4 * Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke
5 * Copyright (C) 1997 by Volker Lendecke
9 #ifndef _LINUX_SMB_FS_H
10 #define _LINUX_SMB_FS_H
12 #include <linux/smb.h>
17 #define SMB_IOC_GETMOUNTUID _IOR('u', 1, __kernel_old_uid_t)
18 #define SMB_IOC_NEWCONN _IOW('u', 2, struct smb_conn_opt)
20 /* __kernel_uid_t can never change, so we have to use __kernel_uid32_t */
21 #define SMB_IOC_GETMOUNTUID32 _IOR('u', 3, __kernel_uid32_t)
25 #include <linux/smb_fs_i.h>
26 #include <linux/smb_fs_sb.h>
29 #include <linux/pagemap.h>
30 #include <linux/vmalloc.h>
31 #include <linux/smb_mount.h>
32 #include <linux/jiffies.h>
33 #include <asm/unaligned.h>
35 static inline struct smb_sb_info
*SMB_SB(struct super_block
*sb
)
40 static inline struct smb_inode_info
*SMB_I(struct inode
*inode
)
42 return container_of(inode
, struct smb_inode_info
, vfs_inode
);
45 /* macro names are short for word, double-word, long value (?) */
46 #define WVAL(buf, pos) (get_unaligned_le16((u8 *)(buf) + (pos)))
47 #define DVAL(buf, pos) (get_unaligned_le32((u8 *)(buf) + (pos)))
48 #define LVAL(buf, pos) (get_unaligned_le64((u8 *)(buf) + (pos)))
50 #define WSET(buf, pos, val) put_unaligned_le16((val), (u8 *)(buf) + (pos))
51 #define DSET(buf, pos, val) put_unaligned_le32((val), (u8 *)(buf) + (pos))
52 #define LSET(buf, pos, val) put_unaligned_le64((val), (u8 *)(buf) + (pos))
54 /* where to find the base of the SMB packet proper */
55 #define smb_base(buf) ((u8 *)(((u8 *)(buf))+4))
58 * Flags for the in-memory inode
60 #define SMB_F_LOCALWRITE 0x02 /* file modified locally */
63 /* NT1 protocol capability bits */
64 #define SMB_CAP_RAW_MODE 0x00000001
65 #define SMB_CAP_MPX_MODE 0x00000002
66 #define SMB_CAP_UNICODE 0x00000004
67 #define SMB_CAP_LARGE_FILES 0x00000008
68 #define SMB_CAP_NT_SMBS 0x00000010
69 #define SMB_CAP_RPC_REMOTE_APIS 0x00000020
70 #define SMB_CAP_STATUS32 0x00000040
71 #define SMB_CAP_LEVEL_II_OPLOCKS 0x00000080
72 #define SMB_CAP_LOCK_AND_READ 0x00000100
73 #define SMB_CAP_NT_FIND 0x00000200
74 #define SMB_CAP_DFS 0x00001000
75 #define SMB_CAP_LARGE_READX 0x00004000
76 #define SMB_CAP_LARGE_WRITEX 0x00008000
77 #define SMB_CAP_UNIX 0x00800000 /* unofficial ... */
81 * This is the time we allow an inode, dentry or dir cache to live. It is bad
82 * for performance to have shorter ttl on an inode than on the cache. It can
83 * cause refresh on each inode for a dir listing ... one-by-one
85 #define SMB_MAX_AGE(server) (((server)->mnt->ttl * HZ) / 1000)
88 smb_age_dentry(struct smb_sb_info
*server
, struct dentry
*dentry
)
90 dentry
->d_time
= jiffies
- SMB_MAX_AGE(server
);
93 struct smb_cache_head
{
94 time_t mtime
; /* unused */
95 unsigned long time
; /* cache age */
96 unsigned long end
; /* last valid fpos in cache */
100 #define SMB_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
101 union smb_dir_cache
{
102 struct smb_cache_head head
;
103 struct dentry
*dentry
[SMB_DIRCACHE_SIZE
];
106 #define SMB_FIRSTCACHE_SIZE ((int)((SMB_DIRCACHE_SIZE * \
107 sizeof(struct dentry *) - sizeof(struct smb_cache_head)) / \
108 sizeof(struct dentry *)))
110 #define SMB_DIRCACHE_START (SMB_DIRCACHE_SIZE - SMB_FIRSTCACHE_SIZE)
112 struct smb_cache_control
{
113 struct smb_cache_head head
;
115 union smb_dir_cache
*cache
;
116 unsigned long fpos
, ofs
;
117 int filled
, valid
, idx
;
120 #define SMB_OPS_NUM_STATIC 5
122 int (*read
)(struct inode
*inode
, loff_t offset
, int count
,
124 int (*write
)(struct inode
*inode
, loff_t offset
, int count
, const
126 int (*readdir
)(struct file
*filp
, void *dirent
, filldir_t filldir
,
127 struct smb_cache_control
*ctl
);
129 int (*getattr
)(struct smb_sb_info
*server
, struct dentry
*dir
,
130 struct smb_fattr
*fattr
);
131 /* int (*setattr)(...); */ /* setattr is really icky! */
133 int (*truncate
)(struct inode
*inode
, loff_t length
);
136 /* --- --- --- end of "static" entries --- --- --- */
138 int (*convert
)(unsigned char *output
, int olen
,
139 const unsigned char *input
, int ilen
,
140 struct nls_table
*nls_from
,
141 struct nls_table
*nls_to
);
145 smb_is_open(struct inode
*i
)
147 return (SMB_I(i
)->open
== server_from_inode(i
)->generation
);
150 extern void smb_install_null_ops(struct smb_ops
*);
151 #endif /* __KERNEL__ */
153 #endif /* _LINUX_SMB_FS_H */
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