lustre/utils/lhsmtool_posix.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.htm
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * (C) Copyright 2012 Commissariat a l'energie atomique et aux energies
  24  *     alternatives
  25  *
  26  * Copyright (c) 2013, 2016, Intel Corporation.
  27  */
  28 /* HSM copytool program for POSIX filesystem-based HSM's.
  29  *
  30  * An HSM copytool daemon acts on action requests from Lustre to copy files
  31  * to and from an HSM archive system. This one in particular makes regular
  32  * POSIX filesystem calls to a given path, where an HSM is presumably mounted.
  33  *
  34  * This particular tool can also import an existing HSM archive.
  35  */
  36
  37 #ifndef _GNU_SOURCE
  38 #define _GNU_SOURCE
  39 #endif
  40 #include <ctype.h>
  41 #include <fcntl.h>
  42 #include <stdio.h>
  43 #include <stdint.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <dirent.h>
  47 #include <errno.h>
  48 #include <getopt.h>
  49 #include <pthread.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <utime.h>
  53 #include <signal.h>
  54 #include <sys/time.h>
  55 #include <sys/xattr.h>
  56 #include <sys/syscall.h>
  57 #include <sys/types.h>
  58
  59 #include <libcfs/util/string.h>
  60 #include <linux/lustre/lustre_fid.h>
  61 #include <lustre/lustreapi.h>
  62
  63 /* Progress reporting period */
  64 #define REPORT_INTERVAL_DEFAULT 30
  65 /* HSM hash subdir permissions */
  66 #define DIR_PERM S_IRWXU
  67 /* HSM hash file permissions */
  68 #define FILE_PERM (S_IRUSR | S_IWUSR)
  69
  70 #define ONE_MB 0x100000
  71
  72 #ifndef NSEC_PER_SEC
  73 # define NSEC_PER_SEC 1000000000UL
  74 #endif
  75
  76 enum ct_action {
  77         CA_IMPORT = 1,
  78         CA_REBIND,
  79         CA_MAXSEQ,
  80 };
  81
  82 struct options {
  83         int                      o_copy_attrs;
  84         int                      o_daemonize;
  85         int                      o_dry_run;
  86         int                      o_abort_on_error;
  87         int                      o_shadow_tree;
  88         int                      o_verbose;
  89         int                      o_copy_xattrs;
  90         int                      o_archive_cnt;
  91         int                      o_archive_id[LL_HSM_MAX_ARCHIVE + 1];
  92         int                      o_report_int;
  93         unsigned long long       o_bandwidth;
  94         size_t                   o_chunk_size;
  95         enum ct_action           o_action;
  96         char                    *o_event_fifo;
  97         char                    *o_mnt;
  98         int                      o_mnt_fd;
  99         char                    *o_hsm_root;
 100         char                    *o_src; /* for import, or rebind */
 101         char                    *o_dst; /* for import, or rebind */
 102 };
 103
 104 /* everything else is zeroed */
 105 struct options opt = {
 106         .o_copy_attrs = 1,
 107         .o_shadow_tree = 1,
 108         .o_verbose = LLAPI_MSG_INFO,
 109         .o_copy_xattrs = 1,
 110         .o_report_int = REPORT_INTERVAL_DEFAULT,
 111         .o_chunk_size = ONE_MB,
 112 };
 113
 114 /* hsm_copytool_private will hold an open FD on the lustre mount point
 115  * for us. Additionally open one on the archive FS root to make sure
 116  * it doesn't drop out from under us (and remind the admin to shutdown
 117  * the copytool before unmounting). */
 118
 119 static int arc_fd = -1;
 120
 121 static int err_major;
 122 static int err_minor;
 123
 124 static char cmd_name[PATH_MAX];
 125 static char fs_name[MAX_OBD_NAME + 1];
 126
 127 static struct hsm_copytool_private *ctdata;
 128
 129 static inline double ct_now(void)
 130 {
 131         struct timeval tv;
 132
 133         gettimeofday(&tv, NULL);
 134
 135         return tv.tv_sec + 0.000001 * tv.tv_usec;
 136 }
 137
 138 #define CT_ERROR(_rc, _format, ...)                                     \
 139         llapi_error(LLAPI_MSG_ERROR, _rc,                               \
 140                     "%f %s[%ld]: "_format,                              \
 141                     ct_now(), cmd_name, syscall(SYS_gettid), ## __VA_ARGS__)
 142
 143 #define CT_DEBUG(_format, ...)                                          \
 144         llapi_error(LLAPI_MSG_DEBUG | LLAPI_MSG_NO_ERRNO, 0,            \
 145                     "%f %s[%ld]: "_format,                              \
 146                     ct_now(), cmd_name, syscall(SYS_gettid), ## __VA_ARGS__)
 147
 148 #define CT_WARN(_format, ...) \
 149         llapi_error(LLAPI_MSG_WARN | LLAPI_MSG_NO_ERRNO, 0,             \
 150                     "%f %s[%ld]: "_format,                              \
 151                     ct_now(), cmd_name, syscall(SYS_gettid), ## __VA_ARGS__)
 152
 153 #define CT_TRACE(_format, ...)                                          \
 154         llapi_error(LLAPI_MSG_INFO | LLAPI_MSG_NO_ERRNO, 0,             \
 155                     "%f %s[%ld]: "_format,                              \
 156                     ct_now(), cmd_name, syscall(SYS_gettid), ## __VA_ARGS__)
 157
 158 static void usage(const char *name, int rc)
 159 {
 160         fprintf(stdout,
 161         " Usage: %s [options]... <mode> <lustre_mount_point>\n"
 162         "The Lustre HSM Posix copy tool can be used as a daemon or "
 163         "as a command line tool\n"
 164         "The Lustre HSM daemon acts on action requests from Lustre\n"
 165         "to copy files to and from an HSM archive system.\n"
 166         "This POSIX-flavored daemon makes regular POSIX filesystem calls\n"
 167         "to an HSM mounted at a given hsm_root.\n"
 168         "   --daemon            Daemon mode, run in background\n"
 169         " Options:\n"
 170         "   --no-attr           Don't copy file attributes\n"
 171         "   --no-shadow         Don't create shadow namespace in archive\n"
 172         "   --no-xattr          Don't copy file extended attributes\n"
 173         "The Lustre HSM tool performs administrator-type actions\n"
 174         "on a Lustre HSM archive.\n"
 175         "This POSIX-flavored tool can link an existing HSM namespace\n"
 176         "into a Lustre filesystem.\n"
 177         " Usage:\n"
 178         "   %s [options] --import <src> <dst> <lustre_mount_point>\n"
 179         "      import an archived subtree from\n"
 180         "       <src> (FID or relative path to hsm_root) into the Lustre\n"
 181         "             filesystem at\n"
 182         "       <dst> (absolute path)\n"
 183         "   %s [options] --rebind <old_FID> <new_FID> <lustre_mount_point>\n"
 184         "      rebind an entry in the HSM to a new FID\n"
 185         "       <old_FID> old FID the HSM entry is bound to\n"
 186         "       <new_FID> new FID to bind the HSM entry to\n"
 187         "   %s [options] --rebind <list_file> <lustre_mount_point>\n"
 188         "      perform the rebind operation for all FID in the list file\n"
 189         "       each line of <list_file> consists of <old_FID> <new_FID>\n"
 190         "   %s [options] --max-sequence <fsname>\n"
 191         "       return the max fid sequence of archived files\n"
 192         "   --abort-on-error          Abort operation on major error\n"
 193         "   -A, --archive <#>         Archive number (repeatable)\n"
 194         "   -b, --bandwidth <bw>      Limit I/O bandwidth (unit can be used\n,"
 195         "                             default is MB)\n"
 196         "   --dry-run                 Don't run, just show what would be done\n"
 197         "   -c, --chunk-size <sz>     I/O size used during data copy\n"
 198         "                             (unit can be used, default is MB)\n"
 199         "   -f, --event-fifo <path>   Write events stream to fifo\n"
 200         "   -p, --hsm-root <path>     Target HSM mount point\n"
 201         "   -q, --quiet               Produce less verbose output\n"
 202         "   -u, --update-interval <s> Interval between progress reports sent\n"
 203         "                             to Coordinator\n"
 204         "   -v, --verbose             Produce more verbose output\n",
 205         cmd_name, cmd_name, cmd_name, cmd_name, cmd_name);
 206
 207         exit(rc);
 208 }
 209
 210 static int ct_parseopts(int argc, char * const *argv)
 211 {
 212         struct option long_opts[] = {
 213         { .val = 1,     .name = "abort-on-error",
 214           .flag = &opt.o_abort_on_error,        .has_arg = no_argument },
 215         { .val = 1,     .name = "abort_on_error",
 216           .flag = &opt.o_abort_on_error,        .has_arg = no_argument },
 217         { .val = 'A',   .name = "archive",      .has_arg = required_argument },
 218         { .val = 'b',   .name = "bandwidth",    .has_arg = required_argument },
 219         { .val = 'c',   .name = "chunk-size",   .has_arg = required_argument },
 220         { .val = 'c',   .name = "chunk_size",   .has_arg = required_argument },
 221         { .val = 1,     .name = "daemon",       .has_arg = no_argument,
 222           .flag = &opt.o_daemonize },
 223         { .val = 'f',   .name = "event-fifo",   .has_arg = required_argument },
 224         { .val = 'f',   .name = "event_fifo",   .has_arg = required_argument },
 225         { .val = 1,     .name = "dry-run",      .has_arg = no_argument,
 226           .flag = &opt.o_dry_run },
 227         { .val = 'h',   .name = "help",         .has_arg = no_argument },
 228         { .val = 'i',   .name = "import",       .has_arg = no_argument },
 229         { .val = 'M',   .name = "max-sequence", .has_arg = no_argument },
 230         { .val = 'M',   .name = "max_sequence", .has_arg = no_argument },
 231         { .val = 0,     .name = "no-attr",      .has_arg = no_argument,
 232           .flag = &opt.o_copy_attrs },
 233         { .val = 0,     .name = "no_attr",      .has_arg = no_argument,
 234           .flag = &opt.o_copy_attrs },
