io/open.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2003-2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "command.h"
   8 #include "input.h"
   9 #include "init.h"
  10 #include "io.h"
  11 #include "libxfs.h"
  12 #include "fsgeom.h"
  13 #include "libfrog/bulkstat.h"
  14
  15 #ifndef __O_TMPFILE
  16 #if defined __alpha__
  17 #define __O_TMPFILE     0100000000
  18 #elif defined(__hppa__)
  19 #define __O_TMPFILE      040000000
  20 #elif defined(__sparc__)
  21 #define __O_TMPFILE      0x2000000
  22 #else
  23 #define __O_TMPFILE      020000000
  24 #endif
  25 #endif /* __O_TMPFILE */
  26
  27 #ifndef O_TMPFILE
  28 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
  29 #endif
  30
  31 #ifndef O_PATH
  32 #if defined __alpha__
  33 #define O_PATH          040000000
  34 #elif defined(__hppa__)
  35 #define O_PATH          020000000
  36 #elif defined(__sparc__)
  37 #define O_PATH          0x1000000
  38 #else
  39 #define O_PATH          010000000
  40 #endif
  41 #endif /* O_PATH */
  42
  43 static cmdinfo_t open_cmd;
  44 static cmdinfo_t close_cmd;
  45 static cmdinfo_t chproj_cmd;
  46 static cmdinfo_t lsproj_cmd;
  47 static cmdinfo_t extsize_cmd;
  48 static cmdinfo_t inode_cmd;
  49 static cmdinfo_t chmod_cmd;
  50 static prid_t prid;
  51 static long extsize;
  52
  53 int
  54 openfile(
  55         char            *path,
  56         struct xfs_fsop_geom *geom,
  57         int             flags,
  58         mode_t          mode,
  59         struct fs_path  *fs_path)
  60 {
  61         struct fs_path  *fsp;
  62         struct stat     st = { 0 };
  63         int             fd;
  64         int             oflags;
  65
  66         oflags = flags & IO_READONLY ? O_RDONLY : O_RDWR;
  67         if (flags & IO_APPEND)
  68                 oflags |= O_APPEND;
  69         if (flags & IO_CREAT)
  70                 oflags |= O_CREAT;
  71         if (flags & IO_DIRECT)
  72                 oflags |= O_DIRECT;
  73         if (flags & IO_OSYNC)
  74                 oflags |= O_SYNC;
  75         if (flags & IO_TRUNC)
  76                 oflags |= O_TRUNC;
  77         if (flags & IO_NONBLOCK)
  78                 oflags |= O_NONBLOCK;
  79         if (flags & IO_TMPFILE)
  80                 oflags |= O_TMPFILE;
  81         if (flags & IO_PATH)
  82                 oflags |= O_PATH;
  83         if (flags & IO_NOFOLLOW)
  84                 oflags |= O_NOFOLLOW;
  85
  86         /*
  87          * if we've been passed a pipe to open, don't block waiting for a
  88          * reader or writer to appear. We want to either succeed or error out
  89          * immediately.
