diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 790 |
1 files changed, 676 insertions, 114 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 76e7d8b6da1..de6aed8c78e 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -22,11 +22,18 @@ #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> +#ifdef CONFIG_CIFS_SMB2 +#include "smb2pdu.h" +#endif + +#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ /* * The sizes of various internal tables and strings @@ -35,14 +42,11 @@ #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 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) */ @@ -55,14 +59,9 @@ /* * MAX_REQ is the maximum number of requests that WE will send - * on one socket concurrently. It also matches the most common - * value of max multiplex returned by servers. We may - * eventually want to use the negotiated value (in case - * future servers can handle more) when we are more confident that - * we will not have problems oveloading the socket with pending - * write data. + * on one socket concurrently. */ -#define CIFS_MAX_REQ 50 +#define CIFS_MAX_REQ 32767 #define RFC1001_NAME_LEN 15 #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) @@ -76,6 +75,9 @@ /* (max path length + 1 for null) * 2 for unicode */ #define MAX_NAME 514 +/* SMB echo "timeout" -- FIXME: tunable? */ +#define SMB_ECHO_INTERVAL (60 * HZ) + #include "cifspdu.h" #ifndef XATTR_DOS_ATTRIB @@ -96,20 +98,14 @@ enum statusEnum { }; enum securityEnum { - LANMAN = 0, /* Legacy LANMAN auth */ + 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 */ -/* 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; @@ -125,12 +121,17 @@ struct sdesc { 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 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 */ }; /* 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 */ @@ -155,23 +156,296 @@ struct cifs_cred { ***************************************************************** */ +/* + * 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_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, +}; + +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 *, void *, + 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 */ + unsigned int (*read_data_length)(char *); + /* 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 *); + 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); + bool (*is_oplock_break)(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 (*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 cifsFileInfo *, + struct cifs_io_parms *, unsigned int *, char **, + int *); + /* sync write to the server */ + int (*sync_write)(const unsigned int, struct cifsFileInfo *, + 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 *); + /* check for STATUS_PENDING and process it in a positive case */ + bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); + /* 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 (*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 *, u8); + /* parse lease context buffer and return oplock/epoch info */ + __u8 (*parse_lease_buf)(void *, unsigned int *); + int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file, + 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, const struct nls_table *, int); + int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, + const char *, const void *, const __u16, + const struct nls_table *, int); + 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); +}; + +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_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 *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; + 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; - unsigned secFlg; + 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; @@ -205,12 +479,15 @@ struct smb_vol { bool mfsymlinks:1; /* use Minshall+French Symlinks */ bool multiuser:1; bool rwpidforward:1; /* pid forward for read/write operations */ + bool nosharesock; unsigned int rsize; unsigned int wsize; bool sockopt_tcp_nodelay:1; - unsigned short int port; 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; }; @@ -235,12 +512,26 @@ struct cifs_mnt_data { 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; @@ -255,14 +546,23 @@ struct TCP_Server_Info { bool noblocksnd; /* use blocking sendmsg */ bool noautotune; /* do not autotune send buf sizes */ bool tcp_nodelay; - atomic_t inFlight; /* number of requests on the wire to server */ + 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; + __u16 sec_mode; + bool sign; /* is signing enabled on this connection? */ bool session_estab; /* mark when very first sess is established */ +#ifdef CONFIG_CIFS_SMB2 + 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 */ +#endif 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 */ @@ -273,12 +573,9 @@ struct TCP_Server_Info { 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 */ + unsigned int capabilities; /* selective disabling of caps by smb sess */ int timeAdj; /* Adjust for difference in server time zone in sec */ - __u16 CurrentMid; /* multiplex id - rotating counter */ + __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]; @@ -286,6 +583,10 @@ struct TCP_Server_Info { 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 */ @@ -305,8 +606,119 @@ struct TCP_Server_Info { atomic_t in_send; /* requests trying to send */ atomic_t num_waiters; /* blocked waiting to get in sendrecv */ #endif +#ifdef CONFIG_CIFS_SMB2 + unsigned int max_read; + unsigned int max_write; +#endif /* CONFIG_CIFS_SMB2 */ }; +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 +set_credits(struct TCP_Server_Info *server, const int val) +{ + server->ops->set_credits(server, val); +} + +static inline __u64 +get_next_mid64(struct TCP_Server_Info *server) +{ + return server->ops->get_next_mid(server); +} + +static inline __le16 +get_next_mid(struct TCP_Server_Info *server) +{ + __u16 mid = get_next_mid64(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_CACHE_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_CACHE_SIZE == 4k, this means we can fill + * a single wsize request with a single call. + */ +#define CIFS_DEFAULT_IOSIZE (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. @@ -349,15 +761,13 @@ struct cifs_ses { 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; + __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 * 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 @@ -366,16 +776,21 @@ struct cifs_ses { 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 */ +#ifdef CONFIG_CIFS_SMB2 + __u16 session_flags; + char smb3signingkey[SMB3_SIGN_KEY_SIZE]; /* for signing smb3 packets */ +#endif /* CONFIG_CIFS_SMB2 */ }; -/* 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 + +static inline bool +cap_unix(struct cifs_ses *ses) +{ + return ses->server->vals->cap_unix & ses->capabilities; +} + /* * there is one of these for