xnu-4570.51.1.tar.gz

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

diff --git a/bsd/kern/kern_core.c b/bsd/kern/kern_core.c
index 9477378efef55ebf546573a516b513eafc58661d..73a9a454b8ffd7f2376a47c3149f9b37e7b4814f 100644 (file)
--- a/bsd/kern/kern_core.c
+++ b/bsd/kern/kern_core.c
@@ -32,10 +32,11 @@
  *     This file contains machine independent code for performing core dumps.
  *
  */
  *     This file contains machine independent code for performing core dumps.
  *
  */

+#if CONFIG_COREDUMP

 
 #include <mach/vm_param.h>
 #include <mach/thread_status.h>
 
 #include <mach/vm_param.h>
 #include <mach/thread_status.h>

-
+#include <sys/content_protection.h>

 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/signalvar.h>
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/signalvar.h>


@@ -65,6 +66,11 @@
 
 #include <security/audit/audit.h>
 
 
 #include <security/audit/audit.h>
 

+#if CONFIG_CSR
+#include <sys/codesign.h>
+#include <sys/csr.h>
+#endif
+

 typedef struct {
        int     flavor;                 /* the number for this flavor */
        mach_msg_type_number_t  count;  /* count of ints in this flavor */
 typedef struct {
        int     flavor;                 /* the number for this flavor */
        mach_msg_type_number_t  count;  /* count of ints in this flavor */


@@ -77,6 +83,21 @@ mythread_state_flavor_t thread_flavor_array [] = {
                {x86_EXCEPTION_STATE, x86_EXCEPTION_STATE_COUNT},
                };
 int mynum_flavors=3;
                {x86_EXCEPTION_STATE, x86_EXCEPTION_STATE_COUNT},
                };
 int mynum_flavors=3;

+#elif defined (__arm__)
+mythread_state_flavor_t thread_flavor_array[]={
+               {ARM_THREAD_STATE , ARM_THREAD_STATE_COUNT},
+               {ARM_VFP_STATE, ARM_VFP_STATE_COUNT}, 
+               {ARM_EXCEPTION_STATE, ARM_EXCEPTION_STATE_COUNT}
+               };
+int mynum_flavors=3;
+
+#elif defined (__arm64__)
+mythread_state_flavor_t thread_flavor_array[]={
+               {ARM_THREAD_STATE64 , ARM_THREAD_STATE64_COUNT},
+               /* ARM64_TODO: VFP */
+               {ARM_EXCEPTION_STATE64, ARM_EXCEPTION_STATE64_COUNT}
+               };
+int mynum_flavors=2;

 #else
 #error architecture not supported
 #endif
 #else
 #error architecture not supported
 #endif


@@ -90,19 +111,13 @@ typedef struct {
        int flavor_count;
 } tir_t;
 
        int flavor_count;
 } tir_t;
 

-/* XXX should be static */
-void collectth_state(thread_t th_act, void *tirp);
-

 extern int freespace_mb(vnode_t vp);
 
 /* XXX not in a Mach header anywhere */
 extern int freespace_mb(vnode_t vp);
 
 /* XXX not in a Mach header anywhere */

-kern_return_t thread_getstatus(register thread_t act, int flavor,
+kern_return_t thread_getstatus(thread_t act, int flavor,

        thread_state_t tstate, mach_msg_type_number_t *count);
 void task_act_iterate_wth_args(task_t, void(*)(thread_t, void *), void *);
 
        thread_state_t tstate, mach_msg_type_number_t *count);
 void task_act_iterate_wth_args(task_t, void(*)(thread_t, void *), void *);
 

-static cpu_type_t process_cpu_type(proc_t proc);
-static cpu_type_t process_cpu_subtype(proc_t proc);
-

 #ifdef SECURE_KERNEL
 __XNU_PRIVATE_EXTERN int do_coredump = 0;      /* default: don't dump cores */
 #else
 #ifdef SECURE_KERNEL
 __XNU_PRIVATE_EXTERN int do_coredump = 0;      /* default: don't dump cores */
 #else


