3 files changed, 44 insertions, 22 deletions

diff --git a/sys/fs/procfs/procfs.c b/sys/fs/procfs/procfs.c
index d311a98a527e..56bc0cc03751 100644
--- a/sys/fs/procfs/procfs.c
+++ b/sys/fs/procfs/procfs.c
@@ -160,39 +160,39 @@ procfs_init(PFS_INIT_ARGS)
 	root = pi->pi_root;
 
 	pfs_create_link(root, "curproc", procfs_docurproc,
-	    NULL, NULL, 0);
+	    NULL, NULL, NULL, 0);
 
 	dir = pfs_create_dir(root, "pid",
-	    procfs_attr, NULL, PFS_PROCDEP);
+	    procfs_attr, NULL, NULL, PFS_PROCDEP);
 	pfs_create_file(dir, "cmdline", procfs_doproccmdline,
-	    NULL, NULL, PFS_RD);
+	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(dir, "ctl", procfs_doprocctl,
-	    procfs_attr, NULL, PFS_WR);
+	    procfs_attr, NULL, NULL, PFS_WR);
 	pfs_create_file(dir, "dbregs", procfs_doprocdbregs,
-	    procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
+	    procfs_attr, procfs_candebug, NULL, PFS_RDWR|PFS_RAW);
 	pfs_create_file(dir, "etype", procfs_doproctype,
-	    NULL, NULL, PFS_RD);
+	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(dir, "fpregs", procfs_doprocfpregs,
-	    procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
+	    procfs_attr, procfs_candebug, NULL, PFS_RDWR|PFS_RAW);
 	pfs_create_file(dir, "map", procfs_doprocmap,
-	    NULL, procfs_notsystem, PFS_RD);
+	    NULL, procfs_notsystem, NULL, PFS_RD);
 	node = pfs_create_file(dir, "mem", procfs_doprocmem,
-	    procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
+	    procfs_attr, procfs_candebug, NULL, PFS_RDWR|PFS_RAW);
 	node->pn_ioctl = procfs_ioctl;
 	node->pn_close = procfs_close;
 	pfs_create_file(dir, "note", procfs_doprocnote,
-	    procfs_attr, procfs_candebug, PFS_WR);
+	    procfs_attr, procfs_candebug, NULL, PFS_WR);
 	pfs_create_file(dir, "notepg", procfs_doprocnote,
-	    procfs_attr, procfs_candebug, PFS_WR);
+	    procfs_attr, procfs_candebug, NULL, PFS_WR);
 	pfs_create_file(dir, "regs", procfs_doprocregs,
-	    procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
+	    procfs_attr, procfs_candebug, NULL, PFS_RDWR|PFS_RAW);
 	pfs_create_file(dir, "rlimit", procfs_doprocrlimit,
-	    NULL, NULL, PFS_RD);
+	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(dir, "status", procfs_doprocstatus,
-	    NULL, NULL, PFS_RD);
+	    NULL, NULL, NULL, PFS_RD);
 
 	pfs_create_link(dir, "file", procfs_doprocfile,
-	    NULL, procfs_notsystem, 0);
+	    NULL, procfs_notsystem, NULL, 0);
 
 	return (0);
 }
diff --git a/sys/fs/pseudofs/pseudofs.c b/sys/fs/pseudofs/pseudofs.c
index da1758b9303e..42c45bbd4908 100644
--- a/sys/fs/pseudofs/pseudofs.c
+++ b/sys/fs/pseudofs/pseudofs.c
@@ -122,7 +122,8 @@ _pfs_fixup_dir(struct pfs_node *parent)
  */
 struct pfs_node	*
 pfs_create_dir(struct pfs_node *parent, const char *name,
-	       pfs_attr_t attr, pfs_vis_t vis, int flags)
+	       pfs_attr_t attr, pfs_vis_t vis, pfs_destroy_t destroy,
+	       int flags)
 {
 	struct pfs_node *dir;
 
@@ -135,6 +136,7 @@ pfs_create_dir(struct pfs_node *parent, const char *name,
 	dir->pn_type = (flags & PFS_PROCDEP) ? pfstype_procdir : pfstype_dir;
 	dir->pn_attr = attr;
 	dir->pn_vis = vis;
+	dir->pn_destroy = destroy;
 	dir->pn_flags = flags;
 
 	if (_pfs_add_node(parent, dir) != 0) {
@@ -155,7 +157,8 @@ pfs_create_dir(struct pfs_node *parent, const char *name,
  */
 struct pfs_node	*
 pfs_create_file(struct pfs_node *parent, const char *name, pfs_fill_t fill,
-		pfs_attr_t attr, pfs_vis_t vis, int flags)
+		pfs_attr_t attr, pfs_vis_t vis, pfs_destroy_t destroy,
+		int flags)
 {
 	struct pfs_node *node;
 
@@ -169,6 +172,7 @@ pfs_create_file(struct pfs_node *parent, const char *name, pfs_fill_t fill,
 	node->pn_func = fill;
 	node->pn_attr = attr;
 	node->pn_vis = vis;
+	node->pn_destroy = destroy;
 	node->pn_flags = flags;
 
 	if (_pfs_add_node(parent, node) != 0) {
@@ -184,11 +188,12 @@ pfs_create_file(struct pfs_node *parent, const char *name, pfs_fill_t fill,
  */
 struct pfs_node	*
 pfs_create_link(struct pfs_node *parent, const char *name, pfs_fill_t fill,
-		pfs_attr_t attr, pfs_vis_t vis, int flags)
+		pfs_attr_t attr, pfs_vis_t vis, pfs_destroy_t destroy, 
+		int flags)
 {
 	struct pfs_node *node;
 
-	node = pfs_create_file(parent, name, fill, attr, vis, flags);
+	node = pfs_create_file(parent, name, fill, attr, vis, destroy, flags);
 	if (node == NULL)
 		return (NULL);
 	node->pn_type = pfstype_symlink;
@@ -249,6 +254,10 @@ pfs_destroy(struct pfs_node *node)
 		mtx_unlock(&node->pn_info->pi_mutex);
 	}
 
+	/* callback to free any private resources */
+	if(node->pn_destroy != NULL)
+		(node->pn_destroy)(node);
+	
 	/* revoke vnodes and release memory */
 	pfs_disable(node);
 	FREE(node, M_PFSNODES);
diff --git a/sys/fs/pseudofs/pseudofs.h b/sys/fs/pseudofs/pseudofs.h
index b9701bc09337..58eba44b714c 100644
--- a/sys/fs/pseudofs/pseudofs.h
+++ b/sys/fs/pseudofs/pseudofs.h
@@ -155,6 +155,15 @@ typedef int (*pfs_getextattr_t)(PFS_GETEXTATTR_ARGS);
 typedef int (*pfs_close_t)(PFS_CLOSE_ARGS);
 
 /*
+ * Destroy callback
+ */
+#define PFS_DESTROY_ARGS \
+	struct pfs_node *pn
+#define PFS_DESTROY_PROTO(name) \
+	int name(PFS_DESTROY_ARGS);
+typedef int (*pfs_destroy_t)(PFS_DESTROY_ARGS);
+
+/*
  * pfs_info: describes a pseudofs instance
  */
 struct pfs_info {
@@ -186,6 +195,7 @@ struct pfs_node {
 	pfs_attr_t		 pn_attr;
 	pfs_vis_t		 pn_vis;
 	pfs_getextattr_t	 pn_getextattr;
+	pfs_destroy_t		 pn_destroy;
 	void			*pn_data;
 	int			 pn_flags;
 
@@ -215,13 +225,16 @@ int		 pfs_uninit	(struct pfs_info *pi, struct vfsconf *vfc);
  * Directory structure construction and manipulation
  */
 struct pfs_node	*pfs_create_dir	(struct pfs_node *parent, const char *name,
-				 pfs_attr_t attr, pfs_vis_t vis, int flags);
+				 pfs_attr_t attr, pfs_vis_t vis, 
+				 pfs_destroy_t destroy, int flags);
 struct pfs_node	*pfs_create_file(struct pfs_node *parent, const char *name,
 				 pfs_fill_t fill, pfs_attr_t attr,
-				 pfs_vis_t vis, int flags);
+				 pfs_vis_t vis, pfs_destroy_t destroy,
+				 int flags);
 struct pfs_node	*pfs_create_link(struct pfs_node *parent, const char *name,
 				 pfs_fill_t fill, pfs_attr_t attr,
-				 pfs_vis_t vis, int flags);
+				 pfs_vis_t vis, pfs_destroy_t destroy,
+				 int flags);
 struct pfs_node	*pfs_find_node	(struct pfs_node *parent, const char *name);
 int		 pfs_disable	(struct pfs_node *pn);
 int		 pfs_enable	(struct pfs_node *pn);