1 files changed, 21 insertions, 0 deletions
diff --git a/internal/syscallcompat/helpers.go b/internal/syscallcompat/helpers.go
new file mode 100644
index 0000000..e2a2215
--- /dev/null
+++ b/internal/syscallcompat/helpers.go
@@ -0,0 +1,21 @@
+package syscallcompat
+
+import (
+	"os"
+	"syscall"
+)
+
+// IsENOSPC tries to find out if "err" is a (potentially wrapped) ENOSPC error.
+func IsENOSPC(err error) bool {
+	// syscallcompat.EnospcPrealloc returns the naked syscall error
+	if err == syscall.ENOSPC {
+		return true
+	}
+	// os.File.WriteAt returns &PathError
+	if err2, ok := err.(*os.PathError); ok {
+		if err2.Err == syscall.ENOSPC {
+			return true
+		}
+	}
+	return false
+}