Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * ncp_fs_sb.h | |
4 | * | |
5 | * Copyright (C) 1995, 1996 by Volker Lendecke | |
6 | * | |
7 | */ | |
8 | ||
9 | #ifndef _NCP_FS_SB | |
10 | #define _NCP_FS_SB | |
11 | ||
12 | #include <linux/types.h> | |
13 | #include <linux/ncp_mount.h> | |
14 | #include <linux/net.h> | |
8e3f9045 | 15 | #include <linux/mutex.h> |
f1970c73 | 16 | #include <linux/backing-dev.h> |
1da177e4 LT |
17 | #include <linux/workqueue.h> |
18 | ||
19 | #define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ | |
20 | ||
21 | struct sock; | |
22 | ||
32c419d9 AV |
23 | struct ncp_mount_data_kernel { |
24 | unsigned long flags; /* NCP_MOUNT_* flags */ | |
25 | unsigned int int_flags; /* internal flags */ | |
26 | #define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001 | |
1ac7fd81 | 27 | kuid_t mounted_uid; /* Who may umount() this filesystem? */ |
32c419d9 AV |
28 | struct pid *wdog_pid; /* Who cares for our watchdog packets? */ |
29 | unsigned int ncp_fd; /* The socket to the ncp port */ | |
30 | unsigned int time_out; /* How long should I wait after | |
31 | sending a NCP request? */ | |
32 | unsigned int retry_count; /* And how often should I retry? */ | |
33 | unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; | |
1ac7fd81 EB |
34 | kuid_t uid; |
35 | kgid_t gid; | |
16767652 AV |
36 | umode_t file_mode; |
37 | umode_t dir_mode; | |
32c419d9 AV |
38 | int info_fd; |
39 | }; | |
40 | ||
1da177e4 | 41 | struct ncp_server { |
1dcddd4a | 42 | struct rcu_head rcu; |
1da177e4 LT |
43 | struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of |
44 | interest for us later, so we store | |
45 | it completely. */ | |
46 | ||
47 | __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2]; | |
48 | ||
1da177e4 | 49 | struct socket *ncp_sock;/* ncp socket */ |
1da177e4 LT |
50 | struct socket *info_sock; |
51 | ||
52 | u8 sequence; | |
53 | u8 task; | |
54 | u16 connection; /* Remote connection number */ | |
55 | ||
56 | u8 completion; /* Status message from server */ | |
57 | u8 conn_status; /* Bit 4 = 1 ==> Server going down, no | |
58 | requests allowed anymore. | |
59 | Bit 0 = 1 ==> Server is down. */ | |
60 | ||
61 | int buffer_size; /* Negotiated bufsize */ | |
62 | ||
63 | int reply_size; /* Size of last reply */ | |
64 | ||
65 | int packet_size; | |
66 | unsigned char *packet; /* Here we prepare requests and | |
67 | receive replies */ | |
c5f93cf1 PO |
68 | unsigned char *txbuf; /* Storage for current request */ |
69 | unsigned char *rxbuf; /* Storage for reply to current request */ | |
1da177e4 LT |
70 | |
71 | int lock; /* To prevent mismatch in protocols. */ | |
8e3f9045 | 72 | struct mutex mutex; |
1da177e4 LT |
73 | |
74 | int current_size; /* for packet preparation */ | |
75 | int has_subfunction; | |
76 | int ncp_reply_size; | |
77 | ||
78 | int root_setuped; | |
2e54eb96 | 79 | struct mutex root_setup_lock; |
1da177e4 LT |
80 | |
81 | /* info for packet signing */ | |
82 | int sign_wanted; /* 1=Server needs signed packets */ | |
83 | int sign_active; /* 0=don't do signing, 1=do */ | |
84 | char sign_root[8]; /* generated from password and encr. key */ | |
85 | char sign_last[16]; | |
86 | ||
87 | /* Authentication info: NDS or BINDERY, username */ | |
88 | struct { | |
89 | int auth_type; | |
90 | size_t object_name_len; | |
91 | void* object_name; | |
92 | int object_type; | |
93 | } auth; | |
94 | /* Password info */ | |
95 | struct { | |
96 | size_t len; | |
97 | void* data; | |
98 | } priv; | |
2e54eb96 | 99 | struct rw_semaphore auth_rwsem; |
1da177e4 LT |
100 | |
101 | /* nls info: codepage for volume and charset for I/O */ | |
102 | struct nls_table *nls_vol; | |
103 | struct nls_table *nls_io; | |
104 | ||
105 | /* maximum age in jiffies */ | |
2e54eb96 | 106 | atomic_t dentry_ttl; |
1da177e4 LT |
107 | |
108 | /* miscellaneous */ | |
109 | unsigned int flags; | |
110 | ||
111 | spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */ | |
112 | ||
676d2369 | 113 | void (*data_ready)(struct sock* sk); |
1da177e4 LT |
114 | void (*error_report)(struct sock* sk); |
115 | void (*write_space)(struct sock* sk); /* STREAM mode only */ | |
116 | struct { | |
117 | struct work_struct tq; /* STREAM/DGRAM: data/error ready */ | |
118 | struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ | |
8e3f9045 | 119 | struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ |
1da177e4 LT |
120 | |
121 | unsigned int state; /* STREAM only: receiver state */ | |
122 | struct { | |
bc10502d ED |
123 | __u32 magic __packed; |
124 | __u32 len __packed; | |
125 | __u16 type __packed; | |
126 | __u16 p1 __packed; | |
127 | __u16 p2 __packed; | |
128 | __u16 p3 __packed; | |
129 | __u16 type2 __packed; | |
1da177e4 LT |
130 | } buf; /* STREAM only: temporary buffer */ |
131 | unsigned char* ptr; /* STREAM only: pointer to data */ | |
132 | size_t len; /* STREAM only: length of data to receive */ | |
133 | } rcv; | |
134 | struct { | |
135 | struct list_head requests; /* STREAM only: queued requests */ | |
136 | struct work_struct tq; /* STREAM only: transmitter ready */ | |
137 | struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */ | |
138 | } tx; | |
139 | struct timer_list timeout_tm; /* DGRAM only: timeout timer */ | |
140 | struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */ | |
141 | int timeout_last; /* DGRAM only: current timeout length */ | |
142 | int timeout_retries; /* DGRAM only: retries left */ | |
143 | struct { | |
144 | size_t len; | |
145 | __u8 data[128]; | |
146 | } unexpected_packet; | |
147 | }; | |
148 | ||
c4028958 DH |
149 | extern void ncp_tcp_rcv_proc(struct work_struct *work); |
150 | extern void ncp_tcp_tx_proc(struct work_struct *work); | |
151 | extern void ncpdgram_rcv_proc(struct work_struct *work); | |
152 | extern void ncpdgram_timeout_proc(struct work_struct *work); | |
1da177e4 | 153 | extern void ncpdgram_timeout_call(unsigned long server); |
676d2369 | 154 | extern void ncp_tcp_data_ready(struct sock* sk); |
1da177e4 LT |
155 | extern void ncp_tcp_write_space(struct sock* sk); |
156 | extern 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 | ||
164 | static inline int ncp_conn_valid(struct ncp_server *server) | |
165 | { | |
166 | return ((server->conn_status & 0x11) == 0); | |
167 | } | |
168 | ||
169 | static inline void ncp_invalidate_conn(struct ncp_server *server) | |
170 | { | |
171 | server->conn_status |= 0x01; | |
172 | } | |
173 | ||
1da177e4 | 174 | #endif |