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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ncp_fs_sb.h
*
* Copyright (C) 1995, 1996 by Volker Lendecke
*
*/
#ifndef _NCP_FS_SB
#define _NCP_FS_SB
#include <linux/types.h>
#include <linux/ncp_mount.h>
#include <linux/net.h>
#include <linux/mutex.h>
#include <linux/backing-dev.h>
#include <linux/workqueue.h>
#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */
struct sock;
struct ncp_mount_data_kernel {
unsigned long flags; /* NCP_MOUNT_* flags */
unsigned int int_flags; /* internal flags */
#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001
kuid_t mounted_uid; /* Who may umount() this filesystem? */
struct pid *wdog_pid; /* Who cares for our watchdog packets? */
unsigned int ncp_fd; /* The socket to the ncp port */
unsigned int time_out; /* How long should I wait after
sending a NCP request? */
unsigned int retry_count; /* And how often should I retry? */
unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
kuid_t uid;
kgid_t gid;
umode_t file_mode;
umode_t dir_mode;
int info_fd;
};
struct ncp_server {
struct rcu_head rcu;
struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
interest for us later, so we store
it completely. */
__u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
struct socket *ncp_sock;/* ncp socket */
struct socket *info_sock;
u8 sequence;
u8 task;
u16 connection; /* Remote connection number */
u8 completion; /* Status message from server */
u8 conn_status; /* Bit 4 = 1 ==> Server going down, no
requests allowed anymore.
Bit 0 = 1 ==> Server is down. */
int buffer_size; /* Negotiated bufsize */
int reply_size; /* Size of last reply */
int packet_size;
unsigned char *packet; /* Here we prepare requests and
receive replies */
unsigned char *txbuf; /* Storage for current request */
unsigned char *rxbuf; /* Storage for reply to current request */
int lock; /* To prevent mismatch in protocols. */
struct mutex mutex;
int current_size; /* for packet preparation */
int has_subfunction;
int ncp_reply_size;
int root_setuped;
struct mutex root_setup_lock;
/* info for packet signing */
int sign_wanted; /* 1=Server needs signed packets */
int sign_active; /* 0=don't do signing, 1=do */
char sign_root[8]; /* generated from password and encr. key */
char sign_last[16];
/* Authentication info: NDS or BINDERY, username */
struct {
int auth_type;
size_t object_name_len;
void* object_name;
int object_type;
} auth;
/* Password info */
struct {
size_t len;
void* data;
} priv;
struct rw_semaphore auth_rwsem;
/* nls info: codepage for volume and charset for I/O */
struct nls_table *nls_vol;
struct nls_table *nls_io;
/* maximum age in jiffies */
atomic_t dentry_ttl;
/* miscellaneous */
unsigned int flags;
spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
void (*data_ready)(struct sock* sk);
void (*error_report)(struct sock* sk);
void (*write_space)(struct sock* sk); /* STREAM mode only */
struct {
struct work_struct tq; /* STREAM/DGRAM: data/error ready */
struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */
struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */
unsigned int state; /* STREAM only: receiver state */
struct {
__u32 magic __packed;
__u32 len __packed;
__u16 type __packed;
__u16 p1 __packed;
__u16 p2 __packed;
__u16 p3 __packed;
__u16 type2 __packed;
} buf; /* STREAM only: temporary buffer */
unsigned char* ptr; /* STREAM only: pointer to data */
size_t len; /* STREAM only: length of data to receive */
} rcv;
struct {
struct list_head requests; /* STREAM only: queued requests */
struct work_struct tq; /* STREAM only: transmitter ready */
struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */
} tx;
struct timer_list timeout_tm; /* DGRAM only: timeout timer */
struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */
int timeout_last; /* DGRAM only: current timeout length */
int timeout_retries; /* DGRAM only: retries left */
struct {
size_t len;
__u8 data[128];
} unexpected_packet;
};
extern void ncp_tcp_rcv_proc(struct work_struct *work);
extern void ncp_tcp_tx_proc(struct work_struct *work);
extern void ncpdgram_rcv_proc(struct work_struct *work);
extern void ncpdgram_timeout_proc(struct work_struct *work);
extern void ncpdgram_timeout_call(struct timer_list *t);
extern void ncp_tcp_data_ready(struct sock* sk);
extern void ncp_tcp_write_space(struct sock* sk);
extern void ncp_tcp_error_report(struct sock* sk);
#define NCP_FLAG_UTF8 1
#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag))
#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag))
#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag))
static inline int ncp_conn_valid(struct ncp_server *server)
{
return ((server->conn_status & 0x11) == 0);
}
static inline void ncp_invalidate_conn(struct ncp_server *server)
{
server->conn_status |= 0x01;
}
#endif
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