From 83451879ab213e152c6fe5c743f257ba58d7acd1 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Thu, 1 Dec 2005 17:12:59 -0800
Subject: [CIFS] Use fsuid (fsgid) more consistently instead of uid/gid in
 assembling smb requests when setuids and Linux protocol extensions enabled
 and in checking more matching sessions in multiuser mount mode.

Pointed out by Shaggy.

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/CHANGES  | 6 ++++++
 fs/cifs/cifsfs.h | 2 +-
 fs/cifs/dir.c    | 8 ++++----
 fs/cifs/inode.c  | 4 ++--
 fs/cifs/misc.c   | 8 ++++----
 5 files changed, 17 insertions(+), 11 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 943ef9b82244ef..8bef2f3a41302f 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,7 @@
+Version 1.40
+------------
+Use fsuid (fsgid) more consistently instead of uid (gid).
+
 Version 1.39
 ------------
 Defer close of a file handle slightly if pending writes depend on that handle
@@ -7,6 +11,8 @@ Fix SFU style symlinks and mknod needed for servers which do not support the
 CIFS Unix Extensions.  Fix setfacl/getfacl on bigendian. Timeout negative
 dentries so files that the client sees as deleted but that later get created
 on the server will be recognized.  Add client side permission check on setattr.
+Timeout stuck requests better (where server has never responded or sent corrupt
+responses)
 
 Version 1.38
 ------------
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 9ec40e0e54fc4e..821a8eb2255965 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -99,5 +99,5 @@ extern ssize_t	cifs_getxattr(struct dentry *, const char *, void *, size_t);
 extern ssize_t	cifs_listxattr(struct dentry *, char *, size_t);
 extern int cifs_ioctl (struct inode * inode, struct file * filep,
 		       unsigned int command, unsigned long arg);
-#define CIFS_VERSION   "1.39"
+#define CIFS_VERSION   "1.40"
 #endif				/* _CIFSFS_H */
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 32cc96cafa3eb0..fed55e3c53dfab 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., 2002,2003
+ *   Copyright (C) International Business Machines  Corp., 2002,2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -200,8 +200,8 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 			(oplock & CIFS_CREATE_ACTION))
 			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
 				CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode,
-					(__u64)current->euid,
-					(__u64)current->egid,
+					(__u64)current->fsuid,
+					(__u64)current->fsgid,
 					0 /* dev */,
 					cifs_sb->local_nls, 
 					cifs_sb->mnt_cifs_flags & 
@@ -325,7 +325,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
 	else if (pTcon->ses->capabilities & CAP_UNIX) {
 		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
 			rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path,
-				mode,(__u64)current->euid,(__u64)current->egid,
+				mode,(__u64)current->fsuid,(__u64)current->fsgid,
 				device_number, cifs_sb->local_nls,
 				cifs_sb->mnt_cifs_flags & 
 					CIFS_MOUNT_MAP_SPECIAL_CHR);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 411c1f7f84da60..d1e99575743650 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -750,8 +750,8 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
 				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
 						    mode,
-						    (__u64)current->euid,
-						    (__u64)current->egid,
+						    (__u64)current->fsuid,
+						    (__u64)current->fsgid,
 						    0 /* dev_t */,
 						    cifs_sb->local_nls,
 						    cifs_sb->mnt_cifs_flags &
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 94baf6c8ecbda8..9af37f864688fe 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/misc.c
  *
- *   Copyright (C) International Business Machines  Corp., 2002,2004
+ *   Copyright (C) International Business Machines  Corp., 2002,2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -348,12 +348,12 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
 		/*  BB Add support for establishing new tCon and SMB Session  */
 		/*      with userid/password pairs found on the smb session   */ 
 		/*	for other target tcp/ip addresses 		BB    */
-				if(current->uid != treeCon->ses->linux_uid) {
-					cFYI(1,("Multiuser mode and UID did not match tcon uid "));
+				if(current->fsuid != treeCon->ses->linux_uid) {
+					cFYI(1,("Multiuser mode and UID did not match tcon uid"));
 					read_lock(&GlobalSMBSeslock);
 					list_for_each(temp_item, &GlobalSMBSessionList) {
 						ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList);
-						if(ses->linux_uid == current->uid) {
+						if(ses->linux_uid == current->fsuid) {
 							if(ses->server == treeCon->ses->server) {
 								cFYI(1,("found matching uid substitute right smb_uid"));  
 								buffer->Uid = ses->Suid;
-- 
cgit 1.2.3-korg


From bf8206791750854bc6668266b694e8fe2cacb924 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Thu, 1 Dec 2005 22:32:42 -0800
Subject: [CIFS] Kerberos and CIFS ACL support part 1

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/README    | 12 +++++++++++-
 fs/cifs/cifsacl.h | 36 ++++++++++++++++++++++++++++++++++++
 fs/cifs/cifspdu.h |  2 +-
 fs/cifs/connect.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++-------
 4 files changed, 94 insertions(+), 9 deletions(-)
 create mode 100644 fs/cifs/cifsacl.h

(limited to 'fs')

diff --git a/fs/cifs/README b/fs/cifs/README
index e5d09a2fc7a5ec..b0070d1b149d6d 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -436,7 +436,17 @@ A partial list of the supported mount options follows:
 		SFU does).  In the future the bottom 9 bits of the mode
 		mode also will be emulated using queries of the security
 		descriptor (ACL).
-		
+sec		Security mode.  Allowed values are:
+			none	attempt to connection as a null user (no name)
+			krb5    Use Kerberos version 5 authentication
+			krb5i   Use Kerberos authentication and packet signing
+			ntlm    Use NTLM password hashing (default)
+			ntlmi   Use NTLM password hashing with signing (if
+				/proc/fs/cifs/PacketSigningEnabled on or if
+				server requires signing also can be the default) 
+			ntlmv2  Use NTLMv2 password hashing      
+			ntlmv2i Use NTLMv2 password hashing with packet signing
+
 The mount.cifs mount helper also accepts a few mount options before -o
 including:
 
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
new file mode 100644
index 00000000000000..4cfcdf2e63043b
--- /dev/null
+++ b/fs/cifs/cifsacl.h
@@ -0,0 +1,36 @@
+/*
+ *   fs/cifs/cifsacl.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2005
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published
+ *   by the Free Software Foundation; either version 2.1 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This library is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU Lesser General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Lesser General Public License
+ *   along with this library; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _CIFSACL_H
+#define _CIFSACL_H
+
+struct cifs_sid {
+	__u8 revision; /* revision level */
+	__u8 num_subauths;
+	__u8 authority[6];
+	__u8 sub_auth[4];
+	/* next sub_auth if any ... */
+} __attribute__((packed));
+
+/* everyone */
+const cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+/* group users */
+const cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 33e1859fd2f67c..5253e779b3aa2f 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/cifspdu.h
  *
- *   Copyright (c) International Business Machines  Corp., 2002
+ *   Copyright (c) International Business Machines  Corp., 2002,2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index c467de8576105b..651f3b6cebed3d 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -82,6 +82,12 @@ struct smb_vol {
 	unsigned remap:1;   /* set to remap seven reserved chars in filenames */
 	unsigned posix_paths:1;   /* unset to not ask for posix pathnames. */
 	unsigned sfu_emul:1;
+	unsigned krb5:1;
+	unsigned ntlm:1;
+	unsigned ntlmv2:1;
+	unsigned nullauth:1; /* attempt to authenticate with null user */
+	unsigned sign:1;
+	unsigned seal:1;     /* encrypt */
 	unsigned nocase;     /* request case insensitive filenames */
 	unsigned nobrl;      /* disable sending byte range locks to srv */
 	unsigned int rsize;
@@ -777,7 +783,7 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
 
 	/* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */
 	vol->rw = TRUE;
-
+	vol->ntlm = TRUE;
 	/* default is always to request posix paths. */
 	vol->posix_paths = 1;
 
@@ -903,6 +909,39 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
 				printk(KERN_WARNING "CIFS: ip address too long\n");
 				return 1;
 			}
+                } else if (strnicmp(data, "sec", 3) == 0) { 
+                        if (!value || !*value) {
+				cERROR(1,("no security value specified"));
+                                continue;
+                        } else if (strnicmp(value, "krb5i", 5) == 0) {
+				vol->sign = 1;
+				vol->krb5 = 1;
+			} else if (strnicmp(value, "krb5p", 5) == 0) {
+				/* vol->seal = 1; 
+				   vol->krb5 = 1; */
+				cERROR(1,("Krb5 cifs privacy not supported"));
+				return 1;
+			} else if (strnicmp(value, "krb5", 4) == 0) {
+				vol->krb5 = 1;
+			} else if (strnicmp(value, "ntlmv2i", 7) == 0) {
+				vol->ntlmv2 = 1;
+				vol->sign = 1;
+			} else if (strnicmp(value, "ntlmv2", 6) == 0) {
+				vol->ntlmv2 = 1;
+			} else if (strnicmp(value, "ntlmi", 5) == 0) {
+				vol->ntlm = 1;
+				vol->sign = 1;
+			} else if (strnicmp(value, "ntlm", 4) == 0) {
+				/* ntlm is default so can be turned off too */
+				vol->ntlm = 1;
+			} else if (strnicmp(value, "nontlm", 6) == 0) {
+				vol->ntlm = 0;
+			} else if (strnicmp(value, "none", 4) == 0) {
+				vol->nullauth = 1; 
+                        } else {
+                                cERROR(1,("bad security option: %s", value));
+                                return 1;
+                        }
 		} else if ((strnicmp(data, "unc", 3) == 0)
 			   || (strnicmp(data, "target", 6) == 0)
 			   || (strnicmp(data, "path", 4) == 0)) {
@@ -1546,7 +1585,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		cFYI(1, ("Username: %s ", volume_info.username));
 
 	} else {
-		cifserror("No username specified ");
+		cifserror("No username specified");
         /* In userspace mount helper we can get user name from alternate
            locations such as env variables and files on disk */
 		kfree(volume_info.UNC);
@@ -1587,7 +1626,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		return -EINVAL;
 	} else /* which servers DFS root would we conect to */ {
 		cERROR(1,
-		       ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified  "));
+		       ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified"));
 		kfree(volume_info.UNC);
 		kfree(volume_info.password);
 		FreeXid(xid);
@@ -1626,7 +1665,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 
 
 	if (srvTcp) {
-		cFYI(1, ("Existing tcp session with server found "));                
+		cFYI(1, ("Existing tcp session with server found"));                
 	} else {	/* create socket */
 		if(volume_info.port)
 			sin_server.sin_port = htons(volume_info.port);
@@ -1689,11 +1728,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 
 	if (existingCifsSes) {
 		pSesInfo = existingCifsSes;
-		cFYI(1, ("Existing smb sess found "));
+		cFYI(1, ("Existing smb sess found"));
 		kfree(volume_info.password);
 		/* volume_info.UNC freed at end of function */
 	} else if (!rc) {
-		cFYI(1, ("Existing smb sess not found "));
+		cFYI(1, ("Existing smb sess not found"));
 		pSesInfo = sesInfoAlloc();
 		if (pSesInfo == NULL)
 			rc = -ENOMEM;
@@ -1777,7 +1816,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		    find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
 			     volume_info.username);
 		if (tcon) {
-			cFYI(1, ("Found match on UNC path "));
+			cFYI(1, ("Found match on UNC path"));
 			/* we can have only one retry value for a connection
 			   to a share so for resources mounted more than once
 			   to the same server share the last value passed in 
-- 
cgit 1.2.3-korg