 235         { .val = 0,     .name = "no-shadow",    .has_arg = no_argument,
 236           .flag = &opt.o_shadow_tree },
 237         { .val = 0,     .name = "no_shadow",    .has_arg = no_argument,
 238           .flag = &opt.o_shadow_tree },
 239         { .val = 0,     .name = "no-xattr",     .has_arg = no_argument,
 240           .flag = &opt.o_copy_xattrs },
 241         { .val = 0,     .name = "no_xattr",     .has_arg = no_argument,
 242           .flag = &opt.o_copy_xattrs },
 243         { .val = 'p',   .name = "hsm-root",     .has_arg = required_argument },
 244         { .val = 'p',   .name = "hsm_root",     .has_arg = required_argument },
 245         { .val = 'q',   .name = "quiet",        .has_arg = no_argument },
 246         { .val = 'r',   .name = "rebind",       .has_arg = no_argument },
 247         { .val = 'u',   .name = "update-interval",
 248                                                 .has_arg = required_argument },
 249         { .val = 'u',   .name = "update_interval",
 250                                                 .has_arg = required_argument },
 251         { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
 252         { .name = NULL } };
 253         int                      c, rc;
 254         unsigned long long       value;
 255         unsigned long long       unit;
 256
 257         optind = 0;
 258         while ((c = getopt_long(argc, argv, "A:b:c:f:hiMp:qru:v",
 259                                 long_opts, NULL)) != -1) {
 260                 switch (c) {
 261                 case 'A': {
 262                         char *end = NULL;
 263                         int val = strtol(optarg, &end, 10);
 264
 265                         if (*end != '\0') {
 266                                 rc = -EINVAL;
 267                                 CT_ERROR(rc, "invalid archive-id: '%s'",
 268                                          optarg);
 269                                 return rc;
 270                         }
 271
 272                         if (opt.o_archive_cnt > LL_HSM_MAX_ARCHIVE ||
 273                             val > LL_HSM_MAX_ARCHIVE) {
 274                                 rc = -EINVAL;
 275                                 CT_ERROR(rc, "archive number must be less"
 276                                          " than %zu", LL_HSM_MAX_ARCHIVE + 1);
 277                                 return rc;
 278                         }
 279                         opt.o_archive_id[opt.o_archive_cnt] = val;
 280                         opt.o_archive_cnt++;
 281                         break;
 282                 }
 283                 case 'b': /* -b and -c have both a number with unit as arg */
 284                 case 'c':
 285                         unit = ONE_MB;
 286                         if (llapi_parse_size(optarg, &value, &unit, 0) < 0) {
 287                                 rc = -EINVAL;
 288                                 CT_ERROR(rc, "bad value for -%c '%s'", c,
 289                                          optarg);
 290                                 return rc;
 291                         }
 292                         if (c == 'c')
 293                                 opt.o_chunk_size = value;
 294                         else
 295                                 opt.o_bandwidth = value;
 296                         break;
 297                 case 'f':
 298                         opt.o_event_fifo = optarg;
 299                         break;
 300                 case 'h':
 301                         usage(argv[0], 0);
 302                 case 'i':
 303                         opt.o_action = CA_IMPORT;
 304                         break;
 305                 case 'M':
 306                         opt.o_action = CA_MAXSEQ;
 307                         break;
 308                 case 'p':
 309                         opt.o_hsm_root = optarg;
 310                         break;
 311                 case 'q':
 312                         opt.o_verbose--;
 313                         break;
 314                 case 'r':
 315                         opt.o_action = CA_REBIND;
 316                         break;
 317                 case 'u':
 318                         opt.o_report_int = atoi(optarg);
 319                         if (opt.o_report_int < 0) {
 320                                 rc = -EINVAL;
 321                                 CT_ERROR(rc, "bad value for -%c '%s'", c,
 322                                          optarg);
 323                                 return rc;
 324                         }
 325                         break;
 326                 case 'v':
 327                         opt.o_verbose++;
 328                         break;
 329                 case 0:
 330                         break;
 331                 default:
 332                         return -EINVAL;
 333                 }
 334         }
 335
 336         switch (opt.o_action) {
 337         case CA_IMPORT:
 338                 /* src dst mount_point */
 339                 if (argc != optind + 3) {
 340                         rc = -EINVAL;
 341                         CT_ERROR(rc, "--import requires 2 arguments");
 342                         return rc;
 343                 }
 344                 opt.o_src = argv[optind++];
 345                 opt.o_dst = argv[optind++];
 346                 break;
 347         case CA_REBIND:
 348                 /* FID1 FID2 mount_point or FILE mount_point */
 349                 if (argc == optind + 2) {
 350                         opt.o_src = argv[optind++];
 351                         opt.o_dst = NULL;
 352                 } else if (argc == optind + 3) {
 353                         opt.o_src = argv[optind++];
 354                         opt.o_dst = argv[optind++];
 355                 } else {
 356                         rc = -EINVAL;
 357                         CT_ERROR(rc, "--rebind requires 1 or 2 arguments");
 358                         return rc;
 359                 }
 360                 break;
 361         case CA_MAXSEQ:
 362         default:
 363                 /* just mount point */
 364                 break;
 365         }
 366
 367         if (argc != optind + 1) {
 368                 rc = -EINVAL;
 369                 CT_ERROR(rc, "no mount point specified");
 370                 return rc;
 371         }
 372
 373         opt.o_mnt = argv[optind];
 374         opt.o_mnt_fd = -1;
 375
 376         CT_TRACE("action=%d src=%s dst=%s mount_point=%s",
 377                  opt.o_action, opt.o_src, opt.o_dst, opt.o_mnt);
 378
 379         if (opt.o_hsm_root == NULL) {
 380                 rc = -EINVAL;
 381                 CT_ERROR(rc, "must specify a root directory for the backend");
 382                 return rc;
 383         }
 384
 385         if (opt.o_action == CA_IMPORT) {
 386                 if (opt.o_src && opt.o_src[0] == '/') {
 387                         rc = -EINVAL;
 388                         CT_ERROR(rc,
 389                                  "source path must be relative to HSM root");
 390                         return rc;
 391                 }
 392
 393                 if (opt.o_dst && opt.o_dst[0] != '/') {
 394                         rc = -EINVAL;
 395                         CT_ERROR(rc, "destination path must be absolute");
 396                         return rc;
 397                 }
 398         }
 399
 400         return 0;
 401 }
 402
 403 /* mkdir -p path */
 404 static int ct_mkdir_p(const char *path)
 405 {
 406         char    *saved, *ptr;
 407         int      rc;
 408
 409         ptr = strdup(path);
 410         if (ptr == NULL)
 411                 return -errno;
 412
 413         saved = ptr;
 414         while (*ptr == '/')
 415                 ptr++;
 416
 417         while ((ptr = strchr(ptr, '/')) != NULL) {
 418                 *ptr = '\0';
 419                 rc = mkdir(saved, DIR_PERM);
 420                 *ptr = '/';
 421                 if (rc < 0 && errno != EEXIST) {
 422                         rc = -errno;
 423                         CT_ERROR(rc, "cannot mkdir '%s'", path);
 424                         free(saved);
 425                         return rc;
 426                 }
 427                 ptr++;
 428         }
 429
 430         free(saved);
 431
 432         return 0;
 433 }
 434
 435 static int ct_save_stripe(int src_fd, const char *src, const char *dst)
 436 {
 437         char                     lov_file[PATH_MAX];
 438         char                     lov_buf[XATTR_SIZE_MAX];
 439         struct lov_user_md      *lum;
 440         int                      rc;
 441         int                      fd;
 442         ssize_t                  xattr_size;
 443
 444         snprintf(lov_file, sizeof(lov_file), "%s.lov", dst);
 445         CT_TRACE("saving stripe info of '%s' in %s", src, lov_file);
 446
 447         xattr_size = fgetxattr(src_fd, XATTR_LUSTRE_LOV, lov_buf,
 448                                sizeof(lov_buf));
 449         if (xattr_size < 0) {
 450                 rc = -errno;
 451                 CT_ERROR(rc, "cannot get stripe info on '%s'", src);
 452                 return rc;
 453         }
 454
 455         lum = (struct lov_user_md *)lov_buf;
 456
 457         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
 458             lum->lmm_magic == LOV_USER_MAGIC_V3) {
 459                 /* Set stripe_offset to -1 so that it is not interpreted as a
 460                  * hint on restore. */
 461                 lum->lmm_stripe_offset = -1;
 462         }
 463
 464         fd = open(lov_file, O_TRUNC | O_CREAT | O_WRONLY, FILE_PERM);
 465         if (fd < 0) {
 466                 rc = -errno;
 467                 CT_ERROR(rc, "cannot open '%s'", lov_file);
 468                 goto err_cleanup;
 469         }
 470
 471         rc = write(fd, lum, xattr_size);
 472         if (rc < 0) {
 473                 rc = -errno;
 474                 CT_ERROR(rc, "cannot write %zd bytes to '%s'",
