xnu-1699.32.7.tar.gz

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

diff --git a/bsd/kern/kern_resource.c b/bsd/kern/kern_resource.c
index 02b61872ab463d2ebf642bd66fac6081f56f90c7..d2473dbf0476c2d54e303c72d01cfc0a4ae6526f 100644 (file)
--- a/bsd/kern/kern_resource.c
+++ b/bsd/kern/kern_resource.c
@@ -102,16 +102,18 @@
 
 #include <kern/task.h>
 #include <kern/clock.h>                /* for absolutetime_to_microtime() */
 
 #include <kern/task.h>
 #include <kern/clock.h>                /* for absolutetime_to_microtime() */

-#include <netinet/in.h>                /* for TRAFFIC_MGT_SO_BACKGROUND */
+#include <netinet/in.h>                /* for TRAFFIC_MGT_SO_* */

 #include <sys/socketvar.h>     /* for struct socket */
 
 #include <vm/vm_map.h>
 
 int    donice(struct proc *curp, struct proc *chgp, int n);
 int    dosetrlimit(struct proc *p, u_int which, struct rlimit *limp);
 #include <sys/socketvar.h>     /* for struct socket */
 
 #include <vm/vm_map.h>
 
 int    donice(struct proc *curp, struct proc *chgp, int n);
 int    dosetrlimit(struct proc *p, u_int which, struct rlimit *limp);

-static void do_background_socket(struct proc *curp, thread_t thread, int priority);
-static int do_background_thread(struct proc *curp, int priority);
-static int do_background_task(struct proc *curp, int priority);
+int    uthread_get_background_state(uthread_t);
+static void do_background_socket(struct proc *p, thread_t thread, int priority);
+static int do_background_thread(struct proc *curp, thread_t thread, int priority);
+static int do_background_proc(struct proc *curp, struct proc *targetp, int priority);
+void proc_apply_task_networkbg_internal(proc_t);

 
 rlim_t maxdmap = MAXDSIZ;      /* XXX */ 
 rlim_t maxsmap = MAXSSIZ - PAGE_SIZE;  /* XXX */ 
 
 rlim_t maxdmap = MAXDSIZ;      /* XXX */ 
 rlim_t maxsmap = MAXSSIZ - PAGE_SIZE;  /* XXX */ 


@@ -124,10 +126,10 @@ rlim_t maxsmap = MAXSSIZ - PAGE_SIZE;     /* XXX */
  */
 __private_extern__ int maxfilesperproc = OPEN_MAX;             /* per-proc open files limit */
 
  */
 __private_extern__ int maxfilesperproc = OPEN_MAX;             /* per-proc open files limit */
 

-SYSCTL_INT( _kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
+SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW | CTLFLAG_LOCKED,

                &maxprocperuid, 0, "Maximum processes allowed per userid" );
 
                &maxprocperuid, 0, "Maximum processes allowed per userid" );
 

-SYSCTL_INT( _kern, KERN_MAXFILESPERPROC, maxfilesperproc, CTLFLAG_RW,       
+SYSCTL_INT(_kern, KERN_MAXFILESPERPROC, maxfilesperproc, CTLFLAG_RW | CTLFLAG_LOCKED,

                &maxfilesperproc, 0, "Maximum files allowed open per process" );
 
 /* Args and fn for proc_iteration callback used in setpriority */
                &maxfilesperproc, 0, "Maximum files allowed open per process" );
 
 /* Args and fn for proc_iteration callback used in setpriority */


@@ -231,7 +233,7 @@ getpriority(struct proc *curp, struct getpriority_args *uap, int32_t *retval)
                ut = get_bsdthread_info(thread);
 
                low = 0;
                ut = get_bsdthread_info(thread);
 
                low = 0;

-               if ( (ut->uu_flag & UT_BACKGROUND) != 0 ) {
+               if ( (ut->uu_flag & UT_BACKGROUND_TRAFFIC_MGT) != 0 ) {

                        low = 1;
                }
                break;
                        low = 1;
                }
                break;


@@ -370,8 +372,10 @@ setpriority(struct proc *curp, struct setpriority_args *uap, __unused int32_t *r
                if (uap->who != 0) {
                        return (EINVAL);
                }
                if (uap->who != 0) {
                        return (EINVAL);
                }

-               error = do_background_thread(curp, uap->prio);
-               (void) do_background_socket(curp, current_thread(), uap->prio);
+               error = do_background_thread(curp, current_thread(), uap->prio);
+               if (!error) {
+                       (void) do_background_socket(curp, current_thread(), uap->prio);
+               }

                found++;
                break;
        }
                found++;
                break;
        }


@@ -386,14 +390,11 @@ setpriority(struct proc *curp, struct setpriority_args *uap, __unused int32_t *r
                        refheld = 1;
                }
 
                        refheld = 1;
                }
 

-               error = do_background_task(p, uap->prio);
-               (void) do_background_socket(p, NULL, uap->prio);
+               error = do_background_proc(curp, p, uap->prio);
+               if (!error) {
+                       (void) do_background_socket(p, NULL, uap->prio);
+               }

                
                

-               proc_lock(p);
-               p->p_iopol_disk = (uap->prio == PRIO_DARWIN_BG ? 
-                               IOPOL_THROTTLE : IOPOL_DEFAULT); 
-               proc_unlock(p);
-

                found++;
                if (refheld != 0)
                        proc_rele(p);
                found++;
                if (refheld != 0)
                        proc_rele(p);


@@ -425,9 +426,9 @@ donice(struct proc *curp, struct proc *chgp, int n)
        ucred = kauth_cred_proc_ref(curp);
        my_cred = kauth_cred_proc_ref(chgp);
 
        ucred = kauth_cred_proc_ref(curp);
        my_cred = kauth_cred_proc_ref(chgp);
 

-       if (suser(ucred, NULL) && ucred->cr_ruid &&
+       if (suser(ucred, NULL) && kauth_cred_getruid(ucred) &&

            kauth_cred_getuid(ucred) != kauth_cred_getuid(my_cred) &&
            kauth_cred_getuid(ucred) != kauth_cred_getuid(my_cred) &&

-           ucred->cr_ruid != kauth_cred_getuid(my_cred)) {
+           kauth_cred_getruid(ucred) != kauth_cred_getuid(my_cred)) {

                error = EPERM;
                goto out;
        }
                error = EPERM;
                goto out;
        }


@@ -455,36 +456,97 @@ out:
 }
 
 static int
 }
 
 static int

-do_background_task(struct proc *p, int priority)
+do_background_proc(struct proc *curp, struct proc *targetp, int priority)

 {
        int error = 0;
 {
        int error = 0;

+       kauth_cred_t ucred;
+       kauth_cred_t target_cred;
+#if CONFIG_EMBEDDED

        task_category_policy_data_t info;
        task_category_policy_data_t info;

+#endif
+
+       ucred = kauth_cred_get();
+       target_cred = kauth_cred_proc_ref(targetp);
+
+       if (!kauth_cred_issuser(ucred) && kauth_cred_getruid(ucred) &&
+           kauth_cred_getuid(ucred) != kauth_cred_getuid(target_cred) &&
+           kauth_cred_getruid(ucred) != kauth_cred_getuid(target_cred))
+       {
+               error = EPERM;
+               goto out;
+       }
+
+#if CONFIG_MACF
+       error = mac_proc_check_sched(curp, targetp);
+       if (error) 
+               goto out;
+#endif
+
+#if !CONFIG_EMBEDDED
+       if (priority == PRIO_DARWIN_NONUI)
+               error = proc_apply_task_gpuacc(targetp->task, TASK_POLICY_HWACCESS_GPU_ATTRIBUTE_NOACCESS);
+       else
+               error = proc_set1_bgtaskpolicy(targetp->task, priority);
+       if (error)
+               goto out;
+#else /* !CONFIG_EMBEDDED */

 
 

-       if (priority & PRIO_DARWIN_BG) { 
+       /* set the max scheduling priority on the task */
+       if (priority == PRIO_DARWIN_BG) { 

                info.role = TASK_THROTTLE_APPLICATION;
                info.role = TASK_THROTTLE_APPLICATION;

-       } else {
+       }
+       else if (priority == PRIO_DARWIN_NONUI) { 
+               info.role = TASK_NONUI_APPLICATION;
+       }
+       else {

                info.role = TASK_DEFAULT_APPLICATION;
        }
 
                info.role = TASK_DEFAULT_APPLICATION;
        }
 

-       error = task_policy_set(p->task,
+       error = task_policy_set(targetp->task,

                        TASK_CATEGORY_POLICY,
                        (task_policy_t) &info,
                        TASK_CATEGORY_POLICY_COUNT);
                        TASK_CATEGORY_POLICY,
                        (task_policy_t) &info,
                        TASK_CATEGORY_POLICY_COUNT);

