1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_inode.h"
14 #include "xfs_rtalloc.h"
15 #include "xfs_iwalk.h"
16 #include "xfs_itable.h"
17 #include "xfs_error.h"
18 #include "xfs_da_format.h"
19 #include "xfs_da_btree.h"
22 #include "xfs_bmap_util.h"
23 #include "xfs_fsops.h"
24 #include "xfs_discard.h"
25 #include "xfs_quota.h"
26 #include "xfs_export.h"
27 #include "xfs_trace.h"
28 #include "xfs_icache.h"
29 #include "xfs_trans.h"
31 #include "xfs_btree.h"
32 #include <linux/fsmap.h>
33 #include "xfs_fsmap.h"
34 #include "scrub/xfs_scrub.h"
37 #include "xfs_health.h"
38 #include "xfs_reflink.h"
39 #include "xfs_ioctl.h"
40 #include "xfs_xattr.h"
41 #include "xfs_rtbitmap.h"
43 #include <linux/mount.h>
44 #include <linux/namei.h>
45 #include <linux/fileattr.h>
48 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
49 * a file or fs handle.
51 * XFS_IOC_PATH_TO_FSHANDLE
52 * returns fs handle for a mount point or path within that mount point
53 * XFS_IOC_FD_TO_HANDLE
54 * returns full handle for a FD opened in user space
55 * XFS_IOC_PATH_TO_HANDLE
56 * returns full handle for a path
61 xfs_fsop_handlereq_t
*hreq
)
71 if (cmd
== XFS_IOC_FD_TO_HANDLE
) {
75 inode
= file_inode(f
.file
);
77 error
= user_path_at(AT_FDCWD
, hreq
->path
, 0, &path
);
80 inode
= d_inode(path
.dentry
);
85 * We can only generate handles for inodes residing on a XFS filesystem,
86 * and only for regular files, directories or symbolic links.
89 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
)
93 if (!S_ISREG(inode
->i_mode
) &&
94 !S_ISDIR(inode
->i_mode
) &&
95 !S_ISLNK(inode
->i_mode
))
99 memcpy(&handle
.ha_fsid
, ip
->i_mount
->m_fixedfsid
, sizeof(xfs_fsid_t
));
101 if (cmd
== XFS_IOC_PATH_TO_FSHANDLE
) {
103 * This handle only contains an fsid, zero the rest.
105 memset(&handle
.ha_fid
, 0, sizeof(handle
.ha_fid
));
106 hsize
= sizeof(xfs_fsid_t
);
108 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
109 sizeof(handle
.ha_fid
.fid_len
);
110 handle
.ha_fid
.fid_pad
= 0;
111 handle
.ha_fid
.fid_gen
= inode
->i_generation
;
112 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
113 hsize
= sizeof(xfs_handle_t
);
117 if (copy_to_user(hreq
->ohandle
, &handle
, hsize
) ||
118 copy_to_user(hreq
->ohandlen
, &hsize
, sizeof(__s32
)))
124 if (cmd
== XFS_IOC_FD_TO_HANDLE
)
132 * No need to do permission checks on the various pathname components
133 * as the handle operations are privileged.
136 xfs_handle_acceptable(
138 struct dentry
*dentry
)
144 * Convert userspace handle data into a dentry.
147 xfs_handle_to_dentry(
148 struct file
*parfilp
,
149 void __user
*uhandle
,
153 struct xfs_fid64 fid
;
156 * Only allow handle opens under a directory.
158 if (!S_ISDIR(file_inode(parfilp
)->i_mode
))
159 return ERR_PTR(-ENOTDIR
);
161 if (hlen
!= sizeof(xfs_handle_t
))
162 return ERR_PTR(-EINVAL
);
163 if (copy_from_user(&handle
, uhandle
, hlen
))
164 return ERR_PTR(-EFAULT
);
165 if (handle
.ha_fid
.fid_len
!=
166 sizeof(handle
.ha_fid
) - sizeof(handle
.ha_fid
.fid_len
))
167 return ERR_PTR(-EINVAL
);
169 memset(&fid
, 0, sizeof(struct fid
));
170 fid
.ino
= handle
.ha_fid
.fid_ino
;
171 fid
.gen
= handle
.ha_fid
.fid_gen
;
173 return exportfs_decode_fh(parfilp
->f_path
.mnt
, (struct fid
*)&fid
, 3,
174 FILEID_INO32_GEN
| XFS_FILEID_TYPE_64FLAG
,
175 xfs_handle_acceptable
, NULL
);
178 STATIC
struct dentry
*
179 xfs_handlereq_to_dentry(
180 struct file
*parfilp
,
181 xfs_fsop_handlereq_t
*hreq
)
183 return xfs_handle_to_dentry(parfilp
, hreq
->ihandle
, hreq
->ihandlen
);
188 struct file
*parfilp
,
189 xfs_fsop_handlereq_t
*hreq
)
191 const struct cred
*cred
= current_cred();
197 struct dentry
*dentry
;
201 if (!capable(CAP_SYS_ADMIN
))
204 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
206 return PTR_ERR(dentry
);
207 inode
= d_inode(dentry
);
209 /* Restrict xfs_open_by_handle to directories & regular files. */
210 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
215 #if BITS_PER_LONG != 32
216 hreq
->oflags
|= O_LARGEFILE
;
219 permflag
= hreq
->oflags
;
220 fmode
= OPEN_FMODE(permflag
);
221 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
222 (fmode
& FMODE_WRITE
) && IS_APPEND(inode
)) {
227 if ((fmode
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
232 /* Can't write directories. */
233 if (S_ISDIR(inode
->i_mode
) && (fmode
& FMODE_WRITE
)) {
238 fd
= get_unused_fd_flags(0);
244 path
.mnt
= parfilp
->f_path
.mnt
;
245 path
.dentry
= dentry
;
246 filp
= dentry_open(&path
, hreq
->oflags
, cred
);
250 return PTR_ERR(filp
);
253 if (S_ISREG(inode
->i_mode
)) {
254 filp
->f_flags
|= O_NOATIME
;
255 filp
->f_mode
|= FMODE_NOCMTIME
;
258 fd_install(fd
, filp
);
267 xfs_readlink_by_handle(
268 struct file
*parfilp
,
269 xfs_fsop_handlereq_t
*hreq
)
271 struct dentry
*dentry
;
275 if (!capable(CAP_SYS_ADMIN
))
278 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
280 return PTR_ERR(dentry
);
282 /* Restrict this handle operation to symlinks only. */
283 if (!d_is_symlink(dentry
)) {
288 if (copy_from_user(&olen
, hreq
->ohandlen
, sizeof(__u32
))) {
293 error
= vfs_readlink(dentry
, hreq
->ohandle
, olen
);
301 * Format an attribute and copy it out to the user's buffer.
302 * Take care to check values and protect against them changing later,
303 * we may be reading them directly out of a user buffer.
306 xfs_ioc_attr_put_listent(
307 struct xfs_attr_list_context
*context
,
313 struct xfs_attrlist
*alist
= context
->buffer
;
314 struct xfs_attrlist_ent
*aep
;
317 ASSERT(!context
->seen_enough
);
318 ASSERT(context
->count
>= 0);
319 ASSERT(context
->count
< (ATTR_MAX_VALUELEN
/8));
320 ASSERT(context
->firstu
>= sizeof(*alist
));
321 ASSERT(context
->firstu
<= context
->bufsize
);
324 * Only list entries in the right namespace.
