[linux-2.6-block.git] / include / linux / smb_fs_sb.h

/*
 *  smb_fs_sb.h
 *
 *  Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke
 *  Copyright (C) 1997 by Volker Lendecke
 *
 */

#ifndef _SMB_FS_SB
#define _SMB_FS_SB

#include <linux/types.h>
#include <linux/backing-dev.h>
#include <linux/smb.h>

/*
 * Upper limit on the total number of active smb_request structs.
 */
#define MAX_REQUEST_HARD       256

enum smb_receive_state {
	SMB_RECV_START,		/* No data read, looking for length + sig */
	SMB_RECV_HEADER,	/* Reading the header data */
	SMB_RECV_HCOMPLETE,	/* Done with the header */
	SMB_RECV_PARAM,		/* Reading parameter words */
	SMB_RECV_DATA,		/* Reading data bytes */
	SMB_RECV_END,		/* End of request */
	SMB_RECV_DROP,		/* Dropping this SMB */
	SMB_RECV_REQUEST,	/* Received a request and not a reply */
};

/* structure access macros */
#define server_from_inode(inode) SMB_SB((inode)->i_sb)
#define server_from_dentry(dentry) SMB_SB((dentry)->d_sb)
#define SB_of(server) ((server)->super_block)

struct smb_sb_info {
	/* List of all smbfs superblocks */
	struct list_head entry;

        enum smb_conn_state state;
	struct file * sock_file;
	int conn_error;
	enum smb_receive_state rstate;

	atomic_t nr_requests;
	struct list_head xmitq;
	struct list_head recvq;
	u16 mid;

        struct smb_mount_data_kernel *mnt;

	/* Connections are counted. Each time a new socket arrives,
	 * generation is incremented.
	 */
	unsigned int generation;
	struct pid *conn_pid;
	struct smb_conn_opt opt;
	wait_queue_head_t conn_wq;
	int conn_complete;
	struct semaphore sem;

	unsigned char      header[SMB_HEADER_LEN + 20*2 + 2];
	u32                header_len;
	u32                smb_len;
	u32                smb_read;

        /* We use our own data_ready callback, but need the original one */
        void *data_ready;

	/* nls pointers for codepage conversions */
	struct nls_table *remote_nls;
	struct nls_table *local_nls;

	struct smb_ops *ops;

	struct super_block *super_block;

	struct backing_dev_info bdi;
};

static inline int
smb_lock_server_interruptible(struct smb_sb_info *server)
{
	return down_interruptible(&(server->sem));
}

static inline void
smb_lock_server(struct smb_sb_info *server)
{
	down(&(server->sem));
}

static inline void
smb_unlock_server(struct smb_sb_info *server)
{
	up(&(server->sem));
}

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* smb_fs_sb.h
	3	*
	4	* Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke
	5	* Copyright (C) 1997 by Volker Lendecke
	6	*
	7	*/
	8
	9	#ifndef _SMB_FS_SB
	10	#define _SMB_FS_SB
	11
1da177e4	12	#include <linux/types.h>
424264b7	13	#include <linux/backing-dev.h>
1da177e4 LT	14	#include <linux/smb.h>
	15
	16	/*
	17	* Upper limit on the total number of active smb_request structs.
	18	*/
	19	#define MAX_REQUEST_HARD 256
	20
	21	enum smb_receive_state {
	22	SMB_RECV_START, /* No data read, looking for length + sig */
	23	SMB_RECV_HEADER, /* Reading the header data */
	24	SMB_RECV_HCOMPLETE, /* Done with the header */
	25	SMB_RECV_PARAM, /* Reading parameter words */
	26	SMB_RECV_DATA, /* Reading data bytes */
	27	SMB_RECV_END, /* End of request */
	28	SMB_RECV_DROP, /* Dropping this SMB */
	29	SMB_RECV_REQUEST, /* Received a request and not a reply */
	30	};
	31
	32	/* structure access macros */
	33	#define server_from_inode(inode) SMB_SB((inode)->i_sb)
	34	#define server_from_dentry(dentry) SMB_SB((dentry)->d_sb)
	35	#define SB_of(server) ((server)->super_block)
	36
	37	struct smb_sb_info {
	38	/* List of all smbfs superblocks */
	39	struct list_head entry;
	40
	41	enum smb_conn_state state;
	42	struct file * sock_file;
	43	int conn_error;
	44	enum smb_receive_state rstate;
	45
	46	atomic_t nr_requests;
	47	struct list_head xmitq;
	48	struct list_head recvq;
	49	u16 mid;
	50
	51	struct smb_mount_data_kernel *mnt;
	52
	53	/* Connections are counted. Each time a new socket arrives,
	54	* generation is incremented.
	55	*/
	56	unsigned int generation;
a71113da	57	struct pid *conn_pid;
1da177e4 LT	58	struct smb_conn_opt opt;
	59	wait_queue_head_t conn_wq;
	60	int conn_complete;
	61	struct semaphore sem;
	62
	63	unsigned char header[SMB_HEADER_LEN + 20*2 + 2];
	64	u32 header_len;
	65	u32 smb_len;
	66	u32 smb_read;
	67
	68	/* We use our own data_ready callback, but need the original one */
	69	void *data_ready;
	70
	71	/* nls pointers for codepage conversions */
	72	struct nls_table *remote_nls;
	73	struct nls_table *local_nls;
	74
	75	struct smb_ops *ops;
	76
	77	struct super_block *super_block;
424264b7 JA	78
424264b7 JA	79	struct backing_dev_info bdi;
1da177e4 LT	80	};
	81
	82	static inline int
	83	smb_lock_server_interruptible(struct smb_sb_info *server)
	84	{
	85	return down_interruptible(&(server->sem));
	86	}
	87
	88	static inline void
	89	smb_lock_server(struct smb_sb_info *server)
	90	{
	91	down(&(server->sem));
	92	}
	93
	94	static inline void
	95	smb_unlock_server(struct smb_sb_info *server)
	96	{
	97	up(&(server->sem));
	98	}
	99
1da177e4	100	#endif