Implement dump_stack()

Rust has this in the standard library - nice.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

2 files changed, 7 insertions, 0 deletions

diff --git a/src/bcachefs.rs b/src/bcachefs.rs
index 91c44db0..f49f9195 100644
--- a/src/bcachefs.rs
+++ b/src/bcachefs.rs
@@ -1,5 +1,6 @@
 mod commands;
 mod key;
+mod dump_stack;
 mod logging;
 mod wrappers;
 
diff --git a/src/dump_stack.rs b/src/dump_stack.rs
new file mode 100644
index 00000000..35f0ee27
--- /dev/null
+++ b/src/dump_stack.rs
@@ -0,0 +1,6 @@
+// This will show C frames in the backtrace
+#[no_mangle]
+pub extern "C" fn dump_stack() {
+    let bt = std::backtrace::Backtrace::force_capture();
+    println!("{}", bt);
+}