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#include <sys/ptrace.h>
#include <stdarg.h>
#include <errno.h>
#include <bits/ensure.h>
#include <mlibc/debug.hpp>
#include <mlibc/linux-sysdeps.hpp>
long ptrace(int req, ...) {
va_list ap;
va_start(ap, req);
auto pid = va_arg(ap, pid_t);
auto addr = va_arg(ap, void *);
auto data = va_arg(ap, void *);
va_end(ap);
long ret;
if(req > 0 && req < 4) {
data = &ret;
}
MLIBC_CHECK_OR_ENOSYS(mlibc::sys_ptrace, -1);
long out;
if(int e = mlibc::sys_ptrace(req, pid, addr, data, &out); e) {
errno = e;
return -1;
} else if(req > 0 && req < 4) {
errno = 0;
return ret;
}
return out;
}
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