示例#1
0
char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
{
	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
	const char *home;

	if (!self->has_build_id)
		return NULL;

	build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
	home = getenv("HOME");
	if (bf == NULL) {
		if (asprintf(&bf, "%s/%s/.build-id/%.2s/%s", home,
			     DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2) < 0)
			return NULL;
	} else
		snprintf(bf, size, "%s/%s/.build-id/%.2s/%s", home,
			 DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2);
	return bf;
}
示例#2
0
static int build_id_cache__add_file(const char *filename, const char *debugdir)
{
	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
	u8 build_id[BUILD_ID_SIZE];
	int err;

	if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
	err = build_id_cache__add_s(sbuild_id, debugdir, filename,
				    false, false);
	if (verbose)
		pr_info("Adding %s %s: %s\n", sbuild_id, filename,
			err ? "FAIL" : "Ok");
	return err;
}
示例#3
0
static int build_id_cache__remove_file(const char *filename)
{
	u8 build_id[BUILD_ID_SIZE];
	char sbuild_id[SBUILD_ID_SIZE];

	int err;

	if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
	err = build_id_cache__remove_s(sbuild_id);
	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");

	return err;
}
int map__load(struct map *map, symbol_filter_t filter)
{
	const char *name = map->dso->long_name;
	int nr;

	if (dso__loaded(map->dso, map->type))
		return 0;

	nr = dso__load(map->dso, map, filter);
	if (nr < 0) {
		if (map->dso->has_build_id) {
			char sbuild_id[BUILD_ID_SIZE * 2 + 1];

			build_id__sprintf(map->dso->build_id,
					  sizeof(map->dso->build_id),
					  sbuild_id);
			pr_warning("%s with build id %s not found",
				   name, sbuild_id);
		} else
			pr_warning("Failed to open %s", name);

		pr_warning(", continuing without symbols\n");
		return -1;
	} else if (nr == 0) {
#ifdef HAVE_LIBELF_SUPPORT
		const size_t len = strlen(name);
		const size_t real_len = len - sizeof(DSO__DELETED);

		if (len > sizeof(DSO__DELETED) &&
		    strcmp(name + real_len + 1, DSO__DELETED) == 0) {
			pr_warning("%.*s was updated (is prelink enabled?). "
				"Restart the long running apps that use it!\n",
				   (int)real_len, name);
		} else {
			pr_warning("no symbols found in %s, maybe install "
				   "a debug package?\n", name);
		}
#endif
		return -1;
	}

	return 0;
}
static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
{
	char sbuild_id[SBUILD_ID_SIZE];
	u8 build_id[BUILD_ID_SIZE];
	int err;
	struct nscookie nsc;

	nsinfo__mountns_enter(nsi, &nsc);
	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	nsinfo__mountns_exit(&nsc);
	if (err < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
	err = build_id_cache__add_s(sbuild_id, filename, nsi,
				    false, false);
	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");
	return err;
}
示例#6
0
struct symbol *map__find_symbol(struct map *self, u64 addr,
				symbol_filter_t filter)
{
	if (!dso__loaded(self->dso, self->type)) {
		int nr = dso__load(self->dso, self, filter);

		if (nr < 0) {
			if (self->dso->has_build_id) {
				char sbuild_id[BUILD_ID_SIZE * 2 + 1];

				build_id__sprintf(self->dso->build_id,
						  sizeof(self->dso->build_id),
						  sbuild_id);
				pr_warning("%s with build id %s not found",
					   self->dso->long_name, sbuild_id);
			} else
				pr_warning("Failed to open %s",
					   self->dso->long_name);
			pr_warning(", continuing without symbols\n");
			return NULL;
		} else if (nr == 0) {
			const char *name = self->dso->long_name;
			const size_t len = strlen(name);
			const size_t real_len = len - sizeof(DSO__DELETED);

			if (len > sizeof(DSO__DELETED) &&
			    strcmp(name + real_len + 1, DSO__DELETED) == 0) {
				pr_warning("%.*s was updated, restart the long running apps that use it!\n",
					   (int)real_len, name);
			} else {
				pr_warning("no symbols found in %s, maybe install a debug package?\n", name);
			}
			return NULL;
		}
	}

	return self->dso->find_symbol(self->dso, self->type, addr);
}
示例#7
0
static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
{
	char root_dir[PATH_MAX];
	char notes[PATH_MAX];
	u8 build_id[BUILD_ID_SIZE];
	char *p;

	strlcpy(root_dir, proc_dir, sizeof(root_dir));