 475                          xattr_size, lov_file);
 476                 close(fd);
 477                 goto err_cleanup;
 478         }
 479
 480         rc = close(fd);
 481         if (rc < 0) {
 482                 rc = -errno;
 483                 CT_ERROR(rc, "cannot close '%s'", lov_file);
 484                 goto err_cleanup;
 485         }
 486
 487         return 0;
 488
 489 err_cleanup:
 490         unlink(lov_file);
 491
 492         return rc;
 493 }
 494
 495 static int ct_load_stripe(const char *src, void *lovea, size_t *lovea_size)
 496 {
 497         char     lov_file[PATH_MAX];
 498         int      rc;
 499         int      fd;
 500
 501         snprintf(lov_file, sizeof(lov_file), "%s.lov", src);
 502         CT_TRACE("reading stripe rules from '%s' for '%s'", lov_file, src);
 503
 504         fd = open(lov_file, O_RDONLY);
 505         if (fd < 0) {
 506                 CT_ERROR(errno, "cannot open '%s'", lov_file);
 507                 return -ENODATA;
 508         }
 509
 510         rc = read(fd, lovea, *lovea_size);
 511         if (rc < 0) {
 512                 CT_ERROR(errno, "cannot read %zu bytes from '%s'",
 513                          *lovea_size, lov_file);
 514                 close(fd);
 515                 return -ENODATA;
 516         }
 517
 518         *lovea_size = rc;
 519         close(fd);
 520
 521         return 0;
 522 }
 523
 524 static int ct_restore_stripe(const char *src, const char *dst, int dst_fd,
 525                              const void *lovea, size_t lovea_size)
 526 {
 527         int     rc;
 528
 529         rc = fsetxattr(dst_fd, XATTR_LUSTRE_LOV, lovea, lovea_size,
 530                        XATTR_CREATE);
 531         if (rc < 0) {
 532                 rc = -errno;
 533                 CT_ERROR(rc, "cannot set lov EA on '%s'", dst);
 534         }
 535
 536         return rc;
 537 }
 538
 539 static int ct_copy_data(struct hsm_copyaction_private *hcp, const char *src,
 540                         const char *dst, int src_fd, int dst_fd,
 541                         const struct hsm_action_item *hai, long hal_flags)
 542 {
 543         struct hsm_extent        he;
 544         __u64                    offset = hai->hai_extent.offset;
 545         struct stat              src_st;
 546         struct stat              dst_st;
 547         char                    *buf = NULL;
 548         __u64                    write_total = 0;
 549         __u64                    length = hai->hai_extent.length;
 550         time_t                   last_report_time;
 551         int                      rc = 0;
 552         double                   start_ct_now = ct_now();
 553         /* Bandwidth Control */
 554         time_t                  start_time;
 555         time_t                  now;
 556         time_t                  last_bw_print;
 557
 558         if (fstat(src_fd, &src_st) < 0) {
 559                 rc = -errno;
 560                 CT_ERROR(rc, "cannot stat '%s'", src);
 561                 return rc;
 562         }
 563
 564         if (!S_ISREG(src_st.st_mode)) {
 565                 rc = -EINVAL;
 566                 CT_ERROR(rc, "'%s' is not a regular file", src);
 567                 return rc;
 568         }
 569
 570         if (hai->hai_extent.offset > (__u64)src_st.st_size) {
 571                 rc = -EINVAL;
 572                 CT_ERROR(rc, "Trying to start reading past end (%ju > "
 573                          "%jd) of '%s' source file",
 574                          (uintmax_t)hai->hai_extent.offset,
 575                          (intmax_t)src_st.st_size, src);
 576                 return rc;
 577         }
 578
 579         if (fstat(dst_fd, &dst_st) < 0) {
 580                 rc = -errno;
 581                 CT_ERROR(rc, "cannot stat '%s'", dst);
 582                 return rc;
 583         }
 584
 585         if (!S_ISREG(dst_st.st_mode)) {
 586                 rc = -EINVAL;
 587                 CT_ERROR(rc, "'%s' is not a regular file", dst);
 588                 return rc;
 589         }
 590
 591         /* Don't read beyond a given extent */
 592         if (length > src_st.st_size - hai->hai_extent.offset)
 593                 length = src_st.st_size - hai->hai_extent.offset;
 594
 595         start_time = last_bw_print = last_report_time = time(NULL);
 596
 597         he.offset = offset;
 598         he.length = 0;
 599         rc = llapi_hsm_action_progress(hcp, &he, length, 0);
 600         if (rc < 0) {
 601                 /* Action has been canceled or something wrong
 602                  * is happening. Stop copying data. */
 603                 CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
 604                          src, dst);
 605                 goto out;
 606         }
 607
 608         errno = 0;
 609
 610         buf = malloc(opt.o_chunk_size);
 611         if (buf == NULL) {
 612                 rc = -ENOMEM;
 613                 goto out;
 614         }
 615
 616         CT_TRACE("start copy of %ju bytes from '%s' to '%s'",
 617                  (uintmax_t)length, src, dst);
 618
 619         while (write_total < length) {
 620                 ssize_t rsize;
 621                 ssize_t wsize;
 622                 int     chunk = (length - write_total > opt.o_chunk_size) ?
 623                                  opt.o_chunk_size : length - write_total;
 624
 625                 rsize = pread(src_fd, buf, chunk, offset);
 626                 if (rsize == 0)
 627                         /* EOF */
 628                         break;
 629
 630                 if (rsize < 0) {
 631                         rc = -errno;
 632                         CT_ERROR(rc, "cannot read from '%s'", src);
 633                         break;
 634                 }
 635
 636                 wsize = pwrite(dst_fd, buf, rsize, offset);
 637                 if (wsize < 0) {
 638                         rc = -errno;
 639                         CT_ERROR(rc, "cannot write to '%s'", dst);
 640                         break;
 641                 }
 642
 643                 write_total += wsize;
 644                 offset += wsize;
 645
 646                 now = time(NULL);
 647                 /* sleep if needed, to honor bandwidth limits */
 648                 if (opt.o_bandwidth != 0) {
 649                         unsigned long long write_theory;
 650
 651                         write_theory = (now - start_time) * opt.o_bandwidth;
 652
 653                         if (write_theory < write_total) {
 654                                 unsigned long long      excess;
 655                                 struct timespec         delay;
 656
 657                                 excess = write_total - write_theory;
 658
 659                                 delay.tv_sec = excess / opt.o_bandwidth;
 660                                 delay.tv_nsec = (excess % opt.o_bandwidth) *
 661                                         NSEC_PER_SEC / opt.o_bandwidth;
 662
 663                                 if (now >= last_bw_print + opt.o_report_int) {
 664                                         CT_TRACE("bandwith control: %lluB/s "
 665                                                  "excess=%llu sleep for "
 666                                                  "%lld.%09lds",
 667                                                  opt.o_bandwidth, excess,
 668                                                  (long long)delay.tv_sec,
 669                                                  delay.tv_nsec);
 670                                         last_bw_print = now;
 671                                 }
 672
 673                                 do {
 674                                         rc = nanosleep(&delay, &delay);
 675                                 } while (rc < 0 && errno == EINTR);
 676                                 if (rc < 0) {
 677                                         CT_ERROR(errno, "delay for bandwidth "
 678                                                  "control failed to sleep: "
 679                                                  "residual=%lld.%09lds",
 680                                                  (long long)delay.tv_sec,
 681                                                  delay.tv_nsec);
 682                                         rc = 0;
 683                                 }
 684                         }
 685                 }
 686
 687                 now = time(NULL);
 688                 if (now >= last_report_time + opt.o_report_int) {
 689                         last_report_time = now;
 690                         CT_TRACE("%%%ju ", (uintmax_t)(100 * write_total / length));
 691                         /* only give the length of the write since the last
 692                          * progress report */
 693                         he.length = offset - he.offset;
 694                         rc = llapi_hsm_action_progress(hcp, &he, length, 0);
 695                         if (rc < 0) {
 696                                 /* Action has been canceled or something wrong
 697                                  * is happening. Stop copying data. */
 698                                 CT_ERROR(rc, "progress ioctl for copy"
 699                                          " '%s'->'%s' failed", src, dst);
 700                                 goto out;
 701                         }
 702                         he.offset = offset;
 703                 }
 704                 rc = 0;
 705         }
 706
 707 out:
 708         /*
 709          * truncate restored file
 710          * size is taken from the archive this is done to support
 711          * restore after a force release which leaves the file with the
 712          * wrong size (can big bigger than the new size)
 713          */
 714         if ((hai->hai_action == HSMA_RESTORE) &&
 715             (src_st.st_size < dst_st.st_size)) {
 716                 /*
 717                  * make sure the file is on disk before reporting success.
