Exemplo n.º 1
0
asmlinkage long
sys32_waitid(int which, compat_pid_t pid,
	     compat_siginfo_t __user *uinfo, int options,
	     struct compat_rusage __user *uru)
{
	siginfo_t info;
	struct rusage ru;
	long ret;
	mm_segment_t old_fs = get_fs();

	info.si_signo = 0;
	set_fs (KERNEL_DS);
	ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
			 uru ? (struct rusage __user *) &ru : NULL);
	set_fs (old_fs);

	if (ret < 0 || info.si_signo == 0)
		return ret;

	if (uru && (ret = put_compat_rusage(&ru, uru)))
		return ret;

	BUG_ON(info.si_code & __SI_MASK);
	info.si_code |= __SI_CHLD;
	return copy_siginfo_to_user32(uinfo, &info);
}
Exemplo n.º 2
0
asmlinkage long
compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
	struct compat_rusage __user *ru)
{
	if (!ru) {
		return sys_wait4(pid, stat_addr, options, NULL);
	} else {
		struct rusage r;
		int ret;
		unsigned int status;
		mm_segment_t old_fs = get_fs();

		set_fs (KERNEL_DS);
		ret = sys_wait4(pid,
				(stat_addr ?
				 (unsigned int __user *) &status : NULL),
				options, (struct rusage __user *) &r);
		set_fs (old_fs);

		if (ret > 0) {
			if (put_compat_rusage(&r, ru))
				return -EFAULT;
			if (stat_addr && put_user(status, stat_addr))
				return -EFAULT;
		}
		return ret;
	}
}
Exemplo n.º 3
0
COMPAT_SYSCALL_DEFINE5(waitid,
		int, which, compat_pid_t, pid,
		struct compat_siginfo __user *, uinfo, int, options,
		struct compat_rusage __user *, uru)
{
	siginfo_t info;
	struct rusage ru;
	long ret;
	mm_segment_t old_fs = get_fs();

	memset(&info, 0, sizeof(info));

	set_fs(KERNEL_DS);
	ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
			 uru ? (struct rusage __user *)&ru : NULL);
	set_fs(old_fs);

	if ((ret < 0) || (info.si_signo == 0))
		return ret;

	if (uru) {
		/* sys_waitid() overwrites everything in ru */
		if (COMPAT_USE_64BIT_TIME)
			ret = copy_to_user(uru, &ru, sizeof(ru));
		else
			ret = put_compat_rusage(&ru, uru);
		if (ret)
			return -EFAULT;
	}

	BUG_ON(info.si_code & __SI_MASK);
	info.si_code |= __SI_CHLD;
	return copy_siginfo_to_user32(uinfo, &info);
}
Exemplo n.º 4
0
COMPAT_SYSCALL_DEFINE4(wait4,
	compat_pid_t, pid,
	compat_uint_t __user *, stat_addr,
	int, options,
	struct compat_rusage __user *, ru)
{
	if (!ru) {
		return sys_wait4(pid, stat_addr, options, NULL);
	} else {
		struct rusage r;
		int ret;
		unsigned int status;
		mm_segment_t old_fs = get_fs();

		set_fs (KERNEL_DS);
		ret = sys_wait4(pid,
				(stat_addr ?
				 (unsigned int __force_user *) &status : NULL),
				options, (struct rusage __force_user *) &r);
		set_fs (old_fs);

		if (ret > 0) {
			if (put_compat_rusage(&r, ru))
				return -EFAULT;
			if (stat_addr && put_user(status, stat_addr))
				return -EFAULT;
		}
		return ret;
	}
}
Exemplo n.º 5
0
asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
{
	struct rusage r;
	int ret;
	mm_segment_t old_fs = get_fs();

	set_fs(KERNEL_DS);
	ret = sys_getrusage(who, (struct rusage __user *) &r);
	set_fs(old_fs);

	if (ret)
		return ret;

	if (put_compat_rusage(&r, ru))
		return -EFAULT;

	return 0;
}
Exemplo n.º 6
0
asmlinkage long
sysn32_waitid(int which, compat_pid_t pid,
	      siginfo_t __user *uinfo, int options,
	      struct compat_rusage __user *uru)
{
	struct rusage ru;
	long ret;
	mm_segment_t old_fs = get_fs();

	set_fs (KERNEL_DS);
	ret = sys_waitid(which, pid, uinfo, options,
			 uru ? (struct rusage __user *) &ru : NULL);
	set_fs (old_fs);

	if (ret < 0 || uinfo->si_signo == 0)
		return ret;

	if (uru)
		ret = put_compat_rusage(&ru, uru);
	return ret;
}