326 if (context
->attr_filter
!= (flags
& XFS_ATTR_NSP_ONDISK_MASK
))
329 arraytop
= sizeof(*alist
) +
330 context
->count
* sizeof(alist
->al_offset
[0]);
332 /* decrement by the actual bytes used by the attr */
333 context
->firstu
-= round_up(offsetof(struct xfs_attrlist_ent
, a_name
) +
334 namelen
+ 1, sizeof(uint32_t));
335 if (context
->firstu
< arraytop
) {
336 trace_xfs_attr_list_full(context
);
338 context
->seen_enough
= 1;
342 aep
= context
->buffer
+ context
->firstu
;
343 aep
->a_valuelen
= valuelen
;
344 memcpy(aep
->a_name
, name
, namelen
);
345 aep
->a_name
[namelen
] = 0;
346 alist
->al_offset
[context
->count
++] = context
->firstu
;
347 alist
->al_count
= context
->count
;
348 trace_xfs_attr_list_add(context
);
355 if (ioc_flags
& XFS_IOC_ATTR_ROOT
)
356 return XFS_ATTR_ROOT
;
357 if (ioc_flags
& XFS_IOC_ATTR_SECURE
)
358 return XFS_ATTR_SECURE
;
366 if (ioc_flags
& XFS_IOC_ATTR_CREATE
)
368 if (ioc_flags
& XFS_IOC_ATTR_REPLACE
)
369 return XATTR_REPLACE
;
375 struct xfs_inode
*dp
,
379 struct xfs_attrlist_cursor __user
*ucursor
)
381 struct xfs_attr_list_context context
= { };
382 struct xfs_attrlist
*alist
;
386 if (bufsize
< sizeof(struct xfs_attrlist
) ||
387 bufsize
> XFS_XATTR_LIST_MAX
)
391 * Reject flags, only allow namespaces.
393 if (flags
& ~(XFS_IOC_ATTR_ROOT
| XFS_IOC_ATTR_SECURE
))
395 if (flags
== (XFS_IOC_ATTR_ROOT
| XFS_IOC_ATTR_SECURE
))
399 * Validate the cursor.
401 if (copy_from_user(&context
.cursor
, ucursor
, sizeof(context
.cursor
)))
403 if (context
.cursor
.pad1
|| context
.cursor
.pad2
)
405 if (!context
.cursor
.initted
&&
406 (context
.cursor
.hashval
|| context
.cursor
.blkno
||
407 context
.cursor
.offset
))
410 buffer
= kvzalloc(bufsize
, GFP_KERNEL
);
415 * Initialize the output buffer.
419 context
.attr_filter
= xfs_attr_filter(flags
);
420 context
.buffer
= buffer
;
421 context
.bufsize
= round_down(bufsize
, sizeof(uint32_t));
422 context
.firstu
= context
.bufsize
;
423 context
.put_listent
= xfs_ioc_attr_put_listent
;
425 alist
= context
.buffer
;
428 alist
->al_offset
[0] = context
.bufsize
;
430 error
= xfs_attr_list(&context
);
434 if (copy_to_user(ubuf
, buffer
, bufsize
) ||
435 copy_to_user(ucursor
, &context
.cursor
, sizeof(context
.cursor
)))
443 xfs_attrlist_by_handle(
444 struct file
*parfilp
,
445 struct xfs_fsop_attrlist_handlereq __user
*p
)
447 struct xfs_fsop_attrlist_handlereq al_hreq
;
448 struct dentry
*dentry
;
451 if (!capable(CAP_SYS_ADMIN
))
453 if (copy_from_user(&al_hreq
, p
, sizeof(al_hreq
)))
456 dentry
= xfs_handlereq_to_dentry(parfilp
, &al_hreq
.hreq
);
458 return PTR_ERR(dentry
);
460 error
= xfs_ioc_attr_list(XFS_I(d_inode(dentry
)), al_hreq
.buffer
,
461 al_hreq
.buflen
, al_hreq
.flags
, &p
->pos
);
467 xfs_attrmulti_attr_get(
470 unsigned char __user
*ubuf
,
474 struct xfs_da_args args
= {
476 .attr_filter
= xfs_attr_filter(flags
),
477 .attr_flags
= xfs_attr_flags(flags
),
479 .namelen
= strlen(name
),
484 if (*len
> XFS_XATTR_SIZE_MAX
)
487 error
= xfs_attr_get(&args
);
491 *len
= args
.valuelen
;
492 if (copy_to_user(ubuf
, args
.value
, args
.valuelen
))
496 kmem_free(args
.value
);
501 xfs_attrmulti_attr_set(
504 const unsigned char __user
*ubuf
,
508 struct xfs_da_args args
= {
510 .attr_filter
= xfs_attr_filter(flags
),
511 .attr_flags
= xfs_attr_flags(flags
),
513 .namelen
= strlen(name
),
517 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
521 if (len
> XFS_XATTR_SIZE_MAX
)
523 args
.value
= memdup_user(ubuf
, len
);
524 if (IS_ERR(args
.value
))
525 return PTR_ERR(args
.value
);
529 error
= xfs_attr_change(&args
);
530 if (!error
&& (flags
& XFS_IOC_ATTR_ROOT
))
531 xfs_forget_acl(inode
, name
);
537 xfs_ioc_attrmulti_one(
538 struct file
*parfilp
,
549 if ((flags
& XFS_IOC_ATTR_ROOT
) && (flags
& XFS_IOC_ATTR_SECURE
))
552 name
= strndup_user(uname
, MAXNAMELEN
);
554 return PTR_ERR(name
);
558 error
= xfs_attrmulti_attr_get(inode
, name
, value
, len
, flags
);
565 error
= mnt_want_write_file(parfilp
);
568 error
= xfs_attrmulti_attr_set(inode
, name
, value
, *len
, flags
);
569 mnt_drop_write_file(parfilp
);
581 xfs_attrmulti_by_handle(
582 struct file
*parfilp
,
586 xfs_attr_multiop_t
*ops
;
587 xfs_fsop_attrmulti_handlereq_t am_hreq
;
588 struct dentry
*dentry
;
589 unsigned int i
, size
;
591 if (!capable(CAP_SYS_ADMIN
))
593 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
597 if (am_hreq
.opcount
>= INT_MAX
/ sizeof(xfs_attr_multiop_t
))
600 dentry
= xfs_handlereq_to_dentry(parfilp
, &am_hreq
.hreq
);
602 return PTR_ERR(dentry
);
605 size
= am_hreq
.opcount
* sizeof(xfs_attr_multiop_t
);
606 if (!size
|| size
> 16 * PAGE_SIZE
)
609 ops
= memdup_user(am_hreq
.ops
, size
);
611 error
= PTR_ERR(ops
);
616 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
617 ops
[i
].am_error
= xfs_ioc_attrmulti_one(parfilp
,
618 d_inode(dentry
), ops
[i
].am_opcode
,
619 ops
[i
].am_attrname
, ops
[i
].am_attrvalue
,
620 &ops
[i
].am_length
, ops
[i
].am_flags
);
623 if (copy_to_user(am_hreq
.ops
, ops
, size
))
632 /* Return 0 on success or positive error */
634 xfs_fsbulkstat_one_fmt(
635 struct xfs_ibulk
*breq
,
636 const struct xfs_bulkstat
*bstat
)
638 struct xfs_bstat bs1
;
640 xfs_bulkstat_to_bstat(breq
->mp
, &bs1
, bstat
);
641 if (copy_to_user(breq
->ubuffer
, &bs1
, sizeof(bs1
)))
643 return xfs_ibulk_advance(breq
, sizeof(struct xfs_bstat
));
648 struct xfs_ibulk
*breq
,
649 const struct xfs_inumbers
*igrp
)
651 struct xfs_inogrp ig1
;
653 xfs_inumbers_to_inogrp(&ig1
, igrp
);
654 if (copy_to_user(breq
->ubuffer
, &ig1
, sizeof(struct xfs_inogrp
)))
656 return xfs_ibulk_advance(breq
, sizeof(struct xfs_inogrp
));
665 struct xfs_mount
*mp
= XFS_I(file_inode(file
))->i_mount
;
666 struct xfs_fsop_bulkreq bulkreq
;
667 struct xfs_ibulk breq
= {
669 .idmap
= file_mnt_idmap(file
),
675 /* done = 1 if there are more stats to get and if bulkstat */
676 /* should be called again (unused here, but used in dmapi) */
678 if (!capable(CAP_SYS_ADMIN
))
681 if (xfs_is_shutdown(mp
))
