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	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2004-2005 Silicon Graphics, Inc.
  * All Rights Reserved.
  */
 #include <linux/mount.h>
 #include <linux/fsmap.h>
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_shared.h"
 #include "xfs_format.h"
 #include "xfs_log_format.h"
 #include "xfs_trans_resv.h"
 #include "xfs_mount.h"
 #include "xfs_inode.h"
 #include "xfs_iwalk.h"
 #include "xfs_itable.h"
 #include "xfs_fsops.h"
 #include "xfs_rtalloc.h"
 #include "xfs_da_format.h"
 #include "xfs_da_btree.h"
 #include "xfs_attr.h"
 #include "xfs_ioctl.h"
 #include "xfs_ioctl32.h"
 #include "xfs_trace.h"
 #include "xfs_sb.h"
 
 #define  _NATIVE_IOC(cmd, type) \
       _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
 
 #ifdef BROKEN_X86_ALIGNMENT
 STATIC int
 xfs_compat_ioc_fsgeometry_v1(
     struct xfs_mount      *mp,
     compat_xfs_fsop_geom_v1_t __user *arg32)
 {
     struct xfs_fsop_geom      fsgeo;
 
     xfs_fs_geometry(mp, &fsgeo, 3);
     /* The 32-bit variant simply has some padding at the end */
     if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
         return -EFAULT;
     return 0;
 }
 
 STATIC int
 xfs_compat_growfs_data_copyin(
     struct xfs_growfs_data   *in,
     compat_xfs_growfs_data_t __user *arg32)
 {
     if (get_user(in->newblocks, &arg32->newblocks) ||
         get_user(in->imaxpct,   &arg32->imaxpct))
         return -EFAULT;
     return 0;
 }
 
 STATIC int
 xfs_compat_growfs_rt_copyin(
     struct xfs_growfs_rt     *in,
     compat_xfs_growfs_rt_t  __user *arg32)
 {
     if (get_user(in->newblocks, &arg32->newblocks) ||
         get_user(in->extsize,   &arg32->extsize))
         return -EFAULT;
     return 0;
 }
 
 STATIC int
 xfs_fsinumbers_fmt_compat(
     struct xfs_ibulk        *breq,
     const struct xfs_inumbers   *ig)
 {
     struct compat_xfs_inogrp __user *p32 = breq->ubuffer;
     struct xfs_inogrp       ig1;
     struct xfs_inogrp       *igrp = &ig1;
 
     xfs_inumbers_to_inogrp(&ig1, ig);
 
     if (put_user(igrp->xi_startino,   &p32->xi_startino) ||
         put_user(igrp->xi_alloccount, &p32->xi_alloccount) ||
         put_user(igrp->xi_allocmask,  &p32->xi_allocmask))
         return -EFAULT;
 
     return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp));
 }
 
 #else
 #define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
 #endif  /* BROKEN_X86_ALIGNMENT */
 
 STATIC int
 xfs_ioctl32_bstime_copyin(
     xfs_bstime_t        *bstime,
     compat_xfs_bstime_t __user *bstime32)
 {
     old_time32_t        sec32;  /* tv_sec differs on 64 vs. 32 */
 
     if (get_user(sec32,     &bstime32->tv_sec)  ||
         get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
         return -EFAULT;
     bstime->tv_sec = sec32;
     return 0;
 }
 
 /*
  * struct xfs_bstat has differing alignment on intel, & bstime_t sizes
  * everywhere
  */
 STATIC int
 xfs_ioctl32_bstat_copyin(
     struct xfs_bstat        *bstat,
     struct compat_xfs_bstat __user  *bstat32)
 {
     if (get_user(bstat->bs_ino, &bstat32->bs_ino)   ||
         get_user(bstat->bs_mode,    &bstat32->bs_mode)  ||
         get_user(bstat->bs_nlink,   &bstat32->bs_nlink) ||
         get_user(bstat->bs_uid, &bstat32->bs_uid)   ||
         get_user(bstat->bs_gid, &bstat32->bs_gid)   ||
         get_user(bstat->bs_rdev,    &bstat32->bs_rdev)  ||
         get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
         get_user(bstat->bs_size,    &bstat32->bs_size)  ||
         xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
         xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
         xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
         get_user(bstat->bs_blocks,  &bstat32->bs_size)  ||
         get_user(bstat->bs_xflags,  &bstat32->bs_size)  ||
         get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
         get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
         get_user(bstat->bs_gen, &bstat32->bs_gen)   ||
         get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
         get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
         get_user(bstat->bs_forkoff, &bstat32->bs_forkoff)   ||
         get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
         get_user(bstat->bs_dmstate, &bstat32->bs_dmstate)   ||
         get_user(bstat->bs_aextents, &bstat32->bs_aextents))
         return -EFAULT;
     return 0;
 }
 
