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-rw-r--r--fs/cifs/cifsglob.h474
1 files changed, 417 insertions, 57 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 6df0cbe1cbc..e6899cea1c3 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -22,11 +22,17 @@
#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>
+#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
@@ -72,6 +78,9 @@
/* (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
@@ -121,8 +130,10 @@ 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 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 */
};
/* per smb session structure/fields */
@@ -151,29 +162,60 @@ 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,
};
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 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 */
- int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int,
- struct mid_q_entry **);
+ 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);
+ 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 *);
+ 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 *);
@@ -184,13 +226,155 @@ struct smb_version_operations {
/* 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 *);
/* verify the message */
int (*check_message)(char *, unsigned int);
bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
+ /* 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 *);
+ /* 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);
+ /* 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 *);
+ /* open a file for non-posix mounts */
+ int (*open)(const unsigned int, struct cifs_tcon *, const char *, int,
+ int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *,
+ struct cifs_sb_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 *);
+ /* 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 *fid);
+ /* set lease key of the inode */
+ void (*set_lease_key)(struct inode *, struct cifs_fid *fid);
+ /* generate new lease key */
+ void (*new_lease_key)(struct cifs_fid *fid);
+ int (*calc_signature)(struct smb_rqst *rqst,
+ struct TCP_Server_Info *server);
};
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;
@@ -198,6 +382,11 @@ struct smb_version_values {
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;
+ unsigned int oplock_read;
};
#define HEADER_SIZE(server) (server->vals->header_size)
@@ -208,7 +397,6 @@ struct smb_vol {
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 */
@@ -256,11 +444,11 @@ struct smb_vol {
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;
};
@@ -291,6 +479,12 @@ get_rfc1002_length(void *buf)
return be32_to_cpu(*((__be32 *)buf));
}
+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;
@@ -319,8 +513,13 @@ struct TCP_Server_Info {
struct mutex srv_mutex;
struct task_struct *tsk;
char server_GUID[16];
- char sec_mode;
+ __u16 sec_mode;
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 */
+#endif
u16 dialect; /* dialect index that server chose */
enum securityEnum secType;
bool oplocks:1; /* enable oplocks */
@@ -337,7 +536,7 @@ struct TCP_Server_Info {
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 */
__u64 CurrentMid; /* multiplex id - rotating counter */
char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
@@ -366,6 +565,10 @@ 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
@@ -389,9 +592,10 @@ has_credits(struct TCP_Server_Info *server, int *credits)
}
static inline void
-add_credits(struct TCP_Server_Info *server, const unsigned int add)
+add_credits(struct TCP_Server_Info *server, const unsigned int add,
+ const int optype)
{
- server->ops->add_credits(server, add);
+ server->ops->add_credits(server, add, optype);
}
static inline void
@@ -407,6 +611,51 @@ get_next_mid(struct TCP_Server_Info *server)
}
/*
+ * 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.
*/
@@ -453,10 +702,10 @@ struct cifs_ses {
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 */
+ __u64 Suid; /* remote smb uid */
uid_t linux_uid; /* overriding owner of files on the mount */
uid_t cred_uid; /* owner of credentials */
- int capabilities;
+ 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
@@ -466,7 +715,11 @@ struct cifs_ses {
struct session_key auth_key;
struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
bool need_reconnect:1; /* connection reset, uid now invalid */
+#ifdef CONFIG_CIFS_SMB2
+ __u16 session_flags;
+#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
@@ -475,6 +728,13 @@ struct cifs_ses {
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
@@ -487,32 +747,42 @@ 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;
@@ -543,10 +813,20 @@ 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 */
+ __u32 capabilities;
+ __u32 share_flags;
+ __u32 maximal_access;
+ __u32 vol_serial_number;
+ __le64 vol_create_time;
+#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)? */
};
@@ -589,6 +869,15 @@ 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
@@ -622,16 +911,29 @@ struct cifs_search_info {
bool smallBuf:1; /* so we know which buf_release function to call */
};
+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;
+};
+
+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 */
- struct list_head llist; /*
- * brlocks held by this fid, protected by
- * lock_mutex from cifsInodeInfo structure
- */
+ struct cifs_fid_locks *llist; /* brlocks held by this fid */
unsigned int 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;
@@ -647,23 +949,71 @@ 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[1];
+};
+
/*
* 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)
+static inline void
+cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
{
++cifs_file->count;
- return cifs_file;
}
+struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
/*
@@ -672,11 +1022,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
struct cifsInodeInfo {
bool can_cache_brlcks;
- struct mutex lock_mutex; /*
- * protect the field above and llist
- * from every cifsFileInfo structure
- * from openFileList
- */
+ 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 */
@@ -688,6 +1035,9 @@ struct cifsInodeInfo {
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
@@ -717,21 +1067,16 @@ 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
@@ -791,6 +1136,7 @@ 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 */
+ struct TCP_Server_Info *server; /* server corresponding to this mid */
__u64 mid; /* multiplex id */
__u32 pid; /* process id */
__u32 sequence_number; /* for CIFS signing */
@@ -954,6 +1300,12 @@ 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
@@ -996,7 +1348,7 @@ 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_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)
/*
@@ -1127,11 +1479,19 @@ 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; */ /* not needed yet */
+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;
#endif /* _CIFS_GLOB_H */