Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/readdir.c |
| 3 | * |
| 4 | * Directory search handling |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 5 | * |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 6 | * Copyright (C) International Business Machines Corp., 2004, 2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Lesser General Public License as published |
| 11 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public License |
| 20 | * along with this library; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | #include <linux/fs.h> |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 24 | #include <linux/pagemap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/stat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "cifspdu.h" |
| 27 | #include "cifsglob.h" |
| 28 | #include "cifsproto.h" |
| 29 | #include "cifs_unicode.h" |
| 30 | #include "cifs_debug.h" |
| 31 | #include "cifs_fs_sb.h" |
| 32 | #include "cifsfs.h" |
| 33 | |
Jeff Layton | f588416 | 2009-04-30 07:18:00 -0400 | [diff] [blame] | 34 | /* |
| 35 | * To be safe - for UCS to UTF-8 with strings loaded with the rare long |
| 36 | * characters alloc more to account for such multibyte target UTF-8 |
| 37 | * characters. |
| 38 | */ |
| 39 | #define UNICODE_NAME_MAX ((4 * NAME_MAX) + 2) |
| 40 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 41 | #ifdef CONFIG_CIFS_DEBUG2 |
| 42 | static void dump_cifs_file_struct(struct file *file, char *label) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | { |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 44 | struct cifsFileInfo *cf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 46 | if (file) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | cf = file->private_data; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 48 | if (cf == NULL) { |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 49 | cFYI(1, ("empty cifs private file data")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | return; |
| 51 | } |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 52 | if (cf->invalidHandle) |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 53 | cFYI(1, ("invalid handle")); |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 54 | if (cf->srch_inf.endOfSearch) |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 55 | cFYI(1, ("end of search")); |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 56 | if (cf->srch_inf.emptyDir) |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 57 | cFYI(1, ("empty dir")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 59 | } |
Steve French | 90c81e0 | 2008-02-12 20:32:36 +0000 | [diff] [blame] | 60 | #else |
| 61 | static inline void dump_cifs_file_struct(struct file *file, char *label) |
| 62 | { |
| 63 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 64 | #endif /* DEBUG2 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 66 | /* |
| 67 | * Find the dentry that matches "name". If there isn't one, create one. If it's |
| 68 | * a negative dentry or the uniqueid changed, then drop it and recreate it. |
| 69 | */ |
| 70 | static struct dentry * |
| 71 | cifs_readdir_lookup(struct dentry *parent, struct qstr *name, |
| 72 | struct cifs_fattr *fattr) |
| 73 | { |
| 74 | struct dentry *dentry, *alias; |
| 75 | struct inode *inode; |
| 76 | struct super_block *sb = parent->d_inode->i_sb; |
| 77 | |
| 78 | cFYI(1, ("For %s", name->name)); |
| 79 | |
| 80 | dentry = d_lookup(parent, name); |
| 81 | if (dentry) { |
| 82 | /* FIXME: check for inode number changes? */ |
| 83 | if (dentry->d_inode != NULL) |
| 84 | return dentry; |
| 85 | d_drop(dentry); |
| 86 | dput(dentry); |
| 87 | } |
| 88 | |
| 89 | dentry = d_alloc(parent, name); |
| 90 | if (dentry == NULL) |
| 91 | return NULL; |
| 92 | |
| 93 | inode = cifs_iget(sb, fattr); |
| 94 | if (!inode) { |
| 95 | dput(dentry); |
| 96 | return NULL; |
| 97 | } |
| 98 | |
| 99 | if (CIFS_SB(sb)->tcon->nocase) |
| 100 | dentry->d_op = &cifs_ci_dentry_ops; |
| 101 | else |
| 102 | dentry->d_op = &cifs_dentry_ops; |
| 103 | |
| 104 | alias = d_materialise_unique(dentry, inode); |
| 105 | if (alias != NULL) { |
| 106 | dput(dentry); |
| 107 | if (IS_ERR(alias)) |
| 108 | return NULL; |
| 109 | dentry = alias; |
| 110 | } |
| 111 | |
| 112 | return dentry; |
| 113 | } |
| 114 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 115 | static void |
| 116 | cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 118 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 119 | fattr->cf_gid = cifs_sb->mnt_gid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 121 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { |
| 122 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; |
| 123 | fattr->cf_dtype = DT_DIR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } else { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 125 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; |
| 126 | fattr->cf_dtype = DT_REG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 129 | if (fattr->cf_cifsattrs & ATTR_READONLY) |
| 130 | fattr->cf_mode &= ~S_IWUGO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 132 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL && |
| 133 | fattr->cf_cifsattrs & ATTR_SYSTEM) { |
| 134 | if (fattr->cf_eof == 0) { |
| 135 | fattr->cf_mode &= ~S_IFMT; |
| 136 | fattr->cf_mode |= S_IFIFO; |
| 137 | fattr->cf_dtype = DT_FIFO; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 138 | } else { |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 139 | /* |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 140 | * trying to get the type and mode via SFU can be slow, |
| 141 | * so just call those regular files for now, and mark |
| 142 | * for reval |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 143 | */ |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 144 | fattr->cf_flags |= CIFS_FATTR_NEED_REVAL; |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 145 | } |