From 84afc29b185334f489975a003b128e1b15e24a54 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Fri, 2 Dec 2005 13:32:45 -0800
Subject: [CIFS] Readpages and readir performance improvements - eliminate
 extra memcpy.  Part 1

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/CHANGES       |  3 ++-
 fs/cifs/cifsencrypt.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 fs/cifs/cifsproto.h   |  6 +++---
 fs/cifs/cifssmb.c     |  5 +----
 fs/cifs/file.c        |  6 ------
 fs/cifs/transport.c   | 19 ++++++++++--------
 6 files changed, 71 insertions(+), 23 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 8bef2f3a41302f..1d2137561c557a 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,6 +1,7 @@
 Version 1.40
 ------------
-Use fsuid (fsgid) more consistently instead of uid (gid).
+Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
+of readpages by eliminating one extra memcpy.
 
 Version 1.39
 ------------
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index fe2bb7c4c9121c..a2c24858d40f94 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/cifsencrypt.c
  *
- *   Copyright (C) International Business Machines  Corp., 2003
+ *   Copyright (C) International Business Machines  Corp., 2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -82,6 +82,59 @@ int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct TCP_Server_Info * server,
 	return rc;
 }
 
+static int cifs_calc_signature2(const struct kvec * iov, int n_vec,
+				const char * key, char * signature)
+{
+        struct  MD5Context context;
+
+        if((iov == NULL) || (signature == NULL))
+                return -EINVAL;
+
+        MD5Init(&context);
+        MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+
+/*        MD5Update(&context,cifs_pdu->Protocol,cifs_pdu->smb_buf_length); */ /* BB FIXME BB */
+
+        MD5Final(signature,&context);
+
+	return -EOPNOTSUPP;
+/*        return 0; */
+}
+
+
+int cifs_sign_smb2(struct kvec * iov, int n_vec, struct TCP_Server_Info *server,
+		   __u32 * pexpected_response_sequence_number)
+{
+	int rc = 0;
+	char smb_signature[20];
+	struct smb_hdr * cifs_pdu = iov[0].iov_base;
+
+	if((cifs_pdu == NULL) || (server == NULL))
+		return -EINVAL;
+
+	if((cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) == 0)
+		return rc;
+
+        spin_lock(&GlobalMid_Lock);
+        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++;
+        spin_unlock(&GlobalMid_Lock);
+
+        rc = cifs_calc_signature2(iov, n_vec, server->mac_signing_key,
+				      smb_signature);
+        if(rc)
+                memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
+        else
+                memcpy(cifs_pdu->Signature.SecuritySignature, smb_signature, 8);
+
+        return rc;
+
+}
+
 int cifs_verify_signature(struct smb_hdr * cifs_pdu, const char * mac_key,
 	__u32 expected_sequence_number)
 {
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1b73f4f4c5ce6d..c058f8a45b2b9f 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -48,7 +48,7 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
 			struct smb_hdr * /* out */ ,
 			int * /* bytes returned */ , const int long_op);
 extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
-			struct kvec *, int /* nvec */,
+			struct kvec *, int /* nvec to send */, 
 			int * /* bytes returned */ , const int long_op);
 extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
 extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
@@ -237,12 +237,10 @@ extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 			const __u64 lseek, unsigned int *nbytes,
 			const char *buf, const char __user *ubuf, 
 			const int long_op);
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 			const int netfid, const unsigned int count,
 			const __u64 offset, unsigned int *nbytes, 
 			struct kvec *iov, const int nvec, const int long_op);
-#endif /* CONFIG_CIFS_EXPERIMENTAL */
 extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
 			const unsigned char *searchName, __u64 * inode_number,
 			const struct nls_table *nls_codepage, 
@@ -269,6 +267,8 @@ extern void tconInfoFree(struct cifsTconInfo *);
 extern int cifs_reconnect(struct TCP_Server_Info *server);
 
 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 *, const char * mac_key,
 	__u32 expected_sequence_number);
 extern int cifs_calculate_mac_key(char * key,const char * rn,const char * pass);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 6867e556d37e51..3565d3bf2e321e 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1155,7 +1155,6 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 	return rc;
 }
 
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 int
 CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 	     const int netfid, const unsigned int count,
@@ -1223,7 +1222,7 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 		*nbytes = le16_to_cpu(pSMBr->CountHigh);
 		*nbytes = (*nbytes) << 16;
 		*nbytes += le16_to_cpu(pSMBr->Count);
-	}
+	} 
 
 	cifs_small_buf_release(pSMB);
 
@@ -1234,8 +1233,6 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 }
 
 
-#endif /* CIFS_EXPERIMENTAL */
-
 int
 CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
 	    const __u16 smb_file_id, const __u64 len,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 14a1c72ced92e1..b67be3d8c019f4 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -870,7 +870,6 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
 				if (rc != 0)
 					break;
 			}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 			/* BB FIXME We can not sign across two buffers yet */
 			if((experimEnabled) && ((pTcon->ses->server->secMode & 
 			 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0)) {
@@ -889,7 +888,6 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
 						iov, 1, long_op);
 			} else
 			/* BB FIXME fixup indentation of line below */
-#endif			
 			rc = CIFSSMBWrite(xid, pTcon,
 				 open_file->netfid,
 				 min_t(const int, cifs_sb->wsize, 
@@ -1026,7 +1024,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
 	return rc;
 }
 
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 static int cifs_writepages(struct address_space *mapping,
 			   struct writeback_control *wbc)
 {
@@ -1229,7 +1226,6 @@ retry:
 
 	return rc;
 }
-#endif
 
 static int cifs_writepage(struct page* page, struct writeback_control *wbc)
 {
@@ -1875,9 +1871,7 @@ struct address_space_operations cifs_addr_ops = {
 	.readpage = cifs_readpage,
 	.readpages = cifs_readpages,
 	.writepage = cifs_writepage,
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 	.writepages = cifs_writepages,
-#endif
 	.prepare_write = cifs_prepare_write,
 	.commit_write = cifs_commit_write,
 	.set_page_dirty = __set_page_dirty_nobuffers,
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index f8871196098c9a..0abfbf4e4a4987 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -206,7 +206,6 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
 	return rc;
 }
 
-#ifdef CONFIG_CIFS_EXPERIMENTAL
 static int
 smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
 	  struct sockaddr *sin)
@@ -392,8 +391,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 		return -ENOMEM;
 	}
 
-/* BB FIXME */
-/* 	rc = cifs_sign_smb2(iov, n_vec, ses->server, &midQ->sequence_number); */
+ 	rc = cifs_sign_smb2(iov, n_vec, ses->server, &midQ->sequence_number);
 
 	midQ->midState = MID_REQUEST_SUBMITTED;
 #ifdef CONFIG_CIFS_STATS2
@@ -492,11 +490,17 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 
 		if (midQ->resp_buf && 
 			(midQ->midState == MID_RESPONSE_RECEIVED)) {
+
 			in_buf->smb_buf_length = receive_len;
-			/* BB verify that length would not overrun small buf */
-			memcpy((char *)in_buf + 4,
-			       (char *)midQ->resp_buf + 4,
-			       receive_len);
+			if(receive_len > 500) {
+				/* use multiple buffers on way out */
+			} else { 
+				memcpy((char *)in_buf + 4,
+					(char *)midQ->resp_buf + 4,
+					receive_len);
+				iov[0].iov_len = receive_len + 4;
+				iov[1].iov_len = 0;
+			}
 
 			dump_smb(in_buf, 80);
 			/* convert the length into a more usable form */
@@ -549,7 +553,6 @@ out_unlock2:
 
 	return rc;
 }
-#endif /* CIFS_EXPERIMENTAL */
 
 int
 SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
-- 
cgit 1.2.3-korg


From 4498eed50a114565debd38f173acd62cce6e7cb8 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Sat, 3 Dec 2005 13:58:57 -0800
Subject: [CIFS] Add extended stats (STATS2) for total buffer allocations for
 better performance debugging.

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifs_debug.c | 4 ++++
 fs/cifs/cifsfs.c     | 6 ++++++
 fs/cifs/cifsglob.h   | 8 ++++++--
 fs/cifs/misc.c       | 7 +++++++
 4 files changed, 23 insertions(+), 2 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 22a444a3fe4c2f..7f19f2547d01ae 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -219,6 +219,10 @@ cifs_stats_write(struct file *file, const char __user *buffer,
 
         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 		read_lock(&GlobalSMBSeslock);
+#ifdef CONFIG_CIFS_STATS2
+		atomic_set(&totBufAllocCount, 0);
+		atomic_set(&totSmBufAllocCount, 0);
+#endif /* CONFIG_CIFS_STATS2 */
 		list_for_each(tmp, &GlobalTreeConnectionList) {
 			tcon = list_entry(tmp, struct cifsTconInfo,
 					cifsConnectionList);
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 2a13a2bac8f18f..ba90903909a616 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -954,6 +954,12 @@ init_cifs(void)
 	atomic_set(&tconInfoReconnectCount, 0);
 
 	atomic_set(&bufAllocCount, 0);
+	atomic_set(&smBufAllocCount, 0);
+#ifdef CONFIG_CIFS_STATS2
+	atomic_set(&totBufAllocCount, 0);
+	atomic_set(&totSmBufAllocCount, 0);
+#endif /* CONFIG_CIFS_STATS2 */
+
 	atomic_set(&midCount, 0);
 	GlobalCurrentXid = 0;
 	GlobalTotalActiveXid = 0;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 1ba08f8c5bc4aa..c011c278af4c1b 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -505,8 +505,12 @@ GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
 GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
 
 /* Various Debug counters to remove someday (BB) */
-GLOBAL_EXTERN atomic_t bufAllocCount;
-GLOBAL_EXTERN atomic_t smBufAllocCount;      
+GLOBAL_EXTERN atomic_t bufAllocCount;    /* current number allocated  */
+#ifdef CONFIG_CIFS_STATS2
+GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
+GLOBAL_EXTERN atomic_t totSmBufAllocCount;
+#endif
+GLOBAL_EXTERN atomic_t smBufAllocCount;
 GLOBAL_EXTERN atomic_t midCount;
 
