1 /**
2 * mkntfs - Part of the Linux-NTFS project.
3 *
4 * Copyright (c) 2000-2011 Anton Altaparmakov
5 * Copyright (c) 2001-2005 Richard Russon
6 * Copyright (c) 2002-2006 Szabolcs Szakacsits
7 * Copyright (c) 2005 Erik Sornes
8 * Copyright (c) 2007 Yura Pakhuchiy
9 * Copyright (c) 2010-2014 Jean-Pierre Andre
10 *
11 * This utility will create an NTFS 1.2 or 3.1 volume on a user
12 * specified (block) device.
13 *
14 * Some things (option handling and determination of mount status) have been
15 * adapted from e2fsprogs-1.19 and lib/ext2fs/ismounted.c and misc/mke2fs.c in
16 * particular.
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program (in the main directory of the Linux-NTFS source
30 * in the file COPYING); if not, write to the Free Software Foundation,
31 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include "config.h"
36 #endif
37
38 #ifdef HAVE_UNISTD_H
39 #include <unistd.h>
40 #endif
41 #ifdef HAVE_STDLIB_H
42 #include <stdlib.h>
43 #endif
44 #ifdef HAVE_STDIO_H
45 #include <stdio.h>
46 #endif
47 #ifdef HAVE_STDARG_H
48 #include <stdarg.h>
49 #endif
50 #ifdef HAVE_STRING_H
51 #include <string.h>
52 #endif
53 #ifdef HAVE_ERRNO_H
54 #include <errno.h>
55 #endif
56 #ifdef HAVE_TIME_H
57 #include <time.h>
58 #endif
59 #ifdef HAVE_SYS_STAT_H
60 #include <sys/stat.h>
61 #endif
62 #ifdef HAVE_FCNTL_H
63 #include <fcntl.h>
64 #endif
65 #ifdef HAVE_LIMITS_H
66 #include <limits.h>
67 #endif
68 #ifdef HAVE_LIBGEN_H
69 #include <libgen.h>
70 #endif
71 #ifdef ENABLE_UUID
72 #include <uuid/uuid.h>
73 #endif
74
75
76 #ifdef HAVE_GETOPT_H
77 #include <getopt.h>
78 #else
79 extern char *optarg;
80 extern int optind;
81 #endif
82
83 #ifdef HAVE_LINUX_MAJOR_H
84 # include <linux/major.h>
85 # ifndef MAJOR
86 # define MAJOR(dev) ((dev) >> 8)
87 # define MINOR(dev) ((dev) & 0xff)
88 # endif
89 # ifndef IDE_DISK_MAJOR
90 # ifndef IDE0_MAJOR
91 # define IDE0_MAJOR 3
92 # define IDE1_MAJOR 22
93 # define IDE2_MAJOR 33
94 # define IDE3_MAJOR 34
95 # define IDE4_MAJOR 56
96 # define IDE5_MAJOR 57
97 # define IDE6_MAJOR 88
98 # define IDE7_MAJOR 89
99 # define IDE8_MAJOR 90
100 # define IDE9_MAJOR 91
101 # endif
102 # define IDE_DISK_MAJOR(M) \
103 ((M) == IDE0_MAJOR || (M) == IDE1_MAJOR || \
104 (M) == IDE2_MAJOR || (M) == IDE3_MAJOR || \
105 (M) == IDE4_MAJOR || (M) == IDE5_MAJOR || \
106 (M) == IDE6_MAJOR || (M) == IDE7_MAJOR || \
107 (M) == IDE8_MAJOR || (M) == IDE9_MAJOR)
108 # endif
109 # ifndef SCSI_DISK_MAJOR
110 # ifndef SCSI_DISK0_MAJOR
111 # define SCSI_DISK0_MAJOR 8
112 # define SCSI_DISK1_MAJOR 65
113 # define SCSI_DISK7_MAJOR 71
114 # endif
115 # define SCSI_DISK_MAJOR(M) \
116 ((M) == SCSI_DISK0_MAJOR || \
117 ((M) >= SCSI_DISK1_MAJOR && \
118 (M) <= SCSI_DISK7_MAJOR))
119 # endif
120 #endif
121
122 #include "security.h"
123 #include "types.h"
124 #include "attrib.h"
125 #include "bitmap.h"
126 #include "bootsect.h"
127 #include "device.h"
128 #include "dir.h"
129 #include "mft.h"
130 #include "mst.h"
131 #include "runlist.h"
132 #include "utils.h"
133 #include "ntfstime.h"
134 #include "sd.h"
135 #include "boot.h"
136 #include "attrdef.h"
137 /* #include "version.h" */
138 #include "logging.h"
139 #include "support.h"
140 #include "unistr.h"
141 #include "misc.h"
142
143 int mkntfs_main(const char *devpath, const char *label);
144
145 typedef enum { WRITE_STANDARD, WRITE_BITMAP, WRITE_LOGFILE } WRITE_TYPE;
146
147 #ifdef NO_NTFS_DEVICE_DEFAULT_IO_OPS
148 #error "No default device io operations! Cannot build mkntfs. \
149 You need to run ./configure without the --disable-default-device-io-ops \
150 switch if you want to be able to build the NTFS utilities."
151 #endif
152
153 /* Page size on ia32. Can change to 8192 on Alpha. */
154 #define NTFS_PAGE_SIZE 4096
155
156 //static char EXEC_NAME[] = "mkntfs";
157
158 struct BITMAP_ALLOCATION {
159 struct BITMAP_ALLOCATION *next;
160 LCN lcn; /* first allocated cluster */
161 s64 length; /* count of consecutive clusters */
162 } ;
163
164 /* Upcase $Info, used since Windows 8 */
165 struct UPCASEINFO {
166 le32 len;
167 le32 filler;
168 le64 crc;
169 le32 osmajor;
170 le32 osminor;
171 le32 build;
172 le16 packmajor;
173 le16 packminor;
174 } ;
175
176 /**
177 * global variables
178 */
179 static u8 *g_buf = NULL;
180 static int g_mft_bitmap_byte_size = 0;
181 static u8 *g_mft_bitmap = NULL;
182 static int g_lcn_bitmap_byte_size = 0;
183 static int g_dynamic_buf_size = 0;
184 static u8 *g_dynamic_buf = NULL;
185 static struct UPCASEINFO *g_upcaseinfo = NULL;
186 static runlist *g_rl_mft = NULL;
187 static runlist *g_rl_mft_bmp = NULL;
188 static runlist *g_rl_mftmirr = NULL;
189 static runlist *g_rl_logfile = NULL;
190 static runlist *g_rl_boot = NULL;
191 static runlist *g_rl_bad = NULL;
192 static INDEX_ALLOCATION *g_index_block = NULL;
193 static ntfs_volume *g_vol = NULL;
194 static int g_mft_size = 0;
195 static long long g_mft_lcn = 0; /* lcn of $MFT, $DATA attribute */
196 static long long g_mftmirr_lcn = 0; /* lcn of $MFTMirr, $DATA */
197 static long long g_logfile_lcn = 0; /* lcn of $LogFile, $DATA */
198 static int g_logfile_size = 0; /* in bytes, determined from volume_size */
199 static long long g_mft_zone_end = 0; /* Determined from volume_size and mft_zone_multiplier, in clusters */
200 static long long g_num_bad_blocks = 0; /* Number of bad clusters */
201 static long long *g_bad_blocks = NULL; /* Array of bad clusters */
202
203 static struct BITMAP_ALLOCATION *g_allocation = NULL; /* Head of cluster allocations */
204
205 /**
206 * struct mkntfs_options
207 */
208 static struct mkntfs_options {
209 char *dev_name; /* Name of the device, or file, to use */
210 BOOL enable_compression; /* -C, enables compression of all files on the volume by default. */
211 BOOL quick_format; /* -f or -Q, fast format, don't zero the volume first. */
212 BOOL force; /* -F, force fs creation. */
213 long heads; /* -H, number of heads on device */
214 BOOL disable_indexing; /* -I, disables indexing of file contents on the volume by default. */
215 BOOL no_action; /* -n, do not write to device, only display what would be done. */
216 long long part_start_sect; /* -p, start sector of partition on parent device */
217 long sector_size; /* -s, in bytes, power of 2, default is 512 bytes. */
218 long sectors_per_track; /* -S, number of sectors per track on device */
219 BOOL use_epoch_time; /* -T, fake the time to be 00:00:00 UTC, Jan 1, 1970. */
220 long mft_zone_multiplier; /* -z, value from 1 to 4. Default is 1. */
221 long long num_sectors; /* size of device in sectors */
222 long cluster_size; /* -c, format with this cluster-size */
223 BOOL with_uuid; /* -U, request setting an uuid */
224 char *label; /* -L, volume label */
225 } opts;
226
227 /*
228 * crc64, adapted from http://rpm5.org/docs/api/digest_8c-source.html
229 * ECMA-182 polynomial, see
230 * http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-182.pdf
231 */
232 /* make sure the needed types are defined */
233 #undef byte
234 #undef uint32_t
235 #undef uint64_t
236 #define byte u8
237 #define uint32_t u32
238 #define uint64_t u64
crc64(uint64_t crc,const byte * data,size_t size)239 static uint64_t crc64(uint64_t crc, const byte * data, size_t size)
240 /*@*/
241 {
242 static uint64_t polynomial = 0x9a6c9329ac4bc9b5ULL;
243 static uint64_t xorout = 0xffffffffffffffffULL;
244 static uint64_t table[256];
245
246 crc ^= xorout;
247
248 if (data == NULL) {
249 /* generate the table of CRC remainders for all possible bytes */
250 uint64_t c;
251 uint32_t i, j;
252 for (i = 0; i < 256; i++) {
253 c = i;
254 for (j = 0; j < 8; j++) {
255 if (c & 1)
256 c = polynomial ^ (c >> 1);
257 else
258 c = (c >> 1);
259 }
260 table[i] = c;
261 }
262 } else
263 while (size) {
264 crc = table[(crc ^ *data) & 0xff] ^ (crc >> 8);
265 size--;
266 data++;
267 }
268
269 crc ^= xorout;
270
271 return crc;
272 }
273
274 /*
275 * Mark a run of clusters as allocated
276 *
277 * Returns FALSE if unsuccessful
278 */
279
bitmap_allocate(LCN lcn,s64 length)280 static BOOL bitmap_allocate(LCN lcn, s64 length)
281 {
282 BOOL done;
283 struct BITMAP_ALLOCATION *p;
284 struct BITMAP_ALLOCATION *q;
285 struct BITMAP_ALLOCATION *newall;
286
287 done = TRUE;
288 if (length) {
289 p = g_allocation;
290 q = (struct BITMAP_ALLOCATION*)NULL;
291 /* locate the first run which starts beyond the requested lcn */
292 while (p && (p->lcn <= lcn)) {
293 q = p;
294 p = p->next;
295 }
296 /* make sure the requested lcns were not allocated */
297 if ((q && ((q->lcn + q->length) > lcn))
298 || (p && ((lcn + length) > p->lcn))) {
299 ntfs_log_error("Bitmap allocation error\n");
300 done = FALSE;
301 }
302 if (q && ((q->lcn + q->length) == lcn)) {
303 /* extend current run, no overlapping possible */
304 q->length += length;
305 } else {
306 newall = (struct BITMAP_ALLOCATION*)
307 ntfs_malloc(sizeof(struct BITMAP_ALLOCATION));
308 if (newall) {
309 newall->lcn = lcn;
310 newall->length = length;
311 newall->next = p;
312 if (q) q->next = newall;
313 else g_allocation = newall;
314 } else {
315 done = FALSE;
316 ntfs_log_perror("Not enough memory");
317 }
318 }
319 }
320 return (done);
321 }
322
323 /*
324 * Mark a run of cluster as not allocated
325 *
326 * Returns FALSE if unsuccessful
327 * (freeing free clusters is not considered as an error)
328 */
329
bitmap_deallocate(LCN lcn,s64 length)330 static BOOL bitmap_deallocate(LCN lcn, s64 length)
331 {
332 BOOL done;
333 struct BITMAP_ALLOCATION *p;
334 struct BITMAP_ALLOCATION *q;
335 LCN first, last;
336 s64 begin_length, end_length;
337
338 done = TRUE;
339 if (length) {
340 p = g_allocation;
341 q = (struct BITMAP_ALLOCATION*)NULL;
342 /* locate a run which has a common portion */
343 while (p) {
344 first = (p->lcn > lcn ? p->lcn : lcn);
345 last = ((p->lcn + p->length) < (lcn + length)
346 ? p->lcn + p->length : lcn + length);
347 if (first < last) {
348 /* get the parts which must be kept */
349 begin_length = first - p->lcn;
350 end_length = p->lcn + p->length - last;
351 /* delete the entry */
352 if (q)
353 q->next = p->next;
354 else
355 g_allocation = p->next;
356 free(p);
357 /* reallocate the beginning and the end */
358 if (begin_length
359 && !bitmap_allocate(first - begin_length,
360 begin_length))
361 done = FALSE;
362 if (end_length
363 && !bitmap_allocate(last, end_length))
364 done = FALSE;
365 /* restart a full search */
366 p = g_allocation;
367 q = (struct BITMAP_ALLOCATION*)NULL;
368 } else {
369 q = p;
370 p = p->next;
371 }
372 }
373 }
374 return (done);
375 }
376
377 /*
378 * Get the allocation status of a single cluster
379 * and mark as allocated
380 *
381 * Returns 1 if the cluster was previously allocated
382 */
383
bitmap_get_and_set(LCN lcn,unsigned long length)384 static int bitmap_get_and_set(LCN lcn, unsigned long length)
385 {
386 struct BITMAP_ALLOCATION *p;
387 struct BITMAP_ALLOCATION *q;
388 int bit;
389
390 if (length == 1) {
391 p = g_allocation;
392 q = (struct BITMAP_ALLOCATION*)NULL;
393 /* locate the first run which starts beyond the requested lcn */
394 while (p && (p->lcn <= lcn)) {
395 q = p;
396 p = p->next;
397 }
398 if (q && (q->lcn <= lcn) && ((q->lcn + q->length) > lcn))
399 bit = 1; /* was allocated */
400 else {
401 bitmap_allocate(lcn, length);
402 bit = 0;
403 }
404 } else {
405 ntfs_log_error("Can only allocate a single cluster at a time\n");
406 bit = 0;
407 }
408 return (bit);
409 }
410
411 /*
412 * Build a section of the bitmap according to allocation
413 */
414
bitmap_build(u8 * buf,LCN lcn,s64 length)415 static void bitmap_build(u8 *buf, LCN lcn, s64 length)
416 {
417 struct BITMAP_ALLOCATION *p;
418 LCN first, last;
419 int j; /* byte number */
420 int bn; /* bit number */
421
422 for (j=0; (8*j)<length; j++)
423 buf[j] = 0;
424 for (p=g_allocation; p; p=p->next) {
425 first = (p->lcn > lcn ? p->lcn : lcn);
426 last = ((p->lcn + p->length) < (lcn + length)
427 ? p->lcn + p->length : lcn + length);
428 if (first < last) {
429 bn = first - lcn;
430 /* initial partial byte, if any */
431 while ((bn < (last - lcn)) && (bn & 7)) {
432 buf[bn >> 3] |= 1 << (bn & 7);
433 bn++;
434 }
435 /* full bytes */
436 while (bn < (last - lcn - 7)) {
437 buf[bn >> 3] = 255;
438 bn += 8;
439 }
440 /* final partial byte, if any */
441 while (bn < (last - lcn)) {
442 buf[bn >> 3] |= 1 << (bn & 7);
443 bn++;
444 }
445 }
446 }
447 }
448
449 /**
450 * mkntfs_init_options
451 */
mkntfs_init_options(struct mkntfs_options * opts2)452 static void mkntfs_init_options(struct mkntfs_options *opts2)
453 {
454 if (!opts2)
455 return;
456
457 memset(opts2, 0, sizeof(*opts2));
458
459 /* Mark all the numeric options as "unset". */
460 opts2->cluster_size = -1;
461 opts2->heads = -1;
462 opts2->mft_zone_multiplier = -1;
463 opts2->num_sectors = -1;
464 opts2->part_start_sect = -1;
465 opts2->sector_size = -1;
466 opts2->sectors_per_track = -1;
467 }
468
469 /**
470 * mkntfs_time
471 */
mkntfs_time(void)472 static ntfs_time mkntfs_time(void)
473 {
474 struct timespec ts;
475
476 ts.tv_sec = 0;
477 ts.tv_nsec = 0;
478 if (!opts.use_epoch_time)
479 ts.tv_sec = time(NULL);
480 return timespec2ntfs(ts);
481 }
482
483 /**
484 * append_to_bad_blocks
485 */
append_to_bad_blocks(unsigned long long block)486 static BOOL append_to_bad_blocks(unsigned long long block)
487 {
488 long long *new_buf;
489
490 if (!(g_num_bad_blocks & 15)) {
491 new_buf = realloc(g_bad_blocks, (g_num_bad_blocks + 16) *
492 sizeof(long long));
493 if (!new_buf) {
494 ntfs_log_perror("Reallocating memory for bad blocks "
495 "list failed");
496 return FALSE;
497 }
498 g_bad_blocks = new_buf;
499 }
500 g_bad_blocks[g_num_bad_blocks++] = block;
501 return TRUE;
502 }
503
504 /**
505 * mkntfs_write
506 */
mkntfs_write(struct ntfs_device * dev,const void * b,long long count)507 static long long mkntfs_write(struct ntfs_device *dev,
508 const void *b, long long count)
509 {
510 long long bytes_written, total;
511 int retry;
512
513 if (opts.no_action)
514 return count;
515 total = 0LL;
516 retry = 0;
517 do {
518 bytes_written = dev->d_ops->write(dev, b, count);
519 if (bytes_written == -1LL) {
520 retry = errno;
521 ntfs_log_perror("Error writing to %s", dev->d_name);
522 errno = retry;
523 return bytes_written;
524 } else if (!bytes_written) {
525 retry++;
526 } else {
527 count -= bytes_written;
528 total += bytes_written;
529 }
530 } while (count && retry < 3);
531 if (count)
532 ntfs_log_error("Failed to complete writing to %s after three retries."
533 "\n", dev->d_name);
534 return total;
535 }
536
537 /**
538 * Build and write a part of the global bitmap
539 * without overflowing from the allocated buffer
540 *
541 * mkntfs_bitmap_write
542 */
mkntfs_bitmap_write(struct ntfs_device * dev,s64 offset,s64 length)543 static s64 mkntfs_bitmap_write(struct ntfs_device *dev,
544 s64 offset, s64 length)
545 {
546 s64 partial_length;
547 s64 written;
548
549 partial_length = length;
550 if (partial_length > g_dynamic_buf_size)
551 partial_length = g_dynamic_buf_size;
552 /* create a partial bitmap section, and write it */
553 bitmap_build(g_dynamic_buf,offset << 3,partial_length << 3);
554 written = dev->d_ops->write(dev, g_dynamic_buf, partial_length);
555 return (written);
556 }
557
558 /**
559 * Build and write a part of the log file
560 * without overflowing from the allocated buffer
561 *
562 * mkntfs_logfile_write
563 */
mkntfs_logfile_write(struct ntfs_device * dev,s64 offset,s64 length)564 static s64 mkntfs_logfile_write(struct ntfs_device *dev,
565 s64 offset __attribute__((unused)), s64 length)
566 {
567 s64 partial_length;
568 s64 written;
569
570 partial_length = length;
571 if (partial_length > g_dynamic_buf_size)
572 partial_length = g_dynamic_buf_size;
573 /* create a partial bad cluster section, and write it */
574 memset(g_dynamic_buf, -1, partial_length);
575 written = dev->d_ops->write(dev, g_dynamic_buf, partial_length);
576 return (written);
577 }
578
579 /**
580 * ntfs_rlwrite - Write to disk the clusters contained in the runlist @rl
581 * taking the data from @val. Take @val_len bytes from @val and pad the
582 * rest with zeroes.
583 *
584 * If the @rl specifies a completely sparse file, @val is allowed to be NULL.
585 *
586 * @inited_size if not NULL points to an output variable which will contain
587 * the actual number of bytes written to disk. I.e. this will not include
588 * sparse bytes for example.
589 *
590 * Return the number of bytes written (minus padding) or -1 on error. Errno
591 * will be set to the error code.
592 */
ntfs_rlwrite(struct ntfs_device * dev,const runlist * rl,const u8 * val,const s64 val_len,s64 * inited_size,WRITE_TYPE write_type)593 static s64 ntfs_rlwrite(struct ntfs_device *dev, const runlist *rl,
594 const u8 *val, const s64 val_len, s64 *inited_size,
595 WRITE_TYPE write_type)
596 {
597 s64 bytes_written, total, length, delta;
598 int retry, i;
599
600 if (inited_size)
601 *inited_size = 0LL;
602 if (opts.no_action)
603 return val_len;
604 total = 0LL;
605 delta = 0LL;
606 for (i = 0; rl[i].length; i++) {
607 length = rl[i].length * g_vol->cluster_size;
608 /* Don't write sparse runs. */
609 if (rl[i].lcn == -1) {
610 total += length;
611 if (!val)
612 continue;
613 /* TODO: Check that *val is really zero at pos and len. */
614 continue;
615 }
616 /*
617 * Break up the write into the real data write and then a write
618 * of zeroes between the end of the real data and the end of
619 * the (last) run.
620 */
621 if (total + length > val_len) {
622 delta = length;
623 length = val_len - total;
624 delta -= length;
625 }
626 if (dev->d_ops->seek(dev, rl[i].lcn * g_vol->cluster_size,
627 SEEK_SET) == (off_t)-1)
628 return -1LL;
629 retry = 0;
630 do {
631 /* use specific functions if buffer is not prefilled */
632 switch (write_type) {
633 case WRITE_BITMAP :
634 bytes_written = mkntfs_bitmap_write(dev,
635 total, length);
636 break;
637 case WRITE_LOGFILE :
638 bytes_written = mkntfs_logfile_write(dev,
639 total, length);
640 break;
641 default :
642 bytes_written = dev->d_ops->write(dev,
643 val + total, length);
644 break;
645 }
646 if (bytes_written == -1LL) {
647 retry = errno;
648 ntfs_log_perror("Error writing to %s",
649 dev->d_name);
650 errno = retry;
651 return bytes_written;
652 }
653 if (bytes_written) {
654 length -= bytes_written;
655 total += bytes_written;
656 if (inited_size)
657 *inited_size += bytes_written;
658 } else {
659 retry++;
660 }
661 } while (length && retry < 3);
662 if (length) {
663 ntfs_log_error("Failed to complete writing to %s after three "
664 "retries.\n", dev->d_name);
665 return total;
666 }
667 }
668 if (delta) {
669 int eo;
670 char *b = ntfs_calloc(delta);
671 if (!b)
672 return -1;
673 bytes_written = mkntfs_write(dev, b, delta);
674 eo = errno;
675 free(b);
676 errno = eo;
677 if (bytes_written == -1LL)
678 return bytes_written;
679 }
680 return total;
681 }
682
683 /**
684 * make_room_for_attribute - make room for an attribute inside an mft record
685 * @m: mft record
686 * @pos: position at which to make space
687 * @size: byte size to make available at this position
688 *
689 * @pos points to the attribute in front of which we want to make space.
690 *
691 * Return 0 on success or -errno on error. Possible error codes are:
692 *
693 * -ENOSPC There is not enough space available to complete
694 * operation. The caller has to make space before calling
695 * this.
696 * -EINVAL Can only occur if mkntfs was compiled with -DDEBUG. Means
697 * the input parameters were faulty.
698 */
make_room_for_attribute(MFT_RECORD * m,char * pos,const u32 size)699 static int make_room_for_attribute(MFT_RECORD *m, char *pos, const u32 size)
700 {
701 u32 biu;
702
703 if (!size)
704 return 0;
705 #ifdef DEBUG
706 /*
707 * Rigorous consistency checks. Always return -EINVAL even if more
708 * appropriate codes exist for simplicity of parsing the return value.
709 */
710 if (size != ((size + 7) & ~7)) {
711 ntfs_log_error("make_room_for_attribute() received non 8-byte aligned "
712 "size.\n");
713 return -EINVAL;
714 }
715 if (!m || !pos)
716 return -EINVAL;
717 if (pos < (char*)m || pos + size < (char*)m ||
718 pos > (char*)m + le32_to_cpu(m->bytes_allocated) ||
719 pos + size > (char*)m + le32_to_cpu(m->bytes_allocated))
720 return -EINVAL;
721 /* The -8 is for the attribute terminator. */
722 if (pos - (char*)m > (int)le32_to_cpu(m->bytes_in_use) - 8)
723 return -EINVAL;
724 #endif
725 biu = le32_to_cpu(m->bytes_in_use);
726 /* Do we have enough space? */
727 if (biu + size > le32_to_cpu(m->bytes_allocated))
728 return -ENOSPC;
729 /* Move everything after pos to pos + size. */
730 memmove(pos + size, pos, biu - (pos - (char*)m));
731 /* Update mft record. */
732 m->bytes_in_use = cpu_to_le32(biu + size);
733 return 0;
734 }
735
736 /**
737 * deallocate_scattered_clusters
738 */
deallocate_scattered_clusters(const runlist * rl)739 static void deallocate_scattered_clusters(const runlist *rl)
740 {
741 int i;
742
743 if (!rl)
744 return;
745 /* Iterate over all runs in the runlist @rl. */
746 for (i = 0; rl[i].length; i++) {
747 /* Skip sparse runs. */
748 if (rl[i].lcn == -1LL)
749 continue;
750 /* Deallocate the current run. */
751 bitmap_deallocate(rl[i].lcn, rl[i].length);
752 }
753 }
754
755 /**
756 * allocate_scattered_clusters
757 * @clusters: Amount of clusters to allocate.
758 *
759 * Allocate @clusters and create a runlist of the allocated clusters.
760 *
761 * Return the allocated runlist. Caller has to free the runlist when finished
762 * with it.
763 *
764 * On error return NULL and errno is set to the error code.
765 *
766 * TODO: We should be returning the size as well, but for mkntfs this is not
767 * necessary.
768 */
allocate_scattered_clusters(s64 clusters)769 static runlist * allocate_scattered_clusters(s64 clusters)
770 {
771 runlist *rl = NULL, *rlt;
772 VCN vcn = 0LL;
773 LCN lcn, end, prev_lcn = 0LL;
774 int rlpos = 0;
775 int rlsize = 0;
776 s64 prev_run_len = 0LL;
777 char bit;
778
779 end = g_vol->nr_clusters;
780 /* Loop until all clusters are allocated. */
781 while (clusters) {
782 /* Loop in current zone until we run out of free clusters. */
783 for (lcn = g_mft_zone_end; lcn < end; lcn++) {
784 bit = bitmap_get_and_set(lcn,1);
785 if (bit)
786 continue;
787 /*
788 * Reallocate memory if necessary. Make sure we have
789 * enough for the terminator entry as well.
