diff options
Diffstat (limited to 'include/linux/smb_fs.h')
| -rw-r--r-- | include/linux/smb_fs.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/include/linux/smb_fs.h b/include/linux/smb_fs.h new file mode 100644 index 000000000000..c4153120ade6 --- /dev/null +++ b/include/linux/smb_fs.h @@ -0,0 +1,204 @@ +/* + * 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 */ |