Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1096 insertions, 0 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
new file mode 100644
index 000000000000..d73b0aa86775
--- /dev/null
+++ b/fs/cifs/inode.c
@@ -0,0 +1,1096 @@
+/*
+ *   fs/cifs/inode.c
+ *
+ *   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
+ *   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
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/stat.h>
+#include <linux/pagemap.h>
+#include <asm/div64.h>
+#include "cifsfs.h"
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifs_fs_sb.h"
+
+int cifs_get_inode_info_unix(struct inode **pinode,
+	const unsigned char *search_path, struct super_block *sb, int xid)
+{
+	int rc = 0;
+	FILE_UNIX_BASIC_INFO findData;
+	struct cifsTconInfo *pTcon;
+	struct inode *inode;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+	char *tmp_path;
+
+	pTcon = cifs_sb->tcon;
+	cFYI(1, (" Getting info on %s ", search_path));
+	/* could have done a find first instead but this returns more info */
+	rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
+				  cifs_sb->local_nls);
+/*	dump_mem("\nUnixQPathInfo return data", &findData,
+		 sizeof(findData)); */
+	if (rc) {
+		if (rc == -EREMOTE) {
+			tmp_path =
+			    kmalloc(strnlen(pTcon->treeName,
+					    MAX_TREE_SIZE + 1) +
+				    strnlen(search_path, MAX_PATHCONF) + 1,
+				    GFP_KERNEL);
+			if (tmp_path == NULL) {
+				return -ENOMEM;
+			}
+        		/* have to skip first of the double backslash of
+			   UNC name */
+			strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
+			strncat(tmp_path, search_path, MAX_PATHCONF);
+			rc = connect_to_dfs_path(xid, pTcon->ses,
+						 /* treename + */ tmp_path,
+						 cifs_sb->local_nls);
+			kfree(tmp_path);
+
+			/* BB fix up inode etc. */
+		} else if (rc) {
+			return rc;
+		}
+	} else {
+		struct cifsInodeInfo *cifsInfo;
+		__u32 type = le32_to_cpu(findData.Type);
+		__u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
+		__u64 end_of_file = le64_to_cpu(findData.EndOfFile);
+
+		/* get new inode */
+		if (*pinode == NULL) {
+			*pinode = new_inode(sb);
+			if(*pinode == NULL) 
+				return -ENOMEM;
+			/* 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) {
+				(*pinode)->i_ino =
+					(unsigned long)findData.UniqueId;
+			} /* note ino incremented to unique num in new_inode */
+			insert_inode_hash(*pinode);
+		}
+
+		inode = *pinode;
+		cifsInfo = CIFS_I(inode);
+
+		cFYI(1, (" Old time %ld ", cifsInfo->time));
+		cifsInfo->time = jiffies;
+		cFYI(1, (" New time %ld ", cifsInfo->time));
+		/* this is ok to set on every inode revalidate */
+		atomic_set(&cifsInfo->inUse,1);
+
+		inode->i_atime =
+		    cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
+		inode->i_mtime =
+		    cifs_NTtimeToUnix(le64_to_cpu
+				(findData.LastModificationTime));
+		inode->i_ctime =
+		    cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
+		inode->i_mode = le64_to_cpu(findData.Permissions);
+		if (type == UNIX_FILE) {
+			inode->i_mode |= S_IFREG;
+		} else if (type == UNIX_SYMLINK) {
+			inode->i_mode |= S_IFLNK;
+		} else if (type == UNIX_DIR) {
+			inode->i_mode |= S_IFDIR;
+		} else if (type == UNIX_CHARDEV) {
+			inode->i_mode |= S_IFCHR;
+			inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
+				le64_to_cpu(findData.DevMinor) & MINORMASK);
+		} else if (type == UNIX_BLOCKDEV) {
+			inode->i_mode |= S_IFBLK;
+			inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
+				le64_to_cpu(findData.DevMinor) & MINORMASK);
+		} else if (type == UNIX_FIFO) {
+			inode->i_mode |= S_IFIFO;
+		} else if (type == UNIX_SOCKET) {
+			inode->i_mode |= S_IFSOCK;
+		}
+		inode->i_uid = le64_to_cpu(findData.Uid);
+		inode->i_gid = le64_to_cpu(findData.Gid);
+		inode->i_nlink = le64_to_cpu(findData.Nlinks);
+
+		if(is_size_safe_to_change(cifsInfo)) {
+		/* can not safely change the file size here if the
+		   client is writing to it due to potential races */
+
+			i_size_write(inode, end_of_file);
+
+		/* blksize needs to be multiple of two. So safer to default to
+		blksize and blkbits set in superblock so 2**blkbits and blksize
+		will match rather than setting to:
+		(pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
+
+		/* This seems incredibly stupid but it turns out that i_blocks
+		   is not related to (i_size / i_blksize), instead 512 byte size
+		   is required for calculating num blocks */
+
+		/* 512 bytes (2**9) is the fake blocksize that must be used */
+		/* for this calculation */
+			inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
+		}
+
+		if (num_of_bytes < end_of_file)
+			cFYI(1, ("allocation size less than end of file "));
+		cFYI(1,
+		     ("Size %ld and blocks %ld",
+		      (unsigned long) inode->i_size, inode->i_blocks));
+		if (S_ISREG(inode->i_mode)) {
+			cFYI(1, (" File inode "));
+			inode->i_op = &cifs_file_inode_ops;
+			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
+				inode->i_fop = &cifs_file_direct_ops;
+			else
+				inode->i_fop = &cifs_file_ops;
+			inode->i_data.a_ops = &cifs_addr_ops;
+		} else if (S_ISDIR(inode->i_mode)) {
+			cFYI(1, (" Directory inode"));
+			inode->i_op = &cifs_dir_inode_ops;
+			inode->i_fop = &cifs_dir_ops;
+		} else if (S_ISLNK(inode->i_mode)) {
+			cFYI(1, (" Symbolic Link inode "));
+			inode->i_op = &cifs_symlink_inode_ops;
+		/* tmp_inode->i_fop = */ /* do not need to set to anything */
+		} else {
+			cFYI(1, (" Init special inode "));
+			init_special_inode(inode, inode->i_mode,
+					   inode->i_rdev);
+		}
+	}
+	return rc;
+}
+
+int cifs_get_inode_info(struct inode **pinode,
+	const unsigned char *search_path, FILE_ALL_INFO *pfindData,
+	struct super_block *sb, int xid)
+{
+	int rc = 0;
+	struct cifsTconInfo *pTcon;
+	struct inode *inode;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+	char *tmp_path;
+	char *buf = NULL;
+
+	pTcon = cifs_sb->tcon;
+	cFYI(1,("Getting info on %s ", search_path));
+
+	if((pfindData == NULL) && (*pinode != NULL)) {
+		if(CIFS_I(*pinode)->clientCanCacheRead) {
+			cFYI(1,("No need to revalidate cached inode sizes"));
+			return rc;
+		}
+	}
+
+	/* if file info not passed in then get it from server */
+	if(pfindData == NULL) {
+		buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+		if(buf == NULL)
+			return -ENOMEM;
+		pfindData = (FILE_ALL_INFO *)buf;
+		/* could do find first instead but this returns more info */
+		rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
+			      cifs_sb->local_nls);
+	}
+	/* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
+	if (rc) {
+		if (rc == -EREMOTE) {
+			tmp_path =
+			    kmalloc(strnlen
+				    (pTcon->treeName,
+				     MAX_TREE_SIZE + 1) +
+				    strnlen(search_path, MAX_PATHCONF) + 1,
+				    GFP_KERNEL);
+			if (tmp_path == NULL) {
+				kfree(buf);
+				return -ENOMEM;
+			}
+
+			strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
+			strncat(tmp_path, search_path, MAX_PATHCONF);
+			rc = connect_to_dfs_path(xid, pTcon->ses,
+						 /* treename + */ tmp_path,
+						 cifs_sb->local_nls);
+			kfree(tmp_path);
+			/* BB fix up inode etc. */
+		} else if (rc) {
+			kfree(buf);
+			return rc;
+		}
+	} else {
+		struct cifsInodeInfo *cifsInfo;
+		__u32 attr = le32_to_cpu(pfindData->Attributes);
+
+		/* get new inode */
+		if (*pinode == NULL) {
+			*pinode = new_inode(sb);
+			if (*pinode == NULL)
+				return -ENOMEM;
+			/* 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
+			   the server is really filling in that field? */
+
+			/* We can not use the IndexNumber field by default from
+			   Windows or Samba (in ALL_INFO buf) but we can request
+			   it explicitly.  It may not be unique presumably if
+			   the server has multiple devices mounted under one
+			   share */
+
+			/* There may be higher info levels that work but are
+			   there Windows server or network appliances for which
+			   IndexNumber field is not guaranteed unique? */
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL		
+			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
+				int rc1 = 0;
+				__u64 inode_num;
+
+				rc1 = CIFSGetSrvInodeNumber(xid, pTcon, 
+					search_path, &inode_num, 
+					cifs_sb->local_nls);
+				if(rc1) {
+					cFYI(1,("GetSrvInodeNum rc %d", rc1));
+					/* 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*/
+#endif /* CIFS_EXPERIMENTAL */
