#include "cifs_fs_sb.h"
#include "cifsfs.h"
+/*
+ * To be safe - for UCS to UTF-8 with strings loaded with the rare long
+ * characters alloc more to account for such multibyte target UTF-8
+ * characters.
+ */
+#define UNICODE_NAME_MAX ((4 * NAME_MAX) + 2)
+
#ifdef CONFIG_CIFS_DEBUG2
static void dump_cifs_file_struct(struct file *file, char *label)
{
}
#endif /* DEBUG2 */
-/* Returns one if new inode created (which therefore needs to be hashed) */
-/* Might check in the future if inode number changed so we can rehash inode */
-static int construct_dentry(struct qstr *qstring, struct file *file,
- struct inode **ptmp_inode, struct dentry **pnew_dentry)
+/*
+ * Find the dentry that matches "name". If there isn't one, create one. If it's
+ * a negative dentry or the uniqueid changed, then drop it and recreate it.
+ */
+static struct dentry *
+cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
+ struct cifs_fattr *fattr)
{
- struct dentry *tmp_dentry;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
- int rc = 0;
-
- cFYI(1, ("For %s", qstring->name));
- cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
- pTcon = cifs_sb->tcon;
+ struct dentry *dentry, *alias;
+ struct inode *inode;
+ struct super_block *sb = parent->d_inode->i_sb;
+
+ cFYI(1, ("For %s", name->name));
+
+ dentry = d_lookup(parent, name);
+ if (dentry) {
+ /* FIXME: check for inode number changes? */
+ if (dentry->d_inode != NULL)
+ return dentry;
+ d_drop(dentry);
+ dput(dentry);
+ }
- qstring->hash = full_name_hash(qstring->name, qstring->len);
- tmp_dentry = d_lookup(file->f_path.dentry, qstring);
- if (tmp_dentry) {
- cFYI(0, ("existing dentry with inode 0x%p",
- tmp_dentry->d_inode));
- *ptmp_inode = tmp_dentry->d_inode;
-/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
- if (*ptmp_inode == NULL) {
- *ptmp_inode = new_inode(file->f_path.dentry->d_sb);
- if (*ptmp_inode == NULL)
- return rc;
- rc = 1;
- }
- if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
- (*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
- } else {
- tmp_dentry = d_alloc(file->f_path.dentry, qstring);
- if (tmp_dentry == NULL) {
- cERROR(1, ("Failed allocating dentry"));
- *ptmp_inode = NULL;
- return rc;
- }
+ dentry = d_alloc(parent, name);
+ if (dentry == NULL)
+ return NULL;
- *ptmp_inode = new_inode(file->f_path.dentry->d_sb);
- if (pTcon->nocase)
- tmp_dentry->d_op = &cifs_ci_dentry_ops;
- else
- tmp_dentry->d_op = &cifs_dentry_ops;
- if (*ptmp_inode == NULL)
- return rc;
- if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
- (*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
- rc = 2;
+ inode = cifs_iget(sb, fattr);
+ if (!inode) {
+ dput(dentry);
+ return NULL;
}
- tmp_dentry->d_time = jiffies;
- *pnew_dentry = tmp_dentry;
- return rc;
-}
-
-static void AdjustForTZ(struct cifsTconInfo *tcon, struct inode *inode)
-{
- if ((tcon) && (tcon->ses) && (tcon->ses->server)) {
- inode->i_ctime.tv_sec += tcon->ses->server->timeAdj;
- inode->i_mtime.tv_sec += tcon->ses->server->timeAdj;
- inode->i_atime.tv_sec += tcon->ses->server->timeAdj;
+ if (CIFS_SB(sb)->tcon->nocase)
+ dentry->d_op = &cifs_ci_dentry_ops;
+ else
+ dentry->d_op = &cifs_dentry_ops;
+
+ alias = d_materialise_unique(dentry, inode);
+ if (alias != NULL) {
+ dput(dentry);
+ if (IS_ERR(alias))
+ return NULL;
+ dentry = alias;
}
- return;
-}
+ return dentry;
+}
-static void fill_in_inode(struct inode *tmp_inode, int new_buf_type,
- char *buf, unsigned int *pobject_type, int isNewInode)
+static void
+cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
{
- 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;
-
- /* 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(le64_to_cpu(pfindData->LastAccessTime));
- tmp_inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
- tmp_inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
