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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/ncpfs/ncplib_kernel.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/ncpfs/ncplib_kernel.h')
-rw-r--r-- | fs/ncpfs/ncplib_kernel.h | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h new file mode 100644 index 000000000000..05ec2e9d90c6 --- /dev/null +++ b/fs/ncpfs/ncplib_kernel.h @@ -0,0 +1,259 @@ +/* + * 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/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 */ + +#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* 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(void* src, struct nw_info_struct* target); +int ncp_obtain_info(struct ncp_server *server, struct inode *, char *, + struct nw_info_struct *target); +int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target); +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 *, char *); +int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, 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_file_or_subdir(struct ncp_server *server, + struct nw_search_sequence *seq, + struct nw_info_struct *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 *, 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 */ + +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, + int 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(dentry) (NCP_SERVER((dentry)->d_inode)->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(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) + + +static inline int ncp_strnicmp(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) ((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 */ |