Merge branch '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6

* '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6: (52 commits)
  Fix build break when freezer not configured
  Add definition for share encryption
  CIFS: Make cifs_push_locks send as many locks at once as possible
  CIFS: Send as many mandatory unlock ranges at once as possible
  CIFS: Implement caching mechanism for posix brlocks
  CIFS: Implement caching mechanism for mandatory brlocks
  CIFS: Fix DFS handling in cifs_get_file_info
  CIFS: Fix error handling in cifs_readv_complete
  [CIFS] Fixup trivial checkpatch warning
  [CIFS] Show nostrictsync and noperm mount options in /proc/mounts
  cifs, freezer: add wait_event_freezekillable and have cifs use it
  cifs: allow cifs_max_pending to be readable under /sys/module/cifs/parameters
  cifs: tune bdi.ra_pages in accordance with the rsize
  cifs: allow for larger rsize= options and change defaults
  cifs: convert cifs_readpages to use async reads
  cifs: add cifs_async_readv
  cifs: fix protocol definition for READ_RSP
  cifs: add a callback function to receive the rest of the frame
  cifs: break out 3rd receive phase into separate function
  cifs: find mid earlier in receive codepath
  ...

fs/cifs/README

@@ -745,4 +745,18 @@ installed and something like the following lines should be added to the
 create cifs.spnego * * /usr/local/sbin/cifs.upcall %k
 create dns_resolver * * /usr/local/sbin/cifs.upcall %k
 
+CIFS kernel module parameters
+=============================
+These module parameters can be specified or modified either during the time of
+module loading or during the runtime by using the interface
+	/proc/module/cifs/parameters/<param>
+
+i.e. echo "value" > /sys/module/cifs/parameters/<param>
+
+1. echo_retries - The number of echo attempts before giving up and
+		  reconnecting to the server. The default is 5. The value 0
+		  means never reconnect.
+
+2. enable_oplocks - Enable or disable oplocks. Oplocks are enabled by default.
+		    [Y/y/1]. To disable use any of [N/n/0].
 

fs/cifs/cifs_debug.c

@@ -511,7 +511,7 @@ static const struct file_operations cifsFYI_proc_fops = {
 
 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 {
-	seq_printf(m, "%d\n", oplockEnabled);
+	seq_printf(m, "%d\n", enable_oplocks);
 	return 0;
 }
 
@@ -526,13 +526,16 @@ static ssize_t cifs_oplock_proc_write(struct file *file,
 	char c;
 	int rc;
 
+	printk(KERN_WARNING "CIFS: The /proc/fs/cifs/OplockEnabled interface "
+	       "will be removed in kernel version 3.4. Please migrate to "
+	       "using the 'enable_oplocks' module parameter in cifs.ko.\n");
 	rc = get_user(c, buffer);
 	if (rc)
 		return rc;
 	if (c == '0' || c == 'n' || c == 'N')
-		oplockEnabled = 0;
+		enable_oplocks = false;
 	else if (c == '1' || c == 'y' || c == 'Y')
-		oplockEnabled = 1;
+		enable_oplocks = true;
 
 	return count;
 }

fs/cifs/cifs_fs_sb.h

@@ -43,6 +43,8 @@
 #define CIFS_MOUNT_STRICT_IO	0x40000 /* strict cache mode */
 #define CIFS_MOUNT_RWPIDFORWARD	0x80000 /* use pid forwarding for rw */
 #define CIFS_MOUNT_POSIXACL	0x100000 /* mirror of MS_POSIXACL in mnt_cifs_flags */
+#define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
+#define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
 
 struct cifs_sb_info {
 	struct rb_root tlink_tree;
@@ -55,6 +57,8 @@ struct cifs_sb_info {
 	atomic_t active;
 	uid_t	mnt_uid;
 	gid_t	mnt_gid;
+	uid_t	mnt_backupuid;
+	gid_t	mnt_backupgid;
 	mode_t	mnt_file_mode;
 	mode_t	mnt_dir_mode;
 	unsigned int mnt_cifs_flags;

fs/cifs/cifsencrypt.c

@@ -37,83 +37,8 @@
  * the sequence number before this function is called. Also, this function
  * should be called with the server->srv_mutex held.
  */
-static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
-				struct TCP_Server_Info *server, char *signature)
-{
-	int rc;
-
-	if (cifs_pdu == NULL || signature == NULL || server == NULL)
-		return -EINVAL;
-
-	if (!server->secmech.sdescmd5) {
-		cERROR(1, "%s: Can't generate signature\n", __func__);
-		return -1;
-	}
-
-	rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
-	if (rc) {
-		cERROR(1, "%s: Could not init md5\n", __func__);
-		return rc;
-	}
-
-	rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
-		server->session_key.response, server->session_key.len);
-	if (rc) {
-		cERROR(1, "%s: Could not update with response\n", __func__);
-		return rc;
-	}
-
-	rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
-		cifs_pdu->Protocol, be32_to_cpu(cifs_pdu->smb_buf_length));
-	if (rc) {
-		cERROR(1, "%s: Could not update with payload\n", __func__);
-		return rc;
-	}
-
-	rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
-	if (rc)
-		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
-
-	return rc;
-}
-
-/* must be called with server->srv_mutex held */
-int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
-		  __u32 *pexpected_response_sequence_number)
-{
-	int rc = 0;
-	char smb_signature[20];
-
-	if ((cifs_pdu == NULL) || (server == NULL))
-		return -EINVAL;
-
-	if (!(cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) ||
-	    server->tcpStatus == CifsNeedNegotiate)
-		return rc;
-
-	if (!server->session_estab) {
-		strncpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8);
-		return rc;
-	}
-
-	cifs_pdu->Signature.Sequence.SequenceNumber =
-			cpu_to_le32(server->sequence_number);
-	cifs_pdu->Signature.Sequence.Reserved = 0;
-
-	*pexpected_response_sequence_number = server->sequence_number++;
-	server->sequence_number++;
-
-	rc = cifs_calculate_signature(cifs_pdu, server, smb_signature);
-	if (rc)
-		memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
-	else
-		memcpy(cifs_pdu->Signature.SecuritySignature, smb_signature, 8);
-
-	return rc;
-}
-
-static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
-				struct TCP_Server_Info *server, char *signature)
+static int cifs_calc_signature(const struct kvec *iov, int n_vec,
+			struct TCP_Server_Info *server, char *signature)
 {
 	int i;
 	int rc;
@@ -179,7 +104,7 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
 {
 	int rc = 0;
 	char smb_signature[20];
-	struct smb_hdr *cifs_pdu = iov[0].iov_base;
+	struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base;
 
