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_iwalk.h"
17 #include "xfs_itable.h"
18 #include "xfs_fsops.h"
19 #include "xfs_rtalloc.h"
20 #include "xfs_da_format.h"
21 #include "xfs_da_btree.h"
23 #include "xfs_ioctl.h"
24 #include "xfs_ioctl32.h"
25 #include "xfs_trace.h"
27 #include "xfs_handle.h"
29 #define _NATIVE_IOC(cmd, type) \
30 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
32 #ifdef BROKEN_X86_ALIGNMENT
34 xfs_compat_ioc_fsgeometry_v1(
36 compat_xfs_fsop_geom_v1_t __user *arg32)
38 struct xfs_fsop_geom fsgeo;
40 xfs_fs_geometry(mp, &fsgeo, 3);
41 /* The 32-bit variant simply has some padding at the end */
42 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
48 xfs_compat_growfs_data_copyin(
49 struct xfs_growfs_data *in,
50 compat_xfs_growfs_data_t __user *arg32)
52 if (get_user(in->newblocks, &arg32->newblocks) ||
53 get_user(in->imaxpct, &arg32->imaxpct))
59 xfs_compat_growfs_rt_copyin(
60 struct xfs_growfs_rt *in,
61 compat_xfs_growfs_rt_t __user *arg32)
63 if (get_user(in->newblocks, &arg32->newblocks) ||
64 get_user(in->extsize, &arg32->extsize))
70 xfs_fsinumbers_fmt_compat(
71 struct xfs_ibulk *breq,
72 const struct xfs_inumbers *ig)
74 struct compat_xfs_inogrp __user *p32 = breq->ubuffer;
75 struct xfs_inogrp ig1;
76 struct xfs_inogrp *igrp = &ig1;
78 xfs_inumbers_to_inogrp(&ig1, ig);
80 if (put_user(igrp->xi_startino, &p32->xi_startino) ||
81 put_user(igrp->xi_alloccount, &p32->xi_alloccount) ||
82 put_user(igrp->xi_allocmask, &p32->xi_allocmask))
85 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp));
89 #define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
90 #endif /* BROKEN_X86_ALIGNMENT */
93 xfs_ioctl32_bstime_copyin(
95 compat_xfs_bstime_t __user *bstime32)
97 old_time32_t sec32; /* tv_sec differs on 64 vs. 32 */
99 if (get_user(sec32, &bstime32->tv_sec) ||
100 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
102 bstime->tv_sec = sec32;
107 * struct xfs_bstat has differing alignment on intel, & bstime_t sizes
111 xfs_ioctl32_bstat_copyin(
112 struct xfs_bstat *bstat,
113 struct compat_xfs_bstat __user *bstat32)
115 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
116 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
117 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
118 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
119 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
120 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
121 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
122 get_user(bstat->bs_size, &bstat32->bs_size) ||
123 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
124 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
125 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
126 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
127 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
128 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
129 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
130 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
131 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
132 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
133 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
134 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
135 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
136 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
141 /* XFS_IOC_FSBULKSTAT and friends */
144 xfs_bstime_store_compat(
145 compat_xfs_bstime_t __user *p32,
146 const xfs_bstime_t *p)
151 if (put_user(sec32, &p32->tv_sec) ||
152 put_user(p->tv_nsec, &p32->tv_nsec))
157 /* Return 0 on success or positive error (to xfs_bulkstat()) */
159 xfs_fsbulkstat_one_fmt_compat(
160 struct xfs_ibulk *breq,
161 const struct xfs_bulkstat *bstat)
163 struct compat_xfs_bstat __user *p32 = breq->ubuffer;
164 struct xfs_bstat bs1;
165 struct xfs_bstat *buffer = &bs1;
167 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
169 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
170 put_user(buffer->bs_mode, &p32->bs_mode) ||
171 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
172 put_user(buffer->bs_uid, &p32->bs_uid) ||
173 put_user(buffer->bs_gid, &p32->bs_gid) ||
174 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
175 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
176 put_user(buffer->bs_size, &p32->bs_size) ||
177 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
178 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
179 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
180 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
181 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
182 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
183 put_user(buffer->bs_extents, &p32->bs_extents) ||
184 put_user(buffer->bs_gen, &p32->bs_gen) ||
185 put_user(buffer->bs_projid, &p32->bs_projid) ||
186 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
187 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
188 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
189 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
190 put_user(buffer->bs_aextents, &p32->bs_aextents))
193 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
196 /* copied from xfs_ioctl.c */
198 xfs_compat_ioc_fsbulkstat(
201 struct compat_xfs_fsop_bulkreq __user *p32)
203 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
205 struct xfs_fsop_bulkreq bulkreq;
206 struct xfs_ibulk breq = {
208 .idmap = file_mnt_idmap(file),
215 * Output structure handling functions. Depending on the command,
216 * either the xfs_bstat and xfs_inogrp structures are written out
217 * to userpace memory via bulkreq.ubuffer. Normally the compat
218 * functions and structure size are the correct ones to use ...
