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-rw-r--r--fs/ncpfs/ncplib_kernel.h259
1 files changed, 259 insertions, 0 deletions
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
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+++ b/fs/ncpfs/ncplib_kernel.h
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1/*
2 * ncplib_kernel.h
3 *
4 * Copyright (C) 1995, 1996 by Volker Lendecke
5 * Modified for big endian by J.F. Chadima and David S. Miller
6 * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
7 * Modified 1998, 1999 Wolfram Pienkoss for NLS
8 * Modified 1999 Wolfram Pienkoss for directory caching
9 *
10 */
11
12#ifndef _NCPLIB_H
13#define _NCPLIB_H
14
15#include <linux/config.h>
16
17#include <linux/fs.h>
18#include <linux/types.h>
19#include <linux/errno.h>
20#include <linux/slab.h>
21#include <linux/stat.h>
22#include <linux/fcntl.h>
23#include <linux/pagemap.h>
24
25#include <asm/uaccess.h>
26#include <asm/byteorder.h>
27#include <asm/unaligned.h>
28#include <asm/string.h>
29
30#ifdef CONFIG_NCPFS_NLS
31#include <linux/nls.h>
32#else
33#include <linux/ctype.h>
34#endif /* CONFIG_NCPFS_NLS */
35
36#include <linux/ncp_fs.h>
37
38#define NCP_MIN_SYMLINK_SIZE 8
39#define NCP_MAX_SYMLINK_SIZE 512
40
41#define NCP_BLOCK_SHIFT 9
42#define NCP_BLOCK_SIZE (1 << (NCP_BLOCK_SHIFT))
43
44int ncp_negotiate_buffersize(struct ncp_server *, int, int *);
45int ncp_negotiate_size_and_options(struct ncp_server *server, int size,
46 int options, int *ret_size, int *ret_options);
47
48int ncp_get_volume_info_with_number(struct ncp_server* server, int n,
49 struct ncp_volume_info *target);
50
51int ncp_get_directory_info(struct ncp_server* server, __u8 dirhandle,
52 struct ncp_volume_info* target);
53
54int ncp_close_file(struct ncp_server *, const char *);
55static inline int ncp_read_bounce_size(__u32 size) {
56 return sizeof(struct ncp_reply_header) + 2 + 2 + size + 8;
57};
58int ncp_read_bounce(struct ncp_server *, const char *, __u32, __u16,
59 char __user *, int *, void* bounce, __u32 bouncelen);
60int ncp_read_kernel(struct ncp_server *, const char *, __u32, __u16,
61 char *, int *);
62int ncp_write_kernel(struct ncp_server *, const char *, __u32, __u16,
63 const char *, int *);
64
65static inline void ncp_inode_close(struct inode *inode) {
66 atomic_dec(&NCP_FINFO(inode)->opened);
67}
68
69void ncp_extract_file_info(void* src, struct nw_info_struct* target);
70int ncp_obtain_info(struct ncp_server *server, struct inode *, char *,
71 struct nw_info_struct *target);
72int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target);
73int ncp_get_volume_root(struct ncp_server *server, const char *volname,
74 __u32 *volume, __le32 *dirent, __le32 *dosdirent);
75int ncp_lookup_volume(struct ncp_server *, const char *, struct nw_info_struct *);
76int ncp_modify_file_or_subdir_dos_info(struct ncp_server *, struct inode *,
77 __le32, const struct nw_modify_dos_info *info);
78int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *, struct inode *,
79 const char* path, __le32, const struct nw_modify_dos_info *info);
80int ncp_modify_nfs_info(struct ncp_server *, __u8 volnum, __le32 dirent,
81 __u32 mode, __u32 rdev);
82
83int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*);
84int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, char *);
85int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, char *,
86 int, __le32, __le16, struct ncp_entry_info *);
87
88int ncp_initialize_search(struct ncp_server *, struct inode *,
89 struct nw_search_sequence *target);
90int ncp_search_for_file_or_subdir(struct ncp_server *server,
91 struct nw_search_sequence *seq,
92 struct nw_info_struct *target);
93int ncp_search_for_fileset(struct ncp_server *server,
94 struct nw_search_sequence *seq,
95 int* more, int* cnt,
96 char* buffer, size_t bufsize,
97 char** rbuf, size_t* rsize);
98
99int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server,
100 struct inode *, char *, struct inode *, char *);
101
102
103int
104ncp_LogPhysicalRecord(struct ncp_server *server,
105 const char *file_id, __u8 locktype,
106 __u32 offset, __u32 length, __u16 timeout);
107
108#ifdef CONFIG_NCPFS_IOCTL_LOCKING
109int
110ncp_ClearPhysicalRecord(struct ncp_server *server,
111 const char *file_id,
112 __u32 offset, __u32 length);
113#endif /* CONFIG_NCPFS_IOCTL_LOCKING */
114
115int
