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> 14#include <linux/mutex.h> 15#include <linux/backing-dev.h> 16#include <linux/workqueue.h> 17 18#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ 19 20struct sock; 21 22struct 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 26 kuid_t mounted_uid; /* Who may umount() this filesystem? */ 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]; 33 kuid_t uid; 34 kgid_t gid; 35 umode_t file_mode; 36 umode_t dir_mode; 37 int info_fd; 38}; 39 40struct ncp_server { 41 struct rcu_head rcu; 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 48 struct socket *ncp_sock;/* ncp socket */ 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 */ 67 unsigned char *txbuf; /* Storage for current request */ 68 unsigned char *rxbuf; /* Storage for reply to current request */ 69 70 int lock; /* To prevent mismatch in protocols. */ 71 struct mutex mutex; 72 73 int current_size; /* for packet preparation */ 74 int has_subfunction; 75 int ncp_reply_size; 76 77 int root_setuped; 78 struct mutex root_setup_lock; 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; 98 struct rw_semaphore auth_rwsem; 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 */ 105 atomic_t dentry_ttl; 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 */ 111 112 void (*data_ready)(struct sock* sk); 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 */ 118 struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ 119 120 unsigned int state; /* STREAM only: receiver state */ 121 struct { 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; 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; 146 struct backing_dev_info bdi; 147}; 148 149extern void ncp_tcp_rcv_proc(struct work_struct *work); 150extern void ncp_tcp_tx_proc(struct work_struct *work); 151extern void ncpdgram_rcv_proc(struct work_struct *work); 152extern void ncpdgram_timeout_proc(struct work_struct *work); 153extern void ncpdgram_timeout_call(unsigned long server); 154extern void ncp_tcp_data_ready(struct sock* sk); 155extern void ncp_tcp_write_space(struct sock* sk); 156extern 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 164static inline int ncp_conn_valid(struct ncp_server *server) 165{ 166 return ((server->conn_status & 0x11) == 0); 167} 168 169static inline void ncp_invalidate_conn(struct ncp_server *server) 170{ 171 server->conn_status |= 0x01; 172} 173 174#endif 175