This is xnu-11215.1.10. See this file in:
/*
* Copyright (c) 2017 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* 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
* 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.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <kdp/kdp_core.h>
#include <kdp/processor_core.h>
#include <kdp/core_notes.h>
#include <kern/assert.h>
#include <kern/monotonic.h>
#include <kern/zalloc.h>
#include <libkern/kernel_mach_header.h>
#include <libkern/OSAtomic.h>
#include <libsa/types.h>
#include <pexpert/pexpert.h>
#include <vm/vm_map.h>
#ifdef CONFIG_KDP_INTERACTIVE_DEBUGGING
#define roundup(x, y) ((((x) % (y)) == 0) ? \
(x) : ((x) + ((y) - ((x) % (y)))))
#define DATA_OWNER_LEGACY_BIN_SPEC "kern ver str"
/*
* Format of the legacy bin spec (LC_IDENT-like) LC_NOTE payload as expected by LLDB
*/
typedef struct {
uint32_t version; // currently 1
char version_string[KERN_COREDUMP_VERSIONSTRINGMAXSIZE];
} __attribute__((packed)) legacy_bin_spec;
#define LEGACY_BIN_SPEC_VERSION 1
__enum_closed_decl(kern_coredump_type_t, uint8_t, {
XNU_COREDUMP,
USERSPACE_COREDUMP,
COPROCESSOR_COREDUMP,
SECURE_COREDUMP,
NUM_COREDUMP_TYPES,
});
static uint32_t bin_spec_map[NUM_COREDUMP_TYPES] = {
[XNU_COREDUMP] = MAIN_BIN_SPEC_TYPE_KERNEL,
[USERSPACE_COREDUMP] = MAIN_BIN_SPEC_TYPE_USER,
[COPROCESSOR_COREDUMP] = MAIN_BIN_SPEC_TYPE_STANDALONE,
[SECURE_COREDUMP] = MAIN_BIN_SPEC_TYPE_STANDALONE
};
/*
* The processor_core_context structure describes the current
* corefile that's being generated. It also includes a pointer
* to the core_outvars which is used by the KDP code for context
* about the specific output mechanism being used.
*
* We include *remaining variables to catch inconsistencies / bugs
* in the co-processor coredump callbacks.
*/
typedef struct {
struct kdp_core_out_vars * core_outvars; /* Output procedure info (see kdp_out_stage.h) */
kern_coredump_callback_config *core_config; /* Information about core currently being dumped */
void *core_refcon; /* Reference constant associated with the coredump helper */
boolean_t core_should_be_skipped; /* Indicates whether this specific core should not be dumped */
boolean_t core_is64bit; /* Bitness of CPU */
kern_coredump_type_t core_type; /* Indicates type of this core*/
uint32_t core_mh_magic; /* Magic for mach header */
cpu_type_t core_cpu_type; /* CPU type for mach header */
cpu_subtype_t core_cpu_subtype; /* CPU subtype for mach header */
uint64_t core_file_length; /* Overall corefile length including any zero padding */
uint64_t core_file_length_compressed; /* File length after compression */
uint64_t core_segment_count; /* Number of LC_SEGMENTs in the core currently being dumped */
uint64_t core_segments_remaining; /* Number of LC_SEGMENTs that have not been added to the header */
uint64_t core_segment_byte_total; /* Sum of all the data from the LC_SEGMENTS in the core */
uint64_t core_segment_bytes_remaining; /* Quantity of data remaining from LC_SEGMENTs that have yet to be added */
uint64_t core_thread_count; /* Number of LC_THREADs to be included */
uint64_t core_threads_remaining; /* Number of LC_THREADs that have yet to be included */
uint64_t core_thread_state_size; /* Size of each LC_THREAD */
uint64_t core_note_count; /* Number of LC_NOTEs to be included */
uint64_t core_notes_remaining; /* Number of LC_NOTEs that have not been added to the header */
uint64_t core_note_bytes_total; /* Sum of all data from the LC_NOTE segments in the core */
uint64_t core_note_bytes_remaining; /* Quantity of data remaining from LC_NOTEs that have yet to be added */
uint64_t core_cur_hoffset; /* Current offset in this core's header */
uint64_t core_cur_foffset; /* Current offset in this core's overall file */
uint64_t core_header_size; /* Size of this core's header */
uint64_t core_total_bytes; /* Total amount of data to be included in this core (excluding zero fill) */
} processor_core_context;
/*
* The kern_coredump_core structure describes a core that has been
* registered for use by the coredump mechanism.
*/
struct kern_coredump_core {
struct kern_coredump_core *kcc_next; /* Next processor to dump */
void *kcc_refcon; /* Reference constant to be passed to callbacks */
char kcc_corename[MACH_CORE_FILEHEADER_NAMELEN]; /* Description of this processor */
boolean_t kcc_is64bit; /* Processor bitness */
uint32_t kcc_mh_magic; /* Magic for mach header */
cpu_type_t kcc_cpu_type; /* CPU type for mach header */
cpu_subtype_t kcc_cpu_subtype; /* CPU subtype for mach header */
kern_coredump_callback_config kcc_cb; /* Registered processor callbacks for coredump */
};
struct kern_coredump_core * kern_coredump_core_list = NULL;
struct kern_coredump_core * kern_userspace_coredump_core_list = NULL;
LCK_GRP_DECLARE(kern_userspace_coredump_core_list_lock_grp, "userspace coredump list");
LCK_MTX_DECLARE(kern_userspace_coredump_core_list_lock, &kern_userspace_coredump_core_list_lock_grp);
typedef kern_return_t (*legacy_sw_vers_registered_cb)(void *refcon, core_save_sw_vers_cb callback, void *context);
uint32_t coredump_registered_count = 0;
struct kern_coredump_core *kernel_helper = NULL;
struct kern_coredump_core *sk_helper = NULL;
static struct kern_coredump_core *
kern_register_coredump_helper_internal(int kern_coredump_config_vers, const kern_coredump_callback_config *kc_callbacks,
void *refcon, const char *core_description, kern_coredump_type_t type, boolean_t is64bit,
uint32_t mh_magic, cpu_type_t cpu_type, cpu_subtype_t cpu_subtype)
{
struct kern_coredump_core *core_helper = NULL;
kern_coredump_callback_config *core_callbacks = NULL;
if (kern_coredump_config_vers < KERN_COREDUMP_MIN_CONFIG_VERSION) {
return NULL;
}
if (kc_callbacks == NULL) {
return NULL;
}
;
if (core_description == NULL) {
return NULL;
}
if (kc_callbacks->kcc_coredump_get_summary == NULL ||
kc_callbacks->kcc_coredump_save_segment_descriptions == NULL ||
kc_callbacks->kcc_coredump_save_segment_data == NULL ||
kc_callbacks->kcc_coredump_save_thread_state == NULL) {
return NULL;
}
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
legacy_sw_vers_registered_cb legacy_vers_callback = kc_callbacks->kcc_coredump_save_sw_vers;
#pragma clang diagnostic pop
if (kern_coredump_config_vers >= KERN_COREDUMP_MIN_CONFIG_NOTES) {
if (legacy_vers_callback == NULL &&
kc_callbacks->kcc_coredump_save_sw_vers_detail == NULL) {
return NULL;
}
} else {
if (legacy_vers_callback == NULL) {
return NULL;
}
}
if (kern_coredump_config_vers >= KERN_COREDUMP_MIN_CONFIG_NOTES) {
/* Either all note related callbacks should be set or none should be set */
if ((kc_callbacks->kcc_coredump_save_note_summary == NULL) != (kc_callbacks->kcc_coredump_save_note_descriptions == NULL)) {
return NULL;
}
if ((kc_callbacks->kcc_coredump_save_note_descriptions == NULL) != (kc_callbacks->kcc_coredump_save_note_data == NULL)) {
return NULL;
}
}
#if !defined(__LP64__)
/* We don't support generating 64-bit cores on 32-bit platforms */
if (is64bit) {
return NULL;
}
#endif
core_helper = zalloc_permanent_type(struct kern_coredump_core);
core_helper->kcc_next = NULL;
core_helper->kcc_refcon = refcon;
if (type == XNU_COREDUMP || type == USERSPACE_COREDUMP || type == SECURE_COREDUMP) {
snprintf((char *)&core_helper->kcc_corename, MACH_CORE_FILEHEADER_NAMELEN, "%s", core_description);
} else {
assert(type == COPROCESSOR_COREDUMP);
/* Make sure there's room for the -cp suffix (16 - NULL char - strlen(-cp)) */
snprintf((char *)&core_helper->kcc_corename, MACH_CORE_FILEHEADER_NAMELEN, "%.12s-cp", core_description);
}
core_helper->kcc_is64bit = is64bit;
core_helper->kcc_mh_magic = mh_magic;
core_helper->kcc_cpu_type = cpu_type;
core_helper->kcc_cpu_subtype = cpu_subtype;
core_callbacks = &core_helper->kcc_cb;
core_callbacks->kcc_coredump_init = kc_callbacks->kcc_coredump_init;
core_callbacks->kcc_coredump_get_summary = kc_callbacks->kcc_coredump_get_summary;
core_callbacks->kcc_coredump_save_segment_descriptions = kc_callbacks->kcc_coredump_save_segment_descriptions;
core_callbacks->kcc_coredump_save_segment_data = kc_callbacks->kcc_coredump_save_segment_data;
core_callbacks->kcc_coredump_save_thread_state = kc_callbacks->kcc_coredump_save_thread_state;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
core_callbacks->kcc_coredump_save_sw_vers = kc_callbacks->kcc_coredump_save_sw_vers;
#pragma clang diagnostic pop
if (kern_coredump_config_vers >= KERN_COREDUMP_MIN_CONFIG_NOTES) {
core_callbacks->kcc_coredump_save_note_summary = kc_callbacks->kcc_coredump_save_note_summary;
core_callbacks->kcc_coredump_save_note_descriptions = kc_callbacks->kcc_coredump_save_note_descriptions;
core_callbacks->kcc_coredump_save_note_data = kc_callbacks->kcc_coredump_save_note_data;
core_callbacks->kcc_coredump_save_sw_vers_detail = kc_callbacks->kcc_coredump_save_sw_vers_detail;
}
if (type == XNU_COREDUMP) {
assert(kernel_helper == NULL);
kernel_helper = core_helper;
} else if (type == SECURE_COREDUMP) {
assert(sk_helper == NULL);
sk_helper = core_helper;
} else if (type == USERSPACE_COREDUMP) {
lck_mtx_lock(&kern_userspace_coredump_core_list_lock);
core_helper->kcc_next = kern_userspace_coredump_core_list;
kern_userspace_coredump_core_list = core_helper;
lck_mtx_unlock(&kern_userspace_coredump_core_list_lock);
} else {
assert(type == COPROCESSOR_COREDUMP);
do {
core_helper->kcc_next = kern_coredump_core_list;
} while (!OSCompareAndSwapPtr(kern_coredump_core_list, core_helper, &kern_coredump_core_list));
}
OSAddAtomic(1, &coredump_registered_count);
kprintf("Registered coredump handler for %s\n", core_description);
return core_helper;
}
kern_return_t
kern_register_coredump_helper(int kern_coredump_config_vers, const kern_coredump_callback_config *kc_callbacks,
void *refcon, const char *core_description, boolean_t is64bit, uint32_t mh_magic,
cpu_type_t cpu_type, cpu_subtype_t cpu_subtype)
{
if (coredump_registered_count >= KERN_COREDUMP_MAX_CORES) {
return KERN_RESOURCE_SHORTAGE;
}
if (kern_register_coredump_helper_internal(kern_coredump_config_vers, kc_callbacks, refcon, core_description, COPROCESSOR_COREDUMP,
