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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * smb_fs_sb.h |
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| 3 | * |
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| 4 | * Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke |
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| 5 | * Copyright (C) 1997 by Volker Lendecke |
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| 6 | * |
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| 7 | */ |
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| 8 | |||
| 9 | #ifndef _SMB_FS_SB |
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| 10 | #define _SMB_FS_SB |
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| 11 | |||
| 12 | #ifdef __KERNEL__ |
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| 13 | |||
| 14 | #include <linux/types.h> |
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| 15 | #include <linux/smb.h> |
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| 16 | |||
| 17 | /* |
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| 18 | * Upper limit on the total number of active smb_request structs. |
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| 19 | */ |
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| 20 | #define MAX_REQUEST_HARD 256 |
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| 21 | |||
| 22 | enum smb_receive_state { |
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| 23 | SMB_RECV_START, /* No data read, looking for length + sig */ |
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| 24 | SMB_RECV_HEADER, /* Reading the header data */ |
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| 25 | SMB_RECV_HCOMPLETE, /* Done with the header */ |
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| 26 | SMB_RECV_PARAM, /* Reading parameter words */ |
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| 27 | SMB_RECV_DATA, /* Reading data bytes */ |
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| 28 | SMB_RECV_END, /* End of request */ |
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| 29 | SMB_RECV_DROP, /* Dropping this SMB */ |
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| 30 | SMB_RECV_REQUEST, /* Received a request and not a reply */ |
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| 31 | }; |
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| 32 | |||
| 33 | /* structure access macros */ |
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| 34 | #define server_from_inode(inode) SMB_SB((inode)->i_sb) |
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| 35 | #define server_from_dentry(dentry) SMB_SB((dentry)->d_sb) |
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| 36 | #define SB_of(server) ((server)->super_block) |
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| 37 | |||
| 38 | struct smb_sb_info { |
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| 39 | /* List of all smbfs superblocks */ |
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| 40 | struct list_head entry; |
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| 41 | |||
| 42 | enum smb_conn_state state; |
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| 43 | struct file * sock_file; |
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| 44 | int conn_error; |
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| 45 | enum smb_receive_state rstate; |
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| 46 | |||
| 47 | atomic_t nr_requests; |
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| 48 | struct list_head xmitq; |
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| 49 | struct list_head recvq; |
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| 50 | u16 mid; |
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| 51 | |||
| 52 | struct smb_mount_data_kernel *mnt; |
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| 53 | |||
| 54 | /* Connections are counted. Each time a new socket arrives, |
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| 55 | * generation is incremented. |
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| 56 | */ |
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| 57 | unsigned int generation; |
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| 58 | pid_t conn_pid; |
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| 59 | struct smb_conn_opt opt; |
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| 60 | |||
| 61 | struct semaphore sem; |
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| 62 | |||
| 63 | unsigned short rcls; /* The error codes we received */ |
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| 64 | unsigned short err; |
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| 65 | |||
| 66 | unsigned char header[SMB_HEADER_LEN + 20*2 + 2]; |
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| 67 | u32 header_len; |
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| 68 | u32 smb_len; |
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| 69 | u32 smb_read; |
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| 70 | |||
| 71 | /* We use our own data_ready callback, but need the original one */ |
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| 72 | void *data_ready; |
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| 73 | |||
| 74 | /* nls pointers for codepage conversions */ |
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| 75 | struct nls_table *remote_nls; |
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| 76 | struct nls_table *local_nls; |
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| 77 | |||
| 78 | struct smb_ops *ops; |
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| 79 | |||
| 80 | struct super_block *super_block; |
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| 81 | }; |
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| 82 | |||
| 83 | static inline int |
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| 84 | smb_lock_server_interruptible(struct smb_sb_info *server) |
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| 85 | { |
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| 86 | return down_interruptible(&(server->sem)); |
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| 87 | } |
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| 88 | |||
| 89 | static inline void |
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| 90 | smb_lock_server(struct smb_sb_info *server) |
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| 91 | { |
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| 92 | down(&(server->sem)); |
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| 93 | } |
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| 94 | |||
| 95 | static inline void |
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| 96 | smb_unlock_server(struct smb_sb_info *server) |
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| 97 | { |
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| 98 | up(&(server->sem)); |
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| 99 | } |
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| 100 | |||
| 101 | #endif /* __KERNEL__ */ |
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| 102 | |||
| 103 | #endif |