ndb - printSchemaFile: more checks and options

ndb/src/kernel/blocks/dbdict/printSchemaFile.cpp:
  more checks and options

ndb/src/kernel/blocks/dbdict/printSchemaFile.cpp

-#if 0
-make -f Makefile -f - printSchemaFile <<'_eof_'
-printSchemaFile: printSchemaFile.cpp SchemaFile.hpp
-	$(CXXCOMPILE) -o $@ $@.cpp -L../../../common/util/.libs -lgeneral
-ifneq ($(MYSQL_HOME),)
-	ln -sf `pwd`/$@ $(MYSQL_HOME)/bin/$@
-endif
-_eof_
-exit $?
-#endif
-
 /* Copyright (C) 2003 MySQL AB
 
    This program is free software; you can redistribute it and/or modify
@@ -36,14 +25,19 @@ exit $?
 static const char* progname = 0;
 static bool allflag = false;
 static bool checkonly = false;
-static int xitcode = 0;
+static bool equalcontents = false;
+static bool okquiet = false;
 
 static void 
 usage()
 {
-  ndbout << "Usage " << progname
-         << " [-ac]"
-         << " P0.SchemaLog" << endl;  
+  ndbout
+    << "Usage: " << progname << " [-aceq]" << " file ..." << endl
+    << "-a      print also unused slots" << endl
+    << "-c      check only (return status 1 on error)" << endl
+    << "-e      check also that the files have identical contents" << endl
+    << "-q      no output if file is ok" << endl
+    << "Example: " << progname << " -ceq ndb_*_fs/D[12]/DBDICT/P0.SchemaLog" << endl;
 }
 
 static void
@@ -57,32 +51,56 @@ fill(const char * buf, int mod)
   }
 }
 
-static void
+static const char*
+version(Uint32 v)
+{
+  static char buf[40];
+  sprintf(buf, "%d.%d.%d", v >> 16, (v >> 8) & 0xFF, v & 0xFF);
+  return buf;
+}
+
+static int
 print_head(const char * filename, const SchemaFile * sf)
 {
+  int retcode = 0;
+
   if (! checkonly) {
     ndbout << "----- Schemafile: " << filename << " -----" << endl;
-    ndbout_c("Magic: %.*s ByteOrder: %.8x NdbVersion: %d.%d.%d FileSize: %d",
+    ndbout_c("Magic: %.*s ByteOrder: %.8x NdbVersion: %s FileSize: %d",
              sizeof(sf->Magic),
              sf->Magic, 
              sf->ByteOrder, 
-             sf->NdbVersion >> 16,
-             (sf->NdbVersion >> 8) & 0xFF,
-             sf->NdbVersion & 0xFF,
+             version(sf->NdbVersion),
              sf->FileSize);
   }
+
+  if (memcmp(sf->Magic, "NDBSCHMA", sizeof(sf->Magic) != 0)) {
+    ndbout << filename << ": invalid header magic" << endl;
+    retcode = 1;
+  }
+
+  if ((sf->NdbVersion >> 16) < 4 || (sf->NdbVersion >> 16) > 9) {
+    ndbout << filename << ": impossible version " << hex << sf->NdbVersion << endl;
+    retcode = 1;
+  }
+
+  return retcode;
 }
 
-static void 
-print_old(const char * filename, const SchemaFile * sf)
+static int
+print_old(const char * filename, const SchemaFile * sf, Uint32 sz)
 {
-  print_head(filename, sf);
+  int retcode = 0;
+
+  if (print_head(filename, sf) != 0)
+    retcode = 1;
 
   for (Uint32 i = 0; i < sf->NoOfTableEntries; i++) {
     SchemaFile::TableEntry_old te = sf->TableEntries_old[i];
     if (allflag ||
         (te.m_tableState != SchemaFile::INIT &&
          te.m_tableState != SchemaFile::DROP_TABLE_COMMITTED)) {
+      if (! checkonly)
         ndbout << "Table " << i << ":"
                << " State = " << te.m_tableState 
                << " version = " << te.m_tableVersion
@@ -91,18 +109,20 @@ print_old(const char * filename, const SchemaFile * sf)
                << " gcp: " << te.m_gcp << endl;
     }
   }
+  return retcode;
 }
 
-static void 
+static int
 print(const char * filename, const SchemaFile * xsf, Uint32 sz)
 {
   int retcode = 0;
 
-  print_head(filename, xsf);
+  if (print_head(filename, xsf) != 0)
+    retcode = 1;
 
