xnu-2050.18.24.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..ca41339ea902e04ab7d027c39d20e41d48a8e29e 100644 (file)
--- a/bsd/kern/kern_resource.c
+++ b/bsd/kern/kern_resource.c
@@ -102,16 +102,19 @@
 
 #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, thread_t);
+void proc_restore_task_networkbg_internal(proc_t, thread_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 +127,10 @@ 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 +234,7 @@ 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;


@@ -366,12 +369,17 @@ setpriority(struct proc *curp, struct setpriority_args *uap, __unused int32_t *r
        }
 
        case PRIO_DARWIN_THREAD: {
        }
 
        case PRIO_DARWIN_THREAD: {

+               /* process marked for termination no priority management */
+               if ((curp->p_lflag & P_LPTERMINATE) != 0)
+                       return(EINVAL);

                /* we currently only support the current thread */
                if (uap->who != 0) {
                        return (EINVAL);
                }
                /* we currently only support the current thread */
                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 +394,16 @@ 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);
+               /* process marked for termination no priority management */
+               if ((p->p_lflag & P_LPTERMINATE) != 0) {
+                       error = EINVAL;
+               } else {
+                       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 +435,9 @@ 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 +465,57 @@ 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;

-       task_category_policy_data_t info;
+       kauth_cred_t ucred;
+       kauth_cred_t target_cred;

 
 

-       if (priority & PRIO_DARWIN_BG) { 
-               info.role = TASK_THROTTLE_APPLICATION;
-       } else {
-               info.role = TASK_DEFAULT_APPLICATION;
+       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;

        }
 
        }
 

-       error = task_policy_set(p->task,
-                       TASK_CATEGORY_POLICY,
-                       (task_policy_t) &info,
-                       TASK_CATEGORY_POLICY_COUNT);
+#if CONFIG_MACF
+       error = mac_proc_check_sched(curp, targetp);
+       if (error) 
+               goto out;
+#endif
+
+       if (priority == PRIO_DARWIN_NONUI)
+               error = proc_apply_task_gpuacc(targetp->task, TASK_POLICY_HWACCESS_GPU_ATTRIBUTE_NOACCESS);
+       else
+               error = proc_set_and_apply_bgtaskpolicy(targetp->task, priority);
+       if (error)
+               goto out;
+
+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 +526,21 @@ 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 +554,10 @@ 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);

        }
 }
 
        }
 }
 


@@ -534,58 +566,78 @@ 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;

-       thread_precedence_policy_data_t         policy;
+       int error = 0;

        
        

-       thread = current_thread();

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

-       if ( (priority & PRIO_DARWIN_BG) == 0 ) {
-               /* turn off backgrounding of thread */
-               if ( (ut->uu_flag & UT_BACKGROUND) == 0 ) {
-                       /* already off */
-                       return(0);
-               }
+       /* Backgrounding is unsupported for threads in vfork */
+       if ( (ut->uu_flag & UT_VFORK) != 0) {
+               return(EPERM);
+       }

 
 

-               /* clear background bit in thread and disable disk IO throttle */
-               ut->uu_flag &= ~UT_BACKGROUND;
-               ut->uu_iopol_disk = IOPOL_NORMAL;
+       error = proc_set_and_apply_bgthreadpolicy(curp->task, thread_tid(thread), priority);
+       return(error);

 
 

-               /* reset thread priority (we did not save previous value) */
-               policy.importance = 0;
-               thread_policy_set( thread, THREAD_PRECEDENCE_POLICY,
-                                                  (thread_policy_t)&policy,
-                                                  THREAD_PRECEDENCE_POLICY_COUNT );
-               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;

        }
        }

-       
-       /* background this thread */
-       if ( (ut->uu_flag & UT_BACKGROUND) != 0 ) {
-               /* already backgrounded */
-               return(0);
+
+       curp = proc_self();
+       if (curp == PROC_NULL) {
+               return KERN_FAILURE;

        }
 
        }
 

-       /* tag thread as background and throttle disk IO */
-       ut->uu_flag |= UT_BACKGROUND;
-       ut->uu_iopol_disk = IOPOL_THROTTLE;
+       ucred = kauth_cred_proc_ref(curp);

 
 

-       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.
-        * If UT_BACKGROUND is set in the current thread then
-        * TRAFFIC_MGT_SO_BACKGROUND socket option is set.
-        */
-       return(0);
-}
+       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 */

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


@@ -729,12 +781,7 @@ dosetrlimit(struct proc *p, u_int which, struct rlimit *limp)
                                size = round_page_64(limp->rlim_cur);
                                size -= round_page_64(alimp->rlim_cur);
 
