[mirror_ubuntu-artful-kernel.git] / fs / cifs / ioctl.c

/*
 *   fs/cifs/ioctl.c
 *
 *   vfs operations that deal with io control
 *
 *   Copyright (C) International Business Machines  Corp., 2005
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"

#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)

int cifs_ioctl (struct inode * inode, struct file * filep, 
		unsigned int command, unsigned long arg)
{
	int rc = -ENOTTY; /* strange error - but the precedent */
	int xid;
	struct cifs_sb_info *cifs_sb;
#ifdef CONFIG_CIFS_POSIX
	__u64	ExtAttrBits = 0;
	__u64	ExtAttrMask = 0;
	__u64   caps;
	struct cifsTconInfo *tcon;
	struct cifsFileInfo *pSMBFile =
		(struct cifsFileInfo *)filep->private_data;
#endif /* CONFIG_CIFS_POSIX */

	xid = GetXid();

        cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));

	cifs_sb = CIFS_SB(inode->i_sb);

#ifdef CONFIG_CIFS_POSIX
	tcon = cifs_sb->tcon;
	if(tcon)
		caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
	else {
		rc = -EIO;
		FreeXid(xid);
		return -EIO;
	}
#endif /* CONFIG_CIFS_POSIX */

	switch(command) {
		case CIFS_IOC_CHECKUMOUNT:
			cFYI(1,("User unmount attempted"));
			if(cifs_sb->mnt_uid == current->uid)
				rc = 0;
			else {
				rc = -EACCES;
				cFYI(1,("uids do not match"));
			}
			break;
#ifdef CONFIG_CIFS_POSIX
		case EXT2_IOC_GETFLAGS:
			if(CIFS_UNIX_EXTATTR_CAP & caps) {
				if (pSMBFile == NULL)
					break;
				rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
					&ExtAttrBits, &ExtAttrMask);
				if(rc == 0)
					rc = put_user(ExtAttrBits &
						EXT2_FL_USER_VISIBLE,
						(int __user *)arg);
			}
			break;

		case EXT2_IOC_SETFLAGS:
			if(CIFS_UNIX_EXTATTR_CAP & caps) {
				if(get_user(ExtAttrBits,(int __user *)arg)) {
					rc = -EFAULT;
					break;
				}
				if (pSMBFile == NULL)
					break;
				/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
					extAttrBits, &ExtAttrMask);*/
				
			}
			cFYI(1,("set flags not implemented yet"));
			break;
#endif /* CONFIG_CIFS_POSIX */
		default:
			cFYI(1,("unsupported ioctl"));
			break;
	}

	FreeXid(xid);
	return rc;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* fs/cifs/ioctl.c
	3	*
	4	* vfs operations that deal with io control
	5	*
	6	* Copyright (C) International Business Machines Corp., 2005
	7	* Author(s): Steve French (sfrench@us.ibm.com)
	8	*
	9	* This library is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU Lesser General Public License as published
	11	* by the Free Software Foundation; either version 2.1 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	17	* the GNU Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public License
	20	* along with this library; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*/
f654bac2	23
1da177e4 LT	24	#include <linux/fs.h>
	25	#include <linux/ext2_fs.h>
	26	#include "cifspdu.h"
	27	#include "cifsglob.h"
	28	#include "cifsproto.h"
	29	#include "cifs_debug.h"
c67593a0	30	#include "cifsfs.h"
1da177e4	31
f28ac91b SF	32	#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
f28ac91b SF	33
1da177e4 LT	34	int cifs_ioctl (struct inode * inode, struct file * filep,
	35	unsigned int command, unsigned long arg)
	36	{
	37	int rc = -ENOTTY; /* strange error - but the precedent */
c81156dd SF	38	int xid;
c81156dd SF	39	struct cifs_sb_info *cifs_sb;
1da177e4	40	#ifdef CONFIG_CIFS_POSIX
f654bac2 SF	41	__u64 ExtAttrBits = 0;
f654bac2 SF	42	__u64 ExtAttrMask = 0;
f28ac91b	43	__u64 caps;
f654bac2 SF	44	struct cifsTconInfo *tcon;
	45	struct cifsFileInfo *pSMBFile =
	46	(struct cifsFileInfo *)filep->private_data;
c81156dd	47	#endif /* CONFIG_CIFS_POSIX */
f654bac2 SF	48
	49	xid = GetXid();
	50
f28ac91b SF	51	cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
f28ac91b SF	52
f654bac2	53	cifs_sb = CIFS_SB(inode->i_sb);
f654bac2	54
c81156dd SF	55	#ifdef CONFIG_CIFS_POSIX
c81156dd SF	56	tcon = cifs_sb->tcon;
f654bac2 SF	57	if(tcon)
	58	caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
	59	else {
	60	rc = -EIO;
c81156dd SF	61	FreeXid(xid);
c81156dd SF	62	return -EIO;
f654bac2	63	}
c81156dd	64	#endif /* CONFIG_CIFS_POSIX */
f654bac2	65
1da177e4	66	switch(command) {
f28ac91b SF	67	case CIFS_IOC_CHECKUMOUNT:
f28ac91b SF	68	cFYI(1,("User unmount attempted"));
f28ac91b SF	69	if(cifs_sb->mnt_uid == current->uid)
	70	rc = 0;
	71	else {
	72	rc = -EACCES;
	73	cFYI(1,("uids do not match"));
	74	}
	75	break;
	76	#ifdef CONFIG_CIFS_POSIX
1da177e4	77	case EXT2_IOC_GETFLAGS:
f654bac2	78	if(CIFS_UNIX_EXTATTR_CAP & caps) {
f28ac91b	79	if (pSMBFile == NULL)
c81156dd	80	break;
f654bac2 SF	81	rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
	82	&ExtAttrBits, &ExtAttrMask);
	83	if(rc == 0)
	84	rc = put_user(ExtAttrBits &
	85	EXT2_FL_USER_VISIBLE,
	86	(int __user *)arg);
	87	}
	88	break;
	89
1da177e4	90	case EXT2_IOC_SETFLAGS:
f654bac2 SF	91	if(CIFS_UNIX_EXTATTR_CAP & caps) {
	92	if(get_user(ExtAttrBits,(int __user *)arg)) {
	93	rc = -EFAULT;
c81156dd	94	break;
f654bac2	95	}
f28ac91b	96	if (pSMBFile == NULL)
c81156dd	97	break;
f28ac91b	98	/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
f654bac2 SF	99	extAttrBits, &ExtAttrMask);*/
	100
	101	}
1da177e4	102	cFYI(1,("set flags not implemented yet"));
f654bac2	103	break;
f28ac91b	104	#endif /* CONFIG_CIFS_POSIX */
1da177e4 LT	105	default:
1da177e4 LT	106	cFYI(1,("unsupported ioctl"));
f28ac91b	107	break;
1da177e4	108	}
f654bac2	109
f654bac2	110	FreeXid(xid);
1da177e4 LT	111	return rc;
1da177e4 LT	112	}