is64bit, mh_magic, cpu_type, cpu_subtype) == NULL) {
return KERN_INVALID_ARGUMENT;
}
return KERN_SUCCESS;
}
kern_return_t
kern_register_xnu_coredump_helper(kern_coredump_callback_config *kc_callbacks)
{
#if defined(__LP64__)
boolean_t is64bit = TRUE;
#else
boolean_t is64bit = FALSE;
#endif
if (kern_register_coredump_helper_internal(KERN_COREDUMP_CONFIG_VERSION, kc_callbacks, NULL, "kernel", XNU_COREDUMP, is64bit,
_mh_execute_header.magic, _mh_execute_header.cputype, _mh_execute_header.cpusubtype) == NULL) {
return KERN_FAILURE;
}
return KERN_SUCCESS;
}
kern_return_t
kern_register_sk_coredump_helper(kern_coredump_callback_config *sk_callbacks, void *refcon)
{
if (kern_register_coredump_helper_internal(KERN_COREDUMP_CONFIG_VERSION, sk_callbacks,
refcon, "secure-kernel", SECURE_COREDUMP, TRUE, _mh_execute_header.magic,
_mh_execute_header.cputype, _mh_execute_header.cpusubtype) == NULL) {
return KERN_FAILURE;
}
return KERN_SUCCESS;
}
extern cpu_type_t
process_cpu_type(void * bsd_info);
extern cpu_type_t
process_cpu_subtype(void * bsd_info);
extern char *proc_name_address(void *p);
kern_return_t
kern_register_userspace_coredump(task_t task, const char * name)
{
kern_return_t result;
struct kern_userspace_coredump_context * context = NULL;
boolean_t is64bit;
uint32_t mh_magic;
uint32_t mh_cputype;
uint32_t mh_cpusubtype;
kern_coredump_callback_config userkc_callbacks;
is64bit = task_has_64Bit_addr(task);
mh_magic = is64bit ? MH_MAGIC_64 : MH_MAGIC;
mh_cputype = process_cpu_type(get_bsdtask_info(task));
mh_cpusubtype = process_cpu_subtype(get_bsdtask_info(task));
context = kalloc_type(struct kern_userspace_coredump_context, (zalloc_flags_t)(Z_WAITOK | Z_ZERO));
context->task = task;
userkc_callbacks.kcc_coredump_init = user_dump_init;
userkc_callbacks.kcc_coredump_get_summary = user_dump_save_summary;
userkc_callbacks.kcc_coredump_save_segment_descriptions = user_dump_save_seg_descriptions;
userkc_callbacks.kcc_coredump_save_thread_state = user_dump_save_thread_state;
userkc_callbacks.kcc_coredump_save_sw_vers_detail = user_dump_save_sw_vers_detail;
userkc_callbacks.kcc_coredump_save_segment_data = user_dump_save_segment_data;
userkc_callbacks.kcc_coredump_save_note_summary = user_dump_save_note_summary;
userkc_callbacks.kcc_coredump_save_note_descriptions = user_dump_save_note_descriptions;
userkc_callbacks.kcc_coredump_save_note_data = user_dump_save_note_data;
if (kern_register_coredump_helper_internal(KERN_COREDUMP_CONFIG_VERSION, &userkc_callbacks, context, name, USERSPACE_COREDUMP, is64bit,
mh_magic, mh_cputype, mh_cpusubtype) == NULL) {
result = KERN_FAILURE;
goto finish;
}
result = KERN_SUCCESS;
finish:
if (result != KERN_SUCCESS && context != NULL) {
kfree_type(struct kern_userspace_coredump_context, context);
}
return result;
}
kern_return_t
kern_unregister_userspace_coredump(task_t task)
{
struct kern_coredump_core * current_core = NULL;
struct kern_coredump_core * previous_core = NULL;
lck_mtx_lock(&kern_userspace_coredump_core_list_lock);
current_core = kern_userspace_coredump_core_list;
while (current_core) {
struct kern_userspace_coredump_context * context = (struct kern_userspace_coredump_context *)current_core->kcc_refcon;
assert(context != NULL);
if (context->task == task) {
/* remove current_core from the list */
if (previous_core == NULL) {
kern_userspace_coredump_core_list = current_core->kcc_next;
} else {
previous_core->kcc_next = current_core->kcc_next;
}
break;
}
previous_core = current_core;
current_core = current_core->kcc_next;
}
lck_mtx_unlock(&kern_userspace_coredump_core_list_lock);
if (current_core) {
kfree_type(struct kern_userspace_coredump_context, current_core->kcc_refcon);
OSAddAtomic(-1, &coredump_registered_count);
return KERN_SUCCESS;
}
return KERN_NOT_FOUND;
}
/*
* Save LC_NOTE metadata about the core we are going to write before we write the mach header
*/
static int
coredump_save_note_summary(uint64_t core_note_count, uint64_t core_note_byte_count, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
if (!core_note_count || !core_note_byte_count || !context) {
return KERN_INVALID_ARGUMENT;
}
core_context->core_note_count = core_context->core_notes_remaining = core_note_count;
core_context->core_note_bytes_total = core_context->core_note_bytes_remaining = core_note_byte_count;
return KERN_SUCCESS;
}
/*
* Save metadata about the core we're about to write, write out the mach header
*/
static int
coredump_save_summary(uint64_t core_segment_count, uint64_t core_byte_count,
uint64_t thread_count, uint64_t thread_state_size,
__unused uint64_t misc_bytes_count, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
uint32_t sizeofcmds = 0, numcmds = 0;
bool should_skip = false;
int ret = 0;
if (!core_segment_count || !core_byte_count
|| (thread_state_size > KERN_COREDUMP_THREADSIZE_MAX)) {
return KERN_INVALID_ARGUMENT;
}
/*
* secure coredumps and coprocessor coredumps aren't required to contain any thread state,
* because it's reconstructed during the lldb session
*/
if (core_context->core_type != SECURE_COREDUMP && core_context->core_type != COPROCESSOR_COREDUMP
&& (!thread_count || !thread_state_size)) {
return KERN_INVALID_ARGUMENT;
}
/* Initialize core_context */
core_context->core_segments_remaining = core_context->core_segment_count = core_segment_count;
core_context->core_segment_bytes_remaining = core_context->core_segment_byte_total = core_byte_count;
core_context->core_threads_remaining = core_context->core_thread_count = thread_count;
core_context->core_thread_state_size = thread_state_size;
/* Account for the LC_NOTE needed to store version/load information */
core_context->core_note_count = core_context->core_notes_remaining = (core_context->core_note_count + 1);
size_t vers_note_length = sizeof(main_bin_spec_note_t);
if (core_context->core_config->kcc_coredump_save_sw_vers_detail == NULL) {
vers_note_length = sizeof(legacy_bin_spec);
}
core_context->core_note_bytes_total = core_context->core_note_bytes_remaining = (core_context->core_note_bytes_total + vers_note_length);