684 if (copy_from_user(&bulkreq
, arg
, sizeof(struct xfs_fsop_bulkreq
)))
687 if (copy_from_user(&lastino
, bulkreq
.lastip
, sizeof(__s64
)))
690 if (bulkreq
.icount
<= 0)
693 if (bulkreq
.ubuffer
== NULL
)
696 breq
.ubuffer
= bulkreq
.ubuffer
;
697 breq
.icount
= bulkreq
.icount
;
700 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
701 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
702 * that *lastip contains either zero or the number of the last inode to
703 * be examined by the previous call and return results starting with
704 * the next inode after that. The new bulk request back end functions
705 * take the inode to start with, so we have to compute the startino
706 * parameter from lastino to maintain correct function. lastino == 0
707 * is a special case because it has traditionally meant "first inode
710 if (cmd
== XFS_IOC_FSINUMBERS
) {
711 breq
.startino
= lastino
? lastino
+ 1 : 0;
712 error
= xfs_inumbers(&breq
, xfs_fsinumbers_fmt
);
713 lastino
= breq
.startino
- 1;
714 } else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
) {
715 breq
.startino
= lastino
;
717 error
= xfs_bulkstat_one(&breq
, xfs_fsbulkstat_one_fmt
);
718 } else { /* XFS_IOC_FSBULKSTAT */
719 breq
.startino
= lastino
? lastino
+ 1 : 0;
720 error
= xfs_bulkstat(&breq
, xfs_fsbulkstat_one_fmt
);
721 lastino
= breq
.startino
- 1;
727 if (bulkreq
.lastip
!= NULL
&&
728 copy_to_user(bulkreq
.lastip
, &lastino
, sizeof(xfs_ino_t
)))
731 if (bulkreq
.ocount
!= NULL
&&
732 copy_to_user(bulkreq
.ocount
, &breq
.ocount
, sizeof(__s32
)))
738 /* Return 0 on success or positive error */
741 struct xfs_ibulk
*breq
,
742 const struct xfs_bulkstat
*bstat
)
744 if (copy_to_user(breq
->ubuffer
, bstat
, sizeof(struct xfs_bulkstat
)))
746 return xfs_ibulk_advance(breq
, sizeof(struct xfs_bulkstat
));
750 * Check the incoming bulk request @hdr from userspace and initialize the
751 * internal @breq bulk request appropriately. Returns 0 if the bulk request
752 * should proceed; -ECANCELED if there's nothing to do; or the usual
753 * negative error code.
757 struct xfs_mount
*mp
,
758 const struct xfs_bulk_ireq
*hdr
,
759 struct xfs_ibulk
*breq
,
760 void __user
*ubuffer
)
762 if (hdr
->icount
== 0 ||
763 (hdr
->flags
& ~XFS_BULK_IREQ_FLAGS_ALL
) ||
764 memchr_inv(hdr
->reserved
, 0, sizeof(hdr
->reserved
)))
767 breq
->startino
= hdr
->ino
;
768 breq
->ubuffer
= ubuffer
;
769 breq
->icount
= hdr
->icount
;
774 * The @ino parameter is a special value, so we must look it up here.
775 * We're not allowed to have IREQ_AGNO, and we only return one inode
778 if (hdr
->flags
& XFS_BULK_IREQ_SPECIAL
) {
779 if (hdr
->flags
& XFS_BULK_IREQ_AGNO
)
783 case XFS_BULK_IREQ_SPECIAL_ROOT
:
784 breq
->startino
= mp
->m_sb
.sb_rootino
;
793 * The IREQ_AGNO flag means that we only want results from a given AG.
794 * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is
795 * beyond the specified AG then we return no results.
797 if (hdr
->flags
& XFS_BULK_IREQ_AGNO
) {
798 if (hdr
->agno
>= mp
->m_sb
.sb_agcount
)
801 if (breq
->startino
== 0)
802 breq
->startino
= XFS_AGINO_TO_INO(mp
, hdr
->agno
, 0);
803 else if (XFS_INO_TO_AGNO(mp
, breq
->startino
) < hdr
->agno
)
806 breq
->flags
|= XFS_IBULK_SAME_AG
;
808 /* Asking for an inode past the end of the AG? We're done! */
809 if (XFS_INO_TO_AGNO(mp
, breq
->startino
) > hdr
->agno
)
811 } else if (hdr
->agno
)
814 /* Asking for an inode past the end of the FS? We're done! */
815 if (XFS_INO_TO_AGNO(mp
, breq
->startino
) >= mp
->m_sb
.sb_agcount
)
818 if (hdr
->flags
& XFS_BULK_IREQ_NREXT64
)
819 breq
->flags
|= XFS_IBULK_NREXT64
;
825 * Update the userspace bulk request @hdr to reflect the end state of the
826 * internal bulk request @breq.
829 xfs_bulk_ireq_teardown(
830 struct xfs_bulk_ireq
*hdr
,
831 struct xfs_ibulk
*breq
)
833 hdr
->ino
= breq
->startino
;
834 hdr
->ocount
= breq
->ocount
;
837 /* Handle the v5 bulkstat ioctl. */
842 struct xfs_bulkstat_req __user
*arg
)
844 struct xfs_mount
*mp
= XFS_I(file_inode(file
))->i_mount
;
845 struct xfs_bulk_ireq hdr
;
846 struct xfs_ibulk breq
= {
848 .idmap
= file_mnt_idmap(file
),
852 if (!capable(CAP_SYS_ADMIN
))
855 if (xfs_is_shutdown(mp
))
858 if (copy_from_user(&hdr
, &arg
->hdr
, sizeof(hdr
)))
861 error
= xfs_bulk_ireq_setup(mp
, &hdr
, &breq
, arg
->bulkstat
);
862 if (error
== -ECANCELED
)
867 error
= xfs_bulkstat(&breq
, xfs_bulkstat_fmt
);
872 xfs_bulk_ireq_teardown(&hdr
, &breq
);
873 if (copy_to_user(&arg
->hdr
, &hdr
, sizeof(hdr
)))
881 struct xfs_ibulk
*breq
,
882 const struct xfs_inumbers
*igrp
)
884 if (copy_to_user(breq
->ubuffer
, igrp
, sizeof(struct xfs_inumbers
)))
886 return xfs_ibulk_advance(breq
, sizeof(struct xfs_inumbers
));
889 /* Handle the v5 inumbers ioctl. */
892 struct xfs_mount
*mp
,
894 struct xfs_inumbers_req __user
*arg
)
896 struct xfs_bulk_ireq hdr
;
897 struct xfs_ibulk breq
= {
902 if (!capable(CAP_SYS_ADMIN
))
905 if (xfs_is_shutdown(mp
))
908 if (copy_from_user(&hdr
, &arg
->hdr
, sizeof(hdr
)))
911 error
= xfs_bulk_ireq_setup(mp
, &hdr
, &breq
, arg
->inumbers
);
912 if (error
== -ECANCELED
)
917 error
= xfs_inumbers(&breq
, xfs_inumbers_fmt
);
922 xfs_bulk_ireq_teardown(&hdr
, &breq
);
923 if (copy_to_user(&arg
->hdr
, &hdr
, sizeof(hdr
)))
931 struct xfs_mount
*mp
,
935 struct xfs_fsop_geom fsgeo
;
938 xfs_fs_geometry(mp
, &fsgeo
, struct_version
);
940 if (struct_version
<= 3)
941 len
= sizeof(struct xfs_fsop_geom_v1
);
942 else if (struct_version
== 4)
943 len
= sizeof(struct xfs_fsop_geom_v4
);
945 xfs_fsop_geom_health(mp
, &fsgeo
);
949 if (copy_to_user(arg
, &fsgeo
, len
))
956 struct xfs_mount
*mp
,
959 struct xfs_perag
*pag
;
960 struct xfs_ag_geometry ageo
;
963 if (copy_from_user(&ageo
, arg
, sizeof(ageo
)))
967 if (memchr_inv(&ageo
.ag_reserved
, 0, sizeof(ageo
.ag_reserved
)))
970 pag
= xfs_perag_get(mp
, ageo
.ag_number
);
974 error
= xfs_ag_get_geometry(pag
, &ageo
);
979 if (copy_to_user(arg
, &ageo
, sizeof(ageo
)))
985 * Linux extended inode flags interface.