+			insert_inode_hash(*pinode);
+		}
+		inode = *pinode;
+		cifsInfo = CIFS_I(inode);
+		cifsInfo->cifsAttrs = attr;
+		cFYI(1, (" Old time %ld ", cifsInfo->time));
+		cifsInfo->time = jiffies;
+		cFYI(1, (" New time %ld ", cifsInfo->time));
+
+		/* blksize needs to be multiple of two. So safer to default to
+		blksize and blkbits set in superblock so 2**blkbits and blksize
+		will match rather than setting to:
+		(pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
+
+		/* Linux can not store file creation time unfortunately so we ignore it */
+		inode->i_atime =
+		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
+		inode->i_mtime =
+		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
+		inode->i_ctime =
+		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
+		cFYI(0, (" Attributes came in as 0x%x ", attr));
+
+		/* set default mode. will override for dirs below */
+		if (atomic_read(&cifsInfo->inUse) == 0)
+			/* new inode, can safely set these fields */
+			inode->i_mode = cifs_sb->mnt_file_mode;
+
+/*		if (attr & ATTR_REPARSE)  */
+		/* We no longer handle these as symlinks because we could not
+		   follow them due to the absolute path with drive letter */
+		if (attr & ATTR_DIRECTORY) {
+		/* override default perms since we do not do byte range locking
+		   on dirs */
+			inode->i_mode = cifs_sb->mnt_dir_mode;
+			inode->i_mode |= S_IFDIR;
+		} else {
+			inode->i_mode |= S_IFREG;
+			/* treat the dos attribute of read-only as read-only
+			   mode e.g. 555 */
+			if (cifsInfo->cifsAttrs & ATTR_READONLY)
+				inode->i_mode &= ~(S_IWUGO);
+		/* BB add code here -
+		   validate if device or weird share or device type? */
+		}
+		if (is_size_safe_to_change(cifsInfo)) {
+			/* can not safely change the file size here if the
+			   client is writing to it due to potential races */
+			i_size_write(inode,le64_to_cpu(pfindData->EndOfFile));
+
+			/* 512 bytes (2**9) is the fake blocksize that must be
+			   used for this calculation */
+			inode->i_blocks = (512 - 1 + le64_to_cpu(
+					   pfindData->AllocationSize)) >> 9;
+		}
+
+		inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
+
+		/* BB fill in uid and gid here? with help from winbind? 
+		   or retrieve from NTFS stream extended attribute */
+		if (atomic_read(&cifsInfo->inUse) == 0) {
+			inode->i_uid = cifs_sb->mnt_uid;
+			inode->i_gid = cifs_sb->mnt_gid;
+			/* set so we do not keep refreshing these fields with
+			   bad data after user has changed them in memory */
+			atomic_set(&cifsInfo->inUse,1);
+		}
+
+		if (S_ISREG(inode->i_mode)) {
+			cFYI(1, (" File inode "));
+			inode->i_op = &cifs_file_inode_ops;
+			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
+				inode->i_fop = &cifs_file_direct_ops;
+			else
+				inode->i_fop = &cifs_file_ops;
+			inode->i_data.a_ops = &cifs_addr_ops;
+		} else if (S_ISDIR(inode->i_mode)) {
+			cFYI(1, (" Directory inode "));
+			inode->i_op = &cifs_dir_inode_ops;
+			inode->i_fop = &cifs_dir_ops;
+		} else if (S_ISLNK(inode->i_mode)) {
+			cFYI(1, (" Symbolic Link inode "));
+			inode->i_op = &cifs_symlink_inode_ops;
+		} else {
+			init_special_inode(inode, inode->i_mode,
+					   inode->i_rdev);
+		}
+	}
+	kfree(buf);
+	return rc;
+}
+
+/* gets root inode */
+void cifs_read_inode(struct inode *inode)
+{
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+	xid = GetXid();
+	if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
+		cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid);
+	else
+		cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid);
+	/* can not call macro FreeXid here since in a void func */
+	_FreeXid(xid);
+}
+
+int cifs_unlink(struct inode *inode, struct dentry *direntry)
+{
+	int rc = 0;
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *pTcon;
+	char *full_path = NULL;
+	struct cifsInodeInfo *cifsInode;
+	FILE_BASIC_INFO *pinfo_buf;
+
+	cFYI(1, (" cifs_unlink, inode = 0x%p with ", inode));
+
+	xid = GetXid();
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+	pTcon = cifs_sb->tcon;
+
+	/* Unlink can be called from rename so we can not grab the sem here
+	   since we deadlock otherwise */
+/*	down(&direntry->d_sb->s_vfs_rename_sem);*/
