The reason is what if tsk is no longer available when you call
getrusage?
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of
> Claudio Scordino
> Sent: Thursday, November 10, 2005 2:34 PM
> To: [email protected]; [email protected]
> Subject: [PATCH] getrusage sucks
>
> Does exist any _real_ reason why getrusage can't be invoked
> by a task to know
> statistics of another task ?
>
> The changes would be very trivial, as shown by the following patch.
>
> Claudio
>
>
> diff --git a/kernel/sys.c b/kernel/sys.c
> --- a/kernel/sys.c
> +++ b/kernel/sys.c
> @@ -1746,9 +1746,13 @@ int getrusage(struct task_struct *p, int
>
> asmlinkage long sys_getrusage(int who, struct rusage __user *ru)
> {
> - if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
> - return -EINVAL;
> - return getrusage(current, who, ru);
> + if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) {
> + struct task_struct* tsk = find_task_by_pid(who);
> + if (tsk == NULL)
> + return -EINVAL;
> + return getrusage(tsk, RUSAGE_SELF, ru);
> + } else
> + return getrusage(current, who, ru);
> }
>
> asmlinkage long sys_umask(int mask)
> -
> To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
