| /* |
| * 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/fs.h> |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/slab.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 */ |
| |
| #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* server, int n, |
| struct ncp_volume_info *target); |
| |
| int ncp_get_directory_info(struct ncp_server* server, __u8 dirhandle, |
| struct ncp_volume_info* target); |
| |
| 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 __user *, 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); |
| } |
| |
| void ncp_extract_file_info(const void* src, struct nw_info_struct* target); |
| int ncp_obtain_info(struct ncp_server *server, struct inode *, const char *, |
| struct nw_info_struct *target); |
| int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target); |
| int ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns); |
| int ncp_get_volume_root(struct ncp_server *server, const char *volname, |
| __u32 *volume, __le32 *dirent, __le32 *dosdirent); |
| int ncp_lookup_volume(struct ncp_server *, const char *, struct nw_info_struct *); |
| int ncp_modify_file_or_subdir_dos_info(struct ncp_server *, struct inode *, |
| __le32, const struct nw_modify_dos_info *info); |
| int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *, struct inode *, |
| const char* path, __le32, const struct nw_modify_dos_info *info); |
| int ncp_modify_nfs_info(struct ncp_server *, __u8 volnum, __le32 dirent, |
| __u32 mode, __u32 rdev); |
| |
| int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*); |
| int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, const char *); |
| int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, const char *, |
| int, __le32, __le16, struct ncp_entry_info *); |
| |
| int ncp_initialize_search(struct ncp_server *, struct inode *, |
| struct nw_search_sequence *target); |
| int ncp_search_for_fileset(struct ncp_server *server, |
| struct nw_search_sequence *seq, |
| int* more, int* cnt, |
| char* buffer, size_t bufsize, |
| char** rbuf, size_t* rsize); |
| |
| int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, |
| struct inode *, const char *, struct inode *, const 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 */ |
| |
| int |
| ncp_mount_subdir(struct ncp_server *, __u8, __u8, __le32, |
| __u32* volume, __le32* dirent, __le32* dosdirent); |
| int ncp_dirhandle_alloc(struct ncp_server *, __u8 vol, __le32 dirent, __u8 *dirhandle); |
| int ncp_dirhandle_free(struct ncp_server *, __u8 dirhandle); |
| |
| int ncp_create_new(struct inode *dir, struct dentry *dentry, |
| umode_t mode, dev_t rdev, __le32 attributes); |
| |
| static inline int ncp_is_nfs_extras(struct ncp_server* server, unsigned int volnum) { |
| #ifdef CONFIG_NCPFS_NFS_NS |
| return (server->m.flags & NCP_MOUNT_NFS_EXTRAS) && |
| (server->name_space[volnum] == NW_NS_NFS); |
| #else |
| return 0; |
| #endif |
| } |
| |
| #ifdef CONFIG_NCPFS_NLS |
| |
| 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(sb) (NCP_SBP(sb)->nls_io) |
| #define ncp_tolower(t, c) nls_tolower(t, c) |
| #define ncp_toupper(t, c) nls_toupper(t, c) |
| #define ncp_strnicmp(t, s1, s2, len) \ |
| nls_strnicmp(t, s1, s2, len) |
| #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(sb) 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) |
| |
| |
| static inline int ncp_strnicmp(const struct nls_table *t, |
| const unsigned char *s1, const unsigned char *s2, int len) |
| { |
| while (len--) { |
| if (tolower(*s1++) != tolower(*s2++)) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_NCPFS_NLS */ |
| |
| #define NCP_GET_AGE(dentry) (jiffies - (dentry)->d_time) |
| #define NCP_MAX_AGE(server) atomic_read(&(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 - NCP_MAX_AGE(server); |
| } |
| |
| 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 dentry *dentry; |
| |
| spin_lock(&parent->d_lock); |
| list_for_each_entry(dentry, &parent->d_subdirs, d_child) { |
| if (dentry->d_fsdata == NULL) |
| ncp_age_dentry(server, dentry); |
| else |
| ncp_new_dentry(dentry); |
| } |
| spin_unlock(&parent->d_lock); |
| } |
| |
| static inline void |
| ncp_invalidate_dircache_entries(struct dentry *parent) |
| { |
| struct ncp_server *server = NCP_SERVER(parent->d_inode); |
| struct dentry *dentry; |
| |
| spin_lock(&parent->d_lock); |
| list_for_each_entry(dentry, &parent->d_subdirs, d_child) { |
| dentry->d_fsdata = NULL; |
| ncp_age_dentry(server, dentry); |
| } |
| spin_unlock(&parent->d_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 */ |