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signal: Have prepare_signal detect coredumps using signal->core_state

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In preparation for removing the flag SIGNAL_GROUP_COREDUMP, change
prepare_signal to test signal->core_state instead of the flag
SIGNAL_GROUP_COREDUMP.

Both fields are protected by siglock and both live in signal_struct so
there are no real tradeoffs here, just a change to which field is
being tested.

Link: https://lkml.kernel.org/r/20211213225350.27481-1-ebiederm@xmission.com
Link: https://lkml.kernel.org/r/875yqu14co.fsf_-_@email.froward.int.ebiederm.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2022-01-08 09:34:50 -06:00
parent 98b24b16b2
commit a0287db0f1
1 changed files with 2 additions and 2 deletions
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4
kernel/signal.c
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@ -906,8 +906,8 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force)
struct task_struct *t;
sigset_t flush;
if (signal->flags & (SIGNAL_GROUP_EXIT | SIGNAL_GROUP_COREDUMP)) {
if (!(signal->flags & SIGNAL_GROUP_EXIT))
if ((signal->flags & SIGNAL_GROUP_EXIT) || signal->core_state) {
if (signal->core_state)
return sig == SIGKILL;
/*
* The process is in the middle of dying, nothing to do.