Merge branch 'linus' into core/iommu

14 files changed, 565 insertions, 334 deletions

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 080703a15f4..851388fafc7 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,13 @@
+Version 1.57
+------------
+Improve support for multiple security contexts to the same server. We
+used to use the same "vcnumber" for all connections which could cause
+the server to treat subsequent connections, especially those that
+are authenticated as guest, as reconnections, invalidating the earlier
+user's smb session.  This fix allows cifs to mount multiple times to the
+same server with different userids without risking invalidating earlier
+established security contexts.
+
 Version 1.56
 ------------
 Add "forcemandatorylock" mount option to allow user to use mandatory
@@ -5,7 +15,12 @@ rather than posix (advisory) byte range locks, even though server would
 support posix byte range locks.  Fix query of root inode when prefixpath
 specified and user does not have access to query information about the
 top of the share.  Fix problem in 2.6.28 resolving DFS paths to
-Samba servers (worked to Windows).
+Samba servers (worked to Windows).  Fix rmdir so that pending search
+(readdir) requests do not get invalid results which include the now
+removed directory.  Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
+when using DFS.  Add better file create support to servers which support
+the CIFS POSIX protocol extensions (this adds support for new flags
+on create, and improves semantics for write of locked ranges).
 
 Version 1.55
 ------------
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index d4839cf0cb2..7c9809523f4 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -48,11 +48,11 @@ static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
 	if ((cifs_pdu == NULL) || (signature == NULL) || (key == NULL))
 		return -EINVAL;
 
-	MD5Init(&context);
-	MD5Update(&context, (char *)&key->data, key->len);
-	MD5Update(&context, cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+	cifs_MD5_init(&context);
+	cifs_MD5_update(&context, (char *)&key->data, key->len);
+	cifs_MD5_update(&context, cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
 
-	MD5Final(signature, &context);
+	cifs_MD5_final(signature, &context);
 	return 0;
 }
 
@@ -96,8 +96,8 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
 	if ((iov == NULL) || (signature == NULL) || (key == NULL))
 		return -EINVAL;
 
-	MD5Init(&context);
-	MD5Update(&context, (char *)&key->data, key->len);
+	cifs_MD5_init(&context);
+	cifs_MD5_update(&context, (char *)&key->data, key->len);
 	for (i = 0; i < n_vec; i++) {
 		if (iov[i].iov_len == 0)
 			continue;
@@ -110,13 +110,13 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
 		if (i == 0) {
 			if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
 				break; /* nothing to sign or corrupt header */
-			MD5Update(&context, iov[0].iov_base+4,
+			cifs_MD5_update(&context, iov[0].iov_base+4,
 				  iov[0].iov_len-4);
 		} else
-			MD5Update(&context, iov[i].iov_base, iov[i].iov_len);
+			cifs_MD5_update(&context, iov[i].iov_base, iov[i].iov_len);
 	}
 
-	MD5Final(signature, &context);
+	cifs_MD5_final(signature, &context);
 
 	return 0;
 }
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 7ac481841f8..2b1d28a9ee2 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -100,5 +100,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* EXPERIMENTAL */
 
-#define CIFS_VERSION   "1.56"
+#define CIFS_VERSION   "1.57"
 #endif				/* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 94c1ca0ec95..e004f6db5fc 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -164,9 +164,12 @@ struct TCP_Server_Info {
 	/* 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 */
@@ -210,6 +213,7 @@ struct cifsSesInfo {
 	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 */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 06f6779988b..083dfc57c7a 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -35,13 +35,14 @@ extern struct smb_hdr *cifs_buf_get(void);
 extern void cifs_buf_release(void *);
 extern struct smb_hdr *cifs_small_buf_get(void);
 extern void cifs_small_buf_release(void *);
-extern int smb_send(struct socket *, struct smb_hdr *,
-			unsigned int /* length */ , struct sockaddr *, bool);
+extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
+			unsigned int /* length */);
 extern unsigned int _GetXid(void);
 extern void _FreeXid(unsigned int);
 #define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current_fsuid()));
 #define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__func__,curr_xid,(int)rc));}
 extern char *build_path_from_dentry(struct dentry *);
+extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb);
 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
 extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
@@ -91,6 +92,9 @@ extern u64 cifs_UnixTimeToNT(struct timespec);
 extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);
 extern struct timespec cnvrtDosUnixTm(__u16 date, __u16 time);
 
+extern void posix_fill_in_inode(struct inode *tmp_inode,
+				FILE_UNIX_BASIC_INFO *pData, int isNewInode);
+extern struct inode *cifs_new_inode(struct super_block *sb, __u64 *inum);
 extern int cifs_get_inode_info(struct inode **pinode,
 			const unsigned char *search_path,
 			FILE_ALL_INFO *pfile_info,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 552642a507c..939e2f76b95 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -528,14 +528,15 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 		server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
 		server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize),
 				(__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
+		server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs);
 		GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey);
 		/* even though we do not use raw we might as well set this
 		accurately, in case we ever find a need for it */
 		if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
-			server->maxRw = 0xFF00;
+			server->max_rw = 0xFF00;
 			server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
 		} else {
-			server->maxRw = 0;/* we do not need to use raw anyway */
+			server->max_rw = 0;/* do not need to use raw anyway */
 			server->capabilities = CAP_MPX_MODE;
 		}
 		tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
@@ -638,7 +639,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 	/* probably no need to store and check maxvcs */
 	server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize),
 			(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
-	server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
+	server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
 	cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf));
 	GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
 	server->capabilities = le32_to_cpu(pSMBr->Capabilities);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index e9ea394ee07..da0f4ffa061 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -23,7 +23,6 @@
 #include <linux/string.h>
 #include <linux/list.h>
 #include <linux/wait.h>
-#include <linux/ipv6.h>
 #include <linux/pagemap.h>
 #include <linux/ctype.h>
 #include <linux/utsname.h>
@@ -35,6 +34,7 @@
 #include <linux/freezer.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
+#include <net/ipv6.h>
 #include "cifspdu.h"
 #include "cifsglob.h"
 #include "cifsproto.h"
@@ -1354,7 +1354,7 @@ cifs_parse_mount_options(char *options, const char *devname,
 }
 
 static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr *addr)
+cifs_find_tcp_session(struct sockaddr_storage *addr)
 {
 	struct list_head *tmp;
 	struct TCP_Server_Info *server;
@@ -1374,13 +1374,13 @@ cifs_find_tcp_session(struct sockaddr *addr)
 		if (server->tcpStatus == CifsNew)
 			continue;
 
-		if (addr->sa_family == AF_INET &&
+		if (addr->ss_family == AF_INET &&
 		    (addr4->sin_addr.s_addr !=
 		     server->addr.sockAddr.sin_addr.s_addr))
 			continue;
-		else if (addr->sa_family == AF_INET6 &&
-			 memcmp(&server->addr.sockAddr6.sin6_addr,
-				&addr6->sin6_addr, sizeof(addr6->sin6_addr)))
+		else if (addr->ss_family == AF_INET6 &&
+			 !ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr,
+					  &addr6->sin6_addr))
 			continue;
 
 		++server->srv_count;
@@ -1419,12 +1419,12 @@ static struct TCP_Server_Info *
 cifs_get_tcp_session(struct smb_vol *volume_info)
 {
 	struct TCP_Server_Info *tcp_ses = NULL;
-	struct sockaddr addr;
+	struct sockaddr_storage addr;
 	struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
 	struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
 	int rc;
 
-	memset(&addr, 0, sizeof(struct sockaddr));
+	memset(&addr, 0, sizeof(struct sockaddr_storage));
 
 	if (volume_info->UNCip && volume_info->UNC) {
 		rc = cifs_inet_pton(AF_INET, volume_info->UNCip,
@@ -1435,9 +1435,9 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
 			rc = cifs_inet_pton(AF_INET6, volume_info->UNCip,
 					    &sin_server6->sin6_addr.in6_u);
 			if (rc > 0)
-				addr.sa_family = AF_INET6;
+				addr.ss_family = AF_INET6;
 		} else {
-			addr.sa_family = AF_INET;
+			addr.ss_family = AF_INET;
 		}
 
 		if (rc <= 0) {
@@ -1502,7 +1502,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
 	tcp_ses->tcpStatus = CifsNew;
 	++tcp_ses->srv_count;
 
-	if (addr.sa_family == AF_INET6) {
+	if (addr.ss_family == AF_INET6) {
 		cFYI(1, ("attempting ipv6 connect"));
 		/* BB should we allow ipv6 on port 139? */
 		/* other OS never observed in Wild doing 139 with v6 */
@@ -1802,7 +1802,7 @@ ipv4_connect(struct TCP_Server_Info *server)
 	 *  user space buffer
 	 */
 	socket->sk->sk_rcvtimeo = 7 * HZ;
-	socket->sk->sk_sndtimeo = 3 * HZ;
+	socket->sk->sk_sndtimeo = 5 * HZ;
 
 	/* make the bufsizes depend on wsize/rsize and max requests */
 	if (server->noautotune) {
@@ -1860,9 +1860,7 @@ ipv4_connect(struct TCP_Server_Info *server)
 			smb_buf = (struct smb_hdr *)ses_init_buf;
 			/* sizeof RFC1002_SESSION_REQUEST with no scope */
 			smb_buf->smb_buf_length = 0x81000044;
-			rc = smb_send(socket, smb_buf, 0x44,
-				(struct sockaddr *) &server->addr.sockAddr,
-				server->noblocksnd);
+			rc = smb_send(server, smb_buf, 0x44);
 			kfree(ses_init_buf);
 			msleep(1); /* RFC1001 layer in at least one server
 				      requires very short break before negprot
@@ -1955,7 +1953,7 @@ ipv6_connect(struct TCP_Server_Info *server)
 	 * user space buffer
 	 */
 	socket->sk->sk_rcvtimeo = 7 * HZ;
-	socket->sk->sk_sndtimeo = 3 * HZ;
+	socket->sk->sk_sndtimeo = 5 * HZ;
 	server->ssocket = socket;
 
 	return rc;
@@ -2182,6 +2180,33 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info,
 			   "mount option supported"));
 }
 
+static int
+is_path_accessible(int xid, struct cifsTconInfo *tcon,
+		   struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+	int rc;
+	__u64 inode_num;
+	FILE_ALL_INFO *pfile_info;
+
+	rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num,
+				   cifs_sb->local_nls,
+				   cifs_sb->mnt_cifs_flags &
+						CIFS_MOUNT_MAP_SPECIAL_CHR);
+	if (rc != -EOPNOTSUPP)
+		return rc;
+
+	pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+	if (pfile_info == NULL)
+		return -ENOMEM;
+
+	rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info,
+			      0 /* not legacy */, cifs_sb->local_nls,
+			      cifs_sb->mnt_cifs_flags &
+				CIFS_MOUNT_MAP_SPECIAL_CHR);
+	kfree(pfile_info);
+	return rc;
+}
+
 int
 cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 	   char *mount_data, const char *devname)
@@ -2192,6 +2217,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 	struct cifsSesInfo *pSesInfo = NULL;
 	struct cifsTconInfo *tcon = NULL;
 	struct TCP_Server_Info *srvTcp = NULL;
+	char   *full_path;
 
 	xid = GetXid();
 
@@ -2428,6 +2454,23 @@ mount_fail_check:
 		cifs_sb->rsize = min(cifs_sb->rsize,
 			       (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
 
+	if (!rc && cifs_sb->prepathlen) {
+		/* build_path_to_root works only when we have a valid tcon */
+		full_path = cifs_build_path_to_root(cifs_sb);
+		if (full_path == NULL) {
+			rc = -ENOMEM;
+			goto mount_fail_check;
+		}
+		rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
+		if (rc) {
+			cERROR(1, ("Path %s in not accessible: %d",
+						full_path, rc));
+			kfree(full_path);
+			goto mount_fail_check;
+		}
+		kfree(full_path);
+	}
+
 	/* volume_info->password is freed above when existing session found
 	(in which case it is not needed anymore) but when new sesion is created
 	the password ptr is put in the new session structure (in which case the
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 838d9c720a5..89fb7283265 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -3,7 +3,7 @@
  *
  *   vfs operations that deal with dentries
  *
- *   Copyright (C) International Business Machines  Corp., 2002,2008
+ *   Copyright (C) International Business Machines  Corp., 2002,2009
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -129,6 +129,89 @@ cifs_bp_rename_retry:
 	return full_path;
 }
 
+static int cifs_posix_open(char *full_path, struct inode **pinode,
+		    struct super_block *sb, int mode, int oflags,
+		    int *poplock, __u16 *pnetfid, int xid)
+{
+	int rc;
+	__u32 oplock;
+	FILE_UNIX_BASIC_INFO *presp_data;
+	__u32 posix_flags = 0;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+
+	cFYI(1, ("posix open %s", full_path));
+
+	presp_data = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
+	if (presp_data == NULL)
+		return -ENOMEM;
+
+/* So far cifs posix extensions can only map the following flags.
+   There are other valid fmode oflags such as FMODE_LSEEK, FMODE_PREAD, but
+   so far we do not seem to need them, and we can treat them as local only */
+	if ((oflags & (FMODE_READ | FMODE_WRITE)) ==
+		(FMODE_READ | FMODE_WRITE))
+		posix_flags = SMB_O_RDWR;
+	else if (oflags & FMODE_READ)
+		posix_flags = SMB_O_RDONLY;
+	else if (oflags & FMODE_WRITE)
+		posix_flags = SMB_O_WRONLY;
+	if (oflags & O_CREAT)
+		posix_flags |= SMB_O_CREAT;
+	if (oflags & O_EXCL)
+		posix_flags |= SMB_O_EXCL;
+	if (oflags & O_TRUNC)
+		posix_flags |= SMB_O_TRUNC;
+	if (oflags & O_APPEND)
+		posix_flags |= SMB_O_APPEND;
+	if (oflags & O_SYNC)
+		posix_flags |= SMB_O_SYNC;
+	if (oflags & O_DIRECTORY)
+		posix_flags |= SMB_O_DIRECTORY;
+	if (oflags & O_NOFOLLOW)
+		posix_flags |= SMB_O_NOFOLLOW;
+	if (oflags & O_DIRECT)
+		posix_flags |= SMB_O_DIRECT;
+
+
+	rc = CIFSPOSIXCreate(xid, cifs_sb->tcon, posix_flags, mode,
+			pnetfid, presp_data, &oplock, full_path,
+			cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+					CIFS_MOUNT_MAP_SPECIAL_CHR);
+	if (rc)
+		goto posix_open_ret;
+
+	if (presp_data->Type == cpu_to_le32(-1))
+		goto posix_open_ret; /* open ok, caller does qpathinfo */
+
+	/* get new inode and set it up */
+	if (!pinode)
+		goto posix_open_ret; /* caller does not need info */
+
+	*pinode = cifs_new_inode(sb, &presp_data->UniqueId);
+
+	/* We do not need to close the file if new_inode fails since
+	   the caller will retry qpathinfo as long as inode is null */
+	if (*pinode == NULL)
+		goto posix_open_ret;
+
+	posix_fill_in_inode(*pinode, presp_data, 1);
+
+posix_open_ret:
+	kfree(presp_data);
+	return rc;
+}
+
+static void setup_cifs_dentry(struct cifsTconInfo *tcon,
+			      struct dentry *direntry,
+			      struct inode *newinode)
+{
+	if (tcon->nocase)
+		direntry->d_op = &cifs_ci_dentry_ops;
+	else
+		direntry->d_op = &cifs_dentry_ops;
+	d_instantiate(direntry, newinode);
+}
+
 /* Inode operations in similar order to how they appear in Linux file fs.h */
 
