218 	struct cred *new;  in cred_alloc_blank()  local
220 	new = kmem_cache_zalloc(cred_jar, GFP_KERNEL);  in cred_alloc_blank()
221 	if (!new)  in cred_alloc_blank()
224 	atomic_set(&new->usage, 1);  in cred_alloc_blank()
226 	new->magic = CRED_MAGIC;  in cred_alloc_blank()
229 	if (security_cred_alloc_blank(new, GFP_KERNEL_ACCOUNT) < 0)  in cred_alloc_blank()
232 	return new;  in cred_alloc_blank()
235 	abort_creds(new);  in cred_alloc_blank()
257 	struct cred *new;  in prepare_creds()  local
261 	new = kmem_cache_alloc(cred_jar, GFP_KERNEL);  in prepare_creds()
262 	if (!new)  in prepare_creds()
265 	kdebug("prepare_creds() alloc %p", new);  in prepare_creds()
268 	memcpy(new, old, sizeof(struct cred));  in prepare_creds()
270 	new->non_rcu = 0;  in prepare_creds()
271 	atomic_set(&new->usage, 1);  in prepare_creds()
272 	set_cred_subscribers(new, 0);  in prepare_creds()
273 	get_group_info(new->group_info);  in prepare_creds()
274 	get_uid(new->user);  in prepare_creds()
275 	get_user_ns(new->user_ns);  in prepare_creds()
278 	key_get(new->session_keyring);  in prepare_creds()
279 	key_get(new->process_keyring);  in prepare_creds()
280 	key_get(new->thread_keyring);  in prepare_creds()
281 	key_get(new->request_key_auth);  in prepare_creds()
285 	new->security = NULL;  in prepare_creds()
288 	if (security_prepare_creds(new, old, GFP_KERNEL_ACCOUNT) < 0)  in prepare_creds()
290 	validate_creds(new);  in prepare_creds()
291 	return new;  in prepare_creds()
294 	abort_creds(new);  in prepare_creds()
305 	struct cred *new;  in prepare_exec_creds()  local
307 	new = prepare_creds();  in prepare_exec_creds()
308 	if (!new)  in prepare_exec_creds()
309 		return new;  in prepare_exec_creds()
313 	key_put(new->thread_keyring);  in prepare_exec_creds()
314 	new->thread_keyring = NULL;  in prepare_exec_creds()
317 	key_put(new->process_keyring);  in prepare_exec_creds()
318 	new->process_keyring = NULL;  in prepare_exec_creds()
321 	new->suid = new->fsuid = new->euid;  in prepare_exec_creds()
322 	new->sgid = new->fsgid = new->egid;  in prepare_exec_creds()
324 	return new;  in prepare_exec_creds()
338 	struct cred *new;  in copy_creds()  local
361 	new = prepare_creds();  in copy_creds()
362 	if (!new)  in copy_creds()
366 		ret = create_user_ns(new);  in copy_creds()
374 	if (new->thread_keyring) {  in copy_creds()
375 		key_put(new->thread_keyring);  in copy_creds()
376 		new->thread_keyring = NULL;  in copy_creds()
378 			install_thread_keyring_to_cred(new);  in copy_creds()
385 		key_put(new->process_keyring);  in copy_creds()
386 		new->process_keyring = NULL;  in copy_creds()
390 	atomic_inc(&new->user->processes);  in copy_creds()
391 	p->cred = p->real_cred = get_cred(new);  in copy_creds()
392 	alter_cred_subscribers(new, 2);  in copy_creds()
393 	validate_creds(new);  in copy_creds()
397 	put_cred(new);  in copy_creds()
440 int commit_creds(struct cred *new)  in commit_creds()  argument
445 	kdebug("commit_creds(%p{%d,%d})", new,  in commit_creds()
446 	       atomic_read(&new->usage),  in commit_creds()
447 	       read_cred_subscribers(new));  in commit_creds()
453 	validate_creds(new);  in commit_creds()
455 	BUG_ON(atomic_read(&new->usage) < 1);  in commit_creds()
457 	get_cred(new); /* we will require a ref for the subj creds too */  in commit_creds()
460 	if (!uid_eq(old->euid, new->euid) ||  in commit_creds()
461 	    !gid_eq(old->egid, new->egid) ||  in commit_creds()
462 	    !uid_eq(old->fsuid, new->fsuid) ||  in commit_creds()
463 	    !gid_eq(old->fsgid, new->fsgid) ||  in commit_creds()
464 	    !cred_cap_issubset(old, new)) {  in commit_creds()
481 	if (!uid_eq(new->fsuid, old->fsuid))  in commit_creds()
482 		key_fsuid_changed(new);  in commit_creds()
483 	if (!gid_eq(new->fsgid, old->fsgid))  in commit_creds()
484 		key_fsgid_changed(new);  in commit_creds()