 	if ((cifs_pdu == NULL) || (server == NULL))
 		return -EINVAL;
@@ -189,7 +114,7 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
 		return rc;
 
 	if (!server->session_estab) {
-		strncpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8);
+		memcpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8);
 		return rc;
 	}
 
@@ -200,7 +125,7 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
 	*pexpected_response_sequence_number = server->sequence_number++;
 	server->sequence_number++;
 
-	rc = cifs_calc_signature2(iov, n_vec, server, smb_signature);
+	rc = cifs_calc_signature(iov, n_vec, server, smb_signature);
 	if (rc)
 		memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
 	else
@@ -209,13 +134,27 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
 	return rc;
 }
 
-int cifs_verify_signature(struct smb_hdr *cifs_pdu,
+/* must be called with server->srv_mutex held */
+int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
+		  __u32 *pexpected_response_sequence_number)
+{
+	struct kvec iov;
+
+	iov.iov_base = cifs_pdu;
+	iov.iov_len = be32_to_cpu(cifs_pdu->smb_buf_length) + 4;
+
+	return cifs_sign_smb2(&iov, 1, server,
+			      pexpected_response_sequence_number);
+}
+
+int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
 			  struct TCP_Server_Info *server,
 			  __u32 expected_sequence_number)
 {
 	unsigned int rc;
 	char server_response_sig[8];
 	char what_we_think_sig_should_be[20];
+	struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base;
 
 	if (cifs_pdu == NULL || server == NULL)
 		return -EINVAL;
@@ -247,8 +186,8 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
 	cifs_pdu->Signature.Sequence.Reserved = 0;
 
 	mutex_lock(&server->srv_mutex);
-	rc = cifs_calculate_signature(cifs_pdu, server,
-		what_we_think_sig_should_be);
+	rc = cifs_calc_signature(iov, nr_iov, server,
+				 what_we_think_sig_should_be);
 	mutex_unlock(&server->srv_mutex);
 
 	if (rc)

fs/cifs/cifsfs.c

@@ -53,7 +53,7 @@
 int cifsFYI = 0;
 int cifsERROR = 1;
 int traceSMB = 0;
-unsigned int oplockEnabled = 1;
+bool enable_oplocks = true;
 unsigned int linuxExtEnabled = 1;
 unsigned int lookupCacheEnabled = 1;
 unsigned int multiuser_mount = 0;
@@ -74,7 +74,7 @@ module_param(cifs_min_small, int, 0);
 MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 "
 				 "Range: 2 to 256");
 unsigned int cifs_max_pending = CIFS_MAX_REQ;
-module_param(cifs_max_pending, int, 0);
+module_param(cifs_max_pending, int, 0444);
 MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. "
 				   "Default: 50 Range: 2 to 256");
 unsigned short echo_retries = 5;
@@ -82,6 +82,10 @@ module_param(echo_retries, ushort, 0644);
 MODULE_PARM_DESC(echo_retries, "Number of echo attempts before giving up and "
 			       "reconnecting server. Default: 5. 0 means "
 			       "never reconnect.");
+module_param(enable_oplocks, bool, 0644);
+MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks (bool). Default:"
+				 "y/Y/1");
+
 extern mempool_t *cifs_sm_req_poolp;
 extern mempool_t *cifs_req_poolp;
 extern mempool_t *cifs_mid_poolp;
@@ -132,12 +136,12 @@ cifs_read_super(struct super_block *sb)
 	else
 		sb->s_d_op = &cifs_dentry_ops;
 
-#ifdef CIFS_NFSD_EXPORT
+#ifdef CONFIG_CIFS_NFSD_EXPORT
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
 		cFYI(1, "export ops supported");
 		sb->s_export_op = &cifs_export_ops;
 	}
-#endif /* CIFS_NFSD_EXPORT */
+#endif /* CONFIG_CIFS_NFSD_EXPORT */
 
 	return 0;
 
@@ -432,6 +436,12 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m)
 		seq_printf(s, ",mfsymlinks");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
 		seq_printf(s, ",fsc");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
+		seq_printf(s, ",nostrictsync");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
+		seq_printf(s, ",noperm");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
+		seq_printf(s, ",strictcache");
 
 	seq_printf(s, ",rsize=%d", cifs_sb->rsize);
 	seq_printf(s, ",wsize=%d", cifs_sb->wsize);
@@ -530,7 +540,6 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 	char *full_path = NULL;
 	char *s, *p;
 	char sep;
-	int xid;
 
 	full_path = cifs_build_path_to_root(vol, cifs_sb,
 					    cifs_sb_master_tcon(cifs_sb));
@@ -539,7 +548,6 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 
 	cFYI(1, "Get root dentry for %s", full_path);
 
