| 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 | |