root/fs/smbfs/ioctl.c

DEFINITIONS

1. smb_ioctl

/*
 *  ioctl.c
 *
 *  Copyright (C) 1995, 1996 by Volker Lendecke
 *  Copyright (C) 1997 by Volker Lendecke
 *
 *  Please add a note about your changes to smbfs in the ChangeLog file.
 */

#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/highuid.h>
#include <linux/net.h>

#include <linux/smb_fs.h>
#include <linux/smb_mount.h>

#include <asm/uaccess.h>

#include "proto.h"

int
smb_ioctl(struct inode *inode, struct file *filp,
          unsigned int cmd, unsigned long arg)
{
        struct smb_sb_info *server = server_from_inode(inode);
        struct smb_conn_opt opt;
        int result = -EINVAL;

        switch (cmd) {
                uid16_t uid16;
                uid_t uid32;
        case SMB_IOC_GETMOUNTUID:
                SET_UID(uid16, server->mnt->mounted_uid);
                result = put_user(uid16, (uid16_t __user *) arg);
                break;
        case SMB_IOC_GETMOUNTUID32:
                SET_UID(uid32, server->mnt->mounted_uid);
                result = put_user(uid32, (uid_t __user *) arg);
                break;

        case SMB_IOC_NEWCONN:
                /* arg is smb_conn_opt, or NULL if no connection was made */
                if (!arg) {
                        result = 0;
                        smb_lock_server(server);
                        server->state = CONN_RETRIED;
                        printk(KERN_ERR "Connection attempt failed!  [%d]\n",
                               server->conn_error);
                        smbiod_flush(server);
                        smb_unlock_server(server);
                        break;
                }

                result = -EFAULT;
                if (!copy_from_user(&opt, (void __user *)arg, sizeof(opt)))
                        result = smb_newconn(server, &opt);
                break;
        default:
                break;
        }

        return result;
}