Merge branch 'main' into find2fdfind2fd

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/posix/readdir_error.sh b/tests/posix/readdir_error.sh
new file mode 100644
index 0000000..82fcd17
--- /dev/null
+++ b/tests/posix/readdir_error.sh
@@ -0,0 +1,37 @@
+test "$UNAME" = "Linux" || skip
+
+cd "$TEST"
+mkfifo hang pid wait running
+
+(
+    # Create a zombie process
+    cat hang >/dev/null &
+    # Write the PID to pid
+    echo $! >pid
+    # Don't wait on the zombie process
+    exec cat wait hang >running
+) &
+
+# Kill the parent cat on exit
+defer kill -9 %1
+
+# Read the child PID
+read -r pid <pid
+
+# Make sure the parent cat is running before we kill the child, because bash
+# will wait() on its children
+echo >wait &
+read -r _ <running
+
+# Turn the child into a zombie
+kill -9 "$pid"
+
+# Wait until it's really a zombie
+state=R
+while [ "$state" != "Z" ]; do
+    read -r _ _ state _ <"/proc/$pid/stat"
+done
+
+# On Linux, open(/proc/$pid/net) will succeed but readdir() will fail
+test -r "/proc/$pid/net" || skip
+! invoke_bfs "/proc/$pid/net" >/dev/null