bk commit into 5.0 tree (msvensson:1.2427) BUG#20166

[msvensson]

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ChangeSet@stripped, 2007-02-20 16:12:14+01:00, msvensson@stripped +3 -0
  Bug#20166 mysql-test-run.pl does not test system privilege tables creation
   - Part 2, add @@hostname system variable

  sql/log.cc@stripped, 2007-02-20 16:12:13+01:00, msvensson@stripped +1 -1
    Use pidfile_name as base when generating the default log name

  sql/mysqld.cc@stripped, 2007-02-20 16:12:13+01:00, msvensson@stripped +10 -4
    Init "glob_hostname" to that of hostname, fallback to "localhost"
    if 'gethostname' should fail.
    Init "pidfile_name" to hostname.pid and fallback to "mysql.pid" if
    'gethostname' should fail 

  sql/set_var.cc@stripped, 2007-02-20 16:12:13+01:00, msvensson@stripped +6 -0
    Add new system variable "hostname"

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	msvensson
# Host:	pilot.blaudden
# Root:	/home/msvensson/mysql/bug20166/my50-bug20166

--- 1.200/sql/log.cc	2007-01-12 12:22:48 +01:00
+++ 1.201/sql/log.cc	2007-02-20 16:12:13 +01:00
@@ -452,7 +452,7 @@
       TODO: The following should be using fn_format();  We just need to
       first change fn_format() to cut the file name if it's too long.
     */
-    strmake(buff,glob_hostname,FN_REFLEN-5);
+    strmake(buff, pidfile_name,FN_REFLEN-5);
     strmov(fn_ext(buff),suffix);
     return (const char *)buff;
   }

--- 1.598/sql/mysqld.cc	2007-02-14 14:45:13 +01:00
+++ 1.599/sql/mysqld.cc	2007-02-20 16:12:13 +01:00
@@ -2636,9 +2636,15 @@
   mysql_slow_log.init_pthread_objects();
   mysql_bin_log.init_pthread_objects();
 
-  if (gethostname(glob_hostname,sizeof(glob_hostname)-4) < 0)
-    strmov(glob_hostname,"mysql");
-  strmake(pidfile_name, glob_hostname, sizeof(pidfile_name)-5);
+  if (gethostname(glob_hostname,sizeof(glob_hostname)) < 0)
+  {
+    strmake(glob_hostname, STRING_WITH_LEN("localhost"));
+    sql_print_warning("gethostname failed, using '%s' as hostname",
+                      glob_hostname);
+    strmake(pidfile_name, STRING_WITH_LEN("mysql"));
+  }
+  else
+    strmake(pidfile_name, glob_hostname, sizeof(pidfile_name)-5);
   strmov(fn_ext(pidfile_name),".pid");		// Add proper extension
 
   load_defaults(conf_file_name, groups, &argc, &argv);
@@ -3087,7 +3093,7 @@
   if (opt_error_log)
   {
     if (!log_error_file_ptr[0])
-      fn_format(log_error_file, glob_hostname, mysql_data_home, ".err",
+      fn_format(log_error_file, pidfile_name, mysql_data_home, ".err",
                 MY_REPLACE_EXT); /* replace '.<domain>' by '.err', bug#4997 */
     else
       fn_format(log_error_file, log_error_file_ptr, mysql_data_home, ".err",

--- 1.179/sql/set_var.cc	2007-02-14 14:45:13 +01:00
+++ 1.180/sql/set_var.cc	2007-02-20 16:12:13 +01:00
@@ -590,6 +590,10 @@
 /* Global read-only variable describing server license */
 sys_var_const_str		sys_license("license", STRINGIFY_ARG(LICENSE));
 
+/* Global read-only variable containing hostname */
+sys_var_const_str		sys_hostname("hostname", glob_hostname);
+
+
 
 /*
   List of all variables for initialisation and storage in hash
@@ -642,6 +646,7 @@
   &sys_foreign_key_checks,
   &sys_group_concat_max_len,
   &sys_have_innodb,
+  &sys_hostname,
   &sys_identity,
   &sys_init_connect,
   &sys_init_slave,
@@ -874,6 +879,7 @@
   {"have_raid",		      (char*) &have_raid,		    SHOW_HAVE},
   {"have_rtree_keys",         (char*) &have_rtree_keys,             SHOW_HAVE},
   {"have_symlink",            (char*) &have_symlink,                SHOW_HAVE},
+  {sys_hostname.name,         (char*) &sys_hostname,                SHOW_SYS},
   {"init_connect",            (char*) &sys_init_connect,            SHOW_SYS},
   {"init_file",               (char*) &opt_init_file,               SHOW_CHAR_PTR},
   {"init_slave",              (char*) &sys_init_slave,              SHOW_SYS},