+	full_path = build_path_from_dentry(direntry);
+/*	up(&direntry->d_sb->s_vfs_rename_sem);*/
+	if (full_path == NULL) {
+		FreeXid(xid);
+		return -ENOMEM;
+	}
+	rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls);
+
+	if (!rc) {
+		direntry->d_inode->i_nlink--;
+	} else if (rc == -ENOENT) {
+		d_drop(direntry);
+	} else if (rc == -ETXTBSY) {
+		int oplock = FALSE;
+		__u16 netfid;
+
+		rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
+				 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
+				 &netfid, &oplock, NULL, cifs_sb->local_nls);
+		if (rc==0) {
+			CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
+					      cifs_sb->local_nls);
+			CIFSSMBClose(xid, pTcon, netfid);
+			direntry->d_inode->i_nlink--;
+		}
+	} else if (rc == -EACCES) {
+		/* try only if r/o attribute set in local lookup data? */
+		pinfo_buf = kmalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
+		if (pinfo_buf) {
+			memset(pinfo_buf, 0, sizeof(FILE_BASIC_INFO));
+			/* ATTRS set to normal clears r/o bit */
+			pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
+			if (!(pTcon->ses->flags & CIFS_SES_NT4))
+				rc = CIFSSMBSetTimes(xid, pTcon, full_path,
+						     pinfo_buf,
+						     cifs_sb->local_nls);
+			else
+				rc = -EOPNOTSUPP;
+
+			if (rc == -EOPNOTSUPP) {
+				int oplock = FALSE;
+				__u16 netfid;
+			/*	rc = CIFSSMBSetAttrLegacy(xid, pTcon,
+							  full_path,
+							  (__u16)ATTR_NORMAL,
+							  cifs_sb->local_nls); 
+			   For some strange reason it seems that NT4 eats the
+			   old setattr call without actually setting the
+			   attributes so on to the third attempted workaround
+			   */
+
+			/* BB could scan to see if we already have it open
+			   and pass in pid of opener to function */
+				rc = CIFSSMBOpen(xid, pTcon, full_path,
+						 FILE_OPEN, SYNCHRONIZE |
+						 FILE_WRITE_ATTRIBUTES, 0,
+						 &netfid, &oplock, NULL,
+						 cifs_sb->local_nls);
+				if (rc==0) {
+					rc = CIFSSMBSetFileTimes(xid, pTcon,
+								 pinfo_buf,
+								 netfid);
+					CIFSSMBClose(xid, pTcon, netfid);
+				}
+			}
+			kfree(pinfo_buf);
+		}
+		if (rc==0) {
+			rc = CIFSSMBDelFile(xid, pTcon, full_path,
+					    cifs_sb->local_nls);
+			if (!rc) {
+				direntry->d_inode->i_nlink--;
+			} else if (rc == -ETXTBSY) {
+				int oplock = FALSE;
+				__u16 netfid;
+
+				rc = CIFSSMBOpen(xid, pTcon, full_path,
+						 FILE_OPEN, DELETE,
+						 CREATE_NOT_DIR |
+						 CREATE_DELETE_ON_CLOSE,
+						 &netfid, &oplock, NULL,
+						 cifs_sb->local_nls);
+				if (rc==0) {
+					CIFSSMBRenameOpenFile(xid, pTcon,
+						netfid, NULL,
+						cifs_sb->local_nls);
+					CIFSSMBClose(xid, pTcon, netfid);
+		                        direntry->d_inode->i_nlink--;
+				}
+			/* BB if rc = -ETXTBUSY goto the rename logic BB */
+			}
+		}
+	}
+	cifsInode = CIFS_I(direntry->d_inode);
+	cifsInode->time = 0;	/* will force revalidate to get info when
+				   needed */
+	direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
+		current_fs_time(inode->i_sb);
+	cifsInode = CIFS_I(inode);
+	cifsInode->time = 0;	/* force revalidate of dir as well */
+
+	kfree(full_path);
+	FreeXid(xid);
+	return rc;
+}
+
+int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
+{
+	int rc = 0;
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *pTcon;
+	char *full_path = NULL;
+	struct inode *newinode = NULL;
+
+	cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p ", mode, inode));
+
+	xid = GetXid();
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+	pTcon = cifs_sb->tcon;
+
+	down(&inode->i_sb->s_vfs_rename_sem);
+	full_path = build_path_from_dentry(direntry);
+	up(&inode->i_sb->s_vfs_rename_sem);
+	if (full_path == NULL) {
+		FreeXid(xid);
+		return -ENOMEM;
+	}
+	/* BB add setting the equivalent of mode via CreateX w/ACLs */
+	rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls);
+	if (rc) {
+		cFYI(1, ("cifs_mkdir returned 0x%x ", rc));
+		d_drop(direntry);
+	} else {
+		inode->i_nlink++;
+		if (pTcon->ses->capabilities & CAP_UNIX)
+			rc = cifs_get_inode_info_unix(&newinode, full_path,
+						      inode->i_sb,xid);
+		else
+			rc = cifs_get_inode_info(&newinode, full_path, NULL,
