mirror of
https://sourceware.org/git/binutils-gdb.git
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40135bb14b
gdb/ 2013-10-09 Jan Kratochvil <jan.kratochvil@redhat.com> New flag OBJF_NOT_FILENAME. * auto-load.c (auto_load_objfile_script): Check also OBJF_NOT_FILENAME. * jit.c (jit_object_close_impl): Use OBJF_NOT_FILENAME for allocate_objfile. (jit_bfd_try_read_symtab): Use OBJF_NOT_FILENAME for symbol_file_add_from_bfd. * jv-lang.c (get_dynamics_objfile): Use OBJF_NOT_FILENAME for allocate_objfile. * objfiles.c (allocate_objfile): Assert OBJF_NOT_FILENAME if NAME is NULL. * objfiles.h (OBJF_NOT_FILENAME): New.
1308 lines
39 KiB
C
1308 lines
39 KiB
C
/* GDB routines for supporting auto-loaded scripts.
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Copyright (C) 2012-2013 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "auto-load.h"
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#include "progspace.h"
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#include "python/python.h"
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#include "gdb_regex.h"
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#include "ui-out.h"
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#include "filenames.h"
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#include "command.h"
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#include "observer.h"
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#include "objfiles.h"
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#include "exceptions.h"
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#include "cli/cli-script.h"
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#include "gdbcmd.h"
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#include "cli/cli-decode.h"
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#include "cli/cli-setshow.h"
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#include "gdb_vecs.h"
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#include "readline/tilde.h"
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#include "completer.h"
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#include "observer.h"
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#include "fnmatch.h"
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#include "top.h"
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#include "filestuff.h"
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/* The suffix of per-objfile scripts to auto-load as non-Python command files.
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E.g. When the program loads libfoo.so, look for libfoo-gdb.gdb. */
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#define GDB_AUTO_FILE_NAME "-gdb.gdb"
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static void source_gdb_script_for_objfile (struct objfile *objfile, FILE *file,
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const char *filename);
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/* Value of the 'set debug auto-load' configuration variable. */
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static int debug_auto_load = 0;
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/* "show" command for the debug_auto_load configuration variable. */
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static void
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show_debug_auto_load (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Debugging output for files "
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"of 'set auto-load ...' is %s.\n"),
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value);
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}
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/* User-settable option to enable/disable auto-loading of GDB_AUTO_FILE_NAME
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scripts:
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set auto-load gdb-scripts on|off
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This is true if we should auto-load associated scripts when an objfile
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is opened, false otherwise. */
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static int auto_load_gdb_scripts = 1;
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/* "show" command for the auto_load_gdb_scripts configuration variable. */
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static void
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show_auto_load_gdb_scripts (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Auto-loading of canned sequences of commands "
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"scripts is %s.\n"),
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value);
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}
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/* Internal-use flag to enable/disable auto-loading.
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This is true if we should auto-load python code when an objfile is opened,
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false otherwise.
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Both auto_load_scripts && global_auto_load must be true to enable
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auto-loading.
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This flag exists to facilitate deferring auto-loading during start-up
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until after ./.gdbinit has been read; it may augment the search directories
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used to find the scripts. */
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int global_auto_load = 1;
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/* Auto-load .gdbinit file from the current directory? */
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int auto_load_local_gdbinit = 1;
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/* Absolute pathname to the current directory .gdbinit, if it exists. */
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char *auto_load_local_gdbinit_pathname = NULL;
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/* Boolean value if AUTO_LOAD_LOCAL_GDBINIT_PATHNAME has been loaded. */
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int auto_load_local_gdbinit_loaded = 0;
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/* "show" command for the auto_load_local_gdbinit configuration variable. */
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static void
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show_auto_load_local_gdbinit (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Auto-loading of .gdbinit script from current "
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"directory is %s.\n"),
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value);
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}
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/* Directory list from which to load auto-loaded scripts. It is not checked
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for absolute paths but they are strongly recommended. It is initialized by
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_initialize_auto_load. */
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static char *auto_load_dir;
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/* "set" command for the auto_load_dir configuration variable. */
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static void
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set_auto_load_dir (char *args, int from_tty, struct cmd_list_element *c)
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{
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/* Setting the variable to "" resets it to the compile time defaults. */
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if (auto_load_dir[0] == '\0')
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{
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xfree (auto_load_dir);
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auto_load_dir = xstrdup (AUTO_LOAD_DIR);
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}
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}
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/* "show" command for the auto_load_dir configuration variable. */
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static void
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show_auto_load_dir (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("List of directories from which to load "
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"auto-loaded scripts is %s.\n"),
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value);
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}
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/* Directory list safe to hold auto-loaded files. It is not checked for
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absolute paths but they are strongly recommended. It is initialized by
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_initialize_auto_load. */
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static char *auto_load_safe_path;
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/* Vector of directory elements of AUTO_LOAD_SAFE_PATH with each one normalized
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by tilde_expand and possibly each entries has added its gdb_realpath
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counterpart. */
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static VEC (char_ptr) *auto_load_safe_path_vec;
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/* Expand $datadir and $debugdir in STRING according to the rules of
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substitute_path_component. Return vector from dirnames_to_char_ptr_vec,
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this vector must be freed by free_char_ptr_vec by the caller. */
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static VEC (char_ptr) *
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auto_load_expand_dir_vars (const char *string)
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{
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VEC (char_ptr) *dir_vec;
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char *s;
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s = xstrdup (string);
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substitute_path_component (&s, "$datadir", gdb_datadir);
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substitute_path_component (&s, "$debugdir", debug_file_directory);
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if (debug_auto_load && strcmp (s, string) != 0)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Expanded $-variables to \"%s\".\n"), s);
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dir_vec = dirnames_to_char_ptr_vec (s);
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xfree(s);
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return dir_vec;
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}
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/* Update auto_load_safe_path_vec from current AUTO_LOAD_SAFE_PATH. */
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static void
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auto_load_safe_path_vec_update (void)
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{
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unsigned len;
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int ix;
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Updating directories of \"%s\".\n"),
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auto_load_safe_path);
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free_char_ptr_vec (auto_load_safe_path_vec);
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auto_load_safe_path_vec = auto_load_expand_dir_vars (auto_load_safe_path);
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len = VEC_length (char_ptr, auto_load_safe_path_vec);
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/* Apply tilde_expand and gdb_realpath to each AUTO_LOAD_SAFE_PATH_VEC
