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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 | #include <linux/workqueue.h> |
17 | |
18 | #define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ |
19 | |
20 | struct sock; |
21 | |
22 | struct 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 | __kernel_uid32_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 | __kernel_uid32_t uid; |
34 | __kernel_gid32_t gid; |
35 | __kernel_mode_t file_mode; |
36 | __kernel_mode_t dir_mode; |
37 | int info_fd; |
38 | }; |
39 | |
40 | struct ncp_server { |
41 | |
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 file *ncp_filp; /* File pointer to ncp socket */ |
49 | struct socket *ncp_sock;/* ncp socket */ |
50 | struct file *info_filp; |
51 | struct socket *info_sock; |
52 | |
53 | u8 sequence; |
54 | u8 task; |
55 | u16 connection; /* Remote connection number */ |
56 | |
57 | u8 completion; /* Status message from server */ |
58 | u8 conn_status; /* Bit 4 = 1 ==> Server going down, no |
59 | requests allowed anymore. |
60 | Bit 0 = 1 ==> Server is down. */ |
61 | |
62 | int buffer_size; /* Negotiated bufsize */ |
63 | |
64 | int reply_size; /* Size of last reply */ |
65 | |
66 | int packet_size; |
67 | unsigned char *packet; /* Here we prepare requests and |
68 | receive replies */ |
69 | unsigned char *txbuf; /* Storage for current request */ |
70 | unsigned char *rxbuf; /* Storage for reply to current request */ |
71 | |
72 | int lock; /* To prevent mismatch in protocols. */ |
73 | struct mutex mutex; |
74 | |
75 | int current_size; /* for packet preparation */ |
76 | int has_subfunction; |
77 | int ncp_reply_size; |
78 | |
79 | int root_setuped; |
80 | struct mutex root_setup_lock; |
81 | |
82 | /* info for packet signing */ |
83 | int sign_wanted; /* 1=Server needs signed packets */ |
84 | int sign_active; /* 0=don't do signing, 1=do */ |
85 | char sign_root[8]; /* generated from password and encr. key */ |
86 | char sign_last[16]; |
87 | |
88 | /* Authentication info: NDS or BINDERY, username */ |
89 | struct { |
90 | int auth_type; |
91 | size_t object_name_len; |
92 | void* object_name; |
93 | int object_type; |
94 | } auth; |
95 | /* Password info */ |
96 | struct { |
97 | size_t len; |
98 | void* data; |
99 | } priv; |
100 | struct rw_semaphore auth_rwsem; |
101 | |
102 | /* nls info: codepage for volume and charset for I/O */ |
103 | struct nls_table *nls_vol; |
104 | struct nls_table *nls_io; |
105 | |
106 | /* maximum age in jiffies */ |
107 | atomic_t dentry_ttl; |
108 | |
109 | /* miscellaneous */ |
110 | unsigned int flags; |
111 | |
112 | spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */ |
113 | |
114 | void (*data_ready)(struct sock* sk, int len); |
115 | void (*error_report)(struct sock* sk); |
116 | void (*write_space)(struct sock* sk); /* STREAM mode only */ |
117 | struct { |
118 | struct work_struct tq; /* STREAM/DGRAM: data/error ready */ |
119 | struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ |
120 | struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ |
121 | |
122 | unsigned int state; /* STREAM only: receiver state */ |
123 | struct { |
124 | __u32 magic __packed; |
125 | __u32 len __packed; |
126 | __u16 type __packed; |
127 | __u16 p1 __packed; |
128 | __u16 p2 __packed; |
129 | __u16 p3 __packed; |
130 | __u16 type2 __packed; |
131 | } buf; /* STREAM only: temporary buffer */ |
132 | unsigned char* ptr; /* STREAM only: pointer to data */ |
133 | size_t len; /* STREAM only: length of data to receive */ |
134 | } rcv; |
135 | struct { |
136 | struct list_head requests; /* STREAM only: queued requests */ |
137 | struct work_struct tq; /* STREAM only: transmitter ready */ |
138 | struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */ |
139 | } tx; |
140 | struct timer_list timeout_tm; /* DGRAM only: timeout timer */ |
141 | struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */ |
142 | int timeout_last; /* DGRAM only: current timeout length */ |
143 | int timeout_retries; /* DGRAM only: retries left */ |
144 | struct { |
145 | size_t len; |
146 | __u8 data[128]; |
147 | } unexpected_packet; |
148 | struct backing_dev_info bdi; |
149 | }; |
150 | |
151 | extern void ncp_tcp_rcv_proc(struct work_struct *work); |
152 | extern void ncp_tcp_tx_proc(struct work_struct *work); |
153 | extern void ncpdgram_rcv_proc(struct work_struct *work); |
154 | extern void ncpdgram_timeout_proc(struct work_struct *work); |
155 | extern void ncpdgram_timeout_call(unsigned long server); |
156 | extern void ncp_tcp_data_ready(struct sock* sk, int len); |
157 | extern void ncp_tcp_write_space(struct sock* sk); |
158 | extern void ncp_tcp_error_report(struct sock* sk); |
159 | |
160 | #define NCP_FLAG_UTF8 1 |
161 | |
162 | #define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag)) |
163 | #define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag)) |
164 | #define NCP_IS_FLAG(server, flag) ((server)->flags & (flag)) |
165 | |
166 | static inline int ncp_conn_valid(struct ncp_server *server) |
167 | { |
168 | return ((server->conn_status & 0x11) == 0); |
169 | } |
170 | |
171 | static inline void ncp_invalidate_conn(struct ncp_server *server) |
172 | { |
173 | server->conn_status |= 0x01; |
174 | } |
175 | |
176 | #endif |
177 |
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