990 struct xfs_inode
*ip
,
994 struct xfs_mount
*mp
= ip
->i_mount
;
995 struct xfs_ifork
*ifp
= xfs_ifork_ptr(ip
, whichfork
);
997 fileattr_fill_xflags(fa
, xfs_ip2xflags(ip
));
999 if (ip
->i_diflags
& XFS_DIFLAG_EXTSIZE
) {
1000 fa
->fsx_extsize
= XFS_FSB_TO_B(mp
, ip
->i_extsize
);
1001 } else if (ip
->i_diflags
& XFS_DIFLAG_EXTSZINHERIT
) {
1003 * Don't let a misaligned extent size hint on a directory
1004 * escape to userspace if it won't pass the setattr checks
1007 if ((ip
->i_diflags
& XFS_DIFLAG_RTINHERIT
) &&
1008 xfs_extlen_to_rtxmod(mp
, ip
->i_extsize
) > 0) {
1009 fa
->fsx_xflags
&= ~(FS_XFLAG_EXTSIZE
|
1010 FS_XFLAG_EXTSZINHERIT
);
1011 fa
->fsx_extsize
= 0;
1013 fa
->fsx_extsize
= XFS_FSB_TO_B(mp
, ip
->i_extsize
);
1017 if (ip
->i_diflags2
& XFS_DIFLAG2_COWEXTSIZE
)
1018 fa
->fsx_cowextsize
= XFS_FSB_TO_B(mp
, ip
->i_cowextsize
);
1019 fa
->fsx_projid
= ip
->i_projid
;
1020 if (ifp
&& !xfs_need_iread_extents(ifp
))
1021 fa
->fsx_nextents
= xfs_iext_count(ifp
);
1023 fa
->fsx_nextents
= xfs_ifork_nextents(ifp
);
1027 xfs_ioc_fsgetxattra(
1033 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1034 xfs_fill_fsxattr(ip
, XFS_ATTR_FORK
, &fa
);
1035 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1037 return copy_fsxattr_to_user(&fa
, arg
);
1042 struct dentry
*dentry
,
1043 struct fileattr
*fa
)
1045 struct xfs_inode
*ip
= XFS_I(d_inode(dentry
));
1047 if (d_is_special(dentry
))
1050 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1051 xfs_fill_fsxattr(ip
, XFS_DATA_FORK
, fa
);
1052 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1059 struct xfs_inode
*ip
,
1060 unsigned int xflags
)
1062 /* can't set PREALLOC this way, just preserve it */
1064 (ip
->i_diflags
& XFS_DIFLAG_PREALLOC
);
1066 if (xflags
& FS_XFLAG_IMMUTABLE
)
1067 di_flags
|= XFS_DIFLAG_IMMUTABLE
;
1068 if (xflags
& FS_XFLAG_APPEND
)
1069 di_flags
|= XFS_DIFLAG_APPEND
;
1070 if (xflags
& FS_XFLAG_SYNC
)
1071 di_flags
|= XFS_DIFLAG_SYNC
;
1072 if (xflags
& FS_XFLAG_NOATIME
)
1073 di_flags
|= XFS_DIFLAG_NOATIME
;
1074 if (xflags
& FS_XFLAG_NODUMP
)
1075 di_flags
|= XFS_DIFLAG_NODUMP
;
1076 if (xflags
& FS_XFLAG_NODEFRAG
)
1077 di_flags
|= XFS_DIFLAG_NODEFRAG
;
1078 if (xflags
& FS_XFLAG_FILESTREAM
)
1079 di_flags
|= XFS_DIFLAG_FILESTREAM
;
1080 if (S_ISDIR(VFS_I(ip
)->i_mode
)) {
1081 if (xflags
& FS_XFLAG_RTINHERIT
)
1082 di_flags
|= XFS_DIFLAG_RTINHERIT
;
1083 if (xflags
& FS_XFLAG_NOSYMLINKS
)
1084 di_flags
|= XFS_DIFLAG_NOSYMLINKS
;
1085 if (xflags
& FS_XFLAG_EXTSZINHERIT
)
1086 di_flags
|= XFS_DIFLAG_EXTSZINHERIT
;
1087 if (xflags
& FS_XFLAG_PROJINHERIT
)
1088 di_flags
|= XFS_DIFLAG_PROJINHERIT
;
1089 } else if (S_ISREG(VFS_I(ip
)->i_mode
)) {
1090 if (xflags
& FS_XFLAG_REALTIME
)
1091 di_flags
|= XFS_DIFLAG_REALTIME
;
1092 if (xflags
& FS_XFLAG_EXTSIZE
)
1093 di_flags
|= XFS_DIFLAG_EXTSIZE
;
1101 struct xfs_inode
*ip
,
1102 unsigned int xflags
)
1104 uint64_t di_flags2
=
1105 (ip
->i_diflags2
& (XFS_DIFLAG2_REFLINK
|
1106 XFS_DIFLAG2_BIGTIME
|
1107 XFS_DIFLAG2_NREXT64
));
1109 if (xflags
& FS_XFLAG_DAX
)
1110 di_flags2
|= XFS_DIFLAG2_DAX
;
1111 if (xflags
& FS_XFLAG_COWEXTSIZE
)
1112 di_flags2
|= XFS_DIFLAG2_COWEXTSIZE
;
1118 xfs_ioctl_setattr_xflags(
1119 struct xfs_trans
*tp
,
1120 struct xfs_inode
*ip
,
1121 struct fileattr
*fa
)
1123 struct xfs_mount
*mp
= ip
->i_mount
;
1126 /* Can't change realtime flag if any extents are allocated. */
1127 if ((ip
->i_df
.if_nextents
|| ip
->i_delayed_blks
) &&
1128 XFS_IS_REALTIME_INODE(ip
) != (fa
->fsx_xflags
& FS_XFLAG_REALTIME
))
1131 /* If realtime flag is set then must have realtime device */
1132 if (fa
->fsx_xflags
& FS_XFLAG_REALTIME
) {
1133 if (mp
->m_sb
.sb_rblocks
== 0 || mp
->m_sb
.sb_rextsize
== 0 ||
1134 xfs_extlen_to_rtxmod(mp
, ip
->i_extsize
))
1138 /* Clear reflink if we are actually able to set the rt flag. */
1139 if ((fa
->fsx_xflags
& FS_XFLAG_REALTIME
) && xfs_is_reflink_inode(ip
))
1140 ip
->i_diflags2
&= ~XFS_DIFLAG2_REFLINK
;
1142 /* diflags2 only valid for v3 inodes. */
1143 i_flags2
= xfs_flags2diflags2(ip
, fa
->fsx_xflags
);
1144 if (i_flags2
&& !xfs_has_v3inodes(mp
))
1147 ip
->i_diflags
= xfs_flags2diflags(ip
, fa
->fsx_xflags
);
1148 ip
->i_diflags2
= i_flags2
;
1150 xfs_diflags_to_iflags(ip
, false);
1151 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_CHG
);
1152 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1153 XFS_STATS_INC(mp
, xs_ig_attrchg
);
1158 xfs_ioctl_setattr_prepare_dax(
1159 struct xfs_inode
*ip
,
1160 struct fileattr
*fa
)
1162 struct xfs_mount
*mp
= ip
->i_mount
;
1163 struct inode
*inode
= VFS_I(ip
);
1165 if (S_ISDIR(inode
->i_mode
))
1168 if (xfs_has_dax_always(mp
) || xfs_has_dax_never(mp
))
1171 if (((fa
->fsx_xflags
& FS_XFLAG_DAX
) &&
1172 !(ip
->i_diflags2
& XFS_DIFLAG2_DAX
)) ||
1173 (!(fa
->fsx_xflags
& FS_XFLAG_DAX
) &&
1174 (ip
->i_diflags2
& XFS_DIFLAG2_DAX
)))
1175 d_mark_dontcache(inode
);
1179 * Set up the transaction structure for the setattr operation, checking that we
1180 * have permission to do so. On success, return a clean transaction and the
1181 * inode locked exclusively ready for further operation specific checks. On
1182 * failure, return an error without modifying or locking the inode.
