[linux-block.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 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/config.h>
#include <linux/compat.h>
#include <linux/init.h>
#include <linux/ioctl.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
xfs_compat_ioctl(
	int		mode,
	struct file	*file,
	unsigned	cmd,
	unsigned long	arg)
{
	struct inode	*inode = file->f_dentry->d_inode;
	bhv_vnode_t	*vp = vn_from_inode(inode);
	int		error;

	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;
	}

	error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg);
	VMODIFY(vp);

	return error;
}

long
xfs_file_compat_ioctl(
	struct file		*file,
	unsigned		cmd,
	unsigned long		arg)
{
	return xfs_compat_ioctl(0, file, cmd, arg);
}

long
xfs_file_compat_invis_ioctl(
	struct file		*file,
	unsigned		cmd,
	unsigned long		arg)
{
	return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
}
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2004-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
1da177e4	13	*
7b718769 NS	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1da177e4	17	*/
1da177e4 LT	18	#include <linux/config.h>
	19	#include <linux/compat.h>
	20	#include <linux/init.h>
	21	#include <linux/ioctl.h>
1da177e4 LT	22	#include <linux/syscalls.h>
	23	#include <linux/types.h>
	24	#include <linux/fs.h>
	25	#include <asm/uaccess.h>
1da177e4 LT	26	#include "xfs.h"
	27	#include "xfs_types.h"
	28	#include "xfs_fs.h"
	29	#include "xfs_vfs.h"
	30	#include "xfs_vnode.h"
	31	#include "xfs_dfrag.h"
	32
526c420c ES	33	#define _NATIVE_IOC(cmd, type) \
	34	_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
	35
1da177e4 LT	36	#if defined(CONFIG_IA64) \|\| defined(CONFIG_X86_64)
1da177e4 LT	37	#define BROKEN_X86_ALIGNMENT
526c420c ES	38	/* on ia32 l_start is on a 32-bit boundary */
	39	typedef struct xfs_flock64_32 {
	40	__s16 l_type;
	41	__s16 l_whence;
	42	__s64 l_start __attribute__((packed));
	43	/* len == 0 means until end of file */
	44	__s64 l_len __attribute__((packed));
	45	__s32 l_sysid;
	46	__u32 l_pid;
	47	__s32 l_pad[4]; /* reserve area */
	48	} xfs_flock64_32_t;
	49
	50	#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
	51	#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
	52	#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
	53	#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
	54	#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
	55	#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
	56	#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
	57	#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
	58
	59	/* just account for different alignment */
	60	STATIC unsigned long
	61	xfs_ioctl32_flock(
	62	unsigned long arg)
	63	{
	64	xfs_flock64_32_t __user p32 = (void __user )arg;
	65	xfs_flock64_t __user p = compat_alloc_user_space(sizeof(p));
	66
	67	if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) \|\|
	68	copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) \|\|
	69	copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) \|\|
	70	copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) \|\|
	71	copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) \|\|
	72	copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) \|\|
	73	copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
	74	return -EFAULT;
e0edd596	75
526c420c ES	76	return (unsigned long)p;
	77	}
	78
1da177e4 LT	79	#else
	80
	81	typedef struct xfs_fsop_bulkreq32 {
	82	compat_uptr_t lastip; /* last inode # pointer */
	83	__s32 icount; /* count of entries in buffer */
	84	compat_uptr_t ubuffer; /* user buffer for inode desc. */
	85	__s32 ocount; /* output count pointer */
	86	} xfs_fsop_bulkreq32_t;
	87
d3870398 NS	88	STATIC unsigned long
	89	xfs_ioctl32_bulkstat(
	90	unsigned long arg)
1da177e4 LT	91	{
	92	xfs_fsop_bulkreq32_t __user p32 = (void __user )arg;
	93	xfs_fsop_bulkreq_t __user p = compat_alloc_user_space(sizeof(p));
	94	u32 addr;
	95
	96	if (get_user(addr, &p32->lastip) \|\|
	97	put_user(compat_ptr(addr), &p->lastip) \|\|
	98	copy_in_user(&p->icount, &p32->icount, sizeof(s32)) \|\|
	99	get_user(addr, &p32->ubuffer) \|\|
	100	put_user(compat_ptr(addr), &p->ubuffer) \|\|
	101	get_user(addr, &p32->ocount) \|\|
	102	put_user(compat_ptr(addr), &p->ocount))
	103	return -EFAULT;
	104
	105	return (unsigned long)p;
	106	}
	107	#endif
	108
d3870398	109	STATIC long
e0edd596 NS	110	xfs_compat_ioctl(
	111	int mode,
	112	struct file *file,
	113	unsigned cmd,
	114	unsigned long arg)
1da177e4	115	{
e0edd596	116	struct inode *inode = file->f_dentry->d_inode;
67fcaa73	117	bhv_vnode_t *vp = vn_from_inode(inode);
1da177e4	118	int error;
1da177e4 LT	119
	120	switch (cmd) {
	121	case XFS_IOC_DIOINFO:
	122	case XFS_IOC_FSGEOMETRY_V1:
	123	case XFS_IOC_FSGEOMETRY:
	124	case XFS_IOC_GETVERSION:
	125	case XFS_IOC_GETXFLAGS:
	126	case XFS_IOC_SETXFLAGS:
	127	case XFS_IOC_FSGETXATTR:
	128	case XFS_IOC_FSSETXATTR:
	129	case XFS_IOC_FSGETXATTRA:
	130	case XFS_IOC_FSSETDM:
	131	case XFS_IOC_GETBMAP:
	132	case XFS_IOC_GETBMAPA:
	133	case XFS_IOC_GETBMAPX:
	134	/* not handled
	135	case XFS_IOC_FD_TO_HANDLE:
	136	case XFS_IOC_PATH_TO_HANDLE:
1da177e4 LT	137	case XFS_IOC_PATH_TO_FSHANDLE:
	138	case XFS_IOC_OPEN_BY_HANDLE:
	139	case XFS_IOC_FSSETDM_BY_HANDLE:
	140	case XFS_IOC_READLINK_BY_HANDLE:
	141	case XFS_IOC_ATTRLIST_BY_HANDLE:
	142	case XFS_IOC_ATTRMULTI_BY_HANDLE:
	143	*/
	144	case XFS_IOC_FSCOUNTS:
	145	case XFS_IOC_SET_RESBLKS:
	146	case XFS_IOC_GET_RESBLKS:
	147	case XFS_IOC_FSGROWFSDATA:
	148	case XFS_IOC_FSGROWFSLOG:
	149	case XFS_IOC_FSGROWFSRT:
	150	case XFS_IOC_FREEZE:
	151	case XFS_IOC_THAW:
	152	case XFS_IOC_GOINGDOWN:
	153	case XFS_IOC_ERROR_INJECTION:
	154	case XFS_IOC_ERROR_CLEARALL:
	155	break;
	156
526c420c ES	157	#ifdef BROKEN_X86_ALIGNMENT
	158	/* xfs_flock_t has wrong u32 vs u64 alignment */
	159	case XFS_IOC_ALLOCSP_32:
	160	case XFS_IOC_FREESP_32:
	161	case XFS_IOC_ALLOCSP64_32:
	162	case XFS_IOC_FREESP64_32:
	163	case XFS_IOC_RESVSP_32:
	164	case XFS_IOC_UNRESVSP_32:
	165	case XFS_IOC_RESVSP64_32:
	166	case XFS_IOC_UNRESVSP64_32:
	167	arg = xfs_ioctl32_flock(arg);
	168	cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
	169	break;
	170
	171	#else /* These are handled fine if no alignment issues */
1da177e4 LT	172	case XFS_IOC_ALLOCSP:
	173	case XFS_IOC_FREESP:
	174	case XFS_IOC_RESVSP:
	175	case XFS_IOC_UNRESVSP:
	176	case XFS_IOC_ALLOCSP64:
	177	case XFS_IOC_FREESP64:
	178	case XFS_IOC_RESVSP64:
	179	case XFS_IOC_UNRESVSP64:
526c420c ES	180	break;
	181
	182	/* xfs_bstat_t still has wrong u32 vs u64 alignment */
1da177e4 LT	183	case XFS_IOC_SWAPEXT:
	184	break;
	185
	186	case XFS_IOC_FSBULKSTAT_SINGLE:
	187	case XFS_IOC_FSBULKSTAT:
	188	case XFS_IOC_FSINUMBERS:
	189	arg = xfs_ioctl32_bulkstat(arg);
	190	break;
	191	#endif
	192	default:
	193	return -ENOIOCTLCMD;
	194	}
	195
67fcaa73	196	error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg);
1da177e4 LT	197	VMODIFY(vp);
	198
	199	return error;
	200	}
	201
d3870398	202	long
a50cd269	203	xfs_file_compat_ioctl(
e0edd596	204	struct file *file,
d3870398 NS	205	unsigned cmd,
d3870398 NS	206	unsigned long arg)
1da177e4	207	{
e0edd596	208	return xfs_compat_ioctl(0, file, cmd, arg);
1da177e4 LT	209	}
1da177e4 LT	210
d3870398	211	long
a50cd269	212	xfs_file_compat_invis_ioctl(
e0edd596	213	struct file *file,
d3870398 NS	214	unsigned cmd,
d3870398 NS	215	unsigned long arg)
1da177e4	216	{
e0edd596	217	return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
1da177e4	218	}