| 146 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 147 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Steve French | 15dd478 | 2009-09-25 02:24:45 +0000 | [diff] [blame] | 149 | static void |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 150 | cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info, |
| 151 | struct cifs_sb_info *cifs_sb) |
| 152 | { |
| 153 | memset(fattr, 0, sizeof(*fattr)); |
| 154 | fattr->cf_cifsattrs = le32_to_cpu(info->ExtFileAttributes); |
| 155 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); |
| 156 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); |
| 157 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); |
| 158 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); |
| 159 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 161 | cifs_fill_common_info(fattr, cifs_sb); |
| 162 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Steve French | 15dd478 | 2009-09-25 02:24:45 +0000 | [diff] [blame] | 164 | static void |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 165 | cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info, |
| 166 | struct cifs_sb_info *cifs_sb) |
| 167 | { |
| 168 | int offset = cifs_sb->tcon->ses->server->timeAdj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 170 | memset(fattr, 0, sizeof(*fattr)); |
| 171 | fattr->cf_atime = cnvrtDosUnixTm(info->LastAccessDate, |
| 172 | info->LastAccessTime, offset); |
| 173 | fattr->cf_ctime = cnvrtDosUnixTm(info->LastWriteDate, |
| 174 | info->LastWriteTime, offset); |
| 175 | fattr->cf_mtime = cnvrtDosUnixTm(info->LastWriteDate, |
| 176 | info->LastWriteTime, offset); |
Steve French | f3f6ec4 | 2006-01-08 20:12:58 -0800 | [diff] [blame] | 177 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 178 | fattr->cf_cifsattrs = le16_to_cpu(info->Attributes); |
| 179 | fattr->cf_bytes = le32_to_cpu(info->AllocationSize); |
| 180 | fattr->cf_eof = le32_to_cpu(info->DataSize); |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 181 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 182 | cifs_fill_common_info(fattr, cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | } |
| 184 | |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 185 | /* BB eventually need to add the following helper function to |
| 186 | resolve NT_STATUS_STOPPED_ON_SYMLINK return code when |
| 187 | we try to do FindFirst on (NTFS) directory symlinks */ |
| 188 | /* |
| 189 | int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb, |
| 190 | int xid) |
| 191 | { |
| 192 | __u16 fid; |
| 193 | int len; |
| 194 | int oplock = 0; |
| 195 | int rc; |
| 196 | struct cifsTconInfo *ptcon = cifs_sb->tcon; |
| 197 | char *tmpbuffer; |
| 198 | |
| 199 | rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ, |
| 200 | OPEN_REPARSE_POINT, &fid, &oplock, NULL, |
| 201 | cifs_sb->local_nls, |
| 202 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 203 | if (!rc) { |
| 204 | tmpbuffer = kmalloc(maxpath); |
| 205 | rc = CIFSSMBQueryReparseLinkInfo(xid, ptcon, full_path, |
| 206 | tmpbuffer, |
| 207 | maxpath -1, |
| 208 | fid, |
| 209 | cifs_sb->local_nls); |
| 210 | if (CIFSSMBClose(xid, ptcon, fid)) { |
| 211 | cFYI(1, ("Error closing temporary reparsepoint open)")); |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | */ |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | static int initiate_cifs_search(const int xid, struct file *file) |
| 218 | { |
| 219 | int rc = 0; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 220 | char *full_path; |
| 221 | struct cifsFileInfo *cifsFile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | struct cifs_sb_info *cifs_sb; |
| 223 | struct cifsTconInfo *pTcon; |
| 224 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 225 | if (file->private_data == NULL) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 226 | file->private_data = |
| 227 | kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 230 | if (file->private_data == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | cifsFile = file->private_data; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 233 | cifsFile->invalidHandle = true; |
| 234 | cifsFile->srch_inf.endOfSearch = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 236 | cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 237 | if (cifs_sb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | return -EINVAL; |
| 239 | |
| 240 | pTcon = cifs_sb->tcon; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 241 | if (pTcon == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | return -EINVAL; |
| 243 | |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 244 | full_path = build_path_from_dentry(file->f_path.dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 246 | if (full_path == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Steve French | 966ca92 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 249 | cFYI(1, ("Full path: %s start at: %lld", full_path, file->f_pos)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
Steve French | 75cf6bd | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 251 | ffirst_retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | /* test for Unix extensions */ |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 253 | /* but now check for them on the share/mount not on the SMB session */ |
| 254 | /* if (pTcon->ses->capabilities & CAP_UNIX) { */ |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 255 | if (pTcon->unix_ext) |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 256 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX; |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 257 | else if ((pTcon->ses->capabilities & |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 258 | (CAP_NT_SMBS | CAP_NT_FIND)) == 0) { |
| 259 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_INFO_STANDARD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 261 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO; |
| 262 | } else /* not srvinos - BB fixme add check for backlevel? */ { |
| 263 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO; |
| 264 | } |
| 265 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 266 | rc = CIFSFindFirst(xid, pTcon, full_path, cifs_sb->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 267 | &cifsFile->netfid, &cifsFile->srch_inf, |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 268 | cifs_sb->mnt_cifs_flags & |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 269 | CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb)); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 270 | if (rc == 0) |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 271 | cifsFile->invalidHandle = false; |
Steve French | e836f01 | 2009-05-01 16:20:35 +0000 | [diff] [blame] | 272 | /* BB add following call to handle readdir on new NTFS symlink errors |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 273 | else if STATUS_STOPPED_ON_SYMLINK |
| 274 | call get_symlink_reparse_path and retry with new path */ |
| 275 | else if ((rc == -EOPNOTSUPP) && |
Steve French | 75cf6bd | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 276 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) { |
| 277 | cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM; |
| 278 | goto ffirst_retry; |
| 279 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | kfree(full_path); |
| 281 | return rc; |
| 282 | } |
| 283 | |
| 284 | /* return length of unicode string in bytes */ |
| 285 | static int cifs_unicode_bytelen(char *str) |
| 286 | { |
| 287 | int len; |
Steve French | 63d2583 | 2007-11-05 21:46:10 +0000 | [diff] [blame] | 288 | __le16 *ustr = (__le16 *)str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 290 | for (len = 0; len <= PATH_MAX; len++) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 291 | if (ustr[len] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | return len << 1; |
| 293 | } |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 294 | cFYI(1, ("Unicode string longer than PATH_MAX found")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | return len << 1; |
| 296 | } |
| 297 | |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 298 | static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 300 | char *new_entry; |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 301 | FILE_DIRECTORY_INFO *pDirInfo = (FILE_DIRECTORY_INFO *)old_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 303 | if (level == SMB_FIND_FILE_INFO_STANDARD) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 304 | FIND_FILE_STANDARD_INFO *pfData; |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 305 | pfData = (FIND_FILE_STANDARD_INFO *)pDirInfo; |
| 306 | |
| 307 | new_entry = old_entry + sizeof(FIND_FILE_STANDARD_INFO) + |
| 308 | pfData->FileNameLength; |
| 309 | } else |
| 310 | new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 311 | cFYI(1, ("new entry %p old entry %p", new_entry, old_entry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /* validate that new_entry is not past end of SMB */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 313 | if (new_entry >= end_of_smb) { |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 314 | cERROR(1, |
| 315 | ("search entry %p began after end of SMB %p old entry %p", |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 316 | new_entry, end_of_smb, old_entry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | return NULL; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 318 | } else if (((level == SMB_FIND_FILE_INFO_STANDARD) && |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 319 | (new_entry + sizeof(FIND_FILE_STANDARD_INFO) > end_of_smb)) |
| 320 | || ((level != SMB_FIND_FILE_INFO_STANDARD) && |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 321 | (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb))) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 322 | cERROR(1, ("search entry %p extends after end of SMB %p", |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 323 | new_entry, end_of_smb)); |
| 324 | return NULL; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 325 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | return new_entry; |
| 327 | |
| 328 | } |
| 329 | |
| 330 | #define UNICODE_DOT cpu_to_le16(0x2e) |
| 331 | |
| 332 | /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */ |
| 333 | static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile) |
| 334 | { |
| 335 | int rc = 0; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 336 | char *filename = NULL; |
| 337 | int len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 339 | if (cfile->srch_inf.info_level == SMB_FIND_FILE_UNIX) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 340 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | filename = &pFindData->FileName[0]; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 342 | if (cfile->srch_inf.unicode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | len = cifs_unicode_bytelen(filename); |
| 344 | } else { |
| 345 | /* BB should we make this strnlen of PATH_MAX? */ |
| 346 | len = strnlen(filename, 5); |
| 347 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 348 | } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_DIRECTORY_INFO) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 349 | FILE_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | (FILE_DIRECTORY_INFO *)current_entry; |
| 351 | filename = &pFindData->FileName[0]; |
| 352 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 353 | } else if (cfile->srch_inf.info_level == |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 354 | SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 355 | FILE_FULL_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| 357 | filename = &pFindData->FileName[0]; |
| 358 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 359 | } else if (cfile->srch_inf.info_level == |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 360 | SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 361 | SEARCH_ID_FULL_DIR_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| 363 | filename = &pFindData->FileName[0]; |
