116 	struct kobj_uevent_env *env = NULL;  in kobject_action_args()  local
127 	env = kzalloc(sizeof(*env), GFP_KERNEL);  in kobject_action_args()
128 	if (!env)  in kobject_action_args()
133 	    add_uevent_var(env, "SYNTH_UUID=%.*s", UUID_STRING_LEN, buf))  in kobject_action_args()
167 		if (add_uevent_var(env, "SYNTH_ARG_%.*s=%.*s",  in kobject_action_args()
175 		kfree(env);  in kobject_action_args()
177 		*ret_env = env;  in kobject_action_args()
196 	struct kobj_uevent_env *env;  in kobject_synth_uevent()  local
212 				count - (action_args - buf), &env);  in kobject_synth_uevent()
221 	r = kobject_uevent_env(kobj, action, env->envp);  in kobject_synth_uevent()
222 	kfree(env);  in kobject_synth_uevent()
251 static int init_uevent_argv(struct kobj_uevent_env *env, const char *subsystem)  in init_uevent_argv()  argument
253 	int buffer_size = sizeof(env->buf) - env->buflen;  in init_uevent_argv()
256 	len = strscpy(&env->buf[env->buflen], subsystem, buffer_size);  in init_uevent_argv()
263 	env->argv[0] = uevent_helper;  in init_uevent_argv()
264 	env->argv[1] = &env->buf[env->buflen];  in init_uevent_argv()
265 	env->argv[2] = NULL;  in init_uevent_argv()
267 	env->buflen += len + 1;  in init_uevent_argv()
278 static struct sk_buff *alloc_uevent_skb(struct kobj_uevent_env *env,  in alloc_uevent_skb()  argument
289 	skb = alloc_skb(len + env->buflen, GFP_KERNEL);  in alloc_uevent_skb()
297 	skb_put_data(skb, env->buf, env->buflen);  in alloc_uevent_skb()
308 static int uevent_net_broadcast_untagged(struct kobj_uevent_env *env,  in uevent_net_broadcast_untagged()  argument
326 			skb = alloc_uevent_skb(env, action_string, devpath);  in uevent_net_broadcast_untagged()
344 				       struct kobj_uevent_env *env,  in uevent_net_broadcast_tagged()  argument
352 	skb = alloc_uevent_skb(env, action_string, devpath);  in uevent_net_broadcast_tagged()
383 					struct kobj_uevent_env *env,  in kobject_uevent_net_broadcast()  argument
410 		ret = uevent_net_broadcast_untagged(env, action_string,  in kobject_uevent_net_broadcast()
413 		ret = uevent_net_broadcast_tagged(net->uevent_sock->sk, env,  in kobject_uevent_net_broadcast()
420 static void zap_modalias_env(struct kobj_uevent_env *env)  in zap_modalias_env()  argument
426 	for (i = 0; i < env->envp_idx;) {  in zap_modalias_env()
427 		if (strncmp(env->envp[i], modalias_prefix,  in zap_modalias_env()
433 		len = strlen(env->envp[i]) + 1;  in zap_modalias_env()
435 		if (i != env->envp_idx - 1) {  in zap_modalias_env()
436 			/* @env->envp[] contains pointers to @env->buf[]  in zap_modalias_env()
437 			 * with @env->buflen chars, and we are removing  in zap_modalias_env()
438 			 * variable MODALIAS here pointed by @env->envp[i]  in zap_modalias_env()
441 			 * 0               @env->buf[]      @env->buflen  in zap_modalias_env()
445 			 * @env->envp[0] @env->envp[i]  @env->envp[i + 1]  in zap_modalias_env()
449 			 * @env->buflen - (@env->envp[i + 1] - @env->envp[0]).  in zap_modalias_env()
451 			memmove(env->envp[i], env->envp[i + 1],  in zap_modalias_env()
452 				env->buflen - (env->envp[i + 1] - env->envp[0]));  in zap_modalias_env()
454 			for (j = i; j < env->envp_idx - 1; j++)  in zap_modalias_env()
455 				env->envp[j] = env->envp[j + 1] - len;  in zap_modalias_env()
458 		env->envp_idx--;  in zap_modalias_env()
459 		env->buflen -= len;  in zap_modalias_env()
476 	struct kobj_uevent_env *env;  in kobject_uevent_env()  local
540 	env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL);  in kobject_uevent_env()
541 	if (!env)  in kobject_uevent_env()
552 	retval = add_uevent_var(env, "ACTION=%s", action_string);  in kobject_uevent_env()
555 	retval = add_uevent_var(env, "DEVPATH=%s", devpath);  in kobject_uevent_env()
558 	retval = add_uevent_var(env, "SUBSYSTEM=%s", subsystem);  in kobject_uevent_env()
565 			retval = add_uevent_var(env, "%s", envp_ext[i]);  in kobject_uevent_env()
573 		retval = uevent_ops->uevent(kobj, env);  in kobject_uevent_env()
595 		zap_modalias_env(env);  in kobject_uevent_env()
603 	retval = add_uevent_var(env, "SEQNUM=%llu",  in kobject_uevent_env()
608 	retval = kobject_uevent_net_broadcast(kobj, env, action_string,  in kobject_uevent_env()
616 		retval = add_uevent_var(env, "HOME=/");  in kobject_uevent_env()
619 		retval = add_uevent_var(env,  in kobject_uevent_env()
623 		retval = init_uevent_argv(env, subsystem);  in kobject_uevent_env()
628 		info = call_usermodehelper_setup(env->argv[0], env->argv,  in kobject_uevent_env()
629 						 env->envp, GFP_KERNEL,  in kobject_uevent_env()
630 						 NULL, cleanup_uevent_env, env);  in kobject_uevent_env()
633 			env = NULL;	/* freed by cleanup_uevent_env */  in kobject_uevent_env()
640 	kfree(env);  in kobject_uevent_env()
662  * @env: environment buffer structure
668 int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...)  in add_uevent_var()  argument
673 	if (env->envp_idx >= ARRAY_SIZE(env->envp)) {  in add_uevent_var()
679 	len = vsnprintf(&env->buf[env->buflen],  in add_uevent_var()
680 			sizeof(env->buf) - env->buflen,  in add_uevent_var()
684 	if (len >= (sizeof(env->buf) - env->buflen)) {  in add_uevent_var()
689 	env->envp[env->envp_idx++] = &env->buf[env->buflen];  in add_uevent_var()
690 	env->buflen += len + 1;  in add_uevent_var()