From 9692ed2f93777e1060837b97687509f8a22c2b60 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Tue, 3 May 2022 20:31:50 +0200
Subject: kernel: reference count mount objects, free them on process kills

---
 src/kernel/vfs/mount.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/kernel/vfs/mount.h')

diff --git a/src/kernel/vfs/mount.h b/src/kernel/vfs/mount.h
index 5fb6d16..96a2d7b 100644
--- a/src/kernel/vfs/mount.h
+++ b/src/kernel/vfs/mount.h
@@ -7,9 +7,15 @@ struct vfs_mount {
 	char *prefix;
 	size_t prefix_len;
 	struct vfs_backend *backend;
+	size_t refs; /* counts all references, atm from:
+	              *  - struct vfs_mount
+	              *  - struct proc
+	              */
 };
 
 // prepares init's filesystem view
 struct vfs_mount *vfs_mount_seed(void);
 struct vfs_mount *vfs_mount_resolve(
 		struct vfs_mount *top, const char *path, size_t path_len);
+/** Decrements the reference count, potentially freeing the mount. */
+void vfs_mount_remref(struct vfs_mount *mnt);
-- 
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