| 364 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 365 | } else if (cfile->srch_inf.info_level == |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 366 | SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 367 | FILE_BOTH_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| 369 | filename = &pFindData->FileName[0]; |
| 370 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 371 | } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 372 | FIND_FILE_STANDARD_INFO *pFindData = |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 373 | (FIND_FILE_STANDARD_INFO *)current_entry; |
| 374 | filename = &pFindData->FileName[0]; |
Steve French | 5ddaa68 | 2006-08-15 13:35:48 +0000 | [diff] [blame] | 375 | len = pFindData->FileNameLength; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } else { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 377 | cFYI(1, ("Unknown findfirst level %d", |
| 378 | cfile->srch_inf.info_level)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 381 | if (filename) { |
| 382 | if (cfile->srch_inf.unicode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | __le16 *ufilename = (__le16 *)filename; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 384 | if (len == 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* check for . */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 386 | if (ufilename[0] == UNICODE_DOT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | rc = 1; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 388 | } else if (len == 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | /* check for .. */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 390 | if ((ufilename[0] == UNICODE_DOT) |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 391 | && (ufilename[1] == UNICODE_DOT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | rc = 2; |
| 393 | } |
| 394 | } else /* ASCII */ { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 395 | if (len == 1) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 396 | if (filename[0] == '.') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | rc = 1; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 398 | } else if (len == 2) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 399 | if ((filename[0] == '.') && (filename[1] == '.')) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | rc = 2; |
| 401 | } |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | return rc; |
| 406 | } |
| 407 | |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 408 | /* Check if directory that we are searching has changed so we can decide |
| 409 | whether we can use the cached search results from the previous search */ |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 410 | static int is_dir_changed(struct file *file) |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 411 | { |
Christoph Hellwig | c33f8d3 | 2007-04-02 18:47:20 +0000 | [diff] [blame] | 412 | struct inode *inode = file->f_path.dentry->d_inode; |
| 413 | struct cifsInodeInfo *cifsInfo = CIFS_I(inode); |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 414 | |
Christoph Hellwig | c33f8d3 | 2007-04-02 18:47:20 +0000 | [diff] [blame] | 415 | if (cifsInfo->time == 0) |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 416 | return 1; /* directory was changed, perhaps due to unlink */ |
| 417 | else |
| 418 | return 0; |
| 419 | |
| 420 | } |
| 421 | |
Steve French | 0752f15 | 2008-10-07 20:03:33 +0000 | [diff] [blame] | 422 | static int cifs_save_resume_key(const char *current_entry, |
| 423 | struct cifsFileInfo *cifsFile) |
| 424 | { |
| 425 | int rc = 0; |
| 426 | unsigned int len = 0; |
| 427 | __u16 level; |
| 428 | char *filename; |
| 429 | |
| 430 | if ((cifsFile == NULL) || (current_entry == NULL)) |
| 431 | return -EINVAL; |
| 432 | |
| 433 | level = cifsFile->srch_inf.info_level; |
| 434 | |
| 435 | if (level == SMB_FIND_FILE_UNIX) { |
| 436 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; |
| 437 | |
| 438 | filename = &pFindData->FileName[0]; |
| 439 | if (cifsFile->srch_inf.unicode) { |
| 440 | len = cifs_unicode_bytelen(filename); |
| 441 | } else { |
| 442 | /* BB should we make this strnlen of PATH_MAX? */ |
| 443 | len = strnlen(filename, PATH_MAX); |
| 444 | } |
| 445 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; |
| 446 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { |
| 447 | FILE_DIRECTORY_INFO *pFindData = |
| 448 | (FILE_DIRECTORY_INFO *)current_entry; |
| 449 | filename = &pFindData->FileName[0]; |
| 450 | len = le32_to_cpu(pFindData->FileNameLength); |
| 451 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| 452 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
| 453 | FILE_FULL_DIRECTORY_INFO *pFindData = |
| 454 | (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| 455 | filename = &pFindData->FileName[0]; |
| 456 | len = le32_to_cpu(pFindData->FileNameLength); |
| 457 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| 458 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
| 459 | SEARCH_ID_FULL_DIR_INFO *pFindData = |
| 460 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| 461 | filename = &pFindData->FileName[0]; |
| 462 | len = le32_to_cpu(pFindData->FileNameLength); |
| 463 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| 464 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
| 465 | FILE_BOTH_DIRECTORY_INFO *pFindData = |
| 466 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| 467 | filename = &pFindData->FileName[0]; |
| 468 | len = le32_to_cpu(pFindData->FileNameLength); |
| 469 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; |
| 470 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { |
| 471 | FIND_FILE_STANDARD_INFO *pFindData = |
| 472 | (FIND_FILE_STANDARD_INFO *)current_entry; |
| 473 | filename = &pFindData->FileName[0]; |
| 474 | /* one byte length, no name conversion */ |
| 475 | len = (unsigned int)pFindData->FileNameLength; |
| 476 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; |
| 477 | } else { |
