/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @Apple_LICENSE_HEADER_START@
*
* The contents of this file constitute Original Code as defined in and
* are subject to the Apple Public Source License Version 1.1 (the
#include <machine/spl.h>
-#define HZ 100
-#include <mach/clock_types.h>
-#include <mach/mach_types.h>
-#include <machine/machine_routines.h>
-
-#include <sys/kdebug.h>
#include <sys/errno.h>
#include <sys/param.h>
-#include <sys/proc.h>
+#include <sys/proc_internal.h>
#include <sys/vm.h>
#include <sys/sysctl.h>
+#include <sys/kdebug.h>
+#include <sys/sysproto.h>
+
+#define HZ 100
+#include <mach/clock_types.h>
+#include <mach/mach_types.h>
+#include <mach/mach_time.h>
+#include <machine/machine_routines.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <vm/vm_kern.h>
#include <sys/lock.h>
+/* trace enable status */
+unsigned int kdebug_enable = 0;
+
+/* track timestamps for security server's entropy needs */
+uint64_t * kd_entropy_buffer = 0;
+unsigned int kd_entropy_bufsize = 0;
+unsigned int kd_entropy_count = 0;
+unsigned int kd_entropy_indx = 0;
+unsigned int kd_entropy_buftomem = 0;
+
+
+#define SLOW_NOLOG 0x01
+#define SLOW_CHECKS 0x02
+#define SLOW_ENTROPY 0x04
+
+unsigned int kdebug_slowcheck=SLOW_NOLOG;
+
/* kd_buf kd_buffer[kd_bufsize/sizeof(kd_buf)]; */
kd_buf * kd_bufptr;
unsigned int kd_buftomem=0;
unsigned int nkdbufs = 8192;
unsigned int kd_bufsize = 0;
unsigned int kdebug_flags = 0;
-unsigned int kdebug_enable=0;
-unsigned int kdebug_nolog=1;
unsigned int kdlog_beg=0;
unsigned int kdlog_end=0;
unsigned int kdlog_value1=0;
unsigned int kdlog_value4=0;
unsigned long long kd_prev_timebase = 0LL;
-decl_simple_lock_data(,kd_trace_lock);
+
+static lck_mtx_t * kd_trace_mtx;
+static lck_grp_t * kd_trace_mtx_grp;
+static lck_attr_t * kd_trace_mtx_attr;
+static lck_grp_attr_t *kd_trace_mtx_grp_attr;
+
+static lck_spin_t * kd_trace_lock;
+static lck_grp_t * kd_trace_lock_grp;
+static lck_attr_t * kd_trace_lock_attr;
+static lck_grp_attr_t *kd_trace_lock_grp_attr;
kd_threadmap *kd_mapptr = 0;
unsigned int kd_mapsize = 0;
#define DBG_FUNC_MASK 0xfffffffc
-#ifdef ppc
-extern natural_t rtclock_decrementer_min;
-#endif /* ppc */
-
-struct kdebug_args {
- int code;
- int arg1;
- int arg2;
- int arg3;
- int arg4;
- int arg5;
+/* task to string structure */
+struct tts
+{
+ task_t *task; /* from procs task */
+ pid_t pid; /* from procs p_pid */
+ char task_comm[20]; /* from procs p_comm */
};
+typedef struct tts tts_t;
+
struct krt
{
kd_threadmap *map; /* pointer to the map buffer */
int count;
int maxcount;
- struct proc *p;
+ struct tts *atts;
};
typedef struct krt krt_t;
+/* This is for the CHUD toolkit call */
+typedef void (*kd_chudhook_fn) (unsigned int debugid, unsigned int arg1,
+ unsigned int arg2, unsigned int arg3,
+ unsigned int arg4, unsigned int arg5);
+
+kd_chudhook_fn kdebug_chudhook = 0; /* pointer to CHUD toolkit function */
+
+
/* Support syscall SYS_kdebug_trace */
kdebug_trace(p, uap, retval)
struct proc *p;
- struct kdebug_args *uap;
+ struct kdebug_trace_args *uap;
register_t *retval;
{
- if (kdebug_nolog)
- return(EINVAL);
+ if ( (kdebug_enable == 0) )
+ return(EINVAL);
- kernel_debug(uap->code, uap->arg1, uap->arg2, uap->arg3, uap->arg4, 0);
- return(0);
+ kernel_debug(uap->code, uap->arg1, uap->arg2, uap->arg3, uap->arg4, 0);
+ return(0);
}
struct proc *curproc;
int s;
unsigned long long now;
- mach_timespec_t *tsp;
+
+ if (kdebug_enable & KDEBUG_ENABLE_CHUD) {
+ if (kdebug_chudhook)
+ kdebug_chudhook(debugid, arg1, arg2, arg3, arg4, arg5);