 int
@@ -139,14 +222,21 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	int xid;
 	int create_options = CREATE_NOT_DIR;
 	int oplock = 0;
+	int oflags;
+	/*
+	 * BB below access is probably too much for mknod to request
+	 *    but we have to do query and setpathinfo so requesting
+	 *    less could fail (unless we want to request getatr and setatr
+	 *    permissions (only).  At least for POSIX we do not have to
+	 *    request so much.
+	 */
 	int desiredAccess = GENERIC_READ | GENERIC_WRITE;
 	__u16 fileHandle;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifsTconInfo *tcon;
 	char *full_path = NULL;
 	FILE_ALL_INFO *buf = NULL;
 	struct inode *newinode = NULL;
-	struct cifsFileInfo *pCifsFile = NULL;
 	struct cifsInodeInfo *pCifsInode;
 	int disposition = FILE_OVERWRITE_IF;
 	bool write_only = false;
@@ -154,7 +244,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	xid = GetXid();
 
 	cifs_sb = CIFS_SB(inode->i_sb);
-	pTcon = cifs_sb->tcon;
+	tcon = cifs_sb->tcon;
 
 	full_path = build_path_from_dentry(direntry);
 	if (full_path == NULL) {
@@ -162,12 +252,44 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 		return -ENOMEM;
 	}
 
-	if (nd && (nd->flags & LOOKUP_OPEN)) {
-		int oflags = nd->intent.open.flags;
+	mode &= ~current->fs->umask;
+	if (oplockEnabled)
+		oplock = REQ_OPLOCK;
+
+	if (nd && (nd->flags & LOOKUP_OPEN))
+		oflags = nd->intent.open.flags;
+	else
+		oflags = FMODE_READ;
+
+	if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
+	    (CIFS_UNIX_POSIX_PATH_OPS_CAP &
+			le64_to_cpu(tcon->fsUnixInfo.Capability))) {
+		rc = cifs_posix_open(full_path, &newinode, inode->i_sb,
+				     mode, oflags, &oplock, &fileHandle, xid);
+		/* EIO could indicate that (posix open) operation is not
+		   supported, despite what server claimed in capability
+		   negotation.  EREMOTE indicates DFS junction, which is not
+		   handled in posix open */
+
+		if ((rc == 0) && (newinode == NULL))
+			goto cifs_create_get_file_info; /* query inode info */
+		else if (rc == 0) /* success, no need to query */
+			goto cifs_create_set_dentry;
+		else if ((rc != -EIO) && (rc != -EREMOTE) &&
+			 (rc != -EOPNOTSUPP)) /* path not found or net err */
+			goto cifs_create_out;
+		/* else fallthrough to retry, using older open call, this is
+		   case where server does not support this SMB level, and
+		   falsely claims capability (also get here for DFS case
+		   which should be rare for path not covered on files) */
+	}
 
+	if (nd && (nd->flags & LOOKUP_OPEN)) {
+		/* if the file is going to stay open, then we
+		   need to set the desired access properly */
 		desiredAccess = 0;
 		if (oflags & FMODE_READ)
-			desiredAccess |= GENERIC_READ;
+			desiredAccess |= GENERIC_READ; /* is this too little? */
 		if (oflags & FMODE_WRITE) {
 			desiredAccess |= GENERIC_WRITE;
 			if (!(oflags & FMODE_READ))
@@ -186,8 +308,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 
 	/* BB add processing to set equivalent of mode - e.g. via CreateX with
 	   ACLs */
-	if (oplockEnabled)
-		oplock = REQ_OPLOCK;
 
 	buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
 	if (buf == NULL) {
@@ -196,17 +316,15 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 		return -ENOMEM;
 	}
 
-	mode &= ~current->fs->umask;
-
 	/*
 	 * if we're not using unix extensions, see if we need to set
 	 * ATTR_READONLY on the create call
 	 */
-	if (!pTcon->unix_ext && (mode & S_IWUGO) == 0)
+	if (!tcon->unix_ext && (mode & S_IWUGO) == 0)
 		create_options |= CREATE_OPTION_READONLY;
 
 	if (cifs_sb->tcon->ses->capabilities & CAP_NT_SMBS)
-		rc = CIFSSMBOpen(xid, pTcon, full_path, disposition,
+		rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
 			 desiredAccess, create_options,
 			 &fileHandle, &oplock, buf, cifs_sb->local_nls,
 			 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -215,128 +333,119 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 
 	if (rc == -EIO) {
 		/* old server, retry the open legacy style */
-		rc = SMBLegacyOpen(xid, pTcon, full_path, disposition,
+		rc = SMBLegacyOpen(xid, tcon, full_path, disposition,
 			desiredAccess, create_options,
 			&fileHandle, &oplock, buf, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
 	}
 	if (rc) {
 		cFYI(1, ("cifs_create returned 0x%x", rc));
-	} else {
-		/* If Open reported that we actually created a file
-		then we now have to set the mode if possible */
-		if ((pTcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
-			struct cifs_unix_set_info_args args = {
+		goto cifs_create_out;
+	}
+
+	/* If Open reported that we actually created a file
+	   then we now have to set the mode if possible */
+	if ((tcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
+		struct cifs_unix_set_info_args args = {
 				.mode	= mode,
 				.ctime	= NO_CHANGE_64,
 				.atime	= NO_CHANGE_64,
 				.mtime	= NO_CHANGE_64,
 				.device	= 0,
-			};
+		};
 