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element. */
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for (ix = 0; ix < len; ix++)
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{
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char *dir = VEC_index (char_ptr, auto_load_safe_path_vec, ix);
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char *expanded = tilde_expand (dir);
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char *real_path = gdb_realpath (expanded);
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/* Ensure the current entry is at least tilde_expand-ed. */
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VEC_replace (char_ptr, auto_load_safe_path_vec, ix, expanded);
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if (debug_auto_load)
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{
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if (strcmp (expanded, dir) == 0)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Using directory \"%s\".\n"),
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expanded);
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else
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Resolved directory \"%s\" "
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"as \"%s\".\n"),
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dir, expanded);
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}
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xfree (dir);
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/* If gdb_realpath returns a different content, append it. */
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if (strcmp (real_path, expanded) == 0)
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xfree (real_path);
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else
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{
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VEC_safe_push (char_ptr, auto_load_safe_path_vec, real_path);
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: And canonicalized as \"%s\".\n"),
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real_path);
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}
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}
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}
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/* Variable gdb_datadir has been set. Update content depending on $datadir. */
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static void
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auto_load_gdb_datadir_changed (void)
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{
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auto_load_safe_path_vec_update ();
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}
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/* "set" command for the auto_load_safe_path configuration variable. */
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static void
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set_auto_load_safe_path (char *args, int from_tty, struct cmd_list_element *c)
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{
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/* Setting the variable to "" resets it to the compile time defaults. */
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if (auto_load_safe_path[0] == '\0')
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{
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xfree (auto_load_safe_path);
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auto_load_safe_path = xstrdup (AUTO_LOAD_SAFE_PATH);
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}
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auto_load_safe_path_vec_update ();
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}
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/* "show" command for the auto_load_safe_path configuration variable. */
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static void
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show_auto_load_safe_path (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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const char *cs;
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/* Check if user has entered either "/" or for example ":".
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But while more complicate content like ":/foo" would still also
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permit any location do not hide those. */
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for (cs = value; *cs && (*cs == DIRNAME_SEPARATOR || IS_DIR_SEPARATOR (*cs));
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cs++);
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if (*cs == 0)
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fprintf_filtered (file, _("Auto-load files are safe to load from any "
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"directory.\n"));
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else
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fprintf_filtered (file, _("List of directories from which it is safe to "
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"auto-load files is %s.\n"),
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value);
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}
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/* "add-auto-load-safe-path" command for the auto_load_safe_path configuration
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variable. */
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static void
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add_auto_load_safe_path (char *args, int from_tty)
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{
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char *s;
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if (args == NULL || *args == 0)
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error (_("\
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Directory argument required.\n\
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Use 'set auto-load safe-path /' for disabling the auto-load safe-path security.\
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"));
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s = xstrprintf ("%s%c%s", auto_load_safe_path, DIRNAME_SEPARATOR, args);
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xfree (auto_load_safe_path);
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auto_load_safe_path = s;
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auto_load_safe_path_vec_update ();
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}
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/* Implementation for filename_is_in_pattern overwriting the caller's FILENAME
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and PATTERN. */
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static int
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filename_is_in_pattern_1 (char *filename, char *pattern)
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{
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size_t pattern_len = strlen (pattern);
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size_t filename_len = strlen (filename);
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog, _("auto-load: Matching file \"%s\" "
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"to pattern \"%s\"\n"),
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filename, pattern);
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/* Trim trailing slashes ("/") from PATTERN. Even for "d:\" paths as
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trailing slashes are trimmed also from FILENAME it still matches
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correctly. */
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while (pattern_len && IS_DIR_SEPARATOR (pattern[pattern_len - 1]))
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pattern_len--;
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pattern[pattern_len] = '\0';
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/* Ensure auto_load_safe_path "/" matches any FILENAME. On MS-Windows
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platform FILENAME even after gdb_realpath does not have to start with
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IS_DIR_SEPARATOR character, such as the 'C:\x.exe' filename. */
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if (pattern_len == 0)
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{
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Matched - empty pattern\n"));
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return 1;
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}
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for (;;)
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{
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/* Trim trailing slashes ("/"). PATTERN also has slashes trimmed the
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same way so they will match. */
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while (filename_len && IS_DIR_SEPARATOR (filename[filename_len - 1]))
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filename_len--;
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filename[filename_len] = '\0';
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if (filename_len == 0)
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{
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Not matched - pattern \"%s\".\n"),
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pattern);
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return 0;
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}
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if (gdb_filename_fnmatch (pattern, filename, FNM_FILE_NAME | FNM_NOESCAPE)
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== 0)
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{
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog, _("auto-load: Matched - file "
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"\"%s\" to pattern \"%s\".\n"),
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filename, pattern);
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return 1;
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}
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/* Trim trailing FILENAME component. */
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while (filename_len > 0 && !IS_DIR_SEPARATOR (filename[filename_len - 1]))
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filename_len--;
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}
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}
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/* Return 1 if FILENAME matches PATTERN or if FILENAME resides in
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a subdirectory of a directory that matches PATTERN. Return 0 otherwise.
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gdb_realpath normalization is never done here. */
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static ATTRIBUTE_PURE int
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filename_is_in_pattern (const char *filename, const char *pattern)
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{
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char *filename_copy, *pattern_copy;
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filename_copy = alloca (strlen (filename) + 1);
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strcpy (filename_copy, filename);
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pattern_copy = alloca (strlen (pattern) + 1);
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strcpy (pattern_copy, pattern);
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return filename_is_in_pattern_1 (filename_copy, pattern_copy);
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}
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/* Return 1 if FILENAME belongs to one of directory components of
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AUTO_LOAD_SAFE_PATH_VEC. Return 0 otherwise.
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auto_load_safe_path_vec_update is never called.
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*FILENAME_REALP may be updated by gdb_realpath of FILENAME - it has to be
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freed by the caller. */
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static int
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filename_is_in_auto_load_safe_path_vec (const char *filename,
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char **filename_realp)
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{
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char *pattern;
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int ix;
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for (ix = 0; VEC_iterate (char_ptr, auto_load_safe_path_vec, ix, pattern);
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++ix)
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if (*filename_realp == NULL && filename_is_in_pattern (filename, pattern))
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break;
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if (pattern == NULL)
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{
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if (*filename_realp == NULL)
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{
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*filename_realp = gdb_realpath (filename);
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if (debug_auto_load && strcmp (*filename_realp, filename) != 0)
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fprintf_unfiltered (gdb_stdlog,
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_("auto-load: Resolved "
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"file \"%s\" as \"%s\".\n"),
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filename, *filename_realp);
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}
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if (strcmp (*filename_realp, filename) != 0)
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for (ix = 0;
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VEC_iterate (char_ptr, auto_load_safe_path_vec, ix, pattern); ++ix)
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if (filename_is_in_pattern (*filename_realp, pattern))
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break;
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}
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if (pattern != NULL)
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{
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if (debug_auto_load)
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fprintf_unfiltered (gdb_stdlog, _("auto-load: File \"%s\" matches "
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"directory \"%s\".\n"),
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filename, pattern);
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return 1;
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}
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return 0;
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}
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/* Return 1 if FILENAME is located in one of the directories of
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AUTO_LOAD_SAFE_PATH. Otherwise call warning and return 0. FILENAME does
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not have to be an absolute path.
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Existence of FILENAME is not checked. Function will still give a warning
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even if the caller would quietly skip non-existing file in unsafe
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directory. */
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int
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file_is_auto_load_safe (const char *filename, const char *debug_fmt, ...)
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{
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char *filename_real = NULL;
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struct cleanup *back_to;
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static int advice_printed = 0;
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if (debug_auto_load)
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{
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va_list debug_args;
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va_start (debug_args, debug_fmt);
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vfprintf_unfiltered (gdb_stdlog, debug_fmt, debug_args);
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va_end (debug_args);
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}
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back_to = make_cleanup (free_current_contents, &filename_real);
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if (filename_is_in_auto_load_safe_path_vec (filename, &filename_real))
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{
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do_cleanups (back_to);
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return 1;
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}
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auto_load_safe_path_vec_update ();
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if (filename_is_in_auto_load_safe_path_vec (filename, &filename_real))
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{
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do_cleanups (back_to);
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return 1;
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}
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warning (_("File \"%s\" auto-loading has been declined by your "
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"`auto-load safe-path' set to \"%s\"."),
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filename_real, auto_load_safe_path);
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if (!advice_printed)
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{
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const char *homedir = getenv ("HOME");