+
+ if ( !(kdebug_enable & (KDEBUG_ENABLE_ENTROPY | KDEBUG_ENABLE_TRACE)))
+ return;
+ }
s = ml_set_interrupts_enabled(FALSE);
+ lck_spin_lock(kd_trace_lock);
+
+ if (kdebug_slowcheck == 0)
+ goto record_trace;
+
+ if (kdebug_enable & KDEBUG_ENABLE_ENTROPY)
+ {
+ if (kd_entropy_indx < kd_entropy_count)
+ {
+ kd_entropy_buffer [ kd_entropy_indx] = mach_absolute_time();
+ kd_entropy_indx++;
+ }
+
+ if (kd_entropy_indx == kd_entropy_count)
+ {
+ /* Disable entropy collection */
+ kdebug_enable &= ~KDEBUG_ENABLE_ENTROPY;
+ kdebug_slowcheck &= ~SLOW_ENTROPY;
+ }
+ }
- if (kdebug_nolog)
+ if ( (kdebug_slowcheck & SLOW_NOLOG) )
{
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
-
- simple_lock(&kd_trace_lock);
+
if (kdebug_flags & KDBG_PIDCHECK)
{
/* If kdebug flag is not set for current proc, return */
if ((curproc && !(curproc->p_flag & P_KDEBUG)) &&
((debugid&0xffff0000) != (MACHDBG_CODE(DBG_MACH_SCHED, 0) | DBG_FUNC_NONE)))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
if ((curproc && (curproc->p_flag & P_KDEBUG)) &&
((debugid&0xffff0000) != (MACHDBG_CODE(DBG_MACH_SCHED, 0) | DBG_FUNC_NONE)))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
if (kdebug_flags & KDBG_RANGECHECK)
{
- if ((debugid < kdlog_beg) || (debugid > kdlog_end)
+ if ((debugid < kdlog_beg) || (debugid >= kdlog_end)
&& (debugid >> 24 != DBG_TRACE))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
(debugid & DBG_FUNC_MASK) != kdlog_value4 &&
(debugid >> 24 != DBG_TRACE))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
}
+
+record_trace:
kd = kd_bufptr;
kd->debugid = debugid;
kd->arg1 = arg1;
kd->arg3 = arg3;
kd->arg4 = arg4;
kd->arg5 = (int)current_thread();
- if (cpu_number())
- kd->arg5 |= KDBG_CPU_MASK;
- ml_get_timebase((unsigned long long *)&kd->timestamp);
+ now = mach_absolute_time() & KDBG_TIMESTAMP_MASK;
/* Watch for out of order timestamps */
- now = (((unsigned long long)kd->timestamp.tv_sec) << 32) |
- (unsigned long long)((unsigned int)(kd->timestamp.tv_nsec));
if (now < kd_prev_timebase)
{
- /* timestamps are out of order -- adjust */
- kd_prev_timebase++;
- tsp = (mach_timespec_t *)&kd_prev_timebase;
- kd->timestamp.tv_sec = tsp->tv_sec;
- kd->timestamp.tv_nsec = tsp->tv_nsec;
+ now = ++kd_prev_timebase & KDBG_TIMESTAMP_MASK;
}
else
{
/* Then just store the previous timestamp */
kd_prev_timebase = now;
}
-
+ kd->timestamp = now | (((uint64_t)cpu_number()) << KDBG_CPU_SHIFT);
kd_bufptr++;
kd_bufptr = kd_buffer;
if (kd_bufptr == kd_readlast) {
if (kdebug_flags & KDBG_NOWRAP)
- kdebug_nolog = 1;
+ kdebug_slowcheck |= SLOW_NOLOG;
kdebug_flags |= KDBG_WRAPPED;
}
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
}
struct proc *curproc;
int s;
unsigned long long now;
- mach_timespec_t *tsp;
+ if (kdebug_enable & KDEBUG_ENABLE_CHUD) {
+ if (kdebug_chudhook)
+ (void)kdebug_chudhook(debugid, arg1, arg2, arg3, arg4, arg5);
+
+ if ( !(kdebug_enable & (KDEBUG_ENABLE_ENTROPY | KDEBUG_ENABLE_TRACE)))
+ return;
+ }
s = ml_set_interrupts_enabled(FALSE);
+ lck_spin_lock(kd_trace_lock);
+
+ if (kdebug_slowcheck == 0)
+ goto record_trace1;
- if (kdebug_nolog)
+ if ( (kdebug_slowcheck & SLOW_NOLOG) )
{
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
- simple_lock(&kd_trace_lock);
if (kdebug_flags & KDBG_PIDCHECK)
{
/* If kdebug flag is not set for current proc, return */
if ((curproc && !(curproc->p_flag & P_KDEBUG)) &&
((debugid&0xffff0000) != (MACHDBG_CODE(DBG_MACH_SCHED, 0) | DBG_FUNC_NONE)))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
if ((curproc && (curproc->p_flag & P_KDEBUG)) &&
((debugid&0xffff0000) != (MACHDBG_CODE(DBG_MACH_SCHED, 0) | DBG_FUNC_NONE)))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
if (kdebug_flags & KDBG_RANGECHECK)
{
- if ((debugid < kdlog_beg) || (debugid > kdlog_end)
+ if ((debugid < kdlog_beg) || (debugid >= kdlog_end)
&& (debugid >> 24 != DBG_TRACE))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
(debugid & DBG_FUNC_MASK) != kdlog_value4 &&
(debugid >> 24 != DBG_TRACE))
{
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
return;
}
}
+record_trace1:
kd = kd_bufptr;
kd->debugid = debugid;
kd->arg1 = arg1;
kd->arg3 = arg3;
kd->arg4 = arg4;
kd->arg5 = arg5;
- ml_get_timebase((unsigned long long *)&kd->timestamp);
+
+ now = mach_absolute_time() & KDBG_TIMESTAMP_MASK;
/* Watch for out of order timestamps */
- now = (((unsigned long long)kd->timestamp.tv_sec) << 32) |
- (unsigned long long)((unsigned int)(kd->timestamp.tv_nsec));
if (now < kd_prev_timebase)
{
- /* timestamps are out of order -- adjust */
- kd_prev_timebase++;
- tsp = (mach_timespec_t *)&kd_prev_timebase;
- kd->timestamp.tv_sec = tsp->tv_sec;
- kd->timestamp.tv_nsec = tsp->tv_nsec;
+ now = ++kd_prev_timebase & KDBG_TIMESTAMP_MASK;
}
else
{
/* Then just store the previous timestamp */
kd_prev_timebase = now;
}
+ kd->timestamp = now | (((uint64_t)cpu_number()) << KDBG_CPU_SHIFT);
kd_bufptr++;
kd_bufptr = kd_buffer;
if (kd_bufptr == kd_readlast) {
if (kdebug_flags & KDBG_NOWRAP)
- kdebug_nolog = 1;
+ kdebug_slowcheck |= SLOW_NOLOG;
kdebug_flags |= KDBG_WRAPPED;
}
- simple_unlock(&kd_trace_lock);
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
}
+static void
+kdbg_lock_init()
+{
+
+ if (kdebug_flags & KDBG_LOCKINIT)
+ return;
+ /*
+ * allocate lock group attribute and group
+ */
+ kd_trace_lock_grp_attr = lck_grp_attr_alloc_init();
+ //lck_grp_attr_setstat(kd_trace_lock_grp_attr);
+ kd_trace_lock_grp = lck_grp_alloc_init("kdebug", kd_trace_lock_grp_attr);
+
+ kd_trace_mtx_grp_attr = lck_grp_attr_alloc_init();
+ //lck_grp_attr_setstat(kd_trace_mtx_grp_attr);
+ kd_trace_mtx_grp = lck_grp_alloc_init("kdebug", kd_trace_mtx_grp_attr);
+
+ /*
+ * allocate the lock attribute
+ */
+ kd_trace_lock_attr = lck_attr_alloc_init();
+ //lck_attr_setdebug(kd_trace_lock_attr);
+
+ kd_trace_mtx_attr = lck_attr_alloc_init();
+ //lck_attr_setdebug(kd_trace_mtx_attr);
+
+
+ /*
+ * allocate and initialize spin lock and mutex
+ */
+ kd_trace_lock = lck_spin_alloc_init(kd_trace_lock_grp, kd_trace_lock_attr);
+ kd_trace_mtx = lck_mtx_alloc_init(kd_trace_mtx_grp, kd_trace_mtx_attr);
+
+ kdebug_flags |= KDBG_LOCKINIT;
+}
+
+
+int
kdbg_bootstrap()
{
+
kd_bufsize = nkdbufs * sizeof(kd_buf);
+
if (kmem_alloc(kernel_map, &kd_buftomem,
(vm_size_t)kd_bufsize) == KERN_SUCCESS)
- kd_buffer = (kd_buf *) kd_buftomem;
- else kd_buffer= (kd_buf *) 0;
+ kd_buffer = (kd_buf *) kd_buftomem;
+ else
+ kd_buffer= (kd_buf *) 0;
kdebug_flags &= ~KDBG_WRAPPED;
+
if (kd_buffer) {
- simple_lock_init(&kd_trace_lock);
kdebug_flags |= (KDBG_INIT | KDBG_BUFINIT);
kd_bufptr = kd_buffer;
kd_buflast = &kd_bufptr[nkdbufs];
kdbg_reinit()
{
- int x;
+ int s;
int ret=0;
- kdebug_enable = 0;
- kdebug_nolog = 1;
+ /*
+ * Disable trace collecting
+ * First make sure we're not in
+ * the middle of cutting a trace
+ */
+ s = ml_set_interrupts_enabled(FALSE);
+ lck_spin_lock(kd_trace_lock);
+
+ kdebug_enable &= ~KDEBUG_ENABLE_TRACE;
+ kdebug_slowcheck |= SLOW_NOLOG;
+
+ lck_spin_unlock(kd_trace_lock);
+ ml_set_interrupts_enabled(s);
