vserver 2.0 rc7
[linux-2.6.git] / fs / cifs / readdir.c
index 0fe23d2..2255771 100644 (file)
@@ -3,7 +3,7 @@
  *
  *   Directory search handling
  * 
- *   Copyright (C) International Business Machines  Corp., 2004
+ *   Copyright (C) International Business Machines  Corp., 2004, 2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
 #include "cifs_unicode.h"
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
-
-extern int CIFSFindFirst2(const int xid, struct cifsTconInfo *tcon,
-            const char *searchName, const struct nls_table *nls_codepage,
-            __u16 *searchHandle, struct cifs_search_info * psrch_inf);
-
-extern int CIFSFindNext2(const int xid, struct cifsTconInfo *tcon,
-            __u16 searchHandle, struct cifs_search_info * psrch_inf);
-
-extern int construct_dentry(struct qstr *qstring, struct file *file,
-                struct inode **ptmp_inode, struct dentry **pnew_dentry);
-
-extern void fill_in_inode(struct inode *tmp_inode,
-             FILE_DIRECTORY_INFO * pfindData, int *pobject_type);
-
-extern void unix_fill_in_inode(struct inode *tmp_inode,
-             FILE_UNIX_INFO * pfindData, int *pobject_type);
-
+#include "cifsfs.h"
 
 /* BB fixme - add debug wrappers around this function to disable it fixme BB */
-/* static void dump_cifs_file_struct(struct file * file, char * label)
+/* static void dump_cifs_file_struct(struct file *file, char *label)
 {
        struct cifsFileInfo * cf;
 
        if(file) {
-               cf = (struct cifsFileInfo *)file->private_data;
+               cf = file->private_data;
                if(cf == NULL) {
                        cFYI(1,("empty cifs private file data"));
                        return;
@@ -71,7 +55,271 @@ extern void unix_fill_in_inode(struct inode *tmp_inode,
        }
 } */
 
-static int initiate_cifs_search(const int xid, struct file * file)
+/* Returns one if new inode created (which therefore needs to be hashed) */
+/* Might check in the future if inode number changed so we can rehash inode */
+static int construct_dentry(struct qstr *qstring, struct file *file,
+       struct inode **ptmp_inode, struct dentry **pnew_dentry)
+{
+       struct dentry *tmp_dentry;
+       struct cifs_sb_info *cifs_sb;
+       struct cifsTconInfo *pTcon;
+       int rc = 0;
+
+       cFYI(1, ("For %s", qstring->name));
+       cifs_sb = CIFS_SB(file->f_dentry->d_sb);
+       pTcon = cifs_sb->tcon;
+
+       qstring->hash = full_name_hash(qstring->name, qstring->len);
+       tmp_dentry = d_lookup(file->f_dentry, qstring);
+       if (tmp_dentry) {
+               cFYI(0, ("existing dentry with inode 0x%p", tmp_dentry->d_inode));
+               *ptmp_inode = tmp_dentry->d_inode;
+/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
+               if(*ptmp_inode == NULL) {
+                       *ptmp_inode = new_inode(file->f_dentry->d_sb);
+                       if(*ptmp_inode == NULL)
+                               return rc;
+                       rc = 1;
+                       d_instantiate(tmp_dentry, *ptmp_inode);
+               }
+       } else {
+               tmp_dentry = d_alloc(file->f_dentry, qstring);
+               if(tmp_dentry == NULL) {
+                       cERROR(1,("Failed allocating dentry"));
+                       *ptmp_inode = NULL;
+                       return rc;
+               }
+
+               *ptmp_inode = new_inode(file->f_dentry->d_sb);
+               tmp_dentry->d_op = &cifs_dentry_ops;
+               if(*ptmp_inode == NULL)
+                       return rc;
+               rc = 1;
+               d_instantiate(tmp_dentry, *ptmp_inode);
+               d_rehash(tmp_dentry);
+       }
+
+       tmp_dentry->d_time = jiffies;
+       *pnew_dentry = tmp_dentry;
+       return rc;
+}
+
+static void fill_in_inode(struct inode *tmp_inode,
+       FILE_DIRECTORY_INFO *pfindData, int *pobject_type, int isNewInode)
+{
+       loff_t local_size;
+       struct timespec local_mtime;
+
+       struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
+       struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
+       __u32 attr = le32_to_cpu(pfindData->ExtFileAttributes);
+       __u64 allocation_size = le64_to_cpu(pfindData->AllocationSize);
+       __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
+
+       cifsInfo->cifsAttrs = attr;
+       cifsInfo->time = jiffies;
+
+       /* save mtime and size */
+       local_mtime = tmp_inode->i_mtime;
+       local_size  = tmp_inode->i_size;
+
+       /* Linux can not store file creation time unfortunately so ignore it */
+       tmp_inode->i_atime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
+       tmp_inode->i_mtime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
+       tmp_inode->i_ctime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
+       /* treat dos attribute of read-only as read-only mode bit e.g. 555? */
+       /* 2767 perms - indicate mandatory locking */
+               /* BB fill in uid and gid here? with help from winbind? 
+                  or retrieve from NTFS stream extended attribute */
+       if (atomic_read(&cifsInfo->inUse) == 0) {
+               tmp_inode->i_uid = cifs_sb->mnt_uid;
+               tmp_inode->i_gid = cifs_sb->mnt_gid;
+               /* set default mode. will override for dirs below */
+               tmp_inode->i_mode = cifs_sb->mnt_file_mode;
+       }
+
+       if (attr & ATTR_DIRECTORY) {
+               *pobject_type = DT_DIR;
+               /* override default perms since we do not lock dirs */
+               if(atomic_read(&cifsInfo->inUse) == 0) {
+                       tmp_inode->i_mode = cifs_sb->mnt_dir_mode;
+               }
+               tmp_inode->i_mode |= S_IFDIR;
+/* we no longer mark these because we could not follow them */
+/*        } else if (attr & ATTR_REPARSE) {
+                *pobject_type = DT_LNK;
+                tmp_inode->i_mode |= S_IFLNK; */
+       } else {
+               *pobject_type = DT_REG;
+               tmp_inode->i_mode |= S_IFREG;
+               if (attr & ATTR_READONLY)
+                       tmp_inode->i_mode &= ~(S_IWUGO);
+       } /* could add code here - to validate if device or weird share type? */
+
+       /* can not fill in nlink here as in qpathinfo version and Unx search */
+       if (atomic_read(&cifsInfo->inUse) == 0) {
+               atomic_set(&cifsInfo->inUse, 1);
+       }
+
+       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(tmp_inode, end_of_file);
+
+       /* 512 bytes (2**9) is the fake blocksize that must be used */
+       /* for this calculation, even though the reported blocksize is larger */
+               tmp_inode->i_blocks = (512 - 1 + allocation_size) >> 9;
+       }
+
+       if (allocation_size < end_of_file)
+               cFYI(1, ("May be sparse file, allocation less than file size"));
+       cFYI(1,
+            ("File Size %ld and blocks %ld and blocksize %ld",
+             (unsigned long)tmp_inode->i_size, tmp_inode->i_blocks,
+             tmp_inode->i_blksize));
+       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;
+               else
+                       tmp_inode->i_fop = &cifs_file_ops;
+               tmp_inode->i_data.a_ops = &cifs_addr_ops;
+
+               if(isNewInode)
+                       return; /* No sense invalidating pages for new inode since we
+                                          have not started caching readahead file data yet */
+
