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/*
* Copyright (c) 2002-2016 Apple Inc. All rights reserved.
*
* @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
* "License"). You may not use this file except in compliance with the
* License. Please obtain a copy of the License at
* http://www.apple.com/publicsource and read it before using this file.
*
* This 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 OR NON-INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <unistd.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
#include <mach_debug/ipc_info.h>
#include <stdio.h>
#include <stdlib.h>
#include <libproc.h>
#include <TargetConditionals.h>
#include <errno.h>
#include "common.h"
#include "json.h"
#if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
#define TASK_FOR_PID_USAGE_MESG "\nPlease check your boot-args to ensure you have access to task_for_pid()."
#else
#define TASK_FOR_PID_USAGE_MESG ""
#endif
struct prog_configs lsmp_config = {
.show_all_tasks = FALSE,
.show_voucher_details = FALSE,
.verbose = FALSE,
.pid = 0,
.json_output = NULL,
};
static void print_usage(char *progname) {
fprintf(stderr, "Usage: %s -p <pid> [-a|-v|-h] \n", "lsmp");
fprintf(stderr, "Lists information about mach ports. Please see man page for description of each column.\n");
fprintf(stderr, "\t-p <pid> : print all mach ports for process id <pid>. \n");
fprintf(stderr, "\t-a : print all mach ports for all processeses. \n");
fprintf(stderr, "\t-v : print verbose details for kernel objects.\n");
fprintf(stderr, "\t-j <path> : save output as JSON to <path>.\n");
fprintf(stderr, "\t-h : print this help.\n");
exit(1);
}
static void print_task_info(my_per_task_info_t *taskinfo, mach_msg_type_number_t taskCount, my_per_task_info_t *psettaskinfo, boolean_t verbose, JSON_t json) {
printf("Process (%d) : %s\n", taskinfo->pid, taskinfo->processName);
JSON_OBJECT_BEGIN(json);
JSON_OBJECT_SET(json, pid, %d, taskinfo->pid);
JSON_OBJECT_SET(json, name, "%s", taskinfo->processName);
show_task_mach_ports(taskinfo, taskCount, psettaskinfo, json);
print_task_exception_info(taskinfo, json);
if (verbose) {
printf("\n");
print_task_threads_special_ports(taskinfo, json);
}
JSON_OBJECT_END(json);
}
int main(int argc, char *argv[]) {
kern_return_t ret;
task_t aTask;
my_per_task_info_t *taskinfo = NULL;
task_array_t tasks;
char *progname = "lsmp";
int i, option = 0;
lsmp_config.voucher_detail_length = 128; /* default values for config */
my_per_task_info_t *psettaskinfo;
mach_msg_type_number_t taskCount;
while((option = getopt(argc, argv, "hvalp:j:")) != -1) {
switch(option) {
case 'a':
/* user asked for info on all processes */
lsmp_config.pid = 0;
lsmp_config.show_all_tasks = 1;
break;
case 'l':
/* for compatibility with sysdiagnose's usage of -all */
lsmp_config.voucher_detail_length = 1024;
/* Fall through to 'v' */
case 'v':
lsmp_config.show_voucher_details = TRUE;
lsmp_config.verbose = TRUE;
break;
case 'p':
lsmp_config.pid = atoi(optarg);
if (lsmp_config.pid == 0) {
fprintf(stderr, "Unknown pid: %s\n", optarg);
exit(1);
}
break;
case 'j':
lsmp_config.json_output = JSON_OPEN(optarg);
if (lsmp_config.json_output == NULL) {
fprintf(stderr, "Unable to open \"%s\": %s\n", optarg, strerror(errno));
exit(1);
}
break;
default:
fprintf(stderr, "Unknown argument. \n");
/* Fall through to 'h' */
case 'h':
print_usage(progname);
break;
}
}
argc -= optind;
