C++ (Cpp) sys_rt_sigqueueinfo Examples

Example #1

File: restorer.c Project: kunalkushwaha/crtools

static int restore_signals(siginfo_t *ptr, int nr, bool group)
{
	int ret, i;
	k_rtsigset_t to_block;

	ksigfillset(&to_block);
	ret = sys_sigprocmask(SIG_SETMASK, &to_block, NULL, sizeof(k_rtsigset_t));
	if (ret) {
		pr_err("Unable to block signals %d", ret);
		return -1;
	}

	for (i = 0; i < nr; i++) {
		siginfo_t *info = ptr + i;

		pr_info("Restore signal %d group %d\n", info->si_signo, group);
		if (group)
			ret = sys_rt_sigqueueinfo(sys_getpid(), info->si_signo, info);
		else
			ret = sys_rt_tgsigqueueinfo(sys_getpid(),
						sys_gettid(), info->si_signo, info);
		if (ret) {
			pr_err("Unable to send siginfo %d %x with code %d\n",
					info->si_signo, info->si_code, ret);
			return -1;;
		}
	}

	return 0;
}

Example #2

File: signal32.c Project: FatSunHYS/OSCourseDesign

asmlinkage int sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
{
	siginfo_t info;
	int ret;
	mm_segment_t old_fs = get_fs();

	if (copy_from_user (&info, uinfo, 3*sizeof(int)) ||
	    copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE))
		return -EFAULT;
	set_fs (KERNEL_DS);
	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
	set_fs (old_fs);
	return ret;
}

Example #3

File: compat_signal.c Project: DirtyDroidX/android_kernel_htc_m8ul

long compat_sys_rt_sigqueueinfo(int pid, int sig,
				struct compat_siginfo __user *uinfo)
{
	siginfo_t info;
	int ret;
	mm_segment_t old_fs = get_fs();

	if (copy_siginfo_from_user32(&info, uinfo))
		return -EFAULT;
	set_fs(KERNEL_DS);
	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force __user *)&info);
	set_fs(old_fs);
	return ret;
}

Example #4

File: restorer.c Project: rmoorman/criu

static int restore_signals(siginfo_t *ptr, int nr, bool group)
{
	int ret, i;

	for (i = 0; i < nr; i++) {
		siginfo_t *info = ptr + i;

		pr_info("Restore signal %d group %d\n", info->si_signo, group);
		if (group)
			ret = sys_rt_sigqueueinfo(sys_getpid(), info->si_signo, info);
		else
			ret = sys_rt_tgsigqueueinfo(sys_getpid(),
						sys_gettid(), info->si_signo, info);
		if (ret) {
			pr_err("Unable to send siginfo %d %x with code %d\n",
					info->si_signo, info->si_code, ret);
			return -1;;
		}
	}

	return 0;
}

Example #5

File: cr-check.c Project: Open-Party/criu

static int check_sigqueuinfo()
{
	int ret;
	siginfo_t info = { .si_code = 1 };

	signal(SIGUSR1, SIG_IGN);

	ret = sys_rt_sigqueueinfo(getpid(), SIGUSR1, &info);
	if (ret < 0) {
		errno = -ret;
		pr_perror("Unable to send siginfo with positive si_code to itself");
		return -1;
	}

	return 0;
}

static pid_t fork_and_ptrace_attach(int (*child_setup)(void))
{
	pid_t pid;
	int sk_pair[2], sk;
	char c = 0;

	if (socketpair(PF_LOCAL, SOCK_SEQPACKET, 0, sk_pair)) {
		pr_perror("socketpair");
		return -1;
	}

	pid = fork();
	if (pid < 0) {
		pr_perror("fork");
		return -1;
	} else if (pid == 0) {
		sk = sk_pair[1];
		close(sk_pair[0]);

		if (child_setup && child_setup() != 0)
			exit(1);

		if (write(sk, &c, 1) != 1) {
			pr_perror("write");
			exit(1);
		}

		while (1)
			sleep(1000);
		exit(1);
	}

	sk = sk_pair[0];
	close(sk_pair[1]);

	if (read(sk, &c, 1) != 1) {
		close(sk);
		kill(pid, SIGKILL);
		pr_perror("read");
		return -1;
	}

	close(sk);

	if (ptrace(PTRACE_ATTACH, pid, NULL, NULL) == -1) {
		pr_perror("Unable to ptrace the child");
		kill(pid, SIGKILL);
		return -1;
	}

	waitpid(pid, NULL, 0);

	return pid;
}