xnu-792.tar.gz

[apple/xnu.git] / bsd / kern / kern_time.c

diff --git a/bsd/kern/kern_time.c b/bsd/kern/kern_time.c
index 78fc316612290dfef8408894cecd0f6441c44d0a..07354b8b7a254f58667359907601a99f02f24ecb 100644 (file)
--- a/bsd/kern/kern_time.c
+++ b/bsd/kern/kern_time.c
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_LICENSE_HEADER_START@
  * 

- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.

  * 
  * 

- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.

  * 
  * @APPLE_LICENSE_HEADER_END@
  */
  * 
  * @APPLE_LICENSE_HEADER_END@
  */


@@ -62,18 +59,38 @@
 #include <sys/resourcevar.h>
 #include <sys/kernel.h>
 #include <sys/systm.h>
 #include <sys/resourcevar.h>
 #include <sys/kernel.h>
 #include <sys/systm.h>

-#include <sys/proc.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>

 #include <sys/vnode.h>
 
 #include <sys/vnode.h>
 

-#include <sys/mount.h>
+#include <sys/mount_internal.h>
+#include <sys/sysproto.h>
+#include <sys/signalvar.h>

 
 #include <kern/clock.h>
 
 #include <kern/clock.h>

+#include <kern/thread_call.h>

 
 #define HZ     100     /* XXX */
 
 
 #define HZ     100     /* XXX */
 

-volatile struct timeval                time;

 /* simple lock used to access timezone, tz structure */
 /* simple lock used to access timezone, tz structure */

-decl_simple_lock_data(, tz_slock);
+lck_spin_t * tz_slock;
+lck_grp_t * tz_slock_grp;
+lck_attr_t * tz_slock_attr;
+lck_grp_attr_t *tz_slock_grp_attr;
+
+static void            setthetime(
+                                       struct timeval  *tv);
+
+void time_zone_slock_init(void);
+
+int gettimeofday(struct proc *p,
+#ifdef __ppc__
+                        struct ppc_gettimeofday_args *uap, 
+#else                   
+                        struct gettimeofday_args *uap, 
+#endif
+                        register_t *retval);
+

 /* 
  * Time of day and interval timer support.
  *
 /* 
  * Time of day and interval timer support.
  *


@@ -82,177 +99,183 @@ decl_simple_lock_data(, tz_slock);
  * here provide support for adding and subtracting timeval structures
  * and decrementing interval timers, optionally reloading the interval
  * timers when they expire.
  * here provide support for adding and subtracting timeval structures
  * and decrementing interval timers, optionally reloading the interval
  * timers when they expire.

+ *
+ * XXX Y2038 bug because of clock_get_calendar_microtime() first argument

  */
  */

-struct gettimeofday_args{
-       struct timeval *tp;
-       struct timezone *tzp;
-};

 /* ARGSUSED */
 int
 /* ARGSUSED */
 int

-gettimeofday(p, uap, retval)
-       struct proc *p;
-       register struct gettimeofday_args *uap;
-       register_t *retval;
+gettimeofday(__unused struct proc *p,
+#ifdef __ppc__
+                        register struct ppc_gettimeofday_args *uap, 
+#else                   
+                        register struct gettimeofday_args *uap, 
+#endif
+                        __unused register_t *retval)

 {
        struct timeval atv;
        int error = 0;
 {
        struct timeval atv;
        int error = 0;

-       extern simple_lock_data_t tz_slock;

        struct timezone ltz; /* local copy */
 
 /*  NOTE THIS implementation is for non ppc architectures only */
 
        if (uap->tp) {
        struct timezone ltz; /* local copy */
 
 /*  NOTE THIS implementation is for non ppc architectures only */
 
        if (uap->tp) {

-               clock_get_calendar_microtime(&atv.tv_sec, &atv.tv_usec);
-               if (error = copyout((caddr_t)&atv, (caddr_t)uap->tp,
-                       sizeof (atv)))
+               clock_get_calendar_microtime((uint32_t *)&atv.tv_sec, &atv.tv_usec);
+               if (IS_64BIT_PROCESS(p)) {
+                       struct user_timeval user_atv;
+                       user_atv.tv_sec = atv.tv_sec;
+                       user_atv.tv_usec = atv.tv_usec;
+                       /*
+                        * This cast is not necessary for PPC, but is
+                        * mostly harmless.
+                        */
+                       error = copyout(&user_atv, CAST_USER_ADDR_T(uap->tp), sizeof(struct user_timeval));
+               } else {
+                       error = copyout(&atv, CAST_USER_ADDR_T(uap->tp), sizeof(struct timeval));
+               }
+               if (error)