  90          */
  91         if (stat(path, &st) < 0 && errno != ENOENT) {
  92                 perror("stat");
  93                 return -1;
  94         }
  95         if (S_ISFIFO(st.st_mode))
  96                 oflags |= O_NONBLOCK;
  97
  98         fd = open(path, oflags, mode);
  99         if (fd < 0) {
 100                 if (errno == EISDIR &&
 101                     ((oflags & (O_RDWR|O_TMPFILE)) == O_RDWR)) {
 102                         /* make it as if we asked for O_RDONLY & try again */
 103                         oflags &= ~O_RDWR;
 104                         oflags |= O_RDONLY;
 105                         flags |= IO_READONLY;
 106                         fd = open(path, oflags, mode);
 107                         if (fd < 0) {
 108                                 perror(path);
 109                                 return -1;
 110                         }
 111                 } else {
 112                         perror(path);
 113                         return -1;
 114                 }
 115         }
 116
 117         if (!geom || !platform_test_xfs_fd(fd))
 118                 return fd;
 119
 120         if (flags & IO_PATH) {
 121                 /* Can't call ioctl() on O_PATH fds */
 122                 memset(geom, 0, sizeof(*geom));
 123         } else {
 124                 int     ret;
 125
 126                 ret = xfrog_geometry(fd, geom);
 127                 if (ret) {
 128                         errno = ret;
 129                         perror("XFS_IOC_FSGEOMETRY");
 130                         close(fd);
 131                         return -1;
 132                 }
 133         }
 134
 135         if (!(flags & (IO_READONLY | IO_PATH)) && (flags & IO_REALTIME)) {
 136                 struct fsxattr  attr;
 137
 138                 if (xfsctl(path, fd, FS_IOC_FSGETXATTR, &attr) < 0) {
 139                         perror("FS_IOC_FSGETXATTR");
 140                         close(fd);
 141                         return -1;
 142                 }
 143                 if (!(attr.fsx_xflags & FS_XFLAG_REALTIME)) {
 144                         attr.fsx_xflags |= FS_XFLAG_REALTIME;
 145                         if (xfsctl(path, fd, FS_IOC_FSSETXATTR, &attr) < 0) {
 146                                 perror("FS_IOC_FSSETXATTR");
 147                                 close(fd);
 148                                 return -1;
 149                         }
 150                 }
 151         }
 152
 153         if (fs_path) {
 154                 fsp = fs_table_lookup(path, FS_MOUNT_POINT);
 155                 if (!fsp)
 156                         memset(fs_path, 0, sizeof(*fs_path));
 157                 else
 158                         *fs_path = *fsp;
 159         }
 160         return fd;
 161 }
 162
 163 int
 164 addfile(
 165         char            *name,
 166         int             fd,
 167         struct xfs_fsop_geom *geometry,
 168         int             flags,
 169         struct fs_path  *fs_path)
 170 {
 171         char            *filename;
 172
 173         filename = strdup(name);
 174         if (!filename) {
 175                 perror("strdup");
 176                 close(fd);
 177                 return -1;
 178         }
 179
 180         /* Extend the table of currently open files */
 181         filetable = (fileio_t *)realloc(filetable,      /* growing */
 182                                         ++filecount * sizeof(fileio_t));
 183         if (!filetable) {
 184                 perror("realloc");
 185                 filecount = 0;
 186                 free(filename);
 187                 close(fd);
 188                 return -1;
 189         }
 190
 191         /* Finally, make this the new active open file */
 192         file = &filetable[filecount - 1];
 193         file->fd = fd;
 194         file->flags = flags;
 195         file->name = filename;
 196         file->geom = *geometry;
 197         file->fs_path = *fs_path;
 198         return 0;
 199 }
 200
 201 static void
 202 open_help(void)
 203 {
 204         printf(_(
 205 "\n"
 206 " opens a new file in the requested mode\n"
 207 "\n"
 208 " Example:\n"
 209 " 'open -cd /tmp/data' - creates/opens data file read-write for direct IO\n"
 210 "\n"
 211 " Opens a file for subsequent use by all of the other xfs_io commands.\n"
 212 " With no arguments, open uses the stat command to show the current file.\n"