1184 static struct xfs_trans
*
1185 xfs_ioctl_setattr_get_trans(
1186 struct xfs_inode
*ip
,
1187 struct xfs_dquot
*pdqp
)
1189 struct xfs_mount
*mp
= ip
->i_mount
;
1190 struct xfs_trans
*tp
;
1193 if (xfs_is_readonly(mp
))
1196 if (xfs_is_shutdown(mp
))
1199 error
= xfs_trans_alloc_ichange(ip
, NULL
, NULL
, pdqp
,
1200 has_capability_noaudit(current
, CAP_FOWNER
), &tp
);
1204 if (xfs_has_wsync(mp
))
1205 xfs_trans_set_sync(tp
);
1210 return ERR_PTR(error
);
1214 * Validate a proposed extent size hint. For regular files, the hint can only
1215 * be changed if no extents are allocated.
1218 xfs_ioctl_setattr_check_extsize(
1219 struct xfs_inode
*ip
,
1220 struct fileattr
*fa
)
1222 struct xfs_mount
*mp
= ip
->i_mount
;
1223 xfs_failaddr_t failaddr
;
1224 uint16_t new_diflags
;
1229 if (S_ISREG(VFS_I(ip
)->i_mode
) && ip
->i_df
.if_nextents
&&
1230 XFS_FSB_TO_B(mp
, ip
->i_extsize
) != fa
->fsx_extsize
)
1233 if (fa
->fsx_extsize
& mp
->m_blockmask
)
1236 new_diflags
= xfs_flags2diflags(ip
, fa
->fsx_xflags
);
1239 * Inode verifiers do not check that the extent size hint is an integer
1240 * multiple of the rt extent size on a directory with both rtinherit
1241 * and extszinherit flags set. Don't let sysadmins misconfigure
1244 if ((new_diflags
& XFS_DIFLAG_RTINHERIT
) &&
1245 (new_diflags
& XFS_DIFLAG_EXTSZINHERIT
)) {
1246 unsigned int rtextsize_bytes
;
1248 rtextsize_bytes
= XFS_FSB_TO_B(mp
, mp
->m_sb
.sb_rextsize
);
1249 if (fa
->fsx_extsize
% rtextsize_bytes
)
1253 failaddr
= xfs_inode_validate_extsize(ip
->i_mount
,
1254 XFS_B_TO_FSB(mp
, fa
->fsx_extsize
),
1255 VFS_I(ip
)->i_mode
, new_diflags
);
1256 return failaddr
!= NULL
? -EINVAL
: 0;
1260 xfs_ioctl_setattr_check_cowextsize(
1261 struct xfs_inode
*ip
,
1262 struct fileattr
*fa
)
1264 struct xfs_mount
*mp
= ip
->i_mount
;
1265 xfs_failaddr_t failaddr
;
1266 uint64_t new_diflags2
;
1267 uint16_t new_diflags
;
1272 if (fa
->fsx_cowextsize
& mp
->m_blockmask
)
1275 new_diflags
= xfs_flags2diflags(ip
, fa
->fsx_xflags
);
1276 new_diflags2
= xfs_flags2diflags2(ip
, fa
->fsx_xflags
);
1278 failaddr
= xfs_inode_validate_cowextsize(ip
->i_mount
,
1279 XFS_B_TO_FSB(mp
, fa
->fsx_cowextsize
),
1280 VFS_I(ip
)->i_mode
, new_diflags
, new_diflags2
);
1281 return failaddr
!= NULL
? -EINVAL
: 0;
1285 xfs_ioctl_setattr_check_projid(
1286 struct xfs_inode
*ip
,
1287 struct fileattr
*fa
)
1292 /* Disallow 32bit project ids if 32bit IDs are not enabled. */
1293 if (fa
->fsx_projid
> (uint16_t)-1 &&
1294 !xfs_has_projid32(ip
->i_mount
))
1301 struct mnt_idmap
*idmap
,
1302 struct dentry
*dentry
,
1303 struct fileattr
*fa
)
1305 struct xfs_inode
*ip
= XFS_I(d_inode(dentry
));
1306 struct xfs_mount
*mp
= ip
->i_mount
;
1307 struct xfs_trans
*tp
;
1308 struct xfs_dquot
*pdqp
= NULL
;
1309 struct xfs_dquot
*olddquot
= NULL
;
1312 trace_xfs_ioctl_setattr(ip
);
1314 if (d_is_special(dentry
))
1317 if (!fa
->fsx_valid
) {
1318 if (fa
->flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
|
1319 FS_NOATIME_FL
| FS_NODUMP_FL
|
1320 FS_SYNC_FL
| FS_DAX_FL
| FS_PROJINHERIT_FL
))
1324 error
= xfs_ioctl_setattr_check_projid(ip
, fa
);
1329 * If disk quotas is on, we make sure that the dquots do exist on disk,
1330 * before we start any other transactions. Trying to do this later
1331 * is messy. We don't care to take a readlock to look at the ids
1332 * in inode here, because we can't hold it across the trans_reserve.
1333 * If the IDs do change before we take the ilock, we're covered
1334 * because the i_*dquot fields will get updated anyway.
1336 if (fa
->fsx_valid
&& XFS_IS_QUOTA_ON(mp
)) {
1337 error
= xfs_qm_vop_dqalloc(ip
, VFS_I(ip
)->i_uid
,
1338 VFS_I(ip
)->i_gid
, fa
->fsx_projid
,
1339 XFS_QMOPT_PQUOTA
, NULL
, NULL
, &pdqp
);
1344 xfs_ioctl_setattr_prepare_dax(ip
, fa
);
1346 tp
= xfs_ioctl_setattr_get_trans(ip
, pdqp
);
1348 error
= PTR_ERR(tp
);
1349 goto error_free_dquots
;
1352 error
= xfs_ioctl_setattr_check_extsize(ip
, fa
);
1354 goto error_trans_cancel
;
1356 error
= xfs_ioctl_setattr_check_cowextsize(ip
, fa
);
1358 goto error_trans_cancel
;
1360 error
= xfs_ioctl_setattr_xflags(tp
, ip
, fa
);
1362 goto error_trans_cancel
;
1367 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1368 * overrides the following restrictions:
1370 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1371 * successful return from chown()
1374 if ((VFS_I(ip
)->i_mode
& (S_ISUID
|S_ISGID
)) &&
1375 !capable_wrt_inode_uidgid(idmap
, VFS_I(ip
), CAP_FSETID
))
1376 VFS_I(ip
)->i_mode
&= ~(S_ISUID
|S_ISGID
);
1378 /* Change the ownerships and register project quota modifications */
1379 if (ip
->i_projid
!= fa
->fsx_projid
) {
1380 if (XFS_IS_PQUOTA_ON(mp
)) {
1381 olddquot
= xfs_qm_vop_chown(tp
, ip
,
1382 &ip
->i_pdquot
, pdqp
);
1384 ip
->i_projid
= fa
->fsx_projid
;
1388 * Only set the extent size hint if we've already determined that the
1389 * extent size hint should be set on the inode. If no extent size flags
1390 * are set on the inode then unconditionally clear the extent size hint.