+               if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
+                       (local_size == tmp_inode->i_size)) {
+                       cFYI(1, ("inode exists but unchanged"));
+               } else {
+                       /* file may have changed on server */
+                       cFYI(1, ("invalidate inode, readdir detected change"));
+                       invalidate_remote_inode(tmp_inode);
+               }
+       } else if (S_ISDIR(tmp_inode->i_mode)) {
+               cFYI(1, ("Directory inode"));
+               tmp_inode->i_op = &cifs_dir_inode_ops;
+               tmp_inode->i_fop = &cifs_dir_ops;
+       } else if (S_ISLNK(tmp_inode->i_mode)) {
+               cFYI(1, ("Symbolic Link inode"));
+               tmp_inode->i_op = &cifs_symlink_inode_ops;
+       } else {
+               cFYI(1, ("Init special inode"));
+               init_special_inode(tmp_inode, tmp_inode->i_mode,
+                                  tmp_inode->i_rdev);
+       }
+}
+
+static void unix_fill_in_inode(struct inode *tmp_inode,
+       FILE_UNIX_INFO *pfindData, int *pobject_type, int isNewInode)
+{
+       loff_t local_size;
+       struct timespec local_mtime;
+
+       struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
+       struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
+
+       __u32 type = le32_to_cpu(pfindData->Type);
+       __u64 num_of_bytes = le64_to_cpu(pfindData->NumOfBytes);
+       __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
+       cifsInfo->time = jiffies;
+       atomic_inc(&cifsInfo->inUse);
+
+       /* save mtime and size */
+       local_mtime = tmp_inode->i_mtime;
+       local_size  = tmp_inode->i_size;
+
+       tmp_inode->i_atime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
+       tmp_inode->i_mtime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastModificationTime));
+       tmp_inode->i_ctime =
+           cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastStatusChange));
+
+       tmp_inode->i_mode = le64_to_cpu(pfindData->Permissions);
+       if (type == UNIX_FILE) {
+               *pobject_type = DT_REG;
+               tmp_inode->i_mode |= S_IFREG;
+       } else if (type == UNIX_SYMLINK) {
+               *pobject_type = DT_LNK;
+               tmp_inode->i_mode |= S_IFLNK;
+       } else if (type == UNIX_DIR) {
+               *pobject_type = DT_DIR;
+               tmp_inode->i_mode |= S_IFDIR;
+       } else if (type == UNIX_CHARDEV) {
+               *pobject_type = DT_CHR;
+               tmp_inode->i_mode |= S_IFCHR;
+               tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
+                               le64_to_cpu(pfindData->DevMinor) & MINORMASK);
+       } else if (type == UNIX_BLOCKDEV) {
+               *pobject_type = DT_BLK;
+               tmp_inode->i_mode |= S_IFBLK;
+               tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
+                               le64_to_cpu(pfindData->DevMinor) & MINORMASK);
+       } else if (type == UNIX_FIFO) {
+               *pobject_type = DT_FIFO;
+               tmp_inode->i_mode |= S_IFIFO;
+       } else if (type == UNIX_SOCKET) {
+               *pobject_type = DT_SOCK;
+               tmp_inode->i_mode |= S_IFSOCK;
+       }
+
+       tmp_inode->i_uid = le64_to_cpu(pfindData->Uid);
+       tmp_inode->i_gid = le64_to_cpu(pfindData->Gid);
+       tmp_inode->i_nlink = le64_to_cpu(pfindData->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(tmp_inode,end_of_file);
+
+       /* 512 bytes (2**9) is the fake blocksize that must be used */
+       /* for this calculation, not the real blocksize */
+               tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
+       }
+
+       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;
+               else
+                       tmp_inode->i_fop = &cifs_file_ops;
+               tmp_inode->i_data.a_ops = &cifs_addr_ops;
+
+               if(isNewInode)
+                       return; /* No sense invalidating pages for new inode since we
+                                          have not started caching readahead file data yet */
+
+               if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
+                       (local_size == tmp_inode->i_size)) {
+                       cFYI(1, ("inode exists but unchanged"));
+               } else {
+                       /* file may have changed on server */
+                       cFYI(1, ("invalidate inode, readdir detected change"));
+                       invalidate_remote_inode(tmp_inode);
+               }
+       } else if (S_ISDIR(tmp_inode->i_mode)) {
+               cFYI(1, ("Directory inode"));
+               tmp_inode->i_op = &cifs_dir_inode_ops;
+               tmp_inode->i_fop = &cifs_dir_ops;
+       } else if (S_ISLNK(tmp_inode->i_mode)) {
+               cFYI(1, ("Symbolic Link inode"));
+               tmp_inode->i_op = &cifs_symlink_inode_ops;
+/* tmp_inode->i_fop = *//* do not need to set to anything */
+       } else {
+               cFYI(1, ("Special inode")); 
+               init_special_inode(tmp_inode, tmp_inode->i_mode,
+                                  tmp_inode->i_rdev);
+       }
+}
+
+static int initiate_cifs_search(const int xid, struct file *file)
 {
        int rc = 0;
        char * full_path;
@@ -89,10 +337,13 @@ static int initiate_cifs_search(const int xid, struct file * file)
        } else {
                memset(file->private_data,0,sizeof(struct cifsFileInfo));
        }
-       cifsFile = (struct cifsFileInfo *)file->private_data;
+       cifsFile = file->private_data;
        cifsFile->invalidHandle = TRUE;
        cifsFile->srch_inf.endOfSearch = FALSE;
 
