[GitHub/mt8127/android_kernel_alcatel_ttab.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/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;
}

typedef struct compat_xfs_fsop_geom_v1 {
	__u32		blocksize;	/* filesystem (data) block size */
	__u32		rtextsize;	/* realtime extent size		*/
	__u32		agblocks;	/* fsblocks in an AG		*/
	__u32		agcount;	/* number of allocation groups	*/
	__u32		logblocks;	/* fsblocks in the log		*/
	__u32		sectsize;	/* (data) sector size, bytes	*/
	__u32		inodesize;	/* inode size in bytes		*/
	__u32		imaxpct;	/* max allowed inode space(%)	*/
	__u64		datablocks;	/* fsblocks in data subvolume	*/
	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
	__u64		rtextents;	/* rt extents in realtime subvol*/
	__u64		logstart;	/* starting fsblock of the log	*/
	unsigned char	uuid[16];	/* unique id of the filesystem	*/
	__u32		sunit;		/* stripe unit, fsblocks	*/
	__u32		swidth;		/* stripe width, fsblocks	*/
	__s32		version;	/* structure version		*/
	__u32		flags;		/* superblock version flags	*/
	__u32		logsectsize;	/* log sector size, bytes	*/
	__u32		rtsectsize;	/* realtime sector size, bytes	*/
	__u32		dirblocksize;	/* directory block size, bytes	*/
} __attribute__((packed)) compat_xfs_fsop_geom_v1_t;

#define XFS_IOC_FSGEOMETRY_V1_32  \
	_IOR ('X', 100, struct compat_xfs_fsop_geom_v1)

STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg)
{
	compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg;
	xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p));

	if (copy_in_user(p, p32, sizeof(*p32)))
		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_path.dentry->d_inode;
	bhv_vnode_t	*vp = vn_from_inode(inode);
	int		error;

	switch (cmd) {
	case XFS_IOC_DIOINFO:
	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;
	case XFS_IOC_FSGEOMETRY_V1_32:
		arg = xfs_ioctl32_geom_v1(arg);
		cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1);
		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:
	case XFS_IOC_FSGEOMETRY_V1:
		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/compat.h>
	19	#include <linux/init.h>
	20	#include <linux/ioctl.h>
1da177e4 LT	21	#include <linux/syscalls.h>
	22	#include <linux/types.h>
	23	#include <linux/fs.h>
	24	#include <asm/uaccess.h>
1da177e4 LT	25	#include "xfs.h"
	26	#include "xfs_types.h"
	27	#include "xfs_fs.h"
	28	#include "xfs_vfs.h"
	29	#include "xfs_vnode.h"
	30	#include "xfs_dfrag.h"
	31
526c420c ES	32	#define _NATIVE_IOC(cmd, type) \
	33	_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
	34
1da177e4 LT	35	#if defined(CONFIG_IA64) \|\| defined(CONFIG_X86_64)
1da177e4 LT	36	#define BROKEN_X86_ALIGNMENT
526c420c ES	37	/* on ia32 l_start is on a 32-bit boundary */
	38	typedef struct xfs_flock64_32 {
	39	__s16 l_type;
	40	__s16 l_whence;
	41	__s64 l_start __attribute__((packed));
	42	/* len == 0 means until end of file */
	43	__s64 l_len __attribute__((packed));
	44	__s32 l_sysid;
	45	__u32 l_pid;
	46	__s32 l_pad[4]; /* reserve area */
	47	} xfs_flock64_32_t;
	48
	49	#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
	50	#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
	51	#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
	52	#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
	53	#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
	54	#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
	55	#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
	56	#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
	57
	58	/* just account for different alignment */
	59	STATIC unsigned long
	60	xfs_ioctl32_flock(
	61	unsigned long arg)
	62	{
	63	xfs_flock64_32_t __user p32 = (void __user )arg;
	64	xfs_flock64_t __user p = compat_alloc_user_space(sizeof(p));
	65
	66	if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) \|\|
	67	copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) \|\|
	68	copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) \|\|
	69	copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) \|\|
	70	copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) \|\|
	71	copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) \|\|
	72	copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
	73	return -EFAULT;
e0edd596	74
526c420c ES	75	return (unsigned long)p;
	76	}
	77
547e00c3 MM	78	typedef struct compat_xfs_fsop_geom_v1 {
	79	__u32 blocksize; /* filesystem (data) block size */
	80	__u32 rtextsize; /* realtime extent size */
	81	__u32 agblocks; /* fsblocks in an AG */
	82	__u32 agcount; /* number of allocation groups */
	83	__u32 logblocks; /* fsblocks in the log */
	84	__u32 sectsize; /* (data) sector size, bytes */
	85	__u32 inodesize; /* inode size in bytes */
	86	__u32 imaxpct; /* max allowed inode space(%) */
	87	__u64 datablocks; /* fsblocks in data subvolume */
	88	__u64 rtblocks; /* fsblocks in realtime subvol */
	89	__u64 rtextents; /* rt extents in realtime subvol*/
	90	__u64 logstart; /* starting fsblock of the log */
	91	unsigned char uuid[16]; /* unique id of the filesystem */
	92	__u32 sunit; /* stripe unit, fsblocks */
	93	__u32 swidth; /* stripe width, fsblocks */
	94	__s32 version; /* structure version */
	95	__u32 flags; /* superblock version flags */
	96	__u32 logsectsize; /* log sector size, bytes */
	97	__u32 rtsectsize; /* realtime sector size, bytes */
	98	__u32 dirblocksize; /* directory block size, bytes */
	99	} __attribute__((packed)) compat_xfs_fsop_geom_v1_t;
	100
	101	#define XFS_IOC_FSGEOMETRY_V1_32 \
	102	_IOR ('X', 100, struct compat_xfs_fsop_geom_v1)
	103
	104	STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg)
	105	{
	106	compat_xfs_fsop_geom_v1_t __user p32 = (void __user )arg;
	107	xfs_fsop_geom_v1_t __user p = compat_alloc_user_space(sizeof(p));
	108
	109	if (copy_in_user(p, p32, sizeof(*p32)))
	110	return -EFAULT;
	111	return (unsigned long)p;
	112	}
	113
1da177e4 LT	114	#else
	115
	116	typedef struct xfs_fsop_bulkreq32 {