if ((kdebug_flags & KDBG_INIT) && (kdebug_flags & KDBG_BUFINIT) && kd_bufsize && kd_buffer)
- kmem_free(kernel_map, (char *)kd_buffer, kd_bufsize);
+ kmem_free(kernel_map, (vm_offset_t)kd_buffer, kd_bufsize);
if ((kdebug_flags & KDBG_MAPINIT) && kd_mapsize && kd_mapptr)
{
- kmem_free(kernel_map, (char *)kd_mapptr, kd_mapsize);
+ kmem_free(kernel_map, (vm_offset_t)kd_mapptr, kd_mapsize);
kdebug_flags &= ~KDBG_MAPINIT;
kd_mapsize = 0;
kd_mapptr = (kd_threadmap *) 0;
return(ret);
}
+void kdbg_trace_data(struct proc *proc, long *arg_pid)
+{
+ if (!proc)
+ *arg_pid = 0;
+ else
+ *arg_pid = proc->p_pid;
+
+ return;
+}
+
+
void kdbg_trace_string(struct proc *proc, long *arg1, long *arg2, long *arg3, long *arg4)
{
int i;
*arg4=dbg_parms[3];
}
-kdbg_resolve_map(thread_act_t th_act, krt_t *t)
+static void
+kdbg_resolve_map(thread_t th_act, krt_t *t)
{
kd_threadmap *mapptr;
if(t->count < t->maxcount)
{
mapptr=&t->map[t->count];
- mapptr->thread = (unsigned int)getshuttle_thread(th_act);
- mapptr->valid = 1;
- (void) strncpy (mapptr->command, t->p->p_comm,
- sizeof(t->p->p_comm)-1);
- mapptr->command[sizeof(t->p->p_comm)-1] = '\0';
+ mapptr->thread = (unsigned int)th_act;
+ (void) strncpy (mapptr->command, t->atts->task_comm,
+ sizeof(t->atts->task_comm)-1);
+ mapptr->command[sizeof(t->atts->task_comm)-1] = '\0';
+
+ /*
+ Some kernel threads have no associated pid.
+ We still need to mark the entry as valid.
+ */
+ if (t->atts->pid)
+ mapptr->valid = t->atts->pid;
+ else
+ mapptr->valid = 1;
+
t->count++;
}
}
{
struct proc *p;
struct krt akrt;
+ int tts_count; /* number of task-to-string structures */
+ struct tts *tts_mapptr;
+ unsigned int tts_mapsize = 0;
+ unsigned int tts_maptomem=0;
+ int i;
+
if (kdebug_flags & KDBG_MAPINIT)
return;
- /* Calculate size of thread map buffer */
- for (p = allproc.lh_first, kd_mapcount=0; p;
+ /* Calculate the sizes of map buffers*/
+ for (p = allproc.lh_first, kd_mapcount=0, tts_count=0; p;
p = p->p_list.le_next)
{
kd_mapcount += get_task_numacts((task_t)p->task);
+ tts_count++;
}
+ /*
+ * The proc count could change during buffer allocation,
+ * so introduce a small fudge factor to bump up the
+ * buffer sizes. This gives new tasks some chance of
+ * making into the tables. Bump up by 10%.
+ */
+ kd_mapcount += kd_mapcount/10;
+ tts_count += tts_count/10;
+
kd_mapsize = kd_mapcount * sizeof(kd_threadmap);
if((kmem_alloc(kernel_map, & kd_maptomem,
(vm_size_t)kd_mapsize) == KERN_SUCCESS))
+ {
kd_mapptr = (kd_threadmap *) kd_maptomem;
+ bzero(kd_mapptr, kd_mapsize);
+ }
else
kd_mapptr = (kd_threadmap *) 0;
- if (kd_mapptr)
+ tts_mapsize = tts_count * sizeof(struct tts);
+ if((kmem_alloc(kernel_map, & tts_maptomem,
+ (vm_size_t)tts_mapsize) == KERN_SUCCESS))
+ {
+ tts_mapptr = (struct tts *) tts_maptomem;
+ bzero(tts_mapptr, tts_mapsize);
+ }
+ else
+ tts_mapptr = (struct tts *) 0;
+
+
+ /*
+ * We need to save the procs command string
+ * and take a reference for each task associated
+ * with a valid process
+ */
+
+ if (tts_mapptr) {
+ for (p = allproc.lh_first, i=0; p && i < tts_count;
+ p = p->p_list.le_next) {
+ if (p->p_flag & P_WEXIT)
+ continue;
+
+ if (p->task) {
+ task_reference(p->task);
+ tts_mapptr[i].task = p->task;
+ tts_mapptr[i].pid = p->p_pid;
+ (void)strncpy(&tts_mapptr[i].task_comm, p->p_comm, sizeof(tts_mapptr[i].task_comm) - 1);
+ i++;
+ }
+ }
+ tts_count = i;
+ }
+
+
+ if (kd_mapptr && tts_mapptr)
{
kdebug_flags |= KDBG_MAPINIT;
/* Initialize thread map data */
akrt.count = 0;
akrt.maxcount = kd_mapcount;
- for (p = allproc.lh_first; p; p = p->p_list.le_next)