+       if(file->f_dentry == NULL)
+               return -ENOENT;
+
        cifs_sb = CIFS_SB(file->f_dentry->d_sb);
        if(cifs_sb == NULL)
                return -EINVAL;
@@ -101,39 +352,42 @@ static int initiate_cifs_search(const int xid, struct file * file)
        if(pTcon == NULL)
                return -EINVAL;
 
-       if(file->f_dentry == NULL)
-               return -ENOENT;
-
        down(&file->f_dentry->d_sb->s_vfs_rename_sem);
-       full_path = build_wildcard_path_from_dentry(file->f_dentry);
+       full_path = build_path_from_dentry(file->f_dentry);
        up(&file->f_dentry->d_sb->s_vfs_rename_sem);
 
        if(full_path == NULL) {
                return -ENOMEM;
        }
 
-       cFYI(1, ("Full path: %s start at: %lld ", full_path, file->f_pos));
+       cFYI(1, ("Full path: %s start at: %lld", full_path, file->f_pos));
 
+ffirst_retry:
        /* test for Unix extensions */
        if (pTcon->ses->capabilities & CAP_UNIX) {
-               cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
+               cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX; 
        } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
                cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
        } else /* not srvinos - BB fixme add check for backlevel? */ {
                cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
        }
 
-       rc = CIFSFindFirst2(xid, pTcon,full_path,cifs_sb->local_nls, 
-               &cifsFile->netfid, &cifsFile->srch_inf); 
+       rc = CIFSFindFirst(xid, pTcon,full_path,cifs_sb->local_nls,
+               &cifsFile->netfid, &cifsFile->srch_inf,
+               cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
        if(rc == 0)
                cifsFile->invalidHandle = FALSE;
-       if(full_path)
-               kfree(full_path);
+       if((rc == -EOPNOTSUPP) && 
+               (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
+               cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
+               goto ffirst_retry;
+       }
+       kfree(full_path);
        return rc;
 }
 
 /* return length of unicode string in bytes */
-static int cifs_unicode_bytelen(char * str)
+static int cifs_unicode_bytelen(char *str)
 {
        int len;
        __le16 * ustr = (__le16 *)str;
@@ -146,7 +400,7 @@ static int cifs_unicode_bytelen(char * str)
        return len << 1;
 }
 
-static char * nxt_dir_entry(char * old_entry, char * end_of_smb)
+static char *nxt_dir_entry(char *old_entry, char *end_of_smb)
 {
        char * new_entry;
        FILE_DIRECTORY_INFO * pDirInfo = (FILE_DIRECTORY_INFO *)old_entry;
@@ -155,10 +409,15 @@ static char * nxt_dir_entry(char * old_entry, char * end_of_smb)
        cFYI(1,("new entry %p old entry %p",new_entry,old_entry));
        /* validate that new_entry is not past end of SMB */
        if(new_entry >= end_of_smb) {
-               cFYI(1,("search entry %p began after end of SMB %p old entry %p",
-                       new_entry,end_of_smb,old_entry)); 
+               cERROR(1,
+                     ("search entry %p began after end of SMB %p old entry %p",
+                       new_entry, end_of_smb, old_entry)); 
                return NULL;
-       } else
+       } else if (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb) {
+               cERROR(1,("search entry %p extends after end of SMB %p",
+                       new_entry, end_of_smb));
+               return NULL;
+       } else 
                return new_entry;
 
 }
@@ -166,7 +425,7 @@ static char * nxt_dir_entry(char * old_entry, char * end_of_smb)
 #define UNICODE_DOT cpu_to_le16(0x2e)
 
