return dentry;
}
-/* Returns 1 if new inode created, 2 if both dentry and inode were */
-/* 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,
- __u64 *inum)
+static void
+cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
{
- struct dentry *tmp_dentry = NULL;
- struct super_block *sb = file->f_path.dentry->d_sb;
- int rc = 0;
+ fattr->cf_uid = cifs_sb->mnt_uid;
+ fattr->cf_gid = cifs_sb->mnt_gid;
- cFYI(1, ("For %s", qstring->name));
-
- tmp_dentry = d_lookup(file->f_path.dentry, qstring);
- if (tmp_dentry) {
- /* BB: overwrite old name? i.e. tmp_dentry->d_name and
- * tmp_dentry->d_name.len??
- */
- cFYI(0, ("existing dentry with inode 0x%p",
- tmp_dentry->d_inode));
- *ptmp_inode = tmp_dentry->d_inode;
- if (*ptmp_inode == NULL) {
- *ptmp_inode = cifs_new_inode(sb, inum);
- if (*ptmp_inode == NULL)
- return rc;
- rc = 1;
- }
+ if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
+ fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
+ fattr->cf_dtype = DT_DIR;
} else {
- tmp_dentry = d_alloc(file->f_path.dentry, qstring);
- if (tmp_dentry == NULL) {
- cERROR(1, ("Failed allocating dentry"));
- *ptmp_inode = NULL;
- return rc;
- }
-
- if (CIFS_SB(sb)->tcon->nocase)
- tmp_dentry->d_op = &cifs_ci_dentry_ops;
- else
- tmp_dentry->d_op = &cifs_dentry_ops;
-
- *ptmp_inode = cifs_new_inode(sb, inum);
- if (*ptmp_inode == NULL)
- return rc;
- rc = 2;
- }
-
- tmp_dentry->d_time = jiffies;
- *pnew_dentry = tmp_dentry;
- return rc;
-}
-
-static void fill_in_inode(struct inode *tmp_inode, int new_buf_type,
- char *buf, unsigned 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;
- __u64 allocation_size;
- __u64 end_of_file;
- umode_t default_mode;
-
- /* save mtime and size */
- local_mtime = tmp_inode->i_mtime;
- local_size = tmp_inode->i_size;
-
- if (new_buf_type) {
- FILE_DIRECTORY_INFO *pfindData = (FILE_DIRECTORY_INFO *)buf;
-
- attr = le32_to_cpu(pfindData->ExtFileAttributes);
- allocation_size = le64_to_cpu(pfindData->AllocationSize);
- end_of_file = le64_to_cpu(pfindData->EndOfFile);
- tmp_inode->i_atime =
- cifs_NTtimeToUnix(pfindData->LastAccessTime);
- tmp_inode->i_mtime =
- cifs_NTtimeToUnix(pfindData->LastWriteTime);
- tmp_inode->i_ctime =
- cifs_NTtimeToUnix(pfindData->ChangeTime);
- } else { /* legacy, OS2 and DOS style */
- int offset = cifs_sb->tcon->ses->server->timeAdj;
- FIND_FILE_STANDARD_INFO *pfindData =
- (FIND_FILE_STANDARD_INFO *)buf;
-
- tmp_inode->i_mtime = cnvrtDosUnixTm(pfindData->LastWriteDate,
- pfindData->LastWriteTime,
- offset);
- tmp_inode->i_atime = cnvrtDosUnixTm(pfindData->LastAccessDate,
- pfindData->LastAccessTime,
- offset);
- tmp_inode->i_ctime = cnvrtDosUnixTm(pfindData->LastWriteDate,
- pfindData->LastWriteTime,
- offset);
- attr = le16_to_cpu(pfindData->Attributes);
- allocation_size = le32_to_cpu(pfindData->AllocationSize);
- end_of_file = le32_to_cpu(pfindData->DataSize);
- }
-
- /* Linux can not store file creation time unfortunately so ignore it */
-
- cifsInfo->cifsAttrs = attr;
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
- /* get more accurate mode via ACL - so force inode refresh */
- cifsInfo->time = 0;
- } else
-#endif /* CONFIG_CIFS_EXPERIMENTAL */
- cifsInfo->time = jiffies;
-
- /* 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;
+ fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_REG;
}
- if (attr & ATTR_DIRECTORY)
- default_mode = cifs_sb->mnt_dir_mode;
- else
- default_mode = cifs_sb->mnt_file_mode;
-
- /* set initial permissions */
- if ((atomic_read(&cifsInfo->inUse) == 0) ||