+						 inode->i_sb,xid);
+
+		direntry->d_op = &cifs_dentry_ops;
+		d_instantiate(direntry, newinode);
+		if (direntry->d_inode)
+			direntry->d_inode->i_nlink = 2;
+		if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
+			if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
+				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
+						    mode,
+						    (__u64)current->euid,
+						    (__u64)current->egid,
+						    0 /* dev_t */,
+						    cifs_sb->local_nls);
+			} else {
+				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
+						    mode, (__u64)-1,
+						    (__u64)-1, 0 /* dev_t */,
+						    cifs_sb->local_nls);
+			}
+		else {
+			/* BB to be implemented via Windows secrty descriptors
+			   eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
+						 -1, -1, local_nls); */
+		}
+	}
+	kfree(full_path);
+	FreeXid(xid);
+	return rc;
+}
+
+int cifs_rmdir(struct inode *inode, struct dentry *direntry)
+{
+	int rc = 0;
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *pTcon;
+	char *full_path = NULL;
+	struct cifsInodeInfo *cifsInode;
+
+	cFYI(1, (" cifs_rmdir, inode = 0x%p with ", inode));
+
+	xid = GetXid();
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+	pTcon = cifs_sb->tcon;
+
+	down(&inode->i_sb->s_vfs_rename_sem);
+	full_path = build_path_from_dentry(direntry);
+	up(&inode->i_sb->s_vfs_rename_sem);
+	if (full_path == NULL) {
+		FreeXid(xid);
+		return -ENOMEM;
+	}
+
+	rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls);
+
+	if (!rc) {
+		inode->i_nlink--;
+		i_size_write(direntry->d_inode,0);
+		direntry->d_inode->i_nlink = 0;
+	}
+
+	cifsInode = CIFS_I(direntry->d_inode);
+	cifsInode->time = 0;	/* force revalidate to go get info when
+				   needed */
+	direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
+		current_fs_time(inode->i_sb);
+
+	kfree(full_path);
+	FreeXid(xid);
+	return rc;
+}
+
+int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
+	struct inode *target_inode, struct dentry *target_direntry)
+{
+	char *fromName;
+	char *toName;
+	struct cifs_sb_info *cifs_sb_source;
+	struct cifs_sb_info *cifs_sb_target;
+	struct cifsTconInfo *pTcon;
+	int xid;
+	int rc = 0;
+
+	xid = GetXid();
+
+	cifs_sb_target = CIFS_SB(target_inode->i_sb);
+	cifs_sb_source = CIFS_SB(source_inode->i_sb);
+	pTcon = cifs_sb_source->tcon;
+
+	if (pTcon != cifs_sb_target->tcon) {
+		FreeXid(xid);
+		return -EXDEV;	/* BB actually could be allowed if same server,
+				   but different share.
+				   Might eventually add support for this */
+	}
+
+	/* we already  have the rename sem so we do not need to grab it again
+	   here to protect the path integrity */
+	fromName = build_path_from_dentry(source_direntry);
+	toName = build_path_from_dentry(target_direntry);
+	if ((fromName == NULL) || (toName == NULL)) {
+		rc = -ENOMEM;
+		goto cifs_rename_exit;
+	}
+
+	rc = CIFSSMBRename(xid, pTcon, fromName, toName,
+			   cifs_sb_source->local_nls);
+	if (rc == -EEXIST) {
+		/* check if they are the same file because rename of hardlinked
+		   files is a noop */
+		FILE_UNIX_BASIC_INFO *info_buf_source;
+		FILE_UNIX_BASIC_INFO *info_buf_target;
+
+		info_buf_source =
+			kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
+		if (info_buf_source != NULL) {
+			info_buf_target = info_buf_source + 1;
+			rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
+				info_buf_source, cifs_sb_source->local_nls);
+			if (rc == 0) {
+				rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
+						info_buf_target,
+						cifs_sb_target->local_nls);
+			}
+			if ((rc == 0) &&
+			    (info_buf_source->UniqueId ==
+			     info_buf_target->UniqueId)) {
+			/* do not rename since the files are hardlinked which
+			   is a noop */
+			} else {
+			/* we either can not tell the files are hardlinked
+			   (as with Windows servers) or files are not
+			   hardlinked so delete the target manually before
+			   renaming to follow POSIX rather than Windows
+			   semantics */
+				cifs_unlink(target_inode, target_direntry);
+				rc = CIFSSMBRename(xid, pTcon, fromName,
+						   toName,
+						   cifs_sb_source->local_nls);
+			}
+			kfree(info_buf_source);