 /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */
-static int cifs_entry_is_dot(char * current_entry, struct cifsFileInfo * cfile)
+static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
 {
        int rc = 0;
        char * filename = NULL;
@@ -238,14 +497,14 @@ static int cifs_entry_is_dot(char * current_entry, struct cifsFileInfo * cfile)
    assume that they are located in the findfirst return buffer.*/
 /* We start counting in the buffer with entry 2 and increment for every
    entry (do not increment for . or .. entry) */
-static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon, 
-               struct file * file, char ** ppCurrentEntry,int * num_to_ret) 
+static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
+       struct file *file, char **ppCurrentEntry, int *num_to_ret) 
 {
        int rc = 0;
        int pos_in_buf = 0;
        loff_t first_entry_in_buffer;
        loff_t index_to_find = file->f_pos;
-       struct cifsFileInfo * cifsFile = (struct cifsFileInfo *)file->private_data;
+       struct cifsFileInfo * cifsFile = file->private_data;
        /* check if index in the buffer */
        
        if((cifsFile == NULL) || (ppCurrentEntry == NULL) || (num_to_ret == NULL))
@@ -261,12 +520,10 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon,
                cFYI(1,("search backing up - close and restart search"));
                cifsFile->invalidHandle = TRUE;
                CIFSFindClose(xid, pTcon, cifsFile->netfid);
-               if(cifsFile->search_resume_name) {
-                       kfree(cifsFile->search_resume_name);
-                       cifsFile->search_resume_name = NULL;
-               }
+               kfree(cifsFile->search_resume_name);
+               cifsFile->search_resume_name = NULL;
                if(cifsFile->srch_inf.ntwrk_buf_start) {
-                       cFYI(1,("freeing SMB ff cache buf on search rewind")); 
+                       cFYI(1,("freeing SMB ff cache buf on search rewind"));
                        cifs_buf_release(cifsFile->srch_inf.ntwrk_buf_start);
                }
                rc = initiate_cifs_search(xid,file);
@@ -279,7 +536,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon,
        while((index_to_find >= cifsFile->srch_inf.index_of_last_entry) && 
              (rc == 0) && (cifsFile->srch_inf.endOfSearch == FALSE)){
                cFYI(1,("calling findnext2"));
-               rc = CIFSFindNext2(xid,pTcon,cifsFile->netfid, &cifsFile->srch_inf);
+               rc = CIFSFindNext(xid,pTcon,cifsFile->netfid, &cifsFile->srch_inf);
                if(rc)
                        return -ENOENT;
        }
@@ -289,10 +546,11 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon,
                int i;
                char * current_entry;
                char * end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + 
-                       smbCalcSize((struct smb_hdr *)cifsFile->srch_inf.ntwrk_buf_start);
+                       smbCalcSize((struct smb_hdr *)
+                               cifsFile->srch_inf.ntwrk_buf_start);
 /*     dump_cifs_file_struct(file,"found entry in fce "); */
-               first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry -
-                       cifsFile->srch_inf.entries_in_buffer;
+               first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry
+                                       - cifsFile->srch_inf.entries_in_buffer;
                pos_in_buf = index_to_find - first_entry_in_buffer;
                cFYI(1,("found entry - pos_in_buf %d",pos_in_buf)); 
                current_entry = cifsFile->srch_inf.srch_entries_start;
@@ -311,7 +569,10 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon,
                        current_entry = nxt_dir_entry(current_entry,end_of_smb);
                }
                if((current_entry == NULL) && (i < pos_in_buf)) {
-                       cERROR(1,("reached end of buf searching for pos in buf %d index to find %lld rc %d",pos_in_buf,index_to_find,rc)); /* BB removeme BB */
+                       /* BB fixme - check if we should flag this error */
+                       cERROR(1,("reached end of buf searching for pos in buf"
+                         " %d index to find %lld rc %d",
+                         pos_in_buf,index_to_find,rc));
                }
                rc = 0;
                *ppCurrentEntry = current_entry;
@@ -331,13 +592,14 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo * pTcon,
 }
 