 /* Misc globals */
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 9af37f864688fe..ac5a72a299a39c 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -161,6 +161,9 @@ cifs_buf_get(void)
 	if (ret_buf) {
 		memset(ret_buf, 0, sizeof(struct smb_hdr) + 3);
 		atomic_inc(&bufAllocCount);
+#ifdef CONFIG_CIFS_STATS2
+		atomic_inc(&totBufAllocCount);
+#endif /* CONFIG_CIFS_STATS2 */
 	}
 
 	return ret_buf;
@@ -195,6 +198,10 @@ cifs_small_buf_get(void)
 	/* No need to clear memory here, cleared in header assemble */
 	/*	memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/
 		atomic_inc(&smBufAllocCount);
+#ifdef CONFIG_CIFS_STATS2
+		atomic_inc(&totSmBufAllocCount);
+#endif /* CONFIG_CIFS_STATS2 */
+
 	}
 	return ret_buf;
 }
-- 
cgit 1.2.3-korg


From 07475ffba5800c53573180dd521273642adcd0e9 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Sat, 3 Dec 2005 14:11:37 -0800
Subject: [CIFS] Display large/small total buffer allocations in
 /proc/fs/cifs/Stats when CONFIG_CIFS_STATS2 is on (helps in debugging
 performance)

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifs_debug.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'fs')

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 7f19f2547d01ae..6f5d81f5eacb2e 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -280,6 +280,14 @@ cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 			smBufAllocCount.counter,cifs_min_small);
 	length += item_length;
 	buf += item_length;
+#ifdef CONFIG_CIFS_STATS2
+        item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
+				atomic_read(&totBufAllocCount),
+		                atomic_read(&totSmBufAllocCount));
+	length += item_length;
+	buf += item_length;
+#endif /* CONFIG_CIFS_STATS2 */
+
 	item_length = 
 		sprintf(buf,"Operations (MIDs): %d\n",
 			midCount.counter);
-- 
cgit 1.2.3-korg


From ec637e3ffb6b978143652477c7c5f96c9519b691 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Mon, 12 Dec 2005 20:53:18 -0800
Subject: [CIFS] Avoid extra large buffer allocation (and memcpy) in
 cifs_readpages

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifs_debug.c | 39 +++++++++++-----------
 fs/cifs/cifsfs.c     |  5 +--
 fs/cifs/cifsglob.h   |  8 ++++-
 fs/cifs/cifspdu.h    |  6 +++-
 fs/cifs/cifsproto.h  | 14 ++++----
 fs/cifs/cifssmb.c    | 93 ++++++++++++++++++++++++++++++++--------------------
 fs/cifs/connect.c    |  2 +-
 fs/cifs/file.c       | 52 ++++++++++++++++++-----------
 fs/cifs/inode.c      |  5 +--
 fs/cifs/misc.c       |  2 +-
 fs/cifs/transport.c  | 38 ++++++++++-----------
 11 files changed, 156 insertions(+), 108 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 6f5d81f5eacb2e..f4124a32bef897 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -401,8 +401,8 @@ static read_proc_t ntlmv2_enabled_read;
 static write_proc_t ntlmv2_enabled_write;
 static read_proc_t packet_signing_enabled_read;
 static write_proc_t packet_signing_enabled_write;
-static read_proc_t quotaEnabled_read;
-static write_proc_t quotaEnabled_write;
+static read_proc_t experimEnabled_read;
+static write_proc_t experimEnabled_write;
 static read_proc_t linuxExtensionsEnabled_read;
 static write_proc_t linuxExtensionsEnabled_write;
 
@@ -442,9 +442,9 @@ cifs_proc_init(void)
 		pde->write_proc = oplockEnabled_write;
 
 	pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
-				quotaEnabled_read, NULL);
+				experimEnabled_read, NULL);
 	if (pde)
-		pde->write_proc = quotaEnabled_write;
+		pde->write_proc = experimEnabled_write;
 
 	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 				linuxExtensionsEnabled_read, NULL);
@@ -586,14 +586,13 @@ oplockEnabled_write(struct file *file, const char __user *buffer,
 }
 
 static int
-quotaEnabled_read(char *page, char **start, off_t off,
+experimEnabled_read(char *page, char **start, off_t off,
                    int count, int *eof, void *data)
 {
         int len;
 
         len = sprintf(page, "%d\n", experimEnabled);
-/* could also check if quotas are enabled in kernel
-	as a whole first */
+
         len -= off;
         *start = page + off;
 
@@ -608,21 +607,23 @@ quotaEnabled_read(char *page, char **start, off_t off,
         return len;
 }
 static int
-quotaEnabled_write(struct file *file, const char __user *buffer,
+experimEnabled_write(struct file *file, const char __user *buffer,
                     unsigned long count, void *data)
 {
-        char c;
-        int rc;
+	char c;
+	int rc;
 
-        rc = get_user(c, buffer);
-        if (rc)
-                return rc;
-        if (c == '0' || c == 'n' || c == 'N')
-                experimEnabled = 0;
-        else if (c == '1' || c == 'y' || c == 'Y')
-                experimEnabled = 1;
+	rc = get_user(c, buffer);
+	if (rc)
+		return rc;
+	if (c == '0' || c == 'n' || c == 'N')
+		experimEnabled = 0;
+	else if (c == '1' || c == 'y' || c == 'Y')
+		experimEnabled = 1;
+	else if (c == '2')
+		experimEnabled = 2;
 
-        return count;
+	return count;
 }
 
 static int
@@ -632,8 +633,6 @@ linuxExtensionsEnabled_read(char *page, char **start, off_t off,
         int len;
 
         len = sprintf(page, "%d\n", linuxExtEnabled);
-/* could also check if quotas are enabled in kernel
-	as a whole first */
         len -= off;
         *start = page + off;
 
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ba90903909a616..582d66ca6da5d4 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -733,7 +733,7 @@ cifs_init_request_bufs(void)
 		kmem_cache_destroy(cifs_req_cachep);
 		return -ENOMEM;
 	}
-	/* 256 (MAX_CIFS_HDR_SIZE bytes is enough for most SMB responses and
+	/* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and
 	almost all handle based requests (but not write response, nor is it
 	sufficient for path based requests).  A smaller size would have
 	been more efficient (compacting multiple slab items on one 4k page) 
@@ -742,7 +742,8 @@ cifs_init_request_bufs(void)
 	efficient to alloc 1 per page off the slab compared to 17K (5page) 
 	alloc of large cifs buffers even when page debugging is on */
 	cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq",
-			MAX_CIFS_HDR_SIZE, 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
+			MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, 
+			NULL, NULL);
 	if (cifs_sm_req_cachep == NULL) {
 		mempool_destroy(cifs_req_poolp);
 		kmem_cache_destroy(cifs_req_cachep);
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c011c278af4c1b..862e403ff211ad 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -285,6 +285,7 @@ struct cifs_search_info {
 	unsigned endOfSearch:1;
 	unsigned emptyDir:1;
 	unsigned unicode:1;
+	unsigned smallBuf:1; /* so we know which buf_release function to call */
 };
 
 struct cifsFileInfo {
@@ -420,7 +421,12 @@ struct dir_notify_req {
 #define   MID_RESPONSE_RECEIVED 4
 #define   MID_RETRY_NEEDED      8 /* session closed while this request out */
 #define   MID_NO_RESP_NEEDED 0x10
-#define   MID_SMALL_BUFFER   0x20 /* 112 byte response buffer instead of 4K */
+
+/* Types of response buffer returned from SendReceive2 */
+#define   CIFS_NO_BUFFER        0    /* Response buffer not returned */
+#define   CIFS_SMALL_BUFFER     1
+#define   CIFS_LARGE_BUFFER     2
+#define   CIFS_IOVEC            4    /* array of response buffers */
 
 /*
  *****************************************************************
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 5253e779b3aa2f..3c09fb9cc56974 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -80,7 +80,11 @@
 #define NT_TRANSACT_GET_USER_QUOTA    0x07
 #define NT_TRANSACT_SET_USER_QUOTA    0x08
 
-#define MAX_CIFS_HDR_SIZE 256	/* is future chained NTCreateXReadX bigger? */
+#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
+/* future chained NTCreateXReadX bigger, but for time being NTCreateX biggest */
+/* among the requests (NTCreateX response is bigger with wct of 34) */
+#define MAX_CIFS_HDR_SIZE 0x58 /* 4 len + 32 hdr + (2*24 wct) + 2 bct + 2 pad */
+#define CIFS_SMALL_PATH 120 /* allows for (448-88)/3 */
 
 /* internal cifs vfs structures */
 /*****************************************************************
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index c058f8a45b2b9f..8ef0ce47f5b6d7 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -49,7 +49,7 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
 			int * /* bytes returned */ , const int long_op);
 extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
 			struct kvec *, int /* nvec to send */, 
-			int * /* bytes returned */ , const int long_op);
+			int * /* type of buf returned */ , const int long_op);
 extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
 extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
 extern int is_valid_oplock_break(struct smb_hdr *smb);
@@ -93,11 +93,12 @@ extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 			const struct nls_table *);
 
 extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
-            const char *searchName, const struct nls_table *nls_codepage,
-            __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map, const char dirsep);
+		const char *searchName, const struct nls_table *nls_codepage,
+		__u16 *searchHandle, struct cifs_search_info * psrch_inf, 
+		int map, const char dirsep);
 
 extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
-            __u16 searchHandle, struct cifs_search_info * psrch_inf);
+		__u16 searchHandle, struct cifs_search_info * psrch_inf);
 
 extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
 			const __u16 search_handle);
@@ -230,8 +231,9 @@ extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
 			const int smb_file_id);
 
 extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
-			const int netfid, unsigned int count,
-			const __u64 lseek, unsigned int *nbytes, char **buf);
+                        const int netfid, unsigned int count,
+                        const __u64 lseek, unsigned int *nbytes, char **buf,
+			int * return_buf_type);
 extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 			const int netfid, const unsigned int count,
 			const __u64 lseek, unsigned int *nbytes,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 3565d3bf2e321e..1620991cd4d280 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -958,21 +958,19 @@ openRetry:
 	return rc;
 }
 