 718                  */
 719                 rc = ftruncate(dst_fd, src_st.st_size);
 720                 if (rc < 0) {
 721                         rc = -errno;
 722                         CT_ERROR(rc, "cannot truncate '%s' to size %jd",
 723                                  dst, (intmax_t)src_st.st_size);
 724                         err_major++;
 725                 }
 726         }
 727
 728         if (buf != NULL)
 729                 free(buf);
 730
 731         CT_TRACE("copied %ju bytes in %f seconds",
 732                  (uintmax_t)length, ct_now() - start_ct_now);
 733
 734         return rc;
 735 }
 736
 737 /* Copy file attributes from file src to file dest */
 738 static int ct_copy_attr(const char *src, const char *dst, int src_fd,
 739                         int dst_fd)
 740 {
 741         struct stat     st;
 742         struct timeval  times[2];
 743         int             rc;
 744
 745         if (fstat(src_fd, &st) < 0) {
 746                 rc = -errno;
 747                 CT_ERROR(rc, "cannot stat '%s'", src);
 748                 return rc;
 749         }
 750
 751         times[0].tv_sec = st.st_atime;
 752         times[0].tv_usec = 0;
 753         times[1].tv_sec = st.st_mtime;
 754         times[1].tv_usec = 0;
 755         if (fchmod(dst_fd, st.st_mode) < 0 ||
 756             fchown(dst_fd, st.st_uid, st.st_gid) < 0 ||
 757             futimes(dst_fd, times) < 0) {
 758                 rc = -errno;
 759                 CT_ERROR(rc, "cannot set attributes of '%s'", src);
 760                 return rc;
 761         }
 762
 763         return 0;
 764 }
 765
 766 static int ct_copy_xattr(const char *src, const char *dst, int src_fd,
 767                          int dst_fd, bool is_restore)
 768 {
 769         char     list[XATTR_LIST_MAX];
 770         char     value[XATTR_SIZE_MAX];
 771         char    *name;
 772         ssize_t  list_len;
 773         int      rc;
 774
 775         list_len = flistxattr(src_fd, list, sizeof(list));
 776         if (list_len < 0)
 777                 return -errno;
 778
 779         name = list;
 780         while (name < list + list_len) {
 781                 rc = fgetxattr(src_fd, name, value, sizeof(value));
 782                 if (rc < 0)
 783                         return -errno;
 784
 785                 /* when we restore, we do not restore lustre xattr */
 786                 if (!is_restore ||
 787                     (strncmp(XATTR_TRUSTED_PREFIX, name,
 788                              sizeof(XATTR_TRUSTED_PREFIX) - 1) != 0)) {
 789                         rc = fsetxattr(dst_fd, name, value, rc, 0);
 790                         CT_TRACE("fsetxattr of '%s' on '%s' rc=%d (%s)",
 791                                  name, dst, rc, strerror(errno));
 792                         /* lustre.* attrs aren't supported on other FS's */
 793                         if (rc < 0 && errno != EOPNOTSUPP) {
 794                                 rc = -errno;
 795                                 CT_ERROR(rc, "cannot set extended attribute"
 796                                          " '%s' of '%s'",
 797                                          name, dst);
 798                                 return rc;
 799                         }
 800                 }
 801                 name += strlen(name) + 1;
 802         }
 803
 804         return 0;
 805 }
 806
 807 static int ct_path_lustre(char *buf, int sz, const char *mnt,
 808                           const struct lu_fid *fid)
 809 {
 810         return snprintf(buf, sz, "%s/%s/fid/"DFID_NOBRACE, mnt,
 811                         dot_lustre_name, PFID(fid));
 812 }
 813
 814 static int ct_path_archive(char *buf, int sz, const char *archive_dir,
 815                            const struct lu_fid *fid)
 816 {
 817         return snprintf(buf, sz, "%s/%04x/%04x/%04x/%04x/%04x/%04x/"
 818                         DFID_NOBRACE, archive_dir,
 819                         (fid)->f_oid       & 0xFFFF,
 820                         (fid)->f_oid >> 16 & 0xFFFF,
 821                         (unsigned int)((fid)->f_seq       & 0xFFFF),
 822                         (unsigned int)((fid)->f_seq >> 16 & 0xFFFF),
 823                         (unsigned int)((fid)->f_seq >> 32 & 0xFFFF),
 824                         (unsigned int)((fid)->f_seq >> 48 & 0xFFFF),
 825                         PFID(fid));
 826 }
 827
 828 static bool ct_is_retryable(int err)
 829 {
 830         return err == -ETIMEDOUT;
 831 }
 832
 833 static int ct_begin_restore(struct hsm_copyaction_private **phcp,
 834                             const struct hsm_action_item *hai,
 835                             int mdt_index, int open_flags)
 836 {
 837         char     src[PATH_MAX];
 838         int      rc;
 839
 840         rc = llapi_hsm_action_begin(phcp, ctdata, hai, mdt_index, open_flags,
 841                                     false);
 842         if (rc < 0) {
 843                 ct_path_lustre(src, sizeof(src), opt.o_mnt, &hai->hai_fid);
 844                 CT_ERROR(rc, "llapi_hsm_action_begin() on '%s' failed", src);
 845         }
 846
 847         return rc;
 848 }
 849
 850 static int ct_begin(struct hsm_copyaction_private **phcp,
 851                     const struct hsm_action_item *hai)
 852 {
 853         /* Restore takes specific parameters. Call the same function w/ default
 854          * values for all other operations. */
 855         return ct_begin_restore(phcp, hai, -1, 0);
 856 }
 857
 858 static int ct_fini(struct hsm_copyaction_private **phcp,
 859                    const struct hsm_action_item *hai, int hp_flags, int ct_rc)
 860 {
 861         struct hsm_copyaction_private   *hcp;
 862         char                             lstr[PATH_MAX];
 863         int                              rc;
 864
 865         CT_TRACE("Action completed, notifying coordinator "
 866                  "cookie=%#jx, FID="DFID", hp_flags=%d err=%d",
 867                  (uintmax_t)hai->hai_cookie, PFID(&hai->hai_fid),
 868                  hp_flags, -ct_rc);
 869
 870         ct_path_lustre(lstr, sizeof(lstr), opt.o_mnt, &hai->hai_fid);
 871
 872         if (phcp == NULL || *phcp == NULL) {
 873                 rc = llapi_hsm_action_begin(&hcp, ctdata, hai, -1, 0, true);
 874                 if (rc < 0) {
 875                         CT_ERROR(rc, "llapi_hsm_action_begin() on '%s' failed",
 876                                  lstr);
 877                         return rc;
 878                 }
 879                 phcp = &hcp;
 880         }
 881
 882         rc = llapi_hsm_action_end(phcp, &hai->hai_extent, hp_flags, abs(ct_rc));
 883         if (rc == -ECANCELED)
 884                 CT_ERROR(rc, "completed action on '%s' has been canceled: "
 885                          "cookie=%#jx, FID="DFID, lstr,
 886                          (uintmax_t)hai->hai_cookie, PFID(&hai->hai_fid));
 887         else if (rc < 0)
 888                 CT_ERROR(rc, "llapi_hsm_action_end() on '%s' failed", lstr);
 889         else
 890                 CT_TRACE("llapi_hsm_action_end() on '%s' ok (rc=%d)",
 891                          lstr, rc);
 892
 893         return rc;
 894 }
 895
 896 static int ct_archive(const struct hsm_action_item *hai, const long hal_flags)
 897 {
 898         struct hsm_copyaction_private   *hcp = NULL;
 899         char                             src[PATH_MAX];
 900         char                             dst[PATH_MAX + 4] = "";
 901         char                             root[PATH_MAX] = "";
 902         int                              rc;
 903         int                              rcf = 0;
 904         bool                             rename_needed = false;
 905         int                              hp_flags = 0;
 906         int                              open_flags;
 907         int                              src_fd = -1;
 908         int                              dst_fd = -1;
 909
 910         rc = ct_begin(&hcp, hai);
 911         if (rc < 0)
 912                 goto fini_major;
 913
 914         /* we fill archive so:
 915          * source = data FID
 916          * destination = lustre FID
 917          */
 918         ct_path_lustre(src, sizeof(src), opt.o_mnt, &hai->hai_dfid);
 919         ct_path_archive(root, sizeof(root), opt.o_hsm_root, &hai->hai_fid);
 920         if (hai->hai_extent.length == -1) {
 921                 /* whole file, write it to tmp location and atomically
 922                  * replace old archived file */
 923                 snprintf(dst, sizeof(dst), "%s_tmp", root);
 924                 /* we cannot rely on the same test because ct_copy_data()
 925                  * updates hai_extent.length */
 926                 rename_needed = true;
 927         } else {
 928                 snprintf(dst, sizeof(dst), "%s", root);
 929         }
 930
 931         CT_TRACE("archiving '%s' to '%s'", src, dst);
 932
 933         if (opt.o_dry_run) {
 934                 rc = 0;
 935                 goto fini_major;
 936         }
 937
 938         rc = ct_mkdir_p(dst);
 939         if (rc < 0) {
 940                 CT_ERROR(rc, "mkdir_p '%s' failed", dst);
 941                 goto fini_major;
 942         }
 943
 944         src_fd = llapi_hsm_action_get_fd(hcp);
 945         if (src_fd < 0) {
 946                 rc = src_fd;
 947                 CT_ERROR(rc, "cannot open '%s' for read", src);
 948                 goto fini_major;
 949         }
 950
 951         open_flags = O_WRONLY | O_NOFOLLOW;
 952         /* If extent is specified, don't truncate an old archived copy */
 953         open_flags |= ((hai->hai_extent.length == -1) ? O_TRUNC : 0) | O_CREAT;
 954
 955         dst_fd = open(dst, open_flags, FILE_PERM);
 956         if (dst_fd == -1) {
 957                 rc = -errno;
 958                 CT_ERROR(rc, "cannot open '%s' for write", dst);
 959                 goto fini_major;
 960         }
 961
 962         /* saving stripe is not critical */
 963         rc = ct_save_stripe(src_fd, src, dst);
 964         if (rc < 0)
 965                 CT_ERROR(rc, "cannot save file striping info of '%s' in '%s'",
 966                          src, dst);
 967
 968         rc = ct_copy_data(hcp, src, dst, src_fd, dst_fd, hai, hal_flags);
 969         if (rc < 0) {
 970                 CT_ERROR(rc, "data copy failed from '%s' to '%s'", src, dst);
 971                 goto fini_major;
 972         }
 973
 974         rc = fsync(dst_fd);
 975         if (rc < 0) {
 976                 rc = -errno;
 977                 CT_ERROR(rc, "cannot flush '%s' archive file '%s'", src, dst);
 978                 goto fini_major;
 979         }
 980