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char *homeinit;
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if (homedir == NULL)
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homedir = "$HOME";
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homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
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make_cleanup (xfree, homeinit);
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printf_filtered (_("\
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To enable execution of this file add\n\
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\tadd-auto-load-safe-path %s\n\
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line to your configuration file \"%s\".\n\
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To completely disable this security protection add\n\
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\tset auto-load safe-path /\n\
|
|
line to your configuration file \"%s\".\n\
|
|
For more information about this security protection see the\n\
|
|
\"Auto-loading safe path\" section in the GDB manual. E.g., run from the shell:\n\
|
|
\tinfo \"(gdb)Auto-loading safe path\"\n"),
|
|
filename_real, homeinit, homeinit);
|
|
advice_printed = 1;
|
|
}
|
|
|
|
do_cleanups (back_to);
|
|
return 0;
|
|
}
|
|
|
|
/* Definition of script language for GDB canned sequences of commands. */
|
|
|
|
static const struct script_language script_language_gdb
|
|
= { GDB_AUTO_FILE_NAME, source_gdb_script_for_objfile };
|
|
|
|
static void
|
|
source_gdb_script_for_objfile (struct objfile *objfile, FILE *file,
|
|
const char *filename)
|
|
{
|
|
int is_safe;
|
|
struct auto_load_pspace_info *pspace_info;
|
|
volatile struct gdb_exception e;
|
|
|
|
is_safe = file_is_auto_load_safe (filename, _("auto-load: Loading canned "
|
|
"sequences of commands script "
|
|
"\"%s\" for objfile \"%s\".\n"),
|
|
filename, objfile_name (objfile));
|
|
|
|
/* Add this script to the hash table too so "info auto-load gdb-scripts"
|
|
can print it. */
|
|
pspace_info = get_auto_load_pspace_data_for_loading (current_program_space);
|
|
maybe_add_script (pspace_info, is_safe, filename, filename,
|
|
&script_language_gdb);
|
|
|
|
if (!is_safe)
|
|
return;
|
|
|
|
TRY_CATCH (e, RETURN_MASK_ALL)
|
|
{
|
|
script_from_file (file, filename);
|
|
}
|
|
exception_print (gdb_stderr, e);
|
|
}
|
|
|
|
/* For scripts specified in .debug_gdb_scripts, multiple objfiles may load
|
|
the same script. There's no point in loading the script multiple times,
|
|
and there can be a lot of objfiles and scripts, so we keep track of scripts
|
|
loaded this way. */
|
|
|
|
struct auto_load_pspace_info
|
|
{
|
|
/* For each program space we keep track of loaded scripts. */
|
|
struct htab *loaded_scripts;
|
|
|
|
/* Non-zero if we've issued the warning about an auto-load script not being
|
|
found. We only want to issue this warning once. */
|
|
int script_not_found_warning_printed;
|
|
};
|
|
|
|
/* Objects of this type are stored in the loaded script hash table. */
|
|
|
|
struct loaded_script
|
|
{
|
|
/* Name as provided by the objfile. */
|
|
const char *name;
|
|
|
|
/* Full path name or NULL if script wasn't found (or was otherwise
|
|
inaccessible). */
|
|
const char *full_path;
|
|
|
|
/* Non-zero if this script has been loaded. */
|
|
int loaded;
|
|
|
|
const struct script_language *language;
|
|
};
|
|
|
|
/* Per-program-space data key. */
|
|
static const struct program_space_data *auto_load_pspace_data;
|
|
|
|
static void
|
|
auto_load_pspace_data_cleanup (struct program_space *pspace, void *arg)
|
|
{
|
|
struct auto_load_pspace_info *info;
|
|
|
|
info = program_space_data (pspace, auto_load_pspace_data);
|
|
if (info != NULL)
|
|
{
|
|
if (info->loaded_scripts)
|
|
htab_delete (info->loaded_scripts);
|
|
xfree (info);
|
|
}
|
|
}
|
|
|
|
/* Get the current autoload data. If none is found yet, add it now. This
|
|
function always returns a valid object. */
|
|
|
|
static struct auto_load_pspace_info *
|
|
get_auto_load_pspace_data (struct program_space *pspace)
|
|
{
|
|
struct auto_load_pspace_info *info;
|
|
|
|
info = program_space_data (pspace, auto_load_pspace_data);
|
|
if (info == NULL)
|
|
{
|
|
info = XZALLOC (struct auto_load_pspace_info);
|
|
set_program_space_data (pspace, auto_load_pspace_data, info);
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
/* Hash function for the loaded script hash. */
|
|
|
|
static hashval_t
|
|
hash_loaded_script_entry (const void *data)
|
|
{
|
|
const struct loaded_script *e = data;
|
|
|
|
return htab_hash_string (e->name) ^ htab_hash_pointer (e->language);
|
|
}
|
|
|
|
/* Equality function for the loaded script hash. */
|
|
|
|
static int
|
|
eq_loaded_script_entry (const void *a, const void *b)
|
|
{
|
|
const struct loaded_script *ea = a;
|
|
const struct loaded_script *eb = b;
|
|
|
|
return strcmp (ea->name, eb->name) == 0 && ea->language == eb->language;
|
|
}
|
|
|
|
/* Initialize the table to track loaded scripts.
|
|
Each entry is hashed by the full path name. */
|
|
|
|
static void
|
|
init_loaded_scripts_info (struct auto_load_pspace_info *pspace_info)
|
|
{
|
|
/* Choose 31 as the starting size of the hash table, somewhat arbitrarily.
|
|
Space for each entry is obtained with one malloc so we can free them
|
|
easily. */
|
|
|
|
pspace_info->loaded_scripts = htab_create (31,
|
|
hash_loaded_script_entry,
|
|
eq_loaded_script_entry,
|
|
xfree);
|
|
|
|
pspace_info->script_not_found_warning_printed = FALSE;
|
|
}
|
|
|
|
/* Wrapper on get_auto_load_pspace_data to also allocate the hash table
|
|
for loading scripts. */
|
|
|
|
struct auto_load_pspace_info *
|
|
get_auto_load_pspace_data_for_loading (struct program_space *pspace)
|
|
{
|
|
struct auto_load_pspace_info *info;
|
|
|
|
info = get_auto_load_pspace_data (pspace);
|
|
if (info->loaded_scripts == NULL)
|
|
init_loaded_scripts_info (info);
|
|
|
|
return info;
|
|
}
|
|
|
|
/* Add script NAME in LANGUAGE to hash table of PSPACE_INFO. LOADED 1 if the
|
|
script has been (is going to) be loaded, 0 otherwise (such as if it has not
|
|
been found). FULL_PATH is NULL if the script wasn't found. The result is
|
|
true if the script was already in the hash table. */
|
|
|
|
int
|
|
maybe_add_script (struct auto_load_pspace_info *pspace_info, int loaded,
|
|
const char *name, const char *full_path,
|
|
const struct script_language *language)
|
|
{
|
|
struct htab *htab = pspace_info->loaded_scripts;
|
|
struct loaded_script **slot, entry;
|
|
int in_hash_table;
|
|
|
|
entry.name = name;
|
|
entry.language = language;
|
|
slot = (struct loaded_script **) htab_find_slot (htab, &entry, INSERT);
|
|
in_hash_table = *slot != NULL;
|
|
|
|
/* If this script is not in the hash table, add it. */
|
|
|
|
if (! in_hash_table)
|
|
{
|
|
char *p;
|
|
|
|
/* Allocate all space in one chunk so it's easier to free. */
|
|
*slot = xmalloc (sizeof (**slot)
|
|
+ strlen (name) + 1
|
|
+ (full_path != NULL ? (strlen (full_path) + 1) : 0));
|
|
p = ((char*) *slot) + sizeof (**slot);
|
|
strcpy (p, name);
|
|
(*slot)->name = p;
|
|
if (full_path != NULL)
|
|
{
|
|
p += strlen (p) + 1;
|
|
strcpy (p, full_path);
|
|
(*slot)->full_path = p;
|
|
}
|
|
else
|
|
(*slot)->full_path = NULL;
|
|
(*slot)->loaded = loaded;
|
|
(*slot)->language = language;
|
|
}
|
|
|
|
return in_hash_table;
|
|
}
|
|
|
|
/* Clear the table of loaded section scripts. */
|
|
|
|
static void
|
|
clear_section_scripts (void)
|
|
{
|
|
struct program_space *pspace = current_program_space;
|
|
struct auto_load_pspace_info *info;
|
|
|
|
info = program_space_data (pspace, auto_load_pspace_data);
|
|
if (info != NULL && info->loaded_scripts != NULL)
|
|
{
|
|
htab_delete (info->loaded_scripts);
|
|
info->loaded_scripts = NULL;
|
|
info->script_not_found_warning_printed = FALSE;
|
|
}
|
|
}
|
|
|
|
/* Look for the auto-load script in LANGUAGE associated with OBJFILE where
|
|
OBJFILE's gdb_realpath is REALNAME and load it. Return 1 if we found any
|
|
matching script, return 0 otherwise. */
|
|
|
|
static int
|
|
auto_load_objfile_script_1 (struct objfile *objfile, const char *realname,
|
|
const struct script_language *language)
|
|
{
|
|
char *filename, *debugfile;
|
|
int len, retval;
|
|
FILE *input;
|
|
struct cleanup *cleanups;
|
|
|
|
len = strlen (realname);
|
|
filename = xmalloc (len + strlen (language->suffix) + 1);
|
|
memcpy (filename, realname, len);
|
|
strcpy (filename + len, language->suffix);
|
|
|
|
cleanups = make_cleanup (xfree, filename);
|
|
|
|
input = gdb_fopen_cloexec (filename, "r");
|
|
debugfile = filename;
|
|
if (debug_auto_load)
|
|
fprintf_unfiltered (gdb_stdlog, _("auto-load: Attempted file \"%s\" %s.\n"),
|
|
debugfile, input ? _("exists") : _("does not exist"));
|
|
|
|
if (!input)
|
|
{
|
|
VEC (char_ptr) *vec;
|
|
int ix;
|
|
char *dir;
|
|
|
|
/* Also try the same file in a subdirectory of gdb's data
|
|
directory. */
|
|
|
|
vec = auto_load_expand_dir_vars (auto_load_dir);
|
|
make_cleanup_free_char_ptr_vec (vec);
|
|
|
|
if (debug_auto_load)
|
|
fprintf_unfiltered (gdb_stdlog, _("auto-load: Searching 'set auto-load "
|
|
"scripts-directory' path \"%s\".\n"),
|
|
auto_load_dir);
|
|
|
|
for (ix = 0; VEC_iterate (char_ptr, vec, ix, dir); ++ix)
|
|
{
|
|
debugfile = xmalloc (strlen (dir) + strlen (filename) + 1);
|
|
strcpy (debugfile, dir);
|
|
|
|
/* FILENAME is absolute, so we don't need a "/" here. */
|
|
strcat (debugfile, filename);
|
|
|
|
make_cleanup (xfree, debugfile);
|
|
input = gdb_fopen_cloexec (debugfile, "r");
|
|
if (debug_auto_load)
|
|
fprintf_unfiltered (gdb_stdlog, _("auto-load: Attempted file "
|
|
"\"%s\" %s.\n"),
|
|
debugfile,
|
|
input ? _("exists") : _("does not exist"));
|
|
if (input != NULL)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (input)
|
|
{
|
|
make_cleanup_fclose (input);
|
|
|
|
/* To preserve existing behaviour we don't check for whether the
|
|
script was already in the table, and always load it.
|
|
It's highly unlikely that we'd ever load it twice,
|
|
and these scripts are required to be idempotent under multiple
|
|
loads anyway. */
|
|
language->source_script_for_objfile (objfile, input, debugfile);
|
|
|
|
retval = 1;
|
|
}
|
|
else
|
|
retval = 0;
|
|
|
|
do_cleanups (cleanups);
|
|
return retval;
|
|
}
|
|
|
|
/* Look for the auto-load script in LANGUAGE associated with OBJFILE and load
|
|
it. */
|
|
|
|
void
|
|
auto_load_objfile_script (struct objfile *objfile,
|
|
const struct script_language *language)
|
|
{
|
|
char *realname = gdb_realpath (objfile_name (objfile));
|
|
struct cleanup *cleanups = make_cleanup (xfree, realname);
|
|
|
|
if (!auto_load_objfile_script_1 (objfile, realname, language))
|
|
{
|
|
/* For Windows/DOS .exe executables, strip the .exe suffix, so that
|
|
FOO-gdb.gdb could be used for FOO.exe, and try again. */
|
|
|
|
size_t len = strlen (realname);
|
|
const size_t lexe = sizeof (".exe") - 1;
|
|
|
|
if (len > lexe && strcasecmp (realname + len - lexe, ".exe") == 0)
|
|
{
|
|
len -= lexe;
|
|
realname[len] = '\0';
|
|
if (debug_auto_load)
|
|
fprintf_unfiltered (gdb_stdlog, _("auto-load: Stripped .exe suffix, "
|
|
"retrying with \"%s\".\n"),
|
|
realname);
|
|
auto_load_objfile_script_1 (objfile, realname, language);
|
|
}
|
|
}
|
|
|
|
do_cleanups (cleanups);
|
|
}
|
|
|
|
/* Load any auto-loaded scripts for OBJFILE. */
|
|
|
|
void
|
|
load_auto_scripts_for_objfile (struct objfile *objfile)
|
|
{
|
|
if (!global_auto_load || (objfile->flags & OBJF_NOT_FILENAME) != 0)
|
|
return;
|
|
|
|
if (auto_load_gdb_scripts)
|
|
auto_load_objfile_script (objfile, &script_language_gdb);
|
|
|
|
gdbpy_load_auto_scripts_for_objfile (objfile);
|
|
}
|
|
|
|
/* This is a new_objfile observer callback to auto-load scripts.
|
|
|
|
Two flavors of auto-loaded scripts are supported.
|
|
1) based on the path to the objfile
|
|
2) from .debug_gdb_scripts section */
|
|
|
|
static void
|
|
auto_load_new_objfile (struct objfile *objfile)
|
|
{
|
|
if (!objfile)
|
|
{
|
|
/* OBJFILE is NULL when loading a new "main" symbol-file. */
|
|
clear_section_scripts ();
|
|
return;
|
|
}
|
|
|
|
load_auto_scripts_for_objfile (objfile);
|
|
}
|
|
|
|
/* Collect scripts to be printed in a vec. */
|
|
|
|
typedef struct loaded_script *loaded_script_ptr;
|
|
DEF_VEC_P (loaded_script_ptr);
|
|
|
|
struct collect_matching_scripts_data
|
|
{
|
|
VEC (loaded_script_ptr) **scripts_p;
|
|
|
|
const struct script_language *language;
|
|
};
|
|
|
|
/* Traversal function for htab_traverse.