@@ -124,6 +139,12 @@ process_cpu_type(proc_t core_proc)
        } else {
                what_we_think = CPU_TYPE_I386;
        }
        } else {
                what_we_think = CPU_TYPE_I386;
        }

+#elif defined (__arm__) || defined(__arm64__)
+       if (IS_64BIT_PROCESS(core_proc)) {
+               what_we_think = CPU_TYPE_ARM64;
+       } else {
+               what_we_think = CPU_TYPE_ARM;
+       }

 #endif
        return what_we_think;
 }
 #endif
        return what_we_think;
 }


@@ -138,11 +159,17 @@ process_cpu_subtype(proc_t core_proc)
        } else {
                what_we_think = CPU_SUBTYPE_I386_ALL;
        }
        } else {
                what_we_think = CPU_SUBTYPE_I386_ALL;
        }

+#elif defined (__arm__) || defined(__arm64__)
+    if (IS_64BIT_PROCESS(core_proc)) {
+               what_we_think = CPU_SUBTYPE_ARM64_ALL;
+       } else {
+               what_we_think = CPU_SUBTYPE_ARM_ALL;
+       }

 #endif
        return what_we_think;
 }
 
 #endif
        return what_we_think;
 }
 

-void
+static void

 collectth_state(thread_t th_act, void *tirp)
 {
        vm_offset_t     header;
 collectth_state(thread_t th_act, void *tirp)
 {
        vm_offset_t     header;


@@ -181,7 +208,6 @@ collectth_state(thread_t th_act, void *tirp)
                t->hoffset = hoffset;
 }
 
                t->hoffset = hoffset;
 }
 

-

 /*
  * coredump
  *
 /*
  * coredump
  *


@@ -256,6 +282,20 @@ coredump(proc_t core_proc, uint32_t reserve_mb, int coredump_flags)
                return (EFAULT);
        }
 
                return (EFAULT);
        }
 

+#if CONFIG_CSR
+       /* If the process is restricted, CSR isn't configured to allow
+        * restricted processes to be debugged, and CSR isn't configured in
+        * AppleInternal mode, then don't dump core. */
+       if (cs_restricted(core_proc) &&
+           csr_check(CSR_ALLOW_TASK_FOR_PID) &&
+           csr_check(CSR_ALLOW_APPLE_INTERNAL)) {
+#if CONFIG_AUDIT
+               audit_proc_coredump(core_proc, NULL, EFAULT);
+#endif
+               return (EFAULT);
+       }
+#endif
+

        if (IS_64BIT_PROCESS(core_proc)) {
                is_64 = 1;
                mach_header_sz = sizeof(struct mach_header_64);
        if (IS_64BIT_PROCESS(core_proc)) {
                is_64 = 1;
                mach_header_sz = sizeof(struct mach_header_64);


@@ -297,6 +337,9 @@ coredump(proc_t core_proc, uint32_t reserve_mb, int coredump_flags)
 
        VATTR_INIT(&va);        /* better to do it here than waste more stack in vnode_setsize */
        VATTR_SET(&va, va_data_size, 0);
 
        VATTR_INIT(&va);        /* better to do it here than waste more stack in vnode_setsize */
        VATTR_SET(&va, va_data_size, 0);

+       if (core_proc == initproc) {
+               VATTR_SET(&va, va_dataprotect_class, PROTECTION_CLASS_D);
+       }

        vnode_setattr(vp, &va, ctx);
        core_proc->p_acflag |= ACORE;
 
        vnode_setattr(vp, &va, ctx);
        core_proc->p_acflag |= ACORE;
 


@@ -507,3 +550,11 @@ out2:
 
        return (error);
 }
 
        return (error);
 }

+
+#else /* CONFIG_COREDUMP */
+
+/* When core dumps aren't needed, no need to compile this file at all */
+
+#error assertion failed: this section is not compiled
+
+#endif /* CONFIG_COREDUMP */