| 478 | cFYI(1, ("Unknown findfirst level %d", level)); |
| 479 | return -EINVAL; |
| 480 | } |
| 481 | cifsFile->srch_inf.resume_name_len = len; |
| 482 | cifsFile->srch_inf.presume_name = filename; |
| 483 | return rc; |
| 484 | } |
| 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | /* find the corresponding entry in the search */ |
| 487 | /* Note that the SMB server returns search entries for . and .. which |
| 488 | complicates logic here if we choose to parse for them and we do not |
| 489 | assume that they are located in the findfirst return buffer.*/ |
| 490 | /* We start counting in the buffer with entry 2 and increment for every |
| 491 | entry (do not increment for . or .. entry) */ |
| 492 | static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon, |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 493 | struct file *file, char **ppCurrentEntry, int *num_to_ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | { |
| 495 | int rc = 0; |
| 496 | int pos_in_buf = 0; |
| 497 | loff_t first_entry_in_buffer; |
| 498 | loff_t index_to_find = file->f_pos; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 499 | struct cifsFileInfo *cifsFile = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | /* check if index in the buffer */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 501 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 502 | if ((cifsFile == NULL) || (ppCurrentEntry == NULL) || |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 503 | (num_to_ret == NULL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | return -ENOENT; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | *ppCurrentEntry = NULL; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 507 | first_entry_in_buffer = |
| 508 | cifsFile->srch_inf.index_of_last_entry - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | cifsFile->srch_inf.entries_in_buffer; |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 510 | |
| 511 | /* if first entry in buf is zero then is first buffer |
| 512 | in search response data which means it is likely . and .. |
| 513 | will be in this buffer, although some servers do not return |
| 514 | . and .. for the root of a drive and for those we need |
| 515 | to start two entries earlier */ |
| 516 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 517 | dump_cifs_file_struct(file, "In fce "); |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 518 | if (((index_to_find < cifsFile->srch_inf.index_of_last_entry) && |
| 519 | is_dir_changed(file)) || |
Steve French | eafe870 | 2005-09-15 21:47:30 -0700 | [diff] [blame] | 520 | (index_to_find < first_entry_in_buffer)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | /* close and restart search */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 522 | cFYI(1, ("search backing up - close and restart search")); |
Steve French | ddb4cbf | 2008-11-20 20:00:44 +0000 | [diff] [blame] | 523 | write_lock(&GlobalSMBSeslock); |
Steve French | 77c57ec | 2008-05-13 21:39:32 +0000 | [diff] [blame] | 524 | if (!cifsFile->srch_inf.endOfSearch && |
| 525 | !cifsFile->invalidHandle) { |
| 526 | cifsFile->invalidHandle = true; |
Steve French | ddb4cbf | 2008-11-20 20:00:44 +0000 | [diff] [blame] | 527 | write_unlock(&GlobalSMBSeslock); |
Steve French | 77c57ec | 2008-05-13 21:39:32 +0000 | [diff] [blame] | 528 | CIFSFindClose(xid, pTcon, cifsFile->netfid); |
Steve French | ddb4cbf | 2008-11-20 20:00:44 +0000 | [diff] [blame] | 529 | } else |
| 530 | write_unlock(&GlobalSMBSeslock); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 531 | if (cifsFile->srch_inf.ntwrk_buf_start) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 532 | cFYI(1, ("freeing SMB ff cache buf on search rewind")); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 533 | if (cifsFile->srch_inf.smallBuf) |
Steve French | d47d7c1 | 2006-02-28 03:45:48 +0000 | [diff] [blame] | 534 | cifs_small_buf_release(cifsFile->srch_inf. |
| 535 | ntwrk_buf_start); |
| 536 | else |
| 537 | cifs_buf_release(cifsFile->srch_inf. |
| 538 | ntwrk_buf_start); |
Shirish Pargaonkar | 76c510a | 2008-07-24 14:48:33 +0000 | [diff] [blame] | 539 | cifsFile->srch_inf.ntwrk_buf_start = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 541 | rc = initiate_cifs_search(xid, file); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 542 | if (rc) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 543 | cFYI(1, ("error %d reinitiating a search on rewind", |
| 544 | rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | return rc; |
| 546 | } |
Jeff Layton | a364bc0 | 2008-10-21 14:42:13 +0000 | [diff] [blame] | 547 | cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | } |
| 549 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 550 | while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) && |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 551 | (rc == 0) && !cifsFile->srch_inf.endOfSearch) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 552 | cFYI(1, ("calling findnext2")); |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 553 | rc = CIFSFindNext(xid, pTcon, cifsFile->netfid, |
Steve French | dfb7533 | 2005-06-22 17:13:47 -0700 | [diff] [blame] | 554 | &cifsFile->srch_inf); |
Jeff Layton | a364bc0 | 2008-10-21 14:42:13 +0000 | [diff] [blame] | 555 | cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 556 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return -ENOENT; |
| 558 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 559 | if (index_to_find < cifsFile->srch_inf.index_of_last_entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | /* we found the buffer that contains the entry */ |
| 561 | /* scan and find it */ |
| 562 | int i; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 563 | char *current_entry; |
| 564 | char *end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | smbCalcSize((struct smb_hdr *) |
| 566 | cifsFile->srch_inf.ntwrk_buf_start); |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 567 | |
| 568 | current_entry = cifsFile->srch_inf.srch_entries_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry |
| 570 | - cifsFile->srch_inf.entries_in_buffer; |
| 571 | pos_in_buf = index_to_find - first_entry_in_buffer; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 572 | cFYI(1, ("found entry - pos_in_buf %d", pos_in_buf)); |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 573 | |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 574 | for (i = 0; (i < (pos_in_buf)) && (current_entry != NULL); i++) { |
Steve French | dfb7533 | 2005-06-22 17:13:47 -0700 | [diff] [blame] | 575 | /* go entry by entry figuring out which is first */ |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 576 | current_entry = nxt_dir_entry(current_entry, end_of_smb, |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 577 | cifsFile->srch_inf.info_level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 579 | if ((current_entry == NULL) && (i < pos_in_buf)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | /* BB fixme - check if we should flag this error */ |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 581 | cERROR(1, ("reached end of buf searching for pos in buf" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | " %d index to find %lld rc %d", |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 583 | pos_in_buf, index_to_find, rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | } |
| 585 | rc = 0; |
| 586 | *ppCurrentEntry = current_entry; |
| 587 | } else { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 588 | cFYI(1, ("index not in buffer - could not findnext into it")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | return 0; |
| 590 | } |
| 591 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 592 | if (pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) { |
| 593 | cFYI(1, ("can not return entries pos_in_buf beyond last")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | *num_to_ret = 0; |
| 595 | } else |
| 596 | *num_to_ret = cifsFile->srch_inf.entries_in_buffer - pos_in_buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | return rc; |
| 599 | } |
| 600 | |
| 601 | /* inode num, inode type and filename returned */ |
| 602 | static int cifs_get_name_from_search_buf(struct qstr *pqst, |
| 603 | char *current_entry, __u16 level, unsigned int unicode, |
Jeff Layton | 1829579 | 2009-04-30 20:45:45 -0400 | [diff] [blame] | 604 | struct cifs_sb_info *cifs_sb, unsigned int max_len, __u64 *pinum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | { |
| 606 | int rc = 0; |
| 607 | unsigned int len = 0; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 608 | char *filename; |
| 609 | struct nls_table *nlt = cifs_sb->local_nls; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | *pinum = 0; |
| 612 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 613 | if (level == SMB_FIND_FILE_UNIX) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 614 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | filename = &pFindData->FileName[0]; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 617 | if (unicode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | len = cifs_unicode_bytelen(filename); |
| 619 | } else { |
| 620 | /* BB should we make this strnlen of PATH_MAX? */ |
| 621 | len = strnlen(filename, PATH_MAX); |
| 622 | } |
| 623 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 624 | *pinum = le64_to_cpu(pFindData->basic.UniqueId); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 625 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 626 | FILE_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | (FILE_DIRECTORY_INFO *)current_entry; |
| 628 | filename = &pFindData->FileName[0]; |
| 629 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 630 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 631 | FILE_FULL_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | (FILE_FULL_DIRECTORY_INFO *)current_entry; |
| 633 | filename = &pFindData->FileName[0]; |
| 634 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 635 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 636 | SEARCH_ID_FULL_DIR_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
| 638 | filename = &pFindData->FileName[0]; |
| 639 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 85a6dac | 2009-04-01 05:22:00 +0000 | [diff] [blame] | 640 | *pinum = le64_to_cpu(pFindData->UniqueId); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 641 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 642 | FILE_BOTH_DIRECTORY_INFO *pFindData = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
| 644 | filename = &pFindData->FileName[0]; |
| 645 | len = le32_to_cpu(pFindData->FileNameLength); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 646 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 647 | FIND_FILE_STANDARD_INFO *pFindData = |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 648 | (FIND_FILE_STANDARD_INFO *)current_entry; |
| 649 | filename = &pFindData->FileName[0]; |
| 650 | /* one byte length, no name conversion */ |
| 651 | len = (unsigned int)pFindData->FileNameLength; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | } else { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 653 | cFYI(1, ("Unknown findfirst level %d", level)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | return -EINVAL; |
| 655 | } |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 656 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 657 | if (len > max_len) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 658 | cERROR(1, ("bad search response length %d past smb end", len)); |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 659 | return -EINVAL; |
| 660 | } |
| 661 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 662 | if (unicode) { |
Jeff Layton | f588416 | 2009-04-30 07:18:00 -0400 | [diff] [blame] | 663 | pqst->len = cifs_from_ucs2((char *) pqst->name, |
| 664 | (__le16 *) filename, |
Jeff Layton | 1829579 | 2009-04-30 20:45:45 -0400 | [diff] [blame] | 665 | UNICODE_NAME_MAX, |
| 666 | min(len, max_len), nlt, |
