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Protect chgsbsize() with splsoftnet(). As discussed with yamt.

This commit is contained in:
christos 2005-05-09 03:27:21 +00:00
parent 56b6919254
commit 0c55badfae
1 changed files with 5 additions and 2 deletions
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7
sys/kern/kern_resource.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_resource.c,v 1.94 2005/05/07 17:42:09 christos Exp $ */
/* $NetBSD: kern_resource.c,v 1.95 2005/05/09 03:27:21 christos Exp $ */
/*-
* Copyright (c) 1982, 1986, 1991, 1993
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_resource.c,v 1.94 2005/05/07 17:42:09 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_resource.c,v 1.95 2005/05/09 03:27:21 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -949,16 +949,19 @@ int
chgsbsize(struct uidinfo *uip, u_long *hiwat, u_long to, rlim_t max)
{
rlim_t nsb;
int s = splsoftnet();
simple_lock(&uip->ui_slock);
nsb = uip->ui_sbsize + to - *hiwat;
if (to > *hiwat && nsb > max) {
simple_unlock(&uip->ui_slock);
splx(s);
return 0;
}
*hiwat = to;
uip->ui_sbsize = nsb;
KASSERT(uip->ui_sbsize >= 0);
simple_unlock(&uip->ui_slock);
splx(s);
return 1;
}