#if defined(__LP64__)
if (core_context->core_is64bit) {
sizeofcmds = (uint32_t)(core_context->core_segment_count * sizeof(struct segment_command_64) +
(core_context->core_threads_remaining * core_context->core_thread_state_size) +
(core_context->core_note_count * sizeof(struct note_command)));
core_context->core_header_size = sizeofcmds + sizeof(struct mach_header_64);
} else
#endif /* defined(__LP64__) */
{
sizeofcmds = (uint32_t)(core_context->core_segment_count * sizeof(struct segment_command) +
(core_context->core_threads_remaining * core_context->core_thread_state_size) +
(core_context->core_note_count * sizeof(struct note_command)));
core_context->core_header_size = sizeofcmds + sizeof(struct mach_header);
}
core_context->core_total_bytes = core_context->core_header_size + core_context->core_segment_byte_total + core_context->core_note_bytes_total;
core_context->core_file_length = round_page(core_context->core_header_size) + core_context->core_segment_byte_total + core_context->core_note_bytes_total;
core_context->core_cur_foffset = round_page(core_context->core_header_size);
numcmds = (uint32_t)(core_context->core_segment_count + core_context->core_thread_count + core_context->core_note_count);
/*
* Reset the zstream and other output context before writing any data out. We do this here
* to update the total file length on the outvars before we start writing out.
*/
ret = kdp_reset_output_vars(core_context->core_outvars, core_context->core_file_length, true, &should_skip);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to reset the out vars : kdp_reset_output_vars(%p, %llu, true, %p) returned error 0x%x\n",
__func__, core_context->core_outvars, core_context->core_file_length, &should_skip, ret);
return ret;
}
if (should_skip) {
core_context->core_should_be_skipped = TRUE;
return KERN_SUCCESS;
}
/* Construct core file header */
#if defined(__LP64__)
if (core_context->core_is64bit) {
struct mach_header_64 core_header = { };
core_header.magic = core_context->core_mh_magic;
core_header.cputype = core_context->core_cpu_type;
core_header.cpusubtype = core_context->core_cpu_subtype;
core_header.filetype = MH_CORE;
core_header.ncmds = numcmds;
core_header.sizeofcmds = sizeofcmds;
core_header.flags = 0;
/* Send the core_header to the output procedure */
ret = kdp_core_output(core_context->core_outvars, sizeof(core_header), (caddr_t)&core_header);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write mach header : kdp_core_output(%p, %lu, %p) returned error 0x%x\n",
__func__, core_context->core_outvars, sizeof(core_header), &core_header, ret);
return ret;
}
core_context->core_cur_hoffset += sizeof(core_header);
} else
#endif /* defined(__LP64__) */
{
struct mach_header core_header = { };
core_header.magic = core_context->core_mh_magic;
core_header.cputype = core_context->core_cpu_type;
core_header.cpusubtype = core_context->core_cpu_subtype;
core_header.filetype = MH_CORE;
core_header.ncmds = numcmds;
core_header.sizeofcmds = sizeofcmds;
core_header.flags = 0;
/* Send the core_header to the output procedure */
ret = kdp_core_output(core_context->core_outvars, sizeof(core_header), (caddr_t)&core_header);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write mach header : kdp_core_output(%p, %lu, %p) returned error 0x%x\n",
__func__, core_context->core_outvars, sizeof(core_header), &core_header, ret);
return ret;
}
core_context->core_cur_hoffset += sizeof(core_header);
}
return KERN_SUCCESS;
}
/*
* Construct a segment command for the specified segment.
*/
static int
coredump_save_segment_descriptions(uint64_t seg_start, uint64_t seg_end,
void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
int ret;
uint64_t size = seg_end - seg_start;
if (seg_end <= seg_start) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : called with invalid addresses : start 0x%llx >= end 0x%llx\n",
__func__, seg_start, seg_end, context, seg_start, seg_end);
return KERN_INVALID_ARGUMENT;
}
if (core_context->core_segments_remaining == 0) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : coredump_save_segment_descriptions() called too many times, %llu segment descriptions already recorded\n",
__func__, seg_start, seg_end, context, core_context->core_segment_count);
return KERN_INVALID_ARGUMENT;
}
/* Construct segment command */
#if defined(__LP64__)
if (core_context->core_is64bit) {
struct segment_command_64 seg_command = { };
if (core_context->core_cur_hoffset + sizeof(seg_command) > core_context->core_header_size) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : ran out of space to save commands with %llu of %llu remaining\n",
__func__, seg_start, seg_end, context, core_context->core_segments_remaining, core_context->core_segment_count);
return KERN_NO_SPACE;
}
seg_command.cmd = LC_SEGMENT_64;
seg_command.cmdsize = sizeof(seg_command);
seg_command.segname[0] = 0;
seg_command.vmaddr = seg_start;
seg_command.vmsize = size;
seg_command.fileoff = core_context->core_cur_foffset;
seg_command.filesize = size;
seg_command.maxprot = VM_PROT_READ;
seg_command.initprot = VM_PROT_READ;
/* Flush new command to output */
ret = kdp_core_output(core_context->core_outvars, sizeof(seg_command), (caddr_t)&seg_command);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : failed to write segment %llu of %llu. kdp_core_output(%p, %lu, %p) returned error %d\n",
__func__, seg_start, seg_end, context, core_context->core_segment_count - core_context->core_segments_remaining,
core_context->core_segment_count, core_context->core_outvars, sizeof(seg_command), &seg_command, ret);
return ret;
}
core_context->core_cur_hoffset += sizeof(seg_command);
} else
#endif /* defined(__LP64__) */
{
struct segment_command seg_command = { };
if (seg_start > UINT32_MAX || seg_end > UINT32_MAX) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : called with invalid addresses for 32-bit : start 0x%llx, end 0x%llx\n",
__func__, seg_start, seg_end, context, seg_start, seg_end);
return KERN_INVALID_ARGUMENT;
}