-			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
-				args.uid = (__u64) current_fsuid();
-				if (inode->i_mode & S_ISGID)
-					args.gid = (__u64) inode->i_gid;
-				else
-					args.gid = (__u64) current_fsgid();
-			} else {
-				args.uid = NO_CHANGE_64;
-				args.gid = NO_CHANGE_64;
-			}
-			CIFSSMBUnixSetInfo(xid, pTcon, full_path, &args,
-				cifs_sb->local_nls,
-				cifs_sb->mnt_cifs_flags &
-					CIFS_MOUNT_MAP_SPECIAL_CHR);
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
+			args.uid = (__u64) current_fsuid();
+			if (inode->i_mode & S_ISGID)
+				args.gid = (__u64) inode->i_gid;
+			else
+				args.gid = (__u64) current_fsgid();
 		} else {
-			/* BB implement mode setting via Windows security
-			   descriptors e.g. */
-			/* CIFSSMBWinSetPerms(xid,pTcon,path,mode,-1,-1,nls);*/
-
-			/* Could set r/o dos attribute if mode & 0222 == 0 */
+			args.uid = NO_CHANGE_64;
+			args.gid = NO_CHANGE_64;
 		}
+		CIFSSMBUnixSetInfo(xid, tcon, full_path, &args,
+			cifs_sb->local_nls,
+			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+	} else {
+		/* BB implement mode setting via Windows security
+		   descriptors e.g. */
+		/* CIFSSMBWinSetPerms(xid,tcon,path,mode,-1,-1,nls);*/
 
-		/* server might mask mode so we have to query for it */
-		if (pTcon->unix_ext)
-			rc = cifs_get_inode_info_unix(&newinode, full_path,
-						 inode->i_sb, xid);
-		else {
-			rc = cifs_get_inode_info(&newinode, full_path,
-						 buf, inode->i_sb, xid,
-						 &fileHandle);
-			if (newinode) {
-				if (cifs_sb->mnt_cifs_flags &
-				    CIFS_MOUNT_DYNPERM)
-					newinode->i_mode = mode;
-				if ((oplock & CIFS_CREATE_ACTION) &&
-				    (cifs_sb->mnt_cifs_flags &
-				     CIFS_MOUNT_SET_UID)) {
-					newinode->i_uid = current_fsuid();
-					if (inode->i_mode & S_ISGID)
-						newinode->i_gid =
-							inode->i_gid;
-					else
-						newinode->i_gid =
-							current_fsgid();
-				}
+		/* Could set r/o dos attribute if mode & 0222 == 0 */
+	}
+
+cifs_create_get_file_info:
+	/* server might mask mode so we have to query for it */
+	if (tcon->unix_ext)
+		rc = cifs_get_inode_info_unix(&newinode, full_path,
+					      inode->i_sb, xid);
+	else {
+		rc = cifs_get_inode_info(&newinode, full_path, buf,
+					 inode->i_sb, xid, &fileHandle);
+		if (newinode) {
+			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
+				newinode->i_mode = mode;
+			if ((oplock & CIFS_CREATE_ACTION) &&
+			    (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
+				newinode->i_uid = current_fsuid();
+				if (inode->i_mode & S_ISGID)
+					newinode->i_gid = inode->i_gid;
+				else
+					newinode->i_gid = current_fsgid();
 			}
 		}
+	}
 
-		if (rc != 0) {
-			cFYI(1,
-			     ("Create worked but get_inode_info failed rc = %d",
-			      rc));
-		} else {
-			if (pTcon->nocase)
-				direntry->d_op = &cifs_ci_dentry_ops;
-			else
-				direntry->d_op = &cifs_dentry_ops;
-			d_instantiate(direntry, newinode);
-		}
-		if ((nd == NULL /* nfsd case - nfs srv does not set nd */) ||
-			(!(nd->flags & LOOKUP_OPEN))) {
-			/* mknod case - do not leave file open */
-			CIFSSMBClose(xid, pTcon, fileHandle);
-		} else if (newinode) {
-			pCifsFile =
-			   kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
-
-			if (pCifsFile == NULL)
-				goto cifs_create_out;
-			pCifsFile->netfid = fileHandle;
-			pCifsFile->pid = current->tgid;
-			pCifsFile->pInode = newinode;
-			pCifsFile->invalidHandle = false;
-			pCifsFile->closePend     = false;
-			init_MUTEX(&pCifsFile->fh_sem);
-			mutex_init(&pCifsFile->lock_mutex);
-			INIT_LIST_HEAD(&pCifsFile->llist);
-			atomic_set(&pCifsFile->wrtPending, 0);
-
-			/* set the following in open now
+cifs_create_set_dentry:
+	if (rc == 0)
+		setup_cifs_dentry(tcon, direntry, newinode);
+	else
+		cFYI(1, ("Create worked, get_inode_info failed rc = %d", rc));
+
+	/* nfsd case - nfs srv does not set nd */
+	if ((nd == NULL) || (!(nd->flags & LOOKUP_OPEN))) {
+		/* mknod case - do not leave file open */
+		CIFSSMBClose(xid, tcon, fileHandle);
+	} else if (newinode) {
+		struct cifsFileInfo *pCifsFile =
+			kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
+
+		if (pCifsFile == NULL)
+			goto cifs_create_out;
+		pCifsFile->netfid = fileHandle;
+		pCifsFile->pid = current->tgid;
+		pCifsFile->pInode = newinode;
+		pCifsFile->invalidHandle = false;
+		pCifsFile->closePend     = false;
+		init_MUTEX(&pCifsFile->fh_sem);
+		mutex_init(&pCifsFile->lock_mutex);
+		INIT_LIST_HEAD(&pCifsFile->llist);
+		atomic_set(&pCifsFile->wrtPending, 0);
+
+		/* set the following in open now
 				pCifsFile->pfile = file; */
-			write_lock(&GlobalSMBSeslock);
-			list_add(&pCifsFile->tlist, &pTcon->openFileList);
-			pCifsInode = CIFS_I(newinode);
-			if (pCifsInode) {
-				/* if readable file instance put first in list*/
-				if (write_only) {
-					list_add_tail(&pCifsFile->flist,
-						&pCifsInode->openFileList);
-				} else {
-					list_add(&pCifsFile->flist,
-						&pCifsInode->openFileList);
-				}
-				if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
-					pCifsInode->clientCanCacheAll = true;
-					pCifsInode->clientCanCacheRead = true;
-					cFYI(1, ("Exclusive Oplock inode %p",
-						newinode));
-				} else if ((oplock & 0xF) == OPLOCK_READ)
-					pCifsInode->clientCanCacheRead = true;
+		write_lock(&GlobalSMBSeslock);
+		list_add(&pCifsFile->tlist, &tcon->openFileList);
+		pCifsInode = CIFS_I(newinode);
+		if (pCifsInode) {
+			/* if readable file instance put first in list*/
+			if (write_only) {
+				list_add_tail(&pCifsFile->flist,
+					      &pCifsInode->openFileList);
+			} else {
+				list_add(&pCifsFile->flist,
+					 &pCifsInode->openFileList);
 			}
-			write_unlock(&GlobalSMBSeslock);
+			if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+				pCifsInode->clientCanCacheAll = true;
+				pCifsInode->clientCanCacheRead = true;
+				cFYI(1, ("Exclusive Oplock inode %p",
+					newinode));
+			} else if ((oplock & 0xF) == OPLOCK_READ)
+				pCifsInode->clientCanCacheRead = true;
 		}
+		write_unlock(&GlobalSMBSeslock);
 	}
 cifs_create_out:
 	kfree(buf);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 5ab9896fdcb..4690a360c85 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -199,6 +199,49 @@ static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat,
 	pfnd_dat->Gid = cpu_to_le64(pinode->i_gid);
 }
 
