cred: make the refcount signed

There are asserts on the count being > 0, but they are less useful than
they can be because the type itself is unsigned.

The kernel is compiled with -frapv, making wraparound perfectly defined.

Differential Revision:	https://reviews.freebsd.org/D39220

This commit is contained in:

Mateusz Guzik

2023-03-22 21:44:55 +00:00

parent 9fbeeb6e38

commit 21d29c5192

1 changed files with 1 additions and 1 deletions

									
										sys/sys/ucred.h
									
		+1
		-1
	
												View File
												
				@@ -61,7 +61,7 @@ struct loginclass;

				#if defined(_KERNEL) || defined(_WANT_UCRED)

				struct ucred {

					struct mtx cr_mtx;

					u_int	cr_ref;			/* (c) reference count */

					int	cr_ref;			/* (c) reference count */

					u_int	cr_users;		/* (c) proc + thread using this cred */

					struct auditinfo_addr	cr_audit;	/* Audit properties. */

				#define	cr_startcopy cr_uid