ceph: use macros to normalize vxattr table definitions
Entries in the ceph virtual extended attribute tables all follow a
distinct pattern in their definition. Enforce this pattern through
the use of a macro.
Also, a null name field signals the end of the table, so make that
be the first field in the ceph_vxattr_cb structure.
Signed-off-by: Alex Elder <elder@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 05bb56f..38aef47 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -25,10 +25,10 @@
* statistics and layout metadata.
*/
struct ceph_vxattr_cb {
- bool readonly;
char *name;
size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
size_t size);
+ bool readonly;
};
/* directories */
@@ -82,16 +82,25 @@
(long)ci->i_rctime.tv_nsec);
}
+#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name
+
+#define XATTR_NAME_CEPH(_type, _name) \
+ { \
+ .name = CEPH_XATTR_NAME(_type, _name), \
+ .getxattr_cb = ceph_vxattrcb_ ## _name, \
+ .readonly = true, \
+ }
+
static struct ceph_vxattr_cb ceph_dir_vxattrs[] = {
- { true, XATTR_CEPH_PREFIX "dir.entries", ceph_vxattrcb_entries},
- { true, XATTR_CEPH_PREFIX "dir.files", ceph_vxattrcb_files},
- { true, XATTR_CEPH_PREFIX "dir.subdirs", ceph_vxattrcb_subdirs},
- { true, XATTR_CEPH_PREFIX "dir.rentries", ceph_vxattrcb_rentries},
- { true, XATTR_CEPH_PREFIX "dir.rfiles", ceph_vxattrcb_rfiles},
- { true, XATTR_CEPH_PREFIX "dir.rsubdirs", ceph_vxattrcb_rsubdirs},
- { true, XATTR_CEPH_PREFIX "dir.rbytes", ceph_vxattrcb_rbytes},
- { true, XATTR_CEPH_PREFIX "dir.rctime", ceph_vxattrcb_rctime},
- { true, NULL, NULL }
+ XATTR_NAME_CEPH(dir, entries),
+ XATTR_NAME_CEPH(dir, files),
+ XATTR_NAME_CEPH(dir, subdirs),
+ XATTR_NAME_CEPH(dir, rentries),
+ XATTR_NAME_CEPH(dir, rfiles),
+ XATTR_NAME_CEPH(dir, rsubdirs),
+ XATTR_NAME_CEPH(dir, rbytes),
+ XATTR_NAME_CEPH(dir, rctime),
+ { 0 } /* Required table terminator */
};
/* files */
@@ -114,10 +123,14 @@
}
static struct ceph_vxattr_cb ceph_file_vxattrs[] = {
- { true, XATTR_CEPH_PREFIX "file.layout", ceph_vxattrcb_layout},
+ XATTR_NAME_CEPH(file, layout),
/* The following extended attribute name is deprecated */
- { true, XATTR_CEPH_PREFIX "layout", ceph_vxattrcb_layout},
- { true, NULL, NULL }
+ {
+ .name = XATTR_CEPH_PREFIX "layout",
+ .getxattr_cb = ceph_vxattrcb_layout,
+ .readonly = true,
+ },
+ { 0 } /* Required table terminator */
};
static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode)