task_t pid_to_task(int pid) {
static task_t old_pid = -1;
static task_t old_task = -1;
task_t task = -1;
int err;
/* xlr8! */
if (old_task != -1 && old_pid == pid)
return old_task;
err = task_for_pid (mach_task_self (), (pid_t)pid, &task);
if ((err != KERN_SUCCESS) || !MACH_PORT_VALID (task)) {
task = task_for_pid_workaround (pid);
if (task == -1) {
eprintf ("Failed to get task %d for pid %d.\n", (int)task, (int)pid);
eprintf ("Reason: 0x%x: %s\n", err, (char *)MACH_ERROR_STRING (err));
eprintf ("You probably need to run as root or sign the binary.\n"
" Read doc/ios.md || doc/osx.md\n"
" make -C binr/radare2 ios-sign || osx-sign\n");
return -1;
}
}
old_pid = pid;
old_task = task;
return task;
}
static task_t pid_to_task(int pid) {
task_t task = 0;
static task_t old_task = 0;
static int old_pid = -1;
kern_return_t kr;
if (old_task != 0 && old_pid == pid) {
return old_task;
} else if (old_task != 0 && old_pid != pid) {
//we changed the process pid so deallocate a ref from the old_task
//since we are going to get a new task
kr = mach_port_deallocate (mach_task_self (), old_task);
if (kr != KERN_SUCCESS) {
eprintf ("pid_to_task: fail to deallocate port\n");
return 0;
}
}
int err = task_for_pid (mach_task_self (), (pid_t)pid, &task);
if ((err != KERN_SUCCESS) || !MACH_PORT_VALID (task)) {
task = task_for_pid_workaround (pid);
if (task == MACH_PORT_NULL) {
task = task_for_pid_ios9pangu (pid);
if (task != MACH_PORT_NULL) {
//eprintf ("Failed to get task %d for pid %d.\n", (int)task, (int)pid);
//eprintf ("Missing priviledges? 0x%x: %s\n", err, MACH_ERROR_STRING (err));
return -1;
}
}
}
old_task = task;
old_pid = pid;
return task;
}
static task_t pid_to_task(int pid) {
task_t task = -1;
int err = task_for_pid (mach_task_self (), (pid_t)pid, &task);
if ((err != KERN_SUCCESS) || !MACH_PORT_VALID (task)) {
task = task_for_pid_workaround (pid);
if (task == -1) {
eprintf ("Failed to get task %d for pid %d.\n", (int)task, (int)pid);
eprintf ("Missing priviledges? 0x%x: %s\n", err, MACH_ERROR_STRING (err));
#if 0
eprintf ("You probably need to add user to procmod group.\n"
" Or chmod g+s radare && chown root:procmod radare\n");
eprintf ("FMI: http://developer.apple.com/documentation/Darwin/Reference/ManPages/man8/taskgated.8.html\n");
#endif
return -1;
}
}
return task;
}
static task_t pid_to_task(RIODesc *fd, int pid) {
task_t task = 0;
static task_t old_task = 0;
static int old_pid = -1;
kern_return_t kr;
RIODescData *iodd = fd? (RIODescData *)fd->data: NULL;
RIOMach *riom = NULL;
if (iodd) {
riom = iodd->data;
if (riom && riom->task) {
old_task = riom->task;
riom->task = 0;
old_pid = iodd->pid;
}
}
if (old_task != 0) {
if (old_pid == pid) {
return old_task;
}
//we changed the process pid so deallocate a ref from the old_task
//since we are going to get a new task
kr = mach_port_deallocate (mach_task_self (), old_task);
if (kr != KERN_SUCCESS) {
eprintf ("pid_to_task: fail to deallocate port\n");
return 0;
}
}
int err = task_for_pid (mach_task_self (), (pid_t)pid, &task);
if ((err != KERN_SUCCESS) || !MACH_PORT_VALID (task)) {
task = task_for_pid_workaround (pid);
if (task == MACH_PORT_NULL) {
task = task_for_pid_ios9pangu (pid);
if (task != MACH_PORT_NULL) {
//eprintf ("Failed to get task %d for pid %d.\n", (int)task, (int)pid);
//eprintf ("Missing priviledges? 0x%x: %s\n", err, MACH_ERROR_STRING (err));
return -1;
}
}
}
old_task = task;
old_pid = pid;
return task;
}
mach_port_t get_kernel_task(void)
{
if (getuid() != 0) {
__dbg("Program should be run as root.");
return 0;
}
mach_port_t ktask = task_for_pid_workaround(0);
if (!ktask) {
__dbg("processor_set_tasks() failed. is SIP enabled?");
return 0;
}
int32_t pid;
pid_for_task(ktask, &pid);
if (pid!=0) {
__dbg("kernel task was returned by processor_set_tasks(), but it appears to have the wrong PID. If you are reading this, the universe is probably collapsing.");
return 0;
}
return ktask;
}
