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authorTao Ma <boyu.mt@taobao.com>2012-12-05 16:28:46 +0100
committerTheodore Ts'o <tytso@mit.edu>2012-12-05 16:28:46 +0100
commit879b38257bf2b6fa8406693a3b5b5a0649e7c594 (patch)
tree5677d607180d2136b785e6ed4195555f5d76ff8c /fs/ext4
parentext4: move extra inode read to a new function (diff)
downloadlinux-879b38257bf2b6fa8406693a3b5b5a0649e7c594.tar.xz
linux-879b38257bf2b6fa8406693a3b5b5a0649e7c594.zip
ext4: export inline xattr functions
The inline data feature will need some inline xattr functions, so export them from fs/ext4/xattr.c so that inline.c can use them. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/xattr.c39
-rw-r--r--fs/ext4/xattr.h58
2 files changed, 64 insertions, 33 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index b1adda1b750d..a47dc3883a23 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -61,11 +61,6 @@
#include "xattr.h"
#include "acl.h"
-#define BHDR(bh) ((struct ext4_xattr_header *)((bh)->b_data))
-#define ENTRY(ptr) ((struct ext4_xattr_entry *)(ptr))
-#define BFIRST(bh) ENTRY(BHDR(bh)+1)
-#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)
-
#ifdef EXT4_XATTR_DEBUG
# define ea_idebug(inode, f...) do { \
printk(KERN_DEBUG "inode %s:%lu: ", \
@@ -312,7 +307,7 @@ cleanup:
return error;
}
-static int
+int
ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,
void *buffer, size_t buffer_size)
{
@@ -581,21 +576,6 @@ static size_t ext4_xattr_free_space(struct ext4_xattr_entry *last,
return (*min_offs - ((void *)last - base) - sizeof(__u32));
}
-struct ext4_xattr_info {
- int name_index;
- const char *name;
- const void *value;
- size_t value_len;
-};
-
-struct ext4_xattr_search {
- struct ext4_xattr_entry *first;
- void *base;
- void *end;
- struct ext4_xattr_entry *here;
- int not_found;
-};
-
static int
ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
{
@@ -949,14 +929,8 @@ bad_block:
#undef header
}
-struct ext4_xattr_ibody_find {
- struct ext4_xattr_search s;
- struct ext4_iloc iloc;
-};
-
-static int
-ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
- struct ext4_xattr_ibody_find *is)
+int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is)
{
struct ext4_xattr_ibody_header *header;
struct ext4_inode *raw_inode;
@@ -984,10 +958,9 @@ ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
return 0;
}
-static int
-ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
- struct ext4_xattr_info *i,
- struct ext4_xattr_ibody_find *is)
+int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+ struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is)
{
struct ext4_xattr_ibody_header *header;
struct ext4_xattr_search *s = &is->s;
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 91f31ca7d9af..40ca7a6f5eec 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -65,6 +65,32 @@ struct ext4_xattr_entry {
EXT4_I(inode)->i_extra_isize))
#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
+#define BHDR(bh) ((struct ext4_xattr_header *)((bh)->b_data))
+#define ENTRY(ptr) ((struct ext4_xattr_entry *)(ptr))
+#define BFIRST(bh) ENTRY(BHDR(bh)+1)
+#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)
+
+
+struct ext4_xattr_info {
+ int name_index;
+ const char *name;
+ const void *value;
+ size_t value_len;
+};
+
+struct ext4_xattr_search {
+ struct ext4_xattr_entry *first;
+ void *base;
+ void *end;
+ struct ext4_xattr_entry *here;
+ int not_found;
+};
+
+struct ext4_xattr_ibody_find {
+ struct ext4_xattr_search s;
+ struct ext4_iloc iloc;
+};
+
# ifdef CONFIG_EXT4_FS_XATTR
extern const struct xattr_handler ext4_xattr_user_handler;
@@ -90,6 +116,15 @@ extern void ext4_exit_xattr(void);
extern const struct xattr_handler *ext4_xattr_handlers[];
+extern int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is);
+extern int ext4_xattr_ibody_get(struct inode *inode, int name_index,
+ const char *name,
+ void *buffer, size_t buffer_size);
+extern int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+ struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is);
+
# else /* CONFIG_EXT4_FS_XATTR */
static inline int
@@ -143,6 +178,29 @@ ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
#define ext4_xattr_handlers NULL
+static inline int
+ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int
+ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+ struct ext4_xattr_info *i,
+ struct ext4_xattr_ibody_find *is)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int
+ext4_xattr_ibody_get(struct inode *inode, int name_index,
+ const char *name,
+ void *buffer, size_t buffer_size)
+{
+ return -EOPNOTSUPP;
+}
+
# endif /* CONFIG_EXT4_FS_XATTR */
#ifdef CONFIG_EXT4_FS_SECURITY