+ for (i=0; i < tts_count; i++)
{
- akrt.p = p;
- task_act_iterate_wth_args((task_t)p->task, kdbg_resolve_map, &akrt);
- }
+ akrt.atts = &tts_mapptr[i];
+ task_act_iterate_wth_args(tts_mapptr[i].task, kdbg_resolve_map, &akrt);
+ task_deallocate((task_t) tts_mapptr[i].task);
+ }
+ kmem_free(kernel_map, (vm_offset_t)tts_mapptr, tts_mapsize);
}
}
-kdbg_clear()
+static void
+kdbg_clear(void)
{
-int x;
+ int s;
+
+ /*
+ * Clean up the trace buffer
+ * First make sure we're not in
+ * the middle of cutting a trace
+ */
+ s = ml_set_interrupts_enabled(FALSE);
+ lck_spin_lock(kd_trace_lock);
+
+ kdebug_enable &= ~KDEBUG_ENABLE_TRACE;
+ kdebug_slowcheck = SLOW_NOLOG;
+
+ if (kdebug_enable & KDEBUG_ENABLE_ENTROPY)
+ kdebug_slowcheck |= SLOW_ENTROPY;
+
+ lck_spin_unlock(kd_trace_lock);
+ ml_set_interrupts_enabled(s);
- /* Clean up the trace buffer */
global_state_pid = -1;
- kdebug_enable = 0;
- kdebug_nolog = 1;
kdebug_flags &= ~KDBG_BUFINIT;
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
kdebug_flags &= ~(KDBG_NOWRAP | KDBG_RANGECHECK | KDBG_VALCHECK);
kdebug_flags &= ~(KDBG_PIDCHECK | KDBG_PIDEXCLUDE);
- kmem_free(kernel_map, (char *)kd_buffer, kd_bufsize);
+ kmem_free(kernel_map, (vm_offset_t)kd_buffer, kd_bufsize);
kd_buffer = (kd_buf *)0;
kd_bufsize = 0;
kd_prev_timebase = 0LL;
/* Clean up the thread map buffer */
kdebug_flags &= ~KDBG_MAPINIT;
- kmem_free(kernel_map, (char *)kd_mapptr, kd_mapsize);
+ kmem_free(kernel_map, (vm_offset_t)kd_mapptr, kd_mapsize);
kd_mapptr = (kd_threadmap *) 0;
kd_mapsize = 0;
kd_mapcount = 0;
{
kdebug_flags |= KDBG_PIDCHECK;
kdebug_flags &= ~KDBG_PIDEXCLUDE;
+ kdebug_slowcheck |= SLOW_CHECKS;
+
p->p_flag |= P_KDEBUG;
}
else /* turn off pid check for this pid value */
{
kdebug_flags |= KDBG_PIDEXCLUDE;
kdebug_flags &= ~KDBG_PIDCHECK;
+ kdebug_slowcheck |= SLOW_CHECKS;
+
p->p_flag |= P_KDEBUG;
}
else /* turn off pid exclusion for this pid value */
return(ret);
}
-/* This is for setting a minimum decrementer value */
+/* This is for setting a maximum decrementer value */
kdbg_setrtcdec(kd_regtype *kdr)
{
int ret=0;
decval = (natural_t)kdr->value1;
if (decval && decval < KDBG_MINRTCDEC)
- ret = EINVAL;
+ ret = EINVAL;
#ifdef ppc
- else
- rtclock_decrementer_min = decval;
+ else {
+
+ extern uint32_t maxDec;
+
+ maxDec = decval ? decval : 0x7FFFFFFF; /* Set or reset the max decrementer */
+ }
#else
- else
- ret = EOPNOTSUPP;
+ else
+ ret = ENOTSUP;
#endif /* ppc */
return(ret);
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
kdebug_flags &= ~KDBG_VALCHECK; /* Turn off specific value check */
kdebug_flags |= (KDBG_RANGECHECK | KDBG_CLASSTYPE);
+ kdebug_slowcheck |= SLOW_CHECKS;
break;
case KDBG_SUBCLSTYPE :
val_1 = (kdr->value1 & 0xff);
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
kdebug_flags &= ~KDBG_VALCHECK; /* Turn off specific value check */
kdebug_flags |= (KDBG_RANGECHECK | KDBG_SUBCLSTYPE);
+ kdebug_slowcheck |= SLOW_CHECKS;
break;
case KDBG_RANGETYPE :
kdlog_beg = (kdr->value1);
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
kdebug_flags &= ~KDBG_VALCHECK; /* Turn off specific value check */
kdebug_flags |= (KDBG_RANGECHECK | KDBG_RANGETYPE);
+ kdebug_slowcheck |= SLOW_CHECKS;
break;
case KDBG_VALCHECK:
kdlog_value1 = (kdr->value1);
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
kdebug_flags &= ~KDBG_RANGECHECK; /* Turn off range check */
kdebug_flags |= KDBG_VALCHECK; /* Turn on specific value check */
+ kdebug_slowcheck |= SLOW_CHECKS;
break;
case KDBG_TYPENONE :
