Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / linux / jffs2.h

diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h
index e1a49dc..cf792bb 100644 (file)
--- a/include/linux/jffs2.h
+++ b/include/linux/jffs2.h
@@ -3,12 +3,12 @@
  *
  * Copyright (C) 2001-2003 Red Hat, Inc.
  *
- * Created by David Woodhouse <dwmw2@redhat.com>
+ * Created by David Woodhouse <dwmw2@infradead.org>
  *
- * For licensing information, see the file 'LICENCE' in the 
+ * For licensing information, see the file 'LICENCE' in the
  * jffs2 directory.
  *
- * $Id: jffs2.h,v 1.31 2003/10/04 08:33:05 dwmw2 Exp $
+ * $Id: jffs2.h,v 1.38 2005/09/26 11:37:23 havasi Exp $
  *
  */
 
@@ -28,6 +28,9 @@
 #define JFFS2_EMPTY_BITMASK 0xffff
 #define JFFS2_DIRTY_BITMASK 0x0000
 
+/* Summary node MAGIC marker */
+#define JFFS2_SUM_MAGIC        0x02851885
+
 /* We only allow a single char for length, and 0xFF is empty flash so
    we don't want it confused with a real length. Hence max 254.
 */
@@ -60,15 +63,17 @@
 #define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
 #define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4)
 
+#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6)
+
 // Maybe later...
 //#define JFFS2_NODETYPE_CHECKPOINT (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
 //#define JFFS2_NODETYPE_OPTIONS (JFFS2_FEATURE_RWCOMPAT_COPY | JFFS2_NODE_ACCURATE | 4)
 
 
-#define JFFS2_INO_FLAG_PREREAD   1     /* Do read_inode() for this one at 
-                                          mount time, don't wait for it to 
+#define JFFS2_INO_FLAG_PREREAD   1     /* Do read_inode() for this one at
+                                          mount time, don't wait for it to
                                           happen later */
-#define JFFS2_INO_FLAG_USERCOMPR  2    /* User has requested a specific 
+#define JFFS2_INO_FLAG_USERCOMPR  2    /* User has requested a specific
                                           compression type */
 
 
@@ -87,39 +92,6 @@ typedef struct {
        uint16_t v16;
 } __attribute__((packed)) jint16_t;
 
-#define JFFS2_NATIVE_ENDIAN
-
-/* Note we handle mode bits conversion from JFFS2 (i.e. Linux) to/from
-   whatever OS we're actually running on here too. */
-
-#if defined(JFFS2_NATIVE_ENDIAN)
-#define cpu_to_je16(x) ((jint16_t){x})
-#define cpu_to_je32(x) ((jint32_t){x})
-#define cpu_to_jemode(x) ((jmode_t){os_to_jffs2_mode(x)})
-
-#define je16_to_cpu(x) ((x).v16)
-#define je32_to_cpu(x) ((x).v32)
-#define jemode_to_cpu(x) (jffs2_to_os_mode((x).m))
-#elif defined(JFFS2_BIG_ENDIAN)
-#define cpu_to_je16(x) ((jint16_t){cpu_to_be16(x)})
-#define cpu_to_je32(x) ((jint32_t){cpu_to_be32(x)})
-#define cpu_to_jemode(x) ((jmode_t){cpu_to_be32(os_to_jffs2_mode(x))})
-
-#define je16_to_cpu(x) (be16_to_cpu(x.v16))
-#define je32_to_cpu(x) (be32_to_cpu(x.v32))
-#define jemode_to_cpu(x) (be32_to_cpu(jffs2_to_os_mode((x).m)))
-#elif defined(JFFS2_LITTLE_ENDIAN)
-#define cpu_to_je16(x) ((jint16_t){cpu_to_le16(x)})
-#define cpu_to_je32(x) ((jint32_t){cpu_to_le32(x)})
-#define cpu_to_jemode(x) ((jmode_t){cpu_to_le32(os_to_jffs2_mode(x))})
-
-#define je16_to_cpu(x) (le16_to_cpu(x.v16))
-#define je32_to_cpu(x) (le32_to_cpu(x.v32))
-#define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m)))
-#else 
-#error wibble
-#endif
-
 struct jffs2_unknown_node
 {
        /* All start like this */
@@ -132,7 +104,7 @@ struct jffs2_unknown_node
 struct jffs2_raw_dirent
 {
        jint16_t magic;
-       jint16_t nodetype;      /* == JFFS_NODETYPE_DIRENT */
+       jint16_t nodetype;      /* == JFFS2_NODETYPE_DIRENT */
        jint32_t totlen;
        jint32_t hdr_crc;
        jint32_t pino;
@@ -148,7 +120,7 @@ struct jffs2_raw_dirent
 } __attribute__((packed));
 
 /* The JFFS2 raw inode structure: Used for storage on physical media.  */
-/* The uid, gid, atime, mtime and ctime members could be longer, but 
+/* The uid, gid, atime, mtime and ctime members could be longer, but
    are left like this for space efficiency. If and when people decide
    they really need them extended, it's simple enough to add support for
    a new type of raw node.
@@ -156,7 +128,7 @@ struct jffs2_raw_dirent
 struct jffs2_raw_inode
 {
        jint16_t magic;      /* A constant magic number.  */
-       jint16_t nodetype;   /* == JFFS_NODETYPE_INODE */
+       jint16_t nodetype;   /* == JFFS2_NODETYPE_INODE */
        jint32_t totlen;     /* Total length of this node (inc data, etc.) */
        jint32_t hdr_crc;
        jint32_t ino;        /* Inode number.  */
@@ -179,9 +151,25 @@ struct jffs2_raw_inode
        uint8_t data[0];
 } __attribute__((packed));
 
-union jffs2_node_union {
+struct jffs2_raw_summary
+{
+       jint16_t magic;
+       jint16_t nodetype;      /* = JFFS2_NODETYPE_SUMMARY */
+       jint32_t totlen;
+       jint32_t hdr_crc;
+       jint32_t sum_num;       /* number of sum entries*/
+       jint32_t cln_mkr;       /* clean marker size, 0 = no cleanmarker */
+       jint32_t padded;        /* sum of the size of padding nodes */
+       jint32_t sum_crc;       /* summary information crc */
+       jint32_t node_crc;      /* node crc */
+       jint32_t sum[0];        /* inode summary info */
+} __attribute__((packed));
+
+union jffs2_node_union
+{
        struct jffs2_raw_inode i;
        struct jffs2_raw_dirent d;
+       struct jffs2_raw_summary s;
        struct jffs2_unknown_node u;
 };