| /* |
| * fs/cifs/readdir.c |
| * |
| * Directory search handling |
| * |
| * Copyright (C) International Business Machines Corp., 2004 |
| * 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/stat.h> |
| #include <linux/smp_lock.h> |
| #include "cifspdu.h" |
| #include "cifsglob.h" |
| #include "cifsproto.h" |
| #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); |
| |
| |
| /* BB fixme - add debug wrappers around this function to disable it fixme BB */ |
| /* static void dump_cifs_file_struct(struct file * file, char * label) |
| { |
| struct cifsFileInfo * cf; |
| |
| if(file) { |
| cf = (struct cifsFileInfo *)file->private_data; |
| if(cf == NULL) { |
| cFYI(1,("empty cifs private file data")); |
| return; |
| } |
| if(cf->invalidHandle) { |
| cFYI(1,("invalid handle")); |
| } |
| if(cf->srch_inf.endOfSearch) { |
| cFYI(1,("end of search")); |
| } |
| if(cf->srch_inf.emptyDir) { |
| cFYI(1,("empty dir")); |
| } |
| |
| } |
| } */ |
| |
| static int initiate_cifs_search(const int xid, struct file * file) |
| { |
| int rc = 0; |
| char * full_path; |
| struct cifsFileInfo * cifsFile; |
| struct cifs_sb_info *cifs_sb; |
| struct cifsTconInfo *pTcon; |
| |
| if(file->private_data == NULL) { |
| file->private_data = |
| kmalloc(sizeof(struct cifsFileInfo),GFP_KERNEL); |
| } |
| |
| if(file->private_data == NULL) { |
| return -ENOMEM; |
| } else { |
| memset(file->private_data,0,sizeof(struct cifsFileInfo)); |
| } |
| cifsFile = (struct cifsFileInfo *)file->private_data; |
| cifsFile->invalidHandle = TRUE; |
| cifsFile->srch_inf.endOfSearch = FALSE; |
| |
| cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
| if(cifs_sb == NULL) |
| return -EINVAL; |
| |
| pTcon = cifs_sb->tcon; |
| 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); |
| 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)); |
| |
| /* test for Unix extensions */ |
| if (pTcon->ses->capabilities & CAP_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); |
| if(rc == 0) |
| cifsFile->invalidHandle = FALSE; |
| if(full_path) |
| kfree(full_path); |
| return rc; |
| } |
| |
| /* return length of unicode string in bytes */ |
| static int cifs_unicode_bytelen(char * str) |
| { |
| int len; |
| __le16 * ustr = (__le16 *)str; |
| |
| for(len=0;len <= PATH_MAX;len++) { |
| if(ustr[len] == 0) |
| return len << 1; |
| } |
| cFYI(1,("Unicode string longer than PATH_MAX found")); |
| return len << 1; |
| } |
| |
| static char * nxt_dir_entry(char * old_entry, char * end_of_smb) |
| { |
| char * new_entry; |
| FILE_DIRECTORY_INFO * pDirInfo = (FILE_DIRECTORY_INFO *)old_entry; |
| |
| new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset); |
| 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)); |
| return NULL; |
| } else |
| return new_entry; |
| |
| } |
| |
| #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) |
| { |
| int rc = 0; |
| char * filename = NULL; |
| int len = 0; |
| |
| if(cfile->srch_inf.info_level == 0x202) { |
| FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| if(cfile->srch_inf.unicode) { |
| len = cifs_unicode_bytelen(filename); |
| } else { |
| /* BB should we make this strnlen of PATH_MAX? */ |
| len = strnlen(filename, 5); |
| } |
| } else if(cfile->srch_inf.info_level == 0x101) { |
| FILE_DIRECTORY_INFO * pFindData = |
| (FILE_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else if(cfile->srch_inf.info_level == 0x102) { |
| FILE_FULL_DIRECTORY_INFO * pFindData = |
| (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else if(cfile->srch_inf.info_level == 0x105) { |
