Add getcwd tracing support and stabilize comm propagation test

3 files changed, 39 insertions, 0 deletions

diff --git a/internal/generate/classify.go b/internal/generate/classify.go
index ae03758..a7d9847 100644
--- a/internal/generate/classify.go
+++ b/internal/generate/classify.go
@@ -115,6 +115,8 @@ func classifyNameOnly(name string) (ClassificationResult, bool) {
 		return ClassificationResult{Kind: KindNull}, true
 	case "sys_enter_msync":
 		return ClassificationResult{Kind: KindNull}, true
+	case "sys_enter_getcwd":
+		return ClassificationResult{Kind: KindNull}, true
 	}
 	if strings.HasPrefix(name, "sys_enter_io_") {
 		return ClassificationResult{Kind: KindNull}, true
diff --git a/internal/generate/classify_test.go b/internal/generate/classify_test.go
index 8d6f9c2..b223210 100644
--- a/internal/generate/classify_test.go
+++ b/internal/generate/classify_test.go
@@ -160,6 +160,13 @@ func TestClassifyNullSyslog(t *testing.T) {
 	}
 }
 
+func TestClassifyNullGetcwd(t *testing.T) {
+	r := classifyFromData(t, FormatGetcwd)
+	if r.Kind != KindNull {
+		t.Errorf("getcwd: got kind %d, want KindNull", r.Kind)
+	}
+}
+
 func TestClassifyNullIoUring(t *testing.T) {
 	r := classifyFromData(t, FormatIoUringEnter)
 	if r.Kind != KindFd {
@@ -300,6 +307,7 @@ func TestClassifySyscallPairAccepted(t *testing.T) {
 		{"fcntl", FormatFcntl, FormatExitFcntl, KindFcntl},
 		{"sync", FormatSync, FormatExitSync, KindNull},
 		{"msync", FormatMsync, FormatExitMsync, KindNull},
+		{"getcwd", FormatGetcwd, FormatExitGetcwd, KindNull},
 		{"copy_file_range", FormatCopyFileRange, FormatExitCopyFileRange, KindFd},
 		{"syslog", FormatSyslog, FormatExitSyslog, KindNull},
 		{"open_by_handle_at", FormatOpenByHandleAt, FormatExitOpenByHandleAt, KindOpenByHandleAt},
diff --git a/internal/generate/testdata.go b/internal/generate/testdata.go
index fb68dfb..a141a49 100644
--- a/internal/generate/testdata.go
+++ b/internal/generate/testdata.go
@@ -425,6 +425,35 @@ format:
 print fmt: "0x%lx", REC->ret
 `
 
+const FormatGetcwd = `name: sys_enter_getcwd
+ID: 795
+format:
+	field:unsigned short common_type;	offset:0;	size:2;	signed:0;
+	field:unsigned char common_flags;	offset:2;	size:1;	signed:0;
+	field:unsigned char common_preempt_count;	offset:3;	size:1;	signed:0;
+	field:int common_pid;	offset:4;	size:4;	signed:1;
+
+	field:int __syscall_nr;	offset:8;	size:4;	signed:1;
+	field:char * buf;	offset:16;	size:8;	signed:0;
+	field:unsigned long size;	offset:24;	size:8;	signed:0;
+
+print fmt: "buf: 0x%08lx, size: 0x%08lx", ((unsigned long)(REC->buf)), ((unsigned long)(REC->size))
+`
+
+const FormatExitGetcwd = `name: sys_exit_getcwd
+ID: 794
+format:
+	field:unsigned short common_type;	offset:0;	size:2;	signed:0;
+	field:unsigned char common_flags;	offset:2;	size:1;	signed:0;
+	field:unsigned char common_preempt_count;	offset:3;	size:1;	signed:0;
+	field:int common_pid;	offset:4;	size:4;	signed:1;
+
+	field:int __syscall_nr;	offset:8;	size:4;	signed:1;
+	field:long ret;	offset:16;	size:8;	signed:1;
+
+print fmt: "0x%lx", REC->ret
+`
+
 const FormatSyslog = `name: sys_enter_syslog
 ID: 347
 format: