ld/testplug4.c

   1 /* Test plugin for the GNU linker.  Check non-object IR file as well as
   2    get_input_file, get_view, release_input_file and get_symbols interfaces.
   3    Copyright (C) 2016-2017 Free Software Foundation, Inc.
   4
   5    This file is part of the GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "plugin-api.h"
  25 #include "filenames.h"
  26 /* For ARRAY_SIZE macro only - we don't link the library itself.  */
  27 #include "libiberty.h"
  28
  29 extern enum ld_plugin_status onload (struct ld_plugin_tv *tv);
  30 static enum ld_plugin_status onclaim_file (const struct ld_plugin_input_file *file,
  31                                 int *claimed);
  32 static enum ld_plugin_status onall_symbols_read (void);
  33 static enum ld_plugin_status oncleanup (void);
  34
  35 /* Helper for calling plugin api message function.  */
  36 #define TV_MESSAGE if (tv_message) (*tv_message)
  37
  38 /* Struct for recording files to claim / files claimed.  */
  39 typedef struct claim_file
  40 {
  41   struct claim_file *next;
  42   struct ld_plugin_input_file file;
  43   bfd_boolean claimed;
  44   struct ld_plugin_symbol *symbols;
  45   int n_syms_allocated;
  46   int n_syms_used;
  47 } claim_file_t;
  48
  49 /* Types of things that can be added at all symbols read time.  */
  50 typedef enum addfile_enum
  51 {
  52   ADD_FILE,
  53   ADD_LIB,
  54   ADD_DIR
  55 } addfile_enum_t;
  56
  57 /* Struct for recording files to add to final link.  */
  58 typedef struct add_file
  59 {
  60   struct add_file *next;
  61   const char *name;
  62   addfile_enum_t type;
  63 } add_file_t;
  64
  65 /* Helper macro for defining array of transfer vector tags and names.  */
  66 #define ADDENTRY(tag) { tag, #tag }
  67
  68 /* Struct for looking up human-readable versions of tag names.  */
  69 typedef struct tag_name
  70 {
  71   enum ld_plugin_tag tag;
  72   const char *name;
  73 } tag_name_t;
  74
  75 /* Array of all known tags and their names.  */
  76 static const tag_name_t tag_names[] =
  77 {
  78   ADDENTRY(LDPT_NULL),
  79   ADDENTRY(LDPT_API_VERSION),
  80   ADDENTRY(LDPT_GOLD_VERSION),
  81   ADDENTRY(LDPT_LINKER_OUTPUT),
  82   ADDENTRY(LDPT_OPTION),
  83   ADDENTRY(LDPT_REGISTER_CLAIM_FILE_HOOK),
  84   ADDENTRY(LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK),
  85   ADDENTRY(LDPT_REGISTER_CLEANUP_HOOK),
  86   ADDENTRY(LDPT_ADD_SYMBOLS),
  87   ADDENTRY(LDPT_GET_SYMBOLS),
  88   ADDENTRY(LDPT_GET_SYMBOLS_V2),
  89   ADDENTRY(LDPT_ADD_INPUT_FILE),
  90   ADDENTRY(LDPT_MESSAGE),
  91   ADDENTRY(LDPT_GET_INPUT_FILE),
  92   ADDENTRY(LDPT_GET_VIEW),
  93   ADDENTRY(LDPT_RELEASE_INPUT_FILE),
  94   ADDENTRY(LDPT_ADD_INPUT_LIBRARY),
  95   ADDENTRY(LDPT_OUTPUT_NAME),
  96   ADDENTRY(LDPT_SET_EXTRA_LIBRARY_PATH),
  97   ADDENTRY(LDPT_GNU_LD_VERSION)
  98 };
  99
 100 /* Function pointers to cache hooks passed at onload time.  */
 101 static ld_plugin_register_claim_file tv_register_claim_file = 0;
 102 static ld_plugin_register_all_symbols_read tv_register_all_symbols_read = 0;
 103 static ld_plugin_register_cleanup tv_register_cleanup = 0;
 104 static ld_plugin_add_symbols tv_add_symbols = 0;
 105 static ld_plugin_get_symbols tv_get_symbols = 0;
 106 static ld_plugin_get_symbols tv_get_symbols_v2 = 0;
 107 static ld_plugin_add_input_file tv_add_input_file = 0;
 108 static ld_plugin_message tv_message = 0;
 109 static ld_plugin_get_input_file tv_get_input_file = 0;
 110 static ld_plugin_get_view tv_get_view = 0;
 111 static ld_plugin_release_input_file tv_release_input_file = 0;
 112 static ld_plugin_add_input_library tv_add_input_library = 0;
 113 static ld_plugin_set_extra_library_path tv_set_extra_library_path = 0;
 114
 115 /* Other cached info from the transfer vector.  */
 116 static enum ld_plugin_output_file_type linker_output;
 117 static const char *output_name;
 118
 119 /* Behaviour control flags set by plugin options.  */
 120 static enum ld_plugin_status onload_ret = LDPS_OK;
 121 static enum ld_plugin_status claim_file_ret = LDPS_OK;
 122 static enum ld_plugin_status all_symbols_read_ret = LDPS_OK;
 123 static enum ld_plugin_status cleanup_ret = LDPS_OK;
 124 static bfd_boolean register_claimfile_hook = TRUE;
 125 static bfd_boolean register_allsymbolsread_hook = FALSE;
 126 static bfd_boolean register_cleanup_hook = FALSE;
 127 static bfd_boolean dumpresolutions = FALSE;
 128 static bfd_boolean allsymbolsread_silent = FALSE;
 129
 130 /* The master list of all claimable/claimed files.  */
 131 static claim_file_t *claimfiles_list = NULL;
 132
 133 /* We keep a tail pointer for easy linking on the end.  */
 134 static claim_file_t **claimfiles_tail_chain_ptr = &claimfiles_list;
 135
 136 /* The last claimed file added to the list, for receiving syms.  */
 137 static claim_file_t *last_claimfile = NULL;
 138
 139 /* The master list of all files to add to the final link.  */
 140 static add_file_t *addfiles_list = NULL;
 141
 142 /* We keep a tail pointer for easy linking on the end.  */
 143 static add_file_t **addfiles_tail_chain_ptr = &addfiles_list;
 144
 145 /* Add a new claimfile on the end of the chain.  */
 146 static enum ld_plugin_status
 147 record_claim_file (const char *file, off_t filesize)
 148 {
 149   claim_file_t *newfile;
 150
 151   newfile = malloc (sizeof *newfile);
 152   if (!newfile)
 153     return LDPS_ERR;
 154   memset (newfile, 0, sizeof *newfile);
 155   /* Only setup for now is remembering the name to look for.  */
 156   newfile->file.name = file;
 157   newfile->file.filesize = filesize;
 158   /* Chain it on the end of the list.  */
 159   *claimfiles_tail_chain_ptr = newfile;
 160   claimfiles_tail_chain_ptr = &newfile->next;
 161   /* Record it as active for receiving symbols to register.  */
 162   last_claimfile = newfile;
 163   return LDPS_OK;
 164 }
 165
 166 /* Add a new addfile on the end of the chain.  */
 167 static enum ld_plugin_status
 168 record_add_file (const char *file, addfile_enum_t type)
 169 {
 170   add_file_t *newfile;
 171
 172   newfile = malloc (sizeof *newfile);
 173   if (!newfile)
 174     return LDPS_ERR;
 175   newfile->next = NULL;
 176   newfile->name = file;
 177   newfile->type = type;
 178   /* Chain it on the end of the list.  */
 179   *addfiles_tail_chain_ptr = newfile;
 180   addfiles_tail_chain_ptr = &newfile->next;
 181   return LDPS_OK;
 182 }
 183
 184 /* Parse a command-line argument string into a symbol definition.
 185    Symbol-strings follow the colon-separated format:
 186         NAME:VERSION:def:vis:size:COMDATKEY
 187    where the fields in capitals are strings and those in lower
 188    case are integers.  We don't allow to specify a resolution as
 189    doing so is not meaningful when calling the add symbols hook.  */
 190 static enum ld_plugin_status
 191 parse_symdefstr (const char *str, struct ld_plugin_symbol *sym)
 192 {
 193   int n;
 194   long long size;
 195   const char *colon1, *colon2, *colon5;
 196
 197   /* Locate the colons separating the first two strings.  */
 198   colon1 = strchr (str, ':');
 199   if (!colon1)
 200     return LDPS_ERR;
 201   colon2 = strchr (colon1+1, ':');
 202   if (!colon2)
 203     return LDPS_ERR;
 204   /* Name must not be empty (version may be).  */
 205   if (colon1 == str)
 206     return LDPS_ERR;
 207
 208   /* The fifth colon and trailing comdat key string are optional,
 209      but the intermediate ones must all be present.  */
 210   colon5 = strchr (colon2+1, ':');      /* Actually only third so far.  */
 211   if (!colon5)
 212     return LDPS_ERR;
 213   colon5 = strchr (colon5+1, ':');      /* Hopefully fourth now.  */
 214   if (!colon5)
 215     return LDPS_ERR;
 216   colon5 = strchr (colon5+1, ':');      /* Optional fifth now.  */
 217
 218   /* Finally we'll use sscanf to parse the numeric fields, then
 219      we'll split out the strings which we need to allocate separate
 220      storage for anyway so that we can add nul termination.  */
 221   n = sscanf (colon2 + 1, "%i:%i:%lli", &sym->def, &sym->visibility, &size);
 222   if (n != 3)
 223     return LDPS_ERR;
 224
 225   /* Parsed successfully, so allocate strings and fill out fields.  */
 226   sym->size = size;
 227   sym->resolution = LDPR_UNKNOWN;
 228   sym->name = malloc (colon1 - str + 1);
 229   if (!sym->name)
 230     return LDPS_ERR;
 231   memcpy (sym->name, str, colon1 - str);
 232   sym->name[colon1 - str] = '\0';
 233   if (colon2 > (colon1 + 1))
 234     {
 235       sym->version = malloc (colon2 - colon1);
 236       if (!sym->version)
 237         return LDPS_ERR;
 238       memcpy (sym->version, colon1 + 1, colon2 - (colon1 + 1));
 239       sym->version[colon2 - (colon1 + 1)] = '\0';
 240     }
 241   else
 242     sym->version = NULL;
 243   if (colon5 && colon5[1])
 244     {
 245       sym->comdat_key = malloc (strlen (colon5 + 1) + 1);
 246       if (!sym->comdat_key)
 247         return LDPS_ERR;
 248       strcpy (sym->comdat_key, colon5 + 1);
 249     }
 250   else
 251     sym->comdat_key = 0;
 252   return LDPS_OK;
 253 }
 254
 255 /* Record a symbol to be added for the last-added claimfile.  */
 256 static enum ld_plugin_status
 257 record_claimed_file_symbol (const char *symdefstr)
 258 {
 259   struct ld_plugin_symbol sym;
 260
 261   /* Can't add symbols except as belonging to claimed files.  */
 262   if (!last_claimfile)
 263     return LDPS_ERR;
 264
 265   /* If string doesn't parse correctly, give an error.  */
 266   if (parse_symdefstr (symdefstr, &sym) != LDPS_OK)
 267     return LDPS_ERR;
 268
 269   /* Check for enough space, resize array if needed, and add it.  */
 270   if (last_claimfile->n_syms_allocated == last_claimfile->n_syms_used)
 271     {
 272       int new_n_syms = last_claimfile->n_syms_allocated
 273                         ? 2 * last_claimfile->n_syms_allocated
 274                         : 10;
 275       last_claimfile->symbols = realloc (last_claimfile->symbols,