kdebug_flags &= (unsigned int)~KDBG_CKTYPES;
+
+ if ( (kdebug_flags & (KDBG_RANGECHECK | KDBG_VALCHECK | KDBG_PIDCHECK | KDBG_PIDEXCLUDE)) )
+ kdebug_slowcheck |= SLOW_CHECKS;
+ else
+ kdebug_slowcheck &= ~SLOW_CHECKS;
+
kdlog_beg = 0;
kdlog_end = 0;
break;
}
-
-kdbg_readmap(kd_threadmap *buffer, size_t *number)
+int
+kdbg_readmap(user_addr_t buffer, size_t *number)
{
int avail = *number;
int ret = 0;
if ((kdebug_flags & KDBG_MAPINIT) && kd_mapsize && kd_mapptr)
{
- kmem_free(kernel_map, (char *)kd_mapptr, kd_mapsize);
+ kmem_free(kernel_map, (vm_offset_t)kd_mapptr, kd_mapsize);
kdebug_flags &= ~KDBG_MAPINIT;
kd_mapsize = 0;
kd_mapptr = (kd_threadmap *) 0;
return(ret);
}
+int
+kdbg_getentropy (user_addr_t buffer, size_t *number, int ms_timeout)
+{
+ int avail = *number;
+ int ret = 0;
+ int count = 0; /* The number of timestamp entries that will fill buffer */
+
+ if (kd_entropy_buffer)
+ return(EBUSY);
+
+ kd_entropy_count = avail/sizeof(mach_timespec_t);
+ kd_entropy_bufsize = kd_entropy_count * sizeof(mach_timespec_t);
+ kd_entropy_indx = 0;
+
+ /* Enforce maximum entropy entries here if needed */
+
+ /* allocate entropy buffer */
+ if (kmem_alloc(kernel_map, &kd_entropy_buftomem,
+ (vm_size_t)kd_entropy_bufsize) == KERN_SUCCESS)
+ {
+ kd_entropy_buffer = (uint64_t *) kd_entropy_buftomem;
+ }
+ else
+ {
+ kd_entropy_buffer = (uint64_t *) 0;
+ kd_entropy_count = 0;
+ kd_entropy_indx = 0;
+ return (EINVAL);
+ }
+
+ if (ms_timeout < 10)
+ ms_timeout = 10;
+
+ /* Enable entropy sampling */
+ kdebug_enable |= KDEBUG_ENABLE_ENTROPY;
+ kdebug_slowcheck |= SLOW_ENTROPY;
+
+ ret = tsleep (kdbg_getentropy, PRIBIO | PCATCH, "kd_entropy", (ms_timeout/(1000/HZ)));
+
+ /* Disable entropy sampling */
+ kdebug_enable &= ~KDEBUG_ENABLE_ENTROPY;
+ kdebug_slowcheck &= ~SLOW_ENTROPY;
-kdbg_control(name, namelen, where, sizep)
-int *name;
-u_int namelen;
-char *where;
-size_t *sizep;
+ *number = 0;
+ ret = 0;
+
+ if (kd_entropy_indx > 0)
+ {
+ /* copyout the buffer */
+ if (copyout(kd_entropy_buffer, buffer, kd_entropy_indx * sizeof(mach_timespec_t)))
+ ret = EINVAL;
+ else
+ *number = kd_entropy_indx;
+ }
+
+ /* Always cleanup */
+ kd_entropy_count = 0;
+ kd_entropy_indx = 0;
+ kd_entropy_buftomem = 0;
+ kmem_free(kernel_map, (vm_offset_t)kd_entropy_buffer, kd_entropy_bufsize);
+ kd_entropy_buffer = (uint64_t *) 0;
+ return(ret);
+}
+
+
+/*
+ * This function is provided for the CHUD toolkit only.
+ * int val:
+ * zero disables kdebug_chudhook function call
+ * non-zero enables kdebug_chudhook function call
+ * char *fn:
+ * address of the enabled kdebug_chudhook function
+*/
+
+void kdbg_control_chud(int val, void *fn)
{
-int ret=0;
-int size=*sizep;
-int max_entries;
-unsigned int value = name[1];
-kd_regtype kd_Reg;
-kbufinfo_t kd_bufinfo;
-
-pid_t curpid;
-struct proc *p, *curproc;
-
- if(curproc = current_proc())
- curpid = curproc->p_pid;
- else
- return (ESRCH);
+ if (val) {
+ /* enable chudhook */
+ kdebug_chudhook = fn;
+ kdebug_enable |= KDEBUG_ENABLE_CHUD;
+ }
+ else {
+ /* disable chudhook */
+ kdebug_enable &= ~KDEBUG_ENABLE_CHUD;
+ kdebug_chudhook = 0;
+ }
+}
+
+kdbg_control(int *name, u_int namelen, user_addr_t where, size_t *sizep)
+{
+ int ret=0;
+ int size=*sizep;
+ int max_entries;
+ unsigned int value = name[1];
+ kd_regtype kd_Reg;
+ kbufinfo_t kd_bufinfo;
+ pid_t curpid;
+ struct proc *p, *curproc;
+
+
+ kdbg_lock_init();
+ lck_mtx_lock(kd_trace_mtx);
+
+ if (name[0] == KERN_KDGETBUF) {
+ /*
+ * Does not alter the global_state_pid
+ * This is a passive request.
