include/linux/ncp_fs_sb.h

   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
  15 #ifdef __KERNEL__
  16
  17 #include <linux/workqueue.h>
  18
  19 #define NCP_DEFAULT_OPTIONS 0           /* 2 for packet signatures */
  20
  21 struct sock;
  22
  23 struct ncp_server {
  24
  25         struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
  26                                            interest for us later, so we store
  27                                            it completely. */
  28
  29         __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
  30
  31         struct file *ncp_filp;  /* File pointer to ncp socket */
  32         struct socket *ncp_sock;/* ncp socket */
  33         struct file *info_filp;
  34         struct socket *info_sock;
  35
  36         u8 sequence;
  37         u8 task;
  38         u16 connection;         /* Remote connection number */
  39
  40         u8 completion;          /* Status message from server */
  41         u8 conn_status;         /* Bit 4 = 1 ==> Server going down, no
  42                                    requests allowed anymore.
  43                                    Bit 0 = 1 ==> Server is down. */
  44
  45         int buffer_size;        /* Negotiated bufsize */
  46
  47         int reply_size;         /* Size of last reply */
  48
  49         int packet_size;
  50         unsigned char *packet;  /* Here we prepare requests and
  51                                    receive replies */
  52
  53         int lock;               /* To prevent mismatch in protocols. */
  54         struct semaphore sem;
  55
  56         int current_size;       /* for packet preparation */
  57         int has_subfunction;
  58         int ncp_reply_size;
  59
  60         int root_setuped;
  61
  62         /* info for packet signing */
  63         int sign_wanted;        /* 1=Server needs signed packets */
  64         int sign_active;        /* 0=don't do signing, 1=do */
  65         char sign_root[8];      /* generated from password and encr. key */
  66         char sign_last[16];
  67
  68         /* Authentication info: NDS or BINDERY, username */
  69         struct {
  70                 int     auth_type;
  71                 size_t  object_name_len;
  72                 void*   object_name;
  73                 int     object_type;
  74         } auth;
  75         /* Password info */
  76         struct {
  77                 size_t  len;
  78                 void*   data;
  79         } priv;
  80
  81         /* nls info: codepage for volume and charset for I/O */
  82         struct nls_table *nls_vol;
  83         struct nls_table *nls_io;
  84
  85         /* maximum age in jiffies */
  86         int dentry_ttl;
  87
  88         /* miscellaneous */
  89         unsigned int flags;
  90
  91         spinlock_t requests_lock;       /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
  92
  93         void (*data_ready)(struct sock* sk, int len);
  94         void (*error_report)(struct sock* sk);
  95         void (*write_space)(struct sock* sk);   /* STREAM mode only */
  96         struct {
  97                 struct work_struct tq;          /* STREAM/DGRAM: data/error ready */
  98                 struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */
  99                 struct semaphore creq_sem;      /* DGRAM only: lock accesses to rcv.creq */
 100
 101                 unsigned int state;             /* STREAM only: receiver state */
 102                 struct {
 103                         __u32 magic __attribute__((packed));
 104                         __u32 len __attribute__((packed));
 105                         __u16 type __attribute__((packed));
 106                         __u16 p1 __attribute__((packed));
 107                         __u16 p2 __attribute__((packed));
 108                         __u16 p3 __attribute__((packed));
 109                         __u16 type2 __attribute__((packed));
 110                 } buf;                          /* STREAM only: temporary buffer */
 111                 unsigned char* ptr;             /* STREAM only: pointer to data */
 112                 size_t len;                     /* STREAM only: length of data to receive */
 113         } rcv;
 114         struct {
 115                 struct list_head requests;      /* STREAM only: queued requests */
 116                 struct work_struct tq;          /* STREAM only: transmitter ready */
 117                 struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */
 118         } tx;
 119         struct timer_list timeout_tm;           /* DGRAM only: timeout timer */
 120         struct work_struct timeout_tq;          /* DGRAM only: associated queue, we run timers from process context */
 121         int timeout_last;                       /* DGRAM only: current timeout length */
 122         int timeout_retries;                    /* DGRAM only: retries left */
 123         struct {
 124                 size_t len;
 125                 __u8 data[128];
 126         } unexpected_packet;
 127 };
 128
 129 extern void ncp_tcp_rcv_proc(void *server);
 130 extern void ncp_tcp_tx_proc(void *server);
 131 extern void ncpdgram_rcv_proc(void *server);
 132 extern void ncpdgram_timeout_proc(void *server);
 133 extern void ncpdgram_timeout_call(unsigned long server);
 134 extern void ncp_tcp_data_ready(struct sock* sk, int len);
 135 extern void ncp_tcp_write_space(struct sock* sk);
 136 extern void ncp_tcp_error_report(struct sock* sk);
 137
 138 #define NCP_FLAG_UTF8   1
 139
 140 #define NCP_CLR_FLAG(server, flag)      ((server)->flags &= ~(flag))
 141 #define NCP_SET_FLAG(server, flag)      ((server)->flags |= (flag))
 142 #define NCP_IS_FLAG(server, flag)       ((server)->flags & (flag))
 143
 144 static inline int ncp_conn_valid(struct ncp_server *server)
 145 {
 146         return ((server->conn_status & 0x11) == 0);
 147 }
 148
 149 static inline void ncp_invalidate_conn(struct ncp_server *server)
 150 {
 151         server->conn_status |= 0x01;
 152 }
 153
 154 #endif                          /* __KERNEL__ */
 155
 156 #endif
 157