790 */
791 if ((rlpos + 2) * (int)sizeof(runlist) >= rlsize) {
792 rlsize += 4096; /* PAGE_SIZE */
793 rlt = realloc(rl, rlsize);
794 if (!rlt)
795 goto err_end;
796 rl = rlt;
797 }
798 /* Coalesce with previous run if adjacent LCNs. */
799 if (prev_lcn == lcn - prev_run_len) {
800 rl[rlpos - 1].length = ++prev_run_len;
801 vcn++;
802 } else {
803 rl[rlpos].vcn = vcn++;
804 rl[rlpos].lcn = lcn;
805 prev_lcn = lcn;
806 rl[rlpos].length = 1LL;
807 prev_run_len = 1LL;
808 rlpos++;
809 }
810 /* Done? */
811 if (!--clusters) {
812 /* Add terminator element and return. */
813 rl[rlpos].vcn = vcn;
814 rl[rlpos].lcn = 0LL;
815 rl[rlpos].length = 0LL;
816 return rl;
817 }
818
819 }
820 /* Switch to next zone, decreasing mft zone by factor 2. */
821 end = g_mft_zone_end;
822 g_mft_zone_end >>= 1;
823 /* Have we run out of space on the volume? */
824 if (g_mft_zone_end <= 0)
825 goto err_end;
826 }
827 return rl;
828 err_end:
829 if (rl) {
830 /* Add terminator element. */
831 rl[rlpos].vcn = vcn;
832 rl[rlpos].lcn = -1LL;
833 rl[rlpos].length = 0LL;
834 /* Deallocate all allocated clusters. */
835 deallocate_scattered_clusters(rl);
836 /* Free the runlist. */
837 free(rl);
838 }
839 return NULL;
840 }
841
842 /**
843 * ntfs_attr_find - find (next) attribute in mft record
844 * @type: attribute type to find
845 * @name: attribute name to find (optional, i.e. NULL means don't care)
846 * @name_len: attribute name length (only needed if @name present)
847 * @ic: IGNORE_CASE or CASE_SENSITIVE (ignored if @name not present)
848 * @val: attribute value to find (optional, resident attributes only)
849 * @val_len: attribute value length
850 * @ctx: search context with mft record and attribute to search from
851 *
852 * You shouldn't need to call this function directly. Use lookup_attr() instead.
853 *
854 * ntfs_attr_find() takes a search context @ctx as parameter and searches the
855 * mft record specified by @ctx->mrec, beginning at @ctx->attr, for an
856 * attribute of @type, optionally @name and @val. If found, ntfs_attr_find()
857 * returns 0 and @ctx->attr will point to the found attribute.
858 *
859 * If not found, ntfs_attr_find() returns -1, with errno set to ENOENT and
860 * @ctx->attr will point to the attribute before which the attribute being
861 * searched for would need to be inserted if such an action were to be desired.
862 *
863 * On actual error, ntfs_attr_find() returns -1 with errno set to the error
864 * code but not to ENOENT. In this case @ctx->attr is undefined and in
865 * particular do not rely on it not changing.
866 *
867 * If @ctx->is_first is TRUE, the search begins with @ctx->attr itself. If it
868 * is FALSE, the search begins after @ctx->attr.
869 *
870 * If @type is AT_UNUSED, return the first found attribute, i.e. one can
871 * enumerate all attributes by setting @type to AT_UNUSED and then calling
872 * ntfs_attr_find() repeatedly until it returns -1 with errno set to ENOENT to
873 * indicate that there are no more entries. During the enumeration, each
874 * successful call of ntfs_attr_find() will return the next attribute in the
875 * mft record @ctx->mrec.
876 *
877 * If @type is AT_END, seek to the end and return -1 with errno set to ENOENT.
878 * AT_END is not a valid attribute, its length is zero for example, thus it is
879 * safer to return error instead of success in this case. This also allows us
880 * to interoperate cleanly with ntfs_external_attr_find().
881 *
882 * If @name is AT_UNNAMED search for an unnamed attribute. If @name is present
883 * but not AT_UNNAMED search for a named attribute matching @name. Otherwise,
884 * match both named and unnamed attributes.
885 *
886 * If @ic is IGNORE_CASE, the @name comparison is not case sensitive and
887 * @ctx->ntfs_ino must be set to the ntfs inode to which the mft record
888 * @ctx->mrec belongs. This is so we can get at the ntfs volume and hence at
889 * the upcase table. If @ic is CASE_SENSITIVE, the comparison is case
890 * sensitive. When @name is present, @name_len is the @name length in Unicode
891 * characters.
892 *
893 * If @name is not present (NULL), we assume that the unnamed attribute is
894 * being searched for.
895 *
896 * Finally, the resident attribute value @val is looked for, if present.
897 * If @val is not present (NULL), @val_len is ignored.
898 *
899 * ntfs_attr_find() only searches the specified mft record and it ignores the
900 * presence of an attribute list attribute (unless it is the one being searched
901 * for, obviously). If you need to take attribute lists into consideration, use
902 * ntfs_attr_lookup() instead (see below). This also means that you cannot use
903 * ntfs_attr_find() to search for extent records of non-resident attributes, as
904 * extents with lowest_vcn != 0 are usually described by the attribute list
905 * attribute only. - Note that it is possible that the first extent is only in
906 * the attribute list while the last extent is in the base mft record, so don't
907 * rely on being able to find the first extent in the base mft record.
908 *
909 * Warning: Never use @val when looking for attribute types which can be
910 * non-resident as this most likely will result in a crash!
911 */
mkntfs_attr_find(const ATTR_TYPES type,const ntfschar * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const u8 * val,const u32 val_len,ntfs_attr_search_ctx * ctx)912 static int mkntfs_attr_find(const ATTR_TYPES type, const ntfschar *name,
913 const u32 name_len, const IGNORE_CASE_BOOL ic,
914 const u8 *val, const u32 val_len, ntfs_attr_search_ctx *ctx)
915 {
916 ATTR_RECORD *a;
917 ntfschar *upcase = g_vol->upcase;
918 u32 upcase_len = g_vol->upcase_len;
919
920 /*
921 * Iterate over attributes in mft record starting at @ctx->attr, or the
922 * attribute following that, if @ctx->is_first is TRUE.
923 */
924 if (ctx->is_first) {
925 a = ctx->attr;
926 ctx->is_first = FALSE;
927 } else {
928 a = (ATTR_RECORD*)((char*)ctx->attr +
929 le32_to_cpu(ctx->attr->length));
930 }
931 for (;; a = (ATTR_RECORD*)((char*)a + le32_to_cpu(a->length))) {
932 if (p2n(a) < p2n(ctx->mrec) || (char*)a > (char*)ctx->mrec +
933 le32_to_cpu(ctx->mrec->bytes_allocated))
934 break;
935 ctx->attr = a;
936 if (((type != AT_UNUSED) && (le32_to_cpu(a->type) >
937 le32_to_cpu(type))) ||
938 (a->type == AT_END)) {
939 errno = ENOENT;
940 return -1;
941 }
942 if (!a->length)
943 break;
944 /* If this is an enumeration return this attribute. */
945 if (type == AT_UNUSED)
946 return 0;
947 if (a->type != type)
948 continue;
949 /*
950 * If @name is AT_UNNAMED we want an unnamed attribute.
951 * If @name is present, compare the two names.
952 * Otherwise, match any attribute.
953 */
954 if (name == AT_UNNAMED) {
955 /* The search failed if the found attribute is named. */
956 if (a->name_length) {
957 errno = ENOENT;
958 return -1;
959 }
960 } else if (name && !ntfs_names_are_equal(name, name_len,
961 (ntfschar*)((char*)a + le16_to_cpu(a->name_offset)),
962 a->name_length, ic, upcase, upcase_len)) {
963 int rc;
964
965 rc = ntfs_names_full_collate(name, name_len,
966 (ntfschar*)((char*)a +
967 le16_to_cpu(a->name_offset)),
968 a->name_length, IGNORE_CASE,
969 upcase, upcase_len);
970 /*
971 * If @name collates before a->name, there is no
972 * matching attribute.
973 */
974 if (rc == -1) {
975 errno = ENOENT;
976 return -1;
977 }
978 /* If the strings are not equal, continue search. */
979 if (rc)
980 continue;
981 rc = ntfs_names_full_collate(name, name_len,
982 (ntfschar*)((char*)a +
983 le16_to_cpu(a->name_offset)),
984 a->name_length, CASE_SENSITIVE,
985 upcase, upcase_len);
986 if (rc == -1) {
987 errno = ENOENT;
988 return -1;
989 }
990 if (rc)
991 continue;
992 }
993 /*
994 * The names match or @name not present and attribute is
995 * unnamed. If no @val specified, we have found the attribute
996 * and are done.
997 */
998 if (!val) {
999 return 0;
1000 /* @val is present; compare values. */
1001 } else {
1002 int rc;
1003
1004 rc = memcmp(val, (char*)a +le16_to_cpu(a->value_offset),
1005 min(val_len,
1006 le32_to_cpu(a->value_length)));
1007 /*
1008 * If @val collates before the current attribute's
1009 * value, there is no matching attribute.
1010 */
1011 if (!rc) {
1012 u32 avl;
1013 avl = le32_to_cpu(a->value_length);
1014 if (val_len == avl)
1015 return 0;
1016 if (val_len < avl) {
1017 errno = ENOENT;
1018 return -1;
1019 }
1020 } else if (rc < 0) {
1021 errno = ENOENT;
1022 return -1;
1023 }
1024 }
1025 }
1026 ntfs_log_trace("File is corrupt. Run chkdsk.\n");
1027 errno = EIO;
1028 return -1;
1029 }
1030
1031 /**
1032 * ntfs_attr_lookup - find an attribute in an ntfs inode
1033 * @type: attribute type to find
1034 * @name: attribute name to find (optional, i.e. NULL means don't care)
1035 * @name_len: attribute name length (only needed if @name present)
1036 * @ic: IGNORE_CASE or CASE_SENSITIVE (ignored if @name not present)
1037 * @lowest_vcn: lowest vcn to find (optional, non-resident attributes only)
1038 * @val: attribute value to find (optional, resident attributes only)
1039 * @val_len: attribute value length
1040 * @ctx: search context with mft record and attribute to search from
1041 *
1042 * Find an attribute in an ntfs inode. On first search @ctx->ntfs_ino must
1043 * be the base mft record and @ctx must have been obtained from a call to
1044 * ntfs_attr_get_search_ctx().
1045 *
1046 * This function transparently handles attribute lists and @ctx is used to
1047 * continue searches where they were left off at.
1048 *
1049 * If @type is AT_UNUSED, return the first found attribute, i.e. one can
1050 * enumerate all attributes by setting @type to AT_UNUSED and then calling
1051 * ntfs_attr_lookup() repeatedly until it returns -1 with errno set to ENOENT
1052 * to indicate that there are no more entries. During the enumeration, each
1053 * successful call of ntfs_attr_lookup() will return the next attribute, with
1054 * the current attribute being described by the search context @ctx.
1055 *
1056 * If @type is AT_END, seek to the end of the base mft record ignoring the
1057 * attribute list completely and return -1 with errno set to ENOENT. AT_END is
1058 * not a valid attribute, its length is zero for example, thus it is safer to
1059 * return error instead of success in this case. It should never be needed to
1060 * do this, but we implement the functionality because it allows for simpler
1061 * code inside ntfs_external_attr_find().
1062 *
1063 * If @name is AT_UNNAMED search for an unnamed attribute. If @name is present
1064 * but not AT_UNNAMED search for a named attribute matching @name. Otherwise,
1065 * match both named and unnamed attributes.
1066 *
1067 * After finishing with the attribute/mft record you need to call
1068 * ntfs_attr_put_search_ctx() to cleanup the search context (unmapping any
1069 * mapped extent inodes, etc).
1070 *
1071 * Return 0 if the search was successful and -1 if not, with errno set to the
1072 * error code.
1073 *
1074 * On success, @ctx->attr is the found attribute, it is in mft record
1075 * @ctx->mrec, and @ctx->al_entry is the attribute list entry for this
1076 * attribute with @ctx->base_* being the base mft record to which @ctx->attr
1077 * belongs. If no attribute list attribute is present @ctx->al_entry and
1078 * @ctx->base_* are NULL.
1079 *
1080 * On error ENOENT, i.e. attribute not found, @ctx->attr is set to the
1081 * attribute which collates just after the attribute being searched for in the
1082 * base ntfs inode, i.e. if one wants to add the attribute to the mft record
1083 * this is the correct place to insert it into, and if there is not enough
1084 * space, the attribute should be placed in an extent mft record.
1085 * @ctx->al_entry points to the position within @ctx->base_ntfs_ino->attr_list
1086 * at which the new attribute's attribute list entry should be inserted. The
1087 * other @ctx fields, base_ntfs_ino, base_mrec, and base_attr are set to NULL.
1088 * The only exception to this is when @type is AT_END, in which case
1089 * @ctx->al_entry is set to NULL also (see above).
1090 *
1091 * The following error codes are defined:
1092 * ENOENT Attribute not found, not an error as such.
1093 * EINVAL Invalid arguments.
1094 * EIO I/O error or corrupt data structures found.
1095 * ENOMEM Not enough memory to allocate necessary buffers.
1096 */
mkntfs_attr_lookup(const ATTR_TYPES type,const ntfschar * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const VCN lowest_vcn,const u8 * val,const u32 val_len,ntfs_attr_search_ctx * ctx)1097 static int mkntfs_attr_lookup(const ATTR_TYPES type, const ntfschar *name,
1098 const u32 name_len, const IGNORE_CASE_BOOL ic,
1099 const VCN lowest_vcn __attribute__((unused)), const u8 *val,
1100 const u32 val_len, ntfs_attr_search_ctx *ctx)
1101 {
1102 ntfs_inode *base_ni;
1103
1104 if (!ctx || !ctx->mrec || !ctx->attr) {
1105 errno = EINVAL;
1106 return -1;
1107 }
1108 if (ctx->base_ntfs_ino)
1109 base_ni = ctx->base_ntfs_ino;
1110 else
1111 base_ni = ctx->ntfs_ino;
1112 if (!base_ni || !NInoAttrList(base_ni) || type == AT_ATTRIBUTE_LIST)
1113 return mkntfs_attr_find(type, name, name_len, ic, val, val_len,
1114 ctx);
1115 errno = EOPNOTSUPP;
1116 return -1;
1117 }
1118
1119 /**
1120 * insert_positioned_attr_in_mft_record
1121 *
1122 * Create a non-resident attribute with a predefined on disk location
1123 * specified by the runlist @rl. The clusters specified by @rl are assumed to
1124 * be allocated already.
1125 *
1126 * Return 0 on success and -errno on error.
1127 */
insert_positioned_attr_in_mft_record(MFT_RECORD * m,const ATTR_TYPES type,const char * name,u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_FLAGS flags,const runlist * rl,const u8 * val,const s64 val_len)1128 static int insert_positioned_attr_in_mft_record(MFT_RECORD *m,
1129 const ATTR_TYPES type, const char *name, u32 name_len,
1130 const IGNORE_CASE_BOOL ic, const ATTR_FLAGS flags,
1131 const runlist *rl, const u8 *val, const s64 val_len)
1132 {
1133 ntfs_attr_search_ctx *ctx;
1134 ATTR_RECORD *a;
1135 u16 hdr_size;
1136 int asize, mpa_size, err, i;
1137 s64 bw = 0, inited_size;
1138 VCN highest_vcn;
1139 ntfschar *uname = NULL;
1140 int uname_len = 0;
1141 /*
1142 if (base record)
1143 attr_lookup();
1144 else
1145 */
1146
1147 uname = ntfs_str2ucs(name, &uname_len);
1148 if (!uname)
1149 return -errno;
1150
1151 /* Check if the attribute is already there. */
1152 ctx = ntfs_attr_get_search_ctx(NULL, m);
1153 if (!ctx) {
1154 ntfs_log_error("Failed to allocate attribute search context.\n");
1155 err = -ENOMEM;
1156 goto err_out;
1157 }
1158 if (ic == IGNORE_CASE) {
1159 ntfs_log_error("FIXME: Hit unimplemented code path #1.\n");
1160 err = -EOPNOTSUPP;
1161 goto err_out;
1162 }
1163 if (!mkntfs_attr_lookup(type, uname, uname_len, ic, 0, NULL, 0, ctx)) {
1164 err = -EEXIST;
1165 goto err_out;
1166 }
1167 if (errno != ENOENT) {
1168 ntfs_log_error("Corrupt inode.\n");
1169 err = -errno;
1170 goto err_out;
1171 }
1172 a = ctx->attr;
1173 if (flags & ATTR_COMPRESSION_MASK) {
1174 ntfs_log_error("Compressed attributes not supported yet.\n");
1175 /* FIXME: Compress attribute into a temporary buffer, set */
1176 /* val accordingly and save the compressed size. */
1177 err = -EOPNOTSUPP;
1178 goto err_out;
1179 }
1180 if (flags & (ATTR_IS_ENCRYPTED | ATTR_IS_SPARSE)) {
1181 ntfs_log_error("Encrypted/sparse attributes not supported.\n");
1182 err = -EOPNOTSUPP;
1183 goto err_out;
1184 }
1185 if (flags & ATTR_COMPRESSION_MASK) {
1186 hdr_size = 72;
1187 /* FIXME: This compression stuff is all wrong. Never mind for */
1188 /* now. (AIA) */
1189 if (val_len)
1190 mpa_size = 0; /* get_size_for_compressed_mapping_pairs(rl); */
1191 else
1192 mpa_size = 0;
1193 } else {
1194 hdr_size = 64;
1195 if (val_len) {
1196 mpa_size = ntfs_get_size_for_mapping_pairs(g_vol, rl, 0, INT_MAX);
1197 if (mpa_size < 0) {
1198 err = -errno;
1199 ntfs_log_error("Failed to get size for mapping "
1200 "pairs.\n");
1201 goto err_out;
1202 }
1203 } else {
1204 mpa_size = 0;
1205 }
1206 }
1207 /* Mapping pairs array and next attribute must be 8-byte aligned. */
1208 asize = (((int)hdr_size + ((name_len + 7) & ~7) + mpa_size) + 7) & ~7;
1209 /* Get the highest vcn. */
1210 for (i = 0, highest_vcn = 0LL; rl[i].length; i++)
1211 highest_vcn += rl[i].length;
1212 /* Does the value fit inside the allocated size? */
1213 if (highest_vcn * g_vol->cluster_size < val_len) {
1214 ntfs_log_error("BUG: Allocated size is smaller than data size!\n");
1215 err = -EINVAL;
1216 goto err_out;
1217 }
1218 err = make_room_for_attribute(m, (char*)a, asize);
1219 if (err == -ENOSPC) {
1220 /*
1221 * FIXME: Make space! (AIA)
1222 * can we make it non-resident? if yes, do that.
1223 * does it fit now? yes -> do it.
1224 * m's $DATA or $BITMAP+$INDEX_ALLOCATION resident?
1225 * yes -> make non-resident
1226 * does it fit now? yes -> do it.
1227 * make all attributes non-resident
1228 * does it fit now? yes -> do it.
1229 * m is a base record? yes -> allocate extension record
1230 * does the new attribute fit in there? yes -> do it.
1231 * split up runlist into extents and place each in an extension
1232 * record.
1233 * FIXME: the check for needing extension records should be
1234 * earlier on as it is very quick: asize > m->bytes_allocated?
1235 */
1236 err = -EOPNOTSUPP;
1237 goto err_out;
1238 #ifdef DEBUG
1239 } else if (err == -EINVAL) {
1240 ntfs_log_error("BUG(): in insert_positioned_attribute_in_mft_"
1241 "record(): make_room_for_attribute() returned "
1242 "error: EINVAL!\n");
1243 goto err_out;
1244 #endif
1245 }
1246 a->type = type;
1247 a->length = cpu_to_le32(asize);
1248 a->non_resident = 1;
1249 a->name_length = name_len;
1250 a->name_offset = cpu_to_le16(hdr_size);
1251 a->flags = flags;
1252 a->instance = m->next_attr_instance;
1253 m->next_attr_instance = cpu_to_le16((le16_to_cpu(m->next_attr_instance)
1254 + 1) & 0xffff);
1255 a->lowest_vcn = cpu_to_le64(0);
1256 a->highest_vcn = cpu_to_sle64(highest_vcn - 1LL);
1257 a->mapping_pairs_offset = cpu_to_le16(hdr_size + ((name_len + 7) & ~7));
1258 memset(a->reserved1, 0, sizeof(a->reserved1));
1259 /* FIXME: Allocated size depends on compression. */
1260 a->allocated_size = cpu_to_sle64(highest_vcn * g_vol->cluster_size);
1261 a->data_size = cpu_to_sle64(val_len);
1262 if (name_len)
1263 memcpy((char*)a + hdr_size, uname, name_len << 1);
1264 if (flags & ATTR_COMPRESSION_MASK) {
1265 if (flags & ATTR_COMPRESSION_MASK & ~ATTR_IS_COMPRESSED) {
1266 ntfs_log_error("Unknown compression format. Reverting "
1267 "to standard compression.\n");
1268 a->flags &= ~ATTR_COMPRESSION_MASK;
1269 a->flags |= ATTR_IS_COMPRESSED;
1270 }
1271 a->compression_unit = 4;
1272 inited_size = val_len;
1273 /* FIXME: Set the compressed size. */
1274 a->compressed_size = cpu_to_le64(0);
1275 /* FIXME: Write out the compressed data. */
1276 /* FIXME: err = build_mapping_pairs_compressed(); */
1277 err = -EOPNOTSUPP;
1278 } else {
1279 a->compression_unit = 0;
1280 if ((type == AT_DATA)
1281 && (m->mft_record_number
1282 == const_cpu_to_le32(FILE_LogFile)))
1283 bw = ntfs_rlwrite(g_vol->dev, rl, val, val_len,
1284 &inited_size, WRITE_LOGFILE);
1285 else
1286 bw = ntfs_rlwrite(g_vol->dev, rl, val, val_len,
1287 &inited_size, WRITE_STANDARD);
1288 if (bw != val_len) {
1289 ntfs_log_error("Error writing non-resident attribute "
1290 "value.\n");
1291 return -errno;
1292 }
1293 err = ntfs_mapping_pairs_build(g_vol, (u8*)a + hdr_size +
1294 ((name_len + 7) & ~7), mpa_size, rl, 0, NULL);
1295 }
1296 a->initialized_size = cpu_to_sle64(inited_size);
1297 if (err < 0 || bw != val_len) {
1298 /* FIXME: Handle error. */
1299 /* deallocate clusters */
1300 /* remove attribute */
1301 if (err >= 0)
1302 err = -EIO;
1303 ntfs_log_error("insert_positioned_attr_in_mft_record failed "
1304 "with error %i.\n", err < 0 ? err : (int)bw);
1305 }
1306 err_out:
1307 if (ctx)
1308 ntfs_attr_put_search_ctx(ctx);
1309 ntfs_ucsfree(uname);
1310 return err;
1311 }
1312
1313 /**
1314 * insert_non_resident_attr_in_mft_record
1315 *
1316 * Return 0 on success and -errno on error.
1317 */
insert_non_resident_attr_in_mft_record(MFT_RECORD * m,const ATTR_TYPES type,const char * name,u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_FLAGS flags,const u8 * val,const s64 val_len,WRITE_TYPE write_type)1318 static int insert_non_resident_attr_in_mft_record(MFT_RECORD *m,
1319 const ATTR_TYPES type, const char *name, u32 name_len,
1320 const IGNORE_CASE_BOOL ic, const ATTR_FLAGS flags,
1321 const u8 *val, const s64 val_len,
1322 WRITE_TYPE write_type)
1323 {
1324 ntfs_attr_search_ctx *ctx;
1325 ATTR_RECORD *a;
1326 u16 hdr_size;
1327 int asize, mpa_size, err, i;
1328 runlist *rl = NULL;
1329 s64 bw = 0;
1330 ntfschar *uname = NULL;
1331 int uname_len = 0;
1332 /*
1333 if (base record)
1334 attr_lookup();
1335 else
1336 */
1337
1338 uname = ntfs_str2ucs(name, &uname_len);
1339 if (!uname)
1340 return -errno;
1341
1342 /* Check if the attribute is already there. */
1343 ctx = ntfs_attr_get_search_ctx(NULL, m);
1344 if (!ctx) {
1345 ntfs_log_error("Failed to allocate attribute search context.\n");
1346 err = -ENOMEM;
1347 goto err_out;
1348 }
1349 if (ic == IGNORE_CASE) {
1350 ntfs_log_error("FIXME: Hit unimplemented code path #2.\n");
1351 err = -EOPNOTSUPP;
1352 goto err_out;
1353 }
1354 if (!mkntfs_attr_lookup(type, uname, uname_len, ic, 0, NULL, 0, ctx)) {
1355 err = -EEXIST;
1356 goto err_out;
1357 }
1358 if (errno != ENOENT) {
1359 ntfs_log_error("Corrupt inode.\n");
1360 err = -errno;
1361 goto err_out;
1362 }
1363 a = ctx->attr;
1364 if (flags & ATTR_COMPRESSION_MASK) {
1365 ntfs_log_error("Compressed attributes not supported yet.\n");
1366 /* FIXME: Compress attribute into a temporary buffer, set */
1367 /* val accordingly and save the compressed size. */
1368 err = -EOPNOTSUPP;
1369 goto err_out;
1370 }
1371 if (flags & (ATTR_IS_ENCRYPTED | ATTR_IS_SPARSE)) {
1372 ntfs_log_error("Encrypted/sparse attributes not supported.\n");
1373 err = -EOPNOTSUPP;
1374 goto err_out;
1375 }
1376 if (val_len) {
1377 rl = allocate_scattered_clusters((val_len +
1378 g_vol->cluster_size - 1) / g_vol->cluster_size);
1379 if (!rl) {
1380 err = -errno;
1381 ntfs_log_perror("Failed to allocate scattered clusters");
1382 goto err_out;
1383 }
1384 } else {
1385 rl = NULL;
1386 }
1387 if (flags & ATTR_COMPRESSION_MASK) {
1388 hdr_size = 72;
1389 /* FIXME: This compression stuff is all wrong. Never mind for */
1390 /* now. (AIA) */
1391 if (val_len)
1392 mpa_size = 0; /* get_size_for_compressed_mapping_pairs(rl); */
1393 else
1394 mpa_size = 0;
1395 } else {
1396 hdr_size = 64;
1397 if (val_len) {
1398 mpa_size = ntfs_get_size_for_mapping_pairs(g_vol, rl, 0, INT_MAX);
1399 if (mpa_size < 0) {
1400 err = -errno;
1401 ntfs_log_error("Failed to get size for mapping "
1402 "pairs.\n");
1403 goto err_out;
1404 }
1405 } else {
1406 mpa_size = 0;
1407 }
1408 }
1409 /* Mapping pairs array and next attribute must be 8-byte aligned. */
1410 asize = (((int)hdr_size + ((name_len + 7) & ~7) + mpa_size) + 7) & ~7;
1411 err = make_room_for_attribute(m, (char*)a, asize);
1412 if (err == -ENOSPC) {
1413 /*
1414 * FIXME: Make space! (AIA)
1415 * can we make it non-resident? if yes, do that.
1416 * does it fit now? yes -> do it.
1417 * m's $DATA or $BITMAP+$INDEX_ALLOCATION resident?
1418 * yes -> make non-resident
1419 * does it fit now? yes -> do it.
1420 * make all attributes non-resident
1421 * does it fit now? yes -> do it.
1422 * m is a base record? yes -> allocate extension record
1423 * does the new attribute fit in there? yes -> do it.