if (core_context->core_cur_hoffset + sizeof(seg_command) > core_context->core_header_size) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : ran out of space to save commands with %llu of %llu remaining\n",
__func__, seg_start, seg_end, context, core_context->core_segments_remaining, core_context->core_segment_count);
return KERN_NO_SPACE;
}
seg_command.cmd = LC_SEGMENT;
seg_command.cmdsize = sizeof(seg_command);
seg_command.segname[0] = 0;
seg_command.vmaddr = (uint32_t) seg_start;
seg_command.vmsize = (uint32_t) size;
seg_command.fileoff = (uint32_t) core_context->core_cur_foffset;
seg_command.filesize = (uint32_t) size;
seg_command.maxprot = VM_PROT_READ;
seg_command.initprot = VM_PROT_READ;
/* Flush new command to output */
ret = kdp_core_output(core_context->core_outvars, sizeof(seg_command), (caddr_t)&seg_command);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s(0x%llx, 0x%llx, %p) : failed to write segment %llu of %llu : kdp_core_output(%p, %lu, %p) returned error 0x%x\n",
__func__, seg_start, seg_end, context, core_context->core_segment_count - core_context->core_segments_remaining,
core_context->core_segment_count, core_context->core_outvars, sizeof(seg_command), &seg_command, ret);
return ret;
}
core_context->core_cur_hoffset += sizeof(seg_command);
}
/* Update coredump context */
core_context->core_segments_remaining--;
core_context->core_cur_foffset += size;
return KERN_SUCCESS;
}
/*
* Construct a LC_NOTE command for the specified note
*/
static int
coredump_save_note_description(const char * data_owner, uint64_t length, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
int ret;
if (data_owner == NULL || (strlen(data_owner) == 0)) {
kern_coredump_log(context, "%s() called with invalid data_owner\n", __func__);
return KERN_INVALID_ARGUMENT;
}
if (core_context->core_notes_remaining == 0) {
kern_coredump_log(context, "%s() called too many times, %llu note descriptions already recorded\n",
__func__, core_context->core_note_count);
return KERN_INVALID_ARGUMENT;
}
struct note_command note = { .cmd = LC_NOTE,
.cmdsize = sizeof(struct note_command),
.offset = core_context->core_cur_foffset,
.size = length, };
strlcpy((char *) ¬e.data_owner, data_owner, sizeof(note.data_owner));
/* Flush new command to output */
ret = kdp_core_output(core_context->core_outvars, sizeof(note), (caddr_t)¬e);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write note %llu of %llu : kdp_core_output() returned error 0x%x\n",
__func__, core_context->core_note_count - core_context->core_notes_remaining,
core_context->core_note_count, ret);
return ret;
}
/* Update coredump context */
core_context->core_cur_foffset += length;
core_context->core_cur_hoffset += sizeof(note);
core_context->core_notes_remaining--;
return KERN_SUCCESS;
}
/*
* Save thread state.
*
* Passed thread_state is expected to be a struct thread_command
*/
static int
coredump_save_thread_state(void *thread_state, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
struct thread_command *tc = (struct thread_command *)thread_state;
int ret;
if (tc->cmd != LC_THREAD) {
kern_coredump_log(context, "%s() : found %d expected LC_THREAD (%d)\n", __func__, tc->cmd, LC_THREAD);
return KERN_INVALID_ARGUMENT;
}
if (core_context->core_cur_hoffset + core_context->core_thread_state_size > core_context->core_header_size) {
kern_coredump_log(context, "%s() : ran out of space to save threads with %llu of %llu remaining\n", __func__,
core_context->core_threads_remaining, core_context->core_thread_count);
return KERN_NO_SPACE;
}
ret = kdp_core_output(core_context->core_outvars, core_context->core_thread_state_size, (caddr_t)thread_state);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write thread data : kdp_core_output() returned 0x%x\n", __func__, ret);
return ret;
}
core_context->core_threads_remaining--;
core_context->core_cur_hoffset += core_context->core_thread_state_size;
return KERN_SUCCESS;
}
static int
coredump_save_segment_data(void *seg_data, uint64_t length, void *context)
{
int ret;
processor_core_context *core_context = (processor_core_context *)context;
if (length > core_context->core_segment_bytes_remaining) {
kern_coredump_log(context, "%s(%p, %llu, %p) : called with too much data, %llu written, %llu left\n", __func__,
seg_data, length, context, core_context->core_segment_byte_total - core_context->core_segment_bytes_remaining,
core_context->core_segment_bytes_remaining);
return KERN_INVALID_ARGUMENT;
}
ret = kdp_core_output(core_context->core_outvars, length, (caddr_t)seg_data);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write data (%llu bytes remaining) :%d\n", __func__,
core_context->core_segment_bytes_remaining, ret);
return ret;
}
core_context->core_segment_bytes_remaining -= length;
core_context->core_cur_foffset += length;
return KERN_SUCCESS;
}
static int
coredump_save_note_data(void *note_data, uint64_t length, void *context)
{
int ret;
processor_core_context *core_context = (processor_core_context *)context;
if (length > core_context->core_note_bytes_remaining) {
kern_coredump_log(context, "%s(%p, %llu, %p) : called with too much data, %llu written, %llu left\n", __func__,
note_data, length, context, core_context->core_note_bytes_total - core_context->core_note_bytes_remaining,
core_context->core_note_bytes_remaining);
return KERN_INVALID_ARGUMENT;
}
ret = kdp_core_output(core_context->core_outvars, length, (caddr_t)note_data);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write data (%llu bytes remaining) :%d\n", __func__,
core_context->core_note_bytes_remaining, ret);
return ret;
}
core_context->core_note_bytes_remaining -= length;
core_context->core_cur_foffset += length;
return KERN_SUCCESS;
}
static int
coredump_save_sw_vers_legacy(void *sw_vers, uint64_t length, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
int ret;
if (length > KERN_COREDUMP_VERSIONSTRINGMAXSIZE || !length) {
kern_coredump_log(context, "%s(%p, %llu, %p) : called with invalid length %llu\n", __func__,
sw_vers, length, context, length);
return KERN_INVALID_ARGUMENT;
}
uint32_t version = LEGACY_BIN_SPEC_VERSION;
ret = coredump_save_note_data(&version, sizeof(version), context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write legacy bin spec version : coredump_save_note_data() returned 0x%x\n",
__func__, ret);
return ret;
}
ret = coredump_save_note_data(sw_vers, length, context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write sw_vers string : coredump_save_note_data() returned 0x%x\n",
__func__, ret);
return ret;
}
if (length < KERN_COREDUMP_VERSIONSTRINGMAXSIZE) {
/* Zero fill to the full size */
uint64_t length_to_zero = (KERN_COREDUMP_VERSIONSTRINGMAXSIZE - length);
ret = kdp_core_output(core_context->core_outvars, length_to_zero, NULL);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write zero fill padding : kdp_core_output(%p, %llu, NULL) returned 0x%x\n",
__func__, core_context->core_outvars, length_to_zero, ret);
return ret;
}
core_context->core_note_bytes_remaining -= length_to_zero;
core_context->core_cur_foffset += length_to_zero;
}
return KERN_SUCCESS;
}
static int
coredump_save_sw_vers(uint64_t address, uuid_t uuid, uint32_t log2_pagesize, void *context)
{
processor_core_context *core_context = (processor_core_context *)context;
int ret;
uint32_t type = bin_spec_map[core_context->core_type];
main_bin_spec_note_t spec = {
.version = MAIN_BIN_SPEC_VERSION,
.type = type,
.address = address,
.log2_pagesize = log2_pagesize,
};
uuid_copy(*((uuid_t *)&spec.uuid), uuid);
ret = coredump_save_note_data(&spec, sizeof(spec), context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(context, "%s() : failed to write main bin spec structure : coredump_save_note_data() returned 0x%x\n", __func__, ret);
return ret;
}
return KERN_SUCCESS;
}
static kern_return_t
kern_coredump_routine(void *core_outvars, struct kern_coredump_core *current_core, uint64_t core_begin_offset, uint64_t *core_file_length, boolean_t *header_update_failed, kern_coredump_type_t type, uint64_t details_flags)
{
#if CONFIG_CPU_COUNTERS
uint64_t start_cycles;
uint64_t end_cycles;
#endif // CONFIG_CPU_COUNTERS
kern_return_t ret;
processor_core_context context = { };
*core_file_length = 0;
*header_update_failed = FALSE;
#if CONFIG_CPU_COUNTERS
start_cycles = mt_cur_cpu_cycles();
#endif // CONFIG_CPU_COUNTERS
/* Setup the coredump context */
context.core_outvars = core_outvars;
context.core_config = ¤t_core->kcc_cb;
context.core_refcon = current_core->kcc_refcon;
context.core_is64bit = current_core->kcc_is64bit;
context.core_mh_magic = current_core->kcc_mh_magic;
context.core_cpu_type = current_core->kcc_cpu_type;
context.core_cpu_subtype = current_core->kcc_cpu_subtype;
context.core_type = type;
kern_coredump_log(&context, "\nBeginning coredump of %s\n", current_core->kcc_corename);
if (current_core->kcc_cb.kcc_coredump_init != NULL) {
ret = current_core->kcc_cb.kcc_coredump_init(context.core_refcon, &context);
if (ret == KERN_NODE_DOWN) {
kern_coredump_log(&context, "coredump_init returned KERN_NODE_DOWN, skipping this core\n");
return KERN_SUCCESS;
} else if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : coredump_init failed with %d\n", __func__, ret);
return ret;
}
}
/* Retrieve information about LC_NOTE data we will write out as part of the core before we populate the general header */
if (current_core->kcc_cb.kcc_coredump_save_note_summary != NULL) {
ret = current_core->kcc_cb.kcc_coredump_save_note_summary(context.core_refcon, coredump_save_note_summary, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : save_note_note_summary failed with %d\n", __func__, ret);
return ret;
}
}
/* Populate the context with metadata about the corefile (cmd info, sizes etc) */
ret = current_core->kcc_cb.kcc_coredump_get_summary(context.core_refcon, coredump_save_summary, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : get_summary failed with %d\n", __func__, ret);
return ret;
}
if (context.core_should_be_skipped) {
kern_coredump_log(&context, "Skipping coredump\n");
return KERN_SUCCESS;
}
if (context.core_header_size == 0) {
kern_coredump_log(&context, "(%s) : header size not populated after coredump_get_summary\n", __func__);
return KERN_FAILURE;
}
/* Save the segment descriptions for the segments to be included */
ret = current_core->kcc_cb.kcc_coredump_save_segment_descriptions(context.core_refcon, coredump_save_segment_descriptions,
&context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : save_segment_descriptions failed with %d\n", __func__, ret);
return ret;
}
if (context.core_segments_remaining != 0) {
kern_coredump_log(&context, "(%s) : save_segment_descriptions returned without all segment descriptions written, %llu of %llu remaining\n",
__func__, context.core_segments_remaining, context.core_segment_count);
return KERN_FAILURE;
}
/* write out the LC_NOTE with the binary info */
if (current_core->kcc_cb.kcc_coredump_save_sw_vers_detail != NULL) {
ret = coredump_save_note_description(MAIN_BIN_SPEC_DATA_OWNER, sizeof(main_bin_spec_note_t), &context);
} else {
ret = coredump_save_note_description(DATA_OWNER_LEGACY_BIN_SPEC, sizeof(legacy_bin_spec), &context);
}
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : coredump_save_note_description returned %d while writing binary info LC_NOTE description", __func__, ret);
return ret;
}
/* Save LC_NOTE desciptions for any additional notes to be included */
if (current_core->kcc_cb.kcc_coredump_save_note_descriptions != NULL) {
ret = current_core->kcc_cb.kcc_coredump_save_note_descriptions(context.core_refcon, coredump_save_note_description, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : kcc_coredump_save_note_descriptions failed with %d\n", __func__, ret);
return ret;
}
}
if (context.core_notes_remaining != 0) {
kern_coredump_log(&context, "(%s) : save_note_descriptions returned without all note descriptions written, %llu of %llu remaining\n",
__func__, context.core_notes_remaining, context.core_note_count);
return KERN_FAILURE;
}
/*
* Save the thread commands/state
*
* TODO: Should this buffer be allocated at boot rather than on the stack?
