static int
thread_db_load_search (void)
{
VEC (char_ptr) *dir_vec;
char *this_dir;
int i, rc = 0;
if (libthread_db_search_path == NULL)
libthread_db_search_path = xstrdup (LIBTHREAD_DB_SEARCH_PATH);
dir_vec = dirnames_to_char_ptr_vec (libthread_db_search_path);
for (i = 0; VEC_iterate (char_ptr, dir_vec, i, this_dir); ++i)
{
const int pdir_len = sizeof ("$pdir") - 1;
size_t this_dir_len;
this_dir_len = strlen (this_dir);
if (strncmp (this_dir, "$pdir", pdir_len) == 0
&& (this_dir[pdir_len] == '\0'
|| this_dir[pdir_len] == '/'))
{
/* We don't maintain a list of loaded libraries so we don't know
where libpthread lives. We *could* fetch the info, but we don't
do that yet. Ignore it. */
}
else if (strcmp (this_dir, "$sdir") == 0)
{
if (try_thread_db_load_from_sdir ())
{
rc = 1;
break;
}
}
else
{
if (try_thread_db_load_from_dir (this_dir, this_dir_len))
{
rc = 1;
break;
}
}
}
free_char_ptr_vec (dir_vec);
if (debug_threads)
debug_printf ("thread_db_load_search returning %d\n", rc);
return rc;
}
static int
thread_db_load_search (void)
{
int rc = 0;
if (libthread_db_search_path == NULL)
libthread_db_search_path = xstrdup (LIBTHREAD_DB_SEARCH_PATH);
std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec
= dirnames_to_char_ptr_vec (libthread_db_search_path);
for (const gdb::unique_xmalloc_ptr<char> &this_dir_up : dir_vec)
{
char *this_dir = this_dir_up.get ();
const int pdir_len = sizeof ("$pdir") - 1;
size_t this_dir_len;
this_dir_len = strlen (this_dir);
if (strncmp (this_dir, "$pdir", pdir_len) == 0
&& (this_dir[pdir_len] == '\0'
|| this_dir[pdir_len] == '/'))
{
/* We don't maintain a list of loaded libraries so we don't know
where libpthread lives. We *could* fetch the info, but we don't
do that yet. Ignore it. */
}
else if (strcmp (this_dir, "$sdir") == 0)
{
if (try_thread_db_load_from_sdir ())
{
rc = 1;
break;
}
}
else
{
if (try_thread_db_load_from_dir (this_dir, this_dir_len))
{
rc = 1;
break;
}
}
}
if (debug_threads)
debug_printf ("thread_db_load_search returning %d\n", rc);
return rc;
}
gdb_bfd_ref_ptr
build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
{
char *link, *debugdir;
VEC (char_ptr) *debugdir_vec;
struct cleanup *back_to;
int ix;
gdb_bfd_ref_ptr abfd;
int alloc_len;
/* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */
alloc_len = (strlen (debug_file_directory)
+ (sizeof "/.build-id/" - 1) + 1
+ 2 * build_id_len + (sizeof ".debug" - 1) + 1);
link = (char *) alloca (alloc_len);
/* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
cause "/.build-id/..." lookups. */
debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory);
back_to = make_cleanup_free_char_ptr_vec (debugdir_vec);
for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix)
{
size_t debugdir_len = strlen (debugdir);
const gdb_byte *data = build_id;
size_t size = build_id_len;
char *s;
char *filename = NULL;
struct cleanup *inner;
memcpy (link, debugdir, debugdir_len);
s = &link[debugdir_len];
s += sprintf (s, "/.build-id/");
if (size > 0)
{
size--;
s += sprintf (s, "%02x", (unsigned) *data++);
}
if (size > 0)
*s++ = '/';
while (size-- > 0)
s += sprintf (s, "%02x", (unsigned) *data++);
strcpy (s, ".debug");
if (separate_debug_file_debug)
printf_unfiltered (_(" Trying %s\n"), link);
/* lrealpath() is expensive even for the usually non-existent files. */
if (access (link, F_OK) == 0)
filename = lrealpath (link);
if (filename == NULL)
continue;
/* We expect to be silent on the non-existing files. */
inner = make_cleanup (xfree, filename);
abfd = gdb_bfd_open (filename, gnutarget, -1);
do_cleanups (inner);
if (abfd == NULL)
continue;
if (build_id_verify (abfd.get(), build_id_len, build_id))
break;
abfd.release ();
}
do_cleanups (back_to);
return abfd;
}