220 inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat;
221 bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
223 #ifdef CONFIG_X86_X32_ABI
224 if (in_x32_syscall()) {
226 * ... but on x32 the input xfs_fsop_bulkreq has pointers
227 * which must be handled in the "compat" (32-bit) way, while
228 * the xfs_bstat and xfs_inogrp structures follow native 64-
229 * bit layout convention. So adjust accordingly, otherwise
230 * the data written out in compat layout will not match what
231 * x32 userspace expects.
233 inumbers_func = xfs_fsinumbers_fmt;
234 bs_one_func = xfs_fsbulkstat_one_fmt;
238 /* done = 1 if there are more stats to get and if bulkstat */
239 /* should be called again (unused here, but used in dmapi) */
241 if (!capable(CAP_SYS_ADMIN))
244 if (xfs_is_shutdown(mp))
247 if (get_user(addr, &p32->lastip))
249 bulkreq.lastip = compat_ptr(addr);
250 if (get_user(bulkreq.icount, &p32->icount) ||
251 get_user(addr, &p32->ubuffer))
253 bulkreq.ubuffer = compat_ptr(addr);
254 if (get_user(addr, &p32->ocount))
256 bulkreq.ocount = compat_ptr(addr);
258 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
261 if (bulkreq.icount <= 0)
264 if (bulkreq.ubuffer == NULL)
267 breq.ubuffer = bulkreq.ubuffer;
268 breq.icount = bulkreq.icount;
271 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
272 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
273 * that *lastip contains either zero or the number of the last inode to
274 * be examined by the previous call and return results starting with
275 * the next inode after that. The new bulk request back end functions
276 * take the inode to start with, so we have to compute the startino
277 * parameter from lastino to maintain correct function. lastino == 0
278 * is a special case because it has traditionally meant "first inode
281 if (cmd == XFS_IOC_FSINUMBERS_32) {
282 breq.startino = lastino ? lastino + 1 : 0;
283 error = xfs_inumbers(&breq, inumbers_func);
284 lastino = breq.startino - 1;
285 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
286 breq.startino = lastino;
288 error = xfs_bulkstat_one(&breq, bs_one_func);
289 lastino = breq.startino;
290 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
291 breq.startino = lastino ? lastino + 1 : 0;
292 error = xfs_bulkstat(&breq, bs_one_func);
293 lastino = breq.startino - 1;
300 if (bulkreq.lastip != NULL &&
301 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
304 if (bulkreq.ocount != NULL &&
305 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
312 xfs_compat_handlereq_copyin(
313 xfs_fsop_handlereq_t *hreq,
314 compat_xfs_fsop_handlereq_t __user *arg32)
316 compat_xfs_fsop_handlereq_t hreq32;
318 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
321 hreq->fd = hreq32.fd;
322 hreq->path = compat_ptr(hreq32.path);
323 hreq->oflags = hreq32.oflags;
324 hreq->ihandle = compat_ptr(hreq32.ihandle);
325 hreq->ihandlen = hreq32.ihandlen;
326 hreq->ohandle = compat_ptr(hreq32.ohandle);
327 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
332 STATIC struct dentry *
333 xfs_compat_handlereq_to_dentry(
334 struct file *parfilp,
335 compat_xfs_fsop_handlereq_t *hreq)
337 return xfs_handle_to_dentry(parfilp,
338 compat_ptr(hreq->ihandle), hreq->ihandlen);
342 xfs_compat_attrlist_by_handle(
343 struct file *parfilp,
344 compat_xfs_fsop_attrlist_handlereq_t __user *p)
346 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
347 struct dentry *dentry;
350 if (!capable(CAP_SYS_ADMIN))
352 if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
355 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
