ce8273a573
Converting from ->ioctl to ->unlocked_ioctl with explicit lock_kernel lets us kill the ioctl operation. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [fixed inode reference in smb_ioctl] Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
|
|
* 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/smp_lock.h>
|
|
#include <linux/net.h>
|
|
|
|
#include <linux/smb_fs.h>
|
|
#include <linux/smb_mount.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
#include "proto.h"
|
|
|
|
long
|
|
smb_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(filp->f_path.dentry->d_inode);
|
|
struct smb_conn_opt opt;
|
|
int result = -EINVAL;
|
|
|
|
lock_kernel();
|
|
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;
|
|
}
|
|
unlock_kernel();
|
|
|
|
return result;
|
|
}
|