-	xid = GetXid();
 	sep = CIFS_DIR_SEP(cifs_sb);
 	dentry = dget(sb->s_root);
 	p = s = full_path;
@@ -570,7 +578,6 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 		dput(dentry);
 		dentry = child;
 	} while (!IS_ERR(dentry));
-	_FreeXid(xid);
 	kfree(full_path);
 	return dentry;
 }
@@ -942,7 +949,8 @@ cifs_init_once(void *inode)
 	struct cifsInodeInfo *cifsi = inode;
 
 	inode_init_once(&cifsi->vfs_inode);
-	INIT_LIST_HEAD(&cifsi->lockList);
+	INIT_LIST_HEAD(&cifsi->llist);
+	mutex_init(&cifsi->lock_mutex);
 }
 
 static int

fs/cifs/cifsfs.h

@@ -121,9 +121,9 @@ extern ssize_t	cifs_getxattr(struct dentry *, const char *, void *, size_t);
 extern ssize_t	cifs_listxattr(struct dentry *, char *, size_t);
 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 
-#ifdef CIFS_NFSD_EXPORT
+#ifdef CONFIG_CIFS_NFSD_EXPORT
 extern const struct export_operations cifs_export_ops;
-#endif /* CIFS_NFSD_EXPORT */
+#endif /* CONFIG_CIFS_NFSD_EXPORT */
 
 #define CIFS_VERSION   "1.75"
 #endif				/* _CIFSFS_H */

fs/cifs/cifsglob.h

@@ -167,6 +167,8 @@ struct smb_vol {
 	uid_t cred_uid;
 	uid_t linux_uid;
 	gid_t linux_gid;
+	uid_t backupuid;
+	gid_t backupgid;
 	mode_t file_mode;
 	mode_t dir_mode;
 	unsigned secFlg;
@@ -179,6 +181,8 @@ struct smb_vol {
 	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;
@@ -219,7 +223,8 @@ struct smb_vol {
 			 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_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)
@@ -286,7 +291,13 @@ struct TCP_Server_Info {
 	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
@@ -485,9 +496,13 @@ extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
  */
 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;
 };
 
 /*
@@ -520,8 +535,6 @@ struct cifsFileInfo {
 	struct dentry *dentry;
 	unsigned int f_flags;
 	struct tcon_link *tlink;
-	struct mutex lock_mutex;
-	struct list_head llist; /* list of byte range locks we have. */
 	bool invalidHandle:1;	/* file closed via session abend */
 	bool oplock_break_cancelled:1;
 	int count;		/* refcount protected by cifs_file_list_lock */
@@ -554,7 +567,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
  */
 
 struct cifsInodeInfo {
-	struct list_head lockList;
+	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 */
@@ -643,8 +658,24 @@ static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
 struct mid_q_entry;
 
 /*
- * This is the prototype for the mid callback function. When creating one,
- * take special care to avoid deadlocks. Things to bear in mind:
+ * 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
@@ -662,9 +693,10 @@ struct mid_q_entry {
 	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 */
-	struct smb_hdr *resp_buf;	/* response buffer */
+	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 */
@@ -964,7 +996,8 @@ 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 */
-GLOBAL_EXTERN unsigned int oplockEnabled;
+/* 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 */
@@ -978,10 +1011,16 @@ 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;
 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);
 

fs/cifs/cifspdu.h

@@ -1089,9 +1089,7 @@ typedef struct smb_com_read_rsp {
 	__le16 DataLengthHigh;
 	__u64 Reserved2;
 	__u16 ByteCount;
-	__u8 Pad;		/* BB check for whether padded to DWORD
-				   boundary and optimum performance here */
-	char Data[1];
+	/* read response data immediately follows */
 } __attribute__((packed)) READ_RSP;
 
 typedef struct locking_andx_range {
@@ -1913,6 +1911,10 @@ typedef struct whoami_rsp_data { /* Query level 0x202 */
 
 /* SETFSInfo Levels */
 #define SMB_SET_CIFS_UNIX_INFO    0x200
+/* level 0x203 is defined above in list of QFS info levels */
+/* #define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203 */
+
+/* Level 0x200 request structure follows */
 typedef struct smb_com_transaction2_setfsi_req {
 	struct smb_hdr hdr;	/* wct = 15 */
 	__le16 TotalParameterCount;
@@ -1940,13 +1942,39 @@ typedef struct smb_com_transaction2_setfsi_req {
 	__le64 ClientUnixCap;   /* Data end */
 } __attribute__((packed)) TRANSACTION2_SETFSI_REQ;
 
