kernel: vfs: Add support for open hook

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 13 insertions, 2 deletions

diff --git a/sys/kern/kern_filedesc.c b/sys/kern/kern_filedesc.c
index 6bce6d2..74ab859 100644
--- a/sys/kern/kern_filedesc.c
+++ b/sys/kern/kern_filedesc.c
@@ -291,12 +291,15 @@ open(const char *pathname, int oflag)
     int status;
 
     /*
-     * Attempt to create a vnode and allocate a
-     * file descriptor
+     * Attempt to create a vnode, call the open hook then
+     * allocate a file descriptor
      */
     if ((status = vfs_path_to_node(pathname, &vp)) != 0) {
         return status;
     }
+    if ((status = vfs_open(vp)) != 0) {
+        return status;
+    }
     if ((status = fd_alloc(this_td(), &fd)) != 0) {
         return status;
     }
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 5b31057..f760831 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -239,3 +239,11 @@ vfs_getattr(struct vnode *vp, struct vattr *vattr)
 {
     return vp->vops->getattr(vp, vattr);
 }
+
+int vfs_open(struct vnode *vp)
+{
+    if (vp->vops->open == NULL)
+        return -EIO;
+
+    return vp->vops->open(vp);
+}