From dfd2390191d93787b71835afb415f2b812f8f463 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Sat, 6 May 2006 12:53:55 +0100
Subject: Add XATTR support to mkfs.jffs2
Since this is optional, it might as well go in immediately.
---
include/linux/jffs2.h | 40 ++++++++++++++++++++++++++++++++++++++++
include/mtd/jffs2-user.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 87 insertions(+)
(limited to 'include')
diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h
index cf792bb..2cac60e 100644
--- a/include/linux/jffs2.h
+++ b/include/linux/jffs2.h
@@ -65,6 +65,18 @@
#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6)
+#define JFFS2_NODETYPE_XATTR (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 8)
+#define JFFS2_NODETYPE_XREF (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 9)
+
+/* XATTR Related */
+#define JFFS2_XPREFIX_USER 1 /* for "user." */
+#define JFFS2_XPREFIX_SECURITY 2 /* for "security." */
+#define JFFS2_XPREFIX_ACL_ACCESS 3 /* for "system.posix_acl_access" */
+#define JFFS2_XPREFIX_ACL_DEFAULT 4 /* for "system.posix_acl_default" */
+#define JFFS2_XPREFIX_TRUSTED 5 /* for "trusted.*" */
+
+#define JFFS2_ACL_VERSION 0x0001
+
// 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)
@@ -151,6 +163,32 @@ struct jffs2_raw_inode
uint8_t data[0];
} __attribute__((packed));
+struct jffs2_raw_xattr {
+ jint16_t magic;
+ jint16_t nodetype; /* = JFFS2_NODETYPE_XATTR */
+ jint32_t totlen;
+ jint32_t hdr_crc;
+ jint32_t xid; /* XATTR identifier number */
+ jint32_t version;
+ uint8_t xprefix;
+ uint8_t name_len;
+ jint16_t value_len;
+ jint32_t data_crc;
+ jint32_t node_crc;
+ uint8_t data[0];
+} __attribute__((packed));
+
+struct jffs2_raw_xref
+{
+ jint16_t magic;
+ jint16_t nodetype; /* = JFFS2_NODETYPE_XREF */
+ jint32_t totlen;
+ jint32_t hdr_crc;
+ jint32_t ino; /* inode number */
+ jint32_t xid; /* XATTR identifier number */
+ jint32_t node_crc;
+} __attribute__((packed));
+
struct jffs2_raw_summary
{
jint16_t magic;
@@ -169,6 +207,8 @@ union jffs2_node_union
{
struct jffs2_raw_inode i;
struct jffs2_raw_dirent d;
+ struct jffs2_raw_xattr x;
+ struct jffs2_raw_xref r;
struct jffs2_raw_summary s;
struct jffs2_unknown_node u;
};
diff --git a/include/mtd/jffs2-user.h b/include/mtd/jffs2-user.h
index d508ef0..8b53990 100644
--- a/include/mtd/jffs2-user.h
+++ b/include/mtd/jffs2-user.h
@@ -32,4 +32,51 @@ extern int target_endian;
#define je32_to_cpu(x) (t32((x).v32))
#define jemode_to_cpu(x) (t32((x).m))
+#define le16_to_cpu(x) (__BYTE_ORDER==__LITTLE_ENDIAN ? (x) : bswap_16(x))
+#define le32_to_cpu(x) (__BYTE_ORDER==__LITTLE_ENDIAN ? (x) : bswap_32(x))
+#define cpu_to_le16(x) (__BYTE_ORDER==__LITTLE_ENDIAN ? (x) : bswap_16(x))
+#define cpu_to_le32(x) (__BYTE_ORDER==__LITTLE_ENDIAN ? (x) : bswap_32(x))
+
+/* XATTR/POSIX-ACL related definition */
+/* Namespaces copied from xattr.h and posix_acl_xattr.h */
+#define XATTR_USER_PREFIX "user."
+#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
+#define XATTR_SECURITY_PREFIX "security."
+#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
+#define POSIX_ACL_XATTR_ACCESS "system.posix_acl_access"
+#define POSIX_ACL_XATTR_ACCESS_LEN (sizeof (POSIX_ACL_XATTR_ACCESS) - 1)
+#define POSIX_ACL_XATTR_DEFAULT "system.posix_acl_default"
+#define POSIX_ACL_XATTR_DEFAULT_LEN (sizeof (POSIX_ACL_XATTR_DEFAULT) - 1)
+#define XATTR_TRUSTED_PREFIX "trusted."
+#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
+
+typedef struct {
+ jint16_t e_tag;
+ jint16_t e_perm;
+ jint32_t e_id;
+} jffs2_acl_entry;
+
+typedef struct {
+ jint16_t e_tag;
+ jint16_t e_perm;
+} jffs2_acl_entry_short;
+
+typedef struct {
+ jint32_t a_version;
+} jffs2_acl_header;
+
+/* copied from include/linux/posix_acl_xattr.h */
+#define POSIX_ACL_XATTR_VERSION 0x0002
+
+typedef struct {
+ uint16_t e_tag;
+ uint16_t e_perm;
+ uint32_t e_id;
+} posix_acl_xattr_entry;
+
+typedef struct {
+ uint32_t a_version;
+ posix_acl_xattr_entry a_entries[0];
+} posix_acl_xattr_header;
+
#endif /* __JFFS2_USER_H__ */
--
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