/* * 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(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