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
  25 int
  26 smb_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         case SMB_IOC_GETMOUNTUID:
  35                 result = put_user(NEW_TO_OLD_UID(server->mnt->mounted_uid),
  36                                   (uid16_t *) arg);
  37                 break;
  38         case SMB_IOC_GETMOUNTUID32:
  39                 result = put_user(server->mnt->mounted_uid, (uid_t *) arg);
  40                 break;
  41
  42         case SMB_IOC_NEWCONN:
  43                 /* arg is smb_conn_opt, or NULL if no connection was made */
  44                 if (!arg) {
  45                         result = 0;
  46                         smb_lock_server(server);
  47                         server->state = CONN_RETRIED;
  48                         printk(KERN_ERR "Connection attempt failed!  [%d]\n",
  49                                server->conn_error);
  50                         smbiod_flush(server);
  51                         smb_unlock_server(server);
  52                         break;
  53                 }
  54
  55                 result = -EFAULT;
  56                 if (!copy_from_user(&opt, (void *)arg, sizeof(opt)))
  57                         result = smb_newconn(server, &opt);
  58                 break;
  59         default:
  60                 break;
  61         }
  62
  63         return result;
  64 }