+ */
+ if (size < sizeof(kd_bufinfo.nkdbufs)) {
+ /*
+ * There is not enough room to return even
+ * the first element of the info structure.
+ */
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return(EINVAL);
+ }
+ kd_bufinfo.nkdbufs = nkdbufs;
+ kd_bufinfo.nkdthreads = kd_mapsize / sizeof(kd_threadmap);
+
+ if ( (kdebug_slowcheck & SLOW_NOLOG) )
+ kd_bufinfo.nolog = 1;
+ else
+ kd_bufinfo.nolog = 0;
+ kd_bufinfo.flags = kdebug_flags;
+ kd_bufinfo.bufid = global_state_pid;
+
+ if (size >= sizeof(kd_bufinfo)) {
+ /*
+ * Provide all the info we have
+ */
+ if (copyout (&kd_bufinfo, where, sizeof(kd_bufinfo))) {
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return(EINVAL);
+ }
+ }
+ else {
+ /*
+ * For backwards compatibility, only provide
+ * as much info as there is room for.
+ */
+ if (copyout (&kd_bufinfo, where, size)) {
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return(EINVAL);
+ }
+ }
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return(0);
+ } else if (name[0] == KERN_KDGETENTROPY) {
+ if (kd_entropy_buffer)
+ ret = EBUSY;
+ else
+ ret = kdbg_getentropy(where, sizep, value);
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return (ret);
+ }
+
+ if (curproc = current_proc())
+ curpid = curproc->p_pid;
+ else {
+ lck_mtx_unlock(kd_trace_mtx);
+
+ return (ESRCH);
+ }
if (global_state_pid == -1)
global_state_pid = curpid;
- else if (global_state_pid != curpid)
- {
- if((p = pfind(global_state_pid)) == NULL)
- {
- /* The global pid no longer exists */
- global_state_pid = curpid;
- }
- else
- {
- /* The global pid exists, deny this request */
+ else if (global_state_pid != curpid) {
+ if ((p = pfind(global_state_pid)) == NULL) {
+ /*
+ * The global pid no longer exists
+ */
+ global_state_pid = curpid;
+ } else {
+ /*
+ * The global pid exists, deny this request
+ */
+ lck_mtx_unlock(kd_trace_mtx);
+
return(EBUSY);
- }
- }
+ }
+ }
switch(name[0]) {
case KERN_KDEFLAGS:
ret=EINVAL;
break;
}
+ kdebug_enable |= KDEBUG_ENABLE_TRACE;
+ kdebug_slowcheck &= ~SLOW_NOLOG;
+ }
+ else
+ {
+ kdebug_enable &= ~KDEBUG_ENABLE_TRACE;
+ kdebug_slowcheck |= SLOW_NOLOG;
}
- kdebug_enable=(value)?1:0;
- kdebug_nolog = (value)?0:1;
- if (kdebug_enable)
- kdbg_mapinit();
+ kdbg_mapinit();
break;
case KERN_KDSETBUF:
- /* We allow a maximum buffer size of 25% of memory */
+ /* We allow a maximum buffer size of 25% of either ram or max mapped address, whichever is smaller */
/* 'value' is the desired number of trace entries */
- max_entries = (mem_size/4) / sizeof(kd_buf);
+ max_entries = (sane_size/4) / sizeof(kd_buf);
if (value <= max_entries)
nkdbufs = value;
else
nkdbufs = max_entries;
break;
- case KERN_KDGETBUF:
- if(size < sizeof(kbufinfo_t)) {
- ret=EINVAL;
- break;
- }
- kd_bufinfo.nkdbufs = nkdbufs;
- kd_bufinfo.nkdthreads = kd_mapsize / sizeof(kd_threadmap);
- kd_bufinfo.nolog = kdebug_nolog;
- kd_bufinfo.flags = kdebug_flags;
- if(copyout (&kd_bufinfo, where, sizeof(kbufinfo_t))) {
- ret=EINVAL;
- }
- break;
case KERN_KDSETUP:
ret=kdbg_reinit();
break;
ret = kdbg_setpidex(&kd_Reg);
break;
case KERN_KDTHRMAP:
- ret = kdbg_readmap((kd_threadmap *)where, sizep);
+ ret = kdbg_readmap(where, sizep);
break;
case KERN_KDSETRTCDEC:
if (size < sizeof(kd_regtype)) {
default:
ret= EINVAL;
}
+ lck_mtx_unlock(kd_trace_mtx);
+
return(ret);
}
-kdbg_read(kd_buf * buffer, size_t *number)
+kdbg_read(user_addr_t buffer, size_t *number)
{
int avail=*number;
int count=0;
kd_buf * my_kd_bufptr;
s = ml_set_interrupts_enabled(FALSE);
- simple_lock(&kd_trace_lock);
+ lck_spin_lock(kd_trace_lock);
+
my_kdebug_flags = kdebug_flags;
