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![David Chinner](/assets/img/avatar_default.png)
These are mostly locking annotations, marking things static, casts where needed and declaring stuff in header files. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30002a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
488 lines
14 KiB
C
488 lines
14 KiB
C
/*
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* Copyright (c) 2004-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/compat.h>
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#include <linux/init.h>
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#include <linux/ioctl.h>
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#include <linux/syscalls.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <asm/uaccess.h>
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_dir2.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_vfs.h"
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#include "xfs_vnode.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_itable.h"
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#include "xfs_error.h"
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#include "xfs_dfrag.h"
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#include "xfs_vnodeops.h"
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#include "xfs_ioctl32.h"
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#define _NATIVE_IOC(cmd, type) \
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_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
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#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
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#define BROKEN_X86_ALIGNMENT
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#define _PACKED __attribute__((packed))
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/* on ia32 l_start is on a 32-bit boundary */
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typedef struct xfs_flock64_32 {
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__s16 l_type;
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__s16 l_whence;
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__s64 l_start __attribute__((packed));
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/* len == 0 means until end of file */
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__s64 l_len __attribute__((packed));
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__s32 l_sysid;
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__u32 l_pid;
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__s32 l_pad[4]; /* reserve area */
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} xfs_flock64_32_t;
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#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
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#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
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#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
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#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
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#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
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#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
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#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
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#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
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/* just account for different alignment */
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STATIC unsigned long
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xfs_ioctl32_flock(
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unsigned long arg)
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{
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xfs_flock64_32_t __user *p32 = (void __user *)arg;
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xfs_flock64_t __user *p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) ||
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copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) ||
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copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) ||
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copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
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copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
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copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
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copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
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return -EFAULT;
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return (unsigned long)p;
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}
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typedef struct compat_xfs_fsop_geom_v1 {
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__u32 blocksize; /* filesystem (data) block size */
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__u32 rtextsize; /* realtime extent size */
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__u32 agblocks; /* fsblocks in an AG */
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__u32 agcount; /* number of allocation groups */
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__u32 logblocks; /* fsblocks in the log */
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__u32 sectsize; /* (data) sector size, bytes */
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__u32 inodesize; /* inode size in bytes */
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__u32 imaxpct; /* max allowed inode space(%) */
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__u64 datablocks; /* fsblocks in data subvolume */
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__u64 rtblocks; /* fsblocks in realtime subvol */
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__u64 rtextents; /* rt extents in realtime subvol*/
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__u64 logstart; /* starting fsblock of the log */
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unsigned char uuid[16]; /* unique id of the filesystem */
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__u32 sunit; /* stripe unit, fsblocks */
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__u32 swidth; /* stripe width, fsblocks */
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__s32 version; /* structure version */
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__u32 flags; /* superblock version flags */
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__u32 logsectsize; /* log sector size, bytes */
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__u32 rtsectsize; /* realtime sector size, bytes */
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__u32 dirblocksize; /* directory block size, bytes */
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} __attribute__((packed)) compat_xfs_fsop_geom_v1_t;
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#define XFS_IOC_FSGEOMETRY_V1_32 \
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_IOR ('X', 100, struct compat_xfs_fsop_geom_v1)
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STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg)
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{
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compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg;
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xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(p, p32, sizeof(*p32)))
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return -EFAULT;
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return (unsigned long)p;
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}
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typedef struct compat_xfs_inogrp {
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__u64 xi_startino; /* starting inode number */
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__s32 xi_alloccount; /* # bits set in allocmask */
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__u64 xi_allocmask; /* mask of allocated inodes */
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} __attribute__((packed)) compat_xfs_inogrp_t;
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STATIC int xfs_inumbers_fmt_compat(
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void __user *ubuffer,
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const xfs_inogrp_t *buffer,
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long count,
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long *written)
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{
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compat_xfs_inogrp_t __user *p32 = ubuffer;
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long i;
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for (i = 0; i < count; i++) {
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if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
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put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
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put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
