/*
* fs/cifs/cifsglob.h
*
- * Copyright (C) International Business Machines Corp., 2002,2005
+ * 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
* 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.
- *
+ *
*/
#include <linux/in.h>
#include <linux/in6.h>
+#include <linux/slow-work.h>
#include "cifs_fs_sb.h"
+#include "cifsacl.h"
/*
* The sizes of various internal tables and strings
*/
#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_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
#define MAX_SERVER_SIZE 15
-#define MAX_SHARE_SIZE 64 /* used to be 20 - this should still be enough */
+#define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */
#define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null
termination then *2 for unicode versions */
#define MAX_PASSWORD_SIZE 16
/*
* MAX_REQ is the maximum number of requests that WE will send
- * on one socket concurently. It also matches the most common
- * value of max multiplex returned by servers. We may
+ * 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.
*/
-#define CIFS_MAX_REQ 50
+#define CIFS_MAX_REQ 50
+
+#define RFC1001_NAME_LEN 15
+#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
-#define SERVER_NAME_LENGTH 15
+/* 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 */
#include "cifspdu.h"
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-
#ifndef XATTR_DOS_ATTRIB
#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
#endif
/*
- * This information is kept on every Server we know about.
- *
- * Some things to note:
- *
- */
-#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
-
-/*
* CIFS vfs client Status information (based on what we know.)
*/
};
enum securityEnum {
- NTLM = 0, /* Legacy NTLM012 auth with NTLM hash */
+ PLAINTXT = 0, /* Legacy with Plaintext passwords */
+ LANMAN, /* Legacy LANMAN auth */
+ NTLM, /* Legacy NTLM012 auth with NTLM hash */
NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
- RawNTLMSSP, /* NTLMSSP without SPNEGO */
- NTLMSSP, /* NTLMSSP via SPNEGO */
- Kerberos /* Kerberos via SPNEGO */
+ RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */
+/* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */
+ Kerberos, /* Kerberos via SPNEGO */
+ MSKerberos, /* MS Kerberos via SPNEGO */
};
enum protocolEnum {
- IPV4 = 0,
- IPV6,
+ TCP = 0,
SCTP
/* Netbios frames protocol not supported at this time */
};
+struct mac_key {
+ unsigned int len;
+ union {
+ char ntlm[CIFS_SESS_KEY_SIZE + 16];
+ char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */
+ struct {
+ char key[16];
+ struct ntlmv2_resp resp;
+ } ntlmv2;
+ } data;
+};
+
+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
*/
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[SERVER_NAME_LEN_WITH_NULL];
- char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
+ char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
+ char *hostname; /* hostname portion of UNC string */
struct socket *ssocket;
union {
struct sockaddr_in sockAddr;
struct sockaddr_in6 sockAddr6;
} addr;
- wait_queue_head_t response_q;
+ 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;
void *Server_NlsInfo; /* BB - placeholder for future NLS info */
unsigned short server_codepage; /* codepage for the server */
- unsigned long ip_address; /* IP addr for the server if known */
- enum protocolEnum protocolType;
+ unsigned long ip_address; /* IP addr for the server if known */
+ enum protocolEnum protocolType;
char versionMajor;
char versionMinor;
- unsigned svlocal:1; /* local server or remote */
- atomic_t socketUseCount; /* number of open cifs sessions on socket */
+ bool svlocal:1; /* local server or remote */
+ bool noblocksnd; /* use blocking sendmsg */
+ bool noautotune; /* do not autotune send buf sizes */
atomic_t inFlight; /* number of requests on the wire to server */
+#ifdef CONFIG_CIFS_STATS2
+ atomic_t inSend; /* requests trying to send */
+ atomic_t num_waiters; /* blocked waiting to get in sendrecv */
+#endif
enum statusEnum tcpStatus; /* what we think the status is */
- struct semaphore tcpSem;
+ struct mutex srv_mutex;
struct task_struct *tsk;
char server_GUID[16];
char secMode;
/* multiplexed reads or writes */
unsigned int maxBuf; /* maxBuf specifies the maximum */
/* message size the server can send or receive for non-raw SMBs */
- unsigned int maxRw; /* maxRw specifies the maximum */
+ 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 */
char sessid[4]; /* unique token id for this session */
/* (returned on Negotiate */
int capabilities; /* allow selective disabling of caps by smb sess */
- __u16 timeZone;
+ int timeAdj; /* Adjust for difference in server time zone in sec */
__u16 CurrentMid; /* multiplex id - rotating counter */
char cryptKey[CIFS_CRYPTO_KEY_SIZE];
/* 16th byte of RFC1001 workstation name is always null */
- char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
+ char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
__u32 sequence_number; /* needed for CIFS PDU signature */
- char mac_signing_key[CIFS_SESSION_KEY_SIZE + 16];
+ struct mac_key mac_signing_key;
+ char ntlmv2_hash[16];
+ unsigned long lstrp; /* when we got last response from this server */
};
/*
* The following is our shortcut to user information. We surface the uid,
* and name. We always get the password on the fly in case it
- * has changed. We also hang a list of sessions owned by this user off here.
