static int
cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
- struct cifs_tcon *tcon, unsigned int f_flags, __u32 *poplock,
- __u16 *pnetfid, unsigned int xid)
+ struct cifs_tcon *tcon, unsigned int f_flags, __u32 *oplock,
+ struct cifs_fid *fid, unsigned int xid)
{
int rc;
- int desiredAccess;
+ int desired_access;
int disposition;
int create_options = CREATE_NOT_DIR;
FILE_ALL_INFO *buf;
- desiredAccess = cifs_convert_flags(f_flags);
+ if (!tcon->ses->server->ops->open)
+ return -ENOSYS;
+
+ desired_access = cifs_convert_flags(f_flags);
/*********************************************************************
* open flag mapping table:
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- if (tcon->ses->capabilities & CAP_NT_SMBS)
- rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
- desiredAccess, create_options, pnetfid, poplock, buf,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
- & CIFS_MOUNT_MAP_SPECIAL_CHR);
- else
- rc = SMBLegacyOpen(xid, tcon, full_path, disposition,
- desiredAccess, CREATE_NOT_DIR, pnetfid, poplock, buf,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
- & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ rc = tcon->ses->server->ops->open(xid, tcon, full_path, disposition,
+ desired_access, create_options, fid,
+ oplock, buf, cifs_sb);
if (rc)
goto out;
xid);
else
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
- xid, pnetfid);
+ xid, &fid->netfid);
out:
kfree(buf);
}
struct cifsFileInfo *
-cifs_new_fileinfo(__u16 fileHandle, struct file *file,
+cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
struct tcon_link *tlink, __u32 oplock)
{
struct dentry *dentry = file->f_path.dentry;
struct inode *inode = dentry->d_inode;
- struct cifsInodeInfo *pCifsInode = CIFS_I(inode);
- struct cifsFileInfo *pCifsFile;
-
- pCifsFile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
- if (pCifsFile == NULL)
- return pCifsFile;
-
- pCifsFile->count = 1;
- pCifsFile->netfid = fileHandle;
- pCifsFile->pid = current->tgid;
- pCifsFile->uid = current_fsuid();
- pCifsFile->dentry = dget(dentry);
- pCifsFile->f_flags = file->f_flags;
- pCifsFile->invalidHandle = false;
- pCifsFile->tlink = cifs_get_tlink(tlink);
- mutex_init(&pCifsFile->fh_mutex);
- INIT_WORK(&pCifsFile->oplock_break, cifs_oplock_break);
- INIT_LIST_HEAD(&pCifsFile->llist);
+ struct cifsInodeInfo *cinode = CIFS_I(inode);
+ struct cifsFileInfo *cfile;
+
+ cfile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
+ if (cfile == NULL)
+ return cfile;
+
+ cfile->count = 1;
+ cfile->pid = current->tgid;
+ cfile->uid = current_fsuid();
+ cfile->dentry = dget(dentry);
+ cfile->f_flags = file->f_flags;
+ cfile->invalidHandle = false;
+ cfile->tlink = cifs_get_tlink(tlink);
+ mutex_init(&cfile->fh_mutex);
+ INIT_WORK(&cfile->oplock_break, cifs_oplock_break);
+ INIT_LIST_HEAD(&cfile->llist);
+ tlink_tcon(tlink)->ses->server->ops->set_fid(cfile, fid, oplock);
spin_lock(&cifs_file_list_lock);
- list_add(&pCifsFile->tlist, &(tlink_tcon(tlink)->openFileList));
+ list_add(&cfile->tlist, &(tlink_tcon(tlink)->openFileList));
/* if readable file instance put first in list*/
if (file->f_mode & FMODE_READ)
- list_add(&pCifsFile->flist, &pCifsInode->openFileList);
+ list_add(&cfile->flist, &cinode->openFileList);
else
- list_add_tail(&pCifsFile->flist, &pCifsInode->openFileList);
+ list_add_tail(&cfile->flist, &cinode->openFileList);
spin_unlock(&cifs_file_list_lock);
- cifs_set_oplock_level(pCifsInode, oplock);
- pCifsInode->can_cache_brlcks = pCifsInode->clientCanCacheAll;
-
- file->private_data = pCifsFile;
- return pCifsFile;
+ file->private_data = cfile;
+ return cfile;
}
static void cifs_del_lock_waiters(struct cifsLockInfo *lock);
if (list_empty(&cifsi->openFileList)) {
cFYI(1, "closing last open instance for inode %p",
cifs_file->dentry->d_inode);
-
- /* in strict cache mode we need invalidate mapping on the last
- close because it may cause a error when we open this file
- again and get at least level II oplock */
+ /*
+ * In strict cache mode we need invalidate mapping on the last
+ * close because it may cause a error when we open this file
+ * again and get at least level II oplock.