1424 * split up runlist into extents and place each in an extension
1425 * record.
1426 * FIXME: the check for needing extension records should be
1427 * earlier on as it is very quick: asize > m->bytes_allocated?
1428 */
1429 err = -EOPNOTSUPP;
1430 goto err_out;
1431 #ifdef DEBUG
1432 } else if (err == -EINVAL) {
1433 ntfs_log_error("BUG(): in insert_non_resident_attribute_in_"
1434 "mft_record(): make_room_for_attribute() "
1435 "returned error: EINVAL!\n");
1436 goto err_out;
1437 #endif
1438 }
1439 a->type = type;
1440 a->length = cpu_to_le32(asize);
1441 a->non_resident = 1;
1442 a->name_length = name_len;
1443 a->name_offset = cpu_to_le16(hdr_size);
1444 a->flags = flags;
1445 a->instance = m->next_attr_instance;
1446 m->next_attr_instance = cpu_to_le16((le16_to_cpu(m->next_attr_instance)
1447 + 1) & 0xffff);
1448 a->lowest_vcn = cpu_to_le64(0);
1449 for (i = 0; rl[i].length; i++)
1450 ;
1451 a->highest_vcn = cpu_to_sle64(rl[i].vcn - 1);
1452 a->mapping_pairs_offset = cpu_to_le16(hdr_size + ((name_len + 7) & ~7));
1453 memset(a->reserved1, 0, sizeof(a->reserved1));
1454 /* FIXME: Allocated size depends on compression. */
1455 a->allocated_size = cpu_to_sle64((val_len + (g_vol->cluster_size - 1)) &
1456 ~(g_vol->cluster_size - 1));
1457 a->data_size = cpu_to_sle64(val_len);
1458 a->initialized_size = cpu_to_sle64(val_len);
1459 if (name_len)
1460 memcpy((char*)a + hdr_size, uname, name_len << 1);
1461 if (flags & ATTR_COMPRESSION_MASK) {
1462 if (flags & ATTR_COMPRESSION_MASK & ~ATTR_IS_COMPRESSED) {
1463 ntfs_log_error("Unknown compression format. Reverting "
1464 "to standard compression.\n");
1465 a->flags &= ~ATTR_COMPRESSION_MASK;
1466 a->flags |= ATTR_IS_COMPRESSED;
1467 }
1468 a->compression_unit = 4;
1469 /* FIXME: Set the compressed size. */
1470 a->compressed_size = cpu_to_le64(0);
1471 /* FIXME: Write out the compressed data. */
1472 /* FIXME: err = build_mapping_pairs_compressed(); */
1473 err = -EOPNOTSUPP;
1474 } else {
1475 a->compression_unit = 0;
1476 bw = ntfs_rlwrite(g_vol->dev, rl, val, val_len, NULL,
1477 write_type);
1478 if (bw != val_len) {
1479 ntfs_log_error("Error writing non-resident attribute "
1480 "value.\n");
1481 return -errno;
1482 }
1483 err = ntfs_mapping_pairs_build(g_vol, (u8*)a + hdr_size +
1484 ((name_len + 7) & ~7), mpa_size, rl, 0, NULL);
1485 }
1486 if (err < 0 || bw != val_len) {
1487 /* FIXME: Handle error. */
1488 /* deallocate clusters */
1489 /* remove attribute */
1490 if (err >= 0)
1491 err = -EIO;
1492 ntfs_log_error("insert_non_resident_attr_in_mft_record failed with "
1493 "error %lld.\n", (long long) (err < 0 ? err : bw));
1494 }
1495 err_out:
1496 if (ctx)
1497 ntfs_attr_put_search_ctx(ctx);
1498 ntfs_ucsfree(uname);
1499 free(rl);
1500 return err;
1501 }
1502
1503 /**
1504 * insert_resident_attr_in_mft_record
1505 *
1506 * Return 0 on success and -errno on error.
1507 */
insert_resident_attr_in_mft_record(MFT_RECORD * m,const ATTR_TYPES type,const char * name,u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_FLAGS flags,const RESIDENT_ATTR_FLAGS res_flags,const u8 * val,const u32 val_len)1508 static int insert_resident_attr_in_mft_record(MFT_RECORD *m,
1509 const ATTR_TYPES type, const char *name, u32 name_len,
1510 const IGNORE_CASE_BOOL ic, const ATTR_FLAGS flags,
1511 const RESIDENT_ATTR_FLAGS res_flags,
1512 const u8 *val, const u32 val_len)
1513 {
1514 ntfs_attr_search_ctx *ctx;
1515 ATTR_RECORD *a;
1516 int asize, err;
1517 ntfschar *uname = NULL;
1518 int uname_len = 0;
1519 /*
1520 if (base record)
1521 mkntfs_attr_lookup();
1522 else
1523 */
1524
1525 uname = ntfs_str2ucs(name, &uname_len);
1526 if (!uname)
1527 return -errno;
1528
1529 /* Check if the attribute is already there. */
1530 ctx = ntfs_attr_get_search_ctx(NULL, m);
1531 if (!ctx) {
1532 ntfs_log_error("Failed to allocate attribute search context.\n");
1533 err = -ENOMEM;
1534 goto err_out;
1535 }
1536 if (ic == IGNORE_CASE) {
1537 ntfs_log_error("FIXME: Hit unimplemented code path #3.\n");
1538 err = -EOPNOTSUPP;
1539 goto err_out;
1540 }
1541 if (!mkntfs_attr_lookup(type, uname, uname_len, ic, 0, val, val_len,
1542 ctx)) {
1543 err = -EEXIST;
1544 goto err_out;
1545 }
1546 if (errno != ENOENT) {
1547 ntfs_log_error("Corrupt inode.\n");
1548 err = -errno;
1549 goto err_out;
1550 }
1551 a = ctx->attr;
1552 /* sizeof(resident attribute record header) == 24 */
1553 asize = ((24 + ((name_len*2 + 7) & ~7) + val_len) + 7) & ~7;
1554 err = make_room_for_attribute(m, (char*)a, asize);
1555 if (err == -ENOSPC) {
1556 /*
1557 * FIXME: Make space! (AIA)
1558 * can we make it non-resident? if yes, do that.
1559 * does it fit now? yes -> do it.
1560 * m's $DATA or $BITMAP+$INDEX_ALLOCATION resident?
1561 * yes -> make non-resident
1562 * does it fit now? yes -> do it.
1563 * make all attributes non-resident
1564 * does it fit now? yes -> do it.
1565 * m is a base record? yes -> allocate extension record
1566 * does the new attribute fit in there? yes -> do it.
1567 * split up runlist into extents and place each in an extension
1568 * record.
1569 * FIXME: the check for needing extension records should be
1570 * earlier on as it is very quick: asize > m->bytes_allocated?
1571 */
1572 err = -EOPNOTSUPP;
1573 goto err_out;
1574 }
1575 #ifdef DEBUG
1576 if (err == -EINVAL) {
1577 ntfs_log_error("BUG(): in insert_resident_attribute_in_mft_"
1578 "record(): make_room_for_attribute() returned "
1579 "error: EINVAL!\n");
1580 goto err_out;
1581 }
1582 #endif
1583 a->type = type;
1584 a->length = cpu_to_le32(asize);
1585 a->non_resident = 0;
1586 a->name_length = name_len;
1587 if (type == AT_OBJECT_ID)
1588 a->name_offset = const_cpu_to_le16(0);
1589 else
1590 a->name_offset = const_cpu_to_le16(24);
1591 a->flags = flags;
1592 a->instance = m->next_attr_instance;
1593 m->next_attr_instance = cpu_to_le16((le16_to_cpu(m->next_attr_instance)
1594 + 1) & 0xffff);
1595 a->value_length = cpu_to_le32(val_len);
1596 a->value_offset = cpu_to_le16(24 + ((name_len + 7) & ~7));
1597 a->resident_flags = res_flags;
1598 a->reservedR = 0;
1599 if (name_len)
1600 memcpy((char*)a + 24, uname, name_len << 1);
1601 if (val_len)
1602 memcpy((char*)a + le16_to_cpu(a->value_offset), val, val_len);
1603 err_out:
1604 if (ctx)
1605 ntfs_attr_put_search_ctx(ctx);
1606 ntfs_ucsfree(uname);
1607 return err;
1608 }
1609
1610
1611 /**
1612 * add_attr_std_info
1613 *
1614 * Return 0 on success or -errno on error.
1615 */
add_attr_std_info(MFT_RECORD * m,const FILE_ATTR_FLAGS flags,le32 security_id)1616 static int add_attr_std_info(MFT_RECORD *m, const FILE_ATTR_FLAGS flags,
1617 le32 security_id)
1618 {
1619 STANDARD_INFORMATION si;
1620 int err, sd_size;
1621
1622 sd_size = 48;
1623
1624 si.creation_time = mkntfs_time();
1625 si.last_data_change_time = si.creation_time;
1626 si.last_mft_change_time = si.creation_time;
1627 si.last_access_time = si.creation_time;
1628 si.file_attributes = flags; /* already LE */
1629 si.maximum_versions = cpu_to_le32(0);
1630 si.version_number = cpu_to_le32(0);
1631 si.class_id = cpu_to_le32(0);
1632 si.security_id = security_id;
1633 if (si.security_id != const_cpu_to_le32(0))
1634 sd_size = 72;
1635 /* FIXME: $Quota support... */
1636 si.owner_id = cpu_to_le32(0);
1637 si.quota_charged = cpu_to_le64(0ULL);
1638 /* FIXME: $UsnJrnl support... Not needed on fresh w2k3-volume */
1639 si.usn = cpu_to_le64(0ULL);
1640 /* NTFS 1.2: size of si = 48, NTFS 3.[01]: size of si = 72 */
1641 err = insert_resident_attr_in_mft_record(m, AT_STANDARD_INFORMATION,
1642 NULL, 0, CASE_SENSITIVE, const_cpu_to_le16(0),
1643 0, (u8*)&si, sd_size);
1644 if (err < 0)
1645 ntfs_log_perror("add_attr_std_info failed");
1646 return err;
1647 }
1648
1649 /*
1650 * Tell whether the unnamed data is non resident
1651 */
1652
non_resident_unnamed_data(MFT_RECORD * m)1653 static BOOL non_resident_unnamed_data(MFT_RECORD *m)
1654 {
1655 ATTR_RECORD *a;
1656 ntfs_attr_search_ctx *ctx;
1657 BOOL nonres;
1658
1659 ctx = ntfs_attr_get_search_ctx(NULL, m);
1660 if (ctx && !mkntfs_attr_find(AT_DATA,
1661 (const ntfschar*)NULL, 0, CASE_SENSITIVE,
1662 (u8*)NULL, 0, ctx)) {
1663 a = ctx->attr;
1664 nonres = a->non_resident != 0;
1665 } else {
1666 ntfs_log_error("BUG: Unnamed data not found\n");
1667 nonres = TRUE;
1668 }
1669 if (ctx)
1670 ntfs_attr_put_search_ctx(ctx);
1671 return (nonres);
1672 }
1673
1674 /*
1675 * Get the time stored in the standard information attribute
1676 */
1677
stdinfo_time(MFT_RECORD * m)1678 static ntfs_time stdinfo_time(MFT_RECORD *m)
1679 {
1680 STANDARD_INFORMATION *si;
1681 ntfs_attr_search_ctx *ctx;
1682 ntfs_time info_time;
1683
1684 ctx = ntfs_attr_get_search_ctx(NULL, m);
1685 if (ctx && !mkntfs_attr_find(AT_STANDARD_INFORMATION,
1686 (const ntfschar*)NULL, 0, CASE_SENSITIVE,
1687 (u8*)NULL, 0, ctx)) {
1688 si = (STANDARD_INFORMATION*)((char*)ctx->attr +
1689 le16_to_cpu(ctx->attr->value_offset));
1690 info_time = si->creation_time;
1691 } else {
1692 ntfs_log_error("BUG: Standard information not found\n");
1693 info_time = mkntfs_time();
1694 }
1695 if (ctx)
1696 ntfs_attr_put_search_ctx(ctx);
1697 return (info_time);
1698 }
1699
1700 /**
1701 * add_attr_file_name
1702 *
1703 * Return 0 on success or -errno on error.
1704 */
add_attr_file_name(MFT_RECORD * m,const leMFT_REF parent_dir,const s64 allocated_size,const s64 data_size,const FILE_ATTR_FLAGS flags,const u16 packed_ea_size,const u32 reparse_point_tag,const char * file_name,const FILE_NAME_TYPE_FLAGS file_name_type)1705 static int add_attr_file_name(MFT_RECORD *m, const leMFT_REF parent_dir,
1706 const s64 allocated_size, const s64 data_size,
1707 const FILE_ATTR_FLAGS flags, const u16 packed_ea_size,
1708 const u32 reparse_point_tag, const char *file_name,
1709 const FILE_NAME_TYPE_FLAGS file_name_type)
1710 {
1711 ntfs_attr_search_ctx *ctx;
1712 STANDARD_INFORMATION *si;
1713 FILE_NAME_ATTR *fn;
1714 int i, fn_size;
1715 ntfschar *uname;
1716
1717 /* Check if the attribute is already there. */
1718 ctx = ntfs_attr_get_search_ctx(NULL, m);
1719 if (!ctx) {
1720 ntfs_log_error("Failed to get attribute search context.\n");
1721 return -ENOMEM;
1722 }
1723 if (mkntfs_attr_lookup(AT_STANDARD_INFORMATION, AT_UNNAMED, 0,
1724 CASE_SENSITIVE, 0, NULL, 0, ctx)) {
1725 int eo = errno;
1726 ntfs_log_error("BUG: Standard information attribute not "
1727 "present in file record.\n");
1728 ntfs_attr_put_search_ctx(ctx);
1729 return -eo;
1730 }
1731 si = (STANDARD_INFORMATION*)((char*)ctx->attr +
1732 le16_to_cpu(ctx->attr->value_offset));
1733 i = (strlen(file_name) + 1) * sizeof(ntfschar);
1734 fn_size = sizeof(FILE_NAME_ATTR) + i;
1735 fn = ntfs_malloc(fn_size);
1736 if (!fn) {
1737 ntfs_attr_put_search_ctx(ctx);
1738 return -errno;
1739 }
1740 fn->parent_directory = parent_dir;
1741
1742 fn->creation_time = si->creation_time;
1743 fn->last_data_change_time = si->last_data_change_time;
1744 fn->last_mft_change_time = si->last_mft_change_time;
1745 fn->last_access_time = si->last_access_time;
1746 ntfs_attr_put_search_ctx(ctx);
1747
1748 fn->allocated_size = cpu_to_sle64(allocated_size);
1749 fn->data_size = cpu_to_sle64(data_size);
1750 fn->file_attributes = flags;
1751 /* These are in a union so can't have both. */
1752 if (packed_ea_size && reparse_point_tag) {
1753 free(fn);
1754 return -EINVAL;
1755 }
1756 if (packed_ea_size) {
1757 fn->packed_ea_size = cpu_to_le16(packed_ea_size);
1758 fn->reserved = cpu_to_le16(0);
1759 } else {
1760 fn->reparse_point_tag = cpu_to_le32(reparse_point_tag);
1761 }
1762 fn->file_name_type = file_name_type;
1763 uname = fn->file_name;
1764 i = ntfs_mbstoucs_libntfscompat(file_name, &uname, i);
1765 if (i < 1) {
1766 free(fn);
1767 return -EINVAL;
1768 }
1769 if (i > 0xff) {
1770 free(fn);
1771 return -ENAMETOOLONG;
1772 }
1773 /* No terminating null in file names. */
1774 fn->file_name_length = i;
1775 fn_size = sizeof(FILE_NAME_ATTR) + i * sizeof(ntfschar);
1776 i = insert_resident_attr_in_mft_record(m, AT_FILE_NAME, NULL, 0,
1777 CASE_SENSITIVE, const_cpu_to_le16(0),
1778 RESIDENT_ATTR_IS_INDEXED, (u8*)fn, fn_size);
1779 free(fn);
1780 if (i < 0)
1781 ntfs_log_error("add_attr_file_name failed: %s\n", strerror(-i));
1782 return i;
1783 }
1784
1785 /**
1786 * add_attr_object_id -
1787 *
1788 * Note we insert only a basic object id which only has the GUID and none of
1789 * the extended fields. This is because we currently only use this function
1790 * when creating the object id for the volume.
1791 *
1792 * Return 0 on success or -errno on error.
1793 */
add_attr_object_id(MFT_RECORD * m,const GUID * object_id)1794 static int add_attr_object_id(MFT_RECORD *m, const GUID *object_id)
1795 {
1796 OBJECT_ID_ATTR oi;
1797 int err;
1798
1799 oi = (OBJECT_ID_ATTR) {
1800 .object_id = *object_id,
1801 };
1802 err = insert_resident_attr_in_mft_record(m, AT_OBJECT_ID, NULL,
1803 0, CASE_SENSITIVE, const_cpu_to_le16(0),
1804 0, (u8*)&oi, sizeof(oi.object_id));
1805 if (err < 0)
1806 ntfs_log_error("add_attr_vol_info failed: %s\n", strerror(-err));
1807 return err;
1808 }
1809
1810 /**
1811 * add_attr_sd
1812 *
1813 * Create the security descriptor attribute adding the security descriptor @sd
1814 * of length @sd_len to the mft record @m.
1815 *
1816 * Return 0 on success or -errno on error.
1817 */
add_attr_sd(MFT_RECORD * m,const u8 * sd,const s64 sd_len)1818 static int add_attr_sd(MFT_RECORD *m, const u8 *sd, const s64 sd_len)
1819 {
1820 int err;
1821
1822 /* Does it fit? NO: create non-resident. YES: create resident. */
1823 if (le32_to_cpu(m->bytes_in_use) + 24 + sd_len >
1824 le32_to_cpu(m->bytes_allocated))
1825 err = insert_non_resident_attr_in_mft_record(m,
1826 AT_SECURITY_DESCRIPTOR, NULL, 0,
1827 CASE_SENSITIVE, const_cpu_to_le16(0), sd,
1828 sd_len, WRITE_STANDARD);
1829 else
1830 err = insert_resident_attr_in_mft_record(m,
1831 AT_SECURITY_DESCRIPTOR, NULL, 0,
1832 CASE_SENSITIVE, const_cpu_to_le16(0), 0, sd,
1833 sd_len);
1834 if (err < 0)
1835 ntfs_log_error("add_attr_sd failed: %s\n", strerror(-err));
1836 return err;
1837 }
1838
1839 /**
1840 * add_attr_data
1841 *
1842 * Return 0 on success or -errno on error.
1843 */
add_attr_data(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_FLAGS flags,const u8 * val,const s64 val_len)1844 static int add_attr_data(MFT_RECORD *m, const char *name, const u32 name_len,
1845 const IGNORE_CASE_BOOL ic, const ATTR_FLAGS flags,
1846 const u8 *val, const s64 val_len)
1847 {
1848 int err;
1849
1850 /*
1851 * Does it fit? NO: create non-resident. YES: create resident.
1852 *
1853 * FIXME: Introduced arbitrary limit of mft record allocated size - 512.
1854 * This is to get around the problem that if $Bitmap/$DATA becomes too
1855 * big, but is just small enough to be resident, we would make it
1856 * resident, and later run out of space when creating the other
1857 * attributes and this would cause us to abort as making resident
1858 * attributes non-resident is not supported yet.
1859 * The proper fix is to support making resident attribute non-resident.
1860 */
1861 if (le32_to_cpu(m->bytes_in_use) + 24 + val_len >
1862 min(le32_to_cpu(m->bytes_allocated),
1863 le32_to_cpu(m->bytes_allocated) - 512))
1864 err = insert_non_resident_attr_in_mft_record(m, AT_DATA, name,
1865 name_len, ic, flags, val, val_len,
1866 WRITE_STANDARD);
1867 else
1868 err = insert_resident_attr_in_mft_record(m, AT_DATA, name,
1869 name_len, ic, flags, 0, val, val_len);
1870
1871 if (err < 0)
1872 ntfs_log_error("add_attr_data failed: %s\n", strerror(-err));
1873 return err;
1874 }
1875
1876 /**
1877 * add_attr_data_positioned
1878 *
1879 * Create a non-resident data attribute with a predefined on disk location
1880 * specified by the runlist @rl. The clusters specified by @rl are assumed to
1881 * be allocated already.
1882 *
1883 * Return 0 on success or -errno on error.
1884 */
add_attr_data_positioned(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_FLAGS flags,const runlist * rl,const u8 * val,const s64 val_len)1885 static int add_attr_data_positioned(MFT_RECORD *m, const char *name,
1886 const u32 name_len, const IGNORE_CASE_BOOL ic,
1887 const ATTR_FLAGS flags, const runlist *rl,
1888 const u8 *val, const s64 val_len)
1889 {
1890 int err;
1891
1892 err = insert_positioned_attr_in_mft_record(m, AT_DATA, name, name_len,
1893 ic, flags, rl, val, val_len);
1894 if (err < 0)
1895 ntfs_log_error("add_attr_data_positioned failed: %s\n",
1896 strerror(-err));
1897 return err;
1898 }
1899
1900 /**
1901 * add_attr_vol_name
1902 *
1903 * Create volume name attribute specifying the volume name @vol_name as a null
1904 * terminated char string of length @vol_name_len (number of characters not
1905 * including the terminating null), which is converted internally to a little
1906 * endian ntfschar string. The name is at least 1 character long (though
1907 * Windows accepts zero characters), and at most 128 characters long (not
1908 * counting the terminating null).
1909 *
1910 * Return 0 on success or -errno on error.
1911 */
add_attr_vol_name(MFT_RECORD * m,const char * vol_name,const int vol_name_len)1912 static int add_attr_vol_name(MFT_RECORD *m, const char *vol_name,
1913 const int vol_name_len __attribute__((unused)))
1914 {
1915 ntfschar *uname = NULL;
1916 int uname_len = 0;
1917 int i;
1918
1919 if (vol_name) {
1920 uname_len = ntfs_mbstoucs(vol_name, &uname);
1921 if (uname_len < 0)
1922 return -errno;
1923 if (uname_len > 128) {
1924 free(uname);
1925 return -ENAMETOOLONG;
1926 }
1927 }
1928 i = insert_resident_attr_in_mft_record(m, AT_VOLUME_NAME, NULL, 0,
1929 CASE_SENSITIVE, const_cpu_to_le16(0),
1930 0, (u8*)uname, uname_len*sizeof(ntfschar));
1931 free(uname);
1932 if (i < 0)
1933 ntfs_log_error("add_attr_vol_name failed: %s\n", strerror(-i));
1934 return i;
1935 }
1936
1937 /**
1938 * add_attr_vol_info
1939 *
1940 * Return 0 on success or -errno on error.
1941 */
add_attr_vol_info(MFT_RECORD * m,const VOLUME_FLAGS flags,const u8 major_ver,const u8 minor_ver)1942 static int add_attr_vol_info(MFT_RECORD *m, const VOLUME_FLAGS flags,
1943 const u8 major_ver, const u8 minor_ver)
1944 {
1945 VOLUME_INFORMATION vi;
1946 int err;
1947
1948 memset(&vi, 0, sizeof(vi));
1949 vi.major_ver = major_ver;
1950 vi.minor_ver = minor_ver;
1951 vi.flags = flags & VOLUME_FLAGS_MASK;
1952 err = insert_resident_attr_in_mft_record(m, AT_VOLUME_INFORMATION, NULL,
1953 0, CASE_SENSITIVE, const_cpu_to_le16(0),
1954 0, (u8*)&vi, sizeof(vi));
1955 if (err < 0)
1956 ntfs_log_error("add_attr_vol_info failed: %s\n", strerror(-err));
1957 return err;
1958 }
1959
1960 /**
1961 * add_attr_index_root
1962 *
1963 * Return 0 on success or -errno on error.
1964 */
add_attr_index_root(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const ATTR_TYPES indexed_attr_type,const COLLATION_RULES collation_rule,const u32 index_block_size)1965 static int add_attr_index_root(MFT_RECORD *m, const char *name,
1966 const u32 name_len, const IGNORE_CASE_BOOL ic,
1967 const ATTR_TYPES indexed_attr_type,
1968 const COLLATION_RULES collation_rule,
1969 const u32 index_block_size)
1970 {
1971 INDEX_ROOT *r;
1972 INDEX_ENTRY_HEADER *e;
1973 int err, val_len;
1974
1975 val_len = sizeof(INDEX_ROOT) + sizeof(INDEX_ENTRY_HEADER);
1976 r = ntfs_malloc(val_len);
1977 if (!r)
1978 return -errno;
1979 r->type = (indexed_attr_type == AT_FILE_NAME)
1980 ? AT_FILE_NAME : const_cpu_to_le32(0);
1981 if (indexed_attr_type == AT_FILE_NAME &&
1982 collation_rule != COLLATION_FILE_NAME) {
1983 free(r);
1984 ntfs_log_error("add_attr_index_root: indexed attribute is $FILE_NAME "
1985 "but collation rule is not COLLATION_FILE_NAME.\n");
1986 return -EINVAL;
1987 }
1988 r->collation_rule = collation_rule;
1989 r->index_block_size = cpu_to_le32(index_block_size);
1990 if (index_block_size >= g_vol->cluster_size) {
1991 if (index_block_size % g_vol->cluster_size) {
1992 ntfs_log_error("add_attr_index_root: index block size is not "
1993 "a multiple of the cluster size.\n");
1994 free(r);
1995 return -EINVAL;
1996 }
1997 r->clusters_per_index_block = index_block_size /
1998 g_vol->cluster_size;
1999 } else { /* if (g_vol->cluster_size > index_block_size) */
2000 if (index_block_size & (index_block_size - 1)) {
2001 ntfs_log_error("add_attr_index_root: index block size is not "
2002 "a power of 2.\n");
2003 free(r);
2004 return -EINVAL;
2005 }
2006 if (index_block_size < (u32)opts.sector_size) {
2007 ntfs_log_error("add_attr_index_root: index block size "
2008 "is smaller than the sector size.\n");
2009 free(r);
2010 return -EINVAL;
2011 }
2012 r->clusters_per_index_block = index_block_size
2013 >> NTFS_BLOCK_SIZE_BITS;
2014 }
2015 memset(&r->reserved, 0, sizeof(r->reserved));
2016 r->index.entries_offset = const_cpu_to_le32(sizeof(INDEX_HEADER));
2017 r->index.index_length = const_cpu_to_le32(sizeof(INDEX_HEADER) +
2018 sizeof(INDEX_ENTRY_HEADER));
2019 r->index.allocated_size = r->index.index_length;
2020 r->index.ih_flags = SMALL_INDEX;
2021 memset(&r->index.reserved, 0, sizeof(r->index.reserved));
2022 e = (INDEX_ENTRY_HEADER*)((u8*)&r->index +
2023 le32_to_cpu(r->index.entries_offset));
2024 /*
2025 * No matter whether this is a file index or a view as this is a
2026 * termination entry, hence no key value / data is associated with it
2027 * at all. Thus, we just need the union to be all zero.
