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"
21 #include "xfs_ioctl.h"
22 #include "xfs_ioctl32.h"
23 #include "xfs_trace.h"
26 #define _NATIVE_IOC(cmd, type) \
27 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
29 #ifdef BROKEN_X86_ALIGNMENT
31 xfs_compat_ioc_fsgeometry_v1(
33 compat_xfs_fsop_geom_v1_t __user *arg32)
35 struct xfs_fsop_geom fsgeo;
37 xfs_fs_geometry(mp, &fsgeo, 3);
38 /* The 32-bit variant simply has some padding at the end */
39 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
45 xfs_compat_growfs_data_copyin(
46 struct xfs_growfs_data *in,
47 compat_xfs_growfs_data_t __user *arg32)
49 if (get_user(in->newblocks, &arg32->newblocks) ||
50 get_user(in->imaxpct, &arg32->imaxpct))
56 xfs_compat_growfs_rt_copyin(
57 struct xfs_growfs_rt *in,
58 compat_xfs_growfs_rt_t __user *arg32)
60 if (get_user(in->newblocks, &arg32->newblocks) ||
61 get_user(in->extsize, &arg32->extsize))
67 xfs_fsinumbers_fmt_compat(
68 struct xfs_ibulk *breq,
69 const struct xfs_inumbers *ig)
71 struct compat_xfs_inogrp __user *p32 = breq->ubuffer;
72 struct xfs_inogrp ig1;
73 struct xfs_inogrp *igrp = &ig1;
75 xfs_inumbers_to_inogrp(&ig1, ig);
77 if (put_user(igrp->xi_startino, &p32->xi_startino) ||
78 put_user(igrp->xi_alloccount, &p32->xi_alloccount) ||
79 put_user(igrp->xi_allocmask, &p32->xi_allocmask))
82 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp));
86 #define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
87 #endif /* BROKEN_X86_ALIGNMENT */
90 xfs_ioctl32_bstime_copyin(
92 compat_xfs_bstime_t __user *bstime32)
94 old_time32_t sec32; /* tv_sec differs on 64 vs. 32 */
96 if (get_user(sec32, &bstime32->tv_sec) ||
97 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
99 bstime->tv_sec = sec32;
104 * struct xfs_bstat has differing alignment on intel, & bstime_t sizes
108 xfs_ioctl32_bstat_copyin(
109 struct xfs_bstat *bstat,
110 struct compat_xfs_bstat __user *bstat32)
112 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
113 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
114 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
115 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
116 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
117 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
118 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
119 get_user(bstat->bs_size, &bstat32->bs_size) ||
120 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
121 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
122 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
123 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
124 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
125 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
126 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
127 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
128 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
129 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
130 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
131 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
132 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
133 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
138 /* XFS_IOC_FSBULKSTAT and friends */
141 xfs_bstime_store_compat(
142 compat_xfs_bstime_t __user *p32,
143 const xfs_bstime_t *p)
148 if (put_user(sec32, &p32->tv_sec) ||
149 put_user(p->tv_nsec, &p32->tv_nsec))
154 /* Return 0 on success or positive error (to xfs_bulkstat()) */
156 xfs_fsbulkstat_one_fmt_compat(
157 struct xfs_ibulk *breq,
158 const struct xfs_bulkstat *bstat)
160 struct compat_xfs_bstat __user *p32 = breq->ubuffer;
161 struct xfs_bstat bs1;
162 struct xfs_bstat *buffer = &bs1;
164 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
166 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
167 put_user(buffer->bs_mode, &p32->bs_mode) ||
168 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
169 put_user(buffer->bs_uid, &p32->bs_uid) ||
170 put_user(buffer->bs_gid, &p32->bs_gid) ||
171 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
172 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
173 put_user(buffer->bs_size, &p32->bs_size) ||
174 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
175 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
176 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
177 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
178 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
179 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
180 put_user(buffer->bs_extents, &p32->bs_extents) ||
181 put_user(buffer->bs_gen, &p32->bs_gen) ||
182 put_user(buffer->bs_projid, &p32->bs_projid) ||
183 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
184 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
185 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
186 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
187 put_user(buffer->bs_aextents, &p32->bs_aextents))
190 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
193 /* copied from xfs_ioctl.c */
195 xfs_compat_ioc_fsbulkstat(
198 struct compat_xfs_fsop_bulkreq __user *p32)
200 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
202 struct xfs_fsop_bulkreq bulkreq;
203 struct xfs_ibulk breq = {
205 .mnt_userns = file_mnt_user_ns(file),
212 * Output structure handling functions. Depending on the command,
213 * either the xfs_bstat and xfs_inogrp structures are written out
214 * to userpace memory via bulkreq.ubuffer. Normally the compat
215 * functions and structure size are the correct ones to use ...