+/* level 0x203 request structure follows */
+typedef struct smb_com_transaction2_setfs_enc_req {
+	struct smb_hdr hdr;	/* wct = 15 */
+	__le16 TotalParameterCount;
+	__le16 TotalDataCount;
+	__le16 MaxParameterCount;
+	__le16 MaxDataCount;
+	__u8 MaxSetupCount;
+	__u8 Reserved;
+	__le16 Flags;
+	__le32 Timeout;
+	__u16 Reserved2;
+	__le16 ParameterCount;	/* 4 */
+	__le16 ParameterOffset;
+	__le16 DataCount;	/* 12 */
+	__le16 DataOffset;
+	__u8 SetupCount;	/* one */
+	__u8 Reserved3;
+	__le16 SubCommand;	/* TRANS2_SET_FS_INFORMATION */
+	__le16 ByteCount;
+	__u8 Pad;
+	__u16  Reserved4;	/* Parameters start. */
+	__le16 InformationLevel;/* Parameters end. */
+	/* NTLMSSP Blob, Data start. */
+} __attribute__((packed)) TRANSACTION2_SETFSI_ENC_REQ;
+
+/* response for setfsinfo levels 0x200 and 0x203 */
 typedef struct smb_com_transaction2_setfsi_rsp {
 	struct smb_hdr hdr;	/* wct = 10 */
 	struct trans2_resp t2;
 	__u16 ByteCount;
 } __attribute__((packed)) TRANSACTION2_SETFSI_RSP;
 
-
 typedef struct smb_com_transaction2_get_dfs_refer_req {
 	struct smb_hdr hdr;	/* wct = 15 */
 	__le16 TotalParameterCount;
@@ -2098,13 +2126,13 @@ typedef struct {
 #define CIFS_UNIX_PROXY_CAP             0x00000400 /* Proxy cap: 0xACE ioctl and
 						      QFS PROXY call */
 #ifdef CONFIG_CIFS_POSIX
-/* Can not set pathnames cap yet until we send new posix create SMB since
-   otherwise server can treat such handles opened with older ntcreatex
-   (by a new client which knows how to send posix path ops)
-   as non-posix handles (can affect write behavior with byte range locks.
-   We can add back in POSIX_PATH_OPS cap when Posix Create/Mkdir finished */
+/* presumably don't need the 0x20 POSIX_PATH_OPS_CAP since we never send
+   LockingX instead of posix locking call on unix sess (and we do not expect
+   LockingX to use different (ie Windows) semantics than posix locking on
+   the same session (if WINE needs to do this later, we can add this cap
+   back in later */
 /* #define CIFS_UNIX_CAP_MASK              0x000000fb */
-#define CIFS_UNIX_CAP_MASK              0x000000db
+#define CIFS_UNIX_CAP_MASK              0x000003db
 #else
 #define CIFS_UNIX_CAP_MASK              0x00000013
 #endif /* CONFIG_CIFS_POSIX */

fs/cifs/cifsproto.h

@@ -69,8 +69,9 @@ extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
 					struct TCP_Server_Info *server);
 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
 extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
-			   unsigned int nvec, mid_callback_t *callback,
-			   void *cbdata, bool ignore_pend);
+			   unsigned int nvec, mid_receive_t *receive,
+			   mid_callback_t *callback, void *cbdata,
+			   bool ignore_pend);
 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 			struct smb_hdr * /* input */ ,
 			struct smb_hdr * /* out */ ,
@@ -90,6 +91,7 @@ extern int SendReceiveBlockingLock(const unsigned int xid,
 extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
 extern bool is_valid_oplock_break(struct smb_hdr *smb,
 				  struct TCP_Server_Info *);
+extern bool backup_cred(struct cifs_sb_info *);
 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 			    unsigned int bytes_written);
@@ -145,12 +147,19 @@ extern int cifs_get_inode_info_unix(struct inode **pinode,
 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 			      struct cifs_fattr *fattr, struct inode *inode,
 			      const char *path, const __u16 *pfid);
-extern int mode_to_cifs_acl(struct inode *inode, const char *path, __u64);
+extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
+					uid_t, gid_t);
 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 					const char *, u32 *);
 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
-				const char *);
+				const char *, int);
 
+extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
+extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
+		     unsigned int to_read);
+extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
+		struct kvec *iov_orig, unsigned int nr_segs,
+		unsigned int to_read);
 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 			       struct cifs_sb_info *cifs_sb);
 extern int cifs_match_super(struct super_block *, void *);
@@ -359,14 +368,17 @@ extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 
+extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
+		      const __u8 lock_type, const __u32 num_unlock,
+		      const __u32 num_lock, LOCKING_ANDX_RANGE *buf);
 extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
-			const __u16 netfid, const __u64 len,
+			const __u16 netfid, const __u32 netpid, const __u64 len,
 			const __u64 offset, const __u32 numUnlock,
 			const __u32 numLock, const __u8 lockType,
 			const bool waitFlag, const __u8 oplock_level);
 extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
-			const __u16 smb_file_id, const int get_flag,
-			const __u64 len, struct file_lock *,
+			const __u16 smb_file_id, const __u32 netpid,
+			const int get_flag, const __u64 len, struct file_lock *,
 			const __u16 lock_type, const bool waitFlag);
 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
@@ -380,7 +392,7 @@ extern void tconInfoFree(struct cifs_tcon *);
 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 			  __u32 *);
-extern int cifs_verify_signature(struct smb_hdr *,
+extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
 				 struct TCP_Server_Info *server,
 				__u32 expected_sequence_number);
 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
@@ -419,7 +431,7 @@ extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
 extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
 			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
-			struct cifs_ntsd *, __u32);
+			struct cifs_ntsd *, __u32, int);
 extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 		const unsigned char *searchName,
 		char *acl_inf, const int buflen, const int acl_type,
@@ -440,6 +452,24 @@ extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 			unsigned char *p24);
 
