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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <authsrv.h>
#include "authcmdlib.h"
/* don't allow other processes to debug us and steal keys */
void
private(void)
{
int fd;
char buf[32];
static char pmsg[] = "Warning! %s can't protect itself from debugging: %r\n";
static char smsg[] = "Warning! %s can't turn off swapping: %r\n";
snprint(buf, sizeof(buf), "/proc/%d/ctl", getpid());
fd = open(buf, OWRITE|OCEXEC);
if(fd < 0){
fprint(2, pmsg, argv0);
return;
}
if(fprint(fd, "private") < 0)
fprint(2, pmsg, argv0);
if(fprint(fd, "noswap") < 0)
fprint(2, smsg, argv0);
close(fd);
}
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