| /* |
| * smb_fs.h |
| * |
| * Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke |
| * Copyright (C) 1997 by Volker Lendecke |
| * |
| */ |
| |
| #ifndef _LINUX_SMB_FS_H |
| #define _LINUX_SMB_FS_H |
| |
| #include "smb.h" |
| |
| /* |
| * ioctl commands |
| */ |
| #define SMB_IOC_GETMOUNTUID _IOR('u', 1, __kernel_old_uid_t) |
| #define SMB_IOC_NEWCONN _IOW('u', 2, struct smb_conn_opt) |
| |
| /* __kernel_uid_t can never change, so we have to use __kernel_uid32_t */ |
| #define SMB_IOC_GETMOUNTUID32 _IOR('u', 3, __kernel_uid32_t) |
| |
| |
| #ifdef __KERNEL__ |
| #include "smb_fs_i.h" |
| #include "smb_fs_sb.h" |
| #include "smb_mount.h" |
| |
| #include <linux/fs.h> |
| #include <linux/pagemap.h> |
| #include <linux/vmalloc.h> |
| #include <linux/jiffies.h> |
| #include <asm/unaligned.h> |
| |
| static inline struct smb_sb_info *SMB_SB(struct super_block *sb) |
| { |
| return sb->s_fs_info; |
| } |
| |
| static inline struct smb_inode_info *SMB_I(struct inode *inode) |
| { |
| return container_of(inode, struct smb_inode_info, vfs_inode); |
| } |
| |
| /* macro names are short for word, double-word, long value (?) */ |
| #define WVAL(buf, pos) (get_unaligned_le16((u8 *)(buf) + (pos))) |
| #define DVAL(buf, pos) (get_unaligned_le32((u8 *)(buf) + (pos))) |
| #define LVAL(buf, pos) (get_unaligned_le64((u8 *)(buf) + (pos))) |
| |
| #define WSET(buf, pos, val) put_unaligned_le16((val), (u8 *)(buf) + (pos)) |
| #define DSET(buf, pos, val) put_unaligned_le32((val), (u8 *)(buf) + (pos)) |
| #define LSET(buf, pos, val) put_unaligned_le64((val), (u8 *)(buf) + (pos)) |
| |
| /* where to find the base of the SMB packet proper */ |
| #define smb_base(buf) ((u8 *)(((u8 *)(buf))+4)) |
| |
| /* |
| * Flags for the in-memory inode |
| */ |
| #define SMB_F_LOCALWRITE 0x02 /* file modified locally */ |
| |
| |
| /* NT1 protocol capability bits */ |
| #define SMB_CAP_RAW_MODE 0x00000001 |
| #define SMB_CAP_MPX_MODE 0x00000002 |
| #define SMB_CAP_UNICODE 0x00000004 |
| #define SMB_CAP_LARGE_FILES 0x00000008 |
| #define SMB_CAP_NT_SMBS 0x00000010 |
| #define SMB_CAP_RPC_REMOTE_APIS 0x00000020 |
| #define SMB_CAP_STATUS32 0x00000040 |
| #define SMB_CAP_LEVEL_II_OPLOCKS 0x00000080 |
| #define SMB_CAP_LOCK_AND_READ 0x00000100 |
| #define SMB_CAP_NT_FIND 0x00000200 |
| #define SMB_CAP_DFS 0x00001000 |
| #define SMB_CAP_LARGE_READX 0x00004000 |
| #define SMB_CAP_LARGE_WRITEX 0x00008000 |
| #define SMB_CAP_UNIX 0x00800000 /* unofficial ... */ |
| |
| |
| /* |
| * This is the time we allow an inode, dentry or dir cache to live. It is bad |
| * for performance to have shorter ttl on an inode than on the cache. It can |
| * cause refresh on each inode for a dir listing ... one-by-one |
| */ |
| #define SMB_MAX_AGE(server) (((server)->mnt->ttl * HZ) / 1000) |
| |
| static inline void |
| smb_age_dentry(struct smb_sb_info *server, struct dentry *dentry) |
| { |
| dentry->d_time = jiffies - SMB_MAX_AGE(server); |
| } |
| |
| struct smb_cache_head { |
| time_t mtime; /* unused */ |
| unsigned long time; /* cache age */ |
| unsigned long end; /* last valid fpos in cache */ |
| int eof; |
| }; |
| |
| #define SMB_DIRCACHE_SIZE ((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *))) |
| union smb_dir_cache { |
| struct smb_cache_head head; |
| struct dentry *dentry[SMB_DIRCACHE_SIZE]; |
| }; |
| |
| #define SMB_FIRSTCACHE_SIZE ((int)((SMB_DIRCACHE_SIZE * \ |
| sizeof(struct dentry *) - sizeof(struct smb_cache_head)) / \ |
| sizeof(struct dentry *))) |
| |
| #define SMB_DIRCACHE_START (SMB_DIRCACHE_SIZE - SMB_FIRSTCACHE_SIZE) |
| |
| struct smb_cache_control { |
| struct smb_cache_head head; |
| struct page *page; |
| union smb_dir_cache *cache; |
| unsigned long fpos, ofs; |
| int filled, valid, idx; |
| }; |
| |
| #define SMB_OPS_NUM_STATIC 5 |
| struct smb_ops { |
| int (*read)(struct inode *inode, loff_t offset, int count, |
| char *data); |
| int (*write)(struct inode *inode, loff_t offset, int count, const |
| char *data); |
| int (*readdir)(struct file *filp, void *dirent, filldir_t filldir, |
| struct smb_cache_control *ctl); |
| |
| int (*getattr)(struct smb_sb_info *server, struct dentry *dir, |
| struct smb_fattr *fattr); |
| /* int (*setattr)(...); */ /* setattr is really icky! */ |
| |
| int (*truncate)(struct inode *inode, loff_t length); |
| |
| |
| /* --- --- --- end of "static" entries --- --- --- */ |
| |
| int (*convert)(unsigned char *output, int olen, |
| const unsigned char *input, int ilen, |
| struct nls_table *nls_from, |
| struct nls_table *nls_to); |
| }; |
| |
| static inline int |
| smb_is_open(struct inode *i) |
| { |
| return (SMB_I(i)->open == server_from_inode(i)->generation); |
| } |
| |
| extern void smb_install_null_ops(struct smb_ops *); |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_SMB_FS_H */ |