 213 " -a -- open with the O_APPEND flag (append-only mode)\n"
 214 " -d -- open with O_DIRECT (non-buffered IO, note alignment constraints)\n"
 215 " -f -- open with O_CREAT (create the file if it doesn't exist)\n"
 216 " -m -- permissions to use in case a new file is created (default 0600)\n"
 217 " -n -- open with O_NONBLOCK\n"
 218 " -r -- open with O_RDONLY, the default is O_RDWR\n"
 219 " -s -- open with O_SYNC\n"
 220 " -t -- open with O_TRUNC (truncate the file to zero length if it exists)\n"
 221 " -R -- mark the file as a realtime XFS file immediately after opening it\n"
 222 " -T -- open with O_TMPFILE (create a file not visible in the namespace)\n"
 223 " -P -- open with O_PATH (create an fd that is merely a location reference)\n"
 224 " -L -- open with O_NOFOLLOW (don't follow symlink)\n"
 225 " Note1: usually read/write direct IO requests must be blocksize aligned;\n"
 226 "        some kernels, however, allow sectorsize alignment for direct IO.\n"
 227 " Note2: the bmap for non-regular files can be obtained provided the file\n"
 228 "        was opened correctly (in particular, must be opened read-only).\n"
 229 "\n"));
 230 }
 231
 232 static int
 233 open_f(
 234         int             argc,
 235         char            **argv)
 236 {
 237         int             c, fd, flags = 0;
 238         char            *sp;
 239         mode_t          mode = 0600;
 240         struct xfs_fsop_geom geometry = { 0 };
 241         struct fs_path  fsp;
 242
 243         if (argc == 1) {
 244                 if (file)
 245                         return stat_f(argc, argv);
 246                 fprintf(stderr, _("no files are open, try 'help open'\n"));
 247                 return 0;
 248         }
 249
 250         while ((c = getopt(argc, argv, "FLPRTacdfm:nrstx")) != EOF) {
 251                 switch (c) {
 252                 case 'F':
 253                         /* Ignored / deprecated now, handled automatically */
 254                         break;
 255                 case 'a':
 256                         flags |= IO_APPEND;
 257                         break;
 258                 case 'c':
 259                 case 'f':
 260                         flags |= IO_CREAT;
 261                         break;
 262                 case 'd':
 263                         flags |= IO_DIRECT;
 264                         break;
 265                 case 'm':
 266                         mode = strtoul(optarg, &sp, 0);
 267                         if (!sp || sp == optarg) {
 268                                 printf(_("non-numeric mode -- %s\n"), optarg);
 269                                 return 0;
 270                         }
 271                         break;
 272                 case 'n':
 273                         flags |= IO_NONBLOCK;
 274                         break;
 275                 case 'r':
 276                         flags |= IO_READONLY;
 277                         break;
 278                 case 's':
 279                         flags |= IO_OSYNC;
 280                         break;
 281                 case 't':
 282                         flags |= IO_TRUNC;
 283                         break;
 284                 case 'R':
 285                 case 'x':       /* backwards compatibility */
 286                         flags |= IO_REALTIME;
 287                         break;
 288                 case 'T':
 289                         flags |= IO_TMPFILE;
 290                         break;
 291                 case 'P':
 292                         flags |= IO_PATH;
 293                         break;
 294                 case 'L':
 295                         flags |= IO_NOFOLLOW;
 296                         break;
 297                 default:
 298                         return command_usage(&open_cmd);
 299                 }
 300         }
 301
 302         if (optind != argc - 1)
 303                 return command_usage(&open_cmd);
 304
 305         if ((flags & (IO_READONLY|IO_TMPFILE)) == (IO_READONLY|IO_TMPFILE)) {
 306                 fprintf(stderr, _("-T and -r options are incompatible\n"));
 307                 return -1;
 308         }
 309
 310         if ((flags & (IO_PATH|IO_NOFOLLOW)) &&
 311             (flags & ~(IO_PATH|IO_NOFOLLOW))) {
 312                 fprintf(stderr, _("-P and -L are incompatible with the other options\n"));
 313                 return -1;
 314         }
 315
 316         fd = openfile(argv[optind], &geometry, flags, mode, &fsp);
