Commit | Line | Data |
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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 | 12 | #include <linux/types.h> |
424264b7 | 13 | #include <linux/backing-dev.h> |
1da177e4 LT |
14 | #include <linux/smb.h> |
15 | ||
16 | /* | |
17 | * Upper limit on the total number of active smb_request structs. | |
18 | */ | |
19 | #define MAX_REQUEST_HARD 256 | |
20 | ||
21 | enum smb_receive_state { | |
22 | SMB_RECV_START, /* No data read, looking for length + sig */ | |
23 | SMB_RECV_HEADER, /* Reading the header data */ | |
24 | SMB_RECV_HCOMPLETE, /* Done with the header */ | |
25 | SMB_RECV_PARAM, /* Reading parameter words */ | |
26 | SMB_RECV_DATA, /* Reading data bytes */ | |
27 | SMB_RECV_END, /* End of request */ | |
28 | SMB_RECV_DROP, /* Dropping this SMB */ | |
29 | SMB_RECV_REQUEST, /* Received a request and not a reply */ | |
30 | }; | |
31 | ||
32 | /* structure access macros */ | |
33 | #define server_from_inode(inode) SMB_SB((inode)->i_sb) | |
34 | #define server_from_dentry(dentry) SMB_SB((dentry)->d_sb) | |
35 | #define SB_of(server) ((server)->super_block) | |
36 | ||
37 | struct smb_sb_info { | |
38 | /* List of all smbfs superblocks */ | |
39 | struct list_head entry; | |
40 | ||
41 | enum smb_conn_state state; | |
42 | struct file * sock_file; | |
43 | int conn_error; | |
44 | enum smb_receive_state rstate; | |
45 | ||
46 | atomic_t nr_requests; | |
47 | struct list_head xmitq; | |
48 | struct list_head recvq; | |
49 | u16 mid; | |
50 | ||
51 | struct smb_mount_data_kernel *mnt; | |
52 | ||
53 | /* Connections are counted. Each time a new socket arrives, | |
54 | * generation is incremented. | |
55 | */ | |
56 | unsigned int generation; | |
a71113da | 57 | struct pid *conn_pid; |
1da177e4 LT |
58 | struct smb_conn_opt opt; |
59 | wait_queue_head_t conn_wq; | |
60 | int conn_complete; | |
61 | struct semaphore sem; | |
62 | ||
63 | unsigned char header[SMB_HEADER_LEN + 20*2 + 2]; | |
64 | u32 header_len; | |
65 | u32 smb_len; | |
66 | u32 smb_read; | |
67 | ||
68 | /* We use our own data_ready callback, but need the original one */ | |
69 | void *data_ready; | |
70 | ||
71 | /* nls pointers for codepage conversions */ | |
72 | struct nls_table *remote_nls; | |
73 | struct nls_table *local_nls; | |
74 | ||
75 | struct smb_ops *ops; | |
76 | ||
77 | struct super_block *super_block; | |
424264b7 JA |
78 | |
79 | struct backing_dev_info bdi; | |
1da177e4 LT |
80 | }; |
81 | ||
82 | static inline int | |
83 | smb_lock_server_interruptible(struct smb_sb_info *server) | |
84 | { | |
85 | return down_interruptible(&(server->sem)); | |
86 | } | |
87 | ||
88 | static inline void | |
89 | smb_lock_server(struct smb_sb_info *server) | |
90 | { | |
91 | down(&(server->sem)); | |
92 | } | |
93 | ||
94 | static inline void | |
95 | smb_unlock_server(struct smb_sb_info *server) | |
96 | { | |
97 | up(&(server->sem)); | |
98 | } | |
99 | ||
1da177e4 | 100 | #endif |