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
  17 #include <linux/smb_fs.h>
  18 #include <linux/smb_mount.h>
  19
  20 #include <asm/uaccess.h>
  21
  22 #include "proto.h"
  23
  24 int
  25 smb_ioctl(struct inode *inode, struct file *filp,
  26           unsigned int cmd, unsigned long arg)
  27 {
  28         struct smb_sb_info *server = server_from_inode(inode);
  29         struct smb_conn_opt opt;
  30         int result = -EINVAL;
  31
  32         switch (cmd) {
  33         case SMB_IOC_GETMOUNTUID:
  34                 result = put_user(NEW_TO_OLD_UID(server->mnt->mounted_uid),
  35                                   (uid16_t *) arg);
  36                 break;
  37         case SMB_IOC_GETMOUNTUID32:
  38                 result = put_user(server->mnt->mounted_uid, (uid_t *) arg);
  39                 break;
  40
  41         case SMB_IOC_NEWCONN:
  42                 /* arg is smb_conn_opt, or NULL if no connection was made */
  43                 if (!arg) {
  44                         result = 0;
  45                         smb_lock_server(server);
  46                         server->state = CONN_RETRIED;
  47                         printk(KERN_ERR "Connection attempt failed!  [%d]\n",
  48                                server->conn_error);
  49                         smbiod_flush(server);
  50                         smb_unlock_server(server);
  51                         break;
  52                 }
  53
  54                 result = -EFAULT;
  55                 if (!copy_from_user(&opt, (void *)arg, sizeof(opt)))
  56                         result = smb_newconn(server, &opt);
  57                 break;
  58         default:
  59                 break;
  60         }
  61
  62         return result;
  63 }