lib/bpf/libbpf.c

362 /* stored as sec_def->cookie for all libbpf-supported SEC()s */
407 	const struct bpf_sec_def *sec_def;
7253 /* this is called as prog->sec_def->prog_prepare_load_fn for libbpf-supported sec_defs */
7368 	/* adjust load_attr if sec_def provides custom preload callback */
7369 	if (prog->sec_def && prog->sec_def->prog_prepare_load_fn) {
7370 		err = prog->sec_def->prog_prepare_load_fn(prog, &load_attr, prog->sec_def->cookie);
7783 		prog->sec_def = find_sec_def(prog->sec_name);
7784 		if (!prog->sec_def) {
7791 		prog->type = prog->sec_def->prog_type;
7792 		prog->expected_attach_type = prog->sec_def->expected_attach_type;
7794 		/* sec_def can have custom callback which should be called
7797 		if (prog->sec_def->prog_setup_fn) {
7798 			err = prog->sec_def->prog_setup_fn(prog, prog->sec_def->cookie);
9146 	if (prog->sec_def != &custom_fallback_def)
9147 		prog->sec_def = NULL;
9345 	struct bpf_sec_def *sec_def;
9354 		sec_def = libbpf_reallocarray(custom_sec_defs, custom_sec_def_cnt + 1,
9355 					      sizeof(*sec_def));
9356 		if (!sec_def)
9359 		custom_sec_defs = sec_def;
9360 		sec_def = &custom_sec_defs[custom_sec_def_cnt];
9365 		sec_def = &custom_fallback_def;
9368 	sec_def->sec = sec ? strdup(sec) : NULL;
9369 	if (sec && !sec_def->sec)
9372 	sec_def->prog_type = prog_type;
9373 	sec_def->expected_attach_type = exp_attach_type;
9374 	sec_def->cookie = OPTS_GET(opts, cookie, 0);
9376 	sec_def->prog_setup_fn = OPTS_GET(opts, prog_setup_fn, NULL);
9377 	sec_def->prog_prepare_load_fn = OPTS_GET(opts, prog_prepare_load_fn, NULL);
9378 	sec_def->prog_attach_fn = OPTS_GET(opts, prog_attach_fn, NULL);
9380 	sec_def->handler_id = ++last_custom_sec_def_handler_id;
9387 	return sec_def->handler_id;
9429 static bool sec_def_matches(const struct bpf_sec_def *sec_def, const char *sec_name)
9431 	size_t len = strlen(sec_def->sec);
9434 	if (sec_def->sec[len - 1] == '/') {
9435 		if (str_has_pfx(sec_name, sec_def->sec))
9443 	if (sec_def->sec[len - 1] == '+') {
9446 		if (strncmp(sec_name, sec_def->sec, len) != 0)
9454 	return strcmp(sec_name, sec_def->sec) == 0;
9459 	const struct bpf_sec_def *sec_def;
9464 		sec_def = &custom_sec_defs[i];
9465 		if (sec_def_matches(sec_def, sec_name))
9466 			return sec_def;
9471 		sec_def = &section_defs[i];
9472 		if (sec_def_matches(sec_def, sec_name))
9473 			return sec_def;
9496 		const struct bpf_sec_def *sec_def = &section_defs[i];
9499 			if (sec_def->prog_prepare_load_fn != libbpf_prepare_prog_load)
9502 			if (!(sec_def->cookie & SEC_ATTACHABLE))
9520 	const struct bpf_sec_def *sec_def;
9526 	sec_def = find_sec_def(name);
9527 	if (sec_def) {
9528 		*prog_type = sec_def->prog_type;
9529 		*expected_attach_type = sec_def->expected_attach_type;
9898 	const struct bpf_sec_def *sec_def;
9903 	sec_def = find_sec_def(name);
9904 	if (!sec_def) {
9915 	if (sec_def->prog_prepare_load_fn != libbpf_prepare_prog_load)
9917 	if (!(sec_def->cookie & SEC_ATTACHABLE))
9920 	*attach_type = sec_def->expected_attach_type;
12662 	if (!prog->sec_def || !prog->sec_def->prog_attach_fn)
12665 	err = prog->sec_def->prog_attach_fn(prog, prog->sec_def->cookie, &link);
13714 		if (!prog->sec_def || !prog->sec_def->prog_attach_fn)
13721 		err = prog->sec_def->prog_attach_fn(prog, prog->sec_def->cookie, link);