[linux-2.6-block.git] / fs / ncpfs / ncp_fs_sb.h

/*
 *  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;
	struct backing_dev_info bdi;
};

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(unsigned long server);
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
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ncp_fs_sb.h
	3	*
	4	* Copyright (C) 1995, 1996 by Volker Lendecke
	5	*
	6	*/
	7
	8	#ifndef _NCP_FS_SB
	9	#define _NCP_FS_SB
	10
	11	#include <linux/types.h>
	12	#include <linux/ncp_mount.h>
	13	#include <linux/net.h>
8e3f9045	14	#include <linux/mutex.h>
f1970c73	15	#include <linux/backing-dev.h>
1da177e4 LT	16	#include <linux/workqueue.h>
	17
	18	#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */
	19
	20	struct sock;
	21
32c419d9 AV	22	struct ncp_mount_data_kernel {
	23	unsigned long flags; /* NCP_MOUNT_* flags */
	24	unsigned int int_flags; /* internal flags */
	25	#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001
1ac7fd81	26	kuid_t mounted_uid; /* Who may umount() this filesystem? */
32c419d9 AV	27	struct pid wdog_pid; / Who cares for our watchdog packets? */
	28	unsigned int ncp_fd; /* The socket to the ncp port */
	29	unsigned int time_out; /* How long should I wait after
	30	sending a NCP request? */
	31	unsigned int retry_count; /* And how often should I retry? */
	32	unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
1ac7fd81 EB	33	kuid_t uid;
1ac7fd81 EB	34	kgid_t gid;
16767652 AV	35	umode_t file_mode;
16767652 AV	36	umode_t dir_mode;
32c419d9 AV	37	int info_fd;
	38	};
	39
1da177e4	40	struct ncp_server {
1dcddd4a	41	struct rcu_head rcu;
1da177e4 LT	42	struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
	43	interest for us later, so we store
	44	it completely. */
	45
	46	__u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
	47
1da177e4	48	struct socket ncp_sock;/ ncp socket */
1da177e4 LT	49	struct socket *info_sock;
	50
	51	u8 sequence;
	52	u8 task;
	53	u16 connection; /* Remote connection number */
	54
	55	u8 completion; /* Status message from server */
	56	u8 conn_status; /* Bit 4 = 1 ==> Server going down, no
	57	requests allowed anymore.
	58	Bit 0 = 1 ==> Server is down. */
	59
	60	int buffer_size; /* Negotiated bufsize */
	61
	62	int reply_size; /* Size of last reply */
	63
	64	int packet_size;
	65	unsigned char packet; / Here we prepare requests and
	66	receive replies */
c5f93cf1 PO	67	unsigned char txbuf; / Storage for current request */
c5f93cf1 PO	68	unsigned char rxbuf; / Storage for reply to current request */
1da177e4 LT	69
1da177e4 LT	70	int lock; /* To prevent mismatch in protocols. */
8e3f9045	71	struct mutex mutex;
1da177e4 LT	72
	73	int current_size; /* for packet preparation */
	74	int has_subfunction;
	75	int ncp_reply_size;
	76
	77	int root_setuped;
2e54eb96	78	struct mutex root_setup_lock;
1da177e4 LT	79
	80	/* info for packet signing */
	81	int sign_wanted; /* 1=Server needs signed packets */
	82	int sign_active; /* 0=don't do signing, 1=do */
	83	char sign_root[8]; /* generated from password and encr. key */
	84	char sign_last[16];
	85
	86	/* Authentication info: NDS or BINDERY, username */
	87	struct {
	88	int auth_type;
	89	size_t object_name_len;
	90	void* object_name;
	91	int object_type;
	92	} auth;
	93	/* Password info */
	94	struct {
	95	size_t len;
	96	void* data;
	97	} priv;
2e54eb96	98	struct rw_semaphore auth_rwsem;
1da177e4 LT	99
	100	/* nls info: codepage for volume and charset for I/O */
	101	struct nls_table *nls_vol;
	102	struct nls_table *nls_io;
	103
	104	/* maximum age in jiffies */
2e54eb96	105	atomic_t dentry_ttl;
1da177e4 LT	106
	107	/* miscellaneous */
	108	unsigned int flags;
	109
	110	spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
	111
676d2369	112	void (data_ready)(struct sock sk);
1da177e4 LT	113	void (error_report)(struct sock sk);
	114	void (write_space)(struct sock sk); /* STREAM mode only */
	115	struct {
	116	struct work_struct tq; /* STREAM/DGRAM: data/error ready */
	117	struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */
8e3f9045	118	struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */
1da177e4 LT	119
	120	unsigned int state; /* STREAM only: receiver state */
	121	struct {
bc10502d ED	122	__u32 magic __packed;
	123	__u32 len __packed;
	124	__u16 type __packed;
	125	__u16 p1 __packed;
	126	__u16 p2 __packed;
	127	__u16 p3 __packed;
	128	__u16 type2 __packed;
1da177e4 LT	129	} buf; /* STREAM only: temporary buffer */
	130	unsigned char* ptr; /* STREAM only: pointer to data */
	131	size_t len; /* STREAM only: length of data to receive */
	132	} rcv;
	133	struct {
	134	struct list_head requests; /* STREAM only: queued requests */
	135	struct work_struct tq; /* STREAM only: transmitter ready */
	136	struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */
	137	} tx;
	138	struct timer_list timeout_tm; /* DGRAM only: timeout timer */
	139	struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */
	140	int timeout_last; /* DGRAM only: current timeout length */
	141	int timeout_retries; /* DGRAM only: retries left */
	142	struct {
	143	size_t len;
	144	__u8 data[128];
	145	} unexpected_packet;
f1970c73	146	struct backing_dev_info bdi;
1da177e4 LT	147	};
1da177e4 LT	148
c4028958 DH	149	extern void ncp_tcp_rcv_proc(struct work_struct *work);
	150	extern void ncp_tcp_tx_proc(struct work_struct *work);
	151	extern void ncpdgram_rcv_proc(struct work_struct *work);
	152	extern void ncpdgram_timeout_proc(struct work_struct *work);
1da177e4	153	extern void ncpdgram_timeout_call(unsigned long server);
676d2369	154	extern void ncp_tcp_data_ready(struct sock* sk);
1da177e4 LT	155	extern void ncp_tcp_write_space(struct sock* sk);
	156	extern void ncp_tcp_error_report(struct sock* sk);
	157
	158	#define NCP_FLAG_UTF8 1
	159
	160	#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag))
	161	#define NCP_SET_FLAG(server, flag) ((server)->flags \|= (flag))
	162	#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag))
	163
	164	static inline int ncp_conn_valid(struct ncp_server *server)
	165	{
	166	return ((server->conn_status & 0x11) == 0);
	167	}
	168
	169	static inline void ncp_invalidate_conn(struct ncp_server *server)
	170	{
	171	server->conn_status \|= 0x01;
	172	}
	173
1da177e4	174	#endif