[linux-2.6] / 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

#ifdef __KERNEL__

#include <linux/types.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;
	pid_t 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;
};

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 /* __KERNEL__ */

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