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/*

 *  symlink.c

 *

 *  Copyright (C) 2002 by John Newbigin

 *

 *  Please add a note about your changes to smbfs in the ChangeLog file.

 */

#include <linux/sched.h>

#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/fcntl.h>

#include <linux/stat.h>

#include <linux/mm.h>

#include <linux/slab.h>

#include <linux/pagemap.h>

#include <linux/smp_lock.h>

#include <linux/net.h>

#include <asm/uaccess.h>

#include <asm/system.h>

#include <linux/smbno.h>

#include <linux/smb_fs.h>

#include "smb_debug.h"

#include "proto.h"

int smb_read_link(struct dentry *dentry, char *buffer, int len)

{

        char *link;

        int result;

        DEBUG1("read link buffer len = %d\n", len);

        result = -ENOMEM;

        link = kmalloc(SMB_MAXNAMELEN + 1, GFP_KERNEL);

        if (!link)

                goto out;

        result = smb_proc_read_link(server_from_dentry(dentry), dentry, link,

                                    SMB_MAXNAMELEN);

        if (result < 0)

                goto out_free;

        result = vfs_readlink(dentry, buffer, len, link);

out_free:

        kfree(link);

out:

        return result;

}

int smb_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)

{

        DEBUG1("create symlink %s -> %s/%s\n", oldname, DENTRY_PATH(dentry));

        smb_invalid_dir_cache(dir);

        return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname);

}

int smb_follow_link(struct dentry *dentry, struct nameidata *nd)

{

        char *link;

        int result;

        DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry));

        result = -ENOMEM;

        link = kmalloc(SMB_MAXNAMELEN + 1, GFP_KERNEL);

        if (!link)

                goto out;

        result = smb_proc_read_link(server_from_dentry(dentry), dentry, link,

                                    SMB_MAXNAMELEN);

        if (result < 0 || result >= SMB_MAXNAMELEN)

                goto out_free;

        link[result] = 0;

        result = vfs_follow_link(nd, link);

out_free:

        kfree(link);

out:

        return result;

}

struct inode_operations smb_link_inode_operations =

{

        .readlink       = smb_read_link,

        .follow_link    = smb_follow_link,

};