+		} /* if we can not get memory just leave rc as EEXIST */
+	}
+
+	if (rc) {
+		cFYI(1, ("rename rc %d", rc));
+	}
+
+	if ((rc == -EIO) || (rc == -EEXIST)) {
+		int oplock = FALSE;
+		__u16 netfid;
+
+		/* BB FIXME Is Generic Read correct for rename? */
+		/* if renaming directory - we should not say CREATE_NOT_DIR,
+		   need to test renaming open directory, also GENERIC_READ
+		   might not right be right access to request */
+		rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
+				 CREATE_NOT_DIR, &netfid, &oplock, NULL,
+				 cifs_sb_source->local_nls);
+		if (rc==0) {
+			CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
+					      cifs_sb_source->local_nls);
+			CIFSSMBClose(xid, pTcon, netfid);
+		}
+	}
+
+cifs_rename_exit:
+	kfree(fromName);
+	kfree(toName);
+	FreeXid(xid);
+	return rc;
+}
+
+int cifs_revalidate(struct dentry *direntry)
+{
+	int xid;
+	int rc = 0;
+	char *full_path;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsInodeInfo *cifsInode;
+	loff_t local_size;
+	struct timespec local_mtime;
+	int invalidate_inode = FALSE;
+
+	if (direntry->d_inode == NULL)
+		return -ENOENT;
+
+	cifsInode = CIFS_I(direntry->d_inode);
+
+	if (cifsInode == NULL)
+		return -ENOENT;
+
+	/* no sense revalidating inode info on file that no one can write */
+	if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
+		return rc;
+
+	xid = GetXid();
+
+	cifs_sb = CIFS_SB(direntry->d_sb);
+
+	/* can not safely grab the rename sem here if rename calls revalidate
+	   since that would deadlock */
+	full_path = build_path_from_dentry(direntry);
+	if (full_path == NULL) {
+		FreeXid(xid);
+		return -ENOMEM;
+	}
+	cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
+		 "jiffies %ld", full_path, direntry->d_inode,
+		 direntry->d_inode->i_count.counter, direntry,
+		 direntry->d_time, jiffies));
+
+	if (cifsInode->time == 0) {
+		/* was set to zero previously to force revalidate */
+	} else if (time_before(jiffies, cifsInode->time + HZ) &&
+		   lookupCacheEnabled) {
+		if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
+		    (direntry->d_inode->i_nlink == 1)) {
+			kfree(full_path);
+			FreeXid(xid);
+			return rc;
+		} else {
+			cFYI(1, ("Have to revalidate file due to hardlinks"));
+		}
+	}
+
+	/* save mtime and size */
+	local_mtime = direntry->d_inode->i_mtime;
+	local_size = direntry->d_inode->i_size;
+
+	if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
+		rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
+					      direntry->d_sb,xid);
+		if (rc) {
+			cFYI(1, ("error on getting revalidate info %d", rc));
+/*			if (rc != -ENOENT)
+				rc = 0; */	/* BB should we cache info on
+						   certain errors? */
+		}
+	} else {
+		rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
+					 direntry->d_sb,xid);
+		if (rc) {
+			cFYI(1, ("error on getting revalidate info %d", rc));
+/*			if (rc != -ENOENT)
+				rc = 0; */	/* BB should we cache info on
+						   certain errors? */
+		}
+	}
+	/* should we remap certain errors, access denied?, to zero */
+
+	/* if not oplocked, we invalidate inode pages if mtime or file size
+	   had changed on server */
+
+	if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) && 
+	    (local_size == direntry->d_inode->i_size)) {
+		cFYI(1, ("cifs_revalidate - inode unchanged"));
+	} else {
+		/* file may have changed on server */
+		if (cifsInode->clientCanCacheRead) {
+			/* no need to invalidate inode pages since we were the
+			   only ones who could have modified the file and the
+			   server copy is staler than ours */
+		} else {
+			invalidate_inode = TRUE;
+		}
+	}
+
+	/* can not grab this sem since kernel filesys locking documentation
+	   indicates i_sem may be taken by the kernel on lookup and rename
+	   which could deadlock if we grab the i_sem here as well */
+/*	down(&direntry->d_inode->i_sem);*/
+	/* need to write out dirty pages here  */
+	if (direntry->d_inode->i_mapping) {
+		/* do we need to lock inode until after invalidate completes
+		   below? */
+		filemap_fdatawrite(direntry->d_inode->i_mapping);
+	}
+	if (invalidate_inode) {
+		if (direntry->d_inode->i_mapping)
+			filemap_fdatawait(direntry->d_inode->i_mapping);