1392 if (ip
->i_diflags
& (XFS_DIFLAG_EXTSIZE
| XFS_DIFLAG_EXTSZINHERIT
))
1393 ip
->i_extsize
= XFS_B_TO_FSB(mp
, fa
->fsx_extsize
);
1397 if (xfs_has_v3inodes(mp
)) {
1398 if (ip
->i_diflags2
& XFS_DIFLAG2_COWEXTSIZE
)
1399 ip
->i_cowextsize
= XFS_B_TO_FSB(mp
, fa
->fsx_cowextsize
);
1401 ip
->i_cowextsize
= 0;
1405 error
= xfs_trans_commit(tp
);
1408 * Release any dquot(s) the inode had kept before chown.
1410 xfs_qm_dqrele(olddquot
);
1411 xfs_qm_dqrele(pdqp
);
1416 xfs_trans_cancel(tp
);
1418 xfs_qm_dqrele(pdqp
);
1425 struct getbmapx __user
*u
,
1428 if (put_user(p
->bmv_offset
, &u
->bmv_offset
) ||
1429 put_user(p
->bmv_block
, &u
->bmv_block
) ||
1430 put_user(p
->bmv_length
, &u
->bmv_length
) ||
1431 put_user(0, &u
->bmv_count
) ||
1432 put_user(0, &u
->bmv_entries
))
1434 if (recsize
< sizeof(struct getbmapx
))
1436 if (put_user(0, &u
->bmv_iflags
) ||
1437 put_user(p
->bmv_oflags
, &u
->bmv_oflags
) ||
1438 put_user(0, &u
->bmv_unused1
) ||
1439 put_user(0, &u
->bmv_unused2
))
1450 struct getbmapx bmx
= { 0 };
1451 struct kgetbmap
*buf
;
1456 case XFS_IOC_GETBMAPA
:
1457 bmx
.bmv_iflags
= BMV_IF_ATTRFORK
;
1459 case XFS_IOC_GETBMAP
:
1460 /* struct getbmap is a strict subset of struct getbmapx. */
1461 recsize
= sizeof(struct getbmap
);
1463 case XFS_IOC_GETBMAPX
:
1464 recsize
= sizeof(struct getbmapx
);
1470 if (copy_from_user(&bmx
, arg
, recsize
))
1473 if (bmx
.bmv_count
< 2)
1475 if (bmx
.bmv_count
>= INT_MAX
/ recsize
)
1478 buf
= kvcalloc(bmx
.bmv_count
, sizeof(*buf
), GFP_KERNEL
);
1482 error
= xfs_getbmap(XFS_I(file_inode(file
)), &bmx
, buf
);
1487 if (copy_to_user(arg
, &bmx
, recsize
))
1491 for (i
= 0; i
< bmx
.bmv_entries
; i
++) {
1492 if (!xfs_getbmap_format(buf
+ i
, arg
, recsize
))
1505 struct xfs_inode
*ip
,
1506 struct fsmap_head __user
*arg
)
1508 struct xfs_fsmap_head xhead
= {0};
1509 struct fsmap_head head
;
1512 __u32 last_flags
= 0;
1516 if (copy_from_user(&head
, arg
, sizeof(struct fsmap_head
)))
1518 if (memchr_inv(head
.fmh_reserved
, 0, sizeof(head
.fmh_reserved
)) ||
1519 memchr_inv(head
.fmh_keys
[0].fmr_reserved
, 0,
1520 sizeof(head
.fmh_keys
[0].fmr_reserved
)) ||
1521 memchr_inv(head
.fmh_keys
[1].fmr_reserved
, 0,
1522 sizeof(head
.fmh_keys
[1].fmr_reserved
)))
1526 * Use an internal memory buffer so that we don't have to copy fsmap
1527 * data to userspace while holding locks. Start by trying to allocate
1528 * up to 128k for the buffer, but fall back to a single page if needed.
1530 count
= min_t(unsigned int, head
.fmh_count
,
1531 131072 / sizeof(struct fsmap
));
1532 recs
= kvcalloc(count
, sizeof(struct fsmap
), GFP_KERNEL
);
1534 count
= min_t(unsigned int, head
.fmh_count
,
1535 PAGE_SIZE
/ sizeof(struct fsmap
));
1536 recs
= kvcalloc(count
, sizeof(struct fsmap
), GFP_KERNEL
);
1541 xhead
.fmh_iflags
= head
.fmh_iflags
;
1542 xfs_fsmap_to_internal(&xhead
.fmh_keys
[0], &head
.fmh_keys
[0]);
1543 xfs_fsmap_to_internal(&xhead
.fmh_keys
[1], &head
.fmh_keys
[1]);
1545 trace_xfs_getfsmap_low_key(ip
->i_mount
, &xhead
.fmh_keys
[0]);
1546 trace_xfs_getfsmap_high_key(ip
->i_mount
, &xhead
.fmh_keys
[1]);
1548 head
.fmh_entries
= 0;
1550 struct fsmap __user
*user_recs
;
1551 struct fsmap
*last_rec
;
1553 user_recs
= &arg
->fmh_recs
[head
.fmh_entries
];
1554 xhead
.fmh_entries
= 0;
1555 xhead
.fmh_count
= min_t(unsigned int, count
,
1556 head
.fmh_count
- head
.fmh_entries
);
1558 /* Run query, record how many entries we got. */
1559 error
= xfs_getfsmap(ip
->i_mount
, &xhead
, recs
);
1563 * There are no more records in the result set. Copy
1564 * whatever we got to userspace and break out.
1570 * The internal memory buffer is full. Copy whatever
1571 * records we got to userspace and go again if we have
1572 * not yet filled the userspace buffer.
1579 head
.fmh_entries
+= xhead
.fmh_entries
;
1580 head
.fmh_oflags
= xhead
.fmh_oflags
;
1583 * If the caller wanted a record count or there aren't any
1584 * new records to return, we're done.
1586 if (head
.fmh_count
== 0 || xhead
.fmh_entries
== 0)
1589 /* Copy all the records we got out to userspace. */
1590 if (copy_to_user(user_recs
, recs
,
1591 xhead
.fmh_entries
* sizeof(struct fsmap
))) {
1596 /* Remember the last record flags we copied to userspace. */
1597 last_rec
= &recs
[xhead
.fmh_entries
- 1];
1598 last_flags
= last_rec
->fmr_flags
;
1600 /* Set up the low key for the next iteration. */
1601 xfs_fsmap_to_internal(&xhead
.fmh_keys
[0], last_rec
);
1602 trace_xfs_getfsmap_low_key(ip
->i_mount
, &xhead
.fmh_keys
[0]);
1603 } while (!done
&& head
.fmh_entries
< head
.fmh_count
);
1606 * If there are no more records in the query result set and we're not
1607 * in counting mode, mark the last record returned with the LAST flag.