+ */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
CIFS_I(inode)->invalid_mapping = true;
-
cifs_set_oplock_level(cifsi, 0);
}
spin_unlock(&cifs_file_list_lock);
cancel_work_sync(&cifs_file->oplock_break);
if (!tcon->need_reconnect && !cifs_file->invalidHandle) {
+ struct TCP_Server_Info *server = tcon->ses->server;
unsigned int xid;
- int rc;
+ int rc = -ENOSYS;
+
xid = get_xid();
- rc = CIFSSMBClose(xid, tcon, cifs_file->netfid);
+ if (server->ops->close)
+ rc = server->ops->close(xid, tcon, &cifs_file->fid);
free_xid(xid);
}
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
struct tcon_link *tlink;
- struct cifsFileInfo *pCifsFile = NULL;
+ struct cifsFileInfo *cfile = NULL;
char *full_path = NULL;
bool posix_open_ok = false;
- __u16 netfid;
+ struct cifs_fid fid;
xid = get_xid();
/* can not refresh inode info since size could be stale */
rc = cifs_posix_open(full_path, &inode, inode->i_sb,
cifs_sb->mnt_file_mode /* ignored */,
- file->f_flags, &oplock, &netfid, xid);
+ file->f_flags, &oplock, &fid.netfid, xid);
if (rc == 0) {
cFYI(1, "posix open succeeded");
posix_open_ok = true;
} else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP)) /* path not found or net err */
goto out;
- /* else fallthrough to retry open the old way on network i/o
- or DFS errors */
+ /*
+ * Else fallthrough to retry open the old way on network i/o
+ * or DFS errors.
+ */
}
if (!posix_open_ok) {
rc = cifs_nt_open(full_path, inode, cifs_sb, tcon,
- file->f_flags, &oplock, &netfid, xid);
+ file->f_flags, &oplock, &fid, xid);
if (rc)
goto out;
}
- pCifsFile = cifs_new_fileinfo(netfid, file, tlink, oplock);
- if (pCifsFile == NULL) {
- CIFSSMBClose(xid, tcon, netfid);
+ cfile = cifs_new_fileinfo(&fid, file, tlink, oplock);
+ if (cfile == NULL) {
+ if (tcon->ses->server->ops->close)
+ tcon->ses->server->ops->close(xid, tcon, &fid);
rc = -ENOMEM;
goto out;
}
cifs_fscache_set_inode_cookie(inode, file);
if ((oplock & CIFS_CREATE_ACTION) && !posix_open_ok && tcon->unix_ext) {
- /* time to set mode which we can not set earlier due to
- problems creating new read-only files */
+ /*
+ * Time to set mode which we can not set earlier due to
+ * problems creating new read-only files.
+ */
struct cifs_unix_set_info_args args = {
.mode = inode->i_mode,
.uid = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
.device = 0,
};
- CIFSSMBUnixSetFileInfo(xid, tcon, &args, netfid,
- pCifsFile->pid);
+ CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid.netfid,
+ cfile->pid);
}
out:
return rc;
}
-/* Try to reacquire byte range locks that were released when session */
-/* to server was lost */
+/*
+ * Try to reacquire byte range locks that were released when session
+ * to server was lost
+ */
static int cifs_relock_file(struct cifsFileInfo *cifsFile)
{
int rc = 0;
-/* BB list all locks open on this file and relock */
+ /* BB list all locks open on this file and relock */
return rc;
}
-static int cifs_reopen_file(struct cifsFileInfo *pCifsFile, bool can_flush)
+static int
+cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
{
int rc = -EACCES;
unsigned int xid;
__u32 oplock;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
- struct cifsInodeInfo *pCifsInode;
+ struct TCP_Server_Info *server;
+ struct cifsInodeInfo *cinode;
struct inode *inode;
char *full_path = NULL;
- int desiredAccess;
+ int desired_access;
int disposition = FILE_OPEN;
int create_options = CREATE_NOT_DIR;
- __u16 netfid;
+ struct cifs_fid fid;
xid = get_xid();
- mutex_lock(&pCifsFile->fh_mutex);
- if (!pCifsFile->invalidHandle) {
- mutex_unlock(&pCifsFile->fh_mutex);
+ mutex_lock(&cfile->fh_mutex);
+ if (!cfile->invalidHandle) {
+ mutex_unlock(&cfile->fh_mutex);
rc = 0;
free_xid(xid);
return rc;
}
- inode = pCifsFile->dentry->d_inode;
+ inode = cfile->dentry->d_inode;
cifs_sb = CIFS_SB(inode->i_sb);
- tcon = tlink_tcon(pCifsFile->tlink);
+ tcon = tlink_tcon(cfile->tlink);
+ server = tcon->ses->server;
-/* can not grab rename sem here because various ops, including
- those that already have the rename sem can end up causing writepage
- to get called and if the server was down that means we end up here,
- and we can never tell if the caller already has the rename_sem */
- full_path = build_path_from_dentry(pCifsFile->dentry);
+ /*
+ * Can not grab rename sem here because various ops, including those
+ * that already have the rename sem can end up causing writepage to get
+ * called and if the server was down that means we end up here, and we
+ * can never tell if the caller already has the rename_sem.
+ */
+ full_path = build_path_from_dentry(cfile->dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- mutex_unlock(&pCifsFile->fh_mutex);
+ mutex_unlock(&cfile->fh_mutex);
free_xid(xid);
return rc;
}
- cFYI(1, "inode = 0x%p file flags 0x%x for %s",
- inode, pCifsFile->f_flags, full_path);
+ cFYI(1, "inode = 0x%p file flags 0x%x for %s", inode, cfile->f_flags,
+ full_path);
if (tcon->ses->server->oplocks)
oplock = REQ_OPLOCK;
* O_CREAT, O_EXCL and O_TRUNC already had their effect on the
* original open. Must mask them off for a reopen.
*/
- unsigned int oflags = pCifsFile->f_flags &
+ unsigned int oflags = cfile->f_flags &
~(O_CREAT | O_EXCL | O_TRUNC);
rc = cifs_posix_open(full_path, NULL, inode->i_sb,
- cifs_sb->mnt_file_mode /* ignored */,
- oflags, &oplock, &netfid, xid);
+ cifs_sb->mnt_file_mode /* ignored */,
+ oflags, &oplock, &fid.netfid, xid);
if (rc == 0) {
cFYI(1, "posix reopen succeeded");
goto reopen_success;
}
- /* fallthrough to retry open the old way on errors, especially
- in the reconnect path it is important to retry hard */
+ /*
+ * fallthrough to retry open the old way on errors, especially
+ * in the reconnect path it is important to retry hard
+ */
}
- desiredAccess = cifs_convert_flags(pCifsFile->f_flags);
+ desired_access = cifs_convert_flags(cfile->f_flags);
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- /* Can not refresh inode by passing in file_info buf to be returned
- by SMBOpen and then calling get_inode_info with returned buf
- since file might have write behind data that needs to be flushed
- and server version of file size can be stale. If we knew for sure
- that inode was not dirty locally we could do this */
-
- rc = CIFSSMBOpen(xid, tcon, full_path, disposition, desiredAccess,
- create_options, &netfid, &oplock, NULL,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ /*
+ * Can not refresh inode by passing in file_info buf to be returned by
+ * CIFSSMBOpen and then calling get_inode_info with returned buf since
+ * file might have write behind data that needs to be flushed and server
+ * version of file size can be stale. If we knew for sure that inode was
+ * not dirty locally we could do this.
+ */
+ rc = server->ops->open(xid, tcon, full_path, disposition,
+ desired_access, create_options, &fid, &oplock,
+ NULL, cifs_sb);
if (rc) {
- mutex_unlock(&pCifsFile->fh_mutex);
- cFYI(1, "cifs_open returned 0x%x", rc);
+ mutex_unlock(&cfile->fh_mutex);
+ cFYI(1, "cifs_reopen returned 0x%x", rc);
cFYI(1, "oplock: %d", oplock);
goto reopen_error_exit;
}
reopen_success:
- pCifsFile->netfid = netfid;
- pCifsFile->invalidHandle = false;
- mutex_unlock(&pCifsFile->fh_mutex);
- pCifsInode = CIFS_I(inode);
+ cfile->invalidHandle = false;
+ mutex_unlock(&cfile->fh_mutex);
+ cinode = CIFS_I(inode);
if (can_flush) {
rc = filemap_write_and_wait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
if (tcon->unix_ext)
- rc = cifs_get_inode_info_unix(&inode,
- full_path, inode->i_sb, xid);
+ rc = cifs_get_inode_info_unix(&inode, full_path,
+ inode->i_sb, xid);
else
- rc = cifs_get_inode_info(&inode,
- full_path, NULL, inode->i_sb,
- xid, NULL);
- } /* else we are writing out data to server already
- and could deadlock if we tried to flush data, and
- since we do not know if we have data that would
- invalidate the current end of file on the server
- we can not go to the server to get the new inod
- info */
-
- cifs_set_oplock_level(pCifsInode, oplock);
+ rc = cifs_get_inode_info(&inode, full_path, NULL,
+ inode->i_sb, xid, NULL);
+ }
+ /*
+ * Else we are writing out data to server already and could deadlock if
+ * we tried to flush data, and since we do not know if we have data that
+ * would invalidate the current end of file on the server we can not go
+ * to the server to get the new inode info.
+ */
- cifs_relock_file(pCifsFile);
+ server->ops->set_fid(cfile, &fid, oplock);
+ cifs_relock_file(cfile);
reopen_error_exit:
kfree(full_path);
{
int rc = 0;
unsigned int xid;
- struct cifsFileInfo *pCFileStruct = file->private_data;
- char *ptmp;
+ struct cifsFileInfo *cfile = file->private_data;
+ struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
+ char *buf;
cFYI(1, "Closedir inode = 0x%p", inode);
+ if (cfile == NULL)
+ return rc;
+
xid = get_xid();
+ tcon = tlink_tcon(cfile->tlink);
+ server = tcon->ses->server;
- if (pCFileStruct) {
- struct cifs_tcon *pTcon = tlink_tcon(pCFileStruct->tlink);
+ cFYI(1, "Freeing private data in close dir");
+ spin_lock(&cifs_file_list_lock);
+ if (!cfile->srch_inf.endOfSearch && !cfile->invalidHandle) {
+ cfile->invalidHandle = true;
+ spin_unlock(&cifs_file_list_lock);
+ if (server->ops->close_dir)
+ rc = server->ops->close_dir(xid, tcon, &cfile->fid);
+ else
+ rc = -ENOSYS;
+ cFYI(1, "Closing uncompleted readdir with rc %d", rc);
+ /* not much we can do if it fails anyway, ignore rc */
+ rc = 0;
+ } else
+ spin_unlock(&cifs_file_list_lock);
- cFYI(1, "Freeing private data in close dir");
- spin_lock(&cifs_file_list_lock);
- if (!pCFileStruct->srch_inf.endOfSearch &&
- !pCFileStruct->invalidHandle) {
- pCFileStruct->invalidHandle = true;
- spin_unlock(&cifs_file_list_lock);
- rc = CIFSFindClose(xid, pTcon, pCFileStruct->netfid);
- cFYI(1, "Closing uncompleted readdir with rc %d",
- rc);
- /* not much we can do if it fails anyway, ignore rc */
- rc = 0;
- } else
- spin_unlock(&cifs_file_list_lock);
- ptmp = pCFileStruct->srch_inf.ntwrk_buf_start;
- if (ptmp) {
- cFYI(1, "closedir free smb buf in srch struct");
- pCFileStruct->srch_inf.ntwrk_buf_start = NULL;
