Changeset 4bf40f6 in mainline

Timestamp:

2008-08-12T19:14:09Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

79d031b

Parents:

17b2aac

Message:

Dummy implementation of fat_read().

Location:

uspace/srv/fs/fat

Files:

• fat.c (modified) (1 diff)
• fat.h (modified) (1 diff)
• fat_ops.c (modified) (1 diff)

uspace/srv/fs/fat/fat.c

@@ -108 +108 @@
                         fat_lookup(callid, &call);
                         break;
+                case VFS_READ:
+                        fat_read(callid, &call);
+                        break;
                 default:
                         ipc_answer_0(callid, ENOTSUP);

uspace/srv/fs/fat/fat.h

@@ -223 +223 @@
 extern void fat_mount(ipc_callid_t, ipc_call_t *);
 extern void fat_lookup(ipc_callid_t, ipc_call_t *);
+extern void fat_read(ipc_callid_t, ipc_call_t *);
 
 extern fat_idx_t *fat_idx_get_by_pos(dev_handle_t, fat_cluster_t, unsigned);

uspace/srv/fs/fat/fat_ops.c

@@ -707 +707 @@
 }
 
+void fat_read(ipc_callid_t rid, ipc_call_t *request)
+{
+        dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request);
+        fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request);
+        off_t pos = (off_t)IPC_GET_ARG3(*request);
+        fat_node_t *nodep = (fat_node_t *)fat_node_get(dev_handle, index);
+        if (!nodep) {
+                ipc_answer_0(rid, ENOENT);
+                return;
+        }
+
+        ipc_callid_t callid;
+        size_t len;
+        if (!ipc_data_write_receive(&callid, &len)) {
+                fat_node_put(nodep);
+                ipc_answer_0(callid, EINVAL);
+                ipc_answer_0(rid, EINVAL);
+                return;
+        }
+
+        if (nodep->type == FAT_FILE) {
+                /* TODO */
+                fat_node_put(nodep);
+                ipc_answer_0(callid, ENOTSUP);
+                ipc_answer_0(rid, ENOTSUP);
+                return;
+        } else {
+                assert(nodep->type == FAT_DIRECTORY);
+                /* TODO */
+                fat_node_put(nodep);
+                ipc_answer_0(callid, ENOTSUP);
+                ipc_answer_0(rid, ENOTSUP);
+                return;
+        }
+
+        fat_node_put(nodep);
+}
+
 /**
  * @}