2028 */
2029 e->indexed_file = const_cpu_to_le64(0LL);
2030 e->length = const_cpu_to_le16(sizeof(INDEX_ENTRY_HEADER));
2031 e->key_length = const_cpu_to_le16(0);
2032 e->flags = INDEX_ENTRY_END;
2033 e->reserved = const_cpu_to_le16(0);
2034 err = insert_resident_attr_in_mft_record(m, AT_INDEX_ROOT, name,
2035 name_len, ic, const_cpu_to_le16(0), 0,
2036 (u8*)r, val_len);
2037 free(r);
2038 if (err < 0)
2039 ntfs_log_error("add_attr_index_root failed: %s\n", strerror(-err));
2040 return err;
2041 }
2042
2043 /**
2044 * add_attr_index_alloc
2045 *
2046 * Return 0 on success or -errno on error.
2047 */
add_attr_index_alloc(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const u8 * index_alloc_val,const u32 index_alloc_val_len)2048 static int add_attr_index_alloc(MFT_RECORD *m, const char *name,
2049 const u32 name_len, const IGNORE_CASE_BOOL ic,
2050 const u8 *index_alloc_val, const u32 index_alloc_val_len)
2051 {
2052 int err;
2053
2054 err = insert_non_resident_attr_in_mft_record(m, AT_INDEX_ALLOCATION,
2055 name, name_len, ic, const_cpu_to_le16(0),
2056 index_alloc_val, index_alloc_val_len, WRITE_STANDARD);
2057 if (err < 0)
2058 ntfs_log_error("add_attr_index_alloc failed: %s\n", strerror(-err));
2059 return err;
2060 }
2061
2062 /**
2063 * add_attr_bitmap
2064 *
2065 * Return 0 on success or -errno on error.
2066 */
add_attr_bitmap(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const u8 * bitmap,const u32 bitmap_len)2067 static int add_attr_bitmap(MFT_RECORD *m, const char *name, const u32 name_len,
2068 const IGNORE_CASE_BOOL ic, const u8 *bitmap,
2069 const u32 bitmap_len)
2070 {
2071 int err;
2072
2073 /* Does it fit? NO: create non-resident. YES: create resident. */
2074 if (le32_to_cpu(m->bytes_in_use) + 24 + bitmap_len >
2075 le32_to_cpu(m->bytes_allocated))
2076 err = insert_non_resident_attr_in_mft_record(m, AT_BITMAP, name,
2077 name_len, ic, const_cpu_to_le16(0), bitmap,
2078 bitmap_len, WRITE_STANDARD);
2079 else
2080 err = insert_resident_attr_in_mft_record(m, AT_BITMAP, name,
2081 name_len, ic, const_cpu_to_le16(0), 0,
2082 bitmap, bitmap_len);
2083
2084 if (err < 0)
2085 ntfs_log_error("add_attr_bitmap failed: %s\n", strerror(-err));
2086 return err;
2087 }
2088
2089 /**
2090 * add_attr_bitmap_positioned
2091 *
2092 * Create a non-resident bitmap attribute with a predefined on disk location
2093 * specified by the runlist @rl. The clusters specified by @rl are assumed to
2094 * be allocated already.
2095 *
2096 * Return 0 on success or -errno on error.
2097 */
add_attr_bitmap_positioned(MFT_RECORD * m,const char * name,const u32 name_len,const IGNORE_CASE_BOOL ic,const runlist * rl,const u8 * bitmap,const u32 bitmap_len)2098 static int add_attr_bitmap_positioned(MFT_RECORD *m, const char *name,
2099 const u32 name_len, const IGNORE_CASE_BOOL ic,
2100 const runlist *rl, const u8 *bitmap, const u32 bitmap_len)
2101 {
2102 int err;
2103
2104 err = insert_positioned_attr_in_mft_record(m, AT_BITMAP, name, name_len,
2105 ic, const_cpu_to_le16(0), rl, bitmap, bitmap_len);
2106 if (err < 0)
2107 ntfs_log_error("add_attr_bitmap_positioned failed: %s\n",
2108 strerror(-err));
2109 return err;
2110 }
2111
2112
2113 /**
2114 * upgrade_to_large_index
2115 *
2116 * Create bitmap and index allocation attributes, modify index root
2117 * attribute accordingly and move all of the index entries from the index root
2118 * into the index allocation.
2119 *
2120 * Return 0 on success or -errno on error.
2121 */
upgrade_to_large_index(MFT_RECORD * m,const char * name,u32 name_len,const IGNORE_CASE_BOOL ic,INDEX_ALLOCATION ** idx)2122 static int upgrade_to_large_index(MFT_RECORD *m, const char *name,
2123 u32 name_len, const IGNORE_CASE_BOOL ic,
2124 INDEX_ALLOCATION **idx)
2125 {
2126 ntfs_attr_search_ctx *ctx;
2127 ATTR_RECORD *a;
2128 INDEX_ROOT *r;
2129 INDEX_ENTRY *re;
2130 INDEX_ALLOCATION *ia_val = NULL;
2131 ntfschar *uname = NULL;
2132 int uname_len = 0;
2133 u8 bmp[8];
2134 char *re_start, *re_end;
2135 int i, err, index_block_size;
2136
2137 uname = ntfs_str2ucs(name, &uname_len);
2138 if (!uname)
2139 return -errno;
2140
2141 /* Find the index root attribute. */
2142 ctx = ntfs_attr_get_search_ctx(NULL, m);
2143 if (!ctx) {
2144 ntfs_log_error("Failed to allocate attribute search context.\n");
2145 ntfs_ucsfree(uname);
2146 return -ENOMEM;
2147 }
2148 if (ic == IGNORE_CASE) {
2149 ntfs_log_error("FIXME: Hit unimplemented code path #4.\n");
2150 err = -EOPNOTSUPP;
2151 ntfs_ucsfree(uname);
2152 goto err_out;
2153 }
2154 err = mkntfs_attr_lookup(AT_INDEX_ROOT, uname, uname_len, ic, 0, NULL, 0,
2155 ctx);
2156 ntfs_ucsfree(uname);
2157 if (err) {
2158 err = -ENOTDIR;
2159 goto err_out;
2160 }
2161 a = ctx->attr;
2162 if (a->non_resident || a->flags) {
2163 err = -EINVAL;
2164 goto err_out;
2165 }
2166 r = (INDEX_ROOT*)((char*)a + le16_to_cpu(a->value_offset));
2167 re_end = (char*)r + le32_to_cpu(a->value_length);
2168 re_start = (char*)&r->index + le32_to_cpu(r->index.entries_offset);
2169 re = (INDEX_ENTRY*)re_start;
2170 index_block_size = le32_to_cpu(r->index_block_size);
2171 memset(bmp, 0, sizeof(bmp));
2172 ntfs_bit_set(bmp, 0ULL, 1);
2173 /* Bitmap has to be at least 8 bytes in size. */
2174 err = add_attr_bitmap(m, name, name_len, ic, bmp, sizeof(bmp));
2175 if (err)
2176 goto err_out;
2177 ia_val = ntfs_calloc(index_block_size);
2178 if (!ia_val) {
2179 err = -errno;
2180 goto err_out;
2181 }
2182 /* Setup header. */
2183 ia_val->magic = magic_INDX;
2184 ia_val->usa_ofs = cpu_to_le16(sizeof(INDEX_ALLOCATION));
2185 if (index_block_size >= NTFS_BLOCK_SIZE) {
2186 ia_val->usa_count = cpu_to_le16(index_block_size /
2187 NTFS_BLOCK_SIZE + 1);
2188 } else {
2189 ia_val->usa_count = cpu_to_le16(1);
2190 ntfs_log_error("Sector size is bigger than index block size. "
2191 "Setting usa_count to 1. If Windows chkdsk "
2192 "reports this as corruption, please email %s "
2193 "stating that you saw this message and that "
2194 "the filesystem created was corrupt. "
2195 "Thank you.", NTFS_DEV_LIST);
2196 }
2197 /* Set USN to 1. */
2198 *(le16*)((char*)ia_val + le16_to_cpu(ia_val->usa_ofs)) =
2199 cpu_to_le16(1);
2200 ia_val->lsn = cpu_to_le64(0);
2201 ia_val->index_block_vcn = cpu_to_le64(0);
2202 ia_val->index.ih_flags = LEAF_NODE;
2203 /* Align to 8-byte boundary. */
2204 ia_val->index.entries_offset = cpu_to_le32((sizeof(INDEX_HEADER) +
2205 le16_to_cpu(ia_val->usa_count) * 2 + 7) & ~7);
2206 ia_val->index.allocated_size = cpu_to_le32(index_block_size -
2207 (sizeof(INDEX_ALLOCATION) - sizeof(INDEX_HEADER)));
2208 /* Find the last entry in the index root and save it in re. */
2209 while ((char*)re < re_end && !(re->ie_flags & INDEX_ENTRY_END)) {
2210 /* Next entry in index root. */
2211 re = (INDEX_ENTRY*)((char*)re + le16_to_cpu(re->length));
2212 }
2213 /* Copy all the entries including the termination entry. */
2214 i = (char*)re - re_start + le16_to_cpu(re->length);
2215 memcpy((char*)&ia_val->index +
2216 le32_to_cpu(ia_val->index.entries_offset), re_start, i);
2217 /* Finish setting up index allocation. */
2218 ia_val->index.index_length = cpu_to_le32(i +
2219 le32_to_cpu(ia_val->index.entries_offset));
2220 /* Move the termination entry forward to the beginning if necessary. */
2221 if ((char*)re > re_start) {
2222 memmove(re_start, (char*)re, le16_to_cpu(re->length));
2223 re = (INDEX_ENTRY*)re_start;
2224 }
2225 /* Now fixup empty index root with pointer to index allocation VCN 0. */
2226 r->index.ih_flags = LARGE_INDEX;
2227 re->ie_flags |= INDEX_ENTRY_NODE;
2228 if (le16_to_cpu(re->length) < sizeof(INDEX_ENTRY_HEADER) + sizeof(VCN))
2229 re->length = cpu_to_le16(le16_to_cpu(re->length) + sizeof(VCN));
2230 r->index.index_length = cpu_to_le32(le32_to_cpu(r->index.entries_offset)
2231 + le16_to_cpu(re->length));
2232 r->index.allocated_size = r->index.index_length;
2233 /* Resize index root attribute. */
2234 if (ntfs_resident_attr_value_resize(m, a, sizeof(INDEX_ROOT) -
2235 sizeof(INDEX_HEADER) +
2236 le32_to_cpu(r->index.allocated_size))) {
2237 /* TODO: Remove the added bitmap! */
2238 /* Revert index root from index allocation. */
2239 err = -errno;
2240 goto err_out;
2241 }
2242 /* Set VCN pointer to 0LL. */
2243 *(leVCN*)((char*)re + cpu_to_le16(re->length) - sizeof(VCN)) =
2244 cpu_to_le64(0);
2245 err = ntfs_mst_pre_write_fixup((NTFS_RECORD*)ia_val, index_block_size);
2246 if (err) {
2247 err = -errno;
2248 ntfs_log_error("ntfs_mst_pre_write_fixup() failed in "
2249 "upgrade_to_large_index.\n");
2250 goto err_out;
2251 }
2252 err = add_attr_index_alloc(m, name, name_len, ic, (u8*)ia_val,
2253 index_block_size);
2254 ntfs_mst_post_write_fixup((NTFS_RECORD*)ia_val);
2255 if (err) {
2256 /* TODO: Remove the added bitmap! */
2257 /* Revert index root from index allocation. */
2258 goto err_out;
2259 }
2260 *idx = ia_val;
2261 ntfs_attr_put_search_ctx(ctx);
2262 return 0;
2263 err_out:
2264 ntfs_attr_put_search_ctx(ctx);
2265 free(ia_val);
2266 return err;
2267 }
2268
2269 /**
2270 * make_room_for_index_entry_in_index_block
2271 *
2272 * Create space of @size bytes at position @pos inside the index block @idx.
2273 *
2274 * Return 0 on success or -errno on error.
2275 */
make_room_for_index_entry_in_index_block(INDEX_BLOCK * idx,INDEX_ENTRY * pos,u32 size)2276 static int make_room_for_index_entry_in_index_block(INDEX_BLOCK *idx,
2277 INDEX_ENTRY *pos, u32 size)
2278 {
2279 u32 biu;
2280
2281 if (!size)
2282 return 0;
2283 #ifdef DEBUG
2284 /*
2285 * Rigorous consistency checks. Always return -EINVAL even if more
2286 * appropriate codes exist for simplicity of parsing the return value.
2287 */
2288 if (size != ((size + 7) & ~7)) {
2289 ntfs_log_error("make_room_for_index_entry_in_index_block() received "
2290 "non 8-byte aligned size.\n");
2291 return -EINVAL;
2292 }
2293 if (!idx || !pos)
2294 return -EINVAL;
2295 if ((char*)pos < (char*)idx || (char*)pos + size < (char*)idx ||
2296 (char*)pos > (char*)idx + sizeof(INDEX_BLOCK) -
2297 sizeof(INDEX_HEADER) +
2298 le32_to_cpu(idx->index.allocated_size) ||
2299 (char*)pos + size > (char*)idx + sizeof(INDEX_BLOCK) -
2300 sizeof(INDEX_HEADER) +
2301 le32_to_cpu(idx->index.allocated_size))
2302 return -EINVAL;
2303 /* The - sizeof(INDEX_ENTRY_HEADER) is for the index terminator. */
2304 if ((char*)pos - (char*)&idx->index >
2305 (int)le32_to_cpu(idx->index.index_length)
2306 - (int)sizeof(INDEX_ENTRY_HEADER))
2307 return -EINVAL;
2308 #endif
2309 biu = le32_to_cpu(idx->index.index_length);
2310 /* Do we have enough space? */
2311 if (biu + size > le32_to_cpu(idx->index.allocated_size))
2312 return -ENOSPC;
2313 /* Move everything after pos to pos + size. */
2314 memmove((char*)pos + size, (char*)pos, biu - ((char*)pos -
2315 (char*)&idx->index));
2316 /* Update index block. */
2317 idx->index.index_length = cpu_to_le32(biu + size);
2318 return 0;
2319 }
2320
2321 /**
2322 * ntfs_index_keys_compare
2323 *
2324 * not all types of COLLATION_RULES supported yet...
2325 * added as needed.. (remove this comment when all are added)
2326 */
ntfs_index_keys_compare(u8 * key1,u8 * key2,int key1_length,int key2_length,COLLATION_RULES collation_rule)2327 static int ntfs_index_keys_compare(u8 *key1, u8 *key2, int key1_length,
2328 int key2_length, COLLATION_RULES collation_rule)
2329 {
2330 u32 u1, u2;
2331 int i;
2332
2333 if (collation_rule == COLLATION_NTOFS_ULONG) {
2334 /* i.e. $SII or $QUOTA-$Q */
2335 u1 = le32_to_cpup((const le32*)key1);
2336 u2 = le32_to_cpup((const le32*)key2);
2337 if (u1 < u2)
2338 return -1;
2339 if (u1 > u2)
2340 return 1;
2341 /* u1 == u2 */
2342 return 0;
2343 }
2344 if (collation_rule == COLLATION_NTOFS_ULONGS) {
2345 /* i.e $OBJID-$O */
2346 i = 0;
2347 while (i < min(key1_length, key2_length)) {
2348 u1 = le32_to_cpup((const le32*)(key1 + i));
2349 u2 = le32_to_cpup((const le32*)(key2 + i));
2350 if (u1 < u2)
2351 return -1;
2352 if (u1 > u2)
2353 return 1;
2354 /* u1 == u2 */
2355 i += sizeof(u32);
2356 }
2357 if (key1_length < key2_length)
2358 return -1;
2359 if (key1_length > key2_length)
2360 return 1;
2361 return 0;
2362 }
2363 if (collation_rule == COLLATION_NTOFS_SECURITY_HASH) {
2364 /* i.e. $SDH */
2365 u1 = le32_to_cpu(((SDH_INDEX_KEY*)key1)->hash);
2366 u2 = le32_to_cpu(((SDH_INDEX_KEY*)key2)->hash);
2367 if (u1 < u2)
2368 return -1;
2369 if (u1 > u2)
2370 return 1;
2371 /* u1 == u2 */
2372 u1 = le32_to_cpu(((SDH_INDEX_KEY*)key1)->security_id);
2373 u2 = le32_to_cpu(((SDH_INDEX_KEY*)key2)->security_id);
2374 if (u1 < u2)
2375 return -1;
2376 if (u1 > u2)
2377 return 1;
2378 return 0;
2379 }
2380 if (collation_rule == COLLATION_NTOFS_SID) {
2381 /* i.e. $QUOTA-O */
2382 i = memcmp(key1, key2, min(key1_length, key2_length));
2383 if (!i) {
2384 if (key1_length < key2_length)
2385 return -1;
2386 if (key1_length > key2_length)
2387 return 1;
2388 }
2389 return i;
2390 }
2391 ntfs_log_critical("ntfs_index_keys_compare called without supported "
2392 "collation rule.\n");
2393 return 0; /* Claim they're equal. What else can we do? */
2394 }
2395
2396 /**
2397 * insert_index_entry_in_res_dir_index
2398 *
2399 * i.e. insert an index_entry in some named index_root
2400 * simplified search method, works for mkntfs
2401 */
insert_index_entry_in_res_dir_index(INDEX_ENTRY * idx,u32 idx_size,MFT_RECORD * m,ntfschar * name,u32 name_size,ATTR_TYPES type)2402 static int insert_index_entry_in_res_dir_index(INDEX_ENTRY *idx, u32 idx_size,
2403 MFT_RECORD *m, ntfschar *name, u32 name_size, ATTR_TYPES type)
2404 {
2405 ntfs_attr_search_ctx *ctx;
2406 INDEX_HEADER *idx_header;
2407 INDEX_ENTRY *idx_entry, *idx_end;
2408 ATTR_RECORD *a;
2409 COLLATION_RULES collation_rule;
2410 int err, i;
2411
2412 err = 0;
2413 /* does it fit ?*/
2414 if (g_vol->mft_record_size > idx_size + le32_to_cpu(m->bytes_allocated))
2415 return -ENOSPC;
2416 /* find the INDEX_ROOT attribute:*/
2417 ctx = ntfs_attr_get_search_ctx(NULL, m);
2418 if (!ctx) {
2419 ntfs_log_error("Failed to allocate attribute search "
2420 "context.\n");
2421 err = -ENOMEM;
2422 goto err_out;
2423 }
2424 if (mkntfs_attr_lookup(AT_INDEX_ROOT, name, name_size,
2425 CASE_SENSITIVE, 0, NULL, 0, ctx)) {
2426 err = -EEXIST;
2427 goto err_out;
2428 }
2429 /* found attribute */
2430 a = (ATTR_RECORD*)ctx->attr;
2431 collation_rule = ((INDEX_ROOT*)((u8*)a +
2432 le16_to_cpu(a->value_offset)))->collation_rule;
2433 idx_header = (INDEX_HEADER*)((u8*)a + le16_to_cpu(a->value_offset)
2434 + 0x10);
2435 idx_entry = (INDEX_ENTRY*)((u8*)idx_header +
2436 le32_to_cpu(idx_header->entries_offset));
2437 idx_end = (INDEX_ENTRY*)((u8*)idx_entry +
2438 le32_to_cpu(idx_header->index_length));
2439 /*
2440 * Loop until we exceed valid memory (corruption case) or until we
2441 * reach the last entry.
2442 */
2443 if (type == AT_FILE_NAME) {
2444 while (((u8*)idx_entry < (u8*)idx_end) &&
2445 !(idx_entry->ie_flags & INDEX_ENTRY_END)) {
2446 /*
2447 i = ntfs_file_values_compare(&idx->key.file_name,
2448 &idx_entry->key.file_name, 1,
2449 IGNORE_CASE, g_vol->upcase,
2450 g_vol->upcase_len);
2451 */
2452 i = ntfs_names_full_collate(idx->key.file_name.file_name, idx->key.file_name.file_name_length,
2453 idx_entry->key.file_name.file_name, idx_entry->key.file_name.file_name_length,
2454 IGNORE_CASE, g_vol->upcase,
2455 g_vol->upcase_len);
2456 /*
2457 * If @file_name collates before ie->key.file_name,
2458 * there is no matching index entry.
2459 */
2460 if (i == -1)
2461 break;
2462 /* If file names are not equal, continue search. */
2463 if (i)
2464 goto do_next;
2465 if (idx->key.file_name.file_name_type !=
2466 FILE_NAME_POSIX ||
2467 idx_entry->key.file_name.file_name_type
2468 != FILE_NAME_POSIX)
2469 return -EEXIST;
2470 /*
2471 i = ntfs_file_values_compare(&idx->key.file_name,
2472 &idx_entry->key.file_name, 1,
2473 CASE_SENSITIVE, g_vol->upcase,
2474 g_vol->upcase_len);
2475 */
2476 i = ntfs_names_full_collate(idx->key.file_name.file_name, idx->key.file_name.file_name_length,
2477 idx_entry->key.file_name.file_name, idx_entry->key.file_name.file_name_length,
2478 CASE_SENSITIVE, g_vol->upcase,
2479 g_vol->upcase_len);
2480 if (!i)
2481 return -EEXIST;
2482 if (i == -1)
2483 break;
2484 do_next:
2485 idx_entry = (INDEX_ENTRY*)((u8*)idx_entry +
2486 le16_to_cpu(idx_entry->length));
2487 }
2488 } else if (type == AT_UNUSED) { /* case view */
2489 while (((u8*)idx_entry < (u8*)idx_end) &&
2490 !(idx_entry->ie_flags & INDEX_ENTRY_END)) {
2491 i = ntfs_index_keys_compare((u8*)idx + 0x10,
2492 (u8*)idx_entry + 0x10,
2493 le16_to_cpu(idx->key_length),
2494 le16_to_cpu(idx_entry->key_length),
2495 collation_rule);
2496 if (!i)
2497 return -EEXIST;
2498 if (i == -1)
2499 break;
2500 idx_entry = (INDEX_ENTRY*)((u8*)idx_entry +
2501 le16_to_cpu(idx_entry->length));
2502 }
2503 } else
2504 return -EINVAL;
2505 memmove((u8*)idx_entry + idx_size, (u8*)idx_entry,
2506 le32_to_cpu(m->bytes_in_use) -
2507 ((u8*)idx_entry - (u8*)m));
2508 memcpy((u8*)idx_entry, (u8*)idx, idx_size);
2509 /* Adjust various offsets, etc... */
2510 m->bytes_in_use = cpu_to_le32(le32_to_cpu(m->bytes_in_use) + idx_size);
2511 a->length = cpu_to_le32(le32_to_cpu(a->length) + idx_size);
2512 a->value_length = cpu_to_le32(le32_to_cpu(a->value_length) + idx_size);
2513 idx_header->index_length = cpu_to_le32(
2514 le32_to_cpu(idx_header->index_length) + idx_size);
2515 idx_header->allocated_size = cpu_to_le32(
2516 le32_to_cpu(idx_header->allocated_size) + idx_size);
2517 err_out:
2518 if (ctx)
2519 ntfs_attr_put_search_ctx(ctx);
2520 return err;
2521 }
2522
2523 /**
2524 * initialize_secure
2525 *
2526 * initializes $Secure's $SDH and $SII indexes from $SDS datastream
2527 */
initialize_secure(char * sds,u32 sds_size,MFT_RECORD * m)2528 static int initialize_secure(char *sds, u32 sds_size, MFT_RECORD *m)
2529 {
2530 int err, sdh_size, sii_size;
2531 SECURITY_DESCRIPTOR_HEADER *sds_header;
2532 INDEX_ENTRY *idx_entry_sdh, *idx_entry_sii;
2533 SDH_INDEX_DATA *sdh_data;
2534 SII_INDEX_DATA *sii_data;
2535
2536 sds_header = (SECURITY_DESCRIPTOR_HEADER*)sds;
2537 sdh_size = sizeof(INDEX_ENTRY_HEADER);
2538 sdh_size += sizeof(SDH_INDEX_KEY) + sizeof(SDH_INDEX_DATA);
2539 sii_size = sizeof(INDEX_ENTRY_HEADER);
2540 sii_size += sizeof(SII_INDEX_KEY) + sizeof(SII_INDEX_DATA);
2541 idx_entry_sdh = ntfs_calloc(sizeof(INDEX_ENTRY));
2542 if (!idx_entry_sdh)
2543 return -errno;
2544 idx_entry_sii = ntfs_calloc(sizeof(INDEX_ENTRY));
2545 if (!idx_entry_sii) {
2546 free(idx_entry_sdh);
2547 return -errno;
2548 }
2549 err = 0;
2550
2551 while ((char*)sds_header < (char*)sds + sds_size) {
2552 if (!sds_header->length)
2553 break;
2554 /* SDH index entry */
2555 idx_entry_sdh->data_offset = const_cpu_to_le16(0x18);
2556 idx_entry_sdh->data_length = const_cpu_to_le16(0x14);
2557 idx_entry_sdh->reservedV = const_cpu_to_le32(0x00);
2558 idx_entry_sdh->length = const_cpu_to_le16(0x30);
2559 idx_entry_sdh->key_length = const_cpu_to_le16(0x08);
2560 idx_entry_sdh->ie_flags = const_cpu_to_le16(0x00);
2561 idx_entry_sdh->reserved = const_cpu_to_le16(0x00);
2562 idx_entry_sdh->key.sdh.hash = sds_header->hash;
2563 idx_entry_sdh->key.sdh.security_id = sds_header->security_id;
2564 sdh_data = (SDH_INDEX_DATA*)((u8*)idx_entry_sdh +
2565 le16_to_cpu(idx_entry_sdh->data_offset));
2566 sdh_data->hash = sds_header->hash;
2567 sdh_data->security_id = sds_header->security_id;
2568 sdh_data->offset = sds_header->offset;
2569 sdh_data->length = sds_header->length;
2570 sdh_data->reserved_II = const_cpu_to_le32(0x00490049);
2571
2572 /* SII index entry */
2573 idx_entry_sii->data_offset = const_cpu_to_le16(0x14);
2574 idx_entry_sii->data_length = const_cpu_to_le16(0x14);
2575 idx_entry_sii->reservedV = const_cpu_to_le32(0x00);
2576 idx_entry_sii->length = const_cpu_to_le16(0x28);
2577 idx_entry_sii->key_length = const_cpu_to_le16(0x04);
2578 idx_entry_sii->ie_flags = const_cpu_to_le16(0x00);
2579 idx_entry_sii->reserved = const_cpu_to_le16(0x00);
2580 idx_entry_sii->key.sii.security_id = sds_header->security_id;
2581 sii_data = (SII_INDEX_DATA*)((u8*)idx_entry_sii +
2582 le16_to_cpu(idx_entry_sii->data_offset));
2583 sii_data->hash = sds_header->hash;
2584 sii_data->security_id = sds_header->security_id;
2585 sii_data->offset = sds_header->offset;
2586 sii_data->length = sds_header->length;
2587 if ((err = insert_index_entry_in_res_dir_index(idx_entry_sdh,
2588 sdh_size, m, NTFS_INDEX_SDH, 4, AT_UNUSED)))
2589 break;
2590 if ((err = insert_index_entry_in_res_dir_index(idx_entry_sii,
2591 sii_size, m, NTFS_INDEX_SII, 4, AT_UNUSED)))
2592 break;
2593 sds_header = (SECURITY_DESCRIPTOR_HEADER*)((u8*)sds_header +
2594 ((le32_to_cpu(sds_header->length) + 15) & ~15));
2595 }
2596 free(idx_entry_sdh);
2597 free(idx_entry_sii);
2598 return err;
2599 }
2600
2601 /**
2602 * initialize_quota
2603 *
2604 * initialize $Quota with the default quota index-entries.
2605 */
initialize_quota(MFT_RECORD * m)2606 static int initialize_quota(MFT_RECORD *m)
2607 {
2608 int o_size, q1_size, q2_size, err, i;
2609 INDEX_ENTRY *idx_entry_o, *idx_entry_q1, *idx_entry_q2;
2610 QUOTA_O_INDEX_DATA *idx_entry_o_data;
2611 QUOTA_CONTROL_ENTRY *idx_entry_q1_data, *idx_entry_q2_data;
2612
2613 err = 0;
2614 /* q index entry num 1 */
2615 q1_size = 0x48;
2616 idx_entry_q1 = ntfs_calloc(q1_size);
2617 if (!idx_entry_q1)
2618 return errno;
2619 idx_entry_q1->data_offset = const_cpu_to_le16(0x14);
2620 idx_entry_q1->data_length = const_cpu_to_le16(0x30);
2621 idx_entry_q1->reservedV = const_cpu_to_le32(0x00);
2622 idx_entry_q1->length = const_cpu_to_le16(0x48);
2623 idx_entry_q1->key_length = const_cpu_to_le16(0x04);
2624 idx_entry_q1->ie_flags = const_cpu_to_le16(0x00);
2625 idx_entry_q1->reserved = const_cpu_to_le16(0x00);
2626 idx_entry_q1->key.owner_id = const_cpu_to_le32(0x01);
2627 idx_entry_q1_data = (QUOTA_CONTROL_ENTRY*)((char*)idx_entry_q1
2628 + le16_to_cpu(idx_entry_q1->data_offset));
2629 idx_entry_q1_data->version = const_cpu_to_le32(0x02);
2630 idx_entry_q1_data->flags = QUOTA_FLAG_DEFAULT_LIMITS;
2631 idx_entry_q1_data->bytes_used = const_cpu_to_le64(0x00);
2632 idx_entry_q1_data->change_time = mkntfs_time();
2633 idx_entry_q1_data->threshold = cpu_to_sle64(-1);
2634 idx_entry_q1_data->limit = cpu_to_sle64(-1);
2635 idx_entry_q1_data->exceeded_time = const_cpu_to_le64(0);
2636 err = insert_index_entry_in_res_dir_index(idx_entry_q1, q1_size, m,
2637 NTFS_INDEX_Q, 2, AT_UNUSED);
2638 free(idx_entry_q1);
2639 if (err)
2640 return err;
2641 /* q index entry num 2 */
2642 q2_size = 0x58;
2643 idx_entry_q2 = ntfs_calloc(q2_size);
2644 if (!idx_entry_q2)
2645 return errno;
2646 idx_entry_q2->data_offset = const_cpu_to_le16(0x14);
2647 idx_entry_q2->data_length = const_cpu_to_le16(0x40);
2648 idx_entry_q2->reservedV = const_cpu_to_le32(0x00);
2649 idx_entry_q2->length = const_cpu_to_le16(0x58);
2650 idx_entry_q2->key_length = const_cpu_to_le16(0x04);
2651 idx_entry_q2->ie_flags = const_cpu_to_le16(0x00);
2652 idx_entry_q2->reserved = const_cpu_to_le16(0x00);
2653 idx_entry_q2->key.owner_id = QUOTA_FIRST_USER_ID;
2654 idx_entry_q2_data = (QUOTA_CONTROL_ENTRY*)((char*)idx_entry_q2
2655 + le16_to_cpu(idx_entry_q2->data_offset));
2656 idx_entry_q2_data->version = const_cpu_to_le32(0x02);
2657 idx_entry_q2_data->flags = QUOTA_FLAG_DEFAULT_LIMITS;
2658 idx_entry_q2_data->bytes_used = const_cpu_to_le64(0x00);
2659 idx_entry_q2_data->change_time = mkntfs_time();
2660 idx_entry_q2_data->threshold = cpu_to_sle64(-1);
2661 idx_entry_q2_data->limit = cpu_to_sle64(-1);
2662 idx_entry_q2_data->exceeded_time = const_cpu_to_le64(0);
2663 idx_entry_q2_data->sid.revision = 1;
2664 idx_entry_q2_data->sid.sub_authority_count = 2;
2665 for (i = 0; i < 5; i++)
2666 idx_entry_q2_data->sid.identifier_authority.value[i] = 0;
2667 idx_entry_q2_data->sid.identifier_authority.value[5] = 0x05;
2668 idx_entry_q2_data->sid.sub_authority[0] =
2669 const_cpu_to_le32(SECURITY_BUILTIN_DOMAIN_RID);
2670 idx_entry_q2_data->sid.sub_authority[1] =
2671 const_cpu_to_le32(DOMAIN_ALIAS_RID_ADMINS);
2672 err = insert_index_entry_in_res_dir_index(idx_entry_q2, q2_size, m,
2673 NTFS_INDEX_Q, 2, AT_UNUSED);
2674 free(idx_entry_q2);
2675 if (err)
2676 return err;
2677 o_size = 0x28;
2678 idx_entry_o = ntfs_calloc(o_size);
2679 if (!idx_entry_o)
2680 return errno;
2681 idx_entry_o->data_offset = const_cpu_to_le16(0x20);
2682 idx_entry_o->data_length = const_cpu_to_le16(0x04);
2683 idx_entry_o->reservedV = const_cpu_to_le32(0x00);
2684 idx_entry_o->length = const_cpu_to_le16(0x28);
2685 idx_entry_o->key_length = const_cpu_to_le16(0x10);
2686 idx_entry_o->ie_flags = const_cpu_to_le16(0x00);
2687 idx_entry_o->reserved = const_cpu_to_le16(0x00);
2688 idx_entry_o->key.sid.revision = 0x01;
2689 idx_entry_o->key.sid.sub_authority_count = 0x02;
2690 for (i = 0; i < 5; i++)
2691 idx_entry_o->key.sid.identifier_authority.value[i] = 0;
2692 idx_entry_o->key.sid.identifier_authority.value[5] = 0x05;
2693 idx_entry_o->key.sid.sub_authority[0] =
2694 const_cpu_to_le32(SECURITY_BUILTIN_DOMAIN_RID);
2695 idx_entry_o->key.sid.sub_authority[1] =
2696 const_cpu_to_le32(DOMAIN_ALIAS_RID_ADMINS);
2697 idx_entry_o_data = (QUOTA_O_INDEX_DATA*)((char*)idx_entry_o
2698 + le16_to_cpu(idx_entry_o->data_offset));
2699 idx_entry_o_data->owner_id = QUOTA_FIRST_USER_ID;
2700 /* 20 00 00 00 padding after here on ntfs 3.1. 3.0 is unchecked. */
2701 idx_entry_o_data->unknown = const_cpu_to_le32(32);
2702 err = insert_index_entry_in_res_dir_index(idx_entry_o, o_size, m,
2703 NTFS_INDEX_O, 2, AT_UNUSED);
2704 free(idx_entry_o);
2705
2706 return err;
2707 }
2708
2709 /**
2710 * insert_file_link_in_dir_index
2711 *
2712 * Insert the fully completed FILE_NAME_ATTR @file_name which is inside
2713 * the file with mft reference @file_ref into the index (allocation) block
2714 * @idx (which belongs to @file_ref's parent directory).
2715 *
2716 * Return 0 on success or -errno on error.
2717 */
insert_file_link_in_dir_index(INDEX_BLOCK * idx,leMFT_REF file_ref,FILE_NAME_ATTR * file_name,u32 file_name_size)2718 static int insert_file_link_in_dir_index(INDEX_BLOCK *idx, leMFT_REF file_ref,
2719 FILE_NAME_ATTR *file_name, u32 file_name_size)
2720 {
2721 int err, i;
2722 INDEX_ENTRY *ie;
2723 char *index_end;
2724
2725 /*
2726 * Lookup dir entry @file_name in dir @idx to determine correct
2727 * insertion location. FIXME: Using a very oversimplified lookup
2728 * method which is sufficient for mkntfs but no good whatsoever in
2729 * real world scenario. (AIA)
2730 */
2731
2732 index_end = (char*)&idx->index + le32_to_cpu(idx->index.index_length);
2733 ie = (INDEX_ENTRY*)((char*)&idx->index +
2734 le32_to_cpu(idx->index.entries_offset));
2735 /*
2736 * Loop until we exceed valid memory (corruption case) or until we
2737 * reach the last entry.
2738 */
2739 while ((char*)ie < index_end && !(ie->ie_flags & INDEX_ENTRY_END)) {
2740 #if 0
2741 #ifdef DEBUG
2742 ntfs_log_debug("file_name_attr1->file_name_length = %i\n",
2743 file_name->file_name_length);
2744 if (file_name->file_name_length) {
2745 char *__buf = NULL;
2746 i = ntfs_ucstombs((ntfschar*)&file_name->file_name,
2747 file_name->file_name_length, &__buf, 0);
2748 if (i < 0)
2749 ntfs_log_debug("Name contains non-displayable "
2750 "Unicode characters.\n");
2751 ntfs_log_debug("file_name_attr1->file_name = %s\n",
2752 __buf);
2753 free(__buf);
2754 }
2755 ntfs_log_debug("file_name_attr2->file_name_length = %i\n",
2756 ie->key.file_name.file_name_length);
2757 if (ie->key.file_name.file_name_length) {
2758 char *__buf = NULL;
2759 i = ntfs_ucstombs(ie->key.file_name.file_name,
2760 ie->key.file_name.file_name_length + 1, &__buf,
2761 0);
2762 if (i < 0)
2763 ntfs_log_debug("Name contains non-displayable "
2764 "Unicode characters.\n");
2765 ntfs_log_debug("file_name_attr2->file_name = %s\n",
2766 __buf);
2767 free(__buf);
2768 }
2769 #endif
2770 #endif
2771 /*
2772 i = ntfs_file_values_compare(file_name,
2773 (FILE_NAME_ATTR*)&ie->key.file_name, 1,
2774 IGNORE_CASE, g_vol->upcase, g_vol->upcase_len);
2775 */
2776 i = ntfs_names_full_collate(file_name->file_name, file_name->file_name_length,
2777 ((FILE_NAME_ATTR*)&ie->key.file_name)->file_name, ((FILE_NAME_ATTR*)&ie->key.file_name)->file_name_length,
2778 IGNORE_CASE, g_vol->upcase, g_vol->upcase_len);
2779 /*
2780 * If @file_name collates before ie->key.file_name, there is no
2781 * matching index entry.
2782 */
2783 if (i == -1)
2784 break;
2785 /* If file names are not equal, continue search. */
2786 if (i)
2787 goto do_next;
2788 /* File names are equal when compared ignoring case. */
2789 /*
2790 * If BOTH file names are in the POSIX namespace, do a case
2791 * sensitive comparison as well. Otherwise the names match so
2792 * we return -EEXIST. FIXME: There are problems with this in a
2793 * real world scenario, when one is POSIX and one isn't, but
2794 * fine for mkntfs where we don't use POSIX namespace at all
2795 * and hence this following code is luxury. (AIA)
2796 */
2797 if (file_name->file_name_type != FILE_NAME_POSIX ||
2798 ie->key.file_name.file_name_type != FILE_NAME_POSIX)
2799 return -EEXIST;
2800 /*
2801 i = ntfs_file_values_compare(file_name,
2802 (FILE_NAME_ATTR*)&ie->key.file_name, 1,
2803 CASE_SENSITIVE, g_vol->upcase,
2804 g_vol->upcase_len);
2805 */
2806 i = ntfs_names_full_collate(file_name->file_name, file_name->file_name_length,
2807 ((FILE_NAME_ATTR*)&ie->key.file_name)->file_name, ((FILE_NAME_ATTR*)&ie->key.file_name)->file_name_length,
2808 CASE_SENSITIVE, g_vol->upcase, g_vol->upcase_len);
2809 if (i == -1)
2810 break;
2811 /* Complete match. Bugger. Can't insert. */
2812 if (!i)
2813 return -EEXIST;
2814 do_next:
2815 #ifdef DEBUG
2816 /* Next entry. */
2817 if (!ie->length) {
2818 ntfs_log_debug("BUG: ie->length is zero, breaking out "
2819 "of loop.\n");
2820 break;
2821 }
2822 #endif
2823 ie = (INDEX_ENTRY*)((char*)ie + le16_to_cpu(ie->length));
2824 };
2825 i = (sizeof(INDEX_ENTRY_HEADER) + file_name_size + 7) & ~7;
2826 err = make_room_for_index_entry_in_index_block(idx, ie, i);
2827 if (err) {
2828 ntfs_log_error("make_room_for_index_entry_in_index_block "
2829 "failed: %s\n", strerror(-err));
2830 return err;
2831 }
2832 /* Create entry in place and copy file name attribute value. */
2833 ie->indexed_file = file_ref;
2834 ie->length = cpu_to_le16(i);
2835 ie->key_length = cpu_to_le16(file_name_size);
2836 ie->ie_flags = cpu_to_le16(0);
2837 ie->reserved = cpu_to_le16(0);
2838 memcpy((char*)&ie->key.file_name, (char*)file_name, file_name_size);
2839 return 0;
2840 }
2841
2842 /**
2843 * create_hardlink_res
2844 *
2845 * Create a file_name_attribute in the mft record @m_file which points to the
2846 * parent directory with mft reference @ref_parent.
2847 *
2848 * Then, insert an index entry with this file_name_attribute in the index
2849 * root @idx of the index_root attribute of the parent directory.
2850 *
2851 * @ref_file is the mft reference of @m_file.
2852 *
2853 * Return 0 on success or -errno on error.
2854 */
create_hardlink_res(MFT_RECORD * m_parent,const leMFT_REF ref_parent,MFT_RECORD * m_file,const leMFT_REF ref_file,const s64 allocated_size,const s64 data_size,const FILE_ATTR_FLAGS flags,const u16 packed_ea_size,const u32 reparse_point_tag,const char * file_name,const FILE_NAME_TYPE_FLAGS file_name_type)2855 static int create_hardlink_res(MFT_RECORD *m_parent, const leMFT_REF ref_parent,
2856 MFT_RECORD *m_file, const leMFT_REF ref_file,
2857 const s64 allocated_size, const s64 data_size,
2858 const FILE_ATTR_FLAGS flags, const u16 packed_ea_size,
2859 const u32 reparse_point_tag, const char *file_name,
2860 const FILE_NAME_TYPE_FLAGS file_name_type)
2861 {
2862 FILE_NAME_ATTR *fn;
2863 int i, fn_size, idx_size;
2864 INDEX_ENTRY *idx_entry_new;
2865 ntfschar *uname;
2866
2867 /* Create the file_name attribute. */
2868 i = (strlen(file_name) + 1) * sizeof(ntfschar);
2869 fn_size = sizeof(FILE_NAME_ATTR) + i;
2870 fn = ntfs_malloc(fn_size);
2871 if (!fn)
2872 return -errno;
2873 fn->parent_directory = ref_parent;
2874 fn->creation_time = stdinfo_time(m_file);
2875 fn->last_data_change_time = fn->creation_time;
2876 fn->last_mft_change_time = fn->creation_time;
2877 fn->last_access_time = fn->creation_time;
2878 fn->allocated_size = cpu_to_sle64(allocated_size);
2879 fn->data_size = cpu_to_sle64(data_size);
2880 fn->file_attributes = flags;
2881 /* These are in a union so can't have both. */
2882 if (packed_ea_size && reparse_point_tag) {
2883 free(fn);
2884 return -EINVAL;
2885 }
2886 if (packed_ea_size) {
2887 free(fn);
2888 return -EINVAL;
2889 }
2890 if (packed_ea_size) {
2891 fn->packed_ea_size = cpu_to_le16(packed_ea_size);
2892 fn->reserved = cpu_to_le16(0);
2893 } else {
2894 fn->reparse_point_tag = cpu_to_le32(reparse_point_tag);
2895 }
2896 fn->file_name_type = file_name_type;
2897 uname = fn->file_name;
2898 i = ntfs_mbstoucs_libntfscompat(file_name, &uname, i);
2899 if (i < 1) {
2900 free(fn);
2901 return -EINVAL;
2902 }
2903 if (i > 0xff) {
2904 free(fn);
2905 return -ENAMETOOLONG;
2906 }
2907 /* No terminating null in file names. */
2908 fn->file_name_length = i;
2909 fn_size = sizeof(FILE_NAME_ATTR) + i * sizeof(ntfschar);
2910 /* Increment the link count of @m_file. */
2911 i = le16_to_cpu(m_file->link_count);
2912 if (i == 0xffff) {
2913 ntfs_log_error("Too many hardlinks present already.\n");
2914 free(fn);
2915 return -EINVAL;
2916 }
2917 m_file->link_count = cpu_to_le16(i + 1);
2918 /* Add the file_name to @m_file. */
2919 i = insert_resident_attr_in_mft_record(m_file, AT_FILE_NAME, NULL, 0,
2920 CASE_SENSITIVE, const_cpu_to_le16(0),
2921 RESIDENT_ATTR_IS_INDEXED, (u8*)fn, fn_size);
2922 if (i < 0) {
2923 ntfs_log_error("create_hardlink failed adding file name "
2924 "attribute: %s\n", strerror(-i));
2925 free(fn);
2926 /* Undo link count increment. */
2927 m_file->link_count = cpu_to_le16(
2928 le16_to_cpu(m_file->link_count) - 1);
2929 return i;
2930 }
2931 /* Insert the index entry for file_name in @idx. */
2932 idx_size = (fn_size + 7) & ~7;
2933 idx_entry_new = ntfs_calloc(idx_size + 0x10);
2934 if (!idx_entry_new)
2935 return -errno;
2936 idx_entry_new->indexed_file = ref_file;
2937 idx_entry_new->length = cpu_to_le16(idx_size + 0x10);
2938 idx_entry_new->key_length = cpu_to_le16(fn_size);
2939 memcpy((u8*)idx_entry_new + 0x10, (u8*)fn, fn_size);
2940 i = insert_index_entry_in_res_dir_index(idx_entry_new, idx_size + 0x10,
2941 m_parent, NTFS_INDEX_I30, 4, AT_FILE_NAME);
2942 if (i < 0) {
2943 ntfs_log_error("create_hardlink failed inserting index entry: "
2944 "%s\n", strerror(-i));
2945 /* FIXME: Remove the file name attribute from @m_file. */
2946 free(idx_entry_new);
2947 free(fn);
2948 /* Undo link count increment. */
2949 m_file->link_count = cpu_to_le16(
2950 le16_to_cpu(m_file->link_count) - 1);
2951 return i;
2952 }
2953 free(idx_entry_new);
2954 free(fn);
2955 return 0;
2956 }
2957
2958 /**
2959 * create_hardlink
2960 *
2961 * Create a file_name_attribute in the mft record @m_file which points to the
2962 * parent directory with mft reference @ref_parent.
2963 *
2964 * Then, insert an index entry with this file_name_attribute in the index
2965 * block @idx of the index allocation attribute of the parent directory.
2966 *
2967 * @ref_file is the mft reference of @m_file.
2968 *
2969 * Return 0 on success or -errno on error.
2970 */
create_hardlink(INDEX_BLOCK * idx,const leMFT_REF ref_parent,MFT_RECORD * m_file,const leMFT_REF ref_file,const s64 allocated_size,const s64 data_size,const FILE_ATTR_FLAGS flags,const u16 packed_ea_size,const u32 reparse_point_tag,const char * file_name,const FILE_NAME_TYPE_FLAGS file_name_type)2971 static int create_hardlink(INDEX_BLOCK *idx, const leMFT_REF ref_parent,
2972 MFT_RECORD *m_file, const leMFT_REF ref_file,
2973 const s64 allocated_size, const s64 data_size,
2974 const FILE_ATTR_FLAGS flags, const u16 packed_ea_size,
2975 const u32 reparse_point_tag, const char *file_name,
2976 const FILE_NAME_TYPE_FLAGS file_name_type)
2977 {
2978 FILE_NAME_ATTR *fn;
2979 int i, fn_size;
2980 ntfschar *uname;
2981
2982 /* Create the file_name attribute. */
2983 i = (strlen(file_name) + 1) * sizeof(ntfschar);
2984 fn_size = sizeof(FILE_NAME_ATTR) + i;
2985 fn = ntfs_malloc(fn_size);
2986 if (!fn)
2987 return -errno;
2988 fn->parent_directory = ref_parent;
2989 fn->creation_time = stdinfo_time(m_file);
2990 fn->last_data_change_time = fn->creation_time;
2991 fn->last_mft_change_time = fn->creation_time;
2992 fn->last_access_time = fn->creation_time;
2993 /* allocated size depends on unnamed data being resident */
2994 if (allocated_size && non_resident_unnamed_data(m_file))
2995 fn->allocated_size = cpu_to_sle64(allocated_size);
2996 else
2997 fn->allocated_size = cpu_to_sle64((data_size + 7) & -8);
2998 fn->data_size = cpu_to_sle64(data_size);
2999 fn->file_attributes = flags;
3000 /* These are in a union so can't have both. */
3001 if (packed_ea_size && reparse_point_tag) {
3002 free(fn);
3003 return -EINVAL;
3004 }
3005 if (packed_ea_size) {
3006 fn->packed_ea_size = cpu_to_le16(packed_ea_size);
3007 fn->reserved = cpu_to_le16(0);
3008 } else {
3009 fn->reparse_point_tag = cpu_to_le32(reparse_point_tag);
3010 }
3011 fn->file_name_type = file_name_type;
3012 uname = fn->file_name;
3013 i = ntfs_mbstoucs_libntfscompat(file_name, &uname, i);
3014 if (i < 1) {
3015 free(fn);
3016 return -EINVAL;
3017 }
3018 if (i > 0xff) {
3019 free(fn);
3020 return -ENAMETOOLONG;
3021 }
3022 /* No terminating null in file names. */
3023 fn->file_name_length = i;
3024 fn_size = sizeof(FILE_NAME_ATTR) + i * sizeof(ntfschar);
3025 /* Increment the link count of @m_file. */
3026 i = le16_to_cpu(m_file->link_count);
3027 if (i == 0xffff) {
3028 ntfs_log_error("Too many hardlinks present already.\n");
3029 free(fn);
3030 return -EINVAL;
3031 }
3032 m_file->link_count = cpu_to_le16(i + 1);
3033 /* Add the file_name to @m_file. */
3034 i = insert_resident_attr_in_mft_record(m_file, AT_FILE_NAME, NULL, 0,
3035 CASE_SENSITIVE, cpu_to_le16(0),
3036 RESIDENT_ATTR_IS_INDEXED, (u8*)fn, fn_size);
3037 if (i < 0) {
3038 ntfs_log_error("create_hardlink failed adding file name attribute: "
3039 "%s\n", strerror(-i));
3040 free(fn);
3041 /* Undo link count increment. */
3042 m_file->link_count = cpu_to_le16(
3043 le16_to_cpu(m_file->link_count) - 1);
3044 return i;
3045 }
3046 /* Insert the index entry for file_name in @idx. */
3047 i = insert_file_link_in_dir_index(idx, ref_file, fn, fn_size);
3048 if (i < 0) {
3049 ntfs_log_error("create_hardlink failed inserting index entry: %s\n",
3050 strerror(-i));
3051 /* FIXME: Remove the file name attribute from @m_file. */
3052 free(fn);
3053 /* Undo link count increment. */
3054 m_file->link_count = cpu_to_le16(
3055 le16_to_cpu(m_file->link_count) - 1);
3056 return i;
3057 }
3058 free(fn);
3059 return 0;
3060 }
3061
3062 /**
3063 * index_obj_id_insert
3064 *
3065 * Insert an index entry with the key @guid and data pointing to the mft record
3066 * @ref in the $O index root of the mft record @m (which must be the mft record
3067 * for $ObjId).
3068 *
3069 * Return 0 on success or -errno on error.
3070 */
index_obj_id_insert(MFT_RECORD * m,const GUID * guid,const leMFT_REF ref)3071 static int index_obj_id_insert(MFT_RECORD *m, const GUID *guid,
3072 const leMFT_REF ref)
3073 {
3074 INDEX_ENTRY *idx_entry_new;
3075 int data_ofs, idx_size, err;
3076 OBJ_ID_INDEX_DATA *oi;
3077
3078 /*
3079 * Insert the index entry for the object id in the index.
3080 *
3081 * First determine the size of the index entry to be inserted. This
3082 * consists of the index entry header, followed by the index key, i.e.
3083 * the GUID, followed by the index data, i.e. OBJ_ID_INDEX_DATA.
3084 */
3085 data_ofs = (sizeof(INDEX_ENTRY_HEADER) + sizeof(GUID) + 7) & ~7;
3086 idx_size = (data_ofs + sizeof(OBJ_ID_INDEX_DATA) + 7) & ~7;
3087 idx_entry_new = ntfs_calloc(idx_size);
3088 if (!idx_entry_new)
3089 return -errno;
3090 idx_entry_new->data_offset = cpu_to_le16(data_ofs);
3091 idx_entry_new->data_length = cpu_to_le16(sizeof(OBJ_ID_INDEX_DATA));
3092 idx_entry_new->length = cpu_to_le16(idx_size);
3093 idx_entry_new->key_length = cpu_to_le16(sizeof(GUID));
3094 idx_entry_new->key.object_id = *guid;
3095 oi = (OBJ_ID_INDEX_DATA*)((u8*)idx_entry_new + data_ofs);
3096 oi->mft_reference = ref;
3097 err = insert_index_entry_in_res_dir_index(idx_entry_new, idx_size, m,
3098 NTFS_INDEX_O, 2, AT_UNUSED);
3099 free(idx_entry_new);
3100 if (err < 0) {
3101 ntfs_log_error("index_obj_id_insert failed inserting index "
3102 "entry: %s\n", strerror(-err));
3103 return err;
3104 }
3105 return 0;
3106 }
3107
3108 /**
3109 * mkntfs_cleanup
3110 */
mkntfs_cleanup(void)3111 static void mkntfs_cleanup(void)
3112 {
3113 struct BITMAP_ALLOCATION *p, *q;
3114
3115 /* Close the volume */
3116 if (g_vol) {
3117 if (g_vol->dev) {
3118 if (NDevOpen(g_vol->dev) && g_vol->dev->d_ops->close(g_vol->dev))
3119 ntfs_log_perror("Warning: Could not close %s", g_vol->dev->d_name);
3120 ntfs_device_free(g_vol->dev);
3121 }
3122 free(g_vol->vol_name);
3123 free(g_vol->attrdef);
3124 free(g_vol->upcase);
3125 free(g_vol);
3126 g_vol = NULL;
3127 }
3128
3129 /* Free any memory we've used */
3130 free(g_bad_blocks); g_bad_blocks = NULL;
3131 free(g_buf); g_buf = NULL;
3132 free(g_index_block); g_index_block = NULL;
3133 free(g_dynamic_buf); g_dynamic_buf = NULL;
3134 free(g_mft_bitmap); g_mft_bitmap = NULL;
3135 free(g_rl_bad); g_rl_bad = NULL;
3136 free(g_rl_boot); g_rl_boot = NULL;
3137 free(g_rl_logfile); g_rl_logfile = NULL;
3138 free(g_rl_mft); g_rl_mft = NULL;
3139 free(g_rl_mft_bmp); g_rl_mft_bmp = NULL;
3140 free(g_rl_mftmirr); g_rl_mftmirr = NULL;
3141
3142 p = g_allocation;
3143 while (p) {
3144 q = p->next;
3145 free(p);
3146 p = q;
3147 }
3148 }
3149
3150
3151 /**
3152 * mkntfs_open_partition -
3153 */
mkntfs_open_partition(ntfs_volume * vol)3154 static BOOL mkntfs_open_partition(ntfs_volume *vol)
3155 {
3156 BOOL result = FALSE;
3157 int i;
3158 struct stat sbuf;
3159 unsigned long mnt_flags;
3160
3161 /*
3162 * Allocate and initialize an ntfs device structure and attach it to
3163 * the volume.
3164 */
3165 vol->dev = ntfs_device_alloc(opts.dev_name, 0, &ntfs_device_default_io_ops, NULL);
3166 if (!vol->dev) {
3167 ntfs_log_perror("Could not create device");
3168 goto done;
3169 }
3170
3171 /* Open the device for reading or reading and writing. */
3172 if (opts.no_action) {
3173 ntfs_log_quiet("Running in READ-ONLY mode!\n");
3174 i = O_RDONLY;
3175 } else {
3176 i = O_RDWR;
3177 }
3178 if (vol->dev->d_ops->open(vol->dev, i)) {
3179 if (errno == ENOENT)
3180 ntfs_log_error("The device doesn't exist; did you specify it correctly?\n");
3181 else
3182 ntfs_log_perror("Could not open %s", vol->dev->d_name);
3183 goto done;
3184 }
3185 /* Verify we are dealing with a block device. */
3186 if (vol->dev->d_ops->stat(vol->dev, &sbuf)) {
3187 ntfs_log_perror("Error getting information about %s", vol->dev->d_name);
3188 goto done;
3189 }
3190
3191 if (!S_ISBLK(sbuf.st_mode)) {
3192 ntfs_log_error("%s is not a block device.\n", vol->dev->d_name);
3193 if (!opts.force) {
3194 ntfs_log_error("Refusing to make a filesystem here!\n");
3195 goto done;
3196 }
3197 if (!opts.num_sectors) {
3198 if (!sbuf.st_size && !sbuf.st_blocks) {
3199 ntfs_log_error("You must specify the number of sectors.\n");
3200 goto done;
3201 }
3202 if (opts.sector_size) {
3203 if (sbuf.st_size)
3204 opts.num_sectors = sbuf.st_size / opts.sector_size;
3205 else
3206 opts.num_sectors = ((s64)sbuf.st_blocks << 9) / opts.sector_size;
3207 } else {
3208 if (sbuf.st_size)
3209 opts.num_sectors = sbuf.st_size / 512;
3210 else
3211 opts.num_sectors = sbuf.st_blocks;
3212 opts.sector_size = 512;
3213 }
3214 }
3215 ntfs_log_warning("mkntfs forced anyway.\n");
3216 #ifdef HAVE_LINUX_MAJOR_H
3217 } else if ((IDE_DISK_MAJOR(MAJOR(sbuf.st_rdev)) &&
3218 MINOR(sbuf.st_rdev) % 64 == 0) ||
3219 (SCSI_DISK_MAJOR(MAJOR(sbuf.st_rdev)) &&
3220 MINOR(sbuf.st_rdev) % 16 == 0)) {
3221 ntfs_log_error("%s is entire device, not just one partition.\n", vol->dev->d_name);
3222 if (!opts.force) {
3223 ntfs_log_error("Refusing to make a filesystem here!\n");
3224 goto done;
3225 }
3226 ntfs_log_warning("mkntfs forced anyway.\n");
3227 #endif
3228 }
3229 /* Make sure the file system is not mounted. */
3230 if (ntfs_check_if_mounted(vol->dev->d_name, &mnt_flags)) {
3231 ntfs_log_perror("Failed to determine whether %s is mounted", vol->dev->d_name);
3232 } else if (mnt_flags & NTFS_MF_MOUNTED) {
3233 ntfs_log_error("%s is mounted.\n", vol->dev->d_name);
3234 if (!opts.force) {
3235 ntfs_log_error("Refusing to make a filesystem here!\n");
3236 goto done;
3237 }
3238 ntfs_log_warning("mkntfs forced anyway. Hope /etc/mtab is incorrect.\n");
3239 }
3240 result = TRUE;
3241 done:
3242 return result;
3243 }
3244
3245 /**
3246 * mkntfs_get_page_size - detect the system's memory page size.
3247 */
mkntfs_get_page_size(void)3248 static long mkntfs_get_page_size(void)
3249 {
3250 return NTFS_PAGE_SIZE;
3251 }
3252
3253 /**
3254 * mkntfs_override_vol_params -
3255 */
mkntfs_override_vol_params(ntfs_volume * vol)3256 static BOOL mkntfs_override_vol_params(ntfs_volume *vol)
3257 {
3258 s64 volume_size;
3259 long page_size;
3260 int i;
3261 BOOL winboot = TRUE;
3262
3263 /* If user didn't specify the sector size, determine it now. */
3264 if (opts.sector_size < 0) {
3265 opts.sector_size = ntfs_device_sector_size_get(vol->dev);
3266 if (opts.sector_size < 0) {
3267 ntfs_log_warning("The sector size was not specified "
3268 "for %s and it could not be obtained "
3269 "automatically. It has been set to 512 "
3270 "bytes.\n", vol->dev->d_name);
3271 opts.sector_size = 512;
3272 }
3273 }
3274 /* Validate sector size. */
3275 if ((opts.sector_size - 1) & opts.sector_size) {
3276 ntfs_log_error("The sector size is invalid. It must be a "
3277 "power of two, e.g. 512, 1024.\n");
3278 return FALSE;
3279 }
3280 if (opts.sector_size < 256 || opts.sector_size > 4096) {
3281 ntfs_log_error("The sector size is invalid. The minimum size "
3282 "is 256 bytes and the maximum is 4096 bytes.\n");
3283 return FALSE;
3284 }
3285 ntfs_log_debug("sector size = %ld bytes\n", opts.sector_size);
3286 /* Now set the device block size to the sector size. */
3287 if (ntfs_device_block_size_set(vol->dev, opts.sector_size))
3288 ntfs_log_debug("Failed to set the device block size to the "
3289 "sector size. This may cause problems when "
3290 "creating the backup boot sector and also may "
3291 "affect performance but should be harmless "
3292 "otherwise. Error: %s\n", strerror(errno));
3293 /* If user didn't specify the number of sectors, determine it now. */
3294 if (opts.num_sectors < 0) {
3295 opts.num_sectors = ntfs_device_size_get(vol->dev,
3296 opts.sector_size);
3297 if (opts.num_sectors <= 0) {
3298 ntfs_log_error("Couldn't determine the size of %s. "
3299 "Please specify the number of sectors "
3300 "manually.\n", vol->dev->d_name);
3301 return FALSE;
3302 }
3303 }
3304 ntfs_log_debug("number of sectors = %lld (0x%llx)\n", opts.num_sectors,
3305 opts.num_sectors);
3306 /*
3307 * Reserve the last sector for the backup boot sector unless the
3308 * sector size is less than 512 bytes in which case reserve 512 bytes
3309 * worth of sectors.
3310 */
3311 i = 1;
3312 if (opts.sector_size < 512)
3313 i = 512 / opts.sector_size;
3314 opts.num_sectors -= i;
3315 /* If user didn't specify the partition start sector, determine it. */
3316 if (opts.part_start_sect < 0) {
3317 opts.part_start_sect = ntfs_device_partition_start_sector_get(
3318 vol->dev);
3319 if (opts.part_start_sect < 0) {
3320 ntfs_log_warning("The partition start sector was not "
3321 "specified for %s and it could not be obtained "
3322 "automatically. It has been set to 0.\n",
3323 vol->dev->d_name);
3324 opts.part_start_sect = 0;
3325 winboot = FALSE;
3326 } else if (opts.part_start_sect >> 32) {
3327 ntfs_log_warning("The partition start sector specified "
3328 "for %s and the automatically determined value "
3329 "is too large. It has been set to 0.\n",
3330 vol->dev->d_name);
3331 opts.part_start_sect = 0;
3332 winboot = FALSE;
3333 }
3334 } else if (opts.part_start_sect >> 32) {
3335 ntfs_log_error("Invalid partition start sector. Maximum is "
3336 "4294967295 (2^32-1).\n");
3337 return FALSE;
3338 }
3339 /* If user didn't specify the sectors per track, determine it now. */
3340 if (opts.sectors_per_track < 0) {
3341 opts.sectors_per_track = ntfs_device_sectors_per_track_get(
3342 vol->dev);
3343 if (opts.sectors_per_track < 0) {
3344 ntfs_log_warning("The number of sectors per track was "
3345 "not specified for %s and it could not be "
3346 "obtained automatically. It has been set to "
3347 "0.\n", vol->dev->d_name);
3348 opts.sectors_per_track = 0;
3349 winboot = FALSE;
3350 } else if (opts.sectors_per_track > 65535) {
3351 ntfs_log_warning("The number of sectors per track was "
3352 "not specified for %s and the automatically "
3353 "determined value is too large. It has been "
3354 "set to 0.\n", vol->dev->d_name);
3355 opts.sectors_per_track = 0;
3356 winboot = FALSE;
3357 }
3358 } else if (opts.sectors_per_track > 65535) {
3359 ntfs_log_error("Invalid number of sectors per track. Maximum "
3360 "is 65535.\n");
3361 return FALSE;
3362 }
3363 /* If user didn't specify the number of heads, determine it now. */
3364 if (opts.heads < 0) {
3365 opts.heads = ntfs_device_heads_get(vol->dev);
3366 if (opts.heads < 0) {
3367 ntfs_log_warning("The number of heads was not "
3368 "specified for %s and it could not be obtained "
3369 "automatically. It has been set to 0.\n",
3370 vol->dev->d_name);
3371 opts.heads = 0;
3372 winboot = FALSE;
3373 } else if (opts.heads > 65535) {
3374 ntfs_log_warning("The number of heads was not "
3375 "specified for %s and the automatically "
3376 "determined value is too large. It has been "
3377 "set to 0.\n", vol->dev->d_name);
3378 opts.heads = 0;
3379 winboot = FALSE;
3380 }
3381 } else if (opts.heads > 65535) {
3382 ntfs_log_error("Invalid number of heads. Maximum is 65535.\n");
3383 return FALSE;
3384 }
3385 volume_size = opts.num_sectors * opts.sector_size;
3386 /* Validate volume size. */
3387 if (volume_size < (1 << 20)) { /* 1MiB */
3388 ntfs_log_error("Device is too small (%llikiB). Minimum NTFS "
3389 "volume size is 1MiB.\n",
3390 (long long)(volume_size / 1024));
3391 return FALSE;
3392 }
3393 ntfs_log_debug("volume size = %llikiB\n", volume_size / 1024);
3394 /* If user didn't specify the cluster size, determine it now. */
3395 if (!vol->cluster_size) {
3396 /*
3397 * Windows Vista always uses 4096 bytes as the default cluster
3398 * size regardless of the volume size so we do it, too.
3399 */
3400 vol->cluster_size = 4096;
3401 /* For small volumes on devices with large sector sizes. */
3402 if (vol->cluster_size < (u32)opts.sector_size)
3403 vol->cluster_size = opts.sector_size;
3404 /*
3405 * For huge volumes, grow the cluster size until the number of
3406 * clusters fits into 32 bits or the cluster size exceeds the
3407 * maximum limit of 64kiB.
3408 */
3409 while (volume_size >> (ffs(vol->cluster_size) - 1 + 32)) {
3410 vol->cluster_size <<= 1;
3411 if (vol->cluster_size > 65535) {
3412 ntfs_log_error("Device is too large to hold an "
3413 "NTFS volume (maximum size is "
3414 "256TiB).\n");
3415 return FALSE;
3416 }
3417 }
3418 ntfs_log_quiet("Cluster size has been automatically set to %u "
3419 "bytes.\n", (unsigned)vol->cluster_size);
3420 }
3421 /* Validate cluster size. */
3422 if (vol->cluster_size & (vol->cluster_size - 1)) {
3423 ntfs_log_error("The cluster size is invalid. It must be a "
3424 "power of two, e.g. 1024, 4096.\n");
3425 return FALSE;
3426 }
3427 if (vol->cluster_size < (u32)opts.sector_size) {
3428 ntfs_log_error("The cluster size is invalid. It must be equal "
3429 "to, or larger than, the sector size.\n");
3430 return FALSE;
3431 }
3432 if (vol->cluster_size > 128 * (u32)opts.sector_size) {
3433 ntfs_log_error("The cluster size is invalid. It cannot be "
3434 "more that 128 times the size of the sector "
3435 "size.\n");
3436 return FALSE;
3437 }
3438 if (vol->cluster_size > 65536) {
3439 ntfs_log_error("The cluster size is invalid. The maximum "
3440 "cluster size is 65536 bytes (64kiB).\n");
3441 return FALSE;
3442 }
3443 vol->cluster_size_bits = ffs(vol->cluster_size) - 1;
3444 ntfs_log_debug("cluster size = %u bytes\n",
3445 (unsigned int)vol->cluster_size);
3446 if (vol->cluster_size > 4096) {
3447 if (opts.enable_compression) {
3448 if (!opts.force) {
3449 ntfs_log_error("Windows cannot use compression "
3450 "when the cluster size is "
3451 "larger than 4096 bytes.\n");
3452 return FALSE;
3453 }
3454 opts.enable_compression = 0;
3455 }
3456 ntfs_log_warning("Windows cannot use compression when the "
3457 "cluster size is larger than 4096 bytes. "
3458 "Compression has been disabled for this "
3459 "volume.\n");
3460 }
3461 vol->nr_clusters = volume_size / vol->cluster_size;
3462 /*
3463 * Check the cluster_size and num_sectors for consistency with
3464 * sector_size and num_sectors. And check both of these for consistency
3465 * with volume_size.
3466 */
3467 if ((vol->nr_clusters != ((opts.num_sectors * opts.sector_size) /
3468 vol->cluster_size) ||
3469 (volume_size / opts.sector_size) != opts.num_sectors ||
3470 (volume_size / vol->cluster_size) !=
3471 vol->nr_clusters)) {
3472 /* XXX is this code reachable? */
3473 ntfs_log_error("Illegal combination of volume/cluster/sector "
3474 "size and/or cluster/sector number.\n");
3475 return FALSE;
3476 }
3477 ntfs_log_debug("number of clusters = %llu (0x%llx)\n",
3478 vol->nr_clusters, vol->nr_clusters);
3479 /* Number of clusters must fit within 32 bits (Win2k limitation). */
3480 if (vol->nr_clusters >> 32) {
3481 if (vol->cluster_size >= 65536) {
3482 ntfs_log_error("Device is too large to hold an NTFS "
3483 "volume (maximum size is 256TiB).\n");
3484 return FALSE;
3485 }
3486 ntfs_log_error("Number of clusters exceeds 32 bits. Please "
3487 "try again with a larger\ncluster size or "
3488 "leave the cluster size unspecified and the "
3489 "smallest possible cluster size for the size "
3490 "of the device will be used.\n");
3491 return FALSE;
3492 }
3493 page_size = mkntfs_get_page_size();
3494 /*
3495 * Set the mft record size. By default this is 1024 but it has to be
3496 * at least as big as a sector and not bigger than a page on the system
3497 * or the NTFS kernel driver will not be able to mount the volume.
3498 * TODO: The mft record size should be user specifiable just like the
3499 * "inode size" can be specified on other Linux/Unix file systems.
3500 */
3501 vol->mft_record_size = 1024;
3502 if (vol->mft_record_size < (u32)opts.sector_size)
3503 vol->mft_record_size = opts.sector_size;
3504 if (vol->mft_record_size > (unsigned long)page_size)
3505 ntfs_log_warning("Mft record size (%u bytes) exceeds system "
3506 "page size (%li bytes). You will not be able "
3507 "to mount this volume using the NTFS kernel "
3508 "driver.\n", (unsigned)vol->mft_record_size,
3509 page_size);
3510 vol->mft_record_size_bits = ffs(vol->mft_record_size) - 1;
3511 ntfs_log_debug("mft record size = %u bytes\n",
3512 (unsigned)vol->mft_record_size);
3513 /*
3514 * Set the index record size. By default this is 4096 but it has to be
3515 * at least as big as a sector and not bigger than a page on the system
3516 * or the NTFS kernel driver will not be able to mount the volume.
3517 * FIXME: Should we make the index record size to be user specifiable?
3518 */
3519 vol->indx_record_size = 4096;
3520 if (vol->indx_record_size < (u32)opts.sector_size)
3521 vol->indx_record_size = opts.sector_size;
3522 if (vol->indx_record_size > (unsigned long)page_size)
3523 ntfs_log_warning("Index record size (%u bytes) exceeds system "
3524 "page size (%li bytes). You will not be able "
3525 "to mount this volume using the NTFS kernel "
3526 "driver.\n", (unsigned)vol->indx_record_size,
3527 page_size);
3528 vol->indx_record_size_bits = ffs(vol->indx_record_size) - 1;
3529 ntfs_log_debug("index record size = %u bytes\n",
3530 (unsigned)vol->indx_record_size);
3531 if (!winboot) {
3532 ntfs_log_warning("To boot from a device, Windows needs the "
3533 "'partition start sector', the 'sectors per "
3534 "track' and the 'number of heads' to be "
3535 "set.\n");
3536 ntfs_log_warning("Windows will not be able to boot from this "
3537 "device.\n");
3538 }
3539 return TRUE;
3540 }
3541
3542 /**
3543 * mkntfs_initialize_bitmaps -
3544 */
mkntfs_initialize_bitmaps(void)3545 static BOOL mkntfs_initialize_bitmaps(void)
3546 {
3547 u64 i;
3548 int mft_bitmap_size;
3549
3550 /* Determine lcn bitmap byte size and allocate it. */
3551 g_lcn_bitmap_byte_size = (g_vol->nr_clusters + 7) >> 3;
3552 /* Needs to be multiple of 8 bytes. */
3553 g_lcn_bitmap_byte_size = (g_lcn_bitmap_byte_size + 7) & ~7;
3554 i = (g_lcn_bitmap_byte_size + g_vol->cluster_size - 1) &
3555 ~(g_vol->cluster_size - 1);
3556 ntfs_log_debug("g_lcn_bitmap_byte_size = %i, allocated = %llu\n",
3557 g_lcn_bitmap_byte_size, i);
3558 g_dynamic_buf_size = mkntfs_get_page_size();
3559 g_dynamic_buf = (u8*)ntfs_calloc(g_dynamic_buf_size);
3560 if (!g_dynamic_buf)
3561 return FALSE;
3562 /*
3563 * $Bitmap can overlap the end of the volume. Any bits in this region
3564 * must be set. This region also encompasses the backup boot sector.
3565 */
3566 if (!bitmap_allocate(g_vol->nr_clusters,
3567 ((s64)g_lcn_bitmap_byte_size << 3) - g_vol->nr_clusters))
3568 return (FALSE);
3569 /*
3570 * Mft size is 27 (NTFS 3.0+) mft records or one cluster, whichever is
3571 * bigger.
3572 */
3573 g_mft_size = 27;
3574 g_mft_size *= g_vol->mft_record_size;
3575 if (g_mft_size < (s32)g_vol->cluster_size)
3576 g_mft_size = g_vol->cluster_size;
3577 ntfs_log_debug("MFT size = %i (0x%x) bytes\n", g_mft_size, g_mft_size);
3578 /* Determine mft bitmap size and allocate it. */
3579 mft_bitmap_size = g_mft_size / g_vol->mft_record_size;
3580 /* Convert to bytes, at least one. */
3581 g_mft_bitmap_byte_size = (mft_bitmap_size + 7) >> 3;
3582 /* Mft bitmap is allocated in multiples of 8 bytes. */
3583 g_mft_bitmap_byte_size = (g_mft_bitmap_byte_size + 7) & ~7;
3584 ntfs_log_debug("mft_bitmap_size = %i, g_mft_bitmap_byte_size = %i\n",
3585 mft_bitmap_size, g_mft_bitmap_byte_size);
3586 g_mft_bitmap = ntfs_calloc(g_mft_bitmap_byte_size);
3587 if (!g_mft_bitmap)
3588 return FALSE;
3589 /* Create runlist for mft bitmap. */
3590 g_rl_mft_bmp = ntfs_malloc(2 * sizeof(runlist));
3591 if (!g_rl_mft_bmp)
3592 return FALSE;
3593
3594 g_rl_mft_bmp[0].vcn = 0LL;
3595 /* Mft bitmap is right after $Boot's data. */
3596 i = (8192 + g_vol->cluster_size - 1) / g_vol->cluster_size;
3597 g_rl_mft_bmp[0].lcn = i;
3598 /*
3599 * Size is always one cluster, even though valid data size and
3600 * initialized data size are only 8 bytes.
3601 */
3602 g_rl_mft_bmp[1].vcn = 1LL;
3603 g_rl_mft_bmp[0].length = 1LL;
3604 g_rl_mft_bmp[1].lcn = -1LL;
3605 g_rl_mft_bmp[1].length = 0LL;
3606 /* Allocate cluster for mft bitmap. */
3607 return (bitmap_allocate(i,1));
3608 }
3609
3610 /**
3611 * mkntfs_initialize_rl_mft -
3612 */
mkntfs_initialize_rl_mft(void)3613 static BOOL mkntfs_initialize_rl_mft(void)
3614 {
3615 int j;
3616 BOOL done;
3617
3618 /* If user didn't specify the mft lcn, determine it now. */
3619 if (!g_mft_lcn) {
3620 /*
3621 * We start at the higher value out of 16kiB and just after the
3622 * mft bitmap.
3623 */
3624 g_mft_lcn = g_rl_mft_bmp[0].lcn + g_rl_mft_bmp[0].length;
3625 if (g_mft_lcn * g_vol->cluster_size < 16 * 1024)
3626 g_mft_lcn = (16 * 1024 + g_vol->cluster_size - 1) /
3627 g_vol->cluster_size;
3628 }
3629 ntfs_log_debug("$MFT logical cluster number = 0x%llx\n", g_mft_lcn);
3630 /* Determine MFT zone size. */
3631 g_mft_zone_end = g_vol->nr_clusters;
3632 switch (opts.mft_zone_multiplier) { /* % of volume size in clusters */
3633 case 4:
3634 g_mft_zone_end = g_mft_zone_end >> 1; /* 50% */
3635 break;
3636 case 3:
3637 g_mft_zone_end = g_mft_zone_end * 3 >> 3;/* 37.5% */
3638 break;
3639 case 2:
3640 g_mft_zone_end = g_mft_zone_end >> 2; /* 25% */
3641 break;
3642 case 1:
3643 default:
3644 g_mft_zone_end = g_mft_zone_end >> 3; /* 12.5% */
3645 break;
3646 }
3647 ntfs_log_debug("MFT zone size = %lldkiB\n", g_mft_zone_end <<
3648 g_vol->cluster_size_bits >> 10 /* >> 10 == / 1024 */);
3649 /*
3650 * The mft zone begins with the mft data attribute, not at the beginning
3651 * of the device.
3652 */
3653 g_mft_zone_end += g_mft_lcn;
3654 /* Create runlist for mft. */
3655 g_rl_mft = ntfs_malloc(2 * sizeof(runlist));
3656 if (!g_rl_mft)
3657 return FALSE;
3658
3659 g_rl_mft[0].vcn = 0LL;
3660 g_rl_mft[0].lcn = g_mft_lcn;
3661 /* rounded up division by cluster size */
3662 j = (g_mft_size + g_vol->cluster_size - 1) / g_vol->cluster_size;
3663 g_rl_mft[1].vcn = j;
3664 g_rl_mft[0].length = j;
3665 g_rl_mft[1].lcn = -1LL;
3666 g_rl_mft[1].length = 0LL;
3667 /* Allocate clusters for mft. */
3668 bitmap_allocate(g_mft_lcn,j);
3669 /* Determine mftmirr_lcn (middle of volume). */
3670 g_mftmirr_lcn = (opts.num_sectors * opts.sector_size >> 1)
3671 / g_vol->cluster_size;
3672 ntfs_log_debug("$MFTMirr logical cluster number = 0x%llx\n",
3673 g_mftmirr_lcn);
3674 /* Create runlist for mft mirror. */
3675 g_rl_mftmirr = ntfs_malloc(2 * sizeof(runlist));
3676 if (!g_rl_mftmirr)
3677 return FALSE;
3678
3679 g_rl_mftmirr[0].vcn = 0LL;
3680 g_rl_mftmirr[0].lcn = g_mftmirr_lcn;
3681 /*
3682 * The mft mirror is either 4kb (the first four records) or one cluster
3683 * in size, which ever is bigger. In either case, it contains a
3684 * byte-for-byte identical copy of the beginning of the mft (i.e. either
3685 * the first four records (4kb) or the first cluster worth of records,
3686 * whichever is bigger).
3687 */
3688 j = (4 * g_vol->mft_record_size + g_vol->cluster_size - 1) / g_vol->cluster_size;
3689 g_rl_mftmirr[1].vcn = j;
3690 g_rl_mftmirr[0].length = j;
3691 g_rl_mftmirr[1].lcn = -1LL;
3692 g_rl_mftmirr[1].length = 0LL;
3693 /* Allocate clusters for mft mirror. */
3694 done = bitmap_allocate(g_mftmirr_lcn,j);
3695 g_logfile_lcn = g_mftmirr_lcn + j;
3696 ntfs_log_debug("$LogFile logical cluster number = 0x%llx\n",
3697 g_logfile_lcn);
3698 return (done);
3699 }
3700
3701 /**
3702 * mkntfs_initialize_rl_logfile -
3703 */
mkntfs_initialize_rl_logfile(void)3704 static BOOL mkntfs_initialize_rl_logfile(void)
3705 {
3706 int j;
3707 u64 volume_size;
3708
3709 /* Create runlist for log file. */
3710 g_rl_logfile = ntfs_malloc(2 * sizeof(runlist));
3711 if (!g_rl_logfile)
3712 return FALSE;
3713
3714
3715 volume_size = g_vol->nr_clusters << g_vol->cluster_size_bits;
3716
3717 g_rl_logfile[0].vcn = 0LL;
3718 g_rl_logfile[0].lcn = g_logfile_lcn;
3719 /*
3720 * Determine logfile_size from volume_size (rounded up to a cluster),
3721 * making sure it does not overflow the end of the volume.
3722 */
3723 if (volume_size < 2048LL * 1024) /* < 2MiB */
3724 g_logfile_size = 256LL * 1024; /* -> 256kiB */
3725 else if (volume_size < 4000000LL) /* < 4MB */
3726 g_logfile_size = 512LL * 1024; /* -> 512kiB */
3727 else if (volume_size <= 200LL * 1024 * 1024) /* < 200MiB */
3728 g_logfile_size = 2048LL * 1024; /* -> 2MiB */
3729 else {
3730 /*
3731 * FIXME: The $LogFile size is 64 MiB upwards from 12GiB but
3732 * the "200" divider below apparently approximates "100" or
3733 * some other value as the volume size decreases. For example:
3734 * Volume size LogFile size Ratio
3735 * 8799808 46048 191.100
3736 * 8603248 45072 190.877
3737 * 7341704 38768 189.375
3738 * 6144828 32784 187.433
3739 * 4192932 23024 182.111
3740 */
3741 if (volume_size >= 12LL << 30) /* > 12GiB */
3742 g_logfile_size = 64 << 20; /* -> 64MiB */
3743 else
3744 g_logfile_size = (volume_size / 200) &
3745 ~(g_vol->cluster_size - 1);
3746 }
3747 j = g_logfile_size / g_vol->cluster_size;
3748 while (g_rl_logfile[0].lcn + j >= g_vol->nr_clusters) {
3749 /*
3750 * $Logfile would overflow volume. Need to make it smaller than
3751 * the standard size. It's ok as we are creating a non-standard
3752 * volume anyway if it is that small.
3753 */
3754 g_logfile_size >>= 1;
3755 j = g_logfile_size / g_vol->cluster_size;
3756 }
3757 g_logfile_size = (g_logfile_size + g_vol->cluster_size - 1) &
3758 ~(g_vol->cluster_size - 1);
3759 ntfs_log_debug("$LogFile (journal) size = %ikiB\n",
3760 g_logfile_size / 1024);
3761 /*
3762 * FIXME: The 256kiB limit is arbitrary. Should find out what the real
3763 * minimum requirement for Windows is so it doesn't blue screen.
3764 */
3765 if (g_logfile_size < 256 << 10) {
3766 ntfs_log_error("$LogFile would be created with invalid size. "
3767 "This is not allowed as it would cause Windows "
3768 "to blue screen and during boot.\n");
3769 return FALSE;
3770 }
3771 g_rl_logfile[1].vcn = j;
3772 g_rl_logfile[0].length = j;
3773 g_rl_logfile[1].lcn = -1LL;
3774 g_rl_logfile[1].length = 0LL;
3775 /* Allocate clusters for log file. */
3776 return (bitmap_allocate(g_logfile_lcn,j));
3777 }
3778
3779 /**
3780 * mkntfs_initialize_rl_boot -
3781 */
mkntfs_initialize_rl_boot(void)3782 static BOOL mkntfs_initialize_rl_boot(void)
3783 {
3784 int j;
3785 /* Create runlist for $Boot. */
3786 g_rl_boot = ntfs_malloc(2 * sizeof(runlist));
3787 if (!g_rl_boot)
3788 return FALSE;
3789
3790 g_rl_boot[0].vcn = 0LL;
3791 g_rl_boot[0].lcn = 0LL;
3792 /*
3793 * $Boot is always 8192 (0x2000) bytes or 1 cluster, whichever is
3794 * bigger.
3795 */
3796 j = (8192 + g_vol->cluster_size - 1) / g_vol->cluster_size;
3797 g_rl_boot[1].vcn = j;
3798 g_rl_boot[0].length = j;
3799 g_rl_boot[1].lcn = -1LL;
3800 g_rl_boot[1].length = 0LL;
3801 /* Allocate clusters for $Boot. */
3802 return (bitmap_allocate(0,j));
3803 }
3804
3805 /**
3806 * mkntfs_initialize_rl_bad -
3807 */
mkntfs_initialize_rl_bad(void)3808 static BOOL mkntfs_initialize_rl_bad(void)
3809 {
3810 /* Create runlist for $BadClus, $DATA named stream $Bad. */
3811 g_rl_bad = ntfs_malloc(2 * sizeof(runlist));
3812 if (!g_rl_bad)
3813 return FALSE;
3814
3815 g_rl_bad[0].vcn = 0LL;
3816 g_rl_bad[0].lcn = -1LL;
3817 /*
3818 * $BadClus named stream $Bad contains the whole volume as a single
3819 * sparse runlist entry.
3820 */
3821 g_rl_bad[1].vcn = g_vol->nr_clusters;
3822 g_rl_bad[0].length = g_vol->nr_clusters;
3823 g_rl_bad[1].lcn = -1LL;
3824 g_rl_bad[1].length = 0LL;
3825
3826 /* TODO: Mark bad blocks as such. */
3827 return TRUE;
3828 }
3829
3830 /**
3831 * mkntfs_fill_device_with_zeroes -
3832 */
mkntfs_fill_device_with_zeroes(void)3833 static BOOL mkntfs_fill_device_with_zeroes(void)
3834 {
3835 /*
3836 * If not quick format, fill the device with 0s.
3837 * FIXME: Except bad blocks! (AIA)
3838 */
3839 int i;
3840 ssize_t bw;
3841 unsigned long long position;
3842 float progress_inc = (float)g_vol->nr_clusters / 100;
3843 u64 volume_size;
3844
3845 volume_size = g_vol->nr_clusters << g_vol->cluster_size_bits;
3846
3847 ntfs_log_progress("Initializing device with zeroes: 0%%");
3848 for (position = 0; position < (unsigned long long)g_vol->nr_clusters;
3849 position++) {
3850 if (!(position % (int)(progress_inc+1))) {
3851 ntfs_log_progress("\b\b\b\b%3.0f%%", position /
3852 progress_inc);
3853 }
3854 bw = mkntfs_write(g_vol->dev, g_buf, g_vol->cluster_size);
3855 if (bw != (ssize_t)g_vol->cluster_size) {
3856 if (bw != -1 || errno != EIO) {
3857 ntfs_log_error("This should not happen.\n");
3858 return FALSE;
3859 }
3860 if (!position) {
3861 ntfs_log_error("Error: Cluster zero is bad. "
3862 "Cannot create NTFS file "
3863 "system.\n");
3864 return FALSE;
3865 }
3866 /* Add the baddie to our bad blocks list. */
3867 if (!append_to_bad_blocks(position))
3868 return FALSE;
3869 ntfs_log_quiet("\nFound bad cluster (%lld). Adding to "
3870 "list of bad blocks.\nInitializing "
3871 "device with zeroes: %3.0f%%", position,
3872 position / progress_inc);
3873 /* Seek to next cluster. */
3874 g_vol->dev->d_ops->seek(g_vol->dev,
3875 ((off_t)position + 1) *
3876 g_vol->cluster_size, SEEK_SET);
3877 }
3878 }
3879 ntfs_log_progress("\b\b\b\b100%%");
3880 position = (volume_size & (g_vol->cluster_size - 1)) /
3881 opts.sector_size;
3882 for (i = 0; (unsigned long)i < position; i++) {
3883 bw = mkntfs_write(g_vol->dev, g_buf, opts.sector_size);
3884 if (bw != opts.sector_size) {
3885 if (bw != -1 || errno != EIO) {
3886 ntfs_log_error("This should not happen.\n");
3887 return FALSE;
3888 } else if (i + 1ull == position) {
3889 ntfs_log_error("Error: Bad cluster found in "
3890 "location reserved for system "
3891 "file $Boot.\n");
3892 return FALSE;
3893 }
3894 /* Seek to next sector. */
3895 g_vol->dev->d_ops->seek(g_vol->dev,
3896 opts.sector_size, SEEK_CUR);
3897 }
3898 }
3899 ntfs_log_progress(" - Done.\n");
3900 return TRUE;
3901 }
3902
3903 /**
3904 * mkntfs_sync_index_record
3905 *
3906 * (ERSO) made a function out of this, but the reason for doing that
3907 * disappeared during coding....
3908 */
mkntfs_sync_index_record(INDEX_ALLOCATION * idx,MFT_RECORD * m,ntfschar * name,u32 name_len)3909 static BOOL mkntfs_sync_index_record(INDEX_ALLOCATION* idx, MFT_RECORD* m,
3910 ntfschar* name, u32 name_len)
3911 {
3912 int i, err;
3913 ntfs_attr_search_ctx *ctx;
3914 ATTR_RECORD *a;
3915 long long lw;
3916 runlist *rl_index = NULL;
3917
3918 i = 5 * sizeof(ntfschar);
3919 ctx = ntfs_attr_get_search_ctx(NULL, m);
3920 if (!ctx) {
3921 ntfs_log_perror("Failed to allocate attribute search context");
3922 return FALSE;
3923 }
3924 /* FIXME: This should be IGNORE_CASE! */
3925 if (mkntfs_attr_lookup(AT_INDEX_ALLOCATION, name, name_len,
3926 CASE_SENSITIVE, 0, NULL, 0, ctx)) {
3927 ntfs_attr_put_search_ctx(ctx);
3928 ntfs_log_error("BUG: $INDEX_ALLOCATION attribute not found.\n");
3929 return FALSE;
3930 }
3931 a = ctx->attr;
3932 rl_index = ntfs_mapping_pairs_decompress(g_vol, a, NULL);
3933 if (!rl_index) {
3934 ntfs_attr_put_search_ctx(ctx);
3935 ntfs_log_error("Failed to decompress runlist of $INDEX_ALLOCATION "
3936 "attribute.\n");
3937 return FALSE;
3938 }
3939 if (sle64_to_cpu(a->initialized_size) < i) {
3940 ntfs_attr_put_search_ctx(ctx);
3941 free(rl_index);
3942 ntfs_log_error("BUG: $INDEX_ALLOCATION attribute too short.\n");
3943 return FALSE;
3944 }
3945 ntfs_attr_put_search_ctx(ctx);
3946 i = sizeof(INDEX_BLOCK) - sizeof(INDEX_HEADER) +
3947 le32_to_cpu(idx->index.allocated_size);
3948 err = ntfs_mst_pre_write_fixup((NTFS_RECORD*)idx, i);
3949 if (err) {
3950 free(rl_index);
3951 ntfs_log_error("ntfs_mst_pre_write_fixup() failed while "
3952 "syncing index block.\n");
3953 return FALSE;
3954 }
3955 lw = ntfs_rlwrite(g_vol->dev, rl_index, (u8*)idx, i, NULL,
3956 WRITE_STANDARD);
3957 free(rl_index);
3958 if (lw != i) {
3959 ntfs_log_error("Error writing $INDEX_ALLOCATION.\n");
3960 return FALSE;
3961 }
3962 /* No more changes to @idx below here so no need for fixup: */
3963 /* ntfs_mst_post_write_fixup((NTFS_RECORD*)idx); */
3964 return TRUE;
3965 }
3966
3967 /**
3968 * create_file_volume -
3969 */
create_file_volume(MFT_RECORD * m,leMFT_REF root_ref,VOLUME_FLAGS fl,const GUID * volume_guid)3970 static BOOL create_file_volume(MFT_RECORD *m, leMFT_REF root_ref,
3971 VOLUME_FLAGS fl, const GUID *volume_guid)
3972 {
3973 int i, err;
3974 u8 *sd;
3975
3976 ntfs_log_verbose("Creating $Volume (mft record 3)\n");
3977 m = (MFT_RECORD*)(g_buf + 3 * g_vol->mft_record_size);
3978 err = create_hardlink(g_index_block, root_ref, m,
3979 MK_LE_MREF(FILE_Volume, FILE_Volume), 0LL, 0LL,
3980 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
3981 "$Volume", FILE_NAME_WIN32_AND_DOS);
3982 if (!err) {
3983 init_system_file_sd(FILE_Volume, &sd, &i);
3984 err = add_attr_sd(m, sd, i);
3985 }
3986 if (!err)
3987 err = add_attr_data(m, NULL, 0, CASE_SENSITIVE,
3988 const_cpu_to_le16(0), NULL, 0);
3989 if (!err)
3990 err = add_attr_vol_name(m, g_vol->vol_name, g_vol->vol_name ?
3991 strlen(g_vol->vol_name) : 0);
3992 if (!err) {
3993 if (fl & VOLUME_IS_DIRTY)
3994 ntfs_log_quiet("Setting the volume dirty so check "
3995 "disk runs on next reboot into "
3996 "Windows.\n");
3997 err = add_attr_vol_info(m, fl, g_vol->major_ver,
3998 g_vol->minor_ver);
3999 }
4000 if (!err && opts.with_uuid)
4001 err = add_attr_object_id(m, volume_guid);
4002 if (err < 0) {
4003 ntfs_log_error("Couldn't create $Volume: %s\n",
4004 strerror(-err));
4005 return FALSE;
4006 }
4007 return TRUE;
4008 }
4009
4010 /**
4011 * create_backup_boot_sector
4012 *
4013 * Return 0 on success or -1 if it couldn't be created.
4014 */
create_backup_boot_sector(u8 * buff)4015 static int create_backup_boot_sector(u8 *buff)
4016 {
4017 const char *s;
4018 ssize_t bw;
4019 int size, e;
4020
4021 ntfs_log_verbose("Creating backup boot sector.\n");
4022 /*
4023 * Write the first max(512, opts.sector_size) bytes from buf to the
4024 * last sector, but limit that to 8192 bytes of written data since that
4025 * is how big $Boot is (and how big our buffer is)..
4026 */
4027 size = 512;
4028 if (size < opts.sector_size)
4029 size = opts.sector_size;
4030 if (g_vol->dev->d_ops->seek(g_vol->dev, (opts.num_sectors + 1) *
4031 opts.sector_size - size, SEEK_SET) == (off_t)-1) {
4032 ntfs_log_perror("Seek failed");
4033 goto bb_err;
4034 }
4035 if (size > 8192)
4036 size = 8192;
4037 bw = mkntfs_write(g_vol->dev, buff, size);
4038 if (bw == size)
4039 return 0;
4040 e = errno;
4041 if (bw == -1LL)
4042 s = strerror(e);
4043 else
4044 s = "unknown error";
4045 /* At least some 2.4 kernels return EIO instead of ENOSPC. */
4046 if (bw != -1LL || (bw == -1LL && e != ENOSPC && e != EIO)) {
4047 ntfs_log_critical("Couldn't write backup boot sector: %s\n", s);
4048 return -1;
4049 }
4050 bb_err:
4051 ntfs_log_error("Couldn't write backup boot sector. This is due to a "
4052 "limitation in the\nLinux kernel. This is not a major "
4053 "problem as Windows check disk will create the\n"
4054 "backup boot sector when it is run on your next boot "
4055 "into Windows.\n");
4056 return -1;
4057 }
4058
4059 /**
4060 * mkntfs_create_root_structures -
4061 */
mkntfs_create_root_structures(void)4062 static BOOL mkntfs_create_root_structures(void)
4063 {
4064 NTFS_BOOT_SECTOR *bs;
4065 MFT_RECORD *m;
4066 leMFT_REF root_ref;
4067 leMFT_REF extend_ref;
4068 int i;
4069 int j;
4070 int err;
4071 u8 *sd;
4072 FILE_ATTR_FLAGS extend_flags;
4073 VOLUME_FLAGS volume_flags = const_cpu_to_le16(0);
4074 int nr_sysfiles;
4075 int buf_sds_first_size;
4076 char *buf_sds;
4077 GUID vol_guid;
4078
4079 ntfs_log_quiet("Creating NTFS volume structures.\n");
4080 nr_sysfiles = 27;
4081 /*
4082 * Setup an empty mft record. Note, we can just give 0 as the mft
4083 * reference as we are creating an NTFS 1.2 volume for which the mft
4084 * reference is ignored by ntfs_mft_record_layout().
4085 *
4086 * Copy the mft record onto all 16 records in the buffer and setup the
4087 * sequence numbers of each system file to equal the mft record number
4088 * of that file (only for $MFT is the sequence number 1 rather than 0).
4089 */
4090 for (i = 0; i < nr_sysfiles; i++) {
4091 if (ntfs_mft_record_layout(g_vol, 0, m = (MFT_RECORD *)(g_buf +
4092 i * g_vol->mft_record_size))) {
4093 ntfs_log_error("Failed to layout system mft records."
4094 "\n");
4095 return FALSE;
4096 }
4097 if (i == 0 || i > 23)
4098 m->sequence_number = cpu_to_le16(1);
4099 else
4100 m->sequence_number = cpu_to_le16(i);
4101 }
4102 /*
4103 * If only one cluster contains all system files then
4104 * fill the rest of it with empty, formatted records.
4105 */
4106 if (nr_sysfiles * (s32)g_vol->mft_record_size < g_mft_size) {
4107 for (i = nr_sysfiles;
4108 i * (s32)g_vol->mft_record_size < g_mft_size; i++) {
4109 m = (MFT_RECORD *)(g_buf + i * g_vol->mft_record_size);
4110 if (ntfs_mft_record_layout(g_vol, 0, m)) {
4111 ntfs_log_error("Failed to layout mft record."
4112 "\n");
4113 return FALSE;
4114 }
4115 m->flags = cpu_to_le16(0);
4116 m->sequence_number = cpu_to_le16(i);
4117 }
4118 }
4119 /*
4120 * Create the 16 system files, adding the system information attribute
4121 * to each as well as marking them in use in the mft bitmap.
4122 */
4123 for (i = 0; i < nr_sysfiles; i++) {
4124 le32 file_attrs;
4125
4126 m = (MFT_RECORD*)(g_buf + i * g_vol->mft_record_size);
4127 if (i < 16 || i > 23) {
4128 m->mft_record_number = cpu_to_le32(i);
4129 m->flags |= MFT_RECORD_IN_USE;
4130 ntfs_bit_set(g_mft_bitmap, 0LL + i, 1);
4131 }
4132 file_attrs = FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM;
4133 if (i == FILE_root) {
4134 file_attrs |= FILE_ATTR_ARCHIVE;
4135 if (opts.disable_indexing)
4136 file_attrs |= FILE_ATTR_NOT_CONTENT_INDEXED;
4137 if (opts.enable_compression)
4138 file_attrs |= FILE_ATTR_COMPRESSED;
4139 }
4140 /* setting specific security_id flag and */
4141 /* file permissions for ntfs 3.x */
4142 if (i == 0 || i == 1 || i == 2 || i == 6 || i == 8 ||
4143 i == 10) {
4144 add_attr_std_info(m, file_attrs,
4145 cpu_to_le32(0x0100));
4146 } else if (i == 9) {
4147 file_attrs |= FILE_ATTR_VIEW_INDEX_PRESENT;
4148 add_attr_std_info(m, file_attrs,
4149 cpu_to_le32(0x0101));
4150 } else if (i == 11) {
4151 add_attr_std_info(m, file_attrs,
4152 cpu_to_le32(0x0101));
4153 } else if (i == 24 || i == 25 || i == 26) {
4154 file_attrs |= FILE_ATTR_ARCHIVE;
4155 file_attrs |= FILE_ATTR_VIEW_INDEX_PRESENT;
4156 add_attr_std_info(m, file_attrs,
4157 cpu_to_le32(0x0101));
4158 } else {
4159 add_attr_std_info(m, file_attrs,
4160 cpu_to_le32(0x00));
4161 }
4162 }
4163 /* The root directory mft reference. */
4164 root_ref = MK_LE_MREF(FILE_root, FILE_root);
4165 extend_ref = MK_LE_MREF(11,11);
4166 ntfs_log_verbose("Creating root directory (mft record 5)\n");
4167 m = (MFT_RECORD*)(g_buf + 5 * g_vol->mft_record_size);
4168 m->flags |= MFT_RECORD_IS_DIRECTORY;
4169 m->link_count = cpu_to_le16(le16_to_cpu(m->link_count) + 1);
4170 err = add_attr_file_name(m, root_ref, 0LL, 0LL,
4171 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM |
4172 FILE_ATTR_I30_INDEX_PRESENT, 0, 0, ".",
4173 FILE_NAME_WIN32_AND_DOS);
4174 if (!err) {
4175 init_root_sd(&sd, &i);
4176 err = add_attr_sd(m, sd, i);
4177 }
4178 /* FIXME: This should be IGNORE_CASE */
4179 if (!err)
4180 err = add_attr_index_root(m, "$I30", 4, CASE_SENSITIVE,
4181 AT_FILE_NAME, COLLATION_FILE_NAME,
4182 g_vol->indx_record_size);
4183 /* FIXME: This should be IGNORE_CASE */
4184 if (!err)
4185 err = upgrade_to_large_index(m, "$I30", 4, CASE_SENSITIVE,
4186 &g_index_block);
4187 if (!err) {
4188 ntfs_attr_search_ctx *ctx;
4189 ATTR_RECORD *a;
4190 ctx = ntfs_attr_get_search_ctx(NULL, m);
4191 if (!ctx) {
4192 ntfs_log_perror("Failed to allocate attribute search "
4193 "context");
4194 return FALSE;
4195 }
4196 /* There is exactly one file name so this is ok. */
4197 if (mkntfs_attr_lookup(AT_FILE_NAME, AT_UNNAMED, 0,
4198 CASE_SENSITIVE, 0, NULL, 0, ctx)) {
4199 ntfs_attr_put_search_ctx(ctx);
4200 ntfs_log_error("BUG: $FILE_NAME attribute not found."
4201 "\n");
4202 return FALSE;
4203 }
4204 a = ctx->attr;
4205 err = insert_file_link_in_dir_index(g_index_block, root_ref,
4206 (FILE_NAME_ATTR*)((char*)a +
4207 le16_to_cpu(a->value_offset)),
4208 le32_to_cpu(a->value_length));
4209 ntfs_attr_put_search_ctx(ctx);
4210 }
4211 if (err) {
4212 ntfs_log_error("Couldn't create root directory: %s\n",
4213 strerror(-err));
4214 return FALSE;
4215 }
4216 /* Add all other attributes, on a per-file basis for clarity. */
4217 ntfs_log_verbose("Creating $MFT (mft record 0)\n");
4218 m = (MFT_RECORD*)g_buf;
4219 err = add_attr_data_positioned(m, NULL, 0, CASE_SENSITIVE,
4220 const_cpu_to_le16(0), g_rl_mft, g_buf, g_mft_size);
4221 if (!err)
4222 err = create_hardlink(g_index_block, root_ref, m,
4223 MK_LE_MREF(FILE_MFT, 1),
4224 ((g_mft_size - 1)
4225 | (g_vol->cluster_size - 1)) + 1,
4226 g_mft_size, FILE_ATTR_HIDDEN |
4227 FILE_ATTR_SYSTEM, 0, 0, "$MFT",
4228 FILE_NAME_WIN32_AND_DOS);
4229 /* mft_bitmap is not modified in mkntfs; no need to sync it later. */
4230 if (!err)
4231 err = add_attr_bitmap_positioned(m, NULL, 0, CASE_SENSITIVE,
4232 g_rl_mft_bmp,
4233 g_mft_bitmap, g_mft_bitmap_byte_size);
4234 if (err < 0) {
4235 ntfs_log_error("Couldn't create $MFT: %s\n", strerror(-err));
4236 return FALSE;
4237 }
4238 ntfs_log_verbose("Creating $MFTMirr (mft record 1)\n");
4239 m = (MFT_RECORD*)(g_buf + 1 * g_vol->mft_record_size);
4240 err = add_attr_data_positioned(m, NULL, 0, CASE_SENSITIVE,
4241 const_cpu_to_le16(0), g_rl_mftmirr, g_buf,
4242 g_rl_mftmirr[0].length * g_vol->cluster_size);
4243 if (!err)
4244 err = create_hardlink(g_index_block, root_ref, m,
4245 MK_LE_MREF(FILE_MFTMirr, FILE_MFTMirr),
4246 g_rl_mftmirr[0].length * g_vol->cluster_size,
4247 g_rl_mftmirr[0].length * g_vol->cluster_size,
4248 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4249 "$MFTMirr", FILE_NAME_WIN32_AND_DOS);
4250 if (err < 0) {
4251 ntfs_log_error("Couldn't create $MFTMirr: %s\n",
4252 strerror(-err));
4253 return FALSE;
4254 }
4255 ntfs_log_verbose("Creating $LogFile (mft record 2)\n");
4256 m = (MFT_RECORD*)(g_buf + 2 * g_vol->mft_record_size);
4257 err = add_attr_data_positioned(m, NULL, 0, CASE_SENSITIVE,
4258 const_cpu_to_le16(0), g_rl_logfile,
4259 (const u8*)NULL, g_logfile_size);
4260 if (!err)
4261 err = create_hardlink(g_index_block, root_ref, m,
4262 MK_LE_MREF(FILE_LogFile, FILE_LogFile),
4263 g_logfile_size, g_logfile_size,
4264 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4265 "$LogFile", FILE_NAME_WIN32_AND_DOS);
4266 if (err < 0) {
4267 ntfs_log_error("Couldn't create $LogFile: %s\n",
4268 strerror(-err));
4269 return FALSE;
4270 }
4271 ntfs_log_verbose("Creating $AttrDef (mft record 4)\n");
4272 m = (MFT_RECORD*)(g_buf + 4 * g_vol->mft_record_size);
4273 err = add_attr_data(m, NULL, 0, CASE_SENSITIVE, const_cpu_to_le16(0),
4274 (u8*)g_vol->attrdef, g_vol->attrdef_len);
4275 /*
4276 * The $Info only exists since Windows 8, but it apparently
4277 * does not disturb chkdsk from earlier versions.
4278 */
4279 if (!err)
4280 err = add_attr_data(m, "$Info", 5, CASE_SENSITIVE,
4281 const_cpu_to_le16(0),
4282 (u8*)g_upcaseinfo, sizeof(struct UPCASEINFO));
4283 if (!err)
4284 err = create_hardlink(g_index_block, root_ref, m,
4285 MK_LE_MREF(FILE_AttrDef, FILE_AttrDef),
4286 (g_vol->attrdef_len + g_vol->cluster_size - 1) &
4287 ~(g_vol->cluster_size - 1), g_vol->attrdef_len,
4288 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4289 "$AttrDef", FILE_NAME_WIN32_AND_DOS);
4290 if (!err) {
4291 init_system_file_sd(FILE_AttrDef, &sd, &i);
4292 err = add_attr_sd(m, sd, i);
4293 }
4294 if (err < 0) {
4295 ntfs_log_error("Couldn't create $AttrDef: %s\n",
4296 strerror(-err));
4297 return FALSE;
4298 }
4299 ntfs_log_verbose("Creating $Bitmap (mft record 6)\n");
4300 m = (MFT_RECORD*)(g_buf + 6 * g_vol->mft_record_size);
4301 /* the data attribute of $Bitmap must be non-resident or otherwise */
4302 /* windows 2003 will regard the volume as corrupt (ERSO) */
4303 if (!err)
4304 err = insert_non_resident_attr_in_mft_record(m,
4305 AT_DATA, NULL, 0, CASE_SENSITIVE,
4306 const_cpu_to_le16(0), (const u8*)NULL,
4307 g_lcn_bitmap_byte_size, WRITE_BITMAP);
4308
4309
4310 if (!err)
4311 err = create_hardlink(g_index_block, root_ref, m,
4312 MK_LE_MREF(FILE_Bitmap, FILE_Bitmap),
4313 (g_lcn_bitmap_byte_size + g_vol->cluster_size -
4314 1) & ~(g_vol->cluster_size - 1),
4315 g_lcn_bitmap_byte_size,
4316 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4317 "$Bitmap", FILE_NAME_WIN32_AND_DOS);
4318 if (err < 0) {
4319 ntfs_log_error("Couldn't create $Bitmap: %s\n", strerror(-err));
4320 return FALSE;
4321 }
4322 ntfs_log_verbose("Creating $Boot (mft record 7)\n");
4323 m = (MFT_RECORD*)(g_buf + 7 * g_vol->mft_record_size);
4324 bs = ntfs_calloc(8192);
4325 if (!bs)
4326 return FALSE;
4327 memcpy(bs, boot_array, sizeof(boot_array));
4328 /*
4329 * Create the boot sector in bs. Note, that bs is already zeroed
4330 * in the boot sector section and that it has the NTFS OEM id/magic
4331 * already inserted, so no need to worry about these things.
4332 */
4333 bs->bpb.bytes_per_sector = cpu_to_le16(opts.sector_size);
4334 bs->bpb.sectors_per_cluster = (u8)(g_vol->cluster_size /
4335 opts.sector_size);
4336 bs->bpb.media_type = 0xf8; /* hard disk */
4337 bs->bpb.sectors_per_track = cpu_to_le16(opts.sectors_per_track);
4338 ntfs_log_debug("sectors per track = %ld (0x%lx)\n",
4339 opts.sectors_per_track, opts.sectors_per_track);
4340 bs->bpb.heads = cpu_to_le16(opts.heads);
4341 ntfs_log_debug("heads = %ld (0x%lx)\n", opts.heads, opts.heads);
4342 bs->bpb.hidden_sectors = cpu_to_le32(opts.part_start_sect);
4343 ntfs_log_debug("hidden sectors = %llu (0x%llx)\n", opts.part_start_sect,
4344 opts.part_start_sect);
4345 bs->physical_drive = 0x80; /* boot from hard disk */
4346 bs->extended_boot_signature = 0x80; /* everybody sets this, so we do */
4347 bs->number_of_sectors = cpu_to_sle64(opts.num_sectors);
4348 bs->mft_lcn = cpu_to_sle64(g_mft_lcn);
4349 bs->mftmirr_lcn = cpu_to_sle64(g_mftmirr_lcn);
4350 if (g_vol->mft_record_size >= g_vol->cluster_size) {
4351 bs->clusters_per_mft_record = g_vol->mft_record_size /
4352 g_vol->cluster_size;
4353 } else {
4354 bs->clusters_per_mft_record = -(ffs(g_vol->mft_record_size) -
4355 1);
4356 if ((u32)(1 << -bs->clusters_per_mft_record) !=
4357 g_vol->mft_record_size) {
4358 ntfs_log_error("BUG: calculated clusters_per_mft_record"
4359 " is wrong (= 0x%x)\n",
4360 bs->clusters_per_mft_record);
4361 free(bs);
4362 return FALSE;
4363 }
4364 }
4365 ntfs_log_debug("clusters per mft record = %i (0x%x)\n",
4366 bs->clusters_per_mft_record,
4367 bs->clusters_per_mft_record);
4368 if (g_vol->indx_record_size >= g_vol->cluster_size) {
4369 bs->clusters_per_index_record = g_vol->indx_record_size /
4370 g_vol->cluster_size;
4371 } else {
4372 bs->clusters_per_index_record = -g_vol->indx_record_size_bits;
4373 if ((1 << -bs->clusters_per_index_record) !=
4374 (s32)g_vol->indx_record_size) {
4375 ntfs_log_error("BUG: calculated "
4376 "clusters_per_index_record is wrong "
4377 "(= 0x%x)\n",
4378 bs->clusters_per_index_record);
4379 free(bs);
4380 return FALSE;
4381 }
4382 }
4383 ntfs_log_debug("clusters per index block = %i (0x%x)\n",
4384 bs->clusters_per_index_record,
4385 bs->clusters_per_index_record);
4386 /* Generate a 64-bit random number for the serial number. */
4387 bs->volume_serial_number = cpu_to_le64(((u64)random() << 32) |
4388 ((u64)random() & 0xffffffff));
4389 /*
4390 * Leave zero for now as NT4 leaves it zero, too. If want it later, see
4391 * ../libntfs/bootsect.c for how to calculate it.
4392 */
4393 bs->checksum = cpu_to_le32(0);
4394 /* Make sure the bootsector is ok. */
4395 if (!ntfs_boot_sector_is_ntfs(bs)) {
4396 free(bs);
4397 ntfs_log_error("FATAL: Generated boot sector is invalid!\n");
4398 return FALSE;
4399 }
4400 err = add_attr_data_positioned(m, NULL, 0, CASE_SENSITIVE,
4401 const_cpu_to_le16(0), g_rl_boot, (u8*)bs, 8192);
4402 if (!err)
4403 err = create_hardlink(g_index_block, root_ref, m,
4404 MK_LE_MREF(FILE_Boot, FILE_Boot),
4405 (8192 + g_vol->cluster_size - 1) &
4406 ~(g_vol->cluster_size - 1), 8192,
4407 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4408 "$Boot", FILE_NAME_WIN32_AND_DOS);
4409 if (!err) {
4410 init_system_file_sd(FILE_Boot, &sd, &i);
4411 err = add_attr_sd(m, sd, i);
4412 }
4413 if (err < 0) {
4414 free(bs);
4415 ntfs_log_error("Couldn't create $Boot: %s\n", strerror(-err));
4416 return FALSE;
4417 }
4418 if (create_backup_boot_sector((u8*)bs)) {
4419 /*
4420 * Pre-2.6 kernels couldn't access the last sector if it was
4421 * odd and we failed to set the device block size to the sector
4422 * size, hence we schedule chkdsk to create it.
4423 */
4424 volume_flags |= VOLUME_IS_DIRTY;
4425 }
4426 free(bs);
4427 /*
4428 * We cheat a little here and if the user has requested all times to be
4429 * set to zero then we set the GUID to zero as well. This options is
4430 * only used for development purposes so that should be fine.
4431 */
4432 if (!opts.use_epoch_time) {
4433 /* Generate a GUID for the volume. */
4434 #ifdef ENABLE_UUID
4435 uuid_generate((void*)&vol_guid);
4436 #else
4437 ntfs_generate_guid(&vol_guid);
4438 #endif
4439 } else
4440 memset(&vol_guid, 0, sizeof(vol_guid));
4441 if (!create_file_volume(m, root_ref, volume_flags, &vol_guid))
4442 return FALSE;
4443 ntfs_log_verbose("Creating $BadClus (mft record 8)\n");
4444 m = (MFT_RECORD*)(g_buf + 8 * g_vol->mft_record_size);
4445 /* FIXME: This should be IGNORE_CASE */
4446 /* Create a sparse named stream of size equal to the volume size. */
4447 err = add_attr_data_positioned(m, "$Bad", 4, CASE_SENSITIVE,
4448 const_cpu_to_le16(0), g_rl_bad, NULL,
4449 g_vol->nr_clusters * g_vol->cluster_size);
4450 if (!err) {
4451 err = add_attr_data(m, NULL, 0, CASE_SENSITIVE,
4452 const_cpu_to_le16(0), NULL, 0);
4453 }
4454 if (!err) {
4455 err = create_hardlink(g_index_block, root_ref, m,
4456 MK_LE_MREF(FILE_BadClus, FILE_BadClus),
4457 0LL, 0LL, FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM,
4458 0, 0, "$BadClus", FILE_NAME_WIN32_AND_DOS);
4459 }
4460 if (err < 0) {
4461 ntfs_log_error("Couldn't create $BadClus: %s\n",
4462 strerror(-err));
4463 return FALSE;
4464 }
4465 /* create $Secure (NTFS 3.0+) */
4466 ntfs_log_verbose("Creating $Secure (mft record 9)\n");
4467 m = (MFT_RECORD*)(g_buf + 9 * g_vol->mft_record_size);
4468 m->flags |= MFT_RECORD_IS_VIEW_INDEX;
4469 if (!err)
4470 err = create_hardlink(g_index_block, root_ref, m,
4471 MK_LE_MREF(9, 9), 0LL, 0LL,
4472 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM |
4473 FILE_ATTR_VIEW_INDEX_PRESENT, 0, 0,
4474 "$Secure", FILE_NAME_WIN32_AND_DOS);
4475 buf_sds = NULL;
4476 buf_sds_first_size = 0;
4477 if (!err) {
4478 int buf_sds_size;
4479
4480 buf_sds_first_size = 0xfc;
4481 buf_sds_size = 0x40000 + buf_sds_first_size;
4482 buf_sds = ntfs_calloc(buf_sds_size);
4483 if (!buf_sds)
4484 return FALSE;
4485 init_secure_sds(buf_sds);
4486 memcpy(buf_sds + 0x40000, buf_sds, buf_sds_first_size);
4487 err = add_attr_data(m, "$SDS", 4, CASE_SENSITIVE,
4488 const_cpu_to_le16(0), (u8*)buf_sds,
4489 buf_sds_size);
4490 }
4491 /* FIXME: This should be IGNORE_CASE */
4492 if (!err)
4493 err = add_attr_index_root(m, "$SDH", 4, CASE_SENSITIVE,
4494 AT_UNUSED, COLLATION_NTOFS_SECURITY_HASH,
4495 g_vol->indx_record_size);
4496 /* FIXME: This should be IGNORE_CASE */
4497 if (!err)
4498 err = add_attr_index_root(m, "$SII", 4, CASE_SENSITIVE,
4499 AT_UNUSED, COLLATION_NTOFS_ULONG,
4500 g_vol->indx_record_size);
4501 if (!err)
4502 err = initialize_secure(buf_sds, buf_sds_first_size, m);
4503 free(buf_sds);
4504 if (err < 0) {
4505 ntfs_log_error("Couldn't create $Secure: %s\n",
4506 strerror(-err));
4507 return FALSE;
4508 }
4509 ntfs_log_verbose("Creating $UpCase (mft record 0xa)\n");
4510 m = (MFT_RECORD*)(g_buf + 0xa * g_vol->mft_record_size);
4511 err = add_attr_data(m, NULL, 0, CASE_SENSITIVE, const_cpu_to_le16(0),
4512 (u8*)g_vol->upcase, g_vol->upcase_len << 1);
4513 if (!err)
4514 err = create_hardlink(g_index_block, root_ref, m,
4515 MK_LE_MREF(FILE_UpCase, FILE_UpCase),
4516 ((g_vol->upcase_len << 1) +
4517 g_vol->cluster_size - 1) &
4518 ~(g_vol->cluster_size - 1),
4519 g_vol->upcase_len << 1,
4520 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM, 0, 0,
4521 "$UpCase", FILE_NAME_WIN32_AND_DOS);
4522 if (err < 0) {
4523 ntfs_log_error("Couldn't create $UpCase: %s\n", strerror(-err));
4524 return FALSE;
4525 }
4526 ntfs_log_verbose("Creating $Extend (mft record 11)\n");
4527 /*
4528 * $Extend index must be resident. Otherwise, w2k3 will regard the
4529 * volume as corrupt. (ERSO)
4530 */
4531 m = (MFT_RECORD*)(g_buf + 11 * g_vol->mft_record_size);
4532 m->flags |= MFT_RECORD_IS_DIRECTORY;
4533 if (!err)
4534 err = create_hardlink(g_index_block, root_ref, m,
4535 MK_LE_MREF(11, 11), 0LL, 0LL,
4536 FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM |
4537 FILE_ATTR_I30_INDEX_PRESENT, 0, 0,
4538 "$Extend", FILE_NAME_WIN32_AND_DOS);
4539 /* FIXME: This should be IGNORE_CASE */
4540 if (!err)
4541 err = add_attr_index_root(m, "$I30", 4, CASE_SENSITIVE,
4542 AT_FILE_NAME, COLLATION_FILE_NAME,
4543 g_vol->indx_record_size);
4544 if (err < 0) {
4545 ntfs_log_error("Couldn't create $Extend: %s\n",
4546 strerror(-err));
4547 return FALSE;
4548 }
4549 /* NTFS reserved system files (mft records 0xc-0xf) */
4550 for (i = 0xc; i < 0x10; i++) {
4551 ntfs_log_verbose("Creating system file (mft record 0x%x)\n", i);
4552 m = (MFT_RECORD*)(g_buf + i * g_vol->mft_record_size);
4553 err = add_attr_data(m, NULL, 0, CASE_SENSITIVE,
4554 const_cpu_to_le16(0), NULL, 0);
4555 if (!err) {
4556 init_system_file_sd(i, &sd, &j);
4557 err = add_attr_sd(m, sd, j);
4558 }
4559 if (err < 0) {
4560 ntfs_log_error("Couldn't create system file %i (0x%x): "
4561 "%s\n", i, i, strerror(-err));
4562 return FALSE;
4563 }
4564 }
4565 /* create systemfiles for ntfs volumes (3.1) */
4566 /* starting with file 24 (ignoring file 16-23) */
4567 extend_flags = FILE_ATTR_HIDDEN | FILE_ATTR_SYSTEM |
4568 FILE_ATTR_ARCHIVE | FILE_ATTR_VIEW_INDEX_PRESENT;
4569 ntfs_log_verbose("Creating $Quota (mft record 24)\n");
4570 m = (MFT_RECORD*)(g_buf + 24 * g_vol->mft_record_size);
4571 m->flags |= MFT_RECORD_IS_4;
4572 m->flags |= MFT_RECORD_IS_VIEW_INDEX;
4573 if (!err)
4574 err = create_hardlink_res((MFT_RECORD*)(g_buf +
4575 11 * g_vol->mft_record_size), extend_ref, m,
4576 MK_LE_MREF(24, 1), 0LL, 0LL, extend_flags,
4577 0, 0, "$Quota", FILE_NAME_WIN32_AND_DOS);
4578 /* FIXME: This should be IGNORE_CASE */
4579 if (!err)
4580 err = add_attr_index_root(m, "$Q", 2, CASE_SENSITIVE, AT_UNUSED,
4581 COLLATION_NTOFS_ULONG, g_vol->indx_record_size);
4582 /* FIXME: This should be IGNORE_CASE */
4583 if (!err)
4584 err = add_attr_index_root(m, "$O", 2, CASE_SENSITIVE, AT_UNUSED,
4585 COLLATION_NTOFS_SID, g_vol->indx_record_size);
4586 if (!err)
4587 err = initialize_quota(m);
4588 if (err < 0) {
4589 ntfs_log_error("Couldn't create $Quota: %s\n", strerror(-err));
4590 return FALSE;
4591 }
4592 ntfs_log_verbose("Creating $ObjId (mft record 25)\n");
4593 m = (MFT_RECORD*)(g_buf + 25 * g_vol->mft_record_size);
4594 m->flags |= MFT_RECORD_IS_4;
4595 m->flags |= MFT_RECORD_IS_VIEW_INDEX;
4596 if (!err)
4597 err = create_hardlink_res((MFT_RECORD*)(g_buf +
4598 11 * g_vol->mft_record_size), extend_ref,
4599 m, MK_LE_MREF(25, 1), 0LL, 0LL,
4600 extend_flags, 0, 0, "$ObjId",
4601 FILE_NAME_WIN32_AND_DOS);
4602
4603 /* FIXME: This should be IGNORE_CASE */
4604 if (!err)
4605 err = add_attr_index_root(m, "$O", 2, CASE_SENSITIVE, AT_UNUSED,
4606 COLLATION_NTOFS_ULONGS,
4607 g_vol->indx_record_size);
4608 if (!err && opts.with_uuid)
4609 err = index_obj_id_insert(m, &vol_guid,
4610 MK_LE_MREF(FILE_Volume, FILE_Volume));
4611 if (err < 0) {
4612 ntfs_log_error("Couldn't create $ObjId: %s\n",
4613 strerror(-err));
4614 return FALSE;
4615 }
4616 ntfs_log_verbose("Creating $Reparse (mft record 26)\n");
4617 m = (MFT_RECORD*)(g_buf + 26 * g_vol->mft_record_size);
4618 m->flags |= MFT_RECORD_IS_4;
4619 m->flags |= MFT_RECORD_IS_VIEW_INDEX;
4620 if (!err)
4621 err = create_hardlink_res((MFT_RECORD*)(g_buf +
4622 11 * g_vol->mft_record_size),
4623 extend_ref, m, MK_LE_MREF(26, 1),
4624 0LL, 0LL, extend_flags, 0, 0,
4625 "$Reparse", FILE_NAME_WIN32_AND_DOS);
4626 /* FIXME: This should be IGNORE_CASE */
4627 if (!err)
4628 err = add_attr_index_root(m, "$R", 2, CASE_SENSITIVE, AT_UNUSED,
4629 COLLATION_NTOFS_ULONGS, g_vol->indx_record_size);
4630 if (err < 0) {
4631 ntfs_log_error("Couldn't create $Reparse: %s\n",
4632 strerror(-err));
4633 return FALSE;
4634 }
4635 return TRUE;
4636 }
4637
4638 /**
4639 * mkntfs_redirect
4640 */
mkntfs_redirect(struct mkntfs_options * opts2)4641 static int mkntfs_redirect(struct mkntfs_options *opts2)
4642 {
4643 u64 upcase_crc;
4644 int result = 1;
4645 ntfs_attr_search_ctx *ctx = NULL;
4646 long long lw, pos;
4647 ATTR_RECORD *a;
4648 MFT_RECORD *m;
4649 int i, err;
4650
4651 if (!opts2) {
4652 ntfs_log_error("Internal error: invalid parameters to mkntfs_options.\n");
4653 goto done;
4654 }
4655 /* Initialize the random number generator with the current time. */
4656 srandom(le64_to_cpu(mkntfs_time())/10000000);
4657 /* Allocate and initialize ntfs_volume structure g_vol. */
4658 g_vol = ntfs_volume_alloc();
4659 if (!g_vol) {
4660 ntfs_log_perror("Could not create volume");
4661 goto done;
4662 }
4663 /* Create NTFS 3.1 (Windows XP/Vista) volumes. */
4664 g_vol->major_ver = 3;
4665 g_vol->minor_ver = 1;
4666 /* Transfer some options to the volume. */
4667 if (opts.label) {
4668 g_vol->vol_name = strdup(opts.label);
4669 if (!g_vol->vol_name) {
4670 ntfs_log_perror("Could not copy volume name");
4671 goto done;
4672 }
4673 }
4674 if (opts.cluster_size >= 0)
4675 g_vol->cluster_size = opts.cluster_size;
4676 /* Length is in unicode characters. */
4677 g_vol->upcase_len = ntfs_upcase_build_default(&g_vol->upcase);
4678 /* Since Windows 8, there is a $Info stream in $UpCase */
4679 g_upcaseinfo =
4680 (struct UPCASEINFO*)ntfs_malloc(sizeof(struct UPCASEINFO));
4681 if (!g_vol->upcase_len || !g_upcaseinfo)
4682 goto done;
4683 /* If the CRC is correct, chkdsk does not warn about obsolete table */
4684 crc64(0,(byte*)NULL,0); /* initialize the crc computation */
4685 upcase_crc = crc64(0,(byte*)g_vol->upcase,
4686 g_vol->upcase_len * sizeof(ntfschar));
4687 /* keep the version fields as zero */
4688 memset(g_upcaseinfo, 0, sizeof(struct UPCASEINFO));
4689 g_upcaseinfo->len = const_cpu_to_le32(sizeof(struct UPCASEINFO));
4690 g_upcaseinfo->crc = cpu_to_le64(upcase_crc);
4691 g_vol->attrdef = ntfs_malloc(sizeof(attrdef_ntfs3x_array));
4692 if (!g_vol->attrdef) {
4693 ntfs_log_perror("Could not create attrdef structure");
4694 goto done;
4695 }
4696 memcpy(g_vol->attrdef, attrdef_ntfs3x_array,
4697 sizeof(attrdef_ntfs3x_array));
4698 g_vol->attrdef_len = sizeof(attrdef_ntfs3x_array);
4699 /* Open the partition. */
4700 if (!mkntfs_open_partition(g_vol))
4701 goto done;
4702 /*
4703 * Decide on the sector size, cluster size, mft record and index record
4704 * sizes as well as the number of sectors/tracks/heads/size, etc.
4705 */
4706 if (!mkntfs_override_vol_params(g_vol))
4707 goto done;
4708 /* Initialize $Bitmap and $MFT/$BITMAP related stuff. */
4709 if (!mkntfs_initialize_bitmaps())
4710 goto done;
4711 /* Initialize MFT & set g_logfile_lcn. */
4712 if (!mkntfs_initialize_rl_mft())
4713 goto done;
4714 /* Initialize $LogFile. */
4715 if (!mkntfs_initialize_rl_logfile())
4716 goto done;
4717 /* Initialize $Boot. */
4718 if (!mkntfs_initialize_rl_boot())
4719 goto done;
4720 /* Allocate a buffer large enough to hold the mft. */
4721 g_buf = ntfs_calloc(g_mft_size);
4722 if (!g_buf)
4723 goto done;
4724 /* Create runlist for $BadClus, $DATA named stream $Bad. */
4725 if (!mkntfs_initialize_rl_bad())
4726 goto done;
4727 /* If not quick format, fill the device with 0s. */
4728 if (!opts.quick_format) {
4729 if (!mkntfs_fill_device_with_zeroes())
4730 goto done;
4731 }
4732 /* Create NTFS volume structures. */
4733 if (!mkntfs_create_root_structures())
4734 goto done;
4735 /*
4736 * - Do not step onto bad blocks!!!
4737 * - If any bad blocks were specified or found, modify $BadClus,
4738 * allocating the bad clusters in $Bitmap.
4739 * - C&w bootsector backup bootsector (backup in last sector of the
4740 * partition).
4741 * - If NTFS 3.0+, c&w $Secure file and $Extend directory with the
4742 * corresponding special files in it, i.e. $ObjId, $Quota, $Reparse,
4743 * and $UsnJrnl. And others? Or not all necessary?
4744 * - RE: Populate $root with the system files (and $Extend directory if
4745 * applicable). Possibly should move this as far to the top as
4746 * possible and update during each subsequent c&w of each system file.
4747 */
4748 ntfs_log_verbose("Syncing root directory index record.\n");
4749 if (!mkntfs_sync_index_record(g_index_block, (MFT_RECORD*)(g_buf + 5 *
4750 g_vol->mft_record_size), NTFS_INDEX_I30, 4))
4751 goto done;
4752
4753 ntfs_log_verbose("Syncing $Bitmap.\n");
4754 m = (MFT_RECORD*)(g_buf + 6 * g_vol->mft_record_size);
4755
4756 ctx = ntfs_attr_get_search_ctx(NULL, m);
4757 if (!ctx) {
4758 ntfs_log_perror("Could not create an attribute search context");
4759 goto done;
4760 }
4761
4762 if (mkntfs_attr_lookup(AT_DATA, AT_UNNAMED, 0, CASE_SENSITIVE,
4763 0, NULL, 0, ctx)) {
4764 ntfs_log_error("BUG: $DATA attribute not found.\n");
4765 goto done;
4766 }
4767
4768 a = ctx->attr;
4769 if (a->non_resident) {
4770 runlist *rl = ntfs_mapping_pairs_decompress(g_vol, a, NULL);
4771 if (!rl) {
4772 ntfs_log_error("ntfs_mapping_pairs_decompress() failed\n");
4773 goto done;
4774 }
4775 lw = ntfs_rlwrite(g_vol->dev, rl, (const u8*)NULL,
4776 g_lcn_bitmap_byte_size, NULL, WRITE_BITMAP);
4777 err = errno;
4778 free(rl);
4779 if (lw != g_lcn_bitmap_byte_size) {
4780 ntfs_log_error("ntfs_rlwrite: %s\n", lw == -1 ?
4781 strerror(err) : "unknown error");
4782 goto done;
4783 }
4784 } else {
4785 /* Error : the bitmap must be created non resident */
4786 ntfs_log_error("Error : the global bitmap is resident\n");
4787 goto done;
4788 }
4789
4790 /*
4791 * No need to sync $MFT/$BITMAP as that has never been modified since
4792 * its creation.
4793 */
4794 ntfs_log_verbose("Syncing $MFT.\n");
4795 pos = g_mft_lcn * g_vol->cluster_size;
4796 lw = 1;
4797 for (i = 0; i < g_mft_size / (s32)g_vol->mft_record_size; i++) {
4798 if (!opts.no_action)
4799 lw = ntfs_mst_pwrite(g_vol->dev, pos, 1, g_vol->mft_record_size, g_buf + i * g_vol->mft_record_size);
4800 if (lw != 1) {
4801 ntfs_log_error("ntfs_mst_pwrite: %s\n", lw == -1 ?
4802 strerror(errno) : "unknown error");
4803 goto done;
4804 }
4805 pos += g_vol->mft_record_size;
4806 }
4807 ntfs_log_verbose("Updating $MFTMirr.\n");
4808 pos = g_mftmirr_lcn * g_vol->cluster_size;
4809 lw = 1;
4810 for (i = 0; i < g_rl_mftmirr[0].length * g_vol->cluster_size / g_vol->mft_record_size; i++) {
4811 m = (MFT_RECORD*)(g_buf + i * g_vol->mft_record_size);
4812 /*
4813 * Decrement the usn by one, so it becomes the same as the one
4814 * in $MFT once it is mst protected. - This is as we need the
4815 * $MFTMirr to have the exact same byte by byte content as
4816 * $MFT, rather than just equivalent meaning content.
4817 */
4818 if (ntfs_mft_usn_dec(m)) {
4819 ntfs_log_error("ntfs_mft_usn_dec");
4820 goto done;
4821 }
4822 if (!opts.no_action)
4823 lw = ntfs_mst_pwrite(g_vol->dev, pos, 1, g_vol->mft_record_size, g_buf + i * g_vol->mft_record_size);
4824 if (lw != 1) {
4825 ntfs_log_error("ntfs_mst_pwrite: %s\n", lw == -1 ?
4826 strerror(errno) : "unknown error");
4827 goto done;
4828 }
4829 pos += g_vol->mft_record_size;
4830 }
4831 ntfs_log_verbose("Syncing device.\n");
4832 if (g_vol->dev->d_ops->sync(g_vol->dev)) {
4833 ntfs_log_error("Syncing device. FAILED");
4834 goto done;
4835 }
4836 ntfs_log_quiet("mkntfs completed successfully. Have a nice day.\n");
4837 result = 0;
4838 done:
4839 ntfs_attr_put_search_ctx(ctx);
4840 mkntfs_cleanup(); /* Device is unlocked and closed here */
4841 return result;
4842 }
4843
4844 /**
4845 * mkntfs_main
4846 */
mkntfs_main(const char * devpath,const char * label)4847 int mkntfs_main(const char *devpath, const char *label)
4848 {
4849 //reset global variables
4850 g_buf = NULL;
4851 g_mft_bitmap_byte_size = 0;
4852 g_mft_bitmap = NULL;
4853 g_lcn_bitmap_byte_size = 0;
4854 g_dynamic_buf_size = 0;
4855 g_dynamic_buf = NULL;
4856 g_rl_mft = NULL;
4857 g_rl_mft_bmp = NULL;
4858 g_rl_mftmirr = NULL;
4859 g_rl_logfile = NULL;
4860 g_rl_boot = NULL;
4861 g_rl_bad = NULL;
4862 g_index_block = NULL;
4863 g_vol = NULL;
4864 g_mft_size = 0;
4865 g_mft_lcn = 0;
4866 g_mftmirr_lcn = 0;
4867 g_logfile_lcn = 0;
4868 g_logfile_size = 0;
4869 g_mft_zone_end = 0;
4870 g_num_bad_blocks = 0;
4871 g_bad_blocks = NULL;
4872 g_allocation = NULL;
4873
4874 //init default options
4875 mkntfs_init_options(&opts);
4876
4877 opts.dev_name = devpath;
4878 opts.label = label;
4879
4880 opts.force = TRUE;
4881 opts.quick_format = TRUE;
4882
4883 return mkntfs_redirect(&opts);
4884 }
4885