- (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
- tmp_inode->i_mode = default_mode;
- else {
- /* just reenable write bits if !ATTR_READONLY */
- if ((tmp_inode->i_mode & S_IWUGO) == 0 &&
- (attr & ATTR_READONLY) == 0)
- tmp_inode->i_mode |= (S_IWUGO & default_mode);
-
- tmp_inode->i_mode &= ~S_IFMT;
- }
-
- /* clear write bits if ATTR_READONLY is set */
- if (attr & ATTR_READONLY)
- tmp_inode->i_mode &= ~S_IWUGO;
+ if (fattr->cf_cifsattrs & ATTR_READONLY)
+ fattr->cf_mode &= ~S_IWUGO;
- /* set inode type */
- if ((attr & ATTR_SYSTEM) &&
- (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) {
- if (end_of_file == 0) {
- tmp_inode->i_mode |= S_IFIFO;
- *pobject_type = DT_FIFO;
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL &&
+ fattr->cf_cifsattrs & ATTR_SYSTEM) {
+ if (fattr->cf_eof == 0) {
+ fattr->cf_mode &= ~S_IFMT;
+ fattr->cf_mode |= S_IFIFO;
+ fattr->cf_dtype = DT_FIFO;
} else {
/*
- * trying to get the type can be slow, so just call
- * this a regular file for now, and mark for reval
+ * trying to get the type and mode via SFU can be slow,
+ * so just call those regular files for now, and mark
+ * for reval
*/
- tmp_inode->i_mode |= S_IFREG;
- *pobject_type = DT_REG;
- cifsInfo->time = 0;
- }
- } else {
- if (attr & ATTR_DIRECTORY) {
- tmp_inode->i_mode |= S_IFDIR;
- *pobject_type = DT_DIR;
- } else {
- tmp_inode->i_mode |= S_IFREG;
- *pobject_type = DT_REG;
+ fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
}
}
+}
- /* can not fill in nlink here as in qpathinfo version and Unx search */
- if (atomic_read(&cifsInfo->inUse) == 0)
- atomic_set(&cifsInfo->inUse, 1);
+void
+cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
+ struct cifs_sb_info *cifs_sb)
+{
+ memset(fattr, 0, sizeof(*fattr));
+ fattr->cf_cifsattrs = le32_to_cpu(info->ExtFileAttributes);
+ fattr->cf_eof = le64_to_cpu(info->EndOfFile);
+ fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
+ fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
+ fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
+ fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
+
+ cifs_fill_common_info(fattr, cifs_sb);
+}
- cifsInfo->server_eof = end_of_file;
- spin_lock(&tmp_inode->i_lock);
- if (is_size_safe_to_change(cifsInfo, end_of_file)) {
- /* 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);
+void
+cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info,
+ struct cifs_sb_info *cifs_sb)
+{
+ int offset = cifs_sb->tcon->ses->server->timeAdj;
- /* 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;
- }
- spin_unlock(&tmp_inode->i_lock);
-
- if (allocation_size < end_of_file)
- cFYI(1, ("May be sparse file, allocation less than file size"));
- cFYI(1, ("File Size %ld and blocks %llu",
- (unsigned long)tmp_inode->i_size,
- (unsigned long long)tmp_inode->i_blocks));
- 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) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
- else
- tmp_inode->i_fop = &cifs_file_direct_ops;
- } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- tmp_inode->i_fop = &cifs_file_nobrl_ops;
- else
- tmp_inode->i_fop = &cifs_file_ops;
-
- if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
- (cifs_sb->tcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
- tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- tmp_inode->i_data.a_ops = &cifs_addr_ops;
-
- if (isNewInode)
- return; /* No sense invalidating pages for new inode
- since 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);
- }