 317         if (fd < 0)
 318                 return 0;
 319
 320         if (!platform_test_xfs_fd(fd))
 321                 flags |= IO_FOREIGN;
 322
 323         addfile(argv[optind], fd, &geometry, flags, &fsp);
 324         return 0;
 325 }
 326
 327 static int
 328 close_f(
 329         int             argc,
 330         char            **argv)
 331 {
 332         size_t          length;
 333         unsigned int    offset;
 334
 335         if (close(file->fd) < 0) {
 336                 perror("close");
 337                 return 0;
 338         }
 339         free(file->name);
 340
 341         /* Shuffle the file table entries down over the removed entry */
 342         offset = file - &filetable[0];
 343         length = filecount * sizeof(fileio_t);
 344         length -= (offset + 1) * sizeof(fileio_t);
 345         if (length)
 346                 memmove(file, file + 1, length);
 347
 348         /* Resize the memory allocated for the table, possibly freeing */
 349         if (--filecount) {
 350                 filetable = (fileio_t *)realloc(filetable,      /* shrinking */
 351                                         filecount * sizeof(fileio_t));
 352                 if (offset == filecount)
 353                         offset--;
 354                 file = filetable + offset;
 355         } else {
 356                 free(filetable);
 357                 file = filetable = NULL;
 358         }
 359         filelist_f();
 360         return 0;
 361 }
 362
 363 static void
 364 lsproj_help(void)
 365 {
 366         printf(_(
 367 "\n"
 368 " displays the project identifier associated with the current path\n"
 369 "\n"
 370 " Options:\n"
 371 " -R -- recursively descend (useful when current path is a directory)\n"
 372 " -D -- recursively descend, but only list projects on directories\n"
 373 "\n"));
 374 }
 375
 376 static int
 377 lsproj_callback(
 378         const char              *path,
 379         const struct stat       *stat,
 380         int                     status,
 381         struct FTW              *data)
 382 {
 383         prid_t                  projid;
 384         int                     fd;
 385
 386         if (recurse_dir && !S_ISDIR(stat->st_mode))
 387                 return 0;
 388
 389         if ((fd = open(path, O_RDONLY)) == -1) {
 390                 fprintf(stderr, _("%s: cannot open %s: %s\n"),
 391                         progname, path, strerror(errno));
 392         } else {
 393                 if (getprojid(path, fd, &projid) == 0)
 394                         printf("[%u] %s\n", (unsigned int)projid, path);
 395                 close(fd);
 396         }
 397         return 0;
 398 }
 399
 400 static int
 401 lsproj_f(
 402         int             argc,
 403         char            **argv)
 404 {
 405         prid_t          projid;
 406         int             c;
 407
 408         recurse_all = recurse_dir = 0;
 409         while ((c = getopt(argc, argv, "DR")) != EOF) {
 410                 switch (c) {
 411                 case 'D':
 412                         recurse_all = 0;
 413                         recurse_dir = 1;
 414                         break;
 415                 case 'R':
 416                         recurse_all = 1;
 417                         recurse_dir = 0;
 418                         break;
 419                 default:
 420                         return command_usage(&lsproj_cmd);
 421                 }
 422         }
 423
 424         if (argc != optind)
 425                 return command_usage(&lsproj_cmd);
 426
 427         if (recurse_all || recurse_dir)
 428                 nftw(file->name, lsproj_callback,
 429                         100, FTW_PHYS | FTW_MOUNT | FTW_DEPTH);
 430         else if (getprojid(file->name, file->fd, &projid) < 0)
 431                 perror("getprojid");
 432         else
 433                 printf(_("projid = %u\n"), (unsigned int)projid);
 434         return 0;
 435 }
 436
 437 static void
 438 chproj_help(void)
 439 {
 440         printf(_(
 441 "\n"
 442 " modifies the project identifier associated with the current path\n"
 443 "\n"
 444 " -R -- recursively descend (useful when current path is a directory)\n"
 445 " -D -- recursively descend, only modifying projects on directories\n"
 446 "\n"));
 447 }
 448
 449 static int
 450 chproj_callback(
 451         const char              *path,
