misc/filefrag.c

   1 /*
   2  * filefrag.c -- report if a particular file is fragmented
   3  *
   4  * Copyright 2003 by Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 #include "config.h"
  13 #ifndef __linux__
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17
  18 int main(void) {
  19         fputs("This program is only supported on Linux!\n", stderr);
  20         exit(EXIT_FAILURE);
  21 }
  22 #else
  23 #ifndef _LARGEFILE_SOURCE
  24 #define _LARGEFILE_SOURCE
  25 #endif
  26 #ifndef _LARGEFILE64_SOURCE
  27 #define _LARGEFILE64_SOURCE
  28 #endif
  29
  30
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <unistd.h>
  34 #include <string.h>
  35 #include <time.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #ifdef HAVE_GETOPT_H
  39 #include <getopt.h>
  40 #else
  41 extern char *optarg;
  42 extern int optind;
  43 #endif
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <sys/vfs.h>
  47 #include <sys/ioctl.h>
  48 #ifdef HAVE_LINUX_FD_H
  49 #include <linux/fd.h>
  50 #endif
  51 #include <ext2fs/ext2fs.h>
  52 #include <ext2fs/ext2_types.h>
  53 #include <ext2fs/fiemap.h>
  54 #include "../version.h"
  55
  56 int verbose = 0;
  57 unsigned int blocksize; /* Use specified blocksize (default 1kB) */
  58 int sync_file = 0;      /* fsync file before getting the mapping */
  59 int precache_file = 0;  /* precache the file before getting the mapping */
  60 int xattr_map = 0;      /* get xattr mapping */
  61 int force_bmap;         /* force use of FIBMAP instead of FIEMAP */
  62 int force_extent;       /* print output in extent format always */
  63 int use_extent_cache;   /* Use extent cache */
  64 int logical_width = 8;
  65 int physical_width = 10;
  66 const char *ext_fmt = "%4d: %*llu..%*llu: %*llu..%*llu: %6llu: %s\n";
  67 const char *hex_fmt = "%4d: %*llx..%*llx: %*llx..%*llx: %6llx: %s\n";
  68
  69 #define FILEFRAG_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR)
  70
  71 #define FIBMAP          _IO(0x00, 1)    /* bmap access */
  72 #define FIGETBSZ        _IO(0x00, 2)    /* get the block size used for bmap */
  73
  74 #define LUSTRE_SUPER_MAGIC 0x0BD00BD0
  75
  76 #define EXT4_EXTENTS_FL                 0x00080000 /* Inode uses extents */
  77 #define EXT3_IOC_GETFLAGS               _IOR('f', 1, long)
  78
  79 static int ulong_log2(unsigned long arg)
  80 {
  81         int     l = 0;
  82
  83         arg >>= 1;
  84         while (arg) {
  85                 l++;
  86                 arg >>= 1;
  87         }
  88         return l;
  89 }
  90
  91 static int ulong_log10(unsigned long long arg)
  92 {
  93         int     l = 0;
  94
  95         arg = arg / 10;
  96         while (arg) {
  97                 l++;
  98                 arg = arg / 10;
  99         }
 100         return l;
 101 }
 102
 103 static unsigned int div_ceil(unsigned int a, unsigned int b)
 104 {
 105         if (!a)
 106                 return 0;
 107         return ((a - 1) / b) + 1;
 108 }
 109
 110 static int get_bmap(int fd, unsigned long block, unsigned long *phy_blk)
 111 {
 112         int     ret;
 113         unsigned int b;
 114
 115         b = block;
 116         ret = ioctl(fd, FIBMAP, &b); /* FIBMAP takes pointer to integer */
 117         if (ret < 0)
 118                 return -errno;
 119         *phy_blk = b;
 120
 121         return ret;
 122 }
 123
 124 static void print_extent_header(void)
 125 {
 126         printf(" ext: %*s %*s length: %*s flags:\n",
 127                logical_width * 2 + 3,
 128                "logical_offset:",
 129                physical_width * 2 + 3, "physical_offset:",
 130                physical_width + 1,
 131                "expected:");
 132 }
 133
 134 static void print_flag(__u32 *flags, __u32 mask, char *buf, const char *name)
 135 {
 136         char hex[sizeof(mask) * 2 + 4]; /* 2 chars/byte + 0x, + NUL */
 137
 138         if ((*flags & mask) == 0)
 139                 return;
 140
 141         if (name == NULL) {
 142                 sprintf(hex, "%#04x,", mask);
 143                 name = hex;
 144         }
 145         strcat(buf, name);
 146         *flags &= ~mask;
 147 }
 148
 149 static void print_flags(__u32 fe_flags, char *flags, int len, int print_unknown)
