1 files changed, 47 insertions, 0 deletions
diff --git a/vendor/github.com/cilium/ebpf/internal/errors.go b/vendor/github.com/cilium/ebpf/internal/errors.go
new file mode 100644
index 000000000..b6aee81f7
--- /dev/null
+++ b/vendor/github.com/cilium/ebpf/internal/errors.go
@@ -0,0 +1,47 @@
+package internal
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/cilium/ebpf/internal/unix"
+)
+
+// ErrorWithLog returns an error that includes logs from the
+// kernel verifier.
+//
+// logErr should be the error returned by the syscall that generated
+// the log. It is used to check for truncation of the output.
+func ErrorWithLog(err error, log []byte, logErr error) error {
+	logStr := strings.Trim(CString(log), "\t\r\n ")
+	if errors.Is(logErr, unix.ENOSPC) {
+		logStr += " (truncated...)"
+	}
+
+	return &VerifierError{err, logStr}
+}
+
+// VerifierError includes information from the eBPF verifier.
+type VerifierError struct {
+	cause error
+	log   string
+}
+
+func (le *VerifierError) Error() string {
+	if le.log == "" {
+		return le.cause.Error()
+	}
+
+	return fmt.Sprintf("%s: %s", le.cause, le.log)
+}
+
+// CString turns a NUL / zero terminated byte buffer into a string.
+func CString(in []byte) string {
+	inLen := bytes.IndexByte(in, 0)
+	if inLen == -1 {
+		return ""
+	}
+	return string(in[:inLen])
+}