Bug #26817: mysqldump fails to backup database containing view with invalid definer

give some leeway on required permissions for SHOW FIELDS on views so
an unknonwn DEFINER will no longer break mysqldump


client/client_priv.h:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  New option for mysqldump: redirect stderr to file ("2> for Windows")
client/mysqldump.c:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  New option for mysqldump: redirect stderr to file ("2> for Windows")
mysql-test/r/information_schema_db.result:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  New option for mysqldump: redirect stderr to file ("2> for Windows")
mysql-test/t/information_schema_db.test:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  New option for mysqldump: redirect stderr to file ("2> for Windows")
sql/sql_base.cc:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  be a little more lenient for SHOW FIELDS FROM
sql/sql_parse.cc:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  be a little more lenient for SHOW FIELDS FROM on views on views
sql/sql_view.cc:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  give SHOW FIELDS the same perks as SHOW CREATE
sql/table.cc:
  Bug #26817: mysqldump fails to backup database containing view with invalid definer
  
  give SHOW FIELDS the same perks as SHOW CREATE

2 files changed, 23 insertions, 3 deletions

diff --git a/client/client_priv.h b/client/client_priv.h
index 7748dc612d6..418bf86f2c8 100644
--- a/client/client_priv.h
+++ b/client/client_priv.h
@@ -51,5 +51,5 @@ enum options_client
   OPT_TRIGGERS,
   OPT_IGNORE_TABLE,OPT_INSERT_IGNORE,OPT_SHOW_WARNINGS,OPT_DROP_DATABASE,
   OPT_TZ_UTC, OPT_AUTO_CLOSE, OPT_SSL_VERIFY_SERVER_CERT,
-  OPT_DEBUG_INFO
+  OPT_DEBUG_INFO, OPT_ERROR_LOG_FILE
 };
diff --git a/client/mysqldump.c b/client/mysqldump.c
index 94ab9dac5ac..0d7c0c3a0bf 100644
--- a/client/mysqldump.c
+++ b/client/mysqldump.c
@@ -105,7 +105,8 @@ static char  *opt_password=0,*current_user=0,
              *lines_terminated=0, *enclosed=0, *opt_enclosed=0, *escaped=0,
              *where=0, *order_by=0,
              *opt_compatible_mode_str= 0,
-             *err_ptr= 0;
+             *err_ptr= 0,
+             *log_error_file= NULL;
 static char **defaults_argv= 0;
 static char compatible_mode_normal_str[255];
 static ulong opt_compatible_mode= 0;
@@ -116,7 +117,9 @@ static my_string opt_mysql_unix_port=0;
 static int   first_error=0;
 static DYNAMIC_STRING extended_row;
 #include <sslopt-vars.h>
-FILE  *md_result_file= 0;
+FILE *md_result_file= 0;
+FILE *stderror_file=0;
+
 #ifdef HAVE_SMEM
 static char *shared_memory_base_name=0;
 #endif
@@ -293,6 +296,9 @@ static struct my_option my_long_options[] =
    0, 0, 0, 0, 0, 0},
   {"lock-tables", 'l', "Lock all tables for read.", (gptr*) &lock_tables,
    (gptr*) &lock_tables, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
+  {"log-error", OPT_ERROR_LOG_FILE, "Append warnings and errors to given file.",
+   (gptr*) &log_error_file, (gptr*) &log_error_file, 0, GET_STR,
+   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"master-data", OPT_MASTER_DATA,
    "This causes the binary log position and filename to be appended to the "
    "output. If equal to 1, will print it as a CHANGE MASTER command; if equal"
@@ -3694,6 +3700,16 @@ int main(int argc, char **argv)
     free_resources(0);
     exit(exit_code);
   }
+
+  if (log_error_file)
+  {
+    if(!(stderror_file= freopen(log_error_file, "a+", stderr)))
+    {
+      free_resources(0);
+      exit(EX_MYSQLERR);
+    }
+  }
+
   if (connect_to_db(current_host, current_user, opt_password))
   {
     free_resources(0);
@@ -3746,5 +3762,9 @@ err:
   if (!path)
     write_footer(md_result_file);
   free_resources();
+
+  if (stderror_file)
+    fclose(stderror_file);
+
   return(first_error);
 } /* main */