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  1. /* Core file generic interface routines for BFD.
  2.    Copyright 1990, 1991, 1992, 1993, 1994, 2000, 2001, 2002, 2003, 2005,
  3.    2007 Free Software Foundation, Inc.
  4.    Written by Cygnus Support.
  5.  
  6.    This file is part of BFD, the Binary File Descriptor library.
  7.  
  8.    This program is free software; you can redistribute it and/or modify
  9.    it under the terms of the GNU General Public License as published by
  10.    the Free Software Foundation; either version 3 of the License, or
  11.    (at your option) any later version.
  12.  
  13.    This program is distributed in the hope that it will be useful,
  14.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16.    GNU General Public License for more details.
  17.  
  18.    You should have received a copy of the GNU General Public License
  19.    along with this program; if not, write to the Free Software
  20.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21.    MA 02110-1301, USA.  */
  22.  
  23. /*
  24. SECTION
  25.         Core files
  26.  
  27. SUBSECTION
  28.         Core file functions
  29.  
  30. DESCRIPTION
  31.         These are functions pertaining to core files.
  32. */
  33.  
  34. #include "sysdep.h"
  35. #include "bfd.h"
  36. #include "libbfd.h"
  37.  
  38. /*
  39. FUNCTION
  40.         bfd_core_file_failing_command
  41.  
  42. SYNOPSIS
  43.         const char *bfd_core_file_failing_command (bfd *abfd);
  44.  
  45. DESCRIPTION
  46.         Return a read-only string explaining which program was running
  47.         when it failed and produced the core file @var{abfd}.
  48.  
  49. */
  50.  
  51. const char *
  52. bfd_core_file_failing_command (bfd *abfd)
  53. {
  54.   if (abfd->format != bfd_core)
  55.     {
  56.       bfd_set_error (bfd_error_invalid_operation);
  57.       return NULL;
  58.     }
  59.   return BFD_SEND (abfd, _core_file_failing_command, (abfd));
  60. }
  61.  
  62. /*
  63. FUNCTION
  64.         bfd_core_file_failing_signal
  65.  
  66. SYNOPSIS
  67.         int bfd_core_file_failing_signal (bfd *abfd);
  68.  
  69. DESCRIPTION
  70.         Returns the signal number which caused the core dump which
  71.         generated the file the BFD @var{abfd} is attached to.
  72. */
  73.  
  74. int
  75. bfd_core_file_failing_signal (bfd *abfd)
  76. {
  77.   if (abfd->format != bfd_core)
  78.     {
  79.       bfd_set_error (bfd_error_invalid_operation);
  80.       return 0;
  81.     }
  82.   return BFD_SEND (abfd, _core_file_failing_signal, (abfd));
  83. }
  84.  
  85. /*
  86. FUNCTION
  87.         bfd_core_file_pid
  88.  
  89. SYNOPSIS
  90.         int bfd_core_file_pid (bfd *abfd);
  91.  
  92. DESCRIPTION
  93.  
  94.         Returns the PID of the process the core dump the BFD
  95.         @var{abfd} is attached to was generated from.
  96. */
  97.  
  98. int
  99. bfd_core_file_pid (bfd *abfd)
  100. {
  101.   if (abfd->format != bfd_core)
  102.     {
  103.       bfd_set_error (bfd_error_invalid_operation);
  104.       return 0;
  105.     }
  106.   return BFD_SEND (abfd, _core_file_pid, (abfd));
  107. }
  108.  
  109.  
  110. /*
  111. FUNCTION
  112.         core_file_matches_executable_p
  113.  
  114. SYNOPSIS
  115.         bfd_boolean core_file_matches_executable_p
  116.           (bfd *core_bfd, bfd *exec_bfd);
  117.  
  118. DESCRIPTION
  119.         Return <<TRUE>> if the core file attached to @var{core_bfd}
  120.         was generated by a run of the executable file attached to
  121.         @var{exec_bfd}, <<FALSE>> otherwise.
  122. */
  123.  
  124. bfd_boolean
  125. core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
  126. {
  127.   if (core_bfd->format != bfd_core || exec_bfd->format != bfd_object)
  128.     {
  129.       bfd_set_error (bfd_error_wrong_format);
  130.       return FALSE;
  131.     }
  132.  
  133.   return BFD_SEND (core_bfd, _core_file_matches_executable_p,
  134.                    (core_bfd, exec_bfd));
  135. }
  136.  
  137. /*
  138. FUNCTION
  139.         generic_core_file_matches_executable_p
  140.  
  141. SYNOPSIS
  142.         bfd_boolean generic_core_file_matches_executable_p
  143.           (bfd *core_bfd, bfd *exec_bfd);
  144.  
  145. DESCRIPTION
  146.         Return TRUE if the core file attached to @var{core_bfd}
  147.         was generated by a run of the executable file attached
  148.         to @var{exec_bfd}.  The match is based on executable
  149.         basenames only.
  150.  
  151.         Note: When not able to determine the core file failing
  152.         command or the executable name, we still return TRUE even
  153.         though we're not sure that core file and executable match.
  154.         This is to avoid generating a false warning in situations
  155.         where we really don't know whether they match or not.
  156. */
  157.  
  158. bfd_boolean
  159. generic_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
  160. {
  161.   char *exec;
  162.   char *core;
  163.   char *last_slash;
  164.  
  165.   if (exec_bfd == NULL || core_bfd == NULL)
  166.     return TRUE;
  167.  
  168.   /* The cast below is to avoid a compiler warning due to the assignment
  169.      of the const char * returned by bfd_core_file_failing_command to a
  170.      non-const char *.  In this case, the assignement does not lead to
  171.      breaking the const, as we're only reading the string.  */
  172.  
  173.   core = (char *) bfd_core_file_failing_command (core_bfd);
  174.   if (core == NULL)
  175.     return TRUE;
  176.  
  177.   exec = bfd_get_filename (exec_bfd);
  178.   if (exec == NULL)
  179.     return TRUE;
  180.  
  181.   last_slash = strrchr (core, '/');
  182.   if (last_slash != NULL)
  183.     core = last_slash + 1;
  184.  
  185.   last_slash = strrchr (exec, '/');
  186.   if (last_slash != NULL)
  187.     exec = last_slash + 1;
  188.  
  189.   return filename_cmp (exec, core) == 0;
  190. }
  191.  
  192.