-/* If no buffer passed in, then caller wants to do the copy
-	as in the case of readpages so the SMB buffer must be
-	freed by the caller */
-
 int
 CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
-	    const int netfid, const unsigned int count,
-	    const __u64 lseek, unsigned int *nbytes, char **buf)
+            const int netfid, const unsigned int count,
+            const __u64 lseek, unsigned int *nbytes, char **buf,
+	    int * pbuf_type)
 {
 	int rc = -EACCES;
 	READ_REQ *pSMB = NULL;
 	READ_RSP *pSMBr = NULL;
 	char *pReadData = NULL;
-	int bytes_returned;
 	int wct;
+	int resp_buf_type = 0;
+	struct kvec iov[1];
 
 	cFYI(1,("Reading %d bytes on fid %d",count,netfid));
 	if(tcon->ses->capabilities & CAP_LARGE_FILES)
@@ -981,8 +979,7 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
 		wct = 10; /* old style read */
 
 	*nbytes = 0;
-	rc = smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB,
-		      (void **) &pSMBr);
+	rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
 	if (rc)
 		return rc;
 
@@ -990,13 +987,13 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
 	if (tcon->ses->server == NULL)
 		return -ECONNABORTED;
 
-	pSMB->AndXCommand = 0xFF;	/* none */
+	pSMB->AndXCommand = 0xFF;       /* none */
 	pSMB->Fid = netfid;
 	pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
 	if(wct == 12)
 		pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
-        else if((lseek >> 32) > 0) /* can not handle this big offset for old */
-                return -EIO;
+	else if((lseek >> 32) > 0) /* can not handle this big offset for old */
+		return -EIO;
 
 	pSMB->Remaining = 0;
 	pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
@@ -1005,14 +1002,18 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
 		pSMB->ByteCount = 0;  /* no need to do le conversion since 0 */
 	else {
 		/* old style read */
-		struct smb_com_readx_req * pSMBW = 
+		struct smb_com_readx_req * pSMBW =
 			(struct smb_com_readx_req *)pSMB;
-		pSMBW->ByteCount = 0;	
+		pSMBW->ByteCount = 0;
 	}
-	
-	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
-			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+
+	iov[0].iov_base = (char *)pSMB;
+	iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
+	rc = SendReceive2(xid, tcon->ses, iov, 
+			  1 /* num iovecs */,
+			  &resp_buf_type, 0); 
 	cifs_stats_inc(&tcon->num_reads);
+	pSMBr = (READ_RSP *)iov[0].iov_base;
 	if (rc) {
 		cERROR(1, ("Send error in read = %d", rc));
 	} else {
@@ -1022,33 +1023,43 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
 		*nbytes = data_length;
 
 		/*check that DataLength would not go beyond end of SMB */
-		if ((data_length > CIFSMaxBufSize) 
+		if ((data_length > CIFSMaxBufSize)
 				|| (data_length > count)) {
 			cFYI(1,("bad length %d for count %d",data_length,count));
 			rc = -EIO;
 			*nbytes = 0;
 		} else {
-			pReadData =
-			    (char *) (&pSMBr->hdr.Protocol) +
+			pReadData = (char *) (&pSMBr->hdr.Protocol) +
 			    le16_to_cpu(pSMBr->DataOffset);
-/*			if(rc = copy_to_user(buf, pReadData, data_length)) {
-				cERROR(1,("Faulting on read rc = %d",rc));
-				rc = -EFAULT;
-			}*/ /* can not use copy_to_user when using page cache*/
+/*                      if(rc = copy_to_user(buf, pReadData, data_length)) {
+                                cERROR(1,("Faulting on read rc = %d",rc));
+                                rc = -EFAULT;
+                        }*/ /* can not use copy_to_user when using page cache*/
 			if(*buf)
-			    memcpy(*buf,pReadData,data_length);
+				memcpy(*buf,pReadData,data_length);
 		}
 	}
-	if(*buf)
-		cifs_buf_release(pSMB);
-	else
-		*buf = (char *)pSMB;
 
-	/* Note: On -EAGAIN error only caller can retry on handle based calls 
+	cifs_small_buf_release(pSMB);
+	if(*buf) {
+		if(resp_buf_type == CIFS_SMALL_BUFFER)
+			cifs_small_buf_release(iov[0].iov_base);
+		else if(resp_buf_type == CIFS_LARGE_BUFFER)
+			cifs_buf_release(iov[0].iov_base);
+	} else /* return buffer to caller to free */ /* BB FIXME how do we tell caller if it is not a large buffer */ {
+		*buf = iov[0].iov_base;
+		if(resp_buf_type == CIFS_SMALL_BUFFER)
+			*pbuf_type = CIFS_SMALL_BUFFER;
+		else if(resp_buf_type == CIFS_LARGE_BUFFER)
+			*pbuf_type = CIFS_LARGE_BUFFER;
+	}
+
+	/* Note: On -EAGAIN error only caller can retry on handle based calls
 		since file handle passed in no longer valid */
 	return rc;
 }
 
+
 int
 CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 	     const int netfid, const unsigned int count,
@@ -1163,10 +1174,10 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 {
 	int rc = -EACCES;
 	WRITE_REQ *pSMB = NULL;
-	int bytes_returned, wct;
+	int wct;
 	int smb_hdr_len;
+	int resp_buf_type = 0;
 
-	/* BB removeme BB */
 	cFYI(1,("write2 at %lld %d bytes", (long long)offset, count));
 
 	if(tcon->ses->capabilities & CAP_LARGE_FILES)
@@ -1209,22 +1220,34 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 		pSMBW->ByteCount = cpu_to_le16(count + 5);
 	}
 	iov[0].iov_base = pSMB;
-	iov[0].iov_len = smb_hdr_len + 4;
+	if(wct == 14)
+		iov[0].iov_len = smb_hdr_len + 4;
+	else /* wct == 12 pad bigger by four bytes */
+		iov[0].iov_len = smb_hdr_len + 8;
+	
 
-	rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &bytes_returned,
+	rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type,
 			  long_op);
 	cifs_stats_inc(&tcon->num_writes);
 	if (rc) {
 		cFYI(1, ("Send error Write2 = %d", rc));
 		*nbytes = 0;
+	} else if(resp_buf_type == 0) {
+		/* presumably this can not happen, but best to be safe */
+		rc = -EIO;
+		*nbytes = 0;
 	} else {
-		WRITE_RSP * pSMBr = (WRITE_RSP *)pSMB;
+		WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base;
 		*nbytes = le16_to_cpu(pSMBr->CountHigh);
 		*nbytes = (*nbytes) << 16;
 		*nbytes += le16_to_cpu(pSMBr->Count);
 	} 
 
 	cifs_small_buf_release(pSMB);
+	if(resp_buf_type == CIFS_SMALL_BUFFER)
+		cifs_small_buf_release(iov[0].iov_base);
+	else if(resp_buf_type == CIFS_LARGE_BUFFER)
+		cifs_buf_release(iov[0].iov_base);
 
 	/* Note: On -EAGAIN error only caller can retry on handle based calls 
 		since file handle passed in no longer valid */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 651f3b6cebed3d..45c9d726c0021b 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -514,7 +514,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
 		/* else length ok */
 		reconnect = 0;
 
-		if(pdu_length > MAX_CIFS_HDR_SIZE - 4) {
+		if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) {
 			isLargeBuf = TRUE;
 			memcpy(bigbuf, smallbuf, 4);
 			smb_buffer = bigbuf;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index b67be3d8c019f4..c249b628fd1c3c 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -555,13 +555,13 @@ int cifs_closedir(struct inode *inode, struct file *file)
 		}
 		ptmp = pCFileStruct->srch_inf.ntwrk_buf_start;
 		if (ptmp) {
-   /* BB removeme BB */	cFYI(1, ("freeing smb buf in srch struct in closedir"));
+			cFYI(1, ("closedir free smb buf in srch struct"));
 			pCFileStruct->srch_inf.ntwrk_buf_start = NULL;
 			cifs_buf_release(ptmp);
 		}
 		ptmp = pCFileStruct->search_resume_name;
 		if (ptmp) {
-   /* BB removeme BB */	cFYI(1, ("freeing resume name in closedir"));
+			cFYI(1, ("closedir free resume name"));
 			pCFileStruct->search_resume_name = NULL;
 			kfree(ptmp);
 		}
@@ -871,8 +871,8 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
 					break;
 			}
 			/* BB FIXME We can not sign across two buffers yet */
-			if((experimEnabled) && ((pTcon->ses->server->secMode & 
-			 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0)) {
+			if((pTcon->ses->server->secMode & 
+			 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0) {
 				struct kvec iov[2];
 				unsigned int len;
 
@@ -1424,6 +1424,7 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data,
 		rc = -EAGAIN;
 		smb_read_data = NULL;
 		while (rc == -EAGAIN) {
+			int buf_type = CIFS_NO_BUFFER;
 			if ((open_file->invalidHandle) && 
 			    (!open_file->closePend)) {
 				rc = cifs_reopen_file(file->f_dentry->d_inode,
@@ -1432,20 +1433,22 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data,
 					break;
 			}
 			rc = CIFSSMBRead(xid, pTcon,
-					open_file->netfid,
-					current_read_size, *poffset,
-					&bytes_read, &smb_read_data);
+					 open_file->netfid,
+					 current_read_size, *poffset,
+					 &bytes_read, &smb_read_data,
+					 &buf_type);
 			pSMBr = (struct smb_com_read_rsp *)smb_read_data;
 			if (copy_to_user(current_offset, 
 					 smb_read_data + 4 /* RFC1001 hdr */
 					 + le16_to_cpu(pSMBr->DataOffset), 
 					 bytes_read)) {
 				rc = -EFAULT;
-				FreeXid(xid);
-				return rc;
-            }
+			}
 			if (smb_read_data) {
-				cifs_buf_release(smb_read_data);
+				if(buf_type == CIFS_SMALL_BUFFER)
+					cifs_small_buf_release(smb_read_data);
+				else if(buf_type == CIFS_LARGE_BUFFER)
+					cifs_buf_release(smb_read_data);
 				smb_read_data = NULL;
 			}
 		}
@@ -1478,6 +1481,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
 	int xid;
 	char *current_offset;
 	struct cifsFileInfo *open_file;
+	int buf_type = CIFS_NO_BUFFER;
 
 	xid = GetXid();
 	cifs_sb = CIFS_SB(file->f_dentry->d_sb);
@@ -1514,9 +1518,10 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
 					break;
 			}
 			rc = CIFSSMBRead(xid, pTcon,
-					open_file->netfid,
-					current_read_size, *poffset,
-					&bytes_read, &current_offset);
+					 open_file->netfid,
+					 current_read_size, *poffset,
+					 &bytes_read, &current_offset,
+					 &buf_type);
 		}
 		if (rc || (bytes_read == 0)) {
 			if (total_read) {
@@ -1614,6 +1619,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 	struct smb_com_read_rsp *pSMBr;
 	struct pagevec lru_pvec;
 	struct cifsFileInfo *open_file;
+	int buf_type = CIFS_NO_BUFFER;
 