1609 if (done
&& head
.fmh_count
> 0 && head
.fmh_entries
> 0) {
1610 struct fsmap __user
*user_rec
;
1612 last_flags
|= FMR_OF_LAST
;
1613 user_rec
= &arg
->fmh_recs
[head
.fmh_entries
- 1];
1615 if (copy_to_user(&user_rec
->fmr_flags
, &last_flags
,
1616 sizeof(last_flags
))) {
1622 /* copy back header */
1623 if (copy_to_user(arg
, &head
, sizeof(struct fsmap_head
))) {
1634 xfs_ioc_scrub_metadata(
1638 struct xfs_scrub_metadata scrub
;
1641 if (!capable(CAP_SYS_ADMIN
))
1644 if (copy_from_user(&scrub
, arg
, sizeof(scrub
)))
1647 error
= xfs_scrub_metadata(file
, &scrub
);
1651 if (copy_to_user(arg
, &scrub
, sizeof(scrub
)))
1661 xfs_inode_t
*ip
, *tip
;
1665 /* Pull information for the target fd */
1666 f
= fdget((int)sxp
->sx_fdtarget
);
1672 if (!(f
.file
->f_mode
& FMODE_WRITE
) ||
1673 !(f
.file
->f_mode
& FMODE_READ
) ||
1674 (f
.file
->f_flags
& O_APPEND
)) {
1679 tmp
= fdget((int)sxp
->sx_fdtmp
);
1685 if (!(tmp
.file
->f_mode
& FMODE_WRITE
) ||
1686 !(tmp
.file
->f_mode
& FMODE_READ
) ||
1687 (tmp
.file
->f_flags
& O_APPEND
)) {
1689 goto out_put_tmp_file
;
1692 if (IS_SWAPFILE(file_inode(f
.file
)) ||
1693 IS_SWAPFILE(file_inode(tmp
.file
))) {
1695 goto out_put_tmp_file
;
1699 * We need to ensure that the fds passed in point to XFS inodes
1700 * before we cast and access them as XFS structures as we have no
1701 * control over what the user passes us here.
1703 if (f
.file
->f_op
!= &xfs_file_operations
||
1704 tmp
.file
->f_op
!= &xfs_file_operations
) {
1706 goto out_put_tmp_file
;
1709 ip
= XFS_I(file_inode(f
.file
));
1710 tip
= XFS_I(file_inode(tmp
.file
));
1712 if (ip
->i_mount
!= tip
->i_mount
) {
1714 goto out_put_tmp_file
;
1717 if (ip
->i_ino
== tip
->i_ino
) {
1719 goto out_put_tmp_file
;
1722 if (xfs_is_shutdown(ip
->i_mount
)) {
1724 goto out_put_tmp_file
;
1727 error
= xfs_swap_extents(ip
, tip
, sxp
);
1739 struct xfs_mount
*mp
,
1740 char __user
*user_label
)
1742 struct xfs_sb
*sbp
= &mp
->m_sb
;
1743 char label
[XFSLABEL_MAX
+ 1];
1746 BUILD_BUG_ON(sizeof(sbp
->sb_fname
) > FSLABEL_MAX
);
1748 /* 1 larger than sb_fname, so this ensures a trailing NUL char */
1749 memset(label
, 0, sizeof(label
));
1750 spin_lock(&mp
->m_sb_lock
);
1751 strncpy(label
, sbp
->sb_fname
, XFSLABEL_MAX
);
1752 spin_unlock(&mp
->m_sb_lock
);
1754 if (copy_to_user(user_label
, label
, sizeof(label
)))
1762 struct xfs_mount
*mp
,
1763 char __user
*newlabel
)
1765 struct xfs_sb
*sbp
= &mp
->m_sb
;
1766 char label
[XFSLABEL_MAX
+ 1];
1770 if (!capable(CAP_SYS_ADMIN
))
1773 * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much
1774 * smaller, at 12 bytes. We copy one more to be sure we find the
1775 * (required) NULL character to test the incoming label length.
1776 * NB: The on disk label doesn't need to be null terminated.
1778 if (copy_from_user(label
, newlabel
, XFSLABEL_MAX
+ 1))
1780 len
= strnlen(label
, XFSLABEL_MAX
+ 1);
1781 if (len
> sizeof(sbp
->sb_fname
))
1784 error
= mnt_want_write_file(filp
);
1788 spin_lock(&mp
->m_sb_lock
);
1789 memset(sbp
->sb_fname
, 0, sizeof(sbp
->sb_fname
));
1790 memcpy(sbp
->sb_fname
, label
, len
);
1791 spin_unlock(&mp
->m_sb_lock
);
1794 * Now we do several things to satisfy userspace.
1795 * In addition to normal logging of the primary superblock, we also
1796 * immediately write these changes to sector zero for the primary, then
1797 * update all backup supers (as xfs_db does for a label change), then
1798 * invalidate the block device page cache. This is so that any prior
1799 * buffered reads from userspace (i.e. from blkid) are invalidated,
1800 * and userspace will see the newly-written label.
1802 error
= xfs_sync_sb_buf(mp
);
1806 * growfs also updates backup supers so lock against that.
1808 mutex_lock(&mp
->m_growlock
);
1809 error
= xfs_update_secondary_sbs(mp
);
1810 mutex_unlock(&mp
->m_growlock
);
1812 invalidate_bdev(mp
->m_ddev_targp
->bt_bdev
);
1815 mnt_drop_write_file(filp
);
1820 xfs_fs_eofblocks_from_user(
1821 struct xfs_fs_eofblocks
*src
,
1822 struct xfs_icwalk
*dst
)
1824 if (src
->eof_version
!= XFS_EOFBLOCKS_VERSION
)
1827 if (src
->eof_flags
& ~XFS_EOF_FLAGS_VALID
)
1830 if (memchr_inv(&src
->pad32
, 0, sizeof(src
->pad32
)) ||
1831 memchr_inv(src
->pad64
, 0, sizeof(src
->pad64
)))
1835 if (src
->eof_flags
& XFS_EOF_FLAGS_SYNC
)
1836 dst
->icw_flags
|= XFS_ICWALK_FLAG_SYNC
;
1837 if (src
->eof_flags
& XFS_EOF_FLAGS_UID
)
1838 dst
->icw_flags
|= XFS_ICWALK_FLAG_UID
;
1839 if (src
->eof_flags
& XFS_EOF_FLAGS_GID
)
1840 dst
->icw_flags
|= XFS_ICWALK_FLAG_GID
;
1841 if (src
->eof_flags
& XFS_EOF_FLAGS_PRID
)
1842 dst
->icw_flags
|= XFS_ICWALK_FLAG_PRID
;
1843 if (src
->eof_flags
& XFS_EOF_FLAGS_MINFILESIZE
)
1844 dst
->icw_flags
|= XFS_ICWALK_FLAG_MINFILESIZE
;
1846 dst
->icw_prid
= src
->eof_prid
;
1847 dst
->icw_min_file_size
= src
->eof_min_file_size
;
1849 dst
->icw_uid
= INVALID_UID
;
1850 if (src
->eof_flags
& XFS_EOF_FLAGS_UID
) {
1851 dst
->icw_uid
= make_kuid(current_user_ns(), src
->eof_uid
);
1852 if (!uid_valid(dst
->icw_uid
))
1856 dst
->icw_gid
= INVALID_GID
;
1857 if (src
->eof_flags
& XFS_EOF_FLAGS_GID
) {
1858 dst
->icw_gid
= make_kgid(current_user_ns(), src
->eof_gid
);
1859 if (!gid_valid(dst
->icw_gid
))
1866 * These long-unused ioctls were removed from the official ioctl API in 5.17,
1867 * but retain these definitions so that we can log warnings about them.
1869 #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
1870 #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
1871 #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
1872 #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
1875 * Note: some of the ioctl's return positive numbers as a
1876 * byte count indicating success, such as readlink_by_handle.
1877 * So we don't "sign flip" like most other routines. This means
1878 * true errors need to be returned as a negative value.