+/**
+ * cifs_new inode - create new inode, initialize, and hash it
+ * @sb - pointer to superblock
+ * @inum - if valid pointer and serverino is enabled, replace i_ino with val
+ *
+ * Create a new inode, initialize it for CIFS and hash it. Returns the new
+ * inode or NULL if one couldn't be allocated.
+ *
+ * If the share isn't mounted with "serverino" or inum is a NULL pointer then
+ * we'll just use the inode number assigned by new_inode(). Note that this can
+ * mean i_ino collisions since the i_ino assigned by new_inode is not
+ * guaranteed to be unique.
+ */
+struct inode *
+cifs_new_inode(struct super_block *sb, __u64 *inum)
+{
+	struct inode *inode;
+
+	inode = new_inode(sb);
+	if (inode == NULL)
+		return NULL;
+
+	/*
+	 * BB: Is i_ino == 0 legal? Here, we assume that it is. If it isn't we
+	 *     stop passing inum as ptr. Are there sanity checks we can use to
+	 *     ensure that the server is really filling in that field? Also,
+	 *     if serverino is disabled, perhaps we should be using iunique()?
+	 */
+	if (inum && (CIFS_SB(sb)->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM))
+		inode->i_ino = (unsigned long) *inum;
+
+	/*
+	 * must set this here instead of cifs_alloc_inode since VFS will
+	 * clobber i_flags
+	 */
+	if (sb->s_flags & MS_NOATIME)
+		inode->i_flags |= S_NOATIME | S_NOCMTIME;
+
+	insert_inode_hash(inode);
+
+	return inode;
+}
+
 int cifs_get_inode_info_unix(struct inode **pinode,
 	const unsigned char *full_path, struct super_block *sb, int xid)
 {
@@ -233,22 +276,11 @@ int cifs_get_inode_info_unix(struct inode **pinode,
 
 	/* get new inode */
 	if (*pinode == NULL) {
-		*pinode = new_inode(sb);
+		*pinode = cifs_new_inode(sb, &find_data.UniqueId);
 		if (*pinode == NULL) {
 			rc = -ENOMEM;
 			goto cgiiu_exit;
 		}
-		/* Is an i_ino of zero legal? */
-		/* note ino incremented to unique num in new_inode */
-		/* Are there sanity checks we can use to ensure that
-		   the server is really filling in that field? */
-		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
-			(*pinode)->i_ino = (unsigned long)find_data.UniqueId;
-
-		if (sb->s_flags & MS_NOATIME)
-			(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
-
-		insert_inode_hash(*pinode);
 	}
 
 	inode = *pinode;
@@ -465,11 +497,9 @@ int cifs_get_inode_info(struct inode **pinode,
 
 	/* get new inode */
 	if (*pinode == NULL) {
-		*pinode = new_inode(sb);
-		if (*pinode == NULL) {
-			rc = -ENOMEM;
-			goto cgii_exit;
-		}
+		__u64 inode_num;
+		__u64 *pinum = &inode_num;
+
 		/* Is an i_ino of zero legal? Can we use that to check
 		   if the server supports returning inode numbers?  Are
 		   there other sanity checks we can use to ensure that
@@ -486,22 +516,26 @@ int cifs_get_inode_info(struct inode **pinode,
 
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
 			int rc1 = 0;
-			__u64 inode_num;
 
 			rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
-					full_path, &inode_num,
+					full_path, pinum,
 					cifs_sb->local_nls,
 					cifs_sb->mnt_cifs_flags &
 						CIFS_MOUNT_MAP_SPECIAL_CHR);
 			if (rc1) {
 				cFYI(1, ("GetSrvInodeNum rc %d", rc1));
+				pinum = NULL;
 				/* BB EOPNOSUPP disable SERVER_INUM? */
-			} else /* do we need cast or hash to ino? */
-				(*pinode)->i_ino = inode_num;
-		} /* else ino incremented to unique num in new_inode*/
-		if (sb->s_flags & MS_NOATIME)
-			(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
-		insert_inode_hash(*pinode);
+			}
+		} else {
+			pinum = NULL;
+		}
+
+		*pinode = cifs_new_inode(sb, pinum);
+		if (*pinode == NULL) {
+			rc = -ENOMEM;
+			goto cgii_exit;
+		}
 	}
 	inode = *pinode;
 	cifsInfo = CIFS_I(inode);
@@ -621,7 +655,7 @@ static const struct inode_operations cifs_ipc_inode_ops = {
 	.lookup = cifs_lookup,
 };
 
-static char *build_path_to_root(struct cifs_sb_info *cifs_sb)
+char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
 {
 	int pplen = cifs_sb->prepathlen;
 	int dfsplen;
@@ -678,7 +712,7 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
 		return inode;
 
 	cifs_sb = CIFS_SB(inode->i_sb);
-	full_path = build_path_to_root(cifs_sb);
+	full_path = cifs_build_path_to_root(cifs_sb);
 	if (full_path == NULL)
 		return ERR_PTR(-ENOMEM);
 
@@ -1017,7 +1051,7 @@ out_reval:
 	return rc;
 }
 
-static void posix_fill_in_inode(struct inode *tmp_inode,
+void posix_fill_in_inode(struct inode *tmp_inode,
 	FILE_UNIX_BASIC_INFO *pData, int isNewInode)
 {
 	struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
@@ -1114,24 +1148,14 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 			else
 				direntry->d_op = &cifs_dentry_ops;
 
-			newinode = new_inode(inode->i_sb);
+			newinode = cifs_new_inode(inode->i_sb,
+						  &pInfo->UniqueId);
 			if (newinode == NULL) {
 				kfree(pInfo);
 				goto mkdir_get_info;
 			}
 
-			/* Is an i_ino of zero legal? */
-			/* Are there sanity checks we can use to ensure that
-			   the server is really filling in that field? */
-			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
-				newinode->i_ino =
-					(unsigned long)pInfo->UniqueId;
-			} /* note ino incremented to unique num in new_inode */
-			if (inode->i_sb->s_flags & MS_NOATIME)
-				newinode->i_flags |= S_NOATIME | S_NOCMTIME;
 			newinode->i_nlink = 2;
-
-			insert_inode_hash(newinode);
 			d_instantiate(direntry, newinode);
 