- if (pCFileStruct->srch_inf.smallBuf)
- cifs_small_buf_release(ptmp);
- else
- cifs_buf_release(ptmp);
- }
- cifs_put_tlink(pCFileStruct->tlink);
- kfree(file->private_data);
- file->private_data = NULL;
+ buf = cfile->srch_inf.ntwrk_buf_start;
+ if (buf) {
+ cFYI(1, "closedir free smb buf in srch struct");
+ cfile->srch_inf.ntwrk_buf_start = NULL;
+ if (cfile->srch_inf.smallBuf)
+ cifs_small_buf_release(buf);
+ else
+ cifs_buf_release(buf);
}
+
+ cifs_put_tlink(cfile->tlink);
+ kfree(file->private_data);
+ file->private_data = NULL;
/* BB can we lock the filestruct while this is going on? */
free_xid(xid);
return rc;
if (!buf) {
mutex_unlock(&cinode->lock_mutex);
free_xid(xid);
- return rc;
+ return -ENOMEM;
}
for (i = 0; i < 2; i++) {
cur->OffsetLow = cpu_to_le32((u32)li->offset);
cur->OffsetHigh = cpu_to_le32((u32)(li->offset>>32));
if (++num == max_num) {
- stored_rc = cifs_lockv(xid, tcon, cfile->netfid,
+ stored_rc = cifs_lockv(xid, tcon,
+ cfile->fid.netfid,
(__u8)li->type, 0, num,
buf);
if (stored_rc)
}
if (num) {
- stored_rc = cifs_lockv(xid, tcon, cfile->netfid,
+ stored_rc = cifs_lockv(xid, tcon, cfile->fid.netfid,
(__u8)types[i], 0, num, buf);
if (stored_rc)
rc = stored_rc;
type = CIFS_WRLCK;
lck = list_entry(el, struct lock_to_push, llist);
lck->pid = flock->fl_pid;
- lck->netfid = cfile->netfid;
+ lck->netfid = cfile->fid.netfid;
lck->length = length;
lck->type = type;
lck->offset = flock->fl_start;
cifs_mandatory_lock(unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
__u64 length, __u32 type, int lock, int unlock, bool wait)
{
- return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->netfid,
+ return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
current->tgid, length, offset, unlock, lock,
(__u8)type, wait, 0);
}
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
- __u16 netfid = cfile->netfid;
+ __u16 netfid = cfile->fid.netfid;
if (posix_lck) {
int posix_lock_type;
*/
list_move(&li->llist, &tmp_llist);
if (++num == max_num) {
- stored_rc = cifs_lockv(xid, tcon, cfile->netfid,
+ stored_rc = cifs_lockv(xid, tcon,
+ cfile->fid.netfid,
li->type, num, 0, buf);
if (stored_rc) {
/*
cur++;
}
if (num) {
- stored_rc = cifs_lockv(xid, tcon, cfile->netfid,
+ stored_rc = cifs_lockv(xid, tcon, cfile->fid.netfid,
types[i], num, 0, buf);
if (stored_rc) {
cifs_move_llist(&tmp_llist, &cfile->llist);
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
- __u16 netfid = cfile->netfid;
+ __u16 netfid = cfile->fid.netfid;
if (posix_lck) {
int posix_lock_type;
tcon->ses->server);
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
- netfid = cfile->netfid;
+ netfid = cfile->fid.netfid;
cinode = CIFS_I(file->f_path.dentry->d_inode);
if (cap_unix(tcon->ses) &&
cifsi->server_eof = end_of_write;
}
-static ssize_t cifs_write(struct cifsFileInfo *open_file, __u32 pid,
- const char *write_data, size_t write_size,
- loff_t *poffset)
+static ssize_t
+cifs_write(struct cifsFileInfo *open_file, __u32 pid, const char *write_data,
+ size_t write_size, loff_t *offset)
{
int rc = 0;
unsigned int bytes_written = 0;
unsigned int total_written;
struct cifs_sb_info *cifs_sb;
- struct cifs_tcon *pTcon;
+ struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
unsigned int xid;
struct dentry *dentry = open_file->dentry;
struct cifsInodeInfo *cifsi = CIFS_I(dentry->d_inode);
cifs_sb = CIFS_SB(dentry->d_sb);
cFYI(1, "write %zd bytes to offset %lld of %s", write_size,
- *poffset, dentry->d_name.name);
+ *offset, dentry->d_name.name);
+
+ tcon = tlink_tcon(open_file->tlink);
+ server = tcon->ses->server;
- pTcon = tlink_tcon(open_file->tlink);
+ if (!server->ops->sync_write)
+ return -ENOSYS;
xid = get_xid();
/* iov[0] is reserved for smb header */
iov[1].iov_base = (char *)write_data + total_written;
iov[1].iov_len = len;
- io_parms.netfid = open_file->netfid;
io_parms.pid = pid;
- io_parms.tcon = pTcon;
- io_parms.offset = *poffset;
+ io_parms.tcon = tcon;
+ io_parms.offset = *offset;
io_parms.length = len;
- rc = CIFSSMBWrite2(xid, &io_parms, &bytes_written, iov,
- 1, 0);
+ rc = server->ops->sync_write(xid, open_file, &io_parms,
+ &bytes_written, iov, 1);
}
if (rc || (bytes_written == 0)) {
if (total_written)
}
} else {
spin_lock(&dentry->d_inode->i_lock);
- cifs_update_eof(cifsi, *poffset, bytes_written);
+ cifs_update_eof(cifsi, *offset, bytes_written);
spin_unlock(&dentry->d_inode->i_lock);
- *poffset += bytes_written;
+ *offset += bytes_written;
}
}
- cifs_stats_bytes_written(pTcon, total_written);
+ cifs_stats_bytes_written(tcon, total_written);
if (total_written > 0) {
spin_lock(&dentry->d_inode->i_lock);
- if (*poffset > dentry->d_inode->i_size)
- i_size_write(dentry->d_inode, *poffset);
+ if (*offset > dentry->d_inode->i_size)
+ i_size_write(dentry->d_inode, *offset);
spin_unlock(&dentry->d_inode->i_lock);
}
mark_inode_dirty_sync(dentry->d_inode);
return rc;
}
-/*
- * Marshal up the iov array, reserving the first one for the header. Also,
- * set wdata->bytes.
