smbfs: move to drivers/staging

smbfs has been scheduled for removal in 2.6.27, so
maybe we can now move it to drivers/staging on the
way out.

smbfs still uses the big kernel lock and nobody
is going to fix that, so we should be getting
rid of it soon.

This removes the 32 bit compat mount and ioctl
handling code, which is implemented in common fs
code, and moves all smbfs related files into
drivers/staging/smbfs.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 153 insertions, 0 deletions

diff --git a/drivers/staging/smbfs/smb_fs.h b/drivers/staging/smbfs/smb_fs.h
new file mode 100644
index 0000000..20a05c1
--- /dev/null
+++ b/drivers/staging/smbfs/smb_fs.h
@@ -0,0 +1,153 @@
+/*
+ *  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 */