357 return PTR_ERR(dentry);
359 error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)),
360 compat_ptr(al_hreq.buffer), al_hreq.buflen,
361 al_hreq.flags, &p->pos);
367 xfs_compat_attrmulti_by_handle(
368 struct file *parfilp,
372 compat_xfs_attr_multiop_t *ops;
373 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
374 struct dentry *dentry;
375 unsigned int i, size;
377 if (!capable(CAP_SYS_ADMIN))
379 if (copy_from_user(&am_hreq, arg,
380 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
384 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
387 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
389 return PTR_ERR(dentry);
392 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
393 if (!size || size > 16 * PAGE_SIZE)
396 ops = memdup_user(compat_ptr(am_hreq.ops), size);
398 error = PTR_ERR(ops);
403 for (i = 0; i < am_hreq.opcount; i++) {
404 ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
405 d_inode(dentry), ops[i].am_opcode,
406 compat_ptr(ops[i].am_attrname),
407 compat_ptr(ops[i].am_attrvalue),
408 &ops[i].am_length, ops[i].am_flags);
411 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
421 xfs_file_compat_ioctl(
426 struct inode *inode = file_inode(filp);
427 struct xfs_inode *ip = XFS_I(inode);
428 void __user *arg = compat_ptr(p);
431 trace_xfs_file_compat_ioctl(ip);
434 #if defined(BROKEN_X86_ALIGNMENT)
435 case XFS_IOC_FSGEOMETRY_V1_32:
436 return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg);
437 case XFS_IOC_FSGROWFSDATA_32: {
438 struct xfs_growfs_data in;
440 if (xfs_compat_growfs_data_copyin(&in, arg))
442 error = mnt_want_write_file(filp);
445 error = xfs_growfs_data(ip->i_mount, &in);
446 mnt_drop_write_file(filp);
449 case XFS_IOC_FSGROWFSRT_32: {
450 struct xfs_growfs_rt in;
452 if (xfs_compat_growfs_rt_copyin(&in, arg))
454 error = mnt_want_write_file(filp);
457 error = xfs_growfs_rt(ip->i_mount, &in);
458 mnt_drop_write_file(filp);
462 /* long changes size, but xfs only copiese out 32 bits */
463 case XFS_IOC_GETVERSION_32:
464 cmd = _NATIVE_IOC(cmd, long);
465 return xfs_file_ioctl(filp, cmd, p);
466 case XFS_IOC_SWAPEXT_32: {
467 struct xfs_swapext sxp;
468 struct compat_xfs_swapext __user *sxu = arg;
470 /* Bulk copy in up to the sx_stat field, then copy bstat */
471 if (copy_from_user(&sxp, sxu,
472 offsetof(struct xfs_swapext, sx_stat)) ||
473 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
475 error = mnt_want_write_file(filp);
478 error = xfs_ioc_swapext(&sxp);
479 mnt_drop_write_file(filp);
482 case XFS_IOC_FSBULKSTAT_32:
483 case XFS_IOC_FSBULKSTAT_SINGLE_32:
484 case XFS_IOC_FSINUMBERS_32:
485 return xfs_compat_ioc_fsbulkstat(filp, cmd, arg);
486 case XFS_IOC_FD_TO_HANDLE_32:
487 case XFS_IOC_PATH_TO_HANDLE_32:
488 case XFS_IOC_PATH_TO_FSHANDLE_32: {
489 struct xfs_fsop_handlereq hreq;
491 if (xfs_compat_handlereq_copyin(&hreq, arg))
493 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
494 return xfs_find_handle(cmd, &hreq);
496 case XFS_IOC_OPEN_BY_HANDLE_32: {
497 struct xfs_fsop_handlereq hreq;
499 if (xfs_compat_handlereq_copyin(&hreq, arg))
501 return xfs_open_by_handle(filp, &hreq);
503 case XFS_IOC_READLINK_BY_HANDLE_32: {
504 struct xfs_fsop_handlereq hreq;
506 if (xfs_compat_handlereq_copyin(&hreq, arg))
508 return xfs_readlink_by_handle(filp, &hreq);
510 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
511 return xfs_compat_attrlist_by_handle(filp, arg);
512 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
513 return xfs_compat_attrmulti_by_handle(filp, arg);
515 /* try the native version */
516 return xfs_file_ioctl(filp, cmd, (unsigned long)arg);