+		/* may eventually have to do this for open files too */
+		if (list_empty(&(cifsInode->openFileList))) {
+			/* Has changed on server - flush read ahead pages */
+			cFYI(1, ("Invalidating read ahead data on "
+				 "closed file"));
+			invalidate_remote_inode(direntry->d_inode);
+		}
+	}
+/*	up(&direntry->d_inode->i_sem); */
+	
+	kfree(full_path);
+	FreeXid(xid);
+	return rc;
+}
+
+int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
+	struct kstat *stat)
+{
+	int err = cifs_revalidate(dentry);
+	if (!err)
+		generic_fillattr(dentry->d_inode, stat);
+	return err;
+}
+
+static int cifs_truncate_page(struct address_space *mapping, loff_t from)
+{
+	pgoff_t index = from >> PAGE_CACHE_SHIFT;
+	unsigned offset = from & (PAGE_CACHE_SIZE - 1);
+	struct page *page;
+	char *kaddr;
+	int rc = 0;
+
+	page = grab_cache_page(mapping, index);
+	if (!page)
+		return -ENOMEM;
+
+	kaddr = kmap_atomic(page, KM_USER0);
+	memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
+	flush_dcache_page(page);
+	kunmap_atomic(kaddr, KM_USER0);
+	unlock_page(page);
+	page_cache_release(page);
+	return rc;
+}
+
+int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
+{
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *pTcon;
+	char *full_path = NULL;
+	int rc = -EACCES;
+	int found = FALSE;
+	struct cifsFileInfo *open_file = NULL;
+	FILE_BASIC_INFO time_buf;
+	int set_time = FALSE;
+	__u64 mode = 0xFFFFFFFFFFFFFFFFULL;
+	__u64 uid = 0xFFFFFFFFFFFFFFFFULL;
+	__u64 gid = 0xFFFFFFFFFFFFFFFFULL;
+	struct cifsInodeInfo *cifsInode;
+	struct list_head *tmp;
+
+	xid = GetXid();
+
+	cFYI(1, (" In cifs_setattr, name = %s attrs->iavalid 0x%x ",
+		 direntry->d_name.name, attrs->ia_valid));
+	cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
+	pTcon = cifs_sb->tcon;
+
+	down(&direntry->d_sb->s_vfs_rename_sem);
+	full_path = build_path_from_dentry(direntry);
+	up(&direntry->d_sb->s_vfs_rename_sem);
+	if (full_path == NULL) {
+		FreeXid(xid);
+		return -ENOMEM;
+	}
+	cifsInode = CIFS_I(direntry->d_inode);
+
+	/* BB check if we need to refresh inode from server now ? BB */
+
+	/* need to flush data before changing file size on server */
+	filemap_fdatawrite(direntry->d_inode->i_mapping);
+	filemap_fdatawait(direntry->d_inode->i_mapping);
+
+	if (attrs->ia_valid & ATTR_SIZE) {
+		read_lock(&GlobalSMBSeslock);
+		/* To avoid spurious oplock breaks from server, in the case of
+		   inodes that we already have open, avoid doing path based
+		   setting of file size if we can do it by handle.
+		   This keeps our caching token (oplock) and avoids timeouts
+		   when the local oplock break takes longer to flush
+		   writebehind data than the SMB timeout for the SetPathInfo
+		   request would allow */
+		list_for_each(tmp, &cifsInode->openFileList) {
+			open_file = list_entry(tmp, struct cifsFileInfo,
+					       flist);
+			/* We check if file is open for writing first */
+			if ((open_file->pfile) &&
+			    ((open_file->pfile->f_flags & O_RDWR) ||
+			    (open_file->pfile->f_flags & O_WRONLY))) {
+				if (open_file->invalidHandle == FALSE) {
+					/* we found a valid, writeable network
+					   file handle to use to try to set the
+					   file size */
+					__u16 nfid = open_file->netfid;
+					__u32 npid = open_file->pid;
+					read_unlock(&GlobalSMBSeslock);
+					found = TRUE;
+					rc = CIFSSMBSetFileSize(xid, pTcon,
+						attrs->ia_size, nfid, npid,
+						FALSE);
+					cFYI(1, ("SetFileSize by handle "
+						 "(setattrs) rc = %d", rc));
+					/* Do not need reopen and retry on
+					   EAGAIN since we will retry by
+					   pathname below */
+
+					/* now that we found one valid file
+					   handle no sense continuing to loop
+					   trying others, so break here */
+					break;
+				}
+			}
+		}
+		if (found == FALSE)
+			read_unlock(&GlobalSMBSeslock);
+
+		if (rc != 0) {
+			/* Set file size by pathname rather than by handle
+			   either because no valid, writeable file handle for
+			   it was found or because there was an error setting
+			   it by handle */
+			rc = CIFSSMBSetEOF(xid, pTcon, full_path,
+					   attrs->ia_size, FALSE,
+					   cifs_sb->local_nls);
+			cFYI(1, (" SetEOF by path (setattrs) rc = %d", rc));
