[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_ioctl32.c

/*
 * Copyright (c) 2004-2005 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */

#include <linux/config.h>
#include <linux/compat.h>
#include <linux/init.h>
#include <linux/ioctl.h>
#include <linux/ioctl32.h>
#include <linux/syscalls.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <asm/uaccess.h>

#include "xfs.h"
#include "xfs_types.h"
#include "xfs_fs.h"
#include "xfs_vfs.h"
#include "xfs_vnode.h"
#include "xfs_dfrag.h"

#define  _NATIVE_IOC(cmd, type) \
	  _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))

#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
#define BROKEN_X86_ALIGNMENT
/* on ia32 l_start is on a 32-bit boundary */
typedef struct xfs_flock64_32 {
	__s16		l_type;
	__s16		l_whence;
	__s64		l_start	__attribute__((packed));
			/* len == 0 means until end of file */
	__s64		l_len __attribute__((packed));
	__s32		l_sysid;
	__u32		l_pid;
	__s32		l_pad[4];	/* reserve area */
} xfs_flock64_32_t;

#define XFS_IOC_ALLOCSP_32	_IOW ('X', 10, struct xfs_flock64_32)
#define XFS_IOC_FREESP_32	_IOW ('X', 11, struct xfs_flock64_32)
#define XFS_IOC_ALLOCSP64_32	_IOW ('X', 36, struct xfs_flock64_32)
#define XFS_IOC_FREESP64_32	_IOW ('X', 37, struct xfs_flock64_32)
#define XFS_IOC_RESVSP_32	_IOW ('X', 40, struct xfs_flock64_32)
#define XFS_IOC_UNRESVSP_32	_IOW ('X', 41, struct xfs_flock64_32)
#define XFS_IOC_RESVSP64_32	_IOW ('X', 42, struct xfs_flock64_32)
#define XFS_IOC_UNRESVSP64_32	_IOW ('X', 43, struct xfs_flock64_32)

/* just account for different alignment */
STATIC unsigned long
xfs_ioctl32_flock(
	unsigned long		arg)
{
	xfs_flock64_32_t	__user *p32 = (void __user *)arg;
	xfs_flock64_t		__user *p = compat_alloc_user_space(sizeof(*p));

	if (copy_in_user(&p->l_type,	&p32->l_type,	sizeof(s16)) ||
	    copy_in_user(&p->l_whence,	&p32->l_whence, sizeof(s16)) ||
	    copy_in_user(&p->l_start,	&p32->l_start,	sizeof(s64)) ||
	    copy_in_user(&p->l_len,	&p32->l_len,	sizeof(s64)) ||
	    copy_in_user(&p->l_sysid,	&p32->l_sysid,	sizeof(s32)) ||
	    copy_in_user(&p->l_pid,	&p32->l_pid,	sizeof(u32)) ||
	    copy_in_user(&p->l_pad,	&p32->l_pad,	4*sizeof(u32)))
		return -EFAULT;
	
	return (unsigned long)p;
}

#else

typedef struct xfs_fsop_bulkreq32 {
	compat_uptr_t	lastip;		/* last inode # pointer		*/
	__s32		icount;		/* count of entries in buffer	*/
	compat_uptr_t	ubuffer;	/* user buffer for inode desc.	*/
	__s32		ocount;		/* output count pointer		*/
} xfs_fsop_bulkreq32_t;

STATIC unsigned long
xfs_ioctl32_bulkstat(
	unsigned long		arg)
{
	xfs_fsop_bulkreq32_t	__user *p32 = (void __user *)arg;
	xfs_fsop_bulkreq_t	__user *p = compat_alloc_user_space(sizeof(*p));
	u32			addr;

	if (get_user(addr, &p32->lastip) ||
	    put_user(compat_ptr(addr), &p->lastip) ||
	    copy_in_user(&p->icount, &p32->icount, sizeof(s32)) ||
	    get_user(addr, &p32->ubuffer) ||
	    put_user(compat_ptr(addr), &p->ubuffer) ||
	    get_user(addr, &p32->ocount) ||
	    put_user(compat_ptr(addr), &p->ocount))
		return -EFAULT;

	return (unsigned long)p;
}
#endif

STATIC long
__linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg)
{
	int		error;
	struct		inode *inode = f->f_dentry->d_inode;
	vnode_t		*vp = LINVFS_GET_VP(inode);

	switch (cmd) {
	case XFS_IOC_DIOINFO:
	case XFS_IOC_FSGEOMETRY_V1:
	case XFS_IOC_FSGEOMETRY:
	case XFS_IOC_GETVERSION:
	case XFS_IOC_GETXFLAGS:
	case XFS_IOC_SETXFLAGS:
	case XFS_IOC_FSGETXATTR:
	case XFS_IOC_FSSETXATTR:
	case XFS_IOC_FSGETXATTRA:
	case XFS_IOC_FSSETDM:
	case XFS_IOC_GETBMAP:
	case XFS_IOC_GETBMAPA:
	case XFS_IOC_GETBMAPX:
/* not handled
	case XFS_IOC_FD_TO_HANDLE:
	case XFS_IOC_PATH_TO_HANDLE:
	case XFS_IOC_PATH_TO_FSHANDLE:
	case XFS_IOC_OPEN_BY_HANDLE:
	case XFS_IOC_FSSETDM_BY_HANDLE:
	case XFS_IOC_READLINK_BY_HANDLE:
	case XFS_IOC_ATTRLIST_BY_HANDLE:
	case XFS_IOC_ATTRMULTI_BY_HANDLE:
*/
	case XFS_IOC_FSCOUNTS:
	case XFS_IOC_SET_RESBLKS:
	case XFS_IOC_GET_RESBLKS:
	case XFS_IOC_FSGROWFSDATA:
	case XFS_IOC_FSGROWFSLOG:
	case XFS_IOC_FSGROWFSRT:
	case XFS_IOC_FREEZE:
	case XFS_IOC_THAW:
	case XFS_IOC_GOINGDOWN:
	case XFS_IOC_ERROR_INJECTION:
	case XFS_IOC_ERROR_CLEARALL:
		break;

#ifdef BROKEN_X86_ALIGNMENT
	/* xfs_flock_t has wrong u32 vs u64 alignment */
	case XFS_IOC_ALLOCSP_32:
	case XFS_IOC_FREESP_32:
	case XFS_IOC_ALLOCSP64_32:
	case XFS_IOC_FREESP64_32:
	case XFS_IOC_RESVSP_32:
	case XFS_IOC_UNRESVSP_32:
	case XFS_IOC_RESVSP64_32:
	case XFS_IOC_UNRESVSP64_32:
		arg = xfs_ioctl32_flock(arg);
		cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
		break;

#else /* These are handled fine if no alignment issues */
	case XFS_IOC_ALLOCSP:
	case XFS_IOC_FREESP:
	case XFS_IOC_RESVSP:
	case XFS_IOC_UNRESVSP:
	case XFS_IOC_ALLOCSP64:
	case XFS_IOC_FREESP64:
	case XFS_IOC_RESVSP64:
	case XFS_IOC_UNRESVSP64:
		break;

	/* xfs_bstat_t still has wrong u32 vs u64 alignment */
	case XFS_IOC_SWAPEXT:
		break;

	case XFS_IOC_FSBULKSTAT_SINGLE:
	case XFS_IOC_FSBULKSTAT:
	case XFS_IOC_FSINUMBERS:
		arg = xfs_ioctl32_bulkstat(arg);
		break;
#endif
	default:
		return -ENOIOCTLCMD;
	}

	VOP_IOCTL(vp, inode, f, mode, cmd, (void __user *)arg, error);
	VMODIFY(vp);

	return error;
}

long
linvfs_compat_ioctl(
	struct file		*f,
	unsigned		cmd,
	unsigned long		arg)
{
	return __linvfs_compat_ioctl(0, f, cmd, arg);
}

