1 /*
2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #include <linux/compat.h>
19 #include <linux/init.h>
20 #include <linux/ioctl.h>
21 #include <linux/syscalls.h>
22 #include <linux/types.h>
23 #include <linux/fs.h>
24 #include <asm/uaccess.h>
25 #include "xfs.h"
26 #include "xfs_fs.h"
27 #include "xfs_bit.h"
28 #include "xfs_log.h"
29 #include "xfs_inum.h"
30 #include "xfs_trans.h"
31 #include "xfs_sb.h"
32 #include "xfs_ag.h"
33 #include "xfs_dir2.h"
34 #include "xfs_dmapi.h"
35 #include "xfs_mount.h"
36 #include "xfs_bmap_btree.h"
37 #include "xfs_attr_sf.h"
38 #include "xfs_dir2_sf.h"
39 #include "xfs_vfs.h"
40 #include "xfs_vnode.h"
41 #include "xfs_dinode.h"
42 #include "xfs_inode.h"
43 #include "xfs_itable.h"
44 #include "xfs_error.h"
45 #include "xfs_dfrag.h"
46 #include "xfs_vnodeops.h"
47 #include "xfs_ioctl32.h"
48
49 #define _NATIVE_IOC(cmd, type) \
50 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
51
52 #if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
53 #define BROKEN_X86_ALIGNMENT
54 #define _PACKED __attribute__((packed))
55 /* on ia32 l_start is on a 32-bit boundary */
56 typedef struct xfs_flock64_32 {
57 __s16 l_type;
58 __s16 l_whence;
59 __s64 l_start __attribute__((packed));
60 /* len == 0 means until end of file */
61 __s64 l_len __attribute__((packed));
62 __s32 l_sysid;
63 __u32 l_pid;
64 __s32 l_pad[4]; /* reserve area */
65 } xfs_flock64_32_t;
66
67 #define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
68 #define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
69 #define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
70 #define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
71 #define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
72 #define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
73 #define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
74 #define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
75
76 /* just account for different alignment */
77 STATIC unsigned long
78 xfs_ioctl32_flock(
79 unsigned long arg)
80 {
81 xfs_flock64_32_t __user *p32 = (void __user *)arg;
82 xfs_flock64_t __user *p = compat_alloc_user_space(sizeof(*p));
83
84 if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) ||
85 copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) ||
86 copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) ||
87 copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
88 copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
89 copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
90 copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
91 return -EFAULT;
92
93 return (unsigned long)p;
94 }
95
96 typedef struct compat_xfs_fsop_geom_v1 {
97 __u32 blocksize; /* filesystem (data) block size */
98 __u32 rtextsize; /* realtime extent size */
99 __u32 agblocks; /* fsblocks in an AG */
100 __u32 agcount; /* number of allocation groups */
101 __u32 logblocks; /* fsblocks in the log */
102 __u32 sectsize; /* (data) sector size, bytes */
103 __u32 inodesize; /* inode size in bytes */
104 __u32 imaxpct; /* max allowed inode space(%) */
105 __u64 datablocks; /* fsblocks in data subvolume */
106 __u64 rtblocks; /* fsblocks in realtime subvol */
107 __u64 rtextents; /* rt extents in realtime subvol*/
108 __u64 logstart; /* starting fsblock of the log */
109 unsigned char uuid[16]; /* unique id of the filesystem */
110 __u32 sunit; /* stripe unit, fsblocks */
111 __u32 swidth; /* stripe width, fsblocks */
112 __s32 version; /* structure version */
113 __u32 flags; /* superblock version flags */
114 __u32 logsectsize; /* log sector size, bytes */
115 __u32 rtsectsize; /* realtime sector size, bytes */
116 __u32 dirblocksize; /* directory block size, bytes */
117 } __attribute__((packed)) compat_xfs_fsop_geom_v1_t;
118
119 #define XFS_IOC_FSGEOMETRY_V1_32 \
