1 /*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "defs.h"
33
34 #define SUBCMDMASK 0x00ff
35 #define SUBCMDSHIFT 8
36 #define QCMD_CMD(cmd) ((uint32_t)(cmd) >> SUBCMDSHIFT)
37 #define QCMD_TYPE(cmd) ((uint32_t)(cmd) & SUBCMDMASK)
38
39 #define OLD_CMD(cmd) ((uint32_t)(cmd) << SUBCMDSHIFT)
40 #define NEW_CMD(cmd) ((uint32_t)(cmd) | 0x800000)
41 #define XQM_CMD(cmd) ((uint32_t)(cmd) | ('X' << SUBCMDSHIFT))
42
43 #include "xlat/quotacmds.h"
44 #include "xlat/quotatypes.h"
45 #include "xlat/quota_formats.h"
46 #include "xlat/xfs_quota_flags.h"
47 #include "xlat/xfs_dqblk_flags.h"
48 #include "xlat/if_dqblk_valid.h"
49 #include "xlat/if_dqinfo_flags.h"
50 #include "xlat/if_dqinfo_valid.h"
51
52 /*
53 * We add attribute packed due to the fact that the structure is 8-byte aligned
54 * on 64-bit systems and therefore has additional 4 bytes of padding, which
55 * leads to problems when it is used on 32-bit tracee which does not have such
56 * padding.
57 */
58 struct if_dqblk
59 {
60 uint64_t dqb_bhardlimit;
61 uint64_t dqb_bsoftlimit;
62 uint64_t dqb_curspace;
63 uint64_t dqb_ihardlimit;
64 uint64_t dqb_isoftlimit;
65 uint64_t dqb_curinodes;
66 uint64_t dqb_btime;
67 uint64_t dqb_itime;
68 uint32_t dqb_valid;
69 } ATTRIBUTE_PACKED;
70
71 struct if_nextdqblk {
72 uint64_t dqb_bhardlimit;
73 uint64_t dqb_bsoftlimit;
74 uint64_t dqb_curspace;
75 uint64_t dqb_ihardlimit;
76 uint64_t dqb_isoftlimit;
77 uint64_t dqb_curinodes;
78 uint64_t dqb_btime;
79 uint64_t dqb_itime;
80 uint32_t dqb_valid;
81 uint32_t dqb_id;
82 };
83
84 struct xfs_dqblk
85 {
86 int8_t d_version; /* version of this structure */
87 int8_t d_flags; /* XFS_{USER,PROJ,GROUP}_QUOTA */
88 uint16_t d_fieldmask; /* field specifier */
89 uint32_t d_id; /* user, project, or group ID */
90 uint64_t d_blk_hardlimit; /* absolute limit on disk blks */
91 uint64_t d_blk_softlimit; /* preferred limit on disk blks */
92 uint64_t d_ino_hardlimit; /* maximum # allocated inodes */
93 uint64_t d_ino_softlimit; /* preferred inode limit */
94 uint64_t d_bcount; /* # disk blocks owned by the user */
95 uint64_t d_icount; /* # inodes owned by the user */
96 int32_t d_itimer; /* zero if within inode limits */
97 int32_t d_btimer; /* similar to above; for disk blocks */
98 uint16_t d_iwarns; /* # warnings issued wrt num inodes */
99 uint16_t d_bwarns; /* # warnings issued wrt disk blocks */
100 int32_t d_padding2; /* padding2 - for future use */
101 uint64_t d_rtb_hardlimit; /* absolute limit on realtime blks */
102 uint64_t d_rtb_softlimit; /* preferred limit on RT disk blks */
103 uint64_t d_rtbcount; /* # realtime blocks owned */
104 int32_t d_rtbtimer; /* similar to above; for RT disk blks */
105 uint16_t d_rtbwarns; /* # warnings issued wrt RT disk blks */
106 int16_t d_padding3; /* padding3 - for future use */
107 char d_padding4[8]; /* yet more padding */
108 };
109
110 struct if_dqinfo
111 {
112 uint64_t dqi_bgrace;
113 uint64_t dqi_igrace;
114 uint32_t dqi_flags;
115 uint32_t dqi_valid;
116 };
117
118 typedef struct fs_qfilestat
119 {
120 uint64_t qfs_ino; /* inode number */
121 uint64_t qfs_nblks; /* number of BBs 512-byte-blks */
122 uint32_t qfs_nextents; /* number of extents */
123 } fs_qfilestat_t;
124
125 struct xfs_dqstats
126 {
127 int8_t qs_version; /* version number for future changes */
128 uint16_t qs_flags; /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
129 int8_t qs_pad; /* unused */
130 fs_qfilestat_t qs_uquota; /* user quota storage information */
131 fs_qfilestat_t qs_gquota; /* group quota storage information */
132 uint32_t qs_incoredqs; /* number of dquots incore */
133 int32_t qs_btimelimit; /* limit for blks timer */
134 int32_t qs_itimelimit; /* limit for inodes timer */
135 int32_t qs_rtbtimelimit; /* limit for rt blks timer */
136 uint16_t qs_bwarnlimit; /* limit for num warnings */
137 uint16_t qs_iwarnlimit; /* limit for num warnings */
138 };
139
140 struct fs_qfilestatv {
141 uint64_t qfs_ino, qfs_nblks;
142 uint32_t qfs_nextents, qfs_pad;
143 };
144
145 struct fs_quota_statv {
146 int8_t qs_version;
147 uint8_t qs_pad1;
148 uint16_t qs_flags;
149 uint32_t qs_incoredqs;
150 struct fs_qfilestatv qs_uquota;
151 struct fs_qfilestatv qs_gquota;
152 struct fs_qfilestatv qs_pquota;
153 int32_t qs_btimelimit;
154 int32_t qs_itimelimit;
155 int32_t qs_rtbtimelimit;
156 uint16_t qs_bwarnlimit;
157 uint16_t qs_iwarnlimit;
158 uint64_t qs_pad2[8];
159 };
160
161 #define PRINT_FIELD_D(prefix, where, field) \
162 tprintf("%s%s=%lld", (prefix), #field, \
163 sign_extend_unsigned_to_ll((where).field))
164
165 #define PRINT_FIELD_U(prefix, where, field) \
166 tprintf("%s%s=%llu", (prefix), #field, \
167 zero_extend_signed_to_ull((where).field))
168
169 #define PRINT_FIELD_X(prefix, where, field) \
170 tprintf("%s%s=%#llx", (prefix), #field, \
171 zero_extend_signed_to_ull((where).field))
172
173 static int
decode_cmd_data(struct tcb * tcp,uint32_t id,uint32_t cmd,kernel_ulong_t data)174 decode_cmd_data(struct tcb *tcp, uint32_t id, uint32_t cmd, kernel_ulong_t data)
175 {
176 switch (cmd) {
177 case Q_QUOTAOFF:
178 case Q_SYNC:
179 case Q_XQUOTASYNC:
180 break;
181 case Q_QUOTAON:
182 tprints(", ");
183 printxval(quota_formats, id, "QFMT_VFS_???");
184 tprints(", ");
185 printpath(tcp, data);
186 break;
187 case Q_GETQUOTA:
188 if (entering(tcp)) {
189 printuid(", ", id);
190 tprints(", ");
191
192 return 0;
193 }
194
195 /* Fall-through */
196 case Q_SETQUOTA:
197 {
198 struct if_dqblk dq;
199
200 if (entering(tcp)) {
201 printuid(", ", id);
202 tprints(", ");
203 }
204
205 if (umove_or_printaddr(tcp, data, &dq))
206 break;
207 PRINT_FIELD_U("{", dq, dqb_bhardlimit);
208 PRINT_FIELD_U(", ", dq, dqb_bsoftlimit);
209 PRINT_FIELD_U(", ", dq, dqb_curspace);
210 PRINT_FIELD_U(", ", dq, dqb_ihardlimit);
211 PRINT_FIELD_U(", ", dq, dqb_isoftlimit);
212 PRINT_FIELD_U(", ", dq, dqb_curinodes);
213 if (!abbrev(tcp)) {
214 PRINT_FIELD_U(", ", dq, dqb_btime);
215 PRINT_FIELD_U(", ", dq, dqb_itime);
216 tprints(", dqb_valid=");
217 printflags(if_dqblk_valid,
218 dq.dqb_valid, "QIF_???");
219 } else {
220 tprints(", ...");
221 }
222 tprints("}");
223 break;
224 }
225 case Q_GETNEXTQUOTA:
226 {
227 struct if_nextdqblk dq;
228
229 if (entering(tcp)) {
230 printuid(", ", id);
231 tprints(", ");
232
233 return 0;
234 }
235
236 if (umove_or_printaddr(tcp, data, &dq))
237 break;
238 PRINT_FIELD_U("{", dq, dqb_bhardlimit);
239 PRINT_FIELD_U(", ", dq, dqb_bsoftlimit);
240 PRINT_FIELD_U(", ", dq, dqb_curspace);
241 PRINT_FIELD_U(", ", dq, dqb_ihardlimit);
242 PRINT_FIELD_U(", ", dq, dqb_isoftlimit);
243 PRINT_FIELD_U(", ", dq, dqb_curinodes);
244 if (!abbrev(tcp)) {
245 PRINT_FIELD_U(", ", dq, dqb_btime);
246 PRINT_FIELD_U(", ", dq, dqb_itime);
247 tprints(", dqb_valid=");
248 printflags(if_dqblk_valid,
249 dq.dqb_valid, "QIF_???");
250 PRINT_FIELD_U(", ", dq, dqb_id);
251 } else {
252 PRINT_FIELD_U(", ", dq, dqb_id);
253 tprints(", ...");
254 }
255 tprints("}");
256 break;
257 }
258 case Q_XGETQUOTA:
259 case Q_XGETNEXTQUOTA:
260 if (entering(tcp)) {
261 printuid(", ", id);
262 tprints(", ");
263
264 return 0;
265 }
266
267 /* Fall-through */
268 case Q_XSETQLIM:
269 {
270 struct xfs_dqblk dq;
271
272 if (entering(tcp)) {
273 printuid(", ", id);
274 tprints(", ");
275 }
276
277 if (umove_or_printaddr(tcp, data, &dq))
278 break;
279 PRINT_FIELD_D("{", dq, d_version);
280 tprints(", d_flags=");
281 printflags(xfs_dqblk_flags,
282 (uint8_t) dq.d_flags, "XFS_???_QUOTA");
283 PRINT_FIELD_X(", ", dq, d_fieldmask);
284 PRINT_FIELD_U(", ", dq, d_id);
285 PRINT_FIELD_U(", ", dq, d_blk_hardlimit);
286 PRINT_FIELD_U(", ", dq, d_blk_softlimit);
287 PRINT_FIELD_U(", ", dq, d_ino_hardlimit);
288 PRINT_FIELD_U(", ", dq, d_ino_softlimit);
289 PRINT_FIELD_U(", ", dq, d_bcount);
290 PRINT_FIELD_U(", ", dq, d_icount);
291 if (!abbrev(tcp)) {
292 PRINT_FIELD_D(", ", dq, d_itimer);
293 PRINT_FIELD_D(", ", dq, d_btimer);
294 PRINT_FIELD_U(", ", dq, d_iwarns);
295 PRINT_FIELD_U(", ", dq, d_bwarns);
296 PRINT_FIELD_U(", ", dq, d_rtb_hardlimit);
297 PRINT_FIELD_U(", ", dq, d_rtb_softlimit);
298 PRINT_FIELD_U(", ", dq, d_rtbcount);
299 PRINT_FIELD_D(", ", dq, d_rtbtimer);
300 PRINT_FIELD_U(", ", dq, d_rtbwarns);
301 } else {
302 tprints(", ...");
303 }
304 tprints("}");
305 break;
306 }
307 case Q_GETFMT:
308 {
309 uint32_t fmt;
310
311 if (entering(tcp)) {
312 tprints(", ");
313
314 return 0;
315 }
316
317 if (umove_or_printaddr(tcp, data, &fmt))
318 break;
319 tprints("[");
320 printxval(quota_formats, fmt, "QFMT_VFS_???");
321 tprints("]");
322 break;
323 }
324 case Q_GETINFO:
325 if (entering(tcp)) {
326 tprints(", ");
327
328 return 0;
329 }
330
331 /* Fall-through */
332 case Q_SETINFO:
333 {
334 struct if_dqinfo dq;
335
336 if (entering(tcp))
337 tprints(", ");
338
339 if (umove_or_printaddr(tcp, data, &dq))
340 break;
341 PRINT_FIELD_U("{", dq, dqi_bgrace);
342 PRINT_FIELD_U(", ", dq, dqi_igrace);
343 tprints(", dqi_flags=");
344 printflags(if_dqinfo_flags, dq.dqi_flags, "DQF_???");
345 tprints(", dqi_valid=");
346 printflags(if_dqinfo_valid, dq.dqi_valid, "IIF_???");
347 tprints("}");
348 break;
349 }
350 case Q_XGETQSTAT:
351 {
352 struct xfs_dqstats dq;
353
354 if (entering(tcp)) {
355 tprints(", ");
356
357 return 0;
358 }
359
360 if (umove_or_printaddr(tcp, data, &dq))
361 break;
362 PRINT_FIELD_D("{", dq, qs_version);
363 if (!abbrev(tcp)) {
364 tprints(", qs_flags=");
365 printflags(xfs_quota_flags,
366 dq.qs_flags, "XFS_QUOTA_???");
367 PRINT_FIELD_U(", ", dq, qs_incoredqs);
368 PRINT_FIELD_U(", qs_uquota={", dq.qs_uquota, qfs_ino);
369 PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nblks);
370 PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nextents);
371 PRINT_FIELD_U("}, qs_gquota={", dq.qs_gquota, qfs_ino);
372 PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nblks);
373 PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nextents);
374 PRINT_FIELD_D("}, ", dq, qs_btimelimit);
375 PRINT_FIELD_D(", ", dq, qs_itimelimit);
376 PRINT_FIELD_D(", ", dq, qs_rtbtimelimit);
377 PRINT_FIELD_U(", ", dq, qs_bwarnlimit);
378 PRINT_FIELD_U(", ", dq, qs_iwarnlimit);
379 } else {
380 tprints(", ...");
381 }
382 tprints("}");
383 break;
384 }
385 case Q_XGETQSTATV:
386 {
387 struct fs_quota_statv dq;
388
389 if (entering(tcp)) {
390 tprints(", ");
391
392 return 0;
393 }
394
395 if (umove_or_printaddr(tcp, data, &dq))
396 break;
397 PRINT_FIELD_D("{", dq, qs_version);
398 if (!abbrev(tcp)) {
399 tprints(", qs_flags=");
400 printflags(xfs_quota_flags,
401 dq.qs_flags, "XFS_QUOTA_???");
402 PRINT_FIELD_U(", ", dq, qs_incoredqs);
403 PRINT_FIELD_U(", qs_uquota={", dq.qs_uquota, qfs_ino);
404 PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nblks);
405 PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nextents);
406 PRINT_FIELD_U("}, qs_gquota={", dq.qs_gquota, qfs_ino);
407 PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nblks);
408 PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nextents);
409 PRINT_FIELD_U("}, qs_pquota={", dq.qs_pquota, qfs_ino);
410 PRINT_FIELD_U(", ", dq.qs_pquota, qfs_nblks);
411 PRINT_FIELD_U(", ", dq.qs_pquota, qfs_nextents);
412 PRINT_FIELD_D("}, ", dq, qs_btimelimit);
413 PRINT_FIELD_D(", ", dq, qs_itimelimit);
414 PRINT_FIELD_D(", ", dq, qs_rtbtimelimit);
415 PRINT_FIELD_U(", ", dq, qs_bwarnlimit);
416 PRINT_FIELD_U(", ", dq, qs_iwarnlimit);
417 } else {
418 tprints(", ...");
419 }
420 tprints("}");
421 break;
422 }
423 case Q_XQUOTAON:
424 case Q_XQUOTAOFF:
425 {
426 uint32_t flag;
427
428 tprints(", ");
429
430 if (umove_or_printaddr(tcp, data, &flag))
431 break;
432 tprints("[");
433 printflags(xfs_quota_flags, flag, "XFS_QUOTA_???");
434 tprints("]");
435 break;
436 }
437 case Q_XQUOTARM:
438 {
439 uint32_t flag;
440
441 tprints(", ");
442
443 if (umove_or_printaddr(tcp, data, &flag))
444 break;
445 tprints("[");
446 printflags(xfs_dqblk_flags, flag, "XFS_???_QUOTA");
447 tprints("]");
448 break;
449 }
450 default:
451 printuid(", ", id);
452 tprints(", ");
453 printaddr(data);
454 break;
455 }
456 return RVAL_DECODED;
457 }
458
SYS_FUNC(quotactl)459 SYS_FUNC(quotactl)
460 {
461 /*
462 * The Linux kernel only looks at the low 32 bits of command and id
463 * arguments, but on some 64-bit architectures (s390x) this word
464 * will have been sign-extended when we see it. The high 1 bits
465 * don't mean anything, so don't confuse the output with them.
466 */
467 uint32_t qcmd = tcp->u_arg[0];
468 uint32_t cmd = QCMD_CMD(qcmd);
469 uint32_t type = QCMD_TYPE(qcmd);
470 uint32_t id = tcp->u_arg[2];
471
472 if (entering(tcp)) {
473 tprints("QCMD(");
474 printxval(quotacmds, cmd, "Q_???");
475 tprints(", ");
476 printxval(quotatypes, type, "???QUOTA");
477 tprints("), ");
478 printpath(tcp, tcp->u_arg[1]);
479 }
480 return decode_cmd_data(tcp, id, cmd, tcp->u_arg[3]);
481 }
482