smb_fs.h
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- /*
- * 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 <linux/smb.h>
- #include <linux/smb_fs_i.h>
- #include <linux/smb_fs_sb.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 <linux/fs.h>
- #include <linux/pagemap.h>
- #include <linux/vmalloc.h>
- #include <linux/smb_mount.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)
- (le16_to_cpu(get_unaligned((u16 *)((u8 *)(buf) + (pos)))))
- #define DVAL(buf,pos)
- (le32_to_cpu(get_unaligned((u32 *)((u8 *)(buf) + (pos)))))
- #define LVAL(buf,pos)
- (le64_to_cpu(get_unaligned((u64 *)((u8 *)(buf) + (pos)))))
- #define WSET(buf,pos,val)
- put_unaligned(cpu_to_le16((u16)(val)), (u16 *)((u8 *)(buf) + (pos)))
- #define DSET(buf,pos,val)
- put_unaligned(cpu_to_le32((u32)(val)), (u32 *)((u8 *)(buf) + (pos)))
- #define LSET(buf,pos,val)
- put_unaligned(cpu_to_le64((u64)(val)), (u64 *)((u8 *)(buf) + (pos)))
- /* where to find the base of the SMB packet proper */
- #define smb_base(buf) ((u8 *)(((u8 *)(buf))+4))
- #ifdef DEBUG_SMB_MALLOC
- #include <linux/slab.h>
- extern int smb_malloced;
- extern int smb_current_vmalloced;
- extern int smb_current_kmalloced;
- static inline void *
- smb_vmalloc(unsigned int size)
- {
- smb_malloced += 1;
- smb_current_vmalloced += 1;
- return vmalloc(size);
- }
- static inline void
- smb_vfree(void *obj)
- {
- smb_current_vmalloced -= 1;
- vfree(obj);
- }
- static inline void *
- smb_kmalloc(size_t size, int flags)
- {
- smb_malloced += 1;
- smb_current_kmalloced += 1;
- return kmalloc(size, flags);
- }
- static inline void
- smb_kfree(void *obj)
- {
- smb_current_kmalloced -= 1;
- kfree(obj);
- }
- #else /* DEBUG_SMB_MALLOC */
- #define smb_kmalloc(s,p) kmalloc(s,p)
- #define smb_kfree(o) kfree(o)
- #define smb_vmalloc(s) vmalloc(s)
- #define smb_vfree(o) vfree(o)
- #endif /* DEBUG_SMB_MALLOC */
- /*
- * 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 */