devfs: createdir and remove

kernel-src/fs/devfs.c

@@ -218,6 +218,7 @@ int devfs_inactive(vnode_t *node) {
 	if (devnode->master)
 		VOP_RELEASE(master);
 
+	// only called when the master is inactive
 	if (devnode->devops && devnode->devops->inactive)
 		devnode->devops->inactive(devnode->attr.rdevminor);
 
@@ -356,7 +357,7 @@ static vops_t vnops = {
 	.link = devfs_enodev,
 	.symlink = devfs_enodev,
 	.readlink = devfs_enodev,
-	.inactive = devfs_enodev,
+	.inactive = devfs_inactive,
 	.mmap = devfs_mmap,
 	.munmap = devfs_munmap,
 	.getdents = devfs_getdents,
@@ -497,3 +498,8 @@ void devfs_remove(char *name, int major, int minor) {
 	VOP_RELEASE(vnode);
 	VOP_RELEASE(vnode);
 }
+
+int devfs_createdir(char *name) {
+	vattr_t attr = {0};
+	return vfs_create((vnode_t *)devfsroot, name, &attr, V_TYPE_DIR, NULL);
+}

kernel-src/include/kernel/devfs.h

@@ -17,6 +17,7 @@
 #define DEV_MAJOR_URANDOM 9
 #define DEV_MAJOR_NET 10
 #define DEV_MAJOR_MOUSE 11
+#define DEV_MAJOR_PTY 12
 
 typedef struct {
 	int (*open)(int minor, vnode_t **vnode, int flags);
@@ -45,5 +46,7 @@ void devfs_init();
 int devfs_getnode(vnode_t *physical, int major, int minor, vnode_t **node);
 int devfs_register(devops_t *devops, char *name, int type, int major, int minor, mode_t mode);
 int devfs_getbyname(char *name, vnode_t **ret);
+int devfs_createdir(char *name);
+void devfs_remove(char *name, int major, int minor);
 
 #endif