From 57615945e6796950e7095a3ee8a97651ae3f1bd9 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Sat, 6 Jun 2026 10:12:57 +0300 Subject: test: add coverage for mknodat and ioprio_get/ioprio_set Add end-to-end integration scenarios and tests for two previously untested syscalls: - mknodat(2): new dir-mknodat-fifo scenario creates an unprivileged FIFO node (S_IFIFO, no CAP_MKNOD) via unix.Mknodat under AT_FDCWD and unlinks it. TestDirMknodatFifo asserts enter_mknodat fires with pathname@args[1] (after dirfd@args[0]), proven by a PathContains match on the distinct fifo name, mirroring the mkdirat coverage. - ioprio_get(2)/ioprio_set(2): new ioprio-basic scenario (the I/O-priority analogues of getpriority/setpriority) issues the raw syscalls (no x/sys wrapper exists), reading the current self I/O priority and re-applying it, or a harmless unprivileged best-effort value when none is set. TestIoprioBasic asserts enter_ioprio_get and enter_ioprio_set fire (null enters, UNCLASSIFIED ret), mirroring priority-basic. Realtime class is deliberately avoided as it needs CAP_SYS_ADMIN. Co-Authored-By: Claude Opus 4.8 --- integrationtests/dir_test.go | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'integrationtests/dir_test.go') diff --git a/integrationtests/dir_test.go b/integrationtests/dir_test.go index d759abd..bbcc3fe 100644 --- a/integrationtests/dir_test.go +++ b/integrationtests/dir_test.go @@ -24,6 +24,22 @@ func TestDirMkdirat(t *testing.T) { }) } +// TestDirMknodatFifo verifies mknodat(2) is traced end-to-end. The +// dir-mknodat-fifo workload creates an unprivileged FIFO node under AT_FDCWD, +// so enter_mknodat fires with pathname@args[1] (after dirfd@args[0]). Matching +// the distinct fifo name via PathContains proves the args[1] capture, mirroring +// the mkdirat coverage above. +func TestDirMknodatFifo(t *testing.T) { + runScenario(t, "dir-mknodat-fifo", []ExpectedEvent{ + { + PathContains: "mknodat-fifo", + Tracepoint: "enter_mknodat", + Comm: "ioworkload", + MinCount: 1, + }, + }) +} + func TestDirChdir(t *testing.T) { runScenario(t, "dir-chdir", []ExpectedEvent{ { -- cgit v1.2.3