+/* asynchronous read support */
+struct cifs_readdata {
+	struct cifsFileInfo		*cfile;
+	struct address_space		*mapping;
+	__u64				offset;
+	unsigned int			bytes;
+	pid_t				pid;
+	int				result;
+	struct list_head		pages;
+	struct work_struct		work;
+	unsigned int			nr_iov;
+	struct kvec			iov[1];
+};
+
+struct cifs_readdata *cifs_readdata_alloc(unsigned int nr_pages);
+void cifs_readdata_free(struct cifs_readdata *rdata);
+int cifs_async_readv(struct cifs_readdata *rdata);
+
 /* asynchronous write support */
 struct cifs_writedata {
 	struct kref			refcount;

fs/cifs/dir.c

@@ -171,7 +171,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	}
 	tcon = tlink_tcon(tlink);
 
-	if (oplockEnabled)
+	if (enable_oplocks)
 		oplock = REQ_OPLOCK;
 
 	if (nd)
@@ -244,6 +244,9 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	if (!tcon->unix_ext && (mode & S_IWUGO) == 0)
 		create_options |= CREATE_OPTION_READONLY;
 
+	if (backup_cred(cifs_sb))
+		create_options |= CREATE_OPEN_BACKUP_INTENT;
+
 	if (tcon->ses->capabilities & CAP_NT_SMBS)
 		rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
 			 desiredAccess, create_options,
@@ -357,6 +360,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
 {
 	int rc = -EPERM;
 	int xid;
+	int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
 	struct cifs_tcon *pTcon;
@@ -431,9 +435,11 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
 		return rc;
 	}
 
-	/* FIXME: would WRITE_OWNER | WRITE_DAC be better? */
+	if (backup_cred(cifs_sb))
+		create_options |= CREATE_OPEN_BACKUP_INTENT;
+
 	rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE,
-			 GENERIC_WRITE, CREATE_NOT_DIR | CREATE_OPTION_SPECIAL,
+			 GENERIC_WRITE, create_options,
 			 &fileHandle, &oplock, buf, cifs_sb->local_nls,
 			 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
 	if (rc)
@@ -642,8 +648,16 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
 	if (direntry->d_inode) {
 		if (cifs_revalidate_dentry(direntry))
 			return 0;
-		else
+		else {
+			/*
+			 * Forcibly invalidate automounting directory inodes
+			 * (remote DFS directories) so to have them
+			 * instantiated again for automount
+			 */
+			if (IS_AUTOMOUNT(direntry->d_inode))
+				return 0;
 			return 1;
+		}
 	}
 
 	/*

fs/cifs/export.c

@@ -45,7 +45,7 @@
 #include "cifs_debug.h"
 #include "cifsfs.h"
 
-#ifdef CIFS_NFSD_EXPORT
+#ifdef CONFIG_CIFS_NFSD_EXPORT
 static struct dentry *cifs_get_parent(struct dentry *dentry)
 {
 	/* BB need to add code here eventually to enable export via NFSD */
@@ -63,5 +63,5 @@ const struct export_operations cifs_export_ops = {
 	.encode_fs =  */
 };
 
-#endif /* CIFS_NFSD_EXPORT */
+#endif /* CONFIG_CIFS_NFSD_EXPORT */
 

fs/cifs/inode.c

@@ -562,7 +562,16 @@ int cifs_get_file_info(struct file *filp)
 
 	xid = GetXid();
 	rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
-	if (rc == -EOPNOTSUPP || rc == -EINVAL) {
+	switch (rc) {
+	case 0:
+		cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
+		break;
+	case -EREMOTE:
+		cifs_create_dfs_fattr(&fattr, inode->i_sb);
+		rc = 0;
+		break;
+	case -EOPNOTSUPP:
+	case -EINVAL:
 		/*
 		 * FIXME: legacy server -- fall back to path-based call?
 		 * for now, just skip revalidating and mark inode for
@@ -570,18 +579,14 @@ int cifs_get_file_info(struct file *filp)
 		 */
 		rc = 0;
 		CIFS_I(inode)->time = 0;
+	default:
 		goto cgfi_exit;
-	} else if (rc == -EREMOTE) {
-		cifs_create_dfs_fattr(&fattr, inode->i_sb);
-		rc = 0;
-	} else if (rc)
-		goto cgfi_exit;
+	}
 
 	/*
 	 * don't bother with SFU junk here -- just mark inode as needing
 	 * revalidation.
 	 */
-	cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
 	fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
 	fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
 	cifs_fattr_to_inode(inode, &fattr);
@@ -2096,6 +2101,8 @@ static int
 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 {
 	int xid;
+	uid_t uid = NO_CHANGE_32;
+	gid_t gid = NO_CHANGE_32;
 	struct inode *inode = direntry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsInodeInfo *cifsInode = CIFS_I(inode);
@@ -2146,13 +2153,25 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 			goto cifs_setattr_exit;
 	}
 
-	/*
-	 * Without unix extensions we can't send ownership changes to the
-	 * server, so silently ignore them. This is consistent with how
-	 * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With
-	 * CIFSACL support + proper Windows to Unix idmapping, we may be
-	 * able to support this in the future.
-	 */
+	if (attrs->ia_valid & ATTR_UID)
+		uid = attrs->ia_uid;
+
+	if (attrs->ia_valid & ATTR_GID)
+		gid = attrs->ia_gid;
+
+#ifdef CONFIG_CIFS_ACL
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
+		if (uid != NO_CHANGE_32 || gid != NO_CHANGE_32) {
+			rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
+							uid, gid);
+			if (rc) {
+				cFYI(1, "%s: Setting id failed with error: %d",
+					__func__, rc);
+				goto cifs_setattr_exit;
+			}
+		}
+	} else
+#endif /* CONFIG_CIFS_ACL */
 	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
 		attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
 