	p = strrchr(root_dir, '/');
	if (!p)
		return -1;
	*p = '\0';

	scnprintf(notes, sizeof(notes), "%s/sys/kernel/notes", root_dir);

	if (sysfs__read_build_id(notes, build_id, sizeof(build_id)))
		return -1;

	build_id__sprintf(build_id, sizeof(build_id), sbuildid);

	return 0;
}
示例#8
0
static int build_id_cache__update_file(const char *filename)
{
	u8 build_id[BUILD_ID_SIZE];
	char sbuild_id[BUILD_ID_SIZE * 2 + 1];

	int err = 0;

	if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
	if (build_id_cache__cached(sbuild_id))
		err = build_id_cache__remove_s(sbuild_id);

	if (!err)
		err = build_id_cache__add_s(sbuild_id, filename, false, false);

	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");

	return err;
}
示例#9
0
文件: dso.c 项目: 020gzh/linux
int dso__read_binary_type_filename(const struct dso *dso,
				   enum dso_binary_type type,
				   char *root_dir, char *filename, size_t size)
{
	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
	int ret = 0;
	size_t len;

	switch (type) {
	case DSO_BINARY_TYPE__DEBUGLINK: {
		char *debuglink;

		len = __symbol__join_symfs(filename, size, dso->long_name);
		debuglink = filename + len;
		while (debuglink != filename && *debuglink != '/')
			debuglink--;
		if (*debuglink == '/')
			debuglink++;

		ret = -1;
		if (!is_regular_file(filename))
			break;

		ret = filename__read_debuglink(filename, debuglink,
					       size - (debuglink - filename));
		}
		break;
	case DSO_BINARY_TYPE__BUILD_ID_CACHE:
		/* skip the locally configured cache if a symfs is given */
		if (symbol_conf.symfs[0] ||
		    (dso__build_id_filename(dso, filename, size) == NULL))
			ret = -1;
		break;

	case DSO_BINARY_TYPE__FEDORA_DEBUGINFO:
		len = __symbol__join_symfs(filename, size, "/usr/lib/debug");
		snprintf(filename + len, size - len, "%s.debug", dso->long_name);
		break;

	case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO:
		len = __symbol__join_symfs(filename, size, "/usr/lib/debug");
		snprintf(filename + len, size - len, "%s", dso->long_name);
		break;

	case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO:
	{
		const char *last_slash;
		size_t dir_size;

		last_slash = dso->long_name + dso->long_name_len;
		while (last_slash != dso->long_name && *last_slash != '/')
			last_slash--;

		len = __symbol__join_symfs(filename, size, "");
		dir_size = last_slash - dso->long_name + 2;
		if (dir_size > (size - len)) {
			ret = -1;
			break;
		}
		len += scnprintf(filename + len, dir_size, "%s",  dso->long_name);
		len += scnprintf(filename + len , size - len, ".debug%s",
								last_slash);
		break;
	}

	case DSO_BINARY_TYPE__BUILDID_DEBUGINFO:
		if (!dso->has_build_id) {
			ret = -1;
			break;
		}

		build_id__sprintf(dso->build_id,
				  sizeof(dso->build_id),
				  build_id_hex);
		len = __symbol__join_symfs(filename, size, "/usr/lib/debug/.build-id/");
		snprintf(filename + len, size - len, "%.2s/%s.debug",
			 build_id_hex, build_id_hex + 2);
		break;

	case DSO_BINARY_TYPE__VMLINUX:
	case DSO_BINARY_TYPE__GUEST_VMLINUX:
	case DSO_BINARY_TYPE__SYSTEM_PATH_DSO:
		__symbol__join_symfs(filename, size, dso->long_name);
		break;

	case DSO_BINARY_TYPE__GUEST_KMODULE:
	case DSO_BINARY_TYPE__GUEST_KMODULE_COMP:
		path__join3(filename, size, symbol_conf.symfs,
			    root_dir, dso->long_name);
		break;

	case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE:
	case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP:
		__symbol__join_symfs(filename, size, dso->long_name);
		break;

	case DSO_BINARY_TYPE__KCORE:
	case DSO_BINARY_TYPE__GUEST_KCORE:
		snprintf(filename, size, "%s", dso->long_name);
		break;

	default:
	case DSO_BINARY_TYPE__KALLSYMS:
	case DSO_BINARY_TYPE__GUEST_KALLSYMS:
	case DSO_BINARY_TYPE__JAVA_JIT:
	case DSO_BINARY_TYPE__NOT_FOUND:
		ret = -1;
		break;
	}

	return ret;
}