A fix (bug #5823: mysql_install_db fails due to incorrect max_allowed_packet).

scripts/fill_help_tables.sh:
  percent_xxx variables added to avoid /0 error.
scripts/mysql_install_db.sh:
  A fix (bug #5823: mysql_install_db fails due to incorrect max_allowed_packet).          
  --net_buffer_length=16K added.
sql/net_serv.cc:
  Typo fixed.
sql/sql_parse.cc:
  A fix (bug #5823: mysql_install_db fails due to incorrect max_allowed_packet).
  Auto extend net buffer in bootstrap mode.

2 files changed, 19 insertions, 7 deletions

diff --git a/sql/net_serv.cc b/sql/net_serv.cc
index 5985cf63ed6..1e34ed90fee 100644
--- a/sql/net_serv.cc
+++ b/sql/net_serv.cc
@@ -165,8 +165,8 @@ my_bool net_realloc(NET *net, ulong length)
 
   if (length >= net->max_packet_size)
   {
-    DBUG_PRINT("error",("Packet too large. Max sixe: %lu",
-			net->max_packet_size));
+    DBUG_PRINT("error", ("Packet too large. Max size: %lu",
+               net->max_packet_size));
     net->error= 1;
     net->report_error= 1;
     net->last_errno= ER_NET_PACKET_TOO_LARGE;
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 3d1df80c37b..71870e2d990 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -1102,13 +1102,25 @@ extern "C" pthread_handler_decl(handle_bootstrap,arg)
   thd->init_for_queries();
   while (fgets(buff, thd->net.max_packet, file))
   {
-    uint length=(uint) strlen(buff);
-    if (buff[length-1]!='\n' && !feof(file))
+    ulong length= (ulong) strlen(buff);
+    while (buff[length-1] != '\n' && !feof(file))
     {
-      send_error(thd,ER_NET_PACKET_TOO_LARGE, NullS);
-      thd->fatal_error();
-      break;
+      /*
+        We got only a part of the current string. Will try to increase
+        net buffer then read the rest of the current string.
+      */
+      if (net_realloc(&(thd->net), 2 * thd->net.max_packet))
+      {
+        send_error(thd, thd->net.last_errno, NullS);
+        thd->is_fatal_error= 1;
+        break;
+      }
+      buff= (char*) thd->net.buff;
+      fgets(buff + length, thd->net.max_packet - length, file);
+      length+= (ulong) strlen(buff + length);
     }
+    if (thd->is_fatal_error)
+      break;
     while (length && (my_isspace(thd->charset(), buff[length-1]) ||
            buff[length-1] == ';'))
       length--;