 			/* we already checked in POSIXCreate whether
@@ -1285,6 +1309,11 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
 	cifsInode = CIFS_I(direntry->d_inode);
 	cifsInode->time = 0;	/* force revalidate to go get info when
 				   needed */
+
+	cifsInode = CIFS_I(inode);
+	cifsInode->time = 0;	/* force revalidate to get parent dir info
+				   since cached search results now invalid */
+
 	direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
 		current_fs_time(inode->i_sb);
 
diff --git a/fs/cifs/md5.c b/fs/cifs/md5.c
index 462bbfefd4b..98b66a54c31 100644
--- a/fs/cifs/md5.c
+++ b/fs/cifs/md5.c
@@ -10,8 +10,8 @@
  * with every copy.
  *
  * To compute the message digest of a chunk of bytes, declare an
- * MD5Context structure, pass it to MD5Init, call MD5Update as
- * needed on buffers full of bytes, and then call MD5Final, which
+ * MD5Context structure, pass it to cifs_MD5_init, call cifs_MD5_update as
+ * needed on buffers full of bytes, and then call cifs_MD5_final, which
  * will fill a supplied 16-byte array with the digest.
  */
 
@@ -45,7 +45,7 @@ byteReverse(unsigned char *buf, unsigned longs)
  * initialization constants.
  */
 void
-MD5Init(struct MD5Context *ctx)
+cifs_MD5_init(struct MD5Context *ctx)
 {
 	ctx->buf[0] = 0x67452301;
 	ctx->buf[1] = 0xefcdab89;
@@ -61,7 +61,7 @@ MD5Init(struct MD5Context *ctx)
  * of bytes.
  */
 void
-MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
+cifs_MD5_update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
 {
 	register __u32 t;
 
@@ -110,7 +110,7 @@ MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
  * 1 0* (64-bit count of bits processed, MSB-first)
  */
 void
-MD5Final(unsigned char digest[16], struct MD5Context *ctx)
+cifs_MD5_final(unsigned char digest[16], struct MD5Context *ctx)
 {
 	unsigned int count;
 	unsigned char *p;
@@ -165,7 +165,7 @@ MD5Final(unsigned char digest[16], struct MD5Context *ctx)
 
 /*
  * The core of the MD5 algorithm, this alters an existing MD5 hash to
- * reflect the addition of 16 longwords of new data.  MD5Update blocks
+ * reflect the addition of 16 longwords of new data.  cifs_MD5_update blocks
  * the data and converts bytes into longwords for this routine.
  */
 static void
@@ -267,9 +267,9 @@ hmac_md5_init_rfc2104(unsigned char *key, int key_len,
 		unsigned char tk[16];
 		struct MD5Context tctx;
 
-		MD5Init(&tctx);
-		MD5Update(&tctx, key, key_len);
-		MD5Final(tk, &tctx);
+		cifs_MD5_init(&tctx);
+		cifs_MD5_update(&tctx, key, key_len);
+		cifs_MD5_final(tk, &tctx);
 
 		key = tk;
 		key_len = 16;
@@ -287,8 +287,8 @@ hmac_md5_init_rfc2104(unsigned char *key, int key_len,
 		ctx->k_opad[i] ^= 0x5c;
 	}
 
-	MD5Init(&ctx->ctx);
-	MD5Update(&ctx->ctx, ctx->k_ipad, 64);
+	cifs_MD5_init(&ctx->ctx);
+	cifs_MD5_update(&ctx->ctx, ctx->k_ipad, 64);
 }
 #endif
 
@@ -317,8 +317,8 @@ hmac_md5_init_limK_to_64(const unsigned char *key, int key_len,
 		ctx->k_opad[i] ^= 0x5c;
 	}
 
-	MD5Init(&ctx->ctx);
-	MD5Update(&ctx->ctx, ctx->k_ipad, 64);
+	cifs_MD5_init(&ctx->ctx);
+	cifs_MD5_update(&ctx->ctx, ctx->k_ipad, 64);
 }
 
 /***********************************************************************
@@ -328,7 +328,7 @@ void
 hmac_md5_update(const unsigned char *text, int text_len,
 		struct HMACMD5Context *ctx)
 {
-	MD5Update(&ctx->ctx, text, text_len);	/* then text of datagram */
+	cifs_MD5_update(&ctx->ctx, text, text_len);	/* then text of datagram */
 }
 
 /***********************************************************************
@@ -339,12 +339,12 @@ hmac_md5_final(unsigned char *digest, struct HMACMD5Context *ctx)
 {
 	struct MD5Context ctx_o;
 
-	MD5Final(digest, &ctx->ctx);
+	cifs_MD5_final(digest, &ctx->ctx);
 
-	MD5Init(&ctx_o);
-	MD5Update(&ctx_o, ctx->k_opad, 64);
-	MD5Update(&ctx_o, digest, 16);
-	MD5Final(digest, &ctx_o);
+	cifs_MD5_init(&ctx_o);
+	cifs_MD5_update(&ctx_o, ctx->k_opad, 64);
+	cifs_MD5_update(&ctx_o, digest, 16);
+	cifs_MD5_final(digest, &ctx_o);
 }
 
 /***********************************************************
diff --git a/fs/cifs/md5.h b/fs/cifs/md5.h
index f7d4f4197ba..6fba8cb402f 100644
--- a/fs/cifs/md5.h
+++ b/fs/cifs/md5.h
@@ -20,10 +20,10 @@ struct HMACMD5Context {
 };
 #endif				/* _HMAC_MD5_H */
 
-void MD5Init(struct MD5Context *context);
-void MD5Update(struct MD5Context *context, unsigned char const *buf,
+void cifs_MD5_init(struct MD5Context *context);
+void cifs_MD5_update(struct MD5Context *context, unsigned char const *buf,
 			unsigned len);
-void MD5Final(unsigned char digest[16], struct MD5Context *context);
+void cifs_MD5_final(unsigned char digest[16], struct MD5Context *context);
 
 /* The following definitions come from lib/hmacmd5.c  */
 
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 9f51f9bf029..c2c01ff4c32 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -56,35 +56,34 @@ static inline void dump_cifs_file_struct(struct file *file, char *label)
 }
 #endif /* DEBUG2 */
 
-/* Returns one if new inode created (which therefore needs to be hashed) */
+/* Returns 1 if new inode created, 2 if both dentry and inode were */
 /* Might check in the future if inode number changed so we can rehash inode */
-static int construct_dentry(struct qstr *qstring, struct file *file,
-	struct inode **ptmp_inode, struct dentry **pnew_dentry)
+static int
+construct_dentry(struct qstr *qstring, struct file *file,
+		 struct inode **ptmp_inode, struct dentry **pnew_dentry,
+		 __u64 *inum)
 {
-	struct dentry *tmp_dentry;
-	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct dentry *tmp_dentry = NULL;
+	struct super_block *sb = file->f_path.dentry->d_sb;
 	int rc = 0;
 
 	cFYI(1, ("For %s", qstring->name));
-	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
-	pTcon = cifs_sb->tcon;
 
 	qstring->hash = full_name_hash(qstring->name, qstring->len);
 	tmp_dentry = d_lookup(file->f_path.dentry, qstring);
 	if (tmp_dentry) {
+		/* BB: overwrite old name? i.e. tmp_dentry->d_name and
+		 * tmp_dentry->d_name.len??
+		 */
 		cFYI(0, ("existing dentry with inode 0x%p",
 			 tmp_dentry->d_inode));
 		*ptmp_inode = tmp_dentry->d_inode;
-/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
 		if (*ptmp_inode == NULL) {
-			*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
+			*ptmp_inode = cifs_new_inode(sb, inum);
 			if (*ptmp_inode == NULL)
 				return rc;
 			rc = 1;
 		}
-		if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
-			(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
 	} else {
 		tmp_dentry = d_alloc(file->f_path.dentry, qstring);
 		if (tmp_dentry == NULL) {
@@ -93,15 +92,14 @@ static int construct_dentry(struct qstr *qstring, struct file *file,
 			return rc;
 		}
 