 276                         new_n_syms * sizeof *last_claimfile->symbols);
 277       if (!last_claimfile->symbols)
 278         return LDPS_ERR;
 279       last_claimfile->n_syms_allocated = new_n_syms;
 280     }
 281   last_claimfile->symbols[last_claimfile->n_syms_used++] = sym;
 282
 283   return LDPS_OK;
 284 }
 285
 286 /* Records the status to return from one of the registered hooks.  */
 287 static enum ld_plugin_status
 288 set_ret_val (const char *whichval, enum ld_plugin_status retval)
 289 {
 290   if (!strcmp ("onload", whichval))
 291     onload_ret = retval;
 292   else if (!strcmp ("claimfile", whichval))
 293     claim_file_ret = retval;
 294   else if (!strcmp ("allsymbolsread", whichval))
 295     all_symbols_read_ret = retval;
 296   else if (!strcmp ("cleanup", whichval))
 297     cleanup_ret = retval;
 298   else
 299     return LDPS_ERR;
 300   return LDPS_OK;
 301 }
 302
 303 /* Records hooks which should be registered.  */
 304 static enum ld_plugin_status
 305 set_register_hook (const char *whichhook, bfd_boolean yesno)
 306 {
 307   if (!strcmp ("claimfile", whichhook))
 308     register_claimfile_hook = yesno;
 309   else if (!strcmp ("allsymbolsread", whichhook))
 310     register_allsymbolsread_hook = yesno;
 311   else if (!strcmp ("allsymbolsreadsilent", whichhook))
 312     {
 313       register_allsymbolsread_hook = yesno;
 314       allsymbolsread_silent = TRUE;
 315     }
 316   else if (!strcmp ("cleanup", whichhook))
 317     register_cleanup_hook = yesno;
 318   else
 319     return LDPS_ERR;
 320   return LDPS_OK;
 321 }
 322
 323 /* Determine type of plugin option and pass to individual parsers.  */
 324 static enum ld_plugin_status
 325 parse_option (const char *opt)
 326 {
 327   if (!strncmp ("fatal", opt, 5))
 328     {
 329       TV_MESSAGE (LDPL_FATAL, "Fatal error");
 330       fflush (NULL);
 331     }
 332   else if (!strncmp ("error", opt, 5))
 333     {
 334       TV_MESSAGE (LDPL_ERROR, "Error");
 335       fflush (NULL);
 336     }
 337   else if (!strncmp ("warning", opt, 7))
 338     {
 339       TV_MESSAGE (LDPL_WARNING, "Warning");
 340       fflush (NULL);
 341     }
 342   else if (!strncmp ("fail", opt, 4))
 343     return set_ret_val (opt + 4, LDPS_ERR);
 344   else if (!strncmp ("pass", opt, 4))
 345     return set_ret_val (opt + 4, LDPS_OK);
 346   else if (!strncmp ("register", opt, 8))
 347     return set_register_hook (opt + 8, TRUE);
 348   else if (!strncmp ("noregister", opt, 10))
 349     return set_register_hook (opt + 10, FALSE);
 350   else if (!strncmp ("claim:", opt, 6))
 351     return record_claim_file (opt + 6, 0);
 352   else if (!strncmp ("sym:", opt, 4))
 353     return record_claimed_file_symbol (opt + 4);
 354   else if (!strncmp ("add:", opt, 4))
 355     return record_add_file (opt + 4, ADD_FILE);
 356   else if (!strncmp ("lib:", opt, 4))
 357     return record_add_file (opt + 4, ADD_LIB);
 358   else if (!strncmp ("dir:", opt, 4))
 359     return record_add_file (opt + 4, ADD_DIR);
 360   else if (!strcmp ("dumpresolutions", opt))
 361     dumpresolutions = TRUE;
 362   else
 363     return LDPS_ERR;
 364   return LDPS_OK;
 365 }
 366
 367 /* Handle/record information received in a transfer vector entry.  */
 368 static enum ld_plugin_status
 369 parse_tv_tag (struct ld_plugin_tv *tv)
 370 {
 371 #define SETVAR(x) x = tv->tv_u.x
 372   switch (tv->tv_tag)
 373     {
 374       case LDPT_OPTION:
 375         return parse_option (tv->tv_u.tv_string);
 376       case LDPT_NULL:
 377       case LDPT_GOLD_VERSION:
