/**
* Fork-exec-wait /etc/cerberusrc
*
* @param hook The ID of the hook to run
* @param argc The number of command line arguments
* @param argv The command line arguments
* @return The exit value of the hook
*/
int fork_exec_wait_hook(int hook, int argc, char** argv)
{
pid_t pid, reaped;
int status;
pid = fork();
if (pid == -1)
return -1;
if (pid == 0)
{
close(STDIN_FILENO);
exec_hook(hook, argc, argv);
_exit(138);
}
for (;;)
{
reaped = wait(&status);
if (reaped == -1)
{
perror("wait");
return -1;
}
if (reaped == pid)
return status == 138 ? -1 : status;
}
}
/**
* Mane method
*
* @param argc The number of command line arguments
* @param argv The command line arguments
* @return Return code
*/
int main(int argc, char** argv)
{
char* tty_device = ttyname(STDIN_FILENO);
do_login(argc, argv);
/* Ignore signals */
signal(SIGQUIT, SIG_IGN);
signal(SIGINT, SIG_IGN);
/* Wait for the login shell and all grandchildren to exit */
while ((wait(NULL) == -1) && (errno == EINTR))
;
/* Regain access to the terminal */
if (tty_device)
{
int fd = open(tty_device, O_RDWR | O_NONBLOCK);
if (fd != 0) dup2(fd, 0);
if (fd != 1) dup2(fd, 1);
if (fd != 2) dup2(fd, 2);
}
/* Reset terminal ownership and mode */
chown_tty(0, tty_group, 0);
/* Close login session */
close_login_session();
/* Run logout hook */
exec_hook(HOOK_LOGOUT, argc, argv);
return 0;
}
enum IP_STATUS ip_accept_preparsed(const struct ppam_rx_hash *ctxt,
struct annotations_t *notes,
struct iphdr *ip_hdr,
enum state source)
{
return exec_hook(ctxt, IP_HOOK_PREROUTING, notes, ip_hdr,
&ip_accept_finish, source);
}
static int toilet_flush(const char *path, struct fuse_file_info *fi)
{
int writing;
FIX_PATH(path);
pthread_mutex_lock(&lock);
if (strcmp(path, opened_filename) == 0)
writing = 1;
pthread_mutex_unlock(&lock);
if (writing)
exec_hook(path);
return 0;
}