+ * has changed. We also hang a list of sessions owned by this user off here.
*/
struct cifsUidInfo {
struct list_head userList;
* Session structure. One of these for each uid session with a particular host
*/
struct cifsSesInfo {
- struct list_head cifsSessionList;
+ struct list_head smb_ses_list;
+ struct list_head tcon_list;
struct semaphore sesSem;
+#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
+#endif
struct TCP_Server_Info *server; /* pointer to server info */
- atomic_t inUse; /* # of mounts (tree connections) on this ses */
+ 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; /* local Linux uid */
int capabilities;
- char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
+ char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
char userName[MAX_USERNAME_SIZE + 1];
- char domainName[MAX_USERNAME_SIZE + 1];
- char * password;
+ char *domainName;
+ char *password;
+ bool need_reconnect:1; /* connection reset, uid now invalid */
};
-/* session flags */
+/* 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
+ * session
*/
struct cifsTconInfo {
- struct list_head cifsConnectionList;
+ struct list_head tcon_list;
+ int tc_count;
struct list_head openFileList;
- struct semaphore tconSem;
struct cifsSesInfo *ses; /* pointer to session associated with */
- char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource (in ASCII not UTF) */
+ 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;
- atomic_t useCount; /* how many mounts (explicit or implicit) to this share */
#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_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;
spinlock_t stat_lock;
#endif /* CONFIG_CIFS_STATS */
FILE_SYSTEM_DEVICE_INFO fsDevInfo;
- FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if file system name truncated */
+ FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
FILE_SYSTEM_UNIX_INFO fsUnixInfo;
- unsigned retry:1;
- unsigned nocase:1;
- /* BB add field for back pointer to sb struct? */
+ 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 */
+ /* BB add field for back pointer to sb struct(s)? */
};
/*
- * This info hangs off the cifsFileInfo structure. This is used to track
- * byte stream locks on the file
+ * 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 cifsLockInfo *next;
- int start;
- int length;
- int type;
+ struct list_head llist; /* pointer to next cifsLockInfo */
+ __u64 offset;
+ __u64 length;
+ __u8 type;
};
/*
__u16 entries_in_buffer;
__u16 info_level;
__u32 resume_key;
- char * ntwrk_buf_start;
- char * srch_entries_start;
- char * presume_name;
+ char *ntwrk_buf_start;
+ char *srch_entries_start;
+ char *last_entry;
+ char *presume_name;
unsigned int resume_name_len;
- unsigned endOfSearch:1;
- unsigned emptyDir:1;
- unsigned unicode:1;
+ bool endOfSearch:1;
+ bool emptyDir:1;
+ bool unicode:1;
+ bool smallBuf:1; /* so we know which buf_release function to call */
};
struct cifsFileInfo {
__u16 netfid; /* file id from remote */
/* BB add lock scope info here if needed */ ;
/* lock scope id (0 if none) */
- struct file * pfile; /* needed for writepage */
- struct inode * pInode; /* needed for oplock break */
- unsigned closePend:1; /* file is marked to close */
- unsigned invalidHandle:1; /* file closed via session abend */
- struct semaphore fh_sem; /* prevents reopen race after dead ses*/
- char * search_resume_name; /* BB removeme BB */
- unsigned int resume_name_length; /* BB removeme - field renamed and moved BB */
+ struct file *pfile; /* needed for writepage */
+ struct inode *pInode; /* needed for oplock break */
+ struct vfsmount *mnt;
+ struct mutex lock_mutex;
+ struct list_head llist; /* list of byte range locks we have. */
+ bool closePend:1; /* file is marked to close */
+ bool invalidHandle:1; /* file closed via session abend */
+ bool oplock_break_cancelled:1;
+ atomic_t count; /* reference count */
+ struct mutex fh_mutex; /* prevents reopen race after dead ses*/
struct cifs_search_info srch_inf;
+ struct slow_work oplock_break; /* slow_work job for oplock breaks */
};
+/* Take a reference on the file private data */
+static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file)
+{
+ atomic_inc(&cifs_file->count);
+}
+
+/* Release a reference on the file private data */
+static inline void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
+{
+ if (atomic_dec_and_test(&cifs_file->count)) {
+ iput(cifs_file->pInode);
+ kfree(cifs_file);
+ }
+}
+
/*
* One of these for each file inode
*/
struct cifsInodeInfo {
struct list_head lockList;
- /* BB add in lists for dirty pages - i.e. write caching info for oplock */
+ /* BB add in lists for dirty pages i.e. write caching info for oplock */
struct list_head openFileList;
int write_behind_rc;
__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
- atomic_t inUse; /* num concurrent users (local openers cifs) of file*/
unsigned long time; /* jiffies of last update/check of inode */
- unsigned clientCanCacheRead:1; /* read oplock */
- unsigned clientCanCacheAll:1; /* read and writebehind oplock */
- unsigned oplockPending:1;
+ bool clientCanCacheRead:1; /* read oplock */
+ bool clientCanCacheAll:1; /* read and writebehind oplock */
+ bool delete_pending:1; /* DELETE_ON_CLOSE is set */
+ u64 server_eof; /* current file size on server */
+ u64 uniqueid; /* server inode number */
struct inode vfs_inode;
};
return sb->s_fs_info;
}
-static inline const char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
+static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
{
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
return '/';
}
#else
-#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)
+#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
__u16 mid; /* multiplex id */
__u16 pid; /* process id */
__u32 sequence_number; /* for CIFS signing */
- struct timeval when_sent; /* time when smb sent */
- struct cifsSesInfo *ses; /* smb was sent to this server */
+ 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
struct task_struct *tsk; /* task waiting for response */
struct smb_hdr *resp_buf; /* response buffer */
int midState; /* wish this were enum but can not pass to wait_event */
__u8 command; /* smb command code */
- unsigned multiPart:1; /* multiple responses to one SMB request */
- unsigned largeBuf:1; /* if valid response, is pointer to large buf */
- unsigned multiResp:1; /* multiple trans2 responses for one request */
+ bool largeBuf:1; /* if valid response, is pointer to large buf */
+ bool multiRsp:1; /* multiple trans2 responses for one request */
+ bool multiEnd:1; /* both received */
};
struct oplock_q_entry {
struct list_head qhead;
- struct inode * pinode;
- struct cifsTconInfo * tcon;
+ struct inode *pinode;
+ struct cifsTconInfo *tcon;
__u16 netfid;
};
+/* 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
+
+struct cifs_fattr {
+ u32 cf_flags;
+ u32 cf_cifsattrs;
+ u64 cf_uniqueid;
+ u64 cf_eof;
+ u64 cf_bytes;
+ 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_NO_RESP_NEEDED 0x10
-#define MID_SMALL_BUFFER 0x20 /* 112 byte response buffer instead of 4K */
+/* 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_STD_OP 0 /* normal request timeout */
+#define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */
+#define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */
+#define CIFS_BLOCKING_OP 4 /* operation can block */
+#define CIFS_ASYNC_OP 8 /* do not wait for response */
+#define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 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 */
+#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
* ----------
* sesSem operations on smb session
* tconSem operations on tree connection
- * fh_sem file handle reconnection operations
+ * fh_sem file handle reconnection operations
*
****************************************************************************/
#endif
/*
- * The list of servers that did not respond with NT LM 0.12.
- * This list helps improve performance and eliminate the messages indicating
- * that we had a communications error talking to the server in this list.
+ * 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 servers_not_supported *NotSuppList; /*@z4a */
+GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
/*
- * The following is a hash table of all the users we know about.
+ * 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 struct smbUidInfo *GlobalUidList[UID_HASH];
+GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
-GLOBAL_EXTERN struct list_head GlobalServerList; /* BB not implemented yet */
-GLOBAL_EXTERN struct list_head GlobalSMBSessionList;
-GLOBAL_EXTERN struct list_head GlobalTreeConnectionList;
-GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */
+/*
+ * 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 rwlock_t GlobalSMBSeslock;
-GLOBAL_EXTERN struct list_head GlobalOplock_Q;
+/* Outstanding dir notify requests */
+GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
+/* DirNotify response queue */
+GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
/*
* 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 GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
-GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above and list operations */
- /* on midQ entries */
+GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
+ /* on midQ entries */
GLOBAL_EXTERN char Local_System_Name[15];
/*
GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
-/* Various Debug counters to remove someday (BB) */
-GLOBAL_EXTERN atomic_t bufAllocCount;
-GLOBAL_EXTERN atomic_t smBufAllocCount;
+/* 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
+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
+ have the uid/password or Kerberos credential
or equivalent for current user */
GLOBAL_EXTERN unsigned int oplockEnabled;
GLOBAL_EXTERN unsigned int experimEnabled;
GLOBAL_EXTERN unsigned int lookupCacheEnabled;
-GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent
+GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent
with more secure ntlmssp2 challenge/resp */
-GLOBAL_EXTERN unsigned int ntlmv2_support; /* better optional password hash */
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_small; /* min size of small buf pool */
GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
+extern const struct slow_work_ops cifs_oplock_break_ops;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff