
This makes the c file less cluttered and a bit more readable. Consistently name the ioctl number macros with "_32" and the compatibility stuctures with "_compat." Rename the helpers which simply copy in the arg with "_copyin" for easy identification. Finally, for a few of the existing helpers, modify them so that they directly call the native ioctl helper after userspace argument fixup. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
358 lines
9.7 KiB
C
358 lines
9.7 KiB
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_vnode.h"
|
|
#include "xfs_dinode.h"
|
|
#include "xfs_inode.h"
|
|
#include "xfs_itable.h"
|
|
#include "xfs_error.h"
|
|
#include "xfs_dfrag.h"
|
|
#include "xfs_vnodeops.h"
|
|
#include "xfs_ioctl32.h"
|
|
|
|
#define _NATIVE_IOC(cmd, type) \
|
|
_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
|
|
|
|
#ifdef BROKEN_X86_ALIGNMENT
|
|
STATIC unsigned long
|
|
xfs_ioctl32_flock(
|
|
unsigned long arg)
|
|
{
|
|
compat_xfs_flock64_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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
STATIC int xfs_inumbers_fmt_compat(
|
|
void __user *ubuffer,
|
|
const xfs_inogrp_t *buffer,
|
|
long count,
|
|
long *written)
|
|
{
|
|
compat_xfs_inogrp_t __user *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
|
|
#endif
|
|
|
|
/* XFS_IOC_FSBULKSTAT and friends */
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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 (bulkreq.ubuffer == NULL)
|
|
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;
|
|
}
|
|
|
|
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;
|
|
int error;
|
|
|
|
switch (cmd) {
|
|
case XFS_IOC_DIOINFO:
|
|
case XFS_IOC_FSGEOMETRY:
|
|
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;
|
|
|
|
case XFS_IOC_GETXFLAGS_32:
|
|
case XFS_IOC_SETXFLAGS_32:
|
|
case XFS_IOC_GETVERSION_32:
|
|
cmd = _NATIVE_IOC(cmd, long);
|
|
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_I(inode)->i_mount,
|
|
cmd, (void __user*)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 = xfs_ioctl(XFS_I(inode), file, mode, cmd, (void __user *)arg);
|
|
xfs_iflags_set(XFS_I(inode), XFS_IMODIFIED);
|
|
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);
|
|
}
|