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author | Christoph Hellwig <hch@lst.de> | 2007-10-21 16:42:16 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-22 08:13:21 -0700 |
commit | cfaea787c05822acbb4d8963baee5edd1cc0258f (patch) | |
tree | 471ab4a45baa9c2dd6423c345a1668366b6846fc /fs/exportfs | |
parent | 644f9ab3b0aa386820ce709de747d46b4cece16f (diff) | |
download | kernel_samsung_aries-cfaea787c05822acbb4d8963baee5edd1cc0258f.zip kernel_samsung_aries-cfaea787c05822acbb4d8963baee5edd1cc0258f.tar.gz kernel_samsung_aries-cfaea787c05822acbb4d8963baee5edd1cc0258f.tar.bz2 |
exportfs: remove old methods
Now that all filesystems are converted remove support for the old methods.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exportfs')
-rw-r--r-- | fs/exportfs/expfs.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 99294a2..e68f027 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -13,19 +13,6 @@ static int get_name(struct dentry *dentry, char *name, struct dentry *child); -static struct dentry *exportfs_get_dentry(struct super_block *sb, void *obj) -{ - struct dentry *result = ERR_PTR(-ESTALE); - - if (sb->s_export_op->get_dentry) { - result = sb->s_export_op->get_dentry(sb, obj); - if (!result) - result = ERR_PTR(-ESTALE); - } - - return result; -} - static int exportfs_get_name(struct dentry *dir, char *name, struct dentry *child) { @@ -214,125 +201,6 @@ reconnect_path(struct super_block *sb, struct dentry *target_dir) return 0; } -/** - * find_exported_dentry - helper routine to implement export_operations->decode_fh - * @sb: The &super_block identifying the filesystem - * @obj: An opaque identifier of the object to be found - passed to - * get_inode - * @parent: An optional opqaue identifier of the parent of the object. - * @acceptable: A function used to test possible &dentries to see if they are - * acceptable - * @context: A parameter to @acceptable so that it knows on what basis to - * judge. - * - * find_exported_dentry is the central helper routine to enable file systems - * to provide the decode_fh() export_operation. It's main task is to take - * an &inode, find or create an appropriate &dentry structure, and possibly - * splice this into the dcache in the correct place. - * - * The decode_fh() operation provided by the filesystem should call - * find_exported_dentry() with the same parameters that it received except - * that instead of the file handle fragment, pointers to opaque identifiers - * for the object and optionally its parent are passed. The default decode_fh - * routine passes one pointer to the start of the filehandle fragment, and - * one 8 bytes into the fragment. It is expected that most filesystems will - * take this approach, though the offset to the parent identifier may well be - * different. - * - * find_exported_dentry() will call get_dentry to get an dentry pointer from - * the file system. If any &dentry in the d_alias list is acceptable, it will - * be returned. Otherwise find_exported_dentry() will attempt to splice a new - * &dentry into the dcache using get_name() and get_parent() to find the - * appropriate place. - */ - -struct dentry * -find_exported_dentry(struct super_block *sb, void *obj, void *parent, - int (*acceptable)(void *context, struct dentry *de), - void *context) -{ - struct dentry *result, *alias; - int err = -ESTALE; - - /* - * Attempt to find the inode. - */ - result = exportfs_get_dentry(sb, obj); - if (IS_ERR(result)) - return result; - - if (S_ISDIR(result->d_inode->i_mode)) { - if (!(result->d_flags & DCACHE_DISCONNECTED)) { - if (acceptable(context, result)) - return result; - err = -EACCES; - goto err_result; - } - - err = reconnect_path(sb, result); - if (err) - goto err_result; - } else { - struct dentry *target_dir, *nresult; - char nbuf[NAME_MAX+1]; - - alias = find_acceptable_alias(result, acceptable, context); - if (alias) - return alias; - - if (parent == NULL) - goto err_result; - - target_dir = exportfs_get_dentry(sb,parent); - if (IS_ERR(target_dir)) { - err = PTR_ERR(target_dir); - goto err_result; - } - - err = reconnect_path(sb, target_dir); - if (err) { - dput(target_dir); - goto err_result; - } - - /* - * As we weren't after a directory, have one more step to go. - */ - err = exportfs_get_name(target_dir, nbuf, result); - if (!err) { - mutex_lock(&target_dir->d_inode->i_mutex); - nresult = lookup_one_len(nbuf, target_dir, - strlen(nbuf)); - mutex_unlock(&target_dir->d_inode->i_mutex); - if (!IS_ERR(nresult)) { - if (nresult->d_inode) { - dput(result); - result = nresult; - } else - dput(nresult); - } - } - dput(target_dir); - } - - alias = find_acceptable_alias(result, acceptable, context); - if (alias) - return alias; - - /* drat - I just cannot find anything acceptable */ - dput(result); - /* It might be justifiable to return ESTALE here, - * but the filehandle at-least looks reasonable good - * and it may just be a permission problem, so returning - * -EACCESS is safer - */ - return ERR_PTR(-EACCES); - - err_result: - dput(result); - return ERR_PTR(err); -} - struct getdents_callback { char *name; /* name that was found. It already points to a buffer NAME_MAX+1 is size */ @@ -462,38 +330,6 @@ static int export_encode_fh(struct dentry *dentry, struct fid *fid, return type; } - -/** - * export_decode_fh - default export_operations->decode_fh function - * @sb: The superblock - * @fh: pointer to the file handle fragment - * @fh_len: length of file handle fragment - * @acceptable: function for testing acceptability of dentrys - * @context: context for @acceptable - * - * This is the default decode_fh() function. - * a fileid_type of 1 indicates that the filehandlefragment - * just contains an object identifier understood by get_dentry. - * a fileid_type of 2 says that there is also a directory - * identifier 8 bytes in to the filehandlefragement. - */ -static struct dentry *export_decode_fh(struct super_block *sb, __u32 *fh, int fh_len, - int fileid_type, - int (*acceptable)(void *context, struct dentry *de), - void *context) -{ - __u32 parent[2]; - parent[0] = parent[1] = 0; - if (fh_len < 2 || fileid_type > 2) - return NULL; - if (fileid_type == 2) { - if (fh_len > 2) parent[0] = fh[2]; - if (fh_len > 3) parent[1] = fh[3]; - } - return find_exported_dentry(sb, fh, parent, - acceptable, context); -} - int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len, int connectable) { @@ -518,19 +354,6 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid, int err; /* - * Old way of doing things. Will go away soon. - */ - if (!nop->fh_to_dentry) { - if (nop->decode_fh) { - return nop->decode_fh(mnt->mnt_sb, fid->raw, fh_len, - fileid_type, acceptable, context); - } else { - return export_decode_fh(mnt->mnt_sb, fid->raw, fh_len, - fileid_type, acceptable, context); - } - } - - /* * Try to get any dentry for the given file handle from the filesystem. */ result = nop->fh_to_dentry(mnt->mnt_sb, fid, fh_len, fileid_type); @@ -652,6 +475,4 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid, } EXPORT_SYMBOL_GPL(exportfs_decode_fh); -EXPORT_SYMBOL(find_exported_dentry); - MODULE_LICENSE("GPL"); |