[net-next-2.6.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_fs.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_attr_sf.h"
#include "xfs_dir2_sf.h"
#include "xfs_vfs.h"
#include "xfs_vnode.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_itable.h"
#include "xfs_error.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
#define _PACKED __attribute__((packed))
/* 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;
}

typedef struct compat_xfs_inogrp {
	__u64		xi_startino;	/* starting inode number	*/
	__s32		xi_alloccount;	/* # bits set in allocmask	*/
	__u64		xi_allocmask;	/* mask of allocated inodes	*/
} __attribute__((packed)) compat_xfs_inogrp_t;

STATIC int xfs_inumbers_fmt_compat(
	void __user *ubuffer,
	const xfs_inogrp_t *buffer,
	long count,
	long *written)
{
	compat_xfs_inogrp_t *p32 = ubuffer;
	long i;

	for (i = 0; i < count; i++) {
		if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
		    put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
		    put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
			return -EFAULT;
	}
	*written = count * sizeof(*p32);
	return 0;
}

#else

#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
#define _PACKED

#endif

/* XFS_IOC_FSBULKSTAT and friends */

typedef struct compat_xfs_bstime {
	__s32		tv_sec;		/* seconds		*/
	__s32		tv_nsec;	/* and nanoseconds	*/
} compat_xfs_bstime_t;

STATIC int xfs_bstime_store_compat(
	compat_xfs_bstime_t __user *p32,
	const xfs_bstime_t *p)
{
	__s32 sec32;

	sec32 = p->tv_sec;
	if (put_user(sec32, &p32->tv_sec) ||
	    put_user(p->tv_nsec, &p32->tv_nsec))
		return -EFAULT;
	return 0;
}

typedef struct compat_xfs_bstat {
	__u64		bs_ino;		/* inode number			*/
	__u16		bs_mode;	/* type and mode		*/
	__u16		bs_nlink;	/* number of links		*/
	__u32		bs_uid;		/* user id			*/
	__u32		bs_gid;		/* group id			*/
	__u32		bs_rdev;	/* device value			*/
	__s32		bs_blksize;	/* block size			*/
	__s64		bs_size;	/* file size			*/
	compat_xfs_bstime_t bs_atime;	/* access time			*/
	compat_xfs_bstime_t bs_mtime;	/* modify time			*/
	compat_xfs_bstime_t bs_ctime;	/* inode change time		*/
	int64_t		bs_blocks;	/* number of blocks		*/
	__u32		bs_xflags;	/* extended flags		*/
	__s32		bs_extsize;	/* extent size			*/
	__s32		bs_extents;	/* number of extents		*/
	__u32		bs_gen;		/* generation count		*/
	__u16		bs_projid;	/* project id			*/
	unsigned char	bs_pad[14];	/* pad space, unused		*/
	__u32		bs_dmevmask;	/* DMIG event mask		*/
	__u16		bs_dmstate;	/* DMIG state info		*/
	__u16		bs_aextents;	/* attribute number of extents	*/
} _PACKED compat_xfs_bstat_t;

STATIC int xfs_bulkstat_one_fmt_compat(
	void			__user *ubuffer,
	const xfs_bstat_t	*buffer)
{
	compat_xfs_bstat_t __user *p32 = ubuffer;

	if (put_user(buffer->bs_ino, &p32->bs_ino) ||
	    put_user(buffer->bs_mode, &p32->bs_mode) ||
	    put_user(buffer->bs_nlink, &p32->bs_nlink) ||
	    put_user(buffer->bs_uid, &p32->bs_uid) ||
	    put_user(buffer->bs_gid, &p32->bs_gid) ||
	    put_user(buffer->bs_rdev, &p32->bs_rdev) ||
	    put_user(buffer->bs_blksize, &p32->bs_blksize) ||
	    put_user(buffer->bs_size, &p32->bs_size) ||
	    xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
	    xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
	    xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
	    put_user(buffer->bs_blocks, &p32->bs_blocks) ||
	    put_user(buffer->bs_xflags, &p32->bs_xflags) ||
	    put_user(buffer->bs_extsize, &p32->bs_extsize) ||
	    put_user(buffer->bs_extents, &p32->bs_extents) ||
	    put_user(buffer->bs_gen, &p32->bs_gen) ||
	    put_user(buffer->bs_projid, &p32->bs_projid) ||
	    put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
	    put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
	    put_user(buffer->bs_aextents, &p32->bs_aextents))
		return -EFAULT;
	return sizeof(*p32);
}


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

#define XFS_IOC_FSBULKSTAT_32 \
	_IOWR('X', 101, struct compat_xfs_fsop_bulkreq)
#define XFS_IOC_FSBULKSTAT_SINGLE_32 \
	_IOWR('X', 102, struct compat_xfs_fsop_bulkreq)
#define XFS_IOC_FSINUMBERS_32 \
	_IOWR('X', 103, struct compat_xfs_fsop_bulkreq)

/* copied from xfs_ioctl.c */
STATIC int
xfs_ioc_bulkstat_compat(
	xfs_mount_t		*mp,
	unsigned int		cmd,
	void			__user *arg)
{
	compat_xfs_fsop_bulkreq_t __user *p32 = (void __user *)arg;
	u32			addr;
	xfs_fsop_bulkreq_t	bulkreq;
	int			count;	/* # of records returned */
	xfs_ino_t		inlast;	/* last inode number */
	int			done;
	int			error;

	/* done = 1 if there are more stats to get and if bulkstat */
	/* should be called again (unused here, but used in dmapi) */

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;

	if (XFS_FORCED_SHUTDOWN(mp))
		return -XFS_ERROR(EIO);

	if (get_user(addr, &p32->lastip))
		return -EFAULT;
	bulkreq.lastip = compat_ptr(addr);
	if (get_user(bulkreq.icount, &p32->icount) ||
	    get_user(addr, &p32->ubuffer))
		return -EFAULT;
	bulkreq.ubuffer = compat_ptr(addr);
	if (get_user(addr, &p32->ocount))
		return -EFAULT;
	bulkreq.ocount = compat_ptr(addr);

	if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
		return -XFS_ERROR(EFAULT);

	if ((count = bulkreq.icount) <= 0)
		return -XFS_ERROR(EINVAL);

	if (cmd == XFS_IOC_FSINUMBERS)
		error = xfs_inumbers(mp, &inlast, &count,
				bulkreq.ubuffer, xfs_inumbers_fmt_compat);
	else {
		/* declare a var to get a warning in case the type changes */
		bulkstat_one_fmt_pf formatter = xfs_bulkstat_one_fmt_compat;
		error = xfs_bulkstat(mp, &inlast, &count,
			xfs_bulkstat_one, formatter,
			sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
			BULKSTAT_FG_QUICK, &done);
	}
	if (error)
		return -error;

	if (bulkreq.ocount != NULL) {
		if (copy_to_user(bulkreq.lastip, &inlast,
						sizeof(xfs_ino_t)))
			return -XFS_ERROR(EFAULT);

		if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
			return -XFS_ERROR(EFAULT);
	}

	return 0;
}


typedef struct compat_xfs_fsop_handlereq {
	__u32		fd;		/* fd for FD_TO_HANDLE		*/
	compat_uptr_t	path;		/* user pathname		*/
	__u32		oflags;		/* open flags			*/
	compat_uptr_t	ihandle;	/* user supplied handle		*/
	__u32		ihandlen;	/* user supplied length		*/
	compat_uptr_t	ohandle;	/* user buffer for handle	*/
	compat_uptr_t	ohandlen;	/* user buffer length		*/
} compat_xfs_fsop_handlereq_t;

#define XFS_IOC_PATH_TO_FSHANDLE_32 \
	_IOWR('X', 104, struct compat_xfs_fsop_handlereq)
#define XFS_IOC_PATH_TO_HANDLE_32 \
	_IOWR('X', 105, struct compat_xfs_fsop_handlereq)
#define XFS_IOC_FD_TO_HANDLE_32 \
	_IOWR('X', 106, struct compat_xfs_fsop_handlereq)
#define XFS_IOC_OPEN_BY_HANDLE_32 \
	_IOWR('X', 107, struct compat_xfs_fsop_handlereq)
#define XFS_IOC_READLINK_BY_HANDLE_32 \
	_IOWR('X', 108, struct compat_xfs_fsop_handlereq)

STATIC unsigned long xfs_ioctl32_fshandle(unsigned long arg)
{
	compat_xfs_fsop_handlereq_t __user *p32 = (void __user *)arg;
	xfs_fsop_handlereq_t __user *p = compat_alloc_user_space(sizeof(*p));
	u32 addr;

	if (copy_in_user(&p->fd, &p32->fd, sizeof(__u32)) ||
	    get_user(addr, &p32->path) ||
	    put_user(compat_ptr(addr), &p->path) ||
	    copy_in_user(&p->oflags, &p32->oflags, sizeof(__u32)) ||
	    get_user(addr, &p32->ihandle) ||
	    put_user(compat_ptr(addr), &p->ihandle) ||
	    copy_in_user(&p->ihandlen, &p32->ihandlen, sizeof(__u32)) ||
	    get_user(addr, &p32->ohandle) ||
	    put_user(compat_ptr(addr), &p->ohandle) ||
	    get_user(addr, &p32->ohandlen) ||
	    put_user(compat_ptr(addr), &p->ohandlen))
		return -EFAULT;

	return (unsigned long)p;
}


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_FSSETDM_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;

#endif
	case XFS_IOC_FSBULKSTAT_32:
	case XFS_IOC_FSBULKSTAT_SINGLE_32:
	case XFS_IOC_FSINUMBERS_32:
		cmd = _NATIVE_IOC(cmd, struct xfs_fsop_bulkreq);
		return xfs_ioc_bulkstat_compat(XFS_BHVTOI(VNHEAD(vp))->i_mount,
				cmd, (void*)arg);
	case XFS_IOC_FD_TO_HANDLE_32:
	case XFS_IOC_PATH_TO_HANDLE_32:
	case XFS_IOC_PATH_TO_FSHANDLE_32:
	case XFS_IOC_OPEN_BY_HANDLE_32:
	case XFS_IOC_READLINK_BY_HANDLE_32:
		arg = xfs_ioctl32_fshandle(arg);
		cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
		break;
	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	25	#include "xfs.h"
1da177e4	26	#include "xfs_fs.h"
faa63e95 MM	27	#include "xfs_bit.h"
	28	#include "xfs_log.h"
	29	#include "xfs_inum.h"
	30	#include "xfs_trans.h"
	31	#include "xfs_sb.h"
	32	#include "xfs_ag.h"
	33	#include "xfs_dir2.h"
	34	#include "xfs_dmapi.h"
	35	#include "xfs_mount.h"
	36	#include "xfs_bmap_btree.h"
	37	#include "xfs_attr_sf.h"
	38	#include "xfs_dir2_sf.h"
1da177e4 LT	39	#include "xfs_vfs.h"
1da177e4 LT	40	#include "xfs_vnode.h"
faa63e95 MM	41	#include "xfs_dinode.h"
	42	#include "xfs_inode.h"
	43	#include "xfs_itable.h"
	44	#include "xfs_error.h"
1da177e4 LT	45	#include "xfs_dfrag.h"
1da177e4 LT	46
526c420c ES	47	#define _NATIVE_IOC(cmd, type) \
	48	_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
	49
1da177e4 LT	50	#if defined(CONFIG_IA64) \|\| defined(CONFIG_X86_64)
1da177e4 LT	51	#define BROKEN_X86_ALIGNMENT
faa63e95	52	#define _PACKED __attribute__((packed))
526c420c ES	53	/* on ia32 l_start is on a 32-bit boundary */
	54	typedef struct xfs_flock64_32 {
	55	__s16 l_type;
	56	__s16 l_whence;
	57	__s64 l_start __attribute__((packed));
	58	/* len == 0 means until end of file */
	59	__s64 l_len __attribute__((packed));
	60	__s32 l_sysid;
	61	__u32 l_pid;
	62	__s32 l_pad[4]; /* reserve area */
	63	} xfs_flock64_32_t;
	64
	65	#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
	66	#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
	67	#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
	68	#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
	69	#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
	70	#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
	71	#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
	72	#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
	73
	74	/* just account for different alignment */
	75	STATIC unsigned long
	76	xfs_ioctl32_flock(
	77	unsigned long arg)
	78	{
	79	xfs_flock64_32_t __user p32 = (void __user )arg;
	80	xfs_flock64_t __user p = compat_alloc_user_space(sizeof(p));
	81
	82	if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) \|\|
	83	copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) \|\|
	84	copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) \|\|
	85	copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) \|\|
	86	copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) \|\|
	87	copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) \|\|
	88	copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
	89	return -EFAULT;
e0edd596	90
526c420c ES	91	return (unsigned long)p;
	92	}
	93
547e00c3 MM	94	typedef struct compat_xfs_fsop_geom_v1 {
	95	__u32 blocksize; /* filesystem (data) block size */
	96	__u32 rtextsize; /* realtime extent size */
	97	__u32 agblocks; /* fsblocks in an AG */
	98	__u32 agcount; /* number of allocation groups */
	99	__u32 logblocks; /* fsblocks in the log */
	100	__u32 sectsize; /* (data) sector size, bytes */
	101	__u32 inodesize; /* inode size in bytes */
	102	__u32 imaxpct; /* max allowed inode space(%) */
	103	__u64 datablocks; /* fsblocks in data subvolume */
	104	__u64 rtblocks; /* fsblocks in realtime subvol */
	105	__u64 rtextents; /* rt extents in realtime subvol*/
	106	__u64 logstart; /* starting fsblock of the log */
	107	unsigned char uuid[16]; /* unique id of the filesystem */
	108	__u32 sunit; /* stripe unit, fsblocks */
	109	__u32 swidth; /* stripe width, fsblocks */
	110	__s32 version; /* structure version */
	111	__u32 flags; /* superblock version flags */
	112	__u32 logsectsize; /* log sector size, bytes */
	113	__u32 rtsectsize; /* realtime sector size, bytes */
	114	__u32 dirblocksize; /* directory block size, bytes */
	115	} __attribute__((packed)) compat_xfs_fsop_geom_v1_t;
	116
	117	#define XFS_IOC_FSGEOMETRY_V1_32 \
	118	_IOR ('X', 100, struct compat_xfs_fsop_geom_v1)
	119
	120	STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg)
	121	{
	122	compat_xfs_fsop_geom_v1_t __user p32 = (void __user )arg;
	123	xfs_fsop_geom_v1_t __user p = compat_alloc_user_space(sizeof(p));
	124
	125	if (copy_in_user(p, p32, sizeof(*p32)))
	126	return -EFAULT;
	127	return (unsigned long)p;
	128	}
	129
faa63e95 MM	130	typedef struct compat_xfs_inogrp {
	131	__u64 xi_startino; /* starting inode number */
	132	__s32 xi_alloccount; /* # bits set in allocmask */
	133	__u64 xi_allocmask; /* mask of allocated inodes */
	134	} __attribute__((packed)) compat_xfs_inogrp_t;
	135
	136	STATIC int xfs_inumbers_fmt_compat(
	137	void __user *ubuffer,
	138	const xfs_inogrp_t *buffer,
	139	long count,
	140	long *written)
	141	{
	142	compat_xfs_inogrp_t *p32 = ubuffer;
	143	long i;
	144
	145	for (i = 0; i < count; i++) {
	146	if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) \|\|
	147	put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) \|\|
	148	put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
	149	return -EFAULT;
	150	}
	151	written = count sizeof(*p32);
	152	return 0;
	153	}
	154
1da177e4 LT	155	#else
1da177e4 LT	156
faa63e95 MM	157	#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
	158	#define _PACKED
	159
	160	#endif
	161
	162	/* XFS_IOC_FSBULKSTAT and friends */
	163
	164	typedef struct compat_xfs_bstime {
	165	__s32 tv_sec; /* seconds */
	166	__s32 tv_nsec; /* and nanoseconds */
	167	} compat_xfs_bstime_t;
	168
	169	STATIC int xfs_bstime_store_compat(
	170	compat_xfs_bstime_t __user *p32,
	171	const xfs_bstime_t *p)
	172	{
	173	__s32 sec32;
	174
	175	sec32 = p->tv_sec;
	176	if (put_user(sec32, &p32->tv_sec) \|\|
	177	put_user(p->tv_nsec, &p32->tv_nsec))
	178	return -EFAULT;
	179	return 0;
	180	}
	181
	182	typedef struct compat_xfs_bstat {
	183	__u64 bs_ino; /* inode number */
	184	__u16 bs_mode; /* type and mode */
	185	__u16 bs_nlink; /* number of links */
	186	__u32 bs_uid; /* user id */
	187	__u32 bs_gid; /* group id */
	188	__u32 bs_rdev; /* device value */
	189	__s32 bs_blksize; /* block size */
	190	__s64 bs_size; /* file size */
	191	compat_xfs_bstime_t bs_atime; /* access time */
	192	compat_xfs_bstime_t bs_mtime; /* modify time */
	193	compat_xfs_bstime_t bs_ctime; /* inode change time */
	194	int64_t bs_blocks; /* number of blocks */
	195	__u32 bs_xflags; /* extended flags */
	196	__s32 bs_extsize; /* extent size */
	197	__s32 bs_extents; /* number of extents */
	198	__u32 bs_gen; /* generation count */
	199	__u16 bs_projid; /* project id */
	200	unsigned char bs_pad[14]; /* pad space, unused */
	201	__u32 bs_dmevmask; /* DMIG event mask */
	202	__u16 bs_dmstate; /* DMIG state info */
	203	__u16 bs_aextents; /* attribute number of extents */
	204	} _PACKED compat_xfs_bstat_t;
	205
	206	STATIC int xfs_bulkstat_one_fmt_compat(
	207	void __user *ubuffer,
	208	const xfs_bstat_t *buffer)
	209	{
	210	compat_xfs_bstat_t __user *p32 = ubuffer;
	211
	212	if (put_user(buffer->bs_ino, &p32->bs_ino) \|\|
	213	put_user(buffer->bs_mode, &p32->bs_mode) \|\|
	214	put_user(buffer->bs_nlink, &p32->bs_nlink) \|\|
	215	put_user(buffer->bs_uid, &p32->bs_uid) \|\|
	216	put_user(buffer->bs_gid, &p32->bs_gid) \|\|
	217	put_user(buffer->bs_rdev, &p32->bs_rdev) \|\|
	218	put_user(buffer->bs_blksize, &p32->bs_blksize) \|\|
	219	put_user(buffer->bs_size, &p32->bs_size) \|\|
	220	xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) \|\|
221	xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) \|\|
222	xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) \|\|
223	put_user(buffer->bs_blocks, &p32->bs_blocks) \|\|
224	put_user(buffer->bs_xflags, &p32->bs_xflags) \|\|
225	put_user(buffer->bs_extsize, &p32->bs_extsize) \|\|
226	put_user(buffer->bs_extents, &p32->bs_extents) \|\|
227	put_user(buffer->bs_gen, &p32->bs_gen) \|\|
228	put_user(buffer->bs_projid, &p32->bs_projid) \|\|
229	put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) \|\|
230	put_user(buffer->bs_dmstate, &p32->bs_dmstate) \|\|
231	put_user(buffer->bs_aextents, &p32->bs_aextents))
232	return -EFAULT;
233	return sizeof(*p32);
234	}
235
236
237
238	typedef struct compat_xfs_fsop_bulkreq {
1da177e4 LT	239	compat_uptr_t lastip; /* last inode # pointer */
	240	__s32 icount; /* count of entries in buffer */
	241	compat_uptr_t ubuffer; /* user buffer for inode desc. */
faa63e95 MM	242	compat_uptr_t ocount; /* output count pointer */
faa63e95 MM	243	} compat_xfs_fsop_bulkreq_t;
1da177e4	244
faa63e95 MM	245	#define XFS_IOC_FSBULKSTAT_32 \
	246	_IOWR('X', 101, struct compat_xfs_fsop_bulkreq)
	247	#define XFS_IOC_FSBULKSTAT_SINGLE_32 \
	248	_IOWR('X', 102, struct compat_xfs_fsop_bulkreq)
	249	#define XFS_IOC_FSINUMBERS_32 \
	250	_IOWR('X', 103, struct compat_xfs_fsop_bulkreq)
	251
	252	/* copied from xfs_ioctl.c */
	253	STATIC int
	254	xfs_ioc_bulkstat_compat(
	255	xfs_mount_t *mp,
	256	unsigned int cmd,
	257	void __user *arg)
1da177e4	258	{
faa63e95	259	compat_xfs_fsop_bulkreq_t __user p32 = (void __user )arg;
1da177e4	260	u32 addr;
faa63e95 MM	261	xfs_fsop_bulkreq_t bulkreq;
	262	int count; /* # of records returned */
	263	xfs_ino_t inlast; /* last inode number */
	264	int done;
	265	int error;
	266
	267	/* done = 1 if there are more stats to get and if bulkstat */
	268	/* should be called again (unused here, but used in dmapi) */
1da177e4	269
faa63e95 MM	270	if (!capable(CAP_SYS_ADMIN))
	271	return -EPERM;
	272
	273	if (XFS_FORCED_SHUTDOWN(mp))
	274	return -XFS_ERROR(EIO);
	275
	276	if (get_user(addr, &p32->lastip))
	277	return -EFAULT;
	278	bulkreq.lastip = compat_ptr(addr);
	279	if (get_user(bulkreq.icount, &p32->icount) \|\|
	280	get_user(addr, &p32->ubuffer))
1da177e4	281	return -EFAULT;
faa63e95 MM	282	bulkreq.ubuffer = compat_ptr(addr);
	283	if (get_user(addr, &p32->ocount))
	284	return -EFAULT;
	285	bulkreq.ocount = compat_ptr(addr);
1da177e4	286
faa63e95 MM	287	if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
	288	return -XFS_ERROR(EFAULT);
	289
	290	if ((count = bulkreq.icount) <= 0)
	291	return -XFS_ERROR(EINVAL);
	292
	293	if (cmd == XFS_IOC_FSINUMBERS)
	294	error = xfs_inumbers(mp, &inlast, &count,
	295	bulkreq.ubuffer, xfs_inumbers_fmt_compat);
	296	else {
	297	/* declare a var to get a warning in case the type changes */
	298	bulkstat_one_fmt_pf formatter = xfs_bulkstat_one_fmt_compat;
	299	error = xfs_bulkstat(mp, &inlast, &count,
	300	xfs_bulkstat_one, formatter,
	301	sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
	302	BULKSTAT_FG_QUICK, &done);
	303	}
	304	if (error)
	305	return -error;
	306
	307	if (bulkreq.ocount != NULL) {
	308	if (copy_to_user(bulkreq.lastip, &inlast,
	309	sizeof(xfs_ino_t)))
	310	return -XFS_ERROR(EFAULT);
	311
	312	if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
	313	return -XFS_ERROR(EFAULT);
	314	}
	315
	316	return 0;
1da177e4	317	}
faa63e95 MM	318
faa63e95 MM	319
1da177e4	320
1fa503df MM	321	typedef struct compat_xfs_fsop_handlereq {
	322	__u32 fd; /* fd for FD_TO_HANDLE */
	323	compat_uptr_t path; /* user pathname */
	324	__u32 oflags; /* open flags */
	325	compat_uptr_t ihandle; /* user supplied handle */
	326	__u32 ihandlen; /* user supplied length */
	327	compat_uptr_t ohandle; /* user buffer for handle */
	328	compat_uptr_t ohandlen; /* user buffer length */
	329	} compat_xfs_fsop_handlereq_t;
	330
	331	#define XFS_IOC_PATH_TO_FSHANDLE_32 \
	332	_IOWR('X', 104, struct compat_xfs_fsop_handlereq)
	333	#define XFS_IOC_PATH_TO_HANDLE_32 \
	334	_IOWR('X', 105, struct compat_xfs_fsop_handlereq)
	335	#define XFS_IOC_FD_TO_HANDLE_32 \
	336	_IOWR('X', 106, struct compat_xfs_fsop_handlereq)
	337	#define XFS_IOC_OPEN_BY_HANDLE_32 \
	338	_IOWR('X', 107, struct compat_xfs_fsop_handlereq)
	339	#define XFS_IOC_READLINK_BY_HANDLE_32 \
	340	_IOWR('X', 108, struct compat_xfs_fsop_handlereq)
	341
	342	STATIC unsigned long xfs_ioctl32_fshandle(unsigned long arg)
	343	{
	344	compat_xfs_fsop_handlereq_t __user p32 = (void __user )arg;
	345	xfs_fsop_handlereq_t __user p = compat_alloc_user_space(sizeof(p));
	346	u32 addr;
	347
	348	if (copy_in_user(&p->fd, &p32->fd, sizeof(__u32)) \|\|
	349	get_user(addr, &p32->path) \|\|
	350	put_user(compat_ptr(addr), &p->path) \|\|
	351	copy_in_user(&p->oflags, &p32->oflags, sizeof(__u32)) \|\|
	352	get_user(addr, &p32->ihandle) \|\|
	353	put_user(compat_ptr(addr), &p->ihandle) \|\|
	354	copy_in_user(&p->ihandlen, &p32->ihandlen, sizeof(__u32)) \|\|
	355	get_user(addr, &p32->ohandle) \|\|
	356	put_user(compat_ptr(addr), &p->ohandle) \|\|
	357	get_user(addr, &p32->ohandlen) \|\|
	358	put_user(compat_ptr(addr), &p->ohandlen))
	359	return -EFAULT;
	360
	361	return (unsigned long)p;
	362	}
	363
	364
d3870398	365	STATIC long
e0edd596 NS	366	xfs_compat_ioctl(
	367	int mode,
	368	struct file *file,
	369	unsigned cmd,
	370	unsigned long arg)
1da177e4	371	{
e678fb0d	372	struct inode *inode = file->f_path.dentry->d_inode;
67fcaa73	373	bhv_vnode_t *vp = vn_from_inode(inode);
1da177e4	374	int error;
1da177e4 LT	375