|
|
Collect the entry if it matches the regexp. */
|
|
|
|
static int
|
|
collect_matching_scripts (void **slot, void *info)
|
|
{
|
|
struct loaded_script *script = *slot;
|
|
struct collect_matching_scripts_data *data = info;
|
|
|
|
if (script->language == data->language && re_exec (script->name))
|
|
VEC_safe_push (loaded_script_ptr, *data->scripts_p, script);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Print SCRIPT. */
|
|
|
|
static void
|
|
print_script (struct loaded_script *script)
|
|
{
|
|
struct ui_out *uiout = current_uiout;
|
|
struct cleanup *chain;
|
|
|
|
chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
|
|
|
|
ui_out_field_string (uiout, "loaded", script->loaded ? "Yes" : "No");
|
|
ui_out_field_string (uiout, "script", script->name);
|
|
ui_out_text (uiout, "\n");
|
|
|
|
/* If the name isn't the full path, print it too. */
|
|
if (script->full_path != NULL
|
|
&& strcmp (script->name, script->full_path) != 0)
|
|
{
|
|
ui_out_text (uiout, "\tfull name: ");
|
|
ui_out_field_string (uiout, "full_path", script->full_path);
|
|
ui_out_text (uiout, "\n");
|
|
}
|
|
|
|
do_cleanups (chain);
|
|
}
|
|
|
|
/* Helper for info_auto_load_scripts to sort the scripts by name. */
|
|
|
|
static int
|
|
sort_scripts_by_name (const void *ap, const void *bp)
|
|
{
|
|
const struct loaded_script *a = *(const struct loaded_script **) ap;
|
|
const struct loaded_script *b = *(const struct loaded_script **) bp;
|
|
|
|
return FILENAME_CMP (a->name, b->name);
|
|
}
|
|
|
|
/* Special internal GDB value of auto_load_info_scripts's PATTERN identify
|
|
the "info auto-load XXX" command has been executed through the general
|
|
"info auto-load" invocation. Extra newline will be printed if needed. */
|
|
char auto_load_info_scripts_pattern_nl[] = "";
|
|
|
|
/* Implementation for "info auto-load gdb-scripts"
|
|
(and "info auto-load python-scripts"). List scripts in LANGUAGE matching
|
|
PATTERN. FROM_TTY is the usual GDB boolean for user interactivity. */
|
|
|
|
void
|
|
auto_load_info_scripts (char *pattern, int from_tty,
|
|
const struct script_language *language)
|
|
{
|
|
struct ui_out *uiout = current_uiout;
|
|
struct auto_load_pspace_info *pspace_info;
|
|
struct cleanup *script_chain;
|
|
VEC (loaded_script_ptr) *scripts;
|
|
int nr_scripts;
|
|
|
|
dont_repeat ();
|
|
|
|
pspace_info = get_auto_load_pspace_data (current_program_space);
|
|
|
|
if (pattern && *pattern)
|
|
{
|
|
char *re_err = re_comp (pattern);
|
|
|
|
if (re_err)
|
|
error (_("Invalid regexp: %s"), re_err);
|
|
}
|
|
else
|
|
{
|
|
re_comp ("");
|
|
}
|
|
|
|
/* We need to know the number of rows before we build the table.
|
|
Plus we want to sort the scripts by name.
|
|
So first traverse the hash table collecting the matching scripts. */
|
|
|
|
scripts = VEC_alloc (loaded_script_ptr, 10);
|
|
script_chain = make_cleanup (VEC_cleanup (loaded_script_ptr), &scripts);
|
|
|
|
if (pspace_info != NULL && pspace_info->loaded_scripts != NULL)
|
|
{
|
|
struct collect_matching_scripts_data data = { &scripts, language };
|
|
|
|
/* Pass a pointer to scripts as VEC_safe_push can realloc space. */
|
|
htab_traverse_noresize (pspace_info->loaded_scripts,
|
|
collect_matching_scripts, &data);
|
|
}
|
|
|
|
nr_scripts = VEC_length (loaded_script_ptr, scripts);
|
|
|
|
/* Table header shifted right by preceding "gdb-scripts: " would not match
|
|
its columns. */
|
|
if (nr_scripts > 0 && pattern == auto_load_info_scripts_pattern_nl)
|
|
ui_out_text (uiout, "\n");
|
|
|
|
make_cleanup_ui_out_table_begin_end (uiout, 2, nr_scripts,
|
|
"AutoLoadedScriptsTable");
|
|
|
|
ui_out_table_header (uiout, 7, ui_left, "loaded", "Loaded");
|
|
ui_out_table_header (uiout, 70, ui_left, "script", "Script");
|
|
ui_out_table_body (uiout);
|
|
|
|
if (nr_scripts > 0)
|
|
{
|
|
int i;
|
|
loaded_script_ptr script;
|
|
|
|
qsort (VEC_address (loaded_script_ptr, scripts),
|
|
VEC_length (loaded_script_ptr, scripts),
|
|
sizeof (loaded_script_ptr), sort_scripts_by_name);
|
|
for (i = 0; VEC_iterate (loaded_script_ptr, scripts, i, script); ++i)
|
|
print_script (script);
|
|
}
|
|
|
|
do_cleanups (script_chain);
|
|
|
|
if (nr_scripts == 0)
|
|
{
|
|
if (pattern && *pattern)
|
|
ui_out_message (uiout, 0, "No auto-load scripts matching %s.\n",
|
|
pattern);
|
|
else
|
|
ui_out_message (uiout, 0, "No auto-load scripts.\n");
|
|
}
|
|
}
|
|
|
|
/* Wrapper for "info auto-load gdb-scripts". */
|
|
|
|
static void
|
|
info_auto_load_gdb_scripts (char *pattern, int from_tty)
|
|
{
|
|
auto_load_info_scripts (pattern, from_tty, &script_language_gdb);
|
|
}
|
|
|
|
/* Implement 'info auto-load local-gdbinit'. */
|
|
|
|
static void
|
|
info_auto_load_local_gdbinit (char *args, int from_tty)
|
|
{
|
|
if (auto_load_local_gdbinit_pathname == NULL)
|
|
printf_filtered (_("Local .gdbinit file was not found.\n"));
|
|
else if (auto_load_local_gdbinit_loaded)
|
|