- } else { /* legacy, OS2 and DOS style */
-/* struct timespec ts;*/
- FIND_FILE_STANDARD_INFO *pfindData =
- (FIND_FILE_STANDARD_INFO *)buf;
-
- tmp_inode->i_mtime = cnvrtDosUnixTm(
- le16_to_cpu(pfindData->LastWriteDate),
- le16_to_cpu(pfindData->LastWriteTime));
- tmp_inode->i_atime = cnvrtDosUnixTm(
- le16_to_cpu(pfindData->LastAccessDate),
- le16_to_cpu(pfindData->LastAccessTime));
- tmp_inode->i_ctime = cnvrtDosUnixTm(
- le16_to_cpu(pfindData->LastWriteDate),
- le16_to_cpu(pfindData->LastWriteTime));
- AdjustForTZ(cifs_sb->tcon, tmp_inode);
- 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 */
+ fattr->cf_uid = cifs_sb->mnt_uid;
+ fattr->cf_gid = cifs_sb->mnt_gid;
- 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;
- /* set default mode. will override for dirs below */
- tmp_inode->i_mode = cifs_sb->mnt_file_mode;
+ if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
+ fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
+ fattr->cf_dtype = DT_DIR;
} else {
- /* mask off the type bits since it gets set
- below and we do not want to get two type
- bits set */
- tmp_inode->i_mode &= ~S_IFMT;
+ fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
+ fattr->cf_dtype = DT_REG;
}
- if (attr & ATTR_DIRECTORY) {
- *pobject_type = DT_DIR;
- /* override default perms since we do not lock dirs */
- if (atomic_read(&cifsInfo->inUse) == 0)
- tmp_inode->i_mode = cifs_sb->mnt_dir_mode;
- tmp_inode->i_mode |= S_IFDIR;
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (attr & ATTR_SYSTEM)) {
- if (end_of_file == 0) {
- *pobject_type = DT_FIFO;
- tmp_inode->i_mode |= S_IFIFO;
- } else {
- /* rather than get the type here, we mark the
- inode as needing revalidate and get the real type
- (blk vs chr vs. symlink) later ie in lookup */
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- cifsInfo->time = 0;
- }
-/* we no longer mark these because we could not follow them */
-/* } else if (attr & ATTR_REPARSE) {
- *pobject_type = DT_LNK;
- tmp_inode->i_mode |= S_IFLNK; */
- } else {
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- if (attr & ATTR_READONLY)
- tmp_inode->i_mode &= ~(S_IWUGO);
- else if ((tmp_inode->i_mode & S_IWUGO) == 0)
- /* the ATTR_READONLY flag may have been changed on */
- /* server -- set any w bits allowed by mnt_file_mode */
- tmp_inode->i_mode |= (S_IWUGO & cifs_sb->mnt_file_mode);
- } /* could add code here - to validate if device or weird share type? */
-
- /* can not fill in nlink here as in qpathinfo version and Unx search */
- if (atomic_read(&cifsInfo->inUse) == 0)
- atomic_set(&cifsInfo->inUse, 1);
-
- 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);
-
- /* 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"));
+ if (fattr->cf_cifsattrs & ATTR_READONLY)
+ fattr->cf_mode &= ~S_IWUGO;
+
+ 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 {
- /* file may have changed on server */
- cFYI(1, ("invalidate inode, readdir detected change"));
- invalidate_remote_inode(tmp_inode);
+ /*
+ * trying to get the type and mode via SFU can be slow,
+ * so just call those regular files for now, and mark
+ * for reval
+ */
+ fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
}
- } else if (S_ISDIR(tmp_inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- tmp_inode->i_op = &cifs_dir_inode_ops;
- tmp_inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(tmp_inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- tmp_inode->i_op = &cifs_symlink_inode_ops;
- } else {
- cFYI(1, ("Init special inode"));
- init_special_inode(tmp_inode, tmp_inode->i_mode,
- tmp_inode->i_rdev);
}
}
-static void unix_fill_in_inode(struct inode *tmp_inode,
- FILE_UNIX_INFO *pfindData, unsigned int *pobject_type, int isNewInode)
+static void
+cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
+ struct cifs_sb_info *cifs_sb)
{
- loff_t local_size;
- struct timespec local_mtime;
-
- struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
- struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
-
- __u32 type = le32_to_cpu(pfindData->Type);
- __u64 num_of_bytes = le64_to_cpu(pfindData->NumOfBytes);
- __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
- cifsInfo->time = jiffies;
- atomic_inc(&cifsInfo->inUse);
-
- /* save mtime and size */
- local_mtime = tmp_inode->i_mtime;
- local_size = tmp_inode->i_size;
-
- tmp_inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
- tmp_inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastModificationTime));
- tmp_inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastStatusChange));
-
- tmp_inode->i_mode = le64_to_cpu(pfindData->Permissions);
- /* since we set the inode type below we need to mask off type
- to avoid strange results if bits above were corrupt */
- tmp_inode->i_mode &= ~S_IFMT;
- if (type == UNIX_FILE) {
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- } else if (type == UNIX_SYMLINK) {
- *pobject_type = DT_LNK;
- tmp_inode->i_mode |= S_IFLNK;
- } else if (type == UNIX_DIR) {
- *pobject_type = DT_DIR;
- tmp_inode->i_mode |= S_IFDIR;
- } else if (type == UNIX_CHARDEV) {
- *pobject_type = DT_CHR;
- tmp_inode->i_mode |= S_IFCHR;
- tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
- le64_to_cpu(pfindData->DevMinor) & MINORMASK);
- } else if (type == UNIX_BLOCKDEV) {
- *pobject_type = DT_BLK;
- tmp_inode->i_mode |= S_IFBLK;
- tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
- le64_to_cpu(pfindData->DevMinor) & MINORMASK);
- } else if (type == UNIX_FIFO) {
- *pobject_type = DT_FIFO;
- tmp_inode->i_mode |= S_IFIFO;
- } else if (type == UNIX_SOCKET) {
- *pobject_type = DT_SOCK;
- tmp_inode->i_mode |= S_IFSOCK;
- } else {
- /* safest to just call it a file */
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- cFYI(1, ("unknown inode type %d", type));
- }
+ 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);
+}
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
- tmp_inode->i_uid = cifs_sb->mnt_uid;
- else
- tmp_inode->i_uid = le64_to_cpu(pfindData->Uid);
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
- tmp_inode->i_gid = cifs_sb->mnt_gid;
- else
- tmp_inode->i_gid = le64_to_cpu(pfindData->Gid);
- tmp_inode->i_nlink = le64_to_cpu(pfindData->Nlinks);
-
- 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);
-
- /* 512 bytes (2**9) is the fake blocksize that must be used */
- /* for this calculation, not the real blocksize */
- tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
- }
- spin_unlock(&tmp_inode->i_lock);
+static 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;
- if (S_ISREG(tmp_inode->i_mode)) {
- cFYI(1, ("File inode"));
- tmp_inode->i_op = &cifs_file_inode_ops;
+ 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);
- 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 we have not started caching readahead
- file data for it 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);
+ 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
+ resolve NT_STATUS_STOPPED_ON_SYMLINK return code when
+ we try to do FindFirst on (NTFS) directory symlinks */
+/*
+int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
+ int xid)
+{
+ __u16 fid;
+ int len;
+ int oplock = 0;
+ int rc;
+ struct cifsTconInfo *ptcon = cifs_sb->tcon;
+ char *tmpbuffer;
+
+ rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
+ OPEN_REPARSE_POINT, &fid, &oplock, NULL,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (!rc) {
+ tmpbuffer = kmalloc(maxpath);
+ rc = CIFSSMBQueryReparseLinkInfo(xid, ptcon, full_path,
+ tmpbuffer,
+ maxpath -1,
+ fid,
+ cifs_sb->local_nls);
+ if (CIFSSMBClose(xid, ptcon, fid)) {
+ cFYI(1, ("Error closing temporary reparsepoint open)"));
}
- } else if (S_ISDIR(tmp_inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- tmp_inode->i_op = &cifs_dir_inode_ops;
- tmp_inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(tmp_inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- tmp_inode->i_op = &cifs_symlink_inode_ops;
-/* tmp_inode->i_fop = *//* do not need to set to anything */
- } else {
- cFYI(1, ("Special inode"));
- init_special_inode(tmp_inode, tmp_inode->i_mode,
- tmp_inode->i_rdev);
}
}
+ */
static int initiate_cifs_search(const int xid, struct file *file)
{
if (file->private_data == NULL)
return -ENOMEM;
cifsFile = file->private_data;
- cifsFile->invalidHandle = TRUE;
- cifsFile->srch_inf.endOfSearch = FALSE;
+ cifsFile->invalidHandle = true;
+ cifsFile->srch_inf.endOfSearch = false;
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
if (cifs_sb == NULL)
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb));
if (rc == 0)
- cifsFile->invalidHandle = FALSE;
- if ((rc == -EOPNOTSUPP) &&
+ cifsFile->invalidHandle = false;
+ /* BB add following call to handle readdir on new NTFS symlink errors
+ else if STATUS_STOPPED_ON_SYMLINK
+ call get_symlink_reparse_path and retry with new path */
+ else if ((rc == -EOPNOTSUPP) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
goto ffirst_retry;
}
+static 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 if (level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pFindData =
+ (FIND_FILE_STANDARD_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ /* one byte length, no name conversion */
+ len = (unsigned int)pFindData->FileNameLength;
+ cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
+ } 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;
+}
+
/* 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
(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);
- kfree(cifsFile->search_resume_name);
- cifsFile->search_resume_name = NULL;
+ write_lock(&GlobalSMBSeslock);
+ if (!cifsFile->srch_inf.endOfSearch &&
+ !cifsFile->invalidHandle) {
+ cifsFile->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
+ CIFSFindClose(xid, pTcon, cifsFile->netfid);
+ } else
+ write_unlock(&GlobalSMBSeslock);
if (cifsFile->srch_inf.ntwrk_buf_start) {
cFYI(1, ("freeing SMB ff cache buf on search rewind"));
if (cifsFile->srch_inf.smallBuf)
else
cifs_buf_release(cifsFile->srch_inf.
ntwrk_buf_start);
+ cifsFile->srch_inf.ntwrk_buf_start = NULL;
}
rc = initiate_cifs_search(xid, file);
if (rc) {
rc));
return rc;
}
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
}
while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
- (rc == 0) && (cifsFile->srch_inf.endOfSearch == FALSE)) {
+ (rc == 0) && !cifsFile->srch_inf.endOfSearch) {
cFYI(1, ("calling findnext2"));
rc = CIFSFindNext(xid, pTcon, cifsFile->netfid,
&cifsFile->srch_inf);
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
if (rc)
return -ENOENT;
}
/* 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 cifs_sb_info *cifs_sb, int max_len, ino_t *pinum)
+ struct cifs_sb_info *cifs_sb, unsigned int max_len, __u64 *pinum)
{
int rc = 0;
unsigned int len = 0;
len = strnlen(filename, PATH_MAX);
}
- /* BB fixme - hash low and high 32 bits if not 64 bit arch BB */
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
- *pinum = pFindData->UniqueId;
+ *pinum = le64_to_cpu(pFindData->basic.UniqueId);
} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
FILE_DIRECTORY_INFO *pFindData =
(FILE_DIRECTORY_INFO *)current_entry;
(SEARCH_ID_FULL_DIR_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
- *pinum = pFindData->UniqueId;
+ *pinum = le64_to_cpu(pFindData->UniqueId);
} else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
FILE_BOTH_DIRECTORY_INFO *pFindData =
(FILE_BOTH_DIRECTORY_INFO *)current_entry;
}
if (unicode) {