+		}
+
+		/* Server is ok setting allocation size implicitly - no need
+		   to call:
+		CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
+			 cifs_sb->local_nls);
+		   */
+
+		if (rc == 0) {
+			rc = vmtruncate(direntry->d_inode, attrs->ia_size);
+			cifs_truncate_page(direntry->d_inode->i_mapping,
+					   direntry->d_inode->i_size);
+		}
+	}
+	if (attrs->ia_valid & ATTR_UID) {
+		cFYI(1, (" CIFS - UID changed to %d", attrs->ia_uid));
+		uid = attrs->ia_uid;
+		/* entry->uid = cpu_to_le16(attr->ia_uid); */
+	}
+	if (attrs->ia_valid & ATTR_GID) {
+		cFYI(1, (" CIFS - GID changed to %d", attrs->ia_gid));
+		gid = attrs->ia_gid;
+		/* entry->gid = cpu_to_le16(attr->ia_gid); */
+	}
+
+	time_buf.Attributes = 0;
+	if (attrs->ia_valid & ATTR_MODE) {
+		cFYI(1, (" CIFS - Mode changed to 0x%x", attrs->ia_mode));
+		mode = attrs->ia_mode;
+		/* entry->mode = cpu_to_le16(attr->ia_mode); */
+	}
+
+	if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
+	    && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
+		rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
+					 0 /* dev_t */, cifs_sb->local_nls);
+	else if (attrs->ia_valid & ATTR_MODE) {
+		if ((mode & S_IWUGO) == 0) /* not writeable */ {
+			if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0)
+				time_buf.Attributes =
+					cpu_to_le32(cifsInode->cifsAttrs |
+						    ATTR_READONLY);
+		} else if ((mode & S_IWUGO) == S_IWUGO) {
+			if (cifsInode->cifsAttrs & ATTR_READONLY)
+				time_buf.Attributes =
+					cpu_to_le32(cifsInode->cifsAttrs &
+						    (~ATTR_READONLY));
+		}
+		/* BB to be implemented -
+		   via Windows security descriptors or streams */
+		/* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
+				      cifs_sb->local_nls); */
+	}
+
+	if (attrs->ia_valid & ATTR_ATIME) {
+		set_time = TRUE;
+		time_buf.LastAccessTime =
+		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
+	} else
+		time_buf.LastAccessTime = 0;
+
+	if (attrs->ia_valid & ATTR_MTIME) {
+		set_time = TRUE;
+		time_buf.LastWriteTime =
+		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
+	} else
+		time_buf.LastWriteTime = 0;
+
+	if (attrs->ia_valid & ATTR_CTIME) {
+		set_time = TRUE;
+		cFYI(1, (" CIFS - CTIME changed ")); /* BB probably no need */
+		time_buf.ChangeTime =
+		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
+	} else
+		time_buf.ChangeTime = 0;
+
+	if (set_time || time_buf.Attributes) {
+		/* BB what if setting one attribute fails (such as size) but
+		   time setting works? */
+		time_buf.CreationTime = 0;	/* do not change */
+		/* In the future we should experiment - try setting timestamps
+		   via Handle (SetFileInfo) instead of by path */
+		if (!(pTcon->ses->flags & CIFS_SES_NT4))
+			rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
+					     cifs_sb->local_nls);
+		else
+			rc = -EOPNOTSUPP;
+
+		if (rc == -EOPNOTSUPP) {
+			int oplock = FALSE;
+			__u16 netfid;
+
+			cFYI(1, ("calling SetFileInfo since SetPathInfo for "
+				 "times not supported by this server"));
+			/* BB we could scan to see if we already have it open
+			   and pass in pid of opener to function */
+			rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
+					 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
+					 CREATE_NOT_DIR, &netfid, &oplock,
+					 NULL, cifs_sb->local_nls);
+			if (rc==0) {
+				rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
+							 netfid);
+				CIFSSMBClose(xid, pTcon, netfid);
+			} else {
+			/* BB For even older servers we could convert time_buf
+			   into old DOS style which uses two second
+			   granularity */
+
+			/* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
+        	        		&time_buf, cifs_sb->local_nls); */
+			}
+		}
+	}
+
+	/* do not need local check to inode_check_ok since the server does
+	   that */
+	if (!rc)
+		rc = inode_setattr(direntry->d_inode, attrs);
+	kfree(full_path);
+	FreeXid(xid);
+	return rc;
+}
+
+void cifs_delete_inode(struct inode *inode)
+{
+	cFYI(1, ("In cifs_delete_inode, inode = 0x%p ", inode));
+	/* may have to add back in if and when safe distributed caching of
+	   directories added e.g. via FindNotify */
+}