490 	alter_cred_subscribers(new, 2);  in commit_creds()
491 	if (new->user != old->user)  in commit_creds()
492 		atomic_inc(&new->user->processes);  in commit_creds()
493 	rcu_assign_pointer(task->real_cred, new);  in commit_creds()
494 	rcu_assign_pointer(task->cred, new);  in commit_creds()
495 	trace_android_vh_commit_creds(task, new);  in commit_creds()
496 	if (new->user != old->user)  in commit_creds()
501 	if (!uid_eq(new->uid,   old->uid)  ||  in commit_creds()
502 	    !uid_eq(new->euid,  old->euid) ||  in commit_creds()
503 	    !uid_eq(new->suid,  old->suid) ||  in commit_creds()
504 	    !uid_eq(new->fsuid, old->fsuid))  in commit_creds()
507 	if (!gid_eq(new->gid,   old->gid)  ||  in commit_creds()
508 	    !gid_eq(new->egid,  old->egid) ||  in commit_creds()
509 	    !gid_eq(new->sgid,  old->sgid) ||  in commit_creds()
510 	    !gid_eq(new->fsgid, old->fsgid))  in commit_creds()
527 void abort_creds(struct cred *new)  in abort_creds()  argument
529 	kdebug("abort_creds(%p{%d,%d})", new,  in abort_creds()
530 	       atomic_read(&new->usage),  in abort_creds()
531 	       read_cred_subscribers(new));  in abort_creds()
534 	BUG_ON(read_cred_subscribers(new) != 0);  in abort_creds()
536 	BUG_ON(atomic_read(&new->usage) < 1);  in abort_creds()
537 	put_cred(new);  in abort_creds()
548 const struct cred *override_creds(const struct cred *new)  in override_creds()  argument
552 	kdebug("override_creds(%p{%d,%d})", new,  in override_creds()
553 	       atomic_read(&new->usage),  in override_creds()
554 	       read_cred_subscribers(new));  in override_creds()
557 	validate_creds(new);  in override_creds()
570 	get_new_cred((struct cred *)new);  in override_creds()
571 	alter_cred_subscribers(new, 1);  in override_creds()
572 	rcu_assign_pointer(current->cred, new);  in override_creds()
573 	trace_android_vh_override_creds(current, new);  in override_creds()
691 	struct cred *new;  in prepare_kernel_cred()  local
693 	new = kmem_cache_alloc(cred_jar, GFP_KERNEL);  in prepare_kernel_cred()
694 	if (!new)  in prepare_kernel_cred()
697 	kdebug("prepare_kernel_cred() alloc %p", new);  in prepare_kernel_cred()
706 	*new = *old;  in prepare_kernel_cred()
707 	new->non_rcu = 0;  in prepare_kernel_cred()
708 	atomic_set(&new->usage, 1);  in prepare_kernel_cred()
709 	set_cred_subscribers(new, 0);  in prepare_kernel_cred()
710 	get_uid(new->user);  in prepare_kernel_cred()
711 	get_user_ns(new->user_ns);  in prepare_kernel_cred()
712 	get_group_info(new->group_info);  in prepare_kernel_cred()
715 	new->session_keyring = NULL;  in prepare_kernel_cred()
716 	new->process_keyring = NULL;  in prepare_kernel_cred()
717 	new->thread_keyring = NULL;  in prepare_kernel_cred()
718 	new->request_key_auth = NULL;  in prepare_kernel_cred()
719 	new->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;  in prepare_kernel_cred()
723 	new->security = NULL;  in prepare_kernel_cred()
725 	if (security_prepare_creds(new, old, GFP_KERNEL_ACCOUNT) < 0)  in prepare_kernel_cred()
729 	validate_creds(new);  in prepare_kernel_cred()
730 	return new;  in prepare_kernel_cred()
733 	put_cred(new);  in prepare_kernel_cred()
747 int set_security_override(struct cred *new, u32 secid)  in set_security_override()  argument
749 	return security_kernel_act_as(new, secid);  in set_security_override()
763 int set_security_override_from_ctx(struct cred *new, const char *secctx)  in set_security_override_from_ctx()  argument
772 	return set_security_override(new, secid);  in set_security_override_from_ctx()
785 int set_create_files_as(struct cred *new, struct inode *inode)  in set_create_files_as()  argument
789 	new->fsuid = inode->i_uid;  in set_create_files_as()
790 	new->fsgid = inode->i_gid;  in set_create_files_as()
791 	return security_kernel_create_files_as(new, inode);  in set_create_files_as()