   assert(sizeof(SchemaFile) == NDB_SF_PAGE_SIZE);
   if (xsf->FileSize != sz || xsf->FileSize % NDB_SF_PAGE_SIZE != 0) {
-    ndbout << "***** invalid FileSize " << xsf->FileSize << endl;
+    ndbout << filename << ": invalid FileSize " << xsf->FileSize << endl;
     retcode = 1;
   }
   Uint32 noOfPages = xsf->FileSize / NDB_SF_PAGE_SIZE;
@@ -111,19 +131,23 @@ print(const char * filename, const SchemaFile * xsf, Uint32 sz)
       ndbout << "----- Page: " << n << " (" << noOfPages << ") -----" << endl;
     }
     const SchemaFile * sf = &xsf[n];
+    if (memcmp(sf->Magic, xsf->Magic, sizeof(sf->Magic)) != 0) {
+      ndbout << filename << ": page " << n << " invalid magic" << endl;
+      retcode = 1;
+    }
     if (sf->FileSize != xsf->FileSize) {
-      ndbout << "***** page " << n << " FileSize changed to " << sf->FileSize << "!=" << xsf->FileSize << endl;
+      ndbout << filename << ": page " << n << " FileSize changed to " << sf->FileSize << "!=" << xsf->FileSize << endl;
       retcode = 1;
     }
     Uint32 cs = 0;
     for (Uint32 j = 0; j < NDB_SF_PAGE_SIZE_IN_WORDS; j++)
       cs ^= ((const Uint32*)sf)[j];
     if (cs != 0) {
-      ndbout << "***** page " << n << " invalid CheckSum" << endl;
+      ndbout << filename << ": page " << n << " invalid CheckSum" << endl;
       retcode = 1;
     }
     if (sf->NoOfTableEntries != NDB_SF_PAGE_ENTRIES) {
-      ndbout << "***** page " << n << " invalid NoOfTableEntries " << sf->NoOfTableEntries << endl;
+      ndbout << filename << ": page " << n << " invalid NoOfTableEntries " << sf->NoOfTableEntries << endl;
       retcode = 1;
     }
     for (Uint32 i = 0; i < NDB_SF_PAGE_ENTRIES; i++) {
@@ -141,31 +165,41 @@ print(const char * filename, const SchemaFile * xsf, Uint32 sz)
                  << " gcp: " << te.m_gcp << endl;
       }
       if (te.m_unused[0] != 0 || te.m_unused[1] != 0 || te.m_unused[2] != 0) {
-        ndbout << "***** entry " << j << " garbage in m_unused[3]" << endl;
+        ndbout << filename << ": entry " << j << " garbage in m_unused[3]" << endl;
         retcode = 1;
       }
     }
   }
 
-  if (retcode != 0)
-    xitcode = 1;
-  else if (checkonly)
-    ndbout << "ok: " << filename << endl;
+  return retcode;
 }
 
 NDB_COMMAND(printSchemafile, 
 	    "printSchemafile", "printSchemafile", "Prints a schemafile", 16384)
 { 
   progname = argv[0];
+  int exitcode = 0;
 
-  while (argv[1][0] == '-') {
+  while (argc > 1 && argv[1][0] == '-') {
     if (strchr(argv[1], 'a') != 0)
       allflag = true;
     if (strchr(argv[1], 'c') != 0)
       checkonly = true;
+    if (strchr(argv[1], 'e') != 0)
+      equalcontents = true;
+    if (strchr(argv[1], 'q') != 0)
+      okquiet = true;
+    if (strchr(argv[1], 'h') != 0 || strchr(argv[1], '?') != 0) {
+      usage();
+      return 0;
+    }
     argc--, argv++;
   }
 
+  const char * prevfilename = 0;
+  Uint32 * prevbuf = 0;
+  Uint32 prevbytes = 0;
+
   while (argc > 1) {
     const char * filename = argv[1];
     argc--, argv++;
@@ -173,8 +207,9 @@ NDB_COMMAND(printSchemafile,
     struct stat sbuf;
     const int res = stat(filename, &sbuf);
     if (res != 0) {
-      ndbout << "Could not find file: \"" << filename << "\"" << endl;
-      return 1;
+      ndbout << filename << ": not found errno=" << errno << endl;
+      exitcode = 1;
+      continue;
     }
     const Uint32 bytes = sbuf.st_size;
     
@@ -182,25 +217,56 @@ NDB_COMMAND(printSchemafile,
     
     FILE * f = fopen(filename, "rb");
     if (f == 0) {
-      ndbout << "Failed to open file" << endl;
+      ndbout << filename << ": open failed errno=" << errno << endl;
       delete [] buf;
-      return 1;
+      exitcode = 1;
+      continue;
     }
     Uint32 sz = fread(buf, 1, bytes, f);
     fclose(f);
     if (sz != bytes) {
-      ndbout << "Failure while reading file" << endl;
+      ndbout << filename << ": read failed errno=" << errno << endl;
       delete [] buf;
-      return 1;
+      exitcode = 1;
+      continue;
+    }
+
+    if (sz < 32) {
+      ndbout << filename << ": too short (no header)" << endl;
+      delete [] buf;
+      exitcode = 1;
+      continue;
     }
 
     SchemaFile* sf = (SchemaFile *)&buf[0];
+    int ret;
     if (sf->NdbVersion < NDB_SF_VERSION_5_0_6)
-      print_old(filename, sf);
+      ret = print_old(filename, sf, sz);
     else
-      print(filename, sf, sz);
-    delete [] buf;
+      ret = print(filename, sf, sz);
+
+    if (ret != 0) {
+      ndbout << filename << ": check failed"
+             << " version=" << version(sf->NdbVersion) << endl;
+      exitcode = 1;
+    } else if (! okquiet) {
+      ndbout << filename << ": ok"
+             << " version=" << version(sf->NdbVersion) << endl;
+    }
+
+    if (equalcontents && prevfilename != 0) {
+      if (prevbytes != bytes || memcmp(prevbuf, buf, bytes) != 0) {
+        ndbout << filename << ": differs from " << prevfilename << endl;
+        exitcode = 1;
+      }
+    }
+
+    prevfilename = filename;
+    delete [] prevbuf;
+    prevbuf = buf;
+    prevbytes = bytes;
   }
 
-  return xitcode;
+  delete [] prevbuf;
+  return exitcode;
 }