static int mach_write_at(RIO *io, RIODesc *desc, const void *buf, int len, ut64 addr) {
vm_address_t vaddr = addr;
vm_address_t pageaddr;
vm_size_t pagesize;
vm_size_t total_size;
int operms = 0;
int pid = __get_pid (desc);
if (!desc || pid < 0) {
return 0;
}
task_t task = pid_to_task (desc, pid);
if (len < 1 || task_is_dead (desc, task)) {
return 0;
}
pageaddr = tsk_getpagebase (desc, addr);
pagesize = tsk_pagesize (desc);
total_size = (len > pagesize)
? pagesize * (1 + (len / pagesize))
: pagesize;
if (tsk_write (task, vaddr, buf, len)) {
return len;
}
operms = tsk_getperm (io, task, pageaddr);
if (!tsk_setperm (io, task, pageaddr, total_size, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_COPY)) {
eprintf ("io.mach: Cannot set page perms for %d byte(s) at 0x%08"
PFMT64x"\n", (int)pagesize, (ut64)pageaddr);
return -1;
}
if (!tsk_write (task, vaddr, buf, len)) {
eprintf ("io.mach: Cannot write on memory\n");
len = -1;
}
if (operms) {
if (!tsk_setperm (io, task, pageaddr, total_size, operms)) {
eprintf ("io.mach: Cannot restore page perms\n");
return -1;
}
}
return len;
}
static int mach_write_at(RIO *io, RIOMach *riom, const void *buf, int len, ut64 addr) {
vm_address_t vaddr = addr;
vm_address_t pageaddr;
vm_size_t pagesize;
vm_size_t total_size;
int operms = 0;
task_t task;
if (!riom || len < 1)
return 0;
if (task_is_dead (riom->pid))
return 0;
task = riom->task;
pageaddr = tsk_getpagebase (riom, addr);
pagesize = tsk_pagesize (riom);
if (len > pagesize)
total_size = pagesize * (1 + (len / pagesize));
else
total_size = pagesize;
if (tsk_write (task, vaddr, buf, len))
return len;
operms = tsk_getperm (io, task, pageaddr);
if (!tsk_setperm (io, task, pageaddr, total_size, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_COPY)) {
eprintf ("io.mach: Cannot set page perms for %d bytes at 0x%08"
PFMT64x"\n", (int)pagesize, (ut64)pageaddr);
return -1;
}
if (!tsk_write (task, vaddr, buf, len)) {
eprintf ("io.mach: Cannot write on memory\n");
len = -1;
}
if (operms) {
if (!tsk_setperm (io, task, pageaddr, total_size, operms)) {
eprintf ("io.mach: Cannot restore page perms\n");
return -1;
}
}
return len;
}