- /* BB fixme - test with long names */
- /* Note converted filename can be longer than in unicode */
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
- pqst->len = cifs_convertUCSpath((char *)pqst->name,
- (__le16 *)filename, len/2, nlt);
- else
- pqst->len = cifs_strfromUCS_le((char *)pqst->name,
- (__le16 *)filename, len/2, nlt);
+ pqst->len = cifs_from_ucs2((char *) pqst->name,
+ (__le16 *) filename,
+ UNICODE_NAME_MAX,
+ min(len, max_len), nlt,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
} else {
pqst->name = filename;
pqst->len = len;
return rc;
}
-static int cifs_filldir(char *pfindEntry, struct file *file,
- filldir_t filldir, void *direntry, char *scratch_buf, int max_len)
+static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir,
+ void *direntry, char *scratch_buf, unsigned int max_len)
{
int rc = 0;
struct qstr qstring;
struct cifsFileInfo *pCifsF;
- unsigned int obj_type;
- ino_t 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;
/* get filename and len into qstring */
/* get dentry */
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;
- 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);
- }
-
- /* we pass in rc below, indicating whether it is a new inode,
- so we can figure out whether to invalidate the inode cached
- data if the file has changed */
if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX)
- unix_fill_in_inode(tmp_inode,
- (FILE_UNIX_INFO *)pfindEntry,
- &obj_type, rc);
+ cifs_unix_basic_to_fattr(&fattr,
+ &((FILE_UNIX_INFO *) pfindEntry)->basic,
+ cifs_sb);
else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD)
- fill_in_inode(tmp_inode, 0 /* old level 1 buffer type */,
- pfindEntry, &obj_type, rc);
+ cifs_std_info_to_fattr(&fattr, (FIND_FILE_STANDARD_INFO *)
+ pfindEntry, cifs_sb);
else
- fill_in_inode(tmp_inode, 1 /* NT */, pfindEntry, &obj_type, rc);
+ cifs_dir_info_to_fattr(&fattr, (FILE_DIRECTORY_INFO *)
+ pfindEntry, cifs_sb);
- if (rc) /* new inode - needs to be tied to dentry */ {
- 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(fattr.cf_uniqueid);
+ tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring, &fattr);
rc = filldir(direntry, qstring.name, qstring.len, file->f_pos,
- tmp_inode->i_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;
}
-
dput(tmp_dentry);
return rc;
}
-static 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 if (level == SMB_FIND_FILE_INFO_STANDARD) {
- FIND_FILE_STANDARD_INFO *pFindData =
- (FIND_FILE_STANDARD_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- /* one byte length, no name conversion */
- len = (unsigned int)pFindData->FileNameLength;
- cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
- } 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_readdir(struct file *file, void *direntry, filldir_t filldir)
{
int num_to_fill = 0;
char *tmp_buf = NULL;
char *end_of_smb;
- int max_len;
+ unsigned int max_len;
xid = GetXid();
break;
}
} /* else {
- cifsFile->invalidHandle = TRUE;
+ cifsFile->invalidHandle = true;
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
- kfree(cifsFile->search_resume_name);
- cifsFile->search_resume_name = NULL; */
+ } */
rc = find_cifs_entry(xid, pTcon, file,
¤t_entry, &num_to_fill);
cifsFile->srch_inf.ntwrk_buf_start);
end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + max_len;
- /* To be safe - for UCS to UTF-8 with strings loaded
- with the rare long characters alloc more to account for
- such multibyte target UTF-8 characters. cifs_unicode.c,
- which actually does the conversion, has the same limit */
- tmp_buf = kmalloc((2 * NAME_MAX) + 4, GFP_KERNEL);
+ tmp_buf = kmalloc(UNICODE_NAME_MAX, GFP_KERNEL);
for (i = 0; (i < num_to_fill) && (rc == 0); i++) {
if (current_entry == NULL) {
/* evaluate whether this case is an error */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff