Constify, and add an API function to find a named node in a directory.

2 files changed, 21 insertions, 6 deletions

diff --git a/sys/fs/pseudofs/pseudofs.c b/sys/fs/pseudofs/pseudofs.c
index 8297ef6..4db02b4 100644
--- a/sys/fs/pseudofs/pseudofs.c
+++ b/sys/fs/pseudofs/pseudofs.c
@@ -118,7 +118,7 @@ _pfs_fixup_dir(struct pfs_node *parent)
  * Create a directory
  */
 struct pfs_node	*
-pfs_create_dir(struct pfs_node *parent, char *name,
+pfs_create_dir(struct pfs_node *parent, const char *name,
 	       pfs_attr_t attr, pfs_vis_t vis, int flags)
 {
 	struct pfs_node *dir;
@@ -151,7 +151,7 @@ pfs_create_dir(struct pfs_node *parent, char *name,
  * Create a file
  */
 struct pfs_node	*
-pfs_create_file(struct pfs_node *parent, char *name, pfs_fill_t fill,
+pfs_create_file(struct pfs_node *parent, const char *name, pfs_fill_t fill,
 		pfs_attr_t attr, pfs_vis_t vis, int flags)
 {
 	struct pfs_node *node;
@@ -180,7 +180,7 @@ pfs_create_file(struct pfs_node *parent, char *name, pfs_fill_t fill,
  * Create a symlink
  */
 struct pfs_node	*
-pfs_create_link(struct pfs_node *parent, char *name, pfs_fill_t fill,
+pfs_create_link(struct pfs_node *parent, const char *name, pfs_fill_t fill,
 		pfs_attr_t attr, pfs_vis_t vis, int flags)
 {
 	struct pfs_node *node;
@@ -193,6 +193,20 @@ pfs_create_link(struct pfs_node *parent, char *name, pfs_fill_t fill,
 }
 
 /*
+ * Locate a node by name
+ */
+struct pfs_node *
+pfs_find_node(struct pfs_node *parent, const char *name)
+{
+	struct pfs_node *node;
+
+	for (node = parent->pn_nodes; node != NULL; node = node->pn_next)
+		if (strcmp(node->pn_name, name) == 0)
+			return (node);
+	return (NULL);
+}
+
+/*
  * Destroy a node or a tree of nodes
  */
 int
diff --git a/sys/fs/pseudofs/pseudofs.h b/sys/fs/pseudofs/pseudofs.h
index 021ea3f..2d44811 100644
--- a/sys/fs/pseudofs/pseudofs.h
+++ b/sys/fs/pseudofs/pseudofs.h
@@ -210,14 +210,15 @@ 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, char *name,
+struct pfs_node	*pfs_create_dir	(struct pfs_node *parent, const char *name,
 				 pfs_attr_t attr, pfs_vis_t vis, int flags);
-struct pfs_node	*pfs_create_file(struct pfs_node *parent, 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);
-struct pfs_node	*pfs_create_link(struct pfs_node *parent, char *name,
+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);
+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);
 int		 pfs_destroy	(struct pfs_node *pn);