217 inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat;
218 bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
220 #ifdef CONFIG_X86_X32
221 if (in_x32_syscall()) {
223 * ... but on x32 the input xfs_fsop_bulkreq has pointers
224 * which must be handled in the "compat" (32-bit) way, while
225 * the xfs_bstat and xfs_inogrp structures follow native 64-
226 * bit layout convention. So adjust accordingly, otherwise
227 * the data written out in compat layout will not match what
228 * x32 userspace expects.
230 inumbers_func = xfs_fsinumbers_fmt;
231 bs_one_func = xfs_fsbulkstat_one_fmt;
235 /* done = 1 if there are more stats to get and if bulkstat */
236 /* should be called again (unused here, but used in dmapi) */
238 if (!capable(CAP_SYS_ADMIN))
241 if (xfs_is_shutdown(mp))
244 if (get_user(addr, &p32->lastip))
246 bulkreq.lastip = compat_ptr(addr);
247 if (get_user(bulkreq.icount, &p32->icount) ||
248 get_user(addr, &p32->ubuffer))
250 bulkreq.ubuffer = compat_ptr(addr);
251 if (get_user(addr, &p32->ocount))
253 bulkreq.ocount = compat_ptr(addr);
255 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
258 if (bulkreq.icount <= 0)
261 if (bulkreq.ubuffer == NULL)
264 breq.ubuffer = bulkreq.ubuffer;
265 breq.icount = bulkreq.icount;
268 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
269 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
270 * that *lastip contains either zero or the number of the last inode to
271 * be examined by the previous call and return results starting with
272 * the next inode after that. The new bulk request back end functions
273 * take the inode to start with, so we have to compute the startino
274 * parameter from lastino to maintain correct function. lastino == 0
275 * is a special case because it has traditionally meant "first inode
278 if (cmd == XFS_IOC_FSINUMBERS_32) {
279 breq.startino = lastino ? lastino + 1 : 0;
280 error = xfs_inumbers(&breq, inumbers_func);
281 lastino = breq.startino - 1;
282 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
283 breq.startino = lastino;
285 error = xfs_bulkstat_one(&breq, bs_one_func);
286 lastino = breq.startino;
287 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
288 breq.startino = lastino ? lastino + 1 : 0;
289 error = xfs_bulkstat(&breq, bs_one_func);
290 lastino = breq.startino - 1;
297 if (bulkreq.lastip != NULL &&
298 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
301 if (bulkreq.ocount != NULL &&
302 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
309 xfs_compat_handlereq_copyin(
310 xfs_fsop_handlereq_t *hreq,
311 compat_xfs_fsop_handlereq_t __user *arg32)
313 compat_xfs_fsop_handlereq_t hreq32;
315 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
318 hreq->fd = hreq32.fd;
319 hreq->path = compat_ptr(hreq32.path);
320 hreq->oflags = hreq32.oflags;
321 hreq->ihandle = compat_ptr(hreq32.ihandle);
322 hreq->ihandlen = hreq32.ihandlen;
323 hreq->ohandle = compat_ptr(hreq32.ohandle);
324 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
329 STATIC struct dentry *
330 xfs_compat_handlereq_to_dentry(
331 struct file *parfilp,
332 compat_xfs_fsop_handlereq_t *hreq)
334 return xfs_handle_to_dentry(parfilp,
335 compat_ptr(hreq->ihandle), hreq->ihandlen);
339 xfs_compat_attrlist_by_handle(
340 struct file *parfilp,
341 compat_xfs_fsop_attrlist_handlereq_t __user *p)
343 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
344 struct dentry *dentry;
347 if (!capable(CAP_SYS_ADMIN))
349 if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
352 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
354 return PTR_ERR(dentry);