argv += optind;
/* if privileged, get the info for all tasks so we can match ports up */
if (geteuid() == 0) {
processor_set_name_array_t psets;
mach_msg_type_number_t psetCount;
mach_port_t pset_priv;
ret = host_processor_sets(mach_host_self(), &psets, &psetCount);
if (ret != KERN_SUCCESS) {
fprintf(stderr, "host_processor_sets() failed: %s\n", mach_error_string(ret));
exit(1);
}
if (psetCount != 1) {
fprintf(stderr, "Assertion Failure: pset count greater than one (%d)\n", psetCount);
exit(1);
}
/* convert the processor-set-name port to a privileged port */
ret = host_processor_set_priv(mach_host_self(), psets[0], &pset_priv);
if (ret != KERN_SUCCESS) {
fprintf(stderr, "host_processor_set_priv() failed: %s\n", mach_error_string(ret));
exit(1);
}
mach_port_deallocate(mach_task_self(), psets[0]);
vm_deallocate(mach_task_self(), (vm_address_t)psets, (vm_size_t)psetCount * sizeof(mach_port_t));
/* convert the processor-set-priv to a list of tasks for the processor set */
ret = processor_set_tasks(pset_priv, &tasks, &taskCount);
if (ret != KERN_SUCCESS) {
fprintf(stderr, "processor_set_tasks() failed: %s\n", mach_error_string(ret));
exit(1);
}
mach_port_deallocate(mach_task_self(), pset_priv);
/* swap my current instances port to be last to collect all threads and exception port info */
int myTaskPosition = -1;
for (int i = 0; i < taskCount; i++) {
if (tasks[i] == mach_task_self()){
myTaskPosition = i;
break;
}
}
if (myTaskPosition >= 0) {
mach_port_t swap_holder = MACH_PORT_NULL;
swap_holder = tasks[taskCount - 1];
tasks[taskCount - 1] = tasks[myTaskPosition];
tasks[myTaskPosition] = swap_holder;
}
}
else
{
fprintf(stderr, "warning: should run as root for best output (cross-ref to other tasks' ports).\n");
/* just the one process */
ret = task_for_pid(mach_task_self(), lsmp_config.pid, &aTask);
if (ret != KERN_SUCCESS) {
fprintf(stderr, "task_for_pid() failed: %s %s\n", mach_error_string(ret), TASK_FOR_PID_USAGE_MESG);
exit(1);
}
taskCount = 1;
tasks = &aTask;
}
/* convert each task to structure of pointer for the task info */
psettaskinfo = allocate_taskinfo_memory(taskCount);
for (i = 0; i < taskCount; i++) {
ret = collect_per_task_info(&psettaskinfo[i], tasks[i]);
if (ret != KERN_SUCCESS) {
printf("Ignoring failure of mach_port_space_info() for task %d for '-all'\n", tasks[i]);
continue;
}
if (psettaskinfo[i].pid == lsmp_config.pid)
taskinfo = &psettaskinfo[i];
}
JSON_OBJECT_BEGIN(lsmp_config.json_output);
JSON_OBJECT_SET(lsmp_config.json_output, version, "%.1f", 1.0);
JSON_KEY(lsmp_config.json_output, processes);
JSON_ARRAY_BEGIN(lsmp_config.json_output);
if (lsmp_config.show_all_tasks == FALSE) {
if (taskinfo == NULL) {
fprintf(stderr, "Failed to find task ipc information for pid %d\n", lsmp_config.pid);
exit(1);
}
print_task_info(taskinfo, taskCount, psettaskinfo, TRUE, lsmp_config.json_output);
} else {
for (i=0; i < taskCount; i++) {
if (psettaskinfo[i].valid != TRUE)
continue;
print_task_info(&psettaskinfo[i], taskCount, psettaskinfo, lsmp_config.verbose, lsmp_config.json_output);
printf("\n\n");
}
}
JSON_ARRAY_END(lsmp_config.json_output);
JSON_OBJECT_END(lsmp_config.json_output);
if (taskCount > 1) {
vm_deallocate(mach_task_self(), (vm_address_t)tasks, (vm_size_t)taskCount * sizeof(mach_port_t));
}
deallocate_taskinfo_memory(psettaskinfo);
JSON_CLOSE(lsmp_config.json_output);
return(0);
}
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