- */
-static void
-cifs_writepages_marshal_iov(struct kvec *iov, struct cifs_writedata *wdata)
-{
- int i;
- struct inode *inode = wdata->cfile->dentry->d_inode;
- loff_t size = i_size_read(inode);
-
- /* marshal up the pages into iov array */
- wdata->bytes = 0;
- for (i = 0; i < wdata->nr_pages; i++) {
- iov[i + 1].iov_len = min(size - page_offset(wdata->pages[i]),
- (loff_t)PAGE_CACHE_SIZE);
- iov[i + 1].iov_base = kmap(wdata->pages[i]);
- wdata->bytes += iov[i + 1].iov_len;
- }
-}
-
static int cifs_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
bool done = false, scanned = false, range_whole = false;
pgoff_t end, index;
struct cifs_writedata *wdata;
+ struct TCP_Server_Info *server;
struct page *page;
int rc = 0;
+ loff_t isize = i_size_read(mapping->host);
/*
* If wsize is smaller than the page cache size, default to writing
*/
set_page_writeback(page);
- if (page_offset(page) >= mapping->host->i_size) {
+ if (page_offset(page) >= isize) {
done = true;
unlock_page(page);
end_page_writeback(page);
wdata->sync_mode = wbc->sync_mode;
wdata->nr_pages = nr_pages;
wdata->offset = page_offset(wdata->pages[0]);
- wdata->marshal_iov = cifs_writepages_marshal_iov;
+ wdata->pagesz = PAGE_CACHE_SIZE;
+ wdata->tailsz =
+ min(isize - page_offset(wdata->pages[nr_pages - 1]),
+ (loff_t)PAGE_CACHE_SIZE);
+ wdata->bytes = ((nr_pages - 1) * PAGE_CACHE_SIZE) +
+ wdata->tailsz;
do {
if (wdata->cfile != NULL)
break;
}
wdata->pid = wdata->cfile->pid;
- rc = cifs_async_writev(wdata);
+ server = tlink_tcon(wdata->cfile->tlink)->ses->server;
+ rc = server->ops->async_writev(wdata);
} while (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN);
for (i = 0; i < nr_pages; ++i)
unsigned int xid;
int rc = 0;
struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
struct cifsFileInfo *smbfile = file->private_data;
struct inode *inode = file->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
}
tcon = tlink_tcon(smbfile->tlink);
- if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
- rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)) {
+ server = tcon->ses->server;
+ if (server->ops->flush)
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
+ else
+ rc = -ENOSYS;
+ }
free_xid(xid);
mutex_unlock(&inode->i_mutex);
unsigned int xid;
int rc = 0;
struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
struct cifsFileInfo *smbfile = file->private_data;
struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
struct inode *inode = file->f_mapping->host;
file->f_path.dentry->d_name.name, datasync);
tcon = tlink_tcon(smbfile->tlink);
- if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
- rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)) {
+ server = tcon->ses->server;
+ if (server->ops->flush)
+ rc = server->ops->flush(xid, tcon, &smbfile->fid);
+ else
+ rc = -ENOSYS;
+ }
free_xid(xid);
mutex_unlock(&inode->i_mutex);
return num_pages;
}
-static void
-cifs_uncached_marshal_iov(struct kvec *iov, struct cifs_writedata *wdata)
-{
- int i;
- size_t bytes = wdata->bytes;
-
- /* marshal up the pages into iov array */
- for (i = 0; i < wdata->nr_pages; i++) {
- iov[i + 1].iov_len = min_t(size_t, bytes, PAGE_SIZE);
- iov[i + 1].iov_base = kmap(wdata->pages[i]);
- bytes -= iov[i + 1].iov_len;
- }
-}
-
static void
cifs_uncached_writev_complete(struct work_struct *work)
{
cifs_uncached_retry_writev(struct cifs_writedata *wdata)
{
int rc;
+ struct TCP_Server_Info *server;
+
+ server = tlink_tcon(wdata->cfile->tlink)->ses->server;
do {
if (wdata->cfile->invalidHandle) {
if (rc != 0)
continue;
}
- rc = cifs_async_writev(wdata);
+ rc = server->ops->async_writev(wdata);
} while (rc == -EAGAIN);
return rc;
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
+
+ if (!tcon->ses->server->ops->async_writev)
+ return -ENOSYS;
+
offset = *poffset;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
wdata->cfile = cifsFileInfo_get(open_file);
wdata->pid = pid;
wdata->bytes = cur_len;
- wdata->marshal_iov = cifs_uncached_marshal_iov;
+ wdata->pagesz = PAGE_SIZE;
+ wdata->tailsz = cur_len - ((nr_pages - 1) * PAGE_SIZE);
rc = cifs_uncached_retry_writev(wdata);
if (rc) {
kref_put(&wdata->refcount, cifs_writedata_release);
}
static struct cifs_readdata *
-cifs_readdata_alloc(unsigned int nr_vecs, work_func_t complete)