 981         CT_TRACE("data archiving for '%s' to '%s' done", src, dst);
 982
 983         /* attrs will remain on the MDS; no need to copy them, except possibly
 984           for disaster recovery */
 985         if (opt.o_copy_attrs) {
 986                 rc = ct_copy_attr(src, dst, src_fd, dst_fd);
 987                 if (rc < 0) {
 988                         CT_ERROR(rc, "cannot copy attr of '%s' to '%s'",
 989                                  src, dst);
 990                         rcf = rc;
 991                 }
 992                 CT_TRACE("attr file for '%s' saved to archive '%s'",
 993                          src, dst);
 994         }
 995
 996         /* xattrs will remain on the MDS; no need to copy them, except possibly
 997          for disaster recovery */
 998         if (opt.o_copy_xattrs) {
 999                 rc = ct_copy_xattr(src, dst, src_fd, dst_fd, false);
1000                 if (rc < 0) {
1001                         CT_ERROR(rc, "cannot copy xattr of '%s' to '%s'",
1002                                  src, dst);
1003                         rcf = rcf ? rcf : rc;
1004                 }
1005                 CT_TRACE("xattr file for '%s' saved to archive '%s'",
1006                          src, dst);
1007         }
1008
1009         if (rename_needed == true) {
1010                 char     tmp_src[PATH_MAX];
1011                 char     tmp_dst[PATH_MAX];
1012
1013                 /* atomically replace old archived file */
1014                 ct_path_archive(src, sizeof(src), opt.o_hsm_root,
1015                                 &hai->hai_fid);
1016                 rc = rename(dst, src);
1017                 if (rc < 0) {
1018                         rc = -errno;
1019                         CT_ERROR(rc, "cannot rename '%s' to '%s'", dst, src);
1020                         goto fini_major;
1021                 }
1022                 /* rename lov file */
1023                 snprintf(tmp_src, sizeof(tmp_src), "%s.lov", src);
1024                 snprintf(tmp_dst, sizeof(tmp_dst), "%s.lov", dst);
1025                 rc = rename(tmp_dst, tmp_src);
1026                 if (rc < 0)
1027                         CT_ERROR(errno, "cannot rename '%s' to '%s'",
1028                                  tmp_dst, tmp_src);
1029         }
1030
1031         if (opt.o_shadow_tree) {
1032                 /* Create a namespace of softlinks that shadows the original
1033                  * Lustre namespace.  This will only be current at
1034                  * time-of-archive (won't follow renames).
1035                  * WARNING: release won't kill these links; a manual
1036                  * cleanup of dead links would be required.
1037                  */
1038                 char             buf[PATH_MAX];
1039                 long long        recno = -1;
1040                 int              linkno = 0;
1041                 char            *ptr;
1042                 int              depth = 0;
1043                 ssize_t          sz;
1044
1045                 sprintf(buf, DFID, PFID(&hai->hai_fid));
1046                 sprintf(src, "%s/shadow/", opt.o_hsm_root);
1047
1048                 ptr = opt.o_hsm_root;
1049                 while (*ptr)
1050                         (*ptr++ == '/') ? depth-- : 0;
1051
1052                 rc = llapi_fid2path(opt.o_mnt, buf, src + strlen(src),
1053                                     sizeof(src) - strlen(src), &recno, &linkno);
1054                 if (rc < 0) {
1055                         CT_ERROR(rc, "cannot get FID of '%s'", buf);
1056                         rcf = rcf ? rcf : rc;
1057                         goto fini_minor;
1058                 }
1059
1060                 /* Figure out how many parent dirs to symlink back */
1061                 ptr = src;
1062                 while (*ptr)
1063                         (*ptr++ == '/') ? depth++ : 0;
1064                 sprintf(buf, "..");
1065                 while (--depth > 1)
1066                         strcat(buf, "/..");
1067
1068                 ct_path_archive(dst, sizeof(dst), buf, &hai->hai_fid);
1069
1070                 if (ct_mkdir_p(src)) {
1071                         CT_ERROR(errno, "mkdir_p '%s' failed", src);
1072                         rcf = rcf ? rcf : -errno;
1073                         goto fini_minor;
1074                 }
1075                 /* symlink already exists ? */
1076                 sz = readlink(src, buf, sizeof(buf));
1077                 /* detect truncation */
1078                 if (sz == sizeof(buf)) {
1079                         rcf = rcf ? rcf : -E2BIG;
1080                         CT_ERROR(rcf, "readlink '%s' truncated", src);
1081                         goto fini_minor;
1082                 }
1083                 if (sz >= 0) {
1084                         buf[sz] = '\0';
1085                         if (sz == 0 || strncmp(buf, dst, sz) != 0) {
1086                                 if (unlink(src) && errno != ENOENT) {
1087                                         CT_ERROR(errno,
1088                                                  "cannot unlink symlink '%s'",
1089                                                  src);
1090                                         rcf = rcf ? rcf : -errno;
1091                                         goto fini_minor;
1092                                 }
1093                                 /* unlink old symlink done */
1094                                 CT_TRACE("remove old symlink '%s' pointing"
1095                                          " to '%s'", src, buf);
1096                         } else {
1097                                 /* symlink already ok */
1098                                 CT_TRACE("symlink '%s' already pointing"
1099                                          " to '%s'", src, dst);
1100                                 rcf = 0;
1101                                 goto fini_minor;
1102                         }
1103                 }
1104                 if (symlink(dst, src)) {
1105                         CT_ERROR(errno, "cannot symlink '%s' to '%s'",
1106                                  src, dst);
1107                         rcf = rcf ? rcf : -errno;
1108                         goto fini_minor;
1109                 }
1110                 CT_TRACE("symlink '%s' to '%s' done", src, dst);
1111         }
1112 fini_minor:
1113         if (rcf)
1114                 err_minor++;
1115         goto out;
1116
1117
1118 fini_major:
1119         err_major++;
1120
1121         unlink(dst);
1122         if (ct_is_retryable(rc))
1123                 hp_flags |= HP_FLAG_RETRY;
1124
1125         rcf = rc;
1126
1127 out:
1128         if (!(src_fd < 0))
1129                 close(src_fd);
1130
1131         if (!(dst_fd < 0))
1132                 close(dst_fd);
1133
1134         rc = ct_fini(&hcp, hai, hp_flags, rcf);
1135
1136         return rc;
1137 }
1138
1139 static int ct_restore(const struct hsm_action_item *hai, const long hal_flags)
1140 {
1141         struct hsm_copyaction_private   *hcp = NULL;
1142         char                             src[PATH_MAX];
1143         char                             dst[PATH_MAX];
1144         char                             lov_buf[XATTR_SIZE_MAX];
1145         size_t                           lov_size = sizeof(lov_buf);
1146         int                              rc;
1147         int                              hp_flags = 0;
1148         int                              src_fd = -1;
1149         int                              dst_fd = -1;
1150         int                              mdt_index = -1;
1151         int                              open_flags = 0;
1152         bool                             set_lovea;
1153         struct lu_fid                    dfid;
1154         /* we fill lustre so:
1155          * source = lustre FID in the backend
1156          * destination = data FID = volatile file
1157          */
1158
1159         /* build backend file name from released file FID */
1160         ct_path_archive(src, sizeof(src), opt.o_hsm_root, &hai->hai_fid);
1161
1162         rc = llapi_get_mdt_index_by_fid(opt.o_mnt_fd, &hai->hai_fid,
1163                                         &mdt_index);
1164         if (rc < 0) {
1165                 CT_ERROR(rc, "cannot get mdt index "DFID"",
1166                          PFID(&hai->hai_fid));
1167                 return rc;
1168         }
1169         /* restore loads and sets the LOVEA w/o interpreting it to avoid
1170          * dependency on the structure format. */
1171         rc = ct_load_stripe(src, lov_buf, &lov_size);
1172         if (rc < 0) {
1173                 CT_WARN("cannot get stripe rules for '%s' (%s), use default",
1174                         src, strerror(-rc));
1175                 set_lovea = false;
1176         } else {
1177                 open_flags |= O_LOV_DELAY_CREATE;
1178                 set_lovea = true;
1179         }
1180
1181         rc = ct_begin_restore(&hcp, hai, mdt_index, open_flags);
1182         if (rc < 0)
1183                 goto fini;
1184
1185         /* get the FID of the volatile file */
1186         rc = llapi_hsm_action_get_dfid(hcp, &dfid);
1187         if (rc < 0) {
1188                 CT_ERROR(rc, "restoring "DFID
1189                          ", cannot get FID of created volatile file",
1190                          PFID(&hai->hai_fid));
1191                 goto fini;
1192         }
1193
1194         /* build volatile "file name", for messages */
1195         snprintf(dst, sizeof(dst), "{VOLATILE}="DFID, PFID(&dfid));
1196
1197         CT_TRACE("restoring data from '%s' to '%s'", src, dst);
1198
1199         if (opt.o_dry_run) {
1200                 rc = 0;
1201                 goto fini;
1202         }
1203
1204         src_fd = open(src, O_RDONLY | O_NOATIME | O_NOFOLLOW);
1205         if (src_fd < 0) {
1206                 rc = -errno;
1207                 CT_ERROR(rc, "cannot open '%s' for read", src);
1208                 goto fini;
1209         }
1210
1211         dst_fd = llapi_hsm_action_get_fd(hcp);
1212         if (dst_fd < 0) {
1213                 rc = dst_fd;
1214                 CT_ERROR(rc, "cannot open '%s' for write", dst);
1215                 goto fini;
1216         }
1217
1218         if (set_lovea) {
1219                 /* the layout cannot be allocated through .fid so we have to
1220                  * restore a layout */
1221                 rc = ct_restore_stripe(src, dst, dst_fd, lov_buf, lov_size);
1222                 if (rc < 0) {
1223                         CT_ERROR(rc, "cannot restore file striping info"
1224                                  " for '%s' from '%s'", dst, src);