+
+       if (error)
+               goto out;
+
+       proc_lock(targetp);
+
+       /* mark proc structure as backgrounded */
+       if (priority == PRIO_DARWIN_BG) {
+               targetp->p_lflag |= P_LBACKGROUND;
+       } else {
+               targetp->p_lflag &= ~P_LBACKGROUND;
+       }
+
+       /* set or reset the disk I/O priority */
+       targetp->p_iopol_disk = (priority == PRIO_DARWIN_BG ? 
+                       IOPOL_THROTTLE : IOPOL_DEFAULT); 
+
+       proc_unlock(targetp);
+#endif /* !CONFIG_EMBEDDED */
+
+out:
+       kauth_cred_unref(&target_cred);

        return (error);
 }
 
 static void 
        return (error);
 }
 
 static void 

-do_background_socket(struct proc *curp, thread_t thread, int priority)
+do_background_socket(struct proc *p, thread_t thread, int priority)

 {
        struct filedesc                     *fdp;
        struct fileproc                     *fp;
        int                                 i;
 
 {
        struct filedesc                     *fdp;
        struct fileproc                     *fp;
        int                                 i;
 

-       if (priority & PRIO_DARWIN_BG) {
-               /* enable network throttle process-wide (if no thread is specified) */
+       if (priority == PRIO_DARWIN_BG) {
+               /*
+                * For PRIO_DARWIN_PROCESS (thread is NULL), simply mark
+                * the sockets with the background flag.  There's nothing
+                * to do here for the PRIO_DARWIN_THREAD case.
+                */

                if (thread == NULL) {
                if (thread == NULL) {

-                       proc_fdlock(curp);
-                       fdp = curp->p_fd;
+                       proc_fdlock(p);
+                       fdp = p->p_fd;

 
                        for (i = 0; i < fdp->fd_nfiles; i++) {
                                struct socket       *sockp;
 
                        for (i = 0; i < fdp->fd_nfiles; i++) {
                                struct socket       *sockp;


@@ -495,20 +557,21 @@ do_background_socket(struct proc *curp, thread_t thread, int priority)
                                        continue;
                                }
                                sockp = (struct socket *)fp->f_fglob->fg_data;
                                        continue;
                                }
                                sockp = (struct socket *)fp->f_fglob->fg_data;

-                               sockp->so_traffic_mgt_flags |= TRAFFIC_MGT_SO_BACKGROUND;
+                               socket_set_traffic_mgt_flags(sockp, TRAFFIC_MGT_SO_BACKGROUND);

                                sockp->so_background_thread = NULL;
                        }
                                sockp->so_background_thread = NULL;
                        }

-                       proc_fdunlock(curp);
+                       proc_fdunlock(p);

                }
 
        } else {
                }
 
        } else {

+

                /* disable networking IO throttle.
                 * NOTE - It is a known limitation of the current design that we 
                 * could potentially clear TRAFFIC_MGT_SO_BACKGROUND bit for 
                 * sockets created by other threads within this process.  
                 */
                /* disable networking IO throttle.
                 * NOTE - It is a known limitation of the current design that we 
                 * could potentially clear TRAFFIC_MGT_SO_BACKGROUND bit for 
                 * sockets created by other threads within this process.  
                 */

-               proc_fdlock(curp);
-               fdp = curp->p_fd;
+               proc_fdlock(p);
+               fdp = p->p_fd;

                for ( i = 0; i < fdp->fd_nfiles; i++ ) {
                        struct socket       *sockp;
 
                for ( i = 0; i < fdp->fd_nfiles; i++ ) {
                        struct socket       *sockp;
 


@@ -522,10 +585,10 @@ do_background_socket(struct proc *curp, thread_t thread, int priority)
                        if ((thread) && (sockp->so_background_thread != thread)) {
                                continue;
                        }
                        if ((thread) && (sockp->so_background_thread != thread)) {
                                continue;
                        }

-                       sockp->so_traffic_mgt_flags &= ~TRAFFIC_MGT_SO_BACKGROUND;
+                       socket_clear_traffic_mgt_flags(sockp, TRAFFIC_MGT_SO_BACKGROUND);

                        sockp->so_background_thread = NULL;
                }
                        sockp->so_background_thread = NULL;
                }

-               proc_fdunlock(curp);
+               proc_fdunlock(p);

        }
 }
 
        }
 }
 


@@ -534,17 +597,36 @@ do_background_socket(struct proc *curp, thread_t thread, int priority)
  * do_background_thread
  * Returns:    0                       Success
  * XXX - todo - does this need a MACF hook?
  * do_background_thread
  * Returns:    0                       Success
  * XXX - todo - does this need a MACF hook?

