ksmbd: move fs/cifsd to fs/ksmbd

Move fs/cifsd to fs/ksmbd and rename the remaining cifsd name to ksmbd.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/fs/ksmbd/vfs_cache.h b/fs/ksmbd/vfs_cache.h
new file mode 100644
index 000000000000..745855367106
--- /dev/null
+++ b/fs/ksmbd/vfs_cache.h
@@ -0,0 +1,187 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *   Copyright (C) 2019 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef __VFS_CACHE_H__
+#define __VFS_CACHE_H__
+
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/rwsem.h>
+#include <linux/spinlock.h>
+#include <linux/idr.h>
+#include <linux/workqueue.h>
+
+#include "vfs.h"
+
+/* Windows style file permissions for extended response */
+#define	FILE_GENERIC_ALL	0x1F01FF
+#define	FILE_GENERIC_READ	0x120089
+#define	FILE_GENERIC_WRITE	0x120116
+#define	FILE_GENERIC_EXECUTE	0X1200a0
+
+#define KSMBD_START_FID		0
+#define KSMBD_NO_FID		(UINT_MAX)
+#define SMB2_NO_FID		(0xFFFFFFFFFFFFFFFFULL)
+
+#define FP_FILENAME(fp)		((fp)->filp->f_path.dentry->d_name.name)
+#define FP_INODE(fp)		d_inode((fp)->filp->f_path.dentry)
+#define PARENT_INODE(fp)	d_inode((fp)->filp->f_path.dentry->d_parent)
+
+#define ATTR_FP(fp) ((fp)->attrib_only && \
+		     ((fp)->cdoption != FILE_OVERWRITE_IF_LE && \
+		      (fp)->cdoption != FILE_OVERWRITE_LE && \
+		      (fp)->cdoption != FILE_SUPERSEDE_LE))
+
+struct ksmbd_conn;
+struct ksmbd_session;
+
+struct ksmbd_lock {
+	struct file_lock *fl;
+	struct list_head glist;
+	struct list_head llist;
+	unsigned int flags;
+	int cmd;
+	int zero_len;
+	unsigned long long start;
+	unsigned long long end;
+};
+
+struct stream {
+	char *name;
+	ssize_t size;
+};
+
+struct ksmbd_inode {
+	rwlock_t			m_lock;
+	atomic_t			m_count;
+	atomic_t			op_count;
+	/* opinfo count for streams */
+	atomic_t			sop_count;
+	struct inode			*m_inode;
+	unsigned int			m_flags;
+	struct hlist_node		m_hash;
+	struct list_head		m_fp_list;
+	struct list_head		m_op_list;
+	struct oplock_info		*m_opinfo;
+	__le32				m_fattr;
+};
+
+struct ksmbd_file {
+	struct file			*filp;
+	char				*filename;
+	unsigned int			persistent_id;
+	unsigned int			volatile_id;
+
+	spinlock_t			f_lock;
+
+	struct ksmbd_inode		*f_ci;
+	struct ksmbd_inode		*f_parent_ci;
+	struct oplock_info __rcu	*f_opinfo;
+	struct ksmbd_conn		*conn;
+	struct ksmbd_tree_connect	*tcon;
+
+	atomic_t			refcount;
+	__le32				daccess;
+	__le32				saccess;
+	__le32				coption;
+	__le32				cdoption;
+	__u64				create_time;
+	__u64				itime;
+
+	bool				is_nt_open;
+	bool				attrib_only;
+
+	char				client_guid[16];
+	char				create_guid[16];
+	char				app_instance_id[16];
+
+	struct stream			stream;
+	struct list_head		node;
+	struct list_head		blocked_works;
+
+	int				durable_timeout;
+
+	/* for SMB1 */
+	int				pid;
+
+	/* conflict lock fail count for SMB1 */
+	unsigned int			cflock_cnt;
+	/* last lock failure start offset for SMB1 */
+	unsigned long long		llock_fstart;
+
+	int				dirent_offset;
+
+	/* if ls is happening on directory, below is valid*/
+	struct ksmbd_readdir_data	readdir_data;
+	int				dot_dotdot[2];
+};
+
+static inline void set_ctx_actor(struct dir_context *ctx,
+				 filldir_t actor)
+{
+	ctx->actor = actor;
+}
+
+#define KSMBD_NR_OPEN_DEFAULT BITS_PER_LONG
+
+struct ksmbd_file_table {
+	rwlock_t		lock;
+	struct idr		*idr;
+};
+
+static inline bool HAS_FILE_ID(unsigned long long req)
+{
+	unsigned int id = (unsigned int)req;
+
+	return id < KSMBD_NO_FID;
+}
+
+static inline bool ksmbd_stream_fd(struct ksmbd_file *fp)
+{
+	return fp->stream.name != NULL;
+}
+
+int ksmbd_init_file_table(struct ksmbd_file_table *ft);
+void ksmbd_destroy_file_table(struct ksmbd_file_table *ft);
+int ksmbd_close_fd(struct ksmbd_work *work, unsigned int id);
+struct ksmbd_file *ksmbd_lookup_fd_fast(struct ksmbd_work *work, unsigned int id);
+struct ksmbd_file *ksmbd_lookup_foreign_fd(struct ksmbd_work *work, unsigned int id);
+struct ksmbd_file *ksmbd_lookup_fd_slow(struct ksmbd_work *work, unsigned int id,
+					unsigned int pid);
+void ksmbd_fd_put(struct ksmbd_work *work, struct ksmbd_file *fp);
+struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id);
+struct ksmbd_file *ksmbd_lookup_fd_cguid(char *cguid);
+struct ksmbd_file *ksmbd_lookup_fd_inode(struct inode *inode);
+unsigned int ksmbd_open_durable_fd(struct ksmbd_file *fp);
+struct ksmbd_file *ksmbd_open_fd(struct ksmbd_work *work, struct file *filp);
+void ksmbd_close_tree_conn_fds(struct ksmbd_work *work);
+void ksmbd_close_session_fds(struct ksmbd_work *work);
+int ksmbd_close_inode_fds(struct ksmbd_work *work, struct inode *inode);
+int ksmbd_init_global_file_table(void);
+void ksmbd_free_global_file_table(void);
+int ksmbd_file_table_flush(struct ksmbd_work *work);
+void ksmbd_set_fd_limit(unsigned long limit);
+
+/*
+ * INODE hash
+ */
+int __init ksmbd_inode_hash_init(void);
+void ksmbd_release_inode_hash(void);
+
+enum KSMBD_INODE_STATUS {
+	KSMBD_INODE_STATUS_OK,
+	KSMBD_INODE_STATUS_UNKNOWN,
+	KSMBD_INODE_STATUS_PENDING_DELETE,
+};
+
+int ksmbd_query_inode_status(struct inode *inode);
+bool ksmbd_inode_pending_delete(struct ksmbd_file *fp);
+void ksmbd_set_inode_pending_delete(struct ksmbd_file *fp);
+void ksmbd_clear_inode_pending_delete(struct ksmbd_file *fp);
+void ksmbd_fd_set_delete_on_close(struct ksmbd_file *fp,
+				  int file_info);
+int ksmbd_init_file_cache(void);
+void ksmbd_exit_file_cache(void);
+#endif /* __VFS_CACHE_H__ */