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517 lines
14 KiB
517 lines
14 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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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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#include <linux/mount.h> |
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#include <linux/fsmap.h> |
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#include "xfs.h" |
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#include "xfs_fs.h" |
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#include "xfs_shared.h" |
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#include "xfs_format.h" |
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#include "xfs_log_format.h" |
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#include "xfs_trans_resv.h" |
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#include "xfs_mount.h" |
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#include "xfs_inode.h" |
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#include "xfs_iwalk.h" |
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#include "xfs_itable.h" |
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#include "xfs_fsops.h" |
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#include "xfs_rtalloc.h" |
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#include "xfs_da_format.h" |
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#include "xfs_da_btree.h" |
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#include "xfs_attr.h" |
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#include "xfs_ioctl.h" |
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#include "xfs_ioctl32.h" |
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#include "xfs_trace.h" |
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#include "xfs_sb.h" |
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|
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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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|
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#ifdef BROKEN_X86_ALIGNMENT |
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STATIC int |
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xfs_compat_ioc_fsgeometry_v1( |
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struct xfs_mount *mp, |
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compat_xfs_fsop_geom_v1_t __user *arg32) |
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{ |
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struct xfs_fsop_geom fsgeo; |
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|
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xfs_fs_geometry(mp, &fsgeo, 3); |
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/* The 32-bit variant simply has some padding at the end */ |
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if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) |
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return -EFAULT; |
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return 0; |
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} |
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STATIC int |
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xfs_compat_growfs_data_copyin( |
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struct xfs_growfs_data *in, |
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compat_xfs_growfs_data_t __user *arg32) |
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{ |
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if (get_user(in->newblocks, &arg32->newblocks) || |
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get_user(in->imaxpct, &arg32->imaxpct)) |
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return -EFAULT; |
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return 0; |
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} |
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|
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STATIC int |
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xfs_compat_growfs_rt_copyin( |
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struct xfs_growfs_rt *in, |
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compat_xfs_growfs_rt_t __user *arg32) |
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{ |
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if (get_user(in->newblocks, &arg32->newblocks) || |
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get_user(in->extsize, &arg32->extsize)) |
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return -EFAULT; |
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return 0; |
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} |
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STATIC int |
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xfs_fsinumbers_fmt_compat( |
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struct xfs_ibulk *breq, |
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const struct xfs_inumbers *ig) |
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{ |
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struct compat_xfs_inogrp __user *p32 = breq->ubuffer; |
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struct xfs_inogrp ig1; |
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struct xfs_inogrp *igrp = &ig1; |
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xfs_inumbers_to_inogrp(&ig1, ig); |
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|
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if (put_user(igrp->xi_startino, &p32->xi_startino) || |
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put_user(igrp->xi_alloccount, &p32->xi_alloccount) || |
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put_user(igrp->xi_allocmask, &p32->xi_allocmask)) |
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return -EFAULT; |
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return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp)); |
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} |
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#else |
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#define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt |
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#endif /* BROKEN_X86_ALIGNMENT */ |
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STATIC int |
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xfs_ioctl32_bstime_copyin( |
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xfs_bstime_t *bstime, |
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compat_xfs_bstime_t __user *bstime32) |
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{ |
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old_time32_t sec32; /* tv_sec differs on 64 vs. 32 */ |
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|
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if (get_user(sec32, &bstime32->tv_sec) || |
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get_user(bstime->tv_nsec, &bstime32->tv_nsec)) |
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return -EFAULT; |
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bstime->tv_sec = sec32; |
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return 0; |
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} |
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|
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/* |
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* struct xfs_bstat has differing alignment on intel, & bstime_t sizes |
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* everywhere |
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*/ |
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STATIC int |
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xfs_ioctl32_bstat_copyin( |
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struct xfs_bstat *bstat, |
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struct compat_xfs_bstat __user *bstat32) |
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{ |
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if (get_user(bstat->bs_ino, &bstat32->bs_ino) || |
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get_user(bstat->bs_mode, &bstat32->bs_mode) || |
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get_user(bstat->bs_nlink, &bstat32->bs_nlink) || |