@@ -2161,15 +2180,12 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 		attrs->ia_valid &= ~ATTR_MODE;
 
 	if (attrs->ia_valid & ATTR_MODE) {
-		cFYI(1, "Mode changed to 0%o", attrs->ia_mode);
 		mode = attrs->ia_mode;
-	}
-
-	if (attrs->ia_valid & ATTR_MODE) {
 		rc = 0;
 #ifdef CONFIG_CIFS_ACL
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
-			rc = mode_to_cifs_acl(inode, full_path, mode);
+			rc = id_mode_to_cifs_acl(inode, full_path, mode,
+						NO_CHANGE_32, NO_CHANGE_32);
 			if (rc) {
 				cFYI(1, "%s: Setting ACL failed with error: %d",
 					__func__, rc);

fs/cifs/link.c

@@ -183,14 +183,20 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
 static int
 CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon,
 		    const char *fromName, const char *toName,
-		    const struct nls_table *nls_codepage, int remap)
+		    struct cifs_sb_info *cifs_sb)
 {
 	int rc;
 	int oplock = 0;
+	int remap;
+	int create_options = CREATE_NOT_DIR;
 	__u16 netfid = 0;
 	u8 *buf;
 	unsigned int bytes_written = 0;
 	struct cifs_io_parms io_parms;
+	struct nls_table *nls_codepage;
+
+	nls_codepage = cifs_sb->local_nls;
+	remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
 
 	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
 	if (!buf)
@@ -202,8 +208,11 @@ CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon,
 		return rc;
 	}
 
+	if (backup_cred(cifs_sb))
+		create_options |= CREATE_OPEN_BACKUP_INTENT;
+
 	rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,
-			 CREATE_NOT_DIR, &netfid, &oplock, NULL,
+			 create_options, &netfid, &oplock, NULL,
 			 nls_codepage, remap);
 	if (rc != 0) {
 		kfree(buf);
@@ -559,9 +568,7 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
 	/* BB what if DFS and this volume is on different share? BB */
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
 		rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
-					 cifs_sb->local_nls,
-					 cifs_sb->mnt_cifs_flags &
-						CIFS_MOUNT_MAP_SPECIAL_CHR);
+					cifs_sb);
 	else if (pTcon->unix_ext)
 		rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
 					   cifs_sb->local_nls);

fs/cifs/misc.c

@@ -420,19 +420,22 @@ check_smb_hdr(struct smb_hdr *smb, __u16 mid)
 }
 
 int
-checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length)
+checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int total_read)
 {
-	__u32 len = be32_to_cpu(smb->smb_buf_length);
+	__u32 rfclen = be32_to_cpu(smb->smb_buf_length);
 	__u32 clc_len;  /* calculated length */
-	cFYI(0, "checkSMB Length: 0x%x, smb_buf_length: 0x%x", length, len);
+	cFYI(0, "checkSMB Length: 0x%x, smb_buf_length: 0x%x",
+		total_read, rfclen);
 
-	if (length < 2 + sizeof(struct smb_hdr)) {
-		if ((length >= sizeof(struct smb_hdr) - 1)
+	/* is this frame too small to even get to a BCC? */
+	if (total_read < 2 + sizeof(struct smb_hdr)) {
+		if ((total_read >= sizeof(struct smb_hdr) - 1)
 			    && (smb->Status.CifsError != 0)) {
+			/* it's an error return */
 			smb->WordCount = 0;
 			/* some error cases do not return wct and bcc */
 			return 0;
-		} else if ((length == sizeof(struct smb_hdr) + 1) &&
+		} else if ((total_read == sizeof(struct smb_hdr) + 1) &&
 				(smb->WordCount == 0)) {
 			char *tmp = (char *)smb;
 			/* Need to work around a bug in two servers here */
@@ -452,39 +455,35 @@ checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length)
 		} else {
 			cERROR(1, "Length less than smb header size");
 		}
-		return 1;
-	}
-	if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
-		cERROR(1, "smb length greater than MaxBufSize, mid=%d",
-				   smb->Mid);
-		return 1;
+		return -EIO;
 	}
 
+	/* otherwise, there is enough to get to the BCC */
 	if (check_smb_hdr(smb, mid))
-		return 1;
+		return -EIO;
 	clc_len = smbCalcSize(smb);
 
-	if (4 + len != length) {
+	if (4 + rfclen != total_read) {
 		cERROR(1, "Length read does not match RFC1001 length %d",
-			   len);
-		return 1;
+				rfclen);
+		return -EIO;
 	}
 
-	if (4 + len != clc_len) {
+	if (4 + rfclen != clc_len) {
 		/* check if bcc wrapped around for large read responses */
-		if ((len > 64 * 1024) && (len > clc_len)) {
+		if ((rfclen > 64 * 1024) && (rfclen > clc_len)) {
 			/* check if lengths match mod 64K */
-			if (((4 + len) & 0xFFFF) == (clc_len & 0xFFFF))
+			if (((4 + rfclen) & 0xFFFF) == (clc_len & 0xFFFF))
 				return 0; /* bcc wrapped */
 		}
 		cFYI(1, "Calculated size %u vs length %u mismatch for mid=%u",
-				clc_len, 4 + len, smb->Mid);
+				clc_len, 4 + rfclen, smb->Mid);
 
-		if (4 + len < clc_len) {
+		if (4 + rfclen < clc_len) {
 			cERROR(1, "RFC1001 size %u smaller than SMB for mid=%u",
-					len, smb->Mid);
-			return 1;
-		} else if (len > clc_len + 512) {
+					rfclen, smb->Mid);
+			return -EIO;
+		} else if (rfclen > clc_len + 512) {
 			/*
 			 * Some servers (Windows XP in particular) send more
 			 * data than the lengths in the SMB packet would
@@ -495,8 +494,8 @@ checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length)
 			 * data to 512 bytes.
 			 */
 			cERROR(1, "RFC1001 size %u more than 512 bytes larger "
-				  "than SMB for mid=%u", len, smb->Mid);
-			return 1;
+				  "than SMB for mid=%u", rfclen, smb->Mid);
+			return -EIO;
 		}
 	}
 	return 0;
@@ -676,3 +675,18 @@ void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
 		cinode->clientCanCacheRead = false;
 	}
 }
+
+bool
+backup_cred(struct cifs_sb_info *cifs_sb)
+{
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) {
+		if (cifs_sb->mnt_backupuid == current_fsuid())
+			return true;
+	}
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) {
+		if (in_group_p(cifs_sb->mnt_backupgid))
+			return true;
+	}
+
+	return false;
+}

fs/cifs/sess.c

@@ -124,7 +124,9 @@ static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB)
 	/*	that we use in next few lines                               */
 	/* Note that header is initialized to zero in header_assemble */
 	pSMB->req.AndXCommand = 0xFF;
-	pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
+	pSMB->req.MaxBufferSize = cpu_to_le16(min_t(u32,
+					CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4,
+					USHRT_MAX));
 	pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
 	pSMB->req.VcNumber = get_next_vcnum(ses);
 

fs/cifs/smbencrypt.c

@@ -265,91 +265,6 @@ E_md4hash(const unsigned char *passwd, unsigned char *p16)
 	return rc;
 }
 
-#if 0 /* currently unused */
-/* Does both the NT and LM owfs of a user's password */
-static void
-nt_lm_owf_gen(char *pwd, unsigned char nt_p16[16], unsigned char p16[16])
-{
-	char passwd[514];
-
-	memset(passwd, '\0', 514);
-	if (strlen(pwd) < 513)
-		strcpy(passwd, pwd);
-	else
-		memcpy(passwd, pwd, 512);
-	/* Calculate the MD4 hash (NT compatible) of the password */
-	memset(nt_p16, '\0', 16);
-	E_md4hash(passwd, nt_p16);
-
-	/* Mangle the passwords into Lanman format */
-	passwd[14] = '\0';
-/*	strupper(passwd); */
-
-	/* Calculate the SMB (lanman) hash functions of the password */
-
-	memset(p16, '\0', 16);
-	E_P16((unsigned char *) passwd, (unsigned char *) p16);
-
-	/* clear out local copy of user's password (just being paranoid). */
-	memset(passwd, '\0', sizeof(passwd));
-}
-#endif
-
-/* Does the NTLMv2 owfs of a user's password */
-#if 0  /* function not needed yet - but will be soon */
-static void
-ntv2_owf_gen(const unsigned char owf[16], const char *user_n,
-		const char *domain_n, unsigned char kr_buf[16],
-		const struct nls_table *nls_codepage)
-{
-	wchar_t *user_u;
-	wchar_t *dom_u;
-	int user_l, domain_l;
-	struct HMACMD5Context ctx;
-
-	/* might as well do one alloc to hold both (user_u and dom_u) */
-	user_u = kmalloc(2048 * sizeof(wchar_t), GFP_KERNEL);
-	if (user_u == NULL)
-		return;
-	dom_u = user_u + 1024;
-
-	/* push_ucs2(NULL, user_u, user_n, (user_l+1)*2,
-			STR_UNICODE|STR_NOALIGN|STR_TERMINATE|STR_UPPER);
-	   push_ucs2(NULL, dom_u, domain_n, (domain_l+1)*2,
-			STR_UNICODE|STR_NOALIGN|STR_TERMINATE|STR_UPPER); */
-
-	/* BB user and domain may need to be uppercased */
-	user_l = cifs_strtoUCS(user_u, user_n, 511, nls_codepage);
-	domain_l = cifs_strtoUCS(dom_u, domain_n, 511, nls_codepage);
-
-	user_l++;		/* trailing null */
-	domain_l++;
-
-	hmac_md5_init_limK_to_64(owf, 16, &ctx);
-	hmac_md5_update((const unsigned char *) user_u, user_l * 2, &ctx);
-	hmac_md5_update((const unsigned char *) dom_u, domain_l * 2, &ctx);
-	hmac_md5_final(kr_buf, &ctx);
-
-	kfree(user_u);
-}
-#endif
-
-/* Does the des encryption from the FIRST 8 BYTES of the NT or LM MD4 hash. */
-#if 0 /* currently unused */
-static void
-NTLMSSPOWFencrypt(unsigned char passwd[8],
-		  unsigned char *ntlmchalresp, unsigned char p24[24])
-{
-	unsigned char p21[21];
-
-	memset(p21, '\0', 21);
-	memcpy(p21, passwd, 8);
-	memset(p21 + 8, 0xbd, 8);
-
-	E_P24(p21, ntlmchalresp, p24);
-}
-#endif
-
 /* Does the NT MD4 hash then des encryption. */
 int
 SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
@@ -369,39 +284,3 @@ SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
 	rc = E_P24(p21, c8, p24);
 	return rc;
 }
-
-
-/* Does the md5 encryption from the NT hash for NTLMv2. */
-/* These routines will be needed later */
-#if 0
-static void
-SMBOWFencrypt_ntv2(const unsigned char kr[16],
-		   const struct data_blob *srv_chal,
-		   const struct data_blob *cli_chal, unsigned char resp_buf[16])
-{
-	struct HMACMD5Context ctx;
-
-	hmac_md5_init_limK_to_64(kr, 16, &ctx);
-	hmac_md5_update(srv_chal->data, srv_chal->length, &ctx);
-	hmac_md5_update(cli_chal->data, cli_chal->length, &ctx);
-	hmac_md5_final(resp_buf, &ctx);
-}
-
-static void
-SMBsesskeygen_ntv2(const unsigned char kr[16],
-		   const unsigned char *nt_resp, __u8 sess_key[16])
-{
-	struct HMACMD5Context ctx;
-
-	hmac_md5_init_limK_to_64(kr, 16, &ctx);
-	hmac_md5_update(nt_resp, 16, &ctx);
-	hmac_md5_final((unsigned char *) sess_key, &ctx);
-}
-
-static void
-SMBsesskeygen_ntv1(const unsigned char kr[16],
-		   const unsigned char *nt_resp, __u8 sess_key[16])
-{
-	mdfour((unsigned char *) sess_key, (unsigned char *) kr, 16);
-}
-#endif