                                size = round_page_64(limp->rlim_cur);
                                size -= round_page_64(alimp->rlim_cur);
 

-#if STACK_GROWTH_UP
-                               /* go to top of current stack */
-                       addr = p->user_stack + round_page_64(alimp->rlim_cur);
-#else  /* STACK_GROWTH_UP */

                        addr = p->user_stack - round_page_64(limp->rlim_cur);
                        addr = p->user_stack - round_page_64(limp->rlim_cur);

-#endif /* STACK_GROWTH_UP */

                        kr = mach_vm_protect(current_map(), 
                                             addr, size,
                                             FALSE, VM_PROT_DEFAULT);
                        kr = mach_vm_protect(current_map(), 
                                             addr, size,
                                             FALSE, VM_PROT_DEFAULT);


@@ -756,28 +803,6 @@ dosetrlimit(struct proc *p, u_int which, struct rlimit *limp)
                         */
                        cur_sp = thread_adjuserstack(current_thread(),
                                                     0);
                         */
                        cur_sp = thread_adjuserstack(current_thread(),
                                                     0);

-#if STACK_GROWTH_UP
-                       if (cur_sp >= p->user_stack &&
-                           cur_sp < (p->user_stack +
-                                     round_page_64(alimp->rlim_cur))) {
-                               /* current stack pointer is in main stack */
-                               if (cur_sp >= (p->user_stack +
-                                              round_page_64(limp->rlim_cur))) {
-                                       /*
-                                        * New limit would cause
-                                        * current usage to be invalid:
-                                        * reject new limit.
-                                        */
-                                       error =  EINVAL;
-                                       goto out;
-                       }
-                       } else {
-                               /* not on the main stack: reject */
-                               error =  EINVAL;
-                               goto out;
-               }
-                                
-#else  /* STACK_GROWTH_UP */

                        if (cur_sp <= p->user_stack &&
                            cur_sp > (p->user_stack -
                                      round_page_64(alimp->rlim_cur))) {
                        if (cur_sp <= p->user_stack &&
                            cur_sp > (p->user_stack -
                                      round_page_64(alimp->rlim_cur))) {


@@ -797,16 +822,11 @@ dosetrlimit(struct proc *p, u_int which, struct rlimit *limp)
                                error =  EINVAL;
                                goto out;
                        }
                                error =  EINVAL;
                                goto out;
                        }

-#endif /* STACK_GROWTH_UP */

                                
                        size = round_page_64(alimp->rlim_cur);
                        size -= round_page_64(limp->rlim_cur);
 
                                
                        size = round_page_64(alimp->rlim_cur);
                        size -= round_page_64(limp->rlim_cur);
 

-#if STACK_GROWTH_UP
-                       addr = p->user_stack + round_page_64(limp->rlim_cur);
-#else  /* STACK_GROWTH_UP */

                        addr = p->user_stack - round_page_64(alimp->rlim_cur);
                        addr = p->user_stack - round_page_64(alimp->rlim_cur);

-#endif /* STACK_GROWTH_UP */

 
                        kr = mach_vm_protect(current_map(),
                                             addr, size,
 
                        kr = mach_vm_protect(current_map(),
                                             addr, size,


@@ -930,15 +950,15 @@ calcru(struct proc *p, struct timeval *up, struct timeval *sp, struct timeval *i
 
        task = p->task;
        if (task) {
 
        task = p->task;
        if (task) {

-               task_basic_info_32_data_t tinfo;
+               mach_task_basic_info_data_t tinfo;

                task_thread_times_info_data_t ttimesinfo;
                task_events_info_data_t teventsinfo;
                mach_msg_type_number_t task_info_count, task_ttimes_count;
                mach_msg_type_number_t task_events_count;
                struct timeval ut,st;
 
                task_thread_times_info_data_t ttimesinfo;
                task_events_info_data_t teventsinfo;
                mach_msg_type_number_t task_info_count, task_ttimes_count;
                mach_msg_type_number_t task_events_count;
                struct timeval ut,st;
 

-               task_info_count = TASK_BASIC_INFO_32_COUNT;
-               task_info(task, TASK_BASIC2_INFO_32,
+               task_info_count = MACH_TASK_BASIC_INFO_COUNT;
+               task_info(task, MACH_TASK_BASIC_INFO,

                          (task_info_t)&tinfo, &task_info_count);
                ut.tv_sec = tinfo.user_time.seconds;
                ut.tv_usec = tinfo.user_time.microseconds;
                          (task_info_t)&tinfo, &task_info_count);
                ut.tv_sec = tinfo.user_time.seconds;
                ut.tv_usec = tinfo.user_time.microseconds;


