feat: owloysius - dynamic init function invocator

[lunaix-os.git] / lunaix-os / kernel / device / devfs.c

diff --git a/lunaix-os/kernel/device/devfs.c b/lunaix-os/kernel/device/devfs.c
index 69de7fa62cb2fa29b56bf7eaaead3b483252975d..350bbd65e447ab64ed5b50de1757490ef75a27a4 100644 (file)
--- a/lunaix-os/kernel/device/devfs.c
+++ b/lunaix-os/kernel/device/devfs.c
@@ -3,7 +3,7 @@
 #include <lunaix/fs/devfs.h>
 #include <lunaix/spike.h>
 
-#include <usr/sys/dirent_defs.h>
+#include <usr/lunaix/dirent_defs.h>
 
 extern struct v_inode_ops devfs_inode_ops;
 extern struct v_file_ops devfs_file_ops;
@@ -13,13 +13,13 @@ devfs_read(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
 {
     assert(inode->data);
 
-    struct device* dev = (struct device*)inode->data;
+    struct device* dev = resolve_device(inode->data);
 
-    if (!dev->read) {
+    if (!dev || !dev->ops.read) {
         return ENOTSUP;
     }
 
-    return dev->read(dev, buffer, fpos, len);
+    return dev->ops.read(dev, buffer, fpos, len);
 }
 
 int
@@ -27,79 +27,83 @@ devfs_write(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
 {
     assert(inode->data);
 
-    struct device* dev = (struct device*)inode->data;
+    struct device* dev = resolve_device(inode->data);
 
-    if (!dev->write) {
+    if (!dev || !dev->ops.write) {
         return ENOTSUP;
     }
 
-    return dev->write(dev, buffer, fpos, len);
+    return dev->ops.write(dev, buffer, fpos, len);
 }
 
 int
-devfs_read_page(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
+devfs_read_page(struct v_inode* inode, void* buffer, size_t fpos)
 {
     assert(inode->data);
 
-    struct device* dev = (struct device*)inode->data;
+    struct device* dev = resolve_device(inode->data);
 
-    if (!dev->read_page) {
+    if (!dev || !dev->ops.read_page) {
         return ENOTSUP;
     }
 
-    return dev->read_page(dev, buffer, fpos);
+    return dev->ops.read_page(dev, buffer, fpos);
 }
 
 int
-devfs_write_page(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
+devfs_write_page(struct v_inode* inode, void* buffer, size_t fpos)
 {
     assert(inode->data);
 
-    struct device* dev = (struct device*)inode->data;
+    struct device* dev = resolve_device(inode->data);
 
-    if (!dev->read_page) {
+    if (!dev || !dev->ops.read_page) {
         return ENOTSUP;
     }
 
-    return dev->read_page(dev, buffer, fpos);
+    return dev->ops.read_page(dev, buffer, fpos);
 }
 
 int
-devfs_get_itype(struct device* dev)
+devfs_get_itype(struct device_meta* dm)
 {
     int itype = VFS_IFFILE;
+
+    if (valid_device_subtype_ref(dm, DEV_CAT)) {
+        return VFS_IFDIR;
+    }
+
+    struct device* dev = resolve_device(dm);
     int dev_if = dev->dev_type & DEV_MSKIF;
-    if (dev_if == DEV_IFCAT) {
-        itype = VFS_IFDIR;
-    } else if (dev_if == DEV_IFVOL) {
+    
+    if (dev_if == DEV_IFVOL) {
         itype |= VFS_IFVOLDEV;
-    } else {
+    } else if (dev_if == DEV_IFSEQ) {
         itype |= VFS_IFSEQDEV;
+    } else {
+        itype |= VFS_IFDEV;
     }
     return itype;
 }
 
 int
-devfs_get_dtype(struct device* dev)
+devfs_get_dtype(struct device_meta* dev)
 {
-    switch (dev->dev_type & DEV_MSKIF) {
-        case DEV_IFCAT:
-            return DT_DIR;
-
-        default:
-            return DT_FILE;
+    if (valid_device_subtype_ref(dev, DEV_CAT)) {
+        return DT_DIR;
     }
+    return DT_FILE;
 }
 
 int
-devfs_mknod(struct v_dnode* dnode, struct device* dev)
+devfs_mknod(struct v_dnode* dnode, struct device_meta* dev)
 {
     assert(dev);
 
-    struct v_inode* devnod = vfs_i_find(dnode->super_block, dev->dev_id);
+    struct v_inode* devnod = vfs_i_find(dnode->super_block, dev->dev_uid);
     if (!devnod) {
         if ((devnod = vfs_i_alloc(dnode->super_block))) {
-            devnod->id = dev->dev_id;
+            devnod->id = dev->dev_uid;
             devnod->data = dev;
             devnod->itype = devfs_get_itype(dev);
 
@@ -116,22 +120,40 @@ devfs_mknod(struct v_dnode* dnode, struct device* dev)
 int
 devfs_dirlookup(struct v_inode* this, struct v_dnode* dnode)
 {
-    struct device* dev =
-      device_getbyhname((struct device*)this->data, &dnode->name);
+    void* data = this->data;
+    struct device_meta* rootdev = resolve_device_meta(data);
+
+    if (data && !rootdev) {
+        return ENOTDIR;
+    }
+
+    struct device_meta* dev =
+      device_getbyhname(rootdev, &dnode->name);
+    
     if (!dev) {
         return ENOENT;
     }
+
     return devfs_mknod(dnode, dev);
 }
 
 int
 devfs_readdir(struct v_file* file, struct dir_context* dctx)
 {
-    struct device* dev =
-      device_getbyoffset((struct device*)(file->inode->data), dctx->index);
+    void* data = file->inode->data;
+    struct device_meta* rootdev = resolve_device_meta(data);
+
+    if (data && !rootdev) {
+        return ENOTDIR;
+    }
+
+    struct device_meta* dev =
+      device_getbyoffset(rootdev, dctx->index);
+    
     if (!dev) {
         return 0;
     }
+
     dctx->read_complete_callback(
       dctx, dev->name.value, dev->name.len, devfs_get_dtype(dev));
     return 1;
@@ -178,6 +200,7 @@ devfs_init()
     fs->mount = devfs_mount;
     fs->unmount = devfs_unmount;
 }
+EXPORT_FILE_SYSTEM(devfs, devfs_init);
 
 struct v_inode_ops devfs_inode_ops = { .dir_lookup = devfs_dirlookup,
                                        .open = default_inode_open,