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get_user(bstat->bs_uid, &bstat32->bs_uid) || |
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get_user(bstat->bs_gid, &bstat32->bs_gid) || |
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get_user(bstat->bs_rdev, &bstat32->bs_rdev) || |
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get_user(bstat->bs_blksize, &bstat32->bs_blksize) || |
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get_user(bstat->bs_size, &bstat32->bs_size) || |
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xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || |
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xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || |
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xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || |
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get_user(bstat->bs_blocks, &bstat32->bs_size) || |
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get_user(bstat->bs_xflags, &bstat32->bs_size) || |
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get_user(bstat->bs_extsize, &bstat32->bs_extsize) || |
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get_user(bstat->bs_extents, &bstat32->bs_extents) || |
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get_user(bstat->bs_gen, &bstat32->bs_gen) || |
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get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || |
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get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || |
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get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) || |
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get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || |
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get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || |
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get_user(bstat->bs_aextents, &bstat32->bs_aextents)) |
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return -EFAULT; |
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return 0; |
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} |
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|
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/* XFS_IOC_FSBULKSTAT and friends */ |
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STATIC int |
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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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/* Return 0 on success or positive error (to xfs_bulkstat()) */ |
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STATIC int |
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xfs_fsbulkstat_one_fmt_compat( |
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struct xfs_ibulk *breq, |
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const struct xfs_bulkstat *bstat) |
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{ |
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struct compat_xfs_bstat __user *p32 = breq->ubuffer; |
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struct xfs_bstat bs1; |
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struct xfs_bstat *buffer = &bs1; |
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xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat); |
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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_projid_hi, &p32->bs_projid_hi) || |
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put_user(buffer->bs_forkoff, &p32->bs_forkoff) || |
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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 xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat)); |
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} |
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/* copied from xfs_ioctl.c */ |
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STATIC int |
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xfs_compat_ioc_fsbulkstat( |
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struct file *file, |
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unsigned int cmd, |
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struct compat_xfs_fsop_bulkreq __user *p32) |
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{ |
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struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount; |
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u32 addr; |
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struct xfs_fsop_bulkreq bulkreq; |
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struct xfs_ibulk breq = { |
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.mp = mp, |
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.mnt_userns = file_mnt_user_ns(file), |
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.ocount = 0, |
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}; |
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xfs_ino_t lastino; |
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int error; |
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/* |
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* Output structure handling functions. Depending on the command, |
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* either the xfs_bstat and xfs_inogrp structures are written out |
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* to userpace memory via bulkreq.ubuffer. Normally the compat |
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* functions and structure size are the correct ones to use ... |
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*/ |
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inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat; |
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bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat; |
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#ifdef CONFIG_X86_X32_ABI |
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if (in_x32_syscall()) { |
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/* |
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* ... but on x32 the input xfs_fsop_bulkreq has pointers |
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* which must be handled in the "compat" (32-bit) way, while |
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* the xfs_bstat and xfs_inogrp structures follow native 64- |
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* bit layout convention. So adjust accordingly, otherwise |
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* the data written out in compat layout will not match what |
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* x32 userspace expects. |
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*/ |
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inumbers_func = xfs_fsinumbers_fmt; |
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bs_one_func = xfs_fsbulkstat_one_fmt; |
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} |
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#endif |
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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_is_shutdown(mp)) |
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return -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(&lastino, bulkreq.lastip, sizeof(__s64))) |
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return -EFAULT; |
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if (bulkreq.icount <= 0) |
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return -EINVAL; |
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if (bulkreq.ubuffer == NULL) |
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return -EINVAL; |
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breq.ubuffer = bulkreq.ubuffer; |
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breq.icount = bulkreq.icount; |
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/* |
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* FSBULKSTAT_SINGLE expects that *lastip contains the inode number |
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* that we want to stat. However, FSINUMBERS and FSBULKSTAT expect |
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* that *lastip contains either zero or the number of the last inode to |