printf_filtered (_("Local .gdbinit file \"%s\" has been loaded.\n"),
|
|
auto_load_local_gdbinit_pathname);
|
|
else
|
|
printf_filtered (_("Local .gdbinit file \"%s\" has not been loaded.\n"),
|
|
auto_load_local_gdbinit_pathname);
|
|
}
|
|
|
|
/* Return non-zero if SCRIPT_NOT_FOUND_WARNING_PRINTED of PSPACE_INFO was unset
|
|
before calling this function. Always set SCRIPT_NOT_FOUND_WARNING_PRINTED
|
|
of PSPACE_INFO. */
|
|
|
|
int
|
|
script_not_found_warning_print (struct auto_load_pspace_info *pspace_info)
|
|
{
|
|
int retval = !pspace_info->script_not_found_warning_printed;
|
|
|
|
pspace_info->script_not_found_warning_printed = 1;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* The only valid "set auto-load" argument is off|0|no|disable. */
|
|
|
|
static void
|
|
set_auto_load_cmd (char *args, int from_tty)
|
|
{
|
|
struct cmd_list_element *list;
|
|
size_t length;
|
|
|
|
/* See parse_binary_operation in use by the sub-commands. */
|
|
|
|
length = args ? strlen (args) : 0;
|
|
|
|
while (length > 0 && (args[length - 1] == ' ' || args[length - 1] == '\t'))
|
|
length--;
|
|
|
|
if (length == 0 || (strncmp (args, "off", length) != 0
|
|
&& strncmp (args, "0", length) != 0
|
|
&& strncmp (args, "no", length) != 0
|
|
&& strncmp (args, "disable", length) != 0))
|
|
error (_("Valid is only global 'set auto-load no'; "
|
|
"otherwise check the auto-load sub-commands."));
|
|
|
|
for (list = *auto_load_set_cmdlist_get (); list != NULL; list = list->next)
|
|
if (list->var_type == var_boolean)
|
|
{
|
|
gdb_assert (list->type == set_cmd);
|
|
do_set_command (args, from_tty, list);
|
|
}
|
|
}
|
|
|
|
/* Initialize "set auto-load " commands prefix and return it. */
|
|
|
|
struct cmd_list_element **
|
|
auto_load_set_cmdlist_get (void)
|
|
{
|
|
static struct cmd_list_element *retval;
|
|
|
|
if (retval == NULL)
|
|
add_prefix_cmd ("auto-load", class_maintenance, set_auto_load_cmd, _("\
|
|
Auto-loading specific settings.\n\
|
|
Configure various auto-load-specific variables such as\n\
|
|
automatic loading of Python scripts."),
|
|
&retval, "set auto-load ",
|
|
1/*allow-unknown*/, &setlist);
|
|
|
|
return &retval;
|
|
}
|
|
|
|
/* Command "show auto-load" displays summary of all the current
|
|
"show auto-load " settings. */
|
|
|
|
static void
|
|
show_auto_load_cmd (char *args, int from_tty)
|
|
{
|
|
cmd_show_list (*auto_load_show_cmdlist_get (), from_tty, "");
|
|
}
|
|
|
|
/* Initialize "show auto-load " commands prefix and return it. */
|
|
|
|
struct cmd_list_element **
|
|
auto_load_show_cmdlist_get (void)
|
|
{
|
|
static struct cmd_list_element *retval;
|
|
|
|
if (retval == NULL)
|
|
add_prefix_cmd ("auto-load", class_maintenance, show_auto_load_cmd, _("\
|
|
Show auto-loading specific settings.\n\
|
|
Show configuration of various auto-load-specific variables such as\n\
|
|
automatic loading of Python scripts."),
|
|
&retval, "show auto-load ",
|
|
0/*allow-unknown*/, &showlist);
|
|
|
|
return &retval;
|
|
}
|
|
|
|
/* Command "info auto-load" displays whether the various auto-load files have
|
|
been loaded. This is reimplementation of cmd_show_list which inserts
|
|
newlines at proper places. */
|
|
|
|
static void
|
|
info_auto_load_cmd (char *args, int from_tty)
|
|
{
|
|
struct cmd_list_element *list;
|
|
struct cleanup *infolist_chain;
|
|
struct ui_out *uiout = current_uiout;
|
|
|
|
infolist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "infolist");
|
|
|
|
for (list = *auto_load_info_cmdlist_get (); list != NULL; list = list->next)
|
|
{
|
|
struct cleanup *option_chain
|
|
= make_cleanup_ui_out_tuple_begin_end (uiout, "option");
|
|
|
|
gdb_assert (!list->prefixlist);
|
|
gdb_assert (list->type == not_set_cmd);
|
|
|
|
ui_out_field_string (uiout, "name", list->name);
|
|
ui_out_text (uiout, ": ");
|
|
cmd_func (list, auto_load_info_scripts_pattern_nl, from_tty);
|
|
|
|
/* Close the tuple. */
|
|
do_cleanups (option_chain);
|
|
}
|
|
|
|
/* Close the tuple. */
|
|
do_cleanups (infolist_chain);
|
|
}
|
|
|
|
/* Initialize "info auto-load " commands prefix and return it. */
|
|
|
|
struct cmd_list_element **
|
|
auto_load_info_cmdlist_get (void)
|
|
{
|
|
static struct cmd_list_element *retval;
|
|
|
|
if (retval == NULL)
|
|
add_prefix_cmd ("auto-load", class_info, info_auto_load_cmd, _("\
|
|
Print current status of auto-loaded files.\n\
|
|
Print whether various files like Python scripts or .gdbinit files have been\n\
|
|
found and/or loaded."),
|
|
&retval, "info auto-load ",
|
|
0/*allow-unknown*/, &infolist);
|
|
|
|
return &retval;
|
|
}
|
|
|
|
void _initialize_auto_load (void);
|
|
|
|
void
|
|
_initialize_auto_load (void)
|
|
{
|
|
struct cmd_list_element *cmd;
|
|
char *scripts_directory_help;
|
|
|
|
auto_load_pspace_data
|
|
= register_program_space_data_with_cleanup (NULL,
|
|
auto_load_pspace_data_cleanup);
|
|
|
|
observer_attach_new_objfile (auto_load_new_objfile);
|
|
|
|