1886 struct inode
*inode
= file_inode(filp
);
1887 struct xfs_inode
*ip
= XFS_I(inode
);
1888 struct xfs_mount
*mp
= ip
->i_mount
;
1889 void __user
*arg
= (void __user
*)p
;
1892 trace_xfs_file_ioctl(ip
);
1896 return xfs_ioc_trim(mp
, arg
);
1897 case FS_IOC_GETFSLABEL
:
1898 return xfs_ioc_getlabel(mp
, arg
);
1899 case FS_IOC_SETFSLABEL
:
1900 return xfs_ioc_setlabel(filp
, mp
, arg
);
1901 case XFS_IOC_ALLOCSP
:
1902 case XFS_IOC_FREESP
:
1903 case XFS_IOC_ALLOCSP64
:
1904 case XFS_IOC_FREESP64
:
1906 "%s should use fallocate; XFS_IOC_{ALLOC,FREE}SP ioctl unsupported",
1909 case XFS_IOC_DIOINFO
: {
1910 struct xfs_buftarg
*target
= xfs_inode_buftarg(ip
);
1913 da
.d_mem
= da
.d_miniosz
= target
->bt_logical_sectorsize
;
1914 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1916 if (copy_to_user(arg
, &da
, sizeof(da
)))
1921 case XFS_IOC_FSBULKSTAT_SINGLE
:
1922 case XFS_IOC_FSBULKSTAT
:
1923 case XFS_IOC_FSINUMBERS
:
1924 return xfs_ioc_fsbulkstat(filp
, cmd
, arg
);
1926 case XFS_IOC_BULKSTAT
:
1927 return xfs_ioc_bulkstat(filp
, cmd
, arg
);
1928 case XFS_IOC_INUMBERS
:
1929 return xfs_ioc_inumbers(mp
, cmd
, arg
);
1931 case XFS_IOC_FSGEOMETRY_V1
:
1932 return xfs_ioc_fsgeometry(mp
, arg
, 3);
1933 case XFS_IOC_FSGEOMETRY_V4
:
1934 return xfs_ioc_fsgeometry(mp
, arg
, 4);
1935 case XFS_IOC_FSGEOMETRY
:
1936 return xfs_ioc_fsgeometry(mp
, arg
, 5);
1938 case XFS_IOC_AG_GEOMETRY
:
1939 return xfs_ioc_ag_geometry(mp
, arg
);
1941 case XFS_IOC_GETVERSION
:
1942 return put_user(inode
->i_generation
, (int __user
*)arg
);
1944 case XFS_IOC_FSGETXATTRA
:
1945 return xfs_ioc_fsgetxattra(ip
, arg
);
1947 case XFS_IOC_GETBMAP
:
1948 case XFS_IOC_GETBMAPA
:
1949 case XFS_IOC_GETBMAPX
:
1950 return xfs_ioc_getbmap(filp
, cmd
, arg
);
1952 case FS_IOC_GETFSMAP
:
1953 return xfs_ioc_getfsmap(ip
, arg
);
1955 case XFS_IOC_SCRUB_METADATA
:
1956 return xfs_ioc_scrub_metadata(filp
, arg
);
1958 case XFS_IOC_FD_TO_HANDLE
:
1959 case XFS_IOC_PATH_TO_HANDLE
:
1960 case XFS_IOC_PATH_TO_FSHANDLE
: {
1961 xfs_fsop_handlereq_t hreq
;
1963 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
1965 return xfs_find_handle(cmd
, &hreq
);
1967 case XFS_IOC_OPEN_BY_HANDLE
: {
1968 xfs_fsop_handlereq_t hreq
;
1970 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1972 return xfs_open_by_handle(filp
, &hreq
);
1975 case XFS_IOC_READLINK_BY_HANDLE
: {
1976 xfs_fsop_handlereq_t hreq
;
1978 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1980 return xfs_readlink_by_handle(filp
, &hreq
);
1982 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1983 return xfs_attrlist_by_handle(filp
, arg
);
1985 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1986 return xfs_attrmulti_by_handle(filp
, arg
);
1988 case XFS_IOC_SWAPEXT
: {
1989 struct xfs_swapext sxp
;
1991 if (copy_from_user(&sxp
, arg
, sizeof(xfs_swapext_t
)))
1993 error
= mnt_want_write_file(filp
);
1996 error
= xfs_ioc_swapext(&sxp
);
1997 mnt_drop_write_file(filp
);
2001 case XFS_IOC_FSCOUNTS
: {
2002 xfs_fsop_counts_t out
;
2004 xfs_fs_counts(mp
, &out
);
2006 if (copy_to_user(arg
, &out
, sizeof(out
)))
2011 case XFS_IOC_SET_RESBLKS
: {
2012 xfs_fsop_resblks_t inout
;
2015 if (!capable(CAP_SYS_ADMIN
))
2018 if (xfs_is_readonly(mp
))
2021 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
2024 error
= mnt_want_write_file(filp
);
2028 /* input parameter is passed in resblks field of structure */
2030 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
2031 mnt_drop_write_file(filp
);
2035 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
2040 case XFS_IOC_GET_RESBLKS
: {
2041 xfs_fsop_resblks_t out
;
2043 if (!capable(CAP_SYS_ADMIN
))
2046 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
2050 if (copy_to_user(arg
, &out
, sizeof(out
)))
2056 case XFS_IOC_FSGROWFSDATA
: {
2057 struct xfs_growfs_data in
;
2059 if (copy_from_user(&in
, arg
, sizeof(in
)))
2062 error
= mnt_want_write_file(filp
);
2065 error
= xfs_growfs_data(mp
, &in
);
2066 mnt_drop_write_file(filp
);
2070 case XFS_IOC_FSGROWFSLOG
: {
2071 struct xfs_growfs_log in
;
2073 if (copy_from_user(&in
, arg
, sizeof(in
)))
2076 error
= mnt_want_write_file(filp
);
2079 error
= xfs_growfs_log(mp
, &in
);
2080 mnt_drop_write_file(filp
);
2084 case XFS_IOC_FSGROWFSRT
: {
2087 if (copy_from_user(&in
, arg
, sizeof(in
)))
2090 error
= mnt_want_write_file(filp
);
2093 error
= xfs_growfs_rt(mp
, &in
);
2094 mnt_drop_write_file(filp
);
2098 case XFS_IOC_GOINGDOWN
: {
2101 if (!capable(CAP_SYS_ADMIN
))
2104 if (get_user(in
, (uint32_t __user
*)arg
))
2107 return xfs_fs_goingdown(mp
, in
);
2110 case XFS_IOC_ERROR_INJECTION
: {
2111 xfs_error_injection_t in
;
2113 if (!capable(CAP_SYS_ADMIN
))
2116 if (copy_from_user(&in
, arg
, sizeof(in
)))
2119 return xfs_errortag_add(mp
, in
.errtag
);
2122 case XFS_IOC_ERROR_CLEARALL
:
2123 if (!capable(CAP_SYS_ADMIN
))
2126 return xfs_errortag_clearall(mp
);
2128 case XFS_IOC_FREE_EOFBLOCKS
: {
2129 struct xfs_fs_eofblocks eofb
;
2130 struct xfs_icwalk icw
;
2132 if (!capable(CAP_SYS_ADMIN
))
2135 if (xfs_is_readonly(mp
))
2138 if (copy_from_user(&eofb
, arg
, sizeof(eofb
)))
2141 error
= xfs_fs_eofblocks_from_user(&eofb
, &icw
);
2145 trace_xfs_ioc_free_eofblocks(mp
, &icw
, _RET_IP_
);
2147 sb_start_write(mp
->m_super
);
2148 error
= xfs_blockgc_free_space(mp
, &icw
);
2149 sb_end_write(mp
->m_super
);