 /* 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;
 }
 
 /* Return 0 on success or positive error (to xfs_bulkstat()) */
 STATIC int
 xfs_fsbulkstat_one_fmt_compat(
     struct xfs_ibulk        *breq,
     const struct xfs_bulkstat   *bstat)
 {
     struct compat_xfs_bstat __user  *p32 = breq->ubuffer;
     struct xfs_bstat        bs1;
     struct xfs_bstat        *buffer = &bs1;
 
     xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
 
     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_projid_hi,  &p32->bs_projid_hi) ||
         put_user(buffer->bs_forkoff,  &p32->bs_forkoff) ||
         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 xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
 }
 
 /* copied from xfs_ioctl.c */
 STATIC int
 xfs_compat_ioc_fsbulkstat(
     struct file     *file,
     unsigned int          cmd,
     struct compat_xfs_fsop_bulkreq __user *p32)
 {
     struct xfs_mount    *mp = XFS_I(file_inode(file))->i_mount;
     u32         addr;
     struct xfs_fsop_bulkreq bulkreq;
     struct xfs_ibulk    breq = {
         .mp     = mp,
         .mnt_userns = file_mnt_user_ns(file),
         .ocount     = 0,
     };
     xfs_ino_t       lastino;
     int         error;
 
     /*
      * Output structure handling functions.  Depending on the command,
      * either the xfs_bstat and xfs_inogrp structures are written out
      * to userpace memory via bulkreq.ubuffer.  Normally the compat
      * functions and structure size are the correct ones to use ...
      */
     inumbers_fmt_pf     inumbers_func = xfs_fsinumbers_fmt_compat;
     bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
 
 #ifdef CONFIG_X86_X32_ABI
     if (in_x32_syscall()) {
         /*
          * ... but on x32 the input xfs_fsop_bulkreq has pointers
          * which must be handled in the "compat" (32-bit) way, while
          * the xfs_bstat and xfs_inogrp structures follow native 64-
          * bit layout convention.  So adjust accordingly, otherwise
          * the data written out in compat layout will not match what
          * x32 userspace expects.
          */
         inumbers_func = xfs_fsinumbers_fmt;
         bs_one_func = xfs_fsbulkstat_one_fmt;
     }
 #endif
 
     /* 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_is_shutdown(mp))
         return -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(&lastino, bulkreq.lastip, sizeof(__s64)))
         return -EFAULT;
 
     if (bulkreq.icount <= 0)
         return -EINVAL;
 
     if (bulkreq.ubuffer == NULL)
         return -EINVAL;
 
     breq.ubuffer = bulkreq.ubuffer;
     breq.icount = bulkreq.icount;
 
     /*
      * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
      * that we want to stat.  However, FSINUMBERS and FSBULKSTAT expect
      * that *lastip contains either zero or the number of the last inode to
      * be examined by the previous call and return results starting with
      * the next inode after that.  The new bulk request back end functions
      * take the inode to start with, so we have to compute the startino
      * parameter from lastino to maintain correct function.  lastino == 0
      * is a special case because it has traditionally meant "first inode
      * in filesystem".
      */
     if (cmd == XFS_IOC_FSINUMBERS_32) {
         breq.startino = lastino ? lastino + 1 : 0;
         error = xfs_inumbers(&breq, inumbers_func);
         lastino = breq.startino - 1;
     } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
         breq.startino = lastino;
         breq.icount = 1;
         error = xfs_bulkstat_one(&breq, bs_one_func);
         lastino = breq.startino;
     } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
         breq.startino = lastino ? lastino + 1 : 0;
         error = xfs_bulkstat(&breq, bs_one_func);
         lastino = breq.startino - 1;
     } else {
         error = -EINVAL;
     }
     if (error)
         return error;
 
     if (bulkreq.lastip != NULL &&
         copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
         return -EFAULT;
 
     if (bulkreq.ocount != NULL &&
         copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
         return -EFAULT;
 
     return 0;
 }
 
 STATIC int
 xfs_compat_handlereq_copyin(
     xfs_fsop_handlereq_t        *hreq,
     compat_xfs_fsop_handlereq_t __user *arg32)
 {
     compat_xfs_fsop_handlereq_t hreq32;
 
     if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
         return -EFAULT;
 
     hreq->fd = hreq32.fd;
     hreq->path = compat_ptr(hreq32.path);
     hreq->oflags = hreq32.oflags;
     hreq->ihandle = compat_ptr(hreq32.ihandle);
     hreq->ihandlen = hreq32.ihandlen;
     hreq->ohandle = compat_ptr(hreq32.ohandle);
     hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 
     return 0;
 }
 
 STATIC struct dentry *
 xfs_compat_handlereq_to_dentry(
     struct file     *parfilp,
     compat_xfs_fsop_handlereq_t *hreq)
 {
     return xfs_handle_to_dentry(parfilp,
             compat_ptr(hreq->ihandle), hreq->ihandlen);
 }
 