 	xid = GetXid();
 	if (file->private_data == NULL) {
@@ -1670,14 +1676,17 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 			}
 
 			rc = CIFSSMBRead(xid, pTcon,
-					open_file->netfid,
-					read_size, offset,
-					&bytes_read, &smb_read_data);
-
+					 open_file->netfid,
+					 read_size, offset,
+					 &bytes_read, &smb_read_data,
+					 &buf_type);
 			/* BB more RC checks ? */
 			if (rc== -EAGAIN) {
 				if (smb_read_data) {
-					cifs_buf_release(smb_read_data);
+					if(buf_type == CIFS_SMALL_BUFFER)
+						cifs_small_buf_release(smb_read_data);
+					else if(buf_type == CIFS_LARGE_BUFFER)
+						cifs_buf_release(smb_read_data);
 					smb_read_data = NULL;
 				}
 			}
@@ -1734,7 +1743,10 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 			break;
 		}
 		if (smb_read_data) {
-			cifs_buf_release(smb_read_data);
+			if(buf_type == CIFS_SMALL_BUFFER)
+				cifs_small_buf_release(smb_read_data);
+			else if(buf_type == CIFS_LARGE_BUFFER)
+				cifs_buf_release(smb_read_data);
 			smb_read_data = NULL;
 		}
 		bytes_read = 0;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index d1e99575743650..f65310cc60a187 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -229,11 +229,12 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 			 cifs_sb->mnt_cifs_flags &
 				CIFS_MOUNT_MAP_SPECIAL_CHR);
 	if (rc==0) {
+		int buf_type = CIFS_NO_BUFFER;
 			/* Read header */
 		rc = CIFSSMBRead(xid, pTcon,
 			         netfid,
 				 24 /* length */, 0 /* offset */,
-				 &bytes_read, &pbuf);
+				 &bytes_read, &pbuf, &buf_type);
 		if((rc == 0) && (bytes_read >= 8)) {
 			if(memcmp("IntxBLK", pbuf, 8) == 0) {
 				cFYI(1,("Block device"));
@@ -267,7 +268,7 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 		} else {
 			inode->i_mode |= S_IFREG; /* then it is a file */
 			rc = -EOPNOTSUPP; /* or some unknown SFU type */	
-		}
+		}		
 		CIFSSMBClose(xid, pTcon, netfid);
 	}
 	return rc;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index ac5a72a299a39c..812c6bb0fe38ad 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -299,7 +299,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
 	struct cifsSesInfo * ses;
 	char *temp = (char *) buffer;
 
-	memset(temp,0,MAX_CIFS_HDR_SIZE);
+	memset(temp,0,256); /* bigger than MAX_CIFS_HDR_SIZE */
 
 	buffer->smb_buf_length =
 	    (2 * word_count) + sizeof (struct smb_hdr) -
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 0abfbf4e4a4987..c96a148c39b22f 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -298,7 +298,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
 
 int
 SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, 
-	     struct kvec *iov, int n_vec, int *pbytes_returned,
+	     struct kvec *iov, int n_vec, int * pRespBufType /* ret */, 
 	     const int long_op)
 {
 	int rc = 0;
@@ -306,6 +306,8 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 	unsigned long timeout;
 	struct mid_q_entry *midQ;
 	struct smb_hdr *in_buf = iov[0].iov_base;
+	
+	*pRespBufType = CIFS_NO_BUFFER;  /* no response buf yet */
 
 	if (ses == NULL) {
 		cERROR(1,("Null smb session"));
@@ -491,23 +493,20 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 		if (midQ->resp_buf && 
 			(midQ->midState == MID_RESPONSE_RECEIVED)) {
 
-			in_buf->smb_buf_length = receive_len;
-			if(receive_len > 500) {
-				/* use multiple buffers on way out */
-			} else { 
-				memcpy((char *)in_buf + 4,
-					(char *)midQ->resp_buf + 4,
-					receive_len);
-				iov[0].iov_len = receive_len + 4;
-				iov[1].iov_len = 0;
-			}
+			iov[0].iov_base = (char *)midQ->resp_buf;
+			if(midQ->largeBuf)
+				*pRespBufType = CIFS_LARGE_BUFFER;
+			else
+				*pRespBufType = CIFS_SMALL_BUFFER;
+			iov[0].iov_len = receive_len + 4;
+			iov[1].iov_len = 0;
 
-			dump_smb(in_buf, 80);
+			dump_smb(midQ->resp_buf, 80);
 			/* convert the length into a more usable form */
 			if((receive_len > 24) &&
 			   (ses->server->secMode & (SECMODE_SIGN_REQUIRED |
 					SECMODE_SIGN_ENABLED))) {
-				rc = cifs_verify_signature(in_buf,
+				rc = cifs_verify_signature(midQ->resp_buf,
 						ses->server->mac_signing_key,
 						midQ->sequence_number+1);
 				if(rc) {
@@ -516,18 +515,19 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 				}
 			}
 
-			*pbytes_returned = in_buf->smb_buf_length;
-
 			/* BB special case reconnect tid and uid here? */
 			/* BB special case Errbadpassword and pwdexpired here */
-			rc = map_smb_to_linux_error(in_buf);
+			rc = map_smb_to_linux_error(midQ->resp_buf);
 
 			/* convert ByteCount if necessary */
 			if (receive_len >=
 			    sizeof (struct smb_hdr) -
 			    4 /* do not count RFC1001 header */  +
-			    (2 * in_buf->WordCount) + 2 /* bcc */ )
-				BCC(in_buf) = le16_to_cpu(BCC_LE(in_buf));
+			    (2 * midQ->resp_buf->WordCount) + 2 /* bcc */ )
+				BCC(midQ->resp_buf) = 
+					le16_to_cpu(BCC_LE(midQ->resp_buf));
+			midQ->resp_buf = NULL;  /* mark it so will not be freed
+						by DeleteMidQEntry */
 		} else {
 			rc = -EIO;
 			cFYI(1,("Bad MID state?"));
@@ -793,7 +793,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
 				BCC(out_buf) = le16_to_cpu(BCC_LE(out_buf));
 		} else {
 			rc = -EIO;
-			cERROR(1,("Bad MID state? "));
+			cERROR(1,("Bad MID state?"));
 		}
 	}
 cifs_no_response_exit:
-- 
cgit 1.2.3-korg


From fdf7f2e91981938702ab2f58f44dc5685dd1bdc1 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Sat, 31 Dec 2005 10:29:42 -0800
Subject: [CIFS] Fix typos in rfc1002pdu.h

Pointed out by Leo Comitale

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/rfc1002pdu.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/rfc1002pdu.h b/fs/cifs/rfc1002pdu.h
index 9222033cad8ec3..aede606132aaa0 100644
--- a/fs/cifs/rfc1002pdu.h
+++ b/fs/cifs/rfc1002pdu.h
@@ -24,11 +24,11 @@
 /* NB: unlike smb/cifs packets, the RFC1002 structures are big endian */
 
 	/* RFC 1002 session packet types */
-#define RFC1002_SESSION_MESASAGE 0x00
+#define RFC1002_SESSION_MESSAGE 0x00
 #define RFC1002_SESSION_REQUEST  0x81
 #define RFC1002_POSITIVE_SESSION_RESPONSE 0x82
 #define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83
-#define RFC1002_RETARGET_SESSION_RESPONSE 0x83
+#define RFC1002_RETARGET_SESSION_RESPONSE 0x84
 #define RFC1002_SESSION_KEEP_ALIVE 0x85
 
 	/* RFC 1002 flags (only one defined */
-- 
cgit 1.2.3-korg


From a6230af7bdffcd3837cb9fbefc17aa6aaada486c Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Sun, 8 Jan 2006 20:04:55 -0800
Subject: [CIFS] Minor cleanup to new cifs acl header.

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifsacl.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'fs')

diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index 4cfcdf2e63043b..d152ff50ea8c39 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -34,3 +34,5 @@ struct cifs_sid {
 const cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
 /* group users */
 const cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+
+#endif /* _CIFSACL_H */
-- 
cgit 1.2.3-korg


From f3f6ec4b77f627a6427460d6f8884e1042eef134 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Sun, 8 Jan 2006 20:12:58 -0800
Subject: [CIFS] Fix cifs trying to write to f_ops

patch 2ea55c01e0c5dfead8699484b0bae2a375b1f61c fixed CIFS clobbering the
global fops structure for some per mount setting, by duplicating and having
2 fops structs. However the write to the fops was left behind, which is a
NOP in practice (due to the fact that we KNOW the fops has that field set
to NULL already due to the duplication). So remove it... In addition, another
instance of the same bug was forgotten in november.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/readdir.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 9bdaaecae36f68..288cc048d37f1e 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -214,8 +214,7 @@ static void fill_in_inode(struct inode *tmp_inode,
 			tmp_inode->i_fop = &cifs_file_nobrl_ops;
 		else
 			tmp_inode->i_fop = &cifs_file_ops;
-		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
-			tmp_inode->i_fop->lock = NULL;
+
 		tmp_inode->i_data.a_ops = &cifs_addr_ops;
 		if((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
 		   (cifs_sb->tcon->ses->server->maxBuf <
@@ -327,12 +326,18 @@ static void unix_fill_in_inode(struct inode *tmp_inode,
 	if (S_ISREG(tmp_inode->i_mode)) {
 		cFYI(1, ("File inode"));
 		tmp_inode->i_op = &cifs_file_inode_ops;
-		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
-			tmp_inode->i_fop = &cifs_file_direct_ops;
+
+		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
+			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+				tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
+			else
+				tmp_inode->i_fop = &cifs_file_direct_ops;
+		
+		} else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+			tmp_inode->i_fop = &cifs_file_nobrl_ops;
 		else
 			tmp_inode->i_fop = &cifs_file_ops;
-		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
-			tmp_inode->i_fop->lock = NULL;
+
 		tmp_inode->i_data.a_ops = &cifs_addr_ops;
 		if((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
 		   (cifs_sb->tcon->ses->server->maxBuf < 
-- 
cgit 1.2.3-korg


From c32a0b689cb9cc160cfcd19735bbf50bb70c6ef4 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Thu, 12 Jan 2006 14:41:28 -0800
Subject: [CIFS] Allow local filesize for file that is open for write to be
 updated from server when mount forcedirectio.

Allowing update of file size with non forcedirectio mounts should be
allowed in the fiture but requires carefully writing out the
last page in the local file if it is a partial page in order to
avoid corruption and careful serialization

Thanks to Maximiliano Curia who suggested similar changes and provided
a testcase.