 /* inode num, inode type and filename returned */
-static int cifs_get_name_from_search_buf(struct qstr * pqst,char * current_entry,
-                       __u16 level,unsigned int unicode,struct nls_table * nlt,
-                       ino_t * pinum)
+static int cifs_get_name_from_search_buf(struct qstr *pqst,
+       char *current_entry, __u16 level, unsigned int unicode,
+       struct cifs_sb_info * cifs_sb, ino_t *pinum)
 {
        int rc = 0;
        unsigned int len = 0;
        char * filename;
+       struct nls_table * nlt = cifs_sb->local_nls;
 
        *pinum = 0;
 
@@ -353,7 +615,8 @@ static int cifs_get_name_from_search_buf(struct qstr * pqst,char * current_entry
                }
 
                /* BB fixme - hash low and high 32 bits if not 64 bit arch BB fixme */
-               *pinum = pFindData->UniqueId;
+               if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
+                       *pinum = pFindData->UniqueId;
        } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) {
                FILE_DIRECTORY_INFO * pFindData = 
                        (FILE_DIRECTORY_INFO *)current_entry;
@@ -382,7 +645,12 @@ static int cifs_get_name_from_search_buf(struct qstr * pqst,char * current_entry
        if(unicode) {
                /* BB fixme - test with long names */
                /* Note converted filename can be longer than in unicode */
-               pqst->len = cifs_strfromUCS_le((char *)pqst->name,(wchar_t *)filename,len/2,nlt);
+               if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
+                       pqst->len = cifs_convertUCSpath((char *)pqst->name,
+                                       (__le16 *)filename, len/2, nlt);
+               else
+                       pqst->len = cifs_strfromUCS_le((char *)pqst->name,
+                                       (wchar_t *)filename,len/2,nlt);
        } else {
                pqst->name = filename;
                pqst->len = len;
@@ -392,10 +660,8 @@ static int cifs_get_name_from_search_buf(struct qstr * pqst,char * current_entry
        return rc;
 }
 
-
-static int
-cifs_filldir2(char * pfindEntry, struct file *file, 
-                         filldir_t filldir, void *direntry,char * scratch_buf)
+static int cifs_filldir(char *pfindEntry, struct file *file,
+       filldir_t filldir, void *direntry, char *scratch_buf)
 {
        int rc = 0;
        struct qstr qstring;
@@ -425,7 +691,7 @@ cifs_filldir2(char * pfindEntry, struct file *file,
        qstring.name = scratch_buf;
        rc = cifs_get_name_from_search_buf(&qstring,pfindEntry,
                        pCifsF->srch_inf.info_level,
-                       pCifsF->srch_inf.unicode,cifs_sb->local_nls,
+                       pCifsF->srch_inf.unicode,cifs_sb,
                        &inum /* returned */);
 
        if(rc)
@@ -444,10 +710,15 @@ cifs_filldir2(char * pfindEntry, struct file *file,
                insert_inode_hash(tmp_inode);
        }
 
+       /* we pass in rc below, indicating whether it is a new inode,
+          so we can figure out whether to invalidate the inode cached
+          data if the file has changed */
        if(pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
-               unix_fill_in_inode(tmp_inode,(FILE_UNIX_INFO *)pfindEntry,&obj_type);
+               unix_fill_in_inode(tmp_inode,
+                                  (FILE_UNIX_INFO *)pfindEntry,&obj_type, rc);
        } else {
-               fill_in_inode(tmp_inode,(FILE_DIRECTORY_INFO *)pfindEntry,&obj_type);
+               fill_in_inode(tmp_inode,
+                             (FILE_DIRECTORY_INFO *)pfindEntry,&obj_type, rc);
        }
        
        rc = filldir(direntry,qstring.name,qstring.len,file->f_pos,tmp_inode->i_ino,obj_type);
@@ -459,7 +730,8 @@ cifs_filldir2(char * pfindEntry, struct file *file,
        return rc;
 }
 
-int cifs_save_resume_key(const char * current_entry,struct cifsFileInfo * cifsFile)
+static int cifs_save_resume_key(const char *current_entry,
+       struct cifsFileInfo *cifsFile)
 {
        int rc = 0;
        unsigned int len = 0;
@@ -515,7 +787,7 @@ int cifs_save_resume_key(const char * current_entry,struct cifsFileInfo * cifsFi
        return rc;
 }
 