+cifs_readdata_alloc(unsigned int nr_pages, work_func_t complete)
{
struct cifs_readdata *rdata;
- rdata = kzalloc(sizeof(*rdata) +
- sizeof(struct kvec) * nr_vecs, GFP_KERNEL);
+ rdata = kzalloc(sizeof(*rdata) + (sizeof(struct page *) * nr_pages),
+ GFP_KERNEL);
if (rdata != NULL) {
kref_init(&rdata->refcount);
INIT_LIST_HEAD(&rdata->list);
init_completion(&rdata->done);
INIT_WORK(&rdata->work, complete);
- INIT_LIST_HEAD(&rdata->pages);
}
+
return rdata;
}
}
static int
-cifs_read_allocate_pages(struct list_head *list, unsigned int npages)
+cifs_read_allocate_pages(struct cifs_readdata *rdata, unsigned int nr_pages)
{
int rc = 0;
- struct page *page, *tpage;
+ struct page *page;
unsigned int i;
- for (i = 0; i < npages; i++) {
+ for (i = 0; i < nr_pages; i++) {
page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
if (!page) {
rc = -ENOMEM;
break;
}
- list_add(&page->lru, list);
+ rdata->pages[i] = page;
}
if (rc) {
- list_for_each_entry_safe(page, tpage, list, lru) {
- list_del(&page->lru);
- put_page(page);
+ for (i = 0; i < nr_pages; i++) {
+ put_page(rdata->pages[i]);
+ rdata->pages[i] = NULL;
}
}
return rc;
static void
cifs_uncached_readdata_release(struct kref *refcount)
{
- struct page *page, *tpage;
struct cifs_readdata *rdata = container_of(refcount,
struct cifs_readdata, refcount);
+ unsigned int i;
- list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
- list_del(&page->lru);
- put_page(page);
+ for (i = 0; i < rdata->nr_pages; i++) {
+ put_page(rdata->pages[i]);
+ rdata->pages[i] = NULL;
}
cifs_readdata_release(refcount);
}
cifs_retry_async_readv(struct cifs_readdata *rdata)
{
int rc;
+ struct TCP_Server_Info *server;
+
+ server = tlink_tcon(rdata->cfile->tlink)->ses->server;
do {
if (rdata->cfile->invalidHandle) {
if (rc != 0)
continue;
}
- rc = cifs_async_readv(rdata);
+ rc = server->ops->async_readv(rdata);
} while (rc == -EAGAIN);
return rc;
int rc = 0;
struct iov_iter ii;
size_t pos = rdata->offset - offset;
- struct page *page, *tpage;
ssize_t remaining = rdata->bytes;
unsigned char *pdata;
+ unsigned int i;
/* set up iov_iter and advance to the correct offset */
iov_iter_init(&ii, iov, nr_segs, iov_length(iov, nr_segs), 0);
iov_iter_advance(&ii, pos);
*copied = 0;
- list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
+ for (i = 0; i < rdata->nr_pages; i++) {
ssize_t copy;
+ struct page *page = rdata->pages[i];
/* copy a whole page or whatever's left */
copy = min_t(ssize_t, remaining, PAGE_SIZE);
iov_iter_advance(&ii, copy);
}
}
-
- list_del(&page->lru);
- put_page(page);
}
return rc;
struct cifs_readdata *rdata = container_of(work,
struct cifs_readdata, work);
- /* if the result is non-zero then the pages weren't kmapped */
- if (rdata->result == 0) {
- struct page *page;
-
- list_for_each_entry(page, &rdata->pages, lru)
- kunmap(page);
- }
-
complete(&rdata->done);
kref_put(&rdata->refcount, cifs_uncached_readdata_release);
}
static int
-cifs_uncached_read_marshal_iov(struct cifs_readdata *rdata,
- unsigned int remaining)
+cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
+ struct cifs_readdata *rdata, unsigned int len)
{
- int len = 0;
- struct page *page, *tpage;
+ int total_read = 0, result = 0;
+ unsigned int i;
+ unsigned int nr_pages = rdata->nr_pages;
+ struct kvec iov;
+
+ rdata->tailsz = PAGE_SIZE;
+ for (i = 0; i < nr_pages; i++) {
+ struct page *page = rdata->pages[i];
- rdata->nr_iov = 1;
- list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
- if (remaining >= PAGE_SIZE) {
+ if (len >= PAGE_SIZE) {
/* enough data to fill the page */
- rdata->iov[rdata->nr_iov].iov_base = kmap(page);
- rdata->iov[rdata->nr_iov].iov_len = PAGE_SIZE;
- cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu",
- rdata->nr_iov, page->index,
- rdata->iov[rdata->nr_iov].iov_base,
- rdata->iov[rdata->nr_iov].iov_len);
- ++rdata->nr_iov;
- len += PAGE_SIZE;
- remaining -= PAGE_SIZE;
- } else if (remaining > 0) {
+ iov.iov_base = kmap(page);
+ iov.iov_len = PAGE_SIZE;
+ cFYI(1, "%u: iov_base=%p iov_len=%zu",
+ i, iov.iov_base, iov.iov_len);
+ len -= PAGE_SIZE;
+ } else if (len > 0) {
/* enough for partial page, fill and zero the rest */
- rdata->iov[rdata->nr_iov].iov_base = kmap(page);
- rdata->iov[rdata->nr_iov].iov_len = remaining;
- cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu",
- rdata->nr_iov, page->index,
- rdata->iov[rdata->nr_iov].iov_base,
- rdata->iov[rdata->nr_iov].iov_len);
- memset(rdata->iov[rdata->nr_iov].iov_base + remaining,
- '\0', PAGE_SIZE - remaining);
- ++rdata->nr_iov;
- len += remaining;
- remaining = 0;
+ iov.iov_base = kmap(page);
+ iov.iov_len = len;
+ cFYI(1, "%u: iov_base=%p iov_len=%zu",
+ i, iov.iov_base, iov.iov_len);
+ memset(iov.iov_base + len, '\0', PAGE_SIZE - len);
+ rdata->tailsz = len;
+ len = 0;
} else {
/* no need to hold page hostage */
- list_del(&page->lru);
+ rdata->pages[i] = NULL;
+ rdata->nr_pages--;
put_page(page);
+ continue;
}
+
+ result = cifs_readv_from_socket(server, &iov, 1, iov.iov_len);
+ kunmap(page);
+ if (result < 0)
+ break;
+
+ total_read += result;
}
- return len;
+ return total_read > 0 ? total_read : result;
}
static ssize_t
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
+ if (!tcon->ses->server->ops->async_readv)
+ return -ENOSYS;
+
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
else
goto error;
}
- rc = cifs_read_allocate_pages(&rdata->pages, npages);
+ rc = cifs_read_allocate_pages(rdata, npages);
if (rc)
goto error;
rdata->cfile = cifsFileInfo_get(open_file);
+ rdata->nr_pages = npages;
rdata->offset = offset;
rdata->bytes = cur_len;
rdata->pid = pid;
- rdata->marshal_iov = cifs_uncached_read_marshal_iov;
+ rdata->pagesz = PAGE_SIZE;
+ rdata->read_into_pages = cifs_uncached_read_into_pages;
rc = cifs_retry_async_readv(rdata);
error:
cifs_stats_bytes_read(tcon, total_read);
*poffset += total_read;
+ /* mask nodata case */
+ if (rc == -ENODATA)
+ rc = 0;
+
return total_read ? total_read : rc;
}
return cifs_user_readv(iocb, iov, nr_segs, pos);
}
-static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
- loff_t *poffset)
+static ssize_t
+cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
{
int rc = -EACCES;
unsigned int bytes_read = 0;
unsigned int rsize;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
unsigned int xid;
- char *current_offset;
+ char *cur_offset;
struct cifsFileInfo *open_file;
struct cifs_io_parms io_parms;
int buf_type = CIFS_NO_BUFFER;
}
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
+ server = tcon->ses->server;
+
+ if (!server->ops->sync_read) {
+ free_xid(xid);
+ return -ENOSYS;
+ }
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
if ((file->f_flags & O_ACCMODE) == O_WRONLY)
cFYI(1, "attempting read on write only file instance");
- for (total_read = 0, current_offset = read_data;
- read_size > total_read;
- total_read += bytes_read, current_offset += bytes_read) {
+ for (total_read = 0, cur_offset = read_data; read_size > total_read;
+ total_read += bytes_read, cur_offset += bytes_read) {
current_read_size = min_t(uint, read_size - total_read, rsize);
/*
* For windows me and 9x we do not want to request more than it
if (rc != 0)
break;
}
- io_parms.netfid = open_file->netfid;
io_parms.pid = pid;
io_parms.tcon = tcon;
- io_parms.offset = *poffset;
+ io_parms.offset = *offset;
io_parms.length = current_read_size;
- rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
- ¤t_offset, &buf_type);
+ rc = server->ops->sync_read(xid, open_file, &io_parms,
+ &bytes_read, &cur_offset,
+ &buf_type);
}
if (rc || (bytes_read == 0)) {
if (total_read) {
}
} else {
cifs_stats_bytes_read(tcon, total_read);
- *poffset += bytes_read;
+ *offset += bytes_read;
}
}
free_xid(xid);
static void
cifs_readv_complete(struct work_struct *work)
{
+ unsigned int i;
struct cifs_readdata *rdata = container_of(work,
struct cifs_readdata, work);
- struct page *page, *tpage;
- list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
- list_del(&page->lru);
+ for (i = 0; i < rdata->nr_pages; i++) {
+ struct page *page = rdata->pages[i];
+
lru_cache_add_file(page);
if (rdata->result == 0) {
- kunmap(page);
flush_dcache_page(page);
SetPageUptodate(page);
}
cifs_readpage_to_fscache(rdata->mapping->host, page);
page_cache_release(page);
+ rdata->pages[i] = NULL;
}
kref_put(&rdata->refcount, cifs_readdata_release);
}
static int
-cifs_readpages_marshal_iov(struct cifs_readdata *rdata, unsigned int remaining)
+cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
+ struct cifs_readdata *rdata, unsigned int len)
