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>
13 #include <linux/smb_fs_i.h>
14 #include <linux/smb_fs_sb.h>
19 #define SMB_IOC_GETMOUNTUID _IOR('u', 1, __kernel_old_uid_t)
20 #define SMB_IOC_NEWCONN _IOW('u', 2, struct smb_conn_opt)
22 /* __kernel_uid_t can never change, so we have to use __kernel_uid32_t */
23 #define SMB_IOC_GETMOUNTUID32 _IOR('u', 3, __kernel_uid32_t)
29 #include <linux/pagemap.h>
30 #include <linux/vmalloc.h>
31 #include <linux/smb_mount.h>
32 #include <asm/unaligned.h>
34 static inline struct smb_sb_info
*SMB_SB(struct super_block
*sb
)
39 static inline struct smb_inode_info
*SMB_I(struct inode
*inode
)
41 return container_of(inode
, struct smb_inode_info
, vfs_inode
);
44 /* macro names are short for word, double-word, long value (?) */
45 #define WVAL(buf,pos) \
46 (le16_to_cpu(get_unaligned((u16 *)((u8 *)(buf) + (pos)))))
47 #define DVAL(buf,pos) \
48 (le32_to_cpu(get_unaligned((u32 *)((u8 *)(buf) + (pos)))))
49 #define LVAL(buf,pos) \
50 (le64_to_cpu(get_unaligned((u64 *)((u8 *)(buf) + (pos)))))
51 #define WSET(buf,pos,val) \
52 put_unaligned(cpu_to_le16((u16)(val)), (u16 *)((u8 *)(buf) + (pos)))
53 #define DSET(buf,pos,val) \
54 put_unaligned(cpu_to_le32((u32)(val)), (u32 *)((u8 *)(buf) + (pos)))
55 #define LSET(buf,pos,val) \
56 put_unaligned(cpu_to_le64((u64)(val)), (u64 *)((u8 *)(buf) + (pos)))
58 /* where to find the base of the SMB packet proper */
59 #define smb_base(buf) ((u8 *)(((u8 *)(buf))+4))
62 * Flags for the in-memory inode
64 #define SMB_F_LOCALWRITE 0x02 /* file modified locally */
67 /* NT1 protocol capability bits */
68 #define SMB_CAP_RAW_MODE 0x00000001
69 #define SMB_CAP_MPX_MODE 0x00000002
70 #define SMB_CAP_UNICODE 0x00000004
71 #define SMB_CAP_LARGE_FILES 0x00000008
72 #define SMB_CAP_NT_SMBS 0x00000010
73 #define SMB_CAP_RPC_REMOTE_APIS 0x00000020
74 #define SMB_CAP_STATUS32 0x00000040
75 #define SMB_CAP_LEVEL_II_OPLOCKS 0x00000080
76 #define SMB_CAP_LOCK_AND_READ 0x00000100
77 #define SMB_CAP_NT_FIND 0x00000200
78 #define SMB_CAP_DFS 0x00001000
79 #define SMB_CAP_LARGE_READX 0x00004000
80 #define SMB_CAP_LARGE_WRITEX 0x00008000
81 #define SMB_CAP_UNIX 0x00800000 /* unofficial ... */
85 * This is the time we allow an inode, dentry or dir cache to live. It is bad
86 * for performance to have shorter ttl on an inode than on the cache. It can
87 * cause refresh on each inode for a dir listing ... one-by-one
89 #define SMB_MAX_AGE(server) (((server)->mnt->ttl * HZ) / 1000)
92 smb_age_dentry(struct smb_sb_info
*server
, struct dentry
*dentry
)
94 dentry
->d_time
= jiffies
- SMB_MAX_AGE(server
);
97 struct smb_cache_head
{
98 time_t mtime
; /* unused */
99 unsigned long time
; /* cache age */
100 unsigned long end
; /* last valid fpos in cache */
104 #define SMB_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
105 union smb_dir_cache
{
106 struct smb_cache_head head
;
107 struct dentry
*dentry
[SMB_DIRCACHE_SIZE
];
110 #define SMB_FIRSTCACHE_SIZE ((int)((SMB_DIRCACHE_SIZE * \
111 sizeof(struct dentry *) - sizeof(struct smb_cache_head)) / \
112 sizeof(struct dentry *)))
114 #define SMB_DIRCACHE_START (SMB_DIRCACHE_SIZE - SMB_FIRSTCACHE_SIZE)
116 struct smb_cache_control
{
117 struct smb_cache_head head
;
119 union smb_dir_cache
*cache
;
120 unsigned long fpos
, ofs
;
121 int filled
, valid
, idx
;
124 #define SMB_OPS_NUM_STATIC 5
126 int (*read
)(struct inode
*inode
, loff_t offset
, int count
,
128 int (*write
)(struct inode
*inode
, loff_t offset
, int count
, const
130 int (*readdir
)(struct file
*filp
, void *dirent
, filldir_t filldir
,
131 struct smb_cache_control
*ctl
);
133 int (*getattr
)(struct smb_sb_info
*server
, struct dentry
*dir
,
134 struct smb_fattr
*fattr
);
135 /* int (*setattr)(...); */ /* setattr is really icky! */
137 int (*truncate
)(struct inode
*inode
, loff_t length
);
140 /* --- --- --- end of "static" entries --- --- --- */
142 int (*convert
)(unsigned char *output
, int olen
,
143 const unsigned char *input
, int ilen
,
144 struct nls_table
*nls_from
,
145 struct nls_table
*nls_to
);
149 smb_is_open(struct inode
*i
)
151 return (SMB_I(i
)->open
== server_from_inode(i
)->generation
);
154 extern void smb_install_null_ops(struct smb_ops
*);
155 #endif /* __KERNEL__ */
157 #endif /* _LINUX_SMB_FS_H */