                        return(error);
        }
        
        if (uap->tzp) {
                        return(error);
        }
        
        if (uap->tzp) {

-               usimple_lock(&tz_slock);
+               lck_spin_lock(tz_slock);

                ltz = tz;
                ltz = tz;

-               usimple_unlock(&tz_slock);
-               error = copyout((caddr_t)&ltz, (caddr_t)uap->tzp,
+               lck_spin_unlock(tz_slock);
+               error = copyout((caddr_t)&ltz, CAST_USER_ADDR_T(uap->tzp),

                    sizeof (tz));
        }
 
        return(error);
 }
 
                    sizeof (tz));
        }
 
        return(error);
 }
 

-struct settimeofday_args {
-       struct timeval *tv;
-       struct timezone *tzp;
-};
+/*
+ * XXX Y2038 bug because of setthetime() argument
+ */

 /* ARGSUSED */
 int
 /* ARGSUSED */
 int

-settimeofday(p, uap, retval)
-       struct proc *p;
-       struct settimeofday_args  *uap;
-       register_t *retval;
+settimeofday(struct proc *p, struct settimeofday_args  *uap, __unused register_t *retval)

 {
        struct timeval atv;
        struct timezone atz;
 {
        struct timeval atv;
        struct timezone atz;

-       int error, s;
-       extern simple_lock_data_t tz_slock;
+       int error;

 
 

-       if (error = suser(p->p_ucred, &p->p_acflag))
-               return (error);
-       /* Verify all parameters before changing time. */
-       if (uap->tv && (error = copyin((caddr_t)uap->tv,
-           (caddr_t)&atv, sizeof(atv))))
+       if ((error = suser(kauth_cred_get(), &p->p_acflag)))

                return (error);
                return (error);

-       if (uap->tzp && (error = copyin((caddr_t)uap->tzp,
-           (caddr_t)&atz, sizeof(atz))))
+       /* Verify all parameters before changing time */
+       if (uap->tv) {
+               if (IS_64BIT_PROCESS(p)) {
+                       struct user_timeval user_atv;
+                       error = copyin(uap->tv, &user_atv, sizeof(struct user_timeval));
+                       atv.tv_sec = user_atv.tv_sec;
+                       atv.tv_usec = user_atv.tv_usec;
+               } else {
+                       error = copyin(uap->tv, &atv, sizeof(struct timeval));
+               }
+               if (error)
+                       return (error);
+       }
+       if (uap->tzp && (error = copyin(uap->tzp, (caddr_t)&atz, sizeof(atz))))

                return (error);
                return (error);

-       if (uap->tv)
+       if (uap->tv) {
+               timevalfix(&atv);
+               if (atv.tv_sec < 0 || (atv.tv_sec == 0 && atv.tv_usec < 0))
+                       return (EPERM);

                setthetime(&atv);
                setthetime(&atv);

+       }

        if (uap->tzp) {
        if (uap->tzp) {

-               usimple_lock(&tz_slock);
+               lck_spin_lock(tz_slock);

                tz = atz;
                tz = atz;

-               usimple_unlock(&tz_slock);
+               lck_spin_unlock(tz_slock);

        }
        return (0);
 }
 
        }
        return (0);
 }
 

-setthetime(tv)
-       struct timeval *tv;
+static void
+setthetime(
+       struct timeval  *tv)

 {
 {

-       long delta = tv->tv_sec - time.tv_sec;
-

        clock_set_calendar_microtime(tv->tv_sec, tv->tv_usec);
        clock_set_calendar_microtime(tv->tv_sec, tv->tv_usec);

-       boottime.tv_sec += delta;
-#if NFSCLIENT || NFSSERVER
-       lease_updatetime(delta);
-#endif

 }
 
 }
 

-struct adjtime_args {
-       struct timeval *delta;
-       struct timeval *olddelta;
-};
+/*
+ * XXX Y2038 bug because of clock_adjtime() first argument
+ */

 /* ARGSUSED */
 int
 /* ARGSUSED */
 int

-adjtime(p, uap, retval)
-       struct proc *p;
-       register struct adjtime_args *uap;
-       register_t *retval;
+adjtime(struct proc *p, register struct adjtime_args *uap, __unused register_t *retval)

 {
        struct timeval atv;
        int error;
 
 {
        struct timeval atv;
        int error;
 

-       if (error = suser(p->p_ucred, &p->p_acflag))
+       if ((error = suser(kauth_cred_get(), &p->p_acflag)))

                return (error);
                return (error);

-       if (error = copyin((caddr_t)uap->delta,
-                                                       (caddr_t)&atv, sizeof (struct timeval)))
+       if (IS_64BIT_PROCESS(p)) {
+               struct user_timeval user_atv;
+               error = copyin(uap->delta, &user_atv, sizeof(struct user_timeval));
+               atv.tv_sec = user_atv.tv_sec;
+               atv.tv_usec = user_atv.tv_usec;
+       } else {
+               error = copyin(uap->delta, &atv, sizeof(struct timeval));
+       }
+       if (error)

                return (error);
                
                return (error);
                

-    /*
-     * Compute the total correction and the rate at which to apply it.
-     */
-       clock_adjtime(&atv.tv_sec, &atv.tv_usec);
+       /*
+        * Compute the total correction and the rate at which to apply it.
+        */
+       clock_adjtime((int32_t *)&atv.tv_sec, &atv.tv_usec);

 
        if (uap->olddelta) {
 
        if (uap->olddelta) {

-               (void) copyout((caddr_t)&atv,
-                                                       (caddr_t)uap->olddelta, sizeof (struct timeval));
+               if (IS_64BIT_PROCESS(p)) {
+                       struct user_timeval user_atv;
+                       user_atv.tv_sec = atv.tv_sec;
+                       user_atv.tv_usec = atv.tv_usec;
+                       error = copyout(&user_atv, uap->olddelta, sizeof(struct user_timeval));
+               } else {
+                       error = copyout(&atv, uap->olddelta, sizeof(struct timeval));
+               }

        }
 
        return (0);
 }
 
 /*
        }
 
        return (0);
 }
 
 /*

- * Initialze the time of day register. 
- * Trust the RTC except for the case where it is set before 
- * the UNIX epoch. In that case use the the UNIX epoch.
- * The argument passed in is ignored.
+ *     Verify the calendar value.  If negative,
+ *     reset to zero (the epoch).

  */
 void
  */
 void

-inittodr(base)
-       time_t base;
+inittodr(
+       __unused time_t base)

 {
        struct timeval  tv;
 
        /*
         * Assertion:
         * The calendar has already been
 {
        struct timeval  tv;
 
        /*
         * Assertion:
         * The calendar has already been

-        * set up from the battery clock.
+        * set up from the platform clock.

         *
         * The value returned by microtime()
         * is gotten from the calendar.
         */
        microtime(&tv);
 
         *
         * The value returned by microtime()
         * is gotten from the calendar.
         */
        microtime(&tv);
 

-       time = tv;
-       boottime.tv_sec = tv.tv_sec;
-       boottime.tv_usec = 0;
-
-       /*
-        * If the RTC does not have acceptable value, i.e. time before
-        * the UNIX epoch, set it to the UNIX epoch
-        */
-       if (tv.tv_sec < 0) {
+       if (tv.tv_sec < 0 || tv.tv_usec < 0) {

                printf ("WARNING: preposterous time in Real Time Clock");
                printf ("WARNING: preposterous time in Real Time Clock");

-               time.tv_sec = 0;        /* the UNIX epoch */
-               time.tv_usec = 0;
-               setthetime(&time);
-               boottime = time;
+               tv.tv_sec = 0;          /* the UNIX epoch */
+               tv.tv_usec = 0;
+               setthetime(&tv);

                printf(" -- CHECK AND RESET THE DATE!\n");
        }
                printf(" -- CHECK AND RESET THE DATE!\n");
        }

-
-       return;

 }
 
 }
 

-void   timevaladd(
-                       struct timeval  *t1,
-                       struct timeval  *t2);
-void   timevalsub(
-                       struct timeval  *t1,
-                       struct timeval  *t2);
-void   timevalfix(
-                       struct timeval  *t1);
+time_t
+boottime_sec(void)
+{
+       uint32_t        sec, nanosec;
+       clock_get_boottime_nanotime(&sec, &nanosec);
+       return (sec);
+}

 
 

-uint64_t
-               tvtoabstime(
-                       struct timeval  *tvp);
+uint64_t tvtoabstime(struct timeval *tvp);