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifsfs.c | 17 +++++++++++++++--
 fs/cifs/file.c   | 10 ++++++++++
 2 files changed, 25 insertions(+), 2 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 582d66ca6da5d4..136af8a08f45b8 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -513,6 +513,17 @@ static ssize_t cifs_file_aio_write(struct kiocb *iocb, const char __user *buf,
 	return written;
 }
 
+static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
+{
+	/* origin == SEEK_END => we must revalidate the cached file length */
+	if (origin == 2) {
+		int retval = cifs_revalidate(file->f_dentry);
+		if (retval < 0)
+			return (loff_t)retval;
+	}
+	return remote_llseek(file, offset, origin);
+}
+
 static struct file_system_type cifs_fs_type = {
 	.owner = THIS_MODULE,
 	.name = "cifs",
@@ -586,6 +597,7 @@ struct file_operations cifs_file_ops = {
 	.flush = cifs_flush,
 	.mmap  = cifs_file_mmap,
 	.sendfile = generic_file_sendfile,
+	.llseek = cifs_llseek,
 #ifdef CONFIG_CIFS_POSIX
 	.ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
@@ -609,7 +621,7 @@ struct file_operations cifs_file_direct_ops = {
 #ifdef CONFIG_CIFS_POSIX
 	.ioctl  = cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
-
+	.llseek = cifs_llseek,
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 	.dir_notify = cifs_dir_notify,
 #endif /* CONFIG_CIFS_EXPERIMENTAL */
@@ -627,6 +639,7 @@ struct file_operations cifs_file_nobrl_ops = {
 	.flush = cifs_flush,
 	.mmap  = cifs_file_mmap,
 	.sendfile = generic_file_sendfile,
+	.llseek = cifs_llseek,
 #ifdef CONFIG_CIFS_POSIX
 	.ioctl	= cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
@@ -649,7 +662,7 @@ struct file_operations cifs_file_direct_nobrl_ops = {
 #ifdef CONFIG_CIFS_POSIX
 	.ioctl  = cifs_ioctl,
 #endif /* CONFIG_CIFS_POSIX */
-
+	.llseek = cifs_llseek,
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 	.dir_notify = cifs_dir_notify,
 #endif /* CONFIG_CIFS_EXPERIMENTAL */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index c249b628fd1c3c..670ec1e84da081 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1835,10 +1835,20 @@ int is_size_safe_to_change(struct cifsInodeInfo *cifsInode)
 		open_file =  find_writable_file(cifsInode);
  
 	if(open_file) {
+		struct cifs_sb_info *cifs_sb;
+
 		/* there is not actually a write pending so let
 		this handle go free and allow it to
 		be closable if needed */
 		atomic_dec(&open_file->wrtPending);
+
+		cifs_sb = CIFS_SB(cifsInode->vfs_inode.i_sb);
+		if ( cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO ) {
+			/* since no page cache to corrupt on directio 
+			we can change size safely */
+			return 1;
+		}
+
 		return 0;
 	} else
 		return 1;
-- 
cgit 1.2.3-korg


From 0a4b92c05ed02ad7abdd165823eaf4bbcb33ae5c Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Thu, 12 Jan 2006 15:44:21 -0800
Subject: [CIFS] Add worker function for Get ACL cifs style

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/CHANGES      |   4 +-
 fs/cifs/cifs_fs_sb.h |   5 +-
 fs/cifs/cifsglob.h   |   2 +
 fs/cifs/cifspdu.h    |  89 +++++++++++++++++++++----
 fs/cifs/cifsproto.h  |   3 +
 fs/cifs/cifssmb.c    | 179 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 fs/cifs/connect.c    |   7 ++
 fs/cifs/transport.c  |   1 -
 fs/cifs/xattr.c      |  22 ++++++-
 9 files changed, 292 insertions(+), 20 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 1d2137561c557a..c7995c96f06994 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,7 +1,9 @@
 Version 1.40
 ------------
 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
-of readpages by eliminating one extra memcpy.
+of readpages by eliminating one extra memcpy. Allow update of file size
+from remote server even if file is open for write as long as mount is
+directio.
 
 Version 1.39
 ------------
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index f799f6f0e72969..ad58eb0c4d6d8d 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -24,9 +24,10 @@
 #define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */
 #define CIFS_MOUNT_NO_XATTR  0x10 /* if set - disable xattr support */
 #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
-#define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible. */
-#define CIFS_MOUNT_UNX_EMUL    0x80 /* Network compat with SFUnix emulation */
+#define CIFS_MOUNT_POSIX_PATHS	0x40 /* Negotiate posix pathnames if possible. */
+#define CIFS_MOUNT_UNX_EMUL	0x80 /* Network compat with SFUnix emulation */
 #define CIFS_MOUNT_NO_BRL	0x100 /* No sending byte range locks to srv */
+#define CIFS_MOUNT_CIFS_ACL	0x200 /* send ACL requests to non-POSIX srv */
 
 struct cifs_sb_info {
 	struct cifsTconInfo *tcon;	/* primary mount */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 862e403ff211ad..7bed27601ce59f 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -233,6 +233,8 @@ struct cifsTconInfo {
 	atomic_t num_hardlinks;
 	atomic_t num_symlinks;
 	atomic_t num_locks;
+	atomic_t num_acl_get;
+	atomic_t num_acl_set;
 #ifdef CONFIG_CIFS_STATS2
 	unsigned long long time_writes;
 	unsigned long long time_reads;
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 3c09fb9cc56974..cc2471094ca58f 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -528,7 +528,7 @@ typedef union smb_com_session_setup_andx {
 		/* STRING PrimaryDomain */
 		/* STRING NativeOS */
 		/* STRING NativeLanMan */
-	} __attribute__((packed)) old_req;		/* pre-NTLM (LANMAN2.1) request format */
+	} __attribute__((packed)) old_req; /* pre-NTLM (LANMAN2.1) req format */
 
 	struct {		/* default (NTLM) response format */
 		struct smb_hdr hdr;	/* wct = 3 */
@@ -540,7 +540,7 @@ typedef union smb_com_session_setup_andx {
 		unsigned char NativeOS[1];	/* followed by */
 /*	unsigned char * NativeLanMan; */
 /*      unsigned char * PrimaryDomain; */
-	} __attribute__((packed)) old_resp;		/* pre-NTLM (LANMAN2.1) response format */
+	} __attribute__((packed)) old_resp; /* pre-NTLM (LANMAN2.1) response */
 } __attribute__((packed)) SESSION_SETUP_ANDX;
 
 #define CIFS_NETWORK_OPSYS "CIFS VFS Client for Linux"
@@ -1007,10 +1007,49 @@ typedef struct smb_com_setattr_rsp {
 
 /* empty wct response to setattr */
 
-/***************************************************/
-/* NT Transact structure defintions follow         */
-/* Currently only ioctl and notify are implemented */
-/***************************************************/
+/*******************************************************/
+/* NT Transact structure defintions follow             */
+/* Currently only ioctl, acl (get security descriptor) */  
+/* and notify are implemented                          */
+/*******************************************************/
+typedef struct smb_com_ntransact_req {
+        struct smb_hdr hdr; /* wct >= 19 */
+        __u8 MaxSetupCount;
+        __u16 Reserved;
+        __le32 TotalParameterCount;
+        __le32 TotalDataCount;
+        __le32 MaxParameterCount;
+        __le32 MaxDataCount;
+        __le32 ParameterCount;
+        __le32 ParameterOffset;
+        __le32 DataCount;
+        __le32 DataOffset;
+        __u8 SetupCount; /* four setup words follow subcommand */
+        /* SNIA spec incorrectly included spurious pad here */
+        __le16 SubCommand; /* 2 = IOCTL/FSCTL */
+	/* SetupCount words follow then */ 
+        __le16 ByteCount;
+        __u8 Pad[3];
+        __u8 Parms[0];
+} __attribute__((packed)) NTRANSACT_REQ;
+
+typedef struct smb_com_ntransact_rsp {
+	struct smb_hdr hdr;     /* wct = 18 */
+	__u8 Reserved[3];
+	__le32 TotalParameterCount;
+	__le32 TotalDataCount;
+	__le32 ParameterCount;
+	__le32 ParameterOffset;
+	__le32 ParameterDisplacement;
+	__le32 DataCount;
+	__le32 DataOffset;
+	__le32 DataDisplacement;
+	__u8 SetupCount;   /* 0 */
+	__u16 ByteCount;
+        /* __u8 Pad[3]; */
+	/* parms and data follow */
+} __attribute__((packed)) NTRANSACT_RSP;
+
 typedef struct smb_com_transaction_ioctl_req {
 	struct smb_hdr hdr;	/* wct = 23 */
 	__u8 MaxSetupCount;
@@ -1025,11 +1064,11 @@ typedef struct smb_com_transaction_ioctl_req {
 	__le32 DataOffset;
 	__u8 SetupCount; /* four setup words follow subcommand */
 	/* SNIA spec incorrectly included spurious pad here */
-	__le16 SubCommand;/* 2 = IOCTL/FSCTL */
+	__le16 SubCommand; /* 2 = IOCTL/FSCTL */
 	__le32 FunctionCode;
 	__u16 Fid;
-	__u8 IsFsctl;    /* 1 = File System Control, 0 = device control (IOCTL)*/
-	__u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS share)*/
+	__u8 IsFsctl;  /* 1 = File System Control 0 = device control (IOCTL) */
+	__u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
 	__le16 ByteCount;
 	__u8 Pad[3];
 	__u8 Data[1];
@@ -1049,9 +1088,35 @@ typedef struct smb_com_transaction_ioctl_rsp {
 	__u8 SetupCount;	/* 1 */
 	__le16 ReturnedDataLen;
 	__u16 ByteCount;
-	__u8 Pad[3];
 } __attribute__((packed)) TRANSACT_IOCTL_RSP;
 
+#define CIFS_ACL_OWNER 1
+#define CIFS_ACL_GROUP 2
+#define CIFS_ACL_DACL  4
+#define CIFS_ACL_SACL  8
+
+typedef struct smb_com_transaction_qsec_req {
+	struct smb_hdr hdr;     /* wct = 19 */
+	__u8 MaxSetupCount;
+	__u16 Reserved;
+	__le32 TotalParameterCount;
+	__le32 TotalDataCount;
+	__le32 MaxParameterCount;
+	__le32 MaxDataCount;
+	__le32 ParameterCount;
+	__le32 ParameterOffset;
+	__le32 DataCount;
+	__le32 DataOffset;
+	__u8 SetupCount; /* no setup words follow subcommand */
+	/* SNIA spec incorrectly included spurious pad here */
+	__le16 SubCommand; /* 6 = QUERY_SECURITY_DESC */
+	__le16 ByteCount; /* bcc = 3 + 8 */
+	__u8 Pad[3];
+	__u16 Fid;
+	__u16 Reserved2;
+	__le32 AclFlags;
+} __attribute__((packed)) QUERY_SEC_DESC_REQ;
+
 typedef struct smb_com_transaction_change_notify_req {
 	struct smb_hdr hdr;     /* wct = 23 */
 	__u8 MaxSetupCount;
@@ -1072,10 +1137,12 @@ typedef struct smb_com_transaction_change_notify_req {
 	__u8 WatchTree;  /* 1 = Monitor subdirectories */
 	__u8 Reserved2;
 	__le16 ByteCount;
-/* __u8 Pad[3];*/
+/* 	__u8 Pad[3];*/
 /*	__u8 Data[1];*/
 } __attribute__((packed)) TRANSACT_CHANGE_NOTIFY_REQ;
 