-		*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
-		if (pTcon->nocase)
+		if (CIFS_SB(sb)->tcon->nocase)
 			tmp_dentry->d_op = &cifs_ci_dentry_ops;
 		else
 			tmp_dentry->d_op = &cifs_dentry_ops;
+
+		*ptmp_inode = cifs_new_inode(sb, inum);
 		if (*ptmp_inode == NULL)
 			return rc;
-		if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
-			(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
 		rc = 2;
 	}
 
@@ -822,7 +820,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
 /* inode num, inode type and filename returned */
 static int cifs_get_name_from_search_buf(struct qstr *pqst,
 	char *current_entry, __u16 level, unsigned int unicode,
-	struct cifs_sb_info *cifs_sb, int max_len, ino_t *pinum)
+	struct cifs_sb_info *cifs_sb, int max_len, __u64 *pinum)
 {
 	int rc = 0;
 	unsigned int len = 0;
@@ -842,9 +840,7 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
 			len = strnlen(filename, PATH_MAX);
 		}
 
-		/* BB fixme - hash low and high 32 bits if not 64 bit arch BB */
-		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
-			*pinum = pFindData->UniqueId;
+		*pinum = pFindData->UniqueId;
 	} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
 		FILE_DIRECTORY_INFO *pFindData =
 			(FILE_DIRECTORY_INFO *)current_entry;
@@ -907,7 +903,7 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
 	struct qstr qstring;
 	struct cifsFileInfo *pCifsF;
 	unsigned int obj_type;
-	ino_t  inum;
+	__u64  inum;
 	struct cifs_sb_info *cifs_sb;
 	struct inode *tmp_inode;
 	struct dentry *tmp_dentry;
@@ -940,20 +936,18 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
 	if (rc)
 		return rc;
 
-	rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry);
+	/* only these two infolevels return valid inode numbers */
+	if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX ||
+	    pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO)
+		rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
+					&inum);
+	else
+		rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
+					NULL);
+
 	if ((tmp_inode == NULL) || (tmp_dentry == NULL))
 		return -ENOMEM;
 
-	if (rc) {
-		/* inode created, we need to hash it with right inode number */
-		if (inum != 0) {
-			/* BB fixme - hash the 2 32 quantities bits together if
-			 *  necessary BB */
-			tmp_inode->i_ino = inum;
-		}
-		insert_inode_hash(tmp_inode);
-	}
-
 	/* we pass in rc below, indicating whether it is a new inode,
 	   so we can figure out whether to invalidate the inode cached
 	   data if the file has changed */
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 5f22de7b79a..5c68b4282be 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -34,15 +34,99 @@
 extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
 			 unsigned char *p24);
 
+/* Checks if this is the first smb session to be reconnected after
+   the socket has been reestablished (so we know whether to use vc 0).
+   Called while holding the cifs_tcp_ses_lock, so do not block */
+static bool is_first_ses_reconnect(struct cifsSesInfo *ses)
+{
+	struct list_head *tmp;
+	struct cifsSesInfo *tmp_ses;
+
+	list_for_each(tmp, &ses->server->smb_ses_list) {
+		tmp_ses = list_entry(tmp, struct cifsSesInfo,
+				     smb_ses_list);
+		if (tmp_ses->need_reconnect == false)
+			return false;
+	}
+	/* could not find a session that was already connected,
+	   this must be the first one we are reconnecting */
+	return true;
+}
+
+/*
+ *	vc number 0 is treated specially by some servers, and should be the
+ *      first one we request.  After that we can use vcnumbers up to maxvcs,
+ *	one for each smb session (some Windows versions set maxvcs incorrectly
+ *	so maxvc=1 can be ignored).  If we have too many vcs, we can reuse
+ *	any vc but zero (some servers reset the connection on vcnum zero)
+ *
+ */
+static __le16 get_next_vcnum(struct cifsSesInfo *ses)
+{
+	__u16 vcnum = 0;
+	struct list_head *tmp;
+	struct cifsSesInfo *tmp_ses;
+	__u16 max_vcs = ses->server->max_vcs;
+	__u16 i;
+	int free_vc_found = 0;
+
+	/* Quoting the MS-SMB specification: "Windows-based SMB servers set this
+	field to one but do not enforce this limit, which allows an SMB client
+	to establish more virtual circuits than allowed by this value ... but
+	other server implementations can enforce this limit." */
+	if (max_vcs < 2)
+		max_vcs = 0xFFFF;
+
+	write_lock(&cifs_tcp_ses_lock);
+	if ((ses->need_reconnect) && is_first_ses_reconnect(ses))
+			goto get_vc_num_exit;  /* vcnum will be zero */
+	for (i = ses->server->srv_count - 1; i < max_vcs; i++) {
+		if (i == 0) /* this is the only connection, use vc 0 */
+			break;
+
+		free_vc_found = 1;
+
+		list_for_each(tmp, &ses->server->smb_ses_list) {
+			tmp_ses = list_entry(tmp, struct cifsSesInfo,
+					     smb_ses_list);
+			if (tmp_ses->vcnum == i) {
+				free_vc_found = 0;
+				break; /* found duplicate, try next vcnum */
+			}
+		}
+		if (free_vc_found)
+			break; /* we found a vcnumber that will work - use it */
+	}
+
+	if (i == 0)
+		vcnum = 0; /* for most common case, ie if one smb session, use
+			      vc zero.  Also for case when no free vcnum, zero
+			      is safest to send (some clients only send zero) */
+	else if (free_vc_found == 0)
+		vcnum = 1;  /* we can not reuse vc=0 safely, since some servers
+				reset all uids on that, but 1 is ok. */
+	else
+		vcnum = i;
+	ses->vcnum = vcnum;
+get_vc_num_exit:
+	write_unlock(&cifs_tcp_ses_lock);
+
+	return le16_to_cpu(vcnum);
+}
+
 static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
 {
 	__u32 capabilities = 0;
 
 	/* init fields common to all four types of SessSetup */
-	/* note that header is initialized to zero in header_assemble */
+	/* Note that offsets for first seven fields in req struct are same  */
+	/*	in CIFS Specs so does not matter which of 3 forms of struct */
+	/*	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.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
+	pSMB->req.VcNumber = get_next_vcnum(ses);
 
 	/* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
 
@@ -71,7 +155,6 @@ static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
 	if (ses->capabilities & CAP_UNIX)
 		capabilities |= CAP_UNIX;
 
-	/* BB check whether to init vcnum BB */
 	return capabilities;
 }
 
@@ -228,7 +311,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft,
 
 	kfree(ses->serverOS);
 	/* UTF-8 string will not grow more than four times as big as UCS-16 */
-	ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
+	ses->serverOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL);
 	if (ses->serverOS != NULL)
 		cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
 	data += 2 * (len + 1);
@@ -241,7 +324,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft,
 		return rc;
 
 	kfree(ses->serverNOS);
-	ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
+	ses->serverNOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL);
 	if (ses->serverNOS != NULL) {
 		cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
 				   nls_cp);
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 7ebe6599ed3..0ad3e2d116a 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -154,81 +154,8 @@ void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
 	spin_unlock(&GlobalMid_Lock);
 }
 
