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[PATCH] lightweight robust futexes: compat

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32-bit syscall compatibility support.  (This patch also moves all futex
related compat functionality into kernel/futex_compat.c.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar
2006-03-27 01:16:24 -08:00
committed by Linus Torvalds
parent 2eec9ad91f
commit 34f192c652
6 changed files with 171 additions and 23 deletions
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23
kernel/compat.c
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@@ -17,7 +17,6 @@
#include <linux/time.h>
#include <linux/signal.h>
#include <linux/sched.h> /* for MAX_SCHEDULE_TIMEOUT */
#include <linux/futex.h> /* for FUTEX_WAIT */
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/security.h>
@@ -239,28 +238,6 @@ asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
return ret;
}
#ifdef CONFIG_FUTEX
asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, int val,
struct compat_timespec __user *utime, u32 __user *uaddr2,
int val3)
{
struct timespec t;
unsigned long timeout = MAX_SCHEDULE_TIMEOUT;
int val2 = 0;
if ((op == FUTEX_WAIT) && utime) {
if (get_compat_timespec(&t, utime))
return -EFAULT;
timeout = timespec_to_jiffies(&t) + 1;
}
if (op >= FUTEX_REQUEUE)
val2 = (int) (unsigned long) utime;
return do_futex((unsigned long)uaddr, op, val, timeout,
(unsigned long)uaddr2, val2, val3);
}
#endif
asmlinkage long compat_sys_setrlimit(unsigned int resource,
struct compat_rlimit __user *rlim)
{