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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 | |
17 | #ifdef __KERNEL__ |
18 | |
19 | #include <linux/workqueue.h> |
20 | |
21 | #define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ |
22 | |
23 | struct sock; |
24 | |
25 | struct ncp_server { |
26 | |
27 | struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of |
28 | interest for us later, so we store |
29 | it completely. */ |
30 | |
31 | __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2]; |
32 | |
33 | struct file *ncp_filp; /* File pointer to ncp socket */ |
34 | struct socket *ncp_sock;/* ncp socket */ |
35 | struct file *info_filp; |
36 | struct socket *info_sock; |
37 | |
38 | u8 sequence; |
39 | u8 task; |
40 | u16 connection; /* Remote connection number */ |
41 | |
42 | u8 completion; /* Status message from server */ |
43 | u8 conn_status; /* Bit 4 = 1 ==> Server going down, no |
44 | requests allowed anymore. |
45 | Bit 0 = 1 ==> Server is down. */ |
46 | |
47 | int buffer_size; /* Negotiated bufsize */ |
48 | |
49 | int reply_size; /* Size of last reply */ |
50 | |
51 | int packet_size; |
52 | unsigned char *packet; /* Here we prepare requests and |
53 | receive replies */ |
54 | unsigned char *txbuf; /* Storage for current request */ |
55 | unsigned char *rxbuf; /* Storage for reply to current request */ |
56 | |
57 | int lock; /* To prevent mismatch in protocols. */ |
58 | struct mutex mutex; |
59 | |
60 | int current_size; /* for packet preparation */ |
61 | int has_subfunction; |
62 | int ncp_reply_size; |
63 | |
64 | int root_setuped; |
65 | |
66 | /* info for packet signing */ |
67 | int sign_wanted; /* 1=Server needs signed packets */ |
68 | int sign_active; /* 0=don't do signing, 1=do */ |
69 | char sign_root[8]; /* generated from password and encr. key */ |
70 | char sign_last[16]; |
71 | |
72 | /* Authentication info: NDS or BINDERY, username */ |
73 | struct { |
74 | int auth_type; |
75 | size_t object_name_len; |
76 | void* object_name; |
77 | int object_type; |
78 | } auth; |
79 | /* Password info */ |
80 | struct { |
81 | size_t len; |
82 | void* data; |
83 | } priv; |
84 | |
85 | /* nls info: codepage for volume and charset for I/O */ |
86 | struct nls_table *nls_vol; |
87 | struct nls_table *nls_io; |
88 | |
89 | /* maximum age in jiffies */ |
90 | int dentry_ttl; |
91 | |
92 | /* miscellaneous */ |
93 | unsigned int flags; |
94 | |
95 | spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */ |
96 | |
97 | void (*data_ready)(struct sock* sk, int len); |
98 | void (*error_report)(struct sock* sk); |
99 | void (*write_space)(struct sock* sk); /* STREAM mode only */ |
100 | struct { |
101 | struct work_struct tq; /* STREAM/DGRAM: data/error ready */ |
102 | struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ |
103 | struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ |
104 | |
105 | unsigned int state; /* STREAM only: receiver state */ |
106 | struct { |
107 | __u32 magic __attribute__((packed)); |
108 | __u32 len __attribute__((packed)); |
109 | __u16 type __attribute__((packed)); |
110 | __u16 p1 __attribute__((packed)); |
111 | __u16 p2 __attribute__((packed)); |
112 | __u16 p3 __attribute__((packed)); |
113 | __u16 type2 __attribute__((packed)); |
114 | } buf; /* STREAM only: temporary buffer */ |
115 | unsigned char* ptr; /* STREAM only: pointer to data */ |
116 | size_t len; /* STREAM only: length of data to receive */ |
117 | } rcv; |
118 | struct { |
119 | struct list_head requests; /* STREAM only: queued requests */ |
120 | struct work_struct tq; /* STREAM only: transmitter ready */ |
121 | struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */ |
122 | } tx; |
123 | struct timer_list timeout_tm; /* DGRAM only: timeout timer */ |
124 | struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */ |
125 | int timeout_last; /* DGRAM only: current timeout length */ |
126 | int timeout_retries; /* DGRAM only: retries left */ |
127 | struct { |
128 | size_t len; |
129 | __u8 data[128]; |
130 | } unexpected_packet; |
131 | struct backing_dev_info bdi; |
132 | }; |
133 | |
134 | extern void ncp_tcp_rcv_proc(struct work_struct *work); |
135 | extern void ncp_tcp_tx_proc(struct work_struct *work); |
136 | extern void ncpdgram_rcv_proc(struct work_struct *work); |
137 | extern void ncpdgram_timeout_proc(struct work_struct *work); |
138 | extern void ncpdgram_timeout_call(unsigned long server); |
139 | extern void ncp_tcp_data_ready(struct sock* sk, int len); |
140 | extern void ncp_tcp_write_space(struct sock* sk); |
141 | extern void ncp_tcp_error_report(struct sock* sk); |
142 | |
143 | #define NCP_FLAG_UTF8 1 |
144 | |
145 | #define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag)) |
146 | #define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag)) |
147 | #define NCP_IS_FLAG(server, flag) ((server)->flags & (flag)) |
148 | |
149 | static inline int ncp_conn_valid(struct ncp_server *server) |
150 | { |
151 | return ((server->conn_status & 0x11) == 0); |
152 | } |
153 | |
154 | static inline void ncp_invalidate_conn(struct ncp_server *server) |
155 | { |
156 | server->conn_status |= 0x01; |
157 | } |
158 | |
159 | #endif /* __KERNEL__ */ |
160 | |
161 | #endif |
162 | |
163 |
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