| SEARCH_ID_FULL_DIR_INFO * pFindData = |
| (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else if(cfile->srch_inf.info_level == 0x104) { |
| FILE_BOTH_DIRECTORY_INFO * pFindData = |
| (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else { |
| cFYI(1,("Unknown findfirst level %d",cfile->srch_inf.info_level)); |
| } |
| |
| if(filename) { |
| if(cfile->srch_inf.unicode) { |
| __le16 *ufilename = (__le16 *)filename; |
| if(len == 2) { |
| /* check for . */ |
| if(ufilename[0] == UNICODE_DOT) |
| rc = 1; |
| } else if(len == 4) { |
| /* check for .. */ |
| if((ufilename[0] == UNICODE_DOT) |
| &&(ufilename[1] == UNICODE_DOT)) |
| rc = 2; |
| } |
| } else /* ASCII */ { |
| if(len == 1) { |
| if(filename[0] == '.') |
| rc = 1; |
| } else if(len == 2) { |
| if((filename[0] == '.') && (filename[1] == '.')) |
| rc = 2; |
| } |
| } |
| } |
| |
| return rc; |
| } |
| |
| /* find the corresponding entry in the search */ |
| /* Note that the SMB server returns search entries for . and .. which |
| complicates logic here if we choose to parse for them and we do not |
| 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) |
| { |
| 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; |
| /* check if index in the buffer */ |
| |
| if((cifsFile == NULL) || (ppCurrentEntry == NULL) || (num_to_ret == NULL)) |
| return -ENOENT; |
| |
| *ppCurrentEntry = NULL; |
| first_entry_in_buffer = |
| cifsFile->srch_inf.index_of_last_entry - |
| cifsFile->srch_inf.entries_in_buffer; |
| /* dump_cifs_file_struct(file, "In fce ");*/ |
| if(index_to_find < first_entry_in_buffer) { |
| /* close and restart search */ |
| 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; |
| } |
| if(cifsFile->srch_inf.ntwrk_buf_start) { |
| 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); |
| if(rc) { |
| cFYI(1,("error %d reinitiating a search on rewind",rc)); |
| return rc; |
| } |
| } |
| |
| 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); |
| if(rc) |
| return -ENOENT; |
| } |
| if(index_to_find < cifsFile->srch_inf.index_of_last_entry) { |
| /* we found the buffer that contains the entry */ |
| /* scan and find it */ |
| 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); |
| /* 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; |
| 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; |
| for(i=0;(i<(pos_in_buf)) && (current_entry != NULL);i++) { |
| /* go entry to next entry figuring out which we need to start with */ |
| /* if( . or ..) |
| skip */ |
| rc = cifs_entry_is_dot(current_entry,cifsFile); |
| if(rc == 1) /* is . or .. so skip */ { |
| cFYI(1,("Entry is .")); /* BB removeme BB */ |
| /* continue; */ |
| } else if (rc == 2 ) { |
| cFYI(1,("Entry is ..")); /* BB removeme BB */ |
| /* continue; */ |
| } |
| 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 */ |
| } |
| rc = 0; |
| *ppCurrentEntry = current_entry; |
| } else { |
| cFYI(1,("index not in buffer - could not findnext into it")); |
| return 0; |
| } |
| |
| if(pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) { |
| cFYI(1,("can not return entries when pos_in_buf beyond last entry")); |
| *num_to_ret = 0; |
| } else |
| *num_to_ret = cifsFile->srch_inf.entries_in_buffer - pos_in_buf; |
| /* dump_cifs_file_struct(file, "end fce ");*/ |
| |
| return rc; |
| } |
| |
| /* 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) |
| { |
| int rc = 0; |
| unsigned int len = 0; |
| char * filename; |
| |
| *pinum = 0; |
| |
| if(level == SMB_FIND_FILE_UNIX) { |
| FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry; |
| |
| filename = &pFindData->FileName[0]; |
