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1da177e4 LT |
1 | /* |
2 | * smb_fs_sb.h | |
3 | * | |
4 | * Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke | |
5 | * Copyright (C) 1997 by Volker Lendecke | |
6 | * | |
7 | */ | |
8 | ||
9 | #ifndef _SMB_FS_SB | |
10 | #define _SMB_FS_SB | |
11 | ||
1da177e4 LT |
12 | #include <linux/types.h> |
13 | #include <linux/smb.h> | |
14 | ||
15 | /* | |
16 | * Upper limit on the total number of active smb_request structs. | |
17 | */ | |
18 | #define MAX_REQUEST_HARD 256 | |
19 | ||
20 | enum smb_receive_state { | |
21 | SMB_RECV_START, /* No data read, looking for length + sig */ | |
22 | SMB_RECV_HEADER, /* Reading the header data */ | |
23 | SMB_RECV_HCOMPLETE, /* Done with the header */ | |
24 | SMB_RECV_PARAM, /* Reading parameter words */ | |
25 | SMB_RECV_DATA, /* Reading data bytes */ | |
26 | SMB_RECV_END, /* End of request */ | |
27 | SMB_RECV_DROP, /* Dropping this SMB */ | |
28 | SMB_RECV_REQUEST, /* Received a request and not a reply */ | |
29 | }; | |
30 | ||
31 | /* structure access macros */ | |
32 | #define server_from_inode(inode) SMB_SB((inode)->i_sb) | |
33 | #define server_from_dentry(dentry) SMB_SB((dentry)->d_sb) | |
34 | #define SB_of(server) ((server)->super_block) | |
35 | ||
36 | struct smb_sb_info { | |
37 | /* List of all smbfs superblocks */ | |
38 | struct list_head entry; | |
39 | ||
40 | enum smb_conn_state state; | |
41 | struct file * sock_file; | |
42 | int conn_error; | |
43 | enum smb_receive_state rstate; | |
44 | ||
45 | atomic_t nr_requests; | |
46 | struct list_head xmitq; | |
47 | struct list_head recvq; | |
48 | u16 mid; | |
49 | ||
50 | struct smb_mount_data_kernel *mnt; | |
51 | ||
52 | /* Connections are counted. Each time a new socket arrives, | |
53 | * generation is incremented. | |
54 | */ | |
55 | unsigned int generation; | |
a71113da | 56 | struct pid *conn_pid; |
1da177e4 LT |
57 | struct smb_conn_opt opt; |
58 | wait_queue_head_t conn_wq; | |
59 | int conn_complete; | |
60 | struct semaphore sem; | |
61 | ||
62 | unsigned char header[SMB_HEADER_LEN + 20*2 + 2]; | |
63 | u32 header_len; | |
64 | u32 smb_len; | |
65 | u32 smb_read; | |
66 | ||
67 | /* We use our own data_ready callback, but need the original one */ | |
68 | void *data_ready; | |
69 | ||
70 | /* nls pointers for codepage conversions */ | |
71 | struct nls_table *remote_nls; | |
72 | struct nls_table *local_nls; | |
73 | ||
74 | struct smb_ops *ops; | |
75 | ||
76 | struct super_block *super_block; | |
77 | }; | |
78 | ||
79 | static inline int | |
80 | smb_lock_server_interruptible(struct smb_sb_info *server) | |
81 | { | |
82 | return down_interruptible(&(server->sem)); | |
83 | } | |
84 | ||
85 | static inline void | |
86 | smb_lock_server(struct smb_sb_info *server) | |
87 | { | |
88 | down(&(server->sem)); | |
89 | } | |
90 | ||
91 | static inline void | |
92 | smb_unlock_server(struct smb_sb_info *server) | |
93 | { | |
94 | up(&(server->sem)); | |
95 | } | |
96 | ||
1da177e4 | 97 | #endif |