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rlimit: add and utilize lim_shared

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MFC after:	2 weeks
This commit is contained in:
Mateusz Guzik 2013-12-13 20:53:31 +00:00
parent b13e60da56
commit 3318a9c895
1 changed files with 11 additions and 1 deletions
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12
sys/kern/kern_resource.c
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@ -80,6 +80,8 @@ static int donice(struct thread *td, struct proc *chgp, int n);
static struct uidinfo *uilookup(uid_t uid);
static void ruxagg_locked(struct rusage_ext *rux, struct thread *td);
static __inline int lim_shared(struct plimit *limp);
/*
* Resource controls and accounting.
*/
@ -1129,6 +1131,14 @@ lim_hold(limp)
return (limp);
}
static __inline int
lim_shared(limp)
struct plimit *limp;
{
return (limp->pl_refcnt > 1);
}
void
lim_fork(struct proc *p1, struct proc *p2)
{
@ -1162,7 +1172,7 @@ lim_copy(dst, src)
struct plimit *dst, *src;
{
KASSERT(dst->pl_refcnt == 1, ("lim_copy to shared limit"));
KASSERT(!lim_shared(dst), ("lim_copy to shared limit"));
bcopy(src->pl_rlimit, dst->pl_rlimit, sizeof(src->pl_rlimit));
}