 452         const struct stat       *stat,
 453         int                     status,
 454         struct FTW              *data)
 455 {
 456         int                     fd;
 457
 458         if (recurse_dir && !S_ISDIR(stat->st_mode))
 459                 return 0;
 460
 461         if ((fd = open(path, O_RDONLY)) == -1) {
 462                 fprintf(stderr, _("%s: cannot open %s: %s\n"),
 463                         progname, path, strerror(errno));
 464         } else {
 465                 if (setprojid(path, fd, prid) < 0)
 466                         perror("setprojid");
 467                 close(fd);
 468         }
 469         return 0;
 470 }
 471
 472 static int
 473 chproj_f(
 474         int             argc,
 475         char            **argv)
 476 {
 477         int             c;
 478
 479         recurse_all = recurse_dir = 0;
 480         while ((c = getopt(argc, argv, "DR")) != EOF) {
 481                 switch (c) {
 482                 case 'D':
 483                         recurse_all = 0;
 484                         recurse_dir = 1;
 485                         break;
 486                 case 'R':
 487                         recurse_all = 1;
 488                         recurse_dir = 0;
 489                         break;
 490                 default:
 491                         return command_usage(&chproj_cmd);
 492                 }
 493         }
 494
 495         if (argc != optind + 1)
 496                 return command_usage(&chproj_cmd);
 497
 498         prid = prid_from_string(argv[optind]);
 499         if (prid == -1) {
 500                 printf(_("invalid project ID -- %s\n"), argv[optind]);
 501                 return 0;
 502         }
 503
 504         if (recurse_all || recurse_dir)
 505                 nftw(file->name, chproj_callback,
 506                         100, FTW_PHYS | FTW_MOUNT | FTW_DEPTH);
 507         else if (setprojid(file->name, file->fd, prid) < 0)
 508                 perror("setprojid");
 509         return 0;
 510 }
 511
 512 static void
 513 extsize_help(void)
 514 {
 515         printf(_(
 516 "\n"
 517 " report or modify preferred extent size (in bytes) for the current path\n"
 518 "\n"
 519 " -R -- recursively descend (useful when current path is a directory)\n"
 520 " -D -- recursively descend, only modifying extsize on directories\n"
 521 "\n"));
 522 }
 523
 524 static int
 525 get_extsize(const char *path, int fd)
 526 {
 527         struct fsxattr  fsx;
 528
 529         if ((xfsctl(path, fd, FS_IOC_FSGETXATTR, &fsx)) < 0) {
 530                 printf("%s: FS_IOC_FSGETXATTR %s: %s\n",
 531                         progname, path, strerror(errno));
 532                 return 0;
 533         }
 534         printf("[%u] %s\n", fsx.fsx_extsize, path);
 535         return 0;
 536 }
 537
 538 static int
 539 set_extsize(const char *path, int fd, long extsz)
 540 {
 541         struct fsxattr  fsx;
 542         struct stat     stat;
 543
 544         if (fstat(fd, &stat) < 0) {
 545                 perror("fstat");
 546                 return 0;
 547         }
 548         if ((xfsctl(path, fd, FS_IOC_FSGETXATTR, &fsx)) < 0) {
 549                 printf("%s: FS_IOC_FSGETXATTR %s: %s\n",
 550                         progname, path, strerror(errno));
 551                 return 0;
 552         }
 553
 554         if (S_ISREG(stat.st_mode)) {
 555                 fsx.fsx_xflags |= FS_XFLAG_EXTSIZE;
 556         } else if (S_ISDIR(stat.st_mode)) {
 557                 fsx.fsx_xflags |= FS_XFLAG_EXTSZINHERIT;
 558         } else {
 559                 printf(_("invalid target file type - file %s\n"), path);
 560                 return 0;
 561         }
 562         fsx.fsx_extsize = extsz;
 563
 564         if ((xfsctl(path, fd, FS_IOC_FSSETXATTR, &fsx)) < 0) {
 565                 printf("%s: FS_IOC_FSSETXATTR %s: %s\n",
 566                         progname, path, strerror(errno));
 567                 return 0;
 568         }
 569
 570         return 0;
 571 }
 572
 573 static int
 574 get_extsize_callback(
 575         const char              *path,
 576         const struct stat       *stat,
 577         int                     status,
 578         struct FTW              *data)
 579 {
 580         int                     fd;
 581
 582         if (recurse_dir && !S_ISDIR(stat->st_mode))
 583                 return 0;
 584
 585         if ((fd = open(path, O_RDONLY)) == -1) {
 586                 fprintf(stderr, _("%s: cannot open %s: %s\n"),
 587                         progname, path, strerror(errno));
 588         } else {
 589                 get_extsize(path, fd);
 590                 close(fd);
 591         }
 592         return 0;
 593 }
 594
 595 static int
 596 set_extsize_callback(
 597         const char              *path,
 598         const struct stat       *stat,
 599         int                     status,
 600         struct FTW              *data)
 601 {
 602         int                     fd;
 603
 604         if (recurse_dir && !S_ISDIR(stat->st_mode))
 605                 return 0;
 606
 607         if ((fd = open(path, O_RDONLY)) == -1) {
 608                 fprintf(stderr, _("%s: cannot open %s: %s\n"),
 609                         progname, path, strerror(errno));
 610         } else {
 611                 set_extsize(path, fd, extsize);
 612                 close(fd);
 613         }
 614         return 0;
 615 }
 616
 617 static int
 618 extsize_f(
 619         int             argc,
 620         char            **argv)
 621 {
 622         size_t                  blocksize, sectsize;
 623         int                     c;
 624
 625         recurse_all = recurse_dir = 0;
 626         init_cvtnum(&blocksize, &sectsize);
 627         while ((c = getopt(argc, argv, "DR")) != EOF) {
 628                 switch (c) {
 629                 case 'D':
 630                         recurse_all = 0;
 631                         recurse_dir = 1;
 632                         break;
 633                 case 'R':
 634                         recurse_all = 1;
 635                         recurse_dir = 0;
 636                         break;
 637                 default:
 638                         return command_usage(&extsize_cmd);
 639                 }
 640         }
 641
 642         if (optind < argc) {
 643                 extsize = (long)cvtnum(blocksize, sectsize, argv[optind]);
 644                 if (extsize < 0) {
 645                         printf(_("non-numeric extsize argument -- %s\n"),
 646                                 argv[optind]);
 647                         return 0;
 648                 }
 649         } else {
 650                 extsize = -1;
 651         }
 652
 653         if (recurse_all || recurse_dir)
 654                 nftw(file->name, (extsize >= 0) ?
 655                         set_extsize_callback : get_extsize_callback,
 656                         100, FTW_PHYS | FTW_MOUNT | FTW_DEPTH);
 657         else if (extsize >= 0)
 658                 set_extsize(file->name, file->fd, extsize);
 659         else
 660                 get_extsize(file->name, file->fd);
 661         return 0;
 662 }
 663
 664 static void
 665 inode_help(void)
 666 {
 667         printf(_(
 668 "\n"
 669 "Query physical information about an inode"
 670 "\n"
 671 " Default:      -- Return 1 if any inode number greater than 32 bits exists in\n"
 672 "                  the filesystem, or 0 if none exist\n"
 673 " num           -- Return inode number [num] if in use, or 0 if not in use\n"
 674 " -n num        -- Return the next used inode after [num]\n"
 675 " -v            -- Verbose mode - display returned inode number's size in bits\n"
 676 "\n"));
 677 }
 678
 679 static __u64
 680 get_last_inode(void)
 681 {
 682         __u64                   lastip = 0;
 683         __u64                   lastgrp = 0;
 684         __s32                   ocount = 0;
 685         __u64                   last_ino;
 686         struct xfs_inogrp       igroup[1024];
 687         struct xfs_fsop_bulkreq bulkreq;
 688
 689         bulkreq.lastip = &lastip;
 690         bulkreq.ubuffer = &igroup;
 691         bulkreq.icount = sizeof(igroup) / sizeof(struct xfs_inogrp);
 692         bulkreq.ocount = &ocount;
 693
 694         for (;;) {
 695                 if (xfsctl(file->name, file->fd, XFS_IOC_FSINUMBERS,
 696                                 &bulkreq)) {
 697                         perror("XFS_IOC_FSINUMBERS");
 698                         return 0;
 699                 }
 700
 701                 /* Did we reach the last inode? */
 702                 if (ocount == 0)
 703                         break;
 704
 705                 /* last inode in igroup table */
 706                 lastgrp = ocount;
 707         }
 708
 709         if (lastgrp == 0)
 710                 return 0;
 711
 712         lastgrp--;
 713