{
- int len = 0;
- struct page *page, *tpage;
+ int total_read = 0, result = 0;
+ unsigned int i;
u64 eof;
pgoff_t eof_index;
+ unsigned int nr_pages = rdata->nr_pages;
+ struct kvec iov;
/* determine the eof that the server (probably) has */
eof = CIFS_I(rdata->mapping->host)->server_eof;
eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0;
cFYI(1, "eof=%llu eof_index=%lu", eof, eof_index);
- rdata->nr_iov = 1;
- list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
- if (remaining >= PAGE_CACHE_SIZE) {
+ rdata->tailsz = PAGE_CACHE_SIZE;
+ for (i = 0; i < nr_pages; i++) {
+ struct page *page = rdata->pages[i];
+
+ if (len >= PAGE_CACHE_SIZE) {
/* enough data to fill the page */
- rdata->iov[rdata->nr_iov].iov_base = kmap(page);
- rdata->iov[rdata->nr_iov].iov_len = PAGE_CACHE_SIZE;
+ iov.iov_base = kmap(page);
+ iov.iov_len = PAGE_CACHE_SIZE;
cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu",
- rdata->nr_iov, page->index,
- rdata->iov[rdata->nr_iov].iov_base,
- rdata->iov[rdata->nr_iov].iov_len);
- ++rdata->nr_iov;
- len += PAGE_CACHE_SIZE;
- remaining -= PAGE_CACHE_SIZE;
- } else if (remaining > 0) {
+ i, page->index, iov.iov_base, iov.iov_len);
+ len -= PAGE_CACHE_SIZE;
+ } else if (len > 0) {
/* enough for partial page, fill and zero the rest */
- rdata->iov[rdata->nr_iov].iov_base = kmap(page);
- rdata->iov[rdata->nr_iov].iov_len = remaining;
+ iov.iov_base = kmap(page);
+ iov.iov_len = len;
cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu",
- rdata->nr_iov, page->index,
- rdata->iov[rdata->nr_iov].iov_base,
- rdata->iov[rdata->nr_iov].iov_len);
- memset(rdata->iov[rdata->nr_iov].iov_base + remaining,
- '\0', PAGE_CACHE_SIZE - remaining);
- ++rdata->nr_iov;
- len += remaining;
- remaining = 0;
+ i, page->index, iov.iov_base, iov.iov_len);
+ memset(iov.iov_base + len,
+ '\0', PAGE_CACHE_SIZE - len);
+ rdata->tailsz = len;
+ len = 0;
} else if (page->index > eof_index) {
/*
* The VFS will not try to do readahead past the
* fill them until the writes are flushed.
*/
zero_user(page, 0, PAGE_CACHE_SIZE);
- list_del(&page->lru);
lru_cache_add_file(page);
flush_dcache_page(page);
SetPageUptodate(page);
unlock_page(page);
page_cache_release(page);
+ rdata->pages[i] = NULL;
+ rdata->nr_pages--;
+ continue;
} else {
/* no need to hold page hostage */
- list_del(&page->lru);
lru_cache_add_file(page);
unlock_page(page);
page_cache_release(page);
+ rdata->pages[i] = NULL;
+ rdata->nr_pages--;
+ continue;
}
+
+ result = cifs_readv_from_socket(server, &iov, 1, iov.iov_len);
+ kunmap(page);
+ if (result < 0)
+ break;
+
+ total_read += result;
}
- return len;
+ return total_read > 0 ? total_read : result;
}
static int cifs_readpages(struct file *file, struct address_space *mapping,
* the rdata->pages, then we want them in increasing order.
*/
while (!list_empty(page_list)) {
+ unsigned int i;
unsigned int bytes = PAGE_CACHE_SIZE;
unsigned int expected_index;
unsigned int nr_pages = 1;
rdata->offset = offset;
rdata->bytes = bytes;
rdata->pid = pid;
- rdata->marshal_iov = cifs_readpages_marshal_iov;
- list_splice_init(&tmplist, &rdata->pages);
+ rdata->pagesz = PAGE_CACHE_SIZE;
+ rdata->read_into_pages = cifs_readpages_read_into_pages;
+
+ list_for_each_entry_safe(page, tpage, &tmplist, lru) {
+ list_del(&page->lru);
+ rdata->pages[rdata->nr_pages++] = page;
+ }
rc = cifs_retry_async_readv(rdata);
if (rc != 0) {
- list_for_each_entry_safe(page, tpage, &rdata->pages,
- lru) {
- list_del(&page->lru);
+ for (i = 0; i < rdata->nr_pages; i++) {
+ page = rdata->pages[i];
lru_cache_add_file(page);
unlock_page(page);
page_cache_release(page);
oplock_break);
struct inode *inode = cfile->dentry->d_inode;
struct cifsInodeInfo *cinode = CIFS_I(inode);
+ struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
int rc = 0;
if (inode && S_ISREG(inode->i_mode)) {
* disconnected since oplock already released by the server
*/
if (!cfile->oplock_break_cancelled) {
- rc = CIFSSMBLock(0, tlink_tcon(cfile->tlink), cfile->netfid,
- current->tgid, 0, 0, 0, 0,
- LOCKING_ANDX_OPLOCK_RELEASE, false,
- cinode->clientCanCacheRead ? 1 : 0);
+ rc = tcon->ses->server->ops->oplock_response(tcon, &cfile->fid,
+ cinode);
cFYI(1, "Oplock release rc = %d", rc);
}
}
projects / linux-block.git / blobdiff