long
linvfs_compat_invis_ioctl(
	struct file		*f,
	unsigned		cmd,
	unsigned long		arg)
{
	return __linvfs_compat_ioctl(IO_INVIS, f, cmd, arg);
}
Commit	Line	Data
1da177e4	1	/*
d3870398	2	* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
1da177e4 LT	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of version 2 of the GNU General Public License as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it would be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	11	*
	12	* Further, this software is distributed without any warranty that it is
	13	* free of the rightful claim of any third person regarding infringement
	14	* or the like. Any license provided herein, whether implied or
	15	* otherwise, applies only to this software file. Patent licenses, if
	16	* any, provided herein do not apply to combinations of this program with
	17	* other software, or any other product whatsoever.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write the Free Software Foundation, Inc., 59
	21	* Temple Place - Suite 330, Boston MA 02111-1307, USA.
	22	*
	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
	24	* Mountain View, CA 94043, or:
	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32
	33	#include <linux/config.h>
	34	#include <linux/compat.h>
	35	#include <linux/init.h>
	36	#include <linux/ioctl.h>
	37	#include <linux/ioctl32.h>
	38	#include <linux/syscalls.h>
	39	#include <linux/types.h>
	40	#include <linux/fs.h>
	41	#include <asm/uaccess.h>
	42
	43	#include "xfs.h"
	44	#include "xfs_types.h"
	45	#include "xfs_fs.h"
	46	#include "xfs_vfs.h"
	47	#include "xfs_vnode.h"
	48	#include "xfs_dfrag.h"
	49
526c420c ES	50	#define _NATIVE_IOC(cmd, type) \
	51	_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
	52
1da177e4 LT	53	#if defined(CONFIG_IA64) \|\| defined(CONFIG_X86_64)
1da177e4 LT	54	#define BROKEN_X86_ALIGNMENT
526c420c ES	55	/* on ia32 l_start is on a 32-bit boundary */
	56	typedef struct xfs_flock64_32 {
	57	__s16 l_type;
	58	__s16 l_whence;
	59	__s64 l_start __attribute__((packed));
	60	/* len == 0 means until end of file */
	61	__s64 l_len __attribute__((packed));
	62	__s32 l_sysid;
	63	__u32 l_pid;
	64	__s32 l_pad[4]; /* reserve area */
	65	} xfs_flock64_32_t;
	66
	67	#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
	68	#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
	69	#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
	70	#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
	71	#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
	72	#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
	73	#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
	74	#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
	75
	76	/* just account for different alignment */
	77	STATIC unsigned long
	78	xfs_ioctl32_flock(
	79	unsigned long arg)
	80	{
	81	xfs_flock64_32_t __user p32 = (void __user )arg;
	82	xfs_flock64_t __user p = compat_alloc_user_space(sizeof(p));
	83
	84	if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) \|\|
	85	copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) \|\|
	86	copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) \|\|
	87	copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) \|\|
	88	copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) \|\|
	89	copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) \|\|
	90	copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
	91	return -EFAULT;
	92
	93	return (unsigned long)p;
	94	}
	95
1da177e4 LT	96	#else
	97
	98	typedef struct xfs_fsop_bulkreq32 {
	99	compat_uptr_t lastip; /* last inode # pointer */
	100	__s32 icount; /* count of entries in buffer */
	101	compat_uptr_t ubuffer; /* user buffer for inode desc. */