 714         /* The last inode number in use */
 715         last_ino = igroup[lastgrp].xi_startino +
 716                   libxfs_highbit64(igroup[lastgrp].xi_allocmask);
 717
 718         return last_ino;
 719 }
 720
 721 static int
 722 inode_f(
 723         int                     argc,
 724         char                    **argv)
 725 {
 726         struct xfs_bstat        bstat;
 727         uint32_t                count = 0;
 728         uint64_t                result_ino = 0;
 729         uint64_t                userino = NULLFSINO;
 730         char                    *p;
 731         int                     c;
 732         int                     verbose = 0;
 733         int                     ret_next = 0;
 734         int                     ret;
 735
 736         while ((c = getopt(argc, argv, "nv")) != EOF) {
 737                 switch (c) {
 738                 case 'v':
 739                         verbose = 1;
 740                         break;
 741                 case 'n':
 742                         ret_next = 1;
 743                         break;
 744                 default:
 745                         return command_usage(&inode_cmd);
 746                 }
 747         }
 748
 749         /* Last arg (if present) should be an inode number */
 750         if (optind < argc) {
 751                 userino = strtoull(argv[optind], &p, 10);
 752                 if ((*p != '\0')) {
 753                         printf(_("%s is not a numeric inode value\n"),
 754                                 argv[optind]);
 755                         exitcode = 1;
 756                         return 0;
 757                 }
 758                 optind++;
 759         }
 760
 761         /* Extra junk? */
 762         if (optind < argc)
 763                 return command_usage(&inode_cmd);
 764
 765         /* -n option requires an inode number */
 766         if (ret_next && userino == NULLFSINO)
 767                 return command_usage(&inode_cmd);
 768
 769         if (userino == NULLFSINO) {
 770                 /* We are finding last inode in use */
 771                 result_ino = get_last_inode();
 772                 if (!result_ino) {
 773                         exitcode = 1;
 774                         return 0;
 775                 }
 776         } else if (ret_next) {
 777                 struct xfs_fd   xfd = XFS_FD_INIT(file->fd);
 778
 779                 /* get next inode */
 780                 ret = xfrog_bulkstat(&xfd, &userino, 1, &bstat, &count);
 781                 if (ret) {
 782                         errno = ret;
 783                         perror("bulkstat");
 784                         exitcode = 1;
 785                         return 0;
 786                 }
 787
 788                 /* The next inode in use, or 0 if none */
 789                 if (count)
 790                         result_ino = bstat.bs_ino;
 791                 else
 792                         result_ino = 0;
 793         } else {
 794                 struct xfs_fd   xfd = XFS_FD_INIT(file->fd);
 795
 796                 /* get this inode */
 797                 ret = xfrog_bulkstat_single(&xfd, userino, &bstat);
 798                 if (ret == EINVAL) {
 799                         /* Not in use */
 800                         result_ino = 0;
 801                 } else if (ret) {
 802                         errno = ret;
 803                         perror("bulkstat_single");
 804                         exitcode = 1;
 805                         return 0;
 806                 } else {
 807                         result_ino = bstat.bs_ino;
 808                 }
 809         }
 810
 811         if (verbose && result_ino) {
 812                 /* Requested verbose and we have an answer */
 813                 printf("%llu:%d\n", (unsigned long long)result_ino,
 814                         result_ino > XFS_MAXINUMBER_32 ? 64 : 32);
 815         } else if (userino == NULLFSINO) {
 816                 /* Just checking 32 or 64 bit presence, non-verbose */
 817                 printf("%d\n", result_ino > XFS_MAXINUMBER_32 ? 1 : 0);
 818         } else {
 819                 /* We asked about a specific inode, non-verbose */
 820                 printf("%llu\n", (unsigned long long)result_ino);
 821         }
 822
 823         return 0;
 824 }
 825
 826 static void
 827 chmod_help(void)
 828 {
 829         printf(_(
 830 "\n"
 831 " Change the read/write permissions on the current file\n"
