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knfsd: exportfs: add procedural interface for NFSD

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Currently NFSD calls directly into filesystems through the export_operations
structure.  I plan to change this interface in various ways in later patches,
and want to avoid the export of the default operations to NFSD, so this patch
adds two simple exportfs_encode_fh/exportfs_decode_fh helpers for NFSD to call
instead of poking into exportfs guts.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2007-07-17 04:04:30 -07:00 • committed by Linus Torvalds
parent 5ca2960733
commit d37065cd6d
3 changed files with 33 additions and 14 deletions
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7
include/linux/exportfs.h
View file

@ -5,6 +5,7 @@
struct dentry;
struct super_block;
struct vfsmount;
/**
@ -116,4 +117,10 @@ extern struct dentry *find_exported_dentry(struct super_block *sb, void *obj,
void *parent, int (*acceptable)(void *context, struct dentry *de),
void *context);
extern int exportfs_encode_fh(struct dentry *dentry, __u32 *fh, int *max_len,
int connectable);
extern struct dentry *exportfs_decode_fh(struct vfsmount *mnt, __u32 *fh,
int fh_len, int fileid_type, int (*acceptable)(void *, struct dentry *),
void *context);
#endif /* LINUX_EXPORTFS_H */