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Add accounting for RACCT_NPTS.

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This commit is contained in:
Edward Tomasz Napierala 2011-04-02 15:02:42 +00:00
parent 148fa1ce9e
commit 6fd8c2bd8a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=220279
1 changed files with 27 additions and 8 deletions
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35
sys/kern/tty_pts.c
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@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/poll.h>
#include <sys/proc.h>
#include <sys/racct.h>
#include <sys/resourcevar.h>
#include <sys/serial.h>
#include <sys/stat.h>
@ -682,6 +683,7 @@ ptsdrv_free(void *softc)
free_unr(pts_pool, psc->pts_unit);
chgptscnt(psc->pts_cred->cr_ruidinfo, -1, 0);
racct_sub_cred(psc->pts_cred, RACCT_NPTS, 1);
crfree(psc->pts_cred);
knlist_destroy(&psc->pts_inpoll.si_note);
@ -712,7 +714,7 @@ static
int
pts_alloc(int fflags, struct thread *td, struct file *fp)
{
int unit, ok;
int unit, ok, error;
struct tty *tp;
struct pts_softc *psc;
struct proc *p = td->td_proc;
@ -720,14 +722,23 @@ pts_alloc(int fflags, struct thread *td, struct file *fp)
/* Resource limiting. */
PROC_LOCK(p);
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(p, RLIMIT_NPTS));
PROC_UNLOCK(p);
if (!ok)
error = racct_add(p, RACCT_NPTS, 1);
if (error != 0) {
PROC_UNLOCK(p);
return (EAGAIN);
}
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(p, RLIMIT_NPTS));
if (!ok) {
racct_sub(p, RACCT_NPTS, 1);
PROC_UNLOCK(p);
return (EAGAIN);
}
PROC_UNLOCK(p);
/* Try to allocate a new pts unit number. */
unit = alloc_unr(pts_pool);
if (unit < 0) {
racct_sub(p, RACCT_NPTS, 1);
chgptscnt(cred->cr_ruidinfo, -1, 0);
return (EAGAIN);
}
@ -757,7 +768,7 @@ int
pts_alloc_external(int fflags, struct thread *td, struct file *fp,
struct cdev *dev, const char *name)
{
int ok;
int ok, error;
struct tty *tp;
struct pts_softc *psc;
struct proc *p = td->td_proc;
@ -765,10 +776,18 @@ pts_alloc_external(int fflags, struct thread *td, struct file *fp,
/* Resource limiting. */
PROC_LOCK(p);
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(p, RLIMIT_NPTS));
PROC_UNLOCK(p);
if (!ok)
error = racct_add(p, RACCT_NPTS, 1);
if (error != 0) {
PROC_UNLOCK(p);
return (EAGAIN);
}
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(p, RLIMIT_NPTS));
if (!ok) {
racct_sub(p, RACCT_NPTS, 1);
PROC_UNLOCK(p);
return (EAGAIN);
}
PROC_UNLOCK(p);
/* Allocate TTY and softc. */
psc = malloc(sizeof(struct pts_softc), M_PTS, M_WAITOK|M_ZERO);