X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=bfd%2Fcorefile.c;h=4f70fd925d6f314ccc925df2ad8a7af1afd7f66d;hb=d218dba3f491191322e50df74376faa11c4a9f6b;hp=da9d4d739dc5d4310af99267ba0775e466de432a;hpb=b34976b65aea8f33690229600bbf4527ec3118e1;p=binutils-gdb.git diff --git a/bfd/corefile.c b/bfd/corefile.c index da9d4d739dc..4f70fd925d6 100644 --- a/bfd/corefile.c +++ b/bfd/corefile.c @@ -1,34 +1,37 @@ /* Core file generic interface routines for BFD. - Copyright 1990, 1991, 1992, 1993, 1994, 2000, 2001, 2002 - Free Software Foundation, Inc. + Copyright (C) 1990-2022 Free Software Foundation, Inc. Written by Cygnus Support. -This file is part of BFD, the Binary File Descriptor library. + This file is part of BFD, the Binary File Descriptor library. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ /* SECTION Core files +SUBSECTION + Core file functions + DESCRIPTION These are functions pertaining to core files. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "libbfd.h" /* @@ -36,7 +39,7 @@ FUNCTION bfd_core_file_failing_command SYNOPSIS - const char *bfd_core_file_failing_command(bfd *abfd); + const char *bfd_core_file_failing_command (bfd *abfd); DESCRIPTION Return a read-only string explaining which program was running @@ -45,13 +48,13 @@ DESCRIPTION */ const char * -bfd_core_file_failing_command (abfd) - bfd *abfd; +bfd_core_file_failing_command (bfd *abfd) { - if (abfd->format != bfd_core) { - bfd_set_error (bfd_error_invalid_operation); - return NULL; - } + if (abfd->format != bfd_core) + { + bfd_set_error (bfd_error_invalid_operation); + return NULL; + } return BFD_SEND (abfd, _core_file_failing_command, (abfd)); } @@ -60,7 +63,7 @@ FUNCTION bfd_core_file_failing_signal SYNOPSIS - int bfd_core_file_failing_signal(bfd *abfd); + int bfd_core_file_failing_signal (bfd *abfd); DESCRIPTION Returns the signal number which caused the core dump which @@ -68,38 +71,120 @@ DESCRIPTION */ int -bfd_core_file_failing_signal (abfd) - bfd *abfd; +bfd_core_file_failing_signal (bfd *abfd) { - if (abfd->format != bfd_core) { - bfd_set_error (bfd_error_invalid_operation); - return 0; - } + if (abfd->format != bfd_core) + { + bfd_set_error (bfd_error_invalid_operation); + return 0; + } return BFD_SEND (abfd, _core_file_failing_signal, (abfd)); } +/* +FUNCTION + bfd_core_file_pid + +SYNOPSIS + int bfd_core_file_pid (bfd *abfd); + +DESCRIPTION + + Returns the PID of the process the core dump the BFD + @var{abfd} is attached to was generated from. +*/ + +int +bfd_core_file_pid (bfd *abfd) +{ + if (abfd->format != bfd_core) + { + bfd_set_error (bfd_error_invalid_operation); + return 0; + } + return BFD_SEND (abfd, _core_file_pid, (abfd)); +} + + /* FUNCTION core_file_matches_executable_p SYNOPSIS - bfd_boolean core_file_matches_executable_p - (bfd *core_bfd, bfd *exec_bfd); + bool core_file_matches_executable_p + (bfd *core_bfd, bfd *exec_bfd); DESCRIPTION Return <> if the core file attached to @var{core_bfd} was generated by a run of the executable file attached to @var{exec_bfd}, <> otherwise. */ -bfd_boolean -core_file_matches_executable_p (core_bfd, exec_bfd) - bfd *core_bfd, *exec_bfd; + +bool +core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) +{ + if (core_bfd->format != bfd_core || exec_bfd->format != bfd_object) + { + bfd_set_error (bfd_error_wrong_format); + return false; + } + + return BFD_SEND (core_bfd, _core_file_matches_executable_p, + (core_bfd, exec_bfd)); +} + +/* +FUNCTION + generic_core_file_matches_executable_p + +SYNOPSIS + bool generic_core_file_matches_executable_p + (bfd *core_bfd, bfd *exec_bfd); + +DESCRIPTION + Return TRUE if the core file attached to @var{core_bfd} + was generated by a run of the executable file attached + to @var{exec_bfd}. The match is based on executable + basenames only. + + Note: When not able to determine the core file failing + command or the executable name, we still return TRUE even + though we're not sure that core file and executable match. + This is to avoid generating a false warning in situations + where we really don't know whether they match or not. +*/ + +bool +generic_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) { - if ((core_bfd->format != bfd_core) || (exec_bfd->format != bfd_object)) { - bfd_set_error (bfd_error_wrong_format); - return FALSE; - } + const char *exec; + const char *core; + const char *last_slash; + + if (exec_bfd == NULL || core_bfd == NULL) + return true; + + /* The cast below is to avoid a compiler warning due to the assignment + of the const char * returned by bfd_core_file_failing_command to a + non-const char *. In this case, the assignement does not lead to + breaking the const, as we're only reading the string. */ + + core = bfd_core_file_failing_command (core_bfd); + if (core == NULL) + return true; - return BFD_SEND (core_bfd, _core_file_matches_executable_p, - (core_bfd, exec_bfd)); + exec = bfd_get_filename (exec_bfd); + if (exec == NULL) + return true; + + last_slash = strrchr (core, '/'); + if (last_slash != NULL) + core = last_slash + 1; + + last_slash = strrchr (exec, '/'); + if (last_slash != NULL) + exec = last_slash + 1; + + return filename_cmp (exec, core) == 0; } +