From 532dec0849dcdc3e15e530ac40a8168f146a41cd Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 4 Feb 2025 11:18:34 -0500
Subject: tests/posix/exec_sigmask: Make portable

The test was Linux-only, and didn't pass on at least mips64el due to a
different signal mask size.  The new version should be fully portable,
but will hang forever on failure.

Link: https://buildd.debian.org/status/fetch.php?pkg=bfs&arch=mips64el&ver=4.0.5-1&stamp=1737761227&raw=0
---
 tests/posix/exec_sigmask.sh | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/tests/posix/exec_sigmask.sh b/tests/posix/exec_sigmask.sh
index e01c05e..d1192a4 100644
--- a/tests/posix/exec_sigmask.sh
+++ b/tests/posix/exec_sigmask.sh
@@ -1,4 +1,16 @@
 # Regression test: restore the signal mask after fork()
 
-test "$UNAME" = "Linux" || skip
-bfs_diff /proc/self/status -exec grep '^SigBlk:' {} +
+cd "$TEST"
+mkfifo p1 p2
+
+{
+    # Get the PID of `sh`
+    read -r pid <p1
+    # Send SIGTERM -- this will hang forever if signals are blocked
+    kill $pid
+} &
+
+# Write the `sh` PID to p1, then hang reading p2 until we're killed
+! invoke_bfs p1 -exec sh -c 'echo $$ >p1 && read -r _ <p2' {} + || fail
+
+wait
-- 
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