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* be examined by the previous call and return results starting with |
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* the next inode after that. The new bulk request back end functions |
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* take the inode to start with, so we have to compute the startino |
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* parameter from lastino to maintain correct function. lastino == 0 |
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* is a special case because it has traditionally meant "first inode |
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* in filesystem". |
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*/ |
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if (cmd == XFS_IOC_FSINUMBERS_32) { |
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breq.startino = lastino ? lastino + 1 : 0; |
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error = xfs_inumbers(&breq, inumbers_func); |
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lastino = breq.startino - 1; |
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} else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { |
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breq.startino = lastino; |
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breq.icount = 1; |
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error = xfs_bulkstat_one(&breq, bs_one_func); |
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lastino = breq.startino; |
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} else if (cmd == XFS_IOC_FSBULKSTAT_32) { |
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breq.startino = lastino ? lastino + 1 : 0; |
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error = xfs_bulkstat(&breq, bs_one_func); |
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lastino = breq.startino - 1; |
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} else { |
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error = -EINVAL; |
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} |
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if (error) |
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return error; |
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if (bulkreq.lastip != NULL && |
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copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t))) |
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return -EFAULT; |
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if (bulkreq.ocount != NULL && |
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copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32))) |
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return -EFAULT; |
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return 0; |
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} |
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STATIC int |
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xfs_compat_handlereq_copyin( |
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xfs_fsop_handlereq_t *hreq, |
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compat_xfs_fsop_handlereq_t __user *arg32) |
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{ |
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compat_xfs_fsop_handlereq_t hreq32; |
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if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) |
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return -EFAULT; |
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hreq->fd = hreq32.fd; |
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hreq->path = compat_ptr(hreq32.path); |
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hreq->oflags = hreq32.oflags; |
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hreq->ihandle = compat_ptr(hreq32.ihandle); |
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hreq->ihandlen = hreq32.ihandlen; |
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hreq->ohandle = compat_ptr(hreq32.ohandle); |
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hreq->ohandlen = compat_ptr(hreq32.ohandlen); |
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return 0; |
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} |
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STATIC struct dentry * |
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xfs_compat_handlereq_to_dentry( |
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struct file *parfilp, |
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compat_xfs_fsop_handlereq_t *hreq) |
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{ |
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return xfs_handle_to_dentry(parfilp, |
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compat_ptr(hreq->ihandle), hreq->ihandlen); |
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} |
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STATIC int |
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xfs_compat_attrlist_by_handle( |
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struct file *parfilp, |
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compat_xfs_fsop_attrlist_handlereq_t __user *p) |
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{ |
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compat_xfs_fsop_attrlist_handlereq_t al_hreq; |
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struct dentry *dentry; |
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int error; |
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if (!capable(CAP_SYS_ADMIN)) |
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return -EPERM; |
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if (copy_from_user(&al_hreq, p, sizeof(al_hreq))) |
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return -EFAULT; |
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dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
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if (IS_ERR(dentry)) |
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return PTR_ERR(dentry); |
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error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)), |
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compat_ptr(al_hreq.buffer), al_hreq.buflen, |
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al_hreq.flags, &p->pos); |
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dput(dentry); |
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return error; |
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} |
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STATIC int |
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xfs_compat_attrmulti_by_handle( |
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struct file *parfilp, |
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void __user *arg) |
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{ |
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int error; |
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compat_xfs_attr_multiop_t *ops; |
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compat_xfs_fsop_attrmulti_handlereq_t am_hreq; |
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struct dentry *dentry; |
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unsigned int i, size; |
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if (!capable(CAP_SYS_ADMIN)) |
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return -EPERM; |
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if (copy_from_user(&am_hreq, arg, |
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sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) |
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return -EFAULT; |
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/* overflow check */ |
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if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) |
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return -E2BIG; |
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dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
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if (IS_ERR(dentry)) |
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return PTR_ERR(dentry); |
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error = -E2BIG; |
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size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); |
