256 	const struct cred *old;  in prepare_creds()  local
267 	old = task->cred;  in prepare_creds()
268 	memcpy(new, old, sizeof(struct cred));  in prepare_creds()
288 	if (security_prepare_creds(new, old, GFP_KERNEL_ACCOUNT) < 0)  in prepare_creds()
443 	const struct cred *old = task->real_cred;  in commit_creds()  local
449 	BUG_ON(task->cred != old);  in commit_creds()
451 	BUG_ON(read_cred_subscribers(old) < 2);  in commit_creds()
452 	validate_creds(old);  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()
483 	if (!gid_eq(new->fsgid, old->fsgid))  in commit_creds()
491 	if (new->user != old->user)  in commit_creds()
496 	if (new->user != old->user)  in commit_creds()
497 		atomic_dec(&old->user->processes);  in commit_creds()
498 	alter_cred_subscribers(old, -2);  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()
514 	put_cred(old);  in commit_creds()
515 	put_cred(old);  in commit_creds()
550 	const struct cred *old = current->cred;  in override_creds()  local
556 	validate_creds(old);  in override_creds()
574 	alter_cred_subscribers(old, -1);  in override_creds()
576 	kdebug("override_creds() = %p{%d,%d}", old,  in override_creds()
577 	       atomic_read(&old->usage),  in override_creds()
578 	       read_cred_subscribers(old));  in override_creds()
579 	return old;  in override_creds()
590 void revert_creds(const struct cred *old)  in revert_creds()  argument
594 	kdebug("revert_creds(%p{%d,%d})", old,  in revert_creds()
595 	       atomic_read(&old->usage),  in revert_creds()
596 	       read_cred_subscribers(old));  in revert_creds()
598 	validate_creds(old);  in revert_creds()
600 	alter_cred_subscribers(old, 1);  in revert_creds()
601 	rcu_assign_pointer(current->cred, old);  in revert_creds()
602 	trace_android_vh_revert_creds(current, old);  in revert_creds()
690 	const struct cred *old;  in prepare_kernel_cred()  local
700 		old = get_task_cred(daemon);  in prepare_kernel_cred()
702 		old = get_cred(&init_cred);  in prepare_kernel_cred()
704 	validate_creds(old);  in prepare_kernel_cred()
706 	*new = *old;  in prepare_kernel_cred()
725 	if (security_prepare_creds(new, old, GFP_KERNEL_ACCOUNT) < 0)  in prepare_kernel_cred()
728 	put_cred(old);  in prepare_kernel_cred()
734 	put_cred(old);  in prepare_kernel_cred()