116ncp_mount_subdir(struct ncp_server *, __u8, __u8, __le32,
117 __u32* volume, __le32* dirent, __le32* dosdirent);
118int ncp_dirhandle_alloc(struct ncp_server *, __u8 vol, __le32 dirent, __u8 *dirhandle);
119int ncp_dirhandle_free(struct ncp_server *, __u8 dirhandle);
120
121int ncp_create_new(struct inode *dir, struct dentry *dentry,
122 int mode, dev_t rdev, __le32 attributes);
123
124static inline int ncp_is_nfs_extras(struct ncp_server* server, unsigned int volnum) {
125#ifdef CONFIG_NCPFS_NFS_NS
126 return (server->m.flags & NCP_MOUNT_NFS_EXTRAS) &&
127 (server->name_space[volnum] == NW_NS_NFS);
128#else
129 return 0;
130#endif
131}
132
133#ifdef CONFIG_NCPFS_NLS
134
135int ncp__io2vol(struct ncp_server *, unsigned char *, unsigned int *,
136 const unsigned char *, unsigned int, int);
137int ncp__vol2io(struct ncp_server *, unsigned char *, unsigned int *,
138 const unsigned char *, unsigned int, int);
139
140#define NCP_ESC ':'
141#define NCP_IO_TABLE(dentry) (NCP_SERVER((dentry)->d_inode)->nls_io)
142#define ncp_tolower(t, c) nls_tolower(t, c)
143#define ncp_toupper(t, c) nls_toupper(t, c)
144#define ncp_strnicmp(t, s1, s2, len) \
145 nls_strnicmp(t, s1, s2, len)
146#define ncp_io2vol(S,m,i,n,k,U) ncp__io2vol(S,m,i,n,k,U)
147#define ncp_vol2io(S,m,i,n,k,U) ncp__vol2io(S,m,i,n,k,U)
148
149#else
150
151int ncp__io2vol(unsigned char *, unsigned int *,
152 const unsigned char *, unsigned int, int);
153int ncp__vol2io(unsigned char *, unsigned int *,
154 const unsigned char *, unsigned int, int);
155
156#define NCP_IO_TABLE(dentry) NULL
157#define ncp_tolower(t, c) tolower(c)
158#define ncp_toupper(t, c) toupper(c)
159#define ncp_io2vol(S,m,i,n,k,U) ncp__io2vol(m,i,n,k,U)
160#define ncp_vol2io(S,m,i,n,k,U) ncp__vol2io(m,i,n,k,U)
161
162
163static inline int ncp_strnicmp(struct nls_table *t, const unsigned char *s1,
164 const unsigned char *s2, int len)
165{
166 while (len--) {
167 if (tolower(*s1++) != tolower(*s2++))
168 return 1;
169 }
170
171 return 0;
172}
173
174#endif /* CONFIG_NCPFS_NLS */
175
176#define NCP_GET_AGE(dentry) (jiffies - (dentry)->d_time)
177#define NCP_MAX_AGE(server) ((server)->dentry_ttl)
178#define NCP_TEST_AGE(server,dentry) (NCP_GET_AGE(dentry) < NCP_MAX_AGE(server))
179
180static inline void
181ncp_age_dentry(struct ncp_server* server, struct dentry* dentry)
182{
183 dentry->d_time = jiffies - server->dentry_ttl;
184}
185
186static inline void
187ncp_new_dentry(struct dentry* dentry)
188{
189 dentry->d_time = jiffies;
190}
191
192static inline void
193ncp_renew_dentries(struct dentry *parent)
194{
195 struct ncp_server *server = NCP_SERVER(parent->d_inode);
196 struct list_head *next;
197 struct dentry *dentry;
198
199 spin_lock(&dcache_lock);
200 next = parent->d_subdirs.next;
201 while (next != &parent->d_subdirs) {
202 dentry = list_entry(next, struct dentry, d_child);
203
204 if (dentry->d_fsdata == NULL)
205 ncp_age_dentry(server, dentry);
206 else
207 ncp_new_dentry(dentry);
208
209 next = next->next;
210 }
211 spin_unlock(&dcache_lock);
212}
213
214static inline void
215ncp_invalidate_dircache_entries(struct dentry *parent)
216{
217 struct ncp_server *server = NCP_SERVER(parent->d_inode);
218 struct list_head *next;
219 struct dentry *dentry;
220
221 spin_lock(&dcache_lock);
222 next = parent->d_subdirs.next;
223 while (next != &parent->d_subdirs) {
224 dentry = list_entry(next, struct dentry, d_child);
225 dentry->d_fsdata = NULL;
226 ncp_age_dentry(server, dentry);
227 next = next->next;
228 }
229 spin_unlock(&dcache_lock);
230}
231
232struct ncp_cache_head {
233 time_t mtime;
234 unsigned long time; /* cache age */
235 unsigned long end; /* last valid fpos in cache */
236 int eof;
237};
238
239#define NCP_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
240union ncp_dir_cache {
241 struct ncp_cache_head head;
242 struct dentry *dentry[NCP_DIRCACHE_SIZE];
243};
244
245#define NCP_FIRSTCACHE_SIZE ((int)((NCP_DIRCACHE_SIZE * \
246 sizeof(struct dentry *) - sizeof(struct ncp_cache_head)) / \
247 sizeof(struct dentry *)))
248
249#define NCP_DIRCACHE_START (NCP_DIRCACHE_SIZE - NCP_FIRSTCACHE_SIZE)
250
251struct ncp_cache_control {
252 struct ncp_cache_head head;
253 struct page *page;
254 union ncp_dir_cache *cache;
255 unsigned long fpos, ofs;
256 int filled, valid, idx;
257};
258
259#endif /* _NCPLIB_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 22:31:02 -0500