	102	__s32 ocount; /* output count pointer */
	103	} xfs_fsop_bulkreq32_t;
	104
d3870398 NS	105	STATIC unsigned long
	106	xfs_ioctl32_bulkstat(
	107	unsigned long arg)
1da177e4 LT	108	{
	109	xfs_fsop_bulkreq32_t __user p32 = (void __user )arg;
	110	xfs_fsop_bulkreq_t __user p = compat_alloc_user_space(sizeof(p));
	111	u32 addr;
	112
	113	if (get_user(addr, &p32->lastip) \|\|
	114	put_user(compat_ptr(addr), &p->lastip) \|\|
	115	copy_in_user(&p->icount, &p32->icount, sizeof(s32)) \|\|
	116	get_user(addr, &p32->ubuffer) \|\|
	117	put_user(compat_ptr(addr), &p->ubuffer) \|\|
	118	get_user(addr, &p32->ocount) \|\|
	119	put_user(compat_ptr(addr), &p->ocount))
	120	return -EFAULT;
	121
	122	return (unsigned long)p;
	123	}
	124	#endif
	125
d3870398 NS	126	STATIC long
d3870398 NS	127	__linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg)
1da177e4 LT	128	{
1da177e4 LT	129	int error;
d3870398	130	struct inode *inode = f->f_dentry->d_inode;
1da177e4 LT	131	vnode_t *vp = LINVFS_GET_VP(inode);
	132
	133	switch (cmd) {
	134	case XFS_IOC_DIOINFO:
	135	case XFS_IOC_FSGEOMETRY_V1:
	136	case XFS_IOC_FSGEOMETRY:
	137	case XFS_IOC_GETVERSION:
	138	case XFS_IOC_GETXFLAGS:
	139	case XFS_IOC_SETXFLAGS:
	140	case XFS_IOC_FSGETXATTR:
	141	case XFS_IOC_FSSETXATTR:
	142	case XFS_IOC_FSGETXATTRA:
	143	case XFS_IOC_FSSETDM:
	144	case XFS_IOC_GETBMAP:
	145	case XFS_IOC_GETBMAPA:
	146	case XFS_IOC_GETBMAPX:
	147	/* not handled
	148	case XFS_IOC_FD_TO_HANDLE:
	149	case XFS_IOC_PATH_TO_HANDLE:
1da177e4 LT	150	case XFS_IOC_PATH_TO_FSHANDLE:
	151	case XFS_IOC_OPEN_BY_HANDLE:
	152	case XFS_IOC_FSSETDM_BY_HANDLE:
	153	case XFS_IOC_READLINK_BY_HANDLE:
	154	case XFS_IOC_ATTRLIST_BY_HANDLE:
	155	case XFS_IOC_ATTRMULTI_BY_HANDLE:
	156	*/
	157	case XFS_IOC_FSCOUNTS:
	158	case XFS_IOC_SET_RESBLKS:
	159	case XFS_IOC_GET_RESBLKS:
	160	case XFS_IOC_FSGROWFSDATA:
	161	case XFS_IOC_FSGROWFSLOG:
	162	case XFS_IOC_FSGROWFSRT:
	163	case XFS_IOC_FREEZE:
	164	case XFS_IOC_THAW:
	165	case XFS_IOC_GOINGDOWN:
	166	case XFS_IOC_ERROR_INJECTION:
	167	case XFS_IOC_ERROR_CLEARALL:
	168	break;
	169
526c420c ES	170	#ifdef BROKEN_X86_ALIGNMENT
	171	/* xfs_flock_t has wrong u32 vs u64 alignment */
	172	case XFS_IOC_ALLOCSP_32:
	173	case XFS_IOC_FREESP_32:
	174	case XFS_IOC_ALLOCSP64_32:
	175	case XFS_IOC_FREESP64_32:
	176	case XFS_IOC_RESVSP_32:
	177	case XFS_IOC_UNRESVSP_32:
	178	case XFS_IOC_RESVSP64_32:
	179	case XFS_IOC_UNRESVSP64_32:
	180	arg = xfs_ioctl32_flock(arg);
	181	cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
	182	break;
	183
	184	#else /* These are handled fine if no alignment issues */
1da177e4 LT	185	case XFS_IOC_ALLOCSP:
	186	case XFS_IOC_FREESP:
	187	case XFS_IOC_RESVSP:
	188	case XFS_IOC_UNRESVSP:
	189	case XFS_IOC_ALLOCSP64:
	190	case XFS_IOC_FREESP64:
	191	case XFS_IOC_RESVSP64:
	192	case XFS_IOC_UNRESVSP64:
526c420c ES	193	break;
	194
	195	/* xfs_bstat_t still has wrong u32 vs u64 alignment */
1da177e4 LT	196	case XFS_IOC_SWAPEXT:
	197	break;
	198
	199	case XFS_IOC_FSBULKSTAT_SINGLE:
	200	case XFS_IOC_FSBULKSTAT:
	201	case XFS_IOC_FSINUMBERS:
	202	arg = xfs_ioctl32_bulkstat(arg);
	203	break;
	204	#endif
	205	default:
	206	return -ENOIOCTLCMD;
	207	}
	208
	209	VOP_IOCTL(vp, inode, f, mode, cmd, (void __user *)arg, error);
	210	VMODIFY(vp);
	211
	212	return error;
	213	}
	214
d3870398 NS	215	long
	216	linvfs_compat_ioctl(
	217	struct file *f,
	218	unsigned cmd,
	219	unsigned long arg)
1da177e4	220	{
d3870398	221	return __linvfs_compat_ioctl(0, f, cmd, arg);
1da177e4 LT	222	}
1da177e4 LT	223
d3870398 NS	224	long
	225	linvfs_compat_invis_ioctl(
	226	struct file *f,
	227	unsigned cmd,
	228	unsigned long arg)
1da177e4	229	{
d3870398	230	return __linvfs_compat_ioctl(IO_INVIS, f, cmd, arg);
1da177e4	231	}