litmus-rt.git - The LITMUS^RT kernel.

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The LITMUS^RT kernel.

Bjoern Brandenburg

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arch/ia64/include/asm/types.h

1 files changed, 5 insertions, 5 deletions

 typedef unsigned int umode_t;
-struct fnptr {
-        unsigned long ip;
-        unsigned long gp;
-};
 /*
  * These aren't exported outside the kernel to avoid name space clashes
  */
 # ifdef __KERNEL__
+struct fnptr {
+        unsigned long ip;
+        unsigned long gp;
+};
 /* DMA addresses are 64-bits wide, in general.  */
 typedef u64 dma_addr_t;

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/*
 *  linux/kernel/compat.c
 *
 *  Kernel compatibililty routines for e.g. 32 bit syscall support
 *  on 64 bit kernels.
 *
 *  Copyright (C) 2002-2003 Stephen Rothwell, IBM Corporation
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 */

#include <linux/linkage.h>
#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/signal.h>
#include <linux/sched.h>	/* for MAX_SCHEDULE_TIMEOUT */
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/security.h>
#include <linux/timex.h>
#include <linux/migrate.h>
#include <linux/posix-timers.h>

#include <asm/uaccess.h>

int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
{
	return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
			__get_user(ts->tv_sec, &cts->tv_sec) ||
			__get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}

int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
{
	return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
			__put_user(ts->tv_sec, &cts->tv_sec) ||
			__put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}

static long compat_nanosleep_restart(struct restart_block *restart)
{
	struct compat_timespec __user *rmtp;
	struct timespec rmt;
	mm_segment_t oldfs;
	long ret;

	restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
	oldfs = get_fs();
	set_fs(KERNEL_DS);
	ret = hrtimer_nanosleep_restart(restart);
	set_fs(oldfs);

	if (ret) {
		rmtp = restart->nanosleep.compat_rmtp;

		if (rmtp && put_compat_timespec(&rmt, rmtp))
			return -EFAULT;
	}

	return ret;
}

asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
				     struct compat_timespec __user *rmtp)
{
	struct timespec tu, rmt;
	mm_segment_t oldfs;
	long ret;

	if (get_compat_timespec(&tu, rqtp))
		return -EFAULT;

	if (!timespec_valid(&tu))
		return -EINVAL;

	oldfs = get_fs();
	set_fs(KERNEL_DS);
	ret = hrtimer_nanosleep(&tu,
				rmtp ? (struct timespec __user *)&rmt : NULL,
				HRTIMER_MODE_REL, CLOCK_MONOTONIC);
	set_fs(oldfs);

	if (ret) {
		struct restart_block *restart
			= &current_thread_info()->restart_block;

		restart->fn = compat_nanosleep_restart;
		restart->nanosleep.compat_rmtp = rmtp;

		if (rmtp && put_compat_timespec(&rmt, rmtp))
			return -EFAULT;
	}

	return ret;
}

static inline long get_compat_itimerval(struct itimerval *o,
		struct compat_itimerval __user *i)
{
	return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
		(__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
		 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
		 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
		 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
}

static inline long put_compat_itimerval(struct compat_itimerval __user *o,
		struct itimerval *i)
{
	return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
		(__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
		 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
		 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
		 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
}

asmlinkage long compat_sys_getitimer(int which,
		struct compat_itimerval __user *it)
{
	struct itimerval kit;
	int error;

	error = do_getitimer(which, &kit);
	if (!error && put_compat_itimerval(it, &kit))
		error = -EFAULT;
	return error;
}

asmlinkage long compat_sys_setitimer(int which,
		struct compat_itimerval __user *in,
		struct compat_itimerval __user *out)
{
	struct itimerval kin, kout;
	int error;

	if (in) {
		if (get_compat_itimerval(&kin, in))
			return -EFAULT;
	} else
		memset(&kin, 0, sizeof(kin));

	error = do_setitimer(which, &kin, out ? &kout : NULL);
	if (error || !out)
		return error;
	if (put_compat_itimerval(out, &kout))
		return -EFAULT;
	return 0;
}

asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
{
	/*
	 *	In the SMP world we might just be unlucky and have one of
	 *	the times increment as we use it. Since the value is an
	 *	atomically safe type this is just fine. Conceptually its
	 *	as if the syscall took an instant longer to occur.
	 */
	if (tbuf) {
		struct compat_tms tmp;
		struct task_struct *tsk = current;
		struct task_struct *t;
		cputime_t utime, stime, cutime, cstime;

		read_lock(&tasklist_lock);
		utime = tsk->signal->utime;
		stime = tsk->signal->stime;
		t = tsk;
		do {
			utime = cputime_add(utime, t->utime);
			stime = cputime_add(stime, t->stime);
			t = next_thread(t);
		} while (t != tsk);

		/*
		 * While we have tasklist_lock read-locked, no dying thread
		 * can be updating current->signal->[us]time.  Instead,
		 * we got their counts included in the live thread loop.
		 * However, another thread can come in right now and
		 * do a wait call that updates current->signal->c[us]time.
		 * To make sure we always see that pair updated atomically,
		 * we take the siglock around fetching them.
		 */
		spin_lock_irq(&tsk->sighand->siglock);
		cutime = tsk->signal->cutime;
		cstime = tsk->signal->cstime;
		spin_unlock_irq(&tsk->sighand->siglock);
		read_unlock(&tasklist_lock);

		tmp.tms_utime = compat_jiffies_to_clock_t(cputime_to_jiffies(utime));
		tmp.tms_stime = compat_jiffies_to_clock_t(cputime_to_jiffies(stime));
		tmp.tms_cutime = compat_jiffies_to_clock_t(cputime_to_jiffies(cutime));
		tmp.tms_cstime = compat_jiffies_to_clock_t(cputime_to_jiffies(cstime));
		if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
			return -EFAULT;
	}
	return compat_jiffies_to_clock_t(jiffies);
}

/*
 * Assumption: old_sigset_t and compat_old_sigset_t are both
 * types that can be passed to put_user()/get_user().
 */

asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
{
	old_sigset_t s;
	long ret;
	mm_segment_t old_fs = get_fs();

	set_fs(KERNEL_DS);
	ret = sys_sigpending((old_sigset_t __user *) &s);
	set_fs(old_fs);
	if (ret == 0)
		ret = put_user(s, set);
	return ret;
}

asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
		compat_old_sigset_t __user *oset)
{
	old_sigset_t s;


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