pidfd: change pidfd_send_signal() to respect PIDFD_THREAD

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Turn kill_pid_info() into kill_pid_info_type(), this allows to pass any
pid_type to group_send_sig_info(), despite its name it should work fine
even if type = PIDTYPE_PID.

Change pidfd_send_signal() to use PIDTYPE_PID or PIDTYPE_TGID depending
on PIDFD_THREAD.

While at it kill another TODO comment in pidfd_show_fdinfo(). As Christian
expains fdinfo reports f_flags, userspace can already detect PIDFD_THREAD.

Reviewed-by: Tycho Andersen <tandersen@netflix.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240209130650.GA8048@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Oleg Nesterov 2024-02-09 14:06:50 +01:00 • committed by Christian Brauner

parent c044a95026

commit 81b9d8ac06

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2 changed files with 23 additions and 18 deletions

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2

kernel/fork.c

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39

kernel/signal.c

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