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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/smb_fs.h
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))
61 #ifdef DEBUG_SMB_MALLOC
63 #include <linux/slab.h>
65 extern int smb_malloced
;
66 extern int smb_current_vmalloced
;
67 extern int smb_current_kmalloced
;
70 smb_vmalloc(unsigned int size
)
73 smb_current_vmalloced
+= 1;
80 smb_current_vmalloced
-= 1;
85 smb_kmalloc(size_t size
, int flags
)
88 smb_current_kmalloced
+= 1;
89 return kmalloc(size
, flags
);
95 smb_current_kmalloced
-= 1;
99 #else /* DEBUG_SMB_MALLOC */
101 #define smb_kmalloc(s,p) kmalloc(s,p)
102 #define smb_kfree(o) kfree(o)
103 #define smb_vmalloc(s) vmalloc(s)
104 #define smb_vfree(o) vfree(o)
106 #endif /* DEBUG_SMB_MALLOC */
109 * Flags for the in-memory inode
111 #define SMB_F_LOCALWRITE 0x02 /* file modified locally */
114 /* NT1 protocol capability bits */
115 #define SMB_CAP_RAW_MODE 0x00000001
116 #define SMB_CAP_MPX_MODE 0x00000002
117 #define SMB_CAP_UNICODE 0x00000004
118 #define SMB_CAP_LARGE_FILES 0x00000008
119 #define SMB_CAP_NT_SMBS 0x00000010
120 #define SMB_CAP_RPC_REMOTE_APIS 0x00000020
121 #define SMB_CAP_STATUS32 0x00000040
122 #define SMB_CAP_LEVEL_II_OPLOCKS 0x00000080
123 #define SMB_CAP_LOCK_AND_READ 0x00000100
124 #define SMB_CAP_NT_FIND 0x00000200
125 #define SMB_CAP_DFS 0x00001000
126 #define SMB_CAP_LARGE_READX 0x00004000
127 #define SMB_CAP_LARGE_WRITEX 0x00008000
128 #define SMB_CAP_UNIX 0x00800000 /* unofficial ... */
132 * This is the time we allow an inode, dentry or dir cache to live. It is bad
133 * for performance to have shorter ttl on an inode than on the cache. It can
134 * cause refresh on each inode for a dir listing ... one-by-one
136 #define SMB_MAX_AGE(server) (((server)->mnt->ttl * HZ) / 1000)
139 smb_age_dentry(struct smb_sb_info
*server
, struct dentry
*dentry
)
141 dentry
->d_time
= jiffies
- SMB_MAX_AGE(server
);
144 struct smb_cache_head
{
145 time_t mtime
; /* unused */
146 unsigned long time
; /* cache age */
147 unsigned long end
; /* last valid fpos in cache */
151 #define SMB_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
152 union smb_dir_cache
{
153 struct smb_cache_head head
;
154 struct dentry
*dentry
[SMB_DIRCACHE_SIZE
];
157 #define SMB_FIRSTCACHE_SIZE ((int)((SMB_DIRCACHE_SIZE * \
158 sizeof(struct dentry *) - sizeof(struct smb_cache_head)) / \
159 sizeof(struct dentry *)))
161 #define SMB_DIRCACHE_START (SMB_DIRCACHE_SIZE - SMB_FIRSTCACHE_SIZE)
163 struct smb_cache_control
{
164 struct smb_cache_head head
;
166 union smb_dir_cache
*cache
;
167 unsigned long fpos
, ofs
;
168 int filled
, valid
, idx
;
171 #define SMB_OPS_NUM_STATIC 5
173 int (*read
)(struct inode
*inode
, loff_t offset
, int count
,
175 int (*write
)(struct inode
*inode
, loff_t offset
, int count
, const
177 int (*readdir
)(struct file
*filp
, void *dirent
, filldir_t filldir
,
178 struct smb_cache_control
*ctl
);
180 int (*getattr
)(struct smb_sb_info
*server
, struct dentry
*dir
,
181 struct smb_fattr
*fattr
);
182 /* int (*setattr)(...); */ /* setattr is really icky! */
184 int (*truncate
)(struct inode
*inode
, loff_t length
);
187 /* --- --- --- end of "static" entries --- --- --- */
189 int (*convert
)(unsigned char *output
, int olen
,
190 const unsigned char *input
, int ilen
,
191 struct nls_table
*nls_from
,
192 struct nls_table
*nls_to
);
196 smb_is_open(struct inode
*i
)
198 return (SMB_I(i
)->open
== server_from_inode(i
)->generation
);
201 extern void smb_install_null_ops(struct smb_ops
*);
202 #endif /* __KERNEL__ */
204 #endif /* _LINUX_SMB_FS_H */