Jeff Layton | f588416 | 2009-04-30 07:18:00 -0400 | [diff] [blame] | 667 | cifs_sb->mnt_cifs_flags & |
| 668 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | } else { |
| 670 | pqst->name = filename; |
| 671 | pqst->len = len; |
| 672 | } |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 673 | pqst->hash = full_name_hash(pqst->name, pqst->len); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 674 | /* cFYI(1, ("filldir on %s",pqst->name)); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | return rc; |
| 676 | } |
| 677 | |
Jeff Layton | 1829579 | 2009-04-30 20:45:45 -0400 | [diff] [blame] | 678 | static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir, |
| 679 | void *direntry, char *scratch_buf, unsigned int max_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | { |
| 681 | int rc = 0; |
| 682 | struct qstr qstring; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 683 | struct cifsFileInfo *pCifsF; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 684 | u64 inum; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 685 | ino_t ino; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 686 | struct super_block *sb; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 687 | struct cifs_sb_info *cifs_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | struct dentry *tmp_dentry; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 689 | struct cifs_fattr fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
| 691 | /* get filename and len into qstring */ |
| 692 | /* get dentry */ |
| 693 | /* decide whether to create and populate ionde */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 694 | if ((direntry == NULL) || (file == NULL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | return -EINVAL; |
| 696 | |
| 697 | pCifsF = file->private_data; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 698 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 699 | if ((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return -ENOENT; |
| 701 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 702 | rc = cifs_entry_is_dot(pfindEntry, pCifsF); |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 703 | /* skip . and .. since we added them first */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 704 | if (rc != 0) |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 705 | return 0; |
| 706 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 707 | sb = file->f_path.dentry->d_sb; |
| 708 | cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | qstring.name = scratch_buf; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 711 | rc = cifs_get_name_from_search_buf(&qstring, pfindEntry, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | pCifsF->srch_inf.info_level, |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 713 | pCifsF->srch_inf.unicode, cifs_sb, |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 714 | max_len, &inum /* returned */); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 716 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | return rc; |
| 718 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 719 | if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 720 | cifs_unix_basic_to_fattr(&fattr, |
| 721 | &((FILE_UNIX_INFO *) pfindEntry)->basic, |
| 722 | cifs_sb); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 723 | else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) |
| 724 | cifs_std_info_to_fattr(&fattr, (FIND_FILE_STANDARD_INFO *) |
| 725 | pfindEntry, cifs_sb); |
| 726 | else |
| 727 | cifs_dir_info_to_fattr(&fattr, (FILE_DIRECTORY_INFO *) |
| 728 | pfindEntry, cifs_sb); |
Jeff Layton | 132ac7b | 2009-02-10 07:33:57 -0500 | [diff] [blame] | 729 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 730 | /* FIXME: make _to_fattr functions fill this out */ |
| 731 | if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO) |
| 732 | fattr.cf_uniqueid = inum; |
| 733 | else |
| 734 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 736 | ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid); |
| 737 | tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring, &fattr); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 738 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 739 | rc = filldir(direntry, qstring.name, qstring.len, file->f_pos, |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 740 | ino, fattr.cf_dtype); |
| 741 | |
| 742 | /* |
| 743 | * we can not return filldir errors to the caller since they are |
| 744 | * "normal" when the stat blocksize is too small - we return remapped |
| 745 | * error instead |
| 746 | * |
| 747 | * FIXME: This looks bogus. filldir returns -EOVERFLOW in the above |
| 748 | * case already. Why should we be clobbering other errors from it? |
| 749 | */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 750 | if (rc) { |
| 751 | cFYI(1, ("filldir rc = %d", rc)); |
Steve French | 7ca85ba | 2006-10-30 21:42:57 +0000 | [diff] [blame] | 752 | rc = -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | dput(tmp_dentry); |
| 755 | return rc; |
| 756 | } |
| 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
| 759 | int cifs_readdir(struct file *file, void *direntry, filldir_t filldir) |
| 760 | { |
| 761 | int rc = 0; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 762 | int xid, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | struct cifs_sb_info *cifs_sb; |
| 764 | struct cifsTconInfo *pTcon; |
| 765 | struct cifsFileInfo *cifsFile = NULL; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 766 | char *current_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | int num_to_fill = 0; |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 768 | char *tmp_buf = NULL; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 769 | char *end_of_smb; |
Jeff Layton | 1829579 | 2009-04-30 20:45:45 -0400 | [diff] [blame] | 770 | unsigned int max_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | |
| 772 | xid = GetXid(); |