356 error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)),
357 compat_ptr(al_hreq.buffer), al_hreq.buflen,
358 al_hreq.flags, &p->pos);
364 xfs_compat_attrmulti_by_handle(
365 struct file *parfilp,
369 compat_xfs_attr_multiop_t *ops;
370 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
371 struct dentry *dentry;
372 unsigned int i, size;
374 if (!capable(CAP_SYS_ADMIN))
376 if (copy_from_user(&am_hreq, arg,
377 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
381 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
384 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
386 return PTR_ERR(dentry);
389 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
390 if (!size || size > 16 * PAGE_SIZE)
393 ops = memdup_user(compat_ptr(am_hreq.ops), size);
395 error = PTR_ERR(ops);
400 for (i = 0; i < am_hreq.opcount; i++) {
401 ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
402 d_inode(dentry), ops[i].am_opcode,
403 compat_ptr(ops[i].am_attrname),
404 compat_ptr(ops[i].am_attrvalue),
405 &ops[i].am_length, ops[i].am_flags);
408 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
418 xfs_file_compat_ioctl(
423 struct inode *inode = file_inode(filp);
424 struct xfs_inode *ip = XFS_I(inode);
425 void __user *arg = compat_ptr(p);
428 trace_xfs_file_compat_ioctl(ip);
431 #if defined(BROKEN_X86_ALIGNMENT)
432 case XFS_IOC_FSGEOMETRY_V1_32:
433 return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg);
434 case XFS_IOC_FSGROWFSDATA_32: {
435 struct xfs_growfs_data in;
437 if (xfs_compat_growfs_data_copyin(&in, arg))
439 error = mnt_want_write_file(filp);
442 error = xfs_growfs_data(ip->i_mount, &in);
443 mnt_drop_write_file(filp);
446 case XFS_IOC_FSGROWFSRT_32: {
447 struct xfs_growfs_rt in;
449 if (xfs_compat_growfs_rt_copyin(&in, arg))
451 error = mnt_want_write_file(filp);
454 error = xfs_growfs_rt(ip->i_mount, &in);
455 mnt_drop_write_file(filp);
459 /* long changes size, but xfs only copiese out 32 bits */
460 case XFS_IOC_GETVERSION_32:
461 cmd = _NATIVE_IOC(cmd, long);
462 return xfs_file_ioctl(filp, cmd, p);
463 case XFS_IOC_SWAPEXT_32: {
464 struct xfs_swapext sxp;
465 struct compat_xfs_swapext __user *sxu = arg;
467 /* Bulk copy in up to the sx_stat field, then copy bstat */
468 if (copy_from_user(&sxp, sxu,
469 offsetof(struct xfs_swapext, sx_stat)) ||
470 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
472 error = mnt_want_write_file(filp);
475 error = xfs_ioc_swapext(&sxp);
476 mnt_drop_write_file(filp);
479 case XFS_IOC_FSBULKSTAT_32:
480 case XFS_IOC_FSBULKSTAT_SINGLE_32:
481 case XFS_IOC_FSINUMBERS_32:
482 return xfs_compat_ioc_fsbulkstat(filp, cmd, arg);
483 case XFS_IOC_FD_TO_HANDLE_32:
484 case XFS_IOC_PATH_TO_HANDLE_32:
485 case XFS_IOC_PATH_TO_FSHANDLE_32: {
486 struct xfs_fsop_handlereq hreq;
488 if (xfs_compat_handlereq_copyin(&hreq, arg))
490 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
491 return xfs_find_handle(cmd, &hreq);
493 case XFS_IOC_OPEN_BY_HANDLE_32: {
494 struct xfs_fsop_handlereq hreq;
496 if (xfs_compat_handlereq_copyin(&hreq, arg))
498 return xfs_open_by_handle(filp, &hreq);
500 case XFS_IOC_READLINK_BY_HANDLE_32: {
501 struct xfs_fsop_handlereq hreq;
503 if (xfs_compat_handlereq_copyin(&hreq, arg))
505 return xfs_readlink_by_handle(filp, &hreq);
507 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
508 return xfs_compat_attrlist_by_handle(filp, arg);
509 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
510 return xfs_compat_attrmulti_by_handle(filp, arg);
512 /* try the native version */
513 return xfs_file_ioctl(filp, cmd, (unsigned long)arg);