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#include <unistd.h> | |
#include <mach/mach.h> | |
#include <mach/mach_vm.h> | |
#include <mach-o/dyld.h> | |
int | |
main (int argc, char * argv[]) | |
{ | |
volatile char * library; | |
const mach_vm_size_t page_size = getpagesize (); | |
const mach_vm_size_t buffer_size = 3 * page_size; | |
char buffer[buffer_size]; | |
mach_vm_size_t result_size; | |
library = (char *) _dyld_get_image_header (1); | |
mach_vm_protect (mach_task_self (), (mach_vm_address_t) (library + page_size), page_size, FALSE, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_COPY | VM_PROT_EXECUTE); | |
library[page_size]++; | |
library[page_size]--; | |
result_size = 0; | |
mach_vm_read_overwrite (mach_task_self (), (mach_vm_address_t) library, buffer_size, (mach_vm_address_t) buffer, &result_size); | |
return 0; | |
} |
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