 378       case LDPT_GNU_LD_VERSION:
 379       case LDPT_API_VERSION:
 380       default:
 381         break;
 382       case LDPT_OUTPUT_NAME:
 383         output_name = tv->tv_u.tv_string;
 384         break;
 385       case LDPT_LINKER_OUTPUT:
 386         linker_output = tv->tv_u.tv_val;
 387         break;
 388       case LDPT_REGISTER_CLAIM_FILE_HOOK:
 389         SETVAR(tv_register_claim_file);
 390         break;
 391       case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
 392         SETVAR(tv_register_all_symbols_read);
 393         break;
 394       case LDPT_REGISTER_CLEANUP_HOOK:
 395         SETVAR(tv_register_cleanup);
 396         break;
 397       case LDPT_ADD_SYMBOLS:
 398         SETVAR(tv_add_symbols);
 399         break;
 400       case LDPT_GET_SYMBOLS:
 401         SETVAR(tv_get_symbols);
 402         break;
 403       case LDPT_GET_SYMBOLS_V2:
 404         tv_get_symbols_v2 = tv->tv_u.tv_get_symbols;
 405         break;
 406       case LDPT_ADD_INPUT_FILE:
 407         SETVAR(tv_add_input_file);
 408         break;
 409       case LDPT_MESSAGE:
 410         SETVAR(tv_message);
 411         break;
 412       case LDPT_GET_INPUT_FILE:
 413         SETVAR(tv_get_input_file);
 414         break;
 415       case LDPT_GET_VIEW:
 416         SETVAR(tv_get_view);
 417         break;
 418       case LDPT_RELEASE_INPUT_FILE:
 419         SETVAR(tv_release_input_file);
 420         break;
 421       case LDPT_ADD_INPUT_LIBRARY:
 422         SETVAR(tv_add_input_library);
 423         break;
 424       case LDPT_SET_EXTRA_LIBRARY_PATH:
 425         SETVAR(tv_set_extra_library_path);
 426         break;
 427     }
 428 #undef SETVAR
 429   return LDPS_OK;
 430 }
 431
 432 /* Standard plugin API entry point.  */
 433 enum ld_plugin_status
 434 onload (struct ld_plugin_tv *tv)
 435 {
 436   enum ld_plugin_status rv;
 437
 438   /* This plugin does nothing but dump the tv array.  It would
 439      be an error if this function was called without one.  */
 440   if (!tv)
 441     return LDPS_ERR;
 442
 443   /* First entry should always be LDPT_MESSAGE, letting us get
 444      hold of it easily so we can send output straight away.  */
 445   if (tv[0].tv_tag == LDPT_MESSAGE)
 446     tv_message = tv[0].tv_u.tv_message;
 447
 448   do
 449     if ((rv = parse_tv_tag (tv)) != LDPS_OK)
 450       return rv;
 451   while ((tv++)->tv_tag != LDPT_NULL);
 452
 453   /* Register hooks only if instructed by options.  */
 454   if (register_claimfile_hook)
 455     {
 456       if (!tv_register_claim_file)
 457         {
 458           TV_MESSAGE (LDPL_FATAL, "No register_claim_file hook");
 459           fflush (NULL);
 460           return LDPS_ERR;
 461         }
 462       (*tv_register_claim_file) (onclaim_file);
 463     }
 464   if (register_allsymbolsread_hook)
 465     {
 466       if (!tv_register_all_symbols_read)
 467         {
 468           TV_MESSAGE (LDPL_FATAL, "No register_all_symbols_read hook");
 469           fflush (NULL);
 470           return LDPS_ERR;
 471         }
 472       (*tv_register_all_symbols_read) (onall_symbols_read);
 473     }
 474   if (register_cleanup_hook)
 475     {
 476       if (!tv_register_cleanup)
 477         {
 478           TV_MESSAGE (LDPL_FATAL, "No register_cleanup hook");
 479           fflush (NULL);
 480           return LDPS_ERR;
 481         }
 482       (*tv_register_cleanup) (oncleanup);
 483     }
 484
 485   /* Claim testsuite/ld-plugin/pr20070b.c, standalone or in a library.