each connection to a resource on a particular * session @@ -388,32 +803,42 @@ struct cifs_tcon { 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 */ + __u32 tid; /* The 4 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; + 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; +#ifdef CONFIG_CIFS_SMB2 + struct { + atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; + atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; + } smb2_stats; +#endif /* CONFIG_CIFS_SMB2 */ + } stats; #ifdef CONFIG_CIFS_STATS2 unsigned long long time_writes; unsigned long long time_reads; @@ -444,10 +869,25 @@ struct cifs_tcon { 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_SMB2 + bool print:1; /* set if connection to printer share */ + bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ + __le32 capabilities; + __u32 share_flags; + __u32 maximal_access; + __u32 vol_serial_number; + __le64 vol_create_time; + __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; +#endif /* CONFIG_CIFS_SMB2 */ #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 */ /* BB add field for back pointer to sb struct(s)? */ }; @@ -459,7 +899,7 @@ struct cifs_tcon { */ struct tcon_link { struct rb_node tl_rbnode; - uid_t tl_uid; + kuid_t tl_uid; unsigned long tl_flags; #define TCON_LINK_MASTER 0 #define TCON_LINK_PENDING 1 @@ -490,6 +930,15 @@ cifs_get_tlink(struct tcon_link *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 @@ -501,8 +950,7 @@ struct cifsLockInfo { __u64 offset; __u64 length; __u32 pid; - __u8 type; - __u16 netfid; + __u32 type; }; /* @@ -524,12 +972,42 @@ struct cifs_search_info { 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; + bool reconnect:1; +}; + +struct cifs_fid { + __u16 netfid; +#ifdef CONFIG_CIFS_SMB2 + __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 */ +#endif + struct cifs_pending_open *pending_open; + unsigned int epoch; + 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 { 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 */ + 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 */ - __u16 netfid; /* file id from remote */ + struct cifs_fid fid; /* file id from remote */ /* BB add lock scope info here if needed */ ; /* lock scope id (0 if none) */ struct dentry *dentry; @@ -545,42 +1023,113 @@ struct cifsFileInfo { struct cifs_io_parms { __u16 netfid; +#ifdef CONFIG_CIFS_SMB2 + __u64 persistent_fid; /* persist file id for smb2 */ + __u64 volatile_fid; /* volatile file id for smb2 */ +#endif __u32 pid; __u64 offset; unsigned int length; struct cifs_tcon *tcon; }; +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; + __u64 offset; + unsigned int 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); + struct kvec iov; + unsigned int pagesz; + unsigned int tailsz; + 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; + __u64 offset; + pid_t pid; + unsigned int bytes; + int result; + unsigned int pagesz; + unsigned int tailsz; + unsigned int nr_pages; + struct page *pages[]; +}; + /* * Take a reference on the file private data. Must be called with * cifs_file_list_lock held. */ -static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) +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 { - struct list_head llist; /* brlocks for this inode */ bool can_cache_brlcks; - struct mutex lock_mutex; /* protect two fields above */ + 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 */ - 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 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 */ + 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_SMB2 + __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ +#endif #ifdef CONFIG_CIFS_FSCACHE struct fscache_cookie *fscache; #endif @@ -610,21 +1159,16 @@ static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) static inline void convert_delimiter(char *path, char delim) { - int i; - char old_delim; - - if (path == NULL) - return; + char old_delim, *pos; if (delim == '/') old_delim = '\\'; else old_delim = '/'; - for (i = 0; path[i] != '\0'; i++) { - if (path[i] == old_delim) - path[i] = delim; - } + pos = path; + while ((pos = strchr(pos, old_delim))) + *pos = delim; } #ifdef CONFIG_CIFS_STATS @@ -655,7 +1199,6 @@ static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, #endif -struct mid_q_entry; /* * This is the prototype for the mid receive function. This function is for @@ -685,8 +1228,9 @@ 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 */ - __u16 mid; /* multiplex id */ - __u16 pid; /* process id */ + 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 @@ -696,10 +1240,10 @@ struct mid_q_entry { mid_receive_t *receive; /* call receive callback */ mid_callback_t *callback; /* call completion callback */ void *callback_data; /* general purpose pointer for callback */ - struct smb_hdr *resp_buf; /* pointer to received SMB header */ - int midState; /* wish this were enum but can not pass to wait_event */ - __u8 command; /* smb command code */ - bool largeBuf:1; /* if valid response, is pointer to large buf */ + 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 */ }; @@ -785,6 +1329,7 @@ struct dfs_info3_param { #define CIFS_FATTR_DELETE_PENDING 0x2 #define CIFS_FATTR_NEED_REVAL 0x4 #define CIFS_FATTR_INO_COLLISION 0x8 +#define CIFS_FATTR_UNKNOWN_NLINK 0x10 struct cifs_fattr { u32 cf_flags; @@ -793,8 +1338,8 @@ struct cifs_fattr { u64 cf_eof; u64 cf_bytes; u64 cf_createtime; - uid_t cf_uid; - gid_t cf_gid; + kuid_t cf_uid; + kgid_t cf_gid; umode_t cf_mode; dev_t cf_rdev; unsigned int cf_nlink; @@ -848,6 +1393,12 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param, #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 */ + /* Security Flags: indicate type of session setup needed */ #define CIFSSEC_MAY_SIGN 0x00001 #define CIFSSEC_MAY_NTLM 0x00002 @@ -890,7 +1441,7 @@ require use of the stronger protocol */ #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_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) /* @@ -994,12 +1545,7 @@ 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 bool enable_oplocks; /* enable or disable oplocks */ GLOBAL_EXTERN unsigned int lookupCacheEnabled; GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent with more secure ntlmssp2 challenge/resp */ @@ -1010,9 +1556,6 @@ 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*/ -/* reconnect after this many failed echo attempts */ -GLOBAL_EXTERN unsigned short echo_retries; - #ifdef CONFIG_CIFS_ACL GLOBAL_EXTERN struct rb_root uidtree; GLOBAL_EXTERN struct rb_root gidtree; @@ -1027,5 +1570,24 @@ GLOBAL_EXTERN spinlock_t gidsidlock; 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 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 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" +/*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ +extern struct smb_version_values smb302_values; #endif /* _CIFS_GLOB_H */ |