1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* smb_fs.h
*
* Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke
* Copyright (C) 1997 by Volker Lendecke
*
*/
#ifndef _LINUX_SMB_FS_H
#define _LINUX_SMB_FS_H
#include <linux/jiffies.h>
#include <linux/smb.h>
/*
* ioctl commands
*/
#define SMB_IOC_GETMOUNTUID _IOR('u', 1, __kernel_old_uid_t)
#define SMB_IOC_NEWCONN _IOW('u', 2, struct smb_conn_opt)
/* __kernel_uid_t can never change, so we have to use __kernel_uid32_t */
#define SMB_IOC_GETMOUNTUID32 _IOR('u', 3, __kernel_uid32_t)
#ifdef __KERNEL__
#include <linux/smb_fs_i.h>
#include <linux/smb_fs_sb.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/vmalloc.h>
#include <linux/smb_mount.h>
#include <asm/unaligned.h>
static inline struct smb_sb_info *SMB_SB(struct super_block *sb)
{
return sb->s_fs_info;
}
static inline struct smb_inode_info *SMB_I(struct inode *inode)
{
return container_of(inode, struct smb_inode_info, vfs_inode);
}
/* macro names are short for word, double-word, long value (?) */
#define WVAL(buf,pos) \
(le16_to_cpu(get_unaligned((__le16 *)((u8 *)(buf) + (pos)))))
#define DVAL(buf,pos) \
(le32_to_cpu(get_unaligned((__le32 *)((u8 *)(buf) + (pos)))))
#define LVAL(buf,pos) \
(le64_to_cpu(get_unaligned((__le64 *)((u8 *)(buf) + (pos)))))
#define WSET(buf,pos,val) \
put_unaligned(cpu_to_le16((u16)(val)), (__le16 *)((u8 *)(buf) + (pos)))
#define DSET(buf,pos,val) \
put_unaligned(cpu_to_le32((u32)(val)), (__le32 *)((u8 *)(buf) + (pos)))
#define LSET(buf,pos,val) \
put_unaligned(cpu_to_le64((u64)(val)), (__le64 *)((u8 *)(buf) + (pos)))
/* where to find the base of the SMB packet proper */
#define smb_base(buf) ((u8 *)(((u8 *)(buf))+4))
/*
* Flags for the in-memory inode
*/
#define SMB_F_LOCALWRITE 0x02 /* file modified locally */
/* NT1 protocol capability bits */
#define SMB_CAP_RAW_MODE 0x00000001
#define SMB_CAP_MPX_MODE 0x00000002
#define SMB_CAP_UNICODE 0x00000004
#define SMB_CAP_LARGE_FILES 0x00000008
#define SMB_CAP_NT_SMBS 0x00000010
#define SMB_CAP_RPC_REMOTE_APIS 0x00000020
#define SMB_CAP_STATUS32 0x00000040
#define SMB_CAP_LEVEL_II_OPLOCKS 0x00000080
#define SMB_CAP_LOCK_AND_READ 0x00000100
#define SMB_CAP_NT_FIND 0x00000200
#define SMB_CAP_DFS 0x00001000
#define SMB_CAP_LARGE_READX 0x00004000
#define SMB_CAP_LARGE_WRITEX 0x00008000
#define SMB_CAP_UNIX 0x00800000 /* unofficial ... */
/*
* This is the time we allow an inode, dentry or dir cache to live. It is bad
* for performance to have shorter ttl on an inode than on the cache. It can
* cause refresh on each inode for a dir listing ... one-by-one
*/
#define SMB_MAX_AGE(server) (((server)->mnt->ttl * HZ) / 1000)
static inline void
smb_age_dentry(struct smb_sb_info *server, struct dentry *dentry)
{
dentry->d_time = jiffies - SMB_MAX_AGE(server);
}
struct smb_cache_head {
time_t mtime; /* unused */
unsigned long time; /* cache age */
unsigned long end; /* last valid fpos in cache */
int eof;
};
#define SMB_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
union smb_dir_cache {
struct smb_cache_head head;
struct dentry *dentry[SMB_DIRCACHE_SIZE];
};
#define SMB_FIRSTCACHE_SIZE ((int)((SMB_DIRCACHE_SIZE * \
sizeof(struct dentry *) - sizeof(struct smb_cache_head)) / \
sizeof(struct dentry *)))
#define SMB_DIRCACHE_START (SMB_DIRCACHE_SIZE - SMB_FIRSTCACHE_SIZE)
struct smb_cache_control {
struct smb_cache_head head;
struct page *page;
union smb_dir_cache *cache;
unsigned long fpos, ofs;
int filled, valid, idx;
};
#define SMB_OPS_NUM_STATIC 5
struct smb_ops {
int (*read)(struct inode *inode, loff_t offset, int count,
char *data);
int (*write)(struct inode *inode, loff_t offset, int count, const
char *data);
int (*readdir)(struct file *filp, void *dirent, filldir_t filldir,
struct smb_cache_control *ctl);
int (*getattr)(struct smb_sb_info *server, struct dentry *dir,
struct smb_fattr *fattr);
/* int (*setattr)(...); */ /* setattr is really icky! */
int (*truncate)(struct inode *inode, loff_t length);
/* --- --- --- end of "static" entries --- --- --- */
int (*convert)(unsigned char *output, int olen,
const unsigned char *input, int ilen,
struct nls_table *nls_from,
struct nls_table *nls_to);
};
static inline int
smb_is_open(struct inode *i)
{
return (SMB_I(i)->open == server_from_inode(i)->generation);
}
extern void smb_install_null_ops(struct smb_ops *);
#endif /* __KERNEL__ */
#endif /* _LINUX_SMB_FS_H */
|