my_kd_bufptr = kd_bufptr;
- simple_unlock(&kd_trace_lock);
+
+ lck_spin_unlock(kd_trace_lock);
ml_set_interrupts_enabled(s);
count = avail/sizeof(kd_buf);
+
if (count) {
if ((my_kdebug_flags & KDBG_BUFINIT) && kd_bufsize && kd_buffer) {
if (count > nkdbufs)
count = nkdbufs;
- if (!(my_kdebug_flags & KDBG_WRAPPED) && (my_kd_bufptr > kd_readlast))
- {
- copycount = my_kd_bufptr-kd_readlast;
- if (copycount > count)
- copycount = count;
-
- if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf)))
- {
- *number = 0;
- return(EINVAL);
- }
- kd_readlast += copycount;
- *number = copycount;
- return(0);
- }
- else if (!(my_kdebug_flags & KDBG_WRAPPED) && (my_kd_bufptr == kd_readlast))
- {
- *number = 0;
- return(0);
- }
- else
- {
- if (my_kdebug_flags & KDBG_WRAPPED)
- {
- kd_readlast = my_kd_bufptr;
+
+ if (!(my_kdebug_flags & KDBG_WRAPPED)) {
+ if (my_kd_bufptr == kd_readlast) {
+ *number = 0;
+ return(0);
+ }
+ if (my_kd_bufptr > kd_readlast) {
+ copycount = my_kd_bufptr - kd_readlast;
+ if (copycount > count)
+ copycount = count;
+
+ if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf))) {
+ *number = 0;
+ return(EINVAL);
+ }
+ kd_readlast += copycount;
+ *number = copycount;
+ return(0);
+ }
+ }
+ if ( (my_kdebug_flags & KDBG_WRAPPED) ) {
+ /* Note that by setting kd_readlast equal to my_kd_bufptr,
+ * we now treat the kd_buffer read the same as if we weren't
+ * wrapped and my_kd_bufptr was less than kd_readlast.
+ */
+ kd_readlast = my_kd_bufptr;
kdebug_flags &= ~KDBG_WRAPPED;
- }
-
- /* Note that by setting kd_readlast equal to my_kd_bufptr,
- we now treat the kd_buffer read the same as if we weren't
- wrapped and my_kd_bufptr was less than kd_readlast.
- */
-
- /* first copyout from readlast to end of kd_buffer */
- copycount = kd_buflast - kd_readlast;
- if (copycount > count)
- copycount = count;
- if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf)))
- {
- *number = 0;
+ }
+ /*
+ * first copyout from readlast to end of kd_buffer
+ */
+ copycount = kd_buflast - kd_readlast;
+ if (copycount > count)
+ copycount = count;
+ if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf))) {
+ *number = 0;
return(EINVAL);
- }
- buffer += copycount;
- count -= copycount;
- totalcount = copycount;
- kd_readlast += copycount;
- if (kd_readlast == kd_buflast)
- kd_readlast = kd_buffer;
- if (count == 0)
- {
+ }
+ buffer += (copycount * sizeof(kd_buf));
+ count -= copycount;
+ totalcount = copycount;
+ kd_readlast += copycount;
+
+ if (kd_readlast == kd_buflast)
+ kd_readlast = kd_buffer;
+ if (count == 0) {
*number = totalcount;
return(0);
- }
-
- /* second copyout from top of kd_buffer to bufptr */
- copycount = my_kd_bufptr - kd_readlast;
- if (copycount > count)
- copycount = count;
- if (copycount == 0)
- {
+ }
+ /* second copyout from top of kd_buffer to bufptr */
+ copycount = my_kd_bufptr - kd_readlast;
+ if (copycount > count)
+ copycount = count;
+ if (copycount == 0) {
*number = totalcount;
return(0);
- }
- if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf)))
- {
+ }
+ if (copyout(kd_readlast, buffer, copycount * sizeof(kd_buf)))
return(EINVAL);
- }
- kd_readlast += copycount;
- totalcount += copycount;
- *number = totalcount;
- return(0);
- }
+
+ kd_readlast += copycount;
+ totalcount += copycount;
+ *number = totalcount;
+ return(0);
+
} /* end if KDBG_BUFINIT */
} /* end if count */
return (EINVAL);
}
+
+unsigned char *getProcName(struct proc *proc);
+unsigned char *getProcName(struct proc *proc) {
+
+ return (unsigned char *) &proc->p_comm; /* Return pointer to the proc name */
+
+}
projects / apple / xnu.git / blobdiff