+ memset(fattr, 0, sizeof(*fattr));
+ fattr->cf_atime = cnvrtDosUnixTm(info->LastAccessDate,
+ info->LastAccessTime, offset);
+ fattr->cf_ctime = cnvrtDosUnixTm(info->LastWriteDate,
+ info->LastWriteTime, offset);
+ fattr->cf_mtime = cnvrtDosUnixTm(info->LastWriteDate,
+ info->LastWriteTime, offset);
+
+ fattr->cf_cifsattrs = le16_to_cpu(info->Attributes);
+ fattr->cf_bytes = le32_to_cpu(info->AllocationSize);
+ fattr->cf_eof = le32_to_cpu(info->DataSize);
+
+ cifs_fill_common_info(fattr, cifs_sb);
}
/* BB eventually need to add the following helper function to
int rc = 0;
struct qstr qstring;
struct cifsFileInfo *pCifsF;
- unsigned int obj_type;
- __u64 inum;
+ u64 inum;
ino_t ino;
+ struct super_block *sb;
struct cifs_sb_info *cifs_sb;
- struct inode *tmp_inode;
struct dentry *tmp_dentry;
struct cifs_fattr fattr;
if (rc != 0)
return 0;
- cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+ sb = file->f_path.dentry->d_sb;
+ cifs_sb = CIFS_SB(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,
- max_len,
- &inum /* returned */);
+ max_len, &inum /* returned */);
if (rc)
return rc;
- /* only these two infolevels return valid inode numbers */
- if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
+ if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX)
cifs_unix_basic_to_fattr(&fattr,
&((FILE_UNIX_INFO *) pfindEntry)->basic,
cifs_sb);
- tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring,
- &fattr);
- obj_type = fattr.cf_dtype;
- ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);
- } else {
- if (pCifsF->srch_inf.info_level ==
- SMB_FIND_FILE_ID_FULL_DIR_INFO)
- rc = construct_dentry(&qstring, file, &tmp_inode,
- &tmp_dentry, &inum);
- else
- rc = construct_dentry(&qstring, file, &tmp_inode,
- &tmp_dentry, NULL);
-
- if ((tmp_inode == NULL) || (tmp_dentry == NULL)) {
- rc = -ENOMEM;
- goto out;
- }
-
- /* 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_INFO_STANDARD)
- fill_in_inode(tmp_inode, 0, pfindEntry, &obj_type, rc);
- else
- fill_in_inode(tmp_inode, 1, pfindEntry, &obj_type, rc);
+ else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD)
+ cifs_std_info_to_fattr(&fattr, (FIND_FILE_STANDARD_INFO *)
+ pfindEntry, cifs_sb);
+ else
+ cifs_dir_info_to_fattr(&fattr, (FILE_DIRECTORY_INFO *)
+ pfindEntry, cifs_sb);
- /* new inode - needs to be tied to dentry */
- if (rc) {
- d_instantiate(tmp_dentry, tmp_inode);
- if (rc == 2)
- d_rehash(tmp_dentry);
- }
+ /* FIXME: make _to_fattr functions fill this out */
+ if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO)
+ fattr.cf_uniqueid = inum;
+ else
+ fattr.cf_uniqueid = iunique(sb, ROOT_I);
- ino = cifs_uniqueid_to_ino_t(tmp_inode->i_ino);
- }
+ ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);
+ tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring, &fattr);
rc = filldir(direntry, qstring.name, qstring.len, file->f_pos,
- ino, obj_type);
+ ino, fattr.cf_dtype);
+
+ /*
+ * we can not return filldir errors to the caller since they are
+ * "normal" when the stat blocksize is too small - we return remapped
+ * error instead
+ *
+ * FIXME: This looks bogus. filldir returns -EOVERFLOW in the above
+ * case already. Why should we be clobbering other errors from it?
+ */
if (rc) {
cFYI(1, ("filldir rc = %d", rc));
- /* we can not return filldir errors to the caller
- since they are "normal" when the stat blocksize
- is too small - we return remapped error instead */
rc = -EOVERFLOW;
}
-
-out:
dput(tmp_dentry);
return rc;
}
git.openpandora.org / pandora-kernel.git / blobdiff