From: Oleg Nesterov <oleg@redhat.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Petr Skocik <pskocik@gmail.com>,
Kees Cook <keescook@chromium.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Marco Elver <elver@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] signal: Fix the error return of kill -1
Date: Mon, 14 Aug 2023 17:43:51 +0200 [thread overview]
Message-ID: <20230814154351.GA4203@redhat.com> (raw)
In-Reply-To: <20230814140652.GA30596@redhat.com>
On 08/14, Oleg Nesterov wrote:
>
> Why do we need the "bool found" variable ? Afacis
>
> } else {
> bool success = false;
> int retval = -ESRCH;
> struct task_struct * p;
>
> for_each_process(p) {
> if (task_pid_vnr(p) > 1 &&
> !same_thread_group(p, current)) {
> int err = group_send_sig_info(sig, info, p,
> PIDTYPE_MAX);
> success |= !err;
> retval = err;
> }
> }
> ret = success ? 0 : retval;
> }
>
> does the same?
Even simpler
} else {
struct task_struct * p;
bool success = false;
int err = -ESRCH;
for_each_process(p) {
if (task_pid_vnr(p) > 1 &&
!same_thread_group(p, current)) {
err = group_send_sig_info(sig, info, p,
PIDTYPE_MAX);
success |= !err;
}
}
ret = success ? 0 : err;
}
unless I missed something...
Oleg.
next prev parent reply other threads:[~2023-08-14 15:46 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 16:12 [PATCH 0/1] *** Fix kill(-1,s) returning 0 on 0 kills *** Petr Skocik
2022-11-22 16:12 ` [PATCH 1/1] Fix kill(-1,s) returning 0 on 0 kills Petr Skocik
2022-11-23 10:30 ` Oleg Nesterov
2022-11-23 11:20 ` Oleg Nesterov
2022-11-23 11:27 ` Petr Skocik
2022-11-23 11:56 ` Oleg Nesterov
2022-11-22 17:15 ` [PATCH 0/1] *** Fix kill(-1,s) returning 0 on 0 kills *** Kees Cook
2022-11-22 23:01 ` Petr Skocik
2023-08-09 12:27 ` Petr Skocik
2023-08-10 16:16 ` Eric W. Biederman
2023-08-10 21:30 ` Petr Skocik
2023-08-11 21:25 ` Eric W. Biederman
2023-08-11 22:16 ` [PATCH] signal: Fix the error return of kill -1 Eric W. Biederman
2023-08-14 14:06 ` Oleg Nesterov
2023-08-14 15:43 ` Oleg Nesterov [this message]
2023-08-15 14:47 ` David Laight
2023-08-15 15:11 ` Oleg Nesterov
2023-08-16 20:32 ` Eric W. Biederman
2023-08-16 21:06 ` Oleg Nesterov
2023-08-17 2:33 ` Eric W. Biederman
2023-08-17 4:37 ` Eric W. Biederman
2023-08-17 15:47 ` [PATCH] __kill_pgrp_info: simplify the calculation of return value Oleg Nesterov
2023-08-11 23:37 ` [PATCH 0/1] *** Fix kill(-1,s) returning 0 on 0 kills *** Petr Skocik
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