-int
-smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
-	 unsigned int smb_buf_length, struct sockaddr *sin, bool noblocksnd)
-{
-	int rc = 0;
-	int i = 0;
-	struct msghdr smb_msg;
-	struct kvec iov;
-	unsigned len = smb_buf_length + 4;
-
-	if (ssocket == NULL)
-		return -ENOTSOCK; /* BB eventually add reconnect code here */
-	iov.iov_base = smb_buffer;
-	iov.iov_len = len;
-
-	smb_msg.msg_name = sin;
-	smb_msg.msg_namelen = sizeof(struct sockaddr);
-	smb_msg.msg_control = NULL;
-	smb_msg.msg_controllen = 0;
-	if (noblocksnd)
-		smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
-	else
-		smb_msg.msg_flags = MSG_NOSIGNAL;
-
-	/* smb header is converted in header_assemble. bcc and rest of SMB word
-	   area, and byte area if necessary, is converted to littleendian in
-	   cifssmb.c and RFC1001 len is converted to bigendian in smb_send
-	   Flags2 is converted in SendReceive */
-
-	smb_buffer->smb_buf_length = cpu_to_be32(smb_buffer->smb_buf_length);
-	cFYI(1, ("Sending smb of length %d", smb_buf_length));
-	dump_smb(smb_buffer, len);
-
-	while (len > 0) {
-		rc = kernel_sendmsg(ssocket, &smb_msg, &iov, 1, len);
-		if ((rc == -ENOSPC) || (rc == -EAGAIN)) {
-			i++;
-		/* smaller timeout here than send2 since smaller size */
-		/* Although it may not be required, this also is smaller
-		   oplock break time */
-			if (i > 12) {
-				cERROR(1,
-				   ("sends on sock %p stuck for 7 seconds",
-				    ssocket));
-				rc = -EAGAIN;
-				break;
-			}
-			msleep(1 << i);
-			continue;
-		}
-		if (rc < 0)
-			break;
-		else
-			i = 0; /* reset i after each successful send */
-		iov.iov_base += rc;
-		iov.iov_len -= rc;
-		len -= rc;
-	}
-
-	if (rc < 0) {
-		cERROR(1, ("Error %d sending data on socket to server", rc));
-	} else {
-		rc = 0;
-	}
-
-	/* Don't want to modify the buffer as a
-	   side effect of this call. */
-	smb_buffer->smb_buf_length = smb_buf_length;
-
-	return rc;
-}
-
 static int
-smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
-	  struct sockaddr *sin, bool noblocksnd)
+smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
 {
 	int rc = 0;
 	int i = 0;
@@ -243,11 +170,11 @@ smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
 	if (ssocket == NULL)
 		return -ENOTSOCK; /* BB eventually add reconnect code here */
 
-	smb_msg.msg_name = sin;
+	smb_msg.msg_name = (struct sockaddr *) &server->addr.sockAddr;
 	smb_msg.msg_namelen = sizeof(struct sockaddr);
 	smb_msg.msg_control = NULL;
 	smb_msg.msg_controllen = 0;
-	if (noblocksnd)
+	if (server->noblocksnd)
 		smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
 	else
 		smb_msg.msg_flags = MSG_NOSIGNAL;
@@ -272,7 +199,25 @@ smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
 				    n_vec - first_vec, total_len);
 		if ((rc == -ENOSPC) || (rc == -EAGAIN)) {
 			i++;
-			if (i >= 14) {
+			/* if blocking send we try 3 times, since each can block
+			   for 5 seconds. For nonblocking  we have to try more
+			   but wait increasing amounts of time allowing time for
+			   socket to clear.  The overall time we wait in either
+			   case to send on the socket is about 15 seconds.
+			   Similarly we wait for 15 seconds for
+			   a response from the server in SendReceive[2]
+			   for the server to send a response back for
+			   most types of requests (except SMB Write
+			   past end of file which can be slow, and
+			   blocking lock operations). NFS waits slightly longer
+			   than CIFS, but this can make it take longer for
+			   nonresponsive servers to be detected and 15 seconds
+			   is more than enough time for modern networks to
+			   send a packet.  In most cases if we fail to send
+			   after the retries we will kill the socket and
+			   reconnect which may clear the network problem.
+			*/
+			if ((i >= 14) || (!server->noblocksnd && (i > 2))) {
 				cERROR(1,
 				   ("sends on sock %p stuck for 15 seconds",
 				    ssocket));
@@ -339,6 +284,18 @@ smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
 	return rc;
 }
 
+int
+smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer,
+	 unsigned int smb_buf_length)
+{
+	struct kvec iov;
+
+	iov.iov_base = smb_buffer;
+	iov.iov_len = smb_buf_length + 4;
+
+	return smb_sendv(server, &iov, 1);
+}
+
 static int wait_for_free_request(struct cifsSesInfo *ses, const int long_op)
 {
 	if (long_op == CIFS_ASYNC_OP) {
@@ -540,9 +497,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 #ifdef CONFIG_CIFS_STATS2
 	atomic_inc(&ses->server->inSend);
 #endif
-	rc = smb_send2(ses->server, iov, n_vec,
-		      (struct sockaddr *) &(ses->server->addr.sockAddr),
-		       ses->server->noblocksnd);
+	rc = smb_sendv(ses->server, iov, n_vec);
 #ifdef CONFIG_CIFS_STATS2
 	atomic_dec(&ses->server->inSend);
 	midQ->when_sent = jiffies;
@@ -736,9 +691,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
 #ifdef CONFIG_CIFS_STATS2
 	atomic_inc(&ses->server->inSend);
 #endif
-	rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
-		      (struct sockaddr *) &(ses->server->addr.sockAddr),
-		      ses->server->noblocksnd);
+	rc = smb_send(ses->server, in_buf, in_buf->smb_buf_length);
 #ifdef CONFIG_CIFS_STATS2
 	atomic_dec(&ses->server->inSend);
 	midQ->when_sent = jiffies;
@@ -879,9 +832,7 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
 		mutex_unlock(&ses->server->srv_mutex);
 		return rc;
 	}
-	rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
-	      (struct sockaddr *) &(ses->server->addr.sockAddr),
-	      ses->server->noblocksnd);
+	rc = smb_send(ses->server, in_buf, in_buf->smb_buf_length);
 	mutex_unlock(&ses->server->srv_mutex);
 	return rc;
 }
@@ -973,9 +924,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
 #ifdef CONFIG_CIFS_STATS2
 	atomic_inc(&ses->server->inSend);
 #endif
-	rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
-		      (struct sockaddr *) &(ses->server->addr.sockAddr),
-		      ses->server->noblocksnd);
+	rc = smb_send(ses->server, in_buf, in_buf->smb_buf_length);
 #ifdef CONFIG_CIFS_STATS2
 	atomic_dec(&ses->server->inSend);
 	midQ->when_sent = jiffies;