int
ui_loop(void)
{
int child;
int fds[2];
int r;
Char buf[16];
Char *args[7] = { (Char *)"ppres/driver/UI",
"+RTS",
"-p",
"-xc",
"-RTS",
buf,
NULL };
r = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
if (r < 0)
VG_(tool_panic)((Char *)"Error creating socket pair");
child = my_fork();
if (child == 0) {
struct vki_sigaction_base sa;
VG_(close)(fds[1]);
/* We're going to be doing a lot more forking, and
don't want lots of zombies hanging around. Child
crash is detected when a control socket closes
unexpectedly. */
VG_(memset)(&sa, 0, sizeof(sa));
sa.ksa_handler = VKI_SIG_IGN;
sa.sa_flags = 3; /* SA_NOCLDSTOP|SA_NOCLDWAIT */
my_sigaction(VKI_SIGCHLD, &sa, NULL);
return fds[0];
}
VG_(close)(fds[0]);
VG_(sprintf)(buf, "%d", fds[1]);
VG_(execv)(args[0], args);
VG_(tool_panic)((Char *)"Cannot exec driver!");
}
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
{
return my_sigaction(signum, act, oldact);
}
int LIBC_SIGACTION(int signum, const struct sigaction *act, struct sigaction *oldact)
{
return my_sigaction(signum, act, oldact);
}