struct proc_process
save_process(pid_t pid,char* name, int nokill)
{
struct proc_process saved_process;
saved_process.name=name;
struct list *chunks=malloc(sizeof(struct list));
list_init(chunks);
long offset;
if (ptrace(PTRACE_ATTACH, pid, NULL, NULL)== -1 && errno) {
perror("error attach"); //TODO ERROR
return saved_process;
}
waitpid(pid,0,0);
#ifdef X32
fetch_chunks_tls(pid, chunks);
#endif
fetch_chunks_vma(pid, chunks, &offset);
fetch_chunks_fd(pid, chunks);
//fetch_chunks_sighand(pid, &chunks);
fetch_chunks_regs(pid,chunks);
if (nokill) {
if (ptrace(PTRACE_CONT, pid, NULL, NULL)== -1 && errno) {
perror("error cont"); //TODO ERROR
return saved_process;
}
} else if (ptrace(PTRACE_KILL, pid, NULL, NULL)== -1 && errno) {
perror("error kill"); //TODO ERROR
return saved_process;
}
saved_process.chunks = chunks;
return saved_process;
}
void get_process(pid_t pid, int flags, struct list *process_image, long *bin_offset)
{
int success = 0;
char* pagebackup;
struct user_regs_struct r;
struct cp_chunk *libcgp;
start_ptrace(pid);
if (save_registers(pid, &r) < 0) {
fprintf(stderr, "Unable to save process's registers!\n");
goto out_ptrace;
}
/* The order below is very important. Do not change without good reason and
* careful thought.
*/
fetch_chunks_tls(pid, flags, process_image);
/* this gives us a scribble zone: */
fetch_chunks_vma(pid, flags, process_image, bin_offset);
if (!scribble_zone) {
fprintf(stderr, "[-] No suitable scribble zone could be found. Aborting.\n");
goto out_ptrace;
}
pagebackup = backup_page(pid, (void*)scribble_zone);
fetch_chunks_fd(pid, flags, process_image);
fetch_chunks_sighand(pid, flags, process_image);
fetch_chunks_i387_data(pid, flags, process_image);
fetch_chunks_regs(pid, flags, process_image, process_was_stopped);
/* add __getpid chunk to the image list, if requested by the user */
if ((flags & REFRESH_PID) && fetch_chunk_libcgp(&libcgp) == 0)
list_append(process_image, libcgp);
success = 1;
restore_page(pid, (void*)scribble_zone, pagebackup);
restore_registers(pid, &r);
out_ptrace:
end_ptrace(pid, flags);
if (!success)
abort();
}