 STATIC int
 xfs_compat_attrlist_by_handle(
     struct file     *parfilp,
     compat_xfs_fsop_attrlist_handlereq_t __user *p)
 {
     compat_xfs_fsop_attrlist_handlereq_t al_hreq;
     struct dentry       *dentry;
     int         error;
 
     if (!capable(CAP_SYS_ADMIN))
         return -EPERM;
     if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
         return -EFAULT;
 
     dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
     if (IS_ERR(dentry))
         return PTR_ERR(dentry);
 
     error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)),
             compat_ptr(al_hreq.buffer), al_hreq.buflen,
             al_hreq.flags, &p->pos);
     dput(dentry);
     return error;
 }
 
 STATIC int
 xfs_compat_attrmulti_by_handle(
     struct file             *parfilp,
     void                    __user *arg)
 {
     int                 error;
     compat_xfs_attr_multiop_t       *ops;
     compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
     struct dentry               *dentry;
     unsigned int                i, size;
 
     if (!capable(CAP_SYS_ADMIN))
         return -EPERM;
     if (copy_from_user(&am_hreq, arg,
                sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
         return -EFAULT;
 
     /* overflow check */
     if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
         return -E2BIG;
 
     dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
     if (IS_ERR(dentry))
         return PTR_ERR(dentry);
 
     error = -E2BIG;
     size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
     if (!size || size > 16 * PAGE_SIZE)
         goto out_dput;
 
     ops = memdup_user(compat_ptr(am_hreq.ops), size);
     if (IS_ERR(ops)) {
         error = PTR_ERR(ops);
         goto out_dput;
     }
 
     error = 0;
     for (i = 0; i < am_hreq.opcount; i++) {
         ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
                 d_inode(dentry), ops[i].am_opcode,
                 compat_ptr(ops[i].am_attrname),
                 compat_ptr(ops[i].am_attrvalue),
                 &ops[i].am_length, ops[i].am_flags);
     }
 
     if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
         error = -EFAULT;
 
     kfree(ops);
  out_dput:
     dput(dentry);
     return error;
 }
 
 long
 xfs_file_compat_ioctl(
     struct file     *filp,
     unsigned        cmd,
     unsigned long       p)
 {
     struct inode        *inode = file_inode(filp);
     struct xfs_inode    *ip = XFS_I(inode);
     void            __user *arg = compat_ptr(p);
     int         error;
 
     trace_xfs_file_compat_ioctl(ip);
 
     switch (cmd) {
 #if defined(BROKEN_X86_ALIGNMENT)
     case XFS_IOC_FSGEOMETRY_V1_32:
         return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg);
     case XFS_IOC_FSGROWFSDATA_32: {
         struct xfs_growfs_data  in;
 
         if (xfs_compat_growfs_data_copyin(&in, arg))
             return -EFAULT;
         error = mnt_want_write_file(filp);
         if (error)
             return error;
         error = xfs_growfs_data(ip->i_mount, &in);
         mnt_drop_write_file(filp);
         return error;
     }
     case XFS_IOC_FSGROWFSRT_32: {
         struct xfs_growfs_rt    in;
 
         if (xfs_compat_growfs_rt_copyin(&in, arg))
             return -EFAULT;
         error = mnt_want_write_file(filp);
         if (error)
             return error;
         error = xfs_growfs_rt(ip->i_mount, &in);
         mnt_drop_write_file(filp);
         return error;
     }
 #endif
     /* long changes size, but xfs only copiese out 32 bits */
     case XFS_IOC_GETVERSION_32:
         cmd = _NATIVE_IOC(cmd, long);
         return xfs_file_ioctl(filp, cmd, p);
     case XFS_IOC_SWAPEXT_32: {
         struct xfs_swapext    sxp;
         struct compat_xfs_swapext __user *sxu = arg;
 
         /* Bulk copy in up to the sx_stat field, then copy bstat */
         if (copy_from_user(&sxp, sxu,
                    offsetof(struct xfs_swapext, sx_stat)) ||
             xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
             return -EFAULT;
         error = mnt_want_write_file(filp);
         if (error)
             return error;
         error = xfs_ioc_swapext(&sxp);
         mnt_drop_write_file(filp);
         return error;
     }
     case XFS_IOC_FSBULKSTAT_32:
     case XFS_IOC_FSBULKSTAT_SINGLE_32:
     case XFS_IOC_FSINUMBERS_32:
         return xfs_compat_ioc_fsbulkstat(filp, cmd, arg);
     case XFS_IOC_FD_TO_HANDLE_32:
     case XFS_IOC_PATH_TO_HANDLE_32:
     case XFS_IOC_PATH_TO_FSHANDLE_32: {
         struct xfs_fsop_handlereq   hreq;
 
         if (xfs_compat_handlereq_copyin(&hreq, arg))
             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);
     }
 }

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