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if (!size || size > 16 * PAGE_SIZE) |
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goto out_dput; |
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ops = memdup_user(compat_ptr(am_hreq.ops), size); |
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if (IS_ERR(ops)) { |
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error = PTR_ERR(ops); |
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goto out_dput; |
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} |
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error = 0; |
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for (i = 0; i < am_hreq.opcount; i++) { |
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ops[i].am_error = xfs_ioc_attrmulti_one(parfilp, |
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d_inode(dentry), ops[i].am_opcode, |
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compat_ptr(ops[i].am_attrname), |
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compat_ptr(ops[i].am_attrvalue), |
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&ops[i].am_length, ops[i].am_flags); |
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} |
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|
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if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) |
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error = -EFAULT; |
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kfree(ops); |
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out_dput: |
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dput(dentry); |
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return error; |
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} |
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|
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long |
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xfs_file_compat_ioctl( |
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struct file *filp, |
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unsigned cmd, |
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unsigned long p) |
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{ |
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struct inode *inode = file_inode(filp); |
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struct xfs_inode *ip = XFS_I(inode); |
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void __user *arg = compat_ptr(p); |
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int error; |
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|
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trace_xfs_file_compat_ioctl(ip); |
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|
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switch (cmd) { |
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#if defined(BROKEN_X86_ALIGNMENT) |
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case XFS_IOC_FSGEOMETRY_V1_32: |
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return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg); |
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case XFS_IOC_FSGROWFSDATA_32: { |
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struct xfs_growfs_data in; |
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|
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if (xfs_compat_growfs_data_copyin(&in, arg)) |
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return -EFAULT; |
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error = mnt_want_write_file(filp); |
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if (error) |
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return error; |
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error = xfs_growfs_data(ip->i_mount, &in); |
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mnt_drop_write_file(filp); |
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return error; |
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} |
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case XFS_IOC_FSGROWFSRT_32: { |
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struct xfs_growfs_rt in; |
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|
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if (xfs_compat_growfs_rt_copyin(&in, arg)) |
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return -EFAULT; |
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error = mnt_want_write_file(filp); |
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if (error) |
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return error; |
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error = xfs_growfs_rt(ip->i_mount, &in); |
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mnt_drop_write_file(filp); |
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return error; |
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} |
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#endif |
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/* long changes size, but xfs only copiese out 32 bits */ |
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case XFS_IOC_GETVERSION_32: |
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cmd = _NATIVE_IOC(cmd, long); |
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return xfs_file_ioctl(filp, cmd, p); |
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case XFS_IOC_SWAPEXT_32: { |
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struct xfs_swapext sxp; |
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struct compat_xfs_swapext __user *sxu = arg; |
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|
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/* Bulk copy in up to the sx_stat field, then copy bstat */ |
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if (copy_from_user(&sxp, sxu, |
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offsetof(struct xfs_swapext, sx_stat)) || |
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xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) |
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return -EFAULT; |
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error = mnt_want_write_file(filp); |
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if (error) |
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return error; |
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error = xfs_ioc_swapext(&sxp); |
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mnt_drop_write_file(filp); |
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return error; |
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} |
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case XFS_IOC_FSBULKSTAT_32: |
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case XFS_IOC_FSBULKSTAT_SINGLE_32: |
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case XFS_IOC_FSINUMBERS_32: |
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return xfs_compat_ioc_fsbulkstat(filp, cmd, arg); |
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case XFS_IOC_FD_TO_HANDLE_32: |
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case XFS_IOC_PATH_TO_HANDLE_32: |
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case XFS_IOC_PATH_TO_FSHANDLE_32: { |
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struct xfs_fsop_handlereq hreq; |
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|
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if (xfs_compat_handlereq_copyin(&hreq, arg)) |
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return -EFAULT; |
|
cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); |
|
return xfs_find_handle(cmd, &hreq); |
|
} |
|
case XFS_IOC_OPEN_BY_HANDLE_32: { |
|
struct xfs_fsop_handlereq hreq; |
|
|
|
if (xfs_compat_handlereq_copyin(&hreq, arg)) |
|
return -EFAULT; |
|
return xfs_open_by_handle(filp, &hreq); |
|
} |
|
case XFS_IOC_READLINK_BY_HANDLE_32: { |
|
struct xfs_fsop_handlereq hreq; |
|
|
|
if (xfs_compat_handlereq_copyin(&hreq, arg)) |
|
return -EFAULT; |
|
return xfs_readlink_by_handle(filp, &hreq); |
|
} |
|
case XFS_IOC_ATTRLIST_BY_HANDLE_32: |
|
return xfs_compat_attrlist_by_handle(filp, arg); |
|
case XFS_IOC_ATTRMULTI_BY_HANDLE_32: |
|
return xfs_compat_attrmulti_by_handle(filp, arg); |
|
default: |
|
/* try the native version */ |
|
return xfs_file_ioctl(filp, cmd, (unsigned long)arg); |
|
} |
|
}
|
|
|