-int cifs_readdir2(struct file *file, void *direntry, filldir_t filldir)
+int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
 {
        int rc = 0;
        int xid,i;
@@ -579,7 +851,7 @@ int cifs_readdir2(struct file *file, void *direntry, filldir_t filldir)
                        FreeXid(xid);
                        return rc;
                }
-               cifsFile = (struct cifsFileInfo *) file->private_data;
+               cifsFile = file->private_data;
                if (cifsFile->srch_inf.endOfSearch) {
                        if(cifsFile->srch_inf.emptyDir) {
                                cFYI(1, ("End of search, empty dir"));
@@ -590,11 +862,10 @@ int cifs_readdir2(struct file *file, void *direntry, filldir_t filldir)
                        cifsFile->invalidHandle = TRUE;
                        CIFSFindClose(xid, pTcon, cifsFile->netfid);
                } 
-               if(cifsFile->search_resume_name) {
-                       kfree(cifsFile->search_resume_name);
-                       cifsFile->search_resume_name = NULL;
-               } */
-/* BB account for . and .. in f_pos */
+               kfree(cifsFile->search_resume_name);
+               cifsFile->search_resume_name = NULL; */
+
+               /* BB account for . and .. in f_pos as special case */
                /* dump_cifs_file_struct(file, "rdir after default ");*/
 
                rc = find_cifs_entry(xid,pTcon, file,
@@ -610,33 +881,34 @@ int cifs_readdir2(struct file *file, void *direntry, filldir_t filldir)
                }
                cFYI(1,("loop through %d times filling dir for net buf %p",
                        num_to_fill,cifsFile->srch_inf.ntwrk_buf_start)); 
-               end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + 
-                       smbCalcSize((struct smb_hdr *)cifsFile->srch_inf.ntwrk_buf_start);
-               tmp_buf = kmalloc(NAME_MAX+1,GFP_KERNEL);
+               end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
+                       smbCalcSize((struct smb_hdr *)
+                                   cifsFile->srch_inf.ntwrk_buf_start);
+               /* To be safe - for UCS to UTF-8 with strings loaded
+               with the rare long characters alloc more to account for
+               such multibyte target UTF-8 characters. cifs_unicode.c,
+               which actually does the conversion, has the same limit */
+               tmp_buf = kmalloc((2 * NAME_MAX) + 4, GFP_KERNEL);
                for(i=0;(i<num_to_fill) && (rc == 0);i++) {
                        if(current_entry == NULL) {
-                               cERROR(1,("beyond end of smb with num to fill %d i %d",num_to_fill,i)); /* BB removeme BB */
+                               /* evaluate whether this case is an error */
+                               cERROR(1,("past end of SMB num to fill %d i %d",
+                                         num_to_fill, i));
                                break;
                        }
-/*                     if((!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) || 
-                          (cifsFile->srch_inf.info_level != something that supports server inodes)) {
-                               create dentry
-                               create inode
-                               fill in inode new_inode (which makes number locally)
-                       }
-                       also create local inode for per reasons unless new mount parm says otherwise */
-                       rc = cifs_filldir2(current_entry, file, 
+
+                       rc = cifs_filldir(current_entry, file, 
                                        filldir, direntry,tmp_buf);
                        file->f_pos++;
                        if(file->f_pos == cifsFile->srch_inf.index_of_last_entry) {
-                               cFYI(1,("last entry in buf at pos %lld %s",file->f_pos,tmp_buf)); /* BB removeme BB */
+                               cFYI(1,("last entry in buf at pos %lld %s",
+                                       file->f_pos,tmp_buf)); /* BB removeme BB */
                                cifs_save_resume_key(current_entry,cifsFile);
                                break;
                        } else 
                                current_entry = nxt_dir_entry(current_entry,end_of_smb);
                }
-               if(tmp_buf != NULL)
-                       kfree(tmp_buf);
+               kfree(tmp_buf);
                break;
        } /* end switch */
 
@@ -645,4 +917,3 @@ rddir2_exit:
        FreeXid(xid);
        return rc;
 }
-