| if(unicode) { |
| len = cifs_unicode_bytelen(filename); |
| } else { |
| /* BB should we make this strnlen of PATH_MAX? */ |
| len = strnlen(filename, PATH_MAX); |
| } |
| |
| /* BB fixme - hash low and high 32 bits if not 64 bit arch BB fixme */ |
| *pinum = pFindData->UniqueId; |
| } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) { |
| FILE_DIRECTORY_INFO * pFindData = |
| (FILE_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
| FILE_FULL_DIRECTORY_INFO * pFindData = |
| (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
| SEARCH_ID_FULL_DIR_INFO * pFindData = |
| (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| *pinum = pFindData->UniqueId; |
| } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
| FILE_BOTH_DIRECTORY_INFO * pFindData = |
| (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| } else { |
| cFYI(1,("Unknown findfirst level %d",level)); |
| return -EINVAL; |
| } |
| 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); |
| } else { |
| pqst->name = filename; |
| pqst->len = len; |
| } |
| pqst->hash = full_name_hash(pqst->name,pqst->len); |
| /* cFYI(1,("filldir on %s",pqst->name)); */ |
| return rc; |
| } |
| |
| |
| static int |
| cifs_filldir2(char * pfindEntry, struct file *file, |
| filldir_t filldir, void *direntry,char * scratch_buf) |
| { |
| int rc = 0; |
| struct qstr qstring; |
| struct cifsFileInfo * pCifsF; |
| unsigned obj_type; |
| ino_t inum; |
| struct cifs_sb_info * cifs_sb; |
| struct inode *tmp_inode; |
| struct dentry *tmp_dentry; |
| |
| /* get filename and len into qstring */ |
| /* get dentry */ |
| /* decide whether to create and populate ionde */ |
| if((direntry == NULL) || (file == NULL)) |
| return -EINVAL; |
| |
| pCifsF = file->private_data; |
| |
| if((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL)) |
| return -ENOENT; |
| |
| if(file->f_dentry == NULL) |
| return -ENOENT; |
| |
| cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
| |
| 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, |
| &inum /* returned */); |
| |
| if(rc) |
| return rc; |
| |
| rc = construct_dentry(&qstring,file,&tmp_inode, &tmp_dentry); |
| if((tmp_inode == NULL) || (tmp_dentry == NULL)) |
| return -ENOMEM; |
| |
| if(rc) { |
| /* inode created, we need to hash it with right inode number */ |
| if(inum != 0) { |
| /* BB fixme - hash the 2 32 quantities bits together if necessary BB */ |
| tmp_inode->i_ino = inum; |
| } |
| insert_inode_hash(tmp_inode); |
| } |
| |
| if(pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) { |
| unix_fill_in_inode(tmp_inode,(FILE_UNIX_INFO *)pfindEntry,&obj_type); |
| } else { |
| fill_in_inode(tmp_inode,(FILE_DIRECTORY_INFO *)pfindEntry,&obj_type); |
| } |
| |
| rc = filldir(direntry,qstring.name,qstring.len,file->f_pos,tmp_inode->i_ino,obj_type); |
| if(rc) { |
| cFYI(1,("filldir rc = %d",rc)); |
| } |
| |
| dput(tmp_dentry); |
| return rc; |
| } |
| |
| int cifs_save_resume_key(const char * current_entry,struct cifsFileInfo * cifsFile) |
| { |
| int rc = 0; |
| unsigned int len = 0; |
| __u16 level; |
| char * filename; |
| |
| if((cifsFile == NULL) || (current_entry == NULL)) |
| return -EINVAL; |
| |
| level = cifsFile->srch_inf.info_level; |
| |
| if(level == SMB_FIND_FILE_UNIX) { |
| FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry; |
| |
| filename = &pFindData->FileName[0]; |
| if(cifsFile->srch_inf.unicode) { |
| len = cifs_unicode_bytelen(filename); |
| } else { |
| /* BB should we make this strnlen of PATH_MAX? */ |
| len = strnlen(filename, PATH_MAX); |
| } |