*/
if (context.core_thread_state_size) {
char threadstatebuf[context.core_thread_state_size];
ret = current_core->kcc_cb.kcc_coredump_save_thread_state(context.core_refcon, &threadstatebuf, coredump_save_thread_state,
&context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : save_thread_state failed with %d\n", __func__, ret);
return ret;
}
}
if (context.core_threads_remaining != 0) {
kern_coredump_log(&context, "(%s) : save_thread_state returned without all thread descriptions written, %llu of %llu remaining\n",
__func__, context.core_threads_remaining, context.core_thread_count);
return KERN_FAILURE;
}
assert(context.core_cur_hoffset == context.core_header_size);
/* Zero fill between the end of the header and the beginning of the segment data file offset */
ret = kdp_core_output(context.core_outvars, (round_page(context.core_header_size) - context.core_header_size), NULL);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(kern_coredump_routine) : failed to write zero fill padding (%llu bytes remaining) : kdp_core_output(%p, %llu, NULL) returned 0x%x\n",
context.core_segment_bytes_remaining, context.core_outvars, (round_page(context.core_header_size) - context.core_header_size), ret);
return ret;
}
/* Reset our local current file offset before we start writing out segment data */
context.core_cur_foffset = round_page(context.core_header_size);
ret = current_core->kcc_cb.kcc_coredump_save_segment_data(context.core_refcon, coredump_save_segment_data, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "coredump_save_segment_data failed with %d\n", ret);
return ret;
}
if (context.core_segment_bytes_remaining != 0) {
kern_coredump_log(&context, "(kern_coredump_routine) : save_segment_data returned without all segment data written, %llu of %llu remaining\n",
context.core_segment_bytes_remaining, context.core_segment_byte_total);
return KERN_FAILURE;
}
/* Save out the LC_NOTE segment data, starting with the binary info / sw vers one */
if (current_core->kcc_cb.kcc_coredump_save_sw_vers_detail != NULL) {
ret = current_core->kcc_cb.kcc_coredump_save_sw_vers_detail(context.core_refcon, coredump_save_sw_vers, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : kcc_coredump_save_sw_vers_detail_cb failed with 0x%x\n", __func__, ret);
return ret;
}
} else {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
ret = current_core->kcc_cb.kcc_coredump_save_sw_vers(context.core_refcon, coredump_save_sw_vers_legacy, &context);
#pragma clang diagnostic pop
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : kcc_coredump_save_sw_vers failed with 0x%x\n", __func__, ret);
return ret;
}
}
if (current_core->kcc_cb.kcc_coredump_save_note_data != NULL) {
ret = current_core->kcc_cb.kcc_coredump_save_note_data(context.core_refcon, coredump_save_note_data, &context);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(%s) : kcc_coredump_save_note_data failed with 0x%x\n", __func__, ret);
return ret;
}
}
if (context.core_note_bytes_remaining != 0) {
kern_coredump_log(&context, "(%s) : kcc_coredump_save_note_data returned without all note data written, %llu of %llu remaining\n",
__func__, context.core_note_bytes_remaining, context.core_note_bytes_total);
return KERN_FAILURE;
}
/* Flush the last data out */
ret = kdp_core_output(context.core_outvars, 0, NULL);
if (ret != KERN_SUCCESS) {
kern_coredump_log(&context, "(kern_coredump_routine) : failed to flush final core data : kdp_core_output(%p, 0, NULL) returned 0x%x\n",
context.core_outvars, ret);
return ret;
}
kern_coredump_log(&context, "Done\nCoredump complete of %s, dumped %llu segments (%llu bytes), %llu threads (%llu bytes) overall uncompressed file length %llu bytes.",
current_core->kcc_corename, context.core_segment_count, context.core_segment_byte_total, context.core_thread_count,
(context.core_thread_count * context.core_thread_state_size), context.core_file_length);
#if CONFIG_CPU_COUNTERS
end_cycles = mt_cur_cpu_cycles();
kern_coredump_log(&context, "\nCore dump took %llu cycles\n", end_cycles - start_cycles);
#endif // CONFIG_CPU_COUNTERS
if (core_begin_offset) {
/* If we're writing to disk (we have a begin offset), we need to update the header */
ret = kern_dump_record_file(context.core_outvars, current_core->kcc_corename, core_begin_offset, &context.core_file_length_compressed, details_flags);
if (ret != KERN_SUCCESS) {
*header_update_failed = TRUE;
kern_coredump_log(&context, "\n(kern_coredump_routine) : kern_dump_record_file failed with %d\n", ret);
return ret;
}
}
kern_coredump_log(&context, " Compressed file length is %llu bytes\n", context.core_file_length_compressed);
*core_file_length = context.core_file_length_compressed;
return KERN_SUCCESS;
}
/*
* Collect coprocessor and userspace coredumps
*/
static kern_return_t
kern_do_auxiliary_coredump(void * core_outvars, struct kern_coredump_core * list, uint64_t * last_file_offset, uint64_t details_flags)
{
struct kern_coredump_core *current_core = list;
uint64_t prev_core_length = 0;
boolean_t header_update_failed = FALSE;
kern_coredump_type_t type = current_core == kern_userspace_coredump_core_list ? USERSPACE_COREDUMP : COPROCESSOR_COREDUMP;
kern_return_t ret = KERN_SUCCESS;
kern_return_t cur_ret = KERN_SUCCESS;
if (type == USERSPACE_COREDUMP && kdp_lck_mtx_lock_spin_is_acquired(&kern_userspace_coredump_core_list_lock)) {
// Userspace coredump list was being modified at the time of the panic. Skip collecting userspace coredumps
kern_coredump_log(NULL, "Skipping userspace coredump, coredump list is locked\n");
return KERN_FAILURE;
}
while (current_core) {
/* Seek to the beginning of the next file */
cur_ret = kern_dump_seek_to_next_file(core_outvars, *last_file_offset);
if (cur_ret != KERN_SUCCESS) {
kern_coredump_log(NULL, "Failed to seek to beginning of next core\n");
return KERN_FAILURE;
}
cur_ret = kern_coredump_routine(core_outvars, current_core, *last_file_offset, &prev_core_length, &header_update_failed, type, details_flags);
if (cur_ret != KERN_SUCCESS) {
// As long as we didn't fail while updating the header for the raw file, we should be able to try
// to capture other corefiles.
