X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/7b8a1bcad75628f9add4590db2bb9b8e418ee8eb..0765e7c133eb393d8cd0292af444543c2edf8ccc:/lunaix-os/kernel/fs/mount.c

diff --git a/lunaix-os/kernel/fs/mount.c b/lunaix-os/kernel/fs/mount.c
index 96cc741..2b996d4 100644
--- a/lunaix-os/kernel/fs/mount.c
+++ b/lunaix-os/kernel/fs/mount.c
@@ -63,6 +63,8 @@ __vfs_do_unmount(struct v_mount* mnt)
 
     mnt_chillax(mnt->parent);
 
+    mnt->mnt_point->mnt = mnt->parent;
+
     vfs_sb_free(sb);
     atomic_fetch_sub(&mnt->mnt_point->ref_count, 1);
     vfree(mnt);
@@ -249,6 +251,11 @@ __DEFINE_LXSYSCALL4(int,
         goto done;
     }
 
+    if (mnt->mnt->mnt_point == mnt) {
+        errno = EBUSY;
+        goto done;
+    }
+
     // By our convention.
     // XXX could we do better?
     struct device* device = NULL;