UBIFS: add debugfs support
We need to have a possibility to see various UBIFS variables
and ask UBIFS to dump various information. Debugfs is what
we need.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index d6ea136..a6b70f8a 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -43,6 +43,13 @@
* @new_nhead_offs: used by LPT tree size checker
* @new_ihead_lnum: used by debugging to check ihead_lnum
* @new_ihead_offs: used by debugging to check ihead_offs
+ *
+ * debugfs_dir_name: name of debugfs directory containing this file-system's
+ * files
+ * debugfs_dir: direntry object of the file-system debugfs directory
+ * dump_lprops: "dump lprops" debugfs knob
+ * dump_budg: "dump budgeting information" debugfs knob
+ * dump_tnc: "dump TNC" debugfs knob
*/
struct ubifs_debug_info {
void *buf;
@@ -61,6 +68,12 @@
int new_nhead_offs;
int new_ihead_lnum;
int new_ihead_offs;
+
+ char debugfs_dir_name[100];
+ struct dentry *debugfs_dir;
+ struct dentry *dump_lprops;
+ struct dentry *dump_budg;
+ struct dentry *dump_tnc;
};
#define ubifs_assert(expr) do { \
@@ -251,7 +264,6 @@
void ubifs_debugging_exit(struct ubifs_info *c);
/* Dump functions */
-
const char *dbg_ntype(int type);
const char *dbg_cstate(int cmt_state);
const char *dbg_get_key_dump(const struct ubifs_info *c,
@@ -274,7 +286,6 @@
void dbg_dump_index(struct ubifs_info *c);
/* Checking helper functions */
-
typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
struct ubifs_zbranch *zbr, void *priv);
typedef int (*dbg_znode_callback)(struct ubifs_info *c,
@@ -354,6 +365,12 @@
return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
}
+/* Debugfs-related stuff */
+int dbg_debugfs_init(void);
+void dbg_debugfs_exit(void);
+int dbg_debugfs_init_fs(struct ubifs_info *c);
+void dbg_debugfs_exit_fs(struct ubifs_info *c);
+
#else /* !CONFIG_UBIFS_FS_DEBUG */
/* Use "if (0)" to make compiler check arguments even if debugging is off */
@@ -434,6 +451,10 @@
#define dbg_force_in_the_gaps() 0
#define dbg_failure_mode 0
-#endif /* !CONFIG_UBIFS_FS_DEBUG */
+#define dbg_debugfs_init() 0
+#define dbg_debugfs_exit()
+#define dbg_debugfs_init_fs(c) 0
+#define dbg_debugfs_exit_fs(c) 0
+#endif /* !CONFIG_UBIFS_FS_DEBUG */
#endif /* !__UBIFS_DEBUG_H__ */