1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
6 #include <linux/mount.h>
7 #include <linux/fsmap.h>
10 #include "xfs_shared.h"
11 #include "xfs_format.h"
12 #include "xfs_log_format.h"
13 #include "xfs_trans_resv.h"
14 #include "xfs_mount.h"
15 #include "xfs_inode.h"
16 #include "xfs_itable.h"
17 #include "xfs_fsops.h"
18 #include "xfs_rtalloc.h"
20 #include "xfs_ioctl.h"
21 #include "xfs_ioctl32.h"
22 #include "xfs_trace.h"
25 #define _NATIVE_IOC(cmd, type) \
26 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
28 #ifdef BROKEN_X86_ALIGNMENT
30 xfs_compat_flock64_copyin(
32 compat_xfs_flock64_t __user *arg32)
34 if (get_user(bf->l_type, &arg32->l_type) ||
35 get_user(bf->l_whence, &arg32->l_whence) ||
36 get_user(bf->l_start, &arg32->l_start) ||
37 get_user(bf->l_len, &arg32->l_len) ||
38 get_user(bf->l_sysid, &arg32->l_sysid) ||
39 get_user(bf->l_pid, &arg32->l_pid) ||
40 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
46 xfs_compat_ioc_fsgeometry_v1(
48 compat_xfs_fsop_geom_v1_t __user *arg32)
50 struct xfs_fsop_geom fsgeo;
52 xfs_fs_geometry(&mp->m_sb, &fsgeo, 3);
53 /* The 32-bit variant simply has some padding at the end */
54 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
60 xfs_compat_growfs_data_copyin(
61 struct xfs_growfs_data *in,
62 compat_xfs_growfs_data_t __user *arg32)
64 if (get_user(in->newblocks, &arg32->newblocks) ||
65 get_user(in->imaxpct, &arg32->imaxpct))
71 xfs_compat_growfs_rt_copyin(
72 struct xfs_growfs_rt *in,
73 compat_xfs_growfs_rt_t __user *arg32)
75 if (get_user(in->newblocks, &arg32->newblocks) ||
76 get_user(in->extsize, &arg32->extsize))
82 xfs_inumbers_fmt_compat(
84 const struct xfs_inogrp *buffer,
88 compat_xfs_inogrp_t __user *p32 = ubuffer;
91 for (i = 0; i < count; i++) {
92 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
93 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
94 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
97 *written = count * sizeof(*p32);
102 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
103 #endif /* BROKEN_X86_ALIGNMENT */
106 xfs_ioctl32_bstime_copyin(
107 xfs_bstime_t *bstime,
108 compat_xfs_bstime_t __user *bstime32)
110 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
112 if (get_user(sec32, &bstime32->tv_sec) ||
113 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
115 bstime->tv_sec = sec32;
119 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
121 xfs_ioctl32_bstat_copyin(
123 compat_xfs_bstat_t __user *bstat32)
125 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
126 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
127 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
128 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
129 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
130 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
131 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
132 get_user(bstat->bs_size, &bstat32->bs_size) ||
133 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
134 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
135 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
136 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
137 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
138 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
139 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
140 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
141 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
142 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
143 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
144 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
145 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
146 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
151 /* XFS_IOC_FSBULKSTAT and friends */
154 xfs_bstime_store_compat(
155 compat_xfs_bstime_t __user *p32,
156 const xfs_bstime_t *p)
161 if (put_user(sec32, &p32->tv_sec) ||
162 put_user(p->tv_nsec, &p32->tv_nsec))
167 /* Return 0 on success or positive error (to xfs_bulkstat()) */
169 xfs_bulkstat_one_fmt_compat(
170 void __user *ubuffer,
173 const xfs_bstat_t *buffer)
175 compat_xfs_bstat_t __user *p32 = ubuffer;
177 if (ubsize < sizeof(*p32))
180 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
181 put_user(buffer->bs_mode, &p32->bs_mode) ||
182 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
183 put_user(buffer->bs_uid, &p32->bs_uid) ||
184 put_user(buffer->bs_gid, &p32->bs_gid) ||
185 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
186 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
187 put_user(buffer->bs_size, &p32->bs_size) ||
188 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
189 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
190 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
191 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
192 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
193 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
194 put_user(buffer->bs_extents, &p32->bs_extents) ||
195 put_user(buffer->bs_gen, &p32->bs_gen) ||
196 put_user(buffer->bs_projid, &p32->bs_projid) ||
197 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
198 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
199 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
200 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
201 put_user(buffer->bs_aextents, &p32->bs_aextents))
204 *ubused = sizeof(*p32);
209 xfs_bulkstat_one_compat(
210 xfs_mount_t *mp, /* mount point for filesystem */
211 xfs_ino_t ino, /* inode number to get data for */
212 void __user *buffer, /* buffer to place output in */
213 int ubsize, /* size of buffer */
214 int *ubused, /* bytes used by me */
215 int *stat) /* BULKSTAT_RV_... */
217 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
218 xfs_bulkstat_one_fmt_compat,
222 /* copied from xfs_ioctl.c */
224 xfs_compat_ioc_bulkstat(
227 compat_xfs_fsop_bulkreq_t __user *p32)
230 xfs_fsop_bulkreq_t bulkreq;
231 int count; /* # of records returned */
232 xfs_ino_t inlast; /* last inode number */
237 * Output structure handling functions. Depending on the command,
238 * either the xfs_bstat and xfs_inogrp structures are written out
239 * to userpace memory via bulkreq.ubuffer. Normally the compat
240 * functions and structure size are the correct ones to use ...
242 inumbers_fmt_pf inumbers_func = xfs_inumbers_fmt_compat;
243 bulkstat_one_pf bs_one_func = xfs_bulkstat_one_compat;
244 size_t bs_one_size = sizeof(struct compat_xfs_bstat);
246 #ifdef CONFIG_X86_X32
247 if (in_x32_syscall()) {
249 * ... but on x32 the input xfs_fsop_bulkreq has pointers
250 * which must be handled in the "compat" (32-bit) way, while
251 * the xfs_bstat and xfs_inogrp structures follow native 64-
252 * bit layout convention. So adjust accordingly, otherwise
253 * the data written out in compat layout will not match what
254 * x32 userspace expects.
256 inumbers_func = xfs_inumbers_fmt;
257 bs_one_func = xfs_bulkstat_one;
258 bs_one_size = sizeof(struct xfs_bstat);
262 /* done = 1 if there are more stats to get and if bulkstat */
263 /* should be called again (unused here, but used in dmapi) */
265 if (!capable(CAP_SYS_ADMIN))
268 if (XFS_FORCED_SHUTDOWN(mp))
271 if (get_user(addr, &p32->lastip))
273 bulkreq.lastip = compat_ptr(addr);
274 if (get_user(bulkreq.icount, &p32->icount) ||
275 get_user(addr, &p32->ubuffer))
277 bulkreq.ubuffer = compat_ptr(addr);
278 if (get_user(addr, &p32->ocount))
280 bulkreq.ocount = compat_ptr(addr);
282 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
285 if ((count = bulkreq.icount) <= 0)
288 if (bulkreq.ubuffer == NULL)
291 if (cmd == XFS_IOC_FSINUMBERS_32) {
292 error = xfs_inumbers(mp, &inlast, &count,
293 bulkreq.ubuffer, inumbers_func);
294 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
297 error = bs_one_func(mp, inlast, bulkreq.ubuffer,
298 bs_one_size, NULL, &res);
299 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
300 error = xfs_bulkstat(mp, &inlast, &count,
301 bs_one_func, bs_one_size,
302 bulkreq.ubuffer, &done);
308 if (bulkreq.ocount != NULL) {
309 if (copy_to_user(bulkreq.lastip, &inlast,
313 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
321 xfs_compat_handlereq_copyin(
322 xfs_fsop_handlereq_t *hreq,
323 compat_xfs_fsop_handlereq_t __user *arg32)
325 compat_xfs_fsop_handlereq_t hreq32;
327 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
330 hreq->fd = hreq32.fd;
331 hreq->path = compat_ptr(hreq32.path);
332 hreq->oflags = hreq32.oflags;
333 hreq->ihandle = compat_ptr(hreq32.ihandle);
334 hreq->ihandlen = hreq32.ihandlen;
335 hreq->ohandle = compat_ptr(hreq32.ohandle);
336 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
341 STATIC struct dentry *
342 xfs_compat_handlereq_to_dentry(
343 struct file *parfilp,
344 compat_xfs_fsop_handlereq_t *hreq)
346 return xfs_handle_to_dentry(parfilp,
347 compat_ptr(hreq->ihandle), hreq->ihandlen);
351 xfs_compat_attrlist_by_handle(
352 struct file *parfilp,
356 attrlist_cursor_kern_t *cursor;
357 compat_xfs_fsop_attrlist_handlereq_t __user *p = arg;
358 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
359 struct dentry *dentry;
362 if (!capable(CAP_SYS_ADMIN))
364 if (copy_from_user(&al_hreq, arg,
365 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
367 if (al_hreq.buflen < sizeof(struct attrlist) ||
368 al_hreq.buflen > XFS_XATTR_LIST_MAX)
372 * Reject flags, only allow namespaces.
374 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
377 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
379 return PTR_ERR(dentry);
382 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
386 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
387 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
388 al_hreq.flags, cursor);
392 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
397 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
408 xfs_compat_attrmulti_by_handle(
409 struct file *parfilp,
413 compat_xfs_attr_multiop_t *ops;
414 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
415 struct dentry *dentry;
416 unsigned int i, size;
417 unsigned char *attr_name;
419 if (!capable(CAP_SYS_ADMIN))
421 if (copy_from_user(&am_hreq, arg,
422 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
426 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
429 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
431 return PTR_ERR(dentry);
434 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
435 if (!size || size > 16 * PAGE_SIZE)
438 ops = memdup_user(compat_ptr(am_hreq.ops), size);
440 error = PTR_ERR(ops);
445 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
450 for (i = 0; i < am_hreq.opcount; i++) {
451 ops[i].am_error = strncpy_from_user((char *)attr_name,
452 compat_ptr(ops[i].am_attrname),
454 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
456 if (ops[i].am_error < 0)
459 switch (ops[i].am_opcode) {
461 ops[i].am_error = xfs_attrmulti_attr_get(
462 d_inode(dentry), attr_name,
463 compat_ptr(ops[i].am_attrvalue),
464 &ops[i].am_length, ops[i].am_flags);
467 ops[i].am_error = mnt_want_write_file(parfilp);
470 ops[i].am_error = xfs_attrmulti_attr_set(
471 d_inode(dentry), attr_name,
472 compat_ptr(ops[i].am_attrvalue),
473 ops[i].am_length, ops[i].am_flags);
474 mnt_drop_write_file(parfilp);
477 ops[i].am_error = mnt_want_write_file(parfilp);
480 ops[i].am_error = xfs_attrmulti_attr_remove(
481 d_inode(dentry), attr_name,
483 mnt_drop_write_file(parfilp);
486 ops[i].am_error = -EINVAL;
490 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
502 xfs_compat_fssetdm_by_handle(
503 struct file *parfilp,
507 struct fsdmidata fsd;
508 compat_xfs_fsop_setdm_handlereq_t dmhreq;
509 struct dentry *dentry;
511 if (!capable(CAP_MKNOD))
513 if (copy_from_user(&dmhreq, arg,
514 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
517 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
519 return PTR_ERR(dentry);
521 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
526 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
531 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
540 xfs_file_compat_ioctl(
545 struct inode *inode = file_inode(filp);
546 struct xfs_inode *ip = XFS_I(inode);
547 struct xfs_mount *mp = ip->i_mount;
548 void __user *arg = (void __user *)p;
551 trace_xfs_file_compat_ioctl(ip);
554 /* No size or alignment issues on any arch */
555 case XFS_IOC_DIOINFO:
556 case XFS_IOC_FSGEOMETRY_V4:
557 case XFS_IOC_FSGEOMETRY:
558 case XFS_IOC_AG_GEOMETRY:
559 case XFS_IOC_FSGETXATTR:
560 case XFS_IOC_FSSETXATTR:
561 case XFS_IOC_FSGETXATTRA:
562 case XFS_IOC_FSSETDM:
563 case XFS_IOC_GETBMAP:
564 case XFS_IOC_GETBMAPA:
565 case XFS_IOC_GETBMAPX:
566 case XFS_IOC_FSCOUNTS:
567 case XFS_IOC_SET_RESBLKS:
568 case XFS_IOC_GET_RESBLKS:
569 case XFS_IOC_FSGROWFSLOG:
570 case XFS_IOC_GOINGDOWN:
571 case XFS_IOC_ERROR_INJECTION:
572 case XFS_IOC_ERROR_CLEARALL:
573 case FS_IOC_GETFSMAP:
574 case XFS_IOC_SCRUB_METADATA:
575 return xfs_file_ioctl(filp, cmd, p);
576 #if !defined(BROKEN_X86_ALIGNMENT) || defined(CONFIG_X86_X32)
578 * These are handled fine if no alignment issues. To support x32
579 * which uses native 64-bit alignment we must emit these cases in
580 * addition to the ia-32 compat set below.
582 case XFS_IOC_ALLOCSP:
585 case XFS_IOC_UNRESVSP:
586 case XFS_IOC_ALLOCSP64:
587 case XFS_IOC_FREESP64:
588 case XFS_IOC_RESVSP64:
589 case XFS_IOC_UNRESVSP64:
590 case XFS_IOC_FSGEOMETRY_V1:
591 case XFS_IOC_FSGROWFSDATA:
592 case XFS_IOC_FSGROWFSRT:
593 case XFS_IOC_ZERO_RANGE:
594 #ifdef CONFIG_X86_X32
596 * x32 special: this gets a different cmd number from the ia-32 compat
597 * case below; the associated data will match native 64-bit alignment.
599 case XFS_IOC_SWAPEXT:
601 return xfs_file_ioctl(filp, cmd, p);
603 #if defined(BROKEN_X86_ALIGNMENT)
604 case XFS_IOC_ALLOCSP_32:
605 case XFS_IOC_FREESP_32:
606 case XFS_IOC_ALLOCSP64_32:
607 case XFS_IOC_FREESP64_32:
608 case XFS_IOC_RESVSP_32:
609 case XFS_IOC_UNRESVSP_32:
610 case XFS_IOC_RESVSP64_32:
611 case XFS_IOC_UNRESVSP64_32:
612 case XFS_IOC_ZERO_RANGE_32: {
613 struct xfs_flock64 bf;
615 if (xfs_compat_flock64_copyin(&bf, arg))
617 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
618 return xfs_ioc_space(filp, cmd, &bf);
620 case XFS_IOC_FSGEOMETRY_V1_32:
621 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
622 case XFS_IOC_FSGROWFSDATA_32: {
623 struct xfs_growfs_data in;
625 if (xfs_compat_growfs_data_copyin(&in, arg))
627 error = mnt_want_write_file(filp);
630 error = xfs_growfs_data(mp, &in);
631 mnt_drop_write_file(filp);
634 case XFS_IOC_FSGROWFSRT_32: {
635 struct xfs_growfs_rt in;
637 if (xfs_compat_growfs_rt_copyin(&in, arg))
639 error = mnt_want_write_file(filp);
642 error = xfs_growfs_rt(mp, &in);
643 mnt_drop_write_file(filp);
647 /* long changes size, but xfs only copiese out 32 bits */
648 case XFS_IOC_GETXFLAGS_32:
649 case XFS_IOC_SETXFLAGS_32:
650 case XFS_IOC_GETVERSION_32:
651 cmd = _NATIVE_IOC(cmd, long);
652 return xfs_file_ioctl(filp, cmd, p);
653 case XFS_IOC_SWAPEXT_32: {
654 struct xfs_swapext sxp;
655 struct compat_xfs_swapext __user *sxu = arg;
657 /* Bulk copy in up to the sx_stat field, then copy bstat */
658 if (copy_from_user(&sxp, sxu,
659 offsetof(struct xfs_swapext, sx_stat)) ||
660 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
662 error = mnt_want_write_file(filp);
665 error = xfs_ioc_swapext(&sxp);
666 mnt_drop_write_file(filp);
669 case XFS_IOC_FSBULKSTAT_32:
670 case XFS_IOC_FSBULKSTAT_SINGLE_32:
671 case XFS_IOC_FSINUMBERS_32:
672 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
673 case XFS_IOC_FD_TO_HANDLE_32:
674 case XFS_IOC_PATH_TO_HANDLE_32:
675 case XFS_IOC_PATH_TO_FSHANDLE_32: {
676 struct xfs_fsop_handlereq hreq;
678 if (xfs_compat_handlereq_copyin(&hreq, arg))
680 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
681 return xfs_find_handle(cmd, &hreq);
683 case XFS_IOC_OPEN_BY_HANDLE_32: {
684 struct xfs_fsop_handlereq hreq;
686 if (xfs_compat_handlereq_copyin(&hreq, arg))
688 return xfs_open_by_handle(filp, &hreq);
690 case XFS_IOC_READLINK_BY_HANDLE_32: {
691 struct xfs_fsop_handlereq hreq;
693 if (xfs_compat_handlereq_copyin(&hreq, arg))
695 return xfs_readlink_by_handle(filp, &hreq);
697 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
698 return xfs_compat_attrlist_by_handle(filp, arg);
699 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
700 return xfs_compat_attrmulti_by_handle(filp, arg);
701 case XFS_IOC_FSSETDM_BY_HANDLE_32:
702 return xfs_compat_fssetdm_by_handle(filp, arg);