ - unsigned int rsize; - unsigned int wsize; - bool sockopt_tcp_nodelay:1; - unsigned short int port; - unsigned long actimeo; /* attribute cache timeout (jiffies) */ - char *prepath; - struct sockaddr_storage srcaddr; /* allow binding to a local IP */ - struct nls_table *local_nls; -}; - -#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_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 (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ - MS_NODEV | MS_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)); -} - -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]; - 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; - int credits; /* send no more requests at once */ - 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]; - char sec_mode; - bool session_estab; /* mark when very first sess is established */ - u16 dialect; /* dialect index that server chose */ - enum securityEnum secType; - 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 */ - 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 max_vcs; /* maximum number of smb sessions, at least - those that can be specified uniquely with - vcnumbers */ - int capabilities; /* allow 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 */ - 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 */ - /* 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? */ - struct delayed_work echo; /* echo ping workqueue job */ - struct kvec *iov; /* reusable kvec array for receives */ - unsigned int nr_iov; /* number of kvecs in array */ - char *smallbuf; /* pointer to current "small" buffer */ - char *bigbuf; /* pointer to current "big" buffer */ - 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 */ -#endif -}; - -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 int* -get_credits_field(struct TCP_Server_Info *server) -{ - /* - * This will change to switch statement when we reserve slots for echos - * and oplock breaks. - */ - return &server->credits; -} - -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 size_t -header_size(void) -{ - return sizeof(struct smb_hdr); -} - -static inline size_t -max_header_size(void) -{ - return MAX_CIFS_HDR_SIZE; -} - -/* - * 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 - -/* - * 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 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 */ - __u16 ipc_tid; /* special tid for connection to IPC share */ - __u16 flags; - __u16 vcnum; - char *serverOS; /* name of operating system underlying server */ - char *serverNOS; /* name of network operating system of server */ - char *serverDomain; /* security realm of server */ - int Suid; /* remote smb uid */ - uid_t linux_uid; /* overriding owner of files on the mount */ - uid_t cred_uid; /* owner of credentials */ - int capabilities; - char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for - TCP names - will ipv6 and sctp addresses fit? */ - 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 */ - bool need_reconnect:1; /* connection reset, uid now invalid */ -}; -/* no more than one of the following three session flags may be set */ -#define CIFS_SES_NT4 1 -#define CIFS_SES_OS2 2 -#define CIFS_SES_W9X 4 -/* following flag is set for old servers such as OS2 (and Win95?) - which do not negotiate NTLM or POSIX dialects, but instead - negotiate one of the older LANMAN dialects */ -#define CIFS_SES_LANMAN 8 -/* - * 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 openFileList; - 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 */ - __u16 tid; /* The 2 byte tree id */ - __u16 Flags; /* optional support bits */ - enum statusEnum tidStatus; -#ifdef CONFIG_CIFS_STATS - atomic_t num_smbs_sent; - 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; -#ifdef CONFIG_CIFS_STATS2 - unsigned long long time_writes; - unsigned long long time_reads; - unsigned long long time_opens; - unsigned long long time_deletes; - unsigned long long time_closes; - unsigned long long time_mkdirs; - unsigned long long time_rmdirs; - unsigned long long time_renames; - unsigned long long time_t2renames; - unsigned long long time_ffirst; - unsigned long long time_fnext; - unsigned long long time_fclose; -#endif /* CONFIG_CIFS_STATS2 */ - __u64 bytes_read; - __u64 bytes_written; - spinlock_t stat_lock; -#endif /* CONFIG_CIFS_STATS */ - 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$ eg for RPC/PIPES */ - bool retry:1; - bool nocase:1; - 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 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 need_reconnect:1; /* connection reset, tid now invalid */ -#ifdef CONFIG_CIFS_FSCACHE - u64 resource_id; /* server resource id */ - struct fscache_cookie *fscache; /* cookie for share */ -#endif - /* BB add field for back pointer to sb struct(s)? */ -}; - -/* - * 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; - uid_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); - -static inline struct cifs_tcon * -tlink_tcon(struct tcon_link *tlink) -{ - return tlink->tl_tcon; -} - -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); - -/* - * 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; - __u8 type; - __u16 netfid; -}; - -/* - * 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 cifsFileInfo { - struct list_head tlist; /* pointer to next fid owned by tcon */ - struct list_head flist; /* next fid (file instance) for this inode */ - unsigned int uid; /* allows finding which FileInfo structure */ - __u32 pid; /* process id who opened file */ - __u16 netfid; /* file id from remote */ - /* BB add lock scope info here if needed */ ; - /* lock scope id (0 if none) */ - struct dentry *dentry; - unsigned int f_flags; - struct tcon_link *tlink; - bool invalidHandle:1; /* file closed via session abend */ - bool oplock_break_cancelled:1; - int count; /* refcount protected by cifs_file_list_lock */ - 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; - __u32 pid; - __u64 offset; - unsigned int length; - struct cifs_tcon *tcon; -}; - -/* - * Take a reference on the file private data. Must be called with - * cifs_file_list_lock held. - */ -static inline -struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file) -{ - ++cifs_file->count; - return cifs_file; -} - -void cifsFileInfo_put(struct cifsFileInfo *cifs_file); - -/* - * One of these for each file inode - */ - -struct cifsInodeInfo { - struct list_head llist; /* brlocks for this inode */ - bool can_cache_brlcks; - struct mutex lock_mutex; /* protect two 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 */ - bool clientCanCacheRead; /* read oplock */ - bool clientCanCacheAll; /* read and writebehind oplock */ - bool delete_pending; /* DELETE_ON_CLOSE is set */ - bool invalid_mapping; /* pagecache is invalid */ - 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 */ -#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 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) -{ - int i; - char old_delim; - - if (path == NULL) - return; - - if (delim == '/') - old_delim = '\\'; - else - old_delim = '/'; - - for (i = 0; path[i] != '\0'; i++) { - if (path[i] == old_delim) - path[i] = delim; - } -} - -#ifdef CONFIG_CIFS_STATS -#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); -} -#else - -#define cifs_stats_inc(field) do {} while (0) -#define cifs_stats_bytes_written(tcon, bytes) do {} while (0) -#define cifs_stats_bytes_read(tcon, bytes) do {} while (0) - -#endif - -struct mid_q_entry; - -/* - * 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); - -/* 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 */ - __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 */ - void *callback_data; /* general purpose pointer for callback */ - void *resp_buf; /* pointer to received SMB header */ - int mid_state; /* wish this were enum but can not pass to wait_event */ - __le16 command; /* smb command code */ - 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 */ -}; - -/* 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; -}; - -/* - * 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 - -struct cifs_fattr { - u32 cf_flags; - u32 cf_cifsattrs; - u64 cf_uniqueid; - u64 cf_eof; - u64 cf_bytes; - u64 cf_createtime; - uid_t cf_uid; - gid_t cf_gid; - umode_t cf_mode; - dev_t cf_rdev; - unsigned int cf_nlink; - unsigned int cf_dtype; - struct timespec cf_atime; - struct timespec cf_mtime; - struct timespec cf_ctime; -}; - -static inline void free_dfs_info_param(struct dfs_info3_param *param) -{ - if (param) { - kfree(param->path_name); - kfree(param->node_name); - kfree(param); - } -} - -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); -} - -#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 - -/* 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 */ - -/* 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_NTLM | CIFSSEC_MAY_NTLMV2) -#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 - * cifs_file_list_lock protects: - * list operations on tcp and SMB session lists and tCon lists - * 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. - */ -GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; - -/* - * This lock protects the cifs_file->llist and cifs_file->flist - * list operations, and updates to some flags (cifs_file->invalidHandle) - * It will be moved to either use the tcon->stat_lock or equivalent later. - * If cifs_tcp_ses_lock and the lock below are both needed to be held, then - * the cifs_tcp_ses_lock must be grabbed first and released last. - */ -GLOBAL_EXTERN spinlock_t cifs_file_list_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; -#endif -GLOBAL_EXTERN atomic_t smBufAllocCount; -GLOBAL_EXTERN atomic_t midCount; - -/* Misc globals */ -GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions - to be established on existing mount if we - have the uid/password or Kerberos credential - or equivalent for current user */ -/* enable or disable oplocks */ -GLOBAL_EXTERN bool enable_oplocks; -GLOBAL_EXTERN unsigned int lookupCacheEnabled; -GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent - with more secure ntlmssp2 challenge/resp */ -GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ -GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ -GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ -GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ -GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ -GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ - -#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; - -#endif /* _CIFS_GLOB_H */ |