| 773 | |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 774 | cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | pTcon = cifs_sb->tcon; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 776 | if (pTcon == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | return -EINVAL; |
| 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | switch ((int) file->f_pos) { |
| 780 | case 0: |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 781 | if (filldir(direntry, ".", 1, file->f_pos, |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 782 | file->f_path.dentry->d_inode->i_ino, DT_DIR) < 0) { |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 783 | cERROR(1, ("Filldir for current dir failed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | rc = -ENOMEM; |
| 785 | break; |
| 786 | } |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 787 | file->f_pos++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | case 1: |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 789 | if (filldir(direntry, "..", 2, file->f_pos, |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 790 | file->f_path.dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 791 | cERROR(1, ("Filldir for parent dir failed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | rc = -ENOMEM; |
| 793 | break; |
| 794 | } |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 795 | file->f_pos++; |
| 796 | default: |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 797 | /* 1) If search is active, |
| 798 | is in current search buffer? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | if it before then restart search |
| 800 | if after then keep searching till find it */ |
| 801 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 802 | if (file->private_data == NULL) { |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 803 | rc = initiate_cifs_search(xid, file); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 804 | cFYI(1, ("initiate cifs search rc %d", rc)); |
| 805 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | FreeXid(xid); |
| 807 | return rc; |
| 808 | } |
| 809 | } |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 810 | if (file->private_data == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | rc = -EINVAL; |
| 812 | FreeXid(xid); |
| 813 | return rc; |
| 814 | } |
| 815 | cifsFile = file->private_data; |
| 816 | if (cifsFile->srch_inf.endOfSearch) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 817 | if (cifsFile->srch_inf.emptyDir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | cFYI(1, ("End of search, empty dir")); |
| 819 | rc = 0; |
| 820 | break; |
| 821 | } |
| 822 | } /* else { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 823 | cifsFile->invalidHandle = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | CIFSFindClose(xid, pTcon, cifsFile->netfid); |
Steve French | aaa9bbe | 2008-05-23 17:38:32 +0000 | [diff] [blame] | 825 | } */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 827 | rc = find_cifs_entry(xid, pTcon, file, |
| 828 | ¤t_entry, &num_to_fill); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 829 | if (rc) { |
| 830 | cFYI(1, ("fce error %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | goto rddir2_exit; |
| 832 | } else if (current_entry != NULL) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 833 | cFYI(1, ("entry %lld found", file->f_pos)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | } else { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 835 | cFYI(1, ("could not find entry")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | goto rddir2_exit; |
| 837 | } |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 838 | cFYI(1, ("loop through %d times filling dir for net buf %p", |
| 839 | num_to_fill, cifsFile->srch_inf.ntwrk_buf_start)); |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 840 | max_len = smbCalcSize((struct smb_hdr *) |
| 841 | cifsFile->srch_inf.ntwrk_buf_start); |
| 842 | end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + max_len; |
| 843 | |
Jeff Layton | f588416 | 2009-04-30 07:18:00 -0400 | [diff] [blame] | 844 | tmp_buf = kmalloc(UNICODE_NAME_MAX, GFP_KERNEL); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 845 | for (i = 0; (i < num_to_fill) && (rc == 0); i++) { |
| 846 | if (current_entry == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | /* evaluate whether this case is an error */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 848 | cERROR(1, ("past SMB end, num to fill %d i %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | num_to_fill, i)); |
| 850 | break; |
| 851 | } |
Steve French | 6080823 | 2006-04-22 15:53:05 +0000 | [diff] [blame] | 852 | /* if buggy server returns . and .. late do |
| 853 | we want to check for that here? */ |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 854 | rc = cifs_filldir(current_entry, file, |
| 855 | filldir, direntry, tmp_buf, max_len); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 856 | if (rc == -EOVERFLOW) { |
Steve French | 7ca85ba | 2006-10-30 21:42:57 +0000 | [diff] [blame] | 857 | rc = 0; |
| 858 | break; |
| 859 | } |
| 860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | file->f_pos++; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 862 | if (file->f_pos == |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 863 | cifsFile->srch_inf.index_of_last_entry) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 864 | cFYI(1, ("last entry in buf at pos %lld %s", |
| 865 | file->f_pos, tmp_buf)); |
| 866 | cifs_save_resume_key(current_entry, cifsFile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | break; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 868 | } else |
| 869 | current_entry = |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 870 | nxt_dir_entry(current_entry, end_of_smb, |
| 871 | cifsFile->srch_inf.info_level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | } |
| 873 | kfree(tmp_buf); |
| 874 | break; |
| 875 | } /* end switch */ |
| 876 | |
| 877 | rddir2_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | FreeXid(xid); |
| 879 | return rc; |
| 880 | } |