 486      Its size must be SIZE_OF_PR20070B_C bytes.  */
 487 #define SIZE_OF_PR20070B_C      248
 488   if (onload_ret == LDPS_OK
 489       && (record_claim_file ("pr20070b.c", SIZE_OF_PR20070B_C) != LDPS_OK
 490           || record_claimed_file_symbol ("def::0:0:0") != LDPS_OK
 491           || record_claimed_file_symbol ("weakdef::1:0:0") != LDPS_OK
 492           || record_claimed_file_symbol ("undef::2:0:0") != LDPS_OK
 493           || record_claimed_file_symbol ("weakundef::3:0:0") != LDPS_OK
 494           || record_claimed_file_symbol ("common::4:0:0") != LDPS_OK
 495           || record_claim_file ("libpr20070.a", SIZE_OF_PR20070B_C) != LDPS_OK
 496           || record_claimed_file_symbol ("def::0:0:0") != LDPS_OK
 497           || record_claimed_file_symbol ("weakdef::1:0:0") != LDPS_OK
 498           || record_claimed_file_symbol ("undef::2:0:0") != LDPS_OK
 499           || record_claimed_file_symbol ("weakundef::3:0:0") != LDPS_OK
 500           || record_claimed_file_symbol ("common::4:0:0") != LDPS_OK))
 501     onload_ret = LDPS_ERR;
 502
 503   return onload_ret;
 504 }
 505
 506 char *
 507 xstrdup (const char *s)
 508 {
 509   size_t len = strlen (s) + 1;
 510   char *ret = malloc (len + 1);
 511   return (char *) memcpy (ret, s, len);
 512 }
 513
 514 /* Standard plugin API registerable hook.  */
 515 static enum ld_plugin_status
 516 onclaim_file (const struct ld_plugin_input_file *file, int *claimed)
 517 {
 518   /* Let's see if we want to claim this file.  */
 519   claim_file_t *claimfile = claimfiles_list;
 520   size_t len = strlen (file->name);
 521   char *name = xstrdup (file->name);
 522   char *p = name + len;
 523   bfd_boolean islib;
 524
 525   /* Only match the file name without the directory part.  */
 526   islib = *p == 'a' && *(p - 1) == '.';
 527   for (; p != name; p--)
 528     if (IS_DIR_SEPARATOR (*p))
 529       {
 530         p++;
 531         break;
 532       }
 533
 534   while (claimfile)
 535     {
 536       /* Claim the file only if the file name and size match and don't
 537          match the whole library.  */
 538       if (!strcmp (p, claimfile->file.name)
 539           && claimfile->file.filesize == file->filesize
 540           && (!islib || file->offset != 0))
 541         break;
 542       claimfile = claimfile->next;
 543     }
 544
 545   free (name);
 546
 547   /* If we decided to claim it, record that fact, and add any symbols
 548      that were defined for it by plugin options.  */
 549   *claimed = (claimfile != 0);
 550   if (claimfile)
 551     {
 552       claimfile->claimed = TRUE;
 553       claimfile->file = *file;
 554       if (claimfile->n_syms_used && !tv_add_symbols)
 555         return LDPS_ERR;
 556       else if (claimfile->n_syms_used)
 557         return (*tv_add_symbols) (claimfile->file.handle,
 558                                 claimfile->n_syms_used, claimfile->symbols);
 559     }
 560
 561   return claim_file_ret;
 562 }
 563
 564 /* Standard plugin API registerable hook.  */
 565 static enum ld_plugin_status
 566 onall_symbols_read (void)
 567 {
 568   static const char *resolutions[] =
 569     {
 570       "LDPR_UNKNOWN",
 571       "LDPR_UNDEF",
 572       "LDPR_PREVAILING_DEF",
 573       "LDPR_PREVAILING_DEF_IRONLY",
 574       "LDPR_PREEMPTED_REG",
 575       "LDPR_PREEMPTED_IR",
 576       "LDPR_RESOLVED_IR",
 577       "LDPR_RESOLVED_EXEC",
 578       "LDPR_RESOLVED_DYN",
 579       "LDPR_PREVAILING_DEF_IRONLY_EXP",
 580     };
 581   claim_file_t *claimfile = dumpresolutions ? claimfiles_list : NULL;
 582   add_file_t *addfile = addfiles_list;
 583   struct ld_plugin_input_file file;
 584   const void *view;