120 _IOR ('X', 100, struct compat_xfs_fsop_geom_v1)
121
122 STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg)
123 {
124 compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg;
125 xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p));
126
127 if (copy_in_user(p, p32, sizeof(*p32)))
128 return -EFAULT;
129 return (unsigned long)p;
130 }
131
132 typedef struct compat_xfs_inogrp {
133 __u64 xi_startino; /* starting inode number */
134 __s32 xi_alloccount; /* # bits set in allocmask */
135 __u64 xi_allocmask; /* mask of allocated inodes */
136 } __attribute__((packed)) compat_xfs_inogrp_t;
137
138 STATIC int xfs_inumbers_fmt_compat(
139 void __user *ubuffer,
140 const xfs_inogrp_t *buffer,
141 long count,
142 long *written)
143 {
144 compat_xfs_inogrp_t __user *p32 = ubuffer;
145 long i;
146
147 for (i = 0; i < count; i++) {
148 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
149 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
150 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
151 return -EFAULT;
152 }
153 *written = count * sizeof(*p32);
154 return 0;
155 }
156
157 #else
158
159 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
160 #define _PACKED
161
162 #endif
163
164 /* XFS_IOC_FSBULKSTAT and friends */
165
166 typedef struct compat_xfs_bstime {
167 __s32 tv_sec; /* seconds */
168 __s32 tv_nsec; /* and nanoseconds */
169 } compat_xfs_bstime_t;
170
171 STATIC int xfs_bstime_store_compat(
172 compat_xfs_bstime_t __user *p32,
173 const xfs_bstime_t *p)
174 {
175 __s32 sec32;
176
177 sec32 = p->tv_sec;
178 if (put_user(sec32, &p32->tv_sec) ||
179 put_user(p->tv_nsec, &p32->tv_nsec))
180 return -EFAULT;
181 return 0;
182 }
183
184 typedef struct compat_xfs_bstat {
185 __u64 bs_ino; /* inode number */
186 __u16 bs_mode; /* type and mode */
187 __u16 bs_nlink; /* number of links */
188 __u32 bs_uid; /* user id */
189 __u32 bs_gid; /* group id */
190 __u32 bs_rdev; /* device value */
191 __s32 bs_blksize; /* block size */
192 __s64 bs_size; /* file size */
193 compat_xfs_bstime_t bs_atime; /* access time */
194 compat_xfs_bstime_t bs_mtime; /* modify time */
195 compat_xfs_bstime_t bs_ctime; /* inode change time */
196 int64_t bs_blocks; /* number of blocks */
197 __u32 bs_xflags; /* extended flags */
198 __s32 bs_extsize; /* extent size */
199 __s32 bs_extents; /* number of extents */
200 __u32 bs_gen; /* generation count */
201 __u16 bs_projid; /* project id */
202 unsigned char bs_pad[14]; /* pad space, unused */
203 __u32 bs_dmevmask; /* DMIG event mask */
204 __u16 bs_dmstate; /* DMIG state info */
205 __u16 bs_aextents; /* attribute number of extents */
206 } _PACKED compat_xfs_bstat_t;
207
208 STATIC int xfs_bulkstat_one_fmt_compat(
209 void __user *ubuffer,
210 const xfs_bstat_t *buffer)
211 {
212 compat_xfs_bstat_t __user *p32 = ubuffer;
213
214 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
215 put_user(buffer->bs_mode, &p32->bs_mode) ||
216 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
217 put_user(buffer->bs_uid, &p32->bs_uid) ||
218 put_user(buffer->bs_gid, &p32->bs_gid) ||
219 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
220 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
221 put_user(buffer->bs_size, &p32->bs_size) ||
222 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
223 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
224 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
225 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
226 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
227 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
228 put_user(buffer->bs_extents, &p32->bs_extents) ||
229 put_user(buffer->bs_gen, &p32->bs_gen) ||
230 put_user(buffer->bs_projid, &p32->bs_projid) ||
231 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
