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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | /* * ncplib_kernel.h * * Copyright (C) 1995, 1996 by Volker Lendecke * Modified for big endian by J.F. Chadima and David S. Miller * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache * Modified 1998, 1999 Wolfram Pienkoss for NLS * Modified 1999 Wolfram Pienkoss for directory caching * */ #ifndef _NCPLIB_H #define _NCPLIB_H #include <linux/config.h> #include <linux/fs.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/malloc.h> #include <linux/stat.h> #include <linux/fcntl.h> #include <linux/pagemap.h> #include <asm/uaccess.h> #include <asm/byteorder.h> #include <asm/unaligned.h> #include <asm/string.h> #ifdef CONFIG_NCPFS_NLS #include <linux/nls.h> #else #include <linux/ctype.h> #endif /* CONFIG_NCPFS_NLS */ #include <linux/ncp_fs.h> #define NCP_MIN_SYMLINK_SIZE 8 #define NCP_MAX_SYMLINK_SIZE 512 #define NCP_BLOCK_SHIFT 9 #define NCP_BLOCK_SIZE (1 << (NCP_BLOCK_SHIFT)) int ncp_negotiate_buffersize(struct ncp_server *, int, int *); int ncp_negotiate_size_and_options(struct ncp_server *server, int size, int options, int *ret_size, int *ret_options); int ncp_get_volume_info_with_number(struct ncp_server *, int, struct ncp_volume_info *); int ncp_close_file(struct ncp_server *, const char *); static inline int ncp_read_bounce_size(__u32 size) { return sizeof(struct ncp_reply_header) + 2 + 2 + size + 8; }; int ncp_read_bounce(struct ncp_server *, const char *, __u32, __u16, char *, int *, void* bounce, __u32 bouncelen); int ncp_read_kernel(struct ncp_server *, const char *, __u32, __u16, char *, int *); int ncp_write_kernel(struct ncp_server *, const char *, __u32, __u16, const char *, int *); static inline void ncp_inode_close(struct inode *inode) { atomic_dec(&NCP_FINFO(inode)->opened); } int ncp_obtain_info(struct ncp_server *server, struct inode *, char *, struct nw_info_struct *target); int ncp_lookup_volume(struct ncp_server *, char *, struct nw_info_struct *); int ncp_modify_file_or_subdir_dos_info(struct ncp_server *, struct inode *, __u32, const struct nw_modify_dos_info *info); int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *, struct inode *, const char* path, __u32, const struct nw_modify_dos_info *info); int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*); int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, char *); int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, char *, int, __u32, int, struct ncp_entry_info *); int ncp_initialize_search(struct ncp_server *, struct inode *, struct nw_search_sequence *target); int ncp_search_for_file_or_subdir(struct ncp_server *server, struct nw_search_sequence *seq, struct nw_info_struct *target); int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, struct inode *, char *, struct inode *, char *); int ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, __u8 locktype, __u32 offset, __u32 length, __u16 timeout); #ifdef CONFIG_NCPFS_IOCTL_LOCKING int ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, __u32 offset, __u32 length); #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ #ifdef CONFIG_NCPFS_MOUNT_SUBDIR int ncp_mount_subdir(struct ncp_server *, struct nw_info_struct *, __u8, __u8, __u32); #endif /* CONFIG_NCPFS_MOUNT_SUBDIR */ #ifdef CONFIG_NCPFS_NLS inline unsigned char ncp__tolower(struct nls_table *, unsigned char); inline unsigned char ncp__toupper(struct nls_table *, unsigned char); int ncp__io2vol(struct ncp_server *, unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); int ncp__vol2io(struct ncp_server *, unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); #define NCP_ESC ':' #define NCP_IO_TABLE(dentry) (NCP_SERVER((dentry)->d_inode)->nls_io) #define ncp_tolower(t, c) ncp__tolower(t, c) #define ncp_toupper(t, c) ncp__toupper(t, c) #define ncp_io2vol(S,m,i,n,k,U) ncp__io2vol(S,m,i,n,k,U) #define ncp_vol2io(S,m,i,n,k,U) ncp__vol2io(S,m,i,n,k,U) #else int ncp__io2vol(unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); int ncp__vol2io(unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); #define NCP_IO_TABLE(dentry) NULL #define ncp_tolower(t, c) tolower(c) #define ncp_toupper(t, c) toupper(c) #define ncp_io2vol(S,m,i,n,k,U) ncp__io2vol(m,i,n,k,U) #define ncp_vol2io(S,m,i,n,k,U) ncp__vol2io(m,i,n,k,U) #endif /* CONFIG_NCPFS_NLS */ inline int ncp_strnicmp(struct nls_table *, const unsigned char *, const unsigned char *, int); #define NCP_GET_AGE(dentry) (jiffies - (dentry)->d_time) #define NCP_MAX_AGE(server) ((server)->dentry_ttl) #define NCP_TEST_AGE(server,dentry) (NCP_GET_AGE(dentry) < NCP_MAX_AGE(server)) static inline void ncp_age_dentry(struct ncp_server* server, struct dentry* dentry) { dentry->d_time = jiffies - server->dentry_ttl; } static inline void ncp_new_dentry(struct dentry* dentry) { dentry->d_time = jiffies; } static inline void ncp_renew_dentries(struct dentry *parent) { struct ncp_server *server = NCP_SERVER(parent->d_inode); struct list_head *next; struct dentry *dentry; spin_lock(&dcache_lock); next = parent->d_subdirs.next; while (next != &parent->d_subdirs) { dentry = list_entry(next, struct dentry, d_child); if (dentry->d_fsdata == NULL) ncp_age_dentry(server, dentry); else ncp_new_dentry(dentry); next = next->next; } spin_unlock(&dcache_lock); } static inline void ncp_invalidate_dircache_entries(struct dentry *parent) { struct ncp_server *server = NCP_SERVER(parent->d_inode); struct list_head *next; struct dentry *dentry; spin_lock(&dcache_lock); next = parent->d_subdirs.next; while (next != &parent->d_subdirs) { dentry = list_entry(next, struct dentry, d_child); dentry->d_fsdata = NULL; ncp_age_dentry(server, dentry); next = next->next; } spin_unlock(&dcache_lock); } struct ncp_cache_head { time_t mtime; unsigned long time; /* cache age */ unsigned long end; /* last valid fpos in cache */ int eof; }; #define NCP_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *))) union ncp_dir_cache { struct ncp_cache_head head; struct dentry *dentry[NCP_DIRCACHE_SIZE]; }; #define NCP_FIRSTCACHE_SIZE ((int)((NCP_DIRCACHE_SIZE * \ sizeof(struct dentry *) - sizeof(struct ncp_cache_head)) / \ sizeof(struct dentry *))) #define NCP_DIRCACHE_START (NCP_DIRCACHE_SIZE - NCP_FIRSTCACHE_SIZE) struct ncp_cache_control { struct ncp_cache_head head; struct page *page; union ncp_dir_cache *cache; unsigned long fpos, ofs; int filled, valid, idx; }; #endif /* _NCPLIB_H */ |