+ *
+ * NOTE: To maintain binary compatibility with PRIO_DARWIN_THREAD with respect
+ *      to network traffic management, UT_BACKGROUND_TRAFFIC_MGT is set/cleared
+ *      along with UT_BACKGROUND flag, as the latter alone no longer implies
+ *      any form of traffic regulation (it simply means that the thread is
+ *      background.)  With PRIO_DARWIN_PROCESS, any form of network traffic
+ *      management must be explicitly requested via whatever means appropriate,
+ *      and only TRAFFIC_MGT_SO_BACKGROUND is set via do_background_socket().

  */
 static int
  */
 static int

-do_background_thread(struct proc *curp __unused, int priority)
+do_background_thread(struct proc *curp __unused, thread_t thread, int priority)

 {
 {

-       thread_t                                                        thread;

        struct uthread                                          *ut;
        struct uthread                                          *ut;

+#if !CONFIG_EMBEDDED
+       int error = 0;
+#else /* !CONFIG_EMBEDDED */

        thread_precedence_policy_data_t         policy;
        thread_precedence_policy_data_t         policy;

+#endif /* !CONFIG_EMBEDDED */

        
        

-       thread = current_thread();

        ut = get_bsdthread_info(thread);
 
        ut = get_bsdthread_info(thread);
 

+       /* Backgrounding is unsupported for threads in vfork */
+       if ( (ut->uu_flag & UT_VFORK) != 0) {
+               return(EPERM);
+       }
+
+#if !CONFIG_EMBEDDED
+       error = proc_set1_bgthreadpolicy(curp->task, thread_tid(thread), priority);
+       return(error);
+#else /* !CONFIG_EMBEDDED */

        if ( (priority & PRIO_DARWIN_BG) == 0 ) {
                /* turn off backgrounding of thread */
                if ( (ut->uu_flag & UT_BACKGROUND) == 0 ) {
        if ( (priority & PRIO_DARWIN_BG) == 0 ) {
                /* turn off backgrounding of thread */
                if ( (ut->uu_flag & UT_BACKGROUND) == 0 ) {


@@ -552,8 +634,13 @@ do_background_thread(struct proc *curp __unused, int priority)
                        return(0);
                }
 
                        return(0);
                }
 

-               /* clear background bit in thread and disable disk IO throttle */
-               ut->uu_flag &= ~UT_BACKGROUND;
+               /*
+                * Clear background bit in thread and disable disk IO
+                * throttle as well as network traffic management.
+                * The corresponding socket flags for sockets created by
+                * this thread will be cleared in do_background_socket().
+                */
+               ut->uu_flag &= ~(UT_BACKGROUND | UT_BACKGROUND_TRAFFIC_MGT);

                ut->uu_iopol_disk = IOPOL_NORMAL;
 
                /* reset thread priority (we did not save previous value) */
                ut->uu_iopol_disk = IOPOL_NORMAL;
 
                /* reset thread priority (we did not save previous value) */


@@ -570,22 +657,97 @@ do_background_thread(struct proc *curp __unused, int priority)
                return(0);
        }
 
                return(0);
        }
 

-       /* tag thread as background and throttle disk IO */
-       ut->uu_flag |= UT_BACKGROUND;
+       /*
+        * Tag thread as background and throttle disk IO, as well
+        * as regulate network traffics.  Future sockets created
+        * by this thread will have their corresponding socket
+        * flags set at socket create time.
+        */
+       ut->uu_flag |= (UT_BACKGROUND | UT_BACKGROUND_TRAFFIC_MGT);

        ut->uu_iopol_disk = IOPOL_THROTTLE;
 
        policy.importance = INT_MIN;
        thread_policy_set( thread, THREAD_PRECEDENCE_POLICY,
                                           (thread_policy_t)&policy,
                                           THREAD_PRECEDENCE_POLICY_COUNT );
        ut->uu_iopol_disk = IOPOL_THROTTLE;
 
        policy.importance = INT_MIN;
        thread_policy_set( thread, THREAD_PRECEDENCE_POLICY,
                                           (thread_policy_t)&policy,
                                           THREAD_PRECEDENCE_POLICY_COUNT );

-       
+

        /* throttle networking IO happens in socket( ) syscall.
        /* throttle networking IO happens in socket( ) syscall.

