feat: (vfs) write_page and read_page file operations

[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 af2a5f7f41de687e7a1f6fd4a2a9ac126af8b385..c265c4b36aa3b08e4e2b598ad8edd57da28b7b6e 100644 (file)
--- a/lunaix-os/kernel/device/devfs.c
+++ b/lunaix-os/kernel/device/devfs.c
@@ -1,4 +1,5 @@
 #include <lunaix/device.h>
+#include <lunaix/dirent.h>
 #include <lunaix/fs.h>
 #include <lunaix/fs/devfs.h>
 #include <lunaix/spike.h>
@@ -34,6 +35,34 @@ devfs_write(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
     return dev->write(dev, buffer, fpos, len);
 }
 
+int
+devfs_read_page(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
+{
+    assert(inode->data);
+
+    struct device* dev = (struct device*)inode->data;
+
+    if (!dev->read_page) {
+        return ENOTSUP;
+    }
+
+    return dev->read_page(dev, buffer, fpos);
+}
+
+int
+devfs_write_page(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
+{
+    assert(inode->data);
+
+    struct device* dev = (struct device*)inode->data;
+
+    if (!dev->read_page) {
+        return ENOTSUP;
+    }
+
+    return dev->read_page(dev, buffer, fpos);
+}
+
 int
 devfs_get_itype(struct device* dev)
 {
@@ -49,6 +78,18 @@ devfs_get_itype(struct device* dev)
     return itype;
 }
 
+int
+devfs_get_dtype(struct device* dev)
+{
+    switch (dev->dev_type & DEV_MSKIF) {
+        case DEV_IFCAT:
+            return DT_DIR;
+
+        default:
+            return DT_FILE;
+    }
+}
+
 int
 devfs_mknod(struct v_dnode* dnode, struct device* dev)
 {
@@ -91,7 +132,7 @@ devfs_readdir(struct v_file* file, struct dir_context* dctx)
         return 0;
     }
     dctx->read_complete_callback(
-      dctx, dev->name.value, dev->name.len, devfs_get_itype(dev));
+      dctx, dev->name.value, dev->name.len, devfs_get_dtype(dev));
     return 1;
 }
 
@@ -144,6 +185,8 @@ struct v_inode_ops devfs_inode_ops = { .dir_lookup = devfs_dirlookup,
 
 struct v_file_ops devfs_file_ops = { .close = default_file_close,
                                      .read = devfs_read,
+                                     .read_page = devfs_read_page,
                                      .write = devfs_write,
+                                     .write_page = devfs_write_page,
                                      .seek = default_file_seek,
                                      .readdir = devfs_readdir };
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