| cifsFile->srch_inf.resume_key = pFindData->ResumeKey; |
| } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) { |
| FILE_DIRECTORY_INFO * pFindData = |
| (FILE_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
| FILE_FULL_DIRECTORY_INFO * pFindData = |
| (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
| SEARCH_ID_FULL_DIR_INFO * pFindData = |
| (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
| FILE_BOTH_DIRECTORY_INFO * pFindData = |
| (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| filename = &pFindData->FileName[0]; |
| len = le32_to_cpu(pFindData->FileNameLength); |
| cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| } else { |
| cFYI(1,("Unknown findfirst level %d",level)); |
| return -EINVAL; |
| } |
| cifsFile->srch_inf.resume_name_len = len; |
| cifsFile->srch_inf.presume_name = filename; |
| return rc; |
| } |
| |
| int cifs_readdir2(struct file *file, void *direntry, filldir_t filldir) |
| { |
| int rc = 0; |
| int xid,i; |
| struct cifs_sb_info *cifs_sb; |
| struct cifsTconInfo *pTcon; |
| struct cifsFileInfo *cifsFile = NULL; |
| char * current_entry; |
| int num_to_fill = 0; |
| char * tmp_buf = NULL; |
| char * end_of_smb; |
| |
| xid = GetXid(); |
| |
| if(file->f_dentry == NULL) { |
| FreeXid(xid); |
| return -EIO; |
| } |
| /* dump_cifs_file_struct(file, "Begin rdir "); */ |
| |
| cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
| pTcon = cifs_sb->tcon; |
| if(pTcon == NULL) |
| return -EINVAL; |
| |
| /* cFYI(1,("readdir2 pos: %lld",file->f_pos)); */ |
| |
| switch ((int) file->f_pos) { |
| case 0: |
| /*if (filldir(direntry, ".", 1, file->f_pos, |
| file->f_dentry->d_inode->i_ino, DT_DIR) < 0) { |
| cERROR(1, ("Filldir for current dir failed ")); |
| rc = -ENOMEM; |
| break; |
| } |
| file->f_pos++; */ |
| case 1: |
| /* if (filldir(direntry, "..", 2, file->f_pos, |
| file->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) { |
| cERROR(1, ("Filldir for parent dir failed ")); |
| rc = -ENOMEM; |
| break; |
| } |
| file->f_pos++; */ |
| case 2: |
| /* 1) If search is active, |
| is in current search buffer? |
| if it before then restart search |
| if after then keep searching till find it */ |
| |
| if(file->private_data == NULL) { |
| rc = initiate_cifs_search(xid,file); |
| cFYI(1,("initiate cifs search rc %d",rc)); |
| if(rc) { |
| FreeXid(xid); |
| return rc; |
| } |
| } |
| default: |
| if(file->private_data == NULL) { |
| rc = -EINVAL; |
| FreeXid(xid); |
| return rc; |
| } |
| cifsFile = (struct cifsFileInfo *) file->private_data; |
| if (cifsFile->srch_inf.endOfSearch) { |
| if(cifsFile->srch_inf.emptyDir) { |
| cFYI(1, ("End of search, empty dir")); |
| rc = 0; |
| break; |
| } |
| } /* else { |
| 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 */ |
| /* dump_cifs_file_struct(file, "rdir after default ");*/ |
| |
| rc = find_cifs_entry(xid,pTcon, file, |
| ¤t_entry,&num_to_fill); |
| if(rc) { |
| cFYI(1,("fce error %d",rc)); |
| goto rddir2_exit; |
| } else if (current_entry != NULL) { |
| cFYI(1,("entry %lld found",file->f_pos)); |
| } else { |
| cFYI(1,("could not find entry")); |
| goto rddir2_exit; |
| } |
| 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); |
| 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 */ |
| 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, |
| 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 */ |
| 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); |
| break; |
| } /* end switch */ |
| |
| rddir2_exit: |
| /* dump_cifs_file_struct(file, "end rdir "); */ |
| FreeXid(xid); |
| return rc; |
| } |
| |