diff options
Diffstat (limited to 'sys/kern/kern_prot.c')
| -rw-r--r-- | sys/kern/kern_prot.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sys/kern/kern_prot.c b/sys/kern/kern_prot.c index ec7ac4d4f32..5622d3b3c94 100644 --- a/sys/kern/kern_prot.c +++ b/sys/kern/kern_prot.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_prot.c,v 1.73 2018/02/20 12:38:58 mpi Exp $ */ +/* $OpenBSD: kern_prot.c,v 1.74 2018/06/21 13:58:21 visa Exp $ */ /* $NetBSD: kern_prot.c,v 1.33 1996/02/09 18:59:42 christos Exp $ */ /* @@ -43,6 +43,7 @@ #include <sys/param.h> #include <sys/acct.h> +#include <sys/atomic.h> #include <sys/systm.h> #include <sys/ucred.h> #include <sys/proc.h> @@ -948,6 +949,17 @@ crget(void) } /* + * Increment the reference count of a cred structure. + * Return the passed structure. + */ +struct ucred * +crhold(struct ucred *cr) +{ + atomic_inc_int(&cr->cr_ref); + return (cr); +} + +/* * Free a cred structure. * Throws away space when ref count gets to 0. */ @@ -955,7 +967,7 @@ void crfree(struct ucred *cr) { - if (--cr->cr_ref == 0) + if (atomic_dec_int_nv(&cr->cr_ref) == 0) pool_put(&ucred_pool, cr); } |