summaryrefslogtreecommitdiff
path: root/jffsX-utils/summary.h
diff options
context:
space:
mode:
Diffstat (limited to 'jffsX-utils/summary.h')
-rw-r--r--jffsX-utils/summary.h177
1 files changed, 177 insertions, 0 deletions
diff --git a/jffsX-utils/summary.h b/jffsX-utils/summary.h
new file mode 100644
index 0000000..e9d95a5
--- /dev/null
+++ b/jffsX-utils/summary.h
@@ -0,0 +1,177 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ * Zoltan Sogor <weth@inf.u-szeged.hu>,
+ * Patrik Kluba <pajko@halom.u-szeged.hu>,
+ * University of Szeged, Hungary
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ */
+
+#ifndef JFFS2_SUMMARY_H
+#define JFFS2_SUMMARY_H
+
+#include <linux/jffs2.h>
+
+#define DIRTY_SPACE(x) do { typeof(x) _x = (x); \
+ c->free_size -= _x; c->dirty_size += _x; \
+ jeb->free_size -= _x ; jeb->dirty_size += _x; \
+}while(0)
+#define USED_SPACE(x) do { typeof(x) _x = (x); \
+ c->free_size -= _x; c->used_size += _x; \
+ jeb->free_size -= _x ; jeb->used_size += _x; \
+}while(0)
+#define WASTED_SPACE(x) do { typeof(x) _x = (x); \
+ c->free_size -= _x; c->wasted_size += _x; \
+ jeb->free_size -= _x ; jeb->wasted_size += _x; \
+}while(0)
+#define UNCHECKED_SPACE(x) do { typeof(x) _x = (x); \
+ c->free_size -= _x; c->unchecked_size += _x; \
+ jeb->free_size -= _x ; jeb->unchecked_size += _x; \
+}while(0)
+
+#define BLK_STATE_ALLFF 0
+#define BLK_STATE_CLEAN 1
+#define BLK_STATE_PARTDIRTY 2
+#define BLK_STATE_CLEANMARKER 3
+#define BLK_STATE_ALLDIRTY 4
+#define BLK_STATE_BADBLOCK 5
+
+#define JFFS2_SUMMARY_NOSUM_SIZE 0xffffffff
+#define JFFS2_SUMMARY_INODE_SIZE (sizeof(struct jffs2_sum_inode_flash))
+#define JFFS2_SUMMARY_DIRENT_SIZE(x) (sizeof(struct jffs2_sum_dirent_flash) + (x))
+#define JFFS2_SUMMARY_XATTR_SIZE (sizeof(struct jffs2_sum_xattr_flash))
+#define JFFS2_SUMMARY_XREF_SIZE (sizeof(struct jffs2_sum_xref_flash))
+
+/* Summary structures used on flash */
+
+struct jffs2_sum_unknown_flash
+{
+ jint16_t nodetype; /* node type */
+} __attribute__((packed));
+
+struct jffs2_sum_inode_flash
+{
+ jint16_t nodetype; /* node type */
+ jint32_t inode; /* inode number */
+ jint32_t version; /* inode version */
+ jint32_t offset; /* offset on jeb */
+ jint32_t totlen; /* record length */
+} __attribute__((packed));
+
+struct jffs2_sum_dirent_flash
+{
+ jint16_t nodetype; /* == JFFS_NODETYPE_DIRENT */
+ jint32_t totlen; /* record length */
+ jint32_t offset; /* ofset on jeb */
+ jint32_t pino; /* parent inode */
+ jint32_t version; /* dirent version */
+ jint32_t ino; /* == zero for unlink */
+ uint8_t nsize; /* dirent name size */
+ uint8_t type; /* dirent type */
+ uint8_t name[0]; /* dirent name */
+} __attribute__((packed));
+
+struct jffs2_sum_xattr_flash
+{
+ jint16_t nodetype; /* == JFFS2_NODETYPE_XATR */
+ jint32_t xid; /* xattr identifier */
+ jint32_t version; /* version number */
+ jint32_t offset; /* offset on jeb */
+ jint32_t totlen; /* node length */
+} __attribute__((packed));
+
+struct jffs2_sum_xref_flash
+{
+ jint16_t nodetype; /* == JFFS2_NODETYPE_XREF */
+ jint32_t offset; /* offset on jeb */
+} __attribute__((packed));
+
+union jffs2_sum_flash
+{
+ struct jffs2_sum_unknown_flash u;
+ struct jffs2_sum_inode_flash i;
+ struct jffs2_sum_dirent_flash d;
+ struct jffs2_sum_xattr_flash x;
+ struct jffs2_sum_xref_flash r;
+};
+
+/* Summary structures used in the memory */
+
+struct jffs2_sum_unknown_mem
+{
+ union jffs2_sum_mem *next;
+ jint16_t nodetype; /* node type */
+} __attribute__((packed));
+
+struct jffs2_sum_inode_mem
+{
+ union jffs2_sum_mem *next;
+ jint16_t nodetype; /* node type */
+ jint32_t inode; /* inode number */
+ jint32_t version; /* inode version */
+ jint32_t offset; /* offset on jeb */
+ jint32_t totlen; /* record length */
+} __attribute__((packed));
+
+struct jffs2_sum_dirent_mem
+{
+ union jffs2_sum_mem *next;
+ jint16_t nodetype; /* == JFFS_NODETYPE_DIRENT */
+ jint32_t totlen; /* record length */
+ jint32_t offset; /* ofset on jeb */
+ jint32_t pino; /* parent inode */
+ jint32_t version; /* dirent version */
+ jint32_t ino; /* == zero for unlink */
+ uint8_t nsize; /* dirent name size */
+ uint8_t type; /* dirent type */
+ uint8_t name[0]; /* dirent name */
+} __attribute__((packed));
+
+struct jffs2_sum_xattr_mem
+{
+ union jffs2_sum_mem *next;
+ jint16_t nodetype;
+ jint32_t xid;
+ jint32_t version;
+ jint32_t offset;
+ jint32_t totlen;
+} __attribute__((packed));
+
+struct jffs2_sum_xref_mem
+{
+ union jffs2_sum_mem *next;
+ jint16_t nodetype;
+ jint32_t offset;
+} __attribute__((packed));
+
+union jffs2_sum_mem
+{
+ struct jffs2_sum_unknown_mem u;
+ struct jffs2_sum_inode_mem i;
+ struct jffs2_sum_dirent_mem d;
+ struct jffs2_sum_xattr_mem x;
+ struct jffs2_sum_xref_mem r;
+};
+
+struct jffs2_summary
+{
+ uint32_t sum_size;
+ uint32_t sum_num;
+ uint32_t sum_padded;
+ union jffs2_sum_mem *sum_list_head;
+ union jffs2_sum_mem *sum_list_tail;
+};
+
+/* Summary marker is stored at the end of every sumarized erase block */
+
+struct jffs2_sum_marker
+{
+ jint32_t offset; /* offset of the summary node in the jeb */
+ jint32_t magic; /* == JFFS2_SUM_MAGIC */
+};
+
+#define JFFS2_SUMMARY_FRAME_SIZE (sizeof(struct jffs2_raw_summary) + sizeof(struct jffs2_sum_marker))
+
+#endif