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ade62d8b42
When running generic/591 after smb2 leases is enable, all smb2 lease ack requests failed in ksmbd. because cifs client seems to support only smb2 v2 lease. So cifs doesn't update lease state in ack request if epoch is not set in smb2 lease break request from ksmbd. epoch is used for smb2 v2 leases. So this patch add smb2 create v2 lease context and set increased epoch in smb2 lease break response. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
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* Copyright (C) 2018 Samsung Electronics Co., Ltd.
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*/
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#ifndef __KSMBD_OPLOCK_H
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#define __KSMBD_OPLOCK_H
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#include "smb_common.h"
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#define OPLOCK_WAIT_TIME (35 * HZ)
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/* SMB Oplock levels */
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#define OPLOCK_NONE 0
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#define OPLOCK_EXCLUSIVE 1
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#define OPLOCK_BATCH 2
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#define OPLOCK_READ 3 /* level 2 oplock */
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/* SMB2 Oplock levels */
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#define SMB2_OPLOCK_LEVEL_NONE 0x00
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#define SMB2_OPLOCK_LEVEL_II 0x01
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#define SMB2_OPLOCK_LEVEL_EXCLUSIVE 0x08
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#define SMB2_OPLOCK_LEVEL_BATCH 0x09
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#define SMB2_OPLOCK_LEVEL_LEASE 0xFF
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/* Oplock states */
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#define OPLOCK_STATE_NONE 0x00
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#define OPLOCK_ACK_WAIT 0x01
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#define OPLOCK_CLOSING 0x02
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#define OPLOCK_WRITE_TO_READ 0x01
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#define OPLOCK_READ_HANDLE_TO_READ 0x02
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#define OPLOCK_WRITE_TO_NONE 0x04
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#define OPLOCK_READ_TO_NONE 0x08
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#define SMB2_LEASE_KEY_SIZE 16
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struct lease_ctx_info {
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__u8 lease_key[SMB2_LEASE_KEY_SIZE];
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__le32 req_state;
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__le32 flags;
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__le64 duration;
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__u8 parent_lease_key[SMB2_LEASE_KEY_SIZE];
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int version;
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};
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struct lease_table {
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char client_guid[SMB2_CLIENT_GUID_SIZE];
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struct list_head lease_list;
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struct list_head l_entry;
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spinlock_t lb_lock;
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};
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struct lease {
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__u8 lease_key[SMB2_LEASE_KEY_SIZE];
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__le32 state;
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__le32 new_state;
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__le32 flags;
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__le64 duration;
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__u8 parent_lease_key[SMB2_LEASE_KEY_SIZE];
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int version;
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unsigned short epoch;
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struct lease_table *l_lb;
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};
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struct oplock_info {
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struct ksmbd_conn *conn;
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struct ksmbd_session *sess;
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struct ksmbd_work *work;
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struct ksmbd_file *o_fp;
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int level;
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int op_state;
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unsigned long pending_break;
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u64 fid;
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atomic_t breaking_cnt;
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atomic_t refcount;
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__u16 Tid;
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bool is_lease;
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bool open_trunc; /* truncate on open */
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struct lease *o_lease;
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struct list_head interim_list;
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struct list_head op_entry;
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struct list_head lease_entry;
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wait_queue_head_t oplock_q; /* Other server threads */
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wait_queue_head_t oplock_brk; /* oplock breaking wait */
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struct rcu_head rcu_head;
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};
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struct lease_break_info {
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__le32 curr_state;
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__le32 new_state;
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__le16 epoch;
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char lease_key[SMB2_LEASE_KEY_SIZE];
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};
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struct oplock_break_info {
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int level;
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int open_trunc;
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int fid;
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};
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int smb_grant_oplock(struct ksmbd_work *work, int req_op_level,
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u64 pid, struct ksmbd_file *fp, __u16 tid,
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struct lease_ctx_info *lctx, int share_ret);
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void smb_break_all_levII_oplock(struct ksmbd_work *work,
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struct ksmbd_file *fp, int is_trunc);
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int opinfo_write_to_read(struct oplock_info *opinfo);
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int opinfo_read_handle_to_read(struct oplock_info *opinfo);
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int opinfo_write_to_none(struct oplock_info *opinfo);
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int opinfo_read_to_none(struct oplock_info *opinfo);
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void close_id_del_oplock(struct ksmbd_file *fp);
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void smb_break_all_oplock(struct ksmbd_work *work, struct ksmbd_file *fp);
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struct oplock_info *opinfo_get(struct ksmbd_file *fp);
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void opinfo_put(struct oplock_info *opinfo);
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/* Lease related functions */
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void create_lease_buf(u8 *rbuf, struct lease *lease);
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struct lease_ctx_info *parse_lease_state(void *open_req);
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__u8 smb2_map_lease_to_oplock(__le32 lease_state);
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int lease_read_to_write(struct oplock_info *opinfo);
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/* Durable related functions */
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void create_durable_rsp_buf(char *cc);
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void create_durable_v2_rsp_buf(char *cc, struct ksmbd_file *fp);
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void create_mxac_rsp_buf(char *cc, int maximal_access);
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void create_disk_id_rsp_buf(char *cc, __u64 file_id, __u64 vol_id);
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void create_posix_rsp_buf(char *cc, struct ksmbd_file *fp);
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struct create_context *smb2_find_context_vals(void *open_req, const char *str);
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struct oplock_info *lookup_lease_in_table(struct ksmbd_conn *conn,
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char *lease_key);
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int find_same_lease_key(struct ksmbd_session *sess, struct ksmbd_inode *ci,
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struct lease_ctx_info *lctx);
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void destroy_lease_table(struct ksmbd_conn *conn);
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int smb2_check_durable_oplock(struct ksmbd_file *fp,
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struct lease_ctx_info *lctx, char *name);
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#endif /* __KSMBD_OPLOCK_H */
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