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return -EFAULT;
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}
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*written = count * sizeof(*p32);
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return 0;
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}
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#else
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#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
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#define _PACKED
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#endif
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/* XFS_IOC_FSBULKSTAT and friends */
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typedef struct compat_xfs_bstime {
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__s32 tv_sec; /* seconds */
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__s32 tv_nsec; /* and nanoseconds */
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} compat_xfs_bstime_t;
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STATIC int xfs_bstime_store_compat(
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compat_xfs_bstime_t __user *p32,
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const xfs_bstime_t *p)
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{
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__s32 sec32;
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sec32 = p->tv_sec;
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if (put_user(sec32, &p32->tv_sec) ||
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put_user(p->tv_nsec, &p32->tv_nsec))
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return -EFAULT;
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return 0;
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}
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typedef struct compat_xfs_bstat {
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__u64 bs_ino; /* inode number */
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__u16 bs_mode; /* type and mode */
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__u16 bs_nlink; /* number of links */
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__u32 bs_uid; /* user id */
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__u32 bs_gid; /* group id */
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__u32 bs_rdev; /* device value */
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__s32 bs_blksize; /* block size */
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__s64 bs_size; /* file size */
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compat_xfs_bstime_t bs_atime; /* access time */
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compat_xfs_bstime_t bs_mtime; /* modify time */
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compat_xfs_bstime_t bs_ctime; /* inode change time */
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int64_t bs_blocks; /* number of blocks */
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__u32 bs_xflags; /* extended flags */
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__s32 bs_extsize; /* extent size */
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__s32 bs_extents; /* number of extents */
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__u32 bs_gen; /* generation count */
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__u16 bs_projid; /* project id */
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unsigned char bs_pad[14]; /* pad space, unused */
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__u32 bs_dmevmask; /* DMIG event mask */
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__u16 bs_dmstate; /* DMIG state info */
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__u16 bs_aextents; /* attribute number of extents */
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} _PACKED compat_xfs_bstat_t;
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STATIC int xfs_bulkstat_one_fmt_compat(
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void __user *ubuffer,
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const xfs_bstat_t *buffer)
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{
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compat_xfs_bstat_t __user *p32 = ubuffer;
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if (put_user(buffer->bs_ino, &p32->bs_ino) ||
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put_user(buffer->bs_mode, &p32->bs_mode) ||
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put_user(buffer->bs_nlink, &p32->bs_nlink) ||
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put_user(buffer->bs_uid, &p32->bs_uid) ||
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put_user(buffer->bs_gid, &p32->bs_gid) ||
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put_user(buffer->bs_rdev, &p32->bs_rdev) ||
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put_user(buffer->bs_blksize, &p32->bs_blksize) ||
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put_user(buffer->bs_size, &p32->bs_size) ||
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xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
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xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
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xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
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put_user(buffer->bs_blocks, &p32->bs_blocks) ||
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put_user(buffer->bs_xflags, &p32->bs_xflags) ||
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put_user(buffer->bs_extsize, &p32->bs_extsize) ||
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put_user(buffer->bs_extents, &p32->bs_extents) ||
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put_user(buffer->bs_gen, &p32->bs_gen) ||
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put_user(buffer->bs_projid, &p32->bs_projid) ||
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put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
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put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
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put_user(buffer->bs_aextents, &p32->bs_aextents))
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return -EFAULT;
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return sizeof(*p32);
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}
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typedef struct compat_xfs_fsop_bulkreq {
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compat_uptr_t lastip; /* last inode # pointer */
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__s32 icount; /* count of entries in buffer */
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compat_uptr_t ubuffer; /* user buffer for inode desc. */
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compat_uptr_t ocount; /* output count pointer */
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} compat_xfs_fsop_bulkreq_t;
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#define XFS_IOC_FSBULKSTAT_32 \
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_IOWR('X', 101, struct compat_xfs_fsop_bulkreq)
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#define XFS_IOC_FSBULKSTAT_SINGLE_32 \
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_IOWR('X', 102, struct compat_xfs_fsop_bulkreq)
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#define XFS_IOC_FSINUMBERS_32 \
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_IOWR('X', 103, struct compat_xfs_fsop_bulkreq)
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/* copied from xfs_ioctl.c */
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STATIC int
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xfs_ioc_bulkstat_compat(
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xfs_mount_t *mp,
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unsigned int cmd,
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void __user *arg)
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{
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compat_xfs_fsop_bulkreq_t __user *p32 = (void __user *)arg;
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u32 addr;
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xfs_fsop_bulkreq_t bulkreq;
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int count; /* # of records returned */
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xfs_ino_t inlast; /* last inode number */
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int done;
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int error;
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/* done = 1 if there are more stats to get and if bulkstat */
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/* should be called again (unused here, but used in dmapi) */
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (XFS_FORCED_SHUTDOWN(mp))
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return -XFS_ERROR(EIO);
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if (get_user(addr, &p32->lastip))
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return -EFAULT;
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bulkreq.lastip = compat_ptr(addr);
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if (get_user(bulkreq.icount, &p32->icount) ||
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get_user(addr, &p32->ubuffer))