1225                         err_major++;
1226                         goto fini;
1227                 }
1228         }
1229
1230         rc = ct_copy_data(hcp, src, dst, src_fd, dst_fd, hai, hal_flags);
1231         if (rc < 0) {
1232                 CT_ERROR(rc, "cannot copy data from '%s' to '%s'",
1233                          src, dst);
1234                 err_major++;
1235                 if (ct_is_retryable(rc))
1236                         hp_flags |= HP_FLAG_RETRY;
1237                 goto fini;
1238         }
1239
1240         CT_TRACE("data restore from '%s' to '%s' done", src, dst);
1241
1242 fini:
1243         rc = ct_fini(&hcp, hai, hp_flags, rc);
1244
1245         /* object swaping is done by cdt at copy end, so close of volatile file
1246          * cannot be done before */
1247         if (!(src_fd < 0))
1248                 close(src_fd);
1249
1250         if (!(dst_fd < 0))
1251                 close(dst_fd);
1252
1253         return rc;
1254 }
1255
1256 static int ct_remove(const struct hsm_action_item *hai, const long hal_flags)
1257 {
1258         struct hsm_copyaction_private   *hcp = NULL;
1259         char                             dst[PATH_MAX], attr[PATH_MAX + 4];
1260         int                              rc;
1261
1262         rc = ct_begin(&hcp, hai);
1263         if (rc < 0)
1264                 goto fini;
1265
1266         ct_path_archive(dst, sizeof(dst), opt.o_hsm_root, &hai->hai_fid);
1267
1268         CT_TRACE("removing file '%s'", dst);
1269
1270         if (opt.o_dry_run) {
1271                 rc = 0;
1272                 goto fini;
1273         }
1274
1275         rc = unlink(dst);
1276         if (rc < 0) {
1277                 rc = -errno;
1278                 CT_ERROR(rc, "cannot unlink '%s'", dst);
1279                 err_minor++;
1280                 goto fini;
1281         }
1282
1283         snprintf(attr, sizeof(attr), "%s.lov", dst);
1284         rc = unlink(attr);
1285         if (rc < 0) {
1286                 rc = -errno;
1287                 CT_ERROR(rc, "cannot unlink '%s'", attr);
1288                 err_minor++;
1289                 goto fini;
1290         }
1291
1292 fini:
1293         rc = ct_fini(&hcp, hai, 0, rc);
1294
1295         return rc;
1296 }
1297
1298 static int ct_process_item(struct hsm_action_item *hai, const long hal_flags)
1299 {
1300         int     rc = 0;
1301
1302         if (opt.o_verbose >= LLAPI_MSG_INFO || opt.o_dry_run) {
1303                 /* Print the original path */
1304                 char            fid[128];
1305                 char            path[PATH_MAX];
1306                 long long       recno = -1;
1307                 int             linkno = 0;
1308
1309                 sprintf(fid, DFID, PFID(&hai->hai_fid));
1310                 CT_TRACE("'%s' action %s reclen %d, cookie=%#jx",
1311                          fid, hsm_copytool_action2name(hai->hai_action),
1312                          hai->hai_len, (uintmax_t)hai->hai_cookie);
1313                 rc = llapi_fid2path(opt.o_mnt, fid, path,
1314                                     sizeof(path), &recno, &linkno);
1315                 if (rc < 0)
1316                         CT_ERROR(rc, "cannot get path of FID %s", fid);
1317                 else
1318                         CT_TRACE("processing file '%s'", path);
1319         }
1320
1321         switch (hai->hai_action) {
1322         /* set err_major, minor inside these functions */
1323         case HSMA_ARCHIVE:
1324                 rc = ct_archive(hai, hal_flags);
1325                 break;
1326         case HSMA_RESTORE:
1327                 rc = ct_restore(hai, hal_flags);
1328                 break;
1329         case HSMA_REMOVE:
1330                 rc = ct_remove(hai, hal_flags);
1331                 break;
1332         case HSMA_CANCEL:
1333                 CT_TRACE("cancel not implemented for file system '%s'",
1334                          opt.o_mnt);
1335                 /* Don't report progress to coordinator for this cookie:
1336                  * the copy function will get ECANCELED when reporting
1337                  * progress. */
1338                 err_minor++;
1339                 return 0;
1340                 break;
1341         default:
1342                 rc = -EINVAL;
1343                 CT_ERROR(rc, "unknown action %d, on '%s'", hai->hai_action,
1344                          opt.o_mnt);
1345                 err_minor++;
1346                 ct_fini(NULL, hai, 0, rc);
1347         }
1348
1349         return 0;
1350 }
1351
1352 struct ct_th_data {
1353         long                     hal_flags;
1354         struct hsm_action_item  *hai;
1355 };
1356
1357 static void *ct_thread(void *data)
1358 {
1359         struct ct_th_data *cttd = data;
1360         int rc;
1361
1362         rc = ct_process_item(cttd->hai, cttd->hal_flags);
1363
1364         free(cttd->hai);
1365         free(cttd);
1366         pthread_exit((void *)(intptr_t)rc);
1367 }
1368
1369 static int ct_process_item_async(const struct hsm_action_item *hai,
1370                                  long hal_flags)
1371 {
1372         pthread_attr_t           attr;
1373         pthread_t                thread;
1374         struct ct_th_data       *data;
1375         int                      rc;
1376
1377         data = malloc(sizeof(*data));
1378         if (data == NULL)
1379                 return -ENOMEM;
1380
1381         data->hai = malloc(hai->hai_len);
1382         if (data->hai == NULL) {
1383                 free(data);
1384                 return -ENOMEM;
1385         }
1386
1387         memcpy(data->hai, hai, hai->hai_len);
1388         data->hal_flags = hal_flags;
1389
1390         rc = pthread_attr_init(&attr);
1391         if (rc != 0) {
1392                 CT_ERROR(rc, "pthread_attr_init failed for '%s' service",
1393                          opt.o_mnt);
1394                 free(data->hai);
1395                 free(data);
1396                 return -rc;
1397         }
1398
1399         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
1400
1401         rc = pthread_create(&thread, &attr, ct_thread, data);
1402         if (rc != 0)
1403                 CT_ERROR(rc, "cannot create thread for '%s' service",
1404                          opt.o_mnt);
1405
1406         pthread_attr_destroy(&attr);
1407         return 0;
1408 }
1409
1410 static int ct_import_one(const char *src, const char *dst)
1411 {
1412         char            newarc[PATH_MAX];
1413         struct lu_fid   fid;
1414         struct stat     st;
1415         int             rc;
1416
1417         CT_TRACE("importing '%s' from '%s'", dst, src);
1418
1419         if (stat(src, &st) < 0) {
1420                 rc = -errno;
1421                 CT_ERROR(rc, "cannot stat '%s'", src);
1422                 return rc;
1423         }
1424
1425         if (opt.o_dry_run)
1426                 return 0;
1427
1428         rc = llapi_hsm_import(dst,
1429                               opt.o_archive_cnt ? opt.o_archive_id[0] : 0,
1430                               &st, 0, 0, 0, 0, NULL, &fid);
1431         if (rc < 0) {
1432                 CT_ERROR(rc, "cannot import '%s' from '%s'", dst, src);
1433                 return rc;
1434         }
1435
1436         ct_path_archive(newarc, sizeof(newarc), opt.o_hsm_root, &fid);
1437
1438         rc = ct_mkdir_p(newarc);
1439         if (rc < 0) {
1440                 CT_ERROR(rc, "mkdir_p '%s' failed", newarc);
1441                 err_major++;
1442                 return rc;
1443
1444         }
1445
1446         /* Lots of choices now: mv, ln, ln -s ? */
1447         rc = link(src, newarc); /* hardlink */
1448         if (rc < 0) {
1449                 rc = -errno;
1450                 CT_ERROR(rc, "cannot link '%s' to '%s'", newarc, src);
1451                 err_major++;
1452                 return rc;
1453         }
1454         CT_TRACE("imported '%s' from '%s'=='%s'", dst, newarc, src);
1455
1456         return 0;
1457 }
1458
1459 static char *path_concat(const char *dirname, const char *basename)
1460 {
1461         char    *result;
1462         int      rc;
1463
1464         rc = asprintf(&result, "%s/%s", dirname, basename);
1465         if (rc < 0)
1466                 return NULL;
1467
1468         return result;
1469 }
1470
1471 static int ct_import_fid(const struct lu_fid *import_fid)
1472 {
1473         char    fid_path[PATH_MAX];
1474         int     rc;
1475
1476         ct_path_lustre(fid_path, sizeof(fid_path), opt.o_mnt, import_fid);
1477         rc = access(fid_path, F_OK);
1478         if (rc == 0 || errno != ENOENT) {
1479                 rc = (errno == 0) ? -EEXIST : -errno;
1480                 CT_ERROR(rc, "cannot import '"DFID"'", PFID(import_fid));
1481                 return rc;
1482         }
1483
1484         ct_path_archive(fid_path, sizeof(fid_path), opt.o_hsm_root,
1485                         import_fid);
1486
1487         CT_TRACE("Resolving "DFID" to %s", PFID(import_fid), fid_path);
1488
1489         return ct_import_one(fid_path, opt.o_dst);
1490 }
1491
1492 static int ct_import_recurse(const char *relpath)
1493 {
1494         DIR             *dir;
1495         struct dirent   *ent;
1496         char            *srcpath, *newpath;
1497         struct lu_fid    import_fid;
1498         int              rc;
1499
1500         if (relpath == NULL)
1501                 return -EINVAL;
1502
1503         /* Is relpath a FID? In which case SFID should expand to three
1504          * elements. */
1505         rc = sscanf(relpath, SFID, RFID(&import_fid));
1506         if (rc == 3)
1507                 return ct_import_fid(&import_fid);
1508
1509         srcpath = path_concat(opt.o_hsm_root, relpath);
1510         if (srcpath == NULL) {
1511                 err_major++;
1512                 return -ENOMEM;
1513         }
1514
1515         dir = opendir(srcpath);
1516         if (dir == NULL) {
1517                 /* Not a dir, or error */
1518                 if (errno == ENOTDIR) {
1519                         /* Single regular file case, treat o_dst as absolute
1520                            final location. */
1521                         rc = ct_import_one(srcpath, opt.o_dst);
1522                 } else {
1523                         rc = -errno;
1524                         CT_ERROR(rc, "cannot opendir '%s'", srcpath);
1525                         err_major++;
1526                 }
1527                 free(srcpath);
1528                 return rc;
1529         }
1530         free(srcpath);
1531
1532         while ((ent = readdir(dir)) != NULL) {
1533                 if (!strcmp(ent->d_name, ".") ||
1534                     !strcmp(ent->d_name, ".."))