 832 "\n"
 833 " Options:\n"
 834 " -r -- make the file read only (0444 permissions)\n"
 835 " -w -- make the file read/write (0664 permissions)\n"
 836 "\n"));
 837 }
 838
 839 static int
 840 chmod_f(
 841         int             argc,
 842         char            **argv)
 843 {
 844         mode_t          mode = S_IRUSR | S_IRGRP | S_IROTH;
 845         int             c;
 846
 847         while ((c = getopt(argc, argv, "rw")) != EOF) {
 848                 switch (c) {
 849                 case 'r':
 850                         break;
 851                 case 'w':
 852                         mode |= S_IWUSR | S_IWGRP;
 853                         break;
 854                 default:
 855                         return command_usage(&chmod_cmd);
 856                 }
 857         }
 858
 859         if (argc != optind)
 860                 return command_usage(&chmod_cmd);
 861
 862         if (fchmod(file->fd, mode) < 0) {
 863                 exitcode = 1;
 864                 perror("fchmod");
 865         }
 866         return 0;
 867 }
 868 void
 869 open_init(void)
 870 {
 871         open_cmd.name = "open";
 872         open_cmd.altname = "o";
 873         open_cmd.cfunc = open_f;
 874         open_cmd.argmin = 0;
 875         open_cmd.argmax = -1;
 876         open_cmd.flags = CMD_NOMAP_OK | CMD_NOFILE_OK |
 877                          CMD_FOREIGN_OK | CMD_FLAG_ONESHOT;
 878         open_cmd.args = _("[-acdrstxRTPL] [-m mode] [path]");
 879         open_cmd.oneline = _("open the file specified by path");
 880         open_cmd.help = open_help;
 881
 882         close_cmd.name = "close";
 883         close_cmd.altname = "c";
 884         close_cmd.cfunc = close_f;
 885         close_cmd.argmin = 0;
 886         close_cmd.argmax = 0;
 887         close_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK | CMD_FLAG_ONESHOT;
 888         close_cmd.oneline = _("close the current open file");
 889
 890         chproj_cmd.name = "chproj";
 891         chproj_cmd.cfunc = chproj_f;
 892         chproj_cmd.args = _("[-D | -R] projid");
 893         chproj_cmd.argmin = 1;
 894         chproj_cmd.argmax = -1;
 895         chproj_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
 896         chproj_cmd.oneline =
 897                 _("change project identifier on the currently open file");
 898         chproj_cmd.help = chproj_help;
 899
 900         lsproj_cmd.name = "lsproj";
 901         lsproj_cmd.cfunc = lsproj_f;
 902         lsproj_cmd.args = _("[-D | -R]");
 903         lsproj_cmd.argmin = 0;
 904         lsproj_cmd.argmax = -1;
 905         lsproj_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
 906         lsproj_cmd.oneline =
 907                 _("list project identifier set on the currently open file");
 908         lsproj_cmd.help = lsproj_help;
 909
 910         extsize_cmd.name = "extsize";
 911         extsize_cmd.cfunc = extsize_f;
 912         extsize_cmd.args = _("[-D | -R] [extsize]");
 913         extsize_cmd.argmin = 0;
 914         extsize_cmd.argmax = -1;
 915         extsize_cmd.flags = CMD_NOMAP_OK;
 916         extsize_cmd.oneline =
 917                 _("get/set preferred extent size (in bytes) for the open file");
 918         extsize_cmd.help = extsize_help;
 919
 920         inode_cmd.name = "inode";
 921         inode_cmd.cfunc = inode_f;
 922         inode_cmd.args = _("[-nv] [num]");
 923         inode_cmd.argmin = 0;
 924         inode_cmd.argmax = 3;
 925         inode_cmd.flags = CMD_NOMAP_OK | CMD_FLAG_ONESHOT;
 926         inode_cmd.oneline =
 927                 _("Query inode number usage in the filesystem");
 928         inode_cmd.help = inode_help;
 929
 930         chmod_cmd.name = "chmod";
 931         chmod_cmd.cfunc = chmod_f;
 932         chmod_cmd.args = _("-r | -w");
 933         chmod_cmd.argmin = 1;
 934         chmod_cmd.argmax = 1;
 935         chmod_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK | CMD_FLAG_ONESHOT;
 936         chmod_cmd.oneline =
 937                 _("change the read/write permissions on the currently open file");
 938         chmod_cmd.help = chmod_help;
 939
 940         add_command(&open_cmd);
 941         add_command(&close_cmd);
 942         add_command(&chproj_cmd);
 943         add_command(&lsproj_cmd);
 944         add_command(&extsize_cmd);
 945         add_command(&inode_cmd);
 946         add_command(&chmod_cmd);
 947 }