linux-imx

/*

 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.

 *

 * This software may be freely redistributed under the terms of the

 * GNU General Public License.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 * Authors: David Woodhouse <dwmw2@infradead.org>

 *          David Howells <dhowells@redhat.com>

 *

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/fs.h>

#include <linux/pagemap.h>

#include <linux/sched.h>

#include <linux/mount.h>

#include <linux/namei.h>

#include <linux/iversion.h>

#include "internal.h"

​

static const struct inode_operations afs_symlink_inode_operations = {

    .get_link   = page_get_link,

    .listxattr  = afs_listxattr,

};

​

/*

 * Initialise an inode from the vnode status.

 */

static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key)

{

    struct inode *inode = AFS_VNODE_TO_I(vnode);

​

    _debug("FS: ft=%d lk=%d sz=%llu ver=%Lu mod=%hu",

           vnode->status.type,

           vnode->status.nlink,

           (unsigned long long) vnode->status.size,

           vnode->status.data_version,

           vnode->status.mode);

​

    read_seqlock_excl(&vnode->cb_lock);

​

    afs_update_inode_from_status(vnode, &vnode->status, NULL,

                     AFS_VNODE_NOT_YET_SET);

​

    switch (vnode->status.type) {

    case AFS_FTYPE_FILE:

        inode->i_mode   = S_IFREG | vnode->status.mode;

        inode->i_op = &afs_file_inode_operations;

        inode->i_fop    = &afs_file_operations;

        inode->i_mapping->a_ops = &afs_fs_aops;

        break;

    case AFS_FTYPE_DIR:

        inode->i_mode   = S_IFDIR | vnode->status.mode;

        inode->i_op = &afs_dir_inode_operations;

        inode->i_fop    = &afs_dir_file_operations;

        inode->i_mapping->a_ops = &afs_dir_aops;

        break;

    case AFS_FTYPE_SYMLINK:

        /* Symlinks with a mode of 0644 are actually mountpoints. */

        if ((vnode->status.mode & 0777) == 0644) {

            inode->i_flags |= S_AUTOMOUNT;

​

            set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags);

​

            inode->i_mode   = S_IFDIR | 0555;

            inode->i_op = &afs_mntpt_inode_operations;

            inode->i_fop    = &afs_mntpt_file_operations;

            inode->i_mapping->a_ops = &afs_fs_aops;

        } else {

            inode->i_mode   = S_IFLNK | vnode->status.mode;

            inode->i_op = &afs_symlink_inode_operations;

            inode->i_mapping->a_ops = &afs_fs_aops;

        }

        inode_nohighmem(inode);

        break;

    default:

        printk("kAFS: AFS vnode with undefined type\n");

        read_sequnlock_excl(&vnode->cb_lock);

        return afs_protocol_error(NULL, -EBADMSG, afs_eproto_file_type);

    }

​

    inode->i_blocks     = 0;

    vnode->invalid_before   = vnode->status.data_version;

​

    read_sequnlock_excl(&vnode->cb_lock);

    return 0;