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    Subject[PATCH 13/35] lookup_one_len_nd - lookup_one_len with nameidata argument
    Date
    From: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu>

    This patch renames lookup_one_len to lookup_one_len_nd, and adds a nameidata
    argument. An inline function, lookup_one_len (which calls lookup_one_len_nd
    with nd == NULL) preserves original behavior.

    The following Unionfs patches depend on this one.

    Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu>
    ---
    fs/namei.c | 8 ++++----
    include/linux/namei.h | 10 +++++++++-
    2 files changed, 13 insertions(+), 5 deletions(-)

    diff --git a/fs/namei.c b/fs/namei.c
    index 8a7b923..76de391 100644
    --- a/fs/namei.c
    +++ b/fs/namei.c
    @@ -1290,8 +1290,8 @@ static struct dentry *lookup_hash(struct
    return __lookup_hash(&nd->last, nd->dentry, nd);
    }

    -/* SMP-safe */
    -struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
    +struct dentry * lookup_one_len_nd(const char *name, struct dentry * base,
    + int len, struct nameidata *nd)
    {
    unsigned long hash;
    struct qstr this;
    @@ -1311,7 +1311,7 @@ struct dentry * lookup_one_len(const cha
    }
    this.hash = end_name_hash(hash);

    - return __lookup_hash(&this, base, NULL);
    + return __lookup_hash(&this, base, nd);
    access:
    return ERR_PTR(-EACCES);
    }
    @@ -2756,7 +2756,7 @@ EXPORT_SYMBOL(follow_up);
    EXPORT_SYMBOL(get_write_access); /* binfmt_aout */
    EXPORT_SYMBOL(getname);
    EXPORT_SYMBOL(lock_rename);
    -EXPORT_SYMBOL(lookup_one_len);
    +EXPORT_SYMBOL(lookup_one_len_nd);
    EXPORT_SYMBOL(page_follow_link_light);
    EXPORT_SYMBOL(page_put_link);
    EXPORT_SYMBOL(page_readlink);
    diff --git a/include/linux/namei.h b/include/linux/namei.h
    index d39a5a6..8551806 100644
    --- a/include/linux/namei.h
    +++ b/include/linux/namei.h
    @@ -81,7 +81,15 @@ extern struct file *lookup_instantiate_f
    extern struct file *nameidata_to_filp(struct nameidata *nd, int flags);
    extern void release_open_intent(struct nameidata *);

    -extern struct dentry * lookup_one_len(const char *, struct dentry *, int);
    +extern struct dentry * lookup_one_len_nd(const char *,
    + struct dentry *, int, struct nameidata *);
    +
    +/* SMP-safe */
    +static inline struct dentry *lookup_one_len(const char *name,
    + struct dentry *dir, int len)
    +{
    + return lookup_one_len_nd(name, dir, len, NULL);
    +}

    extern int follow_down(struct vfsmount **, struct dentry **);
    extern int follow_up(struct vfsmount **, struct dentry **);
    --
    1.4.3.3
    -
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