	376	switch (cmd) {
	377	case XFS_IOC_DIOINFO:
1da177e4 LT	378	case XFS_IOC_FSGEOMETRY:
	379	case XFS_IOC_GETVERSION:
	380	case XFS_IOC_GETXFLAGS:
	381	case XFS_IOC_SETXFLAGS:
	382	case XFS_IOC_FSGETXATTR:
	383	case XFS_IOC_FSSETXATTR:
	384	case XFS_IOC_FSGETXATTRA:
	385	case XFS_IOC_FSSETDM:
	386	case XFS_IOC_GETBMAP:
	387	case XFS_IOC_GETBMAPA:
	388	case XFS_IOC_GETBMAPX:
	389	/* not handled
1da177e4	390	case XFS_IOC_FSSETDM_BY_HANDLE:
1da177e4 LT	391	case XFS_IOC_ATTRLIST_BY_HANDLE:
	392	case XFS_IOC_ATTRMULTI_BY_HANDLE:
	393	*/
	394	case XFS_IOC_FSCOUNTS:
	395	case XFS_IOC_SET_RESBLKS:
	396	case XFS_IOC_GET_RESBLKS:
	397	case XFS_IOC_FSGROWFSDATA:
	398	case XFS_IOC_FSGROWFSLOG:
	399	case XFS_IOC_FSGROWFSRT:
	400	case XFS_IOC_FREEZE:
	401	case XFS_IOC_THAW:
	402	case XFS_IOC_GOINGDOWN:
	403	case XFS_IOC_ERROR_INJECTION:
	404	case XFS_IOC_ERROR_CLEARALL:
	405	break;
	406
526c420c ES	407	#ifdef BROKEN_X86_ALIGNMENT
	408	/* xfs_flock_t has wrong u32 vs u64 alignment */
	409	case XFS_IOC_ALLOCSP_32:
	410	case XFS_IOC_FREESP_32:
	411	case XFS_IOC_ALLOCSP64_32:
	412	case XFS_IOC_FREESP64_32:
	413	case XFS_IOC_RESVSP_32:
	414	case XFS_IOC_UNRESVSP_32:
	415	case XFS_IOC_RESVSP64_32:
	416	case XFS_IOC_UNRESVSP64_32:
	417	arg = xfs_ioctl32_flock(arg);
	418	cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
	419	break;
547e00c3 MM	420	case XFS_IOC_FSGEOMETRY_V1_32:
	421	arg = xfs_ioctl32_geom_v1(arg);
	422	cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1);
	423	break;
526c420c ES	424
526c420c ES	425	#else /* These are handled fine if no alignment issues */
1da177e4 LT	426	case XFS_IOC_ALLOCSP:
	427	case XFS_IOC_FREESP:
	428	case XFS_IOC_RESVSP:
	429	case XFS_IOC_UNRESVSP:
	430	case XFS_IOC_ALLOCSP64:
	431	case XFS_IOC_FREESP64:
	432	case XFS_IOC_RESVSP64:
	433	case XFS_IOC_UNRESVSP64:
547e00c3	434	case XFS_IOC_FSGEOMETRY_V1:
526c420c ES	435	break;
	436
	437	/* xfs_bstat_t still has wrong u32 vs u64 alignment */
1da177e4 LT	438	case XFS_IOC_SWAPEXT:
	439	break;
	440
1da177e4	441	#endif
faa63e95 MM	442	case XFS_IOC_FSBULKSTAT_32:
	443	case XFS_IOC_FSBULKSTAT_SINGLE_32:
	444	case XFS_IOC_FSINUMBERS_32:
	445	cmd = _NATIVE_IOC(cmd, struct xfs_fsop_bulkreq);
	446	return xfs_ioc_bulkstat_compat(XFS_BHVTOI(VNHEAD(vp))->i_mount,
	447	cmd, (void*)arg);
1fa503df MM	448	case XFS_IOC_FD_TO_HANDLE_32:
	449	case XFS_IOC_PATH_TO_HANDLE_32:
	450	case XFS_IOC_PATH_TO_FSHANDLE_32:
	451	case XFS_IOC_OPEN_BY_HANDLE_32:
	452	case XFS_IOC_READLINK_BY_HANDLE_32:
	453	arg = xfs_ioctl32_fshandle(arg);
	454	cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
	455	break;
1da177e4 LT	456	default:
	457	return -ENOIOCTLCMD;
	458	}
	459
67fcaa73	460	error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg);
1da177e4 LT	461	VMODIFY(vp);
	462
	463	return error;
	464	}
	465
d3870398	466	long
a50cd269	467	xfs_file_compat_ioctl(
e0edd596	468	struct file *file,
d3870398 NS	469	unsigned cmd,
d3870398 NS	470	unsigned long arg)
1da177e4	471	{
e0edd596	472	return xfs_compat_ioctl(0, file, cmd, arg);
1da177e4 LT	473	}
1da177e4 LT	474
d3870398	475	long
a50cd269	476	xfs_file_compat_invis_ioctl(
e0edd596	477	struct file *file,
d3870398 NS	478	unsigned cmd,
d3870398 NS	479	unsigned long arg)
1da177e4	480	{
e0edd596	481	return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
1da177e4	482	}