/* * 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; 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; }; 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