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>
- /*
- * 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/pagemap.h>
- #include <linux/vmalloc.h>
- #include <linux/smb_mount.h>
- #include <asm/unaligned.h>
- /* 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 0x0001
- #define SMB_CAP_MPX_MODE 0x0002
- #define SMB_CAP_UNICODE 0x0004
- #define SMB_CAP_LARGE_FILES 0x0008
- #define SMB_CAP_NT_SMBS 0x0010
- #define SMB_CAP_RPC_REMOTE_APIS 0x0020
- #define SMB_CAP_STATUS32 0x0040
- #define SMB_CAP_LEVEL_II_OPLOCKS 0x0080
- #define SMB_CAP_LOCK_AND_READ 0x0100
- #define SMB_CAP_NT_FIND 0x0200
- #define SMB_CAP_DFS 0x1000
- #define SMB_CAP_LARGE_READX 0x4000
- /*
- * 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;
- };
- static inline int
- smb_is_open(struct inode *i)
- {
- return (i->u.smbfs_i.open == server_from_inode(i)->generation);
- }
- #endif /* __KERNEL__ */
- #endif /* _LINUX_SMB_FS_H */