+/* BB eventually change to use generic ntransact rsp struct 
+      and validation routine */
 typedef struct smb_com_transaction_change_notify_rsp {
 	struct smb_hdr hdr;	/* wct = 18 */
 	__u8 Reserved[3];
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 8ef0ce47f5b6d7..3c03aadaff0c47 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -299,6 +299,9 @@ extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
 		const char *fileName, const char * ea_name, 
 		const void * ea_value, const __u16 ea_value_len, 
 		const struct nls_table *nls_codepage, int remap_special_chars);
+extern int CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon,
+			__u16 fid, char *acl_inf, const int buflen,
+			const int acl_type /* ACCESS vs. DEFAULT */);
 extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
 		const unsigned char *searchName,
 		char *acl_inf, const int buflen,const int acl_type,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1620991cd4d280..20300bc9ae7786 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1926,6 +1926,90 @@ querySymLinkRetry:
 	return rc;
 }
 
+/* Initialize NT TRANSACT SMB into small smb request buffer.
+   This assumes that all NT TRANSACTS that we init here have
+   total parm and data under about 400 bytes (to fit in small cifs
+   buffer size), which is the case so far, it easily fits. NB:
+	Setup words themselves and ByteCount
+	MaxSetupCount (size of returned setup area) and
+	MaxParameterCount (returned parms size) must be set by caller */
+static int 
+smb_init_ntransact(const __u16 sub_command, const int setup_count,
+		   const int parm_len, struct cifsTconInfo *tcon,
+		   void ** ret_buf)
+{
+	int rc;
+	__u32 temp_offset;
+	struct smb_com_ntransact_req * pSMB;
+
+	rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
+				(void **)&pSMB);
+	if (rc)
+		return rc;
+	*ret_buf = (void *)pSMB;
+	pSMB->Reserved = 0;
+	pSMB->TotalParameterCount = cpu_to_le32(parm_len);
+	pSMB->TotalDataCount  = 0;
+	pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
+					  MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
+	pSMB->ParameterCount = pSMB->TotalParameterCount;
+	pSMB->DataCount  = pSMB->TotalDataCount;
+	temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
+			(setup_count * 2) - 4 /* for rfc1001 length itself */;
+	pSMB->ParameterOffset = cpu_to_le32(temp_offset);
+	pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
+	pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
+	pSMB->SubCommand = cpu_to_le16(sub_command);
+	return 0;
+}
+
+static int
+validate_ntransact(char * buf, char ** ppparm, char ** ppdata,
+		   int * pdatalen, int * pparmlen)
+{
+	char * end_of_smb;
+	__u32 data_count, data_offset, parm_count, parm_offset;
+	struct smb_com_ntransact_rsp * pSMBr;
+
+	if(buf == NULL)
+		return -EINVAL;
+
+	pSMBr = (struct smb_com_ntransact_rsp *)buf;
+
+	/* ByteCount was converted from little endian in SendReceive */
+	end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + 
+			(char *)&pSMBr->ByteCount;
+
+		
+	data_offset = le32_to_cpu(pSMBr->DataOffset);
+	data_count = le32_to_cpu(pSMBr->DataCount);
+        parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
+	parm_count = le32_to_cpu(pSMBr->ParameterCount);
+
+	*ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
+	*ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
+
+	/* should we also check that parm and data areas do not overlap? */
+	if(*ppparm > end_of_smb) {
+		cFYI(1,("parms start after end of smb"));
+		return -EINVAL;
+	} else if(parm_count + *ppparm > end_of_smb) {
+		cFYI(1,("parm end after end of smb"));
+		return -EINVAL;
+	} else if(*ppdata > end_of_smb) {
+		cFYI(1,("data starts after end of smb"));
+		return -EINVAL;
+	} else if(data_count + *ppdata > end_of_smb) {
+		cFYI(1,("data %p + count %d (%p) ends after end of smb %p start %p",
+			*ppdata, data_count, (data_count + *ppdata), end_of_smb, pSMBr));  /* BB FIXME */
+		return -EINVAL;
+	} else if(parm_count + data_count > pSMBr->ByteCount) {
+		cFYI(1,("parm count and data count larger than SMB"));
+		return -EINVAL;
+	}
+	return 0;
+}
+
 int
 CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
 			const unsigned char *searchName,
@@ -1948,7 +2032,8 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
 	pSMB->TotalDataCount = 0;
 	pSMB->MaxParameterCount = cpu_to_le32(2);
 	/* BB find exact data count max from sess structure BB */
-	pSMB->MaxDataCount = cpu_to_le32(4000);
+	pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
+					  MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
 	pSMB->MaxSetupCount = 4;
 	pSMB->Reserved = 0;
 	pSMB->ParameterOffset = 0;
@@ -1975,7 +2060,9 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
 			rc = -EIO;	/* bad smb */
 		else {
 			if(data_count && (data_count < 2048)) {
-				char * end_of_smb = pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
+				char * end_of_smb = 2 /* sizeof byte count */ +
+						pSMBr->ByteCount +
+						(char *)&pSMBr->ByteCount;
 
 				struct reparse_data * reparse_buf = (struct reparse_data *)
 					((char *)&pSMBr->hdr.Protocol + data_offset);
@@ -2219,6 +2306,7 @@ queryAclRetry:
 
 	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
 		(struct smb_hdr *) pSMBr, &bytes_returned, 0);
+	cifs_stats_inc(&tcon->num_acl_get);
 	if (rc) {
 		cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
 	} else {
@@ -2406,6 +2494,87 @@ GetExtAttrOut:
 
 #endif /* CONFIG_POSIX */
 
+/* Convert CIFS ACL to POSIX form */
+static int parse_sec_desc(struct sec_desc * psec_desc, int acl_len)
+{
+	CHECK ON OTHER COMPUTER TO SEE IF FORMAT ENCODED IN CIFSPDU.H ALREADY
+	return 0;
+}
+
+/* Get Security Descriptor (by handle) from remote server for a file or dir */
+int
+CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
+         /*  BB fix up return info */ char *acl_inf, const int buflen, 
+		  const int acl_type /* ACCESS/DEFAULT not sure implication */)
+{
+	int rc = 0;
+	int buf_type = 0;
+	QUERY_SEC_DESC_REQ * pSMB;
+	struct kvec iov[1];
+
+	cFYI(1, ("GetCifsACL"));
+
+	rc = smb_init_ntransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, 
+			8 /* parm len */, tcon, (void **) &pSMB);
+	if (rc)
+		return rc;
+
+	pSMB->MaxParameterCount = cpu_to_le32(4);
+	/* BB TEST with big acls that might need to be e.g. larger than 16K */
+	pSMB->MaxSetupCount = 0;
+	pSMB->Fid = fid; /* file handle always le */
+	pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
+				     CIFS_ACL_DACL);
+	pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
+	pSMB->hdr.smb_buf_length += 11;
+	iov[0].iov_base = (char *)pSMB;
+	iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
+
+	rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, 0);
+	cifs_stats_inc(&tcon->num_acl_get);
+	if (rc) {
+		cFYI(1, ("Send error in QuerySecDesc = %d", rc));
+	} else {                /* decode response */
+		struct sec_desc * psec_desc;
+		__le32 * parm;
+		int parm_len;
+		int data_len;
+		int acl_len;
+		struct smb_com_ntransact_rsp * pSMBr;
+
+/* validate_nttransact */
+		rc = validate_ntransact(iov[0].iov_base, (char **)&parm, 
+					(char **)&psec_desc,
+					&parm_len, &data_len);
+		
+		if(rc)
+			goto qsec_out;
+		pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base;
+
+		cERROR(1,("smb %p parm %p data %p",pSMBr,parm,psec_desc));  /* BB removeme BB */
+
+		if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
+			rc = -EIO;      /* bad smb */
+			goto qsec_out;
+		}
+
+/* BB check that data area is minimum length and as big as acl_len */
+
+		acl_len = le32_to_cpu(*(__le32 *)parm);
+		/* BB check if(acl_len > bufsize) */
+
+		parse_sec_desc(psec_desc, acl_len);
+	}
+qsec_out:
+	if(buf_type == CIFS_SMALL_BUFFER)
+		cifs_small_buf_release(iov[0].iov_base);
+	else if(buf_type == CIFS_LARGE_BUFFER)
+		cifs_buf_release(iov[0].iov_base);
+	cifs_small_buf_release(pSMB);
+	return rc;
+}
+
+
 /* Legacy Query Path Information call for lookup to old servers such
    as Win9x/WinME */
 int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
@@ -4304,7 +4473,7 @@ int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
 {
 	int rc = 0;
 	struct smb_com_transaction_change_notify_req * pSMB = NULL;
-	struct smb_com_transaction_change_notify_rsp * pSMBr = NULL;
+	struct smb_com_ntransaction_change_notify_rsp * pSMBr = NULL;
 	struct dir_notify_req *dnotify_req;
 	int bytes_returned;
 
