Changeset 01ab41b in mainline for uspace/lib/ext4/libext4_superblock.c

Timestamp:

2011-10-03T11:57:14Z (14 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

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

Children:

9c0c0e1

Parents:

54935cf6

Message:

added more methods needed during ext4 mounting (also copied from ext2)

File:

• uspace/lib/ext4/libext4_superblock.c (modified) (1 diff)

uspace/lib/ext4/libext4_superblock.c

@@ -36 +36 @@
  */
 
+#include <byteorder.h>
+#include <errno.h>
+#include <libblock.h>
+#include <malloc.h>
 #include "libext4_superblock.h"
 
+/**
+ * TODO doxy
+ */
+uint16_t ext2_superblock_get_magic(ext4_superblock_t *sb)
+{
+        return uint16_t_le2host(sb->s_magic);
+}
+
+/**
+ * TODO doxy
+ */
+uint32_t ext4_superblock_get_first_block(ext4_superblock_t *sb)
+{
+        return uint32_t_le2host(sb->s_first_data_block);
+}
+
+/**
+ * TODO doxy
+ */
+uint32_t ext4_superblock_get_block_size_log2(ext4_superblock_t *sb)
+{
+        return uint32_t_le2host(sb->s_log_block_size);
+}
+
+/**
+ * TODO doxy
+ */
+uint32_t ext4_superblock_get_block_size(ext4_superblock_t *sb)
+{
+        return 1024 << ext4_superblock_get_block_size_log2(sb);
+}
+
+
+/**
+ * TODO doxy
+ */
+int ext4_superblock_read_direct(service_id_t service_id,
+    ext4_superblock_t **superblock)
+{
+        void *data;
+        int rc;
+
+        data = malloc(EXT4_SUPERBLOCK_SIZE);
+        if (data == NULL) {
+                return ENOMEM;
+        }
+
+        rc = block_read_bytes_direct(service_id, EXT4_SUPERBLOCK_OFFSET,
+            EXT4_SUPERBLOCK_SIZE, data);
+
+        if (rc != EOK) {
+                free(data);
+                return rc;
+        }
+
+        (*superblock) = data;
+
+        return EOK;
+}
+
+/**
+ * TODO doxy
+ */
+int ext4_superblock_check_sanity(ext4_superblock_t *sb)
+{
+        // TODO
+        return EOK;
+}
 
 /**