 585   char buffer[30];
 586   int fd;
 587   char *filename;
 588   if (! allsymbolsread_silent)
 589     TV_MESSAGE (LDPL_INFO, "hook called: all symbols read.");
 590   for ( ; claimfile; claimfile = claimfile->next)
 591     {
 592       enum ld_plugin_status rv;
 593       int n;
 594       if (claimfile->n_syms_used && !tv_get_symbols_v2)
 595         return LDPS_ERR;
 596       else if (!claimfile->n_syms_used)
 597         continue;
 598       else if (!claimfile->file.handle)
 599         continue;
 600       rv = tv_get_input_file (claimfile->file.handle, &file);
 601       if (rv != LDPS_OK)
 602         return rv;
 603       TV_MESSAGE (LDPL_INFO, "Input: %s (%s)", file.name,
 604                   claimfile->file.name);
 605       rv = tv_get_view (claimfile->file.handle, &view);
 606       if (rv != LDPS_OK)
 607         return rv;
 608 #define EXPECTED_VIEW "/* The first line of this file must match the expectation of"
 609 #define EXPECTED_VIEW_LENGTH (sizeof (EXPECTED_VIEW) - 1)
 610       if (file.filesize != SIZE_OF_PR20070B_C
 611           || SIZE_OF_PR20070B_C < EXPECTED_VIEW_LENGTH
 612           || memcmp (view, EXPECTED_VIEW, EXPECTED_VIEW_LENGTH) != 0)
 613         {
 614           char result[EXPECTED_VIEW_LENGTH + 1];
 615           memcpy (result, view, sizeof (result));
 616           result[EXPECTED_VIEW_LENGTH] = '\0';
 617           TV_MESSAGE (LDPL_INFO, "Incorrect view:");
 618           TV_MESSAGE (LDPL_INFO, "  Expect: " EXPECTED_VIEW);
 619           TV_MESSAGE (LDPL_INFO, "  Result: %s", result);
 620         }
 621       rv = tv_get_symbols_v2 (claimfile->file.handle, claimfile->n_syms_used,
 622                               claimfile->symbols);
 623       if (rv != LDPS_OK)
 624         return rv;
 625       for (n = 0; n < claimfile->n_syms_used; n++)
 626         TV_MESSAGE (LDPL_INFO, "Sym: '%s%s%s' Resolution: %s",
 627                     claimfile->symbols[n].name,
 628                     claimfile->symbols[n].version ? "@" : "",
 629                     (claimfile->symbols[n].version
 630                      ? claimfile->symbols[n].version : ""),
 631                     resolutions[claimfile->symbols[n].resolution]);
 632       fd = claimfile->file.fd;
 633       filename = xstrdup (claimfile->file.name);
 634       rv = tv_release_input_file (claimfile->file.handle);
 635       if (rv != LDPS_OK)
 636         {
 637           free (filename);
 638           return rv;
 639         }
 640       if (read (fd, buffer, sizeof (buffer)) >= 0)
 641         {
 642           TV_MESSAGE (LDPL_FATAL, "Unreleased file descriptor on: %s",
 643                       claimfile->file.name);
 644           free (filename);
 645           return LDPS_ERR;
 646         }
 647       free (filename);
 648     }
 649   for ( ; addfile ; addfile = addfile->next)
 650     {
 651       enum ld_plugin_status rv;
 652       if (addfile->type == ADD_LIB && tv_add_input_library)
 653         rv = (*tv_add_input_library) (addfile->name);
 654       else if (addfile->type == ADD_FILE && tv_add_input_file)
 655         rv = (*tv_add_input_file) (addfile->name);
 656       else if (addfile->type == ADD_DIR && tv_set_extra_library_path)
 657         rv = (*tv_set_extra_library_path) (addfile->name);
 658       else
 659         rv = LDPS_ERR;
 660       if (rv != LDPS_OK)
 661         return rv;
 662     }
 663   fflush (NULL);
 664   return all_symbols_read_ret;
 665 }
 666
 667 /* Standard plugin API registerable hook.  */
 668 static enum ld_plugin_status
 669 oncleanup (void)
 670 {
 671   TV_MESSAGE (LDPL_INFO, "hook called: cleanup.");
 672   fflush (NULL);
 673   return cleanup_ret;
 674 }