 150 {
 151         __u32 mask;
 152
 153         print_flag(&fe_flags, FIEMAP_EXTENT_LAST, flags, "last,");
 154         print_flag(&fe_flags, FIEMAP_EXTENT_UNKNOWN, flags, "unknown_loc,");
 155         print_flag(&fe_flags, FIEMAP_EXTENT_DELALLOC, flags, "delalloc,");
 156         print_flag(&fe_flags, FIEMAP_EXTENT_ENCODED, flags, "encoded,");
 157         print_flag(&fe_flags, FIEMAP_EXTENT_DATA_ENCRYPTED, flags,"encrypted,");
 158         print_flag(&fe_flags, FIEMAP_EXTENT_NOT_ALIGNED, flags, "not_aligned,");
 159         print_flag(&fe_flags, FIEMAP_EXTENT_DATA_INLINE, flags, "inline,");
 160         print_flag(&fe_flags, FIEMAP_EXTENT_DATA_TAIL, flags, "tail_packed,");
 161         print_flag(&fe_flags, FIEMAP_EXTENT_UNWRITTEN, flags, "unwritten,");
 162         print_flag(&fe_flags, FIEMAP_EXTENT_MERGED, flags, "merged,");
 163         print_flag(&fe_flags, FIEMAP_EXTENT_SHARED, flags, "shared,");
 164         print_flag(&fe_flags, EXT4_FIEMAP_EXTENT_HOLE, flags, "hole,");
 165
 166         if (!print_unknown)
 167                 goto out;
 168
 169         /* print any unknown flags as hex values */
 170         for (mask = 1; fe_flags != 0 && mask != 0; mask <<= 1)
 171                 print_flag(&fe_flags, mask, flags, NULL);
 172 out:
 173         /* Remove trailing comma, if any */
 174         if (flags[0])
 175                 flags[strnlen(flags, len) - 1] = '\0';
 176
 177 }
 178
 179 static void print_extent_info(struct fiemap_extent *fm_extent, int cur_ex,
 180                               unsigned long long expected, int blk_shift,
 181                               ext2fs_struct_stat *st)
 182 {
 183         unsigned long long physical_blk;
 184         unsigned long long logical_blk;
 185         unsigned long long ext_len;
 186         unsigned long long ext_blks;
 187         unsigned long long ext_blks_phys;
 188         char flags[256] = "";
 189
 190         /* For inline data all offsets should be in bytes, not blocks */
 191         if (fm_extent->fe_flags & FIEMAP_EXTENT_DATA_INLINE)
 192                 blk_shift = 0;
 193
 194         ext_len = fm_extent->fe_length >> blk_shift;
 195         ext_blks = (fm_extent->fe_length - 1) >> blk_shift;
 196         logical_blk = fm_extent->fe_logical >> blk_shift;
 197         if (fm_extent->fe_flags & FIEMAP_EXTENT_UNKNOWN) {
 198                 physical_blk = 0;
 199         } else {
 200                 physical_blk = fm_extent->fe_physical >> blk_shift;
 201         }
 202
 203         if (expected &&
 204             !(fm_extent->fe_flags & FIEMAP_EXTENT_UNKNOWN) &&
 205             !(fm_extent->fe_flags & EXT4_FIEMAP_EXTENT_HOLE))
 206                 sprintf(flags, ext_fmt == hex_fmt ? "%*llx: " : "%*llu: ",
 207                         physical_width, expected >> blk_shift);
 208         else
 209                 sprintf(flags, "%.*s  ", physical_width, "                   ");
 210
 211         print_flags(fm_extent->fe_flags, flags, sizeof(flags), 1);
 212
 213         if (fm_extent->fe_logical + fm_extent->fe_length >=
 214             (unsigned long long)st->st_size)
 215                 strcat(flags, flags[0] ? ",eof" : "eof");
 216
 217         if ((fm_extent->fe_flags & FIEMAP_EXTENT_UNKNOWN) ||
 218             (fm_extent->fe_flags & EXT4_FIEMAP_EXTENT_HOLE)) {
 219                 ext_len = 0;
 220                 ext_blks_phys = 0;
 221         } else
 222                 ext_blks_phys = ext_blks;
 223
 224         printf(ext_fmt, cur_ex, logical_width, logical_blk,
 225                logical_width, logical_blk + ext_blks,
 226                physical_width, physical_blk,
 227                physical_width, physical_blk + ext_blks_phys,
 228                ext_len, flags);
 229 }
 230
 231 static int filefrag_fiemap(int fd, int blk_shift, int *num_extents,
 232                            ext2fs_struct_stat *st)
 233 {
 234         __u64 buf[2048];        /* __u64 for proper field alignment */
 235         struct fiemap *fiemap = (struct fiemap *)buf;
 236         struct fiemap_extent *fm_ext = &fiemap->fm_extents[0];
 237         struct fiemap_extent fm_last;
 238         int count = (sizeof(buf) - sizeof(*fiemap)) /
 239                         sizeof(struct fiemap_extent);
 240         unsigned long long expected = 0;
 241         unsigned long long expected_dense = 0;
 242         unsigned long flags = 0;
 243         unsigned int i;
 244         unsigned long cmd = FS_IOC_FIEMAP;
 245         int fiemap_header_printed = 0;
 246         int tot_extents = 0, n = 0;
 247         int last = 0;
 248         int rc;
 249
 250         memset(fiemap, 0, sizeof(struct fiemap));
 251         memset(&fm_last, 0, sizeof(fm_last));
 252
 253         if (sync_file)
 254                 flags |= FIEMAP_FLAG_SYNC;
 255
 256         if (precache_file)
 257                 flags |= FIEMAP_FLAG_CACHE;
 258
 259         if (xattr_map)
 260                 flags |= FIEMAP_FLAG_XATTR;
 261
 262         if (use_extent_cache)
 263                 cmd = EXT4_IOC_GET_ES_CACHE;
 264
 265         do {
 266                 fiemap->fm_length = ~0ULL;
 267                 fiemap->fm_flags = flags;
 268                 fiemap->fm_extent_count = count;
 269                 rc = ioctl(fd, cmd, (unsigned long) fiemap);
 270                 if (rc < 0) {
 271                         static int fiemap_incompat_printed;
 272
 273                         rc = -errno;
 274                         if (rc == -EBADR && !fiemap_incompat_printed) {
 275                                 fprintf(stderr, "FIEMAP failed with unknown "
 276                                                 "flags %x\n",
 277                                        fiemap->fm_flags);
 278                                 fiemap_incompat_printed = 1;
 279                         }
 280                         return rc;
 281                 }
 282
 283                 /* If 0 extents are returned, then more ioctls are not needed */
 284                 if (fiemap->fm_mapped_extents == 0)
 285                         break;
 286
 287                 if (verbose && !fiemap_header_printed) {
 288                         print_extent_header();
 289                         fiemap_header_printed = 1;
 290                 }
 291
 292                 for (i = 0; i < fiemap->fm_mapped_extents; i++) {
 293                         expected_dense = fm_last.fe_physical +
 294                                          fm_last.fe_length;
 295                         expected = fm_last.fe_physical +
 296                                    fm_ext[i].fe_logical - fm_last.fe_logical;
 297                         if (fm_ext[i].fe_logical != 0 &&
 298                             fm_ext[i].fe_physical != expected &&
 299                             fm_ext[i].fe_physical != expected_dense) {
 300                                 tot_extents++;
 301                         } else {
 302                                 expected = 0;
 303                                 if (!tot_extents)
 304                                         tot_extents = 1;
 305                         }
 306                         if (verbose)
 307                                 print_extent_info(&fm_ext[i], n, expected,
 308                                                   blk_shift, st);
 309                         if (fm_ext[i].fe_flags & FIEMAP_EXTENT_LAST)
 310                                 last = 1;
 311                         fm_last = fm_ext[i];
 312                         n++;
 313                 }
 314
 315                 fiemap->fm_start = (fm_ext[i - 1].fe_logical +
 316                                     fm_ext[i - 1].fe_length);
 317         } while (last == 0);
 318
 319         *num_extents = tot_extents;
 320
 321         return 0;
 322 }
 323
 324 #define EXT2_DIRECT     12
 325
 326 static int filefrag_fibmap(int fd, int blk_shift, int *num_extents,
 327                            ext2fs_struct_stat *st,
 328                            unsigned long numblocks, int is_ext2)
 329 {
 330         struct fiemap_extent    fm_ext, fm_last;
 331         unsigned long           i, last_block;
 332         unsigned long long      logical, expected = 0;
 333                                 /* Blocks per indirect block */
 334         const long              bpib = st->st_blksize / 4;
 335         int                     count;
 336
 337         memset(&fm_ext, 0, sizeof(fm_ext));
 338         memset(&fm_last, 0, sizeof(fm_last));
 339         if (force_extent) {
 340                 fm_ext.fe_flags = FIEMAP_EXTENT_MERGED;
 341         }
 342
 343         if (sync_file && fsync(fd) != 0)
 344                 return -errno;
 345
 346         for (i = 0, logical = 0, *num_extents = 0, count = last_block = 0;
 347              i < numblocks;
 348              i++, logical += st->st_blksize) {
 349                 unsigned long block = 0;
 350                 int rc;
 351
 352                 if (is_ext2 && last_block) {
 353                         if (((i - EXT2_DIRECT) % bpib) == 0)
 354                                 last_block++;
 355                         if (((i - EXT2_DIRECT - bpib) % (bpib * bpib)) == 0)
 356                                 last_block++;
 357                         if (((i - EXT2_DIRECT - bpib - bpib * bpib) %
 358                              (((unsigned long long)bpib) * bpib * bpib)) == 0)
 359                                 last_block++;
 360                 }
 361                 rc = get_bmap(fd, i, &block);
 362                 if (rc < 0)
 363                         return rc;
 364                 if (block == 0)
 365                         continue;
 366
 367                 if (*num_extents == 0 || block != last_block + 1 ||
 368                     fm_ext.fe_logical + fm_ext.fe_length != logical) {
 369                         /*
 370                          * This is the start of a new extent; figure out where
 371                          * we expected it to be and report the extent.
 372                          */
 373                         if (*num_extents != 0 && fm_last.fe_length) {
 374                                 expected = fm_last.fe_physical +
 375                                         (fm_ext.fe_logical - fm_last.fe_logical);
 376                                 if (expected == fm_ext.fe_physical)
 377                                         expected = 0;
 378                         }
 379                         if (force_extent && *num_extents == 0)
 380                                 print_extent_header();
 381                         if (force_extent && *num_extents != 0) {
 382                                 print_extent_info(&fm_ext, *num_extents - 1,
 383                                                   expected, blk_shift, st);
 384                         }
 385                         if (verbose && expected != 0) {
 386                                 printf("Discontinuity: Block %llu is at %llu "
 387                                        "(was %llu)\n",
 388                                        (unsigned long long) (fm_ext.fe_logical / st->st_blksize),
 389                                        (unsigned long long) (fm_ext.fe_physical / st->st_blksize),
 390                                        (unsigned long long) (expected / st->st_blksize));
 391                         }
 392                         /* create the new extent */
 393                         fm_last = fm_ext;
 394                         (*num_extents)++;
 395                         fm_ext.fe_physical = block * st->st_blksize;
 396                         fm_ext.fe_logical = logical;
 397                         fm_ext.fe_length = 0;
 398                 }
 399                 fm_ext.fe_length += st->st_blksize;
 400                 last_block = block;
 401         }
 402         if (force_extent && *num_extents != 0) {
 403                 if (fm_last.fe_length) {
 404                         expected = fm_last.fe_physical +
 405                                    (fm_ext.fe_logical - fm_last.fe_logical);
 406                         if (expected == fm_ext.fe_physical)
 407                                 expected = 0;
 408                 }
 409                 print_extent_info(&fm_ext, *num_extents - 1, expected,
 410                                   blk_shift, st);
 411         }
 412
 413         return count;
 414 }
 415
 416 static int frag_report(const char *filename)
 417 {
 418         static struct statfs fsinfo;
 419         static unsigned int blksize;
 420         ext2fs_struct_stat st;
 421         int             blk_shift;
 422         long            fd;
 423         unsigned long long      numblocks;
 424         int             data_blocks_per_cyl = 1;
 425         int             num_extents = 1, expected = ~0;
 426         int             is_ext2 = 0;
 427         static dev_t    last_device;
 428         int             width;
 429         int             rc = 0;
 430
 431 #if defined(HAVE_OPEN64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
 432         fd = open64(filename, O_RDONLY);
 433 #else
 434         fd = open(filename, O_RDONLY);
 435 #endif
 436         if (fd < 0) {
 437                 rc = -errno;
 438                 perror("open");
 439                 return rc;
 440         }
 441
 442 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
 443         if (fstat64(fd, &st) < 0) {
 444 #else
 445         if (fstat(fd, &st) < 0) {
 446 #endif
 447                 rc = -errno;
 448                 perror("stat");
 449                 goto out_close;
 450         }
 451
 452         if ((last_device != st.st_dev) || !st.st_dev) {
 453                 if (fstatfs(fd, &fsinfo) < 0) {
 454                         rc = -errno;
 455                         perror("fstatfs");
 456                         goto out_close;
 457                 }
 458                 if ((ioctl(fd, FIGETBSZ, &blksize) < 0) || !blksize)
 459                         blksize = fsinfo.f_bsize;
 460                 if (verbose)
 461                         printf("Filesystem type is: %lx\n",
 462                                (unsigned long)fsinfo.f_type);
 463         }
 464         st.st_blksize = blksize;
 465         if (fsinfo.f_type == 0xef51 || fsinfo.f_type == 0xef52 ||
 466             fsinfo.f_type == 0xef53) {
 467                 unsigned int    flags;
 468
 469                 if (ioctl(fd, EXT3_IOC_GETFLAGS, &flags) == 0 &&
 470                     !(flags & EXT4_EXTENTS_FL))
 471                         is_ext2 = 1;
 472         }
 473
 474         if (is_ext2) {
 475                 long cylgroups = div_ceil(fsinfo.f_blocks, blksize * 8);
 476
 477                 if (verbose && last_device != st.st_dev)
 478                         printf("Filesystem cylinder groups approximately %ld\n",
 479                                cylgroups);
 480
 481                 data_blocks_per_cyl = blksize * 8 -
 482                                         (fsinfo.f_files / 8 / cylgroups) - 3;
 483         }
 484         last_device = st.st_dev;
 485
 486         width = ulong_log10(fsinfo.f_blocks);
 487         if (width > physical_width)
 488                 physical_width = width;
 489
 490         numblocks = (st.st_size + blksize - 1) / blksize;
 491         if (blocksize != 0)
 492                 blk_shift = ulong_log2(blocksize);
 493         else
 494                 blk_shift = ulong_log2(blksize);
 495
 496         if (use_extent_cache)
 497                 width = 10;
 498         else
 499                 width = ulong_log10(numblocks);
 500         if (width > logical_width)
 501                 logical_width = width;
 502         if (verbose) {
 503                 __u32 state;
 504
 505                 printf("File size of %s is %llu (%llu block%s of %d bytes)",
 506                        filename, (unsigned long long) st.st_size,
 507                        (unsigned long long) (numblocks * blksize >> blk_shift),
 508                        numblocks == 1 ? "" : "s", 1 << blk_shift);
 509                 if (use_extent_cache &&
 510                     ioctl(fd, EXT4_IOC_GETSTATE, &state) == 0 &&
 511                     (state & EXT4_STATE_FLAG_EXT_PRECACHED))
 512                         fputs(" -- pre-cached", stdout);
 513                 fputc('\n', stdout);
 514         }
 515
 516         if (!force_bmap) {
 517                 rc = filefrag_fiemap(fd, blk_shift, &num_extents, &st);
 518                 expected = 0;
 519                 if (rc < 0 &&
 520                     (use_extent_cache || precache_file || xattr_map)) {
 521                         if (rc != -EBADR)
 522                                 fprintf(stderr, "%s: %s: %s\n ",
 523                                         filename,
 524                                         use_extent_cache ?
 525                                         "EXT4_IOC_GET_ES_CACHE" :
 526                                         "FS_IOC_FIEMAP", strerror(-rc));
 527                         goto out_close;
 528                 }
 529         }
 530
 531         if (force_bmap || rc < 0) { /* FIEMAP failed, try FIBMAP instead */
 532                 expected = filefrag_fibmap(fd, blk_shift, &num_extents,
 533                                            &st, numblocks, is_ext2);
 534                 if (expected < 0) {
 535                         if (expected == -EINVAL || expected == -ENOTTY) {
 536                                 fprintf(stderr, "%s: FIBMAP%s unsupported\n",
 537                                         filename, force_bmap ? "" : "/FIEMAP");
 538                         } else if (expected == -EPERM) {
 539                                 fprintf(stderr,
 540                                         "%s: FIBMAP requires root privileges\n",
 541                                         filename);
 542                         } else {
 543                                 fprintf(stderr, "%s: FIBMAP error: %s",
 544                                         filename, strerror(expected));
 545                         }
 546                         rc = expected;
 547                         goto out_close;
 548                 } else {
 549                         rc = 0;
 550                 }
 551                 expected = expected / data_blocks_per_cyl + 1;
 552         }
 553
 554         if (num_extents == 1)
 555                 printf("%s: 1 extent found", filename);
 556         else
 557                 printf("%s: %d extents found", filename, num_extents);
 558         /* count, and thus expected, only set for indirect FIBMAP'd files */
 559         if (is_ext2 && expected && expected < num_extents)
 560                 printf(", perfection would be %d extent%s\n", expected,
 561                         (expected > 1) ? "s" : "");
 562         else
 563                 fputc('\n', stdout);
 564 out_close:
 565         close(fd);
 566
 567         return rc;
 568 }
 569
 570 static void usage(const char *progname)
 571 {
 572         fprintf(stderr, "Usage: %s [-b{blocksize}[KMG]] [-BeEksvxX] file ...\n",
 573                 progname);
 574         exit(1);
 575 }
 576
 577 int main(int argc, char**argv)
 578 {
 579         char **cpp;
 580         int rc = 0, c;
 581         int version = 0;
 582
 583         while ((c = getopt(argc, argv, "Bb::eEkPsvVxX")) != EOF) {
 584                 switch (c) {
 585                 case 'B':
 586                         force_bmap++;
 587                         break;
 588                 case 'b':
 589                         if (optarg) {
 590                                 char *end;
 591                                 unsigned long val;
 592
 593                                 val = strtoul(optarg, &end, 0);
 594                                 if (end) {
 595 #if __GNUC_PREREQ (7, 0)
 596 #pragma GCC diagnostic push
 597 #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
 598 #endif
 599                                         switch (end[0]) {
 600                                         case 'g':
 601                                         case 'G':
 602                                                 val *= 1024;
 603                                                 /* fall through */
 604                                         case 'm':
 605                                         case 'M':
 606                                                 val *= 1024;
 607                                                 /* fall through */
 608                                         case 'k':
 609                                         case 'K':
 610                                                 val *= 1024;
 611                                                 break;
 612                                         default:
 613                                                 break;
 614                                         }
 615 #if __GNUC_PREREQ (7, 0)
 616 #pragma GCC diagnostic pop
 617 #endif
 618                                 }
 619                                 /* Specifying too large a blocksize will just
 620                                  * shift all extents down to zero length. Even
 621                                  * 1GB is questionable, but caveat emptor. */
 622                                 if (val > 1024 * 1024 * 1024) {
 623                                         fprintf(stderr,
 624                                                 "%s: blocksize %lu over 1GB\n",
 625                                                 argv[0], val);
 626                                         usage(argv[0]);
 627                                 }
 628                                 blocksize = val;
 629                         } else { /* Allow -b without argument for compat. Remove
 630                                   * this eventually so "-b {blocksize}" works */
 631                                 fprintf(stderr, "%s: -b needs a blocksize "
 632                                         "option, assuming 1024-byte blocks.\n",
 633                                         argv[0]);
 634                                 blocksize = 1024;
 635                         }
 636                         break;
 637                 case 'E':
 638                         use_extent_cache++;
 639                         /* fallthrough */
 640                 case 'e':
 641                         force_extent++;
 642                         if (!verbose)
 643                                 verbose++;
 644                         break;
 645                 case 'k':
 646                         blocksize = 1024;
 647                         break;
 648                 case 'P':
 649                         precache_file++;
 650                         break;
 651                 case 's':
 652                         sync_file++;
 653                         break;
 654                 case 'v':
 655                         verbose++;
 656                         break;
 657                 case 'V':
 658                         version++;
 659                         break;
 660                 case 'x':
 661                         xattr_map++;
 662                         break;
 663                 case 'X':
 664                         ext_fmt = hex_fmt;
 665                         break;
 666                 default:
 667                         usage(argv[0]);
 668                         break;
 669                 }
 670         }
 671         if (version) {
 672                 /* Print version number and exit */
 673                 printf("filefrag %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 674                 if (version + verbose > 1) {
 675                         char flags[256] = "";
 676
 677                         print_flags(0xffffffff, flags, sizeof(flags), 0);
 678                         printf("supported: %s\n", flags);
 679                 }
 680                 exit(0);
 681         }
 682
 683         if (optind == argc)
 684                 usage(argv[0]);
 685
 686         for (cpp = argv + optind; *cpp != NULL; cpp++) {
 687                 int rc2 = frag_report(*cpp);
 688
 689                 if (rc2 < 0 && rc == 0)
 690                         rc = rc2;
 691         }
 692
 693         return -rc;
 694 }
 695 #endif