if (header_update_failed) {
// The header may be in an inconsistent state, so bail now
return KERN_FAILURE;
} else {
// Try to capture other corefiles even if one failed, update the overall return
// status though
prev_core_length = 0;
ret = KERN_FAILURE;
}
}
/* Calculate the offset of the beginning of the next core in the raw file */
*last_file_offset = roundup(((*last_file_offset) + prev_core_length), KERN_COREDUMP_BEGIN_FILEBYTES_ALIGN);
prev_core_length = 0;
current_core = current_core->kcc_next;
}
return ret;
}
kern_return_t
kern_do_coredump(void *core_outvars, boolean_t kernel_only, uint64_t first_file_offset, uint64_t *last_file_offset, uint64_t details_flags)
{
uint64_t prev_core_length = 0;
kern_return_t cur_ret = KERN_SUCCESS, ret = KERN_SUCCESS;
boolean_t header_update_failed = FALSE;
assert(last_file_offset != NULL);
*last_file_offset = first_file_offset;
cur_ret = kern_coredump_routine(core_outvars, kernel_helper, *last_file_offset, &prev_core_length, &header_update_failed, XNU_COREDUMP, details_flags);
if (cur_ret != KERN_SUCCESS) {
// As long as we didn't fail while updating the header for the raw file, we should be able to try
// to capture other corefiles.
if (header_update_failed) {
// The header may be in an inconsistent state, so bail now
return KERN_FAILURE;
} else {
prev_core_length = 0;
ret = KERN_FAILURE;
}
}
*last_file_offset = roundup(((*last_file_offset) + prev_core_length), KERN_COREDUMP_BEGIN_FILEBYTES_ALIGN);
if (kernel_only) {
return ret;
}
/* Dump secure kernel if allowed */
if (sk_helper) {
/* Seek to the beginning of next file. */
cur_ret = kern_dump_seek_to_next_file(core_outvars, *last_file_offset);
if (cur_ret != KERN_SUCCESS) {
kern_coredump_log(NULL, "secure_core: Unable to seek to the start of file: %d\n", cur_ret);
return KERN_FAILURE;
}
/* Dump the secure core to disk. */
cur_ret = kern_coredump_routine(core_outvars, sk_helper, *last_file_offset, &prev_core_length, &header_update_failed, SECURE_COREDUMP, details_flags);
if (cur_ret != KERN_SUCCESS) {
if (header_update_failed) {
return KERN_FAILURE;
} else {
prev_core_length = 0;
ret = KERN_FAILURE;
}
}
*last_file_offset = roundup(((*last_file_offset) + prev_core_length), KERN_COREDUMP_BEGIN_FILEBYTES_ALIGN);
}
// Collect coprocessor coredumps first, in case userspace coredumps fail
ret = kern_do_auxiliary_coredump(core_outvars, kern_coredump_core_list, last_file_offset, details_flags);
if (ret != KERN_SUCCESS) {
kern_coredump_log(NULL, "Failed to dump coprocessor cores\n");
return ret;
}
ret = kern_do_auxiliary_coredump(core_outvars, kern_userspace_coredump_core_list, last_file_offset, details_flags);
if (ret != KERN_SUCCESS) {
kern_coredump_log(NULL, "Failed to dump userspace process cores\n");
return ret;
}
return KERN_SUCCESS;
}
#else /* CONFIG_KDP_INTERACTIVE_DEBUGGING */
kern_return_t
kern_register_coredump_helper(int kern_coredump_config_vers, const kern_coredump_callback_config *kc_callbacks, void* refcon,
const char *core_description, boolean_t is64bit, uint32_t mh_magic,
cpu_type_t cpu_type, cpu_subtype_t cpu_subtype)
{
#pragma unused(kern_coredump_config_vers, kc_callbacks, refcon, core_description, is64bit, mh_magic, cpu_type, cpu_subtype)
return KERN_NOT_SUPPORTED;
}
kern_return_t
kern_register_sk_coredump_helper(__unused kern_coredump_callback_config *sk_callbacks, __unused void *refcon)
{
return KERN_NOT_SUPPORTED;
}
kern_return_t
kern_register_userspace_coredump(task_t task, const char * name)
{
(void)task;
(void)name;
return KERN_NOT_SUPPORTED;
}
kern_return_t
kern_unregister_userspace_coredump(task_t task)
{
(void)task;
return KERN_NOT_SUPPORTED;
}
#endif /* CONFIG_KDP_INTERACTIVE_DEBUGGING */
/*
* Must be callable with a NULL context
*/
void
kern_coredump_log(void *context, const char *string, ...)
{
#pragma unused(context)
va_list coredump_log_args;
va_start(coredump_log_args, string);
_doprnt(string, &coredump_log_args, consdebug_putc, 16);
va_end(coredump_log_args);
#if defined(__arm64__)
paniclog_flush();
#endif
}