fs/cifs/transport.c

@@ -26,6 +26,7 @@
 #include <linux/wait.h>
 #include <linux/net.h>
 #include <linux/delay.h>
+#include <linux/freezer.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 #include <linux/mempool.h>
@@ -324,7 +325,7 @@ wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ)
 {
 	int error;
 
-	error = wait_event_killable(server->response_q,
+	error = wait_event_freezekillable(server->response_q,
 				    midQ->midState != MID_REQUEST_SUBMITTED);
 	if (error < 0)
 		return -ERESTARTSYS;
@@ -339,8 +340,8 @@ wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ)
  */
 int
 cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
-		unsigned int nvec, mid_callback_t *callback, void *cbdata,
-		bool ignore_pend)
+		unsigned int nvec, mid_receive_t *receive,
+		mid_callback_t *callback, void *cbdata, bool ignore_pend)
 {
 	int rc;
 	struct mid_q_entry *mid;
@@ -374,6 +375,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
 		goto out_err;
 	}
 
+	mid->receive = receive;
 	mid->callback = callback;
 	mid->callback_data = cbdata;
 	mid->midState = MID_REQUEST_SUBMITTED;
@@ -496,13 +498,18 @@ int
 cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
 		   bool log_error)
 {
-	dump_smb(mid->resp_buf,
-		 min_t(u32, 92, be32_to_cpu(mid->resp_buf->smb_buf_length)));
+	unsigned int len = be32_to_cpu(mid->resp_buf->smb_buf_length) + 4;
+
+	dump_smb(mid->resp_buf, min_t(u32, 92, len));
 
 	/* convert the length into a more usable form */
 	if (server->sec_mode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
+		struct kvec iov;
+
+		iov.iov_base = mid->resp_buf;
+		iov.iov_len = len;
 		/* FIXME: add code to kill session */
-		if (cifs_verify_signature(mid->resp_buf, server,
+		if (cifs_verify_signature(&iov, 1, server,
 					  mid->sequence_number + 1) != 0)
 			cERROR(1, "Unexpected SMB signature");
 	}

fs/cifs/xattr.c

@@ -173,7 +173,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
 #ifdef CONFIG_CIFS_ACL
 			memcpy(pacl, ea_value, value_size);
 			rc = set_cifs_acl(pacl, value_size,
-				direntry->d_inode, full_path);
+				direntry->d_inode, full_path, CIFS_ACL_DACL);
 			if (rc == 0) /* force revalidate of the inode */
 				CIFS_I(direntry->d_inode)->time = 0;
 			kfree(pacl);

include/linux/freezer.h

@@ -135,10 +135,25 @@ static inline void set_freezable_with_signal(void)
 }
 
 /*
- * Freezer-friendly wrappers around wait_event_interruptible() and
- * wait_event_interruptible_timeout(), originally defined in <linux/wait.h>
+ * Freezer-friendly wrappers around wait_event_interruptible(),
+ * wait_event_killable() and wait_event_interruptible_timeout(), originally
+ * defined in <linux/wait.h>
  */
 
+#define wait_event_freezekillable(wq, condition)			\
+({									\
+	int __retval;							\
+	do {								\
+		__retval = wait_event_killable(wq,			\
+				(condition) || freezing(current));	\
+		if (__retval && !freezing(current))			\
+			break;						\
+		else if (!(condition))					\
+			__retval = -ERESTARTSYS;			\
+	} while (try_to_freeze());					\
+	__retval;							\
+})
+
 #define wait_event_freezable(wq, condition)				\
 ({									\
 	int __retval;							\
@@ -190,6 +205,9 @@ static inline void set_freezable_with_signal(void) {}
 #define wait_event_freezable_timeout(wq, condition, timeout)		\
 		wait_event_interruptible_timeout(wq, condition, timeout)
 
+#define wait_event_freezekillable(wq, condition)		\
+		wait_event_killable(wq, condition)
+
 #endif /* !CONFIG_FREEZER */
 
 #endif	/* FREEZER_H_INCLUDED */