@@ -4319,6 +4488,10 @@ int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
 	pSMB->MaxParameterCount = cpu_to_le32(2);
 	/* BB find exact data count max from sess structure BB */
 	pSMB->MaxDataCount = 0; /* same in little endian or be */
+/* BB VERIFY verify which is correct for above BB */
+	pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
+					     MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
+
 	pSMB->MaxSetupCount = 4;
 	pSMB->Reserved = 0;
 	pSMB->ParameterOffset = 0;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 45c9d726c0021b..1817d5313a8a6d 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -76,6 +76,7 @@ struct smb_vol {
 	unsigned setuids:1;
 	unsigned noperm:1;
 	unsigned no_psx_acl:1; /* set if posix acl support should be disabled */
+	unsigned cifs_acl:1;
 	unsigned no_xattr:1;   /* set if xattr (EA) support should be disabled*/
 	unsigned server_ino:1; /* use inode numbers from server ie UniqueId */
 	unsigned direct_io:1;
@@ -1159,6 +1160,10 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
 			vol->server_ino = 1;
 		} else if (strnicmp(data, "noserverino",9) == 0) {
 			vol->server_ino = 0;
+		} else if (strnicmp(data, "cifsacl",7) == 0) {
+			vol->cifs_acl = 1;
+		} else if (strnicmp(data, "nocifsacl", 9) == 0) {
+			vol->cifs_acl = 0;
 		} else if (strnicmp(data, "acl",3) == 0) {
 			vol->no_psx_acl = 0;
 		} else if (strnicmp(data, "noacl",5) == 0) {
@@ -1806,6 +1811,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 			cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
 		if(volume_info.nobrl)
 			cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+		if(volume_info.cifs_acl)
+			cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
 
 		if(volume_info.direct_io) {
 			cFYI(1,("mounting share using direct i/o"));
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index c96a148c39b22f..7b98792150ea7e 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -489,7 +489,6 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 			receive_len, xid));
 		rc = -EIO;
 	} else {		/* rcvd frame is ok */
-
 		if (midQ->resp_buf && 
 			(midQ->midState == MID_RESPONSE_RECEIVED)) {
 
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index f375f87c7dbd36..777e3363c2a4dd 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -254,7 +254,8 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
 		rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
 			buf_size, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
-	} else if(strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
+	} else if(strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
+			  strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
 #ifdef CONFIG_CIFS_POSIX
 		if(sb->s_flags & MS_POSIXACL)
 			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
@@ -262,10 +263,27 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
 				cifs_sb->local_nls,
 				cifs_sb->mnt_cifs_flags & 
 					CIFS_MOUNT_MAP_SPECIAL_CHR);
+/*		else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
+			__u16 fid;
+			int oplock = FALSE;
+			rc = CIFSSMBOpen(xid, pTcon, full_path,
+					 FILE_OPEN, GENERIC_READ, 0, &fid,
+					 &oplock, NULL, cifs_sb->local_nls,
+					 cifs_sb->mnt_cifs_flags &
+					 CIFS_MOUNT_MAP_SPECIAL_CHR);
+			if(rc == 0) {
+				rc = CIFSSMBGetCIFSACL(xid, pTcon, fid,
+					ea_value, buf_size,
+					ACL_TYPE_ACCESS);
+				CIFSSMBClose(xid, pTcon, fid)
+			}
+		} */  /* BB enable after fixing up return data */
+                  		
 #else 
 		cFYI(1,("query POSIX ACL not supported yet"));
 #endif /* CONFIG_CIFS_POSIX */
-	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
+	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,
+			  strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
 #ifdef CONFIG_CIFS_POSIX
 		if(sb->s_flags & MS_POSIXACL)
 			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
-- 
cgit 1.2.3-korg


From 84153973a29dfb3f3d9fe2fe75c2cd613a3cdf27 Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Thu, 12 Jan 2006 20:57:56 -0800
Subject: [CIFS] Fix typo

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifssmb.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'fs')

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 20300bc9ae7786..ca0f573e9791c8 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2497,7 +2497,6 @@ GetExtAttrOut:
 /* Convert CIFS ACL to POSIX form */
 static int parse_sec_desc(struct sec_desc * psec_desc, int acl_len)
 {
-	CHECK ON OTHER COMPUTER TO SEE IF FORMAT ENCODED IN CIFSPDU.H ALREADY
 	return 0;
 }
 
-- 
cgit 1.2.3-korg


From eeac8047fcf4c659eb15f2e27a0ef4aeba64157f Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Fri, 13 Jan 2006 21:34:58 -0800
Subject: [CIFS] Fix CIFS to recognize share mode security

Fix Samba bugzilla bug 3301

In share mode encrypted password must be sent on tree connection (in our
case only the NTLM password is sent, not the older LANMAN one).

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/CHANGES   |  3 ++-
 fs/cifs/cifsacl.h |  6 +++---
 fs/cifs/cifssmb.c | 20 ++++++++++++++------
 fs/cifs/connect.c | 27 ++++++++++++++++++++++-----
 4 files changed, 41 insertions(+), 15 deletions(-)

(limited to 'fs')

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index c7995c96f06994..d335015473a520 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -3,7 +3,8 @@ Version 1.40
 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
 of readpages by eliminating one extra memcpy. Allow update of file size
 from remote server even if file is open for write as long as mount is
-directio.
+directio.  Recognize share mode security and send NTLM encrypted password
+on tree connect if share mode negotiated.
 
 Version 1.39
 ------------
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index d152ff50ea8c39..d0776ac2b80489 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -26,13 +26,13 @@ struct cifs_sid {
 	__u8 revision; /* revision level */
 	__u8 num_subauths;
 	__u8 authority[6];
-	__u8 sub_auth[4];
+	__u32 sub_auth[4];
 	/* next sub_auth if any ... */
 } __attribute__((packed));
 
 /* everyone */
-const cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+extern const struct cifs_sid sid_everyone;
 /* group users */
-const cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+extern const struct cifs_sid sid_user;
 
 #endif /* _CIFSACL_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index ca0f573e9791c8..7a4e936d726c2b 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -37,6 +37,7 @@
 #include "cifsproto.h"
 #include "cifs_unicode.h"
 #include "cifs_debug.h"
+#include "cifsacl.h"
 
 #ifdef CONFIG_CIFS_POSIX
 static struct {
@@ -372,8 +373,10 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 	rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
 			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
 	if (rc == 0) {
-		server->secMode = pSMBr->SecurityMode;	
-		server->secType = NTLM; /* BB override default for 
+		server->secMode = pSMBr->SecurityMode;
+		if((server->secMode & SECMODE_USER) == 0)
+			cFYI(1,("share mode security"));
+		server->secType = NTLM; /* BB override default for
 					   NTLMv2 or kerberos v5 */
 		/* one byte - no need to convert this or EncryptionKeyLen
 		   from little endian */
@@ -383,7 +386,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 			min(le32_to_cpu(pSMBr->MaxBufferSize),
 			(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
 		server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
-		cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
+		cFYI(0, ("Max buf = %d", ses->server->maxBuf));
 		GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
 		server->capabilities = le32_to_cpu(pSMBr->Capabilities);
 		server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);	
@@ -411,8 +414,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 						(server->server_GUID,
 						pSMBr->u.extended_response.
 						GUID, 16) != 0) {
-						cFYI(1,
-						     ("UID of server does not match previous connection to same ip address"));
+						cFYI(1, ("server UID changed"));
 						memcpy(server->
 							server_GUID,
 							pSMBr->u.
@@ -2494,8 +2496,14 @@ GetExtAttrOut:
 
 #endif /* CONFIG_POSIX */
 
+
+/* security id for everyone */
+const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+/* group users */
+const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+
 /* Convert CIFS ACL to POSIX form */
-static int parse_sec_desc(struct sec_desc * psec_desc, int acl_len)
+static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len)
 {
 	return 0;
 }
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 1817d5313a8a6d..88f60aa520584a 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1795,7 +1795,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		cifs_sb->mnt_gid = volume_info.linux_gid;
 		cifs_sb->mnt_file_mode = volume_info.file_mode;
 		cifs_sb->mnt_dir_mode = volume_info.dir_mode;
-		cFYI(1,("file mode: 0x%x  dir mode: 0x%x",cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
+		cFYI(1,("file mode: 0x%x  dir mode: 0x%x",
+			cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
 
 		if(volume_info.noperm)
 			cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
@@ -1972,7 +1973,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
 	__u32 capabilities;
 	__u16 count;
 
-	cFYI(1, ("In sesssetup "));
+	cFYI(1, ("In sesssetup"));
 	if(ses == NULL)
 		return -EINVAL;
 	user = ses->userName;
@@ -3248,9 +3249,26 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 
 	pSMB->AndXCommand = 0xFF;
 	pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
-	pSMB->PasswordLength = cpu_to_le16(1);	/* minimum */
 	bcc_ptr = &pSMB->Password[0];
-	bcc_ptr++;		/* skip password */
+	if((ses->server->secMode) & SECMODE_USER) {
+		pSMB->PasswordLength = cpu_to_le16(1);	/* minimum */
+		bcc_ptr++;              /* skip password */
+	} else {
+		pSMB->PasswordLength = cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+		/* BB FIXME add code to fail this if NTLMv2 or Kerberos
+		   specified as required (when that support is added to
+		   the vfs in the future) as only NTLM or the much
+		   weaker LANMAN (which we do not send) is accepted
+		   by Samba (not sure whether other servers allow
+		   NTLMv2 password here) */
+		SMBNTencrypt(ses->password,
+			     ses->server->cryptKey,
+			     bcc_ptr);
+
+		bcc_ptr += CIFS_SESSION_KEY_SIZE;
+		*bcc_ptr = 0;
+		bcc_ptr++; /* align */
+	}
 
 	if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 		smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
@@ -3268,7 +3286,6 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 		bcc_ptr += 2 * length;	/* convert num of 16 bit words to bytes */
 		bcc_ptr += 2;	/* skip trailing null */
 	} else {		/* ASCII */
-
 		strcpy(bcc_ptr, tree);
 		bcc_ptr += strlen(tree) + 1;
 	}
-- 
cgit 1.2.3-korg


From d41f084a74de860fe879403fbbad13abdf7aea8e Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Tue, 17 Jan 2006 19:16:53 -0800
Subject: [CIFS] Remove compiler warning

Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/cifssmb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fs')

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 7a4e936d726c2b..217323b0c8966a 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2542,7 +2542,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
 	if (rc) {
 		cFYI(1, ("Send error in QuerySecDesc = %d", rc));
 	} else {                /* decode response */
-		struct sec_desc * psec_desc;
+		struct cifs_sid * psec_desc;
 		__le32 * parm;
 		int parm_len;
 		int data_len;
-- 
cgit 1.2.3-korg


From 47c886b3123a335f0622136e021e7691d60d742c Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@us.ibm.com>
Date: Wed, 18 Jan 2006 14:20:39 -0800
Subject: [CIFS] Fix oops in cifs_readpages caused by not checking buf_type in
 an error path of new cifs_readpages code.

Signed-off-by: Steve French <sfrench@us.ibm.com>
---
 fs/cifs/file.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'fs')

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 378095a442d0a5..77c990f0cb9817 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1754,7 +1754,10 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 
 /* need to free smb_read_data buf before exit */
 	if (smb_read_data) {
-		cifs_buf_release(smb_read_data);
+		if(buf_type == CIFS_SMALL_BUFFER)
+			cifs_small_buf_release(smb_read_data);
+		else if(buf_type == CIFS_LARGE_BUFFER)
+			cifs_buf_release(smb_read_data);
 		smb_read_data = NULL;
 	} 
 
-- 
cgit 1.2.3-korg