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[PATCH 1/2] linux-user: Let sigaction query SIGKILL/SIGSTOP
From: |
Ilya Leoshkevich |
Subject: |
[PATCH 1/2] linux-user: Let sigaction query SIGKILL/SIGSTOP |
Date: |
Tue, 1 Jun 2021 16:55:59 +0200 |
The kernel allows doing this, so let's allow this in qemu as well.
Valgrind relies on this.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
linux-user/signal.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 9016896dcd..bc3431708f 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -851,7 +851,11 @@ int do_sigaction(int sig, const struct target_sigaction
*act,
trace_signal_do_sigaction_guest(sig, TARGET_NSIG);
- if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig ==
TARGET_SIGSTOP) {
+ if (sig < 1 || sig > TARGET_NSIG) {
+ return -TARGET_EINVAL;
+ }
+
+ if (act && (sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)) {
return -TARGET_EINVAL;
}
--
2.31.1