	117	compat_uptr_t lastip; /* last inode # pointer */
	118	__s32 icount; /* count of entries in buffer */
	119	compat_uptr_t ubuffer; /* user buffer for inode desc. */
	120	__s32 ocount; /* output count pointer */
	121	} xfs_fsop_bulkreq32_t;
	122
d3870398 NS	123	STATIC unsigned long
	124	xfs_ioctl32_bulkstat(
	125	unsigned long arg)
1da177e4 LT	126	{
	127	xfs_fsop_bulkreq32_t __user p32 = (void __user )arg;
	128	xfs_fsop_bulkreq_t __user p = compat_alloc_user_space(sizeof(p));
	129	u32 addr;
	130
	131	if (get_user(addr, &p32->lastip) \|\|
	132	put_user(compat_ptr(addr), &p->lastip) \|\|
	133	copy_in_user(&p->icount, &p32->icount, sizeof(s32)) \|\|
	134	get_user(addr, &p32->ubuffer) \|\|
	135	put_user(compat_ptr(addr), &p->ubuffer) \|\|
	136	get_user(addr, &p32->ocount) \|\|
	137	put_user(compat_ptr(addr), &p->ocount))
	138	return -EFAULT;
	139
	140	return (unsigned long)p;
	141	}
	142	#endif
	143
d3870398	144	STATIC long
e0edd596 NS	145	xfs_compat_ioctl(
	146	int mode,
	147	struct file *file,
	148	unsigned cmd,
	149	unsigned long arg)
1da177e4	150	{
e678fb0d	151	struct inode *inode = file->f_path.dentry->d_inode;
67fcaa73	152	bhv_vnode_t *vp = vn_from_inode(inode);
1da177e4	153	int error;
1da177e4 LT	154
	155	switch (cmd) {
	156	case XFS_IOC_DIOINFO:
1da177e4 LT	157	case XFS_IOC_FSGEOMETRY:
	158	case XFS_IOC_GETVERSION:
	159	case XFS_IOC_GETXFLAGS:
	160	case XFS_IOC_SETXFLAGS:
	161	case XFS_IOC_FSGETXATTR:
	162	case XFS_IOC_FSSETXATTR:
	163	case XFS_IOC_FSGETXATTRA:
	164	case XFS_IOC_FSSETDM:
	165	case XFS_IOC_GETBMAP:
	166	case XFS_IOC_GETBMAPA:
	167	case XFS_IOC_GETBMAPX:
	168	/* not handled
	169	case XFS_IOC_FD_TO_HANDLE:
	170	case XFS_IOC_PATH_TO_HANDLE:
1da177e4 LT	171	case XFS_IOC_PATH_TO_FSHANDLE:
	172	case XFS_IOC_OPEN_BY_HANDLE:
	173	case XFS_IOC_FSSETDM_BY_HANDLE:
	174	case XFS_IOC_READLINK_BY_HANDLE:
	175	case XFS_IOC_ATTRLIST_BY_HANDLE:
	176	case XFS_IOC_ATTRMULTI_BY_HANDLE:
	177	*/
	178	case XFS_IOC_FSCOUNTS:
	179	case XFS_IOC_SET_RESBLKS:
	180	case XFS_IOC_GET_RESBLKS:
	181	case XFS_IOC_FSGROWFSDATA:
	182	case XFS_IOC_FSGROWFSLOG:
	183	case XFS_IOC_FSGROWFSRT:
	184	case XFS_IOC_FREEZE:
	185	case XFS_IOC_THAW:
	186	case XFS_IOC_GOINGDOWN:
	187	case XFS_IOC_ERROR_INJECTION:
	188	case XFS_IOC_ERROR_CLEARALL:
	189	break;
	190
526c420c ES	191	#ifdef BROKEN_X86_ALIGNMENT
	192	/* xfs_flock_t has wrong u32 vs u64 alignment */
	193	case XFS_IOC_ALLOCSP_32:
	194	case XFS_IOC_FREESP_32:
	195	case XFS_IOC_ALLOCSP64_32:
	196	case XFS_IOC_FREESP64_32:
	197	case XFS_IOC_RESVSP_32:
	198	case XFS_IOC_UNRESVSP_32:
	199	case XFS_IOC_RESVSP64_32:
	200	case XFS_IOC_UNRESVSP64_32:
	201	arg = xfs_ioctl32_flock(arg);
	202	cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
	203	break;
547e00c3 MM	204	case XFS_IOC_FSGEOMETRY_V1_32:
	205	arg = xfs_ioctl32_geom_v1(arg);
	206	cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1);
	207	break;
526c420c ES	208
526c420c ES	209	#else /* These are handled fine if no alignment issues */
1da177e4 LT	210	case XFS_IOC_ALLOCSP:
	211	case XFS_IOC_FREESP:
	212	case XFS_IOC_RESVSP:
	213	case XFS_IOC_UNRESVSP:
	214	case XFS_IOC_ALLOCSP64:
	215	case XFS_IOC_FREESP64:
	216	case XFS_IOC_RESVSP64:
	217	case XFS_IOC_UNRESVSP64:
547e00c3	218	case XFS_IOC_FSGEOMETRY_V1:
526c420c ES	219	break;
	220
	221	/* xfs_bstat_t still has wrong u32 vs u64 alignment */
1da177e4 LT	222	case XFS_IOC_SWAPEXT:
	223	break;
	224
	225	case XFS_IOC_FSBULKSTAT_SINGLE:
	226	case XFS_IOC_FSBULKSTAT:
	227	case XFS_IOC_FSINUMBERS:
	228	arg = xfs_ioctl32_bulkstat(arg);
	229	break;
	230	#endif
	231	default:
	232	return -ENOIOCTLCMD;
	233	}
	234
67fcaa73	235	error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg);
1da177e4 LT	236	VMODIFY(vp);
	237
	238	return error;
	239	}
	240
d3870398	241	long
a50cd269	242	xfs_file_compat_ioctl(
e0edd596	243	struct file *file,
d3870398 NS	244	unsigned cmd,
d3870398 NS	245	unsigned long arg)
1da177e4	246	{
e0edd596	247	return xfs_compat_ioctl(0, file, cmd, arg);
1da177e4 LT	248	}
1da177e4 LT	249
d3870398	250	long
a50cd269	251	xfs_file_compat_invis_ioctl(
e0edd596	252	struct file *file,
d3870398 NS	253	unsigned cmd,
d3870398 NS	254	unsigned long arg)
1da177e4	255	{
e0edd596	256	return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
1da177e4	257	}