add_setshow_boolean_cmd ("gdb-scripts", class_support,
|
|
&auto_load_gdb_scripts, _("\
|
|
Enable or disable auto-loading of canned sequences of commands scripts."), _("\
|
|
Show whether auto-loading of canned sequences of commands scripts is enabled."),
|
|
_("\
|
|
If enabled, canned sequences of commands are loaded when the debugger reads\n\
|
|
an executable or shared library.\n\
|
|
This options has security implications for untrusted inferiors."),
|
|
NULL, show_auto_load_gdb_scripts,
|
|
auto_load_set_cmdlist_get (),
|
|
auto_load_show_cmdlist_get ());
|
|
|
|
add_cmd ("gdb-scripts", class_info, info_auto_load_gdb_scripts,
|
|
_("Print the list of automatically loaded sequences of commands.\n\
|
|
Usage: info auto-load gdb-scripts [REGEXP]"),
|
|
auto_load_info_cmdlist_get ());
|
|
|
|
add_setshow_boolean_cmd ("local-gdbinit", class_support,
|
|
&auto_load_local_gdbinit, _("\
|
|
Enable or disable auto-loading of .gdbinit script in current directory."), _("\
|
|
Show whether auto-loading .gdbinit script in current directory is enabled."),
|
|
_("\
|
|
If enabled, canned sequences of commands are loaded when debugger starts\n\
|
|
from .gdbinit file in current directory. Such files are deprecated,\n\
|
|
use a script associated with inferior executable file instead.\n\
|
|
This options has security implications for untrusted inferiors."),
|
|
NULL, show_auto_load_local_gdbinit,
|
|
auto_load_set_cmdlist_get (),
|
|
auto_load_show_cmdlist_get ());
|
|
|
|
add_cmd ("local-gdbinit", class_info, info_auto_load_local_gdbinit,
|
|
_("Print whether current directory .gdbinit file has been loaded.\n\
|
|
Usage: info auto-load local-gdbinit"),
|
|
auto_load_info_cmdlist_get ());
|
|
|
|
auto_load_dir = xstrdup (AUTO_LOAD_DIR);
|
|
scripts_directory_help = xstrprintf (
|
|
#ifdef HAVE_PYTHON
|
|
_("\
|
|
Automatically loaded Python scripts (named OBJFILE%s) and GDB scripts\n\
|
|
(named OBJFILE%s) are located in one of the directories listed by this\n\
|
|
option.\n\
|
|
%s"),
|
|
GDBPY_AUTO_FILE_NAME,
|
|
#else
|
|
_("\
|
|
Automatically loaded GDB scripts (named OBJFILE%s) are located in one\n\
|
|
of the directories listed by this option.\n\
|
|
%s"),
|
|
#endif
|
|
GDB_AUTO_FILE_NAME,
|
|
_("\
|
|
This option is ignored for the kinds of scripts \
|
|
having 'set auto-load ... off'.\n\
|
|
Directories listed here need to be present also \
|
|
in the 'set auto-load safe-path'\n\
|
|
option."));
|
|
add_setshow_optional_filename_cmd ("scripts-directory", class_support,
|
|
&auto_load_dir, _("\
|
|
Set the list of directories from which to load auto-loaded scripts."), _("\
|
|
Show the list of directories from which to load auto-loaded scripts."),
|
|
scripts_directory_help,
|
|
set_auto_load_dir, show_auto_load_dir,
|
|
auto_load_set_cmdlist_get (),
|
|
auto_load_show_cmdlist_get ());
|
|
xfree (scripts_directory_help);
|
|
|
|
auto_load_safe_path = xstrdup (AUTO_LOAD_SAFE_PATH);
|
|
auto_load_safe_path_vec_update ();
|
|
add_setshow_optional_filename_cmd ("safe-path", class_support,
|
|
&auto_load_safe_path, _("\
|
|
Set the list of files and directories that are safe for auto-loading."), _("\
|
|
Show the list of files and directories that are safe for auto-loading."), _("\
|
|
Various files loaded automatically for the 'set auto-load ...' options must\n\
|
|
be located in one of the directories listed by this option. Warning will be\n\
|
|
printed and file will not be used otherwise.\n\
|
|
You can mix both directory and filename entries.\n\
|
|
Setting this parameter to an empty list resets it to its default value.\n\
|
|
Setting this parameter to '/' (without the quotes) allows any file\n\
|
|
for the 'set auto-load ...' options. Each path entry can be also shell\n\
|
|
wildcard pattern; '*' does not match directory separator.\n\
|
|
This option is ignored for the kinds of files having 'set auto-load ... off'.\n\
|
|
This options has security implications for untrusted inferiors."),
|
|
set_auto_load_safe_path,
|
|
show_auto_load_safe_path,
|
|
auto_load_set_cmdlist_get (),
|
|
auto_load_show_cmdlist_get ());
|
|
observer_attach_gdb_datadir_changed (auto_load_gdb_datadir_changed);
|
|
|
|
cmd = add_cmd ("add-auto-load-safe-path", class_support,
|
|
add_auto_load_safe_path,
|
|
_("Add entries to the list of directories from which it is safe "
|
|
"to auto-load files.\n\
|
|
See the commands 'set auto-load safe-path' and 'show auto-load safe-path' to\n\
|
|
access the current full list setting."),
|
|
&cmdlist);
|
|
set_cmd_completer (cmd, filename_completer);
|
|
|
|
add_setshow_boolean_cmd ("auto-load", class_maintenance,
|
|
&debug_auto_load, _("\
|
|
Set auto-load verifications debugging."), _("\
|
|
Show auto-load verifications debugging."), _("\
|
|
When non-zero, debugging output for files of 'set auto-load ...'\n\
|
|
is displayed."),
|
|
NULL, show_debug_auto_load,
|
|
&setdebuglist, &showdebuglist);
|
|
}
|