232 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
233 put_user(buffer->bs_aextents, &p32->bs_aextents))
234 return -EFAULT;
235 return sizeof(*p32);
236 }
237
238
239
240 typedef struct compat_xfs_fsop_bulkreq {
241 compat_uptr_t lastip; /* last inode # pointer */
242 __s32 icount; /* count of entries in buffer */
243 compat_uptr_t ubuffer; /* user buffer for inode desc. */
244 compat_uptr_t ocount; /* output count pointer */
245 } compat_xfs_fsop_bulkreq_t;
246
247 #define XFS_IOC_FSBULKSTAT_32 \
248 _IOWR('X', 101, struct compat_xfs_fsop_bulkreq)
249 #define XFS_IOC_FSBULKSTAT_SINGLE_32 \
250 _IOWR('X', 102, struct compat_xfs_fsop_bulkreq)
251 #define XFS_IOC_FSINUMBERS_32 \
252 _IOWR('X', 103, struct compat_xfs_fsop_bulkreq)
253
254 /* copied from xfs_ioctl.c */
255 STATIC int
256 xfs_ioc_bulkstat_compat(
257 xfs_mount_t *mp,
258 unsigned int cmd,
259 void __user *arg)
260 {
261 compat_xfs_fsop_bulkreq_t __user *p32 = (void __user *)arg;
262 u32 addr;
263 xfs_fsop_bulkreq_t bulkreq;
264 int count; /* # of records returned */
265 xfs_ino_t inlast; /* last inode number */
266 int done;
267 int error;
268
269 /* done = 1 if there are more stats to get and if bulkstat */
270 /* should be called again (unused here, but used in dmapi) */
271
272 if (!capable(CAP_SYS_ADMIN))
273 return -EPERM;
274
275 if (XFS_FORCED_SHUTDOWN(mp))
276 return -XFS_ERROR(EIO);
277
278 if (get_user(addr, &p32->lastip))
279 return -EFAULT;
280 bulkreq.lastip = compat_ptr(addr);
281 if (get_user(bulkreq.icount, &p32->icount) ||
282 get_user(addr, &p32->ubuffer))
283 return -EFAULT;
284 bulkreq.ubuffer = compat_ptr(addr);
285 if (get_user(addr, &p32->ocount))
286 return -EFAULT;
287 bulkreq.ocount = compat_ptr(addr);
288
289 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
290 return -XFS_ERROR(EFAULT);
291
292 if ((count = bulkreq.icount) <= 0)
293 return -XFS_ERROR(EINVAL);
294
295 if (bulkreq.ubuffer == NULL)
296 return -XFS_ERROR(EINVAL);
297
298 if (cmd == XFS_IOC_FSINUMBERS)
299 error = xfs_inumbers(mp, &inlast, &count,
300 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
301 else {
302 /* declare a var to get a warning in case the type changes */
303 bulkstat_one_fmt_pf formatter = xfs_bulkstat_one_fmt_compat;
304 error = xfs_bulkstat(mp, &inlast, &count,
305 xfs_bulkstat_one, formatter,
306 sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
307 BULKSTAT_FG_QUICK, &done);
308 }
309 if (error)
310 return -error;
311
312 if (bulkreq.ocount != NULL) {
313 if (copy_to_user(bulkreq.lastip, &inlast,
314 sizeof(xfs_ino_t)))
315 return -XFS_ERROR(EFAULT);
316
317 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
318 return -XFS_ERROR(EFAULT);
319 }
320
321 return 0;
322 }
323
324
325
326 typedef struct compat_xfs_fsop_handlereq {
327 __u32 fd; /* fd for FD_TO_HANDLE */
328 compat_uptr_t path; /* user pathname */
329 __u32 oflags; /* open flags */
330 compat_uptr_t ihandle; /* user supplied handle */
331 __u32 ihandlen; /* user supplied length */
332 compat_uptr_t ohandle; /* user buffer for handle */
333 compat_uptr_t ohandlen; /* user buffer length */
334 } compat_xfs_fsop_handlereq_t;
335
336 #define XFS_IOC_PATH_TO_FSHANDLE_32 \
337 _IOWR('X', 104, struct compat_xfs_fsop_handlereq)
338 #define XFS_IOC_PATH_TO_HANDLE_32 \
339 _IOWR('X', 105, struct compat_xfs_fsop_handlereq)
340 #define XFS_IOC_FD_TO_HANDLE_32 \
341 _IOWR('X', 106, struct compat_xfs_fsop_handlereq)
342 #define XFS_IOC_OPEN_BY_HANDLE_32 \
343 _IOWR('X', 107, struct compat_xfs_fsop_handlereq)
344 #define XFS_IOC_READLINK_BY_HANDLE_32 \
345 _IOWR('X', 108, struct compat_xfs_fsop_handlereq)
346
347 STATIC unsigned long xfs_ioctl32_fshandle(unsigned long arg)
348 {
349 compat_xfs_fsop_handlereq_t __user *p32 = (void __user *)arg;
350 xfs_fsop_handlereq_t __user *p = compat_alloc_user_space(sizeof(*p));
351 u32 addr;
352
353 if (copy_in_user(&p->fd, &p32->fd, sizeof(__u32)) ||
354 get_user(addr, &p32->path) ||
355 put_user(compat_ptr(addr), &p->path) ||
356 copy_in_user(&p->oflags, &p32->oflags, sizeof(__u32)) ||
357 get_user(addr, &p32->ihandle) ||
358 put_user(compat_ptr(addr), &p->ihandle) ||
359 copy_in_user(&p->ihandlen, &p32->ihandlen, sizeof(__u32)) ||
360 get_user(addr, &p32->ohandle) ||
361 put_user(compat_ptr(addr), &p->ohandle) ||
362 get_user(addr, &p32->ohandlen) ||
363 put_user(compat_ptr(addr), &p->ohandlen))
364 return -EFAULT;
365
366 return (unsigned long)p;
367 }
368
369
370 STATIC long
371 xfs_compat_ioctl(
372 int mode,
373 struct file *file,
374 unsigned cmd,
375 unsigned long arg)
376 {
377 struct inode *inode = file->f_path.dentry->d_inode;
378 int error;
379
380 switch (cmd) {
381 case XFS_IOC_DIOINFO:
382 case XFS_IOC_FSGEOMETRY:
383 case XFS_IOC_FSGETXATTR:
384 case XFS_IOC_FSSETXATTR:
385 case XFS_IOC_FSGETXATTRA:
386 case XFS_IOC_FSSETDM:
387 case XFS_IOC_GETBMAP:
388 case XFS_IOC_GETBMAPA:
389 case XFS_IOC_GETBMAPX:
390 /* not handled
391 case XFS_IOC_FSSETDM_BY_HANDLE:
392 case XFS_IOC_ATTRLIST_BY_HANDLE:
393 case XFS_IOC_ATTRMULTI_BY_HANDLE:
394 */
395 case XFS_IOC_FSCOUNTS:
396 case XFS_IOC_SET_RESBLKS:
397 case XFS_IOC_GET_RESBLKS:
398 case XFS_IOC_FSGROWFSDATA:
399 case XFS_IOC_FSGROWFSLOG:
400 case XFS_IOC_FSGROWFSRT:
401 case XFS_IOC_FREEZE:
402 case XFS_IOC_THAW:
403 case XFS_IOC_GOINGDOWN:
404 case XFS_IOC_ERROR_INJECTION:
405 case XFS_IOC_ERROR_CLEARALL:
406 break;
407
408 case XFS_IOC32_GETXFLAGS:
409 case XFS_IOC32_SETXFLAGS:
410 case XFS_IOC32_GETVERSION:
411 cmd = _NATIVE_IOC(cmd, long);
412 break;
413 #ifdef BROKEN_X86_ALIGNMENT
414 /* xfs_flock_t has wrong u32 vs u64 alignment */
415 case XFS_IOC_ALLOCSP_32:
416 case XFS_IOC_FREESP_32:
417 case XFS_IOC_ALLOCSP64_32:
418 case XFS_IOC_FREESP64_32:
419 case XFS_IOC_RESVSP_32:
420 case XFS_IOC_UNRESVSP_32:
421 case XFS_IOC_RESVSP64_32:
422 case XFS_IOC_UNRESVSP64_32:
423 arg = xfs_ioctl32_flock(arg);
424 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
425 break;
426 case XFS_IOC_FSGEOMETRY_V1_32:
427 arg = xfs_ioctl32_geom_v1(arg);
428 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1);
429 break;
430
431 #else /* These are handled fine if no alignment issues */
432 case XFS_IOC_ALLOCSP:
433 case XFS_IOC_FREESP:
434 case XFS_IOC_RESVSP:
435 case XFS_IOC_UNRESVSP:
436 case XFS_IOC_ALLOCSP64:
437 case XFS_IOC_FREESP64:
438 case XFS_IOC_RESVSP64:
439 case XFS_IOC_UNRESVSP64:
440 case XFS_IOC_FSGEOMETRY_V1:
441 break;
442
443 /* xfs_bstat_t still has wrong u32 vs u64 alignment */
444 case XFS_IOC_SWAPEXT:
445 break;
446
447 #endif
448 case XFS_IOC_FSBULKSTAT_32:
449 case XFS_IOC_FSBULKSTAT_SINGLE_32:
450 case XFS_IOC_FSINUMBERS_32:
451 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_bulkreq);
452 return xfs_ioc_bulkstat_compat(XFS_I(inode)->i_mount,
453 cmd, (void __user*)arg);
454 case XFS_IOC_FD_TO_HANDLE_32:
455 case XFS_IOC_PATH_TO_HANDLE_32:
456 case XFS_IOC_PATH_TO_FSHANDLE_32:
457 case XFS_IOC_OPEN_BY_HANDLE_32:
458 case XFS_IOC_READLINK_BY_HANDLE_32:
459 arg = xfs_ioctl32_fshandle(arg);
460 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
461 break;
462 default:
463 return -ENOIOCTLCMD;
464 }
465
466 error = xfs_ioctl(XFS_I(inode), file, mode, cmd, (void __user *)arg);
467 xfs_iflags_set(XFS_I(inode), XFS_IMODIFIED);
468
469 return error;
470 }
471
472 long
473 xfs_file_compat_ioctl(
474 struct file *file,
475 unsigned cmd,
476 unsigned long arg)
477 {
478 return xfs_compat_ioctl(0, file, cmd, arg);
479 }
480
481 long
482 xfs_file_compat_invis_ioctl(
483 struct file *file,
484 unsigned cmd,
485 unsigned long arg)
486 {
487 return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
488 }
489
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