test: (lsfd) add a case for testing bpf-link related columns

Signed-off-by: WanBingjiang <wanbingjiang@webray.com.cn>

diff --git a/tests/expected/lsfd/mkfds-bpf-link b/tests/expected/lsfd/mkfds-bpf-link
new file mode 100644 (file)
index 0000000..a2b5fb5
--- /dev/null
+++ b/tests/expected/lsfd/mkfds-bpf-link
@@ -0,0 +1,4 @@
+cgroup 3
+BPF-LINK.TYPE,BPF-LINK.TYPE.RAW: 0
+comparing ids: OK
+comparing prog ids: OK

diff --git a/tests/expected/lsfd/mkfds-bpf-link.err b/tests/expected/lsfd/mkfds-bpf-link.err
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/tests/ts/lsfd/mkfds-bpf-link b/tests/ts/lsfd/mkfds-bpf-link
new file mode 100755 (executable)
index 0000000..68fbcb2
--- /dev/null
+++ b/tests/ts/lsfd/mkfds-bpf-link
@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+#
+# Copyright (C) 2026 WanBingjiang <wanbingjiang@webray.com.cn>
+#
+# This file is part of util-linux.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+TS_TOPDIR="${0%/*}/../.."
+TS_DESC="bpf-link files"
+
+. "$TS_TOPDIR"/functions.sh
+ts_init "$*"
+ts_skip_nonroot
+ts_skip_docker
+
+. "$TS_SELF/lsfd-functions.bash"
+ts_check_test_command "$TS_CMD_LSFD"
+ts_check_test_command "$TS_HELPER_MKFDS"
+lsfd_check_mkfds_factory bpf-link
+
+ts_cd "$TS_OUTDIR"
+
+PID=
+ID=
+PROG_ID=
+FD=3
+RC=
+
+{
+    coproc MKFDS { "$TS_HELPER_MKFDS" bpf-link "$FD"; }
+    if read -r -u "${MKFDS[0]}" PID ID PROG_ID; then
+       "${TS_CMD_LSFD}" -r -n -oBPF-LINK.TYPE,BPF-LINK.TYPE.RAW -p "${PID}" -Q "(FD == $FD)"
+       echo "BPF-LINK.TYPE,BPF-LINK.TYPE.RAW": $?
+
+       ID_0=$("${TS_CMD_LSFD}" -r -n -oBPF-LINK.ID -p "${PID}" -Q "(FD == $FD)")
+       if [[ "${ID_0}" == "${ID}" ]]; then
+           echo "comparing ids": OK
+       else
+           echo "comparing ids": FAILED "ID_0:${ID_0} == ID:${ID}"
+       fi
+
+       PROG_ID_0=$("${TS_CMD_LSFD}" -r -n -oBPF-LINK.PROG-ID -p "${PID}" -Q "(FD == $FD)")
+       if [[ "${PROG_ID_0}" == "${PROG_ID}" ]]; then
+           echo "comparing prog ids": OK
+       else
+           echo "comparing prog ids": FAILED "PROG_ID_0:${PROG_ID_0} == PROG_ID:${PROG_ID}"
+       fi
+
+       echo DONE >&"${MKFDS[1]}"
+    fi
+    wait "${MKFDS_PID}"
+    RC=$?
+} > "$TS_OUTPUT" 2>&1
+
+if [ "$RC" == "$TS_EXIT_NOTSUPP" ]; then
+    ts_skip "bpf(2) is not available"
+fi
+
+ts_finalize