1535                         continue;
1536
1537                 /* New relative path */
1538                 newpath = path_concat(relpath, ent->d_name);
1539                 if (newpath == NULL) {
1540                         err_major++;
1541                         rc = -ENOMEM;
1542                         goto out;
1543                 }
1544
1545                 if (ent->d_type == DT_DIR) {
1546                         rc = ct_import_recurse(newpath);
1547                 } else {
1548                         char src[PATH_MAX];
1549                         char dst[PATH_MAX];
1550
1551                         sprintf(src, "%s/%s", opt.o_hsm_root, newpath);
1552                         sprintf(dst, "%s/%s", opt.o_dst, newpath);
1553                         /* Make the target dir in the Lustre fs */
1554                         rc = ct_mkdir_p(dst);
1555                         if (rc == 0) {
1556                                 /* Import the file */
1557                                 rc = ct_import_one(src, dst);
1558                         } else {
1559                                 CT_ERROR(rc, "ct_mkdir_p '%s' failed", dst);
1560                                 err_major++;
1561                         }
1562                 }
1563
1564                 if (rc != 0) {
1565                         CT_ERROR(rc, "cannot import '%s'", newpath);
1566                         if (err_major && opt.o_abort_on_error) {
1567                                 free(newpath);
1568                                 goto out;
1569                         }
1570                 }
1571                 free(newpath);
1572         }
1573
1574         rc = 0;
1575 out:
1576         closedir(dir);
1577         return rc;
1578 }
1579
1580 static int ct_rebind_one(const struct lu_fid *old_fid,
1581                          const struct lu_fid *new_fid)
1582 {
1583         char    src[PATH_MAX];
1584         char    dst[PATH_MAX];
1585         int     rc;
1586
1587         CT_TRACE("rebind "DFID" to "DFID, PFID(old_fid), PFID(new_fid));
1588
1589         ct_path_archive(src, sizeof(src), opt.o_hsm_root, old_fid);
1590         ct_path_archive(dst, sizeof(dst), opt.o_hsm_root, new_fid);
1591
1592         if (!opt.o_dry_run) {
1593                 char src_attr[PATH_MAX + 4];
1594                 char dst_attr[PATH_MAX + 4];
1595
1596                 ct_mkdir_p(dst);
1597                 if (rename(src, dst)) {
1598                         rc = -errno;
1599                         CT_ERROR(rc, "cannot rename '%s' to '%s'", src, dst);
1600                         return -errno;
1601                 }
1602                 /* rename lov file */
1603                 snprintf(src_attr, sizeof(src_attr), "%s.lov", src);
1604                 snprintf(dst_attr, sizeof(dst_attr), "%s.lov", dst);
1605                 if (rename(src_attr, dst_attr))
1606                         CT_ERROR(errno, "cannot rename '%s' to '%s'",
1607                                  src_attr, dst_attr);
1608
1609         }
1610         return 0;
1611 }
1612
1613 static bool fid_is_file(struct lu_fid *fid)
1614 {
1615         return fid_is_norm(fid) || fid_is_igif(fid);
1616 }
1617
1618 static bool should_ignore_line(const char *line)
1619 {
1620         int     i;
1621
1622         for (i = 0; line[i] != '\0'; i++) {
1623                 if (isspace(line[i]))
1624                         continue;
1625                 else if (line[i] == '#')
1626                         return true;
1627                 else
1628                         return false;
1629         }
1630
1631         return true;
1632 }
1633
1634 static int ct_rebind_list(const char *list)
1635 {
1636         int              rc;
1637         FILE            *filp;
1638         ssize_t          r;
1639         char            *line = NULL;
1640         size_t           line_size = 0;
1641         unsigned int     nl = 0;
1642         unsigned int     ok = 0;
1643
1644         filp = fopen(list, "r");
1645         if (filp == NULL) {
1646                 rc = -errno;
1647                 CT_ERROR(rc, "cannot open '%s'", list);
1648                 return rc;
1649         }
1650
1651         /* each line consists of 2 FID */
1652         while ((r = getline(&line, &line_size, filp)) != -1) {
1653                 struct lu_fid   old_fid;
1654                 struct lu_fid   new_fid;
1655
1656                 /* Ignore empty and commented out ('#...') lines. */
1657                 if (should_ignore_line(line))
1658                         continue;
1659
1660                 nl++;
1661
1662                 rc = sscanf(line, SFID" "SFID, RFID(&old_fid), RFID(&new_fid));
1663                 if (rc != 6 || !fid_is_file(&old_fid) ||
1664                     !fid_is_file(&new_fid)) {
1665                         CT_ERROR(EINVAL,
1666                                  "'%s' FID expected near '%s', line %u",
1667                                  list, line, nl);
1668                         err_major++;
1669                         continue;
1670                 }
1671
1672                 if (ct_rebind_one(&old_fid, &new_fid))
1673                         err_major++;
1674                 else
1675                         ok++;
1676         }
1677
1678         fclose(filp);
1679
1680         if (line)
1681                 free(line);
1682
1683         /* return 0 if all rebinds were successful */
1684         CT_TRACE("%u lines read from '%s', %u rebind successful", nl, list, ok);
1685
1686         return ok == nl ? 0 : -1;
1687 }
1688
1689 static int ct_rebind(void)
1690 {
1691         int     rc;
1692
1693         if (opt.o_dst) {
1694                 struct lu_fid old_fid;
1695                 struct lu_fid new_fid;
1696
1697                 if (sscanf(opt.o_src, SFID, RFID(&old_fid)) != 3 ||
1698                     !fid_is_file(&old_fid)) {
1699                         rc = -EINVAL;
1700                         CT_ERROR(rc, "'%s' invalid FID format", opt.o_src);
1701                         return rc;
1702                 }
1703
1704                 if (sscanf(opt.o_dst, SFID, RFID(&new_fid)) != 3 ||
1705                     !fid_is_file(&new_fid)) {
1706                         rc = -EINVAL;
1707                         CT_ERROR(rc, "'%s' invalid FID format", opt.o_dst);
1708                         return rc;
1709                 }
1710
1711                 rc = ct_rebind_one(&old_fid, &new_fid);
1712
1713                 return rc;
1714         }
1715
1716         /* o_src is a list file */
1717         rc = ct_rebind_list(opt.o_src);
1718
1719         return rc;
1720 }
1721
1722 static int ct_dir_level_max(const char *dirpath, __u16 *sub_seqmax)
1723 {
1724         DIR             *dir;
1725         int              rc;
1726         __u16            sub_seq;
1727         struct dirent *ent;
1728
1729         *sub_seqmax = 0;
1730
1731         dir = opendir(dirpath);
1732         if (dir == NULL) {
1733                 rc = -errno;
1734                 CT_ERROR(rc, "cannot open directory '%s'", opt.o_hsm_root);
1735                 return rc;
1736         }
1737
1738         do {
1739                 errno = 0;
1740                 ent = readdir(dir);
1741                 if (ent == NULL) {
1742                         /* end of directory.