@@ -974,7 +994,7 @@ calcru(struct proc *p, struct timeval *up, struct timeval *sp, struct timeval *i
                if (p->p_stats->p_ru.ru_nivcsw < 0)
                        p->p_stats->p_ru.ru_nivcsw = 0;
 
                if (p->p_stats->p_ru.ru_nivcsw < 0)
                        p->p_stats->p_ru.ru_nivcsw = 0;
 

-               p->p_stats->p_ru.ru_maxrss = tinfo.resident_size;
+               p->p_stats->p_ru.ru_maxrss = tinfo.resident_size_max;

        }
 }
 
        }
 }
 


@@ -1167,31 +1187,27 @@ 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;

-       thread_t thread = THREAD_NULL;
-       int *policy;
-       struct uthread  *ut = NULL;

        struct _iopol_param_t iop_param;
        struct _iopol_param_t iop_param;

+       int processwide = 0;

 
        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;

        }
 
        switch (iop_param.iop_scope) {
        case IOPOL_SCOPE_PROCESS:
        }
 
        switch (iop_param.iop_scope) {
        case IOPOL_SCOPE_PROCESS:

-               policy = &p->p_iopol_disk;
+               processwide = 1;

                break;
        case IOPOL_SCOPE_THREAD:
                break;
        case IOPOL_SCOPE_THREAD:

-               thread = current_thread();
-               ut = get_bsdthread_info(thread);
-               policy = &ut->uu_iopol_disk;
+               processwide = 0;

                break;
        default:
                error = EINVAL;
                break;
        default:
                error = EINVAL;

-               goto exit;
+               goto out;

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


@@ -1201,39 +1217,34 @@ iopolicysys(__unused struct proc *p, __unused struct iopolicysys_args *uap, __un
                case IOPOL_NORMAL:
                case IOPOL_THROTTLE:
                case IOPOL_PASSIVE:
                case IOPOL_NORMAL:
                case IOPOL_THROTTLE:
                case IOPOL_PASSIVE:

-                       proc_lock(p);
-                       *policy = iop_param.iop_policy;
-                       proc_unlock(p);
+               case IOPOL_UTILITY:
+                       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;
                        break;
                default:
                        error = EINVAL;

-                       goto exit;
+                       goto out;

                }
                break;
                }
                break;

+       

        case IOPOL_CMD_GET:
        case IOPOL_CMD_GET:

-               switch (*policy) {
-               case IOPOL_DEFAULT:
-               case IOPOL_NORMAL:
-               case IOPOL_THROTTLE:
-               case IOPOL_PASSIVE:
-                       iop_param.iop_policy = *policy;
-                       break;
-               default: // in-kernel 
-                       // this should never happen
-                       printf("%s: unknown I/O policy %d\n", __func__, *policy);
-                       // restore to default value
-                       *policy = IOPOL_DEFAULT;
-                       iop_param.iop_policy = *policy;
-               }
-               
+               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));
                error = copyout((caddr_t)&iop_param, uap->arg, sizeof(iop_param));

+

                break;
        default:
                error = EINVAL; // unknown command
                break;
        }
 
                break;
        default:
                error = EINVAL; // unknown command
                break;
        }
 

-  exit:
+out:

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


@@ -1242,20 +1253,63 @@ 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) {
-
-       int     policy;
-       struct uthread  *ut;
+thread_is_io_throttled(void) 
+{
+       return(proc_get_task_selfdiskacc() == IOPOL_THROTTLE);
+}

 
 

-       policy = current_proc()->p_iopol_disk;
+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);
+       }
+}

 
 

-       ut = get_bsdthread_info(current_thread());
+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);
+       }

 
 

-       if (ut->uu_iopol_disk != IOPOL_DEFAULT)
-               policy = ut->uu_iopol_disk;
+}

 
 

-       if (policy == IOPOL_THROTTLE)
-               return TRUE;
+void
+proc_set_task_networkbg(void * bsdinfo, int setbg)
+{
+       if (setbg != 0)
+               proc_apply_task_networkbg(bsdinfo);
+       else
+               proc_restore_task_networkbg(bsdinfo);
+}

 
 

-       return FALSE;
+void
+proc_apply_task_networkbg_internal(proc_t p, thread_t thread)
+{
+       if (p != PROC_NULL) {
+               do_background_socket(p, thread, PRIO_DARWIN_BG);
+       }
+}
+void
+proc_restore_task_networkbg_internal(proc_t p, thread_t thread)
+{
+       if (p != PROC_NULL) {
+               do_background_socket(p, thread, PRIO_DARWIN_BG);
+       }

 }
 }

+