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return -EFAULT;
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bulkreq.ubuffer = compat_ptr(addr);
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if (get_user(addr, &p32->ocount))
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return -EFAULT;
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bulkreq.ocount = compat_ptr(addr);
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if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
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return -XFS_ERROR(EFAULT);
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if ((count = bulkreq.icount) <= 0)
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return -XFS_ERROR(EINVAL);
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if (bulkreq.ubuffer == NULL)
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return -XFS_ERROR(EINVAL);
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if (cmd == XFS_IOC_FSINUMBERS)
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error = xfs_inumbers(mp, &inlast, &count,
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bulkreq.ubuffer, xfs_inumbers_fmt_compat);
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else {
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/* declare a var to get a warning in case the type changes */
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bulkstat_one_fmt_pf formatter = xfs_bulkstat_one_fmt_compat;
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error = xfs_bulkstat(mp, &inlast, &count,
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xfs_bulkstat_one, formatter,
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sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
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BULKSTAT_FG_QUICK, &done);
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}
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if (error)
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return -error;
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if (bulkreq.ocount != NULL) {
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if (copy_to_user(bulkreq.lastip, &inlast,
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sizeof(xfs_ino_t)))
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return -XFS_ERROR(EFAULT);
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if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
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return -XFS_ERROR(EFAULT);
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}
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return 0;
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}
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typedef struct compat_xfs_fsop_handlereq {
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__u32 fd; /* fd for FD_TO_HANDLE */
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compat_uptr_t path; /* user pathname */
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__u32 oflags; /* open flags */
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compat_uptr_t ihandle; /* user supplied handle */
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__u32 ihandlen; /* user supplied length */
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compat_uptr_t ohandle; /* user buffer for handle */
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compat_uptr_t ohandlen; /* user buffer length */
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} compat_xfs_fsop_handlereq_t;
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#define XFS_IOC_PATH_TO_FSHANDLE_32 \
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_IOWR('X', 104, struct compat_xfs_fsop_handlereq)
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#define XFS_IOC_PATH_TO_HANDLE_32 \
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_IOWR('X', 105, struct compat_xfs_fsop_handlereq)
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#define XFS_IOC_FD_TO_HANDLE_32 \
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_IOWR('X', 106, struct compat_xfs_fsop_handlereq)
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#define XFS_IOC_OPEN_BY_HANDLE_32 \
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_IOWR('X', 107, struct compat_xfs_fsop_handlereq)
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#define XFS_IOC_READLINK_BY_HANDLE_32 \
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_IOWR('X', 108, struct compat_xfs_fsop_handlereq)
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STATIC unsigned long xfs_ioctl32_fshandle(unsigned long arg)
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{
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compat_xfs_fsop_handlereq_t __user *p32 = (void __user *)arg;
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xfs_fsop_handlereq_t __user *p = compat_alloc_user_space(sizeof(*p));
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u32 addr;
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if (copy_in_user(&p->fd, &p32->fd, sizeof(__u32)) ||
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get_user(addr, &p32->path) ||
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put_user(compat_ptr(addr), &p->path) ||
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copy_in_user(&p->oflags, &p32->oflags, sizeof(__u32)) ||
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get_user(addr, &p32->ihandle) ||
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put_user(compat_ptr(addr), &p->ihandle) ||
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copy_in_user(&p->ihandlen, &p32->ihandlen, sizeof(__u32)) ||
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get_user(addr, &p32->ohandle) ||
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put_user(compat_ptr(addr), &p->ohandle) ||
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get_user(addr, &p32->ohandlen) ||
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put_user(compat_ptr(addr), &p->ohandlen))
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return -EFAULT;
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return (unsigned long)p;
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}
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STATIC long
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xfs_compat_ioctl(
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int mode,
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struct file *file,
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unsigned cmd,
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unsigned long arg)
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{
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struct inode *inode = file->f_path.dentry->d_inode;
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int error;
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switch (cmd) {
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case XFS_IOC_DIOINFO:
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case XFS_IOC_FSGEOMETRY:
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case XFS_IOC_FSGETXATTR:
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case XFS_IOC_FSSETXATTR:
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case XFS_IOC_FSGETXATTRA:
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case XFS_IOC_FSSETDM:
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case XFS_IOC_GETBMAP:
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case XFS_IOC_GETBMAPA:
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case XFS_IOC_GETBMAPX:
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/* not handled
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case XFS_IOC_FSSETDM_BY_HANDLE:
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case XFS_IOC_ATTRLIST_BY_HANDLE:
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case XFS_IOC_ATTRMULTI_BY_HANDLE:
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*/
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case XFS_IOC_FSCOUNTS:
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case XFS_IOC_SET_RESBLKS:
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case XFS_IOC_GET_RESBLKS:
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case XFS_IOC_FSGROWFSDATA:
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case XFS_IOC_FSGROWFSLOG:
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case XFS_IOC_FSGROWFSRT:
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case XFS_IOC_FREEZE:
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case XFS_IOC_THAW:
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case XFS_IOC_GOINGDOWN:
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case XFS_IOC_ERROR_INJECTION:
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case XFS_IOC_ERROR_CLEARALL:
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break;
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case XFS_IOC32_GETXFLAGS:
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case XFS_IOC32_SETXFLAGS:
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case XFS_IOC32_GETVERSION:
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cmd = _NATIVE_IOC(cmd, long);
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break;
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#ifdef BROKEN_X86_ALIGNMENT
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/* xfs_flock_t has wrong u32 vs u64 alignment */
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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);
|
|
}
|