1 files changed, 31 insertions, 0 deletions
diff --git a/tapset/fs.stp b/tapset/fs.stp
new file mode 100644
index 0000000..246fb79
--- /dev/null
+++ b/tapset/fs.stp
@@ -0,0 +1,31 @@
+
+probe fs.read.return = kernel.function("vfs_read").return {
+	bytes = ($return > 0 ? $return : 0)
+}
+
+probe fs.write.return = kernel.function("vfs_write").return {
+	bytes = ($return > 0 ? $return : 0)
+}
+
+function file2name:string(filep:long) 
+%{
+	char *start = NULL, buf[MAXSTRINGLEN];
+	struct dentry *dentry = NULL;
+	struct vfsmount *mnt = NULL;
+	struct file *file = (struct file *)(long) kread(&(THIS->filep));
+
+	if (file) {
+/*
+		mnt = (struct vfsmount *) kread(&(file->f_path.mnt));
+		dentry = (struct dentry *) kread(&(file->f_path.dentry));
+*/
+		mnt = (struct vfsmount *) kread(&(file->f_vfsmnt));
+		dentry = (struct dentry *) kread(&(file->f_dentry));
+	}
+	if (mnt && dentry)
+		start = d_path(dentry, mnt, buf, MAXSTRINGLEN);
+	if (start > 0)
+		strlcpy(THIS->__retvalue, start, MAXSTRINGLEN);
+
+	CATCH_DEREF_FAULT();
+%}