Merge lp:~gaul/percona-data-recovery-tool-for-innodb/page-printer-type into lp:percona-data-recovery-tool-for-innodb

[Andrew Gaul]

Unmerged revisions

69. By Andrew Gaul <email address hidden> on 2012-08-13

Emit a human-readable page type

=== modified file 'page_printer.c'
--- page_printer.c	2012-08-09 20:35:20 +0000
+++ page_printer.c	2012-08-13 17:48:28 +0000
@@ -27,6 +27,25 @@
 
 #define COLUMN_NAME_FMT "%-32s"
 
+/* sourced from fil0fil.h */
+static const char *page_type_to_str(ulint page_type)
+{
+  switch (page_type) {
+  case FIL_PAGE_INDEX: return "INDEX";
+  case FIL_PAGE_UNDO_LOG: return "UNDO_LOG";
+  case FIL_PAGE_INODE: return "INODE";
+  case FIL_PAGE_IBUF_FREE_LIST: return "IBUF_FREE_LIST";
+  case FIL_PAGE_TYPE_ALLOCATED: return "ALLOCATED";
+  case FIL_PAGE_IBUF_BITMAP: return "IBUF_BITMAP";
+  case FIL_PAGE_TYPE_SYS: return "SYS";
+  case FIL_PAGE_TYPE_TRX_SYS: return "TRX_SYS";
+  case FIL_PAGE_TYPE_FSP_HDR: return "FSP_HDR";
+  case FIL_PAGE_TYPE_XDES: return "XDES";
+  case FIL_PAGE_TYPE_BLOB: return "BLOB";
+  default: return "UNKNOWN";
+  }
+}
+
 static void print_page(uchar *p)
 {
   int type = mach_read_from_2(p + FIL_PAGE_TYPE);
@@ -44,8 +63,13 @@
       mach_read_from_4(p + FIL_PAGE_NEXT));
   printf(COLUMN_NAME_FMT " %ld\n", "FIL_PAGE_LSN",
       mach_read_from_4(p + FIL_PAGE_LSN));
-  printf(COLUMN_NAME_FMT " %ld\n", "FIL_PAGE_TYPE",
-      mach_read_from_2(p + FIL_PAGE_TYPE));
+  ulint page_type = mach_read_from_2(p + FIL_PAGE_TYPE);
+  const char *page_type_str = page_type_to_str(page_type);
+  if (page_type_str == NULL) {
+    printf(COLUMN_NAME_FMT " UNKNOWN (%ld)\n", "FIL_PAGE_TYPE", page_type);
+  } else {
+    printf(COLUMN_NAME_FMT " %s\n", "FIL_PAGE_TYPE", page_type_str);
+  }
   dulint flush_lsn_tuple = mach_read_from_6(p + FIL_PAGE_FILE_FLUSH_LSN);
   uint64_t flush_lsn = (((uint64_t) flush_lsn_tuple.high) << 32) +
       flush_lsn_tuple.low;