 
 /*
  * Get value of an interval timer.  The process virtual and
 
 /*
  * Get value of an interval timer.  The process virtual and


@@ -274,16 +297,9 @@ uint64_t
  * absolute time when the timer should go off.
  */
  
  * absolute time when the timer should go off.
  */
  

-struct getitimer_args {
-       u_int   which;
-       struct itimerval *itv;
-}; 

 /* ARGSUSED */
 int
 /* ARGSUSED */
 int

-getitimer(p, uap, retval)
-       struct proc *p;
-       register struct getitimer_args *uap;
-       register_t *retval;
+getitimer(struct proc *p, register struct getitimer_args *uap, __unused register_t *retval)

 {
        struct itimerval aitv;
 
 {
        struct itimerval aitv;
 


@@ -313,15 +329,18 @@ getitimer(p, uap, retval)
        else
                aitv = p->p_stats->p_timer[uap->which];
 
        else
                aitv = p->p_stats->p_timer[uap->which];
 

-       return (copyout((caddr_t)&aitv,
-                                               (caddr_t)uap->itv, sizeof (struct itimerval)));
+       if (IS_64BIT_PROCESS(p)) {
+               struct user_itimerval user_itv;
+               user_itv.it_interval.tv_sec = aitv.it_interval.tv_sec;
+               user_itv.it_interval.tv_usec = aitv.it_interval.tv_usec;
+               user_itv.it_value.tv_sec = aitv.it_value.tv_sec;
+               user_itv.it_value.tv_usec = aitv.it_value.tv_usec;
+               return (copyout((caddr_t)&user_itv, uap->itv, sizeof (struct user_itimerval)));
+       } else {
+               return (copyout((caddr_t)&aitv, uap->itv, sizeof (struct itimerval)));
+       }

 }
 
 }
 

-struct setitimer_args {
-       u_int   which;
-       struct  itimerval *itv;
-       struct  itimerval *oitv;
-};

 /* ARGSUSED */
 int
 setitimer(p, uap, retval)
 /* ARGSUSED */
 int
 setitimer(p, uap, retval)


@@ -330,28 +349,38 @@ setitimer(p, uap, retval)
        register_t *retval;
 {
        struct itimerval aitv;
        register_t *retval;
 {
        struct itimerval aitv;

-       register struct itimerval *itvp;
+       user_addr_t itvp;

        int error;
 
        if (uap->which > ITIMER_PROF)
                return (EINVAL);
        int error;
 
        if (uap->which > ITIMER_PROF)
                return (EINVAL);

-       if ((itvp = uap->itv) &&
-               (error = copyin((caddr_t)itvp,
-                                                       (caddr_t)&aitv, sizeof (struct itimerval))))
-               return (error);
-       if ((uap->itv = uap->oitv) && (error = getitimer(p, uap, retval)))
+       if ((itvp = uap->itv)) {
+               if (IS_64BIT_PROCESS(p)) {
+                       struct user_itimerval user_itv;
+                       if ((error = copyin(itvp, (caddr_t)&user_itv, sizeof (struct user_itimerval))))
+                               return (error);
+                       aitv.it_interval.tv_sec = user_itv.it_interval.tv_sec;
+                       aitv.it_interval.tv_usec = user_itv.it_interval.tv_usec;
+                       aitv.it_value.tv_sec = user_itv.it_value.tv_sec;
+                       aitv.it_value.tv_usec = user_itv.it_value.tv_usec;
+               } else { 
+                       if ((error = copyin(itvp, (caddr_t)&aitv, sizeof (struct itimerval))))
+                               return (error);
+               }
+       }
+       if ((uap->itv = uap->oitv) && (error = getitimer(p, (struct getitimer_args *)uap, retval)))

                return (error);
        if (itvp == 0)
                return (0);
        if (itimerfix(&aitv.it_value) || itimerfix(&aitv.it_interval))
                return (EINVAL);
        if (uap->which == ITIMER_REAL) {
                return (error);
        if (itvp == 0)
                return (0);
        if (itimerfix(&aitv.it_value) || itimerfix(&aitv.it_interval))
                return (EINVAL);
        if (uap->which == ITIMER_REAL) {

-               thread_call_func_cancel(realitexpire, (void *)p->p_pid, FALSE);
+               thread_call_func_cancel((thread_call_func_t)realitexpire, (void *)p->p_pid, FALSE);

                if (timerisset(&aitv.it_value)) {
                        microuptime(&p->p_rtime);
                        timevaladd(&p->p_rtime, &aitv.it_value);
                        thread_call_func_delayed(
                if (timerisset(&aitv.it_value)) {
                        microuptime(&p->p_rtime);
                        timevaladd(&p->p_rtime, &aitv.it_value);
                        thread_call_func_delayed(

-                                                               realitexpire, (void *)p->p_pid,
+                                                               (thread_call_func_t)realitexpire, (void *)p->p_pid,

                                                                                tvtoabstime(&p->p_rtime));
                }
                else
                                                                                tvtoabstime(&p->p_rtime));
                }
                else


@@ -379,8 +408,9 @@ realitexpire(
 {
        register struct proc *p;
        struct timeval  now;
 {
        register struct proc *p;
        struct timeval  now;

-       boolean_t               funnel_state = thread_funnel_set(kernel_flock, TRUE);
+       boolean_t               funnel_state;

 
 

+       funnel_state = thread_funnel_set(kernel_flock, TRUE);

        p = pfind((pid_t)pid);
        if (p == NULL) {
                (void) thread_funnel_set(kernel_flock, FALSE);
        p = pfind((pid_t)pid);
        if (p == NULL) {
                (void) thread_funnel_set(kernel_flock, FALSE);


@@ -413,7 +443,7 @@ realitexpire(
 
        psignal(p, SIGALRM);
 
 
        psignal(p, SIGALRM);
 

-       thread_call_func_delayed(realitexpire, pid, tvtoabstime(&p->p_rtime));
+       thread_call_func_delayed((thread_call_func_t)realitexpire, pid, tvtoabstime(&p->p_rtime));

 
        (void) thread_funnel_set(kernel_flock, FALSE);
 }
 
        (void) thread_funnel_set(kernel_flock, FALSE);
 }


@@ -530,14 +560,14 @@ void
 microtime(
        struct timeval  *tvp)
 {
 microtime(
        struct timeval  *tvp)
 {

-       clock_get_calendar_microtime(&tvp->tv_sec, &tvp->tv_usec);
+       clock_get_calendar_microtime((uint32_t *)&tvp->tv_sec, &tvp->tv_usec);

 }
 
 void
 microuptime(
        struct timeval  *tvp)
 {
 }
 
 void
 microuptime(
        struct timeval  *tvp)
 {

-       clock_get_system_microtime(&tvp->tv_sec, &tvp->tv_usec);
+       clock_get_system_microtime((uint32_t *)&tvp->tv_sec, &tvp->tv_usec);

 }
 
 /*
 }
 
 /*


@@ -547,14 +577,14 @@ void
 nanotime(
        struct timespec *tsp)
 {
 nanotime(
        struct timespec *tsp)
 {

-       clock_get_calendar_nanotime((uint32_t *)&tsp->tv_sec, &tsp->tv_nsec);
+       clock_get_calendar_nanotime((uint32_t *)&tsp->tv_sec, (uint32_t *)&tsp->tv_nsec);

 }
 
 void
 nanouptime(
        struct timespec *tsp)
 {
 }
 
 void
 nanouptime(
        struct timespec *tsp)
 {

-       clock_get_system_nanotime((uint32_t *)&tsp->tv_sec, &tsp->tv_nsec);
+       clock_get_system_nanotime((uint32_t *)&tsp->tv_sec, (uint32_t *)&tsp->tv_nsec);

 }
 
 uint64_t
 }
 
 uint64_t


@@ -573,9 +603,17 @@ tvtoabstime(
 void
 time_zone_slock_init(void)
 {
 void
 time_zone_slock_init(void)
 {

-       extern simple_lock_data_t tz_slock;
+       /* allocate lock group attribute and group */
+       tz_slock_grp_attr = lck_grp_attr_alloc_init();
+       lck_grp_attr_setstat(tz_slock_grp_attr);

 
 

-       simple_lock_init(&tz_slock);
+       tz_slock_grp =  lck_grp_alloc_init("tzlock", tz_slock_grp_attr);

 
 

+       /* Allocate lock attribute */
+       tz_slock_attr = lck_attr_alloc_init();
+       //lck_attr_setdebug(tz_slock_attr);

 
 

+       /* Allocate the spin lock */
+       tz_slock = lck_spin_alloc_init(tz_slock_grp, tz_slock_attr);

 }
 }

+