diff mbox

[01/19] linux-user: fix settime old value location

Message ID 20161201051433.17168-2-bobby.prani@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Pranith Kumar Dec. 1, 2016, 5:14 a.m. UTC
From: Marc-André Lureau <marcandre.lureau@redhat.com>

old_value is the 4th argument of timer_settime(), not the 2nd.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
---
 linux-user/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Alex Bennée Dec. 9, 2016, 5:01 p.m. UTC | #1
Pranith Kumar <bobby.prani@gmail.com> writes:

> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> old_value is the 4th argument of timer_settime(), not the 2nd.
>
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

but this should really be sent in another series.

> ---
>  linux-user/syscall.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index 7b77503..5bd477a 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -12027,7 +12027,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
>              target_to_host_itimerspec(&hspec_new, arg3);
>              ret = get_errno(
>                            timer_settime(htimer, arg2, &hspec_new, &hspec_old));
> -            host_to_target_itimerspec(arg2, &hspec_old);
> +            host_to_target_itimerspec(arg4, &hspec_old);
>          }
>          break;
>      }


--
Alex Bennée
Laurent Vivier Dec. 10, 2016, 11:22 a.m. UTC | #2
Le 01/12/2016 à 06:14, Pranith Kumar a écrit :
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> old_value is the 4th argument of timer_settime(), not the 2nd.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
> ---
>  linux-user/syscall.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index 7b77503..5bd477a 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -12027,7 +12027,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
>              target_to_host_itimerspec(&hspec_new, arg3);
>              ret = get_errno(
>                            timer_settime(htimer, arg2, &hspec_new, &hspec_old));
> -            host_to_target_itimerspec(arg2, &hspec_old);
> +            host_to_target_itimerspec(arg4, &hspec_old);
>          }
>          break;
>      }
> 

arg4 can be NULL.

You should check for the return value like in timerfd_settime.

In the kernel we have:

	if (old_setting && !error &&
	    copy_to_user(old_setting, &old_spec, sizeof (old_spec)))
		error = -EFAULT;

Laurent
diff mbox

Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7b77503..5bd477a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -12027,7 +12027,7 @@  abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             target_to_host_itimerspec(&hspec_new, arg3);
             ret = get_errno(
                           timer_settime(htimer, arg2, &hspec_new, &hspec_old));
-            host_to_target_itimerspec(arg2, &hspec_old);
+            host_to_target_itimerspec(arg4, &hspec_old);
         }
         break;
     }