LXR linux/fs/smbfs/ioctl.c

   1/*
   2 *  ioctl.c
   3 *
   4 *  Copyright (C) 1995, 1996 by Volker Lendecke
   5 *  Copyright (C) 1997 by Volker Lendecke
   6 *
   7 *  Please add a note about your changes to smbfs in the ChangeLog file.
   8 */
   9
  10#include <linux/errno.h>
  11#include <linux/fs.h>
  12#include <linux/ioctl.h>
  13#include <linux/time.h>
  14#include <linux/mm.h>
  15#include <linux/highuid.h>
  16#include <linux/net.h>
  17
  18#include <linux/smb_fs.h>
  19#include <linux/smb_mount.h>
  20
  21#include <asm/uaccess.h>
  22
  23#include "proto.h"
  24
  25int
  26smb_ioctl(struct inode *inode, struct file *filp,
  27          unsigned int cmd, unsigned long arg)
  28{
  29        struct smb_sb_info *server = server_from_inode(inode);
  30        struct smb_conn_opt opt;
  31        int result = -EINVAL;
  32
  33        switch (cmd) {
  34                uid16_t uid16;
  35                uid_t uid32;
  36        case SMB_IOC_GETMOUNTUID:
  37                SET_UID(uid16, server->mnt->mounted_uid);
  38                result = put_user(uid16, (uid16_t __user *) arg);
  39                break;
  40        case SMB_IOC_GETMOUNTUID32:
  41                SET_UID(uid32, server->mnt->mounted_uid);
  42                result = put_user(uid32, (uid_t __user *) arg);
  43                break;
  44
  45        case SMB_IOC_NEWCONN:
  46                /* arg is smb_conn_opt, or NULL if no connection was made */
  47                if (!arg) {
  48                        result = 0;
  49                        smb_lock_server(server);
  50                        server->state = CONN_RETRIED;
  51                        printk(KERN_ERR "Connection attempt failed!  [%d]\n",
  52                               server->conn_error);
  53                        smbiod_flush(server);
  54                        smb_unlock_server(server);
  55                        break;
  56                }
  57
  58                result = -EFAULT;
  59                if (!copy_from_user(&opt, (void __user *)arg, sizeof(opt)))
  60                        result = smb_newconn(server, &opt);
  61                break;
  62        default:
  63                break;
  64        }
  65
  66        return result;
  67}
  68