1743                          * rc is 0 and seqmax contains the max value. */
1744                         rc = -errno;
1745                         if (rc)
1746                                 CT_ERROR(rc, "cannot readdir '%s'", dirpath);
1747                         goto out;
1748                 }
1749
1750                 if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
1751                         continue;
1752
1753                 if (sscanf(ent->d_name, "%hx", &sub_seq) != 1) {
1754                         CT_TRACE("'%s' has an unexpected dirname format, "
1755                                  "skip entry", ent->d_name);
1756                         continue;
1757                 }
1758                 if (sub_seq > *sub_seqmax)
1759                         *sub_seqmax = sub_seq;
1760         } while (1);
1761 out:
1762         closedir(dir);
1763         return rc;
1764 }
1765
1766 static int ct_max_sequence(void)
1767 {
1768         int     rc, i;
1769         char    path[PATH_MAX];
1770         __u64   seq = 0;
1771         __u16   subseq;
1772
1773         snprintf(path, sizeof(path), "%s", opt.o_hsm_root);
1774         /* FID sequence is stored in top-level directory names:
1775          * hsm_root/16bits (high weight)/16 bits/16 bits/16 bits (low weight).
1776          */
1777         for (i = 0; i < 4; i++) {
1778                 size_t path_len;
1779
1780                 rc = ct_dir_level_max(path, &subseq);
1781                 if (rc != 0)
1782                         return rc;
1783                 seq |= ((__u64)subseq << ((3 - i) * 16));
1784                 path_len = strlen(path);
1785                 rc = snprintf(path + path_len, sizeof(path) - path_len,
1786                               "/%04x", subseq);
1787                 if (rc >= (sizeof(path) - path_len))
1788                         return -E2BIG;
1789                 path[sizeof(path) - 1] = '\0';
1790         }
1791
1792         printf("max_sequence: %#jx\n", (uintmax_t)seq);
1793
1794         return 0;
1795 }
1796
1797 static void handler(int signal)
1798 {
1799         psignal(signal, "exiting");
1800         /* If we don't clean up upon interrupt, umount thinks there's a ref
1801          * and doesn't remove us from mtab (EINPROGRESS). The lustre client
1802          * does successfully unmount and the mount is actually gone, but the
1803          * mtab entry remains. So this just makes mtab happier. */
1804         llapi_hsm_copytool_unregister(&ctdata);
1805
1806         /* Also remove fifo upon signal as during normal/error exit */
1807         if (opt.o_event_fifo != NULL)
1808                 llapi_hsm_unregister_event_fifo(opt.o_event_fifo);
1809         _exit(1);
1810 }
1811
1812 /* Daemon waits for messages from the kernel; run it in the background. */
1813 static int ct_run(void)
1814 {
1815         struct sigaction cleanup_sigaction;
1816         int rc;
1817
1818         if (opt.o_daemonize) {
1819                 rc = daemon(1, 1);
1820                 if (rc < 0) {
1821                         rc = -errno;
1822                         CT_ERROR(rc, "cannot daemonize");
1823                         return rc;
1824                 }
1825         }
1826
1827         setbuf(stdout, NULL);
1828
1829         if (opt.o_event_fifo != NULL) {
1830                 rc = llapi_hsm_register_event_fifo(opt.o_event_fifo);
1831                 if (rc < 0) {
1832                         CT_ERROR(rc, "failed to register event fifo");
1833                         return rc;
1834                 }
1835                 llapi_error_callback_set(llapi_hsm_log_error);
1836         }
1837
1838         rc = llapi_hsm_copytool_register(&ctdata, opt.o_mnt,
1839                                          opt.o_archive_cnt,
1840                                          opt.o_archive_id, 0);
1841         if (rc < 0) {
1842                 CT_ERROR(rc, "cannot start copytool interface");
1843                 return rc;
1844         }
1845
1846         memset(&cleanup_sigaction, 0, sizeof(cleanup_sigaction));
1847         cleanup_sigaction.sa_handler = handler;
1848         sigemptyset(&cleanup_sigaction.sa_mask);
1849         sigaction(SIGINT, &cleanup_sigaction, NULL);
1850         sigaction(SIGTERM, &cleanup_sigaction, NULL);
1851
1852         while (1) {
1853                 struct hsm_action_list *hal;
1854                 struct hsm_action_item *hai;
1855                 int msgsize;
1856                 int i = 0;
1857
1858                 CT_TRACE("waiting for message from kernel");
1859
1860                 rc = llapi_hsm_copytool_recv(ctdata, &hal, &msgsize);
1861                 if (rc == -ESHUTDOWN) {
1862                         CT_TRACE("shutting down");
1863                         break;
1864                 } else if (rc < 0) {
1865                         CT_WARN("cannot receive action list: %s",
1866                                 strerror(-rc));
1867                         err_major++;
1868                         if (opt.o_abort_on_error)
1869                                 break;
1870                         else
1871                                 continue;
1872                 }
1873
1874                 CT_TRACE("copytool fs=%s archive#=%d item_count=%d",
1875                          hal->hal_fsname, hal->hal_archive_id, hal->hal_count);
1876
1877                 if (strcmp(hal->hal_fsname, fs_name) != 0) {
1878                         rc = -EINVAL;
1879                         CT_ERROR(rc, "'%s' invalid fs name, expecting: %s",
1880                                  hal->hal_fsname, fs_name);
1881                         err_major++;
1882                         if (opt.o_abort_on_error)
1883                                 break;
1884                         else
1885                                 continue;
1886                 }
1887
1888                 hai = hai_first(hal);
1889                 while (++i <= hal->hal_count) {
1890                         if ((char *)hai - (char *)hal > msgsize) {
1891                                 rc = -EPROTO;
1892                                 CT_ERROR(rc,
1893                                          "'%s' item %d past end of message!",
1894                                          opt.o_mnt, i);
1895                                 err_major++;
1896                                 break;
1897                         }
1898                         rc = ct_process_item_async(hai, hal->hal_flags);
1899                         if (rc < 0)
1900                                 CT_ERROR(rc, "'%s' item %d process",
1901                                          opt.o_mnt, i);
1902                         if (opt.o_abort_on_error && err_major)
1903                                 break;
1904                         hai = hai_next(hai);
1905                 }
1906
1907                 if (opt.o_abort_on_error && err_major)
1908                         break;
1909         }
1910
1911         llapi_hsm_copytool_unregister(&ctdata);
1912         if (opt.o_event_fifo != NULL)
1913                 llapi_hsm_unregister_event_fifo(opt.o_event_fifo);
1914
1915         return rc;
1916 }
1917
1918 static int ct_setup(void)
1919 {
1920         int     rc;
1921
1922         /* set llapi message level */
1923         llapi_msg_set_level(opt.o_verbose);
1924
1925         arc_fd = open(opt.o_hsm_root, O_RDONLY);
1926         if (arc_fd < 0) {
1927                 rc = -errno;
1928                 CT_ERROR(rc, "cannot open archive at '%s'", opt.o_hsm_root);
1929                 return rc;
1930         }
1931
1932         rc = llapi_search_fsname(opt.o_mnt, fs_name);
1933         if (rc < 0) {
1934                 CT_ERROR(rc, "cannot find a Lustre filesystem mounted at '%s'",
1935                          opt.o_mnt);
1936                 return rc;
1937         }
1938
1939         opt.o_mnt_fd = open(opt.o_mnt, O_RDONLY);
1940         if (opt.o_mnt_fd < 0) {
1941                 rc = -errno;
1942                 CT_ERROR(rc, "cannot open mount point at '%s'",
1943                          opt.o_mnt);
1944                 return rc;
1945         }
1946
1947         return rc;
1948 }
1949
1950 static int ct_cleanup(void)
1951 {
1952         int     rc;
1953
1954         if (opt.o_mnt_fd >= 0) {
1955                 rc = close(opt.o_mnt_fd);
1956                 if (rc < 0) {
1957                         rc = -errno;
1958                         CT_ERROR(rc, "cannot close mount point");
1959                         return rc;
1960                 }
1961         }
1962
1963         if (arc_fd >= 0) {
1964                 rc = close(arc_fd);
1965                 if (rc < 0) {
1966                         rc = -errno;
1967                         CT_ERROR(rc, "cannot close archive root directory");
1968                         return rc;
1969                 }
1970         }
1971
1972         return 0;
1973 }
1974
1975 int main(int argc, char **argv)
1976 {
1977         int     rc;
1978
1979         snprintf(cmd_name, sizeof(cmd_name), "%s", basename(argv[0]));
1980         rc = ct_parseopts(argc, argv);
1981         if (rc < 0) {
1982                 CT_WARN("try '%s --help' for more information", cmd_name);
1983                 return -rc;
1984         }
1985
1986         rc = ct_setup();
1987         if (rc < 0)
1988                 goto error_cleanup;
1989
1990         switch (opt.o_action) {
1991         case CA_IMPORT:
1992                 rc = ct_import_recurse(opt.o_src);
1993                 break;
1994         case CA_REBIND:
1995                 rc = ct_rebind();
1996                 break;
1997         case CA_MAXSEQ:
1998                 rc = ct_max_sequence();
1999                 break;
2000         default:
2001                 rc = ct_run();
2002                 break;
2003         }
2004
2005         if (opt.o_action != CA_MAXSEQ)
2006                 CT_TRACE("process finished, errs: %d major, %d minor,"
2007                          " rc=%d (%s)", err_major, err_minor, rc,
2008                          strerror(-rc));
2009
2010 error_cleanup:
2011         ct_cleanup();
2012
2013         return -rc;
2014 }