-        * If UT_BACKGROUND is set in the current thread then
-        * TRAFFIC_MGT_SO_BACKGROUND socket option is set.
+        * If UT_{BACKGROUND,BACKGROUND_TRAFFIC_MGT} is set in the current
+        * thread then TRAFFIC_MGT_SO_{BACKGROUND,BG_REGULATE} is set.
+        * Existing sockets are taken care of by do_background_socket().

         */
         */

+#endif /* !CONFIG_EMBEDDED */

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

+#if CONFIG_EMBEDDED
+int mach_do_background_thread(thread_t thread, int prio);
+
+int
+mach_do_background_thread(thread_t thread, int prio)
+{
+       int                     error           = 0;
+       struct proc             *curp           = NULL;
+       struct proc             *targetp        = NULL;
+       kauth_cred_t    ucred;
+
+       targetp = get_bsdtask_info(get_threadtask(thread));
+       if (!targetp) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       curp = proc_self();
+       if (curp == PROC_NULL) {
+               return KERN_FAILURE;
+       }
+
+       ucred = kauth_cred_proc_ref(curp);
+
+       if (suser(ucred, NULL) && curp != targetp) {
+               error = KERN_PROTECTION_FAILURE;
+               goto out;
+       }
+
+       error = do_background_thread(curp, thread, prio);
+       if (!error) {
+               (void) do_background_socket(curp, thread, prio);
+       } else {
+               if (error == EPERM) {
+                       error = KERN_PROTECTION_FAILURE;
+               } else {
+                       error = KERN_FAILURE;
+               }
+       }
+
+out:
+       proc_rele(curp);
+       kauth_cred_unref(&ucred);
+       return error;
+}
+#endif /* CONFIG_EMBEDDED */
+
+#if CONFIG_EMBEDDED
+/*
+ * If the thread or its proc has been put into the background
+ * with setpriority(PRIO_DARWIN_{THREAD,PROCESS}, *, PRIO_DARWIN_BG),
+ * report that status.
+ *
+ * Returns: PRIO_DARWIN_BG if background
+ *                     0 if foreground
+ */
+int
+uthread_get_background_state(uthread_t uth)
+{
+       proc_t p = uth->uu_proc;
+       if (p && (p->p_lflag & P_LBACKGROUND))
+               return PRIO_DARWIN_BG;
+       
+       if (uth->uu_flag & UT_BACKGROUND)
+               return PRIO_DARWIN_BG;
+
+       return 0;
+}
+#endif /* CONFIG_EMBEDDED */

 
 /*
  * Returns:    0                       Success
 
 /*
  * Returns:    0                       Success


@@ -1167,19 +1329,70 @@ int
 iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __unused int32_t *retval)
 {
        int     error = 0;
 iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __unused int32_t *retval)
 {
        int     error = 0;

+       struct _iopol_param_t iop_param;
+#if !CONFIG_EMBEDDED
+       int processwide = 0;
+#else /* !CONFIG_EMBEDDED */

        thread_t thread = THREAD_NULL;
        thread_t thread = THREAD_NULL;

-       int *policy;

        struct uthread  *ut = NULL;
        struct uthread  *ut = NULL;

-       struct _iopol_param_t iop_param;
+       int *policy;
+#endif /* !CONFIG_EMBEDDED */

 
        if ((error = copyin(uap->arg, &iop_param, sizeof(iop_param))) != 0)
 
        if ((error = copyin(uap->arg, &iop_param, sizeof(iop_param))) != 0)

-               goto exit;
+               goto out;

 
        if (iop_param.iop_iotype != IOPOL_TYPE_DISK) {
                error = EINVAL;
 
        if (iop_param.iop_iotype != IOPOL_TYPE_DISK) {
                error = EINVAL;

-               goto exit;
+               goto out;

        }
 
        }
 

+#if !CONFIG_EMBEDDED
+       switch (iop_param.iop_scope) {
+       case IOPOL_SCOPE_PROCESS:
+               processwide = 1;
+               break;
+       case IOPOL_SCOPE_THREAD:
+               processwide = 0;
+               break;
+       default:
+               error = EINVAL;
+               goto out;
+       }
+               
+       switch(uap->cmd) {
+       case IOPOL_CMD_SET:
+               switch (iop_param.iop_policy) {
+               case IOPOL_DEFAULT:
+               case IOPOL_NORMAL:
+               case IOPOL_THROTTLE:
+               case IOPOL_PASSIVE:
+                       if(processwide != 0)
+                               proc_apply_task_diskacc(current_task(), iop_param.iop_policy);
+                       else
+                               proc_apply_thread_selfdiskacc(iop_param.iop_policy);
+                               
+                       break;
+               default:
+                       error = EINVAL;
+                       goto out;
+               }
+               break;
+       
+       case IOPOL_CMD_GET:
+               if(processwide != 0)
+                       iop_param.iop_policy = proc_get_task_disacc(current_task());
+               else
+                       iop_param.iop_policy = proc_get_thread_selfdiskacc();
+                       
+               error = copyout((caddr_t)&iop_param, uap->arg, sizeof(iop_param));
+
+               break;
+       default:
+               error = EINVAL; // unknown command
+               break;
+       }
+
+#else /* !CONFIG_EMBEDDED */

        switch (iop_param.iop_scope) {
        case IOPOL_SCOPE_PROCESS:
                policy = &p->p_iopol_disk;
        switch (iop_param.iop_scope) {
        case IOPOL_SCOPE_PROCESS:
                policy = &p->p_iopol_disk;


@@ -1191,7 +1404,7 @@ iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __un
                break;
        default:
                error = EINVAL;
                break;
        default:
                error = EINVAL;

-               goto exit;
+               goto out;

        }
                
        switch(uap->cmd) {
        }
                
        switch(uap->cmd) {


@@ -1207,7 +1420,7 @@ iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __un
                        break;
                default:
                        error = EINVAL;
                        break;
                default:
                        error = EINVAL;

-                       goto exit;
+                       goto out;

                }
                break;
        case IOPOL_CMD_GET:
                }
                break;
        case IOPOL_CMD_GET:


@@ -1233,7 +1446,8 @@ iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __un
                break;
        }
 
                break;
        }
 

-  exit:
+#endif /* !CONFIG_EMBEDDED */
+out:

        *retval = error;
        return (error);
 }
        *retval = error;
        return (error);
 }


@@ -1242,20 +1456,77 @@ iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __un
 boolean_t thread_is_io_throttled(void);
 
 boolean_t
 boolean_t thread_is_io_throttled(void);
 
 boolean_t

-thread_is_io_throttled(void) {
+thread_is_io_throttled(void) 
+{
+
+#if !CONFIG_EMBEDDED

 
 

+       return(proc_get_task_selfdiskacc() == IOPOL_THROTTLE);
+               
+#else /* !CONFIG_EMBEDDED */

        int     policy;
        struct uthread  *ut;
 
        int     policy;
        struct uthread  *ut;
 

-       policy = current_proc()->p_iopol_disk;
-

        ut = get_bsdthread_info(current_thread());
 
        ut = get_bsdthread_info(current_thread());
 

-       if (ut->uu_iopol_disk != IOPOL_DEFAULT)
-               policy = ut->uu_iopol_disk;
+       if(ut){
+               policy = current_proc()->p_iopol_disk;

 
 

-       if (policy == IOPOL_THROTTLE)
-               return TRUE;
+               if (ut->uu_iopol_disk != IOPOL_DEFAULT)
+                       policy = ut->uu_iopol_disk;

 
 

+               if (policy == IOPOL_THROTTLE)
+                       return TRUE;
+       }

        return FALSE;
        return FALSE;

+#endif /* !CONFIG_EMBEDDED */

 }
 }

+
+void
+proc_apply_task_networkbg(void * bsd_info)
+{
+       proc_t p = PROC_NULL;
+       proc_t curp = (proc_t)bsd_info;
+       pid_t pid;
+
+       pid = curp->p_pid;
+       p = proc_find(pid);
+       if (p != PROC_NULL) {
+               do_background_socket(p, NULL, PRIO_DARWIN_BG);
+               proc_rele(p);
+       }
+}
+
+void
+proc_restore_task_networkbg(void * bsd_info)
+{
+       proc_t p = PROC_NULL;
+       proc_t curp = (proc_t)bsd_info;
+       pid_t pid;
+
+       pid = curp->p_pid;
+       p = proc_find(pid);
+       if (p != PROC_NULL) {
+               do_background_socket(p, NULL, 0);
+               proc_rele(p);
+       }
+
+}
+
+void
+proc_set_task_networkbg(void * bsdinfo, int setbg)
+{
+       if (setbg != 0)
+               proc_apply_task_networkbg(bsdinfo);
+       else
+               proc_restore_task_networkbg(bsdinfo);
+}
+
+void
+proc_apply_task_networkbg_internal(proc_t p)
+{
+       if (p != PROC_NULL) {
+               do_background_socket(p, NULL, PRIO_DARWIN_BG);
+       }
+}
+